HMVMXR0.cpp@ 91037

Last change on this file since 91037 was 91037, checked in by vboxsync, 3 years ago
VMM: Nested VMX: bugref:10092 Added support for tertiary processor based VM-execution controls and updated the virtual VMCS.
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1	/* $Id: HMVMXR0.cpp 91037 2021-08-31 16:42:14Z vboxsync $ */
2	/** @file
3	* HM VMX (Intel VT-x) - Host Context Ring-0.
4	*/
5
6	/*
7	* Copyright (C) 2012-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_HM
23	#define VMCPU_INCL_CPUM_GST_CTX
24	#include <iprt/x86.h>
25	#include <iprt/asm-amd64-x86.h>
26	#include <iprt/thread.h>
27	#include <iprt/mem.h>
28	#include <iprt/mp.h>
29
30	#include <VBox/vmm/pdmapi.h>
31	#include <VBox/vmm/dbgf.h>
32	#include <VBox/vmm/iem.h>
33	#include <VBox/vmm/iom.h>
34	#include <VBox/vmm/tm.h>
35	#include <VBox/vmm/em.h>
36	#include <VBox/vmm/gim.h>
37	#include <VBox/vmm/apic.h>
38	#include "HMInternal.h"
39	#include <VBox/vmm/vmcc.h>
40	#include <VBox/vmm/hmvmxinline.h>
41	#include "HMVMXR0.h"
42	#include "dtrace/VBoxVMM.h"
43
44	#ifdef DEBUG_ramshankar
45	# define HMVMX_ALWAYS_SAVE_GUEST_RFLAGS
46	# define HMVMX_ALWAYS_SAVE_RO_GUEST_STATE
47	# define HMVMX_ALWAYS_SAVE_FULL_GUEST_STATE
48	# define HMVMX_ALWAYS_SYNC_FULL_GUEST_STATE
49	# define HMVMX_ALWAYS_CLEAN_TRANSIENT
50	# define HMVMX_ALWAYS_CHECK_GUEST_STATE
51	# define HMVMX_ALWAYS_TRAP_ALL_XCPTS
52	# define HMVMX_ALWAYS_TRAP_PF
53	# define HMVMX_ALWAYS_FLUSH_TLB
54	# define HMVMX_ALWAYS_SWAP_EFER
55	#endif
56
57
58	/*********************************************************************************************************************************
59	* Defined Constants And Macros *
60	*********************************************************************************************************************************/
61	/** Use the function table. */
62	#define HMVMX_USE_FUNCTION_TABLE
63
64	/** Determine which tagged-TLB flush handler to use. */
65	#define HMVMX_FLUSH_TAGGED_TLB_EPT_VPID 0
66	#define HMVMX_FLUSH_TAGGED_TLB_EPT 1
67	#define HMVMX_FLUSH_TAGGED_TLB_VPID 2
68	#define HMVMX_FLUSH_TAGGED_TLB_NONE 3
69
70	/**
71	* Flags to skip redundant reads of some common VMCS fields that are not part of
72	* the guest-CPU or VCPU state but are needed while handling VM-exits.
73	*/
74	#define HMVMX_READ_IDT_VECTORING_INFO RT_BIT_32(0)
75	#define HMVMX_READ_IDT_VECTORING_ERROR_CODE RT_BIT_32(1)
76	#define HMVMX_READ_EXIT_QUALIFICATION RT_BIT_32(2)
77	#define HMVMX_READ_EXIT_INSTR_LEN RT_BIT_32(3)
78	#define HMVMX_READ_EXIT_INTERRUPTION_INFO RT_BIT_32(4)
79	#define HMVMX_READ_EXIT_INTERRUPTION_ERROR_CODE RT_BIT_32(5)
80	#define HMVMX_READ_EXIT_INSTR_INFO RT_BIT_32(6)
81	#define HMVMX_READ_GUEST_LINEAR_ADDR RT_BIT_32(7)
82	#define HMVMX_READ_GUEST_PHYSICAL_ADDR RT_BIT_32(8)
83	#define HMVMX_READ_GUEST_PENDING_DBG_XCPTS RT_BIT_32(9)
84
85	/** All the VMCS fields required for processing of exception/NMI VM-exits. */
86	#define HMVMX_READ_XCPT_INFO ( HMVMX_READ_EXIT_INTERRUPTION_INFO \
87	\| HMVMX_READ_EXIT_INTERRUPTION_ERROR_CODE \
88	\| HMVMX_READ_EXIT_INSTR_LEN \
89	\| HMVMX_READ_IDT_VECTORING_INFO \
90	\| HMVMX_READ_IDT_VECTORING_ERROR_CODE)
91
92	/** Assert that all the given fields have been read from the VMCS. */
93	#ifdef VBOX_STRICT
94	# define HMVMX_ASSERT_READ(a_pVmxTransient, a_fReadFields) \
95	do { \
96	uint32_t const fVmcsFieldRead = ASMAtomicUoReadU32(&pVmxTransient->fVmcsFieldsRead); \
97	Assert((fVmcsFieldRead & (a_fReadFields)) == (a_fReadFields)); \
98	} while (0)
99	#else
100	# define HMVMX_ASSERT_READ(a_pVmxTransient, a_fReadFields) do { } while (0)
101	#endif
102
103	/**
104	* Subset of the guest-CPU state that is kept by VMX R0 code while executing the
105	* guest using hardware-assisted VMX.
106	*
107	* This excludes state like GPRs (other than RSP) which are always are
108	* swapped and restored across the world-switch and also registers like EFER,
109	* MSR which cannot be modified by the guest without causing a VM-exit.
110	*/
111	#define HMVMX_CPUMCTX_EXTRN_ALL ( CPUMCTX_EXTRN_RIP \
112	\| CPUMCTX_EXTRN_RFLAGS \
113	\| CPUMCTX_EXTRN_RSP \
114	\| CPUMCTX_EXTRN_SREG_MASK \
115	\| CPUMCTX_EXTRN_TABLE_MASK \
116	\| CPUMCTX_EXTRN_KERNEL_GS_BASE \
117	\| CPUMCTX_EXTRN_SYSCALL_MSRS \
118	\| CPUMCTX_EXTRN_SYSENTER_MSRS \
119	\| CPUMCTX_EXTRN_TSC_AUX \
120	\| CPUMCTX_EXTRN_OTHER_MSRS \
121	\| CPUMCTX_EXTRN_CR0 \
122	\| CPUMCTX_EXTRN_CR3 \
123	\| CPUMCTX_EXTRN_CR4 \
124	\| CPUMCTX_EXTRN_DR7 \
125	\| CPUMCTX_EXTRN_HWVIRT \
126	\| CPUMCTX_EXTRN_HM_VMX_MASK)
127
128	/**
129	* Exception bitmap mask for real-mode guests (real-on-v86).
130	*
131	* We need to intercept all exceptions manually except:
132	* - \#AC and \#DB are always intercepted to prevent the CPU from deadlocking
133	* due to bugs in Intel CPUs.
134	* - \#PF need not be intercepted even in real-mode if we have nested paging
135	* support.
136	*/
137	#define HMVMX_REAL_MODE_XCPT_MASK ( RT_BIT(X86_XCPT_DE) /* always: \| RT_BIT(X86_XCPT_DB) */ \| RT_BIT(X86_XCPT_NMI) \
138	\| RT_BIT(X86_XCPT_BP) \| RT_BIT(X86_XCPT_OF) \| RT_BIT(X86_XCPT_BR) \
139	\| RT_BIT(X86_XCPT_UD) \| RT_BIT(X86_XCPT_NM) \| RT_BIT(X86_XCPT_DF) \
140	\| RT_BIT(X86_XCPT_CO_SEG_OVERRUN) \| RT_BIT(X86_XCPT_TS) \| RT_BIT(X86_XCPT_NP) \
141	\| RT_BIT(X86_XCPT_SS) \| RT_BIT(X86_XCPT_GP) /* RT_BIT(X86_XCPT_PF) */ \
142	\| RT_BIT(X86_XCPT_MF) /* always: \| RT_BIT(X86_XCPT_AC) */ \| RT_BIT(X86_XCPT_MC) \
143	\| RT_BIT(X86_XCPT_XF))
144
145	/** Maximum VM-instruction error number. */
146	#define HMVMX_INSTR_ERROR_MAX 28
147
148	/** Profiling macro. */
149	#ifdef HM_PROFILE_EXIT_DISPATCH
150	# define HMVMX_START_EXIT_DISPATCH_PROF() STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExitDispatch, ed)
151	# define HMVMX_STOP_EXIT_DISPATCH_PROF() STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitDispatch, ed)
152	#else
153	# define HMVMX_START_EXIT_DISPATCH_PROF() do { } while (0)
154	# define HMVMX_STOP_EXIT_DISPATCH_PROF() do { } while (0)
155	#endif
156
157	/** Assert that preemption is disabled or covered by thread-context hooks. */
158	#define HMVMX_ASSERT_PREEMPT_SAFE(a_pVCpu) Assert( VMMR0ThreadCtxHookIsEnabled((a_pVCpu)) \
159	\|\| !RTThreadPreemptIsEnabled(NIL_RTTHREAD))
160
161	/** Assert that we haven't migrated CPUs when thread-context hooks are not
162	* used. */
163	#define HMVMX_ASSERT_CPU_SAFE(a_pVCpu) AssertMsg( VMMR0ThreadCtxHookIsEnabled((a_pVCpu)) \
164	\|\| (a_pVCpu)->hmr0.s.idEnteredCpu == RTMpCpuId(), \
165	("Illegal migration! Entered on CPU %u Current %u\n", \
166	(a_pVCpu)->hmr0.s.idEnteredCpu, RTMpCpuId()))
167
168	/** Asserts that the given CPUMCTX_EXTRN_XXX bits are present in the guest-CPU
169	* context. */
170	#define HMVMX_CPUMCTX_ASSERT(a_pVCpu, a_fExtrnMbz) AssertMsg(!((a_pVCpu)->cpum.GstCtx.fExtrn & (a_fExtrnMbz)), \
171	("fExtrn=%#RX64 fExtrnMbz=%#RX64\n", \
172	(a_pVCpu)->cpum.GstCtx.fExtrn, (a_fExtrnMbz)))
173
174	/** Log the VM-exit reason with an easily visible marker to identify it in a
175	* potential sea of logging data. */
176	#define HMVMX_LOG_EXIT(a_pVCpu, a_uExitReason) \
177	do { \
178	Log4(("VM-exit: vcpu[%RU32] %85s -v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-\n", (a_pVCpu)->idCpu, \
179	HMGetVmxExitName(a_uExitReason))); \
180	} while (0) \
181
182
183	/*********************************************************************************************************************************
184	* Structures and Typedefs *
185	*********************************************************************************************************************************/
186	/**
187	* VMX per-VCPU transient state.
188	*
189	* A state structure for holding miscellaneous information across
190	* VMX non-root operation and restored after the transition.
191	*
192	* Note: The members are ordered and aligned such that the most
193	* frequently used ones (in the guest execution loop) fall within
194	* the first cache line.
195	*/
196	typedef struct VMXTRANSIENT
197	{
198	/** Mask of currently read VMCS fields; HMVMX_READ_XXX. */
199	uint32_t fVmcsFieldsRead;
200	/** The guest's TPR value used for TPR shadowing. */
201	uint8_t u8GuestTpr;
202	uint8_t abAlignment0[3];
203
204	/** Whether the VM-exit was caused by a page-fault during delivery of an
205	* external interrupt or NMI. */
206	bool fVectoringPF;
207	/** Whether the VM-exit was caused by a page-fault during delivery of a
208	* contributory exception or a page-fault. */
209	bool fVectoringDoublePF;
210	/** Whether the VM-entry failed or not. */
211	bool fVMEntryFailed;
212	/** Whether the TSC_AUX MSR needs to be removed from the auto-load/store MSR
213	* area after VM-exit. */
214	bool fRemoveTscAuxMsr;
215	/** Whether TSC-offsetting and VMX-preemption timer was updated before VM-entry. */
216	bool fUpdatedTscOffsettingAndPreemptTimer;
217	/** Whether we are currently executing a nested-guest. */
218	bool fIsNestedGuest;
219	/** Whether the guest debug state was active at the time of VM-exit. */
220	bool fWasGuestDebugStateActive;
221	/** Whether the hyper debug state was active at the time of VM-exit. */
222	bool fWasHyperDebugStateActive;
223
224	/** The basic VM-exit reason. */
225	uint32_t uExitReason;
226	/** The VM-exit interruption error code. */
227	uint32_t uExitIntErrorCode;
228
229	/** The host's rflags/eflags. */
230	RTCCUINTREG fEFlags;
231
232	/** The VM-exit exit code qualification. */
233	uint64_t uExitQual;
234
235	/** The VMCS info. object. */
236	PVMXVMCSINFO pVmcsInfo;
237
238	/** The VM-exit interruption-information field. */
239	uint32_t uExitIntInfo;
240	/** The VM-exit instruction-length field. */
241	uint32_t cbExitInstr;
242
243	/** The VM-exit instruction-information field. */
244	VMXEXITINSTRINFO ExitInstrInfo;
245	/** IDT-vectoring information field. */
246	uint32_t uIdtVectoringInfo;
247
248	/** IDT-vectoring error code. */
249	uint32_t uIdtVectoringErrorCode;
250	uint32_t u32Alignment0;
251
252	/** The Guest-linear address. */
253	uint64_t uGuestLinearAddr;
254
255	/** The Guest-physical address. */
256	uint64_t uGuestPhysicalAddr;
257
258	/** The Guest pending-debug exceptions. */
259	uint64_t uGuestPendingDbgXcpts;
260
261	/** The VM-entry interruption-information field. */
262	uint32_t uEntryIntInfo;
263	/** The VM-entry exception error code field. */
264	uint32_t uEntryXcptErrorCode;
265
266	/** The VM-entry instruction length field. */
267	uint32_t cbEntryInstr;
268	} VMXTRANSIENT;
269	AssertCompileMemberSize(VMXTRANSIENT, ExitInstrInfo, sizeof(uint32_t));
270	AssertCompileMemberAlignment(VMXTRANSIENT, fVmcsFieldsRead, 8);
271	AssertCompileMemberAlignment(VMXTRANSIENT, fVectoringPF, 8);
272	AssertCompileMemberAlignment(VMXTRANSIENT, uExitReason, 8);
273	AssertCompileMemberAlignment(VMXTRANSIENT, fEFlags, 8);
274	AssertCompileMemberAlignment(VMXTRANSIENT, uExitQual, 8);
275	AssertCompileMemberAlignment(VMXTRANSIENT, pVmcsInfo, 8);
276	AssertCompileMemberAlignment(VMXTRANSIENT, uExitIntInfo, 8);
277	AssertCompileMemberAlignment(VMXTRANSIENT, ExitInstrInfo, 8);
278	AssertCompileMemberAlignment(VMXTRANSIENT, uIdtVectoringErrorCode, 8);
279	AssertCompileMemberAlignment(VMXTRANSIENT, uGuestLinearAddr, 8);
280	AssertCompileMemberAlignment(VMXTRANSIENT, uGuestPhysicalAddr, 8);
281	AssertCompileMemberAlignment(VMXTRANSIENT, uEntryIntInfo, 8);
282	AssertCompileMemberAlignment(VMXTRANSIENT, cbEntryInstr, 8);
283	/** Pointer to VMX transient state. */
284	typedef VMXTRANSIENT *PVMXTRANSIENT;
285	/** Pointer to a const VMX transient state. */
286	typedef const VMXTRANSIENT *PCVMXTRANSIENT;
287
288	/**
289	* VMX page allocation information.
290	*/
291	typedef struct
292	{
293	uint32_t fValid; /*< Whether to allocate this page (e.g, based on a CPU feature). /
294	uint32_t uPadding0; /*< Padding to ensure array of these structs are aligned to a multiple of 8. /
295	PRTHCPHYS pHCPhys; /*< Where to store the host-physical address of the allocation. /
296	PRTR0PTR ppVirt; /*< Where to store the host-virtual address of the allocation. /
297	} VMXPAGEALLOCINFO;
298	/** Pointer to VMX page-allocation info. */
299	typedef VMXPAGEALLOCINFO *PVMXPAGEALLOCINFO;
300	/** Pointer to a const VMX page-allocation info. */
301	typedef const VMXPAGEALLOCINFO *PCVMXPAGEALLOCINFO;
302	AssertCompileSizeAlignment(VMXPAGEALLOCINFO, 8);
303
304	/**
305	* Memory operand read or write access.
306	*/
307	typedef enum VMXMEMACCESS
308	{
309	VMXMEMACCESS_READ = 0,
310	VMXMEMACCESS_WRITE = 1
311	} VMXMEMACCESS;
312
313	/**
314	* VMX VM-exit handler.
315	*
316	* @returns Strict VBox status code (i.e. informational status codes too).
317	* @param pVCpu The cross context virtual CPU structure.
318	* @param pVmxTransient The VMX-transient structure.
319	*/
320	#ifndef HMVMX_USE_FUNCTION_TABLE
321	typedef VBOXSTRICTRC FNVMXEXITHANDLER(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient);
322	#else
323	typedef DECLCALLBACKTYPE(VBOXSTRICTRC, FNVMXEXITHANDLER,(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient));
324	/** Pointer to VM-exit handler. */
325	typedef FNVMXEXITHANDLER *PFNVMXEXITHANDLER;
326	#endif
327
328	/**
329	* VMX VM-exit handler, non-strict status code.
330	*
331	* This is generally the same as FNVMXEXITHANDLER, the NSRC bit is just FYI.
332	*
333	* @returns VBox status code, no informational status code returned.
334	* @param pVCpu The cross context virtual CPU structure.
335	* @param pVmxTransient The VMX-transient structure.
336	*
337	* @remarks This is not used on anything returning VERR_EM_INTERPRETER as the
338	* use of that status code will be replaced with VINF_EM_SOMETHING
339	* later when switching over to IEM.
340	*/
341	#ifndef HMVMX_USE_FUNCTION_TABLE
342	typedef int FNVMXEXITHANDLERNSRC(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient);
343	#else
344	typedef FNVMXEXITHANDLER FNVMXEXITHANDLERNSRC;
345	#endif
346
347
348	/*********************************************************************************************************************************
349	* Internal Functions *
350	*********************************************************************************************************************************/
351	#ifndef HMVMX_USE_FUNCTION_TABLE
352	DECLINLINE(VBOXSTRICTRC) hmR0VmxHandleExit(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient);
353	# define HMVMX_EXIT_DECL DECLINLINE(VBOXSTRICTRC)
354	# define HMVMX_EXIT_NSRC_DECL DECLINLINE(int)
355	#else
356	# define HMVMX_EXIT_DECL static DECLCALLBACK(VBOXSTRICTRC)
357	# define HMVMX_EXIT_NSRC_DECL HMVMX_EXIT_DECL
358	#endif
359	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
360	DECLINLINE(VBOXSTRICTRC) hmR0VmxHandleExitNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient);
361	#endif
362
363	static int hmR0VmxImportGuestState(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint64_t fWhat);
364
365	/** @name VM-exit handler prototypes.
366	* @{
367	*/
368	static FNVMXEXITHANDLER hmR0VmxExitXcptOrNmi;
369	static FNVMXEXITHANDLER hmR0VmxExitExtInt;
370	static FNVMXEXITHANDLER hmR0VmxExitTripleFault;
371	static FNVMXEXITHANDLERNSRC hmR0VmxExitIntWindow;
372	static FNVMXEXITHANDLERNSRC hmR0VmxExitNmiWindow;
373	static FNVMXEXITHANDLER hmR0VmxExitTaskSwitch;
374	static FNVMXEXITHANDLER hmR0VmxExitCpuid;
375	static FNVMXEXITHANDLER hmR0VmxExitGetsec;
376	static FNVMXEXITHANDLER hmR0VmxExitHlt;
377	static FNVMXEXITHANDLERNSRC hmR0VmxExitInvd;
378	static FNVMXEXITHANDLER hmR0VmxExitInvlpg;
379	static FNVMXEXITHANDLER hmR0VmxExitRdpmc;
380	static FNVMXEXITHANDLER hmR0VmxExitVmcall;
381	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
382	static FNVMXEXITHANDLER hmR0VmxExitVmclear;
383	static FNVMXEXITHANDLER hmR0VmxExitVmlaunch;
384	static FNVMXEXITHANDLER hmR0VmxExitVmptrld;
385	static FNVMXEXITHANDLER hmR0VmxExitVmptrst;
386	static FNVMXEXITHANDLER hmR0VmxExitVmread;
387	static FNVMXEXITHANDLER hmR0VmxExitVmresume;
388	static FNVMXEXITHANDLER hmR0VmxExitVmwrite;
389	static FNVMXEXITHANDLER hmR0VmxExitVmxoff;
390	static FNVMXEXITHANDLER hmR0VmxExitVmxon;
391	static FNVMXEXITHANDLER hmR0VmxExitInvvpid;
392	#endif
393	static FNVMXEXITHANDLER hmR0VmxExitRdtsc;
394	static FNVMXEXITHANDLER hmR0VmxExitMovCRx;
395	static FNVMXEXITHANDLER hmR0VmxExitMovDRx;
396	static FNVMXEXITHANDLER hmR0VmxExitIoInstr;
397	static FNVMXEXITHANDLER hmR0VmxExitRdmsr;
398	static FNVMXEXITHANDLER hmR0VmxExitWrmsr;
399	static FNVMXEXITHANDLER hmR0VmxExitMwait;
400	static FNVMXEXITHANDLER hmR0VmxExitMtf;
401	static FNVMXEXITHANDLER hmR0VmxExitMonitor;
402	static FNVMXEXITHANDLER hmR0VmxExitPause;
403	static FNVMXEXITHANDLERNSRC hmR0VmxExitTprBelowThreshold;
404	static FNVMXEXITHANDLER hmR0VmxExitApicAccess;
405	static FNVMXEXITHANDLER hmR0VmxExitEptViolation;
406	static FNVMXEXITHANDLER hmR0VmxExitEptMisconfig;
407	static FNVMXEXITHANDLER hmR0VmxExitRdtscp;
408	static FNVMXEXITHANDLER hmR0VmxExitPreemptTimer;
409	static FNVMXEXITHANDLERNSRC hmR0VmxExitWbinvd;
410	static FNVMXEXITHANDLER hmR0VmxExitXsetbv;
411	static FNVMXEXITHANDLER hmR0VmxExitInvpcid;
412	static FNVMXEXITHANDLERNSRC hmR0VmxExitSetPendingXcptUD;
413	static FNVMXEXITHANDLERNSRC hmR0VmxExitErrInvalidGuestState;
414	static FNVMXEXITHANDLERNSRC hmR0VmxExitErrUnexpected;
415	/** @} */
416
417	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
418	/** @name Nested-guest VM-exit handler prototypes.
419	* @{
420	*/
421	static FNVMXEXITHANDLER hmR0VmxExitXcptOrNmiNested;
422	static FNVMXEXITHANDLER hmR0VmxExitTripleFaultNested;
423	static FNVMXEXITHANDLERNSRC hmR0VmxExitIntWindowNested;
424	static FNVMXEXITHANDLERNSRC hmR0VmxExitNmiWindowNested;
425	static FNVMXEXITHANDLER hmR0VmxExitTaskSwitchNested;
426	static FNVMXEXITHANDLER hmR0VmxExitHltNested;
427	static FNVMXEXITHANDLER hmR0VmxExitInvlpgNested;
428	static FNVMXEXITHANDLER hmR0VmxExitRdpmcNested;
429	static FNVMXEXITHANDLER hmR0VmxExitVmreadVmwriteNested;
430	static FNVMXEXITHANDLER hmR0VmxExitRdtscNested;
431	static FNVMXEXITHANDLER hmR0VmxExitMovCRxNested;
432	static FNVMXEXITHANDLER hmR0VmxExitMovDRxNested;
433	static FNVMXEXITHANDLER hmR0VmxExitIoInstrNested;
434	static FNVMXEXITHANDLER hmR0VmxExitRdmsrNested;
435	static FNVMXEXITHANDLER hmR0VmxExitWrmsrNested;
436	static FNVMXEXITHANDLER hmR0VmxExitMwaitNested;
437	static FNVMXEXITHANDLER hmR0VmxExitMtfNested;
438	static FNVMXEXITHANDLER hmR0VmxExitMonitorNested;
439	static FNVMXEXITHANDLER hmR0VmxExitPauseNested;
440	static FNVMXEXITHANDLERNSRC hmR0VmxExitTprBelowThresholdNested;
441	static FNVMXEXITHANDLER hmR0VmxExitApicAccessNested;
442	static FNVMXEXITHANDLER hmR0VmxExitApicWriteNested;
443	static FNVMXEXITHANDLER hmR0VmxExitVirtEoiNested;
444	static FNVMXEXITHANDLER hmR0VmxExitRdtscpNested;
445	static FNVMXEXITHANDLERNSRC hmR0VmxExitWbinvdNested;
446	static FNVMXEXITHANDLER hmR0VmxExitInvpcidNested;
447	static FNVMXEXITHANDLERNSRC hmR0VmxExitErrInvalidGuestStateNested;
448	static FNVMXEXITHANDLER hmR0VmxExitInstrNested;
449	static FNVMXEXITHANDLER hmR0VmxExitInstrWithInfoNested;
450	/** @} */
451	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
452
453
454	/*********************************************************************************************************************************
455	* Global Variables *
456	*********************************************************************************************************************************/
457	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
458	/**
459	* Array of all VMCS fields.
460	* Any fields added to the VT-x spec. should be added here.
461	*
462	* Currently only used to derive shadow VMCS fields for hardware-assisted execution
463	* of nested-guests.
464	*/
465	static const uint32_t g_aVmcsFields[] =
466	{
467	/* 16-bit control fields. */
468	VMX_VMCS16_VPID,
469	VMX_VMCS16_POSTED_INT_NOTIFY_VECTOR,
470	VMX_VMCS16_EPTP_INDEX,
471
472	/* 16-bit guest-state fields. */
473	VMX_VMCS16_GUEST_ES_SEL,
474	VMX_VMCS16_GUEST_CS_SEL,
475	VMX_VMCS16_GUEST_SS_SEL,
476	VMX_VMCS16_GUEST_DS_SEL,
477	VMX_VMCS16_GUEST_FS_SEL,
478	VMX_VMCS16_GUEST_GS_SEL,
479	VMX_VMCS16_GUEST_LDTR_SEL,
480	VMX_VMCS16_GUEST_TR_SEL,
481	VMX_VMCS16_GUEST_INTR_STATUS,
482	VMX_VMCS16_GUEST_PML_INDEX,
483
484	/* 16-bits host-state fields. */
485	VMX_VMCS16_HOST_ES_SEL,
486	VMX_VMCS16_HOST_CS_SEL,
487	VMX_VMCS16_HOST_SS_SEL,
488	VMX_VMCS16_HOST_DS_SEL,
489	VMX_VMCS16_HOST_FS_SEL,
490	VMX_VMCS16_HOST_GS_SEL,
491	VMX_VMCS16_HOST_TR_SEL,
492
493	/* 64-bit control fields. */
494	VMX_VMCS64_CTRL_IO_BITMAP_A_FULL,
495	VMX_VMCS64_CTRL_IO_BITMAP_A_HIGH,
496	VMX_VMCS64_CTRL_IO_BITMAP_B_FULL,
497	VMX_VMCS64_CTRL_IO_BITMAP_B_HIGH,
498	VMX_VMCS64_CTRL_MSR_BITMAP_FULL,
499	VMX_VMCS64_CTRL_MSR_BITMAP_HIGH,
500	VMX_VMCS64_CTRL_EXIT_MSR_STORE_FULL,
501	VMX_VMCS64_CTRL_EXIT_MSR_STORE_HIGH,
502	VMX_VMCS64_CTRL_EXIT_MSR_LOAD_FULL,
503	VMX_VMCS64_CTRL_EXIT_MSR_LOAD_HIGH,
504	VMX_VMCS64_CTRL_ENTRY_MSR_LOAD_FULL,
505	VMX_VMCS64_CTRL_ENTRY_MSR_LOAD_HIGH,
506	VMX_VMCS64_CTRL_EXEC_VMCS_PTR_FULL,
507	VMX_VMCS64_CTRL_EXEC_VMCS_PTR_HIGH,
508	VMX_VMCS64_CTRL_EXEC_PML_ADDR_FULL,
509	VMX_VMCS64_CTRL_EXEC_PML_ADDR_HIGH,
510	VMX_VMCS64_CTRL_TSC_OFFSET_FULL,
511	VMX_VMCS64_CTRL_TSC_OFFSET_HIGH,
512	VMX_VMCS64_CTRL_VIRT_APIC_PAGEADDR_FULL,
513	VMX_VMCS64_CTRL_VIRT_APIC_PAGEADDR_HIGH,
514	VMX_VMCS64_CTRL_APIC_ACCESSADDR_FULL,
515	VMX_VMCS64_CTRL_APIC_ACCESSADDR_HIGH,
516	VMX_VMCS64_CTRL_POSTED_INTR_DESC_FULL,
517	VMX_VMCS64_CTRL_POSTED_INTR_DESC_HIGH,
518	VMX_VMCS64_CTRL_VMFUNC_CTRLS_FULL,
519	VMX_VMCS64_CTRL_VMFUNC_CTRLS_HIGH,
520	VMX_VMCS64_CTRL_EPTP_FULL,
521	VMX_VMCS64_CTRL_EPTP_HIGH,
522	VMX_VMCS64_CTRL_EOI_BITMAP_0_FULL,
523	VMX_VMCS64_CTRL_EOI_BITMAP_0_HIGH,
524	VMX_VMCS64_CTRL_EOI_BITMAP_1_FULL,
525	VMX_VMCS64_CTRL_EOI_BITMAP_1_HIGH,
526	VMX_VMCS64_CTRL_EOI_BITMAP_2_FULL,
527	VMX_VMCS64_CTRL_EOI_BITMAP_2_HIGH,
528	VMX_VMCS64_CTRL_EOI_BITMAP_3_FULL,
529	VMX_VMCS64_CTRL_EOI_BITMAP_3_HIGH,
530	VMX_VMCS64_CTRL_EPTP_LIST_FULL,
531	VMX_VMCS64_CTRL_EPTP_LIST_HIGH,
532	VMX_VMCS64_CTRL_VMREAD_BITMAP_FULL,
533	VMX_VMCS64_CTRL_VMREAD_BITMAP_HIGH,
534	VMX_VMCS64_CTRL_VMWRITE_BITMAP_FULL,
535	VMX_VMCS64_CTRL_VMWRITE_BITMAP_HIGH,
536	VMX_VMCS64_CTRL_VE_XCPT_INFO_ADDR_FULL,
537	VMX_VMCS64_CTRL_VE_XCPT_INFO_ADDR_HIGH,
538	VMX_VMCS64_CTRL_XSS_EXITING_BITMAP_FULL,
539	VMX_VMCS64_CTRL_XSS_EXITING_BITMAP_HIGH,
540	VMX_VMCS64_CTRL_ENCLS_EXITING_BITMAP_FULL,
541	VMX_VMCS64_CTRL_ENCLS_EXITING_BITMAP_HIGH,
542	VMX_VMCS64_CTRL_SPPTP_FULL,
543	VMX_VMCS64_CTRL_SPPTP_HIGH,
544	VMX_VMCS64_CTRL_TSC_MULTIPLIER_FULL,
545	VMX_VMCS64_CTRL_TSC_MULTIPLIER_HIGH,
546	VMX_VMCS64_CTRL_PROC_EXEC3_FULL,
547	VMX_VMCS64_CTRL_PROC_EXEC3_HIGH,
548	VMX_VMCS64_CTRL_ENCLV_EXITING_BITMAP_FULL,
549	VMX_VMCS64_CTRL_ENCLV_EXITING_BITMAP_HIGH,
550
551	/* 64-bit read-only data fields. */
552	VMX_VMCS64_RO_GUEST_PHYS_ADDR_FULL,
553	VMX_VMCS64_RO_GUEST_PHYS_ADDR_HIGH,
554
555	/* 64-bit guest-state fields. */
556	VMX_VMCS64_GUEST_VMCS_LINK_PTR_FULL,
557	VMX_VMCS64_GUEST_VMCS_LINK_PTR_HIGH,
558	VMX_VMCS64_GUEST_DEBUGCTL_FULL,
559	VMX_VMCS64_GUEST_DEBUGCTL_HIGH,
560	VMX_VMCS64_GUEST_PAT_FULL,
561	VMX_VMCS64_GUEST_PAT_HIGH,
562	VMX_VMCS64_GUEST_EFER_FULL,
563	VMX_VMCS64_GUEST_EFER_HIGH,
564	VMX_VMCS64_GUEST_PERF_GLOBAL_CTRL_FULL,
565	VMX_VMCS64_GUEST_PERF_GLOBAL_CTRL_HIGH,
566	VMX_VMCS64_GUEST_PDPTE0_FULL,
567	VMX_VMCS64_GUEST_PDPTE0_HIGH,
568	VMX_VMCS64_GUEST_PDPTE1_FULL,
569	VMX_VMCS64_GUEST_PDPTE1_HIGH,
570	VMX_VMCS64_GUEST_PDPTE2_FULL,
571	VMX_VMCS64_GUEST_PDPTE2_HIGH,
572	VMX_VMCS64_GUEST_PDPTE3_FULL,
573	VMX_VMCS64_GUEST_PDPTE3_HIGH,
574	VMX_VMCS64_GUEST_BNDCFGS_FULL,
575	VMX_VMCS64_GUEST_BNDCFGS_HIGH,
576	VMX_VMCS64_GUEST_RTIT_CTL_FULL,
577	VMX_VMCS64_GUEST_RTIT_CTL_HIGH,
578	VMX_VMCS64_GUEST_PKRS_FULL,
579	VMX_VMCS64_GUEST_PKRS_HIGH,
580
581	/* 64-bit host-state fields. */
582	VMX_VMCS64_HOST_PAT_FULL,
583	VMX_VMCS64_HOST_PAT_HIGH,
584	VMX_VMCS64_HOST_EFER_FULL,
585	VMX_VMCS64_HOST_EFER_HIGH,
586	VMX_VMCS64_HOST_PERF_GLOBAL_CTRL_FULL,
587	VMX_VMCS64_HOST_PERF_GLOBAL_CTRL_HIGH,
588	VMX_VMCS64_HOST_PKRS_FULL,
589	VMX_VMCS64_HOST_PKRS_HIGH,
590
591	/* 32-bit control fields. */
592	VMX_VMCS32_CTRL_PIN_EXEC,
593	VMX_VMCS32_CTRL_PROC_EXEC,
594	VMX_VMCS32_CTRL_EXCEPTION_BITMAP,
595	VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MASK,
596	VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MATCH,
597	VMX_VMCS32_CTRL_CR3_TARGET_COUNT,
598	VMX_VMCS32_CTRL_EXIT,
599	VMX_VMCS32_CTRL_EXIT_MSR_STORE_COUNT,
600	VMX_VMCS32_CTRL_EXIT_MSR_LOAD_COUNT,
601	VMX_VMCS32_CTRL_ENTRY,
602	VMX_VMCS32_CTRL_ENTRY_MSR_LOAD_COUNT,
603	VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO,
604	VMX_VMCS32_CTRL_ENTRY_EXCEPTION_ERRCODE,
605	VMX_VMCS32_CTRL_ENTRY_INSTR_LENGTH,
606	VMX_VMCS32_CTRL_TPR_THRESHOLD,
607	VMX_VMCS32_CTRL_PROC_EXEC2,
608	VMX_VMCS32_CTRL_PLE_GAP,
609	VMX_VMCS32_CTRL_PLE_WINDOW,
610
611	/* 32-bits read-only fields. */
612	VMX_VMCS32_RO_VM_INSTR_ERROR,
613	VMX_VMCS32_RO_EXIT_REASON,
614	VMX_VMCS32_RO_EXIT_INTERRUPTION_INFO,
615	VMX_VMCS32_RO_EXIT_INTERRUPTION_ERROR_CODE,
616	VMX_VMCS32_RO_IDT_VECTORING_INFO,
617	VMX_VMCS32_RO_IDT_VECTORING_ERROR_CODE,
618	VMX_VMCS32_RO_EXIT_INSTR_LENGTH,
619	VMX_VMCS32_RO_EXIT_INSTR_INFO,
620
621	/* 32-bit guest-state fields. */
622	VMX_VMCS32_GUEST_ES_LIMIT,
623	VMX_VMCS32_GUEST_CS_LIMIT,
624	VMX_VMCS32_GUEST_SS_LIMIT,
625	VMX_VMCS32_GUEST_DS_LIMIT,
626	VMX_VMCS32_GUEST_FS_LIMIT,
627	VMX_VMCS32_GUEST_GS_LIMIT,
628	VMX_VMCS32_GUEST_LDTR_LIMIT,
629	VMX_VMCS32_GUEST_TR_LIMIT,
630	VMX_VMCS32_GUEST_GDTR_LIMIT,
631	VMX_VMCS32_GUEST_IDTR_LIMIT,
632	VMX_VMCS32_GUEST_ES_ACCESS_RIGHTS,
633	VMX_VMCS32_GUEST_CS_ACCESS_RIGHTS,
634	VMX_VMCS32_GUEST_SS_ACCESS_RIGHTS,
635	VMX_VMCS32_GUEST_DS_ACCESS_RIGHTS,
636	VMX_VMCS32_GUEST_FS_ACCESS_RIGHTS,
637	VMX_VMCS32_GUEST_GS_ACCESS_RIGHTS,
638	VMX_VMCS32_GUEST_LDTR_ACCESS_RIGHTS,
639	VMX_VMCS32_GUEST_TR_ACCESS_RIGHTS,
640	VMX_VMCS32_GUEST_INT_STATE,
641	VMX_VMCS32_GUEST_ACTIVITY_STATE,
642	VMX_VMCS32_GUEST_SMBASE,
643	VMX_VMCS32_GUEST_SYSENTER_CS,
644	VMX_VMCS32_PREEMPT_TIMER_VALUE,
645
646	/* 32-bit host-state fields. */
647	VMX_VMCS32_HOST_SYSENTER_CS,
648
649	/* Natural-width control fields. */
650	VMX_VMCS_CTRL_CR0_MASK,
651	VMX_VMCS_CTRL_CR4_MASK,
652	VMX_VMCS_CTRL_CR0_READ_SHADOW,
653	VMX_VMCS_CTRL_CR4_READ_SHADOW,
654	VMX_VMCS_CTRL_CR3_TARGET_VAL0,
655	VMX_VMCS_CTRL_CR3_TARGET_VAL1,
656	VMX_VMCS_CTRL_CR3_TARGET_VAL2,
657	VMX_VMCS_CTRL_CR3_TARGET_VAL3,
658
659	/* Natural-width read-only data fields. */
660	VMX_VMCS_RO_EXIT_QUALIFICATION,
661	VMX_VMCS_RO_IO_RCX,
662	VMX_VMCS_RO_IO_RSI,
663	VMX_VMCS_RO_IO_RDI,
664	VMX_VMCS_RO_IO_RIP,
665	VMX_VMCS_RO_GUEST_LINEAR_ADDR,
666
667	/* Natural-width guest-state field */
668	VMX_VMCS_GUEST_CR0,
669	VMX_VMCS_GUEST_CR3,
670	VMX_VMCS_GUEST_CR4,
671	VMX_VMCS_GUEST_ES_BASE,
672	VMX_VMCS_GUEST_CS_BASE,
673	VMX_VMCS_GUEST_SS_BASE,
674	VMX_VMCS_GUEST_DS_BASE,
675	VMX_VMCS_GUEST_FS_BASE,
676	VMX_VMCS_GUEST_GS_BASE,
677	VMX_VMCS_GUEST_LDTR_BASE,
678	VMX_VMCS_GUEST_TR_BASE,
679	VMX_VMCS_GUEST_GDTR_BASE,
680	VMX_VMCS_GUEST_IDTR_BASE,
681	VMX_VMCS_GUEST_DR7,
682	VMX_VMCS_GUEST_RSP,
683	VMX_VMCS_GUEST_RIP,
684	VMX_VMCS_GUEST_RFLAGS,
685	VMX_VMCS_GUEST_PENDING_DEBUG_XCPTS,
686	VMX_VMCS_GUEST_SYSENTER_ESP,
687	VMX_VMCS_GUEST_SYSENTER_EIP,
688	VMX_VMCS_GUEST_S_CET,
689	VMX_VMCS_GUEST_SSP,
690	VMX_VMCS_GUEST_INTR_SSP_TABLE_ADDR,
691
692	/* Natural-width host-state fields */
693	VMX_VMCS_HOST_CR0,
694	VMX_VMCS_HOST_CR3,
695	VMX_VMCS_HOST_CR4,
696	VMX_VMCS_HOST_FS_BASE,
697	VMX_VMCS_HOST_GS_BASE,
698	VMX_VMCS_HOST_TR_BASE,
699	VMX_VMCS_HOST_GDTR_BASE,
700	VMX_VMCS_HOST_IDTR_BASE,
701	VMX_VMCS_HOST_SYSENTER_ESP,
702	VMX_VMCS_HOST_SYSENTER_EIP,
703	VMX_VMCS_HOST_RSP,
704	VMX_VMCS_HOST_RIP,
705	VMX_VMCS_HOST_S_CET,
706	VMX_VMCS_HOST_SSP,
707	VMX_VMCS_HOST_INTR_SSP_TABLE_ADDR
708	};
709	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
710
711	#ifdef VBOX_STRICT
712	static const uint32_t g_aVmcsSegBase[] =
713	{
714	VMX_VMCS_GUEST_ES_BASE,
715	VMX_VMCS_GUEST_CS_BASE,
716	VMX_VMCS_GUEST_SS_BASE,
717	VMX_VMCS_GUEST_DS_BASE,
718	VMX_VMCS_GUEST_FS_BASE,
719	VMX_VMCS_GUEST_GS_BASE
720	};
721	static const uint32_t g_aVmcsSegSel[] =
722	{
723	VMX_VMCS16_GUEST_ES_SEL,
724	VMX_VMCS16_GUEST_CS_SEL,
725	VMX_VMCS16_GUEST_SS_SEL,
726	VMX_VMCS16_GUEST_DS_SEL,
727	VMX_VMCS16_GUEST_FS_SEL,
728	VMX_VMCS16_GUEST_GS_SEL
729	};
730	static const uint32_t g_aVmcsSegLimit[] =
731	{
732	VMX_VMCS32_GUEST_ES_LIMIT,
733	VMX_VMCS32_GUEST_CS_LIMIT,
734	VMX_VMCS32_GUEST_SS_LIMIT,
735	VMX_VMCS32_GUEST_DS_LIMIT,
736	VMX_VMCS32_GUEST_FS_LIMIT,
737	VMX_VMCS32_GUEST_GS_LIMIT
738	};
739	static const uint32_t g_aVmcsSegAttr[] =
740	{
741	VMX_VMCS32_GUEST_ES_ACCESS_RIGHTS,
742	VMX_VMCS32_GUEST_CS_ACCESS_RIGHTS,
743	VMX_VMCS32_GUEST_SS_ACCESS_RIGHTS,
744	VMX_VMCS32_GUEST_DS_ACCESS_RIGHTS,
745	VMX_VMCS32_GUEST_FS_ACCESS_RIGHTS,
746	VMX_VMCS32_GUEST_GS_ACCESS_RIGHTS
747	};
748	AssertCompile(RT_ELEMENTS(g_aVmcsSegSel) == X86_SREG_COUNT);
749	AssertCompile(RT_ELEMENTS(g_aVmcsSegLimit) == X86_SREG_COUNT);
750	AssertCompile(RT_ELEMENTS(g_aVmcsSegBase) == X86_SREG_COUNT);
751	AssertCompile(RT_ELEMENTS(g_aVmcsSegAttr) == X86_SREG_COUNT);
752	#endif /* VBOX_STRICT */
753
754	#ifdef HMVMX_USE_FUNCTION_TABLE
755	/**
756	* VMX_EXIT dispatch table.
757	*/
758	static const struct CLANG11NOTHROWWEIRDNESS { PFNVMXEXITHANDLER pfn; } g_aVMExitHandlers[VMX_EXIT_MAX + 1] =
759	{
760	/* 0 VMX_EXIT_XCPT_OR_NMI */ { hmR0VmxExitXcptOrNmi },
761	/* 1 VMX_EXIT_EXT_INT */ { hmR0VmxExitExtInt },
762	/* 2 VMX_EXIT_TRIPLE_FAULT */ { hmR0VmxExitTripleFault },
763	/* 3 VMX_EXIT_INIT_SIGNAL */ { hmR0VmxExitErrUnexpected },
764	/* 4 VMX_EXIT_SIPI */ { hmR0VmxExitErrUnexpected },
765	/* 5 VMX_EXIT_IO_SMI */ { hmR0VmxExitErrUnexpected },
766	/* 6 VMX_EXIT_SMI */ { hmR0VmxExitErrUnexpected },
767	/* 7 VMX_EXIT_INT_WINDOW */ { hmR0VmxExitIntWindow },
768	/* 8 VMX_EXIT_NMI_WINDOW */ { hmR0VmxExitNmiWindow },
769	/* 9 VMX_EXIT_TASK_SWITCH */ { hmR0VmxExitTaskSwitch },
770	/* 10 VMX_EXIT_CPUID */ { hmR0VmxExitCpuid },
771	/* 11 VMX_EXIT_GETSEC */ { hmR0VmxExitGetsec },
772	/* 12 VMX_EXIT_HLT */ { hmR0VmxExitHlt },
773	/* 13 VMX_EXIT_INVD */ { hmR0VmxExitInvd },
774	/* 14 VMX_EXIT_INVLPG */ { hmR0VmxExitInvlpg },
775	/* 15 VMX_EXIT_RDPMC */ { hmR0VmxExitRdpmc },
776	/* 16 VMX_EXIT_RDTSC */ { hmR0VmxExitRdtsc },
777	/* 17 VMX_EXIT_RSM */ { hmR0VmxExitErrUnexpected },
778	/* 18 VMX_EXIT_VMCALL */ { hmR0VmxExitVmcall },
779	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
780	/* 19 VMX_EXIT_VMCLEAR */ { hmR0VmxExitVmclear },
781	/* 20 VMX_EXIT_VMLAUNCH */ { hmR0VmxExitVmlaunch },
782	/* 21 VMX_EXIT_VMPTRLD */ { hmR0VmxExitVmptrld },
783	/* 22 VMX_EXIT_VMPTRST */ { hmR0VmxExitVmptrst },
784	/* 23 VMX_EXIT_VMREAD */ { hmR0VmxExitVmread },
785	/* 24 VMX_EXIT_VMRESUME */ { hmR0VmxExitVmresume },
786	/* 25 VMX_EXIT_VMWRITE */ { hmR0VmxExitVmwrite },
787	/* 26 VMX_EXIT_VMXOFF */ { hmR0VmxExitVmxoff },
788	/* 27 VMX_EXIT_VMXON */ { hmR0VmxExitVmxon },
789	#else
790	/* 19 VMX_EXIT_VMCLEAR */ { hmR0VmxExitSetPendingXcptUD },
791	/* 20 VMX_EXIT_VMLAUNCH */ { hmR0VmxExitSetPendingXcptUD },
792	/* 21 VMX_EXIT_VMPTRLD */ { hmR0VmxExitSetPendingXcptUD },
793	/* 22 VMX_EXIT_VMPTRST */ { hmR0VmxExitSetPendingXcptUD },
794	/* 23 VMX_EXIT_VMREAD */ { hmR0VmxExitSetPendingXcptUD },
795	/* 24 VMX_EXIT_VMRESUME */ { hmR0VmxExitSetPendingXcptUD },
796	/* 25 VMX_EXIT_VMWRITE */ { hmR0VmxExitSetPendingXcptUD },
797	/* 26 VMX_EXIT_VMXOFF */ { hmR0VmxExitSetPendingXcptUD },
798	/* 27 VMX_EXIT_VMXON */ { hmR0VmxExitSetPendingXcptUD },
799	#endif
800	/* 28 VMX_EXIT_MOV_CRX */ { hmR0VmxExitMovCRx },
801	/* 29 VMX_EXIT_MOV_DRX */ { hmR0VmxExitMovDRx },
802	/* 30 VMX_EXIT_IO_INSTR */ { hmR0VmxExitIoInstr },
803	/* 31 VMX_EXIT_RDMSR */ { hmR0VmxExitRdmsr },
804	/* 32 VMX_EXIT_WRMSR */ { hmR0VmxExitWrmsr },
805	/* 33 VMX_EXIT_ERR_INVALID_GUEST_STATE */ { hmR0VmxExitErrInvalidGuestState },
806	/* 34 VMX_EXIT_ERR_MSR_LOAD */ { hmR0VmxExitErrUnexpected },
807	/* 35 UNDEFINED */ { hmR0VmxExitErrUnexpected },
808	/* 36 VMX_EXIT_MWAIT */ { hmR0VmxExitMwait },
809	/* 37 VMX_EXIT_MTF */ { hmR0VmxExitMtf },
810	/* 38 UNDEFINED */ { hmR0VmxExitErrUnexpected },
811	/* 39 VMX_EXIT_MONITOR */ { hmR0VmxExitMonitor },
812	/* 40 VMX_EXIT_PAUSE */ { hmR0VmxExitPause },
813	/* 41 VMX_EXIT_ERR_MACHINE_CHECK */ { hmR0VmxExitErrUnexpected },
814	/* 42 UNDEFINED */ { hmR0VmxExitErrUnexpected },
815	/* 43 VMX_EXIT_TPR_BELOW_THRESHOLD */ { hmR0VmxExitTprBelowThreshold },
816	/* 44 VMX_EXIT_APIC_ACCESS */ { hmR0VmxExitApicAccess },
817	/* 45 VMX_EXIT_VIRTUALIZED_EOI */ { hmR0VmxExitErrUnexpected },
818	/* 46 VMX_EXIT_GDTR_IDTR_ACCESS */ { hmR0VmxExitErrUnexpected },
819	/* 47 VMX_EXIT_LDTR_TR_ACCESS */ { hmR0VmxExitErrUnexpected },
820	/* 48 VMX_EXIT_EPT_VIOLATION */ { hmR0VmxExitEptViolation },
821	/* 49 VMX_EXIT_EPT_MISCONFIG */ { hmR0VmxExitEptMisconfig },
822	/* 50 VMX_EXIT_INVEPT */ { hmR0VmxExitSetPendingXcptUD },
823	/* 51 VMX_EXIT_RDTSCP */ { hmR0VmxExitRdtscp },
824	/* 52 VMX_EXIT_PREEMPT_TIMER */ { hmR0VmxExitPreemptTimer },
825	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
826	/* 53 VMX_EXIT_INVVPID */ { hmR0VmxExitInvvpid },
827	#else
828	/* 53 VMX_EXIT_INVVPID */ { hmR0VmxExitSetPendingXcptUD },
829	#endif
830	/* 54 VMX_EXIT_WBINVD */ { hmR0VmxExitWbinvd },
831	/* 55 VMX_EXIT_XSETBV */ { hmR0VmxExitXsetbv },
832	/* 56 VMX_EXIT_APIC_WRITE */ { hmR0VmxExitErrUnexpected },
833	/* 57 VMX_EXIT_RDRAND */ { hmR0VmxExitErrUnexpected },
834	/* 58 VMX_EXIT_INVPCID */ { hmR0VmxExitInvpcid },
835	/* 59 VMX_EXIT_VMFUNC */ { hmR0VmxExitErrUnexpected },
836	/* 60 VMX_EXIT_ENCLS */ { hmR0VmxExitErrUnexpected },
837	/* 61 VMX_EXIT_RDSEED */ { hmR0VmxExitErrUnexpected },
838	/* 62 VMX_EXIT_PML_FULL */ { hmR0VmxExitErrUnexpected },
839	/* 63 VMX_EXIT_XSAVES */ { hmR0VmxExitErrUnexpected },
840	/* 64 VMX_EXIT_XRSTORS */ { hmR0VmxExitErrUnexpected },
841	/* 65 UNDEFINED */ { hmR0VmxExitErrUnexpected },
842	/* 66 VMX_EXIT_SPP_EVENT */ { hmR0VmxExitErrUnexpected },
843	/* 67 VMX_EXIT_UMWAIT */ { hmR0VmxExitErrUnexpected },
844	/* 68 VMX_EXIT_TPAUSE */ { hmR0VmxExitErrUnexpected },
845	/* 69 VMX_EXIT_LOADIWKEY */ { hmR0VmxExitErrUnexpected },
846	};
847	#endif /* HMVMX_USE_FUNCTION_TABLE */
848
849	#if defined(VBOX_STRICT) && defined(LOG_ENABLED)
850	static const char * const g_apszVmxInstrErrors[HMVMX_INSTR_ERROR_MAX + 1] =
851	{
852	/* 0 */ "(Not Used)",
853	/* 1 */ "VMCALL executed in VMX root operation.",
854	/* 2 */ "VMCLEAR with invalid physical address.",
855	/* 3 */ "VMCLEAR with VMXON pointer.",
856	/* 4 */ "VMLAUNCH with non-clear VMCS.",
857	/* 5 */ "VMRESUME with non-launched VMCS.",
858	/* 6 */ "VMRESUME after VMXOFF",
859	/* 7 */ "VM-entry with invalid control fields.",
860	/* 8 */ "VM-entry with invalid host state fields.",
861	/* 9 */ "VMPTRLD with invalid physical address.",
862	/* 10 */ "VMPTRLD with VMXON pointer.",
863	/* 11 */ "VMPTRLD with incorrect revision identifier.",
864	/* 12 */ "VMREAD/VMWRITE from/to unsupported VMCS component.",
865	/* 13 */ "VMWRITE to read-only VMCS component.",
866	/* 14 */ "(Not Used)",
867	/* 15 */ "VMXON executed in VMX root operation.",
868	/* 16 */ "VM-entry with invalid executive-VMCS pointer.",
869	/* 17 */ "VM-entry with non-launched executing VMCS.",
870	/* 18 */ "VM-entry with executive-VMCS pointer not VMXON pointer.",
871	/* 19 */ "VMCALL with non-clear VMCS.",
872	/* 20 */ "VMCALL with invalid VM-exit control fields.",
873	/* 21 */ "(Not Used)",
874	/* 22 */ "VMCALL with incorrect MSEG revision identifier.",
875	/* 23 */ "VMXOFF under dual monitor treatment of SMIs and SMM.",
876	/* 24 */ "VMCALL with invalid SMM-monitor features.",
877	/* 25 */ "VM-entry with invalid VM-execution control fields in executive VMCS.",
878	/* 26 */ "VM-entry with events blocked by MOV SS.",
879	/* 27 */ "(Not Used)",
880	/* 28 */ "Invalid operand to INVEPT/INVVPID."
881	};
882	#endif /* VBOX_STRICT && LOG_ENABLED */
883
884
885	/**
886	* Checks if the given MSR is part of the lastbranch-from-IP MSR stack.
887	* @returns @c true if it's part of LBR stack, @c false otherwise.
888	*
889	* @param pVM The cross context VM structure.
890	* @param idMsr The MSR.
891	* @param pidxMsr Where to store the index of the MSR in the LBR MSR array.
892	* Optional, can be NULL.
893	*
894	* @remarks Must only be called when LBR is enabled.
895	*/
896	DECL_FORCE_INLINE(bool) hmR0VmxIsLbrBranchFromMsr(PCVMCC pVM, uint32_t idMsr, uint32_t *pidxMsr)
897	{
898	Assert(pVM->hmr0.s.vmx.fLbr);
899	Assert(pVM->hmr0.s.vmx.idLbrFromIpMsrFirst);
900	uint32_t const cLbrStack = pVM->hmr0.s.vmx.idLbrFromIpMsrLast - pVM->hmr0.s.vmx.idLbrFromIpMsrFirst + 1;
901	uint32_t const idxMsr = idMsr - pVM->hmr0.s.vmx.idLbrFromIpMsrFirst;
902	if (idxMsr < cLbrStack)
903	{
904	if (pidxMsr)
905	*pidxMsr = idxMsr;
906	return true;
907	}
908	return false;
909	}
910
911
912	/**
913	* Checks if the given MSR is part of the lastbranch-to-IP MSR stack.
914	* @returns @c true if it's part of LBR stack, @c false otherwise.
915	*
916	* @param pVM The cross context VM structure.
917	* @param idMsr The MSR.
918	* @param pidxMsr Where to store the index of the MSR in the LBR MSR array.
919	* Optional, can be NULL.
920	*
921	* @remarks Must only be called when LBR is enabled and when lastbranch-to-IP MSRs
922	* are supported by the CPU (see hmR0VmxSetupLbrMsrRange).
923	*/
924	DECL_FORCE_INLINE(bool) hmR0VmxIsLbrBranchToMsr(PCVMCC pVM, uint32_t idMsr, uint32_t *pidxMsr)
925	{
926	Assert(pVM->hmr0.s.vmx.fLbr);
927	if (pVM->hmr0.s.vmx.idLbrToIpMsrFirst)
928	{
929	uint32_t const cLbrStack = pVM->hmr0.s.vmx.idLbrToIpMsrLast - pVM->hmr0.s.vmx.idLbrToIpMsrFirst + 1;
930	uint32_t const idxMsr = idMsr - pVM->hmr0.s.vmx.idLbrToIpMsrFirst;
931	if (idxMsr < cLbrStack)
932	{
933	if (pidxMsr)
934	*pidxMsr = idxMsr;
935	return true;
936	}
937	}
938	return false;
939	}
940
941
942	/**
943	* Gets the CR0 guest/host mask.
944	*
945	* These bits typically does not change through the lifetime of a VM. Any bit set in
946	* this mask is owned by the host/hypervisor and would cause a VM-exit when modified
947	* by the guest.
948	*
949	* @returns The CR0 guest/host mask.
950	* @param pVCpu The cross context virtual CPU structure.
951	*/
952	static uint64_t hmR0VmxGetFixedCr0Mask(PCVMCPUCC pVCpu)
953	{
954	/*
955	* Modifications to CR0 bits that VT-x ignores saving/restoring (CD, ET, NW) and
956	* to CR0 bits that we require for shadow paging (PG) by the guest must cause VM-exits.
957	*
958	* Furthermore, modifications to any bits that are reserved/unspecified currently
959	* by the Intel spec. must also cause a VM-exit. This prevents unpredictable behavior
960	* when future CPUs specify and use currently reserved/unspecified bits.
961	*/
962	/** @todo Avoid intercepting CR0.PE with unrestricted guest execution. Fix PGM
963	* enmGuestMode to be in-sync with the current mode. See @bugref{6398}
964	* and @bugref{6944}. */
965	PCVMCC pVM = pVCpu->CTX_SUFF(pVM);
966	return ( X86_CR0_PE
967	\| X86_CR0_NE
968	\| (pVM->hmr0.s.fNestedPaging ? 0 : X86_CR0_WP)
969	\| X86_CR0_PG
970	\| VMX_EXIT_HOST_CR0_IGNORE_MASK);
971	}
972
973
974	/**
975	* Gets the CR4 guest/host mask.
976	*
977	* These bits typically does not change through the lifetime of a VM. Any bit set in
978	* this mask is owned by the host/hypervisor and would cause a VM-exit when modified
979	* by the guest.
980	*
981	* @returns The CR4 guest/host mask.
982	* @param pVCpu The cross context virtual CPU structure.
983	*/
984	static uint64_t hmR0VmxGetFixedCr4Mask(PCVMCPUCC pVCpu)
985	{
986	/*
987	* We construct a mask of all CR4 bits that the guest can modify without causing
988	* a VM-exit. Then invert this mask to obtain all CR4 bits that should cause
989	* a VM-exit when the guest attempts to modify them when executing using
990	* hardware-assisted VMX.
991	*
992	* When a feature is not exposed to the guest (and may be present on the host),
993	* we want to intercept guest modifications to the bit so we can emulate proper
994	* behavior (e.g., #GP).
995	*
996	* Furthermore, only modifications to those bits that don't require immediate
997	* emulation is allowed. For e.g., PCIDE is excluded because the behavior
998	* depends on CR3 which might not always be the guest value while executing
999	* using hardware-assisted VMX.
1000	*/
1001	PCVMCC pVM = pVCpu->CTX_SUFF(pVM);
1002	bool const fFsGsBase = pVM->cpum.ro.GuestFeatures.fFsGsBase;
1003	bool const fXSaveRstor = pVM->cpum.ro.GuestFeatures.fXSaveRstor;
1004	bool const fFxSaveRstor = pVM->cpum.ro.GuestFeatures.fFxSaveRstor;
1005
1006	/*
1007	* Paranoia.
1008	* Ensure features exposed to the guest are present on the host.
1009	*/
1010	Assert(!fFsGsBase \|\| pVM->cpum.ro.HostFeatures.fFsGsBase);
1011	Assert(!fXSaveRstor \|\| pVM->cpum.ro.HostFeatures.fXSaveRstor);
1012	Assert(!fFxSaveRstor \|\| pVM->cpum.ro.HostFeatures.fFxSaveRstor);
1013
1014	uint64_t const fGstMask = ( X86_CR4_PVI
1015	\| X86_CR4_TSD
1016	\| X86_CR4_DE
1017	\| X86_CR4_MCE
1018	\| X86_CR4_PCE
1019	\| X86_CR4_OSXMMEEXCPT
1020	\| (fFsGsBase ? X86_CR4_FSGSBASE : 0)
1021	\| (fXSaveRstor ? X86_CR4_OSXSAVE : 0)
1022	\| (fFxSaveRstor ? X86_CR4_OSFXSR : 0));
1023	return ~fGstMask;
1024	}
1025
1026
1027	/**
1028	* Gets the active (in use) VMCS info. object for the specified VCPU.
1029	*
1030	* This is either the guest or nested-guest VMCS info. and need not necessarily
1031	* pertain to the "current" VMCS (in the VMX definition of the term). For instance,
1032	* if the VM-entry failed due to an invalid-guest state, we may have "cleared" the
1033	* current VMCS while returning to ring-3. However, the VMCS info. object for that
1034	* VMCS would still be active and returned here so that we could dump the VMCS
1035	* fields to ring-3 for diagnostics. This function is thus only used to
1036	* distinguish between the nested-guest or guest VMCS.
1037	*
1038	* @returns The active VMCS information.
1039	* @param pVCpu The cross context virtual CPU structure.
1040	*
1041	* @thread EMT.
1042	* @remarks This function may be called with preemption or interrupts disabled!
1043	*/
1044	DECLINLINE(PVMXVMCSINFO) hmGetVmxActiveVmcsInfo(PVMCPUCC pVCpu)
1045	{
1046	if (!pVCpu->hmr0.s.vmx.fSwitchedToNstGstVmcs)
1047	return &pVCpu->hmr0.s.vmx.VmcsInfo;
1048	return &pVCpu->hmr0.s.vmx.VmcsInfoNstGst;
1049	}
1050
1051
1052	/**
1053	* Returns whether the VM-exit MSR-store area differs from the VM-exit MSR-load
1054	* area.
1055	*
1056	* @returns @c true if it's different, @c false otherwise.
1057	* @param pVmcsInfo The VMCS info. object.
1058	*/
1059	DECL_FORCE_INLINE(bool) hmR0VmxIsSeparateExitMsrStoreAreaVmcs(PCVMXVMCSINFO pVmcsInfo)
1060	{
1061	return RT_BOOL( pVmcsInfo->pvGuestMsrStore != pVmcsInfo->pvGuestMsrLoad
1062	&& pVmcsInfo->pvGuestMsrStore);
1063	}
1064
1065
1066	/**
1067	* Sets the given Processor-based VM-execution controls.
1068	*
1069	* @param pVmxTransient The VMX-transient structure.
1070	* @param uProcCtls The Processor-based VM-execution controls to set.
1071	*/
1072	static void hmR0VmxSetProcCtlsVmcs(PVMXTRANSIENT pVmxTransient, uint32_t uProcCtls)
1073	{
1074	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
1075	if ((pVmcsInfo->u32ProcCtls & uProcCtls) != uProcCtls)
1076	{
1077	pVmcsInfo->u32ProcCtls \|= uProcCtls;
1078	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
1079	AssertRC(rc);
1080	}
1081	}
1082
1083
1084	/**
1085	* Removes the given Processor-based VM-execution controls.
1086	*
1087	* @param pVCpu The cross context virtual CPU structure.
1088	* @param pVmxTransient The VMX-transient structure.
1089	* @param uProcCtls The Processor-based VM-execution controls to remove.
1090	*
1091	* @remarks When executing a nested-guest, this will not remove any of the specified
1092	* controls if the nested hypervisor has set any one of them.
1093	*/
1094	static void hmR0VmxRemoveProcCtlsVmcs(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, uint32_t uProcCtls)
1095	{
1096	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
1097	if (pVmcsInfo->u32ProcCtls & uProcCtls)
1098	{
1099	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1100	if ( !pVmxTransient->fIsNestedGuest
1101	\|\| !CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, uProcCtls))
1102	#else
1103	NOREF(pVCpu);
1104	if (!pVmxTransient->fIsNestedGuest)
1105	#endif
1106	{
1107	pVmcsInfo->u32ProcCtls &= ~uProcCtls;
1108	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
1109	AssertRC(rc);
1110	}
1111	}
1112	}
1113
1114
1115	/**
1116	* Sets the TSC offset for the current VMCS.
1117	*
1118	* @param uTscOffset The TSC offset to set.
1119	* @param pVmcsInfo The VMCS info. object.
1120	*/
1121	static void hmR0VmxSetTscOffsetVmcs(PVMXVMCSINFO pVmcsInfo, uint64_t uTscOffset)
1122	{
1123	if (pVmcsInfo->u64TscOffset != uTscOffset)
1124	{
1125	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_TSC_OFFSET_FULL, uTscOffset);
1126	AssertRC(rc);
1127	pVmcsInfo->u64TscOffset = uTscOffset;
1128	}
1129	}
1130
1131
1132	/**
1133	* Adds one or more exceptions to the exception bitmap and commits it to the current
1134	* VMCS.
1135	*
1136	* @param pVmxTransient The VMX-transient structure.
1137	* @param uXcptMask The exception(s) to add.
1138	*/
1139	static void hmR0VmxAddXcptInterceptMask(PCVMXTRANSIENT pVmxTransient, uint32_t uXcptMask)
1140	{
1141	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
1142	uint32_t uXcptBitmap = pVmcsInfo->u32XcptBitmap;
1143	if ((uXcptBitmap & uXcptMask) != uXcptMask)
1144	{
1145	uXcptBitmap \|= uXcptMask;
1146	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, uXcptBitmap);
1147	AssertRC(rc);
1148	pVmcsInfo->u32XcptBitmap = uXcptBitmap;
1149	}
1150	}
1151
1152
1153	/**
1154	* Adds an exception to the exception bitmap and commits it to the current VMCS.
1155	*
1156	* @param pVmxTransient The VMX-transient structure.
1157	* @param uXcpt The exception to add.
1158	*/
1159	static void hmR0VmxAddXcptIntercept(PCVMXTRANSIENT pVmxTransient, uint8_t uXcpt)
1160	{
1161	Assert(uXcpt <= X86_XCPT_LAST);
1162	hmR0VmxAddXcptInterceptMask(pVmxTransient, RT_BIT_32(uXcpt));
1163	}
1164
1165
1166	/**
1167	* Remove one or more exceptions from the exception bitmap and commits it to the
1168	* current VMCS.
1169	*
1170	* This takes care of not removing the exception intercept if a nested-guest
1171	* requires the exception to be intercepted.
1172	*
1173	* @returns VBox status code.
1174	* @param pVCpu The cross context virtual CPU structure.
1175	* @param pVmxTransient The VMX-transient structure.
1176	* @param uXcptMask The exception(s) to remove.
1177	*/
1178	static int hmR0VmxRemoveXcptInterceptMask(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, uint32_t uXcptMask)
1179	{
1180	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
1181	uint32_t u32XcptBitmap = pVmcsInfo->u32XcptBitmap;
1182	if (u32XcptBitmap & uXcptMask)
1183	{
1184	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1185	if (!pVmxTransient->fIsNestedGuest)
1186	{ /* likely */ }
1187	else
1188	{
1189	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
1190	uXcptMask &= ~pVmcsNstGst->u32XcptBitmap;
1191	}
1192	#endif
1193	#ifdef HMVMX_ALWAYS_TRAP_ALL_XCPTS
1194	uXcptMask &= ~( RT_BIT(X86_XCPT_BP)
1195	\| RT_BIT(X86_XCPT_DE)
1196	\| RT_BIT(X86_XCPT_NM)
1197	\| RT_BIT(X86_XCPT_TS)
1198	\| RT_BIT(X86_XCPT_UD)
1199	\| RT_BIT(X86_XCPT_NP)
1200	\| RT_BIT(X86_XCPT_SS)
1201	\| RT_BIT(X86_XCPT_GP)
1202	\| RT_BIT(X86_XCPT_PF)
1203	\| RT_BIT(X86_XCPT_MF));
1204	#elif defined(HMVMX_ALWAYS_TRAP_PF)
1205	uXcptMask &= ~RT_BIT(X86_XCPT_PF);
1206	#endif
1207	if (uXcptMask)
1208	{
1209	/* Validate we are not removing any essential exception intercepts. */
1210	Assert(pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging \|\| !(uXcptMask & RT_BIT(X86_XCPT_PF)));
1211	NOREF(pVCpu);
1212	Assert(!(uXcptMask & RT_BIT(X86_XCPT_DB)));
1213	Assert(!(uXcptMask & RT_BIT(X86_XCPT_AC)));
1214
1215	/* Remove it from the exception bitmap. */
1216	u32XcptBitmap &= ~uXcptMask;
1217
1218	/* Commit and update the cache if necessary. */
1219	if (pVmcsInfo->u32XcptBitmap != u32XcptBitmap)
1220	{
1221	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, u32XcptBitmap);
1222	AssertRC(rc);
1223	pVmcsInfo->u32XcptBitmap = u32XcptBitmap;
1224	}
1225	}
1226	}
1227	return VINF_SUCCESS;
1228	}
1229
1230
1231	/**
1232	* Remove an exceptions from the exception bitmap and commits it to the current
1233	* VMCS.
1234	*
1235	* @returns VBox status code.
1236	* @param pVCpu The cross context virtual CPU structure.
1237	* @param pVmxTransient The VMX-transient structure.
1238	* @param uXcpt The exception to remove.
1239	*/
1240	static int hmR0VmxRemoveXcptIntercept(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, uint8_t uXcpt)
1241	{
1242	return hmR0VmxRemoveXcptInterceptMask(pVCpu, pVmxTransient, RT_BIT(uXcpt));
1243	}
1244
1245
1246	/**
1247	* Loads the VMCS specified by the VMCS info. object.
1248	*
1249	* @returns VBox status code.
1250	* @param pVmcsInfo The VMCS info. object.
1251	*
1252	* @remarks Can be called with interrupts disabled.
1253	*/
1254	static int hmR0VmxLoadVmcs(PVMXVMCSINFO pVmcsInfo)
1255	{
1256	Assert(pVmcsInfo->HCPhysVmcs != 0 && pVmcsInfo->HCPhysVmcs != NIL_RTHCPHYS);
1257	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1258
1259	int rc = VMXLoadVmcs(pVmcsInfo->HCPhysVmcs);
1260	if (RT_SUCCESS(rc))
1261	pVmcsInfo->fVmcsState \|= VMX_V_VMCS_LAUNCH_STATE_CURRENT;
1262	return rc;
1263	}
1264
1265
1266	/**
1267	* Clears the VMCS specified by the VMCS info. object.
1268	*
1269	* @returns VBox status code.
1270	* @param pVmcsInfo The VMCS info. object.
1271	*
1272	* @remarks Can be called with interrupts disabled.
1273	*/
1274	static int hmR0VmxClearVmcs(PVMXVMCSINFO pVmcsInfo)
1275	{
1276	Assert(pVmcsInfo->HCPhysVmcs != 0 && pVmcsInfo->HCPhysVmcs != NIL_RTHCPHYS);
1277	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1278
1279	int rc = VMXClearVmcs(pVmcsInfo->HCPhysVmcs);
1280	if (RT_SUCCESS(rc))
1281	pVmcsInfo->fVmcsState = VMX_V_VMCS_LAUNCH_STATE_CLEAR;
1282	return rc;
1283	}
1284
1285
1286	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1287	/**
1288	* Loads the shadow VMCS specified by the VMCS info. object.
1289	*
1290	* @returns VBox status code.
1291	* @param pVmcsInfo The VMCS info. object.
1292	*
1293	* @remarks Can be called with interrupts disabled.
1294	*/
1295	static int hmR0VmxLoadShadowVmcs(PVMXVMCSINFO pVmcsInfo)
1296	{
1297	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1298	Assert(pVmcsInfo->HCPhysShadowVmcs != 0 && pVmcsInfo->HCPhysShadowVmcs != NIL_RTHCPHYS);
1299
1300	int rc = VMXLoadVmcs(pVmcsInfo->HCPhysShadowVmcs);
1301	if (RT_SUCCESS(rc))
1302	pVmcsInfo->fShadowVmcsState \|= VMX_V_VMCS_LAUNCH_STATE_CURRENT;
1303	return rc;
1304	}
1305
1306
1307	/**
1308	* Clears the shadow VMCS specified by the VMCS info. object.
1309	*
1310	* @returns VBox status code.
1311	* @param pVmcsInfo The VMCS info. object.
1312	*
1313	* @remarks Can be called with interrupts disabled.
1314	*/
1315	static int hmR0VmxClearShadowVmcs(PVMXVMCSINFO pVmcsInfo)
1316	{
1317	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1318	Assert(pVmcsInfo->HCPhysShadowVmcs != 0 && pVmcsInfo->HCPhysShadowVmcs != NIL_RTHCPHYS);
1319
1320	int rc = VMXClearVmcs(pVmcsInfo->HCPhysShadowVmcs);
1321	if (RT_SUCCESS(rc))
1322	pVmcsInfo->fShadowVmcsState = VMX_V_VMCS_LAUNCH_STATE_CLEAR;
1323	return rc;
1324	}
1325
1326
1327	/**
1328	* Switches from and to the specified VMCSes.
1329	*
1330	* @returns VBox status code.
1331	* @param pVmcsInfoFrom The VMCS info. object we are switching from.
1332	* @param pVmcsInfoTo The VMCS info. object we are switching to.
1333	*
1334	* @remarks Called with interrupts disabled.
1335	*/
1336	static int hmR0VmxSwitchVmcs(PVMXVMCSINFO pVmcsInfoFrom, PVMXVMCSINFO pVmcsInfoTo)
1337	{
1338	/*
1339	* Clear the VMCS we are switching out if it has not already been cleared.
1340	* This will sync any CPU internal data back to the VMCS.
1341	*/
1342	if (pVmcsInfoFrom->fVmcsState != VMX_V_VMCS_LAUNCH_STATE_CLEAR)
1343	{
1344	int rc = hmR0VmxClearVmcs(pVmcsInfoFrom);
1345	if (RT_SUCCESS(rc))
1346	{
1347	/*
1348	* The shadow VMCS, if any, would not be active at this point since we
1349	* would have cleared it while importing the virtual hardware-virtualization
1350	* state as part the VMLAUNCH/VMRESUME VM-exit. Hence, there's no need to
1351	* clear the shadow VMCS here, just assert for safety.
1352	*/
1353	Assert(!pVmcsInfoFrom->pvShadowVmcs \|\| pVmcsInfoFrom->fShadowVmcsState == VMX_V_VMCS_LAUNCH_STATE_CLEAR);
1354	}
1355	else
1356	return rc;
1357	}
1358
1359	/*
1360	* Clear the VMCS we are switching to if it has not already been cleared.
1361	* This will initialize the VMCS launch state to "clear" required for loading it.
1362	*
1363	* See Intel spec. 31.6 "Preparation And Launching A Virtual Machine".
1364	*/
1365	if (pVmcsInfoTo->fVmcsState != VMX_V_VMCS_LAUNCH_STATE_CLEAR)
1366	{
1367	int rc = hmR0VmxClearVmcs(pVmcsInfoTo);
1368	if (RT_SUCCESS(rc))
1369	{ /* likely */ }
1370	else
1371	return rc;
1372	}
1373
1374	/*
1375	* Finally, load the VMCS we are switching to.
1376	*/
1377	return hmR0VmxLoadVmcs(pVmcsInfoTo);
1378	}
1379
1380
1381	/**
1382	* Switches between the guest VMCS and the nested-guest VMCS as specified by the
1383	* caller.
1384	*
1385	* @returns VBox status code.
1386	* @param pVCpu The cross context virtual CPU structure.
1387	* @param fSwitchToNstGstVmcs Whether to switch to the nested-guest VMCS (pass
1388	* true) or guest VMCS (pass false).
1389	*/
1390	static int hmR0VmxSwitchToGstOrNstGstVmcs(PVMCPUCC pVCpu, bool fSwitchToNstGstVmcs)
1391	{
1392	/* Ensure we have synced everything from the guest-CPU context to the VMCS before switching. */
1393	HMVMX_CPUMCTX_ASSERT(pVCpu, HMVMX_CPUMCTX_EXTRN_ALL);
1394
1395	PVMXVMCSINFO pVmcsInfoFrom;
1396	PVMXVMCSINFO pVmcsInfoTo;
1397	if (fSwitchToNstGstVmcs)
1398	{
1399	pVmcsInfoFrom = &pVCpu->hmr0.s.vmx.VmcsInfo;
1400	pVmcsInfoTo = &pVCpu->hmr0.s.vmx.VmcsInfoNstGst;
1401	}
1402	else
1403	{
1404	pVmcsInfoFrom = &pVCpu->hmr0.s.vmx.VmcsInfoNstGst;
1405	pVmcsInfoTo = &pVCpu->hmr0.s.vmx.VmcsInfo;
1406	}
1407
1408	/*
1409	* Disable interrupts to prevent being preempted while we switch the current VMCS as the
1410	* preemption hook code path acquires the current VMCS.
1411	*/
1412	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
1413
1414	int rc = hmR0VmxSwitchVmcs(pVmcsInfoFrom, pVmcsInfoTo);
1415	if (RT_SUCCESS(rc))
1416	{
1417	pVCpu->hmr0.s.vmx.fSwitchedToNstGstVmcs = fSwitchToNstGstVmcs;
1418	pVCpu->hm.s.vmx.fSwitchedToNstGstVmcsCopyForRing3 = fSwitchToNstGstVmcs;
1419
1420	/*
1421	* If we are switching to a VMCS that was executed on a different host CPU or was
1422	* never executed before, flag that we need to export the host state before executing
1423	* guest/nested-guest code using hardware-assisted VMX.
1424	*
1425	* This could probably be done in a preemptible context since the preemption hook
1426	* will flag the necessary change in host context. However, since preemption is
1427	* already disabled and to avoid making assumptions about host specific code in
1428	* RTMpCpuId when called with preemption enabled, we'll do this while preemption is
1429	* disabled.
1430	*/
1431	if (pVmcsInfoTo->idHostCpuState == RTMpCpuId())
1432	{ /* likely */ }
1433	else
1434	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE);
1435
1436	ASMSetFlags(fEFlags);
1437
1438	/*
1439	* We use a different VM-exit MSR-store areas for the guest and nested-guest. Hence,
1440	* flag that we need to update the host MSR values there. Even if we decide in the
1441	* future to share the VM-exit MSR-store area page between the guest and nested-guest,
1442	* if its content differs, we would have to update the host MSRs anyway.
1443	*/
1444	pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs = false;
1445	}
1446	else
1447	ASMSetFlags(fEFlags);
1448	return rc;
1449	}
1450	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
1451
1452
1453	/**
1454	* Updates the VM's last error record.
1455	*
1456	* If there was a VMX instruction error, reads the error data from the VMCS and
1457	* updates VCPU's last error record as well.
1458	*
1459	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1460	* Can be NULL if @a rc is not VERR_VMX_UNABLE_TO_START_VM or
1461	* VERR_VMX_INVALID_VMCS_FIELD.
1462	* @param rc The error code.
1463	*/
1464	static void hmR0VmxUpdateErrorRecord(PVMCPUCC pVCpu, int rc)
1465	{
1466	if ( rc == VERR_VMX_INVALID_VMCS_FIELD
1467	\|\| rc == VERR_VMX_UNABLE_TO_START_VM)
1468	{
1469	AssertPtrReturnVoid(pVCpu);
1470	VMXReadVmcs32(VMX_VMCS32_RO_VM_INSTR_ERROR, &pVCpu->hm.s.vmx.LastError.u32InstrError);
1471	}
1472	pVCpu->CTX_SUFF(pVM)->hm.s.ForR3.rcInit = rc;
1473	}
1474
1475
1476	#ifdef VBOX_STRICT
1477	/**
1478	* Reads the VM-entry interruption-information field from the VMCS into the VMX
1479	* transient structure.
1480	*
1481	* @param pVmxTransient The VMX-transient structure.
1482	*/
1483	DECLINLINE(void) hmR0VmxReadEntryIntInfoVmcs(PVMXTRANSIENT pVmxTransient)
1484	{
1485	int rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, &pVmxTransient->uEntryIntInfo);
1486	AssertRC(rc);
1487	}
1488
1489
1490	/**
1491	* Reads the VM-entry exception error code field from the VMCS into
1492	* the VMX transient structure.
1493	*
1494	* @param pVmxTransient The VMX-transient structure.
1495	*/
1496	DECLINLINE(void) hmR0VmxReadEntryXcptErrorCodeVmcs(PVMXTRANSIENT pVmxTransient)
1497	{
1498	int rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY_EXCEPTION_ERRCODE, &pVmxTransient->uEntryXcptErrorCode);
1499	AssertRC(rc);
1500	}
1501
1502
1503	/**
1504	* Reads the VM-entry exception error code field from the VMCS into
1505	* the VMX transient structure.
1506	*
1507	* @param pVmxTransient The VMX-transient structure.
1508	*/
1509	DECLINLINE(void) hmR0VmxReadEntryInstrLenVmcs(PVMXTRANSIENT pVmxTransient)
1510	{
1511	int rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY_INSTR_LENGTH, &pVmxTransient->cbEntryInstr);
1512	AssertRC(rc);
1513	}
1514	#endif /* VBOX_STRICT */
1515
1516
1517	/**
1518	* Reads the VM-exit interruption-information field from the VMCS into the VMX
1519	* transient structure.
1520	*
1521	* @param pVmxTransient The VMX-transient structure.
1522	*/
1523	DECLINLINE(void) hmR0VmxReadExitIntInfoVmcs(PVMXTRANSIENT pVmxTransient)
1524	{
1525	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_EXIT_INTERRUPTION_INFO))
1526	{
1527	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INTERRUPTION_INFO, &pVmxTransient->uExitIntInfo);
1528	AssertRC(rc);
1529	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_EXIT_INTERRUPTION_INFO;
1530	}
1531	}
1532
1533
1534	/**
1535	* Reads the VM-exit interruption error code from the VMCS into the VMX
1536	* transient structure.
1537	*
1538	* @param pVmxTransient The VMX-transient structure.
1539	*/
1540	DECLINLINE(void) hmR0VmxReadExitIntErrorCodeVmcs(PVMXTRANSIENT pVmxTransient)
1541	{
1542	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_EXIT_INTERRUPTION_ERROR_CODE))
1543	{
1544	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INTERRUPTION_ERROR_CODE, &pVmxTransient->uExitIntErrorCode);
1545	AssertRC(rc);
1546	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_EXIT_INTERRUPTION_ERROR_CODE;
1547	}
1548	}
1549
1550
1551	/**
1552	* Reads the VM-exit instruction length field from the VMCS into the VMX
1553	* transient structure.
1554	*
1555	* @param pVmxTransient The VMX-transient structure.
1556	*/
1557	DECLINLINE(void) hmR0VmxReadExitInstrLenVmcs(PVMXTRANSIENT pVmxTransient)
1558	{
1559	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_EXIT_INSTR_LEN))
1560	{
1561	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INSTR_LENGTH, &pVmxTransient->cbExitInstr);
1562	AssertRC(rc);
1563	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_EXIT_INSTR_LEN;
1564	}
1565	}
1566
1567
1568	/**
1569	* Reads the VM-exit instruction-information field from the VMCS into
1570	* the VMX transient structure.
1571	*
1572	* @param pVmxTransient The VMX-transient structure.
1573	*/
1574	DECLINLINE(void) hmR0VmxReadExitInstrInfoVmcs(PVMXTRANSIENT pVmxTransient)
1575	{
1576	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_EXIT_INSTR_INFO))
1577	{
1578	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INSTR_INFO, &pVmxTransient->ExitInstrInfo.u);
1579	AssertRC(rc);
1580	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_EXIT_INSTR_INFO;
1581	}
1582	}
1583
1584
1585	/**
1586	* Reads the Exit Qualification from the VMCS into the VMX transient structure.
1587	*
1588	* @param pVmxTransient The VMX-transient structure.
1589	*/
1590	DECLINLINE(void) hmR0VmxReadExitQualVmcs(PVMXTRANSIENT pVmxTransient)
1591	{
1592	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_EXIT_QUALIFICATION))
1593	{
1594	int rc = VMXReadVmcsNw(VMX_VMCS_RO_EXIT_QUALIFICATION, &pVmxTransient->uExitQual);
1595	AssertRC(rc);
1596	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_EXIT_QUALIFICATION;
1597	}
1598	}
1599
1600
1601	/**
1602	* Reads the Guest-linear address from the VMCS into the VMX transient structure.
1603	*
1604	* @param pVmxTransient The VMX-transient structure.
1605	*/
1606	DECLINLINE(void) hmR0VmxReadGuestLinearAddrVmcs(PVMXTRANSIENT pVmxTransient)
1607	{
1608	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_GUEST_LINEAR_ADDR))
1609	{
1610	int rc = VMXReadVmcsNw(VMX_VMCS_RO_GUEST_LINEAR_ADDR, &pVmxTransient->uGuestLinearAddr);
1611	AssertRC(rc);
1612	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_GUEST_LINEAR_ADDR;
1613	}
1614	}
1615
1616
1617	/**
1618	* Reads the Guest-physical address from the VMCS into the VMX transient structure.
1619	*
1620	* @param pVmxTransient The VMX-transient structure.
1621	*/
1622	DECLINLINE(void) hmR0VmxReadGuestPhysicalAddrVmcs(PVMXTRANSIENT pVmxTransient)
1623	{
1624	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_GUEST_PHYSICAL_ADDR))
1625	{
1626	int rc = VMXReadVmcs64(VMX_VMCS64_RO_GUEST_PHYS_ADDR_FULL, &pVmxTransient->uGuestPhysicalAddr);
1627	AssertRC(rc);
1628	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_GUEST_PHYSICAL_ADDR;
1629	}
1630	}
1631
1632	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1633	/**
1634	* Reads the Guest pending-debug exceptions from the VMCS into the VMX transient
1635	* structure.
1636	*
1637	* @param pVmxTransient The VMX-transient structure.
1638	*/
1639	DECLINLINE(void) hmR0VmxReadGuestPendingDbgXctps(PVMXTRANSIENT pVmxTransient)
1640	{
1641	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_GUEST_PENDING_DBG_XCPTS))
1642	{
1643	int rc = VMXReadVmcsNw(VMX_VMCS_GUEST_PENDING_DEBUG_XCPTS, &pVmxTransient->uGuestPendingDbgXcpts);
1644	AssertRC(rc);
1645	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_GUEST_PENDING_DBG_XCPTS;
1646	}
1647	}
1648	#endif
1649
1650	/**
1651	* Reads the IDT-vectoring information field from the VMCS into the VMX
1652	* transient structure.
1653	*
1654	* @param pVmxTransient The VMX-transient structure.
1655	*
1656	* @remarks No-long-jump zone!!!
1657	*/
1658	DECLINLINE(void) hmR0VmxReadIdtVectoringInfoVmcs(PVMXTRANSIENT pVmxTransient)
1659	{
1660	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_IDT_VECTORING_INFO))
1661	{
1662	int rc = VMXReadVmcs32(VMX_VMCS32_RO_IDT_VECTORING_INFO, &pVmxTransient->uIdtVectoringInfo);
1663	AssertRC(rc);
1664	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_IDT_VECTORING_INFO;
1665	}
1666	}
1667
1668
1669	/**
1670	* Reads the IDT-vectoring error code from the VMCS into the VMX
1671	* transient structure.
1672	*
1673	* @param pVmxTransient The VMX-transient structure.
1674	*/
1675	DECLINLINE(void) hmR0VmxReadIdtVectoringErrorCodeVmcs(PVMXTRANSIENT pVmxTransient)
1676	{
1677	if (!(pVmxTransient->fVmcsFieldsRead & HMVMX_READ_IDT_VECTORING_ERROR_CODE))
1678	{
1679	int rc = VMXReadVmcs32(VMX_VMCS32_RO_IDT_VECTORING_ERROR_CODE, &pVmxTransient->uIdtVectoringErrorCode);
1680	AssertRC(rc);
1681	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_IDT_VECTORING_ERROR_CODE;
1682	}
1683	}
1684
1685	#ifdef HMVMX_ALWAYS_SAVE_RO_GUEST_STATE
1686	/**
1687	* Reads all relevant read-only VMCS fields into the VMX transient structure.
1688	*
1689	* @param pVmxTransient The VMX-transient structure.
1690	*/
1691	static void hmR0VmxReadAllRoFieldsVmcs(PVMXTRANSIENT pVmxTransient)
1692	{
1693	int rc = VMXReadVmcsNw(VMX_VMCS_RO_EXIT_QUALIFICATION, &pVmxTransient->uExitQual);
1694	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INSTR_LENGTH, &pVmxTransient->cbExitInstr);
1695	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INSTR_INFO, &pVmxTransient->ExitInstrInfo.u);
1696	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_IDT_VECTORING_INFO, &pVmxTransient->uIdtVectoringInfo);
1697	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_IDT_VECTORING_ERROR_CODE, &pVmxTransient->uIdtVectoringErrorCode);
1698	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INTERRUPTION_INFO, &pVmxTransient->uExitIntInfo);
1699	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_EXIT_INTERRUPTION_ERROR_CODE, &pVmxTransient->uExitIntErrorCode);
1700	rc \|= VMXReadVmcsNw(VMX_VMCS_RO_GUEST_LINEAR_ADDR, &pVmxTransient->uGuestLinearAddr);
1701	rc \|= VMXReadVmcs64(VMX_VMCS64_RO_GUEST_PHYS_ADDR_FULL, &pVmxTransient->uGuestPhysicalAddr);
1702	AssertRC(rc);
1703	pVmxTransient->fVmcsFieldsRead \|= HMVMX_READ_EXIT_QUALIFICATION
1704	\| HMVMX_READ_EXIT_INSTR_LEN
1705	\| HMVMX_READ_EXIT_INSTR_INFO
1706	\| HMVMX_READ_IDT_VECTORING_INFO
1707	\| HMVMX_READ_IDT_VECTORING_ERROR_CODE
1708	\| HMVMX_READ_EXIT_INTERRUPTION_INFO
1709	\| HMVMX_READ_EXIT_INTERRUPTION_ERROR_CODE
1710	\| HMVMX_READ_GUEST_LINEAR_ADDR
1711	\| HMVMX_READ_GUEST_PHYSICAL_ADDR;
1712	}
1713	#endif
1714
1715	/**
1716	* Enters VMX root mode operation on the current CPU.
1717	*
1718	* @returns VBox status code.
1719	* @param pHostCpu The HM physical-CPU structure.
1720	* @param pVM The cross context VM structure. Can be
1721	* NULL, after a resume.
1722	* @param HCPhysCpuPage Physical address of the VMXON region.
1723	* @param pvCpuPage Pointer to the VMXON region.
1724	*/
1725	static int hmR0VmxEnterRootMode(PHMPHYSCPU pHostCpu, PVMCC pVM, RTHCPHYS HCPhysCpuPage, void *pvCpuPage)
1726	{
1727	Assert(pHostCpu);
1728	Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
1729	Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
1730	Assert(pvCpuPage);
1731	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1732
1733	if (pVM)
1734	{
1735	/* Write the VMCS revision identifier to the VMXON region. */
1736	(uint32_t )pvCpuPage = RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_ID);
1737	}
1738
1739	/* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with CR4. */
1740	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
1741
1742	/* Enable the VMX bit in CR4 if necessary. */
1743	RTCCUINTREG const uOldCr4 = SUPR0ChangeCR4(X86_CR4_VMXE, RTCCUINTREG_MAX);
1744
1745	/* Record whether VMXE was already prior to us enabling it above. */
1746	pHostCpu->fVmxeAlreadyEnabled = RT_BOOL(uOldCr4 & X86_CR4_VMXE);
1747
1748	/* Enter VMX root mode. */
1749	int rc = VMXEnable(HCPhysCpuPage);
1750	if (RT_FAILURE(rc))
1751	{
1752	/* Restore CR4.VMXE if it was not set prior to our attempt to set it above. */
1753	if (!pHostCpu->fVmxeAlreadyEnabled)
1754	SUPR0ChangeCR4(0 /* fOrMask */, ~(uint64_t)X86_CR4_VMXE);
1755
1756	if (pVM)
1757	pVM->hm.s.ForR3.vmx.HCPhysVmxEnableError = HCPhysCpuPage;
1758	}
1759
1760	/* Restore interrupts. */
1761	ASMSetFlags(fEFlags);
1762	return rc;
1763	}
1764
1765
1766	/**
1767	* Exits VMX root mode operation on the current CPU.
1768	*
1769	* @returns VBox status code.
1770	* @param pHostCpu The HM physical-CPU structure.
1771	*/
1772	static int hmR0VmxLeaveRootMode(PHMPHYSCPU pHostCpu)
1773	{
1774	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1775
1776	/* Paranoid: Disable interrupts as, in theory, interrupts handlers might mess with CR4. */
1777	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
1778
1779	/* If we're for some reason not in VMX root mode, then don't leave it. */
1780	RTCCUINTREG const uHostCr4 = ASMGetCR4();
1781
1782	int rc;
1783	if (uHostCr4 & X86_CR4_VMXE)
1784	{
1785	/* Exit VMX root mode and clear the VMX bit in CR4. */
1786	VMXDisable();
1787
1788	/* Clear CR4.VMXE only if it was clear prior to use setting it. */
1789	if (!pHostCpu->fVmxeAlreadyEnabled)
1790	SUPR0ChangeCR4(0 /* fOrMask */, ~(uint64_t)X86_CR4_VMXE);
1791
1792	rc = VINF_SUCCESS;
1793	}
1794	else
1795	rc = VERR_VMX_NOT_IN_VMX_ROOT_MODE;
1796
1797	/* Restore interrupts. */
1798	ASMSetFlags(fEFlags);
1799	return rc;
1800	}
1801
1802
1803	/**
1804	* Allocates pages specified as specified by an array of VMX page allocation info
1805	* objects.
1806	*
1807	* The pages contents are zero'd after allocation.
1808	*
1809	* @returns VBox status code.
1810	* @param phMemObj Where to return the handle to the allocation.
1811	* @param paAllocInfo The pointer to the first element of the VMX
1812	* page-allocation info object array.
1813	* @param cEntries The number of elements in the @a paAllocInfo array.
1814	*/
1815	static int hmR0VmxPagesAllocZ(PRTR0MEMOBJ phMemObj, PVMXPAGEALLOCINFO paAllocInfo, uint32_t cEntries)
1816	{
1817	*phMemObj = NIL_RTR0MEMOBJ;
1818
1819	/* Figure out how many pages to allocate. */
1820	uint32_t cPages = 0;
1821	for (uint32_t iPage = 0; iPage < cEntries; iPage++)
1822	cPages += !!paAllocInfo[iPage].fValid;
1823
1824	/* Allocate the pages. */
1825	if (cPages)
1826	{
1827	size_t const cbPages = cPages << PAGE_SHIFT;
1828	int rc = RTR0MemObjAllocPage(phMemObj, cbPages, false /* fExecutable */);
1829	if (RT_FAILURE(rc))
1830	return rc;
1831
1832	/* Zero the contents and assign each page to the corresponding VMX page-allocation entry. */
1833	void pvFirstPage = RTR0MemObjAddress(phMemObj);
1834	RT_BZERO(pvFirstPage, cbPages);
1835
1836	uint32_t iPage = 0;
1837	for (uint32_t i = 0; i < cEntries; i++)
1838	if (paAllocInfo[i].fValid)
1839	{
1840	RTHCPHYS const HCPhysPage = RTR0MemObjGetPagePhysAddr(*phMemObj, iPage);
1841	void pvPage = (void )((uintptr_t)pvFirstPage + (iPage << X86_PAGE_4K_SHIFT));
1842	Assert(HCPhysPage && HCPhysPage != NIL_RTHCPHYS);
1843	AssertPtr(pvPage);
1844
1845	Assert(paAllocInfo[iPage].pHCPhys);
1846	Assert(paAllocInfo[iPage].ppVirt);
1847	*paAllocInfo[iPage].pHCPhys = HCPhysPage;
1848	*paAllocInfo[iPage].ppVirt = pvPage;
1849
1850	/* Move to next page. */
1851	++iPage;
1852	}
1853
1854	/* Make sure all valid (requested) pages have been assigned. */
1855	Assert(iPage == cPages);
1856	}
1857	return VINF_SUCCESS;
1858	}
1859
1860
1861	/**
1862	* Frees pages allocated using hmR0VmxPagesAllocZ.
1863	*
1864	* @param phMemObj Pointer to the memory object handle. Will be set to
1865	* NIL.
1866	*/
1867	DECL_FORCE_INLINE(void) hmR0VmxPagesFree(PRTR0MEMOBJ phMemObj)
1868	{
1869	/* We can cleanup wholesale since it's all one allocation. */
1870	if (*phMemObj != NIL_RTR0MEMOBJ)
1871	{
1872	RTR0MemObjFree(phMemObj, true / fFreeMappings */);
1873	*phMemObj = NIL_RTR0MEMOBJ;
1874	}
1875	}
1876
1877
1878	/**
1879	* Initializes a VMCS info. object.
1880	*
1881	* @param pVmcsInfo The VMCS info. object.
1882	* @param pVmcsInfoShared The VMCS info. object shared with ring-3.
1883	*/
1884	static void hmR0VmxVmcsInfoInit(PVMXVMCSINFO pVmcsInfo, PVMXVMCSINFOSHARED pVmcsInfoShared)
1885	{
1886	RT_ZERO(*pVmcsInfo);
1887	RT_ZERO(*pVmcsInfoShared);
1888
1889	pVmcsInfo->pShared = pVmcsInfoShared;
1890	Assert(pVmcsInfo->hMemObj == NIL_RTR0MEMOBJ);
1891	pVmcsInfo->HCPhysVmcs = NIL_RTHCPHYS;
1892	pVmcsInfo->HCPhysShadowVmcs = NIL_RTHCPHYS;
1893	pVmcsInfo->HCPhysMsrBitmap = NIL_RTHCPHYS;
1894	pVmcsInfo->HCPhysGuestMsrLoad = NIL_RTHCPHYS;
1895	pVmcsInfo->HCPhysGuestMsrStore = NIL_RTHCPHYS;
1896	pVmcsInfo->HCPhysHostMsrLoad = NIL_RTHCPHYS;
1897	pVmcsInfo->HCPhysVirtApic = NIL_RTHCPHYS;
1898	pVmcsInfo->HCPhysEPTP = NIL_RTHCPHYS;
1899	pVmcsInfo->u64VmcsLinkPtr = NIL_RTHCPHYS;
1900	pVmcsInfo->idHostCpuState = NIL_RTCPUID;
1901	pVmcsInfo->idHostCpuExec = NIL_RTCPUID;
1902	}
1903
1904
1905	/**
1906	* Frees the VT-x structures for a VMCS info. object.
1907	*
1908	* @param pVmcsInfo The VMCS info. object.
1909	* @param pVmcsInfoShared The VMCS info. object shared with ring-3.
1910	*/
1911	static void hmR0VmxVmcsInfoFree(PVMXVMCSINFO pVmcsInfo, PVMXVMCSINFOSHARED pVmcsInfoShared)
1912	{
1913	hmR0VmxPagesFree(&pVmcsInfo->hMemObj);
1914	hmR0VmxVmcsInfoInit(pVmcsInfo, pVmcsInfoShared);
1915	}
1916
1917
1918	/**
1919	* Allocates the VT-x structures for a VMCS info. object.
1920	*
1921	* @returns VBox status code.
1922	* @param pVCpu The cross context virtual CPU structure.
1923	* @param pVmcsInfo The VMCS info. object.
1924	* @param fIsNstGstVmcs Whether this is a nested-guest VMCS.
1925	*
1926	* @remarks The caller is expected to take care of any and all allocation failures.
1927	* This function will not perform any cleanup for failures half-way
1928	* through.
1929	*/
1930	static int hmR0VmxAllocVmcsInfo(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, bool fIsNstGstVmcs)
1931	{
1932	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
1933
1934	bool const fMsrBitmaps = RT_BOOL(g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_MSR_BITMAPS);
1935	bool const fShadowVmcs = !fIsNstGstVmcs ? pVM->hmr0.s.vmx.fUseVmcsShadowing : pVM->cpum.ro.GuestFeatures.fVmxVmcsShadowing;
1936	Assert(!pVM->cpum.ro.GuestFeatures.fVmxVmcsShadowing); /* VMCS shadowing is not yet exposed to the guest. */
1937	VMXPAGEALLOCINFO aAllocInfo[] =
1938	{
1939	{ true, 0 /* Unused */, &pVmcsInfo->HCPhysVmcs, &pVmcsInfo->pvVmcs },
1940	{ true, 0 /* Unused */, &pVmcsInfo->HCPhysGuestMsrLoad, &pVmcsInfo->pvGuestMsrLoad },
1941	{ true, 0 /* Unused */, &pVmcsInfo->HCPhysHostMsrLoad, &pVmcsInfo->pvHostMsrLoad },
1942	{ fMsrBitmaps, 0 /* Unused */, &pVmcsInfo->HCPhysMsrBitmap, &pVmcsInfo->pvMsrBitmap },
1943	{ fShadowVmcs, 0 /* Unused */, &pVmcsInfo->HCPhysShadowVmcs, &pVmcsInfo->pvShadowVmcs },
1944	};
1945
1946	int rc = hmR0VmxPagesAllocZ(&pVmcsInfo->hMemObj, &aAllocInfo[0], RT_ELEMENTS(aAllocInfo));
1947	if (RT_FAILURE(rc))
1948	return rc;
1949
1950	/*
1951	* We use the same page for VM-entry MSR-load and VM-exit MSR store areas.
1952	* Because they contain a symmetric list of guest MSRs to load on VM-entry and store on VM-exit.
1953	*/
1954	AssertCompile(RT_ELEMENTS(aAllocInfo) > 0);
1955	Assert(pVmcsInfo->HCPhysGuestMsrLoad != NIL_RTHCPHYS);
1956	pVmcsInfo->pvGuestMsrStore = pVmcsInfo->pvGuestMsrLoad;
1957	pVmcsInfo->HCPhysGuestMsrStore = pVmcsInfo->HCPhysGuestMsrLoad;
1958
1959	/*
1960	* Get the virtual-APIC page rather than allocating them again.
1961	*/
1962	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_TPR_SHADOW)
1963	{
1964	if (!fIsNstGstVmcs)
1965	{
1966	if (PDMHasApic(pVM))
1967	{
1968	rc = APICGetApicPageForCpu(pVCpu, &pVmcsInfo->HCPhysVirtApic, (PRTR0PTR)&pVmcsInfo->pbVirtApic, NULL /pR3Ptr/);
1969	if (RT_FAILURE(rc))
1970	return rc;
1971	Assert(pVmcsInfo->pbVirtApic);
1972	Assert(pVmcsInfo->HCPhysVirtApic && pVmcsInfo->HCPhysVirtApic != NIL_RTHCPHYS);
1973	}
1974	}
1975	else
1976	{
1977	pVmcsInfo->pbVirtApic = (uint8_t *)CPUMGetGuestVmxVirtApicPage(&pVCpu->cpum.GstCtx, &pVmcsInfo->HCPhysVirtApic);
1978	Assert(pVmcsInfo->pbVirtApic);
1979	Assert(pVmcsInfo->HCPhysVirtApic && pVmcsInfo->HCPhysVirtApic != NIL_RTHCPHYS);
1980	}
1981	}
1982
1983	return VINF_SUCCESS;
1984	}
1985
1986
1987	/**
1988	* Free all VT-x structures for the VM.
1989	*
1990	* @returns IPRT status code.
1991	* @param pVM The cross context VM structure.
1992	*/
1993	static void hmR0VmxStructsFree(PVMCC pVM)
1994	{
1995	hmR0VmxPagesFree(&pVM->hmr0.s.vmx.hMemObj);
1996	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1997	if (pVM->hmr0.s.vmx.fUseVmcsShadowing)
1998	{
1999	RTMemFree(pVM->hmr0.s.vmx.paShadowVmcsFields);
2000	pVM->hmr0.s.vmx.paShadowVmcsFields = NULL;
2001	RTMemFree(pVM->hmr0.s.vmx.paShadowVmcsRoFields);
2002	pVM->hmr0.s.vmx.paShadowVmcsRoFields = NULL;
2003	}
2004	#endif
2005
2006	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
2007	{
2008	PVMCPUCC pVCpu = VMCC_GET_CPU(pVM, idCpu);
2009	hmR0VmxVmcsInfoFree(&pVCpu->hmr0.s.vmx.VmcsInfo, &pVCpu->hm.s.vmx.VmcsInfo);
2010	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
2011	if (pVM->cpum.ro.GuestFeatures.fVmx)
2012	hmR0VmxVmcsInfoFree(&pVCpu->hmr0.s.vmx.VmcsInfoNstGst, &pVCpu->hm.s.vmx.VmcsInfoNstGst);
2013	#endif
2014	}
2015	}
2016
2017
2018	/**
2019	* Allocate all VT-x structures for the VM.
2020	*
2021	* @returns IPRT status code.
2022	* @param pVM The cross context VM structure.
2023	*
2024	* @remarks This functions will cleanup on memory allocation failures.
2025	*/
2026	static int hmR0VmxStructsAlloc(PVMCC pVM)
2027	{
2028	/*
2029	* Sanity check the VMCS size reported by the CPU as we assume 4KB allocations.
2030	* The VMCS size cannot be more than 4096 bytes.
2031	*
2032	* See Intel spec. Appendix A.1 "Basic VMX Information".
2033	*/
2034	uint32_t const cbVmcs = RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_SIZE);
2035	if (cbVmcs <= X86_PAGE_4K_SIZE)
2036	{ /* likely */ }
2037	else
2038	{
2039	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_INVALID_VMCS_SIZE;
2040	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
2041	}
2042
2043	/*
2044	* Allocate per-VM VT-x structures.
2045	*/
2046	bool const fVirtApicAccess = RT_BOOL(g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS);
2047	bool const fUseVmcsShadowing = pVM->hmr0.s.vmx.fUseVmcsShadowing;
2048	VMXPAGEALLOCINFO aAllocInfo[] =
2049	{
2050	{ fVirtApicAccess, 0 /* Unused */, &pVM->hmr0.s.vmx.HCPhysApicAccess, (PRTR0PTR)&pVM->hmr0.s.vmx.pbApicAccess },
2051	{ fUseVmcsShadowing, 0 /* Unused */, &pVM->hmr0.s.vmx.HCPhysVmreadBitmap, &pVM->hmr0.s.vmx.pvVmreadBitmap },
2052	{ fUseVmcsShadowing, 0 /* Unused */, &pVM->hmr0.s.vmx.HCPhysVmwriteBitmap, &pVM->hmr0.s.vmx.pvVmwriteBitmap },
2053	#ifdef VBOX_WITH_CRASHDUMP_MAGIC
2054	{ true, 0 /* Unused */, &pVM->hmr0.s.vmx.HCPhysScratch, (PRTR0PTR)&pVM->hmr0.s.vmx.pbScratch },
2055	#endif
2056	};
2057
2058	int rc = hmR0VmxPagesAllocZ(&pVM->hmr0.s.vmx.hMemObj, &aAllocInfo[0], RT_ELEMENTS(aAllocInfo));
2059	if (RT_SUCCESS(rc))
2060	{
2061	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
2062	/* Allocate the shadow VMCS-fields array. */
2063	if (fUseVmcsShadowing)
2064	{
2065	Assert(!pVM->hmr0.s.vmx.cShadowVmcsFields);
2066	Assert(!pVM->hmr0.s.vmx.cShadowVmcsRoFields);
2067	pVM->hmr0.s.vmx.paShadowVmcsFields = (uint32_t *)RTMemAllocZ(sizeof(g_aVmcsFields));
2068	pVM->hmr0.s.vmx.paShadowVmcsRoFields = (uint32_t *)RTMemAllocZ(sizeof(g_aVmcsFields));
2069	if (!pVM->hmr0.s.vmx.paShadowVmcsFields \|\| !pVM->hmr0.s.vmx.paShadowVmcsRoFields)
2070	rc = VERR_NO_MEMORY;
2071	}
2072	#endif
2073
2074	/*
2075	* Allocate per-VCPU VT-x structures.
2076	*/
2077	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus && RT_SUCCESS(rc); idCpu++)
2078	{
2079	/* Allocate the guest VMCS structures. */
2080	PVMCPUCC pVCpu = VMCC_GET_CPU(pVM, idCpu);
2081	rc = hmR0VmxAllocVmcsInfo(pVCpu, &pVCpu->hmr0.s.vmx.VmcsInfo, false /* fIsNstGstVmcs */);
2082
2083	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
2084	/* Allocate the nested-guest VMCS structures, when the VMX feature is exposed to the guest. */
2085	if (pVM->cpum.ro.GuestFeatures.fVmx && RT_SUCCESS(rc))
2086	rc = hmR0VmxAllocVmcsInfo(pVCpu, &pVCpu->hmr0.s.vmx.VmcsInfoNstGst, true /* fIsNstGstVmcs */);
2087	#endif
2088	}
2089	if (RT_SUCCESS(rc))
2090	return VINF_SUCCESS;
2091	}
2092	hmR0VmxStructsFree(pVM);
2093	return rc;
2094	}
2095
2096
2097	/**
2098	* Pre-initializes non-zero fields in VMX structures that will be allocated.
2099	*
2100	* @param pVM The cross context VM structure.
2101	*/
2102	static void hmR0VmxStructsInit(PVMCC pVM)
2103	{
2104	/* Paranoia. */
2105	Assert(pVM->hmr0.s.vmx.pbApicAccess == NULL);
2106	#ifdef VBOX_WITH_CRASHDUMP_MAGIC
2107	Assert(pVM->hmr0.s.vmx.pbScratch == NULL);
2108	#endif
2109
2110	/*
2111	* Initialize members up-front so we can cleanup en masse on allocation failures.
2112	*/
2113	#ifdef VBOX_WITH_CRASHDUMP_MAGIC
2114	pVM->hmr0.s.vmx.HCPhysScratch = NIL_RTHCPHYS;
2115	#endif
2116	pVM->hmr0.s.vmx.HCPhysApicAccess = NIL_RTHCPHYS;
2117	pVM->hmr0.s.vmx.HCPhysVmreadBitmap = NIL_RTHCPHYS;
2118	pVM->hmr0.s.vmx.HCPhysVmwriteBitmap = NIL_RTHCPHYS;
2119	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
2120	{
2121	PVMCPUCC pVCpu = VMCC_GET_CPU(pVM, idCpu);
2122	hmR0VmxVmcsInfoInit(&pVCpu->hmr0.s.vmx.VmcsInfo, &pVCpu->hm.s.vmx.VmcsInfo);
2123	hmR0VmxVmcsInfoInit(&pVCpu->hmr0.s.vmx.VmcsInfoNstGst, &pVCpu->hm.s.vmx.VmcsInfoNstGst);
2124	}
2125	}
2126
2127	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
2128	/**
2129	* Returns whether an MSR at the given MSR-bitmap offset is intercepted or not.
2130	*
2131	* @returns @c true if the MSR is intercepted, @c false otherwise.
2132	* @param pvMsrBitmap The MSR bitmap.
2133	* @param offMsr The MSR byte offset.
2134	* @param iBit The bit offset from the byte offset.
2135	*/
2136	DECLINLINE(bool) hmR0VmxIsMsrBitSet(const void *pvMsrBitmap, uint16_t offMsr, int32_t iBit)
2137	{
2138	uint8_t const * const pbMsrBitmap = (uint8_t const * const)pvMsrBitmap;
2139	Assert(pbMsrBitmap);
2140	Assert(offMsr + (iBit >> 3) <= X86_PAGE_4K_SIZE);
2141	return ASMBitTest(pbMsrBitmap + offMsr, iBit);
2142	}
2143	#endif
2144
2145	/**
2146	* Sets the permission bits for the specified MSR in the given MSR bitmap.
2147	*
2148	* If the passed VMCS is a nested-guest VMCS, this function ensures that the
2149	* read/write intercept is cleared from the MSR bitmap used for hardware-assisted
2150	* VMX execution of the nested-guest, only if nested-guest is also not intercepting
2151	* the read/write access of this MSR.
2152	*
2153	* @param pVCpu The cross context virtual CPU structure.
2154	* @param pVmcsInfo The VMCS info. object.
2155	* @param fIsNstGstVmcs Whether this is a nested-guest VMCS.
2156	* @param idMsr The MSR value.
2157	* @param fMsrpm The MSR permissions (see VMXMSRPM_XXX). This must
2158	* include both a read -and- a write permission!
2159	*
2160	* @sa CPUMGetVmxMsrPermission.
2161	* @remarks Can be called with interrupts disabled.
2162	*/
2163	static void hmR0VmxSetMsrPermission(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, bool fIsNstGstVmcs, uint32_t idMsr, uint32_t fMsrpm)
2164	{
2165	uint8_t pbMsrBitmap = (uint8_t )pVmcsInfo->pvMsrBitmap;
2166	Assert(pbMsrBitmap);
2167	Assert(VMXMSRPM_IS_FLAG_VALID(fMsrpm));
2168
2169	/*
2170	* MSR-bitmap Layout:
2171	* Byte index MSR range Interpreted as
2172	* 0x000 - 0x3ff 0x00000000 - 0x00001fff Low MSR read bits.
2173	* 0x400 - 0x7ff 0xc0000000 - 0xc0001fff High MSR read bits.
2174	* 0x800 - 0xbff 0x00000000 - 0x00001fff Low MSR write bits.
2175	* 0xc00 - 0xfff 0xc0000000 - 0xc0001fff High MSR write bits.
2176	*
2177	* A bit corresponding to an MSR within the above range causes a VM-exit
2178	* if the bit is 1 on executions of RDMSR/WRMSR. If an MSR falls out of
2179	* the MSR range, it always cause a VM-exit.
2180	*
2181	* See Intel spec. 24.6.9 "MSR-Bitmap Address".
2182	*/
2183	uint16_t const offBitmapRead = 0;
2184	uint16_t const offBitmapWrite = 0x800;
2185	uint16_t offMsr;
2186	int32_t iBit;
2187	if (idMsr <= UINT32_C(0x00001fff))
2188	{
2189	offMsr = 0;
2190	iBit = idMsr;
2191	}
2192	else if (idMsr - UINT32_C(0xc0000000) <= UINT32_C(0x00001fff))
2193	{
2194	offMsr = 0x400;
2195	iBit = idMsr - UINT32_C(0xc0000000);
2196	}
2197	else
2198	AssertMsgFailedReturnVoid(("Invalid MSR %#RX32\n", idMsr));
2199
2200	/*
2201	* Set the MSR read permission.
2202	*/
2203	uint16_t const offMsrRead = offBitmapRead + offMsr;
2204	Assert(offMsrRead + (iBit >> 3) < offBitmapWrite);
2205	if (fMsrpm & VMXMSRPM_ALLOW_RD)
2206	{
2207	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
2208	bool const fClear = !fIsNstGstVmcs ? true
2209	: !hmR0VmxIsMsrBitSet(pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pvMsrBitmap), offMsrRead, iBit);
2210	#else
2211	RT_NOREF2(pVCpu, fIsNstGstVmcs);
2212	bool const fClear = true;
2213	#endif
2214	if (fClear)
2215	ASMBitClear(pbMsrBitmap + offMsrRead, iBit);
2216	}
2217	else
2218	ASMBitSet(pbMsrBitmap + offMsrRead, iBit);
2219
2220	/*
2221	* Set the MSR write permission.
2222	*/
2223	uint16_t const offMsrWrite = offBitmapWrite + offMsr;
2224	Assert(offMsrWrite + (iBit >> 3) < X86_PAGE_4K_SIZE);
2225	if (fMsrpm & VMXMSRPM_ALLOW_WR)
2226	{
2227	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
2228	bool const fClear = !fIsNstGstVmcs ? true
2229	: !hmR0VmxIsMsrBitSet(pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pvMsrBitmap), offMsrWrite, iBit);
2230	#else
2231	RT_NOREF2(pVCpu, fIsNstGstVmcs);
2232	bool const fClear = true;
2233	#endif
2234	if (fClear)
2235	ASMBitClear(pbMsrBitmap + offMsrWrite, iBit);
2236	}
2237	else
2238	ASMBitSet(pbMsrBitmap + offMsrWrite, iBit);
2239	}
2240
2241
2242	/**
2243	* Updates the VMCS with the number of effective MSRs in the auto-load/store MSR
2244	* area.
2245	*
2246	* @returns VBox status code.
2247	* @param pVCpu The cross context virtual CPU structure.
2248	* @param pVmcsInfo The VMCS info. object.
2249	* @param cMsrs The number of MSRs.
2250	*/
2251	static int hmR0VmxSetAutoLoadStoreMsrCount(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint32_t cMsrs)
2252	{
2253	/* Shouldn't ever happen but there -is- a number. We're well within the recommended 512. */
2254	uint32_t const cMaxSupportedMsrs = VMX_MISC_MAX_MSRS(g_HmMsrs.u.vmx.u64Misc);
2255	if (RT_LIKELY(cMsrs < cMaxSupportedMsrs))
2256	{
2257	/* Commit the MSR counts to the VMCS and update the cache. */
2258	if (pVmcsInfo->cEntryMsrLoad != cMsrs)
2259	{
2260	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY_MSR_LOAD_COUNT, cMsrs); AssertRC(rc);
2261	rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXIT_MSR_STORE_COUNT, cMsrs); AssertRC(rc);
2262	rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXIT_MSR_LOAD_COUNT, cMsrs); AssertRC(rc);
2263	pVmcsInfo->cEntryMsrLoad = cMsrs;
2264	pVmcsInfo->cExitMsrStore = cMsrs;
2265	pVmcsInfo->cExitMsrLoad = cMsrs;
2266	}
2267	return VINF_SUCCESS;
2268	}
2269
2270	LogRel(("Auto-load/store MSR count exceeded! cMsrs=%u MaxSupported=%u\n", cMsrs, cMaxSupportedMsrs));
2271	pVCpu->hm.s.u32HMError = VMX_UFC_INSUFFICIENT_GUEST_MSR_STORAGE;
2272	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
2273	}
2274
2275
2276	/**
2277	* Adds a new (or updates the value of an existing) guest/host MSR
2278	* pair to be swapped during the world-switch as part of the
2279	* auto-load/store MSR area in the VMCS.
2280	*
2281	* @returns VBox status code.
2282	* @param pVCpu The cross context virtual CPU structure.
2283	* @param pVmxTransient The VMX-transient structure.
2284	* @param idMsr The MSR.
2285	* @param uGuestMsrValue Value of the guest MSR.
2286	* @param fSetReadWrite Whether to set the guest read/write access of this
2287	* MSR (thus not causing a VM-exit).
2288	* @param fUpdateHostMsr Whether to update the value of the host MSR if
2289	* necessary.
2290	*/
2291	static int hmR0VmxAddAutoLoadStoreMsr(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, uint32_t idMsr, uint64_t uGuestMsrValue,
2292	bool fSetReadWrite, bool fUpdateHostMsr)
2293	{
2294	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
2295	bool const fIsNstGstVmcs = pVmxTransient->fIsNestedGuest;
2296	PVMXAUTOMSR pGuestMsrLoad = (PVMXAUTOMSR)pVmcsInfo->pvGuestMsrLoad;
2297	uint32_t cMsrs = pVmcsInfo->cEntryMsrLoad;
2298	uint32_t i;
2299
2300	/* Paranoia. */
2301	Assert(pGuestMsrLoad);
2302
2303	#ifndef DEBUG_bird
2304	LogFlowFunc(("pVCpu=%p idMsr=%#RX32 uGuestMsrValue=%#RX64\n", pVCpu, idMsr, uGuestMsrValue));
2305	#endif
2306
2307	/* Check if the MSR already exists in the VM-entry MSR-load area. */
2308	for (i = 0; i < cMsrs; i++)
2309	{
2310	if (pGuestMsrLoad[i].u32Msr == idMsr)
2311	break;
2312	}
2313
2314	bool fAdded = false;
2315	if (i == cMsrs)
2316	{
2317	/* The MSR does not exist, bump the MSR count to make room for the new MSR. */
2318	++cMsrs;
2319	int rc = hmR0VmxSetAutoLoadStoreMsrCount(pVCpu, pVmcsInfo, cMsrs);
2320	AssertMsgRCReturn(rc, ("Insufficient space to add MSR to VM-entry MSR-load/store area %u\n", idMsr), rc);
2321
2322	/* Set the guest to read/write this MSR without causing VM-exits. */
2323	if ( fSetReadWrite
2324	&& (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS))
2325	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, fIsNstGstVmcs, idMsr, VMXMSRPM_ALLOW_RD_WR);
2326
2327	Log4Func(("Added MSR %#RX32, cMsrs=%u\n", idMsr, cMsrs));
2328	fAdded = true;
2329	}
2330
2331	/* Update the MSR value for the newly added or already existing MSR. */
2332	pGuestMsrLoad[i].u32Msr = idMsr;
2333	pGuestMsrLoad[i].u64Value = uGuestMsrValue;
2334
2335	/* Create the corresponding slot in the VM-exit MSR-store area if we use a different page. */
2336	if (hmR0VmxIsSeparateExitMsrStoreAreaVmcs(pVmcsInfo))
2337	{
2338	PVMXAUTOMSR pGuestMsrStore = (PVMXAUTOMSR)pVmcsInfo->pvGuestMsrStore;
2339	pGuestMsrStore[i].u32Msr = idMsr;
2340	pGuestMsrStore[i].u64Value = uGuestMsrValue;
2341	}
2342
2343	/* Update the corresponding slot in the host MSR area. */
2344	PVMXAUTOMSR pHostMsr = (PVMXAUTOMSR)pVmcsInfo->pvHostMsrLoad;
2345	Assert(pHostMsr != pVmcsInfo->pvGuestMsrLoad);
2346	Assert(pHostMsr != pVmcsInfo->pvGuestMsrStore);
2347	pHostMsr[i].u32Msr = idMsr;
2348
2349	/*
2350	* Only if the caller requests to update the host MSR value AND we've newly added the
2351	* MSR to the host MSR area do we actually update the value. Otherwise, it will be
2352	* updated by hmR0VmxUpdateAutoLoadHostMsrs().
2353	*
2354	* We do this for performance reasons since reading MSRs may be quite expensive.
2355	*/
2356	if (fAdded)
2357	{
2358	if (fUpdateHostMsr)
2359	{
2360	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2361	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2362	pHostMsr[i].u64Value = ASMRdMsr(idMsr);
2363	}
2364	else
2365	{
2366	/* Someone else can do the work. */
2367	pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs = false;
2368	}
2369	}
2370	return VINF_SUCCESS;
2371	}
2372
2373
2374	/**
2375	* Removes a guest/host MSR pair to be swapped during the world-switch from the
2376	* auto-load/store MSR area in the VMCS.
2377	*
2378	* @returns VBox status code.
2379	* @param pVCpu The cross context virtual CPU structure.
2380	* @param pVmxTransient The VMX-transient structure.
2381	* @param idMsr The MSR.
2382	*/
2383	static int hmR0VmxRemoveAutoLoadStoreMsr(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, uint32_t idMsr)
2384	{
2385	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
2386	bool const fIsNstGstVmcs = pVmxTransient->fIsNestedGuest;
2387	PVMXAUTOMSR pGuestMsrLoad = (PVMXAUTOMSR)pVmcsInfo->pvGuestMsrLoad;
2388	uint32_t cMsrs = pVmcsInfo->cEntryMsrLoad;
2389
2390	#ifndef DEBUG_bird
2391	LogFlowFunc(("pVCpu=%p idMsr=%#RX32\n", pVCpu, idMsr));
2392	#endif
2393
2394	for (uint32_t i = 0; i < cMsrs; i++)
2395	{
2396	/* Find the MSR. */
2397	if (pGuestMsrLoad[i].u32Msr == idMsr)
2398	{
2399	/*
2400	* If it's the last MSR, we only need to reduce the MSR count.
2401	* If it's -not- the last MSR, copy the last MSR in place of it and reduce the MSR count.
2402	*/
2403	if (i < cMsrs - 1)
2404	{
2405	/* Remove it from the VM-entry MSR-load area. */
2406	pGuestMsrLoad[i].u32Msr = pGuestMsrLoad[cMsrs - 1].u32Msr;
2407	pGuestMsrLoad[i].u64Value = pGuestMsrLoad[cMsrs - 1].u64Value;
2408
2409	/* Remove it from the VM-exit MSR-store area if it's in a different page. */
2410	if (hmR0VmxIsSeparateExitMsrStoreAreaVmcs(pVmcsInfo))
2411	{
2412	PVMXAUTOMSR pGuestMsrStore = (PVMXAUTOMSR)pVmcsInfo->pvGuestMsrStore;
2413	Assert(pGuestMsrStore[i].u32Msr == idMsr);
2414	pGuestMsrStore[i].u32Msr = pGuestMsrStore[cMsrs - 1].u32Msr;
2415	pGuestMsrStore[i].u64Value = pGuestMsrStore[cMsrs - 1].u64Value;
2416	}
2417
2418	/* Remove it from the VM-exit MSR-load area. */
2419	PVMXAUTOMSR pHostMsr = (PVMXAUTOMSR)pVmcsInfo->pvHostMsrLoad;
2420	Assert(pHostMsr[i].u32Msr == idMsr);
2421	pHostMsr[i].u32Msr = pHostMsr[cMsrs - 1].u32Msr;
2422	pHostMsr[i].u64Value = pHostMsr[cMsrs - 1].u64Value;
2423	}
2424
2425	/* Reduce the count to reflect the removed MSR and bail. */
2426	--cMsrs;
2427	break;
2428	}
2429	}
2430
2431	/* Update the VMCS if the count changed (meaning the MSR was found and removed). */
2432	if (cMsrs != pVmcsInfo->cEntryMsrLoad)
2433	{
2434	int rc = hmR0VmxSetAutoLoadStoreMsrCount(pVCpu, pVmcsInfo, cMsrs);
2435	AssertRCReturn(rc, rc);
2436
2437	/* We're no longer swapping MSRs during the world-switch, intercept guest read/writes to them. */
2438	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
2439	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, fIsNstGstVmcs, idMsr, VMXMSRPM_EXIT_RD \| VMXMSRPM_EXIT_WR);
2440
2441	Log4Func(("Removed MSR %#RX32, cMsrs=%u\n", idMsr, cMsrs));
2442	return VINF_SUCCESS;
2443	}
2444
2445	return VERR_NOT_FOUND;
2446	}
2447
2448
2449	/**
2450	* Checks if the specified guest MSR is part of the VM-entry MSR-load area.
2451	*
2452	* @returns @c true if found, @c false otherwise.
2453	* @param pVmcsInfo The VMCS info. object.
2454	* @param idMsr The MSR to find.
2455	*/
2456	static bool hmR0VmxIsAutoLoadGuestMsr(PCVMXVMCSINFO pVmcsInfo, uint32_t idMsr)
2457	{
2458	PCVMXAUTOMSR pMsrs = (PCVMXAUTOMSR)pVmcsInfo->pvGuestMsrLoad;
2459	uint32_t const cMsrs = pVmcsInfo->cEntryMsrLoad;
2460	Assert(pMsrs);
2461	Assert(sizeof(pMsrs) cMsrs <= X86_PAGE_4K_SIZE);
2462	for (uint32_t i = 0; i < cMsrs; i++)
2463	{
2464	if (pMsrs[i].u32Msr == idMsr)
2465	return true;
2466	}
2467	return false;
2468	}
2469
2470
2471	/**
2472	* Updates the value of all host MSRs in the VM-exit MSR-load area.
2473	*
2474	* @param pVCpu The cross context virtual CPU structure.
2475	* @param pVmcsInfo The VMCS info. object.
2476	*
2477	* @remarks No-long-jump zone!!!
2478	*/
2479	static void hmR0VmxUpdateAutoLoadHostMsrs(PCVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
2480	{
2481	RT_NOREF(pVCpu);
2482	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2483
2484	PVMXAUTOMSR pHostMsrLoad = (PVMXAUTOMSR)pVmcsInfo->pvHostMsrLoad;
2485	uint32_t const cMsrs = pVmcsInfo->cExitMsrLoad;
2486	Assert(pHostMsrLoad);
2487	Assert(sizeof(pHostMsrLoad) cMsrs <= X86_PAGE_4K_SIZE);
2488	LogFlowFunc(("pVCpu=%p cMsrs=%u\n", pVCpu, cMsrs));
2489	for (uint32_t i = 0; i < cMsrs; i++)
2490	{
2491	/*
2492	* Performance hack for the host EFER MSR. We use the cached value rather than re-read it.
2493	* Strict builds will catch mismatches in hmR0VmxCheckAutoLoadStoreMsrs(). See @bugref{7368}.
2494	*/
2495	if (pHostMsrLoad[i].u32Msr == MSR_K6_EFER)
2496	pHostMsrLoad[i].u64Value = g_uHmVmxHostMsrEfer;
2497	else
2498	pHostMsrLoad[i].u64Value = ASMRdMsr(pHostMsrLoad[i].u32Msr);
2499	}
2500	}
2501
2502
2503	/**
2504	* Saves a set of host MSRs to allow read/write passthru access to the guest and
2505	* perform lazy restoration of the host MSRs while leaving VT-x.
2506	*
2507	* @param pVCpu The cross context virtual CPU structure.
2508	*
2509	* @remarks No-long-jump zone!!!
2510	*/
2511	static void hmR0VmxLazySaveHostMsrs(PVMCPUCC pVCpu)
2512	{
2513	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2514
2515	/*
2516	* Note: If you're adding MSRs here, make sure to update the MSR-bitmap accesses in hmR0VmxSetupVmcsProcCtls().
2517	*/
2518	if (!(pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_SAVED_HOST))
2519	{
2520	Assert(!(pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST)); /* Guest MSRs better not be loaded now. */
2521	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.fAllow64BitGuests)
2522	{
2523	pVCpu->hmr0.s.vmx.u64HostMsrLStar = ASMRdMsr(MSR_K8_LSTAR);
2524	pVCpu->hmr0.s.vmx.u64HostMsrStar = ASMRdMsr(MSR_K6_STAR);
2525	pVCpu->hmr0.s.vmx.u64HostMsrSfMask = ASMRdMsr(MSR_K8_SF_MASK);
2526	pVCpu->hmr0.s.vmx.u64HostMsrKernelGsBase = ASMRdMsr(MSR_K8_KERNEL_GS_BASE);
2527	}
2528	pVCpu->hmr0.s.vmx.fLazyMsrs \|= VMX_LAZY_MSRS_SAVED_HOST;
2529	}
2530	}
2531
2532
2533	/**
2534	* Checks whether the MSR belongs to the set of guest MSRs that we restore
2535	* lazily while leaving VT-x.
2536	*
2537	* @returns true if it does, false otherwise.
2538	* @param pVCpu The cross context virtual CPU structure.
2539	* @param idMsr The MSR to check.
2540	*/
2541	static bool hmR0VmxIsLazyGuestMsr(PCVMCPUCC pVCpu, uint32_t idMsr)
2542	{
2543	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.fAllow64BitGuests)
2544	{
2545	switch (idMsr)
2546	{
2547	case MSR_K8_LSTAR:
2548	case MSR_K6_STAR:
2549	case MSR_K8_SF_MASK:
2550	case MSR_K8_KERNEL_GS_BASE:
2551	return true;
2552	}
2553	}
2554	return false;
2555	}
2556
2557
2558	/**
2559	* Loads a set of guests MSRs to allow read/passthru to the guest.
2560	*
2561	* The name of this function is slightly confusing. This function does NOT
2562	* postpone loading, but loads the MSR right now. "hmR0VmxLazy" is simply a
2563	* common prefix for functions dealing with "lazy restoration" of the shared
2564	* MSRs.
2565	*
2566	* @param pVCpu The cross context virtual CPU structure.
2567	*
2568	* @remarks No-long-jump zone!!!
2569	*/
2570	static void hmR0VmxLazyLoadGuestMsrs(PVMCPUCC pVCpu)
2571	{
2572	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2573	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2574
2575	Assert(pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_SAVED_HOST);
2576	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.fAllow64BitGuests)
2577	{
2578	/*
2579	* If the guest MSRs are not loaded -and- if all the guest MSRs are identical
2580	* to the MSRs on the CPU (which are the saved host MSRs, see assertion above) then
2581	* we can skip a few MSR writes.
2582	*
2583	* Otherwise, it implies either 1. they're not loaded, or 2. they're loaded but the
2584	* guest MSR values in the guest-CPU context might be different to what's currently
2585	* loaded in the CPU. In either case, we need to write the new guest MSR values to the
2586	* CPU, see @bugref{8728}.
2587	*/
2588	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
2589	if ( !(pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST)
2590	&& pCtx->msrKERNELGSBASE == pVCpu->hmr0.s.vmx.u64HostMsrKernelGsBase
2591	&& pCtx->msrLSTAR == pVCpu->hmr0.s.vmx.u64HostMsrLStar
2592	&& pCtx->msrSTAR == pVCpu->hmr0.s.vmx.u64HostMsrStar
2593	&& pCtx->msrSFMASK == pVCpu->hmr0.s.vmx.u64HostMsrSfMask)
2594	{
2595	#ifdef VBOX_STRICT
2596	Assert(ASMRdMsr(MSR_K8_KERNEL_GS_BASE) == pCtx->msrKERNELGSBASE);
2597	Assert(ASMRdMsr(MSR_K8_LSTAR) == pCtx->msrLSTAR);
2598	Assert(ASMRdMsr(MSR_K6_STAR) == pCtx->msrSTAR);
2599	Assert(ASMRdMsr(MSR_K8_SF_MASK) == pCtx->msrSFMASK);
2600	#endif
2601	}
2602	else
2603	{
2604	ASMWrMsr(MSR_K8_KERNEL_GS_BASE, pCtx->msrKERNELGSBASE);
2605	ASMWrMsr(MSR_K8_LSTAR, pCtx->msrLSTAR);
2606	ASMWrMsr(MSR_K6_STAR, pCtx->msrSTAR);
2607	/* The system call flag mask register isn't as benign and accepting of all
2608	values as the above, so mask it to avoid #GP'ing on corrupted input. */
2609	Assert(!(pCtx->msrSFMASK & ~(uint64_t)UINT32_MAX));
2610	ASMWrMsr(MSR_K8_SF_MASK, pCtx->msrSFMASK & UINT32_MAX);
2611	}
2612	}
2613	pVCpu->hmr0.s.vmx.fLazyMsrs \|= VMX_LAZY_MSRS_LOADED_GUEST;
2614	}
2615
2616
2617	/**
2618	* Performs lazy restoration of the set of host MSRs if they were previously
2619	* loaded with guest MSR values.
2620	*
2621	* @param pVCpu The cross context virtual CPU structure.
2622	*
2623	* @remarks No-long-jump zone!!!
2624	* @remarks The guest MSRs should have been saved back into the guest-CPU
2625	* context by hmR0VmxImportGuestState()!!!
2626	*/
2627	static void hmR0VmxLazyRestoreHostMsrs(PVMCPUCC pVCpu)
2628	{
2629	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2630	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2631
2632	if (pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST)
2633	{
2634	Assert(pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_SAVED_HOST);
2635	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.fAllow64BitGuests)
2636	{
2637	ASMWrMsr(MSR_K8_LSTAR, pVCpu->hmr0.s.vmx.u64HostMsrLStar);
2638	ASMWrMsr(MSR_K6_STAR, pVCpu->hmr0.s.vmx.u64HostMsrStar);
2639	ASMWrMsr(MSR_K8_SF_MASK, pVCpu->hmr0.s.vmx.u64HostMsrSfMask);
2640	ASMWrMsr(MSR_K8_KERNEL_GS_BASE, pVCpu->hmr0.s.vmx.u64HostMsrKernelGsBase);
2641	}
2642	}
2643	pVCpu->hmr0.s.vmx.fLazyMsrs &= ~(VMX_LAZY_MSRS_LOADED_GUEST \| VMX_LAZY_MSRS_SAVED_HOST);
2644	}
2645
2646
2647	/**
2648	* Verifies that our cached values of the VMCS fields are all consistent with
2649	* what's actually present in the VMCS.
2650	*
2651	* @returns VBox status code.
2652	* @retval VINF_SUCCESS if all our caches match their respective VMCS fields.
2653	* @retval VERR_VMX_VMCS_FIELD_CACHE_INVALID if a cache field doesn't match the
2654	* VMCS content. HMCPU error-field is
2655	* updated, see VMX_VCI_XXX.
2656	* @param pVCpu The cross context virtual CPU structure.
2657	* @param pVmcsInfo The VMCS info. object.
2658	* @param fIsNstGstVmcs Whether this is a nested-guest VMCS.
2659	*/
2660	static int hmR0VmxCheckCachedVmcsCtls(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo, bool fIsNstGstVmcs)
2661	{
2662	const char * const pcszVmcs = fIsNstGstVmcs ? "Nested-guest VMCS" : "VMCS";
2663
2664	uint32_t u32Val;
2665	int rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY, &u32Val);
2666	AssertRC(rc);
2667	AssertMsgReturnStmt(pVmcsInfo->u32EntryCtls == u32Val,
2668	("%s controls mismatch: Cache=%#RX32 VMCS=%#RX32\n", pcszVmcs, pVmcsInfo->u32EntryCtls, u32Val),
2669	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_ENTRY,
2670	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2671
2672	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_EXIT, &u32Val);
2673	AssertRC(rc);
2674	AssertMsgReturnStmt(pVmcsInfo->u32ExitCtls == u32Val,
2675	("%s controls mismatch: Cache=%#RX32 VMCS=%#RX32\n", pcszVmcs, pVmcsInfo->u32ExitCtls, u32Val),
2676	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_EXIT,
2677	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2678
2679	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_PIN_EXEC, &u32Val);
2680	AssertRC(rc);
2681	AssertMsgReturnStmt(pVmcsInfo->u32PinCtls == u32Val,
2682	("%s controls mismatch: Cache=%#RX32 VMCS=%#RX32\n", pcszVmcs, pVmcsInfo->u32PinCtls, u32Val),
2683	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_PIN_EXEC,
2684	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2685
2686	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, &u32Val);
2687	AssertRC(rc);
2688	AssertMsgReturnStmt(pVmcsInfo->u32ProcCtls == u32Val,
2689	("%s controls mismatch: Cache=%#RX32 VMCS=%#RX32\n", pcszVmcs, pVmcsInfo->u32ProcCtls, u32Val),
2690	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_PROC_EXEC,
2691	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2692
2693	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_SECONDARY_CTLS)
2694	{
2695	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, &u32Val);
2696	AssertRC(rc);
2697	AssertMsgReturnStmt(pVmcsInfo->u32ProcCtls2 == u32Val,
2698	("%s controls mismatch: Cache=%#RX32 VMCS=%#RX32\n", pcszVmcs, pVmcsInfo->u32ProcCtls2, u32Val),
2699	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_PROC_EXEC2,
2700	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2701	}
2702
2703	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, &u32Val);
2704	AssertRC(rc);
2705	AssertMsgReturnStmt(pVmcsInfo->u32XcptBitmap == u32Val,
2706	("%s exception bitmap mismatch: Cache=%#RX32 VMCS=%#RX32\n", pcszVmcs, pVmcsInfo->u32XcptBitmap, u32Val),
2707	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_XCPT_BITMAP,
2708	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2709
2710	uint64_t u64Val;
2711	rc = VMXReadVmcs64(VMX_VMCS64_CTRL_TSC_OFFSET_FULL, &u64Val);
2712	AssertRC(rc);
2713	AssertMsgReturnStmt(pVmcsInfo->u64TscOffset == u64Val,
2714	("%s TSC offset mismatch: Cache=%#RX64 VMCS=%#RX64\n", pcszVmcs, pVmcsInfo->u64TscOffset, u64Val),
2715	pVCpu->hm.s.u32HMError = VMX_VCI_CTRL_TSC_OFFSET,
2716	VERR_VMX_VMCS_FIELD_CACHE_INVALID);
2717
2718	NOREF(pcszVmcs);
2719	return VINF_SUCCESS;
2720	}
2721
2722	#ifdef VBOX_STRICT
2723
2724	/**
2725	* Verifies that our cached host EFER MSR value has not changed since we cached it.
2726	*
2727	* @param pVmcsInfo The VMCS info. object.
2728	*/
2729	static void hmR0VmxCheckHostEferMsr(PCVMXVMCSINFO pVmcsInfo)
2730	{
2731	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2732
2733	if (pVmcsInfo->u32ExitCtls & VMX_EXIT_CTLS_LOAD_EFER_MSR)
2734	{
2735	uint64_t const uHostEferMsr = ASMRdMsr(MSR_K6_EFER);
2736	uint64_t const uHostEferMsrCache = g_uHmVmxHostMsrEfer;
2737	uint64_t uVmcsEferMsrVmcs;
2738	int rc = VMXReadVmcs64(VMX_VMCS64_HOST_EFER_FULL, &uVmcsEferMsrVmcs);
2739	AssertRC(rc);
2740
2741	AssertMsgReturnVoid(uHostEferMsr == uVmcsEferMsrVmcs,
2742	("EFER Host/VMCS mismatch! host=%#RX64 vmcs=%#RX64\n", uHostEferMsr, uVmcsEferMsrVmcs));
2743	AssertMsgReturnVoid(uHostEferMsr == uHostEferMsrCache,
2744	("EFER Host/Cache mismatch! host=%#RX64 cache=%#RX64\n", uHostEferMsr, uHostEferMsrCache));
2745	}
2746	}
2747
2748
2749	/**
2750	* Verifies whether the guest/host MSR pairs in the auto-load/store area in the
2751	* VMCS are correct.
2752	*
2753	* @param pVCpu The cross context virtual CPU structure.
2754	* @param pVmcsInfo The VMCS info. object.
2755	* @param fIsNstGstVmcs Whether this is a nested-guest VMCS.
2756	*/
2757	static void hmR0VmxCheckAutoLoadStoreMsrs(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo, bool fIsNstGstVmcs)
2758	{
2759	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2760
2761	/* Read the various MSR-area counts from the VMCS. */
2762	uint32_t cEntryLoadMsrs;
2763	uint32_t cExitStoreMsrs;
2764	uint32_t cExitLoadMsrs;
2765	int rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY_MSR_LOAD_COUNT, &cEntryLoadMsrs); AssertRC(rc);
2766	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_EXIT_MSR_STORE_COUNT, &cExitStoreMsrs); AssertRC(rc);
2767	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_EXIT_MSR_LOAD_COUNT, &cExitLoadMsrs); AssertRC(rc);
2768
2769	/* Verify all the MSR counts are the same. */
2770	Assert(cEntryLoadMsrs == cExitStoreMsrs);
2771	Assert(cExitStoreMsrs == cExitLoadMsrs);
2772	uint32_t const cMsrs = cExitLoadMsrs;
2773
2774	/* Verify the MSR counts do not exceed the maximum count supported by the hardware. */
2775	Assert(cMsrs < VMX_MISC_MAX_MSRS(g_HmMsrs.u.vmx.u64Misc));
2776
2777	/* Verify the MSR counts are within the allocated page size. */
2778	Assert(sizeof(VMXAUTOMSR) * cMsrs <= X86_PAGE_4K_SIZE);
2779
2780	/* Verify the relevant contents of the MSR areas match. */
2781	PCVMXAUTOMSR pGuestMsrLoad = (PCVMXAUTOMSR)pVmcsInfo->pvGuestMsrLoad;
2782	PCVMXAUTOMSR pGuestMsrStore = (PCVMXAUTOMSR)pVmcsInfo->pvGuestMsrStore;
2783	PCVMXAUTOMSR pHostMsrLoad = (PCVMXAUTOMSR)pVmcsInfo->pvHostMsrLoad;
2784	bool const fSeparateExitMsrStorePage = hmR0VmxIsSeparateExitMsrStoreAreaVmcs(pVmcsInfo);
2785	for (uint32_t i = 0; i < cMsrs; i++)
2786	{
2787	/* Verify that the MSRs are paired properly and that the host MSR has the correct value. */
2788	if (fSeparateExitMsrStorePage)
2789	{
2790	AssertMsgReturnVoid(pGuestMsrLoad->u32Msr == pGuestMsrStore->u32Msr,
2791	("GuestMsrLoad=%#RX32 GuestMsrStore=%#RX32 cMsrs=%u\n",
2792	pGuestMsrLoad->u32Msr, pGuestMsrStore->u32Msr, cMsrs));
2793	}
2794
2795	AssertMsgReturnVoid(pHostMsrLoad->u32Msr == pGuestMsrLoad->u32Msr,
2796	("HostMsrLoad=%#RX32 GuestMsrLoad=%#RX32 cMsrs=%u\n",
2797	pHostMsrLoad->u32Msr, pGuestMsrLoad->u32Msr, cMsrs));
2798
2799	uint64_t const u64HostMsr = ASMRdMsr(pHostMsrLoad->u32Msr);
2800	AssertMsgReturnVoid(pHostMsrLoad->u64Value == u64HostMsr,
2801	("u32Msr=%#RX32 VMCS Value=%#RX64 ASMRdMsr=%#RX64 cMsrs=%u\n",
2802	pHostMsrLoad->u32Msr, pHostMsrLoad->u64Value, u64HostMsr, cMsrs));
2803
2804	/* Verify that cached host EFER MSR matches what's loaded on the CPU. */
2805	bool const fIsEferMsr = RT_BOOL(pHostMsrLoad->u32Msr == MSR_K6_EFER);
2806	AssertMsgReturnVoid(!fIsEferMsr \|\| u64HostMsr == g_uHmVmxHostMsrEfer,
2807	("Cached=%#RX64 ASMRdMsr=%#RX64 cMsrs=%u\n", g_uHmVmxHostMsrEfer, u64HostMsr, cMsrs));
2808
2809	/* Verify that the accesses are as expected in the MSR bitmap for auto-load/store MSRs. */
2810	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
2811	{
2812	uint32_t const fMsrpm = CPUMGetVmxMsrPermission(pVmcsInfo->pvMsrBitmap, pGuestMsrLoad->u32Msr);
2813	if (fIsEferMsr)
2814	{
2815	AssertMsgReturnVoid((fMsrpm & VMXMSRPM_EXIT_RD), ("Passthru read for EFER MSR!?\n"));
2816	AssertMsgReturnVoid((fMsrpm & VMXMSRPM_EXIT_WR), ("Passthru write for EFER MSR!?\n"));
2817	}
2818	else
2819	{
2820	/* Verify LBR MSRs (used only for debugging) are intercepted. We don't passthru these MSRs to the guest yet. */
2821	PCVMCC pVM = pVCpu->CTX_SUFF(pVM);
2822	if ( pVM->hmr0.s.vmx.fLbr
2823	&& ( hmR0VmxIsLbrBranchFromMsr(pVM, pGuestMsrLoad->u32Msr, NULL /* pidxMsr */)
2824	\|\| hmR0VmxIsLbrBranchToMsr(pVM, pGuestMsrLoad->u32Msr, NULL /* pidxMsr */)
2825	\|\| pGuestMsrLoad->u32Msr == pVM->hmr0.s.vmx.idLbrTosMsr))
2826	{
2827	AssertMsgReturnVoid((fMsrpm & VMXMSRPM_MASK) == VMXMSRPM_EXIT_RD_WR,
2828	("u32Msr=%#RX32 cMsrs=%u Passthru read/write for LBR MSRs!\n",
2829	pGuestMsrLoad->u32Msr, cMsrs));
2830	}
2831	else if (!fIsNstGstVmcs)
2832	{
2833	AssertMsgReturnVoid((fMsrpm & VMXMSRPM_MASK) == VMXMSRPM_ALLOW_RD_WR,
2834	("u32Msr=%#RX32 cMsrs=%u No passthru read/write!\n", pGuestMsrLoad->u32Msr, cMsrs));
2835	}
2836	else
2837	{
2838	/*
2839	* A nested-guest VMCS must -also- allow read/write passthrough for the MSR for us to
2840	* execute a nested-guest with MSR passthrough.
2841	*
2842	* Check if the nested-guest MSR bitmap allows passthrough, and if so, assert that we
2843	* allow passthrough too.
2844	*/
2845	void const *pvMsrBitmapNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pvMsrBitmap);
2846	Assert(pvMsrBitmapNstGst);
2847	uint32_t const fMsrpmNstGst = CPUMGetVmxMsrPermission(pvMsrBitmapNstGst, pGuestMsrLoad->u32Msr);
2848	AssertMsgReturnVoid(fMsrpm == fMsrpmNstGst,
2849	("u32Msr=%#RX32 cMsrs=%u Permission mismatch fMsrpm=%#x fMsrpmNstGst=%#x!\n",
2850	pGuestMsrLoad->u32Msr, cMsrs, fMsrpm, fMsrpmNstGst));
2851	}
2852	}
2853	}
2854
2855	/* Move to the next MSR. */
2856	pHostMsrLoad++;
2857	pGuestMsrLoad++;
2858	pGuestMsrStore++;
2859	}
2860	}
2861
2862	#endif /* VBOX_STRICT */
2863
2864	/**
2865	* Flushes the TLB using EPT.
2866	*
2867	* @returns VBox status code.
2868	* @param pVCpu The cross context virtual CPU structure of the calling
2869	* EMT. Can be NULL depending on @a enmTlbFlush.
2870	* @param pVmcsInfo The VMCS info. object. Can be NULL depending on @a
2871	* enmTlbFlush.
2872	* @param enmTlbFlush Type of flush.
2873	*
2874	* @remarks Caller is responsible for making sure this function is called only
2875	* when NestedPaging is supported and providing @a enmTlbFlush that is
2876	* supported by the CPU.
2877	* @remarks Can be called with interrupts disabled.
2878	*/
2879	static void hmR0VmxFlushEpt(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo, VMXTLBFLUSHEPT enmTlbFlush)
2880	{
2881	uint64_t au64Descriptor[2];
2882	if (enmTlbFlush == VMXTLBFLUSHEPT_ALL_CONTEXTS)
2883	au64Descriptor[0] = 0;
2884	else
2885	{
2886	Assert(pVCpu);
2887	Assert(pVmcsInfo);
2888	au64Descriptor[0] = pVmcsInfo->HCPhysEPTP;
2889	}
2890	au64Descriptor[1] = 0; /* MBZ. Intel spec. 33.3 "VMX Instructions" */
2891
2892	int rc = VMXR0InvEPT(enmTlbFlush, &au64Descriptor[0]);
2893	AssertMsg(rc == VINF_SUCCESS, ("VMXR0InvEPT %#x %#RHp failed. rc=%Rrc\n", enmTlbFlush, au64Descriptor[0], rc));
2894
2895	if ( RT_SUCCESS(rc)
2896	&& pVCpu)
2897	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushNestedPaging);
2898	}
2899
2900
2901	/**
2902	* Flushes the TLB using VPID.
2903	*
2904	* @returns VBox status code.
2905	* @param pVCpu The cross context virtual CPU structure of the calling
2906	* EMT. Can be NULL depending on @a enmTlbFlush.
2907	* @param enmTlbFlush Type of flush.
2908	* @param GCPtr Virtual address of the page to flush (can be 0 depending
2909	* on @a enmTlbFlush).
2910	*
2911	* @remarks Can be called with interrupts disabled.
2912	*/
2913	static void hmR0VmxFlushVpid(PVMCPUCC pVCpu, VMXTLBFLUSHVPID enmTlbFlush, RTGCPTR GCPtr)
2914	{
2915	Assert(pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fVpid);
2916
2917	uint64_t au64Descriptor[2];
2918	if (enmTlbFlush == VMXTLBFLUSHVPID_ALL_CONTEXTS)
2919	{
2920	au64Descriptor[0] = 0;
2921	au64Descriptor[1] = 0;
2922	}
2923	else
2924	{
2925	AssertPtr(pVCpu);
2926	AssertMsg(pVCpu->hmr0.s.uCurrentAsid != 0, ("VMXR0InvVPID: invalid ASID %lu\n", pVCpu->hmr0.s.uCurrentAsid));
2927	AssertMsg(pVCpu->hmr0.s.uCurrentAsid <= UINT16_MAX, ("VMXR0InvVPID: invalid ASID %lu\n", pVCpu->hmr0.s.uCurrentAsid));
2928	au64Descriptor[0] = pVCpu->hmr0.s.uCurrentAsid;
2929	au64Descriptor[1] = GCPtr;
2930	}
2931
2932	int rc = VMXR0InvVPID(enmTlbFlush, &au64Descriptor[0]);
2933	AssertMsg(rc == VINF_SUCCESS,
2934	("VMXR0InvVPID %#x %u %RGv failed with %Rrc\n", enmTlbFlush, pVCpu ? pVCpu->hmr0.s.uCurrentAsid : 0, GCPtr, rc));
2935
2936	if ( RT_SUCCESS(rc)
2937	&& pVCpu)
2938	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
2939	NOREF(rc);
2940	}
2941
2942
2943	/**
2944	* Invalidates a guest page by guest virtual address. Only relevant for EPT/VPID,
2945	* otherwise there is nothing really to invalidate.
2946	*
2947	* @returns VBox status code.
2948	* @param pVCpu The cross context virtual CPU structure.
2949	* @param GCVirt Guest virtual address of the page to invalidate.
2950	*/
2951	VMMR0DECL(int) VMXR0InvalidatePage(PVMCPUCC pVCpu, RTGCPTR GCVirt)
2952	{
2953	AssertPtr(pVCpu);
2954	LogFlowFunc(("pVCpu=%p GCVirt=%RGv\n", pVCpu, GCVirt));
2955
2956	if (!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TLB_FLUSH))
2957	{
2958	/*
2959	* We must invalidate the guest TLB entry in either case, we cannot ignore it even for
2960	* the EPT case. See @bugref{6043} and @bugref{6177}.
2961	*
2962	* Set the VMCPU_FF_TLB_FLUSH force flag and flush before VM-entry in hmR0VmxFlushTLB*()
2963	* as this function maybe called in a loop with individual addresses.
2964	*/
2965	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
2966	if (pVM->hmr0.s.vmx.fVpid)
2967	{
2968	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_INDIV_ADDR)
2969	{
2970	hmR0VmxFlushVpid(pVCpu, VMXTLBFLUSHVPID_INDIV_ADDR, GCVirt);
2971	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
2972	}
2973	else
2974	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
2975	}
2976	else if (pVM->hmr0.s.fNestedPaging)
2977	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
2978	}
2979
2980	return VINF_SUCCESS;
2981	}
2982
2983
2984	/**
2985	* Dummy placeholder for tagged-TLB flush handling before VM-entry. Used in the
2986	* case where neither EPT nor VPID is supported by the CPU.
2987	*
2988	* @param pHostCpu The HM physical-CPU structure.
2989	* @param pVCpu The cross context virtual CPU structure.
2990	*
2991	* @remarks Called with interrupts disabled.
2992	*/
2993	static void hmR0VmxFlushTaggedTlbNone(PHMPHYSCPU pHostCpu, PVMCPUCC pVCpu)
2994	{
2995	AssertPtr(pVCpu);
2996	AssertPtr(pHostCpu);
2997
2998	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH);
2999
3000	Assert(pHostCpu->idCpu != NIL_RTCPUID);
3001	pVCpu->hmr0.s.idLastCpu = pHostCpu->idCpu;
3002	pVCpu->hmr0.s.cTlbFlushes = pHostCpu->cTlbFlushes;
3003	pVCpu->hmr0.s.fForceTLBFlush = false;
3004	return;
3005	}
3006
3007
3008	/**
3009	* Flushes the tagged-TLB entries for EPT+VPID CPUs as necessary.
3010	*
3011	* @param pHostCpu The HM physical-CPU structure.
3012	* @param pVCpu The cross context virtual CPU structure.
3013	* @param pVmcsInfo The VMCS info. object.
3014	*
3015	* @remarks All references to "ASID" in this function pertains to "VPID" in Intel's
3016	* nomenclature. The reason is, to avoid confusion in compare statements
3017	* since the host-CPU copies are named "ASID".
3018	*
3019	* @remarks Called with interrupts disabled.
3020	*/
3021	static void hmR0VmxFlushTaggedTlbBoth(PHMPHYSCPU pHostCpu, PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
3022	{
3023	#ifdef VBOX_WITH_STATISTICS
3024	bool fTlbFlushed = false;
3025	# define HMVMX_SET_TAGGED_TLB_FLUSHED() do { fTlbFlushed = true; } while (0)
3026	# define HMVMX_UPDATE_FLUSH_SKIPPED_STAT() do { \
3027	if (!fTlbFlushed) \
3028	STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch); \
3029	} while (0)
3030	#else
3031	# define HMVMX_SET_TAGGED_TLB_FLUSHED() do { } while (0)
3032	# define HMVMX_UPDATE_FLUSH_SKIPPED_STAT() do { } while (0)
3033	#endif
3034
3035	AssertPtr(pVCpu);
3036	AssertPtr(pHostCpu);
3037	Assert(pHostCpu->idCpu != NIL_RTCPUID);
3038
3039	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3040	AssertMsg(pVM->hmr0.s.fNestedPaging && pVM->hmr0.s.vmx.fVpid,
3041	("hmR0VmxFlushTaggedTlbBoth cannot be invoked unless NestedPaging & VPID are enabled."
3042	"fNestedPaging=%RTbool fVpid=%RTbool", pVM->hmr0.s.fNestedPaging, pVM->hmr0.s.vmx.fVpid));
3043
3044	/*
3045	* Force a TLB flush for the first world-switch if the current CPU differs from the one we
3046	* ran on last. If the TLB flush count changed, another VM (VCPU rather) has hit the ASID
3047	* limit while flushing the TLB or the host CPU is online after a suspend/resume, so we
3048	* cannot reuse the current ASID anymore.
3049	*/
3050	if ( pVCpu->hmr0.s.idLastCpu != pHostCpu->idCpu
3051	\|\| pVCpu->hmr0.s.cTlbFlushes != pHostCpu->cTlbFlushes)
3052	{
3053	++pHostCpu->uCurrentAsid;
3054	if (pHostCpu->uCurrentAsid >= g_uHmMaxAsid)
3055	{
3056	pHostCpu->uCurrentAsid = 1; /* Wraparound to 1; host uses 0. */
3057	pHostCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new VPID. */
3058	pHostCpu->fFlushAsidBeforeUse = true; /* All VCPUs that run on this host CPU must flush their new VPID before use. */
3059	}
3060
3061	pVCpu->hmr0.s.uCurrentAsid = pHostCpu->uCurrentAsid;
3062	pVCpu->hmr0.s.idLastCpu = pHostCpu->idCpu;
3063	pVCpu->hmr0.s.cTlbFlushes = pHostCpu->cTlbFlushes;
3064
3065	/*
3066	* Flush by EPT when we get rescheduled to a new host CPU to ensure EPT-only tagged mappings are also
3067	* invalidated. We don't need to flush-by-VPID here as flushing by EPT covers it. See @bugref{6568}.
3068	*/
3069	hmR0VmxFlushEpt(pVCpu, pVmcsInfo, pVM->hmr0.s.vmx.enmTlbFlushEpt);
3070	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
3071	HMVMX_SET_TAGGED_TLB_FLUSHED();
3072	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH);
3073	}
3074	else if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH)) /* Check for explicit TLB flushes. */
3075	{
3076	/*
3077	* Changes to the EPT paging structure by VMM requires flushing-by-EPT as the CPU
3078	* creates guest-physical (ie. only EPT-tagged) mappings while traversing the EPT
3079	* tables when EPT is in use. Flushing-by-VPID will only flush linear (only
3080	* VPID-tagged) and combined (EPT+VPID tagged) mappings but not guest-physical
3081	* mappings, see @bugref{6568}.
3082	*
3083	* See Intel spec. 28.3.2 "Creating and Using Cached Translation Information".
3084	*/
3085	hmR0VmxFlushEpt(pVCpu, pVmcsInfo, pVM->hmr0.s.vmx.enmTlbFlushEpt);
3086	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
3087	HMVMX_SET_TAGGED_TLB_FLUSHED();
3088	}
3089	else if (pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb)
3090	{
3091	/*
3092	* The nested-guest specifies its own guest-physical address to use as the APIC-access
3093	* address which requires flushing the TLB of EPT cached structures.
3094	*
3095	* See Intel spec. 28.3.3.4 "Guidelines for Use of the INVEPT Instruction".
3096	*/
3097	hmR0VmxFlushEpt(pVCpu, pVmcsInfo, pVM->hmr0.s.vmx.enmTlbFlushEpt);
3098	pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb = false;
3099	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbNstGst);
3100	HMVMX_SET_TAGGED_TLB_FLUSHED();
3101	}
3102
3103
3104	pVCpu->hmr0.s.fForceTLBFlush = false;
3105	HMVMX_UPDATE_FLUSH_SKIPPED_STAT();
3106
3107	Assert(pVCpu->hmr0.s.idLastCpu == pHostCpu->idCpu);
3108	Assert(pVCpu->hmr0.s.cTlbFlushes == pHostCpu->cTlbFlushes);
3109	AssertMsg(pVCpu->hmr0.s.cTlbFlushes == pHostCpu->cTlbFlushes,
3110	("Flush count mismatch for cpu %d (%u vs %u)\n", pHostCpu->idCpu, pVCpu->hmr0.s.cTlbFlushes, pHostCpu->cTlbFlushes));
3111	AssertMsg(pHostCpu->uCurrentAsid >= 1 && pHostCpu->uCurrentAsid < g_uHmMaxAsid,
3112	("Cpu[%u] uCurrentAsid=%u cTlbFlushes=%u pVCpu->idLastCpu=%u pVCpu->cTlbFlushes=%u\n", pHostCpu->idCpu,
3113	pHostCpu->uCurrentAsid, pHostCpu->cTlbFlushes, pVCpu->hmr0.s.idLastCpu, pVCpu->hmr0.s.cTlbFlushes));
3114	AssertMsg(pVCpu->hmr0.s.uCurrentAsid >= 1 && pVCpu->hmr0.s.uCurrentAsid < g_uHmMaxAsid,
3115	("Cpu[%u] pVCpu->uCurrentAsid=%u\n", pHostCpu->idCpu, pVCpu->hmr0.s.uCurrentAsid));
3116
3117	/* Update VMCS with the VPID. */
3118	int rc = VMXWriteVmcs16(VMX_VMCS16_VPID, pVCpu->hmr0.s.uCurrentAsid);
3119	AssertRC(rc);
3120
3121	#undef HMVMX_SET_TAGGED_TLB_FLUSHED
3122	}
3123
3124
3125	/**
3126	* Flushes the tagged-TLB entries for EPT CPUs as necessary.
3127	*
3128	* @param pHostCpu The HM physical-CPU structure.
3129	* @param pVCpu The cross context virtual CPU structure.
3130	* @param pVmcsInfo The VMCS info. object.
3131	*
3132	* @remarks Called with interrupts disabled.
3133	*/
3134	static void hmR0VmxFlushTaggedTlbEpt(PHMPHYSCPU pHostCpu, PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
3135	{
3136	AssertPtr(pVCpu);
3137	AssertPtr(pHostCpu);
3138	Assert(pHostCpu->idCpu != NIL_RTCPUID);
3139	AssertMsg(pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging, ("hmR0VmxFlushTaggedTlbEpt cannot be invoked without NestedPaging."));
3140	AssertMsg(!pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fVpid, ("hmR0VmxFlushTaggedTlbEpt cannot be invoked with VPID."));
3141
3142	/*
3143	* Force a TLB flush for the first world-switch if the current CPU differs from the one we ran on last.
3144	* A change in the TLB flush count implies the host CPU is online after a suspend/resume.
3145	*/
3146	if ( pVCpu->hmr0.s.idLastCpu != pHostCpu->idCpu
3147	\|\| pVCpu->hmr0.s.cTlbFlushes != pHostCpu->cTlbFlushes)
3148	{
3149	pVCpu->hmr0.s.fForceTLBFlush = true;
3150	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
3151	}
3152
3153	/* Check for explicit TLB flushes. */
3154	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
3155	{
3156	pVCpu->hmr0.s.fForceTLBFlush = true;
3157	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
3158	}
3159
3160	/* Check for TLB flushes while switching to/from a nested-guest. */
3161	if (pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb)
3162	{
3163	pVCpu->hmr0.s.fForceTLBFlush = true;
3164	pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb = false;
3165	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbNstGst);
3166	}
3167
3168	pVCpu->hmr0.s.idLastCpu = pHostCpu->idCpu;
3169	pVCpu->hmr0.s.cTlbFlushes = pHostCpu->cTlbFlushes;
3170
3171	if (pVCpu->hmr0.s.fForceTLBFlush)
3172	{
3173	hmR0VmxFlushEpt(pVCpu, pVmcsInfo, pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.enmTlbFlushEpt);
3174	pVCpu->hmr0.s.fForceTLBFlush = false;
3175	}
3176	}
3177
3178
3179	/**
3180	* Flushes the tagged-TLB entries for VPID CPUs as necessary.
3181	*
3182	* @param pHostCpu The HM physical-CPU structure.
3183	* @param pVCpu The cross context virtual CPU structure.
3184	*
3185	* @remarks Called with interrupts disabled.
3186	*/
3187	static void hmR0VmxFlushTaggedTlbVpid(PHMPHYSCPU pHostCpu, PVMCPUCC pVCpu)
3188	{
3189	AssertPtr(pVCpu);
3190	AssertPtr(pHostCpu);
3191	Assert(pHostCpu->idCpu != NIL_RTCPUID);
3192	AssertMsg(pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fVpid, ("hmR0VmxFlushTlbVpid cannot be invoked without VPID."));
3193	AssertMsg(!pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging, ("hmR0VmxFlushTlbVpid cannot be invoked with NestedPaging"));
3194
3195	/*
3196	* Force a TLB flush for the first world switch if the current CPU differs from the one we
3197	* ran on last. If the TLB flush count changed, another VM (VCPU rather) has hit the ASID
3198	* limit while flushing the TLB or the host CPU is online after a suspend/resume, so we
3199	* cannot reuse the current ASID anymore.
3200	*/
3201	if ( pVCpu->hmr0.s.idLastCpu != pHostCpu->idCpu
3202	\|\| pVCpu->hmr0.s.cTlbFlushes != pHostCpu->cTlbFlushes)
3203	{
3204	pVCpu->hmr0.s.fForceTLBFlush = true;
3205	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
3206	}
3207
3208	/* Check for explicit TLB flushes. */
3209	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
3210	{
3211	/*
3212	* If we ever support VPID flush combinations other than ALL or SINGLE-context (see
3213	* hmR0VmxSetupTaggedTlb()) we would need to explicitly flush in this case (add an
3214	* fExplicitFlush = true here and change the pHostCpu->fFlushAsidBeforeUse check below to
3215	* include fExplicitFlush's too) - an obscure corner case.
3216	*/
3217	pVCpu->hmr0.s.fForceTLBFlush = true;
3218	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
3219	}
3220
3221	/* Check for TLB flushes while switching to/from a nested-guest. */
3222	if (pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb)
3223	{
3224	pVCpu->hmr0.s.fForceTLBFlush = true;
3225	pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb = false;
3226	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbNstGst);
3227	}
3228
3229	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3230	pVCpu->hmr0.s.idLastCpu = pHostCpu->idCpu;
3231	if (pVCpu->hmr0.s.fForceTLBFlush)
3232	{
3233	++pHostCpu->uCurrentAsid;
3234	if (pHostCpu->uCurrentAsid >= g_uHmMaxAsid)
3235	{
3236	pHostCpu->uCurrentAsid = 1; /* Wraparound to 1; host uses 0 */
3237	pHostCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new VPID. */
3238	pHostCpu->fFlushAsidBeforeUse = true; /* All VCPUs that run on this host CPU must flush their new VPID before use. */
3239	}
3240
3241	pVCpu->hmr0.s.fForceTLBFlush = false;
3242	pVCpu->hmr0.s.cTlbFlushes = pHostCpu->cTlbFlushes;
3243	pVCpu->hmr0.s.uCurrentAsid = pHostCpu->uCurrentAsid;
3244	if (pHostCpu->fFlushAsidBeforeUse)
3245	{
3246	if (pVM->hmr0.s.vmx.enmTlbFlushVpid == VMXTLBFLUSHVPID_SINGLE_CONTEXT)
3247	hmR0VmxFlushVpid(pVCpu, VMXTLBFLUSHVPID_SINGLE_CONTEXT, 0 /* GCPtr */);
3248	else if (pVM->hmr0.s.vmx.enmTlbFlushVpid == VMXTLBFLUSHVPID_ALL_CONTEXTS)
3249	{
3250	hmR0VmxFlushVpid(pVCpu, VMXTLBFLUSHVPID_ALL_CONTEXTS, 0 /* GCPtr */);
3251	pHostCpu->fFlushAsidBeforeUse = false;
3252	}
3253	else
3254	{
3255	/* hmR0VmxSetupTaggedTlb() ensures we never get here. Paranoia. */
3256	AssertMsgFailed(("Unsupported VPID-flush context type.\n"));
3257	}
3258	}
3259	}
3260
3261	AssertMsg(pVCpu->hmr0.s.cTlbFlushes == pHostCpu->cTlbFlushes,
3262	("Flush count mismatch for cpu %d (%u vs %u)\n", pHostCpu->idCpu, pVCpu->hmr0.s.cTlbFlushes, pHostCpu->cTlbFlushes));
3263	AssertMsg(pHostCpu->uCurrentAsid >= 1 && pHostCpu->uCurrentAsid < g_uHmMaxAsid,
3264	("Cpu[%u] uCurrentAsid=%u cTlbFlushes=%u pVCpu->idLastCpu=%u pVCpu->cTlbFlushes=%u\n", pHostCpu->idCpu,
3265	pHostCpu->uCurrentAsid, pHostCpu->cTlbFlushes, pVCpu->hmr0.s.idLastCpu, pVCpu->hmr0.s.cTlbFlushes));
3266	AssertMsg(pVCpu->hmr0.s.uCurrentAsid >= 1 && pVCpu->hmr0.s.uCurrentAsid < g_uHmMaxAsid,
3267	("Cpu[%u] pVCpu->uCurrentAsid=%u\n", pHostCpu->idCpu, pVCpu->hmr0.s.uCurrentAsid));
3268
3269	int rc = VMXWriteVmcs16(VMX_VMCS16_VPID, pVCpu->hmr0.s.uCurrentAsid);
3270	AssertRC(rc);
3271	}
3272
3273
3274	/**
3275	* Flushes the guest TLB entry based on CPU capabilities.
3276	*
3277	* @param pHostCpu The HM physical-CPU structure.
3278	* @param pVCpu The cross context virtual CPU structure.
3279	* @param pVmcsInfo The VMCS info. object.
3280	*
3281	* @remarks Called with interrupts disabled.
3282	*/
3283	static void hmR0VmxFlushTaggedTlb(PHMPHYSCPU pHostCpu, PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
3284	{
3285	#ifdef HMVMX_ALWAYS_FLUSH_TLB
3286	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
3287	#endif
3288	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3289	switch (pVM->hmr0.s.vmx.enmTlbFlushType)
3290	{
3291	case VMXTLBFLUSHTYPE_EPT_VPID: hmR0VmxFlushTaggedTlbBoth(pHostCpu, pVCpu, pVmcsInfo); break;
3292	case VMXTLBFLUSHTYPE_EPT: hmR0VmxFlushTaggedTlbEpt(pHostCpu, pVCpu, pVmcsInfo); break;
3293	case VMXTLBFLUSHTYPE_VPID: hmR0VmxFlushTaggedTlbVpid(pHostCpu, pVCpu); break;
3294	case VMXTLBFLUSHTYPE_NONE: hmR0VmxFlushTaggedTlbNone(pHostCpu, pVCpu); break;
3295	default:
3296	AssertMsgFailed(("Invalid flush-tag function identifier\n"));
3297	break;
3298	}
3299	/* Don't assert that VMCPU_FF_TLB_FLUSH should no longer be pending. It can be set by other EMTs. */
3300	}
3301
3302
3303	/**
3304	* Sets up the appropriate tagged TLB-flush level and handler for flushing guest
3305	* TLB entries from the host TLB before VM-entry.
3306	*
3307	* @returns VBox status code.
3308	* @param pVM The cross context VM structure.
3309	*/
3310	static int hmR0VmxSetupTaggedTlb(PVMCC pVM)
3311	{
3312	/*
3313	* Determine optimal flush type for nested paging.
3314	* We cannot ignore EPT if no suitable flush-types is supported by the CPU as we've already setup
3315	* unrestricted guest execution (see hmR3InitFinalizeR0()).
3316	*/
3317	if (pVM->hmr0.s.fNestedPaging)
3318	{
3319	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVEPT)
3320	{
3321	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVEPT_SINGLE_CONTEXT)
3322	pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_SINGLE_CONTEXT;
3323	else if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVEPT_ALL_CONTEXTS)
3324	pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_ALL_CONTEXTS;
3325	else
3326	{
3327	/* Shouldn't happen. EPT is supported but no suitable flush-types supported. */
3328	pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_NOT_SUPPORTED;
3329	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_EPT_FLUSH_TYPE_UNSUPPORTED;
3330	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3331	}
3332
3333	/* Make sure the write-back cacheable memory type for EPT is supported. */
3334	if (RT_UNLIKELY(!(g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_EMT_WB)))
3335	{
3336	pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_NOT_SUPPORTED;
3337	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_EPT_MEM_TYPE_NOT_WB;
3338	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3339	}
3340
3341	/* EPT requires a page-walk length of 4. */
3342	if (RT_UNLIKELY(!(g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_PAGE_WALK_LENGTH_4)))
3343	{
3344	pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_NOT_SUPPORTED;
3345	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_EPT_PAGE_WALK_LENGTH_UNSUPPORTED;
3346	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3347	}
3348	}
3349	else
3350	{
3351	/* Shouldn't happen. EPT is supported but INVEPT instruction is not supported. */
3352	pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_NOT_SUPPORTED;
3353	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_EPT_INVEPT_UNAVAILABLE;
3354	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3355	}
3356	}
3357
3358	/*
3359	* Determine optimal flush type for VPID.
3360	*/
3361	if (pVM->hmr0.s.vmx.fVpid)
3362	{
3363	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVVPID)
3364	{
3365	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_SINGLE_CONTEXT)
3366	pVM->hmr0.s.vmx.enmTlbFlushVpid = VMXTLBFLUSHVPID_SINGLE_CONTEXT;
3367	else if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_ALL_CONTEXTS)
3368	pVM->hmr0.s.vmx.enmTlbFlushVpid = VMXTLBFLUSHVPID_ALL_CONTEXTS;
3369	else
3370	{
3371	/* Neither SINGLE nor ALL-context flush types for VPID is supported by the CPU. Ignore VPID capability. */
3372	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_INDIV_ADDR)
3373	LogRelFunc(("Only INDIV_ADDR supported. Ignoring VPID.\n"));
3374	if (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_SINGLE_CONTEXT_RETAIN_GLOBALS)
3375	LogRelFunc(("Only SINGLE_CONTEXT_RETAIN_GLOBALS supported. Ignoring VPID.\n"));
3376	pVM->hmr0.s.vmx.enmTlbFlushVpid = VMXTLBFLUSHVPID_NOT_SUPPORTED;
3377	pVM->hmr0.s.vmx.fVpid = false;
3378	}
3379	}
3380	else
3381	{
3382	/* Shouldn't happen. VPID is supported but INVVPID is not supported by the CPU. Ignore VPID capability. */
3383	Log4Func(("VPID supported without INVEPT support. Ignoring VPID.\n"));
3384	pVM->hmr0.s.vmx.enmTlbFlushVpid = VMXTLBFLUSHVPID_NOT_SUPPORTED;
3385	pVM->hmr0.s.vmx.fVpid = false;
3386	}
3387	}
3388
3389	/*
3390	* Setup the handler for flushing tagged-TLBs.
3391	*/
3392	if (pVM->hmr0.s.fNestedPaging && pVM->hmr0.s.vmx.fVpid)
3393	pVM->hmr0.s.vmx.enmTlbFlushType = VMXTLBFLUSHTYPE_EPT_VPID;
3394	else if (pVM->hmr0.s.fNestedPaging)
3395	pVM->hmr0.s.vmx.enmTlbFlushType = VMXTLBFLUSHTYPE_EPT;
3396	else if (pVM->hmr0.s.vmx.fVpid)
3397	pVM->hmr0.s.vmx.enmTlbFlushType = VMXTLBFLUSHTYPE_VPID;
3398	else
3399	pVM->hmr0.s.vmx.enmTlbFlushType = VMXTLBFLUSHTYPE_NONE;
3400
3401
3402	/*
3403	* Copy out the result to ring-3.
3404	*/
3405	pVM->hm.s.ForR3.vmx.fVpid = pVM->hmr0.s.vmx.fVpid;
3406	pVM->hm.s.ForR3.vmx.enmTlbFlushType = pVM->hmr0.s.vmx.enmTlbFlushType;
3407	pVM->hm.s.ForR3.vmx.enmTlbFlushEpt = pVM->hmr0.s.vmx.enmTlbFlushEpt;
3408	pVM->hm.s.ForR3.vmx.enmTlbFlushVpid = pVM->hmr0.s.vmx.enmTlbFlushVpid;
3409	return VINF_SUCCESS;
3410	}
3411
3412
3413	/**
3414	* Sets up the LBR MSR ranges based on the host CPU.
3415	*
3416	* @returns VBox status code.
3417	* @param pVM The cross context VM structure.
3418	*/
3419	static int hmR0VmxSetupLbrMsrRange(PVMCC pVM)
3420	{
3421	Assert(pVM->hmr0.s.vmx.fLbr);
3422	uint32_t idLbrFromIpMsrFirst;
3423	uint32_t idLbrFromIpMsrLast;
3424	uint32_t idLbrToIpMsrFirst;
3425	uint32_t idLbrToIpMsrLast;
3426	uint32_t idLbrTosMsr;
3427
3428	/*
3429	* Determine the LBR MSRs supported for this host CPU family and model.
3430	*
3431	* See Intel spec. 17.4.8 "LBR Stack".
3432	* See Intel "Model-Specific Registers" spec.
3433	*/
3434	uint32_t const uFamilyModel = (pVM->cpum.ro.HostFeatures.uFamily << 8)
3435	\| pVM->cpum.ro.HostFeatures.uModel;
3436	switch (uFamilyModel)
3437	{
3438	case 0x0f01: case 0x0f02:
3439	idLbrFromIpMsrFirst = MSR_P4_LASTBRANCH_0;
3440	idLbrFromIpMsrLast = MSR_P4_LASTBRANCH_3;
3441	idLbrToIpMsrFirst = 0x0;
3442	idLbrToIpMsrLast = 0x0;
3443	idLbrTosMsr = MSR_P4_LASTBRANCH_TOS;
3444	break;
3445
3446	case 0x065c: case 0x065f: case 0x064e: case 0x065e: case 0x068e:
3447	case 0x069e: case 0x0655: case 0x0666: case 0x067a: case 0x0667:
3448	case 0x066a: case 0x066c: case 0x067d: case 0x067e:
3449	idLbrFromIpMsrFirst = MSR_LASTBRANCH_0_FROM_IP;
3450	idLbrFromIpMsrLast = MSR_LASTBRANCH_31_FROM_IP;
3451	idLbrToIpMsrFirst = MSR_LASTBRANCH_0_TO_IP;
3452	idLbrToIpMsrLast = MSR_LASTBRANCH_31_TO_IP;
3453	idLbrTosMsr = MSR_LASTBRANCH_TOS;
3454	break;
3455
3456	case 0x063d: case 0x0647: case 0x064f: case 0x0656: case 0x063c:
3457	case 0x0645: case 0x0646: case 0x063f: case 0x062a: case 0x062d:
3458	case 0x063a: case 0x063e: case 0x061a: case 0x061e: case 0x061f:
3459	case 0x062e: case 0x0625: case 0x062c: case 0x062f:
3460	idLbrFromIpMsrFirst = MSR_LASTBRANCH_0_FROM_IP;
3461	idLbrFromIpMsrLast = MSR_LASTBRANCH_15_FROM_IP;
3462	idLbrToIpMsrFirst = MSR_LASTBRANCH_0_TO_IP;
3463	idLbrToIpMsrLast = MSR_LASTBRANCH_15_TO_IP;
3464	idLbrTosMsr = MSR_LASTBRANCH_TOS;
3465	break;
3466
3467	case 0x0617: case 0x061d: case 0x060f:
3468	idLbrFromIpMsrFirst = MSR_CORE2_LASTBRANCH_0_FROM_IP;
3469	idLbrFromIpMsrLast = MSR_CORE2_LASTBRANCH_3_FROM_IP;
3470	idLbrToIpMsrFirst = MSR_CORE2_LASTBRANCH_0_TO_IP;
3471	idLbrToIpMsrLast = MSR_CORE2_LASTBRANCH_3_TO_IP;
3472	idLbrTosMsr = MSR_CORE2_LASTBRANCH_TOS;
3473	break;
3474
3475	/* Atom and related microarchitectures we don't care about:
3476	case 0x0637: case 0x064a: case 0x064c: case 0x064d: case 0x065a:
3477	case 0x065d: case 0x061c: case 0x0626: case 0x0627: case 0x0635:
3478	case 0x0636: */
3479	/* All other CPUs: */
3480	default:
3481	{
3482	LogRelFunc(("Could not determine LBR stack size for the CPU model %#x\n", uFamilyModel));
3483	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_LBR_STACK_SIZE_UNKNOWN;
3484	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3485	}
3486	}
3487
3488	/*
3489	* Validate.
3490	*/
3491	uint32_t const cLbrStack = idLbrFromIpMsrLast - idLbrFromIpMsrFirst + 1;
3492	PCVMCPU pVCpu0 = VMCC_GET_CPU_0(pVM);
3493	AssertCompile( RT_ELEMENTS(pVCpu0->hm.s.vmx.VmcsInfo.au64LbrFromIpMsr)
3494	== RT_ELEMENTS(pVCpu0->hm.s.vmx.VmcsInfo.au64LbrToIpMsr));
3495	if (cLbrStack > RT_ELEMENTS(pVCpu0->hm.s.vmx.VmcsInfo.au64LbrFromIpMsr))
3496	{
3497	LogRelFunc(("LBR stack size of the CPU (%u) exceeds our buffer size\n", cLbrStack));
3498	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_LBR_STACK_SIZE_OVERFLOW;
3499	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3500	}
3501	NOREF(pVCpu0);
3502
3503	/*
3504	* Update the LBR info. to the VM struct. for use later.
3505	*/
3506	pVM->hmr0.s.vmx.idLbrTosMsr = idLbrTosMsr;
3507
3508	pVM->hm.s.ForR3.vmx.idLbrFromIpMsrFirst = pVM->hmr0.s.vmx.idLbrFromIpMsrFirst = idLbrFromIpMsrFirst;
3509	pVM->hm.s.ForR3.vmx.idLbrFromIpMsrLast = pVM->hmr0.s.vmx.idLbrFromIpMsrLast = idLbrFromIpMsrLast;
3510
3511	pVM->hm.s.ForR3.vmx.idLbrToIpMsrFirst = pVM->hmr0.s.vmx.idLbrToIpMsrFirst = idLbrToIpMsrFirst;
3512	pVM->hm.s.ForR3.vmx.idLbrToIpMsrLast = pVM->hmr0.s.vmx.idLbrToIpMsrLast = idLbrToIpMsrLast;
3513	return VINF_SUCCESS;
3514	}
3515
3516
3517	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
3518	/**
3519	* Sets up the shadow VMCS fields arrays.
3520	*
3521	* This function builds arrays of VMCS fields to sync the shadow VMCS later while
3522	* executing the guest.
3523	*
3524	* @returns VBox status code.
3525	* @param pVM The cross context VM structure.
3526	*/
3527	static int hmR0VmxSetupShadowVmcsFieldsArrays(PVMCC pVM)
3528	{
3529	/*
3530	* Paranoia. Ensure we haven't exposed the VMWRITE-All VMX feature to the guest
3531	* when the host does not support it.
3532	*/
3533	bool const fGstVmwriteAll = pVM->cpum.ro.GuestFeatures.fVmxVmwriteAll;
3534	if ( !fGstVmwriteAll
3535	\|\| (g_HmMsrs.u.vmx.u64Misc & VMX_MISC_VMWRITE_ALL))
3536	{ /* likely. */ }
3537	else
3538	{
3539	LogRelFunc(("VMX VMWRITE-All feature exposed to the guest but host CPU does not support it!\n"));
3540	VMCC_GET_CPU_0(pVM)->hm.s.u32HMError = VMX_UFC_GST_HOST_VMWRITE_ALL;
3541	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3542	}
3543
3544	uint32_t const cVmcsFields = RT_ELEMENTS(g_aVmcsFields);
3545	uint32_t cRwFields = 0;
3546	uint32_t cRoFields = 0;
3547	for (uint32_t i = 0; i < cVmcsFields; i++)
3548	{
3549	VMXVMCSFIELD VmcsField;
3550	VmcsField.u = g_aVmcsFields[i];
3551
3552	/*
3553	* We will be writing "FULL" (64-bit) fields while syncing the shadow VMCS.
3554	* Therefore, "HIGH" (32-bit portion of 64-bit) fields must not be included
3555	* in the shadow VMCS fields array as they would be redundant.
3556	*
3557	* If the VMCS field depends on a CPU feature that is not exposed to the guest,
3558	* we must not include it in the shadow VMCS fields array. Guests attempting to
3559	* VMREAD/VMWRITE such VMCS fields would cause a VM-exit and we shall emulate
3560	* the required behavior.
3561	*/
3562	if ( VmcsField.n.fAccessType == VMX_VMCSFIELD_ACCESS_FULL
3563	&& CPUMIsGuestVmxVmcsFieldValid(pVM, VmcsField.u))
3564	{
3565	/*
3566	* Read-only fields are placed in a separate array so that while syncing shadow
3567	* VMCS fields later (which is more performance critical) we can avoid branches.
3568	*
3569	* However, if the guest can write to all fields (including read-only fields),
3570	* we treat it a as read/write field. Otherwise, writing to these fields would
3571	* cause a VMWRITE instruction error while syncing the shadow VMCS.
3572	*/
3573	if ( fGstVmwriteAll
3574	\|\| !VMXIsVmcsFieldReadOnly(VmcsField.u))
3575	pVM->hmr0.s.vmx.paShadowVmcsFields[cRwFields++] = VmcsField.u;
3576	else
3577	pVM->hmr0.s.vmx.paShadowVmcsRoFields[cRoFields++] = VmcsField.u;
3578	}
3579	}
3580
3581	/* Update the counts. */
3582	pVM->hmr0.s.vmx.cShadowVmcsFields = cRwFields;
3583	pVM->hmr0.s.vmx.cShadowVmcsRoFields = cRoFields;
3584	return VINF_SUCCESS;
3585	}
3586
3587
3588	/**
3589	* Sets up the VMREAD and VMWRITE bitmaps.
3590	*
3591	* @param pVM The cross context VM structure.
3592	*/
3593	static void hmR0VmxSetupVmreadVmwriteBitmaps(PVMCC pVM)
3594	{
3595	/*
3596	* By default, ensure guest attempts to access any VMCS fields cause VM-exits.
3597	*/
3598	uint32_t const cbBitmap = X86_PAGE_4K_SIZE;
3599	uint8_t pbVmreadBitmap = (uint8_t )pVM->hmr0.s.vmx.pvVmreadBitmap;
3600	uint8_t pbVmwriteBitmap = (uint8_t )pVM->hmr0.s.vmx.pvVmwriteBitmap;
3601	ASMMemFill32(pbVmreadBitmap, cbBitmap, UINT32_C(0xffffffff));
3602	ASMMemFill32(pbVmwriteBitmap, cbBitmap, UINT32_C(0xffffffff));
3603
3604	/*
3605	* Skip intercepting VMREAD/VMWRITE to guest read/write fields in the
3606	* VMREAD and VMWRITE bitmaps.
3607	*/
3608	{
3609	uint32_t const *paShadowVmcsFields = pVM->hmr0.s.vmx.paShadowVmcsFields;
3610	uint32_t const cShadowVmcsFields = pVM->hmr0.s.vmx.cShadowVmcsFields;
3611	for (uint32_t i = 0; i < cShadowVmcsFields; i++)
3612	{
3613	uint32_t const uVmcsField = paShadowVmcsFields[i];
3614	Assert(!(uVmcsField & VMX_VMCSFIELD_RSVD_MASK));
3615	Assert(uVmcsField >> 3 < cbBitmap);
3616	ASMBitClear(pbVmreadBitmap + (uVmcsField >> 3), uVmcsField & 7);
3617	ASMBitClear(pbVmwriteBitmap + (uVmcsField >> 3), uVmcsField & 7);
3618	}
3619	}
3620
3621	/*
3622	* Skip intercepting VMREAD for guest read-only fields in the VMREAD bitmap
3623	* if the host supports VMWRITE to all supported VMCS fields.
3624	*/
3625	if (g_HmMsrs.u.vmx.u64Misc & VMX_MISC_VMWRITE_ALL)
3626	{
3627	uint32_t const *paShadowVmcsRoFields = pVM->hmr0.s.vmx.paShadowVmcsRoFields;
3628	uint32_t const cShadowVmcsRoFields = pVM->hmr0.s.vmx.cShadowVmcsRoFields;
3629	for (uint32_t i = 0; i < cShadowVmcsRoFields; i++)
3630	{
3631	uint32_t const uVmcsField = paShadowVmcsRoFields[i];
3632	Assert(!(uVmcsField & VMX_VMCSFIELD_RSVD_MASK));
3633	Assert(uVmcsField >> 3 < cbBitmap);
3634	ASMBitClear(pbVmreadBitmap + (uVmcsField >> 3), uVmcsField & 7);
3635	}
3636	}
3637	}
3638	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
3639
3640
3641	/**
3642	* Sets up the virtual-APIC page address for the VMCS.
3643	*
3644	* @param pVmcsInfo The VMCS info. object.
3645	*/
3646	DECLINLINE(void) hmR0VmxSetupVmcsVirtApicAddr(PCVMXVMCSINFO pVmcsInfo)
3647	{
3648	RTHCPHYS const HCPhysVirtApic = pVmcsInfo->HCPhysVirtApic;
3649	Assert(HCPhysVirtApic != NIL_RTHCPHYS);
3650	Assert(!(HCPhysVirtApic & 0xfff)); /* Bits 11:0 MBZ. */
3651	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_VIRT_APIC_PAGEADDR_FULL, HCPhysVirtApic);
3652	AssertRC(rc);
3653	}
3654
3655
3656	/**
3657	* Sets up the MSR-bitmap address for the VMCS.
3658	*
3659	* @param pVmcsInfo The VMCS info. object.
3660	*/
3661	DECLINLINE(void) hmR0VmxSetupVmcsMsrBitmapAddr(PCVMXVMCSINFO pVmcsInfo)
3662	{
3663	RTHCPHYS const HCPhysMsrBitmap = pVmcsInfo->HCPhysMsrBitmap;
3664	Assert(HCPhysMsrBitmap != NIL_RTHCPHYS);
3665	Assert(!(HCPhysMsrBitmap & 0xfff)); /* Bits 11:0 MBZ. */
3666	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_MSR_BITMAP_FULL, HCPhysMsrBitmap);
3667	AssertRC(rc);
3668	}
3669
3670
3671	/**
3672	* Sets up the APIC-access page address for the VMCS.
3673	*
3674	* @param pVCpu The cross context virtual CPU structure.
3675	*/
3676	DECLINLINE(void) hmR0VmxSetupVmcsApicAccessAddr(PVMCPUCC pVCpu)
3677	{
3678	RTHCPHYS const HCPhysApicAccess = pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.HCPhysApicAccess;
3679	Assert(HCPhysApicAccess != NIL_RTHCPHYS);
3680	Assert(!(HCPhysApicAccess & 0xfff)); /* Bits 11:0 MBZ. */
3681	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_APIC_ACCESSADDR_FULL, HCPhysApicAccess);
3682	AssertRC(rc);
3683	}
3684
3685	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
3686
3687	/**
3688	* Sets up the VMREAD bitmap address for the VMCS.
3689	*
3690	* @param pVCpu The cross context virtual CPU structure.
3691	*/
3692	DECLINLINE(void) hmR0VmxSetupVmcsVmreadBitmapAddr(PVMCPUCC pVCpu)
3693	{
3694	RTHCPHYS const HCPhysVmreadBitmap = pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.HCPhysVmreadBitmap;
3695	Assert(HCPhysVmreadBitmap != NIL_RTHCPHYS);
3696	Assert(!(HCPhysVmreadBitmap & 0xfff)); /* Bits 11:0 MBZ. */
3697	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_VMREAD_BITMAP_FULL, HCPhysVmreadBitmap);
3698	AssertRC(rc);
3699	}
3700
3701
3702	/**
3703	* Sets up the VMWRITE bitmap address for the VMCS.
3704	*
3705	* @param pVCpu The cross context virtual CPU structure.
3706	*/
3707	DECLINLINE(void) hmR0VmxSetupVmcsVmwriteBitmapAddr(PVMCPUCC pVCpu)
3708	{
3709	RTHCPHYS const HCPhysVmwriteBitmap = pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.HCPhysVmwriteBitmap;
3710	Assert(HCPhysVmwriteBitmap != NIL_RTHCPHYS);
3711	Assert(!(HCPhysVmwriteBitmap & 0xfff)); /* Bits 11:0 MBZ. */
3712	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_VMWRITE_BITMAP_FULL, HCPhysVmwriteBitmap);
3713	AssertRC(rc);
3714	}
3715
3716	#endif
3717
3718	/**
3719	* Sets up the VM-entry MSR load, VM-exit MSR-store and VM-exit MSR-load addresses
3720	* in the VMCS.
3721	*
3722	* @returns VBox status code.
3723	* @param pVmcsInfo The VMCS info. object.
3724	*/
3725	DECLINLINE(int) hmR0VmxSetupVmcsAutoLoadStoreMsrAddrs(PVMXVMCSINFO pVmcsInfo)
3726	{
3727	RTHCPHYS const HCPhysGuestMsrLoad = pVmcsInfo->HCPhysGuestMsrLoad;
3728	Assert(HCPhysGuestMsrLoad != NIL_RTHCPHYS);
3729	Assert(!(HCPhysGuestMsrLoad & 0xf)); /* Bits 3:0 MBZ. */
3730
3731	RTHCPHYS const HCPhysGuestMsrStore = pVmcsInfo->HCPhysGuestMsrStore;
3732	Assert(HCPhysGuestMsrStore != NIL_RTHCPHYS);
3733	Assert(!(HCPhysGuestMsrStore & 0xf)); /* Bits 3:0 MBZ. */
3734
3735	RTHCPHYS const HCPhysHostMsrLoad = pVmcsInfo->HCPhysHostMsrLoad;
3736	Assert(HCPhysHostMsrLoad != NIL_RTHCPHYS);
3737	Assert(!(HCPhysHostMsrLoad & 0xf)); /* Bits 3:0 MBZ. */
3738
3739	int rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_ENTRY_MSR_LOAD_FULL, HCPhysGuestMsrLoad); AssertRC(rc);
3740	rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_EXIT_MSR_STORE_FULL, HCPhysGuestMsrStore); AssertRC(rc);
3741	rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_EXIT_MSR_LOAD_FULL, HCPhysHostMsrLoad); AssertRC(rc);
3742	return VINF_SUCCESS;
3743	}
3744
3745
3746	/**
3747	* Sets up MSR permissions in the MSR bitmap of a VMCS info. object.
3748	*
3749	* @param pVCpu The cross context virtual CPU structure.
3750	* @param pVmcsInfo The VMCS info. object.
3751	*/
3752	static void hmR0VmxSetupVmcsMsrPermissions(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
3753	{
3754	Assert(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS);
3755
3756	/*
3757	* By default, ensure guest attempts to access any MSR cause VM-exits.
3758	* This shall later be relaxed for specific MSRs as necessary.
3759	*
3760	* Note: For nested-guests, the entire bitmap will be merged prior to
3761	* executing the nested-guest using hardware-assisted VMX and hence there
3762	* is no need to perform this operation. See hmR0VmxMergeMsrBitmapNested.
3763	*/
3764	Assert(pVmcsInfo->pvMsrBitmap);
3765	ASMMemFill32(pVmcsInfo->pvMsrBitmap, X86_PAGE_4K_SIZE, UINT32_C(0xffffffff));
3766
3767	/*
3768	* The guest can access the following MSRs (read, write) without causing
3769	* VM-exits; they are loaded/stored automatically using fields in the VMCS.
3770	*/
3771	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3772	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_IA32_SYSENTER_CS, VMXMSRPM_ALLOW_RD_WR);
3773	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_IA32_SYSENTER_ESP, VMXMSRPM_ALLOW_RD_WR);
3774	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_IA32_SYSENTER_EIP, VMXMSRPM_ALLOW_RD_WR);
3775	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_K8_GS_BASE, VMXMSRPM_ALLOW_RD_WR);
3776	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_K8_FS_BASE, VMXMSRPM_ALLOW_RD_WR);
3777
3778	/*
3779	* The IA32_PRED_CMD and IA32_FLUSH_CMD MSRs are write-only and has no state
3780	* associated with then. We never need to intercept access (writes need to be
3781	* executed without causing a VM-exit, reads will #GP fault anyway).
3782	*
3783	* The IA32_SPEC_CTRL MSR is read/write and has state. We allow the guest to
3784	* read/write them. We swap the guest/host MSR value using the
3785	* auto-load/store MSR area.
3786	*/
3787	if (pVM->cpum.ro.GuestFeatures.fIbpb)
3788	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_IA32_PRED_CMD, VMXMSRPM_ALLOW_RD_WR);
3789	if (pVM->cpum.ro.GuestFeatures.fFlushCmd)
3790	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_IA32_FLUSH_CMD, VMXMSRPM_ALLOW_RD_WR);
3791	if (pVM->cpum.ro.GuestFeatures.fIbrs)
3792	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_IA32_SPEC_CTRL, VMXMSRPM_ALLOW_RD_WR);
3793
3794	/*
3795	* Allow full read/write access for the following MSRs (mandatory for VT-x)
3796	* required for 64-bit guests.
3797	*/
3798	if (pVM->hmr0.s.fAllow64BitGuests)
3799	{
3800	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_K8_LSTAR, VMXMSRPM_ALLOW_RD_WR);
3801	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_K6_STAR, VMXMSRPM_ALLOW_RD_WR);
3802	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_K8_SF_MASK, VMXMSRPM_ALLOW_RD_WR);
3803	hmR0VmxSetMsrPermission(pVCpu, pVmcsInfo, false, MSR_K8_KERNEL_GS_BASE, VMXMSRPM_ALLOW_RD_WR);
3804	}
3805
3806	/*
3807	* IA32_EFER MSR is always intercepted, see @bugref{9180#c37}.
3808	*/
3809	#ifdef VBOX_STRICT
3810	Assert(pVmcsInfo->pvMsrBitmap);
3811	uint32_t const fMsrpmEfer = CPUMGetVmxMsrPermission(pVmcsInfo->pvMsrBitmap, MSR_K6_EFER);
3812	Assert(fMsrpmEfer == VMXMSRPM_EXIT_RD_WR);
3813	#endif
3814	}
3815
3816
3817	/**
3818	* Sets up pin-based VM-execution controls in the VMCS.
3819	*
3820	* @returns VBox status code.
3821	* @param pVCpu The cross context virtual CPU structure.
3822	* @param pVmcsInfo The VMCS info. object.
3823	*/
3824	static int hmR0VmxSetupVmcsPinCtls(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
3825	{
3826	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3827	uint32_t fVal = g_HmMsrs.u.vmx.PinCtls.n.allowed0; /* Bits set here must always be set. */
3828	uint32_t const fZap = g_HmMsrs.u.vmx.PinCtls.n.allowed1; /* Bits cleared here must always be cleared. */
3829
3830	fVal \|= VMX_PIN_CTLS_EXT_INT_EXIT /* External interrupts cause a VM-exit. */
3831	\| VMX_PIN_CTLS_NMI_EXIT; /* Non-maskable interrupts (NMIs) cause a VM-exit. */
3832
3833	if (g_HmMsrs.u.vmx.PinCtls.n.allowed1 & VMX_PIN_CTLS_VIRT_NMI)
3834	fVal \|= VMX_PIN_CTLS_VIRT_NMI; /* Use virtual NMIs and virtual-NMI blocking features. */
3835
3836	/* Enable the VMX-preemption timer. */
3837	if (pVM->hmr0.s.vmx.fUsePreemptTimer)
3838	{
3839	Assert(g_HmMsrs.u.vmx.PinCtls.n.allowed1 & VMX_PIN_CTLS_PREEMPT_TIMER);
3840	fVal \|= VMX_PIN_CTLS_PREEMPT_TIMER;
3841	}
3842
3843	#if 0
3844	/* Enable posted-interrupt processing. */
3845	if (pVM->hm.s.fPostedIntrs)
3846	{
3847	Assert(g_HmMsrs.u.vmx.PinCtls.n.allowed1 & VMX_PIN_CTLS_POSTED_INT);
3848	Assert(g_HmMsrs.u.vmx.ExitCtls.n.allowed1 & VMX_EXIT_CTLS_ACK_EXT_INT);
3849	fVal \|= VMX_PIN_CTLS_POSTED_INT;
3850	}
3851	#endif
3852
3853	if ((fVal & fZap) != fVal)
3854	{
3855	LogRelFunc(("Invalid pin-based VM-execution controls combo! Cpu=%#RX32 fVal=%#RX32 fZap=%#RX32\n",
3856	g_HmMsrs.u.vmx.PinCtls.n.allowed0, fVal, fZap));
3857	pVCpu->hm.s.u32HMError = VMX_UFC_CTRL_PIN_EXEC;
3858	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3859	}
3860
3861	/* Commit it to the VMCS and update our cache. */
3862	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PIN_EXEC, fVal);
3863	AssertRC(rc);
3864	pVmcsInfo->u32PinCtls = fVal;
3865
3866	return VINF_SUCCESS;
3867	}
3868
3869
3870	/**
3871	* Sets up secondary processor-based VM-execution controls in the VMCS.
3872	*
3873	* @returns VBox status code.
3874	* @param pVCpu The cross context virtual CPU structure.
3875	* @param pVmcsInfo The VMCS info. object.
3876	*/
3877	static int hmR0VmxSetupVmcsProcCtls2(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
3878	{
3879	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3880	uint32_t fVal = g_HmMsrs.u.vmx.ProcCtls2.n.allowed0; /* Bits set here must be set in the VMCS. */
3881	uint32_t const fZap = g_HmMsrs.u.vmx.ProcCtls2.n.allowed1; /* Bits cleared here must be cleared in the VMCS. */
3882
3883	/* WBINVD causes a VM-exit. */
3884	if (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_WBINVD_EXIT)
3885	fVal \|= VMX_PROC_CTLS2_WBINVD_EXIT;
3886
3887	/* Enable EPT (aka nested-paging). */
3888	if (pVM->hmr0.s.fNestedPaging)
3889	fVal \|= VMX_PROC_CTLS2_EPT;
3890
3891	/* Enable the INVPCID instruction if we expose it to the guest and is supported
3892	by the hardware. Without this, guest executing INVPCID would cause a #UD. */
3893	if ( pVM->cpum.ro.GuestFeatures.fInvpcid
3894	&& (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_INVPCID))
3895	fVal \|= VMX_PROC_CTLS2_INVPCID;
3896
3897	/* Enable VPID. */
3898	if (pVM->hmr0.s.vmx.fVpid)
3899	fVal \|= VMX_PROC_CTLS2_VPID;
3900
3901	/* Enable unrestricted guest execution. */
3902	if (pVM->hmr0.s.vmx.fUnrestrictedGuest)
3903	fVal \|= VMX_PROC_CTLS2_UNRESTRICTED_GUEST;
3904
3905	#if 0
3906	if (pVM->hm.s.fVirtApicRegs)
3907	{
3908	/* Enable APIC-register virtualization. */
3909	Assert(g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_APIC_REG_VIRT);
3910	fVal \|= VMX_PROC_CTLS2_APIC_REG_VIRT;
3911
3912	/* Enable virtual-interrupt delivery. */
3913	Assert(g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_VIRT_INTR_DELIVERY);
3914	fVal \|= VMX_PROC_CTLS2_VIRT_INTR_DELIVERY;
3915	}
3916	#endif
3917
3918	/* Virtualize-APIC accesses if supported by the CPU. The virtual-APIC page is
3919	where the TPR shadow resides. */
3920	/** @todo VIRT_X2APIC support, it's mutually exclusive with this. So must be
3921	* done dynamically. */
3922	if (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
3923	{
3924	fVal \|= VMX_PROC_CTLS2_VIRT_APIC_ACCESS;
3925	hmR0VmxSetupVmcsApicAccessAddr(pVCpu);
3926	}
3927
3928	/* Enable the RDTSCP instruction if we expose it to the guest and is supported
3929	by the hardware. Without this, guest executing RDTSCP would cause a #UD. */
3930	if ( pVM->cpum.ro.GuestFeatures.fRdTscP
3931	&& (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_RDTSCP))
3932	fVal \|= VMX_PROC_CTLS2_RDTSCP;
3933
3934	/* Enable Pause-Loop exiting. */
3935	if ( (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_PAUSE_LOOP_EXIT)
3936	&& pVM->hm.s.vmx.cPleGapTicks
3937	&& pVM->hm.s.vmx.cPleWindowTicks)
3938	{
3939	fVal \|= VMX_PROC_CTLS2_PAUSE_LOOP_EXIT;
3940
3941	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PLE_GAP, pVM->hm.s.vmx.cPleGapTicks); AssertRC(rc);
3942	rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PLE_WINDOW, pVM->hm.s.vmx.cPleWindowTicks); AssertRC(rc);
3943	}
3944
3945	if ((fVal & fZap) != fVal)
3946	{
3947	LogRelFunc(("Invalid secondary processor-based VM-execution controls combo! cpu=%#RX32 fVal=%#RX32 fZap=%#RX32\n",
3948	g_HmMsrs.u.vmx.ProcCtls2.n.allowed0, fVal, fZap));
3949	pVCpu->hm.s.u32HMError = VMX_UFC_CTRL_PROC_EXEC2;
3950	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3951	}
3952
3953	/* Commit it to the VMCS and update our cache. */
3954	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, fVal);
3955	AssertRC(rc);
3956	pVmcsInfo->u32ProcCtls2 = fVal;
3957
3958	return VINF_SUCCESS;
3959	}
3960
3961
3962	/**
3963	* Sets up processor-based VM-execution controls in the VMCS.
3964	*
3965	* @returns VBox status code.
3966	* @param pVCpu The cross context virtual CPU structure.
3967	* @param pVmcsInfo The VMCS info. object.
3968	*/
3969	static int hmR0VmxSetupVmcsProcCtls(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
3970	{
3971	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
3972	uint32_t fVal = g_HmMsrs.u.vmx.ProcCtls.n.allowed0; /* Bits set here must be set in the VMCS. */
3973	uint32_t const fZap = g_HmMsrs.u.vmx.ProcCtls.n.allowed1; /* Bits cleared here must be cleared in the VMCS. */
3974
3975	fVal \|= VMX_PROC_CTLS_HLT_EXIT /* HLT causes a VM-exit. */
3976	\| VMX_PROC_CTLS_USE_TSC_OFFSETTING /* Use TSC-offsetting. */
3977	\| VMX_PROC_CTLS_MOV_DR_EXIT /* MOV DRx causes a VM-exit. */
3978	\| VMX_PROC_CTLS_UNCOND_IO_EXIT /* All IO instructions cause a VM-exit. */
3979	\| VMX_PROC_CTLS_RDPMC_EXIT /* RDPMC causes a VM-exit. */
3980	\| VMX_PROC_CTLS_MONITOR_EXIT /* MONITOR causes a VM-exit. */
3981	\| VMX_PROC_CTLS_MWAIT_EXIT; /* MWAIT causes a VM-exit. */
3982
3983	/* We toggle VMX_PROC_CTLS_MOV_DR_EXIT later, check if it's not -always- needed to be set or clear. */
3984	if ( !(g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_MOV_DR_EXIT)
3985	\|\| (g_HmMsrs.u.vmx.ProcCtls.n.allowed0 & VMX_PROC_CTLS_MOV_DR_EXIT))
3986	{
3987	pVCpu->hm.s.u32HMError = VMX_UFC_CTRL_PROC_MOV_DRX_EXIT;
3988	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
3989	}
3990
3991	/* Without nested paging, INVLPG (also affects INVPCID) and MOV CR3 instructions should cause VM-exits. */
3992	if (!pVM->hmr0.s.fNestedPaging)
3993	{
3994	Assert(!pVM->hmr0.s.vmx.fUnrestrictedGuest);
3995	fVal \|= VMX_PROC_CTLS_INVLPG_EXIT
3996	\| VMX_PROC_CTLS_CR3_LOAD_EXIT
3997	\| VMX_PROC_CTLS_CR3_STORE_EXIT;
3998	}
3999
4000	/* Use TPR shadowing if supported by the CPU. */
4001	if ( PDMHasApic(pVM)
4002	&& (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_TPR_SHADOW))
4003	{
4004	fVal \|= VMX_PROC_CTLS_USE_TPR_SHADOW; /* CR8 reads from the Virtual-APIC page. */
4005	/* CR8 writes cause a VM-exit based on TPR threshold. */
4006	Assert(!(fVal & VMX_PROC_CTLS_CR8_STORE_EXIT));
4007	Assert(!(fVal & VMX_PROC_CTLS_CR8_LOAD_EXIT));
4008	hmR0VmxSetupVmcsVirtApicAddr(pVmcsInfo);
4009	}
4010	else
4011	{
4012	/* Some 32-bit CPUs do not support CR8 load/store exiting as MOV CR8 is
4013	invalid on 32-bit Intel CPUs. Set this control only for 64-bit guests. */
4014	if (pVM->hmr0.s.fAllow64BitGuests)
4015	fVal \|= VMX_PROC_CTLS_CR8_STORE_EXIT /* CR8 reads cause a VM-exit. */
4016	\| VMX_PROC_CTLS_CR8_LOAD_EXIT; /* CR8 writes cause a VM-exit. */
4017	}
4018
4019	/* Use MSR-bitmaps if supported by the CPU. */
4020	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_MSR_BITMAPS)
4021	{
4022	fVal \|= VMX_PROC_CTLS_USE_MSR_BITMAPS;
4023	hmR0VmxSetupVmcsMsrBitmapAddr(pVmcsInfo);
4024	}
4025
4026	/* Use the secondary processor-based VM-execution controls if supported by the CPU. */
4027	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_SECONDARY_CTLS)
4028	fVal \|= VMX_PROC_CTLS_USE_SECONDARY_CTLS;
4029
4030	if ((fVal & fZap) != fVal)
4031	{
4032	LogRelFunc(("Invalid processor-based VM-execution controls combo! cpu=%#RX32 fVal=%#RX32 fZap=%#RX32\n",
4033	g_HmMsrs.u.vmx.ProcCtls.n.allowed0, fVal, fZap));
4034	pVCpu->hm.s.u32HMError = VMX_UFC_CTRL_PROC_EXEC;
4035	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
4036	}
4037
4038	/* Commit it to the VMCS and update our cache. */
4039	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, fVal);
4040	AssertRC(rc);
4041	pVmcsInfo->u32ProcCtls = fVal;
4042
4043	/* Set up MSR permissions that don't change through the lifetime of the VM. */
4044	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
4045	hmR0VmxSetupVmcsMsrPermissions(pVCpu, pVmcsInfo);
4046
4047	/* Set up secondary processor-based VM-execution controls if the CPU supports it. */
4048	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_SECONDARY_CTLS)
4049	return hmR0VmxSetupVmcsProcCtls2(pVCpu, pVmcsInfo);
4050
4051	/* Sanity check, should not really happen. */
4052	if (RT_LIKELY(!pVM->hmr0.s.vmx.fUnrestrictedGuest))
4053	{ /* likely */ }
4054	else
4055	{
4056	pVCpu->hm.s.u32HMError = VMX_UFC_INVALID_UX_COMBO;
4057	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
4058	}
4059
4060	/* Old CPUs without secondary processor-based VM-execution controls would end up here. */
4061	return VINF_SUCCESS;
4062	}
4063
4064
4065	/**
4066	* Sets up miscellaneous (everything other than Pin, Processor and secondary
4067	* Processor-based VM-execution) control fields in the VMCS.
4068	*
4069	* @returns VBox status code.
4070	* @param pVCpu The cross context virtual CPU structure.
4071	* @param pVmcsInfo The VMCS info. object.
4072	*/
4073	static int hmR0VmxSetupVmcsMiscCtls(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
4074	{
4075	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4076	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fUseVmcsShadowing)
4077	{
4078	hmR0VmxSetupVmcsVmreadBitmapAddr(pVCpu);
4079	hmR0VmxSetupVmcsVmwriteBitmapAddr(pVCpu);
4080	}
4081	#endif
4082
4083	Assert(pVmcsInfo->u64VmcsLinkPtr == NIL_RTHCPHYS);
4084	int rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_VMCS_LINK_PTR_FULL, NIL_RTHCPHYS);
4085	AssertRC(rc);
4086
4087	rc = hmR0VmxSetupVmcsAutoLoadStoreMsrAddrs(pVmcsInfo);
4088	if (RT_SUCCESS(rc))
4089	{
4090	uint64_t const u64Cr0Mask = hmR0VmxGetFixedCr0Mask(pVCpu);
4091	uint64_t const u64Cr4Mask = hmR0VmxGetFixedCr4Mask(pVCpu);
4092
4093	rc = VMXWriteVmcsNw(VMX_VMCS_CTRL_CR0_MASK, u64Cr0Mask); AssertRC(rc);
4094	rc = VMXWriteVmcsNw(VMX_VMCS_CTRL_CR4_MASK, u64Cr4Mask); AssertRC(rc);
4095
4096	pVmcsInfo->u64Cr0Mask = u64Cr0Mask;
4097	pVmcsInfo->u64Cr4Mask = u64Cr4Mask;
4098
4099	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fLbr)
4100	{
4101	rc = VMXWriteVmcsNw(VMX_VMCS64_GUEST_DEBUGCTL_FULL, MSR_IA32_DEBUGCTL_LBR);
4102	AssertRC(rc);
4103	}
4104	return VINF_SUCCESS;
4105	}
4106	else
4107	LogRelFunc(("Failed to initialize VMCS auto-load/store MSR addresses. rc=%Rrc\n", rc));
4108	return rc;
4109	}
4110
4111
4112	/**
4113	* Sets up the initial exception bitmap in the VMCS based on static conditions.
4114	*
4115	* We shall setup those exception intercepts that don't change during the
4116	* lifetime of the VM here. The rest are done dynamically while loading the
4117	* guest state.
4118	*
4119	* @param pVCpu The cross context virtual CPU structure.
4120	* @param pVmcsInfo The VMCS info. object.
4121	*/
4122	static void hmR0VmxSetupVmcsXcptBitmap(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
4123	{
4124	/*
4125	* The following exceptions are always intercepted:
4126	*
4127	* #AC - To prevent the guest from hanging the CPU and for dealing with
4128	* split-lock detecting host configs.
4129	* #DB - To maintain the DR6 state even when intercepting DRx reads/writes and
4130	* recursive #DBs can cause a CPU hang.
4131	* #PF - To sync our shadow page tables when nested-paging is not used.
4132	*/
4133	bool const fNestedPaging = pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging;
4134	uint32_t const uXcptBitmap = RT_BIT(X86_XCPT_AC)
4135	\| RT_BIT(X86_XCPT_DB)
4136	\| (fNestedPaging ? 0 : RT_BIT(X86_XCPT_PF));
4137
4138	/* Commit it to the VMCS. */
4139	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, uXcptBitmap);
4140	AssertRC(rc);
4141
4142	/* Update our cache of the exception bitmap. */
4143	pVmcsInfo->u32XcptBitmap = uXcptBitmap;
4144	}
4145
4146
4147	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4148	/**
4149	* Sets up the VMCS for executing a nested-guest using hardware-assisted VMX.
4150	*
4151	* @returns VBox status code.
4152	* @param pVmcsInfo The VMCS info. object.
4153	*/
4154	static int hmR0VmxSetupVmcsCtlsNested(PVMXVMCSINFO pVmcsInfo)
4155	{
4156	Assert(pVmcsInfo->u64VmcsLinkPtr == NIL_RTHCPHYS);
4157	int rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_VMCS_LINK_PTR_FULL, NIL_RTHCPHYS);
4158	AssertRC(rc);
4159
4160	rc = hmR0VmxSetupVmcsAutoLoadStoreMsrAddrs(pVmcsInfo);
4161	if (RT_SUCCESS(rc))
4162	{
4163	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_MSR_BITMAPS)
4164	hmR0VmxSetupVmcsMsrBitmapAddr(pVmcsInfo);
4165
4166	/* Paranoia - We've not yet initialized these, they shall be done while merging the VMCS. */
4167	Assert(!pVmcsInfo->u64Cr0Mask);
4168	Assert(!pVmcsInfo->u64Cr4Mask);
4169	return VINF_SUCCESS;
4170	}
4171	LogRelFunc(("Failed to set up the VMCS link pointer in the nested-guest VMCS. rc=%Rrc\n", rc));
4172	return rc;
4173	}
4174	#endif
4175
4176
4177	/**
4178	* Sets pfnStartVm to the best suited variant.
4179	*
4180	* This must be called whenever anything changes relative to the hmR0VmXStartVm
4181	* variant selection:
4182	* - pVCpu->hm.s.fLoadSaveGuestXcr0
4183	* - HM_WSF_IBPB_ENTRY in pVCpu->hmr0.s.fWorldSwitcher
4184	* - HM_WSF_IBPB_EXIT in pVCpu->hmr0.s.fWorldSwitcher
4185	* - Perhaps: CPUMIsGuestFPUStateActive() (windows only)
4186	* - Perhaps: CPUMCTX.fXStateMask (windows only)
4187	*
4188	* We currently ASSUME that neither HM_WSF_IBPB_ENTRY nor HM_WSF_IBPB_EXIT
4189	* cannot be changed at runtime.
4190	*/
4191	static void hmR0VmxUpdateStartVmFunction(PVMCPUCC pVCpu)
4192	{
4193	static const struct CLANGWORKAROUND { PFNHMVMXSTARTVM pfn; } s_aHmR0VmxStartVmFunctions[] =
4194	{
4195	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_SansL1dEntry_SansMdsEntry_SansIbpbExit },
4196	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_SansL1dEntry_SansMdsEntry_SansIbpbExit },
4197	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_SansL1dEntry_SansMdsEntry_SansIbpbExit },
4198	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_SansL1dEntry_SansMdsEntry_SansIbpbExit },
4199	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_WithL1dEntry_SansMdsEntry_SansIbpbExit },
4200	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_WithL1dEntry_SansMdsEntry_SansIbpbExit },
4201	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_WithL1dEntry_SansMdsEntry_SansIbpbExit },
4202	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_WithL1dEntry_SansMdsEntry_SansIbpbExit },
4203	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_SansL1dEntry_WithMdsEntry_SansIbpbExit },
4204	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_SansL1dEntry_WithMdsEntry_SansIbpbExit },
4205	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_SansL1dEntry_WithMdsEntry_SansIbpbExit },
4206	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_SansL1dEntry_WithMdsEntry_SansIbpbExit },
4207	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_WithL1dEntry_WithMdsEntry_SansIbpbExit },
4208	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_WithL1dEntry_WithMdsEntry_SansIbpbExit },
4209	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_WithL1dEntry_WithMdsEntry_SansIbpbExit },
4210	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_WithL1dEntry_WithMdsEntry_SansIbpbExit },
4211	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_SansL1dEntry_SansMdsEntry_WithIbpbExit },
4212	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_SansL1dEntry_SansMdsEntry_WithIbpbExit },
4213	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_SansL1dEntry_SansMdsEntry_WithIbpbExit },
4214	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_SansL1dEntry_SansMdsEntry_WithIbpbExit },
4215	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_WithL1dEntry_SansMdsEntry_WithIbpbExit },
4216	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_WithL1dEntry_SansMdsEntry_WithIbpbExit },
4217	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_WithL1dEntry_SansMdsEntry_WithIbpbExit },
4218	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_WithL1dEntry_SansMdsEntry_WithIbpbExit },
4219	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_SansL1dEntry_WithMdsEntry_WithIbpbExit },
4220	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_SansL1dEntry_WithMdsEntry_WithIbpbExit },
4221	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_SansL1dEntry_WithMdsEntry_WithIbpbExit },
4222	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_SansL1dEntry_WithMdsEntry_WithIbpbExit },
4223	{ hmR0VmxStartVm_SansXcr0_SansIbpbEntry_WithL1dEntry_WithMdsEntry_WithIbpbExit },
4224	{ hmR0VmxStartVm_WithXcr0_SansIbpbEntry_WithL1dEntry_WithMdsEntry_WithIbpbExit },
4225	{ hmR0VmxStartVm_SansXcr0_WithIbpbEntry_WithL1dEntry_WithMdsEntry_WithIbpbExit },
4226	{ hmR0VmxStartVm_WithXcr0_WithIbpbEntry_WithL1dEntry_WithMdsEntry_WithIbpbExit },
4227	};
4228	uintptr_t const idx = (pVCpu->hmr0.s.fLoadSaveGuestXcr0 ? 1 : 0)
4229	\| (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_IBPB_ENTRY ? 2 : 0)
4230	\| (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_L1D_ENTRY ? 4 : 0)
4231	\| (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_MDS_ENTRY ? 8 : 0)
4232	\| (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_IBPB_EXIT ? 16 : 0);
4233	PFNHMVMXSTARTVM const pfnStartVm = s_aHmR0VmxStartVmFunctions[idx].pfn;
4234	if (pVCpu->hmr0.s.vmx.pfnStartVm != pfnStartVm)
4235	pVCpu->hmr0.s.vmx.pfnStartVm = pfnStartVm;
4236	}
4237
4238
4239	/**
4240	* Selector FNHMSVMVMRUN implementation.
4241	*/
4242	static DECLCALLBACK(int) hmR0VmxStartVmSelector(PVMXVMCSINFO pVmcsInfo, PVMCPUCC pVCpu, bool fResume)
4243	{
4244	hmR0VmxUpdateStartVmFunction(pVCpu);
4245	return pVCpu->hmr0.s.vmx.pfnStartVm(pVmcsInfo, pVCpu, fResume);
4246	}
4247
4248
4249	/**
4250	* Sets up the VMCS for executing a guest (or nested-guest) using hardware-assisted
4251	* VMX.
4252	*
4253	* @returns VBox status code.
4254	* @param pVCpu The cross context virtual CPU structure.
4255	* @param pVmcsInfo The VMCS info. object.
4256	* @param fIsNstGstVmcs Whether this is a nested-guest VMCS.
4257	*/
4258	static int hmR0VmxSetupVmcs(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, bool fIsNstGstVmcs)
4259	{
4260	Assert(pVmcsInfo->pvVmcs);
4261	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
4262
4263	/* Set the CPU specified revision identifier at the beginning of the VMCS structure. */
4264	(uint32_t )pVmcsInfo->pvVmcs = RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_ID);
4265	const char * const pszVmcs = fIsNstGstVmcs ? "nested-guest VMCS" : "guest VMCS";
4266
4267	LogFlowFunc(("\n"));
4268
4269	/*
4270	* Initialize the VMCS using VMCLEAR before loading the VMCS.
4271	* See Intel spec. 31.6 "Preparation And Launching A Virtual Machine".
4272	*/
4273	int rc = hmR0VmxClearVmcs(pVmcsInfo);
4274	if (RT_SUCCESS(rc))
4275	{
4276	rc = hmR0VmxLoadVmcs(pVmcsInfo);
4277	if (RT_SUCCESS(rc))
4278	{
4279	/*
4280	* Initialize the hardware-assisted VMX execution handler for guest and nested-guest VMCS.
4281	* The host is always 64-bit since we no longer support 32-bit hosts.
4282	* Currently we have just a single handler for all guest modes as well, see @bugref{6208#c73}.
4283	*/
4284	if (!fIsNstGstVmcs)
4285	{
4286	rc = hmR0VmxSetupVmcsPinCtls(pVCpu, pVmcsInfo);
4287	if (RT_SUCCESS(rc))
4288	{
4289	rc = hmR0VmxSetupVmcsProcCtls(pVCpu, pVmcsInfo);
4290	if (RT_SUCCESS(rc))
4291	{
4292	rc = hmR0VmxSetupVmcsMiscCtls(pVCpu, pVmcsInfo);
4293	if (RT_SUCCESS(rc))
4294	{
4295	hmR0VmxSetupVmcsXcptBitmap(pVCpu, pVmcsInfo);
4296	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4297	/*
4298	* If a shadow VMCS is allocated for the VMCS info. object, initialize the
4299	* VMCS revision ID and shadow VMCS indicator bit. Also, clear the VMCS
4300	* making it fit for use when VMCS shadowing is later enabled.
4301	*/
4302	if (pVmcsInfo->pvShadowVmcs)
4303	{
4304	VMXVMCSREVID VmcsRevId;
4305	VmcsRevId.u = RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_ID);
4306	VmcsRevId.n.fIsShadowVmcs = 1;
4307	(uint32_t )pVmcsInfo->pvShadowVmcs = VmcsRevId.u;
4308	rc = hmR0VmxClearShadowVmcs(pVmcsInfo);
4309	if (RT_SUCCESS(rc))
4310	{ /* likely */ }
4311	else
4312	LogRelFunc(("Failed to initialize shadow VMCS. rc=%Rrc\n", rc));
4313	}
4314	#endif
4315	}
4316	else
4317	LogRelFunc(("Failed to setup miscellaneous controls. rc=%Rrc\n", rc));
4318	}
4319	else
4320	LogRelFunc(("Failed to setup processor-based VM-execution controls. rc=%Rrc\n", rc));
4321	}
4322	else
4323	LogRelFunc(("Failed to setup pin-based controls. rc=%Rrc\n", rc));
4324	}
4325	else
4326	{
4327	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4328	rc = hmR0VmxSetupVmcsCtlsNested(pVmcsInfo);
4329	if (RT_SUCCESS(rc))
4330	{ /* likely */ }
4331	else
4332	LogRelFunc(("Failed to initialize nested-guest VMCS. rc=%Rrc\n", rc));
4333	#else
4334	AssertFailed();
4335	#endif
4336	}
4337	}
4338	else
4339	LogRelFunc(("Failed to load the %s. rc=%Rrc\n", rc, pszVmcs));
4340	}
4341	else
4342	LogRelFunc(("Failed to clear the %s. rc=%Rrc\n", rc, pszVmcs));
4343
4344	/* Sync any CPU internal VMCS data back into our VMCS in memory. */
4345	if (RT_SUCCESS(rc))
4346	{
4347	rc = hmR0VmxClearVmcs(pVmcsInfo);
4348	if (RT_SUCCESS(rc))
4349	{ /* likely */ }
4350	else
4351	LogRelFunc(("Failed to clear the %s post setup. rc=%Rrc\n", rc, pszVmcs));
4352	}
4353
4354	/*
4355	* Update the last-error record both for failures and success, so we
4356	* can propagate the status code back to ring-3 for diagnostics.
4357	*/
4358	hmR0VmxUpdateErrorRecord(pVCpu, rc);
4359	NOREF(pszVmcs);
4360	return rc;
4361	}
4362
4363
4364	/**
4365	* Does global VT-x initialization (called during module initialization).
4366	*
4367	* @returns VBox status code.
4368	*/
4369	VMMR0DECL(int) VMXR0GlobalInit(void)
4370	{
4371	#ifdef HMVMX_USE_FUNCTION_TABLE
4372	AssertCompile(VMX_EXIT_MAX + 1 == RT_ELEMENTS(g_aVMExitHandlers));
4373	# ifdef VBOX_STRICT
4374	for (unsigned i = 0; i < RT_ELEMENTS(g_aVMExitHandlers); i++)
4375	Assert(g_aVMExitHandlers[i].pfn);
4376	# endif
4377	#endif
4378	return VINF_SUCCESS;
4379	}
4380
4381
4382	/**
4383	* Does global VT-x termination (called during module termination).
4384	*/
4385	VMMR0DECL(void) VMXR0GlobalTerm()
4386	{
4387	/* Nothing to do currently. */
4388	}
4389
4390
4391	/**
4392	* Sets up and activates VT-x on the current CPU.
4393	*
4394	* @returns VBox status code.
4395	* @param pHostCpu The HM physical-CPU structure.
4396	* @param pVM The cross context VM structure. Can be
4397	* NULL after a host resume operation.
4398	* @param pvCpuPage Pointer to the VMXON region (can be NULL if @a
4399	* fEnabledByHost is @c true).
4400	* @param HCPhysCpuPage Physical address of the VMXON region (can be 0 if
4401	* @a fEnabledByHost is @c true).
4402	* @param fEnabledByHost Set if SUPR0EnableVTx() or similar was used to
4403	* enable VT-x on the host.
4404	* @param pHwvirtMsrs Pointer to the hardware-virtualization MSRs.
4405	*/
4406	VMMR0DECL(int) VMXR0EnableCpu(PHMPHYSCPU pHostCpu, PVMCC pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
4407	PCSUPHWVIRTMSRS pHwvirtMsrs)
4408	{
4409	AssertPtr(pHostCpu);
4410	AssertPtr(pHwvirtMsrs);
4411	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
4412
4413	/* Enable VT-x if it's not already enabled by the host. */
4414	if (!fEnabledByHost)
4415	{
4416	int rc = hmR0VmxEnterRootMode(pHostCpu, pVM, HCPhysCpuPage, pvCpuPage);
4417	if (RT_FAILURE(rc))
4418	return rc;
4419	}
4420
4421	/*
4422	* Flush all EPT tagged-TLB entries (in case VirtualBox or any other hypervisor have been
4423	* using EPTPs) so we don't retain any stale guest-physical mappings which won't get
4424	* invalidated when flushing by VPID.
4425	*/
4426	if (pHwvirtMsrs->u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_INVEPT_ALL_CONTEXTS)
4427	{
4428	hmR0VmxFlushEpt(NULL /* pVCpu /, NULL / pVmcsInfo */, VMXTLBFLUSHEPT_ALL_CONTEXTS);
4429	pHostCpu->fFlushAsidBeforeUse = false;
4430	}
4431	else
4432	pHostCpu->fFlushAsidBeforeUse = true;
4433
4434	/* Ensure each VCPU scheduled on this CPU gets a new VPID on resume. See @bugref{6255}. */
4435	++pHostCpu->cTlbFlushes;
4436
4437	return VINF_SUCCESS;
4438	}
4439
4440
4441	/**
4442	* Deactivates VT-x on the current CPU.
4443	*
4444	* @returns VBox status code.
4445	* @param pHostCpu The HM physical-CPU structure.
4446	* @param pvCpuPage Pointer to the VMXON region.
4447	* @param HCPhysCpuPage Physical address of the VMXON region.
4448	*
4449	* @remarks This function should never be called when SUPR0EnableVTx() or
4450	* similar was used to enable VT-x on the host.
4451	*/
4452	VMMR0DECL(int) VMXR0DisableCpu(PHMPHYSCPU pHostCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
4453	{
4454	RT_NOREF2(pvCpuPage, HCPhysCpuPage);
4455
4456	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
4457	return hmR0VmxLeaveRootMode(pHostCpu);
4458	}
4459
4460
4461	/**
4462	* Does per-VM VT-x initialization.
4463	*
4464	* @returns VBox status code.
4465	* @param pVM The cross context VM structure.
4466	*/
4467	VMMR0DECL(int) VMXR0InitVM(PVMCC pVM)
4468	{
4469	AssertPtr(pVM);
4470	LogFlowFunc(("pVM=%p\n", pVM));
4471
4472	hmR0VmxStructsInit(pVM);
4473	int rc = hmR0VmxStructsAlloc(pVM);
4474	if (RT_FAILURE(rc))
4475	{
4476	LogRelFunc(("Failed to allocated VMX structures. rc=%Rrc\n", rc));
4477	return rc;
4478	}
4479
4480	/* Setup the crash dump page. */
4481	#ifdef VBOX_WITH_CRASHDUMP_MAGIC
4482	strcpy((char *)pVM->hmr0.s.vmx.pbScratch, "SCRATCH Magic");
4483	(uint64_t )(pVM->hmr0.s.vmx.pbScratch + 16) = UINT64_C(0xdeadbeefdeadbeef);
4484	#endif
4485	return VINF_SUCCESS;
4486	}
4487
4488
4489	/**
4490	* Does per-VM VT-x termination.
4491	*
4492	* @returns VBox status code.
4493	* @param pVM The cross context VM structure.
4494	*/
4495	VMMR0DECL(int) VMXR0TermVM(PVMCC pVM)
4496	{
4497	AssertPtr(pVM);
4498	LogFlowFunc(("pVM=%p\n", pVM));
4499
4500	#ifdef VBOX_WITH_CRASHDUMP_MAGIC
4501	if (pVM->hmr0.s.vmx.pbScratch)
4502	RT_BZERO(pVM->hmr0.s.vmx.pbScratch, X86_PAGE_4K_SIZE);
4503	#endif
4504	hmR0VmxStructsFree(pVM);
4505	return VINF_SUCCESS;
4506	}
4507
4508
4509	/**
4510	* Sets up the VM for execution using hardware-assisted VMX.
4511	* This function is only called once per-VM during initialization.
4512	*
4513	* @returns VBox status code.
4514	* @param pVM The cross context VM structure.
4515	*/
4516	VMMR0DECL(int) VMXR0SetupVM(PVMCC pVM)
4517	{
4518	AssertPtr(pVM);
4519	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
4520
4521	LogFlowFunc(("pVM=%p\n", pVM));
4522
4523	/*
4524	* At least verify if VMX is enabled, since we can't check if we're in VMX root mode or not
4525	* without causing a #GP.
4526	*/
4527	RTCCUINTREG const uHostCr4 = ASMGetCR4();
4528	if (RT_LIKELY(uHostCr4 & X86_CR4_VMXE))
4529	{ /* likely */ }
4530	else
4531	return VERR_VMX_NOT_IN_VMX_ROOT_MODE;
4532
4533	/*
4534	* Check that nested paging is supported if enabled and copy over the flag to the
4535	* ring-0 only structure.
4536	*/
4537	bool const fNestedPaging = pVM->hm.s.fNestedPagingCfg;
4538	AssertReturn( !fNestedPaging
4539	\|\| (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_EPT), /** @todo use a ring-0 copy of ProcCtls2.n.allowed1 */
4540	VERR_INCOMPATIBLE_CONFIG);
4541	pVM->hmr0.s.fNestedPaging = fNestedPaging;
4542	pVM->hmr0.s.fAllow64BitGuests = pVM->hm.s.fAllow64BitGuestsCfg;
4543
4544	/*
4545	* Without unrestricted guest execution, pRealModeTSS and pNonPagingModeEPTPageTable must
4546	* always be allocated. We no longer support the highly unlikely case of unrestricted guest
4547	* without pRealModeTSS, see hmR3InitFinalizeR0Intel().
4548	*/
4549	bool const fUnrestrictedGuest = pVM->hm.s.vmx.fUnrestrictedGuestCfg;
4550	AssertReturn( !fUnrestrictedGuest
4551	\|\| ( (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_UNRESTRICTED_GUEST)
4552	&& fNestedPaging),
4553	VERR_INCOMPATIBLE_CONFIG);
4554	if ( !fUnrestrictedGuest
4555	&& ( !pVM->hm.s.vmx.pNonPagingModeEPTPageTable
4556	\|\| !pVM->hm.s.vmx.pRealModeTSS))
4557	{
4558	LogRelFunc(("Invalid real-on-v86 state.\n"));
4559	return VERR_INTERNAL_ERROR;
4560	}
4561	pVM->hmr0.s.vmx.fUnrestrictedGuest = fUnrestrictedGuest;
4562
4563	/* Initialize these always, see hmR3InitFinalizeR0().*/
4564	pVM->hm.s.ForR3.vmx.enmTlbFlushEpt = pVM->hmr0.s.vmx.enmTlbFlushEpt = VMXTLBFLUSHEPT_NONE;
4565	pVM->hm.s.ForR3.vmx.enmTlbFlushVpid = pVM->hmr0.s.vmx.enmTlbFlushVpid = VMXTLBFLUSHVPID_NONE;
4566
4567	/* Setup the tagged-TLB flush handlers. */
4568	int rc = hmR0VmxSetupTaggedTlb(pVM);
4569	if (RT_FAILURE(rc))
4570	{
4571	LogRelFunc(("Failed to setup tagged TLB. rc=%Rrc\n", rc));
4572	return rc;
4573	}
4574
4575	/* Determine LBR capabilities. */
4576	pVM->hmr0.s.vmx.fLbr = pVM->hm.s.vmx.fLbrCfg;
4577	if (pVM->hmr0.s.vmx.fLbr)
4578	{
4579	rc = hmR0VmxSetupLbrMsrRange(pVM);
4580	if (RT_FAILURE(rc))
4581	{
4582	LogRelFunc(("Failed to setup LBR MSR range. rc=%Rrc\n", rc));
4583	return rc;
4584	}
4585	}
4586
4587	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4588	/* Setup the shadow VMCS fields array and VMREAD/VMWRITE bitmaps. */
4589	if (pVM->hmr0.s.vmx.fUseVmcsShadowing)
4590	{
4591	rc = hmR0VmxSetupShadowVmcsFieldsArrays(pVM);
4592	if (RT_SUCCESS(rc))
4593	hmR0VmxSetupVmreadVmwriteBitmaps(pVM);
4594	else
4595	{
4596	LogRelFunc(("Failed to setup shadow VMCS fields arrays. rc=%Rrc\n", rc));
4597	return rc;
4598	}
4599	}
4600	#endif
4601
4602	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
4603	{
4604	PVMCPUCC pVCpu = VMCC_GET_CPU(pVM, idCpu);
4605	Log4Func(("pVCpu=%p idCpu=%RU32\n", pVCpu, pVCpu->idCpu));
4606
4607	pVCpu->hmr0.s.vmx.pfnStartVm = hmR0VmxStartVmSelector;
4608
4609	rc = hmR0VmxSetupVmcs(pVCpu, &pVCpu->hmr0.s.vmx.VmcsInfo, false /* fIsNstGstVmcs */);
4610	if (RT_SUCCESS(rc))
4611	{
4612	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4613	if (pVM->cpum.ro.GuestFeatures.fVmx)
4614	{
4615	rc = hmR0VmxSetupVmcs(pVCpu, &pVCpu->hmr0.s.vmx.VmcsInfoNstGst, true /* fIsNstGstVmcs */);
4616	if (RT_SUCCESS(rc))
4617	{ /* likely */ }
4618	else
4619	{
4620	LogRelFunc(("Nested-guest VMCS setup failed. rc=%Rrc\n", rc));
4621	return rc;
4622	}
4623	}
4624	#endif
4625	}
4626	else
4627	{
4628	LogRelFunc(("VMCS setup failed. rc=%Rrc\n", rc));
4629	return rc;
4630	}
4631	}
4632
4633	return VINF_SUCCESS;
4634	}
4635
4636
4637	/**
4638	* Saves the host control registers (CR0, CR3, CR4) into the host-state area in
4639	* the VMCS.
4640	* @returns CR4 for passing along to hmR0VmxExportHostSegmentRegs.
4641	*/
4642	static uint64_t hmR0VmxExportHostControlRegs(void)
4643	{
4644	int rc = VMXWriteVmcsNw(VMX_VMCS_HOST_CR0, ASMGetCR0()); AssertRC(rc);
4645	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_CR3, ASMGetCR3()); AssertRC(rc);
4646	uint64_t uHostCr4 = ASMGetCR4();
4647	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_CR4, uHostCr4); AssertRC(rc);
4648	return uHostCr4;
4649	}
4650
4651
4652	/**
4653	* Saves the host segment registers and GDTR, IDTR, (TR, GS and FS bases) into
4654	* the host-state area in the VMCS.
4655	*
4656	* @returns VBox status code.
4657	* @param pVCpu The cross context virtual CPU structure.
4658	* @param uHostCr4 The host CR4 value.
4659	*/
4660	static int hmR0VmxExportHostSegmentRegs(PVMCPUCC pVCpu, uint64_t uHostCr4)
4661	{
4662	/*
4663	* If we've executed guest code using hardware-assisted VMX, the host-state bits
4664	* will be messed up. We should -not- save the messed up state without restoring
4665	* the original host-state, see @bugref{7240}.
4666	*
4667	* This apparently can happen (most likely the FPU changes), deal with it rather than
4668	* asserting. Was observed booting Solaris 10u10 32-bit guest.
4669	*/
4670	if (pVCpu->hmr0.s.vmx.fRestoreHostFlags > VMX_RESTORE_HOST_REQUIRED)
4671	{
4672	Log4Func(("Restoring Host State: fRestoreHostFlags=%#RX32 HostCpuId=%u\n", pVCpu->hmr0.s.vmx.fRestoreHostFlags,
4673	pVCpu->idCpu));
4674	VMXRestoreHostState(pVCpu->hmr0.s.vmx.fRestoreHostFlags, &pVCpu->hmr0.s.vmx.RestoreHost);
4675	pVCpu->hmr0.s.vmx.fRestoreHostFlags = 0;
4676	}
4677
4678	/*
4679	* Get all the host info.
4680	* ASSUME it is safe to use rdfsbase and friends if the CR4.FSGSBASE bit is set
4681	* without also checking the cpuid bit.
4682	*/
4683	uint32_t fRestoreHostFlags;
4684	#if RT_INLINE_ASM_EXTERNAL
4685	if (uHostCr4 & X86_CR4_FSGSBASE)
4686	{
4687	hmR0VmxExportHostSegmentRegsAsmHlp(&pVCpu->hmr0.s.vmx.RestoreHost, true /fHaveFsGsBase/);
4688	fRestoreHostFlags = VMX_RESTORE_HOST_CAN_USE_WRFSBASE_AND_WRGSBASE;
4689	}
4690	else
4691	{
4692	hmR0VmxExportHostSegmentRegsAsmHlp(&pVCpu->hmr0.s.vmx.RestoreHost, false /fHaveFsGsBase/);
4693	fRestoreHostFlags = 0;
4694	}
4695	RTSEL uSelES = pVCpu->hmr0.s.vmx.RestoreHost.uHostSelES;
4696	RTSEL uSelDS = pVCpu->hmr0.s.vmx.RestoreHost.uHostSelDS;
4697	RTSEL uSelFS = pVCpu->hmr0.s.vmx.RestoreHost.uHostSelFS;
4698	RTSEL uSelGS = pVCpu->hmr0.s.vmx.RestoreHost.uHostSelGS;
4699	#else
4700	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelTR = ASMGetTR();
4701	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelSS = ASMGetSS();
4702	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelCS = ASMGetCS();
4703	ASMGetGDTR((PRTGDTR)&pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr);
4704	ASMGetIDTR((PRTIDTR)&pVCpu->hmr0.s.vmx.RestoreHost.HostIdtr);
4705	if (uHostCr4 & X86_CR4_FSGSBASE)
4706	{
4707	pVCpu->hmr0.s.vmx.RestoreHost.uHostFSBase = ASMGetFSBase();
4708	pVCpu->hmr0.s.vmx.RestoreHost.uHostGSBase = ASMGetGSBase();
4709	fRestoreHostFlags = VMX_RESTORE_HOST_CAN_USE_WRFSBASE_AND_WRGSBASE;
4710	}
4711	else
4712	{
4713	pVCpu->hmr0.s.vmx.RestoreHost.uHostFSBase = ASMRdMsr(MSR_K8_FS_BASE);
4714	pVCpu->hmr0.s.vmx.RestoreHost.uHostGSBase = ASMRdMsr(MSR_K8_GS_BASE);
4715	fRestoreHostFlags = 0;
4716	}
4717	RTSEL uSelES, uSelDS, uSelFS, uSelGS;
4718	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelDS = uSelDS = ASMGetDS();
4719	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelES = uSelES = ASMGetES();
4720	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelFS = uSelFS = ASMGetFS();
4721	pVCpu->hmr0.s.vmx.RestoreHost.uHostSelGS = uSelGS = ASMGetGS();
4722	#endif
4723
4724	/*
4725	* Determine if the host segment registers are suitable for VT-x. Otherwise use zero to
4726	* gain VM-entry and restore them before we get preempted.
4727	*
4728	* See Intel spec. 26.2.3 "Checks on Host Segment and Descriptor-Table Registers".
4729	*/
4730	RTSEL const uSelAll = uSelFS \| uSelGS \| uSelES \| uSelDS;
4731	if (uSelAll & (X86_SEL_RPL \| X86_SEL_LDT))
4732	{
4733	if (!(uSelAll & X86_SEL_LDT))
4734	{
4735	#define VMXLOCAL_ADJUST_HOST_SEG(a_Seg, a_uVmcsVar) \
4736	do { \
4737	(a_uVmcsVar) = pVCpu->hmr0.s.vmx.RestoreHost.uHostSel##a_Seg; \
4738	if ((a_uVmcsVar) & X86_SEL_RPL) \
4739	{ \
4740	fRestoreHostFlags \|= VMX_RESTORE_HOST_SEL_##a_Seg; \
4741	(a_uVmcsVar) = 0; \
4742	} \
4743	} while (0)
4744	VMXLOCAL_ADJUST_HOST_SEG(DS, uSelDS);
4745	VMXLOCAL_ADJUST_HOST_SEG(ES, uSelES);
4746	VMXLOCAL_ADJUST_HOST_SEG(FS, uSelFS);
4747	VMXLOCAL_ADJUST_HOST_SEG(GS, uSelGS);
4748	#undef VMXLOCAL_ADJUST_HOST_SEG
4749	}
4750	else
4751	{
4752	#define VMXLOCAL_ADJUST_HOST_SEG(a_Seg, a_uVmcsVar) \
4753	do { \
4754	(a_uVmcsVar) = pVCpu->hmr0.s.vmx.RestoreHost.uHostSel##a_Seg; \
4755	if ((a_uVmcsVar) & (X86_SEL_RPL \| X86_SEL_LDT)) \
4756	{ \
4757	if (!((a_uVmcsVar) & X86_SEL_LDT)) \
4758	fRestoreHostFlags \|= VMX_RESTORE_HOST_SEL_##a_Seg; \
4759	else \
4760	{ \
4761	uint32_t const fAttr = ASMGetSegAttr(a_uVmcsVar); \
4762	if ((fAttr & X86_DESC_P) && fAttr != UINT32_MAX) \
4763	fRestoreHostFlags \|= VMX_RESTORE_HOST_SEL_##a_Seg; \
4764	} \
4765	(a_uVmcsVar) = 0; \
4766	} \
4767	} while (0)
4768	VMXLOCAL_ADJUST_HOST_SEG(DS, uSelDS);
4769	VMXLOCAL_ADJUST_HOST_SEG(ES, uSelES);
4770	VMXLOCAL_ADJUST_HOST_SEG(FS, uSelFS);
4771	VMXLOCAL_ADJUST_HOST_SEG(GS, uSelGS);
4772	#undef VMXLOCAL_ADJUST_HOST_SEG
4773	}
4774	}
4775
4776	/* Verification based on Intel spec. 26.2.3 "Checks on Host Segment and Descriptor-Table Registers" */
4777	Assert(!(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelTR & X86_SEL_RPL)); Assert(!(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelTR & X86_SEL_LDT)); Assert(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelTR);
4778	Assert(!(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelCS & X86_SEL_RPL)); Assert(!(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelCS & X86_SEL_LDT)); Assert(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelCS);
4779	Assert(!(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelSS & X86_SEL_RPL)); Assert(!(pVCpu->hmr0.s.vmx.RestoreHost.uHostSelSS & X86_SEL_LDT));
4780	Assert(!(uSelDS & X86_SEL_RPL)); Assert(!(uSelDS & X86_SEL_LDT));
4781	Assert(!(uSelES & X86_SEL_RPL)); Assert(!(uSelES & X86_SEL_LDT));
4782	Assert(!(uSelFS & X86_SEL_RPL)); Assert(!(uSelFS & X86_SEL_LDT));
4783	Assert(!(uSelGS & X86_SEL_RPL)); Assert(!(uSelGS & X86_SEL_LDT));
4784
4785	/*
4786	* Determine if we need to manually need to restore the GDTR and IDTR limits as VT-x zaps
4787	* them to the maximum limit (0xffff) on every VM-exit.
4788	*/
4789	if (pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr.cb != 0xffff)
4790	fRestoreHostFlags \|= VMX_RESTORE_HOST_GDTR;
4791
4792	/*
4793	* IDT limit is effectively capped at 0xfff. (See Intel spec. 6.14.1 "64-Bit Mode IDT" and
4794	* Intel spec. 6.2 "Exception and Interrupt Vectors".) Therefore if the host has the limit
4795	* as 0xfff, VT-x bloating the limit to 0xffff shouldn't cause any different CPU behavior.
4796	* However, several hosts either insists on 0xfff being the limit (Windows Patch Guard) or
4797	* uses the limit for other purposes (darwin puts the CPU ID in there but botches sidt
4798	* alignment in at least one consumer). So, we're only allowing the IDTR.LIMIT to be left
4799	* at 0xffff on hosts where we are sure it won't cause trouble.
4800	*/
4801	#if defined(RT_OS_LINUX) \|\| defined(RT_OS_SOLARIS)
4802	if (pVCpu->hmr0.s.vmx.RestoreHost.HostIdtr.cb < 0x0fff)
4803	#else
4804	if (pVCpu->hmr0.s.vmx.RestoreHost.HostIdtr.cb != 0xffff)
4805	#endif
4806	fRestoreHostFlags \|= VMX_RESTORE_HOST_IDTR;
4807
4808	/*
4809	* Host TR base. Verify that TR selector doesn't point past the GDT. Masking off the TI
4810	* and RPL bits is effectively what the CPU does for "scaling by 8". TI is always 0 and
4811	* RPL should be too in most cases.
4812	*/
4813	RTSEL const uSelTR = pVCpu->hmr0.s.vmx.RestoreHost.uHostSelTR;
4814	AssertMsgReturn((uSelTR \| X86_SEL_RPL_LDT) <= pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr.cb,
4815	("TR selector exceeds limit. TR=%RTsel cbGdt=%#x\n", uSelTR, pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr.cb),
4816	VERR_VMX_INVALID_HOST_STATE);
4817
4818	PCX86DESCHC pDesc = (PCX86DESCHC)(pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr.uAddr + (uSelTR & X86_SEL_MASK));
4819	uintptr_t const uTRBase = X86DESC64_BASE(pDesc);
4820
4821	/*
4822	* VT-x unconditionally restores the TR limit to 0x67 and type to 11 (32-bit busy TSS) on
4823	* all VM-exits. The type is the same for 64-bit busy TSS[1]. The limit needs manual
4824	* restoration if the host has something else. Task switching is not supported in 64-bit
4825	* mode[2], but the limit still matters as IOPM is supported in 64-bit mode. Restoring the
4826	* limit lazily while returning to ring-3 is safe because IOPM is not applicable in ring-0.
4827	*
4828	* [1] See Intel spec. 3.5 "System Descriptor Types".
4829	* [2] See Intel spec. 7.2.3 "TSS Descriptor in 64-bit mode".
4830	*/
4831	Assert(pDesc->System.u4Type == 11);
4832	if ( pDesc->System.u16LimitLow != 0x67
4833	\|\| pDesc->System.u4LimitHigh)
4834	{
4835	fRestoreHostFlags \|= VMX_RESTORE_HOST_SEL_TR;
4836
4837	/* If the host has made GDT read-only, we would need to temporarily toggle CR0.WP before writing the GDT. */
4838	if (g_fHmHostKernelFeatures & SUPKERNELFEATURES_GDT_READ_ONLY)
4839	fRestoreHostFlags \|= VMX_RESTORE_HOST_GDT_READ_ONLY;
4840	if (g_fHmHostKernelFeatures & SUPKERNELFEATURES_GDT_NEED_WRITABLE)
4841	{
4842	/* The GDT is read-only but the writable GDT is available. */
4843	fRestoreHostFlags \|= VMX_RESTORE_HOST_GDT_NEED_WRITABLE;
4844	pVCpu->hmr0.s.vmx.RestoreHost.HostGdtrRw.cb = pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr.cb;
4845	int rc = SUPR0GetCurrentGdtRw(&pVCpu->hmr0.s.vmx.RestoreHost.HostGdtrRw.uAddr);
4846	AssertRCReturn(rc, rc);
4847	}
4848	}
4849
4850	pVCpu->hmr0.s.vmx.fRestoreHostFlags = fRestoreHostFlags;
4851
4852	/*
4853	* Do all the VMCS updates in one block to assist nested virtualization.
4854	*/
4855	int rc;
4856	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_CS_SEL, pVCpu->hmr0.s.vmx.RestoreHost.uHostSelCS); AssertRC(rc);
4857	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_SS_SEL, pVCpu->hmr0.s.vmx.RestoreHost.uHostSelSS); AssertRC(rc);
4858	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_DS_SEL, uSelDS); AssertRC(rc);
4859	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_ES_SEL, uSelES); AssertRC(rc);
4860	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_FS_SEL, uSelFS); AssertRC(rc);
4861	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_GS_SEL, uSelGS); AssertRC(rc);
4862	rc = VMXWriteVmcs16(VMX_VMCS16_HOST_TR_SEL, pVCpu->hmr0.s.vmx.RestoreHost.uHostSelTR); AssertRC(rc);
4863	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_GDTR_BASE, pVCpu->hmr0.s.vmx.RestoreHost.HostGdtr.uAddr); AssertRC(rc);
4864	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_IDTR_BASE, pVCpu->hmr0.s.vmx.RestoreHost.HostIdtr.uAddr); AssertRC(rc);
4865	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_TR_BASE, uTRBase); AssertRC(rc);
4866	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_FS_BASE, pVCpu->hmr0.s.vmx.RestoreHost.uHostFSBase); AssertRC(rc);
4867	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_GS_BASE, pVCpu->hmr0.s.vmx.RestoreHost.uHostGSBase); AssertRC(rc);
4868
4869	return VINF_SUCCESS;
4870	}
4871
4872
4873	/**
4874	* Exports certain host MSRs in the VM-exit MSR-load area and some in the
4875	* host-state area of the VMCS.
4876	*
4877	* These MSRs will be automatically restored on the host after every successful
4878	* VM-exit.
4879	*
4880	* @param pVCpu The cross context virtual CPU structure.
4881	*
4882	* @remarks No-long-jump zone!!!
4883	*/
4884	static void hmR0VmxExportHostMsrs(PVMCPUCC pVCpu)
4885	{
4886	AssertPtr(pVCpu);
4887
4888	/*
4889	* Save MSRs that we restore lazily (due to preemption or transition to ring-3)
4890	* rather than swapping them on every VM-entry.
4891	*/
4892	hmR0VmxLazySaveHostMsrs(pVCpu);
4893
4894	/*
4895	* Host Sysenter MSRs.
4896	*/
4897	int rc = VMXWriteVmcs32(VMX_VMCS32_HOST_SYSENTER_CS, ASMRdMsr_Low(MSR_IA32_SYSENTER_CS)); AssertRC(rc);
4898	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_SYSENTER_ESP, ASMRdMsr(MSR_IA32_SYSENTER_ESP)); AssertRC(rc);
4899	rc = VMXWriteVmcsNw(VMX_VMCS_HOST_SYSENTER_EIP, ASMRdMsr(MSR_IA32_SYSENTER_EIP)); AssertRC(rc);
4900
4901	/*
4902	* Host EFER MSR.
4903	*
4904	* If the CPU supports the newer VMCS controls for managing EFER, use it. Otherwise it's
4905	* done as part of auto-load/store MSR area in the VMCS, see hmR0VmxExportGuestMsrs().
4906	*/
4907	if (g_fHmVmxSupportsVmcsEfer)
4908	{
4909	rc = VMXWriteVmcs64(VMX_VMCS64_HOST_EFER_FULL, g_uHmVmxHostMsrEfer);
4910	AssertRC(rc);
4911	}
4912
4913	/** @todo IA32_PERF_GLOBALCTRL, IA32_PAT also see
4914	* hmR0VmxExportGuestEntryExitCtls(). */
4915	}
4916
4917
4918	/**
4919	* Figures out if we need to swap the EFER MSR which is particularly expensive.
4920	*
4921	* We check all relevant bits. For now, that's everything besides LMA/LME, as
4922	* these two bits are handled by VM-entry, see hmR0VMxExportGuestEntryExitCtls().
4923	*
4924	* @returns true if we need to load guest EFER, false otherwise.
4925	* @param pVCpu The cross context virtual CPU structure.
4926	* @param pVmxTransient The VMX-transient structure.
4927	*
4928	* @remarks Requires EFER, CR4.
4929	* @remarks No-long-jump zone!!!
4930	*/
4931	static bool hmR0VmxShouldSwapEferMsr(PCVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
4932	{
4933	#ifdef HMVMX_ALWAYS_SWAP_EFER
4934	RT_NOREF2(pVCpu, pVmxTransient);
4935	return true;
4936	#else
4937	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
4938	uint64_t const u64HostEfer = g_uHmVmxHostMsrEfer;
4939	uint64_t const u64GuestEfer = pCtx->msrEFER;
4940
4941	# ifdef VBOX_WITH_NESTED_HWVIRT_VMX
4942	/*
4943	* For nested-guests, we shall honor swapping the EFER MSR when requested by
4944	* the nested-guest.
4945	*/
4946	if ( pVmxTransient->fIsNestedGuest
4947	&& ( CPUMIsGuestVmxEntryCtlsSet(pCtx, VMX_ENTRY_CTLS_LOAD_EFER_MSR)
4948	\|\| CPUMIsGuestVmxExitCtlsSet(pCtx, VMX_EXIT_CTLS_SAVE_EFER_MSR)
4949	\|\| CPUMIsGuestVmxExitCtlsSet(pCtx, VMX_EXIT_CTLS_LOAD_EFER_MSR)))
4950	return true;
4951	# else
4952	RT_NOREF(pVmxTransient);
4953	#endif
4954
4955	/*
4956	* For 64-bit guests, if EFER.SCE bit differs, we need to swap the EFER MSR
4957	* to ensure that the guest's SYSCALL behaviour isn't broken, see @bugref{7386}.
4958	*/
4959	if ( CPUMIsGuestInLongModeEx(pCtx)
4960	&& (u64GuestEfer & MSR_K6_EFER_SCE) != (u64HostEfer & MSR_K6_EFER_SCE))
4961	return true;
4962
4963	/*
4964	* If the guest uses PAE and EFER.NXE bit differs, we need to swap the EFER MSR
4965	* as it affects guest paging. 64-bit paging implies CR4.PAE as well.
4966	*
4967	* See Intel spec. 4.5 "IA-32e Paging".
4968	* See Intel spec. 4.1.1 "Three Paging Modes".
4969	*
4970	* Verify that we always intercept CR4.PAE and CR0.PG bits, so we don't need to
4971	* import CR4 and CR0 from the VMCS here as those bits are always up to date.
4972	*/
4973	Assert(hmR0VmxGetFixedCr4Mask(pVCpu) & X86_CR4_PAE);
4974	Assert(hmR0VmxGetFixedCr0Mask(pVCpu) & X86_CR0_PG);
4975	if ( (pCtx->cr4 & X86_CR4_PAE)
4976	&& (pCtx->cr0 & X86_CR0_PG))
4977	{
4978	/*
4979	* If nested paging is not used, verify that the guest paging mode matches the
4980	* shadow paging mode which is/will be placed in the VMCS (which is what will
4981	* actually be used while executing the guest and not the CR4 shadow value).
4982	*/
4983	AssertMsg( pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging
4984	\|\| pVCpu->hm.s.enmShadowMode == PGMMODE_PAE
4985	\|\| pVCpu->hm.s.enmShadowMode == PGMMODE_PAE_NX
4986	\|\| pVCpu->hm.s.enmShadowMode == PGMMODE_AMD64
4987	\|\| pVCpu->hm.s.enmShadowMode == PGMMODE_AMD64_NX,
4988	("enmShadowMode=%u\n", pVCpu->hm.s.enmShadowMode));
4989	if ((u64GuestEfer & MSR_K6_EFER_NXE) != (u64HostEfer & MSR_K6_EFER_NXE))
4990	{
4991	/* Verify that the host is NX capable. */
4992	Assert(pVCpu->CTX_SUFF(pVM)->cpum.ro.HostFeatures.fNoExecute);
4993	return true;
4994	}
4995	}
4996
4997	return false;
4998	#endif
4999	}
5000
5001
5002	/**
5003	* Exports the guest state with appropriate VM-entry and VM-exit controls in the
5004	* VMCS.
5005	*
5006	* This is typically required when the guest changes paging mode.
5007	*
5008	* @returns VBox status code.
5009	* @param pVCpu The cross context virtual CPU structure.
5010	* @param pVmxTransient The VMX-transient structure.
5011	*
5012	* @remarks Requires EFER.
5013	* @remarks No-long-jump zone!!!
5014	*/
5015	static int hmR0VmxExportGuestEntryExitCtls(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5016	{
5017	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_VMX_ENTRY_EXIT_CTLS)
5018	{
5019	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
5020	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
5021
5022	/*
5023	* VM-entry controls.
5024	*/
5025	{
5026	uint32_t fVal = g_HmMsrs.u.vmx.EntryCtls.n.allowed0; /* Bits set here must be set in the VMCS. */
5027	uint32_t const fZap = g_HmMsrs.u.vmx.EntryCtls.n.allowed1; /* Bits cleared here must be cleared in the VMCS. */
5028
5029	/*
5030	* Load the guest debug controls (DR7 and IA32_DEBUGCTL MSR) on VM-entry.
5031	* The first VT-x capable CPUs only supported the 1-setting of this bit.
5032	*
5033	* For nested-guests, this is a mandatory VM-entry control. It's also
5034	* required because we do not want to leak host bits to the nested-guest.
5035	*/
5036	fVal \|= VMX_ENTRY_CTLS_LOAD_DEBUG;
5037
5038	/*
5039	* Set if the guest is in long mode. This will set/clear the EFER.LMA bit on VM-entry.
5040	*
5041	* For nested-guests, the "IA-32e mode guest" control we initialize with what is
5042	* required to get the nested-guest working with hardware-assisted VMX execution.
5043	* It depends on the nested-guest's IA32_EFER.LMA bit. Remember, a nested hypervisor
5044	* can skip intercepting changes to the EFER MSR. This is why it needs to be done
5045	* here rather than while merging the guest VMCS controls.
5046	*/
5047	if (CPUMIsGuestInLongModeEx(&pVCpu->cpum.GstCtx))
5048	{
5049	Assert(pVCpu->cpum.GstCtx.msrEFER & MSR_K6_EFER_LME);
5050	fVal \|= VMX_ENTRY_CTLS_IA32E_MODE_GUEST;
5051	}
5052	else
5053	Assert(!(fVal & VMX_ENTRY_CTLS_IA32E_MODE_GUEST));
5054
5055	/*
5056	* If the CPU supports the newer VMCS controls for managing guest/host EFER, use it.
5057	*
5058	* For nested-guests, we use the "load IA32_EFER" if the hardware supports it,
5059	* regardless of whether the nested-guest VMCS specifies it because we are free to
5060	* load whatever MSRs we require and we do not need to modify the guest visible copy
5061	* of the VM-entry MSR load area.
5062	*/
5063	if ( g_fHmVmxSupportsVmcsEfer
5064	&& hmR0VmxShouldSwapEferMsr(pVCpu, pVmxTransient))
5065	fVal \|= VMX_ENTRY_CTLS_LOAD_EFER_MSR;
5066	else
5067	Assert(!(fVal & VMX_ENTRY_CTLS_LOAD_EFER_MSR));
5068
5069	/*
5070	* The following should -not- be set (since we're not in SMM mode):
5071	* - VMX_ENTRY_CTLS_ENTRY_TO_SMM
5072	* - VMX_ENTRY_CTLS_DEACTIVATE_DUAL_MON
5073	*/
5074
5075	/** @todo VMX_ENTRY_CTLS_LOAD_PERF_MSR,
5076	* VMX_ENTRY_CTLS_LOAD_PAT_MSR. */
5077
5078	if ((fVal & fZap) == fVal)
5079	{ /* likely */ }
5080	else
5081	{
5082	Log4Func(("Invalid VM-entry controls combo! Cpu=%#RX32 fVal=%#RX32 fZap=%#RX32\n",
5083	g_HmMsrs.u.vmx.EntryCtls.n.allowed0, fVal, fZap));
5084	pVCpu->hm.s.u32HMError = VMX_UFC_CTRL_ENTRY;
5085	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
5086	}
5087
5088	/* Commit it to the VMCS. */
5089	if (pVmcsInfo->u32EntryCtls != fVal)
5090	{
5091	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY, fVal);
5092	AssertRC(rc);
5093	pVmcsInfo->u32EntryCtls = fVal;
5094	}
5095	}
5096
5097	/*
5098	* VM-exit controls.
5099	*/
5100	{
5101	uint32_t fVal = g_HmMsrs.u.vmx.ExitCtls.n.allowed0; /* Bits set here must be set in the VMCS. */
5102	uint32_t const fZap = g_HmMsrs.u.vmx.ExitCtls.n.allowed1; /* Bits cleared here must be cleared in the VMCS. */
5103
5104	/*
5105	* Save debug controls (DR7 & IA32_DEBUGCTL_MSR). The first VT-x CPUs only
5106	* supported the 1-setting of this bit.
5107	*
5108	* For nested-guests, we set the "save debug controls" as the converse
5109	* "load debug controls" is mandatory for nested-guests anyway.
5110	*/
5111	fVal \|= VMX_EXIT_CTLS_SAVE_DEBUG;
5112
5113	/*
5114	* Set the host long mode active (EFER.LMA) bit (which Intel calls
5115	* "Host address-space size") if necessary. On VM-exit, VT-x sets both the
5116	* host EFER.LMA and EFER.LME bit to this value. See assertion in
5117	* hmR0VmxExportHostMsrs().
5118	*
5119	* For nested-guests, we always set this bit as we do not support 32-bit
5120	* hosts.
5121	*/
5122	fVal \|= VMX_EXIT_CTLS_HOST_ADDR_SPACE_SIZE;
5123
5124	/*
5125	* If the VMCS EFER MSR fields are supported by the hardware, we use it.
5126	*
5127	* For nested-guests, we should use the "save IA32_EFER" control if we also
5128	* used the "load IA32_EFER" control while exporting VM-entry controls.
5129	*/
5130	if ( g_fHmVmxSupportsVmcsEfer
5131	&& hmR0VmxShouldSwapEferMsr(pVCpu, pVmxTransient))
5132	{
5133	fVal \|= VMX_EXIT_CTLS_SAVE_EFER_MSR
5134	\| VMX_EXIT_CTLS_LOAD_EFER_MSR;
5135	}
5136
5137	/*
5138	* Enable saving of the VMX-preemption timer value on VM-exit.
5139	* For nested-guests, currently not exposed/used.
5140	*/
5141	/** @todo r=bird: Measure performance hit because of this vs. always rewriting
5142	* the timer value. */
5143	if (pVM->hmr0.s.vmx.fUsePreemptTimer)
5144	{
5145	Assert(g_HmMsrs.u.vmx.ExitCtls.n.allowed1 & VMX_EXIT_CTLS_SAVE_PREEMPT_TIMER);
5146	fVal \|= VMX_EXIT_CTLS_SAVE_PREEMPT_TIMER;
5147	}
5148
5149	/* Don't acknowledge external interrupts on VM-exit. We want to let the host do that. */
5150	Assert(!(fVal & VMX_EXIT_CTLS_ACK_EXT_INT));
5151
5152	/** @todo VMX_EXIT_CTLS_LOAD_PERF_MSR,
5153	* VMX_EXIT_CTLS_SAVE_PAT_MSR,
5154	* VMX_EXIT_CTLS_LOAD_PAT_MSR. */
5155
5156	if ((fVal & fZap) == fVal)
5157	{ /* likely */ }
5158	else
5159	{
5160	Log4Func(("Invalid VM-exit controls combo! cpu=%#RX32 fVal=%#RX32 fZap=%R#X32\n",
5161	g_HmMsrs.u.vmx.ExitCtls.n.allowed0, fVal, fZap));
5162	pVCpu->hm.s.u32HMError = VMX_UFC_CTRL_EXIT;
5163	return VERR_HM_UNSUPPORTED_CPU_FEATURE_COMBO;
5164	}
5165
5166	/* Commit it to the VMCS. */
5167	if (pVmcsInfo->u32ExitCtls != fVal)
5168	{
5169	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXIT, fVal);
5170	AssertRC(rc);
5171	pVmcsInfo->u32ExitCtls = fVal;
5172	}
5173	}
5174
5175	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_VMX_ENTRY_EXIT_CTLS);
5176	}
5177	return VINF_SUCCESS;
5178	}
5179
5180
5181	/**
5182	* Sets the TPR threshold in the VMCS.
5183	*
5184	* @param pVmcsInfo The VMCS info. object.
5185	* @param u32TprThreshold The TPR threshold (task-priority class only).
5186	*/
5187	DECLINLINE(void) hmR0VmxApicSetTprThreshold(PVMXVMCSINFO pVmcsInfo, uint32_t u32TprThreshold)
5188	{
5189	Assert(!(u32TprThreshold & ~VMX_TPR_THRESHOLD_MASK)); /* Bits 31:4 MBZ. */
5190	Assert(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW);
5191	RT_NOREF(pVmcsInfo);
5192	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_TPR_THRESHOLD, u32TprThreshold);
5193	AssertRC(rc);
5194	}
5195
5196
5197	/**
5198	* Exports the guest APIC TPR state into the VMCS.
5199	*
5200	* @param pVCpu The cross context virtual CPU structure.
5201	* @param pVmxTransient The VMX-transient structure.
5202	*
5203	* @remarks No-long-jump zone!!!
5204	*/
5205	static void hmR0VmxExportGuestApicTpr(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5206	{
5207	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_APIC_TPR)
5208	{
5209	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_APIC_TPR);
5210
5211	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
5212	if (!pVmxTransient->fIsNestedGuest)
5213	{
5214	if ( PDMHasApic(pVCpu->CTX_SUFF(pVM))
5215	&& APICIsEnabled(pVCpu))
5216	{
5217	/*
5218	* Setup TPR shadowing.
5219	*/
5220	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
5221	{
5222	bool fPendingIntr = false;
5223	uint8_t u8Tpr = 0;
5224	uint8_t u8PendingIntr = 0;
5225	int rc = APICGetTpr(pVCpu, &u8Tpr, &fPendingIntr, &u8PendingIntr);
5226	AssertRC(rc);
5227
5228	/*
5229	* If there are interrupts pending but masked by the TPR, instruct VT-x to
5230	* cause a TPR-below-threshold VM-exit when the guest lowers its TPR below the
5231	* priority of the pending interrupt so we can deliver the interrupt. If there
5232	* are no interrupts pending, set threshold to 0 to not cause any
5233	* TPR-below-threshold VM-exits.
5234	*/
5235	uint32_t u32TprThreshold = 0;
5236	if (fPendingIntr)
5237	{
5238	/* Bits 3:0 of the TPR threshold field correspond to bits 7:4 of the TPR
5239	(which is the Task-Priority Class). */
5240	const uint8_t u8PendingPriority = u8PendingIntr >> 4;
5241	const uint8_t u8TprPriority = u8Tpr >> 4;
5242	if (u8PendingPriority <= u8TprPriority)
5243	u32TprThreshold = u8PendingPriority;
5244	}
5245
5246	hmR0VmxApicSetTprThreshold(pVmcsInfo, u32TprThreshold);
5247	}
5248	}
5249	}
5250	/* else: the TPR threshold has already been updated while merging the nested-guest VMCS. */
5251	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_APIC_TPR);
5252	}
5253	}
5254
5255
5256	/**
5257	* Gets the guest interruptibility-state and updates related force-flags.
5258	*
5259	* @returns Guest's interruptibility-state.
5260	* @param pVCpu The cross context virtual CPU structure.
5261	*
5262	* @remarks No-long-jump zone!!!
5263	*/
5264	static uint32_t hmR0VmxGetGuestIntrStateAndUpdateFFs(PVMCPUCC pVCpu)
5265	{
5266	/*
5267	* Check if we should inhibit interrupt delivery due to instructions like STI and MOV SS.
5268	*/
5269	uint32_t fIntrState = 0;
5270	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
5271	{
5272	/* If inhibition is active, RIP and RFLAGS should've been imported from the VMCS already. */
5273	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS);
5274
5275	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
5276	if (pCtx->rip == EMGetInhibitInterruptsPC(pVCpu))
5277	{
5278	if (pCtx->eflags.Bits.u1IF)
5279	fIntrState = VMX_VMCS_GUEST_INT_STATE_BLOCK_STI;
5280	else
5281	fIntrState = VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS;
5282	}
5283	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
5284	{
5285	/*
5286	* We can clear the inhibit force flag as even if we go back to the recompiler
5287	* without executing guest code in VT-x, the flag's condition to be cleared is
5288	* met and thus the cleared state is correct.
5289	*/
5290	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
5291	}
5292	}
5293
5294	/*
5295	* Check if we should inhibit NMI delivery.
5296	*/
5297	if (CPUMIsGuestNmiBlocking(pVCpu))
5298	fIntrState \|= VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI;
5299
5300	/*
5301	* Validate.
5302	*/
5303	#ifdef VBOX_STRICT
5304	/* We don't support block-by-SMI yet.*/
5305	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_SMI));
5306
5307	/* Block-by-STI must not be set when interrupts are disabled. */
5308	if (fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)
5309	{
5310	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RFLAGS);
5311	Assert(pVCpu->cpum.GstCtx.eflags.u & X86_EFL_IF);
5312	}
5313	#endif
5314
5315	return fIntrState;
5316	}
5317
5318
5319	/**
5320	* Exports the exception intercepts required for guest execution in the VMCS.
5321	*
5322	* @param pVCpu The cross context virtual CPU structure.
5323	* @param pVmxTransient The VMX-transient structure.
5324	*
5325	* @remarks No-long-jump zone!!!
5326	*/
5327	static void hmR0VmxExportGuestXcptIntercepts(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5328	{
5329	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_VMX_XCPT_INTERCEPTS)
5330	{
5331	/* When executing a nested-guest, we do not need to trap GIM hypercalls by intercepting #UD. */
5332	if ( !pVmxTransient->fIsNestedGuest
5333	&& pVCpu->hm.s.fGIMTrapXcptUD)
5334	hmR0VmxAddXcptIntercept(pVmxTransient, X86_XCPT_UD);
5335	else
5336	hmR0VmxRemoveXcptIntercept(pVCpu, pVmxTransient, X86_XCPT_UD);
5337
5338	/* Other exception intercepts are handled elsewhere, e.g. while exporting guest CR0. */
5339	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_VMX_XCPT_INTERCEPTS);
5340	}
5341	}
5342
5343
5344	/**
5345	* Exports the guest's RIP into the guest-state area in the VMCS.
5346	*
5347	* @param pVCpu The cross context virtual CPU structure.
5348	*
5349	* @remarks No-long-jump zone!!!
5350	*/
5351	static void hmR0VmxExportGuestRip(PVMCPUCC pVCpu)
5352	{
5353	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_RIP)
5354	{
5355	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RIP);
5356
5357	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_RIP, pVCpu->cpum.GstCtx.rip);
5358	AssertRC(rc);
5359
5360	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_RIP);
5361	Log4Func(("rip=%#RX64\n", pVCpu->cpum.GstCtx.rip));
5362	}
5363	}
5364
5365
5366	/**
5367	* Exports the guest's RSP into the guest-state area in the VMCS.
5368	*
5369	* @param pVCpu The cross context virtual CPU structure.
5370	*
5371	* @remarks No-long-jump zone!!!
5372	*/
5373	static void hmR0VmxExportGuestRsp(PVMCPUCC pVCpu)
5374	{
5375	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_RSP)
5376	{
5377	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RSP);
5378
5379	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_RSP, pVCpu->cpum.GstCtx.rsp);
5380	AssertRC(rc);
5381
5382	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_RSP);
5383	Log4Func(("rsp=%#RX64\n", pVCpu->cpum.GstCtx.rsp));
5384	}
5385	}
5386
5387
5388	/**
5389	* Exports the guest's RFLAGS into the guest-state area in the VMCS.
5390	*
5391	* @param pVCpu The cross context virtual CPU structure.
5392	* @param pVmxTransient The VMX-transient structure.
5393	*
5394	* @remarks No-long-jump zone!!!
5395	*/
5396	static void hmR0VmxExportGuestRflags(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5397	{
5398	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_RFLAGS)
5399	{
5400	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RFLAGS);
5401
5402	/* Intel spec. 2.3.1 "System Flags and Fields in IA-32e Mode" claims the upper 32-bits of RFLAGS are reserved (MBZ).
5403	Let us assert it as such and use 32-bit VMWRITE. */
5404	Assert(!RT_HI_U32(pVCpu->cpum.GstCtx.rflags.u64));
5405	X86EFLAGS fEFlags = pVCpu->cpum.GstCtx.eflags;
5406	Assert(fEFlags.u32 & X86_EFL_RA1_MASK);
5407	Assert(!(fEFlags.u32 & ~(X86_EFL_1 \| X86_EFL_LIVE_MASK)));
5408
5409	/*
5410	* If we're emulating real-mode using Virtual 8086 mode, save the real-mode eflags so
5411	* we can restore them on VM-exit. Modify the real-mode guest's eflags so that VT-x
5412	* can run the real-mode guest code under Virtual 8086 mode.
5413	*/
5414	PVMXVMCSINFOSHARED pVmcsInfo = pVmxTransient->pVmcsInfo->pShared;
5415	if (pVmcsInfo->RealMode.fRealOnV86Active)
5416	{
5417	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.vmx.pRealModeTSS);
5418	Assert(PDMVmmDevHeapIsEnabled(pVCpu->CTX_SUFF(pVM)));
5419	Assert(!pVmxTransient->fIsNestedGuest);
5420	pVmcsInfo->RealMode.Eflags.u32 = fEFlags.u32; /* Save the original eflags of the real-mode guest. */
5421	fEFlags.Bits.u1VM = 1; /* Set the Virtual 8086 mode bit. */
5422	fEFlags.Bits.u2IOPL = 0; /* Change IOPL to 0, otherwise certain instructions won't fault. */
5423	}
5424
5425	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_RFLAGS, fEFlags.u32);
5426	AssertRC(rc);
5427
5428	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_RFLAGS);
5429	Log4Func(("eflags=%#RX32\n", fEFlags.u32));
5430	}
5431	}
5432
5433
5434	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
5435	/**
5436	* Copies the nested-guest VMCS to the shadow VMCS.
5437	*
5438	* @returns VBox status code.
5439	* @param pVCpu The cross context virtual CPU structure.
5440	* @param pVmcsInfo The VMCS info. object.
5441	*
5442	* @remarks No-long-jump zone!!!
5443	*/
5444	static int hmR0VmxCopyNstGstToShadowVmcs(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
5445	{
5446	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
5447	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
5448
5449	/*
5450	* Disable interrupts so we don't get preempted while the shadow VMCS is the
5451	* current VMCS, as we may try saving guest lazy MSRs.
5452	*
5453	* Strictly speaking the lazy MSRs are not in the VMCS, but I'd rather not risk
5454	* calling the import VMCS code which is currently performing the guest MSR reads
5455	* (on 64-bit hosts) and accessing the auto-load/store MSR area on 32-bit hosts
5456	* and the rest of the VMX leave session machinery.
5457	*/
5458	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
5459
5460	int rc = hmR0VmxLoadShadowVmcs(pVmcsInfo);
5461	if (RT_SUCCESS(rc))
5462	{
5463	/*
5464	* Copy all guest read/write VMCS fields.
5465	*
5466	* We don't check for VMWRITE failures here for performance reasons and
5467	* because they are not expected to fail, barring irrecoverable conditions
5468	* like hardware errors.
5469	*/
5470	uint32_t const cShadowVmcsFields = pVM->hmr0.s.vmx.cShadowVmcsFields;
5471	for (uint32_t i = 0; i < cShadowVmcsFields; i++)
5472	{
5473	uint64_t u64Val;
5474	uint32_t const uVmcsField = pVM->hmr0.s.vmx.paShadowVmcsFields[i];
5475	IEMReadVmxVmcsField(pVmcsNstGst, uVmcsField, &u64Val);
5476	VMXWriteVmcs64(uVmcsField, u64Val);
5477	}
5478
5479	/*
5480	* If the host CPU supports writing all VMCS fields, copy the guest read-only
5481	* VMCS fields, so the guest can VMREAD them without causing a VM-exit.
5482	*/
5483	if (g_HmMsrs.u.vmx.u64Misc & VMX_MISC_VMWRITE_ALL)
5484	{
5485	uint32_t const cShadowVmcsRoFields = pVM->hmr0.s.vmx.cShadowVmcsRoFields;
5486	for (uint32_t i = 0; i < cShadowVmcsRoFields; i++)
5487	{
5488	uint64_t u64Val;
5489	uint32_t const uVmcsField = pVM->hmr0.s.vmx.paShadowVmcsRoFields[i];
5490	IEMReadVmxVmcsField(pVmcsNstGst, uVmcsField, &u64Val);
5491	VMXWriteVmcs64(uVmcsField, u64Val);
5492	}
5493	}
5494
5495	rc = hmR0VmxClearShadowVmcs(pVmcsInfo);
5496	rc \|= hmR0VmxLoadVmcs(pVmcsInfo);
5497	}
5498
5499	ASMSetFlags(fEFlags);
5500	return rc;
5501	}
5502
5503
5504	/**
5505	* Copies the shadow VMCS to the nested-guest VMCS.
5506	*
5507	* @returns VBox status code.
5508	* @param pVCpu The cross context virtual CPU structure.
5509	* @param pVmcsInfo The VMCS info. object.
5510	*
5511	* @remarks Called with interrupts disabled.
5512	*/
5513	static int hmR0VmxCopyShadowToNstGstVmcs(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
5514	{
5515	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
5516	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
5517	PVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
5518
5519	int rc = hmR0VmxLoadShadowVmcs(pVmcsInfo);
5520	if (RT_SUCCESS(rc))
5521	{
5522	/*
5523	* Copy guest read/write fields from the shadow VMCS.
5524	* Guest read-only fields cannot be modified, so no need to copy them.
5525	*
5526	* We don't check for VMREAD failures here for performance reasons and
5527	* because they are not expected to fail, barring irrecoverable conditions
5528	* like hardware errors.
5529	*/
5530	uint32_t const cShadowVmcsFields = pVM->hmr0.s.vmx.cShadowVmcsFields;
5531	for (uint32_t i = 0; i < cShadowVmcsFields; i++)
5532	{
5533	uint64_t u64Val;
5534	uint32_t const uVmcsField = pVM->hmr0.s.vmx.paShadowVmcsFields[i];
5535	VMXReadVmcs64(uVmcsField, &u64Val);
5536	IEMWriteVmxVmcsField(pVmcsNstGst, uVmcsField, u64Val);
5537	}
5538
5539	rc = hmR0VmxClearShadowVmcs(pVmcsInfo);
5540	rc \|= hmR0VmxLoadVmcs(pVmcsInfo);
5541	}
5542	return rc;
5543	}
5544
5545
5546	/**
5547	* Enables VMCS shadowing for the given VMCS info. object.
5548	*
5549	* @param pVmcsInfo The VMCS info. object.
5550	*
5551	* @remarks No-long-jump zone!!!
5552	*/
5553	static void hmR0VmxEnableVmcsShadowing(PVMXVMCSINFO pVmcsInfo)
5554	{
5555	uint32_t uProcCtls2 = pVmcsInfo->u32ProcCtls2;
5556	if (!(uProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING))
5557	{
5558	Assert(pVmcsInfo->HCPhysShadowVmcs != 0 && pVmcsInfo->HCPhysShadowVmcs != NIL_RTHCPHYS);
5559	uProcCtls2 \|= VMX_PROC_CTLS2_VMCS_SHADOWING;
5560	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, uProcCtls2); AssertRC(rc);
5561	rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_VMCS_LINK_PTR_FULL, pVmcsInfo->HCPhysShadowVmcs); AssertRC(rc);
5562	pVmcsInfo->u32ProcCtls2 = uProcCtls2;
5563	pVmcsInfo->u64VmcsLinkPtr = pVmcsInfo->HCPhysShadowVmcs;
5564	Log4Func(("Enabled\n"));
5565	}
5566	}
5567
5568
5569	/**
5570	* Disables VMCS shadowing for the given VMCS info. object.
5571	*
5572	* @param pVmcsInfo The VMCS info. object.
5573	*
5574	* @remarks No-long-jump zone!!!
5575	*/
5576	static void hmR0VmxDisableVmcsShadowing(PVMXVMCSINFO pVmcsInfo)
5577	{
5578	/*
5579	* We want all VMREAD and VMWRITE instructions to cause VM-exits, so we clear the
5580	* VMCS shadowing control. However, VM-entry requires the shadow VMCS indicator bit
5581	* to match the VMCS shadowing control if the VMCS link pointer is not NIL_RTHCPHYS.
5582	* Hence, we must also reset the VMCS link pointer to ensure VM-entry does not fail.
5583	*
5584	* See Intel spec. 26.2.1.1 "VM-Execution Control Fields".
5585	* See Intel spec. 26.3.1.5 "Checks on Guest Non-Register State".
5586	*/
5587	uint32_t uProcCtls2 = pVmcsInfo->u32ProcCtls2;
5588	if (uProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING)
5589	{
5590	uProcCtls2 &= ~VMX_PROC_CTLS2_VMCS_SHADOWING;
5591	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, uProcCtls2); AssertRC(rc);
5592	rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_VMCS_LINK_PTR_FULL, NIL_RTHCPHYS); AssertRC(rc);
5593	pVmcsInfo->u32ProcCtls2 = uProcCtls2;
5594	pVmcsInfo->u64VmcsLinkPtr = NIL_RTHCPHYS;
5595	Log4Func(("Disabled\n"));
5596	}
5597	}
5598	#endif
5599
5600
5601	/**
5602	* Exports the guest hardware-virtualization state.
5603	*
5604	* @returns VBox status code.
5605	* @param pVCpu The cross context virtual CPU structure.
5606	* @param pVmxTransient The VMX-transient structure.
5607	*
5608	* @remarks No-long-jump zone!!!
5609	*/
5610	static int hmR0VmxExportGuestHwvirtState(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5611	{
5612	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_HWVIRT)
5613	{
5614	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
5615	/*
5616	* Check if the VMX feature is exposed to the guest and if the host CPU supports
5617	* VMCS shadowing.
5618	*/
5619	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fUseVmcsShadowing)
5620	{
5621	/*
5622	* If the nested hypervisor has loaded a current VMCS and is in VMX root mode,
5623	* copy the nested hypervisor's current VMCS into the shadow VMCS and enable
5624	* VMCS shadowing to skip intercepting some or all VMREAD/VMWRITE VM-exits.
5625	*
5626	* We check for VMX root mode here in case the guest executes VMXOFF without
5627	* clearing the current VMCS pointer and our VMXOFF instruction emulation does
5628	* not clear the current VMCS pointer.
5629	*/
5630	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
5631	if ( CPUMIsGuestInVmxRootMode(&pVCpu->cpum.GstCtx)
5632	&& !CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx)
5633	&& CPUMIsGuestVmxCurrentVmcsValid(&pVCpu->cpum.GstCtx))
5634	{
5635	/* Paranoia. */
5636	Assert(!pVmxTransient->fIsNestedGuest);
5637
5638	/*
5639	* For performance reasons, also check if the nested hypervisor's current VMCS
5640	* was newly loaded or modified before copying it to the shadow VMCS.
5641	*/
5642	if (!pVCpu->hm.s.vmx.fCopiedNstGstToShadowVmcs)
5643	{
5644	int rc = hmR0VmxCopyNstGstToShadowVmcs(pVCpu, pVmcsInfo);
5645	AssertRCReturn(rc, rc);
5646	pVCpu->hm.s.vmx.fCopiedNstGstToShadowVmcs = true;
5647	}
5648	hmR0VmxEnableVmcsShadowing(pVmcsInfo);
5649	}
5650	else
5651	hmR0VmxDisableVmcsShadowing(pVmcsInfo);
5652	}
5653	#else
5654	NOREF(pVmxTransient);
5655	#endif
5656	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_HWVIRT);
5657	}
5658	return VINF_SUCCESS;
5659	}
5660
5661
5662	/**
5663	* Exports the guest CR0 control register into the guest-state area in the VMCS.
5664	*
5665	* The guest FPU state is always pre-loaded hence we don't need to bother about
5666	* sharing FPU related CR0 bits between the guest and host.
5667	*
5668	* @returns VBox status code.
5669	* @param pVCpu The cross context virtual CPU structure.
5670	* @param pVmxTransient The VMX-transient structure.
5671	*
5672	* @remarks No-long-jump zone!!!
5673	*/
5674	static int hmR0VmxExportGuestCR0(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5675	{
5676	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_CR0)
5677	{
5678	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
5679	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
5680
5681	uint64_t fSetCr0 = g_HmMsrs.u.vmx.u64Cr0Fixed0;
5682	uint64_t const fZapCr0 = g_HmMsrs.u.vmx.u64Cr0Fixed1;
5683	if (pVM->hmr0.s.vmx.fUnrestrictedGuest)
5684	fSetCr0 &= ~(uint64_t)(X86_CR0_PE \| X86_CR0_PG);
5685	else
5686	Assert((fSetCr0 & (X86_CR0_PE \| X86_CR0_PG)) == (X86_CR0_PE \| X86_CR0_PG));
5687
5688	if (!pVmxTransient->fIsNestedGuest)
5689	{
5690	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0);
5691	uint64_t u64GuestCr0 = pVCpu->cpum.GstCtx.cr0;
5692	uint64_t const u64ShadowCr0 = u64GuestCr0;
5693	Assert(!RT_HI_U32(u64GuestCr0));
5694
5695	/*
5696	* Setup VT-x's view of the guest CR0.
5697	*/
5698	uint32_t uProcCtls = pVmcsInfo->u32ProcCtls;
5699	if (pVM->hmr0.s.fNestedPaging)
5700	{
5701	if (CPUMIsGuestPagingEnabled(pVCpu))
5702	{
5703	/* The guest has paging enabled, let it access CR3 without causing a VM-exit if supported. */
5704	uProcCtls &= ~( VMX_PROC_CTLS_CR3_LOAD_EXIT
5705	\| VMX_PROC_CTLS_CR3_STORE_EXIT);
5706	}
5707	else
5708	{
5709	/* The guest doesn't have paging enabled, make CR3 access cause a VM-exit to update our shadow. */
5710	uProcCtls \|= VMX_PROC_CTLS_CR3_LOAD_EXIT
5711	\| VMX_PROC_CTLS_CR3_STORE_EXIT;
5712	}
5713
5714	/* If we have unrestricted guest execution, we never have to intercept CR3 reads. */
5715	if (pVM->hmr0.s.vmx.fUnrestrictedGuest)
5716	uProcCtls &= ~VMX_PROC_CTLS_CR3_STORE_EXIT;
5717	}
5718	else
5719	{
5720	/* Guest CPL 0 writes to its read-only pages should cause a #PF VM-exit. */
5721	u64GuestCr0 \|= X86_CR0_WP;
5722	}
5723
5724	/*
5725	* Guest FPU bits.
5726	*
5727	* Since we pre-load the guest FPU always before VM-entry there is no need to track lazy state
5728	* using CR0.TS.
5729	*
5730	* Intel spec. 23.8 "Restrictions on VMX operation" mentions that CR0.NE bit must always be
5731	* set on the first CPUs to support VT-x and no mention of with regards to UX in VM-entry checks.
5732	*/
5733	u64GuestCr0 \|= X86_CR0_NE;
5734
5735	/* If CR0.NE isn't set, we need to intercept #MF exceptions and report them to the guest differently. */
5736	bool const fInterceptMF = !(u64ShadowCr0 & X86_CR0_NE);
5737
5738	/*
5739	* Update exception intercepts.
5740	*/
5741	uint32_t uXcptBitmap = pVmcsInfo->u32XcptBitmap;
5742	if (pVmcsInfo->pShared->RealMode.fRealOnV86Active)
5743	{
5744	Assert(PDMVmmDevHeapIsEnabled(pVM));
5745	Assert(pVM->hm.s.vmx.pRealModeTSS);
5746	uXcptBitmap \|= HMVMX_REAL_MODE_XCPT_MASK;
5747	}
5748	else
5749	{
5750	/* For now, cleared here as mode-switches can happen outside HM/VT-x. See @bugref{7626#c11}. */
5751	uXcptBitmap &= ~HMVMX_REAL_MODE_XCPT_MASK;
5752	if (fInterceptMF)
5753	uXcptBitmap \|= RT_BIT(X86_XCPT_MF);
5754	}
5755
5756	/* Additional intercepts for debugging, define these yourself explicitly. */
5757	#ifdef HMVMX_ALWAYS_TRAP_ALL_XCPTS
5758	uXcptBitmap \|= 0
5759	\| RT_BIT(X86_XCPT_BP)
5760	\| RT_BIT(X86_XCPT_DE)
5761	\| RT_BIT(X86_XCPT_NM)
5762	\| RT_BIT(X86_XCPT_TS)
5763	\| RT_BIT(X86_XCPT_UD)
5764	\| RT_BIT(X86_XCPT_NP)
5765	\| RT_BIT(X86_XCPT_SS)
5766	\| RT_BIT(X86_XCPT_GP)
5767	\| RT_BIT(X86_XCPT_PF)
5768	\| RT_BIT(X86_XCPT_MF)
5769	;
5770	#elif defined(HMVMX_ALWAYS_TRAP_PF)
5771	uXcptBitmap \|= RT_BIT(X86_XCPT_PF);
5772	#endif
5773	if (pVCpu->hm.s.fTrapXcptGpForLovelyMesaDrv)
5774	uXcptBitmap \|= RT_BIT(X86_XCPT_GP);
5775	Assert(pVM->hmr0.s.fNestedPaging \|\| (uXcptBitmap & RT_BIT(X86_XCPT_PF)));
5776
5777	/* Apply the hardware specified CR0 fixed bits and enable caching. */
5778	u64GuestCr0 \|= fSetCr0;
5779	u64GuestCr0 &= fZapCr0;
5780	u64GuestCr0 &= ~(uint64_t)(X86_CR0_CD \| X86_CR0_NW);
5781
5782	/* Commit the CR0 and related fields to the guest VMCS. */
5783	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_CR0, u64GuestCr0); AssertRC(rc);
5784	rc = VMXWriteVmcsNw(VMX_VMCS_CTRL_CR0_READ_SHADOW, u64ShadowCr0); AssertRC(rc);
5785	if (uProcCtls != pVmcsInfo->u32ProcCtls)
5786	{
5787	rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, uProcCtls);
5788	AssertRC(rc);
5789	}
5790	if (uXcptBitmap != pVmcsInfo->u32XcptBitmap)
5791	{
5792	rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, uXcptBitmap);
5793	AssertRC(rc);
5794	}
5795
5796	/* Update our caches. */
5797	pVmcsInfo->u32ProcCtls = uProcCtls;
5798	pVmcsInfo->u32XcptBitmap = uXcptBitmap;
5799
5800	Log4Func(("cr0=%#RX64 shadow=%#RX64 set=%#RX64 zap=%#RX64\n", u64GuestCr0, u64ShadowCr0, fSetCr0, fZapCr0));
5801	}
5802	else
5803	{
5804	/*
5805	* With nested-guests, we may have extended the guest/host mask here since we
5806	* merged in the outer guest's mask. Thus, the merged mask can include more bits
5807	* (to read from the nested-guest CR0 read-shadow) than the nested hypervisor
5808	* originally supplied. We must copy those bits from the nested-guest CR0 into
5809	* the nested-guest CR0 read-shadow.
5810	*/
5811	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0);
5812	uint64_t u64GuestCr0 = pVCpu->cpum.GstCtx.cr0;
5813	uint64_t const u64ShadowCr0 = CPUMGetGuestVmxMaskedCr0(&pVCpu->cpum.GstCtx, pVmcsInfo->u64Cr0Mask);
5814	Assert(!RT_HI_U32(u64GuestCr0));
5815	Assert(u64GuestCr0 & X86_CR0_NE);
5816
5817	/* Apply the hardware specified CR0 fixed bits and enable caching. */
5818	u64GuestCr0 \|= fSetCr0;
5819	u64GuestCr0 &= fZapCr0;
5820	u64GuestCr0 &= ~(uint64_t)(X86_CR0_CD \| X86_CR0_NW);
5821
5822	/* Commit the CR0 and CR0 read-shadow to the nested-guest VMCS. */
5823	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_CR0, u64GuestCr0); AssertRC(rc);
5824	rc = VMXWriteVmcsNw(VMX_VMCS_CTRL_CR0_READ_SHADOW, u64ShadowCr0); AssertRC(rc);
5825
5826	Log4Func(("cr0=%#RX64 shadow=%#RX64 (set=%#RX64 zap=%#RX64)\n", u64GuestCr0, u64ShadowCr0, fSetCr0, fZapCr0));
5827	}
5828
5829	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_CR0);
5830	}
5831
5832	return VINF_SUCCESS;
5833	}
5834
5835
5836	/**
5837	* Exports the guest control registers (CR3, CR4) into the guest-state area
5838	* in the VMCS.
5839	*
5840	* @returns VBox strict status code.
5841	* @retval VINF_EM_RESCHEDULE_REM if we try to emulate non-paged guest code
5842	* without unrestricted guest access and the VMMDev is not presently
5843	* mapped (e.g. EFI32).
5844	*
5845	* @param pVCpu The cross context virtual CPU structure.
5846	* @param pVmxTransient The VMX-transient structure.
5847	*
5848	* @remarks No-long-jump zone!!!
5849	*/
5850	static VBOXSTRICTRC hmR0VmxExportGuestCR3AndCR4(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
5851	{
5852	int rc = VINF_SUCCESS;
5853	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
5854
5855	/*
5856	* Guest CR2.
5857	* It's always loaded in the assembler code. Nothing to do here.
5858	*/
5859
5860	/*
5861	* Guest CR3.
5862	*/
5863	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_CR3)
5864	{
5865	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR3);
5866
5867	if (pVM->hmr0.s.fNestedPaging)
5868	{
5869	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
5870	pVmcsInfo->HCPhysEPTP = PGMGetHyperCR3(pVCpu);
5871
5872	/* Validate. See Intel spec. 28.2.2 "EPT Translation Mechanism" and 24.6.11 "Extended-Page-Table Pointer (EPTP)" */
5873	Assert(pVmcsInfo->HCPhysEPTP != NIL_RTHCPHYS);
5874	Assert(!(pVmcsInfo->HCPhysEPTP & UINT64_C(0xfff0000000000000)));
5875	Assert(!(pVmcsInfo->HCPhysEPTP & 0xfff));
5876
5877	/* VMX_EPT_MEMTYPE_WB support is already checked in hmR0VmxSetupTaggedTlb(). */
5878	pVmcsInfo->HCPhysEPTP \|= VMX_EPT_MEMTYPE_WB
5879	\| (VMX_EPT_PAGE_WALK_LENGTH_DEFAULT << VMX_EPT_PAGE_WALK_LENGTH_SHIFT);
5880
5881	/* Validate. See Intel spec. 26.2.1 "Checks on VMX Controls" */
5882	AssertMsg( ((pVmcsInfo->HCPhysEPTP >> 3) & 0x07) == 3 /* Bits 3:5 (EPT page walk length - 1) must be 3. */
5883	&& ((pVmcsInfo->HCPhysEPTP >> 7) & 0x1f) == 0, /* Bits 7:11 MBZ. */
5884	("EPTP %#RX64\n", pVmcsInfo->HCPhysEPTP));
5885	AssertMsg( !((pVmcsInfo->HCPhysEPTP >> 6) & 0x01) /* Bit 6 (EPT accessed & dirty bit). */
5886	\|\| (g_HmMsrs.u.vmx.u64EptVpidCaps & MSR_IA32_VMX_EPT_VPID_CAP_EPT_ACCESS_DIRTY),
5887	("EPTP accessed/dirty bit not supported by CPU but set %#RX64\n", pVmcsInfo->HCPhysEPTP));
5888
5889	rc = VMXWriteVmcs64(VMX_VMCS64_CTRL_EPTP_FULL, pVmcsInfo->HCPhysEPTP);
5890	AssertRC(rc);
5891
5892	uint64_t u64GuestCr3;
5893	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
5894	if ( pVM->hmr0.s.vmx.fUnrestrictedGuest
5895	\|\| CPUMIsGuestPagingEnabledEx(pCtx))
5896	{
5897	/* If the guest is in PAE mode, pass the PDPEs to VT-x using the VMCS fields. */
5898	if (CPUMIsGuestInPAEModeEx(pCtx))
5899	{
5900	rc = PGMGstGetPaePdpes(pVCpu, &pVCpu->hm.s.aPdpes[0]);
5901	AssertRC(rc);
5902	rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_PDPTE0_FULL, pVCpu->hm.s.aPdpes[0].u); AssertRC(rc);
5903	rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_PDPTE1_FULL, pVCpu->hm.s.aPdpes[1].u); AssertRC(rc);
5904	rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_PDPTE2_FULL, pVCpu->hm.s.aPdpes[2].u); AssertRC(rc);
5905	rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_PDPTE3_FULL, pVCpu->hm.s.aPdpes[3].u); AssertRC(rc);
5906	}
5907
5908	/*
5909	* The guest's view of its CR3 is unblemished with nested paging when the
5910	* guest is using paging or we have unrestricted guest execution to handle
5911	* the guest when it's not using paging.
5912	*/
5913	u64GuestCr3 = pCtx->cr3;
5914	}
5915	else
5916	{
5917	/*
5918	* The guest is not using paging, but the CPU (VT-x) has to. While the guest
5919	* thinks it accesses physical memory directly, we use our identity-mapped
5920	* page table to map guest-linear to guest-physical addresses. EPT takes care
5921	* of translating it to host-physical addresses.
5922	*/
5923	RTGCPHYS GCPhys;
5924	Assert(pVM->hm.s.vmx.pNonPagingModeEPTPageTable);
5925
5926	/* We obtain it here every time as the guest could have relocated this PCI region. */
5927	rc = PDMVmmDevHeapR3ToGCPhys(pVM, pVM->hm.s.vmx.pNonPagingModeEPTPageTable, &GCPhys);
5928	if (RT_SUCCESS(rc))
5929	{ /* likely */ }
5930	else if (rc == VERR_PDM_DEV_HEAP_R3_TO_GCPHYS)
5931	{
5932	Log4Func(("VERR_PDM_DEV_HEAP_R3_TO_GCPHYS -> VINF_EM_RESCHEDULE_REM\n"));
5933	return VINF_EM_RESCHEDULE_REM; /* We cannot execute now, switch to REM/IEM till the guest maps in VMMDev. */
5934	}
5935	else
5936	AssertMsgFailedReturn(("%Rrc\n", rc), rc);
5937
5938	u64GuestCr3 = GCPhys;
5939	}
5940
5941	Log4Func(("guest_cr3=%#RX64 (GstN)\n", u64GuestCr3));
5942	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_CR3, u64GuestCr3);
5943	AssertRC(rc);
5944	}
5945	else
5946	{
5947	Assert(!pVmxTransient->fIsNestedGuest);
5948	/* Non-nested paging case, just use the hypervisor's CR3. */
5949	RTHCPHYS const HCPhysGuestCr3 = PGMGetHyperCR3(pVCpu);
5950
5951	Log4Func(("guest_cr3=%#RX64 (HstN)\n", HCPhysGuestCr3));
5952	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_CR3, HCPhysGuestCr3);
5953	AssertRC(rc);
5954	}
5955
5956	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_CR3);
5957	}
5958
5959	/*
5960	* Guest CR4.
5961	* ASSUMES this is done everytime we get in from ring-3! (XCR0)
5962	*/
5963	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_CR4)
5964	{
5965	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
5966	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
5967
5968	uint64_t const fSetCr4 = g_HmMsrs.u.vmx.u64Cr4Fixed0;
5969	uint64_t const fZapCr4 = g_HmMsrs.u.vmx.u64Cr4Fixed1;
5970
5971	/*
5972	* With nested-guests, we may have extended the guest/host mask here (since we
5973	* merged in the outer guest's mask, see hmR0VmxMergeVmcsNested). This means, the
5974	* mask can include more bits (to read from the nested-guest CR4 read-shadow) than
5975	* the nested hypervisor originally supplied. Thus, we should, in essence, copy
5976	* those bits from the nested-guest CR4 into the nested-guest CR4 read-shadow.
5977	*/
5978	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR4);
5979	uint64_t u64GuestCr4 = pCtx->cr4;
5980	uint64_t const u64ShadowCr4 = !pVmxTransient->fIsNestedGuest
5981	? pCtx->cr4
5982	: CPUMGetGuestVmxMaskedCr4(pCtx, pVmcsInfo->u64Cr4Mask);
5983	Assert(!RT_HI_U32(u64GuestCr4));
5984
5985	/*
5986	* Setup VT-x's view of the guest CR4.
5987	*
5988	* If we're emulating real-mode using virtual-8086 mode, we want to redirect software
5989	* interrupts to the 8086 program interrupt handler. Clear the VME bit (the interrupt
5990	* redirection bitmap is already all 0, see hmR3InitFinalizeR0())
5991	*
5992	* See Intel spec. 20.2 "Software Interrupt Handling Methods While in Virtual-8086 Mode".
5993	*/
5994	if (pVmcsInfo->pShared->RealMode.fRealOnV86Active)
5995	{
5996	Assert(pVM->hm.s.vmx.pRealModeTSS);
5997	Assert(PDMVmmDevHeapIsEnabled(pVM));
5998	u64GuestCr4 &= ~(uint64_t)X86_CR4_VME;
5999	}
6000
6001	if (pVM->hmr0.s.fNestedPaging)
6002	{
6003	if ( !CPUMIsGuestPagingEnabledEx(pCtx)
6004	&& !pVM->hmr0.s.vmx.fUnrestrictedGuest)
6005	{
6006	/* We use 4 MB pages in our identity mapping page table when the guest doesn't have paging. */
6007	u64GuestCr4 \|= X86_CR4_PSE;
6008	/* Our identity mapping is a 32-bit page directory. */
6009	u64GuestCr4 &= ~(uint64_t)X86_CR4_PAE;
6010	}
6011	/* else use guest CR4.*/
6012	}
6013	else
6014	{
6015	Assert(!pVmxTransient->fIsNestedGuest);
6016
6017	/*
6018	* The shadow paging modes and guest paging modes are different, the shadow is in accordance with the host
6019	* paging mode and thus we need to adjust VT-x's view of CR4 depending on our shadow page tables.
6020	*/
6021	switch (pVCpu->hm.s.enmShadowMode)
6022	{
6023	case PGMMODE_REAL: /* Real-mode. */
6024	case PGMMODE_PROTECTED: /* Protected mode without paging. */
6025	case PGMMODE_32_BIT: /* 32-bit paging. */
6026	{
6027	u64GuestCr4 &= ~(uint64_t)X86_CR4_PAE;
6028	break;
6029	}
6030
6031	case PGMMODE_PAE: /* PAE paging. */
6032	case PGMMODE_PAE_NX: /* PAE paging with NX. */
6033	{
6034	u64GuestCr4 \|= X86_CR4_PAE;
6035	break;
6036	}
6037
6038	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
6039	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
6040	{
6041	#ifdef VBOX_WITH_64_BITS_GUESTS
6042	/* For our assumption in hmR0VmxShouldSwapEferMsr. */
6043	Assert(u64GuestCr4 & X86_CR4_PAE);
6044	break;
6045	#endif
6046	}
6047	default:
6048	AssertFailed();
6049	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
6050	}
6051	}
6052
6053	/* Apply the hardware specified CR4 fixed bits (mainly CR4.VMXE). */
6054	u64GuestCr4 \|= fSetCr4;
6055	u64GuestCr4 &= fZapCr4;
6056
6057	/* Commit the CR4 and CR4 read-shadow to the guest VMCS. */
6058	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_CR4, u64GuestCr4); AssertRC(rc);
6059	rc = VMXWriteVmcsNw(VMX_VMCS_CTRL_CR4_READ_SHADOW, u64ShadowCr4); AssertRC(rc);
6060
6061	/* Whether to save/load/restore XCR0 during world switch depends on CR4.OSXSAVE and host+guest XCR0. */
6062	bool const fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
6063	if (fLoadSaveGuestXcr0 != pVCpu->hmr0.s.fLoadSaveGuestXcr0)
6064	{
6065	pVCpu->hmr0.s.fLoadSaveGuestXcr0 = fLoadSaveGuestXcr0;
6066	hmR0VmxUpdateStartVmFunction(pVCpu);
6067	}
6068
6069	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_CR4);
6070
6071	Log4Func(("cr4=%#RX64 shadow=%#RX64 (set=%#RX64 zap=%#RX64)\n", u64GuestCr4, u64ShadowCr4, fSetCr4, fZapCr4));
6072	}
6073	return rc;
6074	}
6075
6076
6077	/**
6078	* Exports the guest debug registers into the guest-state area in the VMCS.
6079	* The guest debug bits are partially shared with the host (e.g. DR6, DR0-3).
6080	*
6081	* This also sets up whether \#DB and MOV DRx accesses cause VM-exits.
6082	*
6083	* @returns VBox status code.
6084	* @param pVCpu The cross context virtual CPU structure.
6085	* @param pVmxTransient The VMX-transient structure.
6086	*
6087	* @remarks No-long-jump zone!!!
6088	*/
6089	static int hmR0VmxExportSharedDebugState(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
6090	{
6091	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
6092
6093	/** @todo NSTVMX: Figure out what we want to do with nested-guest instruction
6094	* stepping. */
6095	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
6096	if (pVmxTransient->fIsNestedGuest)
6097	{
6098	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_DR7, CPUMGetGuestDR7(pVCpu));
6099	AssertRC(rc);
6100
6101	/*
6102	* We don't want to always intercept MOV DRx for nested-guests as it causes
6103	* problems when the nested hypervisor isn't intercepting them, see @bugref{10080}.
6104	* Instead, they are strictly only requested when the nested hypervisor intercepts
6105	* them -- handled while merging VMCS controls.
6106	*
6107	* If neither the outer nor the nested-hypervisor is intercepting MOV DRx,
6108	* then the nested-guest debug state should be actively loaded on the host so that
6109	* nested-guest reads its own debug registers without causing VM-exits.
6110	*/
6111	if ( !(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_MOV_DR_EXIT)
6112	&& !CPUMIsGuestDebugStateActive(pVCpu))
6113	CPUMR0LoadGuestDebugState(pVCpu, true /* include DR6 */);
6114	return VINF_SUCCESS;
6115	}
6116
6117	#ifdef VBOX_STRICT
6118	/* Validate. Intel spec. 26.3.1.1 "Checks on Guest Controls Registers, Debug Registers, MSRs" */
6119	if (pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_DEBUG)
6120	{
6121	/* Validate. Intel spec. 17.2 "Debug Registers", recompiler paranoia checks. */
6122	Assert((pVCpu->cpum.GstCtx.dr[7] & (X86_DR7_MBZ_MASK \| X86_DR7_RAZ_MASK)) == 0);
6123	Assert((pVCpu->cpum.GstCtx.dr[7] & X86_DR7_RA1_MASK) == X86_DR7_RA1_MASK);
6124	}
6125	#endif
6126
6127	bool fSteppingDB = false;
6128	bool fInterceptMovDRx = false;
6129	uint32_t uProcCtls = pVmcsInfo->u32ProcCtls;
6130	if (pVCpu->hm.s.fSingleInstruction)
6131	{
6132	/* If the CPU supports the monitor trap flag, use it for single stepping in DBGF and avoid intercepting #DB. */
6133	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_MONITOR_TRAP_FLAG)
6134	{
6135	uProcCtls \|= VMX_PROC_CTLS_MONITOR_TRAP_FLAG;
6136	Assert(fSteppingDB == false);
6137	}
6138	else
6139	{
6140	pVCpu->cpum.GstCtx.eflags.u32 \|= X86_EFL_TF;
6141	pVCpu->hm.s.fCtxChanged \|= HM_CHANGED_GUEST_RFLAGS;
6142	pVCpu->hmr0.s.fClearTrapFlag = true;
6143	fSteppingDB = true;
6144	}
6145	}
6146
6147	uint64_t u64GuestDr7;
6148	if ( fSteppingDB
6149	\|\| (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
6150	{
6151	/*
6152	* Use the combined guest and host DRx values found in the hypervisor register set
6153	* because the hypervisor debugger has breakpoints active or someone is single stepping
6154	* on the host side without a monitor trap flag.
6155	*
6156	* Note! DBGF expects a clean DR6 state before executing guest code.
6157	*/
6158	if (!CPUMIsHyperDebugStateActive(pVCpu))
6159	{
6160	CPUMR0LoadHyperDebugState(pVCpu, true /* include DR6 */);
6161	Assert(CPUMIsHyperDebugStateActive(pVCpu));
6162	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
6163	}
6164
6165	/* Update DR7 with the hypervisor value (other DRx registers are handled by CPUM one way or another). */
6166	u64GuestDr7 = CPUMGetHyperDR7(pVCpu);
6167	pVCpu->hmr0.s.fUsingHyperDR7 = true;
6168	fInterceptMovDRx = true;
6169	}
6170	else
6171	{
6172	/*
6173	* If the guest has enabled debug registers, we need to load them prior to
6174	* executing guest code so they'll trigger at the right time.
6175	*/
6176	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_DR7);
6177	if (pVCpu->cpum.GstCtx.dr[7] & (X86_DR7_ENABLED_MASK \| X86_DR7_GD))
6178	{
6179	if (!CPUMIsGuestDebugStateActive(pVCpu))
6180	{
6181	CPUMR0LoadGuestDebugState(pVCpu, true /* include DR6 */);
6182	Assert(CPUMIsGuestDebugStateActive(pVCpu));
6183	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
6184	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
6185	}
6186	Assert(!fInterceptMovDRx);
6187	}
6188	else if (!CPUMIsGuestDebugStateActive(pVCpu))
6189	{
6190	/*
6191	* If no debugging enabled, we'll lazy load DR0-3. Unlike on AMD-V, we
6192	* must intercept #DB in order to maintain a correct DR6 guest value, and
6193	* because we need to intercept it to prevent nested #DBs from hanging the
6194	* CPU, we end up always having to intercept it. See hmR0VmxSetupVmcsXcptBitmap().
6195	*/
6196	fInterceptMovDRx = true;
6197	}
6198
6199	/* Update DR7 with the actual guest value. */
6200	u64GuestDr7 = pVCpu->cpum.GstCtx.dr[7];
6201	pVCpu->hmr0.s.fUsingHyperDR7 = false;
6202	}
6203
6204	if (fInterceptMovDRx)
6205	uProcCtls \|= VMX_PROC_CTLS_MOV_DR_EXIT;
6206	else
6207	uProcCtls &= ~VMX_PROC_CTLS_MOV_DR_EXIT;
6208
6209	/*
6210	* Update the processor-based VM-execution controls with the MOV-DRx intercepts and the
6211	* monitor-trap flag and update our cache.
6212	*/
6213	if (uProcCtls != pVmcsInfo->u32ProcCtls)
6214	{
6215	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, uProcCtls);
6216	AssertRC(rc);
6217	pVmcsInfo->u32ProcCtls = uProcCtls;
6218	}
6219
6220	/*
6221	* Update guest DR7.
6222	*/
6223	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_DR7, u64GuestDr7);
6224	AssertRC(rc);
6225
6226	/*
6227	* If we have forced EFLAGS.TF to be set because we're single-stepping in the hypervisor debugger,
6228	* we need to clear interrupt inhibition if any as otherwise it causes a VM-entry failure.
6229	*
6230	* See Intel spec. 26.3.1.5 "Checks on Guest Non-Register State".
6231	*/
6232	if (fSteppingDB)
6233	{
6234	Assert(pVCpu->hm.s.fSingleInstruction);
6235	Assert(pVCpu->cpum.GstCtx.eflags.Bits.u1TF);
6236
6237	uint32_t fIntrState = 0;
6238	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_INT_STATE, &fIntrState);
6239	AssertRC(rc);
6240
6241	if (fIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_STI \| VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS))
6242	{
6243	fIntrState &= ~(VMX_VMCS_GUEST_INT_STATE_BLOCK_STI \| VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS);
6244	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_INT_STATE, fIntrState);
6245	AssertRC(rc);
6246	}
6247	}
6248
6249	return VINF_SUCCESS;
6250	}
6251
6252
6253	#ifdef VBOX_STRICT
6254	/**
6255	* Strict function to validate segment registers.
6256	*
6257	* @param pVCpu The cross context virtual CPU structure.
6258	* @param pVmcsInfo The VMCS info. object.
6259	*
6260	* @remarks Will import guest CR0 on strict builds during validation of
6261	* segments.
6262	*/
6263	static void hmR0VmxValidateSegmentRegs(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo)
6264	{
6265	/*
6266	* Validate segment registers. See Intel spec. 26.3.1.2 "Checks on Guest Segment Registers".
6267	*
6268	* The reason we check for attribute value 0 in this function and not just the unusable bit is
6269	* because hmR0VmxExportGuestSegReg() only updates the VMCS' copy of the value with the
6270	* unusable bit and doesn't change the guest-context value.
6271	*/
6272	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
6273	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6274	hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_CR0);
6275	if ( !pVM->hmr0.s.vmx.fUnrestrictedGuest
6276	&& ( !CPUMIsGuestInRealModeEx(pCtx)
6277	&& !CPUMIsGuestInV86ModeEx(pCtx)))
6278	{
6279	/* Protected mode checks */
6280	/* CS */
6281	Assert(pCtx->cs.Attr.n.u1Present);
6282	Assert(!(pCtx->cs.Attr.u & 0xf00));
6283	Assert(!(pCtx->cs.Attr.u & 0xfffe0000));
6284	Assert( (pCtx->cs.u32Limit & 0xfff) == 0xfff
6285	\|\| !(pCtx->cs.Attr.n.u1Granularity));
6286	Assert( !(pCtx->cs.u32Limit & 0xfff00000)
6287	\|\| (pCtx->cs.Attr.n.u1Granularity));
6288	/* CS cannot be loaded with NULL in protected mode. */
6289	Assert(pCtx->cs.Attr.u && !(pCtx->cs.Attr.u & X86DESCATTR_UNUSABLE)); /** @todo is this really true even for 64-bit CS? */
6290	if (pCtx->cs.Attr.n.u4Type == 9 \|\| pCtx->cs.Attr.n.u4Type == 11)
6291	Assert(pCtx->cs.Attr.n.u2Dpl == pCtx->ss.Attr.n.u2Dpl);
6292	else if (pCtx->cs.Attr.n.u4Type == 13 \|\| pCtx->cs.Attr.n.u4Type == 15)
6293	Assert(pCtx->cs.Attr.n.u2Dpl <= pCtx->ss.Attr.n.u2Dpl);
6294	else
6295	AssertMsgFailed(("Invalid CS Type %#x\n", pCtx->cs.Attr.n.u2Dpl));
6296	/* SS */
6297	Assert((pCtx->ss.Sel & X86_SEL_RPL) == (pCtx->cs.Sel & X86_SEL_RPL));
6298	Assert(pCtx->ss.Attr.n.u2Dpl == (pCtx->ss.Sel & X86_SEL_RPL));
6299	if ( !(pCtx->cr0 & X86_CR0_PE)
6300	\|\| pCtx->cs.Attr.n.u4Type == 3)
6301	{
6302	Assert(!pCtx->ss.Attr.n.u2Dpl);
6303	}
6304	if (pCtx->ss.Attr.u && !(pCtx->ss.Attr.u & X86DESCATTR_UNUSABLE))
6305	{
6306	Assert((pCtx->ss.Sel & X86_SEL_RPL) == (pCtx->cs.Sel & X86_SEL_RPL));
6307	Assert(pCtx->ss.Attr.n.u4Type == 3 \|\| pCtx->ss.Attr.n.u4Type == 7);
6308	Assert(pCtx->ss.Attr.n.u1Present);
6309	Assert(!(pCtx->ss.Attr.u & 0xf00));
6310	Assert(!(pCtx->ss.Attr.u & 0xfffe0000));
6311	Assert( (pCtx->ss.u32Limit & 0xfff) == 0xfff
6312	\|\| !(pCtx->ss.Attr.n.u1Granularity));
6313	Assert( !(pCtx->ss.u32Limit & 0xfff00000)
6314	\|\| (pCtx->ss.Attr.n.u1Granularity));
6315	}
6316	/* DS, ES, FS, GS - only check for usable selectors, see hmR0VmxExportGuestSegReg(). */
6317	if (pCtx->ds.Attr.u && !(pCtx->ds.Attr.u & X86DESCATTR_UNUSABLE))
6318	{
6319	Assert(pCtx->ds.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED);
6320	Assert(pCtx->ds.Attr.n.u1Present);
6321	Assert(pCtx->ds.Attr.n.u4Type > 11 \|\| pCtx->ds.Attr.n.u2Dpl >= (pCtx->ds.Sel & X86_SEL_RPL));
6322	Assert(!(pCtx->ds.Attr.u & 0xf00));
6323	Assert(!(pCtx->ds.Attr.u & 0xfffe0000));
6324	Assert( (pCtx->ds.u32Limit & 0xfff) == 0xfff
6325	\|\| !(pCtx->ds.Attr.n.u1Granularity));
6326	Assert( !(pCtx->ds.u32Limit & 0xfff00000)
6327	\|\| (pCtx->ds.Attr.n.u1Granularity));
6328	Assert( !(pCtx->ds.Attr.n.u4Type & X86_SEL_TYPE_CODE)
6329	\|\| (pCtx->ds.Attr.n.u4Type & X86_SEL_TYPE_READ));
6330	}
6331	if (pCtx->es.Attr.u && !(pCtx->es.Attr.u & X86DESCATTR_UNUSABLE))
6332	{
6333	Assert(pCtx->es.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED);
6334	Assert(pCtx->es.Attr.n.u1Present);
6335	Assert(pCtx->es.Attr.n.u4Type > 11 \|\| pCtx->es.Attr.n.u2Dpl >= (pCtx->es.Sel & X86_SEL_RPL));
6336	Assert(!(pCtx->es.Attr.u & 0xf00));
6337	Assert(!(pCtx->es.Attr.u & 0xfffe0000));
6338	Assert( (pCtx->es.u32Limit & 0xfff) == 0xfff
6339	\|\| !(pCtx->es.Attr.n.u1Granularity));
6340	Assert( !(pCtx->es.u32Limit & 0xfff00000)
6341	\|\| (pCtx->es.Attr.n.u1Granularity));
6342	Assert( !(pCtx->es.Attr.n.u4Type & X86_SEL_TYPE_CODE)
6343	\|\| (pCtx->es.Attr.n.u4Type & X86_SEL_TYPE_READ));
6344	}
6345	if (pCtx->fs.Attr.u && !(pCtx->fs.Attr.u & X86DESCATTR_UNUSABLE))
6346	{
6347	Assert(pCtx->fs.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED);
6348	Assert(pCtx->fs.Attr.n.u1Present);
6349	Assert(pCtx->fs.Attr.n.u4Type > 11 \|\| pCtx->fs.Attr.n.u2Dpl >= (pCtx->fs.Sel & X86_SEL_RPL));
6350	Assert(!(pCtx->fs.Attr.u & 0xf00));
6351	Assert(!(pCtx->fs.Attr.u & 0xfffe0000));
6352	Assert( (pCtx->fs.u32Limit & 0xfff) == 0xfff
6353	\|\| !(pCtx->fs.Attr.n.u1Granularity));
6354	Assert( !(pCtx->fs.u32Limit & 0xfff00000)
6355	\|\| (pCtx->fs.Attr.n.u1Granularity));
6356	Assert( !(pCtx->fs.Attr.n.u4Type & X86_SEL_TYPE_CODE)
6357	\|\| (pCtx->fs.Attr.n.u4Type & X86_SEL_TYPE_READ));
6358	}
6359	if (pCtx->gs.Attr.u && !(pCtx->gs.Attr.u & X86DESCATTR_UNUSABLE))
6360	{
6361	Assert(pCtx->gs.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED);
6362	Assert(pCtx->gs.Attr.n.u1Present);
6363	Assert(pCtx->gs.Attr.n.u4Type > 11 \|\| pCtx->gs.Attr.n.u2Dpl >= (pCtx->gs.Sel & X86_SEL_RPL));
6364	Assert(!(pCtx->gs.Attr.u & 0xf00));
6365	Assert(!(pCtx->gs.Attr.u & 0xfffe0000));
6366	Assert( (pCtx->gs.u32Limit & 0xfff) == 0xfff
6367	\|\| !(pCtx->gs.Attr.n.u1Granularity));
6368	Assert( !(pCtx->gs.u32Limit & 0xfff00000)
6369	\|\| (pCtx->gs.Attr.n.u1Granularity));
6370	Assert( !(pCtx->gs.Attr.n.u4Type & X86_SEL_TYPE_CODE)
6371	\|\| (pCtx->gs.Attr.n.u4Type & X86_SEL_TYPE_READ));
6372	}
6373	/* 64-bit capable CPUs. */
6374	Assert(!RT_HI_U32(pCtx->cs.u64Base));
6375	Assert(!pCtx->ss.Attr.u \|\| !RT_HI_U32(pCtx->ss.u64Base));
6376	Assert(!pCtx->ds.Attr.u \|\| !RT_HI_U32(pCtx->ds.u64Base));
6377	Assert(!pCtx->es.Attr.u \|\| !RT_HI_U32(pCtx->es.u64Base));
6378	}
6379	else if ( CPUMIsGuestInV86ModeEx(pCtx)
6380	\|\| ( CPUMIsGuestInRealModeEx(pCtx)
6381	&& !pVM->hmr0.s.vmx.fUnrestrictedGuest))
6382	{
6383	/* Real and v86 mode checks. */
6384	/* hmR0VmxExportGuestSegReg() writes the modified in VMCS. We want what we're feeding to VT-x. */
6385	uint32_t u32CSAttr, u32SSAttr, u32DSAttr, u32ESAttr, u32FSAttr, u32GSAttr;
6386	if (pVmcsInfo->pShared->RealMode.fRealOnV86Active)
6387	{
6388	u32CSAttr = 0xf3; u32SSAttr = 0xf3; u32DSAttr = 0xf3;
6389	u32ESAttr = 0xf3; u32FSAttr = 0xf3; u32GSAttr = 0xf3;
6390	}
6391	else
6392	{
6393	u32CSAttr = pCtx->cs.Attr.u; u32SSAttr = pCtx->ss.Attr.u; u32DSAttr = pCtx->ds.Attr.u;
6394	u32ESAttr = pCtx->es.Attr.u; u32FSAttr = pCtx->fs.Attr.u; u32GSAttr = pCtx->gs.Attr.u;
6395	}
6396
6397	/* CS */
6398	AssertMsg((pCtx->cs.u64Base == (uint64_t)pCtx->cs.Sel << 4), ("CS base %#x %#x\n", pCtx->cs.u64Base, pCtx->cs.Sel));
6399	Assert(pCtx->cs.u32Limit == 0xffff);
6400	Assert(u32CSAttr == 0xf3);
6401	/* SS */
6402	Assert(pCtx->ss.u64Base == (uint64_t)pCtx->ss.Sel << 4);
6403	Assert(pCtx->ss.u32Limit == 0xffff);
6404	Assert(u32SSAttr == 0xf3);
6405	/* DS */
6406	Assert(pCtx->ds.u64Base == (uint64_t)pCtx->ds.Sel << 4);
6407	Assert(pCtx->ds.u32Limit == 0xffff);
6408	Assert(u32DSAttr == 0xf3);
6409	/* ES */
6410	Assert(pCtx->es.u64Base == (uint64_t)pCtx->es.Sel << 4);
6411	Assert(pCtx->es.u32Limit == 0xffff);
6412	Assert(u32ESAttr == 0xf3);
6413	/* FS */
6414	Assert(pCtx->fs.u64Base == (uint64_t)pCtx->fs.Sel << 4);
6415	Assert(pCtx->fs.u32Limit == 0xffff);
6416	Assert(u32FSAttr == 0xf3);
6417	/* GS */
6418	Assert(pCtx->gs.u64Base == (uint64_t)pCtx->gs.Sel << 4);
6419	Assert(pCtx->gs.u32Limit == 0xffff);
6420	Assert(u32GSAttr == 0xf3);
6421	/* 64-bit capable CPUs. */
6422	Assert(!RT_HI_U32(pCtx->cs.u64Base));
6423	Assert(!u32SSAttr \|\| !RT_HI_U32(pCtx->ss.u64Base));
6424	Assert(!u32DSAttr \|\| !RT_HI_U32(pCtx->ds.u64Base));
6425	Assert(!u32ESAttr \|\| !RT_HI_U32(pCtx->es.u64Base));
6426	}
6427	}
6428	#endif /* VBOX_STRICT */
6429
6430
6431	/**
6432	* Exports a guest segment register into the guest-state area in the VMCS.
6433	*
6434	* @returns VBox status code.
6435	* @param pVCpu The cross context virtual CPU structure.
6436	* @param pVmcsInfo The VMCS info. object.
6437	* @param iSegReg The segment register number (X86_SREG_XXX).
6438	* @param pSelReg Pointer to the segment selector.
6439	*
6440	* @remarks No-long-jump zone!!!
6441	*/
6442	static int hmR0VmxExportGuestSegReg(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo, uint32_t iSegReg, PCCPUMSELREG pSelReg)
6443	{
6444	Assert(iSegReg < X86_SREG_COUNT);
6445
6446	uint32_t u32Access = pSelReg->Attr.u;
6447	if (!pVmcsInfo->pShared->RealMode.fRealOnV86Active)
6448	{
6449	/*
6450	* The way to differentiate between whether this is really a null selector or was just
6451	* a selector loaded with 0 in real-mode is using the segment attributes. A selector
6452	* loaded in real-mode with the value 0 is valid and usable in protected-mode and we
6453	* should -not- mark it as an unusable segment. Both the recompiler & VT-x ensures
6454	* NULL selectors loaded in protected-mode have their attribute as 0.
6455	*/
6456	if (u32Access)
6457	{ }
6458	else
6459	u32Access = X86DESCATTR_UNUSABLE;
6460	}
6461	else
6462	{
6463	/* VT-x requires our real-using-v86 mode hack to override the segment access-right bits. */
6464	u32Access = 0xf3;
6465	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.vmx.pRealModeTSS);
6466	Assert(PDMVmmDevHeapIsEnabled(pVCpu->CTX_SUFF(pVM)));
6467	RT_NOREF_PV(pVCpu);
6468	}
6469
6470	/* Validate segment access rights. Refer to Intel spec. "26.3.1.2 Checks on Guest Segment Registers". */
6471	AssertMsg((u32Access & X86DESCATTR_UNUSABLE) \|\| (u32Access & X86_SEL_TYPE_ACCESSED),
6472	("Access bit not set for usable segment. %.2s sel=%#x attr %#x\n", "ESCSSSDSFSGS" + iSegReg * 2, pSelReg, pSelReg->Attr.u));
6473
6474	/*
6475	* Commit it to the VMCS.
6476	*/
6477	Assert((uint32_t)VMX_VMCS16_GUEST_SEG_SEL(iSegReg) == g_aVmcsSegSel[iSegReg]);
6478	Assert((uint32_t)VMX_VMCS32_GUEST_SEG_LIMIT(iSegReg) == g_aVmcsSegLimit[iSegReg]);
6479	Assert((uint32_t)VMX_VMCS32_GUEST_SEG_ACCESS_RIGHTS(iSegReg) == g_aVmcsSegAttr[iSegReg]);
6480	Assert((uint32_t)VMX_VMCS_GUEST_SEG_BASE(iSegReg) == g_aVmcsSegBase[iSegReg]);
6481	int rc = VMXWriteVmcs32(VMX_VMCS16_GUEST_SEG_SEL(iSegReg), pSelReg->Sel); AssertRC(rc);
6482	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_SEG_LIMIT(iSegReg), pSelReg->u32Limit); AssertRC(rc);
6483	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_SEG_BASE(iSegReg), pSelReg->u64Base); AssertRC(rc);
6484	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_SEG_ACCESS_RIGHTS(iSegReg), u32Access); AssertRC(rc);
6485	return VINF_SUCCESS;
6486	}
6487
6488
6489	/**
6490	* Exports the guest segment registers, GDTR, IDTR, LDTR, TR into the guest-state
6491	* area in the VMCS.
6492	*
6493	* @returns VBox status code.
6494	* @param pVCpu The cross context virtual CPU structure.
6495	* @param pVmxTransient The VMX-transient structure.
6496	*
6497	* @remarks Will import guest CR0 on strict builds during validation of
6498	* segments.
6499	* @remarks No-long-jump zone!!!
6500	*/
6501	static int hmR0VmxExportGuestSegRegsXdtr(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
6502	{
6503	int rc = VERR_INTERNAL_ERROR_5;
6504	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
6505	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6506	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
6507	PVMXVMCSINFOSHARED pVmcsInfoShared = pVmcsInfo->pShared;
6508
6509	/*
6510	* Guest Segment registers: CS, SS, DS, ES, FS, GS.
6511	*/
6512	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_SREG_MASK)
6513	{
6514	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_CS)
6515	{
6516	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CS);
6517	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
6518	pVmcsInfoShared->RealMode.AttrCS.u = pCtx->cs.Attr.u;
6519	rc = hmR0VmxExportGuestSegReg(pVCpu, pVmcsInfo, X86_SREG_CS, &pCtx->cs);
6520	AssertRC(rc);
6521	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_CS);
6522	}
6523
6524	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_SS)
6525	{
6526	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_SS);
6527	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
6528	pVmcsInfoShared->RealMode.AttrSS.u = pCtx->ss.Attr.u;
6529	rc = hmR0VmxExportGuestSegReg(pVCpu, pVmcsInfo, X86_SREG_SS, &pCtx->ss);
6530	AssertRC(rc);
6531	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_SS);
6532	}
6533
6534	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_DS)
6535	{
6536	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_DS);
6537	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
6538	pVmcsInfoShared->RealMode.AttrDS.u = pCtx->ds.Attr.u;
6539	rc = hmR0VmxExportGuestSegReg(pVCpu, pVmcsInfo, X86_SREG_DS, &pCtx->ds);
6540	AssertRC(rc);
6541	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_DS);
6542	}
6543
6544	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_ES)
6545	{
6546	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_ES);
6547	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
6548	pVmcsInfoShared->RealMode.AttrES.u = pCtx->es.Attr.u;
6549	rc = hmR0VmxExportGuestSegReg(pVCpu, pVmcsInfo, X86_SREG_ES, &pCtx->es);
6550	AssertRC(rc);
6551	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_ES);
6552	}
6553
6554	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_FS)
6555	{
6556	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_FS);
6557	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
6558	pVmcsInfoShared->RealMode.AttrFS.u = pCtx->fs.Attr.u;
6559	rc = hmR0VmxExportGuestSegReg(pVCpu, pVmcsInfo, X86_SREG_FS, &pCtx->fs);
6560	AssertRC(rc);
6561	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_FS);
6562	}
6563
6564	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_GS)
6565	{
6566	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_GS);
6567	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
6568	pVmcsInfoShared->RealMode.AttrGS.u = pCtx->gs.Attr.u;
6569	rc = hmR0VmxExportGuestSegReg(pVCpu, pVmcsInfo, X86_SREG_GS, &pCtx->gs);
6570	AssertRC(rc);
6571	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_GS);
6572	}
6573
6574	#ifdef VBOX_STRICT
6575	hmR0VmxValidateSegmentRegs(pVCpu, pVmcsInfo);
6576	#endif
6577	Log4Func(("cs={%#04x base=%#RX64 limit=%#RX32 attr=%#RX32}\n", pCtx->cs.Sel, pCtx->cs.u64Base, pCtx->cs.u32Limit,
6578	pCtx->cs.Attr.u));
6579	}
6580
6581	/*
6582	* Guest TR.
6583	*/
6584	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_TR)
6585	{
6586	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_TR);
6587
6588	/*
6589	* Real-mode emulation using virtual-8086 mode with CR4.VME. Interrupt redirection is
6590	* achieved using the interrupt redirection bitmap (all bits cleared to let the guest
6591	* handle INT-n's) in the TSS. See hmR3InitFinalizeR0() to see how pRealModeTSS is setup.
6592	*/
6593	uint16_t u16Sel;
6594	uint32_t u32Limit;
6595	uint64_t u64Base;
6596	uint32_t u32AccessRights;
6597	if (!pVmcsInfoShared->RealMode.fRealOnV86Active)
6598	{
6599	u16Sel = pCtx->tr.Sel;
6600	u32Limit = pCtx->tr.u32Limit;
6601	u64Base = pCtx->tr.u64Base;
6602	u32AccessRights = pCtx->tr.Attr.u;
6603	}
6604	else
6605	{
6606	Assert(!pVmxTransient->fIsNestedGuest);
6607	Assert(pVM->hm.s.vmx.pRealModeTSS);
6608	Assert(PDMVmmDevHeapIsEnabled(pVM)); /* Guaranteed by HMCanExecuteGuest() -XXX- what about inner loop changes? */
6609
6610	/* We obtain it here every time as PCI regions could be reconfigured in the guest, changing the VMMDev base. */
6611	RTGCPHYS GCPhys;
6612	rc = PDMVmmDevHeapR3ToGCPhys(pVM, pVM->hm.s.vmx.pRealModeTSS, &GCPhys);
6613	AssertRCReturn(rc, rc);
6614
6615	X86DESCATTR DescAttr;
6616	DescAttr.u = 0;
6617	DescAttr.n.u1Present = 1;
6618	DescAttr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
6619
6620	u16Sel = 0;
6621	u32Limit = HM_VTX_TSS_SIZE;
6622	u64Base = GCPhys;
6623	u32AccessRights = DescAttr.u;
6624	}
6625
6626	/* Validate. */
6627	Assert(!(u16Sel & RT_BIT(2)));
6628	AssertMsg( (u32AccessRights & 0xf) == X86_SEL_TYPE_SYS_386_TSS_BUSY
6629	\|\| (u32AccessRights & 0xf) == X86_SEL_TYPE_SYS_286_TSS_BUSY, ("TSS is not busy!? %#x\n", u32AccessRights));
6630	AssertMsg(!(u32AccessRights & X86DESCATTR_UNUSABLE), ("TR unusable bit is not clear!? %#x\n", u32AccessRights));
6631	Assert(!(u32AccessRights & RT_BIT(4))); /* System MBZ.*/
6632	Assert(u32AccessRights & RT_BIT(7)); /* Present MB1.*/
6633	Assert(!(u32AccessRights & 0xf00)); /* 11:8 MBZ. */
6634	Assert(!(u32AccessRights & 0xfffe0000)); /* 31:17 MBZ. */
6635	Assert( (u32Limit & 0xfff) == 0xfff
6636	\|\| !(u32AccessRights & RT_BIT(15))); /* Granularity MBZ. */
6637	Assert( !(pCtx->tr.u32Limit & 0xfff00000)
6638	\|\| (u32AccessRights & RT_BIT(15))); /* Granularity MB1. */
6639
6640	rc = VMXWriteVmcs16(VMX_VMCS16_GUEST_TR_SEL, u16Sel); AssertRC(rc);
6641	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_TR_LIMIT, u32Limit); AssertRC(rc);
6642	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_TR_ACCESS_RIGHTS, u32AccessRights); AssertRC(rc);
6643	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_TR_BASE, u64Base); AssertRC(rc);
6644
6645	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_TR);
6646	Log4Func(("tr base=%#RX64 limit=%#RX32\n", pCtx->tr.u64Base, pCtx->tr.u32Limit));
6647	}
6648
6649	/*
6650	* Guest GDTR.
6651	*/
6652	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_GDTR)
6653	{
6654	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_GDTR);
6655
6656	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_GDTR_LIMIT, pCtx->gdtr.cbGdt); AssertRC(rc);
6657	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_GDTR_BASE, pCtx->gdtr.pGdt); AssertRC(rc);
6658
6659	/* Validate. */
6660	Assert(!(pCtx->gdtr.cbGdt & 0xffff0000)); /* Bits 31:16 MBZ. */
6661
6662	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_GDTR);
6663	Log4Func(("gdtr base=%#RX64 limit=%#RX32\n", pCtx->gdtr.pGdt, pCtx->gdtr.cbGdt));
6664	}
6665
6666	/*
6667	* Guest LDTR.
6668	*/
6669	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_LDTR)
6670	{
6671	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_LDTR);
6672
6673	/* The unusable bit is specific to VT-x, if it's a null selector mark it as an unusable segment. */
6674	uint32_t u32Access;
6675	if ( !pVmxTransient->fIsNestedGuest
6676	&& !pCtx->ldtr.Attr.u)
6677	u32Access = X86DESCATTR_UNUSABLE;
6678	else
6679	u32Access = pCtx->ldtr.Attr.u;
6680
6681	rc = VMXWriteVmcs16(VMX_VMCS16_GUEST_LDTR_SEL, pCtx->ldtr.Sel); AssertRC(rc);
6682	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_LDTR_LIMIT, pCtx->ldtr.u32Limit); AssertRC(rc);
6683	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_LDTR_ACCESS_RIGHTS, u32Access); AssertRC(rc);
6684	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_LDTR_BASE, pCtx->ldtr.u64Base); AssertRC(rc);
6685
6686	/* Validate. */
6687	if (!(u32Access & X86DESCATTR_UNUSABLE))
6688	{
6689	Assert(!(pCtx->ldtr.Sel & RT_BIT(2))); /* TI MBZ. */
6690	Assert(pCtx->ldtr.Attr.n.u4Type == 2); /* Type MB2 (LDT). */
6691	Assert(!pCtx->ldtr.Attr.n.u1DescType); /* System MBZ. */
6692	Assert(pCtx->ldtr.Attr.n.u1Present == 1); /* Present MB1. */
6693	Assert(!pCtx->ldtr.Attr.n.u4LimitHigh); /* 11:8 MBZ. */
6694	Assert(!(pCtx->ldtr.Attr.u & 0xfffe0000)); /* 31:17 MBZ. */
6695	Assert( (pCtx->ldtr.u32Limit & 0xfff) == 0xfff
6696	\|\| !pCtx->ldtr.Attr.n.u1Granularity); /* Granularity MBZ. */
6697	Assert( !(pCtx->ldtr.u32Limit & 0xfff00000)
6698	\|\| pCtx->ldtr.Attr.n.u1Granularity); /* Granularity MB1. */
6699	}
6700
6701	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_LDTR);
6702	Log4Func(("ldtr base=%#RX64 limit=%#RX32\n", pCtx->ldtr.u64Base, pCtx->ldtr.u32Limit));
6703	}
6704
6705	/*
6706	* Guest IDTR.
6707	*/
6708	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_IDTR)
6709	{
6710	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_IDTR);
6711
6712	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_IDTR_LIMIT, pCtx->idtr.cbIdt); AssertRC(rc);
6713	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_IDTR_BASE, pCtx->idtr.pIdt); AssertRC(rc);
6714
6715	/* Validate. */
6716	Assert(!(pCtx->idtr.cbIdt & 0xffff0000)); /* Bits 31:16 MBZ. */
6717
6718	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_IDTR);
6719	Log4Func(("idtr base=%#RX64 limit=%#RX32\n", pCtx->idtr.pIdt, pCtx->idtr.cbIdt));
6720	}
6721
6722	return VINF_SUCCESS;
6723	}
6724
6725
6726	/**
6727	* Exports certain guest MSRs into the VM-entry MSR-load and VM-exit MSR-store
6728	* areas.
6729	*
6730	* These MSRs will automatically be loaded to the host CPU on every successful
6731	* VM-entry and stored from the host CPU on every successful VM-exit.
6732	*
6733	* We creates/updates MSR slots for the host MSRs in the VM-exit MSR-load area. The
6734	* actual host MSR values are not- updated here for performance reasons. See
6735	* hmR0VmxExportHostMsrs().
6736	*
6737	* We also exports the guest sysenter MSRs into the guest-state area in the VMCS.
6738	*
6739	* @returns VBox status code.
6740	* @param pVCpu The cross context virtual CPU structure.
6741	* @param pVmxTransient The VMX-transient structure.
6742	*
6743	* @remarks No-long-jump zone!!!
6744	*/
6745	static int hmR0VmxExportGuestMsrs(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
6746	{
6747	AssertPtr(pVCpu);
6748	AssertPtr(pVmxTransient);
6749
6750	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
6751	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6752
6753	/*
6754	* MSRs that we use the auto-load/store MSR area in the VMCS.
6755	* For 64-bit hosts, we load/restore them lazily, see hmR0VmxLazyLoadGuestMsrs(),
6756	* nothing to do here. The host MSR values are updated when it's safe in
6757	* hmR0VmxLazySaveHostMsrs().
6758	*
6759	* For nested-guests, the guests MSRs from the VM-entry MSR-load area are already
6760	* loaded (into the guest-CPU context) by the VMLAUNCH/VMRESUME instruction
6761	* emulation. The merged MSR permission bitmap will ensure that we get VM-exits
6762	* for any MSR that are not part of the lazy MSRs so we do not need to place
6763	* those MSRs into the auto-load/store MSR area. Nothing to do here.
6764	*/
6765	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_VMX_GUEST_AUTO_MSRS)
6766	{
6767	/* No auto-load/store MSRs currently. */
6768	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_VMX_GUEST_AUTO_MSRS);
6769	}
6770
6771	/*
6772	* Guest Sysenter MSRs.
6773	*/
6774	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_SYSENTER_MSR_MASK)
6775	{
6776	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_SYSENTER_MSRS);
6777
6778	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_SYSENTER_CS_MSR)
6779	{
6780	int rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_SYSENTER_CS, pCtx->SysEnter.cs);
6781	AssertRC(rc);
6782	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_SYSENTER_CS_MSR);
6783	}
6784
6785	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_SYSENTER_EIP_MSR)
6786	{
6787	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_SYSENTER_EIP, pCtx->SysEnter.eip);
6788	AssertRC(rc);
6789	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_SYSENTER_EIP_MSR);
6790	}
6791
6792	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_SYSENTER_ESP_MSR)
6793	{
6794	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_SYSENTER_ESP, pCtx->SysEnter.esp);
6795	AssertRC(rc);
6796	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_SYSENTER_ESP_MSR);
6797	}
6798	}
6799
6800	/*
6801	* Guest/host EFER MSR.
6802	*/
6803	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_EFER_MSR)
6804	{
6805	/* Whether we are using the VMCS to swap the EFER MSR must have been
6806	determined earlier while exporting VM-entry/VM-exit controls. */
6807	Assert(!(ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_VMX_ENTRY_EXIT_CTLS));
6808	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_EFER);
6809
6810	if (hmR0VmxShouldSwapEferMsr(pVCpu, pVmxTransient))
6811	{
6812	/*
6813	* EFER.LME is written by software, while EFER.LMA is set by the CPU to (CR0.PG & EFER.LME).
6814	* This means a guest can set EFER.LME=1 while CR0.PG=0 and EFER.LMA can remain 0.
6815	* VT-x requires that "IA-32e mode guest" VM-entry control must be identical to EFER.LMA
6816	* and to CR0.PG. Without unrestricted execution, CR0.PG (used for VT-x, not the shadow)
6817	* must always be 1. This forces us to effectively clear both EFER.LMA and EFER.LME until
6818	* the guest has also set CR0.PG=1. Otherwise, we would run into an invalid-guest state
6819	* during VM-entry.
6820	*/
6821	uint64_t uGuestEferMsr = pCtx->msrEFER;
6822	if (!pVM->hmr0.s.vmx.fUnrestrictedGuest)
6823	{
6824	if (!(pCtx->msrEFER & MSR_K6_EFER_LMA))
6825	uGuestEferMsr &= ~MSR_K6_EFER_LME;
6826	else
6827	Assert((pCtx->msrEFER & (MSR_K6_EFER_LMA \| MSR_K6_EFER_LME)) == (MSR_K6_EFER_LMA \| MSR_K6_EFER_LME));
6828	}
6829
6830	/*
6831	* If the CPU supports VMCS controls for swapping EFER, use it. Otherwise, we have no option
6832	* but to use the auto-load store MSR area in the VMCS for swapping EFER. See @bugref{7368}.
6833	*/
6834	if (g_fHmVmxSupportsVmcsEfer)
6835	{
6836	int rc = VMXWriteVmcs64(VMX_VMCS64_GUEST_EFER_FULL, uGuestEferMsr);
6837	AssertRC(rc);
6838	}
6839	else
6840	{
6841	/*
6842	* We shall use the auto-load/store MSR area only for loading the EFER MSR but we must
6843	* continue to intercept guest read and write accesses to it, see @bugref{7386#c16}.
6844	*/
6845	int rc = hmR0VmxAddAutoLoadStoreMsr(pVCpu, pVmxTransient, MSR_K6_EFER, uGuestEferMsr,
6846	false /* fSetReadWrite /, false / fUpdateHostMsr */);
6847	AssertRCReturn(rc, rc);
6848	}
6849
6850	Log4Func(("efer=%#RX64 shadow=%#RX64\n", uGuestEferMsr, pCtx->msrEFER));
6851	}
6852	else if (!g_fHmVmxSupportsVmcsEfer)
6853	hmR0VmxRemoveAutoLoadStoreMsr(pVCpu, pVmxTransient, MSR_K6_EFER);
6854
6855	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_EFER_MSR);
6856	}
6857
6858	/*
6859	* Other MSRs.
6860	*/
6861	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_OTHER_MSRS)
6862	{
6863	/* Speculation Control (R/W). */
6864	HMVMX_CPUMCTX_ASSERT(pVCpu, HM_CHANGED_GUEST_OTHER_MSRS);
6865	if (pVM->cpum.ro.GuestFeatures.fIbrs)
6866	{
6867	int rc = hmR0VmxAddAutoLoadStoreMsr(pVCpu, pVmxTransient, MSR_IA32_SPEC_CTRL, CPUMGetGuestSpecCtrl(pVCpu),
6868	false /* fSetReadWrite /, false / fUpdateHostMsr */);
6869	AssertRCReturn(rc, rc);
6870	}
6871
6872	/* Last Branch Record. */
6873	if (pVM->hmr0.s.vmx.fLbr)
6874	{
6875	PVMXVMCSINFOSHARED const pVmcsInfoShared = pVmxTransient->pVmcsInfo->pShared;
6876	uint32_t const idFromIpMsrStart = pVM->hmr0.s.vmx.idLbrFromIpMsrFirst;
6877	uint32_t const idToIpMsrStart = pVM->hmr0.s.vmx.idLbrToIpMsrFirst;
6878	uint32_t const cLbrStack = pVM->hmr0.s.vmx.idLbrFromIpMsrLast - pVM->hmr0.s.vmx.idLbrFromIpMsrFirst + 1;
6879	Assert(cLbrStack <= 32);
6880	for (uint32_t i = 0; i < cLbrStack; i++)
6881	{
6882	int rc = hmR0VmxAddAutoLoadStoreMsr(pVCpu, pVmxTransient, idFromIpMsrStart + i,
6883	pVmcsInfoShared->au64LbrFromIpMsr[i],
6884	false /* fSetReadWrite /, false / fUpdateHostMsr */);
6885	AssertRCReturn(rc, rc);
6886
6887	/* Some CPUs don't have a Branch-To-IP MSR (P4 and related Xeons). */
6888	if (idToIpMsrStart != 0)
6889	{
6890	rc = hmR0VmxAddAutoLoadStoreMsr(pVCpu, pVmxTransient, idToIpMsrStart + i,
6891	pVmcsInfoShared->au64LbrToIpMsr[i],
6892	false /* fSetReadWrite /, false / fUpdateHostMsr */);
6893	AssertRCReturn(rc, rc);
6894	}
6895	}
6896
6897	/* Add LBR top-of-stack MSR (which contains the index to the most recent record). */
6898	int rc = hmR0VmxAddAutoLoadStoreMsr(pVCpu, pVmxTransient, pVM->hmr0.s.vmx.idLbrTosMsr,
6899	pVmcsInfoShared->u64LbrTosMsr, false /* fSetReadWrite */,
6900	false /* fUpdateHostMsr */);
6901	AssertRCReturn(rc, rc);
6902	}
6903
6904	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_OTHER_MSRS);
6905	}
6906
6907	return VINF_SUCCESS;
6908	}
6909
6910
6911	/**
6912	* Wrapper for running the guest code in VT-x.
6913	*
6914	* @returns VBox status code, no informational status codes.
6915	* @param pVCpu The cross context virtual CPU structure.
6916	* @param pVmxTransient The VMX-transient structure.
6917	*
6918	* @remarks No-long-jump zone!!!
6919	*/
6920	DECLINLINE(int) hmR0VmxRunGuest(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient)
6921	{
6922	/* Mark that HM is the keeper of all guest-CPU registers now that we're going to execute guest code. */
6923	pVCpu->cpum.GstCtx.fExtrn \|= HMVMX_CPUMCTX_EXTRN_ALL \| CPUMCTX_EXTRN_KEEPER_HM;
6924
6925	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
6926	bool const fResumeVM = RT_BOOL(pVmcsInfo->fVmcsState & VMX_V_VMCS_LAUNCH_STATE_LAUNCHED);
6927	#ifdef VBOX_WITH_STATISTICS
6928	if (fResumeVM)
6929	STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxVmResume);
6930	else
6931	STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxVmLaunch);
6932	#endif
6933	int rc = pVCpu->hmr0.s.vmx.pfnStartVm(pVmcsInfo, pVCpu, fResumeVM);
6934	AssertMsg(rc <= VINF_SUCCESS, ("%Rrc\n", rc));
6935	return rc;
6936	}
6937
6938
6939	/**
6940	* Reports world-switch error and dumps some useful debug info.
6941	*
6942	* @param pVCpu The cross context virtual CPU structure.
6943	* @param rcVMRun The return code from VMLAUNCH/VMRESUME.
6944	* @param pVmxTransient The VMX-transient structure (only
6945	* exitReason updated).
6946	*/
6947	static void hmR0VmxReportWorldSwitchError(PVMCPUCC pVCpu, int rcVMRun, PVMXTRANSIENT pVmxTransient)
6948	{
6949	Assert(pVCpu);
6950	Assert(pVmxTransient);
6951	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
6952
6953	Log4Func(("VM-entry failure: %Rrc\n", rcVMRun));
6954	switch (rcVMRun)
6955	{
6956	case VERR_VMX_INVALID_VMXON_PTR:
6957	AssertFailed();
6958	break;
6959	case VINF_SUCCESS: /* VMLAUNCH/VMRESUME succeeded but VM-entry failed... yeah, true story. */
6960	case VERR_VMX_UNABLE_TO_START_VM: /* VMLAUNCH/VMRESUME itself failed. */
6961	{
6962	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_REASON, &pVCpu->hm.s.vmx.LastError.u32ExitReason);
6963	rc \|= VMXReadVmcs32(VMX_VMCS32_RO_VM_INSTR_ERROR, &pVCpu->hm.s.vmx.LastError.u32InstrError);
6964	AssertRC(rc);
6965	hmR0VmxReadExitQualVmcs(pVmxTransient);
6966
6967	pVCpu->hm.s.vmx.LastError.idEnteredCpu = pVCpu->hmr0.s.idEnteredCpu;
6968	/* LastError.idCurrentCpu was already updated in hmR0VmxPreRunGuestCommitted().
6969	Cannot do it here as we may have been long preempted. */
6970
6971	#ifdef VBOX_STRICT
6972	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
6973	Log4(("uExitReason %#RX32 (VmxTransient %#RX16)\n", pVCpu->hm.s.vmx.LastError.u32ExitReason,
6974	pVmxTransient->uExitReason));
6975	Log4(("Exit Qualification %#RX64\n", pVmxTransient->uExitQual));
6976	Log4(("InstrError %#RX32\n", pVCpu->hm.s.vmx.LastError.u32InstrError));
6977	if (pVCpu->hm.s.vmx.LastError.u32InstrError <= HMVMX_INSTR_ERROR_MAX)
6978	Log4(("InstrError Desc. \"%s\"\n", g_apszVmxInstrErrors[pVCpu->hm.s.vmx.LastError.u32InstrError]));
6979	else
6980	Log4(("InstrError Desc. Range exceeded %u\n", HMVMX_INSTR_ERROR_MAX));
6981	Log4(("Entered host CPU %u\n", pVCpu->hm.s.vmx.LastError.idEnteredCpu));
6982	Log4(("Current host CPU %u\n", pVCpu->hm.s.vmx.LastError.idCurrentCpu));
6983
6984	static struct
6985	{
6986	/** Name of the field to log. */
6987	const char *pszName;
6988	/** The VMCS field. */
6989	uint32_t uVmcsField;
6990	/** Whether host support of this field needs to be checked. */
6991	bool fCheckSupport;
6992	} const s_aVmcsFields[] =
6993	{
6994	{ "VMX_VMCS32_CTRL_PIN_EXEC", VMX_VMCS32_CTRL_PIN_EXEC, false },
6995	{ "VMX_VMCS32_CTRL_PROC_EXEC", VMX_VMCS32_CTRL_PROC_EXEC, false },
6996	{ "VMX_VMCS32_CTRL_PROC_EXEC2", VMX_VMCS32_CTRL_PROC_EXEC2, true },
6997	{ "VMX_VMCS32_CTRL_ENTRY", VMX_VMCS32_CTRL_ENTRY, false },
6998	{ "VMX_VMCS32_CTRL_EXIT", VMX_VMCS32_CTRL_EXIT, false },
6999	{ "VMX_VMCS32_CTRL_CR3_TARGET_COUNT", VMX_VMCS32_CTRL_CR3_TARGET_COUNT, false },
7000	{ "VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO", VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, false },
7001	{ "VMX_VMCS32_CTRL_ENTRY_EXCEPTION_ERRCODE", VMX_VMCS32_CTRL_ENTRY_EXCEPTION_ERRCODE, false },
7002	{ "VMX_VMCS32_CTRL_ENTRY_INSTR_LENGTH", VMX_VMCS32_CTRL_ENTRY_INSTR_LENGTH, false },
7003	{ "VMX_VMCS32_CTRL_TPR_THRESHOLD", VMX_VMCS32_CTRL_TPR_THRESHOLD, false },
7004	{ "VMX_VMCS32_CTRL_EXIT_MSR_STORE_COUNT", VMX_VMCS32_CTRL_EXIT_MSR_STORE_COUNT, false },
7005	{ "VMX_VMCS32_CTRL_EXIT_MSR_LOAD_COUNT", VMX_VMCS32_CTRL_EXIT_MSR_LOAD_COUNT, false },
7006	{ "VMX_VMCS32_CTRL_ENTRY_MSR_LOAD_COUNT", VMX_VMCS32_CTRL_ENTRY_MSR_LOAD_COUNT, false },
7007	{ "VMX_VMCS32_CTRL_EXCEPTION_BITMAP", VMX_VMCS32_CTRL_EXCEPTION_BITMAP, false },
7008	{ "VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MASK", VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MASK, false },
7009	{ "VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MATCH", VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MATCH, false },
7010	{ "VMX_VMCS_CTRL_CR0_MASK", VMX_VMCS_CTRL_CR0_MASK, false },
7011	{ "VMX_VMCS_CTRL_CR0_READ_SHADOW", VMX_VMCS_CTRL_CR0_READ_SHADOW, false },
7012	{ "VMX_VMCS_CTRL_CR4_MASK", VMX_VMCS_CTRL_CR4_MASK, false },
7013	{ "VMX_VMCS_CTRL_CR4_READ_SHADOW", VMX_VMCS_CTRL_CR4_READ_SHADOW, false },
7014	{ "VMX_VMCS64_CTRL_EPTP_FULL", VMX_VMCS64_CTRL_EPTP_FULL, true },
7015	{ "VMX_VMCS_GUEST_RIP", VMX_VMCS_GUEST_RIP, false },
7016	{ "VMX_VMCS_GUEST_RSP", VMX_VMCS_GUEST_RSP, false },
7017	{ "VMX_VMCS_GUEST_RFLAGS", VMX_VMCS_GUEST_RFLAGS, false },
7018	{ "VMX_VMCS16_VPID", VMX_VMCS16_VPID, true, },
7019	{ "VMX_VMCS_HOST_CR0", VMX_VMCS_HOST_CR0, false },
7020	{ "VMX_VMCS_HOST_CR3", VMX_VMCS_HOST_CR3, false },
7021	{ "VMX_VMCS_HOST_CR4", VMX_VMCS_HOST_CR4, false },
7022	/* The order of selector fields below are fixed! */
7023	{ "VMX_VMCS16_HOST_ES_SEL", VMX_VMCS16_HOST_ES_SEL, false },
7024	{ "VMX_VMCS16_HOST_CS_SEL", VMX_VMCS16_HOST_CS_SEL, false },
7025	{ "VMX_VMCS16_HOST_SS_SEL", VMX_VMCS16_HOST_SS_SEL, false },
7026	{ "VMX_VMCS16_HOST_DS_SEL", VMX_VMCS16_HOST_DS_SEL, false },
7027	{ "VMX_VMCS16_HOST_FS_SEL", VMX_VMCS16_HOST_FS_SEL, false },
7028	{ "VMX_VMCS16_HOST_GS_SEL", VMX_VMCS16_HOST_GS_SEL, false },
7029	{ "VMX_VMCS16_HOST_TR_SEL", VMX_VMCS16_HOST_TR_SEL, false },
7030	/* End of ordered selector fields. */
7031	{ "VMX_VMCS_HOST_TR_BASE", VMX_VMCS_HOST_TR_BASE, false },
7032	{ "VMX_VMCS_HOST_GDTR_BASE", VMX_VMCS_HOST_GDTR_BASE, false },
7033	{ "VMX_VMCS_HOST_IDTR_BASE", VMX_VMCS_HOST_IDTR_BASE, false },
7034	{ "VMX_VMCS32_HOST_SYSENTER_CS", VMX_VMCS32_HOST_SYSENTER_CS, false },
7035	{ "VMX_VMCS_HOST_SYSENTER_EIP", VMX_VMCS_HOST_SYSENTER_EIP, false },
7036	{ "VMX_VMCS_HOST_SYSENTER_ESP", VMX_VMCS_HOST_SYSENTER_ESP, false },
7037	{ "VMX_VMCS_HOST_RSP", VMX_VMCS_HOST_RSP, false },
7038	{ "VMX_VMCS_HOST_RIP", VMX_VMCS_HOST_RIP, false }
7039	};
7040
7041	RTGDTR HostGdtr;
7042	ASMGetGDTR(&HostGdtr);
7043
7044	uint32_t const cVmcsFields = RT_ELEMENTS(s_aVmcsFields);
7045	for (uint32_t i = 0; i < cVmcsFields; i++)
7046	{
7047	uint32_t const uVmcsField = s_aVmcsFields[i].uVmcsField;
7048
7049	bool fSupported;
7050	if (!s_aVmcsFields[i].fCheckSupport)
7051	fSupported = true;
7052	else
7053	{
7054	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
7055	switch (uVmcsField)
7056	{
7057	case VMX_VMCS64_CTRL_EPTP_FULL: fSupported = pVM->hmr0.s.fNestedPaging; break;
7058	case VMX_VMCS16_VPID: fSupported = pVM->hmr0.s.vmx.fVpid; break;
7059	case VMX_VMCS32_CTRL_PROC_EXEC2:
7060	fSupported = RT_BOOL(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_SECONDARY_CTLS);
7061	break;
7062	default:
7063	AssertMsgFailedReturnVoid(("Failed to provide VMCS field support for %#RX32\n", uVmcsField));
7064	}
7065	}
7066
7067	if (fSupported)
7068	{
7069	uint8_t const uWidth = RT_BF_GET(uVmcsField, VMX_BF_VMCSFIELD_WIDTH);
7070	switch (uWidth)
7071	{
7072	case VMX_VMCSFIELD_WIDTH_16BIT:
7073	{
7074	uint16_t u16Val;
7075	rc = VMXReadVmcs16(uVmcsField, &u16Val);
7076	AssertRC(rc);
7077	Log4(("%-40s = %#RX16\n", s_aVmcsFields[i].pszName, u16Val));
7078
7079	if ( uVmcsField >= VMX_VMCS16_HOST_ES_SEL
7080	&& uVmcsField <= VMX_VMCS16_HOST_TR_SEL)
7081	{
7082	if (u16Val < HostGdtr.cbGdt)
7083	{
7084	/* Order of selectors in s_apszSel is fixed and matches the order in s_aVmcsFields. */
7085	static const char * const s_apszSel[] = { "Host ES", "Host CS", "Host SS", "Host DS",
7086	"Host FS", "Host GS", "Host TR" };
7087	uint8_t const idxSel = RT_BF_GET(uVmcsField, VMX_BF_VMCSFIELD_INDEX);
7088	Assert(idxSel < RT_ELEMENTS(s_apszSel));
7089	PCX86DESCHC pDesc = (PCX86DESCHC)(HostGdtr.pGdt + (u16Val & X86_SEL_MASK));
7090	hmR0DumpDescriptor(pDesc, u16Val, s_apszSel[idxSel]);
7091	}
7092	else
7093	Log4((" Selector value exceeds GDT limit!\n"));
7094	}
7095	break;
7096	}
7097
7098	case VMX_VMCSFIELD_WIDTH_32BIT:
7099	{
7100	uint32_t u32Val;
7101	rc = VMXReadVmcs32(uVmcsField, &u32Val);
7102	AssertRC(rc);
7103	Log4(("%-40s = %#RX32\n", s_aVmcsFields[i].pszName, u32Val));
7104	break;
7105	}
7106
7107	case VMX_VMCSFIELD_WIDTH_64BIT:
7108	case VMX_VMCSFIELD_WIDTH_NATURAL:
7109	{
7110	uint64_t u64Val;
7111	rc = VMXReadVmcs64(uVmcsField, &u64Val);
7112	AssertRC(rc);
7113	Log4(("%-40s = %#RX64\n", s_aVmcsFields[i].pszName, u64Val));
7114	break;
7115	}
7116	}
7117	}
7118	}
7119
7120	Log4(("MSR_K6_EFER = %#RX64\n", ASMRdMsr(MSR_K6_EFER)));
7121	Log4(("MSR_K8_CSTAR = %#RX64\n", ASMRdMsr(MSR_K8_CSTAR)));
7122	Log4(("MSR_K8_LSTAR = %#RX64\n", ASMRdMsr(MSR_K8_LSTAR)));
7123	Log4(("MSR_K6_STAR = %#RX64\n", ASMRdMsr(MSR_K6_STAR)));
7124	Log4(("MSR_K8_SF_MASK = %#RX64\n", ASMRdMsr(MSR_K8_SF_MASK)));
7125	Log4(("MSR_K8_KERNEL_GS_BASE = %#RX64\n", ASMRdMsr(MSR_K8_KERNEL_GS_BASE)));
7126	#endif /* VBOX_STRICT */
7127	break;
7128	}
7129
7130	default:
7131	/* Impossible */
7132	AssertMsgFailed(("hmR0VmxReportWorldSwitchError %Rrc (%#x)\n", rcVMRun, rcVMRun));
7133	break;
7134	}
7135	}
7136
7137
7138	/**
7139	* Sets up the usage of TSC-offsetting and updates the VMCS.
7140	*
7141	* If offsetting is not possible, cause VM-exits on RDTSC(P)s. Also sets up the
7142	* VMX-preemption timer.
7143	*
7144	* @returns VBox status code.
7145	* @param pVCpu The cross context virtual CPU structure.
7146	* @param pVmxTransient The VMX-transient structure.
7147	* @param idCurrentCpu The current CPU number.
7148	*
7149	* @remarks No-long-jump zone!!!
7150	*/
7151	static void hmR0VmxUpdateTscOffsettingAndPreemptTimer(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, RTCPUID idCurrentCpu)
7152	{
7153	bool fOffsettedTsc;
7154	bool fParavirtTsc;
7155	uint64_t uTscOffset;
7156	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
7157	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
7158
7159	if (pVM->hmr0.s.vmx.fUsePreemptTimer)
7160	{
7161	/* The TMCpuTickGetDeadlineAndTscOffset function is expensive (calling it on
7162	every entry slowed down the bs2-test1 CPUID testcase by ~33% (on an 10980xe). */
7163	uint64_t cTicksToDeadline;
7164	if ( idCurrentCpu == pVCpu->hmr0.s.idLastCpu
7165	&& TMVirtualSyncIsCurrentDeadlineVersion(pVM, pVCpu->hmr0.s.vmx.uTscDeadlineVersion))
7166	{
7167	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatVmxPreemptionReusingDeadline);
7168	fOffsettedTsc = TMCpuTickCanUseRealTSC(pVM, pVCpu, &uTscOffset, &fParavirtTsc);
7169	cTicksToDeadline = pVCpu->hmr0.s.vmx.uTscDeadline - SUPReadTsc();
7170	if ((int64_t)cTicksToDeadline > 0)
7171	{ /* hopefully */ }
7172	else
7173	{
7174	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatVmxPreemptionReusingDeadlineExpired);
7175	cTicksToDeadline = 0;
7176	}
7177	}
7178	else
7179	{
7180	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatVmxPreemptionRecalcingDeadline);
7181	cTicksToDeadline = TMCpuTickGetDeadlineAndTscOffset(pVM, pVCpu, &uTscOffset, &fOffsettedTsc, &fParavirtTsc,
7182	&pVCpu->hmr0.s.vmx.uTscDeadline,
7183	&pVCpu->hmr0.s.vmx.uTscDeadlineVersion);
7184	pVCpu->hmr0.s.vmx.uTscDeadline += cTicksToDeadline;
7185	if (cTicksToDeadline >= 128)
7186	{ /* hopefully */ }
7187	else
7188	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatVmxPreemptionRecalcingDeadlineExpired);
7189	}
7190
7191	/* Make sure the returned values have sane upper and lower boundaries. */
7192	uint64_t const u64CpuHz = SUPGetCpuHzFromGipBySetIndex(g_pSUPGlobalInfoPage, pVCpu->iHostCpuSet);
7193	cTicksToDeadline = RT_MIN(cTicksToDeadline, u64CpuHz / 64); /* 1/64th of a second, 15.625ms. / /* @todo r=bird: Once real+virtual timers move to separate thread, we can raise the upper limit (16ms isn't much). ASSUMES working poke cpu function. */
7194	cTicksToDeadline = RT_MAX(cTicksToDeadline, u64CpuHz / 32678); /* 1/32768th of a second, ~30us. */
7195	cTicksToDeadline >>= pVM->hm.s.vmx.cPreemptTimerShift;
7196
7197	/** @todo r=ramshankar: We need to find a way to integrate nested-guest
7198	* preemption timers here. We probably need to clamp the preemption timer,
7199	* after converting the timer value to the host. */
7200	uint32_t const cPreemptionTickCount = (uint32_t)RT_MIN(cTicksToDeadline, UINT32_MAX - 16);
7201	int rc = VMXWriteVmcs32(VMX_VMCS32_PREEMPT_TIMER_VALUE, cPreemptionTickCount);
7202	AssertRC(rc);
7203	}
7204	else
7205	fOffsettedTsc = TMCpuTickCanUseRealTSC(pVM, pVCpu, &uTscOffset, &fParavirtTsc);
7206
7207	if (fParavirtTsc)
7208	{
7209	/* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
7210	information before every VM-entry, hence disable it for performance sake. */
7211	#if 0
7212	int rc = GIMR0UpdateParavirtTsc(pVM, 0 /* u64Offset */);
7213	AssertRC(rc);
7214	#endif
7215	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
7216	}
7217
7218	if ( fOffsettedTsc
7219	&& RT_LIKELY(!pVCpu->hmr0.s.fDebugWantRdTscExit))
7220	{
7221	if (pVmxTransient->fIsNestedGuest)
7222	uTscOffset = CPUMApplyNestedGuestTscOffset(pVCpu, uTscOffset);
7223	hmR0VmxSetTscOffsetVmcs(pVmcsInfo, uTscOffset);
7224	hmR0VmxRemoveProcCtlsVmcs(pVCpu, pVmxTransient, VMX_PROC_CTLS_RDTSC_EXIT);
7225	}
7226	else
7227	{
7228	/* We can't use TSC-offsetting (non-fixed TSC, warp drive active etc.), VM-exit on RDTSC(P). */
7229	hmR0VmxSetProcCtlsVmcs(pVmxTransient, VMX_PROC_CTLS_RDTSC_EXIT);
7230	}
7231	}
7232
7233
7234	/**
7235	* Gets the IEM exception flags for the specified vector and IDT vectoring /
7236	* VM-exit interruption info type.
7237	*
7238	* @returns The IEM exception flags.
7239	* @param uVector The event vector.
7240	* @param uVmxEventType The VMX event type.
7241	*
7242	* @remarks This function currently only constructs flags required for
7243	* IEMEvaluateRecursiveXcpt and not the complete flags (e.g, error-code
7244	* and CR2 aspects of an exception are not included).
7245	*/
7246	static uint32_t hmR0VmxGetIemXcptFlags(uint8_t uVector, uint32_t uVmxEventType)
7247	{
7248	uint32_t fIemXcptFlags;
7249	switch (uVmxEventType)
7250	{
7251	case VMX_IDT_VECTORING_INFO_TYPE_HW_XCPT:
7252	case VMX_IDT_VECTORING_INFO_TYPE_NMI:
7253	fIemXcptFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
7254	break;
7255
7256	case VMX_IDT_VECTORING_INFO_TYPE_EXT_INT:
7257	fIemXcptFlags = IEM_XCPT_FLAGS_T_EXT_INT;
7258	break;
7259
7260	case VMX_IDT_VECTORING_INFO_TYPE_PRIV_SW_XCPT:
7261	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT \| IEM_XCPT_FLAGS_ICEBP_INSTR;
7262	break;
7263
7264	case VMX_IDT_VECTORING_INFO_TYPE_SW_XCPT:
7265	{
7266	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT;
7267	if (uVector == X86_XCPT_BP)
7268	fIemXcptFlags \|= IEM_XCPT_FLAGS_BP_INSTR;
7269	else if (uVector == X86_XCPT_OF)
7270	fIemXcptFlags \|= IEM_XCPT_FLAGS_OF_INSTR;
7271	else
7272	{
7273	fIemXcptFlags = 0;
7274	AssertMsgFailed(("Unexpected vector for software exception. uVector=%#x", uVector));
7275	}
7276	break;
7277	}
7278
7279	case VMX_IDT_VECTORING_INFO_TYPE_SW_INT:
7280	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT;
7281	break;
7282
7283	default:
7284	fIemXcptFlags = 0;
7285	AssertMsgFailed(("Unexpected vector type! uVmxEventType=%#x uVector=%#x", uVmxEventType, uVector));
7286	break;
7287	}
7288	return fIemXcptFlags;
7289	}
7290
7291
7292	/**
7293	* Sets an event as a pending event to be injected into the guest.
7294	*
7295	* @param pVCpu The cross context virtual CPU structure.
7296	* @param u32IntInfo The VM-entry interruption-information field.
7297	* @param cbInstr The VM-entry instruction length in bytes (for
7298	* software interrupts, exceptions and privileged
7299	* software exceptions).
7300	* @param u32ErrCode The VM-entry exception error code.
7301	* @param GCPtrFaultAddress The fault-address (CR2) in case it's a
7302	* page-fault.
7303	*/
7304	DECLINLINE(void) hmR0VmxSetPendingEvent(PVMCPUCC pVCpu, uint32_t u32IntInfo, uint32_t cbInstr, uint32_t u32ErrCode,
7305	RTGCUINTPTR GCPtrFaultAddress)
7306	{
7307	Assert(!pVCpu->hm.s.Event.fPending);
7308	pVCpu->hm.s.Event.fPending = true;
7309	pVCpu->hm.s.Event.u64IntInfo = u32IntInfo;
7310	pVCpu->hm.s.Event.u32ErrCode = u32ErrCode;
7311	pVCpu->hm.s.Event.cbInstr = cbInstr;
7312	pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
7313	}
7314
7315
7316	/**
7317	* Sets an external interrupt as pending-for-injection into the VM.
7318	*
7319	* @param pVCpu The cross context virtual CPU structure.
7320	* @param u8Interrupt The external interrupt vector.
7321	*/
7322	DECLINLINE(void) hmR0VmxSetPendingExtInt(PVMCPUCC pVCpu, uint8_t u8Interrupt)
7323	{
7324	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_EXIT_INT_INFO_VECTOR, u8Interrupt)
7325	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_ENTRY_INT_INFO_TYPE_EXT_INT)
7326	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 0)
7327	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7328	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, 0 / u32ErrCode /, 0 / GCPtrFaultAddress */);
7329	}
7330
7331
7332	/**
7333	* Sets an NMI (\#NMI) exception as pending-for-injection into the VM.
7334	*
7335	* @param pVCpu The cross context virtual CPU structure.
7336	*/
7337	DECLINLINE(void) hmR0VmxSetPendingXcptNmi(PVMCPUCC pVCpu)
7338	{
7339	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_NMI)
7340	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_ENTRY_INT_INFO_TYPE_NMI)
7341	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 0)
7342	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7343	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, 0 / u32ErrCode /, 0 / GCPtrFaultAddress */);
7344	}
7345
7346
7347	/**
7348	* Sets a double-fault (\#DF) exception as pending-for-injection into the VM.
7349	*
7350	* @param pVCpu The cross context virtual CPU structure.
7351	*/
7352	DECLINLINE(void) hmR0VmxSetPendingXcptDF(PVMCPUCC pVCpu)
7353	{
7354	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_DF)
7355	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_HW_XCPT)
7356	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 1)
7357	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7358	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, 0 / u32ErrCode /, 0 / GCPtrFaultAddress */);
7359	}
7360
7361
7362	/**
7363	* Sets an invalid-opcode (\#UD) exception as pending-for-injection into the VM.
7364	*
7365	* @param pVCpu The cross context virtual CPU structure.
7366	*/
7367	DECLINLINE(void) hmR0VmxSetPendingXcptUD(PVMCPUCC pVCpu)
7368	{
7369	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_UD)
7370	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_HW_XCPT)
7371	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 0)
7372	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7373	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, 0 / u32ErrCode /, 0 / GCPtrFaultAddress */);
7374	}
7375
7376
7377	/**
7378	* Sets a debug (\#DB) exception as pending-for-injection into the VM.
7379	*
7380	* @param pVCpu The cross context virtual CPU structure.
7381	*/
7382	DECLINLINE(void) hmR0VmxSetPendingXcptDB(PVMCPUCC pVCpu)
7383	{
7384	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_DB)
7385	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_HW_XCPT)
7386	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 0)
7387	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7388	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, 0 / u32ErrCode /, 0 / GCPtrFaultAddress */);
7389	}
7390
7391
7392	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
7393	/**
7394	* Sets a general-protection (\#GP) exception as pending-for-injection into the VM.
7395	*
7396	* @param pVCpu The cross context virtual CPU structure.
7397	* @param u32ErrCode The error code for the general-protection exception.
7398	*/
7399	DECLINLINE(void) hmR0VmxSetPendingXcptGP(PVMCPUCC pVCpu, uint32_t u32ErrCode)
7400	{
7401	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_GP)
7402	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_HW_XCPT)
7403	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 1)
7404	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7405	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, u32ErrCode, 0 / GCPtrFaultAddress */);
7406	}
7407
7408
7409	/**
7410	* Sets a stack (\#SS) exception as pending-for-injection into the VM.
7411	*
7412	* @param pVCpu The cross context virtual CPU structure.
7413	* @param u32ErrCode The error code for the stack exception.
7414	*/
7415	DECLINLINE(void) hmR0VmxSetPendingXcptSS(PVMCPUCC pVCpu, uint32_t u32ErrCode)
7416	{
7417	uint32_t const u32IntInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_SS)
7418	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_EXIT_INT_INFO_TYPE_HW_XCPT)
7419	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 1)
7420	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
7421	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, 0 /* cbInstr /, u32ErrCode, 0 / GCPtrFaultAddress */);
7422	}
7423	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
7424
7425
7426	/**
7427	* Fixes up attributes for the specified segment register.
7428	*
7429	* @param pVCpu The cross context virtual CPU structure.
7430	* @param pSelReg The segment register that needs fixing.
7431	* @param pszRegName The register name (for logging and assertions).
7432	*/
7433	static void hmR0VmxFixUnusableSegRegAttr(PVMCPUCC pVCpu, PCPUMSELREG pSelReg, const char *pszRegName)
7434	{
7435	Assert(pSelReg->Attr.u & X86DESCATTR_UNUSABLE);
7436
7437	/*
7438	* If VT-x marks the segment as unusable, most other bits remain undefined:
7439	* - For CS the L, D and G bits have meaning.
7440	* - For SS the DPL has meaning (it -is- the CPL for Intel and VBox).
7441	* - For the remaining data segments no bits are defined.
7442	*
7443	* The present bit and the unusable bit has been observed to be set at the
7444	* same time (the selector was supposed to be invalid as we started executing
7445	* a V8086 interrupt in ring-0).
7446	*
7447	* What should be important for the rest of the VBox code, is that the P bit is
7448	* cleared. Some of the other VBox code recognizes the unusable bit, but
7449	* AMD-V certainly don't, and REM doesn't really either. So, to be on the
7450	* safe side here, we'll strip off P and other bits we don't care about. If
7451	* any code breaks because Attr.u != 0 when Sel < 4, it should be fixed.
7452	*
7453	* See Intel spec. 27.3.2 "Saving Segment Registers and Descriptor-Table Registers".
7454	*/
7455	#ifdef VBOX_STRICT
7456	uint32_t const uAttr = pSelReg->Attr.u;
7457	#endif
7458
7459	/* Masking off: X86DESCATTR_P, X86DESCATTR_LIMIT_HIGH, and X86DESCATTR_AVL. The latter two are really irrelevant. */
7460	pSelReg->Attr.u &= X86DESCATTR_UNUSABLE \| X86DESCATTR_L \| X86DESCATTR_D \| X86DESCATTR_G
7461	\| X86DESCATTR_DPL \| X86DESCATTR_TYPE \| X86DESCATTR_DT;
7462
7463	#ifdef VBOX_STRICT
7464	VMMRZCallRing3Disable(pVCpu);
7465	Log4Func(("Unusable %s: sel=%#x attr=%#x -> %#x\n", pszRegName, pSelReg->Sel, uAttr, pSelReg->Attr.u));
7466	# ifdef DEBUG_bird
7467	AssertMsg((uAttr & ~X86DESCATTR_P) == pSelReg->Attr.u,
7468	("%s: %#x != %#x (sel=%#x base=%#llx limit=%#x)\n",
7469	pszRegName, uAttr, pSelReg->Attr.u, pSelReg->Sel, pSelReg->u64Base, pSelReg->u32Limit));
7470	# endif
7471	VMMRZCallRing3Enable(pVCpu);
7472	NOREF(uAttr);
7473	#endif
7474	RT_NOREF2(pVCpu, pszRegName);
7475	}
7476
7477
7478	/**
7479	* Imports a guest segment register from the current VMCS into the guest-CPU
7480	* context.
7481	*
7482	* @param pVCpu The cross context virtual CPU structure.
7483	* @param iSegReg The segment register number (X86_SREG_XXX).
7484	*
7485	* @remarks Called with interrupts and/or preemption disabled.
7486	*/
7487	static void hmR0VmxImportGuestSegReg(PVMCPUCC pVCpu, uint32_t iSegReg)
7488	{
7489	Assert(iSegReg < X86_SREG_COUNT);
7490	Assert((uint32_t)VMX_VMCS16_GUEST_SEG_SEL(iSegReg) == g_aVmcsSegSel[iSegReg]);
7491	Assert((uint32_t)VMX_VMCS32_GUEST_SEG_LIMIT(iSegReg) == g_aVmcsSegLimit[iSegReg]);
7492	Assert((uint32_t)VMX_VMCS32_GUEST_SEG_ACCESS_RIGHTS(iSegReg) == g_aVmcsSegAttr[iSegReg]);
7493	Assert((uint32_t)VMX_VMCS_GUEST_SEG_BASE(iSegReg) == g_aVmcsSegBase[iSegReg]);
7494
7495	PCPUMSELREG pSelReg = &pVCpu->cpum.GstCtx.aSRegs[iSegReg];
7496
7497	uint16_t u16Sel;
7498	int rc = VMXReadVmcs16(VMX_VMCS16_GUEST_SEG_SEL(iSegReg), &u16Sel); AssertRC(rc);
7499	pSelReg->Sel = u16Sel;
7500	pSelReg->ValidSel = u16Sel;
7501
7502	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_SEG_LIMIT(iSegReg), &pSelReg->u32Limit); AssertRC(rc);
7503	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_SEG_BASE(iSegReg), &pSelReg->u64Base); AssertRC(rc);
7504
7505	uint32_t u32Attr;
7506	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_SEG_ACCESS_RIGHTS(iSegReg), &u32Attr); AssertRC(rc);
7507	pSelReg->Attr.u = u32Attr;
7508	if (u32Attr & X86DESCATTR_UNUSABLE)
7509	hmR0VmxFixUnusableSegRegAttr(pVCpu, pSelReg, "ES\0CS\0SS\0DS\0FS\0GS" + iSegReg * 3);
7510
7511	pSelReg->fFlags = CPUMSELREG_FLAGS_VALID;
7512	}
7513
7514
7515	/**
7516	* Imports the guest LDTR from the current VMCS into the guest-CPU context.
7517	*
7518	* @param pVCpu The cross context virtual CPU structure.
7519	*
7520	* @remarks Called with interrupts and/or preemption disabled.
7521	*/
7522	static void hmR0VmxImportGuestLdtr(PVMCPUCC pVCpu)
7523	{
7524	uint16_t u16Sel;
7525	uint64_t u64Base;
7526	uint32_t u32Limit, u32Attr;
7527	int rc = VMXReadVmcs16(VMX_VMCS16_GUEST_LDTR_SEL, &u16Sel); AssertRC(rc);
7528	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_LDTR_LIMIT, &u32Limit); AssertRC(rc);
7529	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_LDTR_ACCESS_RIGHTS, &u32Attr); AssertRC(rc);
7530	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_LDTR_BASE, &u64Base); AssertRC(rc);
7531
7532	pVCpu->cpum.GstCtx.ldtr.Sel = u16Sel;
7533	pVCpu->cpum.GstCtx.ldtr.ValidSel = u16Sel;
7534	pVCpu->cpum.GstCtx.ldtr.fFlags = CPUMSELREG_FLAGS_VALID;
7535	pVCpu->cpum.GstCtx.ldtr.u32Limit = u32Limit;
7536	pVCpu->cpum.GstCtx.ldtr.u64Base = u64Base;
7537	pVCpu->cpum.GstCtx.ldtr.Attr.u = u32Attr;
7538	if (u32Attr & X86DESCATTR_UNUSABLE)
7539	hmR0VmxFixUnusableSegRegAttr(pVCpu, &pVCpu->cpum.GstCtx.ldtr, "LDTR");
7540	}
7541
7542
7543	/**
7544	* Imports the guest TR from the current VMCS into the guest-CPU context.
7545	*
7546	* @param pVCpu The cross context virtual CPU structure.
7547	*
7548	* @remarks Called with interrupts and/or preemption disabled.
7549	*/
7550	static void hmR0VmxImportGuestTr(PVMCPUCC pVCpu)
7551	{
7552	uint16_t u16Sel;
7553	uint64_t u64Base;
7554	uint32_t u32Limit, u32Attr;
7555	int rc = VMXReadVmcs16(VMX_VMCS16_GUEST_TR_SEL, &u16Sel); AssertRC(rc);
7556	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_TR_LIMIT, &u32Limit); AssertRC(rc);
7557	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_TR_ACCESS_RIGHTS, &u32Attr); AssertRC(rc);
7558	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_TR_BASE, &u64Base); AssertRC(rc);
7559
7560	pVCpu->cpum.GstCtx.tr.Sel = u16Sel;
7561	pVCpu->cpum.GstCtx.tr.ValidSel = u16Sel;
7562	pVCpu->cpum.GstCtx.tr.fFlags = CPUMSELREG_FLAGS_VALID;
7563	pVCpu->cpum.GstCtx.tr.u32Limit = u32Limit;
7564	pVCpu->cpum.GstCtx.tr.u64Base = u64Base;
7565	pVCpu->cpum.GstCtx.tr.Attr.u = u32Attr;
7566	/* TR is the only selector that can never be unusable. */
7567	Assert(!(u32Attr & X86DESCATTR_UNUSABLE));
7568	}
7569
7570
7571	/**
7572	* Imports the guest RIP from the VMCS back into the guest-CPU context.
7573	*
7574	* @param pVCpu The cross context virtual CPU structure.
7575	*
7576	* @remarks Called with interrupts and/or preemption disabled, should not assert!
7577	* @remarks Do -not- call this function directly, use hmR0VmxImportGuestState()
7578	* instead!!!
7579	*/
7580	static void hmR0VmxImportGuestRip(PVMCPUCC pVCpu)
7581	{
7582	uint64_t u64Val;
7583	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7584	if (pCtx->fExtrn & CPUMCTX_EXTRN_RIP)
7585	{
7586	int rc = VMXReadVmcsNw(VMX_VMCS_GUEST_RIP, &u64Val);
7587	AssertRC(rc);
7588
7589	pCtx->rip = u64Val;
7590	EMR0HistoryUpdatePC(pVCpu, pCtx->rip, false);
7591	pCtx->fExtrn &= ~CPUMCTX_EXTRN_RIP;
7592	}
7593	}
7594
7595
7596	/**
7597	* Imports the guest RFLAGS from the VMCS back into the guest-CPU context.
7598	*
7599	* @param pVCpu The cross context virtual CPU structure.
7600	* @param pVmcsInfo The VMCS info. object.
7601	*
7602	* @remarks Called with interrupts and/or preemption disabled, should not assert!
7603	* @remarks Do -not- call this function directly, use hmR0VmxImportGuestState()
7604	* instead!!!
7605	*/
7606	static void hmR0VmxImportGuestRFlags(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
7607	{
7608	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7609	if (pCtx->fExtrn & CPUMCTX_EXTRN_RFLAGS)
7610	{
7611	uint64_t u64Val;
7612	int rc = VMXReadVmcsNw(VMX_VMCS_GUEST_RFLAGS, &u64Val);
7613	AssertRC(rc);
7614
7615	pCtx->rflags.u64 = u64Val;
7616	PCVMXVMCSINFOSHARED pVmcsInfoShared = pVmcsInfo->pShared;
7617	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
7618	{
7619	pCtx->eflags.Bits.u1VM = 0;
7620	pCtx->eflags.Bits.u2IOPL = pVmcsInfoShared->RealMode.Eflags.Bits.u2IOPL;
7621	}
7622	pCtx->fExtrn &= ~CPUMCTX_EXTRN_RFLAGS;
7623	}
7624	}
7625
7626
7627	/**
7628	* Imports the guest interruptibility-state from the VMCS back into the guest-CPU
7629	* context.
7630	*
7631	* @param pVCpu The cross context virtual CPU structure.
7632	* @param pVmcsInfo The VMCS info. object.
7633	*
7634	* @remarks Called with interrupts and/or preemption disabled, try not to assert and
7635	* do not log!
7636	* @remarks Do -not- call this function directly, use hmR0VmxImportGuestState()
7637	* instead!!!
7638	*/
7639	static void hmR0VmxImportGuestIntrState(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
7640	{
7641	uint32_t u32Val;
7642	int rc = VMXReadVmcs32(VMX_VMCS32_GUEST_INT_STATE, &u32Val); AssertRC(rc);
7643	if (!u32Val)
7644	{
7645	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
7646	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
7647	CPUMSetGuestNmiBlocking(pVCpu, false);
7648	}
7649	else
7650	{
7651	/*
7652	* We must import RIP here to set our EM interrupt-inhibited state.
7653	* We also import RFLAGS as our code that evaluates pending interrupts
7654	* before VM-entry requires it.
7655	*/
7656	hmR0VmxImportGuestRip(pVCpu);
7657	hmR0VmxImportGuestRFlags(pVCpu, pVmcsInfo);
7658
7659	if (u32Val & (VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS \| VMX_VMCS_GUEST_INT_STATE_BLOCK_STI))
7660	EMSetInhibitInterruptsPC(pVCpu, pVCpu->cpum.GstCtx.rip);
7661	else if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
7662	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
7663
7664	bool const fNmiBlocking = RT_BOOL(u32Val & VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI);
7665	CPUMSetGuestNmiBlocking(pVCpu, fNmiBlocking);
7666	}
7667	}
7668
7669
7670	/**
7671	* Worker for VMXR0ImportStateOnDemand.
7672	*
7673	* @returns VBox status code.
7674	* @param pVCpu The cross context virtual CPU structure.
7675	* @param pVmcsInfo The VMCS info. object.
7676	* @param fWhat What to import, CPUMCTX_EXTRN_XXX.
7677	*/
7678	static int hmR0VmxImportGuestState(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint64_t fWhat)
7679	{
7680	int rc = VINF_SUCCESS;
7681	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
7682	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7683	uint32_t u32Val;
7684
7685	/*
7686	* Note! This is hack to workaround a mysterious BSOD observed with release builds
7687	* on Windows 10 64-bit hosts. Profile and debug builds are not affected and
7688	* neither are other host platforms.
7689	*
7690	* Committing this temporarily as it prevents BSOD.
7691	*
7692	* Update: This is very likely a compiler optimization bug, see @bugref{9180}.
7693	*/
7694	#ifdef RT_OS_WINDOWS
7695	if (pVM == 0 \|\| pVM == (void *)(uintptr_t)-1)
7696	return VERR_HM_IPE_1;
7697	#endif
7698
7699	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatImportGuestState, x);
7700
7701	/*
7702	* We disable interrupts to make the updating of the state and in particular
7703	* the fExtrn modification atomic wrt to preemption hooks.
7704	*/
7705	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
7706
7707	fWhat &= pCtx->fExtrn;
7708	if (fWhat)
7709	{
7710	do
7711	{
7712	if (fWhat & CPUMCTX_EXTRN_RIP)
7713	hmR0VmxImportGuestRip(pVCpu);
7714
7715	if (fWhat & CPUMCTX_EXTRN_RFLAGS)
7716	hmR0VmxImportGuestRFlags(pVCpu, pVmcsInfo);
7717
7718	if (fWhat & CPUMCTX_EXTRN_HM_VMX_INT_STATE)
7719	hmR0VmxImportGuestIntrState(pVCpu, pVmcsInfo);
7720
7721	if (fWhat & CPUMCTX_EXTRN_RSP)
7722	{
7723	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_RSP, &pCtx->rsp);
7724	AssertRC(rc);
7725	}
7726
7727	if (fWhat & CPUMCTX_EXTRN_SREG_MASK)
7728	{
7729	PVMXVMCSINFOSHARED pVmcsInfoShared = pVmcsInfo->pShared;
7730	bool const fRealOnV86Active = pVmcsInfoShared->RealMode.fRealOnV86Active;
7731	if (fWhat & CPUMCTX_EXTRN_CS)
7732	{
7733	hmR0VmxImportGuestSegReg(pVCpu, X86_SREG_CS);
7734	hmR0VmxImportGuestRip(pVCpu);
7735	if (fRealOnV86Active)
7736	pCtx->cs.Attr.u = pVmcsInfoShared->RealMode.AttrCS.u;
7737	EMR0HistoryUpdatePC(pVCpu, pCtx->cs.u64Base + pCtx->rip, true /* fFlattened */);
7738	}
7739	if (fWhat & CPUMCTX_EXTRN_SS)
7740	{
7741	hmR0VmxImportGuestSegReg(pVCpu, X86_SREG_SS);
7742	if (fRealOnV86Active)
7743	pCtx->ss.Attr.u = pVmcsInfoShared->RealMode.AttrSS.u;
7744	}
7745	if (fWhat & CPUMCTX_EXTRN_DS)
7746	{
7747	hmR0VmxImportGuestSegReg(pVCpu, X86_SREG_DS);
7748	if (fRealOnV86Active)
7749	pCtx->ds.Attr.u = pVmcsInfoShared->RealMode.AttrDS.u;
7750	}
7751	if (fWhat & CPUMCTX_EXTRN_ES)
7752	{
7753	hmR0VmxImportGuestSegReg(pVCpu, X86_SREG_ES);
7754	if (fRealOnV86Active)
7755	pCtx->es.Attr.u = pVmcsInfoShared->RealMode.AttrES.u;
7756	}
7757	if (fWhat & CPUMCTX_EXTRN_FS)
7758	{
7759	hmR0VmxImportGuestSegReg(pVCpu, X86_SREG_FS);
7760	if (fRealOnV86Active)
7761	pCtx->fs.Attr.u = pVmcsInfoShared->RealMode.AttrFS.u;
7762	}
7763	if (fWhat & CPUMCTX_EXTRN_GS)
7764	{
7765	hmR0VmxImportGuestSegReg(pVCpu, X86_SREG_GS);
7766	if (fRealOnV86Active)
7767	pCtx->gs.Attr.u = pVmcsInfoShared->RealMode.AttrGS.u;
7768	}
7769	}
7770
7771	if (fWhat & CPUMCTX_EXTRN_TABLE_MASK)
7772	{
7773	if (fWhat & CPUMCTX_EXTRN_LDTR)
7774	hmR0VmxImportGuestLdtr(pVCpu);
7775
7776	if (fWhat & CPUMCTX_EXTRN_GDTR)
7777	{
7778	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_GDTR_BASE, &pCtx->gdtr.pGdt); AssertRC(rc);
7779	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_GDTR_LIMIT, &u32Val); AssertRC(rc);
7780	pCtx->gdtr.cbGdt = u32Val;
7781	}
7782
7783	/* Guest IDTR. */
7784	if (fWhat & CPUMCTX_EXTRN_IDTR)
7785	{
7786	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_IDTR_BASE, &pCtx->idtr.pIdt); AssertRC(rc);
7787	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_IDTR_LIMIT, &u32Val); AssertRC(rc);
7788	pCtx->idtr.cbIdt = u32Val;
7789	}
7790
7791	/* Guest TR. */
7792	if (fWhat & CPUMCTX_EXTRN_TR)
7793	{
7794	/* Real-mode emulation using virtual-8086 mode has the fake TSS (pRealModeTSS) in TR,
7795	don't need to import that one. */
7796	if (!pVmcsInfo->pShared->RealMode.fRealOnV86Active)
7797	hmR0VmxImportGuestTr(pVCpu);
7798	}
7799	}
7800
7801	if (fWhat & CPUMCTX_EXTRN_DR7)
7802	{
7803	if (!pVCpu->hmr0.s.fUsingHyperDR7)
7804	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_DR7, &pCtx->dr[7]); AssertRC(rc);
7805	}
7806
7807	if (fWhat & CPUMCTX_EXTRN_SYSENTER_MSRS)
7808	{
7809	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_SYSENTER_EIP, &pCtx->SysEnter.eip); AssertRC(rc);
7810	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_SYSENTER_ESP, &pCtx->SysEnter.esp); AssertRC(rc);
7811	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_SYSENTER_CS, &u32Val); AssertRC(rc);
7812	pCtx->SysEnter.cs = u32Val;
7813	}
7814
7815	if (fWhat & CPUMCTX_EXTRN_KERNEL_GS_BASE)
7816	{
7817	if ( pVM->hmr0.s.fAllow64BitGuests
7818	&& (pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST))
7819	pCtx->msrKERNELGSBASE = ASMRdMsr(MSR_K8_KERNEL_GS_BASE);
7820	}
7821
7822	if (fWhat & CPUMCTX_EXTRN_SYSCALL_MSRS)
7823	{
7824	if ( pVM->hmr0.s.fAllow64BitGuests
7825	&& (pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST))
7826	{
7827	pCtx->msrLSTAR = ASMRdMsr(MSR_K8_LSTAR);
7828	pCtx->msrSTAR = ASMRdMsr(MSR_K6_STAR);
7829	pCtx->msrSFMASK = ASMRdMsr(MSR_K8_SF_MASK);
7830	}
7831	}
7832
7833	if (fWhat & (CPUMCTX_EXTRN_TSC_AUX \| CPUMCTX_EXTRN_OTHER_MSRS))
7834	{
7835	PVMXVMCSINFOSHARED pVmcsInfoShared = pVmcsInfo->pShared;
7836	PCVMXAUTOMSR pMsrs = (PCVMXAUTOMSR)pVmcsInfo->pvGuestMsrStore;
7837	uint32_t const cMsrs = pVmcsInfo->cExitMsrStore;
7838	Assert(pMsrs);
7839	Assert(cMsrs <= VMX_MISC_MAX_MSRS(g_HmMsrs.u.vmx.u64Misc));
7840	Assert(sizeof(pMsrs) cMsrs <= X86_PAGE_4K_SIZE);
7841	for (uint32_t i = 0; i < cMsrs; i++)
7842	{
7843	uint32_t const idMsr = pMsrs[i].u32Msr;
7844	switch (idMsr)
7845	{
7846	case MSR_K8_TSC_AUX: CPUMSetGuestTscAux(pVCpu, pMsrs[i].u64Value); break;
7847	case MSR_IA32_SPEC_CTRL: CPUMSetGuestSpecCtrl(pVCpu, pMsrs[i].u64Value); break;
7848	case MSR_K6_EFER: /* Can't be changed without causing a VM-exit */ break;
7849	default:
7850	{
7851	uint32_t idxLbrMsr;
7852	if (pVM->hmr0.s.vmx.fLbr)
7853	{
7854	if (hmR0VmxIsLbrBranchFromMsr(pVM, idMsr, &idxLbrMsr))
7855	{
7856	Assert(idxLbrMsr < RT_ELEMENTS(pVmcsInfoShared->au64LbrFromIpMsr));
7857	pVmcsInfoShared->au64LbrFromIpMsr[idxLbrMsr] = pMsrs[i].u64Value;
7858	break;
7859	}
7860	if (hmR0VmxIsLbrBranchToMsr(pVM, idMsr, &idxLbrMsr))
7861	{
7862	Assert(idxLbrMsr < RT_ELEMENTS(pVmcsInfoShared->au64LbrFromIpMsr));
7863	pVmcsInfoShared->au64LbrToIpMsr[idxLbrMsr] = pMsrs[i].u64Value;
7864	break;
7865	}
7866	if (idMsr == pVM->hmr0.s.vmx.idLbrTosMsr)
7867	{
7868	pVmcsInfoShared->u64LbrTosMsr = pMsrs[i].u64Value;
7869	break;
7870	}
7871	/* Fallthru (no break) */
7872	}
7873	pCtx->fExtrn = 0;
7874	pVCpu->hm.s.u32HMError = pMsrs->u32Msr;
7875	ASMSetFlags(fEFlags);
7876	AssertMsgFailed(("Unexpected MSR in auto-load/store area. idMsr=%#RX32 cMsrs=%u\n", idMsr, cMsrs));
7877	return VERR_HM_UNEXPECTED_LD_ST_MSR;
7878	}
7879	}
7880	}
7881	}
7882
7883	if (fWhat & CPUMCTX_EXTRN_CR_MASK)
7884	{
7885	if (fWhat & CPUMCTX_EXTRN_CR0)
7886	{
7887	uint64_t u64Cr0;
7888	uint64_t u64Shadow;
7889	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_CR0, &u64Cr0); AssertRC(rc);
7890	rc = VMXReadVmcsNw(VMX_VMCS_CTRL_CR0_READ_SHADOW, &u64Shadow); AssertRC(rc);
7891	#ifndef VBOX_WITH_NESTED_HWVIRT_VMX
7892	u64Cr0 = (u64Cr0 & ~pVmcsInfo->u64Cr0Mask)
7893	\| (u64Shadow & pVmcsInfo->u64Cr0Mask);
7894	#else
7895	if (!CPUMIsGuestInVmxNonRootMode(pCtx))
7896	{
7897	u64Cr0 = (u64Cr0 & ~pVmcsInfo->u64Cr0Mask)
7898	\| (u64Shadow & pVmcsInfo->u64Cr0Mask);
7899	}
7900	else
7901	{
7902	/*
7903	* We've merged the guest and nested-guest's CR0 guest/host mask while executing
7904	* the nested-guest using hardware-assisted VMX. Accordingly we need to
7905	* re-construct CR0. See @bugref{9180#c95} for details.
7906	*/
7907	PCVMXVMCSINFO pVmcsInfoGst = &pVCpu->hmr0.s.vmx.VmcsInfo;
7908	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
7909	u64Cr0 = (u64Cr0 & ~pVmcsInfo->u64Cr0Mask)
7910	\| (pVmcsNstGst->u64GuestCr0.u & pVmcsNstGst->u64Cr0Mask.u)
7911	\| (u64Shadow & (pVmcsInfoGst->u64Cr0Mask & ~pVmcsNstGst->u64Cr0Mask.u));
7912	}
7913	#endif
7914	VMMRZCallRing3Disable(pVCpu); /* May call into PGM which has Log statements. */
7915	CPUMSetGuestCR0(pVCpu, u64Cr0);
7916	VMMRZCallRing3Enable(pVCpu);
7917	}
7918
7919	if (fWhat & CPUMCTX_EXTRN_CR4)
7920	{
7921	uint64_t u64Cr4;
7922	uint64_t u64Shadow;
7923	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_CR4, &u64Cr4); AssertRC(rc);
7924	rc \|= VMXReadVmcsNw(VMX_VMCS_CTRL_CR4_READ_SHADOW, &u64Shadow); AssertRC(rc);
7925	#ifndef VBOX_WITH_NESTED_HWVIRT_VMX
7926	u64Cr4 = (u64Cr4 & ~pVmcsInfo->u64Cr4Mask)
7927	\| (u64Shadow & pVmcsInfo->u64Cr4Mask);
7928	#else
7929	if (!CPUMIsGuestInVmxNonRootMode(pCtx))
7930	{
7931	u64Cr4 = (u64Cr4 & ~pVmcsInfo->u64Cr4Mask)
7932	\| (u64Shadow & pVmcsInfo->u64Cr4Mask);
7933	}
7934	else
7935	{
7936	/*
7937	* We've merged the guest and nested-guest's CR4 guest/host mask while executing
7938	* the nested-guest using hardware-assisted VMX. Accordingly we need to
7939	* re-construct CR4. See @bugref{9180#c95} for details.
7940	*/
7941	PCVMXVMCSINFO pVmcsInfoGst = &pVCpu->hmr0.s.vmx.VmcsInfo;
7942	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
7943	u64Cr4 = (u64Cr4 & ~pVmcsInfo->u64Cr4Mask)
7944	\| (pVmcsNstGst->u64GuestCr4.u & pVmcsNstGst->u64Cr4Mask.u)
7945	\| (u64Shadow & (pVmcsInfoGst->u64Cr4Mask & ~pVmcsNstGst->u64Cr4Mask.u));
7946	}
7947	#endif
7948	pCtx->cr4 = u64Cr4;
7949	}
7950
7951	if (fWhat & CPUMCTX_EXTRN_CR3)
7952	{
7953	/* CR0.PG bit changes are always intercepted, so it's up to date. */
7954	if ( pVM->hmr0.s.vmx.fUnrestrictedGuest
7955	\|\| ( pVM->hmr0.s.fNestedPaging
7956	&& CPUMIsGuestPagingEnabledEx(pCtx)))
7957	{
7958	uint64_t u64Cr3;
7959	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_CR3, &u64Cr3); AssertRC(rc);
7960	if (pCtx->cr3 != u64Cr3)
7961	{
7962	pCtx->cr3 = u64Cr3;
7963	VMCPU_FF_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3);
7964	}
7965
7966	/* If the guest is in PAE mode, sync back the PDPE's into the guest state.
7967	Note: CR4.PAE, CR0.PG, EFER MSR changes are always intercepted, so they're up to date. */
7968	if (CPUMIsGuestInPAEModeEx(pCtx))
7969	{
7970	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE0_FULL, &pVCpu->hm.s.aPdpes[0].u); AssertRC(rc);
7971	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE1_FULL, &pVCpu->hm.s.aPdpes[1].u); AssertRC(rc);
7972	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE2_FULL, &pVCpu->hm.s.aPdpes[2].u); AssertRC(rc);
7973	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE3_FULL, &pVCpu->hm.s.aPdpes[3].u); AssertRC(rc);
7974	VMCPU_FF_SET(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES);
7975	}
7976	}
7977	}
7978	}
7979
7980	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
7981	if (fWhat & CPUMCTX_EXTRN_HWVIRT)
7982	{
7983	if ( (pVmcsInfo->u32ProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING)
7984	&& !CPUMIsGuestInVmxNonRootMode(pCtx))
7985	{
7986	Assert(CPUMIsGuestInVmxRootMode(pCtx));
7987	rc = hmR0VmxCopyShadowToNstGstVmcs(pVCpu, pVmcsInfo);
7988	if (RT_SUCCESS(rc))
7989	{ /* likely */ }
7990	else
7991	break;
7992	}
7993	}
7994	#endif
7995	} while (0);
7996
7997	if (RT_SUCCESS(rc))
7998	{
7999	/* Update fExtrn. */
8000	pCtx->fExtrn &= ~fWhat;
8001
8002	/* If everything has been imported, clear the HM keeper bit. */
8003	if (!(pCtx->fExtrn & HMVMX_CPUMCTX_EXTRN_ALL))
8004	{
8005	pCtx->fExtrn &= ~CPUMCTX_EXTRN_KEEPER_HM;
8006	Assert(!pCtx->fExtrn);
8007	}
8008	}
8009	}
8010	else
8011	AssertMsg(!pCtx->fExtrn \|\| (pCtx->fExtrn & HMVMX_CPUMCTX_EXTRN_ALL), ("%#RX64\n", pCtx->fExtrn));
8012
8013	/*
8014	* Restore interrupts.
8015	*/
8016	ASMSetFlags(fEFlags);
8017
8018	STAM_PROFILE_ADV_STOP(& pVCpu->hm.s.StatImportGuestState, x);
8019
8020	if (RT_SUCCESS(rc))
8021	{ /* likely */ }
8022	else
8023	return rc;
8024
8025	/*
8026	* Honor any pending CR3 updates.
8027	*
8028	* Consider this scenario: VM-exit -> VMMRZCallRing3Enable() -> do stuff that causes a longjmp -> VMXR0CallRing3Callback()
8029	* -> VMMRZCallRing3Disable() -> hmR0VmxImportGuestState() -> Sets VMCPU_FF_HM_UPDATE_CR3 pending -> return from the longjmp
8030	* -> continue with VM-exit handling -> hmR0VmxImportGuestState() and here we are.
8031	*
8032	* The reason for such complicated handling is because VM-exits that call into PGM expect CR3 to be up-to-date and thus
8033	* if any CR3-saves -before- the VM-exit (longjmp) postponed the CR3 update via the force-flag, any VM-exit handler that
8034	* calls into PGM when it re-saves CR3 will end up here and we call PGMUpdateCR3(). This is why the code below should
8035	* -NOT- check if CPUMCTX_EXTRN_CR3 is set!
8036	*
8037	* The longjmp exit path can't check these CR3 force-flags and call code that takes a lock again. We cover for it here.
8038	*/
8039	if (VMMRZCallRing3IsEnabled(pVCpu))
8040	{
8041	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3))
8042	{
8043	Assert(!(ASMAtomicUoReadU64(&pCtx->fExtrn) & CPUMCTX_EXTRN_CR3));
8044	PGMUpdateCR3(pVCpu, CPUMGetGuestCR3(pVCpu));
8045	}
8046
8047	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES))
8048	PGMGstUpdatePaePdpes(pVCpu, &pVCpu->hm.s.aPdpes[0]);
8049
8050	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
8051	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
8052	}
8053
8054	return VINF_SUCCESS;
8055	}
8056
8057
8058	/**
8059	* Saves the guest state from the VMCS into the guest-CPU context.
8060	*
8061	* @returns VBox status code.
8062	* @param pVCpu The cross context virtual CPU structure.
8063	* @param fWhat What to import, CPUMCTX_EXTRN_XXX.
8064	*/
8065	VMMR0DECL(int) VMXR0ImportStateOnDemand(PVMCPUCC pVCpu, uint64_t fWhat)
8066	{
8067	AssertPtr(pVCpu);
8068	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
8069	return hmR0VmxImportGuestState(pVCpu, pVmcsInfo, fWhat);
8070	}
8071
8072
8073	/**
8074	* Check per-VM and per-VCPU force flag actions that require us to go back to
8075	* ring-3 for one reason or another.
8076	*
8077	* @returns Strict VBox status code (i.e. informational status codes too)
8078	* @retval VINF_SUCCESS if we don't have any actions that require going back to
8079	* ring-3.
8080	* @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
8081	* @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
8082	* interrupts)
8083	* @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
8084	* all EMTs to be in ring-3.
8085	* @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
8086	* @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
8087	* to the EM loop.
8088	*
8089	* @param pVCpu The cross context virtual CPU structure.
8090	* @param pVmxTransient The VMX-transient structure.
8091	* @param fStepping Whether we are single-stepping the guest using the
8092	* hypervisor debugger.
8093	*
8094	* @remarks This might cause nested-guest VM-exits, caller must check if the guest
8095	* is no longer in VMX non-root mode.
8096	*/
8097	static VBOXSTRICTRC hmR0VmxCheckForceFlags(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, bool fStepping)
8098	{
8099	Assert(VMMRZCallRing3IsEnabled(pVCpu));
8100
8101	/*
8102	* Update pending interrupts into the APIC's IRR.
8103	*/
8104	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC))
8105	APICUpdatePendingInterrupts(pVCpu);
8106
8107	/*
8108	* Anything pending? Should be more likely than not if we're doing a good job.
8109	*/
8110	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
8111	if ( !fStepping
8112	? !VM_FF_IS_ANY_SET(pVM, VM_FF_HP_R0_PRE_HM_MASK)
8113	&& !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HP_R0_PRE_HM_MASK)
8114	: !VM_FF_IS_ANY_SET(pVM, VM_FF_HP_R0_PRE_HM_STEP_MASK)
8115	&& !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
8116	return VINF_SUCCESS;
8117
8118	/* Pending PGM C3 sync. */
8119	if (VMCPU_FF_IS_ANY_SET(pVCpu,VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
8120	{
8121	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
8122	Assert(!(ASMAtomicUoReadU64(&pCtx->fExtrn) & (CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR3 \| CPUMCTX_EXTRN_CR4)));
8123	VBOXSTRICTRC rcStrict = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4,
8124	VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
8125	if (rcStrict != VINF_SUCCESS)
8126	{
8127	AssertRC(VBOXSTRICTRC_VAL(rcStrict));
8128	Log4Func(("PGMSyncCR3 forcing us back to ring-3. rc2=%d\n", VBOXSTRICTRC_VAL(rcStrict)));
8129	return rcStrict;
8130	}
8131	}
8132
8133	/* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
8134	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HM_TO_R3_MASK)
8135	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
8136	{
8137	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
8138	int rc = RT_LIKELY(!VM_FF_IS_SET(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_RAW_TO_R3 : VINF_EM_NO_MEMORY;
8139	Log4Func(("HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
8140	return rc;
8141	}
8142
8143	/* Pending VM request packets, such as hardware interrupts. */
8144	if ( VM_FF_IS_SET(pVM, VM_FF_REQUEST)
8145	\|\| VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_REQUEST))
8146	{
8147	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchVmReq);
8148	Log4Func(("Pending VM request forcing us back to ring-3\n"));
8149	return VINF_EM_PENDING_REQUEST;
8150	}
8151
8152	/* Pending PGM pool flushes. */
8153	if (VM_FF_IS_SET(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
8154	{
8155	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchPgmPoolFlush);
8156	Log4Func(("PGM pool flush pending forcing us back to ring-3\n"));
8157	return VINF_PGM_POOL_FLUSH_PENDING;
8158	}
8159
8160	/* Pending DMA requests. */
8161	if (VM_FF_IS_SET(pVM, VM_FF_PDM_DMA))
8162	{
8163	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchDma);
8164	Log4Func(("Pending DMA request forcing us back to ring-3\n"));
8165	return VINF_EM_RAW_TO_R3;
8166	}
8167
8168	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
8169	/*
8170	* Pending nested-guest events.
8171	*
8172	* Please note the priority of these events are specified and important.
8173	* See Intel spec. 29.4.3.2 "APIC-Write Emulation".
8174	* See Intel spec. 6.9 "Priority Among Simultaneous Exceptions And Interrupts".
8175	*/
8176	if (pVmxTransient->fIsNestedGuest)
8177	{
8178	/* Pending nested-guest APIC-write. */
8179	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_APIC_WRITE))
8180	{
8181	Log4Func(("Pending nested-guest APIC-write\n"));
8182	VBOXSTRICTRC rcStrict = IEMExecVmxVmexitApicWrite(pVCpu);
8183	Assert(rcStrict != VINF_VMX_INTERCEPT_NOT_ACTIVE);
8184	return rcStrict;
8185	}
8186
8187	/* Pending nested-guest monitor-trap flag (MTF). */
8188	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_MTF))
8189	{
8190	Log4Func(("Pending nested-guest MTF\n"));
8191	VBOXSTRICTRC rcStrict = IEMExecVmxVmexit(pVCpu, VMX_EXIT_MTF, 0 /* uExitQual */);
8192	Assert(rcStrict != VINF_VMX_INTERCEPT_NOT_ACTIVE);
8193	return rcStrict;
8194	}
8195
8196	/* Pending nested-guest VMX-preemption timer expired. */
8197	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_VMX_PREEMPT_TIMER))
8198	{
8199	Log4Func(("Pending nested-guest preempt timer\n"));
8200	VBOXSTRICTRC rcStrict = IEMExecVmxVmexitPreemptTimer(pVCpu);
8201	Assert(rcStrict != VINF_VMX_INTERCEPT_NOT_ACTIVE);
8202	return rcStrict;
8203	}
8204	}
8205	#else
8206	NOREF(pVmxTransient);
8207	#endif
8208
8209	return VINF_SUCCESS;
8210	}
8211
8212
8213	/**
8214	* Converts any TRPM trap into a pending HM event. This is typically used when
8215	* entering from ring-3 (not longjmp returns).
8216	*
8217	* @param pVCpu The cross context virtual CPU structure.
8218	*/
8219	static void hmR0VmxTrpmTrapToPendingEvent(PVMCPUCC pVCpu)
8220	{
8221	Assert(TRPMHasTrap(pVCpu));
8222	Assert(!pVCpu->hm.s.Event.fPending);
8223
8224	uint8_t uVector;
8225	TRPMEVENT enmTrpmEvent;
8226	uint32_t uErrCode;
8227	RTGCUINTPTR GCPtrFaultAddress;
8228	uint8_t cbInstr;
8229	bool fIcebp;
8230
8231	int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr, &fIcebp);
8232	AssertRC(rc);
8233
8234	uint32_t u32IntInfo;
8235	u32IntInfo = uVector \| VMX_IDT_VECTORING_INFO_VALID;
8236	u32IntInfo \|= HMTrpmEventTypeToVmxEventType(uVector, enmTrpmEvent, fIcebp);
8237
8238	rc = TRPMResetTrap(pVCpu);
8239	AssertRC(rc);
8240	Log4(("TRPM->HM event: u32IntInfo=%#RX32 enmTrpmEvent=%d cbInstr=%u uErrCode=%#RX32 GCPtrFaultAddress=%#RGv\n",
8241	u32IntInfo, enmTrpmEvent, cbInstr, uErrCode, GCPtrFaultAddress));
8242
8243	hmR0VmxSetPendingEvent(pVCpu, u32IntInfo, cbInstr, uErrCode, GCPtrFaultAddress);
8244	}
8245
8246
8247	/**
8248	* Converts the pending HM event into a TRPM trap.
8249	*
8250	* @param pVCpu The cross context virtual CPU structure.
8251	*/
8252	static void hmR0VmxPendingEventToTrpmTrap(PVMCPUCC pVCpu)
8253	{
8254	Assert(pVCpu->hm.s.Event.fPending);
8255
8256	/* If a trap was already pending, we did something wrong! */
8257	Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo /, NULL / pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
8258
8259	uint32_t const u32IntInfo = pVCpu->hm.s.Event.u64IntInfo;
8260	uint32_t const uVector = VMX_IDT_VECTORING_INFO_VECTOR(u32IntInfo);
8261	TRPMEVENT const enmTrapType = HMVmxEventTypeToTrpmEventType(u32IntInfo);
8262
8263	Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, enmTrapType));
8264
8265	int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
8266	AssertRC(rc);
8267
8268	if (VMX_IDT_VECTORING_INFO_IS_ERROR_CODE_VALID(u32IntInfo))
8269	TRPMSetErrorCode(pVCpu, pVCpu->hm.s.Event.u32ErrCode);
8270
8271	if (VMX_IDT_VECTORING_INFO_IS_XCPT_PF(u32IntInfo))
8272	TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
8273	else
8274	{
8275	uint8_t const uVectorType = VMX_IDT_VECTORING_INFO_TYPE(u32IntInfo);
8276	switch (uVectorType)
8277	{
8278	case VMX_IDT_VECTORING_INFO_TYPE_PRIV_SW_XCPT:
8279	TRPMSetTrapDueToIcebp(pVCpu);
8280	RT_FALL_THRU();
8281	case VMX_IDT_VECTORING_INFO_TYPE_SW_INT:
8282	case VMX_IDT_VECTORING_INFO_TYPE_SW_XCPT:
8283	{
8284	AssertMsg( uVectorType == VMX_IDT_VECTORING_INFO_TYPE_SW_INT
8285	\|\| ( uVector == X86_XCPT_BP /* INT3 */
8286	\|\| uVector == X86_XCPT_OF /* INTO */
8287	\|\| uVector == X86_XCPT_DB /* INT1 (ICEBP) */),
8288	("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
8289	TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
8290	break;
8291	}
8292	}
8293	}
8294
8295	/* We're now done converting the pending event. */
8296	pVCpu->hm.s.Event.fPending = false;
8297	}
8298
8299
8300	/**
8301	* Sets the interrupt-window exiting control in the VMCS which instructs VT-x to
8302	* cause a VM-exit as soon as the guest is in a state to receive interrupts.
8303	*
8304	* @param pVmcsInfo The VMCS info. object.
8305	*/
8306	static void hmR0VmxSetIntWindowExitVmcs(PVMXVMCSINFO pVmcsInfo)
8307	{
8308	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_INT_WINDOW_EXIT)
8309	{
8310	if (!(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_INT_WINDOW_EXIT))
8311	{
8312	pVmcsInfo->u32ProcCtls \|= VMX_PROC_CTLS_INT_WINDOW_EXIT;
8313	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
8314	AssertRC(rc);
8315	}
8316	} /* else we will deliver interrupts whenever the guest Vm-exits next and is in a state to receive the interrupt. */
8317	}
8318
8319
8320	/**
8321	* Clears the interrupt-window exiting control in the VMCS.
8322	*
8323	* @param pVmcsInfo The VMCS info. object.
8324	*/
8325	DECLINLINE(void) hmR0VmxClearIntWindowExitVmcs(PVMXVMCSINFO pVmcsInfo)
8326	{
8327	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_INT_WINDOW_EXIT)
8328	{
8329	pVmcsInfo->u32ProcCtls &= ~VMX_PROC_CTLS_INT_WINDOW_EXIT;
8330	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
8331	AssertRC(rc);
8332	}
8333	}
8334
8335
8336	/**
8337	* Sets the NMI-window exiting control in the VMCS which instructs VT-x to
8338	* cause a VM-exit as soon as the guest is in a state to receive NMIs.
8339	*
8340	* @param pVmcsInfo The VMCS info. object.
8341	*/
8342	static void hmR0VmxSetNmiWindowExitVmcs(PVMXVMCSINFO pVmcsInfo)
8343	{
8344	if (g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_NMI_WINDOW_EXIT)
8345	{
8346	if (!(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_NMI_WINDOW_EXIT))
8347	{
8348	pVmcsInfo->u32ProcCtls \|= VMX_PROC_CTLS_NMI_WINDOW_EXIT;
8349	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
8350	AssertRC(rc);
8351	Log4Func(("Setup NMI-window exiting\n"));
8352	}
8353	} /* else we will deliver NMIs whenever we VM-exit next, even possibly nesting NMIs. Can't be helped on ancient CPUs. */
8354	}
8355
8356
8357	/**
8358	* Clears the NMI-window exiting control in the VMCS.
8359	*
8360	* @param pVmcsInfo The VMCS info. object.
8361	*/
8362	DECLINLINE(void) hmR0VmxClearNmiWindowExitVmcs(PVMXVMCSINFO pVmcsInfo)
8363	{
8364	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_NMI_WINDOW_EXIT)
8365	{
8366	pVmcsInfo->u32ProcCtls &= ~VMX_PROC_CTLS_NMI_WINDOW_EXIT;
8367	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
8368	AssertRC(rc);
8369	}
8370	}
8371
8372
8373	/**
8374	* Does the necessary state syncing before returning to ring-3 for any reason
8375	* (longjmp, preemption, voluntary exits to ring-3) from VT-x.
8376	*
8377	* @returns VBox status code.
8378	* @param pVCpu The cross context virtual CPU structure.
8379	* @param fImportState Whether to import the guest state from the VMCS back
8380	* to the guest-CPU context.
8381	*
8382	* @remarks No-long-jmp zone!!!
8383	*/
8384	static int hmR0VmxLeave(PVMCPUCC pVCpu, bool fImportState)
8385	{
8386	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
8387	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
8388
8389	RTCPUID const idCpu = RTMpCpuId();
8390	Log4Func(("HostCpuId=%u\n", idCpu));
8391
8392	/*
8393	* !!! IMPORTANT !!!
8394	* If you modify code here, check whether VMXR0CallRing3Callback() needs to be updated too.
8395	*/
8396
8397	/* Save the guest state if necessary. */
8398	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
8399	if (fImportState)
8400	{
8401	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
8402	AssertRCReturn(rc, rc);
8403	}
8404
8405	/* Restore host FPU state if necessary. We will resync on next R0 reentry. */
8406	CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
8407	Assert(!CPUMIsGuestFPUStateActive(pVCpu));
8408
8409	/* Restore host debug registers if necessary. We will resync on next R0 reentry. */
8410	#ifdef VBOX_STRICT
8411	if (CPUMIsHyperDebugStateActive(pVCpu))
8412	Assert(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_MOV_DR_EXIT);
8413	#endif
8414	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, true /* save DR6 */);
8415	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
8416	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
8417
8418	/* Restore host-state bits that VT-x only restores partially. */
8419	if (pVCpu->hmr0.s.vmx.fRestoreHostFlags > VMX_RESTORE_HOST_REQUIRED)
8420	{
8421	Log4Func(("Restoring Host State: fRestoreHostFlags=%#RX32 HostCpuId=%u\n", pVCpu->hmr0.s.vmx.fRestoreHostFlags, idCpu));
8422	VMXRestoreHostState(pVCpu->hmr0.s.vmx.fRestoreHostFlags, &pVCpu->hmr0.s.vmx.RestoreHost);
8423	}
8424	pVCpu->hmr0.s.vmx.fRestoreHostFlags = 0;
8425
8426	/* Restore the lazy host MSRs as we're leaving VT-x context. */
8427	if (pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST)
8428	{
8429	/* We shouldn't restore the host MSRs without saving the guest MSRs first. */
8430	if (!fImportState)
8431	{
8432	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_KERNEL_GS_BASE \| CPUMCTX_EXTRN_SYSCALL_MSRS);
8433	AssertRCReturn(rc, rc);
8434	}
8435	hmR0VmxLazyRestoreHostMsrs(pVCpu);
8436	Assert(!pVCpu->hmr0.s.vmx.fLazyMsrs);
8437	}
8438	else
8439	pVCpu->hmr0.s.vmx.fLazyMsrs = 0;
8440
8441	/* Update auto-load/store host MSRs values when we re-enter VT-x (as we could be on a different CPU). */
8442	pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs = false;
8443
8444	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
8445	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatImportGuestState);
8446	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExportGuestState);
8447	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatPreExit);
8448	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExitHandling);
8449	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExitIO);
8450	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExitMovCRx);
8451	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExitXcptNmi);
8452	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExitVmentry);
8453	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
8454
8455	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
8456
8457	/** @todo This partially defeats the purpose of having preemption hooks.
8458	* The problem is, deregistering the hooks should be moved to a place that
8459	* lasts until the EMT is about to be destroyed not everytime while leaving HM
8460	* context.
8461	*/
8462	int rc = hmR0VmxClearVmcs(pVmcsInfo);
8463	AssertRCReturn(rc, rc);
8464
8465	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
8466	/*
8467	* A valid shadow VMCS is made active as part of VM-entry. It is necessary to
8468	* clear a shadow VMCS before allowing that VMCS to become active on another
8469	* logical processor. We may or may not be importing guest state which clears
8470	* it, so cover for it here.
8471	*
8472	* See Intel spec. 24.11.1 "Software Use of Virtual-Machine Control Structures".
8473	*/
8474	if ( pVmcsInfo->pvShadowVmcs
8475	&& pVmcsInfo->fShadowVmcsState != VMX_V_VMCS_LAUNCH_STATE_CLEAR)
8476	{
8477	rc = hmR0VmxClearShadowVmcs(pVmcsInfo);
8478	AssertRCReturn(rc, rc);
8479	}
8480
8481	/*
8482	* Flag that we need to re-export the host state if we switch to this VMCS before
8483	* executing guest or nested-guest code.
8484	*/
8485	pVmcsInfo->idHostCpuState = NIL_RTCPUID;
8486	#endif
8487
8488	Log4Func(("Cleared Vmcs. HostCpuId=%u\n", idCpu));
8489	NOREF(idCpu);
8490	return VINF_SUCCESS;
8491	}
8492
8493
8494	/**
8495	* Leaves the VT-x session.
8496	*
8497	* @returns VBox status code.
8498	* @param pVCpu The cross context virtual CPU structure.
8499	*
8500	* @remarks No-long-jmp zone!!!
8501	*/
8502	static int hmR0VmxLeaveSession(PVMCPUCC pVCpu)
8503	{
8504	HM_DISABLE_PREEMPT(pVCpu);
8505	HMVMX_ASSERT_CPU_SAFE(pVCpu);
8506	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
8507	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
8508
8509	/* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
8510	and done this from the VMXR0ThreadCtxCallback(). */
8511	if (!pVCpu->hmr0.s.fLeaveDone)
8512	{
8513	int rc2 = hmR0VmxLeave(pVCpu, true /* fImportState */);
8514	AssertRCReturnStmt(rc2, HM_RESTORE_PREEMPT(), rc2);
8515	pVCpu->hmr0.s.fLeaveDone = true;
8516	}
8517	Assert(!pVCpu->cpum.GstCtx.fExtrn);
8518
8519	/*
8520	* !!! IMPORTANT !!!
8521	* If you modify code here, make sure to check whether VMXR0CallRing3Callback() needs to be updated too.
8522	*/
8523
8524	/* Deregister hook now that we've left HM context before re-enabling preemption. */
8525	/** @todo Deregistering here means we need to VMCLEAR always
8526	* (longjmp/exit-to-r3) in VT-x which is not efficient, eliminate need
8527	* for calling VMMR0ThreadCtxHookDisable here! */
8528	VMMR0ThreadCtxHookDisable(pVCpu);
8529
8530	/* Leave HM context. This takes care of local init (term) and deregistering the longjmp-to-ring-3 callback. */
8531	int rc = HMR0LeaveCpu(pVCpu);
8532	HM_RESTORE_PREEMPT();
8533	return rc;
8534	}
8535
8536
8537	/**
8538	* Does the necessary state syncing before doing a longjmp to ring-3.
8539	*
8540	* @returns VBox status code.
8541	* @param pVCpu The cross context virtual CPU structure.
8542	*
8543	* @remarks No-long-jmp zone!!!
8544	*/
8545	DECLINLINE(int) hmR0VmxLongJmpToRing3(PVMCPUCC pVCpu)
8546	{
8547	return hmR0VmxLeaveSession(pVCpu);
8548	}
8549
8550
8551	/**
8552	* Take necessary actions before going back to ring-3.
8553	*
8554	* An action requires us to go back to ring-3. This function does the necessary
8555	* steps before we can safely return to ring-3. This is not the same as longjmps
8556	* to ring-3, this is voluntary and prepares the guest so it may continue
8557	* executing outside HM (recompiler/IEM).
8558	*
8559	* @returns VBox status code.
8560	* @param pVCpu The cross context virtual CPU structure.
8561	* @param rcExit The reason for exiting to ring-3. Can be
8562	* VINF_VMM_UNKNOWN_RING3_CALL.
8563	*/
8564	static int hmR0VmxExitToRing3(PVMCPUCC pVCpu, VBOXSTRICTRC rcExit)
8565	{
8566	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
8567
8568	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
8569	if (RT_UNLIKELY(rcExit == VERR_VMX_INVALID_VMCS_PTR))
8570	{
8571	VMXGetCurrentVmcs(&pVCpu->hm.s.vmx.LastError.HCPhysCurrentVmcs);
8572	pVCpu->hm.s.vmx.LastError.u32VmcsRev = (uint32_t )pVmcsInfo->pvVmcs;
8573	pVCpu->hm.s.vmx.LastError.idEnteredCpu = pVCpu->hmr0.s.idEnteredCpu;
8574	/* LastError.idCurrentCpu was updated in hmR0VmxPreRunGuestCommitted(). */
8575	}
8576
8577	/* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
8578	VMMRZCallRing3Disable(pVCpu);
8579	Log4Func(("rcExit=%d\n", VBOXSTRICTRC_VAL(rcExit)));
8580
8581	/*
8582	* Convert any pending HM events back to TRPM due to premature exits to ring-3.
8583	* We need to do this only on returns to ring-3 and not for longjmps to ring3.
8584	*
8585	* This is because execution may continue from ring-3 and we would need to inject
8586	* the event from there (hence place it back in TRPM).
8587	*/
8588	if (pVCpu->hm.s.Event.fPending)
8589	{
8590	hmR0VmxPendingEventToTrpmTrap(pVCpu);
8591	Assert(!pVCpu->hm.s.Event.fPending);
8592
8593	/* Clear the events from the VMCS. */
8594	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, 0); AssertRC(rc);
8595	rc = VMXWriteVmcs32(VMX_VMCS_GUEST_PENDING_DEBUG_XCPTS, 0); AssertRC(rc);
8596	}
8597	#ifdef VBOX_STRICT
8598	/*
8599	* We check for rcExit here since for errors like VERR_VMX_UNABLE_TO_START_VM (which are
8600	* fatal), we don't care about verifying duplicate injection of events. Errors like
8601	* VERR_EM_INTERPRET are converted to their VINF_* counterparts -prior- to calling this
8602	* function so those should and will be checked below.
8603	*/
8604	else if (RT_SUCCESS(rcExit))
8605	{
8606	/*
8607	* Ensure we don't accidentally clear a pending HM event without clearing the VMCS.
8608	* This can be pretty hard to debug otherwise, interrupts might get injected twice
8609	* occasionally, see @bugref{9180#c42}.
8610	*
8611	* However, if the VM-entry failed, any VM entry-interruption info. field would
8612	* be left unmodified as the event would not have been injected to the guest. In
8613	* such cases, don't assert, we're not going to continue guest execution anyway.
8614	*/
8615	uint32_t uExitReason;
8616	uint32_t uEntryIntInfo;
8617	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_REASON, &uExitReason);
8618	rc \|= VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, &uEntryIntInfo);
8619	AssertRC(rc);
8620	AssertMsg(VMX_EXIT_REASON_HAS_ENTRY_FAILED(uExitReason) \|\| !VMX_ENTRY_INT_INFO_IS_VALID(uEntryIntInfo),
8621	("uExitReason=%#RX32 uEntryIntInfo=%#RX32 rcExit=%d\n", uExitReason, uEntryIntInfo, VBOXSTRICTRC_VAL(rcExit)));
8622	}
8623	#endif
8624
8625	/*
8626	* Clear the interrupt-window and NMI-window VMCS controls as we could have got
8627	* a VM-exit with higher priority than interrupt-window or NMI-window VM-exits
8628	* (e.g. TPR below threshold).
8629	*/
8630	if (!CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
8631	{
8632	hmR0VmxClearIntWindowExitVmcs(pVmcsInfo);
8633	hmR0VmxClearNmiWindowExitVmcs(pVmcsInfo);
8634	}
8635
8636	/* If we're emulating an instruction, we shouldn't have any TRPM traps pending
8637	and if we're injecting an event we should have a TRPM trap pending. */
8638	AssertMsg(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT \|\| TRPMHasTrap(pVCpu), ("%Rrc\n", VBOXSTRICTRC_VAL(rcExit)));
8639	#ifndef DEBUG_bird /* Triggered after firing an NMI against NT4SP1, possibly a triple fault in progress. */
8640	AssertMsg(rcExit != VINF_EM_RAW_EMULATE_INSTR \|\| !TRPMHasTrap(pVCpu), ("%Rrc\n", VBOXSTRICTRC_VAL(rcExit)));
8641	#endif
8642
8643	/* Save guest state and restore host state bits. */
8644	int rc = hmR0VmxLeaveSession(pVCpu);
8645	AssertRCReturn(rc, rc);
8646	STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
8647
8648	/* Thread-context hooks are unregistered at this point!!! */
8649	/* Ring-3 callback notifications are unregistered at this point!!! */
8650
8651	/* Sync recompiler state. */
8652	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
8653	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
8654	\| CPUM_CHANGED_LDTR
8655	\| CPUM_CHANGED_GDTR
8656	\| CPUM_CHANGED_IDTR
8657	\| CPUM_CHANGED_TR
8658	\| CPUM_CHANGED_HIDDEN_SEL_REGS);
8659	if ( pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging
8660	&& CPUMIsGuestPagingEnabledEx(&pVCpu->cpum.GstCtx))
8661	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
8662
8663	Assert(!pVCpu->hmr0.s.fClearTrapFlag);
8664
8665	/* Update the exit-to-ring 3 reason. */
8666	pVCpu->hm.s.rcLastExitToR3 = VBOXSTRICTRC_VAL(rcExit);
8667
8668	/* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
8669	if ( rcExit != VINF_EM_RAW_INTERRUPT
8670	\|\| CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
8671	{
8672	Assert(!(pVCpu->cpum.GstCtx.fExtrn & HMVMX_CPUMCTX_EXTRN_ALL));
8673	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
8674	}
8675
8676	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
8677	VMMRZCallRing3Enable(pVCpu);
8678	return rc;
8679	}
8680
8681
8682	/**
8683	* VMMRZCallRing3() callback wrapper which saves the guest state before we
8684	* longjump to ring-3 and possibly get preempted.
8685	*
8686	* @returns VBox status code.
8687	* @param pVCpu The cross context virtual CPU structure.
8688	* @param enmOperation The operation causing the ring-3 longjump.
8689	*/
8690	VMMR0DECL(int) VMXR0CallRing3Callback(PVMCPUCC pVCpu, VMMCALLRING3 enmOperation)
8691	{
8692	if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
8693	{
8694	/*
8695	* !!! IMPORTANT !!!
8696	* If you modify code here, check whether hmR0VmxLeave() and hmR0VmxLeaveSession() needs to be updated too.
8697	* This is a stripped down version which gets out ASAP, trying to not trigger any further assertions.
8698	*/
8699	VMMRZCallRing3RemoveNotification(pVCpu);
8700	VMMRZCallRing3Disable(pVCpu);
8701	HM_DISABLE_PREEMPT(pVCpu);
8702
8703	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
8704	hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
8705	CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
8706	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, true /* save DR6 */);
8707
8708	/* Restore host-state bits that VT-x only restores partially. */
8709	if (pVCpu->hmr0.s.vmx.fRestoreHostFlags > VMX_RESTORE_HOST_REQUIRED)
8710	VMXRestoreHostState(pVCpu->hmr0.s.vmx.fRestoreHostFlags, &pVCpu->hmr0.s.vmx.RestoreHost);
8711	pVCpu->hmr0.s.vmx.fRestoreHostFlags = 0;
8712
8713	/* Restore the lazy host MSRs as we're leaving VT-x context. */
8714	if (pVCpu->hmr0.s.vmx.fLazyMsrs & VMX_LAZY_MSRS_LOADED_GUEST)
8715	hmR0VmxLazyRestoreHostMsrs(pVCpu);
8716
8717	/* Update auto-load/store host MSRs values when we re-enter VT-x (as we could be on a different CPU). */
8718	pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs = false;
8719	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
8720
8721	/* Clear the current VMCS data back to memory (shadow VMCS if any would have been
8722	cleared as part of importing the guest state above. */
8723	hmR0VmxClearVmcs(pVmcsInfo);
8724
8725	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
8726	VMMR0ThreadCtxHookDisable(pVCpu);
8727
8728	/* Leave HM context. This takes care of local init (term). */
8729	HMR0LeaveCpu(pVCpu);
8730	HM_RESTORE_PREEMPT();
8731	return VINF_SUCCESS;
8732	}
8733
8734	Assert(pVCpu);
8735	Assert(VMMRZCallRing3IsEnabled(pVCpu));
8736	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
8737
8738	VMMRZCallRing3Disable(pVCpu);
8739
8740	Log4Func(("-> hmR0VmxLongJmpToRing3 enmOperation=%d\n", enmOperation));
8741
8742	int rc = hmR0VmxLongJmpToRing3(pVCpu);
8743	AssertRCReturn(rc, rc);
8744
8745	VMMRZCallRing3Enable(pVCpu);
8746	return VINF_SUCCESS;
8747	}
8748
8749
8750	/**
8751	* Pushes a 2-byte value onto the real-mode (in virtual-8086 mode) guest's
8752	* stack.
8753	*
8754	* @returns Strict VBox status code (i.e. informational status codes too).
8755	* @retval VINF_EM_RESET if pushing a value to the stack caused a triple-fault.
8756	* @param pVCpu The cross context virtual CPU structure.
8757	* @param uValue The value to push to the guest stack.
8758	*/
8759	static VBOXSTRICTRC hmR0VmxRealModeGuestStackPush(PVMCPUCC pVCpu, uint16_t uValue)
8760	{
8761	/*
8762	* The stack limit is 0xffff in real-on-virtual 8086 mode. Real-mode with weird stack limits cannot be run in
8763	* virtual 8086 mode in VT-x. See Intel spec. 26.3.1.2 "Checks on Guest Segment Registers".
8764	* See Intel Instruction reference for PUSH and Intel spec. 22.33.1 "Segment Wraparound".
8765	*/
8766	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
8767	if (pCtx->sp == 1)
8768	return VINF_EM_RESET;
8769	pCtx->sp -= sizeof(uint16_t); /* May wrap around which is expected behaviour. */
8770	int rc = PGMPhysSimpleWriteGCPhys(pVCpu->CTX_SUFF(pVM), pCtx->ss.u64Base + pCtx->sp, &uValue, sizeof(uint16_t));
8771	AssertRC(rc);
8772	return rc;
8773	}
8774
8775
8776	/**
8777	* Injects an event into the guest upon VM-entry by updating the relevant fields
8778	* in the VM-entry area in the VMCS.
8779	*
8780	* @returns Strict VBox status code (i.e. informational status codes too).
8781	* @retval VINF_SUCCESS if the event is successfully injected into the VMCS.
8782	* @retval VINF_EM_RESET if event injection resulted in a triple-fault.
8783	*
8784	* @param pVCpu The cross context virtual CPU structure.
8785	* @param pVmxTransient The VMX-transient structure.
8786	* @param pEvent The event being injected.
8787	* @param pfIntrState Pointer to the VT-x guest-interruptibility-state. This
8788	* will be updated if necessary. This cannot not be NULL.
8789	* @param fStepping Whether we're single-stepping guest execution and should
8790	* return VINF_EM_DBG_STEPPED if the event is injected
8791	* directly (registers modified by us, not by hardware on
8792	* VM-entry).
8793	*/
8794	static VBOXSTRICTRC hmR0VmxInjectEventVmcs(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, PCHMEVENT pEvent, bool fStepping,
8795	uint32_t *pfIntrState)
8796	{
8797	/* Intel spec. 24.8.3 "VM-Entry Controls for Event Injection" specifies the interruption-information field to be 32-bits. */
8798	AssertMsg(!RT_HI_U32(pEvent->u64IntInfo), ("%#RX64\n", pEvent->u64IntInfo));
8799	Assert(pfIntrState);
8800
8801	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
8802	uint32_t u32IntInfo = pEvent->u64IntInfo;
8803	uint32_t const u32ErrCode = pEvent->u32ErrCode;
8804	uint32_t const cbInstr = pEvent->cbInstr;
8805	RTGCUINTPTR const GCPtrFault = pEvent->GCPtrFaultAddress;
8806	uint8_t const uVector = VMX_ENTRY_INT_INFO_VECTOR(u32IntInfo);
8807	uint32_t const uIntType = VMX_ENTRY_INT_INFO_TYPE(u32IntInfo);
8808
8809	#ifdef VBOX_STRICT
8810	/*
8811	* Validate the error-code-valid bit for hardware exceptions.
8812	* No error codes for exceptions in real-mode.
8813	*
8814	* See Intel spec. 20.1.4 "Interrupt and Exception Handling"
8815	*/
8816	if ( uIntType == VMX_EXIT_INT_INFO_TYPE_HW_XCPT
8817	&& !CPUMIsGuestInRealModeEx(pCtx))
8818	{
8819	switch (uVector)
8820	{
8821	case X86_XCPT_PF:
8822	case X86_XCPT_DF:
8823	case X86_XCPT_TS:
8824	case X86_XCPT_NP:
8825	case X86_XCPT_SS:
8826	case X86_XCPT_GP:
8827	case X86_XCPT_AC:
8828	AssertMsg(VMX_ENTRY_INT_INFO_IS_ERROR_CODE_VALID(u32IntInfo),
8829	("Error-code-valid bit not set for exception that has an error code uVector=%#x\n", uVector));
8830	RT_FALL_THRU();
8831	default:
8832	break;
8833	}
8834	}
8835
8836	/* Cannot inject an NMI when block-by-MOV SS is in effect. */
8837	Assert( uIntType != VMX_EXIT_INT_INFO_TYPE_NMI
8838	\|\| !(*pfIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS));
8839	#endif
8840
8841	if ( uIntType == VMX_EXIT_INT_INFO_TYPE_HW_XCPT
8842	\|\| uIntType == VMX_EXIT_INT_INFO_TYPE_NMI
8843	\|\| uIntType == VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT
8844	\|\| uIntType == VMX_EXIT_INT_INFO_TYPE_SW_XCPT)
8845	{
8846	Assert(uVector <= X86_XCPT_LAST);
8847	Assert(uIntType != VMX_EXIT_INT_INFO_TYPE_NMI \|\| uVector == X86_XCPT_NMI);
8848	Assert(uIntType != VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT \|\| uVector == X86_XCPT_DB);
8849	STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedXcptsR0[uVector]);
8850	}
8851	else
8852	STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[uVector & MASK_INJECT_IRQ_STAT]);
8853
8854	/*
8855	* Hardware interrupts & exceptions cannot be delivered through the software interrupt
8856	* redirection bitmap to the real mode task in virtual-8086 mode. We must jump to the
8857	* interrupt handler in the (real-mode) guest.
8858	*
8859	* See Intel spec. 20.3 "Interrupt and Exception handling in Virtual-8086 Mode".
8860	* See Intel spec. 20.1.4 "Interrupt and Exception Handling" for real-mode interrupt handling.
8861	*/
8862	if (CPUMIsGuestInRealModeEx(pCtx)) /* CR0.PE bit changes are always intercepted, so it's up to date. */
8863	{
8864	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fUnrestrictedGuest)
8865	{
8866	/*
8867	* For CPUs with unrestricted guest execution enabled and with the guest
8868	* in real-mode, we must not set the deliver-error-code bit.
8869	*
8870	* See Intel spec. 26.2.1.3 "VM-Entry Control Fields".
8871	*/
8872	u32IntInfo &= ~VMX_ENTRY_INT_INFO_ERROR_CODE_VALID;
8873	}
8874	else
8875	{
8876	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
8877	Assert(PDMVmmDevHeapIsEnabled(pVM));
8878	Assert(pVM->hm.s.vmx.pRealModeTSS);
8879	Assert(!CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx));
8880
8881	/* We require RIP, RSP, RFLAGS, CS, IDTR, import them. */
8882	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
8883	int rc2 = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_SREG_MASK \| CPUMCTX_EXTRN_TABLE_MASK
8884	\| CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_RFLAGS);
8885	AssertRCReturn(rc2, rc2);
8886
8887	/* Check if the interrupt handler is present in the IVT (real-mode IDT). IDT limit is (4N - 1). */
8888	size_t const cbIdtEntry = sizeof(X86IDTR16);
8889	if (uVector * cbIdtEntry + (cbIdtEntry - 1) > pCtx->idtr.cbIdt)
8890	{
8891	/* If we are trying to inject a #DF with no valid IDT entry, return a triple-fault. */
8892	if (uVector == X86_XCPT_DF)
8893	return VINF_EM_RESET;
8894
8895	/* If we're injecting a #GP with no valid IDT entry, inject a double-fault.
8896	No error codes for exceptions in real-mode. */
8897	if (uVector == X86_XCPT_GP)
8898	{
8899	uint32_t const uXcptDfInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_DF)
8900	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_ENTRY_INT_INFO_TYPE_HW_XCPT)
8901	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 0)
8902	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
8903	HMEVENT EventXcptDf;
8904	RT_ZERO(EventXcptDf);
8905	EventXcptDf.u64IntInfo = uXcptDfInfo;
8906	return hmR0VmxInjectEventVmcs(pVCpu, pVmxTransient, &EventXcptDf, fStepping, pfIntrState);
8907	}
8908
8909	/*
8910	* If we're injecting an event with no valid IDT entry, inject a #GP.
8911	* No error codes for exceptions in real-mode.
8912	*
8913	* See Intel spec. 20.1.4 "Interrupt and Exception Handling"
8914	*/
8915	uint32_t const uXcptGpInfo = RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VECTOR, X86_XCPT_GP)
8916	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_TYPE, VMX_ENTRY_INT_INFO_TYPE_HW_XCPT)
8917	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_ERR_CODE_VALID, 0)
8918	\| RT_BF_MAKE(VMX_BF_ENTRY_INT_INFO_VALID, 1);
8919	HMEVENT EventXcptGp;
8920	RT_ZERO(EventXcptGp);
8921	EventXcptGp.u64IntInfo = uXcptGpInfo;
8922	return hmR0VmxInjectEventVmcs(pVCpu, pVmxTransient, &EventXcptGp, fStepping, pfIntrState);
8923	}
8924
8925	/* Software exceptions (#BP and #OF exceptions thrown as a result of INT3 or INTO) */
8926	uint16_t uGuestIp = pCtx->ip;
8927	if (uIntType == VMX_ENTRY_INT_INFO_TYPE_SW_XCPT)
8928	{
8929	Assert(uVector == X86_XCPT_BP \|\| uVector == X86_XCPT_OF);
8930	/* #BP and #OF are both benign traps, we need to resume the next instruction. */
8931	uGuestIp = pCtx->ip + (uint16_t)cbInstr;
8932	}
8933	else if (uIntType == VMX_ENTRY_INT_INFO_TYPE_SW_INT)
8934	uGuestIp = pCtx->ip + (uint16_t)cbInstr;
8935
8936	/* Get the code segment selector and offset from the IDT entry for the interrupt handler. */
8937	X86IDTR16 IdtEntry;
8938	RTGCPHYS const GCPhysIdtEntry = (RTGCPHYS)pCtx->idtr.pIdt + uVector * cbIdtEntry;
8939	rc2 = PGMPhysSimpleReadGCPhys(pVM, &IdtEntry, GCPhysIdtEntry, cbIdtEntry);
8940	AssertRCReturn(rc2, rc2);
8941
8942	/* Construct the stack frame for the interrupt/exception handler. */
8943	VBOXSTRICTRC rcStrict;
8944	rcStrict = hmR0VmxRealModeGuestStackPush(pVCpu, pCtx->eflags.u32);
8945	if (rcStrict == VINF_SUCCESS)
8946	{
8947	rcStrict = hmR0VmxRealModeGuestStackPush(pVCpu, pCtx->cs.Sel);
8948	if (rcStrict == VINF_SUCCESS)
8949	rcStrict = hmR0VmxRealModeGuestStackPush(pVCpu, uGuestIp);
8950	}
8951
8952	/* Clear the required eflag bits and jump to the interrupt/exception handler. */
8953	if (rcStrict == VINF_SUCCESS)
8954	{
8955	pCtx->eflags.u32 &= ~(X86_EFL_IF \| X86_EFL_TF \| X86_EFL_RF \| X86_EFL_AC);
8956	pCtx->rip = IdtEntry.offSel;
8957	pCtx->cs.Sel = IdtEntry.uSel;
8958	pCtx->cs.ValidSel = IdtEntry.uSel;
8959	pCtx->cs.u64Base = IdtEntry.uSel << cbIdtEntry;
8960	if ( uIntType == VMX_ENTRY_INT_INFO_TYPE_HW_XCPT
8961	&& uVector == X86_XCPT_PF)
8962	pCtx->cr2 = GCPtrFault;
8963
8964	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CS \| HM_CHANGED_GUEST_CR2
8965	\| HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS
8966	\| HM_CHANGED_GUEST_RSP);
8967
8968	/*
8969	* If we delivered a hardware exception (other than an NMI) and if there was
8970	* block-by-STI in effect, we should clear it.
8971	*/
8972	if (*pfIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)
8973	{
8974	Assert( uIntType != VMX_ENTRY_INT_INFO_TYPE_NMI
8975	&& uIntType != VMX_ENTRY_INT_INFO_TYPE_EXT_INT);
8976	Log4Func(("Clearing inhibition due to STI\n"));
8977	*pfIntrState &= ~VMX_VMCS_GUEST_INT_STATE_BLOCK_STI;
8978	}
8979
8980	Log4(("Injected real-mode: u32IntInfo=%#x u32ErrCode=%#x cbInstr=%#x Eflags=%#x CS:EIP=%04x:%04x\n",
8981	u32IntInfo, u32ErrCode, cbInstr, pCtx->eflags.u, pCtx->cs.Sel, pCtx->eip));
8982
8983	/*
8984	* The event has been truly dispatched to the guest. Mark it as no longer pending so
8985	* we don't attempt to undo it if we are returning to ring-3 before executing guest code.
8986	*/
8987	pVCpu->hm.s.Event.fPending = false;
8988
8989	/*
8990	* If we eventually support nested-guest execution without unrestricted guest execution,
8991	* we should set fInterceptEvents here.
8992	*/
8993	Assert(!pVmxTransient->fIsNestedGuest);
8994
8995	/* If we're stepping and we've changed cs:rip above, bail out of the VMX R0 execution loop. */
8996	if (fStepping)
8997	rcStrict = VINF_EM_DBG_STEPPED;
8998	}
8999	AssertMsg(rcStrict == VINF_SUCCESS \|\| rcStrict == VINF_EM_RESET \|\| (rcStrict == VINF_EM_DBG_STEPPED && fStepping),
9000	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
9001	return rcStrict;
9002	}
9003	}
9004
9005	/*
9006	* Validate.
9007	*/
9008	Assert(VMX_ENTRY_INT_INFO_IS_VALID(u32IntInfo)); /* Bit 31 (Valid bit) must be set by caller. */
9009	Assert(!(u32IntInfo & VMX_BF_ENTRY_INT_INFO_RSVD_12_30_MASK)); /* Bits 30:12 MBZ. */
9010
9011	/*
9012	* Inject the event into the VMCS.
9013	*/
9014	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, u32IntInfo);
9015	if (VMX_ENTRY_INT_INFO_IS_ERROR_CODE_VALID(u32IntInfo))
9016	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY_EXCEPTION_ERRCODE, u32ErrCode);
9017	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_ENTRY_INSTR_LENGTH, cbInstr);
9018	AssertRC(rc);
9019
9020	/*
9021	* Update guest CR2 if this is a page-fault.
9022	*/
9023	if (VMX_ENTRY_INT_INFO_IS_XCPT_PF(u32IntInfo))
9024	pCtx->cr2 = GCPtrFault;
9025
9026	Log4(("Injecting u32IntInfo=%#x u32ErrCode=%#x cbInstr=%#x CR2=%#RX64\n", u32IntInfo, u32ErrCode, cbInstr, pCtx->cr2));
9027	return VINF_SUCCESS;
9028	}
9029
9030
9031	/**
9032	* Evaluates the event to be delivered to the guest and sets it as the pending
9033	* event.
9034	*
9035	* Toggling of interrupt force-flags here is safe since we update TRPM on premature
9036	* exits to ring-3 before executing guest code, see hmR0VmxExitToRing3(). We must
9037	* NOT restore these force-flags.
9038	*
9039	* @returns Strict VBox status code (i.e. informational status codes too).
9040	* @param pVCpu The cross context virtual CPU structure.
9041	* @param pVmxTransient The VMX-transient structure.
9042	* @param pfIntrState Where to store the VT-x guest-interruptibility state.
9043	*/
9044	static VBOXSTRICTRC hmR0VmxEvaluatePendingEvent(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, uint32_t *pfIntrState)
9045	{
9046	Assert(pfIntrState);
9047	Assert(!TRPMHasTrap(pVCpu));
9048
9049	/*
9050	* Compute/update guest-interruptibility state related FFs.
9051	* The FFs will be used below while evaluating events to be injected.
9052	*/
9053	*pfIntrState = hmR0VmxGetGuestIntrStateAndUpdateFFs(pVCpu);
9054
9055	/*
9056	* Evaluate if a new event needs to be injected.
9057	* An event that's already pending has already performed all necessary checks.
9058	*/
9059	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
9060	bool const fIsNestedGuest = pVmxTransient->fIsNestedGuest;
9061	if ( !pVCpu->hm.s.Event.fPending
9062	&& !VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
9063	{
9064	/** @todo SMI. SMIs take priority over NMIs. */
9065
9066	/*
9067	* NMIs.
9068	* NMIs take priority over external interrupts.
9069	*/
9070	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
9071	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI))
9072	{
9073	/*
9074	* For a guest, the FF always indicates the guest's ability to receive an NMI.
9075	*
9076	* For a nested-guest, the FF always indicates the outer guest's ability to
9077	* receive an NMI while the guest-interruptibility state bit depends on whether
9078	* the nested-hypervisor is using virtual-NMIs.
9079	*/
9080	if (!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_BLOCK_NMIS))
9081	{
9082	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
9083	if ( fIsNestedGuest
9084	&& CPUMIsGuestVmxPinCtlsSet(pCtx, VMX_PIN_CTLS_NMI_EXIT))
9085	return IEMExecVmxVmexitXcptNmi(pVCpu);
9086	#endif
9087	hmR0VmxSetPendingXcptNmi(pVCpu);
9088	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
9089	Log4Func(("NMI pending injection\n"));
9090
9091	/* We've injected the NMI, bail. */
9092	return VINF_SUCCESS;
9093	}
9094	else if (!fIsNestedGuest)
9095	hmR0VmxSetNmiWindowExitVmcs(pVmcsInfo);
9096	}
9097
9098	/*
9099	* External interrupts (PIC/APIC).
9100	* Once PDMGetInterrupt() returns a valid interrupt we -must- deliver it.
9101	* We cannot re-request the interrupt from the controller again.
9102	*/
9103	if ( VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
9104	&& !pVCpu->hm.s.fSingleInstruction)
9105	{
9106	Assert(!DBGFIsStepping(pVCpu));
9107	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_RFLAGS);
9108	AssertRC(rc);
9109
9110	/*
9111	* We must not check EFLAGS directly when executing a nested-guest, use
9112	* CPUMIsGuestPhysIntrEnabled() instead as EFLAGS.IF does not control the blocking of
9113	* external interrupts when "External interrupt exiting" is set. This fixes a nasty
9114	* SMP hang while executing nested-guest VCPUs on spinlocks which aren't rescued by
9115	* other VM-exits (like a preemption timer), see @bugref{9562#c18}.
9116	*
9117	* See Intel spec. 25.4.1 "Event Blocking".
9118	*/
9119	if (CPUMIsGuestPhysIntrEnabled(pVCpu))
9120	{
9121	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
9122	if ( fIsNestedGuest
9123	&& CPUMIsGuestVmxPinCtlsSet(pCtx, VMX_PIN_CTLS_EXT_INT_EXIT))
9124	{
9125	VBOXSTRICTRC rcStrict = IEMExecVmxVmexitExtInt(pVCpu, 0 /* uVector /, true / fIntPending */);
9126	if (rcStrict != VINF_VMX_INTERCEPT_NOT_ACTIVE)
9127	return rcStrict;
9128	}
9129	#endif
9130	uint8_t u8Interrupt;
9131	rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
9132	if (RT_SUCCESS(rc))
9133	{
9134	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
9135	if ( fIsNestedGuest
9136	&& CPUMIsGuestVmxPinCtlsSet(pCtx, VMX_PIN_CTLS_EXT_INT_EXIT))
9137	{
9138	VBOXSTRICTRC rcStrict = IEMExecVmxVmexitExtInt(pVCpu, u8Interrupt, false /* fIntPending */);
9139	Assert(rcStrict != VINF_VMX_INTERCEPT_NOT_ACTIVE);
9140	return rcStrict;
9141	}
9142	#endif
9143	hmR0VmxSetPendingExtInt(pVCpu, u8Interrupt);
9144	Log4Func(("External interrupt (%#x) pending injection\n", u8Interrupt));
9145	}
9146	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
9147	{
9148	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
9149
9150	if ( !fIsNestedGuest
9151	&& (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW))
9152	hmR0VmxApicSetTprThreshold(pVmcsInfo, u8Interrupt >> 4);
9153	/* else: for nested-guests, TPR threshold is picked up while merging VMCS controls. */
9154
9155	/*
9156	* If the CPU doesn't have TPR shadowing, we will always get a VM-exit on TPR changes and
9157	* APICSetTpr() will end up setting the VMCPU_FF_INTERRUPT_APIC if required, so there is no
9158	* need to re-set this force-flag here.
9159	*/
9160	}
9161	else
9162	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
9163
9164	/* We've injected the interrupt or taken necessary action, bail. */
9165	return VINF_SUCCESS;
9166	}
9167	if (!fIsNestedGuest)
9168	hmR0VmxSetIntWindowExitVmcs(pVmcsInfo);
9169	}
9170	}
9171	else if (!fIsNestedGuest)
9172	{
9173	/*
9174	* An event is being injected or we are in an interrupt shadow. Check if another event is
9175	* pending. If so, instruct VT-x to cause a VM-exit as soon as the guest is ready to accept
9176	* the pending event.
9177	*/
9178	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INTERRUPT_NMI))
9179	hmR0VmxSetNmiWindowExitVmcs(pVmcsInfo);
9180	else if ( VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
9181	&& !pVCpu->hm.s.fSingleInstruction)
9182	hmR0VmxSetIntWindowExitVmcs(pVmcsInfo);
9183	}
9184	/* else: for nested-guests, NMI/interrupt-window exiting will be picked up when merging VMCS controls. */
9185
9186	return VINF_SUCCESS;
9187	}
9188
9189
9190	/**
9191	* Injects any pending events into the guest if the guest is in a state to
9192	* receive them.
9193	*
9194	* @returns Strict VBox status code (i.e. informational status codes too).
9195	* @param pVCpu The cross context virtual CPU structure.
9196	* @param pVmxTransient The VMX-transient structure.
9197	* @param fIntrState The VT-x guest-interruptibility state.
9198	* @param fStepping Whether we are single-stepping the guest using the
9199	* hypervisor debugger and should return
9200	* VINF_EM_DBG_STEPPED if the event was dispatched
9201	* directly.
9202	*/
9203	static VBOXSTRICTRC hmR0VmxInjectPendingEvent(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, uint32_t fIntrState, bool fStepping)
9204	{
9205	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
9206	Assert(VMMRZCallRing3IsEnabled(pVCpu));
9207
9208	#ifdef VBOX_STRICT
9209	/*
9210	* Verify guest-interruptibility state.
9211	*
9212	* We put this in a scoped block so we do not accidentally use fBlockSti or fBlockMovSS,
9213	* since injecting an event may modify the interruptibility state and we must thus always
9214	* use fIntrState.
9215	*/
9216	{
9217	bool const fBlockMovSS = RT_BOOL(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS);
9218	bool const fBlockSti = RT_BOOL(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI);
9219	Assert(!fBlockSti \|\| !(ASMAtomicUoReadU64(&pVCpu->cpum.GstCtx.fExtrn) & CPUMCTX_EXTRN_RFLAGS));
9220	Assert(!fBlockSti \|\| pVCpu->cpum.GstCtx.eflags.Bits.u1IF); /* Cannot set block-by-STI when interrupts are disabled. */
9221	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_SMI)); /* We don't support block-by-SMI yet.*/
9222	Assert(!TRPMHasTrap(pVCpu));
9223	NOREF(fBlockMovSS); NOREF(fBlockSti);
9224	}
9225	#endif
9226
9227	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
9228	if (pVCpu->hm.s.Event.fPending)
9229	{
9230	/*
9231	* Do -not- clear any interrupt-window exiting control here. We might have an interrupt
9232	* pending even while injecting an event and in this case, we want a VM-exit as soon as
9233	* the guest is ready for the next interrupt, see @bugref{6208#c45}.
9234	*
9235	* See Intel spec. 26.6.5 "Interrupt-Window Exiting and Virtual-Interrupt Delivery".
9236	*/
9237	uint32_t const uIntType = VMX_ENTRY_INT_INFO_TYPE(pVCpu->hm.s.Event.u64IntInfo);
9238	#ifdef VBOX_STRICT
9239	if (uIntType == VMX_ENTRY_INT_INFO_TYPE_EXT_INT)
9240	{
9241	Assert(pVCpu->cpum.GstCtx.eflags.u32 & X86_EFL_IF);
9242	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI));
9243	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS));
9244	}
9245	else if (uIntType == VMX_ENTRY_INT_INFO_TYPE_NMI)
9246	{
9247	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI));
9248	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI));
9249	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS));
9250	}
9251	#endif
9252	Log4(("Injecting pending event vcpu[%RU32] u64IntInfo=%#RX64 Type=%#RX32\n", pVCpu->idCpu, pVCpu->hm.s.Event.u64IntInfo,
9253	uIntType));
9254
9255	/*
9256	* Inject the event and get any changes to the guest-interruptibility state.
9257	*
9258	* The guest-interruptibility state may need to be updated if we inject the event
9259	* into the guest IDT ourselves (for real-on-v86 guest injecting software interrupts).
9260	*/
9261	rcStrict = hmR0VmxInjectEventVmcs(pVCpu, pVmxTransient, &pVCpu->hm.s.Event, fStepping, &fIntrState);
9262	AssertRCReturn(VBOXSTRICTRC_VAL(rcStrict), rcStrict);
9263
9264	if (uIntType == VMX_ENTRY_INT_INFO_TYPE_EXT_INT)
9265	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
9266	else
9267	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
9268	}
9269
9270	/*
9271	* Deliver any pending debug exceptions if the guest is single-stepping using EFLAGS.TF and
9272	* is an interrupt shadow (block-by-STI or block-by-MOV SS).
9273	*/
9274	if ( (fIntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_STI \| VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS))
9275	&& !pVmxTransient->fIsNestedGuest)
9276	{
9277	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RFLAGS);
9278
9279	if (!pVCpu->hm.s.fSingleInstruction)
9280	{
9281	/*
9282	* Set or clear the BS bit depending on whether the trap flag is active or not. We need
9283	* to do both since we clear the BS bit from the VMCS while exiting to ring-3.
9284	*/
9285	Assert(!DBGFIsStepping(pVCpu));
9286	uint8_t const fTrapFlag = !!(pVCpu->cpum.GstCtx.eflags.u32 & X86_EFL_TF);
9287	int rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_PENDING_DEBUG_XCPTS, fTrapFlag << VMX_BF_VMCS_PENDING_DBG_XCPT_BS_SHIFT);
9288	AssertRC(rc);
9289	}
9290	else
9291	{
9292	/*
9293	* We must not deliver a debug exception when single-stepping over STI/Mov-SS in the
9294	* hypervisor debugger using EFLAGS.TF but rather clear interrupt inhibition. However,
9295	* we take care of this case in hmR0VmxExportSharedDebugState and also the case if
9296	* we use MTF, so just make sure it's called before executing guest-code.
9297	*/
9298	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_DR_MASK);
9299	}
9300	}
9301	/* else: for nested-guest currently handling while merging controls. */
9302
9303	/*
9304	* Finally, update the guest-interruptibility state.
9305	*
9306	* This is required for the real-on-v86 software interrupt injection, for
9307	* pending debug exceptions as well as updates to the guest state from ring-3 (IEM).
9308	*/
9309	int rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_INT_STATE, fIntrState);
9310	AssertRC(rc);
9311
9312	/*
9313	* There's no need to clear the VM-entry interruption-information field here if we're not
9314	* injecting anything. VT-x clears the valid bit on every VM-exit.
9315	*
9316	* See Intel spec. 24.8.3 "VM-Entry Controls for Event Injection".
9317	*/
9318
9319	Assert(rcStrict == VINF_SUCCESS \|\| rcStrict == VINF_EM_RESET \|\| (rcStrict == VINF_EM_DBG_STEPPED && fStepping));
9320	return rcStrict;
9321	}
9322
9323
9324	/**
9325	* Enters the VT-x session.
9326	*
9327	* @returns VBox status code.
9328	* @param pVCpu The cross context virtual CPU structure.
9329	*/
9330	VMMR0DECL(int) VMXR0Enter(PVMCPUCC pVCpu)
9331	{
9332	AssertPtr(pVCpu);
9333	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.vmx.fSupported);
9334	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
9335
9336	LogFlowFunc(("pVCpu=%p\n", pVCpu));
9337	Assert((pVCpu->hm.s.fCtxChanged & (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE))
9338	== (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE));
9339
9340	#ifdef VBOX_STRICT
9341	/* At least verify VMX is enabled, since we can't check if we're in VMX root mode without #GP'ing. */
9342	RTCCUINTREG uHostCr4 = ASMGetCR4();
9343	if (!(uHostCr4 & X86_CR4_VMXE))
9344	{
9345	LogRelFunc(("X86_CR4_VMXE bit in CR4 is not set!\n"));
9346	return VERR_VMX_X86_CR4_VMXE_CLEARED;
9347	}
9348	#endif
9349
9350	/*
9351	* Do the EMT scheduled L1D and MDS flush here if needed.
9352	*/
9353	if (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_L1D_SCHED)
9354	ASMWrMsr(MSR_IA32_FLUSH_CMD, MSR_IA32_FLUSH_CMD_F_L1D);
9355	else if (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_MDS_SCHED)
9356	hmR0MdsClear();
9357
9358	/*
9359	* Load the appropriate VMCS as the current and active one.
9360	*/
9361	PVMXVMCSINFO pVmcsInfo;
9362	bool const fInNestedGuestMode = CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx);
9363	if (!fInNestedGuestMode)
9364	pVmcsInfo = &pVCpu->hmr0.s.vmx.VmcsInfo;
9365	else
9366	pVmcsInfo = &pVCpu->hmr0.s.vmx.VmcsInfoNstGst;
9367	int rc = hmR0VmxLoadVmcs(pVmcsInfo);
9368	if (RT_SUCCESS(rc))
9369	{
9370	pVCpu->hmr0.s.vmx.fSwitchedToNstGstVmcs = fInNestedGuestMode;
9371	pVCpu->hm.s.vmx.fSwitchedToNstGstVmcsCopyForRing3 = fInNestedGuestMode;
9372	pVCpu->hmr0.s.fLeaveDone = false;
9373	Log4Func(("Loaded Vmcs. HostCpuId=%u\n", RTMpCpuId()));
9374	}
9375	return rc;
9376	}
9377
9378
9379	/**
9380	* The thread-context callback.
9381	*
9382	* This is used together with RTThreadCtxHookCreate() on platforms which
9383	* supports it, and directly from VMMR0EmtPrepareForBlocking() and
9384	* VMMR0EmtResumeAfterBlocking() on platforms which don't.
9385	*
9386	* @param enmEvent The thread-context event.
9387	* @param pVCpu The cross context virtual CPU structure.
9388	* @param fGlobalInit Whether global VT-x/AMD-V init. was used.
9389	* @thread EMT(pVCpu)
9390	*/
9391	VMMR0DECL(void) VMXR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPUCC pVCpu, bool fGlobalInit)
9392	{
9393	AssertPtr(pVCpu);
9394	RT_NOREF1(fGlobalInit);
9395
9396	switch (enmEvent)
9397	{
9398	case RTTHREADCTXEVENT_OUT:
9399	{
9400	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
9401	VMCPU_ASSERT_EMT(pVCpu);
9402
9403	/* No longjmps (logger flushes, locks) in this fragile context. */
9404	VMMRZCallRing3Disable(pVCpu);
9405	Log4Func(("Preempting: HostCpuId=%u\n", RTMpCpuId()));
9406
9407	/* Restore host-state (FPU, debug etc.) */
9408	if (!pVCpu->hmr0.s.fLeaveDone)
9409	{
9410	/*
9411	* Do -not- import the guest-state here as we might already be in the middle of importing
9412	* it, esp. bad if we're holding the PGM lock, see comment in hmR0VmxImportGuestState().
9413	*/
9414	hmR0VmxLeave(pVCpu, false /* fImportState */);
9415	pVCpu->hmr0.s.fLeaveDone = true;
9416	}
9417
9418	/* Leave HM context, takes care of local init (term). */
9419	int rc = HMR0LeaveCpu(pVCpu);
9420	AssertRC(rc);
9421
9422	/* Restore longjmp state. */
9423	VMMRZCallRing3Enable(pVCpu);
9424	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatSwitchPreempt);
9425	break;
9426	}
9427
9428	case RTTHREADCTXEVENT_IN:
9429	{
9430	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
9431	VMCPU_ASSERT_EMT(pVCpu);
9432
9433	/* Do the EMT scheduled L1D and MDS flush here if needed. */
9434	if (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_L1D_SCHED)
9435	ASMWrMsr(MSR_IA32_FLUSH_CMD, MSR_IA32_FLUSH_CMD_F_L1D);
9436	else if (pVCpu->hmr0.s.fWorldSwitcher & HM_WSF_MDS_SCHED)
9437	hmR0MdsClear();
9438
9439	/* No longjmps here, as we don't want to trigger preemption (& its hook) while resuming. */
9440	VMMRZCallRing3Disable(pVCpu);
9441	Log4Func(("Resumed: HostCpuId=%u\n", RTMpCpuId()));
9442
9443	/* Initialize the bare minimum state required for HM. This takes care of
9444	initializing VT-x if necessary (onlined CPUs, local init etc.) */
9445	int rc = hmR0EnterCpu(pVCpu);
9446	AssertRC(rc);
9447	Assert( (pVCpu->hm.s.fCtxChanged & (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE))
9448	== (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE));
9449
9450	/* Load the active VMCS as the current one. */
9451	PVMXVMCSINFO pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
9452	rc = hmR0VmxLoadVmcs(pVmcsInfo);
9453	AssertRC(rc);
9454	Log4Func(("Resumed: Loaded Vmcs. HostCpuId=%u\n", RTMpCpuId()));
9455	pVCpu->hmr0.s.fLeaveDone = false;
9456
9457	/* Restore longjmp state. */
9458	VMMRZCallRing3Enable(pVCpu);
9459	break;
9460	}
9461
9462	default:
9463	break;
9464	}
9465	}
9466
9467
9468	/**
9469	* Exports the host state into the VMCS host-state area.
9470	* Sets up the VM-exit MSR-load area.
9471	*
9472	* The CPU state will be loaded from these fields on every successful VM-exit.
9473	*
9474	* @returns VBox status code.
9475	* @param pVCpu The cross context virtual CPU structure.
9476	*
9477	* @remarks No-long-jump zone!!!
9478	*/
9479	static int hmR0VmxExportHostState(PVMCPUCC pVCpu)
9480	{
9481	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
9482
9483	int rc = VINF_SUCCESS;
9484	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_HOST_CONTEXT)
9485	{
9486	uint64_t uHostCr4 = hmR0VmxExportHostControlRegs();
9487
9488	rc = hmR0VmxExportHostSegmentRegs(pVCpu, uHostCr4);
9489	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc\n", rc), rc);
9490
9491	hmR0VmxExportHostMsrs(pVCpu);
9492
9493	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_HOST_CONTEXT;
9494	}
9495	return rc;
9496	}
9497
9498
9499	/**
9500	* Saves the host state in the VMCS host-state.
9501	*
9502	* @returns VBox status code.
9503	* @param pVCpu The cross context virtual CPU structure.
9504	*
9505	* @remarks No-long-jump zone!!!
9506	*/
9507	VMMR0DECL(int) VMXR0ExportHostState(PVMCPUCC pVCpu)
9508	{
9509	AssertPtr(pVCpu);
9510	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
9511
9512	/*
9513	* Export the host state here while entering HM context.
9514	* When thread-context hooks are used, we might get preempted and have to re-save the host
9515	* state but most of the time we won't be, so do it here before we disable interrupts.
9516	*/
9517	return hmR0VmxExportHostState(pVCpu);
9518	}
9519
9520
9521	/**
9522	* Exports the guest state into the VMCS guest-state area.
9523	*
9524	* The will typically be done before VM-entry when the guest-CPU state and the
9525	* VMCS state may potentially be out of sync.
9526	*
9527	* Sets up the VM-entry MSR-load and VM-exit MSR-store areas. Sets up the
9528	* VM-entry controls.
9529	* Sets up the appropriate VMX non-root function to execute guest code based on
9530	* the guest CPU mode.
9531	*
9532	* @returns VBox strict status code.
9533	* @retval VINF_EM_RESCHEDULE_REM if we try to emulate non-paged guest code
9534	* without unrestricted guest execution and the VMMDev is not presently
9535	* mapped (e.g. EFI32).
9536	*
9537	* @param pVCpu The cross context virtual CPU structure.
9538	* @param pVmxTransient The VMX-transient structure.
9539	*
9540	* @remarks No-long-jump zone!!!
9541	*/
9542	static VBOXSTRICTRC hmR0VmxExportGuestState(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
9543	{
9544	AssertPtr(pVCpu);
9545	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
9546	LogFlowFunc(("pVCpu=%p\n", pVCpu));
9547
9548	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExportGuestState, x);
9549
9550	/*
9551	* Determine real-on-v86 mode.
9552	* Used when the guest is in real-mode and unrestricted guest execution is not used.
9553	*/
9554	PVMXVMCSINFOSHARED pVmcsInfoShared = pVmxTransient->pVmcsInfo->pShared;
9555	if ( pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fUnrestrictedGuest
9556	\|\| !CPUMIsGuestInRealModeEx(&pVCpu->cpum.GstCtx))
9557	pVmcsInfoShared->RealMode.fRealOnV86Active = false;
9558	else
9559	{
9560	Assert(!pVmxTransient->fIsNestedGuest);
9561	pVmcsInfoShared->RealMode.fRealOnV86Active = true;
9562	}
9563
9564	/*
9565	* Any ordering dependency among the sub-functions below must be explicitly stated using comments.
9566	* Ideally, assert that the cross-dependent bits are up-to-date at the point of using it.
9567	*/
9568	int rc = hmR0VmxExportGuestEntryExitCtls(pVCpu, pVmxTransient);
9569	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc\n", rc), rc);
9570
9571	rc = hmR0VmxExportGuestCR0(pVCpu, pVmxTransient);
9572	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc\n", rc), rc);
9573
9574	VBOXSTRICTRC rcStrict = hmR0VmxExportGuestCR3AndCR4(pVCpu, pVmxTransient);
9575	if (rcStrict == VINF_SUCCESS)
9576	{ /* likely */ }
9577	else
9578	{
9579	Assert(rcStrict == VINF_EM_RESCHEDULE_REM \|\| RT_FAILURE_NP(rcStrict));
9580	return rcStrict;
9581	}
9582
9583	rc = hmR0VmxExportGuestSegRegsXdtr(pVCpu, pVmxTransient);
9584	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc\n", rc), rc);
9585
9586	rc = hmR0VmxExportGuestMsrs(pVCpu, pVmxTransient);
9587	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc\n", rc), rc);
9588
9589	hmR0VmxExportGuestApicTpr(pVCpu, pVmxTransient);
9590	hmR0VmxExportGuestXcptIntercepts(pVCpu, pVmxTransient);
9591	hmR0VmxExportGuestRip(pVCpu);
9592	hmR0VmxExportGuestRsp(pVCpu);
9593	hmR0VmxExportGuestRflags(pVCpu, pVmxTransient);
9594
9595	rc = hmR0VmxExportGuestHwvirtState(pVCpu, pVmxTransient);
9596	AssertLogRelMsgRCReturn(rc, ("rc=%Rrc\n", rc), rc);
9597
9598	/* Clear any bits that may be set but exported unconditionally or unused/reserved bits. */
9599	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~( (HM_CHANGED_GUEST_GPRS_MASK & ~HM_CHANGED_GUEST_RSP)
9600	\| HM_CHANGED_GUEST_CR2
9601	\| (HM_CHANGED_GUEST_DR_MASK & ~HM_CHANGED_GUEST_DR7)
9602	\| HM_CHANGED_GUEST_X87
9603	\| HM_CHANGED_GUEST_SSE_AVX
9604	\| HM_CHANGED_GUEST_OTHER_XSAVE
9605	\| HM_CHANGED_GUEST_XCRx
9606	\| HM_CHANGED_GUEST_KERNEL_GS_BASE /* Part of lazy or auto load-store MSRs. */
9607	\| HM_CHANGED_GUEST_SYSCALL_MSRS /* Part of lazy or auto load-store MSRs. */
9608	\| HM_CHANGED_GUEST_TSC_AUX
9609	\| HM_CHANGED_GUEST_OTHER_MSRS
9610	\| (HM_CHANGED_KEEPER_STATE_MASK & ~HM_CHANGED_VMX_MASK)));
9611
9612	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExportGuestState, x);
9613	return rc;
9614	}
9615
9616
9617	/**
9618	* Exports the state shared between the host and guest into the VMCS.
9619	*
9620	* @param pVCpu The cross context virtual CPU structure.
9621	* @param pVmxTransient The VMX-transient structure.
9622	*
9623	* @remarks No-long-jump zone!!!
9624	*/
9625	static void hmR0VmxExportSharedState(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
9626	{
9627	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
9628	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
9629
9630	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_DR_MASK)
9631	{
9632	int rc = hmR0VmxExportSharedDebugState(pVCpu, pVmxTransient);
9633	AssertRC(rc);
9634	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_GUEST_DR_MASK;
9635
9636	/* Loading shared debug bits might have changed eflags.TF bit for debugging purposes. */
9637	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_RFLAGS)
9638	hmR0VmxExportGuestRflags(pVCpu, pVmxTransient);
9639	}
9640
9641	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_VMX_GUEST_LAZY_MSRS)
9642	{
9643	hmR0VmxLazyLoadGuestMsrs(pVCpu);
9644	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_VMX_GUEST_LAZY_MSRS;
9645	}
9646
9647	AssertMsg(!(pVCpu->hm.s.fCtxChanged & HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE),
9648	("fCtxChanged=%#RX64\n", pVCpu->hm.s.fCtxChanged));
9649	}
9650
9651
9652	/**
9653	* Worker for loading the guest-state bits in the inner VT-x execution loop.
9654	*
9655	* @returns Strict VBox status code (i.e. informational status codes too).
9656	* @retval VINF_EM_RESCHEDULE_REM if we try to emulate non-paged guest code
9657	* without unrestricted guest execution and the VMMDev is not presently
9658	* mapped (e.g. EFI32).
9659	*
9660	* @param pVCpu The cross context virtual CPU structure.
9661	* @param pVmxTransient The VMX-transient structure.
9662	*
9663	* @remarks No-long-jump zone!!!
9664	*/
9665	static VBOXSTRICTRC hmR0VmxExportGuestStateOptimal(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
9666	{
9667	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
9668	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
9669
9670	#ifdef HMVMX_ALWAYS_SYNC_FULL_GUEST_STATE
9671	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
9672	#endif
9673
9674	/*
9675	* For many VM-exits only RIP/RSP/RFLAGS (and HWVIRT state when executing a nested-guest)
9676	* changes. First try to export only these without going through all other changed-flag checks.
9677	*/
9678	VBOXSTRICTRC rcStrict;
9679	uint64_t const fCtxMask = HM_CHANGED_ALL_GUEST & ~HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE;
9680	uint64_t const fMinimalMask = HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RSP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_HWVIRT;
9681	uint64_t const fCtxChanged = ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged);
9682
9683	/* If only RIP/RSP/RFLAGS/HWVIRT changed, export only those (quicker, happens more often).*/
9684	if ( (fCtxChanged & fMinimalMask)
9685	&& !(fCtxChanged & (fCtxMask & ~fMinimalMask)))
9686	{
9687	hmR0VmxExportGuestRip(pVCpu);
9688	hmR0VmxExportGuestRsp(pVCpu);
9689	hmR0VmxExportGuestRflags(pVCpu, pVmxTransient);
9690	rcStrict = hmR0VmxExportGuestHwvirtState(pVCpu, pVmxTransient);
9691	STAM_COUNTER_INC(&pVCpu->hm.s.StatExportMinimal);
9692	}
9693	/* If anything else also changed, go through the full export routine and export as required. */
9694	else if (fCtxChanged & fCtxMask)
9695	{
9696	rcStrict = hmR0VmxExportGuestState(pVCpu, pVmxTransient);
9697	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
9698	{ /* likely */}
9699	else
9700	{
9701	AssertMsg(rcStrict == VINF_EM_RESCHEDULE_REM, ("Failed to export guest state! rc=%Rrc\n",
9702	VBOXSTRICTRC_VAL(rcStrict)));
9703	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
9704	return rcStrict;
9705	}
9706	STAM_COUNTER_INC(&pVCpu->hm.s.StatExportFull);
9707	}
9708	/* Nothing changed, nothing to load here. */
9709	else
9710	rcStrict = VINF_SUCCESS;
9711
9712	#ifdef VBOX_STRICT
9713	/* All the guest state bits should be loaded except maybe the host context and/or the shared host/guest bits. */
9714	uint64_t const fCtxChangedCur = ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged);
9715	AssertMsg(!(fCtxChangedCur & fCtxMask), ("fCtxChangedCur=%#RX64\n", fCtxChangedCur));
9716	#endif
9717	return rcStrict;
9718	}
9719
9720
9721	/**
9722	* Tries to determine what part of the guest-state VT-x has deemed as invalid
9723	* and update error record fields accordingly.
9724	*
9725	* @returns VMX_IGS_* error codes.
9726	* @retval VMX_IGS_REASON_NOT_FOUND if this function could not find anything
9727	* wrong with the guest state.
9728	*
9729	* @param pVCpu The cross context virtual CPU structure.
9730	* @param pVmcsInfo The VMCS info. object.
9731	*
9732	* @remarks This function assumes our cache of the VMCS controls
9733	* are valid, i.e. hmR0VmxCheckCachedVmcsCtls() succeeded.
9734	*/
9735	static uint32_t hmR0VmxCheckGuestState(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
9736	{
9737	#define HMVMX_ERROR_BREAK(err) { uError = (err); break; }
9738	#define HMVMX_CHECK_BREAK(expr, err) do { \
9739	if (!(expr)) { uError = (err); break; } \
9740	} while (0)
9741
9742	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
9743	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
9744	uint32_t uError = VMX_IGS_ERROR;
9745	uint32_t u32IntrState = 0;
9746	bool const fUnrestrictedGuest = pVM->hmr0.s.vmx.fUnrestrictedGuest;
9747	do
9748	{
9749	int rc;
9750
9751	/*
9752	* Guest-interruptibility state.
9753	*
9754	* Read this first so that any check that fails prior to those that actually
9755	* require the guest-interruptibility state would still reflect the correct
9756	* VMCS value and avoids causing further confusion.
9757	*/
9758	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_INT_STATE, &u32IntrState);
9759	AssertRC(rc);
9760
9761	uint32_t u32Val;
9762	uint64_t u64Val;
9763
9764	/*
9765	* CR0.
9766	*/
9767	/** @todo Why do we need to OR and AND the fixed-0 and fixed-1 bits below? */
9768	uint64_t fSetCr0 = (g_HmMsrs.u.vmx.u64Cr0Fixed0 & g_HmMsrs.u.vmx.u64Cr0Fixed1);
9769	uint64_t const fZapCr0 = (g_HmMsrs.u.vmx.u64Cr0Fixed0 \| g_HmMsrs.u.vmx.u64Cr0Fixed1);
9770	/* Exceptions for unrestricted guest execution for CR0 fixed bits (PE, PG).
9771	See Intel spec. 26.3.1 "Checks on Guest Control Registers, Debug Registers and MSRs." */
9772	if (fUnrestrictedGuest)
9773	fSetCr0 &= ~(uint64_t)(X86_CR0_PE \| X86_CR0_PG);
9774
9775	uint64_t u64GuestCr0;
9776	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_CR0, &u64GuestCr0);
9777	AssertRC(rc);
9778	HMVMX_CHECK_BREAK((u64GuestCr0 & fSetCr0) == fSetCr0, VMX_IGS_CR0_FIXED1);
9779	HMVMX_CHECK_BREAK(!(u64GuestCr0 & ~fZapCr0), VMX_IGS_CR0_FIXED0);
9780	if ( !fUnrestrictedGuest
9781	&& (u64GuestCr0 & X86_CR0_PG)
9782	&& !(u64GuestCr0 & X86_CR0_PE))
9783	HMVMX_ERROR_BREAK(VMX_IGS_CR0_PG_PE_COMBO);
9784
9785	/*
9786	* CR4.
9787	*/
9788	/** @todo Why do we need to OR and AND the fixed-0 and fixed-1 bits below? */
9789	uint64_t const fSetCr4 = (g_HmMsrs.u.vmx.u64Cr4Fixed0 & g_HmMsrs.u.vmx.u64Cr4Fixed1);
9790	uint64_t const fZapCr4 = (g_HmMsrs.u.vmx.u64Cr4Fixed0 \| g_HmMsrs.u.vmx.u64Cr4Fixed1);
9791
9792	uint64_t u64GuestCr4;
9793	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_CR4, &u64GuestCr4);
9794	AssertRC(rc);
9795	HMVMX_CHECK_BREAK((u64GuestCr4 & fSetCr4) == fSetCr4, VMX_IGS_CR4_FIXED1);
9796	HMVMX_CHECK_BREAK(!(u64GuestCr4 & ~fZapCr4), VMX_IGS_CR4_FIXED0);
9797
9798	/*
9799	* IA32_DEBUGCTL MSR.
9800	*/
9801	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_DEBUGCTL_FULL, &u64Val);
9802	AssertRC(rc);
9803	if ( (pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_DEBUG)
9804	&& (u64Val & 0xfffffe3c)) /* Bits 31:9, bits 5:2 MBZ. */
9805	{
9806	HMVMX_ERROR_BREAK(VMX_IGS_DEBUGCTL_MSR_RESERVED);
9807	}
9808	uint64_t u64DebugCtlMsr = u64Val;
9809
9810	#ifdef VBOX_STRICT
9811	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY, &u32Val);
9812	AssertRC(rc);
9813	Assert(u32Val == pVmcsInfo->u32EntryCtls);
9814	#endif
9815	bool const fLongModeGuest = RT_BOOL(pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_IA32E_MODE_GUEST);
9816
9817	/*
9818	* RIP and RFLAGS.
9819	*/
9820	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_RIP, &u64Val);
9821	AssertRC(rc);
9822	/* pCtx->rip can be different than the one in the VMCS (e.g. run guest code and VM-exits that don't update it). */
9823	if ( !fLongModeGuest
9824	\|\| !pCtx->cs.Attr.n.u1Long)
9825	HMVMX_CHECK_BREAK(!(u64Val & UINT64_C(0xffffffff00000000)), VMX_IGS_LONGMODE_RIP_INVALID);
9826	/** @todo If the processor supports N < 64 linear-address bits, bits 63:N
9827	* must be identical if the "IA-32e mode guest" VM-entry
9828	* control is 1 and CS.L is 1. No check applies if the
9829	* CPU supports 64 linear-address bits. */
9830
9831	/* Flags in pCtx can be different (real-on-v86 for instance). We are only concerned about the VMCS contents here. */
9832	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_RFLAGS, &u64Val);
9833	AssertRC(rc);
9834	HMVMX_CHECK_BREAK(!(u64Val & UINT64_C(0xffffffffffc08028)), /* Bit 63:22, Bit 15, 5, 3 MBZ. */
9835	VMX_IGS_RFLAGS_RESERVED);
9836	HMVMX_CHECK_BREAK((u64Val & X86_EFL_RA1_MASK), VMX_IGS_RFLAGS_RESERVED1); /* Bit 1 MB1. */
9837	uint32_t const u32Eflags = u64Val;
9838
9839	if ( fLongModeGuest
9840	\|\| ( fUnrestrictedGuest
9841	&& !(u64GuestCr0 & X86_CR0_PE)))
9842	{
9843	HMVMX_CHECK_BREAK(!(u32Eflags & X86_EFL_VM), VMX_IGS_RFLAGS_VM_INVALID);
9844	}
9845
9846	uint32_t u32EntryInfo;
9847	rc = VMXReadVmcs32(VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO, &u32EntryInfo);
9848	AssertRC(rc);
9849	if (VMX_ENTRY_INT_INFO_IS_EXT_INT(u32EntryInfo))
9850	HMVMX_CHECK_BREAK(u32Eflags & X86_EFL_IF, VMX_IGS_RFLAGS_IF_INVALID);
9851
9852	/*
9853	* 64-bit checks.
9854	*/
9855	if (fLongModeGuest)
9856	{
9857	HMVMX_CHECK_BREAK(u64GuestCr0 & X86_CR0_PG, VMX_IGS_CR0_PG_LONGMODE);
9858	HMVMX_CHECK_BREAK(u64GuestCr4 & X86_CR4_PAE, VMX_IGS_CR4_PAE_LONGMODE);
9859	}
9860
9861	if ( !fLongModeGuest
9862	&& (u64GuestCr4 & X86_CR4_PCIDE))
9863	HMVMX_ERROR_BREAK(VMX_IGS_CR4_PCIDE);
9864
9865	/** @todo CR3 field must be such that bits 63:52 and bits in the range
9866	* 51:32 beyond the processor's physical-address width are 0. */
9867
9868	if ( (pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_DEBUG)
9869	&& (pCtx->dr[7] & X86_DR7_MBZ_MASK))
9870	HMVMX_ERROR_BREAK(VMX_IGS_DR7_RESERVED);
9871
9872	rc = VMXReadVmcsNw(VMX_VMCS_HOST_SYSENTER_ESP, &u64Val);
9873	AssertRC(rc);
9874	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(u64Val), VMX_IGS_SYSENTER_ESP_NOT_CANONICAL);
9875
9876	rc = VMXReadVmcsNw(VMX_VMCS_HOST_SYSENTER_EIP, &u64Val);
9877	AssertRC(rc);
9878	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(u64Val), VMX_IGS_SYSENTER_EIP_NOT_CANONICAL);
9879
9880	/*
9881	* PERF_GLOBAL MSR.
9882	*/
9883	if (pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_PERF_MSR)
9884	{
9885	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PERF_GLOBAL_CTRL_FULL, &u64Val);
9886	AssertRC(rc);
9887	HMVMX_CHECK_BREAK(!(u64Val & UINT64_C(0xfffffff8fffffffc)),
9888	VMX_IGS_PERF_GLOBAL_MSR_RESERVED); /* Bits 63:35, bits 31:2 MBZ. */
9889	}
9890
9891	/*
9892	* PAT MSR.
9893	*/
9894	if (pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_PAT_MSR)
9895	{
9896	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PAT_FULL, &u64Val);
9897	AssertRC(rc);
9898	HMVMX_CHECK_BREAK(!(u64Val & UINT64_C(0x707070707070707)), VMX_IGS_PAT_MSR_RESERVED);
9899	for (unsigned i = 0; i < 8; i++)
9900	{
9901	uint8_t u8Val = (u64Val & 0xff);
9902	if ( u8Val != 0 /* UC */
9903	&& u8Val != 1 /* WC */
9904	&& u8Val != 4 /* WT */
9905	&& u8Val != 5 /* WP */
9906	&& u8Val != 6 /* WB */
9907	&& u8Val != 7 /* UC- */)
9908	HMVMX_ERROR_BREAK(VMX_IGS_PAT_MSR_INVALID);
9909	u64Val >>= 8;
9910	}
9911	}
9912
9913	/*
9914	* EFER MSR.
9915	*/
9916	if (pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_LOAD_EFER_MSR)
9917	{
9918	Assert(g_fHmVmxSupportsVmcsEfer);
9919	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_EFER_FULL, &u64Val);
9920	AssertRC(rc);
9921	HMVMX_CHECK_BREAK(!(u64Val & UINT64_C(0xfffffffffffff2fe)),
9922	VMX_IGS_EFER_MSR_RESERVED); /* Bits 63:12, bit 9, bits 7:1 MBZ. */
9923	HMVMX_CHECK_BREAK(RT_BOOL(u64Val & MSR_K6_EFER_LMA) == RT_BOOL( pVmcsInfo->u32EntryCtls
9924	& VMX_ENTRY_CTLS_IA32E_MODE_GUEST),
9925	VMX_IGS_EFER_LMA_GUEST_MODE_MISMATCH);
9926	/** @todo r=ramshankar: Unrestricted check here is probably wrong, see
9927	* iemVmxVmentryCheckGuestState(). */
9928	HMVMX_CHECK_BREAK( fUnrestrictedGuest
9929	\|\| !(u64GuestCr0 & X86_CR0_PG)
9930	\|\| RT_BOOL(u64Val & MSR_K6_EFER_LMA) == RT_BOOL(u64Val & MSR_K6_EFER_LME),
9931	VMX_IGS_EFER_LMA_LME_MISMATCH);
9932	}
9933
9934	/*
9935	* Segment registers.
9936	*/
9937	HMVMX_CHECK_BREAK( (pCtx->ldtr.Attr.u & X86DESCATTR_UNUSABLE)
9938	\|\| !(pCtx->ldtr.Sel & X86_SEL_LDT), VMX_IGS_LDTR_TI_INVALID);
9939	if (!(u32Eflags & X86_EFL_VM))
9940	{
9941	/* CS */
9942	HMVMX_CHECK_BREAK(pCtx->cs.Attr.n.u1Present, VMX_IGS_CS_ATTR_P_INVALID);
9943	HMVMX_CHECK_BREAK(!(pCtx->cs.Attr.u & 0xf00), VMX_IGS_CS_ATTR_RESERVED);
9944	HMVMX_CHECK_BREAK(!(pCtx->cs.Attr.u & 0xfffe0000), VMX_IGS_CS_ATTR_RESERVED);
9945	HMVMX_CHECK_BREAK( (pCtx->cs.u32Limit & 0xfff) == 0xfff
9946	\|\| !(pCtx->cs.Attr.n.u1Granularity), VMX_IGS_CS_ATTR_G_INVALID);
9947	HMVMX_CHECK_BREAK( !(pCtx->cs.u32Limit & 0xfff00000)
9948	\|\| (pCtx->cs.Attr.n.u1Granularity), VMX_IGS_CS_ATTR_G_INVALID);
9949	/* CS cannot be loaded with NULL in protected mode. */
9950	HMVMX_CHECK_BREAK(pCtx->cs.Attr.u && !(pCtx->cs.Attr.u & X86DESCATTR_UNUSABLE), VMX_IGS_CS_ATTR_UNUSABLE);
9951	HMVMX_CHECK_BREAK(pCtx->cs.Attr.n.u1DescType, VMX_IGS_CS_ATTR_S_INVALID);
9952	if (pCtx->cs.Attr.n.u4Type == 9 \|\| pCtx->cs.Attr.n.u4Type == 11)
9953	HMVMX_CHECK_BREAK(pCtx->cs.Attr.n.u2Dpl == pCtx->ss.Attr.n.u2Dpl, VMX_IGS_CS_SS_ATTR_DPL_UNEQUAL);
9954	else if (pCtx->cs.Attr.n.u4Type == 13 \|\| pCtx->cs.Attr.n.u4Type == 15)
9955	HMVMX_CHECK_BREAK(pCtx->cs.Attr.n.u2Dpl <= pCtx->ss.Attr.n.u2Dpl, VMX_IGS_CS_SS_ATTR_DPL_MISMATCH);
9956	else if (fUnrestrictedGuest && pCtx->cs.Attr.n.u4Type == 3)
9957	HMVMX_CHECK_BREAK(pCtx->cs.Attr.n.u2Dpl == 0, VMX_IGS_CS_ATTR_DPL_INVALID);
9958	else
9959	HMVMX_ERROR_BREAK(VMX_IGS_CS_ATTR_TYPE_INVALID);
9960
9961	/* SS */
9962	HMVMX_CHECK_BREAK( fUnrestrictedGuest
9963	\|\| (pCtx->ss.Sel & X86_SEL_RPL) == (pCtx->cs.Sel & X86_SEL_RPL), VMX_IGS_SS_CS_RPL_UNEQUAL);
9964	HMVMX_CHECK_BREAK(pCtx->ss.Attr.n.u2Dpl == (pCtx->ss.Sel & X86_SEL_RPL), VMX_IGS_SS_ATTR_DPL_RPL_UNEQUAL);
9965	if ( !(pCtx->cr0 & X86_CR0_PE)
9966	\|\| pCtx->cs.Attr.n.u4Type == 3)
9967	HMVMX_CHECK_BREAK(!pCtx->ss.Attr.n.u2Dpl, VMX_IGS_SS_ATTR_DPL_INVALID);
9968
9969	if (!(pCtx->ss.Attr.u & X86DESCATTR_UNUSABLE))
9970	{
9971	HMVMX_CHECK_BREAK(pCtx->ss.Attr.n.u4Type == 3 \|\| pCtx->ss.Attr.n.u4Type == 7, VMX_IGS_SS_ATTR_TYPE_INVALID);
9972	HMVMX_CHECK_BREAK(pCtx->ss.Attr.n.u1Present, VMX_IGS_SS_ATTR_P_INVALID);
9973	HMVMX_CHECK_BREAK(!(pCtx->ss.Attr.u & 0xf00), VMX_IGS_SS_ATTR_RESERVED);
9974	HMVMX_CHECK_BREAK(!(pCtx->ss.Attr.u & 0xfffe0000), VMX_IGS_SS_ATTR_RESERVED);
9975	HMVMX_CHECK_BREAK( (pCtx->ss.u32Limit & 0xfff) == 0xfff
9976	\|\| !(pCtx->ss.Attr.n.u1Granularity), VMX_IGS_SS_ATTR_G_INVALID);
9977	HMVMX_CHECK_BREAK( !(pCtx->ss.u32Limit & 0xfff00000)
9978	\|\| (pCtx->ss.Attr.n.u1Granularity), VMX_IGS_SS_ATTR_G_INVALID);
9979	}
9980
9981	/* DS, ES, FS, GS - only check for usable selectors, see hmR0VmxExportGuestSReg(). */
9982	if (!(pCtx->ds.Attr.u & X86DESCATTR_UNUSABLE))
9983	{
9984	HMVMX_CHECK_BREAK(pCtx->ds.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED, VMX_IGS_DS_ATTR_A_INVALID);
9985	HMVMX_CHECK_BREAK(pCtx->ds.Attr.n.u1Present, VMX_IGS_DS_ATTR_P_INVALID);
9986	HMVMX_CHECK_BREAK( fUnrestrictedGuest
9987	\|\| pCtx->ds.Attr.n.u4Type > 11
9988	\|\| pCtx->ds.Attr.n.u2Dpl >= (pCtx->ds.Sel & X86_SEL_RPL), VMX_IGS_DS_ATTR_DPL_RPL_UNEQUAL);
9989	HMVMX_CHECK_BREAK(!(pCtx->ds.Attr.u & 0xf00), VMX_IGS_DS_ATTR_RESERVED);
9990	HMVMX_CHECK_BREAK(!(pCtx->ds.Attr.u & 0xfffe0000), VMX_IGS_DS_ATTR_RESERVED);
9991	HMVMX_CHECK_BREAK( (pCtx->ds.u32Limit & 0xfff) == 0xfff
9992	\|\| !(pCtx->ds.Attr.n.u1Granularity), VMX_IGS_DS_ATTR_G_INVALID);
9993	HMVMX_CHECK_BREAK( !(pCtx->ds.u32Limit & 0xfff00000)
9994	\|\| (pCtx->ds.Attr.n.u1Granularity), VMX_IGS_DS_ATTR_G_INVALID);
9995	HMVMX_CHECK_BREAK( !(pCtx->ds.Attr.n.u4Type & X86_SEL_TYPE_CODE)
9996	\|\| (pCtx->ds.Attr.n.u4Type & X86_SEL_TYPE_READ), VMX_IGS_DS_ATTR_TYPE_INVALID);
9997	}
9998	if (!(pCtx->es.Attr.u & X86DESCATTR_UNUSABLE))
9999	{
10000	HMVMX_CHECK_BREAK(pCtx->es.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED, VMX_IGS_ES_ATTR_A_INVALID);
10001	HMVMX_CHECK_BREAK(pCtx->es.Attr.n.u1Present, VMX_IGS_ES_ATTR_P_INVALID);
10002	HMVMX_CHECK_BREAK( fUnrestrictedGuest
10003	\|\| pCtx->es.Attr.n.u4Type > 11
10004	\|\| pCtx->es.Attr.n.u2Dpl >= (pCtx->es.Sel & X86_SEL_RPL), VMX_IGS_DS_ATTR_DPL_RPL_UNEQUAL);
10005	HMVMX_CHECK_BREAK(!(pCtx->es.Attr.u & 0xf00), VMX_IGS_ES_ATTR_RESERVED);
10006	HMVMX_CHECK_BREAK(!(pCtx->es.Attr.u & 0xfffe0000), VMX_IGS_ES_ATTR_RESERVED);
10007	HMVMX_CHECK_BREAK( (pCtx->es.u32Limit & 0xfff) == 0xfff
10008	\|\| !(pCtx->es.Attr.n.u1Granularity), VMX_IGS_ES_ATTR_G_INVALID);
10009	HMVMX_CHECK_BREAK( !(pCtx->es.u32Limit & 0xfff00000)
10010	\|\| (pCtx->es.Attr.n.u1Granularity), VMX_IGS_ES_ATTR_G_INVALID);
10011	HMVMX_CHECK_BREAK( !(pCtx->es.Attr.n.u4Type & X86_SEL_TYPE_CODE)
10012	\|\| (pCtx->es.Attr.n.u4Type & X86_SEL_TYPE_READ), VMX_IGS_ES_ATTR_TYPE_INVALID);
10013	}
10014	if (!(pCtx->fs.Attr.u & X86DESCATTR_UNUSABLE))
10015	{
10016	HMVMX_CHECK_BREAK(pCtx->fs.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED, VMX_IGS_FS_ATTR_A_INVALID);
10017	HMVMX_CHECK_BREAK(pCtx->fs.Attr.n.u1Present, VMX_IGS_FS_ATTR_P_INVALID);
10018	HMVMX_CHECK_BREAK( fUnrestrictedGuest
10019	\|\| pCtx->fs.Attr.n.u4Type > 11
10020	\|\| pCtx->fs.Attr.n.u2Dpl >= (pCtx->fs.Sel & X86_SEL_RPL), VMX_IGS_FS_ATTR_DPL_RPL_UNEQUAL);
10021	HMVMX_CHECK_BREAK(!(pCtx->fs.Attr.u & 0xf00), VMX_IGS_FS_ATTR_RESERVED);
10022	HMVMX_CHECK_BREAK(!(pCtx->fs.Attr.u & 0xfffe0000), VMX_IGS_FS_ATTR_RESERVED);
10023	HMVMX_CHECK_BREAK( (pCtx->fs.u32Limit & 0xfff) == 0xfff
10024	\|\| !(pCtx->fs.Attr.n.u1Granularity), VMX_IGS_FS_ATTR_G_INVALID);
10025	HMVMX_CHECK_BREAK( !(pCtx->fs.u32Limit & 0xfff00000)
10026	\|\| (pCtx->fs.Attr.n.u1Granularity), VMX_IGS_FS_ATTR_G_INVALID);
10027	HMVMX_CHECK_BREAK( !(pCtx->fs.Attr.n.u4Type & X86_SEL_TYPE_CODE)
10028	\|\| (pCtx->fs.Attr.n.u4Type & X86_SEL_TYPE_READ), VMX_IGS_FS_ATTR_TYPE_INVALID);
10029	}
10030	if (!(pCtx->gs.Attr.u & X86DESCATTR_UNUSABLE))
10031	{
10032	HMVMX_CHECK_BREAK(pCtx->gs.Attr.n.u4Type & X86_SEL_TYPE_ACCESSED, VMX_IGS_GS_ATTR_A_INVALID);
10033	HMVMX_CHECK_BREAK(pCtx->gs.Attr.n.u1Present, VMX_IGS_GS_ATTR_P_INVALID);
10034	HMVMX_CHECK_BREAK( fUnrestrictedGuest
10035	\|\| pCtx->gs.Attr.n.u4Type > 11
10036	\|\| pCtx->gs.Attr.n.u2Dpl >= (pCtx->gs.Sel & X86_SEL_RPL), VMX_IGS_GS_ATTR_DPL_RPL_UNEQUAL);
10037	HMVMX_CHECK_BREAK(!(pCtx->gs.Attr.u & 0xf00), VMX_IGS_GS_ATTR_RESERVED);
10038	HMVMX_CHECK_BREAK(!(pCtx->gs.Attr.u & 0xfffe0000), VMX_IGS_GS_ATTR_RESERVED);
10039	HMVMX_CHECK_BREAK( (pCtx->gs.u32Limit & 0xfff) == 0xfff
10040	\|\| !(pCtx->gs.Attr.n.u1Granularity), VMX_IGS_GS_ATTR_G_INVALID);
10041	HMVMX_CHECK_BREAK( !(pCtx->gs.u32Limit & 0xfff00000)
10042	\|\| (pCtx->gs.Attr.n.u1Granularity), VMX_IGS_GS_ATTR_G_INVALID);
10043	HMVMX_CHECK_BREAK( !(pCtx->gs.Attr.n.u4Type & X86_SEL_TYPE_CODE)
10044	\|\| (pCtx->gs.Attr.n.u4Type & X86_SEL_TYPE_READ), VMX_IGS_GS_ATTR_TYPE_INVALID);
10045	}
10046	/* 64-bit capable CPUs. */
10047	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(pCtx->fs.u64Base), VMX_IGS_FS_BASE_NOT_CANONICAL);
10048	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(pCtx->gs.u64Base), VMX_IGS_GS_BASE_NOT_CANONICAL);
10049	HMVMX_CHECK_BREAK( (pCtx->ldtr.Attr.u & X86DESCATTR_UNUSABLE)
10050	\|\| X86_IS_CANONICAL(pCtx->ldtr.u64Base), VMX_IGS_LDTR_BASE_NOT_CANONICAL);
10051	HMVMX_CHECK_BREAK(!RT_HI_U32(pCtx->cs.u64Base), VMX_IGS_LONGMODE_CS_BASE_INVALID);
10052	HMVMX_CHECK_BREAK((pCtx->ss.Attr.u & X86DESCATTR_UNUSABLE) \|\| !RT_HI_U32(pCtx->ss.u64Base),
10053	VMX_IGS_LONGMODE_SS_BASE_INVALID);
10054	HMVMX_CHECK_BREAK((pCtx->ds.Attr.u & X86DESCATTR_UNUSABLE) \|\| !RT_HI_U32(pCtx->ds.u64Base),
10055	VMX_IGS_LONGMODE_DS_BASE_INVALID);
10056	HMVMX_CHECK_BREAK((pCtx->es.Attr.u & X86DESCATTR_UNUSABLE) \|\| !RT_HI_U32(pCtx->es.u64Base),
10057	VMX_IGS_LONGMODE_ES_BASE_INVALID);
10058	}
10059	else
10060	{
10061	/* V86 mode checks. */
10062	uint32_t u32CSAttr, u32SSAttr, u32DSAttr, u32ESAttr, u32FSAttr, u32GSAttr;
10063	if (pVmcsInfo->pShared->RealMode.fRealOnV86Active)
10064	{
10065	u32CSAttr = 0xf3; u32SSAttr = 0xf3;
10066	u32DSAttr = 0xf3; u32ESAttr = 0xf3;
10067	u32FSAttr = 0xf3; u32GSAttr = 0xf3;
10068	}
10069	else
10070	{
10071	u32CSAttr = pCtx->cs.Attr.u; u32SSAttr = pCtx->ss.Attr.u;
10072	u32DSAttr = pCtx->ds.Attr.u; u32ESAttr = pCtx->es.Attr.u;
10073	u32FSAttr = pCtx->fs.Attr.u; u32GSAttr = pCtx->gs.Attr.u;
10074	}
10075
10076	/* CS */
10077	HMVMX_CHECK_BREAK((pCtx->cs.u64Base == (uint64_t)pCtx->cs.Sel << 4), VMX_IGS_V86_CS_BASE_INVALID);
10078	HMVMX_CHECK_BREAK(pCtx->cs.u32Limit == 0xffff, VMX_IGS_V86_CS_LIMIT_INVALID);
10079	HMVMX_CHECK_BREAK(u32CSAttr == 0xf3, VMX_IGS_V86_CS_ATTR_INVALID);
10080	/* SS */
10081	HMVMX_CHECK_BREAK((pCtx->ss.u64Base == (uint64_t)pCtx->ss.Sel << 4), VMX_IGS_V86_SS_BASE_INVALID);
10082	HMVMX_CHECK_BREAK(pCtx->ss.u32Limit == 0xffff, VMX_IGS_V86_SS_LIMIT_INVALID);
10083	HMVMX_CHECK_BREAK(u32SSAttr == 0xf3, VMX_IGS_V86_SS_ATTR_INVALID);
10084	/* DS */
10085	HMVMX_CHECK_BREAK((pCtx->ds.u64Base == (uint64_t)pCtx->ds.Sel << 4), VMX_IGS_V86_DS_BASE_INVALID);
10086	HMVMX_CHECK_BREAK(pCtx->ds.u32Limit == 0xffff, VMX_IGS_V86_DS_LIMIT_INVALID);
10087	HMVMX_CHECK_BREAK(u32DSAttr == 0xf3, VMX_IGS_V86_DS_ATTR_INVALID);
10088	/* ES */
10089	HMVMX_CHECK_BREAK((pCtx->es.u64Base == (uint64_t)pCtx->es.Sel << 4), VMX_IGS_V86_ES_BASE_INVALID);
10090	HMVMX_CHECK_BREAK(pCtx->es.u32Limit == 0xffff, VMX_IGS_V86_ES_LIMIT_INVALID);
10091	HMVMX_CHECK_BREAK(u32ESAttr == 0xf3, VMX_IGS_V86_ES_ATTR_INVALID);
10092	/* FS */
10093	HMVMX_CHECK_BREAK((pCtx->fs.u64Base == (uint64_t)pCtx->fs.Sel << 4), VMX_IGS_V86_FS_BASE_INVALID);
10094	HMVMX_CHECK_BREAK(pCtx->fs.u32Limit == 0xffff, VMX_IGS_V86_FS_LIMIT_INVALID);
10095	HMVMX_CHECK_BREAK(u32FSAttr == 0xf3, VMX_IGS_V86_FS_ATTR_INVALID);
10096	/* GS */
10097	HMVMX_CHECK_BREAK((pCtx->gs.u64Base == (uint64_t)pCtx->gs.Sel << 4), VMX_IGS_V86_GS_BASE_INVALID);
10098	HMVMX_CHECK_BREAK(pCtx->gs.u32Limit == 0xffff, VMX_IGS_V86_GS_LIMIT_INVALID);
10099	HMVMX_CHECK_BREAK(u32GSAttr == 0xf3, VMX_IGS_V86_GS_ATTR_INVALID);
10100	/* 64-bit capable CPUs. */
10101	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(pCtx->fs.u64Base), VMX_IGS_FS_BASE_NOT_CANONICAL);
10102	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(pCtx->gs.u64Base), VMX_IGS_GS_BASE_NOT_CANONICAL);
10103	HMVMX_CHECK_BREAK( (pCtx->ldtr.Attr.u & X86DESCATTR_UNUSABLE)
10104	\|\| X86_IS_CANONICAL(pCtx->ldtr.u64Base), VMX_IGS_LDTR_BASE_NOT_CANONICAL);
10105	HMVMX_CHECK_BREAK(!RT_HI_U32(pCtx->cs.u64Base), VMX_IGS_LONGMODE_CS_BASE_INVALID);
10106	HMVMX_CHECK_BREAK((pCtx->ss.Attr.u & X86DESCATTR_UNUSABLE) \|\| !RT_HI_U32(pCtx->ss.u64Base),
10107	VMX_IGS_LONGMODE_SS_BASE_INVALID);
10108	HMVMX_CHECK_BREAK((pCtx->ds.Attr.u & X86DESCATTR_UNUSABLE) \|\| !RT_HI_U32(pCtx->ds.u64Base),
10109	VMX_IGS_LONGMODE_DS_BASE_INVALID);
10110	HMVMX_CHECK_BREAK((pCtx->es.Attr.u & X86DESCATTR_UNUSABLE) \|\| !RT_HI_U32(pCtx->es.u64Base),
10111	VMX_IGS_LONGMODE_ES_BASE_INVALID);
10112	}
10113
10114	/*
10115	* TR.
10116	*/
10117	HMVMX_CHECK_BREAK(!(pCtx->tr.Sel & X86_SEL_LDT), VMX_IGS_TR_TI_INVALID);
10118	/* 64-bit capable CPUs. */
10119	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(pCtx->tr.u64Base), VMX_IGS_TR_BASE_NOT_CANONICAL);
10120	if (fLongModeGuest)
10121	HMVMX_CHECK_BREAK(pCtx->tr.Attr.n.u4Type == 11, /* 64-bit busy TSS. */
10122	VMX_IGS_LONGMODE_TR_ATTR_TYPE_INVALID);
10123	else
10124	HMVMX_CHECK_BREAK( pCtx->tr.Attr.n.u4Type == 3 /* 16-bit busy TSS. */
10125	\|\| pCtx->tr.Attr.n.u4Type == 11, /* 32-bit busy TSS.*/
10126	VMX_IGS_TR_ATTR_TYPE_INVALID);
10127	HMVMX_CHECK_BREAK(!pCtx->tr.Attr.n.u1DescType, VMX_IGS_TR_ATTR_S_INVALID);
10128	HMVMX_CHECK_BREAK(pCtx->tr.Attr.n.u1Present, VMX_IGS_TR_ATTR_P_INVALID);
10129	HMVMX_CHECK_BREAK(!(pCtx->tr.Attr.u & 0xf00), VMX_IGS_TR_ATTR_RESERVED); /* Bits 11:8 MBZ. */
10130	HMVMX_CHECK_BREAK( (pCtx->tr.u32Limit & 0xfff) == 0xfff
10131	\|\| !(pCtx->tr.Attr.n.u1Granularity), VMX_IGS_TR_ATTR_G_INVALID);
10132	HMVMX_CHECK_BREAK( !(pCtx->tr.u32Limit & 0xfff00000)
10133	\|\| (pCtx->tr.Attr.n.u1Granularity), VMX_IGS_TR_ATTR_G_INVALID);
10134	HMVMX_CHECK_BREAK(!(pCtx->tr.Attr.u & X86DESCATTR_UNUSABLE), VMX_IGS_TR_ATTR_UNUSABLE);
10135
10136	/*
10137	* GDTR and IDTR (64-bit capable checks).
10138	*/
10139	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_GDTR_BASE, &u64Val);
10140	AssertRC(rc);
10141	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(u64Val), VMX_IGS_GDTR_BASE_NOT_CANONICAL);
10142
10143	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_IDTR_BASE, &u64Val);
10144	AssertRC(rc);
10145	HMVMX_CHECK_BREAK(X86_IS_CANONICAL(u64Val), VMX_IGS_IDTR_BASE_NOT_CANONICAL);
10146
10147	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_GDTR_LIMIT, &u32Val);
10148	AssertRC(rc);
10149	HMVMX_CHECK_BREAK(!(u32Val & 0xffff0000), VMX_IGS_GDTR_LIMIT_INVALID); /* Bits 31:16 MBZ. */
10150
10151	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_IDTR_LIMIT, &u32Val);
10152	AssertRC(rc);
10153	HMVMX_CHECK_BREAK(!(u32Val & 0xffff0000), VMX_IGS_IDTR_LIMIT_INVALID); /* Bits 31:16 MBZ. */
10154
10155	/*
10156	* Guest Non-Register State.
10157	*/
10158	/* Activity State. */
10159	uint32_t u32ActivityState;
10160	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_ACTIVITY_STATE, &u32ActivityState);
10161	AssertRC(rc);
10162	HMVMX_CHECK_BREAK( !u32ActivityState
10163	\|\| (u32ActivityState & RT_BF_GET(g_HmMsrs.u.vmx.u64Misc, VMX_BF_MISC_ACTIVITY_STATES)),
10164	VMX_IGS_ACTIVITY_STATE_INVALID);
10165	HMVMX_CHECK_BREAK( !(pCtx->ss.Attr.n.u2Dpl)
10166	\|\| u32ActivityState != VMX_VMCS_GUEST_ACTIVITY_HLT, VMX_IGS_ACTIVITY_STATE_HLT_INVALID);
10167
10168	if ( u32IntrState == VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS
10169	\|\| u32IntrState == VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)
10170	HMVMX_CHECK_BREAK(u32ActivityState == VMX_VMCS_GUEST_ACTIVITY_ACTIVE, VMX_IGS_ACTIVITY_STATE_ACTIVE_INVALID);
10171
10172	/** @todo Activity state and injecting interrupts. Left as a todo since we
10173	* currently don't use activity states but ACTIVE. */
10174
10175	HMVMX_CHECK_BREAK( !(pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_ENTRY_TO_SMM)
10176	\|\| u32ActivityState != VMX_VMCS_GUEST_ACTIVITY_SIPI_WAIT, VMX_IGS_ACTIVITY_STATE_SIPI_WAIT_INVALID);
10177
10178	/* Guest interruptibility-state. */
10179	HMVMX_CHECK_BREAK(!(u32IntrState & 0xffffffe0), VMX_IGS_INTERRUPTIBILITY_STATE_RESERVED);
10180	HMVMX_CHECK_BREAK((u32IntrState & (VMX_VMCS_GUEST_INT_STATE_BLOCK_STI \| VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS))
10181	!= (VMX_VMCS_GUEST_INT_STATE_BLOCK_STI \| VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS),
10182	VMX_IGS_INTERRUPTIBILITY_STATE_STI_MOVSS_INVALID);
10183	HMVMX_CHECK_BREAK( (u32Eflags & X86_EFL_IF)
10184	\|\| !(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI),
10185	VMX_IGS_INTERRUPTIBILITY_STATE_STI_EFL_INVALID);
10186	if (VMX_ENTRY_INT_INFO_IS_EXT_INT(u32EntryInfo))
10187	{
10188	HMVMX_CHECK_BREAK( !(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)
10189	&& !(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS),
10190	VMX_IGS_INTERRUPTIBILITY_STATE_EXT_INT_INVALID);
10191	}
10192	else if (VMX_ENTRY_INT_INFO_IS_XCPT_NMI(u32EntryInfo))
10193	{
10194	HMVMX_CHECK_BREAK(!(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS),
10195	VMX_IGS_INTERRUPTIBILITY_STATE_MOVSS_INVALID);
10196	HMVMX_CHECK_BREAK(!(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI),
10197	VMX_IGS_INTERRUPTIBILITY_STATE_STI_INVALID);
10198	}
10199	/** @todo Assumes the processor is not in SMM. */
10200	HMVMX_CHECK_BREAK(!(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_SMI),
10201	VMX_IGS_INTERRUPTIBILITY_STATE_SMI_INVALID);
10202	HMVMX_CHECK_BREAK( !(pVmcsInfo->u32EntryCtls & VMX_ENTRY_CTLS_ENTRY_TO_SMM)
10203	\|\| (u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_SMI),
10204	VMX_IGS_INTERRUPTIBILITY_STATE_SMI_SMM_INVALID);
10205	if ( (pVmcsInfo->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
10206	&& VMX_ENTRY_INT_INFO_IS_XCPT_NMI(u32EntryInfo))
10207	HMVMX_CHECK_BREAK(!(u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_NMI), VMX_IGS_INTERRUPTIBILITY_STATE_NMI_INVALID);
10208
10209	/* Pending debug exceptions. */
10210	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_PENDING_DEBUG_XCPTS, &u64Val);
10211	AssertRC(rc);
10212	/* Bits 63:15, Bit 13, Bits 11:4 MBZ. */
10213	HMVMX_CHECK_BREAK(!(u64Val & UINT64_C(0xffffffffffffaff0)), VMX_IGS_LONGMODE_PENDING_DEBUG_RESERVED);
10214	u32Val = u64Val; /* For pending debug exceptions checks below. */
10215
10216	if ( (u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)
10217	\|\| (u32IntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS)
10218	\|\| u32ActivityState == VMX_VMCS_GUEST_ACTIVITY_HLT)
10219	{
10220	if ( (u32Eflags & X86_EFL_TF)
10221	&& !(u64DebugCtlMsr & RT_BIT_64(1))) /* Bit 1 is IA32_DEBUGCTL.BTF. */
10222	{
10223	/* Bit 14 is PendingDebug.BS. */
10224	HMVMX_CHECK_BREAK(u32Val & RT_BIT(14), VMX_IGS_PENDING_DEBUG_XCPT_BS_NOT_SET);
10225	}
10226	if ( !(u32Eflags & X86_EFL_TF)
10227	\|\| (u64DebugCtlMsr & RT_BIT_64(1))) /* Bit 1 is IA32_DEBUGCTL.BTF. */
10228	{
10229	/* Bit 14 is PendingDebug.BS. */
10230	HMVMX_CHECK_BREAK(!(u32Val & RT_BIT(14)), VMX_IGS_PENDING_DEBUG_XCPT_BS_NOT_CLEAR);
10231	}
10232	}
10233
10234	/* VMCS link pointer. */
10235	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_VMCS_LINK_PTR_FULL, &u64Val);
10236	AssertRC(rc);
10237	if (u64Val != UINT64_C(0xffffffffffffffff))
10238	{
10239	HMVMX_CHECK_BREAK(!(u64Val & 0xfff), VMX_IGS_VMCS_LINK_PTR_RESERVED);
10240	/** @todo Bits beyond the processor's physical-address width MBZ. */
10241	/** @todo SMM checks. */
10242	Assert(pVmcsInfo->HCPhysShadowVmcs == u64Val);
10243	Assert(pVmcsInfo->pvShadowVmcs);
10244	VMXVMCSREVID VmcsRevId;
10245	VmcsRevId.u = (uint32_t )pVmcsInfo->pvShadowVmcs;
10246	HMVMX_CHECK_BREAK(VmcsRevId.n.u31RevisionId == RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_ID),
10247	VMX_IGS_VMCS_LINK_PTR_SHADOW_VMCS_ID_INVALID);
10248	HMVMX_CHECK_BREAK(VmcsRevId.n.fIsShadowVmcs == (uint32_t)!!(pVmcsInfo->u32ProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING),
10249	VMX_IGS_VMCS_LINK_PTR_NOT_SHADOW);
10250	}
10251
10252	/** @todo Checks on Guest Page-Directory-Pointer-Table Entries when guest is
10253	* not using nested paging? */
10254	if ( pVM->hmr0.s.fNestedPaging
10255	&& !fLongModeGuest
10256	&& CPUMIsGuestInPAEModeEx(pCtx))
10257	{
10258	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE0_FULL, &u64Val);
10259	AssertRC(rc);
10260	HMVMX_CHECK_BREAK(!(u64Val & X86_PDPE_PAE_MBZ_MASK), VMX_IGS_PAE_PDPTE_RESERVED);
10261
10262	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE1_FULL, &u64Val);
10263	AssertRC(rc);
10264	HMVMX_CHECK_BREAK(!(u64Val & X86_PDPE_PAE_MBZ_MASK), VMX_IGS_PAE_PDPTE_RESERVED);
10265
10266	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE2_FULL, &u64Val);
10267	AssertRC(rc);
10268	HMVMX_CHECK_BREAK(!(u64Val & X86_PDPE_PAE_MBZ_MASK), VMX_IGS_PAE_PDPTE_RESERVED);
10269
10270	rc = VMXReadVmcs64(VMX_VMCS64_GUEST_PDPTE3_FULL, &u64Val);
10271	AssertRC(rc);
10272	HMVMX_CHECK_BREAK(!(u64Val & X86_PDPE_PAE_MBZ_MASK), VMX_IGS_PAE_PDPTE_RESERVED);
10273	}
10274
10275	/* Shouldn't happen but distinguish it from AssertRCBreak() errors. */
10276	if (uError == VMX_IGS_ERROR)
10277	uError = VMX_IGS_REASON_NOT_FOUND;
10278	} while (0);
10279
10280	pVCpu->hm.s.u32HMError = uError;
10281	pVCpu->hm.s.vmx.LastError.u32GuestIntrState = u32IntrState;
10282	return uError;
10283
10284	#undef HMVMX_ERROR_BREAK
10285	#undef HMVMX_CHECK_BREAK
10286	}
10287
10288
10289	/**
10290	* Map the APIC-access page for virtualizing APIC accesses.
10291	*
10292	* This can cause a longjumps to R3 due to the acquisition of the PGM lock. Hence,
10293	* this not done as part of exporting guest state, see @bugref{8721}.
10294	*
10295	* @returns VBox status code.
10296	* @param pVCpu The cross context virtual CPU structure.
10297	*/
10298	static int hmR0VmxMapHCApicAccessPage(PVMCPUCC pVCpu)
10299	{
10300	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
10301	uint64_t const u64MsrApicBase = APICGetBaseMsrNoCheck(pVCpu);
10302
10303	Assert(PDMHasApic(pVM));
10304	Assert(u64MsrApicBase);
10305
10306	RTGCPHYS const GCPhysApicBase = u64MsrApicBase & PAGE_BASE_GC_MASK;
10307	Log4Func(("Mappping HC APIC-access page at %#RGp\n", GCPhysApicBase));
10308
10309	/* Unalias the existing mapping. */
10310	int rc = PGMHandlerPhysicalReset(pVM, GCPhysApicBase);
10311	AssertRCReturn(rc, rc);
10312
10313	/* Map the HC APIC-access page in place of the MMIO page, also updates the shadow page tables if necessary. */
10314	Assert(pVM->hmr0.s.vmx.HCPhysApicAccess != NIL_RTHCPHYS);
10315	rc = IOMR0MmioMapMmioHCPage(pVM, pVCpu, GCPhysApicBase, pVM->hmr0.s.vmx.HCPhysApicAccess, X86_PTE_RW \| X86_PTE_P);
10316	AssertRCReturn(rc, rc);
10317
10318	/* Update the per-VCPU cache of the APIC base MSR. */
10319	pVCpu->hm.s.vmx.u64GstMsrApicBase = u64MsrApicBase;
10320	return VINF_SUCCESS;
10321	}
10322
10323
10324	/**
10325	* Worker function passed to RTMpOnSpecific() that is to be called on the target
10326	* CPU.
10327	*
10328	* @param idCpu The ID for the CPU the function is called on.
10329	* @param pvUser1 Null, not used.
10330	* @param pvUser2 Null, not used.
10331	*/
10332	static DECLCALLBACK(void) hmR0DispatchHostNmi(RTCPUID idCpu, void pvUser1, void pvUser2)
10333	{
10334	RT_NOREF3(idCpu, pvUser1, pvUser2);
10335	VMXDispatchHostNmi();
10336	}
10337
10338
10339	/**
10340	* Dispatching an NMI on the host CPU that received it.
10341	*
10342	* @returns VBox status code.
10343	* @param pVCpu The cross context virtual CPU structure.
10344	* @param pVmcsInfo The VMCS info. object corresponding to the VMCS that was
10345	* executing when receiving the host NMI in VMX non-root
10346	* operation.
10347	*/
10348	static int hmR0VmxExitHostNmi(PVMCPUCC pVCpu, PCVMXVMCSINFO pVmcsInfo)
10349	{
10350	RTCPUID const idCpu = pVmcsInfo->idHostCpuExec;
10351	Assert(idCpu != NIL_RTCPUID);
10352
10353	/*
10354	* We don't want to delay dispatching the NMI any more than we have to. However,
10355	* we have already chosen -not- to dispatch NMIs when interrupts were still disabled
10356	* after executing guest or nested-guest code for the following reasons:
10357	*
10358	* - We would need to perform VMREADs with interrupts disabled and is orders of
10359	* magnitude worse when we run as a nested hypervisor without VMCS shadowing
10360	* supported by the host hypervisor.
10361	*
10362	* - It affects the common VM-exit scenario and keeps interrupts disabled for a
10363	* longer period of time just for handling an edge case like host NMIs which do
10364	* not occur nearly as frequently as other VM-exits.
10365	*
10366	* Let's cover the most likely scenario first. Check if we are on the target CPU
10367	* and dispatch the NMI right away. This should be much faster than calling into
10368	* RTMpOnSpecific() machinery.
10369	*/
10370	bool fDispatched = false;
10371	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
10372	if (idCpu == RTMpCpuId())
10373	{
10374	VMXDispatchHostNmi();
10375	fDispatched = true;
10376	}
10377	ASMSetFlags(fEFlags);
10378	if (fDispatched)
10379	{
10380	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
10381	return VINF_SUCCESS;
10382	}
10383
10384	/*
10385	* RTMpOnSpecific() waits until the worker function has run on the target CPU. So
10386	* there should be no race or recursion even if we are unlucky enough to be preempted
10387	* (to the target CPU) without dispatching the host NMI above.
10388	*/
10389	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGCIpi);
10390	return RTMpOnSpecific(idCpu, &hmR0DispatchHostNmi, NULL /* pvUser1 /, NULL / pvUser2 */);
10391	}
10392
10393
10394	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
10395	/**
10396	* Merges the guest with the nested-guest MSR bitmap in preparation of executing the
10397	* nested-guest using hardware-assisted VMX.
10398	*
10399	* @param pVCpu The cross context virtual CPU structure.
10400	* @param pVmcsInfoNstGst The nested-guest VMCS info. object.
10401	* @param pVmcsInfoGst The guest VMCS info. object.
10402	*/
10403	static void hmR0VmxMergeMsrBitmapNested(PCVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfoNstGst, PCVMXVMCSINFO pVmcsInfoGst)
10404	{
10405	uint32_t const cbMsrBitmap = X86_PAGE_4K_SIZE;
10406	uint64_t pu64MsrBitmap = (uint64_t )pVmcsInfoNstGst->pvMsrBitmap;
10407	Assert(pu64MsrBitmap);
10408
10409	/*
10410	* We merge the guest MSR bitmap with the nested-guest MSR bitmap such that any
10411	* MSR that is intercepted by the guest is also intercepted while executing the
10412	* nested-guest using hardware-assisted VMX.
10413	*
10414	* Note! If the nested-guest is not using an MSR bitmap, every MSR must cause a
10415	* nested-guest VM-exit even if the outer guest is not intercepting some
10416	* MSRs. We cannot assume the caller has initialized the nested-guest
10417	* MSR bitmap in this case.
10418	*
10419	* The nested hypervisor may also switch whether it uses MSR bitmaps for
10420	* each of its VM-entry, hence initializing it once per-VM while setting
10421	* up the nested-guest VMCS is not sufficient.
10422	*/
10423	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
10424	if (pVmcsNstGst->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
10425	{
10426	uint64_t const pu64MsrBitmapNstGst = (uint64_t const )pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pvMsrBitmap);
10427	uint64_t const pu64MsrBitmapGst = (uint64_t const )pVmcsInfoGst->pvMsrBitmap;
10428	Assert(pu64MsrBitmapNstGst);
10429	Assert(pu64MsrBitmapGst);
10430
10431	/** @todo Detect and use EVEX.POR? */
10432	uint32_t const cFrags = cbMsrBitmap / sizeof(uint64_t);
10433	for (uint32_t i = 0; i < cFrags; i++)
10434	pu64MsrBitmap[i] = pu64MsrBitmapNstGst[i] \| pu64MsrBitmapGst[i];
10435	}
10436	else
10437	ASMMemFill32(pu64MsrBitmap, cbMsrBitmap, UINT32_C(0xffffffff));
10438	}
10439
10440
10441	/**
10442	* Merges the guest VMCS in to the nested-guest VMCS controls in preparation of
10443	* hardware-assisted VMX execution of the nested-guest.
10444	*
10445	* For a guest, we don't modify these controls once we set up the VMCS and hence
10446	* this function is never called.
10447	*
10448	* For nested-guests since the nested hypervisor provides these controls on every
10449	* nested-guest VM-entry and could potentially change them everytime we need to
10450	* merge them before every nested-guest VM-entry.
10451	*
10452	* @returns VBox status code.
10453	* @param pVCpu The cross context virtual CPU structure.
10454	*/
10455	static int hmR0VmxMergeVmcsNested(PVMCPUCC pVCpu)
10456	{
10457	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
10458	PCVMXVMCSINFO pVmcsInfoGst = &pVCpu->hmr0.s.vmx.VmcsInfo;
10459	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
10460	Assert(pVmcsNstGst);
10461
10462	/*
10463	* Merge the controls with the requirements of the guest VMCS.
10464	*
10465	* We do not need to validate the nested-guest VMX features specified in the nested-guest
10466	* VMCS with the features supported by the physical CPU as it's already done by the
10467	* VMLAUNCH/VMRESUME instruction emulation.
10468	*
10469	* This is because the VMX features exposed by CPUM (through CPUID/MSRs) to the guest are
10470	* derived from the VMX features supported by the physical CPU.
10471	*/
10472
10473	/* Pin-based VM-execution controls. */
10474	uint32_t const u32PinCtls = pVmcsNstGst->u32PinCtls \| pVmcsInfoGst->u32PinCtls;
10475
10476	/* Processor-based VM-execution controls. */
10477	uint32_t u32ProcCtls = (pVmcsNstGst->u32ProcCtls & ~VMX_PROC_CTLS_USE_IO_BITMAPS)
10478	\| (pVmcsInfoGst->u32ProcCtls & ~( VMX_PROC_CTLS_INT_WINDOW_EXIT
10479	\| VMX_PROC_CTLS_NMI_WINDOW_EXIT
10480	\| VMX_PROC_CTLS_MOV_DR_EXIT
10481	\| VMX_PROC_CTLS_USE_TPR_SHADOW
10482	\| VMX_PROC_CTLS_MONITOR_TRAP_FLAG));
10483
10484	/* Secondary processor-based VM-execution controls. */
10485	uint32_t const u32ProcCtls2 = (pVmcsNstGst->u32ProcCtls2 & ~VMX_PROC_CTLS2_VPID)
10486	\| (pVmcsInfoGst->u32ProcCtls2 & ~( VMX_PROC_CTLS2_VIRT_APIC_ACCESS
10487	\| VMX_PROC_CTLS2_INVPCID
10488	\| VMX_PROC_CTLS2_VMCS_SHADOWING
10489	\| VMX_PROC_CTLS2_RDTSCP
10490	\| VMX_PROC_CTLS2_XSAVES_XRSTORS
10491	\| VMX_PROC_CTLS2_APIC_REG_VIRT
10492	\| VMX_PROC_CTLS2_VIRT_INT_DELIVERY
10493	\| VMX_PROC_CTLS2_VMFUNC));
10494
10495	/*
10496	* VM-entry controls:
10497	* These controls contains state that depends on the nested-guest state (primarily
10498	* EFER MSR) and is thus not constant between VMLAUNCH/VMRESUME and the nested-guest
10499	* VM-exit. Although the nested hypervisor cannot change it, we need to in order to
10500	* properly continue executing the nested-guest if the EFER MSR changes but does not
10501	* cause a nested-guest VM-exits.
10502	*
10503	* VM-exit controls:
10504	* These controls specify the host state on return. We cannot use the controls from
10505	* the nested hypervisor state as is as it would contain the guest state rather than
10506	* the host state. Since the host state is subject to change (e.g. preemption, trips
10507	* to ring-3, longjmp and rescheduling to a different host CPU) they are not constant
10508	* through VMLAUNCH/VMRESUME and the nested-guest VM-exit.
10509	*
10510	* VM-entry MSR-load:
10511	* The guest MSRs from the VM-entry MSR-load area are already loaded into the guest-CPU
10512	* context by the VMLAUNCH/VMRESUME instruction emulation.
10513	*
10514	* VM-exit MSR-store:
10515	* The VM-exit emulation will take care of populating the MSRs from the guest-CPU context
10516	* back into the VM-exit MSR-store area.
10517	*
10518	* VM-exit MSR-load areas:
10519	* This must contain the real host MSRs with hardware-assisted VMX execution. Hence, we
10520	* can entirely ignore what the nested hypervisor wants to load here.
10521	*/
10522
10523	/*
10524	* Exception bitmap.
10525	*
10526	* We could remove #UD from the guest bitmap and merge it with the nested-guest bitmap
10527	* here (and avoid doing anything while exporting nested-guest state), but to keep the
10528	* code more flexible if intercepting exceptions become more dynamic in the future we do
10529	* it as part of exporting the nested-guest state.
10530	*/
10531	uint32_t const u32XcptBitmap = pVmcsNstGst->u32XcptBitmap \| pVmcsInfoGst->u32XcptBitmap;
10532
10533	/*
10534	* CR0/CR4 guest/host mask.
10535	*
10536	* Modifications by the nested-guest to CR0/CR4 bits owned by the host and the guest must
10537	* cause VM-exits, so we need to merge them here.
10538	*/
10539	uint64_t const u64Cr0Mask = pVmcsNstGst->u64Cr0Mask.u \| pVmcsInfoGst->u64Cr0Mask;
10540	uint64_t const u64Cr4Mask = pVmcsNstGst->u64Cr4Mask.u \| pVmcsInfoGst->u64Cr4Mask;
10541
10542	/*
10543	* Page-fault error-code mask and match.
10544	*
10545	* Although we require unrestricted guest execution (and thereby nested-paging) for
10546	* hardware-assisted VMX execution of nested-guests and thus the outer guest doesn't
10547	* normally intercept #PFs, it might intercept them for debugging purposes.
10548	*
10549	* If the outer guest is not intercepting #PFs, we can use the nested-guest #PF filters.
10550	* If the outer guest is intercepting #PFs, we must intercept all #PFs.
10551	*/
10552	uint32_t u32XcptPFMask;
10553	uint32_t u32XcptPFMatch;
10554	if (!(pVmcsInfoGst->u32XcptBitmap & RT_BIT(X86_XCPT_PF)))
10555	{
10556	u32XcptPFMask = pVmcsNstGst->u32XcptPFMask;
10557	u32XcptPFMatch = pVmcsNstGst->u32XcptPFMatch;
10558	}
10559	else
10560	{
10561	u32XcptPFMask = 0;
10562	u32XcptPFMatch = 0;
10563	}
10564
10565	/*
10566	* Pause-Loop exiting.
10567	*/
10568	/** @todo r=bird: given that both pVM->hm.s.vmx.cPleGapTicks and
10569	* pVM->hm.s.vmx.cPleWindowTicks defaults to zero, I cannot see how
10570	* this will work... */
10571	uint32_t const cPleGapTicks = RT_MIN(pVM->hm.s.vmx.cPleGapTicks, pVmcsNstGst->u32PleGap);
10572	uint32_t const cPleWindowTicks = RT_MIN(pVM->hm.s.vmx.cPleWindowTicks, pVmcsNstGst->u32PleWindow);
10573
10574	/*
10575	* Pending debug exceptions.
10576	* Currently just copy whatever the nested-guest provides us.
10577	*/
10578	uint64_t const uPendingDbgXcpts = pVmcsNstGst->u64GuestPendingDbgXcpts.u;
10579
10580	/*
10581	* I/O Bitmap.
10582	*
10583	* We do not use the I/O bitmap that may be provided by the nested hypervisor as we always
10584	* intercept all I/O port accesses.
10585	*/
10586	Assert(u32ProcCtls & VMX_PROC_CTLS_UNCOND_IO_EXIT);
10587	Assert(!(u32ProcCtls & VMX_PROC_CTLS_USE_IO_BITMAPS));
10588
10589	/*
10590	* VMCS shadowing.
10591	*
10592	* We do not yet expose VMCS shadowing to the guest and thus VMCS shadowing should not be
10593	* enabled while executing the nested-guest.
10594	*/
10595	Assert(!(u32ProcCtls2 & VMX_PROC_CTLS2_VMCS_SHADOWING));
10596
10597	/*
10598	* APIC-access page.
10599	*/
10600	RTHCPHYS HCPhysApicAccess;
10601	if (u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
10602	{
10603	Assert(g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS);
10604	RTGCPHYS const GCPhysApicAccess = pVmcsNstGst->u64AddrApicAccess.u;
10605
10606	/** @todo NSTVMX: This is not really correct but currently is required to make
10607	* things work. We need to re-enable the page handler when we fallback to
10608	* IEM execution of the nested-guest! */
10609	PGMHandlerPhysicalPageTempOff(pVM, GCPhysApicAccess, GCPhysApicAccess);
10610
10611	void *pvPage;
10612	PGMPAGEMAPLOCK PgLockApicAccess;
10613	int rc = PGMPhysGCPhys2CCPtr(pVM, GCPhysApicAccess, &pvPage, &PgLockApicAccess);
10614	if (RT_SUCCESS(rc))
10615	{
10616	rc = PGMPhysGCPhys2HCPhys(pVM, GCPhysApicAccess, &HCPhysApicAccess);
10617	AssertMsgRCReturn(rc, ("Failed to get host-physical address for APIC-access page at %#RGp\n", GCPhysApicAccess), rc);
10618
10619	/** @todo Handle proper releasing of page-mapping lock later. */
10620	PGMPhysReleasePageMappingLock(pVCpu->CTX_SUFF(pVM), &PgLockApicAccess);
10621	}
10622	else
10623	return rc;
10624	}
10625	else
10626	HCPhysApicAccess = 0;
10627
10628	/*
10629	* Virtual-APIC page and TPR threshold.
10630	*/
10631	RTHCPHYS HCPhysVirtApic;
10632	uint32_t u32TprThreshold;
10633	if (u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
10634	{
10635	Assert(g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_TPR_SHADOW);
10636	RTGCPHYS const GCPhysVirtApic = pVmcsNstGst->u64AddrVirtApic.u;
10637
10638	void *pvPage;
10639	PGMPAGEMAPLOCK PgLockVirtApic;
10640	int rc = PGMPhysGCPhys2CCPtr(pVM, GCPhysVirtApic, &pvPage, &PgLockVirtApic);
10641	if (RT_SUCCESS(rc))
10642	{
10643	rc = PGMPhysGCPhys2HCPhys(pVM, GCPhysVirtApic, &HCPhysVirtApic);
10644	AssertMsgRCReturn(rc, ("Failed to get host-physical address for virtual-APIC page at %#RGp\n", GCPhysVirtApic), rc);
10645
10646	/** @todo Handle proper releasing of page-mapping lock later. */
10647	PGMPhysReleasePageMappingLock(pVCpu->CTX_SUFF(pVM), &PgLockVirtApic);
10648	}
10649	else
10650	return rc;
10651
10652	u32TprThreshold = pVmcsNstGst->u32TprThreshold;
10653	}
10654	else
10655	{
10656	HCPhysVirtApic = 0;
10657	u32TprThreshold = 0;
10658
10659	/*
10660	* We must make sure CR8 reads/write must cause VM-exits when TPR shadowing is not
10661	* used by the nested hypervisor. Preventing MMIO accesses to the physical APIC will
10662	* be taken care of by EPT/shadow paging.
10663	*/
10664	if (pVM->hmr0.s.fAllow64BitGuests)
10665	u32ProcCtls \|= VMX_PROC_CTLS_CR8_STORE_EXIT
10666	\| VMX_PROC_CTLS_CR8_LOAD_EXIT;
10667	}
10668
10669	/*
10670	* Validate basic assumptions.
10671	*/
10672	PVMXVMCSINFO pVmcsInfoNstGst = &pVCpu->hmr0.s.vmx.VmcsInfoNstGst;
10673	Assert(pVM->hmr0.s.vmx.fUnrestrictedGuest);
10674	Assert(g_HmMsrs.u.vmx.ProcCtls.n.allowed1 & VMX_PROC_CTLS_USE_SECONDARY_CTLS);
10675	Assert(hmGetVmxActiveVmcsInfo(pVCpu) == pVmcsInfoNstGst);
10676
10677	/*
10678	* Commit it to the nested-guest VMCS.
10679	*/
10680	int rc = VINF_SUCCESS;
10681	if (pVmcsInfoNstGst->u32PinCtls != u32PinCtls)
10682	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PIN_EXEC, u32PinCtls);
10683	if (pVmcsInfoNstGst->u32ProcCtls != u32ProcCtls)
10684	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, u32ProcCtls);
10685	if (pVmcsInfoNstGst->u32ProcCtls2 != u32ProcCtls2)
10686	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, u32ProcCtls2);
10687	if (pVmcsInfoNstGst->u32XcptBitmap != u32XcptBitmap)
10688	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, u32XcptBitmap);
10689	if (pVmcsInfoNstGst->u64Cr0Mask != u64Cr0Mask)
10690	rc \|= VMXWriteVmcsNw(VMX_VMCS_CTRL_CR0_MASK, u64Cr0Mask);
10691	if (pVmcsInfoNstGst->u64Cr4Mask != u64Cr4Mask)
10692	rc \|= VMXWriteVmcsNw(VMX_VMCS_CTRL_CR4_MASK, u64Cr4Mask);
10693	if (pVmcsInfoNstGst->u32XcptPFMask != u32XcptPFMask)
10694	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MASK, u32XcptPFMask);
10695	if (pVmcsInfoNstGst->u32XcptPFMatch != u32XcptPFMatch)
10696	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PAGEFAULT_ERROR_MATCH, u32XcptPFMatch);
10697	if ( !(u32ProcCtls & VMX_PROC_CTLS_PAUSE_EXIT)
10698	&& (u32ProcCtls2 & VMX_PROC_CTLS2_PAUSE_LOOP_EXIT))
10699	{
10700	Assert(g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_PAUSE_LOOP_EXIT);
10701	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PLE_GAP, cPleGapTicks);
10702	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_PLE_WINDOW, cPleWindowTicks);
10703	}
10704	if (u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
10705	{
10706	rc \|= VMXWriteVmcs32(VMX_VMCS32_CTRL_TPR_THRESHOLD, u32TprThreshold);
10707	rc \|= VMXWriteVmcs64(VMX_VMCS64_CTRL_VIRT_APIC_PAGEADDR_FULL, HCPhysVirtApic);
10708	}
10709	if (u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
10710	rc \|= VMXWriteVmcs64(VMX_VMCS64_CTRL_APIC_ACCESSADDR_FULL, HCPhysApicAccess);
10711	rc \|= VMXWriteVmcsNw(VMX_VMCS_GUEST_PENDING_DEBUG_XCPTS, uPendingDbgXcpts);
10712	AssertRC(rc);
10713
10714	/*
10715	* Update the nested-guest VMCS cache.
10716	*/
10717	pVmcsInfoNstGst->u32PinCtls = u32PinCtls;
10718	pVmcsInfoNstGst->u32ProcCtls = u32ProcCtls;
10719	pVmcsInfoNstGst->u32ProcCtls2 = u32ProcCtls2;
10720	pVmcsInfoNstGst->u32XcptBitmap = u32XcptBitmap;
10721	pVmcsInfoNstGst->u64Cr0Mask = u64Cr0Mask;
10722	pVmcsInfoNstGst->u64Cr4Mask = u64Cr4Mask;
10723	pVmcsInfoNstGst->u32XcptPFMask = u32XcptPFMask;
10724	pVmcsInfoNstGst->u32XcptPFMatch = u32XcptPFMatch;
10725	pVmcsInfoNstGst->HCPhysVirtApic = HCPhysVirtApic;
10726
10727	/*
10728	* We need to flush the TLB if we are switching the APIC-access page address.
10729	* See Intel spec. 28.3.3.4 "Guidelines for Use of the INVEPT Instruction".
10730	*/
10731	if (u32ProcCtls2 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
10732	pVCpu->hm.s.vmx.fSwitchedNstGstFlushTlb = true;
10733
10734	/*
10735	* MSR bitmap.
10736	*
10737	* The MSR bitmap address has already been initialized while setting up the nested-guest
10738	* VMCS, here we need to merge the MSR bitmaps.
10739	*/
10740	if (u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
10741	hmR0VmxMergeMsrBitmapNested(pVCpu, pVmcsInfoNstGst, pVmcsInfoGst);
10742
10743	return VINF_SUCCESS;
10744	}
10745	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
10746
10747
10748	/**
10749	* Does the preparations before executing guest code in VT-x.
10750	*
10751	* This may cause longjmps to ring-3 and may even result in rescheduling to the
10752	* recompiler/IEM. We must be cautious what we do here regarding committing
10753	* guest-state information into the VMCS assuming we assuredly execute the
10754	* guest in VT-x mode.
10755	*
10756	* If we fall back to the recompiler/IEM after updating the VMCS and clearing
10757	* the common-state (TRPM/forceflags), we must undo those changes so that the
10758	* recompiler/IEM can (and should) use them when it resumes guest execution.
10759	* Otherwise such operations must be done when we can no longer exit to ring-3.
10760	*
10761	* @returns Strict VBox status code (i.e. informational status codes too).
10762	* @retval VINF_SUCCESS if we can proceed with running the guest, interrupts
10763	* have been disabled.
10764	* @retval VINF_VMX_VMEXIT if a nested-guest VM-exit occurs (e.g., while evaluating
10765	* pending events).
10766	* @retval VINF_EM_RESET if a triple-fault occurs while injecting a
10767	* double-fault into the guest.
10768	* @retval VINF_EM_DBG_STEPPED if @a fStepping is true and an event was
10769	* dispatched directly.
10770	* @retval VINF_* scheduling changes, we have to go back to ring-3.
10771	*
10772	* @param pVCpu The cross context virtual CPU structure.
10773	* @param pVmxTransient The VMX-transient structure.
10774	* @param fStepping Whether we are single-stepping the guest in the
10775	* hypervisor debugger. Makes us ignore some of the reasons
10776	* for returning to ring-3, and return VINF_EM_DBG_STEPPED
10777	* if event dispatching took place.
10778	*/
10779	static VBOXSTRICTRC hmR0VmxPreRunGuest(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, bool fStepping)
10780	{
10781	Assert(VMMRZCallRing3IsEnabled(pVCpu));
10782
10783	Log4Func(("fIsNested=%RTbool fStepping=%RTbool\n", pVmxTransient->fIsNestedGuest, fStepping));
10784
10785	#ifdef VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM
10786	if (pVmxTransient->fIsNestedGuest)
10787	{
10788	RT_NOREF2(pVCpu, fStepping);
10789	Log2Func(("Rescheduling to IEM due to nested-hwvirt or forced IEM exec -> VINF_EM_RESCHEDULE_REM\n"));
10790	return VINF_EM_RESCHEDULE_REM;
10791	}
10792	#endif
10793
10794	/*
10795	* Check and process force flag actions, some of which might require us to go back to ring-3.
10796	*/
10797	VBOXSTRICTRC rcStrict = hmR0VmxCheckForceFlags(pVCpu, pVmxTransient, fStepping);
10798	if (rcStrict == VINF_SUCCESS)
10799	{
10800	/* FFs don't get set all the time. */
10801	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
10802	if ( pVmxTransient->fIsNestedGuest
10803	&& !CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
10804	{
10805	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchNstGstVmexit);
10806	return VINF_VMX_VMEXIT;
10807	}
10808	#endif
10809	}
10810	else
10811	return rcStrict;
10812
10813	/*
10814	* Virtualize memory-mapped accesses to the physical APIC (may take locks).
10815	*/
10816	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
10817	if ( !pVCpu->hm.s.vmx.u64GstMsrApicBase
10818	&& (g_HmMsrs.u.vmx.ProcCtls2.n.allowed1 & VMX_PROC_CTLS2_VIRT_APIC_ACCESS)
10819	&& PDMHasApic(pVM))
10820	{
10821	int rc = hmR0VmxMapHCApicAccessPage(pVCpu);
10822	AssertRCReturn(rc, rc);
10823	}
10824
10825	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
10826	/*
10827	* Merge guest VMCS controls with the nested-guest VMCS controls.
10828	*
10829	* Even if we have not executed the guest prior to this (e.g. when resuming from a
10830	* saved state), we should be okay with merging controls as we initialize the
10831	* guest VMCS controls as part of VM setup phase.
10832	*/
10833	if ( pVmxTransient->fIsNestedGuest
10834	&& !pVCpu->hm.s.vmx.fMergedNstGstCtls)
10835	{
10836	int rc = hmR0VmxMergeVmcsNested(pVCpu);
10837	AssertRCReturn(rc, rc);
10838	pVCpu->hm.s.vmx.fMergedNstGstCtls = true;
10839	}
10840	#endif
10841
10842	/*
10843	* Evaluate events to be injected into the guest.
10844	*
10845	* Events in TRPM can be injected without inspecting the guest state.
10846	* If any new events (interrupts/NMI) are pending currently, we try to set up the
10847	* guest to cause a VM-exit the next time they are ready to receive the event.
10848	*/
10849	if (TRPMHasTrap(pVCpu))
10850	hmR0VmxTrpmTrapToPendingEvent(pVCpu);
10851
10852	uint32_t fIntrState;
10853	rcStrict = hmR0VmxEvaluatePendingEvent(pVCpu, pVmxTransient, &fIntrState);
10854
10855	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
10856	/*
10857	* While evaluating pending events if something failed (unlikely) or if we were
10858	* preparing to run a nested-guest but performed a nested-guest VM-exit, we should bail.
10859	*/
10860	if (rcStrict != VINF_SUCCESS)
10861	return rcStrict;
10862	if ( pVmxTransient->fIsNestedGuest
10863	&& !CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
10864	{
10865	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchNstGstVmexit);
10866	return VINF_VMX_VMEXIT;
10867	}
10868	#else
10869	Assert(rcStrict == VINF_SUCCESS);
10870	#endif
10871
10872	/*
10873	* Event injection may take locks (currently the PGM lock for real-on-v86 case) and thus
10874	* needs to be done with longjmps or interrupts + preemption enabled. Event injection might
10875	* also result in triple-faulting the VM.
10876	*
10877	* With nested-guests, the above does not apply since unrestricted guest execution is a
10878	* requirement. Regardless, we do this here to avoid duplicating code elsewhere.
10879	*/
10880	rcStrict = hmR0VmxInjectPendingEvent(pVCpu, pVmxTransient, fIntrState, fStepping);
10881	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
10882	{ /* likely */ }
10883	else
10884	{
10885	AssertMsg(rcStrict == VINF_EM_RESET \|\| (rcStrict == VINF_EM_DBG_STEPPED && fStepping),
10886	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
10887	return rcStrict;
10888	}
10889
10890	/*
10891	* A longjump might result in importing CR3 even for VM-exits that don't necessarily
10892	* import CR3 themselves. We will need to update them here, as even as late as the above
10893	* hmR0VmxInjectPendingEvent() call may lazily import guest-CPU state on demand causing
10894	* the below force flags to be set.
10895	*/
10896	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3))
10897	{
10898	Assert(!(ASMAtomicUoReadU64(&pVCpu->cpum.GstCtx.fExtrn) & CPUMCTX_EXTRN_CR3));
10899	int rc2 = PGMUpdateCR3(pVCpu, CPUMGetGuestCR3(pVCpu));
10900	AssertMsgReturn(rc2 == VINF_SUCCESS \|\| rc2 == VINF_PGM_SYNC_CR3,
10901	("%Rrc\n", rc2), RT_FAILURE_NP(rc2) ? rc2 : VERR_IPE_UNEXPECTED_INFO_STATUS);
10902	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
10903	}
10904	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES))
10905	{
10906	PGMGstUpdatePaePdpes(pVCpu, &pVCpu->hm.s.aPdpes[0]);
10907	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
10908	}
10909
10910	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
10911	/* Paranoia. */
10912	Assert(!pVmxTransient->fIsNestedGuest \|\| CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx));
10913	#endif
10914
10915	/*
10916	* No longjmps to ring-3 from this point on!!!
10917	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
10918	* This also disables flushing of the R0-logger instance (if any).
10919	*/
10920	VMMRZCallRing3Disable(pVCpu);
10921
10922	/*
10923	* Export the guest state bits.
10924	*
10925	* We cannot perform longjmps while loading the guest state because we do not preserve the
10926	* host/guest state (although the VMCS will be preserved) across longjmps which can cause
10927	* CPU migration.
10928	*
10929	* If we are injecting events to a real-on-v86 mode guest, we would have updated RIP and some segment
10930	* registers. Hence, exporting of the guest state needs to be done -after- injection of events.
10931	*/
10932	rcStrict = hmR0VmxExportGuestStateOptimal(pVCpu, pVmxTransient);
10933	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
10934	{ /* likely */ }
10935	else
10936	{
10937	VMMRZCallRing3Enable(pVCpu);
10938	return rcStrict;
10939	}
10940
10941	/*
10942	* We disable interrupts so that we don't miss any interrupts that would flag preemption
10943	* (IPI/timers etc.) when thread-context hooks aren't used and we've been running with
10944	* preemption disabled for a while. Since this is purely to aid the
10945	* RTThreadPreemptIsPending() code, it doesn't matter that it may temporarily reenable and
10946	* disable interrupt on NT.
10947	*
10948	* We need to check for force-flags that could've possible been altered since we last
10949	* checked them (e.g. by PDMGetInterrupt() leaving the PDM critical section,
10950	* see @bugref{6398}).
10951	*
10952	* We also check a couple of other force-flags as a last opportunity to get the EMT back
10953	* to ring-3 before executing guest code.
10954	*/
10955	pVmxTransient->fEFlags = ASMIntDisableFlags();
10956
10957	if ( ( !VM_FF_IS_ANY_SET(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
10958	&& !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
10959	\|\| ( fStepping /* Optimized for the non-stepping case, so a bit of unnecessary work when stepping. */
10960	&& !VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HM_TO_R3_MASK & ~(VMCPU_FF_TIMER \| VMCPU_FF_PDM_CRITSECT))) )
10961	{
10962	if (!RTThreadPreemptIsPending(NIL_RTTHREAD))
10963	{
10964	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
10965	/*
10966	* If we are executing a nested-guest make sure that we should intercept subsequent
10967	* events. The one we are injecting might be part of VM-entry. This is mainly to keep
10968	* the VM-exit instruction emulation happy.
10969	*/
10970	if (pVmxTransient->fIsNestedGuest)
10971	CPUMSetGuestVmxInterceptEvents(&pVCpu->cpum.GstCtx, true);
10972	#endif
10973
10974	/*
10975	* We've injected any pending events. This is really the point of no return (to ring-3).
10976	*
10977	* Note! The caller expects to continue with interrupts & longjmps disabled on successful
10978	* returns from this function, so do -not- enable them here.
10979	*/
10980	pVCpu->hm.s.Event.fPending = false;
10981	return VINF_SUCCESS;
10982	}
10983
10984	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchPendingHostIrq);
10985	rcStrict = VINF_EM_RAW_INTERRUPT;
10986	}
10987	else
10988	{
10989	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
10990	rcStrict = VINF_EM_RAW_TO_R3;
10991	}
10992
10993	ASMSetFlags(pVmxTransient->fEFlags);
10994	VMMRZCallRing3Enable(pVCpu);
10995
10996	return rcStrict;
10997	}
10998
10999
11000	/**
11001	* Final preparations before executing guest code using hardware-assisted VMX.
11002	*
11003	* We can no longer get preempted to a different host CPU and there are no returns
11004	* to ring-3. We ignore any errors that may happen from this point (e.g. VMWRITE
11005	* failures), this function is not intended to fail sans unrecoverable hardware
11006	* errors.
11007	*
11008	* @param pVCpu The cross context virtual CPU structure.
11009	* @param pVmxTransient The VMX-transient structure.
11010	*
11011	* @remarks Called with preemption disabled.
11012	* @remarks No-long-jump zone!!!
11013	*/
11014	static void hmR0VmxPreRunGuestCommitted(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
11015	{
11016	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
11017	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
11018	Assert(!pVCpu->hm.s.Event.fPending);
11019
11020	/*
11021	* Indicate start of guest execution and where poking EMT out of guest-context is recognized.
11022	*/
11023	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
11024	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
11025
11026	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
11027	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
11028	PHMPHYSCPU pHostCpu = hmR0GetCurrentCpu();
11029	RTCPUID const idCurrentCpu = pHostCpu->idCpu;
11030
11031	if (!CPUMIsGuestFPUStateActive(pVCpu))
11032	{
11033	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestFpuState, x);
11034	if (CPUMR0LoadGuestFPU(pVM, pVCpu) == VINF_CPUM_HOST_CR0_MODIFIED)
11035	pVCpu->hm.s.fCtxChanged \|= HM_CHANGED_HOST_CONTEXT;
11036	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestFpuState, x);
11037	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadGuestFpu);
11038	}
11039
11040	/*
11041	* Re-export the host state bits as we may've been preempted (only happens when
11042	* thread-context hooks are used or when the VM start function changes) or if
11043	* the host CR0 is modified while loading the guest FPU state above.
11044	*
11045	* The 64-on-32 switcher saves the (64-bit) host state into the VMCS and if we
11046	* changed the switcher back to 32-bit, we must save the 32-bit host state here,
11047	* see @bugref{8432}.
11048	*
11049	* This may also happen when switching to/from a nested-guest VMCS without leaving
11050	* ring-0.
11051	*/
11052	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_HOST_CONTEXT)
11053	{
11054	hmR0VmxExportHostState(pVCpu);
11055	STAM_COUNTER_INC(&pVCpu->hm.s.StatExportHostState);
11056	}
11057	Assert(!(pVCpu->hm.s.fCtxChanged & HM_CHANGED_HOST_CONTEXT));
11058
11059	/*
11060	* Export the state shared between host and guest (FPU, debug, lazy MSRs).
11061	*/
11062	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_VMX_HOST_GUEST_SHARED_STATE)
11063	hmR0VmxExportSharedState(pVCpu, pVmxTransient);
11064	AssertMsg(!pVCpu->hm.s.fCtxChanged, ("fCtxChanged=%#RX64\n", pVCpu->hm.s.fCtxChanged));
11065
11066	/*
11067	* Store status of the shared guest/host debug state at the time of VM-entry.
11068	*/
11069	pVmxTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
11070	pVmxTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
11071
11072	/*
11073	* Always cache the TPR-shadow if the virtual-APIC page exists, thereby skipping
11074	* more than one conditional check. The post-run side of our code shall determine
11075	* if it needs to sync. the virtual APIC TPR with the TPR-shadow.
11076	*/
11077	if (pVmcsInfo->pbVirtApic)
11078	pVmxTransient->u8GuestTpr = pVmcsInfo->pbVirtApic[XAPIC_OFF_TPR];
11079
11080	/*
11081	* Update the host MSRs values in the VM-exit MSR-load area.
11082	*/
11083	if (!pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs)
11084	{
11085	if (pVmcsInfo->cExitMsrLoad > 0)
11086	hmR0VmxUpdateAutoLoadHostMsrs(pVCpu, pVmcsInfo);
11087	pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs = true;
11088	}
11089
11090	/*
11091	* Evaluate if we need to intercept guest RDTSC/P accesses. Set up the
11092	* VMX-preemption timer based on the next virtual sync clock deadline.
11093	*/
11094	if ( !pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer
11095	\|\| idCurrentCpu != pVCpu->hmr0.s.idLastCpu)
11096	{
11097	hmR0VmxUpdateTscOffsettingAndPreemptTimer(pVCpu, pVmxTransient, idCurrentCpu);
11098	pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer = true;
11099	}
11100
11101	/* Record statistics of how often we use TSC offsetting as opposed to intercepting RDTSC/P. */
11102	bool const fIsRdtscIntercepted = RT_BOOL(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_RDTSC_EXIT);
11103	if (!fIsRdtscIntercepted)
11104	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
11105	else
11106	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
11107
11108	ASMAtomicUoWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB flushing, set this across the world switch. */
11109	hmR0VmxFlushTaggedTlb(pHostCpu, pVCpu, pVmcsInfo); /* Invalidate the appropriate guest entries from the TLB. */
11110	Assert(idCurrentCpu == pVCpu->hmr0.s.idLastCpu);
11111	pVCpu->hm.s.vmx.LastError.idCurrentCpu = idCurrentCpu; /* Record the error reporting info. with the current host CPU. */
11112	pVmcsInfo->idHostCpuState = idCurrentCpu; /* Record the CPU for which the host-state has been exported. */
11113	pVmcsInfo->idHostCpuExec = idCurrentCpu; /* Record the CPU on which we shall execute. */
11114
11115	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
11116
11117	TMNotifyStartOfExecution(pVM, pVCpu); /* Notify TM to resume its clocks when TSC is tied to execution,
11118	as we're about to start executing the guest. */
11119
11120	/*
11121	* Load the guest TSC_AUX MSR when we are not intercepting RDTSCP.
11122	*
11123	* This is done this late as updating the TSC offsetting/preemption timer above
11124	* figures out if we can skip intercepting RDTSCP by calculating the number of
11125	* host CPU ticks till the next virtual sync deadline (for the dynamic case).
11126	*/
11127	if ( (pVmcsInfo->u32ProcCtls2 & VMX_PROC_CTLS2_RDTSCP)
11128	&& !fIsRdtscIntercepted)
11129	{
11130	hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_TSC_AUX);
11131
11132	/* NB: Because we call hmR0VmxAddAutoLoadStoreMsr with fUpdateHostMsr=true,
11133	it's safe even after hmR0VmxUpdateAutoLoadHostMsrs has already been done. */
11134	int rc = hmR0VmxAddAutoLoadStoreMsr(pVCpu, pVmxTransient, MSR_K8_TSC_AUX, CPUMGetGuestTscAux(pVCpu),
11135	true /* fSetReadWrite /, true / fUpdateHostMsr */);
11136	AssertRC(rc);
11137	Assert(!pVmxTransient->fRemoveTscAuxMsr);
11138	pVmxTransient->fRemoveTscAuxMsr = true;
11139	}
11140
11141	#ifdef VBOX_STRICT
11142	Assert(pVCpu->hmr0.s.vmx.fUpdatedHostAutoMsrs);
11143	hmR0VmxCheckAutoLoadStoreMsrs(pVCpu, pVmcsInfo, pVmxTransient->fIsNestedGuest);
11144	hmR0VmxCheckHostEferMsr(pVmcsInfo);
11145	AssertRC(hmR0VmxCheckCachedVmcsCtls(pVCpu, pVmcsInfo, pVmxTransient->fIsNestedGuest));
11146	#endif
11147
11148	#ifdef HMVMX_ALWAYS_CHECK_GUEST_STATE
11149	/** @todo r=ramshankar: We can now probably use iemVmxVmentryCheckGuestState here.
11150	* Add a PVMXMSRS parameter to it, so that IEM can look at the host MSRs,
11151	* see @bugref{9180#c54}. */
11152	uint32_t const uInvalidReason = hmR0VmxCheckGuestState(pVCpu, pVmcsInfo);
11153	if (uInvalidReason != VMX_IGS_REASON_NOT_FOUND)
11154	Log4(("hmR0VmxCheckGuestState returned %#x\n", uInvalidReason));
11155	#endif
11156	}
11157
11158
11159	/**
11160	* First C routine invoked after running guest code using hardware-assisted VMX.
11161	*
11162	* @param pVCpu The cross context virtual CPU structure.
11163	* @param pVmxTransient The VMX-transient structure.
11164	* @param rcVMRun Return code of VMLAUNCH/VMRESUME.
11165	*
11166	* @remarks Called with interrupts disabled, and returns with interrupts enabled!
11167	*
11168	* @remarks No-long-jump zone!!! This function will however re-enable longjmps
11169	* unconditionally when it is safe to do so.
11170	*/
11171	static void hmR0VmxPostRunGuest(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, int rcVMRun)
11172	{
11173	ASMAtomicUoWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB flushing. */
11174	ASMAtomicIncU32(&pVCpu->hmr0.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for EMT poking. */
11175	pVCpu->hm.s.fCtxChanged = 0; /* Exits/longjmps to ring-3 requires saving the guest state. */
11176	pVmxTransient->fVmcsFieldsRead = 0; /* Transient fields need to be read from the VMCS. */
11177	pVmxTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
11178	pVmxTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
11179
11180	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
11181	if (!(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_RDTSC_EXIT))
11182	{
11183	uint64_t uGstTsc;
11184	if (!pVmxTransient->fIsNestedGuest)
11185	uGstTsc = pVCpu->hmr0.s.uTscExit + pVmcsInfo->u64TscOffset;
11186	else
11187	{
11188	uint64_t const uNstGstTsc = pVCpu->hmr0.s.uTscExit + pVmcsInfo->u64TscOffset;
11189	uGstTsc = CPUMRemoveNestedGuestTscOffset(pVCpu, uNstGstTsc);
11190	}
11191	TMCpuTickSetLastSeen(pVCpu, uGstTsc); /* Update TM with the guest TSC. */
11192	}
11193
11194	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatPreExit, x);
11195	TMNotifyEndOfExecution(pVCpu->CTX_SUFF(pVM), pVCpu, pVCpu->hmr0.s.uTscExit); /* Notify TM that the guest is no longer running. */
11196	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
11197
11198	pVCpu->hmr0.s.vmx.fRestoreHostFlags \|= VMX_RESTORE_HOST_REQUIRED; /* Some host state messed up by VMX needs restoring. */
11199	pVmcsInfo->fVmcsState \|= VMX_V_VMCS_LAUNCH_STATE_LAUNCHED; /* Use VMRESUME instead of VMLAUNCH in the next run. */
11200	#ifdef VBOX_STRICT
11201	hmR0VmxCheckHostEferMsr(pVmcsInfo); /* Verify that the host EFER MSR wasn't modified. */
11202	#endif
11203	Assert(!ASMIntAreEnabled());
11204	ASMSetFlags(pVmxTransient->fEFlags); /* Enable interrupts. */
11205	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
11206
11207	#ifdef HMVMX_ALWAYS_CLEAN_TRANSIENT
11208	/*
11209	* Clean all the VMCS fields in the transient structure before reading
11210	* anything from the VMCS.
11211	*/
11212	pVmxTransient->uExitReason = 0;
11213	pVmxTransient->uExitIntErrorCode = 0;
11214	pVmxTransient->uExitQual = 0;
11215	pVmxTransient->uGuestLinearAddr = 0;
11216	pVmxTransient->uExitIntInfo = 0;
11217	pVmxTransient->cbExitInstr = 0;
11218	pVmxTransient->ExitInstrInfo.u = 0;
11219	pVmxTransient->uEntryIntInfo = 0;
11220	pVmxTransient->uEntryXcptErrorCode = 0;
11221	pVmxTransient->cbEntryInstr = 0;
11222	pVmxTransient->uIdtVectoringInfo = 0;
11223	pVmxTransient->uIdtVectoringErrorCode = 0;
11224	#endif
11225
11226	/*
11227	* Save the basic VM-exit reason and check if the VM-entry failed.
11228	* See Intel spec. 24.9.1 "Basic VM-exit Information".
11229	*/
11230	uint32_t uExitReason;
11231	int rc = VMXReadVmcs32(VMX_VMCS32_RO_EXIT_REASON, &uExitReason);
11232	AssertRC(rc);
11233	pVmxTransient->uExitReason = VMX_EXIT_REASON_BASIC(uExitReason);
11234	pVmxTransient->fVMEntryFailed = VMX_EXIT_REASON_HAS_ENTRY_FAILED(uExitReason);
11235
11236	/*
11237	* Log the VM-exit before logging anything else as otherwise it might be a
11238	* tad confusing what happens before and after the world-switch.
11239	*/
11240	HMVMX_LOG_EXIT(pVCpu, uExitReason);
11241
11242	/*
11243	* Remove the TSC_AUX MSR from the auto-load/store MSR area and reset any MSR
11244	* bitmap permissions, if it was added before VM-entry.
11245	*/
11246	if (pVmxTransient->fRemoveTscAuxMsr)
11247	{
11248	hmR0VmxRemoveAutoLoadStoreMsr(pVCpu, pVmxTransient, MSR_K8_TSC_AUX);
11249	pVmxTransient->fRemoveTscAuxMsr = false;
11250	}
11251
11252	/*
11253	* Check if VMLAUNCH/VMRESUME succeeded.
11254	* If this failed, we cause a guru meditation and cease further execution.
11255	*
11256	* However, if we are executing a nested-guest we might fail if we use the
11257	* fast path rather than fully emulating VMLAUNCH/VMRESUME instruction in IEM.
11258	*/
11259	if (RT_LIKELY(rcVMRun == VINF_SUCCESS))
11260	{
11261	/*
11262	* Update the VM-exit history array here even if the VM-entry failed due to:
11263	* - Invalid guest state.
11264	* - MSR loading.
11265	* - Machine-check event.
11266	*
11267	* In any of the above cases we will still have a "valid" VM-exit reason
11268	* despite @a fVMEntryFailed being false.
11269	*
11270	* See Intel spec. 26.7 "VM-Entry failures during or after loading guest state".
11271	*
11272	* Note! We don't have CS or RIP at this point. Will probably address that later
11273	* by amending the history entry added here.
11274	*/
11275	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_VMX, pVmxTransient->uExitReason & EMEXIT_F_TYPE_MASK),
11276	UINT64_MAX, pVCpu->hmr0.s.uTscExit);
11277
11278	if (RT_LIKELY(!pVmxTransient->fVMEntryFailed))
11279	{
11280	VMMRZCallRing3Enable(pVCpu);
11281
11282	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
11283	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
11284
11285	#ifdef HMVMX_ALWAYS_SAVE_RO_GUEST_STATE
11286	hmR0VmxReadAllRoFieldsVmcs(pVmxTransient);
11287	#endif
11288
11289	/*
11290	* Import the guest-interruptibility state always as we need it while evaluating
11291	* injecting events on re-entry.
11292	*
11293	* We don't import CR0 (when unrestricted guest execution is unavailable) despite
11294	* checking for real-mode while exporting the state because all bits that cause
11295	* mode changes wrt CR0 are intercepted.
11296	*/
11297	uint64_t const fImportMask = CPUMCTX_EXTRN_HM_VMX_INT_STATE
11298	#if defined(HMVMX_ALWAYS_SYNC_FULL_GUEST_STATE) \|\| defined(HMVMX_ALWAYS_SAVE_FULL_GUEST_STATE)
11299	\| HMVMX_CPUMCTX_EXTRN_ALL
11300	#elif defined(HMVMX_ALWAYS_SAVE_GUEST_RFLAGS)
11301	\| CPUMCTX_EXTRN_RFLAGS
11302	#endif
11303	;
11304	rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, fImportMask);
11305	AssertRC(rc);
11306
11307	/*
11308	* Sync the TPR shadow with our APIC state.
11309	*/
11310	if ( !pVmxTransient->fIsNestedGuest
11311	&& (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW))
11312	{
11313	Assert(pVmcsInfo->pbVirtApic);
11314	if (pVmxTransient->u8GuestTpr != pVmcsInfo->pbVirtApic[XAPIC_OFF_TPR])
11315	{
11316	rc = APICSetTpr(pVCpu, pVmcsInfo->pbVirtApic[XAPIC_OFF_TPR]);
11317	AssertRC(rc);
11318	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
11319	}
11320	}
11321
11322	Assert(VMMRZCallRing3IsEnabled(pVCpu));
11323	Assert( pVmxTransient->fWasGuestDebugStateActive == false
11324	\|\| pVmxTransient->fWasHyperDebugStateActive == false);
11325	return;
11326	}
11327	}
11328	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
11329	else if (pVmxTransient->fIsNestedGuest)
11330	AssertMsgFailed(("VMLAUNCH/VMRESUME failed but shouldn't happen when VMLAUNCH/VMRESUME was emulated in IEM!\n"));
11331	#endif
11332	else
11333	Log4Func(("VM-entry failure: rcVMRun=%Rrc fVMEntryFailed=%RTbool\n", rcVMRun, pVmxTransient->fVMEntryFailed));
11334
11335	VMMRZCallRing3Enable(pVCpu);
11336	}
11337
11338
11339	/**
11340	* Runs the guest code using hardware-assisted VMX the normal way.
11341	*
11342	* @returns VBox status code.
11343	* @param pVCpu The cross context virtual CPU structure.
11344	* @param pcLoops Pointer to the number of executed loops.
11345	*/
11346	static VBOXSTRICTRC hmR0VmxRunGuestCodeNormal(PVMCPUCC pVCpu, uint32_t *pcLoops)
11347	{
11348	uint32_t const cMaxResumeLoops = pVCpu->CTX_SUFF(pVM)->hmr0.s.cMaxResumeLoops;
11349	Assert(pcLoops);
11350	Assert(*pcLoops <= cMaxResumeLoops);
11351	Assert(!CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx));
11352
11353	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
11354	/*
11355	* Switch to the guest VMCS as we may have transitioned from executing the nested-guest
11356	* without leaving ring-0. Otherwise, if we came from ring-3 we would have loaded the
11357	* guest VMCS while entering the VMX ring-0 session.
11358	*/
11359	if (pVCpu->hmr0.s.vmx.fSwitchedToNstGstVmcs)
11360	{
11361	int rc = hmR0VmxSwitchToGstOrNstGstVmcs(pVCpu, false /* fSwitchToNstGstVmcs */);
11362	if (RT_SUCCESS(rc))
11363	{ /* likely */ }
11364	else
11365	{
11366	LogRelFunc(("Failed to switch to the guest VMCS. rc=%Rrc\n", rc));
11367	return rc;
11368	}
11369	}
11370	#endif
11371
11372	VMXTRANSIENT VmxTransient;
11373	RT_ZERO(VmxTransient);
11374	VmxTransient.pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
11375
11376	/* Paranoia. */
11377	Assert(VmxTransient.pVmcsInfo == &pVCpu->hmr0.s.vmx.VmcsInfo);
11378
11379	VBOXSTRICTRC rcStrict = VERR_INTERNAL_ERROR_5;
11380	for (;;)
11381	{
11382	Assert(!HMR0SuspendPending());
11383	HMVMX_ASSERT_CPU_SAFE(pVCpu);
11384	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
11385
11386	/*
11387	* Preparatory work for running nested-guest code, this may force us to
11388	* return to ring-3.
11389	*
11390	* Warning! This bugger disables interrupts on VINF_SUCCESS!
11391	*/
11392	rcStrict = hmR0VmxPreRunGuest(pVCpu, &VmxTransient, false /* fStepping */);
11393	if (rcStrict != VINF_SUCCESS)
11394	break;
11395
11396	/* Interrupts are disabled at this point! */
11397	hmR0VmxPreRunGuestCommitted(pVCpu, &VmxTransient);
11398	int rcRun = hmR0VmxRunGuest(pVCpu, &VmxTransient);
11399	hmR0VmxPostRunGuest(pVCpu, &VmxTransient, rcRun);
11400	/* Interrupts are re-enabled at this point! */
11401
11402	/*
11403	* Check for errors with running the VM (VMLAUNCH/VMRESUME).
11404	*/
11405	if (RT_SUCCESS(rcRun))
11406	{ /* very likely */ }
11407	else
11408	{
11409	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatPreExit, x);
11410	hmR0VmxReportWorldSwitchError(pVCpu, rcRun, &VmxTransient);
11411	return rcRun;
11412	}
11413
11414	/*
11415	* Profile the VM-exit.
11416	*/
11417	AssertMsg(VmxTransient.uExitReason <= VMX_EXIT_MAX, ("%#x\n", VmxTransient.uExitReason));
11418	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll);
11419	STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[VmxTransient.uExitReason & MASK_EXITREASON_STAT]);
11420	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatPreExit, &pVCpu->hm.s.StatExitHandling, x);
11421	HMVMX_START_EXIT_DISPATCH_PROF();
11422
11423	VBOXVMM_R0_HMVMX_VMEXIT_NOCTX(pVCpu, &pVCpu->cpum.GstCtx, VmxTransient.uExitReason);
11424
11425	/*
11426	* Handle the VM-exit.
11427	*/
11428	#ifdef HMVMX_USE_FUNCTION_TABLE
11429	rcStrict = g_aVMExitHandlers[VmxTransient.uExitReason].pfn(pVCpu, &VmxTransient);
11430	#else
11431	rcStrict = hmR0VmxHandleExit(pVCpu, &VmxTransient);
11432	#endif
11433	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitHandling, x);
11434	if (rcStrict == VINF_SUCCESS)
11435	{
11436	if (++(*pcLoops) <= cMaxResumeLoops)
11437	continue;
11438	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
11439	rcStrict = VINF_EM_RAW_INTERRUPT;
11440	}
11441	break;
11442	}
11443
11444	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
11445	return rcStrict;
11446	}
11447
11448
11449	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
11450	/**
11451	* Runs the nested-guest code using hardware-assisted VMX.
11452	*
11453	* @returns VBox status code.
11454	* @param pVCpu The cross context virtual CPU structure.
11455	* @param pcLoops Pointer to the number of executed loops.
11456	*
11457	* @sa hmR0VmxRunGuestCodeNormal.
11458	*/
11459	static VBOXSTRICTRC hmR0VmxRunGuestCodeNested(PVMCPUCC pVCpu, uint32_t *pcLoops)
11460	{
11461	uint32_t const cMaxResumeLoops = pVCpu->CTX_SUFF(pVM)->hmr0.s.cMaxResumeLoops;
11462	Assert(pcLoops);
11463	Assert(*pcLoops <= cMaxResumeLoops);
11464	Assert(CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx));
11465
11466	/*
11467	* Switch to the nested-guest VMCS as we may have transitioned from executing the
11468	* guest without leaving ring-0. Otherwise, if we came from ring-3 we would have
11469	* loaded the nested-guest VMCS while entering the VMX ring-0 session.
11470	*/
11471	if (!pVCpu->hmr0.s.vmx.fSwitchedToNstGstVmcs)
11472	{
11473	int rc = hmR0VmxSwitchToGstOrNstGstVmcs(pVCpu, true /* fSwitchToNstGstVmcs */);
11474	if (RT_SUCCESS(rc))
11475	{ /* likely */ }
11476	else
11477	{
11478	LogRelFunc(("Failed to switch to the nested-guest VMCS. rc=%Rrc\n", rc));
11479	return rc;
11480	}
11481	}
11482
11483	VMXTRANSIENT VmxTransient;
11484	RT_ZERO(VmxTransient);
11485	VmxTransient.pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
11486	VmxTransient.fIsNestedGuest = true;
11487
11488	/* Paranoia. */
11489	Assert(VmxTransient.pVmcsInfo == &pVCpu->hmr0.s.vmx.VmcsInfoNstGst);
11490
11491	VBOXSTRICTRC rcStrict = VERR_INTERNAL_ERROR_5;
11492	for (;;)
11493	{
11494	Assert(!HMR0SuspendPending());
11495	HMVMX_ASSERT_CPU_SAFE(pVCpu);
11496	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
11497
11498	/*
11499	* Preparatory work for running guest code, this may force us to
11500	* return to ring-3.
11501	*
11502	* Warning! This bugger disables interrupts on VINF_SUCCESS!
11503	*/
11504	rcStrict = hmR0VmxPreRunGuest(pVCpu, &VmxTransient, false /* fStepping */);
11505	if (rcStrict != VINF_SUCCESS)
11506	break;
11507
11508	/* Interrupts are disabled at this point! */
11509	hmR0VmxPreRunGuestCommitted(pVCpu, &VmxTransient);
11510	int rcRun = hmR0VmxRunGuest(pVCpu, &VmxTransient);
11511	hmR0VmxPostRunGuest(pVCpu, &VmxTransient, rcRun);
11512	/* Interrupts are re-enabled at this point! */
11513
11514	/*
11515	* Check for errors with running the VM (VMLAUNCH/VMRESUME).
11516	*/
11517	if (RT_SUCCESS(rcRun))
11518	{ /* very likely */ }
11519	else
11520	{
11521	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatPreExit, x);
11522	hmR0VmxReportWorldSwitchError(pVCpu, rcRun, &VmxTransient);
11523	return rcRun;
11524	}
11525
11526	/*
11527	* Profile the VM-exit.
11528	*/
11529	AssertMsg(VmxTransient.uExitReason <= VMX_EXIT_MAX, ("%#x\n", VmxTransient.uExitReason));
11530	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll);
11531	STAM_COUNTER_INC(&pVCpu->hm.s.StatNestedExitAll);
11532	STAM_COUNTER_INC(&pVCpu->hm.s.paStatNestedExitReasonR0[VmxTransient.uExitReason & MASK_EXITREASON_STAT]);
11533	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatPreExit, &pVCpu->hm.s.StatExitHandling, x);
11534	HMVMX_START_EXIT_DISPATCH_PROF();
11535
11536	VBOXVMM_R0_HMVMX_VMEXIT_NOCTX(pVCpu, &pVCpu->cpum.GstCtx, VmxTransient.uExitReason);
11537
11538	/*
11539	* Handle the VM-exit.
11540	*/
11541	rcStrict = hmR0VmxHandleExitNested(pVCpu, &VmxTransient);
11542	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitHandling, x);
11543	if (rcStrict == VINF_SUCCESS)
11544	{
11545	if (!CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
11546	{
11547	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchNstGstVmexit);
11548	rcStrict = VINF_VMX_VMEXIT;
11549	}
11550	else
11551	{
11552	if (++(*pcLoops) <= cMaxResumeLoops)
11553	continue;
11554	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
11555	rcStrict = VINF_EM_RAW_INTERRUPT;
11556	}
11557	}
11558	else
11559	Assert(rcStrict != VINF_VMX_VMEXIT);
11560	break;
11561	}
11562
11563	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
11564	return rcStrict;
11565	}
11566	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
11567
11568
11569	/** @name Execution loop for single stepping, DBGF events and expensive Dtrace
11570	* probes.
11571	*
11572	* The following few functions and associated structure contains the bloat
11573	* necessary for providing detailed debug events and dtrace probes as well as
11574	* reliable host side single stepping. This works on the principle of
11575	* "subclassing" the normal execution loop and workers. We replace the loop
11576	* method completely and override selected helpers to add necessary adjustments
11577	* to their core operation.
11578	*
11579	* The goal is to keep the "parent" code lean and mean, so as not to sacrifice
11580	* any performance for debug and analysis features.
11581	*
11582	* @{
11583	*/
11584
11585	/**
11586	* Transient per-VCPU debug state of VMCS and related info. we save/restore in
11587	* the debug run loop.
11588	*/
11589	typedef struct VMXRUNDBGSTATE
11590	{
11591	/** The RIP we started executing at. This is for detecting that we stepped. */
11592	uint64_t uRipStart;
11593	/** The CS we started executing with. */
11594	uint16_t uCsStart;
11595
11596	/** Whether we've actually modified the 1st execution control field. */
11597	bool fModifiedProcCtls : 1;
11598	/** Whether we've actually modified the 2nd execution control field. */
11599	bool fModifiedProcCtls2 : 1;
11600	/** Whether we've actually modified the exception bitmap. */
11601	bool fModifiedXcptBitmap : 1;
11602
11603	/** We desire the modified the CR0 mask to be cleared. */
11604	bool fClearCr0Mask : 1;
11605	/** We desire the modified the CR4 mask to be cleared. */
11606	bool fClearCr4Mask : 1;
11607	/** Stuff we need in VMX_VMCS32_CTRL_PROC_EXEC. */
11608	uint32_t fCpe1Extra;
11609	/** Stuff we do not want in VMX_VMCS32_CTRL_PROC_EXEC. */
11610	uint32_t fCpe1Unwanted;
11611	/** Stuff we need in VMX_VMCS32_CTRL_PROC_EXEC2. */
11612	uint32_t fCpe2Extra;
11613	/** Extra stuff we need in VMX_VMCS32_CTRL_EXCEPTION_BITMAP. */
11614	uint32_t bmXcptExtra;
11615	/** The sequence number of the Dtrace provider settings the state was
11616	* configured against. */
11617	uint32_t uDtraceSettingsSeqNo;
11618	/** VM-exits to check (one bit per VM-exit). */
11619	uint32_t bmExitsToCheck[3];
11620
11621	/** The initial VMX_VMCS32_CTRL_PROC_EXEC value (helps with restore). */
11622	uint32_t fProcCtlsInitial;
11623	/** The initial VMX_VMCS32_CTRL_PROC_EXEC2 value (helps with restore). */
11624	uint32_t fProcCtls2Initial;
11625	/** The initial VMX_VMCS32_CTRL_EXCEPTION_BITMAP value (helps with restore). */
11626	uint32_t bmXcptInitial;
11627	} VMXRUNDBGSTATE;
11628	AssertCompileMemberSize(VMXRUNDBGSTATE, bmExitsToCheck, (VMX_EXIT_MAX + 1 + 31) / 32 * 4);
11629	typedef VMXRUNDBGSTATE *PVMXRUNDBGSTATE;
11630
11631
11632	/**
11633	* Initializes the VMXRUNDBGSTATE structure.
11634	*
11635	* @param pVCpu The cross context virtual CPU structure of the
11636	* calling EMT.
11637	* @param pVmxTransient The VMX-transient structure.
11638	* @param pDbgState The debug state to initialize.
11639	*/
11640	static void hmR0VmxRunDebugStateInit(PVMCPUCC pVCpu, PCVMXTRANSIENT pVmxTransient, PVMXRUNDBGSTATE pDbgState)
11641	{
11642	pDbgState->uRipStart = pVCpu->cpum.GstCtx.rip;
11643	pDbgState->uCsStart = pVCpu->cpum.GstCtx.cs.Sel;
11644
11645	pDbgState->fModifiedProcCtls = false;
11646	pDbgState->fModifiedProcCtls2 = false;
11647	pDbgState->fModifiedXcptBitmap = false;
11648	pDbgState->fClearCr0Mask = false;
11649	pDbgState->fClearCr4Mask = false;
11650	pDbgState->fCpe1Extra = 0;
11651	pDbgState->fCpe1Unwanted = 0;
11652	pDbgState->fCpe2Extra = 0;
11653	pDbgState->bmXcptExtra = 0;
11654	pDbgState->fProcCtlsInitial = pVmxTransient->pVmcsInfo->u32ProcCtls;
11655	pDbgState->fProcCtls2Initial = pVmxTransient->pVmcsInfo->u32ProcCtls2;
11656	pDbgState->bmXcptInitial = pVmxTransient->pVmcsInfo->u32XcptBitmap;
11657	}
11658
11659
11660	/**
11661	* Updates the VMSC fields with changes requested by @a pDbgState.
11662	*
11663	* This is performed after hmR0VmxPreRunGuestDebugStateUpdate as well
11664	* immediately before executing guest code, i.e. when interrupts are disabled.
11665	* We don't check status codes here as we cannot easily assert or return in the
11666	* latter case.
11667	*
11668	* @param pVCpu The cross context virtual CPU structure.
11669	* @param pVmxTransient The VMX-transient structure.
11670	* @param pDbgState The debug state.
11671	*/
11672	static void hmR0VmxPreRunGuestDebugStateApply(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, PVMXRUNDBGSTATE pDbgState)
11673	{
11674	/*
11675	* Ensure desired flags in VMCS control fields are set.
11676	* (Ignoring write failure here, as we're committed and it's just debug extras.)
11677	*
11678	* Note! We load the shadow CR0 & CR4 bits when we flag the clearing, so
11679	* there should be no stale data in pCtx at this point.
11680	*/
11681	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
11682	if ( (pVmcsInfo->u32ProcCtls & pDbgState->fCpe1Extra) != pDbgState->fCpe1Extra
11683	\|\| (pVmcsInfo->u32ProcCtls & pDbgState->fCpe1Unwanted))
11684	{
11685	pVmcsInfo->u32ProcCtls \|= pDbgState->fCpe1Extra;
11686	pVmcsInfo->u32ProcCtls &= ~pDbgState->fCpe1Unwanted;
11687	VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
11688	Log6Func(("VMX_VMCS32_CTRL_PROC_EXEC: %#RX32\n", pVmcsInfo->u32ProcCtls));
11689	pDbgState->fModifiedProcCtls = true;
11690	}
11691
11692	if ((pVmcsInfo->u32ProcCtls2 & pDbgState->fCpe2Extra) != pDbgState->fCpe2Extra)
11693	{
11694	pVmcsInfo->u32ProcCtls2 \|= pDbgState->fCpe2Extra;
11695	VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, pVmcsInfo->u32ProcCtls2);
11696	Log6Func(("VMX_VMCS32_CTRL_PROC_EXEC2: %#RX32\n", pVmcsInfo->u32ProcCtls2));
11697	pDbgState->fModifiedProcCtls2 = true;
11698	}
11699
11700	if ((pVmcsInfo->u32XcptBitmap & pDbgState->bmXcptExtra) != pDbgState->bmXcptExtra)
11701	{
11702	pVmcsInfo->u32XcptBitmap \|= pDbgState->bmXcptExtra;
11703	VMXWriteVmcs32(VMX_VMCS32_CTRL_EXCEPTION_BITMAP, pVmcsInfo->u32XcptBitmap);
11704	Log6Func(("VMX_VMCS32_CTRL_EXCEPTION_BITMAP: %#RX32\n", pVmcsInfo->u32XcptBitmap));
11705	pDbgState->fModifiedXcptBitmap = true;
11706	}
11707
11708	if (pDbgState->fClearCr0Mask && pVmcsInfo->u64Cr0Mask != 0)
11709	{
11710	pVmcsInfo->u64Cr0Mask = 0;
11711	VMXWriteVmcsNw(VMX_VMCS_CTRL_CR0_MASK, 0);
11712	Log6Func(("VMX_VMCS_CTRL_CR0_MASK: 0\n"));
11713	}
11714
11715	if (pDbgState->fClearCr4Mask && pVmcsInfo->u64Cr4Mask != 0)
11716	{
11717	pVmcsInfo->u64Cr4Mask = 0;
11718	VMXWriteVmcsNw(VMX_VMCS_CTRL_CR4_MASK, 0);
11719	Log6Func(("VMX_VMCS_CTRL_CR4_MASK: 0\n"));
11720	}
11721
11722	NOREF(pVCpu);
11723	}
11724
11725
11726	/**
11727	* Restores VMCS fields that were changed by hmR0VmxPreRunGuestDebugStateApply for
11728	* re-entry next time around.
11729	*
11730	* @returns Strict VBox status code (i.e. informational status codes too).
11731	* @param pVCpu The cross context virtual CPU structure.
11732	* @param pVmxTransient The VMX-transient structure.
11733	* @param pDbgState The debug state.
11734	* @param rcStrict The return code from executing the guest using single
11735	* stepping.
11736	*/
11737	static VBOXSTRICTRC hmR0VmxRunDebugStateRevert(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, PVMXRUNDBGSTATE pDbgState,
11738	VBOXSTRICTRC rcStrict)
11739	{
11740	/*
11741	* Restore VM-exit control settings as we may not reenter this function the
11742	* next time around.
11743	*/
11744	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
11745
11746	/* We reload the initial value, trigger what we can of recalculations the
11747	next time around. From the looks of things, that's all that's required atm. */
11748	if (pDbgState->fModifiedProcCtls)
11749	{
11750	if (!(pDbgState->fProcCtlsInitial & VMX_PROC_CTLS_MOV_DR_EXIT) && CPUMIsHyperDebugStateActive(pVCpu))
11751	pDbgState->fProcCtlsInitial \|= VMX_PROC_CTLS_MOV_DR_EXIT; /* Avoid assertion in hmR0VmxLeave */
11752	int rc2 = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pDbgState->fProcCtlsInitial);
11753	AssertRC(rc2);
11754	pVmcsInfo->u32ProcCtls = pDbgState->fProcCtlsInitial;
11755	}
11756
11757	/* We're currently the only ones messing with this one, so just restore the
11758	cached value and reload the field. */
11759	if ( pDbgState->fModifiedProcCtls2
11760	&& pVmcsInfo->u32ProcCtls2 != pDbgState->fProcCtls2Initial)
11761	{
11762	int rc2 = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC2, pDbgState->fProcCtls2Initial);
11763	AssertRC(rc2);
11764	pVmcsInfo->u32ProcCtls2 = pDbgState->fProcCtls2Initial;
11765	}
11766
11767	/* If we've modified the exception bitmap, we restore it and trigger
11768	reloading and partial recalculation the next time around. */
11769	if (pDbgState->fModifiedXcptBitmap)
11770	pVmcsInfo->u32XcptBitmap = pDbgState->bmXcptInitial;
11771
11772	return rcStrict;
11773	}
11774
11775
11776	/**
11777	* Configures VM-exit controls for current DBGF and DTrace settings.
11778	*
11779	* This updates @a pDbgState and the VMCS execution control fields to reflect
11780	* the necessary VM-exits demanded by DBGF and DTrace.
11781	*
11782	* @param pVCpu The cross context virtual CPU structure.
11783	* @param pVmxTransient The VMX-transient structure. May update
11784	* fUpdatedTscOffsettingAndPreemptTimer.
11785	* @param pDbgState The debug state.
11786	*/
11787	static void hmR0VmxPreRunGuestDebugStateUpdate(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, PVMXRUNDBGSTATE pDbgState)
11788	{
11789	/*
11790	* Take down the dtrace serial number so we can spot changes.
11791	*/
11792	pDbgState->uDtraceSettingsSeqNo = VBOXVMM_GET_SETTINGS_SEQ_NO();
11793	ASMCompilerBarrier();
11794
11795	/*
11796	* We'll rebuild most of the middle block of data members (holding the
11797	* current settings) as we go along here, so start by clearing it all.
11798	*/
11799	pDbgState->bmXcptExtra = 0;
11800	pDbgState->fCpe1Extra = 0;
11801	pDbgState->fCpe1Unwanted = 0;
11802	pDbgState->fCpe2Extra = 0;
11803	for (unsigned i = 0; i < RT_ELEMENTS(pDbgState->bmExitsToCheck); i++)
11804	pDbgState->bmExitsToCheck[i] = 0;
11805
11806	/*
11807	* Software interrupts (INT XXh) - no idea how to trigger these...
11808	*/
11809	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
11810	if ( DBGF_IS_EVENT_ENABLED(pVM, DBGFEVENT_INTERRUPT_SOFTWARE)
11811	\|\| VBOXVMM_INT_SOFTWARE_ENABLED())
11812	{
11813	ASMBitSet(pDbgState->bmExitsToCheck, VMX_EXIT_XCPT_OR_NMI);
11814	}
11815
11816	/*
11817	* INT3 breakpoints - triggered by #BP exceptions.
11818	*/
11819	if (pVM->dbgf.ro.cEnabledInt3Breakpoints > 0)
11820	pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_BP);
11821
11822	/*
11823	* Exception bitmap and XCPT events+probes.
11824	*/
11825	for (int iXcpt = 0; iXcpt < (DBGFEVENT_XCPT_LAST - DBGFEVENT_XCPT_FIRST + 1); iXcpt++)
11826	if (DBGF_IS_EVENT_ENABLED(pVM, (DBGFEVENTTYPE)(DBGFEVENT_XCPT_FIRST + iXcpt)))
11827	pDbgState->bmXcptExtra \|= RT_BIT_32(iXcpt);
11828
11829	if (VBOXVMM_XCPT_DE_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_DE);
11830	if (VBOXVMM_XCPT_DB_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_DB);
11831	if (VBOXVMM_XCPT_BP_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_BP);
11832	if (VBOXVMM_XCPT_OF_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_OF);
11833	if (VBOXVMM_XCPT_BR_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_BR);
11834	if (VBOXVMM_XCPT_UD_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_UD);
11835	if (VBOXVMM_XCPT_NM_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_NM);
11836	if (VBOXVMM_XCPT_DF_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_DF);
11837	if (VBOXVMM_XCPT_TS_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_TS);
11838	if (VBOXVMM_XCPT_NP_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_NP);
11839	if (VBOXVMM_XCPT_SS_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_SS);
11840	if (VBOXVMM_XCPT_GP_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_GP);
11841	if (VBOXVMM_XCPT_PF_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_PF);
11842	if (VBOXVMM_XCPT_MF_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_MF);
11843	if (VBOXVMM_XCPT_AC_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_AC);
11844	if (VBOXVMM_XCPT_XF_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_XF);
11845	if (VBOXVMM_XCPT_VE_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_VE);
11846	if (VBOXVMM_XCPT_SX_ENABLED()) pDbgState->bmXcptExtra \|= RT_BIT_32(X86_XCPT_SX);
11847
11848	if (pDbgState->bmXcptExtra)
11849	ASMBitSet(pDbgState->bmExitsToCheck, VMX_EXIT_XCPT_OR_NMI);
11850
11851	/*
11852	* Process events and probes for VM-exits, making sure we get the wanted VM-exits.
11853	*
11854	* Note! This is the reverse of what hmR0VmxHandleExitDtraceEvents does.
11855	* So, when adding/changing/removing please don't forget to update it.
11856	*
11857	* Some of the macros are picking up local variables to save horizontal space,
11858	* (being able to see it in a table is the lesser evil here).
11859	*/
11860	#define IS_EITHER_ENABLED(a_pVM, a_EventSubName) \
11861	( DBGF_IS_EVENT_ENABLED(a_pVM, RT_CONCAT(DBGFEVENT_, a_EventSubName)) \
11862	\|\| RT_CONCAT3(VBOXVMM_, a_EventSubName, _ENABLED)() )
11863	#define SET_ONLY_XBM_IF_EITHER_EN(a_EventSubName, a_uExit) \
11864	if (IS_EITHER_ENABLED(pVM, a_EventSubName)) \
11865	{ AssertCompile((unsigned)(a_uExit) < sizeof(pDbgState->bmExitsToCheck) * 8); \
11866	ASMBitSet((pDbgState)->bmExitsToCheck, a_uExit); \
11867	} else do { } while (0)
11868	#define SET_CPE1_XBM_IF_EITHER_EN(a_EventSubName, a_uExit, a_fCtrlProcExec) \
11869	if (IS_EITHER_ENABLED(pVM, a_EventSubName)) \
11870	{ \
11871	(pDbgState)->fCpe1Extra \|= (a_fCtrlProcExec); \
11872	AssertCompile((unsigned)(a_uExit) < sizeof(pDbgState->bmExitsToCheck) * 8); \
11873	ASMBitSet((pDbgState)->bmExitsToCheck, a_uExit); \
11874	} else do { } while (0)
11875	#define SET_CPEU_XBM_IF_EITHER_EN(a_EventSubName, a_uExit, a_fUnwantedCtrlProcExec) \
11876	if (IS_EITHER_ENABLED(pVM, a_EventSubName)) \
11877	{ \
11878	(pDbgState)->fCpe1Unwanted \|= (a_fUnwantedCtrlProcExec); \
11879	AssertCompile((unsigned)(a_uExit) < sizeof(pDbgState->bmExitsToCheck) * 8); \
11880	ASMBitSet((pDbgState)->bmExitsToCheck, a_uExit); \
11881	} else do { } while (0)
11882	#define SET_CPE2_XBM_IF_EITHER_EN(a_EventSubName, a_uExit, a_fCtrlProcExec2) \
11883	if (IS_EITHER_ENABLED(pVM, a_EventSubName)) \
11884	{ \
11885	(pDbgState)->fCpe2Extra \|= (a_fCtrlProcExec2); \
11886	AssertCompile((unsigned)(a_uExit) < sizeof(pDbgState->bmExitsToCheck) * 8); \
11887	ASMBitSet((pDbgState)->bmExitsToCheck, a_uExit); \
11888	} else do { } while (0)
11889
11890	SET_ONLY_XBM_IF_EITHER_EN(EXIT_TASK_SWITCH, VMX_EXIT_TASK_SWITCH); /* unconditional */
11891	SET_ONLY_XBM_IF_EITHER_EN(EXIT_VMX_EPT_VIOLATION, VMX_EXIT_EPT_VIOLATION); /* unconditional */
11892	SET_ONLY_XBM_IF_EITHER_EN(EXIT_VMX_EPT_MISCONFIG, VMX_EXIT_EPT_MISCONFIG); /* unconditional (unless #VE) */
11893	SET_ONLY_XBM_IF_EITHER_EN(EXIT_VMX_VAPIC_ACCESS, VMX_EXIT_APIC_ACCESS); /* feature dependent, nothing to enable here */
11894	SET_ONLY_XBM_IF_EITHER_EN(EXIT_VMX_VAPIC_WRITE, VMX_EXIT_APIC_WRITE); /* feature dependent, nothing to enable here */
11895
11896	SET_ONLY_XBM_IF_EITHER_EN(INSTR_CPUID, VMX_EXIT_CPUID); /* unconditional */
11897	SET_ONLY_XBM_IF_EITHER_EN( EXIT_CPUID, VMX_EXIT_CPUID);
11898	SET_ONLY_XBM_IF_EITHER_EN(INSTR_GETSEC, VMX_EXIT_GETSEC); /* unconditional */
11899	SET_ONLY_XBM_IF_EITHER_EN( EXIT_GETSEC, VMX_EXIT_GETSEC);
11900	SET_CPE1_XBM_IF_EITHER_EN(INSTR_HALT, VMX_EXIT_HLT, VMX_PROC_CTLS_HLT_EXIT); /* paranoia */
11901	SET_ONLY_XBM_IF_EITHER_EN( EXIT_HALT, VMX_EXIT_HLT);
11902	SET_ONLY_XBM_IF_EITHER_EN(INSTR_INVD, VMX_EXIT_INVD); /* unconditional */
11903	SET_ONLY_XBM_IF_EITHER_EN( EXIT_INVD, VMX_EXIT_INVD);
11904	SET_CPE1_XBM_IF_EITHER_EN(INSTR_INVLPG, VMX_EXIT_INVLPG, VMX_PROC_CTLS_INVLPG_EXIT);
11905	SET_ONLY_XBM_IF_EITHER_EN( EXIT_INVLPG, VMX_EXIT_INVLPG);
11906	SET_CPE1_XBM_IF_EITHER_EN(INSTR_RDPMC, VMX_EXIT_RDPMC, VMX_PROC_CTLS_RDPMC_EXIT);
11907	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RDPMC, VMX_EXIT_RDPMC);
11908	SET_CPE1_XBM_IF_EITHER_EN(INSTR_RDTSC, VMX_EXIT_RDTSC, VMX_PROC_CTLS_RDTSC_EXIT);
11909	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RDTSC, VMX_EXIT_RDTSC);
11910	SET_ONLY_XBM_IF_EITHER_EN(INSTR_RSM, VMX_EXIT_RSM); /* unconditional */
11911	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RSM, VMX_EXIT_RSM);
11912	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMM_CALL, VMX_EXIT_VMCALL); /* unconditional */
11913	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMM_CALL, VMX_EXIT_VMCALL);
11914	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMCLEAR, VMX_EXIT_VMCLEAR); /* unconditional */
11915	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMCLEAR, VMX_EXIT_VMCLEAR);
11916	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMLAUNCH, VMX_EXIT_VMLAUNCH); /* unconditional */
11917	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMLAUNCH, VMX_EXIT_VMLAUNCH);
11918	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMPTRLD, VMX_EXIT_VMPTRLD); /* unconditional */
11919	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMPTRLD, VMX_EXIT_VMPTRLD);
11920	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMPTRST, VMX_EXIT_VMPTRST); /* unconditional */
11921	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMPTRST, VMX_EXIT_VMPTRST);
11922	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMREAD, VMX_EXIT_VMREAD); /* unconditional */
11923	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMREAD, VMX_EXIT_VMREAD);
11924	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMRESUME, VMX_EXIT_VMRESUME); /* unconditional */
11925	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMRESUME, VMX_EXIT_VMRESUME);
11926	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMWRITE, VMX_EXIT_VMWRITE); /* unconditional */
11927	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMWRITE, VMX_EXIT_VMWRITE);
11928	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMXOFF, VMX_EXIT_VMXOFF); /* unconditional */
11929	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMXOFF, VMX_EXIT_VMXOFF);
11930	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMXON, VMX_EXIT_VMXON); /* unconditional */
11931	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMXON, VMX_EXIT_VMXON);
11932
11933	if ( IS_EITHER_ENABLED(pVM, INSTR_CRX_READ)
11934	\|\| IS_EITHER_ENABLED(pVM, INSTR_CRX_WRITE))
11935	{
11936	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR4
11937	\| CPUMCTX_EXTRN_APIC_TPR);
11938	AssertRC(rc);
11939
11940	#if 0 /** @todo fix me */
11941	pDbgState->fClearCr0Mask = true;
11942	pDbgState->fClearCr4Mask = true;
11943	#endif
11944	if (IS_EITHER_ENABLED(pVM, INSTR_CRX_READ))
11945	pDbgState->fCpe1Extra \|= VMX_PROC_CTLS_CR3_STORE_EXIT \| VMX_PROC_CTLS_CR8_STORE_EXIT;
11946	if (IS_EITHER_ENABLED(pVM, INSTR_CRX_WRITE))
11947	pDbgState->fCpe1Extra \|= VMX_PROC_CTLS_CR3_LOAD_EXIT \| VMX_PROC_CTLS_CR8_LOAD_EXIT;
11948	pDbgState->fCpe1Unwanted \|= VMX_PROC_CTLS_USE_TPR_SHADOW; /* risky? */
11949	/* Note! We currently don't use VMX_VMCS32_CTRL_CR3_TARGET_COUNT. It would
11950	require clearing here and in the loop if we start using it. */
11951	ASMBitSet(pDbgState->bmExitsToCheck, VMX_EXIT_MOV_CRX);
11952	}
11953	else
11954	{
11955	if (pDbgState->fClearCr0Mask)
11956	{
11957	pDbgState->fClearCr0Mask = false;
11958	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR0);
11959	}
11960	if (pDbgState->fClearCr4Mask)
11961	{
11962	pDbgState->fClearCr4Mask = false;
11963	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR4);
11964	}
11965	}
11966	SET_ONLY_XBM_IF_EITHER_EN( EXIT_CRX_READ, VMX_EXIT_MOV_CRX);
11967	SET_ONLY_XBM_IF_EITHER_EN( EXIT_CRX_WRITE, VMX_EXIT_MOV_CRX);
11968
11969	if ( IS_EITHER_ENABLED(pVM, INSTR_DRX_READ)
11970	\|\| IS_EITHER_ENABLED(pVM, INSTR_DRX_WRITE))
11971	{
11972	/** @todo later, need to fix handler as it assumes this won't usually happen. */
11973	ASMBitSet(pDbgState->bmExitsToCheck, VMX_EXIT_MOV_DRX);
11974	}
11975	SET_ONLY_XBM_IF_EITHER_EN( EXIT_DRX_READ, VMX_EXIT_MOV_DRX);
11976	SET_ONLY_XBM_IF_EITHER_EN( EXIT_DRX_WRITE, VMX_EXIT_MOV_DRX);
11977
11978	SET_CPEU_XBM_IF_EITHER_EN(INSTR_RDMSR, VMX_EXIT_RDMSR, VMX_PROC_CTLS_USE_MSR_BITMAPS); /* risky clearing this? */
11979	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RDMSR, VMX_EXIT_RDMSR);
11980	SET_CPEU_XBM_IF_EITHER_EN(INSTR_WRMSR, VMX_EXIT_WRMSR, VMX_PROC_CTLS_USE_MSR_BITMAPS);
11981	SET_ONLY_XBM_IF_EITHER_EN( EXIT_WRMSR, VMX_EXIT_WRMSR);
11982	SET_CPE1_XBM_IF_EITHER_EN(INSTR_MWAIT, VMX_EXIT_MWAIT, VMX_PROC_CTLS_MWAIT_EXIT); /* paranoia */
11983	SET_ONLY_XBM_IF_EITHER_EN( EXIT_MWAIT, VMX_EXIT_MWAIT);
11984	SET_CPE1_XBM_IF_EITHER_EN(INSTR_MONITOR, VMX_EXIT_MONITOR, VMX_PROC_CTLS_MONITOR_EXIT); /* paranoia */
11985	SET_ONLY_XBM_IF_EITHER_EN( EXIT_MONITOR, VMX_EXIT_MONITOR);
11986	#if 0 /** @todo too slow, fix handler. */
11987	SET_CPE1_XBM_IF_EITHER_EN(INSTR_PAUSE, VMX_EXIT_PAUSE, VMX_PROC_CTLS_PAUSE_EXIT);
11988	#endif
11989	SET_ONLY_XBM_IF_EITHER_EN( EXIT_PAUSE, VMX_EXIT_PAUSE);
11990
11991	if ( IS_EITHER_ENABLED(pVM, INSTR_SGDT)
11992	\|\| IS_EITHER_ENABLED(pVM, INSTR_SIDT)
11993	\|\| IS_EITHER_ENABLED(pVM, INSTR_LGDT)
11994	\|\| IS_EITHER_ENABLED(pVM, INSTR_LIDT))
11995	{
11996	pDbgState->fCpe2Extra \|= VMX_PROC_CTLS2_DESC_TABLE_EXIT;
11997	ASMBitSet(pDbgState->bmExitsToCheck, VMX_EXIT_GDTR_IDTR_ACCESS);
11998	}
11999	SET_ONLY_XBM_IF_EITHER_EN( EXIT_SGDT, VMX_EXIT_GDTR_IDTR_ACCESS);
12000	SET_ONLY_XBM_IF_EITHER_EN( EXIT_SIDT, VMX_EXIT_GDTR_IDTR_ACCESS);
12001	SET_ONLY_XBM_IF_EITHER_EN( EXIT_LGDT, VMX_EXIT_GDTR_IDTR_ACCESS);
12002	SET_ONLY_XBM_IF_EITHER_EN( EXIT_LIDT, VMX_EXIT_GDTR_IDTR_ACCESS);
12003
12004	if ( IS_EITHER_ENABLED(pVM, INSTR_SLDT)
12005	\|\| IS_EITHER_ENABLED(pVM, INSTR_STR)
12006	\|\| IS_EITHER_ENABLED(pVM, INSTR_LLDT)
12007	\|\| IS_EITHER_ENABLED(pVM, INSTR_LTR))
12008	{
12009	pDbgState->fCpe2Extra \|= VMX_PROC_CTLS2_DESC_TABLE_EXIT;
12010	ASMBitSet(pDbgState->bmExitsToCheck, VMX_EXIT_LDTR_TR_ACCESS);
12011	}
12012	SET_ONLY_XBM_IF_EITHER_EN( EXIT_SLDT, VMX_EXIT_LDTR_TR_ACCESS);
12013	SET_ONLY_XBM_IF_EITHER_EN( EXIT_STR, VMX_EXIT_LDTR_TR_ACCESS);
12014	SET_ONLY_XBM_IF_EITHER_EN( EXIT_LLDT, VMX_EXIT_LDTR_TR_ACCESS);
12015	SET_ONLY_XBM_IF_EITHER_EN( EXIT_LTR, VMX_EXIT_LDTR_TR_ACCESS);
12016
12017	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_INVEPT, VMX_EXIT_INVEPT); /* unconditional */
12018	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_INVEPT, VMX_EXIT_INVEPT);
12019	SET_CPE1_XBM_IF_EITHER_EN(INSTR_RDTSCP, VMX_EXIT_RDTSCP, VMX_PROC_CTLS_RDTSC_EXIT);
12020	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RDTSCP, VMX_EXIT_RDTSCP);
12021	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_INVVPID, VMX_EXIT_INVVPID); /* unconditional */
12022	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_INVVPID, VMX_EXIT_INVVPID);
12023	SET_CPE2_XBM_IF_EITHER_EN(INSTR_WBINVD, VMX_EXIT_WBINVD, VMX_PROC_CTLS2_WBINVD_EXIT);
12024	SET_ONLY_XBM_IF_EITHER_EN( EXIT_WBINVD, VMX_EXIT_WBINVD);
12025	SET_ONLY_XBM_IF_EITHER_EN(INSTR_XSETBV, VMX_EXIT_XSETBV); /* unconditional */
12026	SET_ONLY_XBM_IF_EITHER_EN( EXIT_XSETBV, VMX_EXIT_XSETBV);
12027	SET_CPE2_XBM_IF_EITHER_EN(INSTR_RDRAND, VMX_EXIT_RDRAND, VMX_PROC_CTLS2_RDRAND_EXIT);
12028	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RDRAND, VMX_EXIT_RDRAND);
12029	SET_CPE1_XBM_IF_EITHER_EN(INSTR_VMX_INVPCID, VMX_EXIT_INVPCID, VMX_PROC_CTLS_INVLPG_EXIT);
12030	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_INVPCID, VMX_EXIT_INVPCID);
12031	SET_ONLY_XBM_IF_EITHER_EN(INSTR_VMX_VMFUNC, VMX_EXIT_VMFUNC); /* unconditional for the current setup */
12032	SET_ONLY_XBM_IF_EITHER_EN( EXIT_VMX_VMFUNC, VMX_EXIT_VMFUNC);
12033	SET_CPE2_XBM_IF_EITHER_EN(INSTR_RDSEED, VMX_EXIT_RDSEED, VMX_PROC_CTLS2_RDSEED_EXIT);
12034	SET_ONLY_XBM_IF_EITHER_EN( EXIT_RDSEED, VMX_EXIT_RDSEED);
12035	SET_ONLY_XBM_IF_EITHER_EN(INSTR_XSAVES, VMX_EXIT_XSAVES); /* unconditional (enabled by host, guest cfg) */
12036	SET_ONLY_XBM_IF_EITHER_EN(EXIT_XSAVES, VMX_EXIT_XSAVES);
12037	SET_ONLY_XBM_IF_EITHER_EN(INSTR_XRSTORS, VMX_EXIT_XRSTORS); /* unconditional (enabled by host, guest cfg) */
12038	SET_ONLY_XBM_IF_EITHER_EN( EXIT_XRSTORS, VMX_EXIT_XRSTORS);
12039
12040	#undef IS_EITHER_ENABLED
12041	#undef SET_ONLY_XBM_IF_EITHER_EN
12042	#undef SET_CPE1_XBM_IF_EITHER_EN
12043	#undef SET_CPEU_XBM_IF_EITHER_EN
12044	#undef SET_CPE2_XBM_IF_EITHER_EN
12045
12046	/*
12047	* Sanitize the control stuff.
12048	*/
12049	pDbgState->fCpe2Extra &= g_HmMsrs.u.vmx.ProcCtls2.n.allowed1;
12050	if (pDbgState->fCpe2Extra)
12051	pDbgState->fCpe1Extra \|= VMX_PROC_CTLS_USE_SECONDARY_CTLS;
12052	pDbgState->fCpe1Extra &= g_HmMsrs.u.vmx.ProcCtls.n.allowed1;
12053	pDbgState->fCpe1Unwanted &= ~g_HmMsrs.u.vmx.ProcCtls.n.allowed0;
12054	if (pVCpu->hmr0.s.fDebugWantRdTscExit != RT_BOOL(pDbgState->fCpe1Extra & VMX_PROC_CTLS_RDTSC_EXIT))
12055	{
12056	pVCpu->hmr0.s.fDebugWantRdTscExit ^= true;
12057	pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer = false;
12058	}
12059
12060	Log6(("HM: debug state: cpe1=%#RX32 cpeu=%#RX32 cpe2=%#RX32%s%s\n",
12061	pDbgState->fCpe1Extra, pDbgState->fCpe1Unwanted, pDbgState->fCpe2Extra,
12062	pDbgState->fClearCr0Mask ? " clr-cr0" : "",
12063	pDbgState->fClearCr4Mask ? " clr-cr4" : ""));
12064	}
12065
12066
12067	/**
12068	* Fires off DBGF events and dtrace probes for a VM-exit, when it's
12069	* appropriate.
12070	*
12071	* The caller has checked the VM-exit against the
12072	* VMXRUNDBGSTATE::bmExitsToCheck bitmap. The caller has checked for NMIs
12073	* already, so we don't have to do that either.
12074	*
12075	* @returns Strict VBox status code (i.e. informational status codes too).
12076	* @param pVCpu The cross context virtual CPU structure.
12077	* @param pVmxTransient The VMX-transient structure.
12078	* @param uExitReason The VM-exit reason.
12079	*
12080	* @remarks The name of this function is displayed by dtrace, so keep it short
12081	* and to the point. No longer than 33 chars long, please.
12082	*/
12083	static VBOXSTRICTRC hmR0VmxHandleExitDtraceEvents(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, uint32_t uExitReason)
12084	{
12085	/*
12086	* Translate the event into a DBGF event (enmEvent + uEventArg) and at the
12087	* same time check whether any corresponding Dtrace event is enabled (fDtrace).
12088	*
12089	* Note! This is the reverse operation of what hmR0VmxPreRunGuestDebugStateUpdate
12090	* does. Must add/change/remove both places. Same ordering, please.
12091	*
12092	* Added/removed events must also be reflected in the next section
12093	* where we dispatch dtrace events.
12094	*/
12095	bool fDtrace1 = false;
12096	bool fDtrace2 = false;
12097	DBGFEVENTTYPE enmEvent1 = DBGFEVENT_END;
12098	DBGFEVENTTYPE enmEvent2 = DBGFEVENT_END;
12099	uint32_t uEventArg = 0;
12100	#define SET_EXIT(a_EventSubName) \
12101	do { \
12102	enmEvent2 = RT_CONCAT(DBGFEVENT_EXIT_, a_EventSubName); \
12103	fDtrace2 = RT_CONCAT3(VBOXVMM_EXIT_, a_EventSubName, _ENABLED)(); \
12104	} while (0)
12105	#define SET_BOTH(a_EventSubName) \
12106	do { \
12107	enmEvent1 = RT_CONCAT(DBGFEVENT_INSTR_, a_EventSubName); \
12108	enmEvent2 = RT_CONCAT(DBGFEVENT_EXIT_, a_EventSubName); \
12109	fDtrace1 = RT_CONCAT3(VBOXVMM_INSTR_, a_EventSubName, _ENABLED)(); \
12110	fDtrace2 = RT_CONCAT3(VBOXVMM_EXIT_, a_EventSubName, _ENABLED)(); \
12111	} while (0)
12112	switch (uExitReason)
12113	{
12114	case VMX_EXIT_MTF:
12115	return hmR0VmxExitMtf(pVCpu, pVmxTransient);
12116
12117	case VMX_EXIT_XCPT_OR_NMI:
12118	{
12119	uint8_t const idxVector = VMX_EXIT_INT_INFO_VECTOR(pVmxTransient->uExitIntInfo);
12120	switch (VMX_EXIT_INT_INFO_TYPE(pVmxTransient->uExitIntInfo))
12121	{
12122	case VMX_EXIT_INT_INFO_TYPE_HW_XCPT:
12123	case VMX_EXIT_INT_INFO_TYPE_SW_XCPT:
12124	case VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT:
12125	if (idxVector <= (unsigned)(DBGFEVENT_XCPT_LAST - DBGFEVENT_XCPT_FIRST))
12126	{
12127	if (VMX_EXIT_INT_INFO_IS_ERROR_CODE_VALID(pVmxTransient->uExitIntInfo))
12128	{
12129	hmR0VmxReadExitIntErrorCodeVmcs(pVmxTransient);
12130	uEventArg = pVmxTransient->uExitIntErrorCode;
12131	}
12132	enmEvent1 = (DBGFEVENTTYPE)(DBGFEVENT_XCPT_FIRST + idxVector);
12133	switch (enmEvent1)
12134	{
12135	case DBGFEVENT_XCPT_DE: fDtrace1 = VBOXVMM_XCPT_DE_ENABLED(); break;
12136	case DBGFEVENT_XCPT_DB: fDtrace1 = VBOXVMM_XCPT_DB_ENABLED(); break;
12137	case DBGFEVENT_XCPT_BP: fDtrace1 = VBOXVMM_XCPT_BP_ENABLED(); break;
12138	case DBGFEVENT_XCPT_OF: fDtrace1 = VBOXVMM_XCPT_OF_ENABLED(); break;
12139	case DBGFEVENT_XCPT_BR: fDtrace1 = VBOXVMM_XCPT_BR_ENABLED(); break;
12140	case DBGFEVENT_XCPT_UD: fDtrace1 = VBOXVMM_XCPT_UD_ENABLED(); break;
12141	case DBGFEVENT_XCPT_NM: fDtrace1 = VBOXVMM_XCPT_NM_ENABLED(); break;
12142	case DBGFEVENT_XCPT_DF: fDtrace1 = VBOXVMM_XCPT_DF_ENABLED(); break;
12143	case DBGFEVENT_XCPT_TS: fDtrace1 = VBOXVMM_XCPT_TS_ENABLED(); break;
12144	case DBGFEVENT_XCPT_NP: fDtrace1 = VBOXVMM_XCPT_NP_ENABLED(); break;
12145	case DBGFEVENT_XCPT_SS: fDtrace1 = VBOXVMM_XCPT_SS_ENABLED(); break;
12146	case DBGFEVENT_XCPT_GP: fDtrace1 = VBOXVMM_XCPT_GP_ENABLED(); break;
12147	case DBGFEVENT_XCPT_PF: fDtrace1 = VBOXVMM_XCPT_PF_ENABLED(); break;
12148	case DBGFEVENT_XCPT_MF: fDtrace1 = VBOXVMM_XCPT_MF_ENABLED(); break;
12149	case DBGFEVENT_XCPT_AC: fDtrace1 = VBOXVMM_XCPT_AC_ENABLED(); break;
12150	case DBGFEVENT_XCPT_XF: fDtrace1 = VBOXVMM_XCPT_XF_ENABLED(); break;
12151	case DBGFEVENT_XCPT_VE: fDtrace1 = VBOXVMM_XCPT_VE_ENABLED(); break;
12152	case DBGFEVENT_XCPT_SX: fDtrace1 = VBOXVMM_XCPT_SX_ENABLED(); break;
12153	default: break;
12154	}
12155	}
12156	else
12157	AssertFailed();
12158	break;
12159
12160	case VMX_EXIT_INT_INFO_TYPE_SW_INT:
12161	uEventArg = idxVector;
12162	enmEvent1 = DBGFEVENT_INTERRUPT_SOFTWARE;
12163	fDtrace1 = VBOXVMM_INT_SOFTWARE_ENABLED();
12164	break;
12165	}
12166	break;
12167	}
12168
12169	case VMX_EXIT_TRIPLE_FAULT:
12170	enmEvent1 = DBGFEVENT_TRIPLE_FAULT;
12171	//fDtrace1 = VBOXVMM_EXIT_TRIPLE_FAULT_ENABLED();
12172	break;
12173	case VMX_EXIT_TASK_SWITCH: SET_EXIT(TASK_SWITCH); break;
12174	case VMX_EXIT_EPT_VIOLATION: SET_EXIT(VMX_EPT_VIOLATION); break;
12175	case VMX_EXIT_EPT_MISCONFIG: SET_EXIT(VMX_EPT_MISCONFIG); break;
12176	case VMX_EXIT_APIC_ACCESS: SET_EXIT(VMX_VAPIC_ACCESS); break;
12177	case VMX_EXIT_APIC_WRITE: SET_EXIT(VMX_VAPIC_WRITE); break;
12178
12179	/* Instruction specific VM-exits: */
12180	case VMX_EXIT_CPUID: SET_BOTH(CPUID); break;
12181	case VMX_EXIT_GETSEC: SET_BOTH(GETSEC); break;
12182	case VMX_EXIT_HLT: SET_BOTH(HALT); break;
12183	case VMX_EXIT_INVD: SET_BOTH(INVD); break;
12184	case VMX_EXIT_INVLPG: SET_BOTH(INVLPG); break;
12185	case VMX_EXIT_RDPMC: SET_BOTH(RDPMC); break;
12186	case VMX_EXIT_RDTSC: SET_BOTH(RDTSC); break;
12187	case VMX_EXIT_RSM: SET_BOTH(RSM); break;
12188	case VMX_EXIT_VMCALL: SET_BOTH(VMM_CALL); break;
12189	case VMX_EXIT_VMCLEAR: SET_BOTH(VMX_VMCLEAR); break;
12190	case VMX_EXIT_VMLAUNCH: SET_BOTH(VMX_VMLAUNCH); break;
12191	case VMX_EXIT_VMPTRLD: SET_BOTH(VMX_VMPTRLD); break;
12192	case VMX_EXIT_VMPTRST: SET_BOTH(VMX_VMPTRST); break;
12193	case VMX_EXIT_VMREAD: SET_BOTH(VMX_VMREAD); break;
12194	case VMX_EXIT_VMRESUME: SET_BOTH(VMX_VMRESUME); break;
12195	case VMX_EXIT_VMWRITE: SET_BOTH(VMX_VMWRITE); break;
12196	case VMX_EXIT_VMXOFF: SET_BOTH(VMX_VMXOFF); break;
12197	case VMX_EXIT_VMXON: SET_BOTH(VMX_VMXON); break;
12198	case VMX_EXIT_MOV_CRX:
12199	hmR0VmxReadExitQualVmcs(pVmxTransient);
12200	if (VMX_EXIT_QUAL_CRX_ACCESS(pVmxTransient->uExitQual) == VMX_EXIT_QUAL_CRX_ACCESS_READ)
12201	SET_BOTH(CRX_READ);
12202	else
12203	SET_BOTH(CRX_WRITE);
12204	uEventArg = VMX_EXIT_QUAL_CRX_REGISTER(pVmxTransient->uExitQual);
12205	break;
12206	case VMX_EXIT_MOV_DRX:
12207	hmR0VmxReadExitQualVmcs(pVmxTransient);
12208	if ( VMX_EXIT_QUAL_DRX_DIRECTION(pVmxTransient->uExitQual)
12209	== VMX_EXIT_QUAL_DRX_DIRECTION_READ)
12210	SET_BOTH(DRX_READ);
12211	else
12212	SET_BOTH(DRX_WRITE);
12213	uEventArg = VMX_EXIT_QUAL_DRX_REGISTER(pVmxTransient->uExitQual);
12214	break;
12215	case VMX_EXIT_RDMSR: SET_BOTH(RDMSR); break;
12216	case VMX_EXIT_WRMSR: SET_BOTH(WRMSR); break;
12217	case VMX_EXIT_MWAIT: SET_BOTH(MWAIT); break;
12218	case VMX_EXIT_MONITOR: SET_BOTH(MONITOR); break;
12219	case VMX_EXIT_PAUSE: SET_BOTH(PAUSE); break;
12220	case VMX_EXIT_GDTR_IDTR_ACCESS:
12221	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
12222	switch (RT_BF_GET(pVmxTransient->ExitInstrInfo.u, VMX_BF_XDTR_INSINFO_INSTR_ID))
12223	{
12224	case VMX_XDTR_INSINFO_II_SGDT: SET_BOTH(SGDT); break;
12225	case VMX_XDTR_INSINFO_II_SIDT: SET_BOTH(SIDT); break;
12226	case VMX_XDTR_INSINFO_II_LGDT: SET_BOTH(LGDT); break;
12227	case VMX_XDTR_INSINFO_II_LIDT: SET_BOTH(LIDT); break;
12228	}
12229	break;
12230
12231	case VMX_EXIT_LDTR_TR_ACCESS:
12232	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
12233	switch (RT_BF_GET(pVmxTransient->ExitInstrInfo.u, VMX_BF_YYTR_INSINFO_INSTR_ID))
12234	{
12235	case VMX_YYTR_INSINFO_II_SLDT: SET_BOTH(SLDT); break;
12236	case VMX_YYTR_INSINFO_II_STR: SET_BOTH(STR); break;
12237	case VMX_YYTR_INSINFO_II_LLDT: SET_BOTH(LLDT); break;
12238	case VMX_YYTR_INSINFO_II_LTR: SET_BOTH(LTR); break;
12239	}
12240	break;
12241
12242	case VMX_EXIT_INVEPT: SET_BOTH(VMX_INVEPT); break;
12243	case VMX_EXIT_RDTSCP: SET_BOTH(RDTSCP); break;
12244	case VMX_EXIT_INVVPID: SET_BOTH(VMX_INVVPID); break;
12245	case VMX_EXIT_WBINVD: SET_BOTH(WBINVD); break;
12246	case VMX_EXIT_XSETBV: SET_BOTH(XSETBV); break;
12247	case VMX_EXIT_RDRAND: SET_BOTH(RDRAND); break;
12248	case VMX_EXIT_INVPCID: SET_BOTH(VMX_INVPCID); break;
12249	case VMX_EXIT_VMFUNC: SET_BOTH(VMX_VMFUNC); break;
12250	case VMX_EXIT_RDSEED: SET_BOTH(RDSEED); break;
12251	case VMX_EXIT_XSAVES: SET_BOTH(XSAVES); break;
12252	case VMX_EXIT_XRSTORS: SET_BOTH(XRSTORS); break;
12253
12254	/* Events that aren't relevant at this point. */
12255	case VMX_EXIT_EXT_INT:
12256	case VMX_EXIT_INT_WINDOW:
12257	case VMX_EXIT_NMI_WINDOW:
12258	case VMX_EXIT_TPR_BELOW_THRESHOLD:
12259	case VMX_EXIT_PREEMPT_TIMER:
12260	case VMX_EXIT_IO_INSTR:
12261	break;
12262
12263	/* Errors and unexpected events. */
12264	case VMX_EXIT_INIT_SIGNAL:
12265	case VMX_EXIT_SIPI:
12266	case VMX_EXIT_IO_SMI:
12267	case VMX_EXIT_SMI:
12268	case VMX_EXIT_ERR_INVALID_GUEST_STATE:
12269	case VMX_EXIT_ERR_MSR_LOAD:
12270	case VMX_EXIT_ERR_MACHINE_CHECK:
12271	case VMX_EXIT_PML_FULL:
12272	case VMX_EXIT_VIRTUALIZED_EOI:
12273	break;
12274
12275	default:
12276	AssertMsgFailed(("Unexpected VM-exit=%#x\n", uExitReason));
12277	break;
12278	}
12279	#undef SET_BOTH
12280	#undef SET_EXIT
12281
12282	/*
12283	* Dtrace tracepoints go first. We do them here at once so we don't
12284	* have to copy the guest state saving and stuff a few dozen times.
12285	* Down side is that we've got to repeat the switch, though this time
12286	* we use enmEvent since the probes are a subset of what DBGF does.
12287	*/
12288	if (fDtrace1 \|\| fDtrace2)
12289	{
12290	hmR0VmxReadExitQualVmcs(pVmxTransient);
12291	hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
12292	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
12293	switch (enmEvent1)
12294	{
12295	/** @todo consider which extra parameters would be helpful for each probe. */
12296	case DBGFEVENT_END: break;
12297	case DBGFEVENT_XCPT_DE: VBOXVMM_XCPT_DE(pVCpu, pCtx); break;
12298	case DBGFEVENT_XCPT_DB: VBOXVMM_XCPT_DB(pVCpu, pCtx, pCtx->dr[6]); break;
12299	case DBGFEVENT_XCPT_BP: VBOXVMM_XCPT_BP(pVCpu, pCtx); break;
12300	case DBGFEVENT_XCPT_OF: VBOXVMM_XCPT_OF(pVCpu, pCtx); break;
12301	case DBGFEVENT_XCPT_BR: VBOXVMM_XCPT_BR(pVCpu, pCtx); break;
12302	case DBGFEVENT_XCPT_UD: VBOXVMM_XCPT_UD(pVCpu, pCtx); break;
12303	case DBGFEVENT_XCPT_NM: VBOXVMM_XCPT_NM(pVCpu, pCtx); break;
12304	case DBGFEVENT_XCPT_DF: VBOXVMM_XCPT_DF(pVCpu, pCtx); break;
12305	case DBGFEVENT_XCPT_TS: VBOXVMM_XCPT_TS(pVCpu, pCtx, uEventArg); break;
12306	case DBGFEVENT_XCPT_NP: VBOXVMM_XCPT_NP(pVCpu, pCtx, uEventArg); break;
12307	case DBGFEVENT_XCPT_SS: VBOXVMM_XCPT_SS(pVCpu, pCtx, uEventArg); break;
12308	case DBGFEVENT_XCPT_GP: VBOXVMM_XCPT_GP(pVCpu, pCtx, uEventArg); break;
12309	case DBGFEVENT_XCPT_PF: VBOXVMM_XCPT_PF(pVCpu, pCtx, uEventArg, pCtx->cr2); break;
12310	case DBGFEVENT_XCPT_MF: VBOXVMM_XCPT_MF(pVCpu, pCtx); break;
12311	case DBGFEVENT_XCPT_AC: VBOXVMM_XCPT_AC(pVCpu, pCtx); break;
12312	case DBGFEVENT_XCPT_XF: VBOXVMM_XCPT_XF(pVCpu, pCtx); break;
12313	case DBGFEVENT_XCPT_VE: VBOXVMM_XCPT_VE(pVCpu, pCtx); break;
12314	case DBGFEVENT_XCPT_SX: VBOXVMM_XCPT_SX(pVCpu, pCtx, uEventArg); break;
12315	case DBGFEVENT_INTERRUPT_SOFTWARE: VBOXVMM_INT_SOFTWARE(pVCpu, pCtx, (uint8_t)uEventArg); break;
12316	case DBGFEVENT_INSTR_CPUID: VBOXVMM_INSTR_CPUID(pVCpu, pCtx, pCtx->eax, pCtx->ecx); break;
12317	case DBGFEVENT_INSTR_GETSEC: VBOXVMM_INSTR_GETSEC(pVCpu, pCtx); break;
12318	case DBGFEVENT_INSTR_HALT: VBOXVMM_INSTR_HALT(pVCpu, pCtx); break;
12319	case DBGFEVENT_INSTR_INVD: VBOXVMM_INSTR_INVD(pVCpu, pCtx); break;
12320	case DBGFEVENT_INSTR_INVLPG: VBOXVMM_INSTR_INVLPG(pVCpu, pCtx); break;
12321	case DBGFEVENT_INSTR_RDPMC: VBOXVMM_INSTR_RDPMC(pVCpu, pCtx); break;
12322	case DBGFEVENT_INSTR_RDTSC: VBOXVMM_INSTR_RDTSC(pVCpu, pCtx); break;
12323	case DBGFEVENT_INSTR_RSM: VBOXVMM_INSTR_RSM(pVCpu, pCtx); break;
12324	case DBGFEVENT_INSTR_CRX_READ: VBOXVMM_INSTR_CRX_READ(pVCpu, pCtx, (uint8_t)uEventArg); break;
12325	case DBGFEVENT_INSTR_CRX_WRITE: VBOXVMM_INSTR_CRX_WRITE(pVCpu, pCtx, (uint8_t)uEventArg); break;
12326	case DBGFEVENT_INSTR_DRX_READ: VBOXVMM_INSTR_DRX_READ(pVCpu, pCtx, (uint8_t)uEventArg); break;
12327	case DBGFEVENT_INSTR_DRX_WRITE: VBOXVMM_INSTR_DRX_WRITE(pVCpu, pCtx, (uint8_t)uEventArg); break;
12328	case DBGFEVENT_INSTR_RDMSR: VBOXVMM_INSTR_RDMSR(pVCpu, pCtx, pCtx->ecx); break;
12329	case DBGFEVENT_INSTR_WRMSR: VBOXVMM_INSTR_WRMSR(pVCpu, pCtx, pCtx->ecx,
12330	RT_MAKE_U64(pCtx->eax, pCtx->edx)); break;
12331	case DBGFEVENT_INSTR_MWAIT: VBOXVMM_INSTR_MWAIT(pVCpu, pCtx); break;
12332	case DBGFEVENT_INSTR_MONITOR: VBOXVMM_INSTR_MONITOR(pVCpu, pCtx); break;
12333	case DBGFEVENT_INSTR_PAUSE: VBOXVMM_INSTR_PAUSE(pVCpu, pCtx); break;
12334	case DBGFEVENT_INSTR_SGDT: VBOXVMM_INSTR_SGDT(pVCpu, pCtx); break;
12335	case DBGFEVENT_INSTR_SIDT: VBOXVMM_INSTR_SIDT(pVCpu, pCtx); break;
12336	case DBGFEVENT_INSTR_LGDT: VBOXVMM_INSTR_LGDT(pVCpu, pCtx); break;
12337	case DBGFEVENT_INSTR_LIDT: VBOXVMM_INSTR_LIDT(pVCpu, pCtx); break;
12338	case DBGFEVENT_INSTR_SLDT: VBOXVMM_INSTR_SLDT(pVCpu, pCtx); break;
12339	case DBGFEVENT_INSTR_STR: VBOXVMM_INSTR_STR(pVCpu, pCtx); break;
12340	case DBGFEVENT_INSTR_LLDT: VBOXVMM_INSTR_LLDT(pVCpu, pCtx); break;
12341	case DBGFEVENT_INSTR_LTR: VBOXVMM_INSTR_LTR(pVCpu, pCtx); break;
12342	case DBGFEVENT_INSTR_RDTSCP: VBOXVMM_INSTR_RDTSCP(pVCpu, pCtx); break;
12343	case DBGFEVENT_INSTR_WBINVD: VBOXVMM_INSTR_WBINVD(pVCpu, pCtx); break;
12344	case DBGFEVENT_INSTR_XSETBV: VBOXVMM_INSTR_XSETBV(pVCpu, pCtx); break;
12345	case DBGFEVENT_INSTR_RDRAND: VBOXVMM_INSTR_RDRAND(pVCpu, pCtx); break;
12346	case DBGFEVENT_INSTR_RDSEED: VBOXVMM_INSTR_RDSEED(pVCpu, pCtx); break;
12347	case DBGFEVENT_INSTR_XSAVES: VBOXVMM_INSTR_XSAVES(pVCpu, pCtx); break;
12348	case DBGFEVENT_INSTR_XRSTORS: VBOXVMM_INSTR_XRSTORS(pVCpu, pCtx); break;
12349	case DBGFEVENT_INSTR_VMM_CALL: VBOXVMM_INSTR_VMM_CALL(pVCpu, pCtx); break;
12350	case DBGFEVENT_INSTR_VMX_VMCLEAR: VBOXVMM_INSTR_VMX_VMCLEAR(pVCpu, pCtx); break;
12351	case DBGFEVENT_INSTR_VMX_VMLAUNCH: VBOXVMM_INSTR_VMX_VMLAUNCH(pVCpu, pCtx); break;
12352	case DBGFEVENT_INSTR_VMX_VMPTRLD: VBOXVMM_INSTR_VMX_VMPTRLD(pVCpu, pCtx); break;
12353	case DBGFEVENT_INSTR_VMX_VMPTRST: VBOXVMM_INSTR_VMX_VMPTRST(pVCpu, pCtx); break;
12354	case DBGFEVENT_INSTR_VMX_VMREAD: VBOXVMM_INSTR_VMX_VMREAD(pVCpu, pCtx); break;
12355	case DBGFEVENT_INSTR_VMX_VMRESUME: VBOXVMM_INSTR_VMX_VMRESUME(pVCpu, pCtx); break;
12356	case DBGFEVENT_INSTR_VMX_VMWRITE: VBOXVMM_INSTR_VMX_VMWRITE(pVCpu, pCtx); break;
12357	case DBGFEVENT_INSTR_VMX_VMXOFF: VBOXVMM_INSTR_VMX_VMXOFF(pVCpu, pCtx); break;
12358	case DBGFEVENT_INSTR_VMX_VMXON: VBOXVMM_INSTR_VMX_VMXON(pVCpu, pCtx); break;
12359	case DBGFEVENT_INSTR_VMX_INVEPT: VBOXVMM_INSTR_VMX_INVEPT(pVCpu, pCtx); break;
12360	case DBGFEVENT_INSTR_VMX_INVVPID: VBOXVMM_INSTR_VMX_INVVPID(pVCpu, pCtx); break;
12361	case DBGFEVENT_INSTR_VMX_INVPCID: VBOXVMM_INSTR_VMX_INVPCID(pVCpu, pCtx); break;
12362	case DBGFEVENT_INSTR_VMX_VMFUNC: VBOXVMM_INSTR_VMX_VMFUNC(pVCpu, pCtx); break;
12363	default: AssertMsgFailed(("enmEvent1=%d uExitReason=%d\n", enmEvent1, uExitReason)); break;
12364	}
12365	switch (enmEvent2)
12366	{
12367	/** @todo consider which extra parameters would be helpful for each probe. */
12368	case DBGFEVENT_END: break;
12369	case DBGFEVENT_EXIT_TASK_SWITCH: VBOXVMM_EXIT_TASK_SWITCH(pVCpu, pCtx); break;
12370	case DBGFEVENT_EXIT_CPUID: VBOXVMM_EXIT_CPUID(pVCpu, pCtx, pCtx->eax, pCtx->ecx); break;
12371	case DBGFEVENT_EXIT_GETSEC: VBOXVMM_EXIT_GETSEC(pVCpu, pCtx); break;
12372	case DBGFEVENT_EXIT_HALT: VBOXVMM_EXIT_HALT(pVCpu, pCtx); break;
12373	case DBGFEVENT_EXIT_INVD: VBOXVMM_EXIT_INVD(pVCpu, pCtx); break;
12374	case DBGFEVENT_EXIT_INVLPG: VBOXVMM_EXIT_INVLPG(pVCpu, pCtx); break;
12375	case DBGFEVENT_EXIT_RDPMC: VBOXVMM_EXIT_RDPMC(pVCpu, pCtx); break;
12376	case DBGFEVENT_EXIT_RDTSC: VBOXVMM_EXIT_RDTSC(pVCpu, pCtx); break;
12377	case DBGFEVENT_EXIT_RSM: VBOXVMM_EXIT_RSM(pVCpu, pCtx); break;
12378	case DBGFEVENT_EXIT_CRX_READ: VBOXVMM_EXIT_CRX_READ(pVCpu, pCtx, (uint8_t)uEventArg); break;
12379	case DBGFEVENT_EXIT_CRX_WRITE: VBOXVMM_EXIT_CRX_WRITE(pVCpu, pCtx, (uint8_t)uEventArg); break;
12380	case DBGFEVENT_EXIT_DRX_READ: VBOXVMM_EXIT_DRX_READ(pVCpu, pCtx, (uint8_t)uEventArg); break;
12381	case DBGFEVENT_EXIT_DRX_WRITE: VBOXVMM_EXIT_DRX_WRITE(pVCpu, pCtx, (uint8_t)uEventArg); break;
12382	case DBGFEVENT_EXIT_RDMSR: VBOXVMM_EXIT_RDMSR(pVCpu, pCtx, pCtx->ecx); break;
12383	case DBGFEVENT_EXIT_WRMSR: VBOXVMM_EXIT_WRMSR(pVCpu, pCtx, pCtx->ecx,
12384	RT_MAKE_U64(pCtx->eax, pCtx->edx)); break;
12385	case DBGFEVENT_EXIT_MWAIT: VBOXVMM_EXIT_MWAIT(pVCpu, pCtx); break;
12386	case DBGFEVENT_EXIT_MONITOR: VBOXVMM_EXIT_MONITOR(pVCpu, pCtx); break;
12387	case DBGFEVENT_EXIT_PAUSE: VBOXVMM_EXIT_PAUSE(pVCpu, pCtx); break;
12388	case DBGFEVENT_EXIT_SGDT: VBOXVMM_EXIT_SGDT(pVCpu, pCtx); break;
12389	case DBGFEVENT_EXIT_SIDT: VBOXVMM_EXIT_SIDT(pVCpu, pCtx); break;
12390	case DBGFEVENT_EXIT_LGDT: VBOXVMM_EXIT_LGDT(pVCpu, pCtx); break;
12391	case DBGFEVENT_EXIT_LIDT: VBOXVMM_EXIT_LIDT(pVCpu, pCtx); break;
12392	case DBGFEVENT_EXIT_SLDT: VBOXVMM_EXIT_SLDT(pVCpu, pCtx); break;
12393	case DBGFEVENT_EXIT_STR: VBOXVMM_EXIT_STR(pVCpu, pCtx); break;
12394	case DBGFEVENT_EXIT_LLDT: VBOXVMM_EXIT_LLDT(pVCpu, pCtx); break;
12395	case DBGFEVENT_EXIT_LTR: VBOXVMM_EXIT_LTR(pVCpu, pCtx); break;
12396	case DBGFEVENT_EXIT_RDTSCP: VBOXVMM_EXIT_RDTSCP(pVCpu, pCtx); break;
12397	case DBGFEVENT_EXIT_WBINVD: VBOXVMM_EXIT_WBINVD(pVCpu, pCtx); break;
12398	case DBGFEVENT_EXIT_XSETBV: VBOXVMM_EXIT_XSETBV(pVCpu, pCtx); break;
12399	case DBGFEVENT_EXIT_RDRAND: VBOXVMM_EXIT_RDRAND(pVCpu, pCtx); break;
12400	case DBGFEVENT_EXIT_RDSEED: VBOXVMM_EXIT_RDSEED(pVCpu, pCtx); break;
12401	case DBGFEVENT_EXIT_XSAVES: VBOXVMM_EXIT_XSAVES(pVCpu, pCtx); break;
12402	case DBGFEVENT_EXIT_XRSTORS: VBOXVMM_EXIT_XRSTORS(pVCpu, pCtx); break;
12403	case DBGFEVENT_EXIT_VMM_CALL: VBOXVMM_EXIT_VMM_CALL(pVCpu, pCtx); break;
12404	case DBGFEVENT_EXIT_VMX_VMCLEAR: VBOXVMM_EXIT_VMX_VMCLEAR(pVCpu, pCtx); break;
12405	case DBGFEVENT_EXIT_VMX_VMLAUNCH: VBOXVMM_EXIT_VMX_VMLAUNCH(pVCpu, pCtx); break;
12406	case DBGFEVENT_EXIT_VMX_VMPTRLD: VBOXVMM_EXIT_VMX_VMPTRLD(pVCpu, pCtx); break;
12407	case DBGFEVENT_EXIT_VMX_VMPTRST: VBOXVMM_EXIT_VMX_VMPTRST(pVCpu, pCtx); break;
12408	case DBGFEVENT_EXIT_VMX_VMREAD: VBOXVMM_EXIT_VMX_VMREAD(pVCpu, pCtx); break;
12409	case DBGFEVENT_EXIT_VMX_VMRESUME: VBOXVMM_EXIT_VMX_VMRESUME(pVCpu, pCtx); break;
12410	case DBGFEVENT_EXIT_VMX_VMWRITE: VBOXVMM_EXIT_VMX_VMWRITE(pVCpu, pCtx); break;
12411	case DBGFEVENT_EXIT_VMX_VMXOFF: VBOXVMM_EXIT_VMX_VMXOFF(pVCpu, pCtx); break;
12412	case DBGFEVENT_EXIT_VMX_VMXON: VBOXVMM_EXIT_VMX_VMXON(pVCpu, pCtx); break;
12413	case DBGFEVENT_EXIT_VMX_INVEPT: VBOXVMM_EXIT_VMX_INVEPT(pVCpu, pCtx); break;
12414	case DBGFEVENT_EXIT_VMX_INVVPID: VBOXVMM_EXIT_VMX_INVVPID(pVCpu, pCtx); break;
12415	case DBGFEVENT_EXIT_VMX_INVPCID: VBOXVMM_EXIT_VMX_INVPCID(pVCpu, pCtx); break;
12416	case DBGFEVENT_EXIT_VMX_VMFUNC: VBOXVMM_EXIT_VMX_VMFUNC(pVCpu, pCtx); break;
12417	case DBGFEVENT_EXIT_VMX_EPT_MISCONFIG: VBOXVMM_EXIT_VMX_EPT_MISCONFIG(pVCpu, pCtx); break;
12418	case DBGFEVENT_EXIT_VMX_EPT_VIOLATION: VBOXVMM_EXIT_VMX_EPT_VIOLATION(pVCpu, pCtx); break;
12419	case DBGFEVENT_EXIT_VMX_VAPIC_ACCESS: VBOXVMM_EXIT_VMX_VAPIC_ACCESS(pVCpu, pCtx); break;
12420	case DBGFEVENT_EXIT_VMX_VAPIC_WRITE: VBOXVMM_EXIT_VMX_VAPIC_WRITE(pVCpu, pCtx); break;
12421	default: AssertMsgFailed(("enmEvent2=%d uExitReason=%d\n", enmEvent2, uExitReason)); break;
12422	}
12423	}
12424
12425	/*
12426	* Fire of the DBGF event, if enabled (our check here is just a quick one,
12427	* the DBGF call will do a full check).
12428	*
12429	* Note! DBGF sets DBGFEVENT_INTERRUPT_SOFTWARE in the bitmap.
12430	* Note! If we have to events, we prioritize the first, i.e. the instruction
12431	* one, in order to avoid event nesting.
12432	*/
12433	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
12434	if ( enmEvent1 != DBGFEVENT_END
12435	&& DBGF_IS_EVENT_ENABLED(pVM, enmEvent1))
12436	{
12437	hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
12438	VBOXSTRICTRC rcStrict = DBGFEventGenericWithArgs(pVM, pVCpu, enmEvent1, DBGFEVENTCTX_HM, 1, uEventArg);
12439	if (rcStrict != VINF_SUCCESS)
12440	return rcStrict;
12441	}
12442	else if ( enmEvent2 != DBGFEVENT_END
12443	&& DBGF_IS_EVENT_ENABLED(pVM, enmEvent2))
12444	{
12445	hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
12446	VBOXSTRICTRC rcStrict = DBGFEventGenericWithArgs(pVM, pVCpu, enmEvent2, DBGFEVENTCTX_HM, 1, uEventArg);
12447	if (rcStrict != VINF_SUCCESS)
12448	return rcStrict;
12449	}
12450
12451	return VINF_SUCCESS;
12452	}
12453
12454
12455	/**
12456	* Single-stepping VM-exit filtering.
12457	*
12458	* This is preprocessing the VM-exits and deciding whether we've gotten far
12459	* enough to return VINF_EM_DBG_STEPPED already. If not, normal VM-exit
12460	* handling is performed.
12461	*
12462	* @returns Strict VBox status code (i.e. informational status codes too).
12463	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
12464	* @param pVmxTransient The VMX-transient structure.
12465	* @param pDbgState The debug state.
12466	*/
12467	DECLINLINE(VBOXSTRICTRC) hmR0VmxRunDebugHandleExit(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, PVMXRUNDBGSTATE pDbgState)
12468	{
12469	/*
12470	* Expensive (saves context) generic dtrace VM-exit probe.
12471	*/
12472	uint32_t const uExitReason = pVmxTransient->uExitReason;
12473	if (!VBOXVMM_R0_HMVMX_VMEXIT_ENABLED())
12474	{ /* more likely */ }
12475	else
12476	{
12477	hmR0VmxReadExitQualVmcs(pVmxTransient);
12478	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
12479	AssertRC(rc);
12480	VBOXVMM_R0_HMVMX_VMEXIT(pVCpu, &pVCpu->cpum.GstCtx, pVmxTransient->uExitReason, pVmxTransient->uExitQual);
12481	}
12482
12483	/*
12484	* Check for host NMI, just to get that out of the way.
12485	*/
12486	if (uExitReason != VMX_EXIT_XCPT_OR_NMI)
12487	{ /* normally likely */ }
12488	else
12489	{
12490	hmR0VmxReadExitIntInfoVmcs(pVmxTransient);
12491	uint32_t const uIntType = VMX_EXIT_INT_INFO_TYPE(pVmxTransient->uExitIntInfo);
12492	if (uIntType == VMX_EXIT_INT_INFO_TYPE_NMI)
12493	return hmR0VmxExitHostNmi(pVCpu, pVmxTransient->pVmcsInfo);
12494	}
12495
12496	/*
12497	* Check for single stepping event if we're stepping.
12498	*/
12499	if (pVCpu->hm.s.fSingleInstruction)
12500	{
12501	switch (uExitReason)
12502	{
12503	case VMX_EXIT_MTF:
12504	return hmR0VmxExitMtf(pVCpu, pVmxTransient);
12505
12506	/* Various events: */
12507	case VMX_EXIT_XCPT_OR_NMI:
12508	case VMX_EXIT_EXT_INT:
12509	case VMX_EXIT_TRIPLE_FAULT:
12510	case VMX_EXIT_INT_WINDOW:
12511	case VMX_EXIT_NMI_WINDOW:
12512	case VMX_EXIT_TASK_SWITCH:
12513	case VMX_EXIT_TPR_BELOW_THRESHOLD:
12514	case VMX_EXIT_APIC_ACCESS:
12515	case VMX_EXIT_EPT_VIOLATION:
12516	case VMX_EXIT_EPT_MISCONFIG:
12517	case VMX_EXIT_PREEMPT_TIMER:
12518
12519	/* Instruction specific VM-exits: */
12520	case VMX_EXIT_CPUID:
12521	case VMX_EXIT_GETSEC:
12522	case VMX_EXIT_HLT:
12523	case VMX_EXIT_INVD:
12524	case VMX_EXIT_INVLPG:
12525	case VMX_EXIT_RDPMC:
12526	case VMX_EXIT_RDTSC:
12527	case VMX_EXIT_RSM:
12528	case VMX_EXIT_VMCALL:
12529	case VMX_EXIT_VMCLEAR:
12530	case VMX_EXIT_VMLAUNCH:
12531	case VMX_EXIT_VMPTRLD:
12532	case VMX_EXIT_VMPTRST:
12533	case VMX_EXIT_VMREAD:
12534	case VMX_EXIT_VMRESUME:
12535	case VMX_EXIT_VMWRITE:
12536	case VMX_EXIT_VMXOFF:
12537	case VMX_EXIT_VMXON:
12538	case VMX_EXIT_MOV_CRX:
12539	case VMX_EXIT_MOV_DRX:
12540	case VMX_EXIT_IO_INSTR:
12541	case VMX_EXIT_RDMSR:
12542	case VMX_EXIT_WRMSR:
12543	case VMX_EXIT_MWAIT:
12544	case VMX_EXIT_MONITOR:
12545	case VMX_EXIT_PAUSE:
12546	case VMX_EXIT_GDTR_IDTR_ACCESS:
12547	case VMX_EXIT_LDTR_TR_ACCESS:
12548	case VMX_EXIT_INVEPT:
12549	case VMX_EXIT_RDTSCP:
12550	case VMX_EXIT_INVVPID:
12551	case VMX_EXIT_WBINVD:
12552	case VMX_EXIT_XSETBV:
12553	case VMX_EXIT_RDRAND:
12554	case VMX_EXIT_INVPCID:
12555	case VMX_EXIT_VMFUNC:
12556	case VMX_EXIT_RDSEED:
12557	case VMX_EXIT_XSAVES:
12558	case VMX_EXIT_XRSTORS:
12559	{
12560	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
12561	AssertRCReturn(rc, rc);
12562	if ( pVCpu->cpum.GstCtx.rip != pDbgState->uRipStart
12563	\|\| pVCpu->cpum.GstCtx.cs.Sel != pDbgState->uCsStart)
12564	return VINF_EM_DBG_STEPPED;
12565	break;
12566	}
12567
12568	/* Errors and unexpected events: */
12569	case VMX_EXIT_INIT_SIGNAL:
12570	case VMX_EXIT_SIPI:
12571	case VMX_EXIT_IO_SMI:
12572	case VMX_EXIT_SMI:
12573	case VMX_EXIT_ERR_INVALID_GUEST_STATE:
12574	case VMX_EXIT_ERR_MSR_LOAD:
12575	case VMX_EXIT_ERR_MACHINE_CHECK:
12576	case VMX_EXIT_PML_FULL:
12577	case VMX_EXIT_VIRTUALIZED_EOI:
12578	case VMX_EXIT_APIC_WRITE: /* Some talk about this being fault like, so I guess we must process it? */
12579	break;
12580
12581	default:
12582	AssertMsgFailed(("Unexpected VM-exit=%#x\n", uExitReason));
12583	break;
12584	}
12585	}
12586
12587	/*
12588	* Check for debugger event breakpoints and dtrace probes.
12589	*/
12590	if ( uExitReason < RT_ELEMENTS(pDbgState->bmExitsToCheck) * 32U
12591	&& ASMBitTest(pDbgState->bmExitsToCheck, uExitReason) )
12592	{
12593	VBOXSTRICTRC rcStrict = hmR0VmxHandleExitDtraceEvents(pVCpu, pVmxTransient, uExitReason);
12594	if (rcStrict != VINF_SUCCESS)
12595	return rcStrict;
12596	}
12597
12598	/*
12599	* Normal processing.
12600	*/
12601	#ifdef HMVMX_USE_FUNCTION_TABLE
12602	return g_aVMExitHandlers[uExitReason].pfn(pVCpu, pVmxTransient);
12603	#else
12604	return hmR0VmxHandleExit(pVCpu, pVmxTransient, uExitReason);
12605	#endif
12606	}
12607
12608
12609	/**
12610	* Single steps guest code using hardware-assisted VMX.
12611	*
12612	* This is -not- the same as the guest single-stepping itself (say using EFLAGS.TF)
12613	* but single-stepping through the hypervisor debugger.
12614	*
12615	* @returns Strict VBox status code (i.e. informational status codes too).
12616	* @param pVCpu The cross context virtual CPU structure.
12617	* @param pcLoops Pointer to the number of executed loops.
12618	*
12619	* @note Mostly the same as hmR0VmxRunGuestCodeNormal().
12620	*/
12621	static VBOXSTRICTRC hmR0VmxRunGuestCodeDebug(PVMCPUCC pVCpu, uint32_t *pcLoops)
12622	{
12623	uint32_t const cMaxResumeLoops = pVCpu->CTX_SUFF(pVM)->hmr0.s.cMaxResumeLoops;
12624	Assert(pcLoops);
12625	Assert(*pcLoops <= cMaxResumeLoops);
12626
12627	VMXTRANSIENT VmxTransient;
12628	RT_ZERO(VmxTransient);
12629	VmxTransient.pVmcsInfo = hmGetVmxActiveVmcsInfo(pVCpu);
12630
12631	/* Set HMCPU indicators. */
12632	bool const fSavedSingleInstruction = pVCpu->hm.s.fSingleInstruction;
12633	pVCpu->hm.s.fSingleInstruction = pVCpu->hm.s.fSingleInstruction \|\| DBGFIsStepping(pVCpu);
12634	pVCpu->hmr0.s.fDebugWantRdTscExit = false;
12635	pVCpu->hmr0.s.fUsingDebugLoop = true;
12636
12637	/* State we keep to help modify and later restore the VMCS fields we alter, and for detecting steps. */
12638	VMXRUNDBGSTATE DbgState;
12639	hmR0VmxRunDebugStateInit(pVCpu, &VmxTransient, &DbgState);
12640	hmR0VmxPreRunGuestDebugStateUpdate(pVCpu, &VmxTransient, &DbgState);
12641
12642	/*
12643	* The loop.
12644	*/
12645	VBOXSTRICTRC rcStrict = VERR_INTERNAL_ERROR_5;
12646	for (;;)
12647	{
12648	Assert(!HMR0SuspendPending());
12649	HMVMX_ASSERT_CPU_SAFE(pVCpu);
12650	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
12651	bool fStepping = pVCpu->hm.s.fSingleInstruction;
12652
12653	/* Set up VM-execution controls the next two can respond to. */
12654	hmR0VmxPreRunGuestDebugStateApply(pVCpu, &VmxTransient, &DbgState);
12655
12656	/*
12657	* Preparatory work for running guest code, this may force us to
12658	* return to ring-3.
12659	*
12660	* Warning! This bugger disables interrupts on VINF_SUCCESS!
12661	*/
12662	rcStrict = hmR0VmxPreRunGuest(pVCpu, &VmxTransient, fStepping);
12663	if (rcStrict != VINF_SUCCESS)
12664	break;
12665
12666	/* Interrupts are disabled at this point! */
12667	hmR0VmxPreRunGuestCommitted(pVCpu, &VmxTransient);
12668
12669	/* Override any obnoxious code in the above two calls. */
12670	hmR0VmxPreRunGuestDebugStateApply(pVCpu, &VmxTransient, &DbgState);
12671
12672	/*
12673	* Finally execute the guest.
12674	*/
12675	int rcRun = hmR0VmxRunGuest(pVCpu, &VmxTransient);
12676
12677	hmR0VmxPostRunGuest(pVCpu, &VmxTransient, rcRun);
12678	/* Interrupts are re-enabled at this point! */
12679
12680	/* Check for errors with running the VM (VMLAUNCH/VMRESUME). */
12681	if (RT_SUCCESS(rcRun))
12682	{ /* very likely */ }
12683	else
12684	{
12685	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatPreExit, x);
12686	hmR0VmxReportWorldSwitchError(pVCpu, rcRun, &VmxTransient);
12687	return rcRun;
12688	}
12689
12690	/* Profile the VM-exit. */
12691	AssertMsg(VmxTransient.uExitReason <= VMX_EXIT_MAX, ("%#x\n", VmxTransient.uExitReason));
12692	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll);
12693	STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[VmxTransient.uExitReason & MASK_EXITREASON_STAT]);
12694	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatPreExit, &pVCpu->hm.s.StatExitHandling, x);
12695	HMVMX_START_EXIT_DISPATCH_PROF();
12696
12697	VBOXVMM_R0_HMVMX_VMEXIT_NOCTX(pVCpu, &pVCpu->cpum.GstCtx, VmxTransient.uExitReason);
12698
12699	/*
12700	* Handle the VM-exit - we quit earlier on certain VM-exits, see hmR0VmxHandleExitDebug().
12701	*/
12702	rcStrict = hmR0VmxRunDebugHandleExit(pVCpu, &VmxTransient, &DbgState);
12703	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitHandling, x);
12704	if (rcStrict != VINF_SUCCESS)
12705	break;
12706	if (++(*pcLoops) > cMaxResumeLoops)
12707	{
12708	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
12709	rcStrict = VINF_EM_RAW_INTERRUPT;
12710	break;
12711	}
12712
12713	/*
12714	* Stepping: Did the RIP change, if so, consider it a single step.
12715	* Otherwise, make sure one of the TFs gets set.
12716	*/
12717	if (fStepping)
12718	{
12719	int rc = hmR0VmxImportGuestState(pVCpu, VmxTransient.pVmcsInfo, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
12720	AssertRC(rc);
12721	if ( pVCpu->cpum.GstCtx.rip != DbgState.uRipStart
12722	\|\| pVCpu->cpum.GstCtx.cs.Sel != DbgState.uCsStart)
12723	{
12724	rcStrict = VINF_EM_DBG_STEPPED;
12725	break;
12726	}
12727	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_DR7);
12728	}
12729
12730	/*
12731	* Update when dtrace settings changes (DBGF kicks us, so no need to check).
12732	*/
12733	if (VBOXVMM_GET_SETTINGS_SEQ_NO() != DbgState.uDtraceSettingsSeqNo)
12734	hmR0VmxPreRunGuestDebugStateUpdate(pVCpu, &VmxTransient, &DbgState);
12735
12736	/* Restore all controls applied by hmR0VmxPreRunGuestDebugStateApply above. */
12737	rcStrict = hmR0VmxRunDebugStateRevert(pVCpu, &VmxTransient, &DbgState, rcStrict);
12738	Assert(rcStrict == VINF_SUCCESS);
12739	}
12740
12741	/*
12742	* Clear the X86_EFL_TF if necessary.
12743	*/
12744	if (pVCpu->hmr0.s.fClearTrapFlag)
12745	{
12746	int rc = hmR0VmxImportGuestState(pVCpu, VmxTransient.pVmcsInfo, CPUMCTX_EXTRN_RFLAGS);
12747	AssertRC(rc);
12748	pVCpu->hmr0.s.fClearTrapFlag = false;
12749	pVCpu->cpum.GstCtx.eflags.Bits.u1TF = 0;
12750	}
12751	/** @todo there seems to be issues with the resume flag when the monitor trap
12752	* flag is pending without being used. Seen early in bios init when
12753	* accessing APIC page in protected mode. */
12754
12755	/* Restore HMCPU indicators. */
12756	pVCpu->hmr0.s.fUsingDebugLoop = false;
12757	pVCpu->hmr0.s.fDebugWantRdTscExit = false;
12758	pVCpu->hm.s.fSingleInstruction = fSavedSingleInstruction;
12759
12760	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
12761	return rcStrict;
12762	}
12763
12764
12765	/** @} */
12766
12767
12768	/**
12769	* Checks if any expensive dtrace probes are enabled and we should go to the
12770	* debug loop.
12771	*
12772	* @returns true if we should use debug loop, false if not.
12773	*/
12774	static bool hmR0VmxAnyExpensiveProbesEnabled(void)
12775	{
12776	/* It's probably faster to OR the raw 32-bit counter variables together.
12777	Since the variables are in an array and the probes are next to one
12778	another (more or less), we have good locality. So, better read
12779	eight-nine cache lines ever time and only have one conditional, than
12780	128+ conditionals, right? */
12781	return ( VBOXVMM_R0_HMVMX_VMEXIT_ENABLED_RAW() /* expensive too due to context */
12782	\| VBOXVMM_XCPT_DE_ENABLED_RAW()
12783	\| VBOXVMM_XCPT_DB_ENABLED_RAW()
12784	\| VBOXVMM_XCPT_BP_ENABLED_RAW()
12785	\| VBOXVMM_XCPT_OF_ENABLED_RAW()
12786	\| VBOXVMM_XCPT_BR_ENABLED_RAW()
12787	\| VBOXVMM_XCPT_UD_ENABLED_RAW()
12788	\| VBOXVMM_XCPT_NM_ENABLED_RAW()
12789	\| VBOXVMM_XCPT_DF_ENABLED_RAW()
12790	\| VBOXVMM_XCPT_TS_ENABLED_RAW()
12791	\| VBOXVMM_XCPT_NP_ENABLED_RAW()
12792	\| VBOXVMM_XCPT_SS_ENABLED_RAW()
12793	\| VBOXVMM_XCPT_GP_ENABLED_RAW()
12794	\| VBOXVMM_XCPT_PF_ENABLED_RAW()
12795	\| VBOXVMM_XCPT_MF_ENABLED_RAW()
12796	\| VBOXVMM_XCPT_AC_ENABLED_RAW()
12797	\| VBOXVMM_XCPT_XF_ENABLED_RAW()
12798	\| VBOXVMM_XCPT_VE_ENABLED_RAW()
12799	\| VBOXVMM_XCPT_SX_ENABLED_RAW()
12800	\| VBOXVMM_INT_SOFTWARE_ENABLED_RAW()
12801	\| VBOXVMM_INT_HARDWARE_ENABLED_RAW()
12802	) != 0
12803	\|\| ( VBOXVMM_INSTR_HALT_ENABLED_RAW()
12804	\| VBOXVMM_INSTR_MWAIT_ENABLED_RAW()
12805	\| VBOXVMM_INSTR_MONITOR_ENABLED_RAW()
12806	\| VBOXVMM_INSTR_CPUID_ENABLED_RAW()
12807	\| VBOXVMM_INSTR_INVD_ENABLED_RAW()
12808	\| VBOXVMM_INSTR_WBINVD_ENABLED_RAW()
12809	\| VBOXVMM_INSTR_INVLPG_ENABLED_RAW()
12810	\| VBOXVMM_INSTR_RDTSC_ENABLED_RAW()
12811	\| VBOXVMM_INSTR_RDTSCP_ENABLED_RAW()
12812	\| VBOXVMM_INSTR_RDPMC_ENABLED_RAW()
12813	\| VBOXVMM_INSTR_RDMSR_ENABLED_RAW()
12814	\| VBOXVMM_INSTR_WRMSR_ENABLED_RAW()
12815	\| VBOXVMM_INSTR_CRX_READ_ENABLED_RAW()
12816	\| VBOXVMM_INSTR_CRX_WRITE_ENABLED_RAW()
12817	\| VBOXVMM_INSTR_DRX_READ_ENABLED_RAW()
12818	\| VBOXVMM_INSTR_DRX_WRITE_ENABLED_RAW()
12819	\| VBOXVMM_INSTR_PAUSE_ENABLED_RAW()
12820	\| VBOXVMM_INSTR_XSETBV_ENABLED_RAW()
12821	\| VBOXVMM_INSTR_SIDT_ENABLED_RAW()
12822	\| VBOXVMM_INSTR_LIDT_ENABLED_RAW()
12823	\| VBOXVMM_INSTR_SGDT_ENABLED_RAW()
12824	\| VBOXVMM_INSTR_LGDT_ENABLED_RAW()
12825	\| VBOXVMM_INSTR_SLDT_ENABLED_RAW()
12826	\| VBOXVMM_INSTR_LLDT_ENABLED_RAW()
12827	\| VBOXVMM_INSTR_STR_ENABLED_RAW()
12828	\| VBOXVMM_INSTR_LTR_ENABLED_RAW()
12829	\| VBOXVMM_INSTR_GETSEC_ENABLED_RAW()
12830	\| VBOXVMM_INSTR_RSM_ENABLED_RAW()
12831	\| VBOXVMM_INSTR_RDRAND_ENABLED_RAW()
12832	\| VBOXVMM_INSTR_RDSEED_ENABLED_RAW()
12833	\| VBOXVMM_INSTR_XSAVES_ENABLED_RAW()
12834	\| VBOXVMM_INSTR_XRSTORS_ENABLED_RAW()
12835	\| VBOXVMM_INSTR_VMM_CALL_ENABLED_RAW()
12836	\| VBOXVMM_INSTR_VMX_VMCLEAR_ENABLED_RAW()
12837	\| VBOXVMM_INSTR_VMX_VMLAUNCH_ENABLED_RAW()
12838	\| VBOXVMM_INSTR_VMX_VMPTRLD_ENABLED_RAW()
12839	\| VBOXVMM_INSTR_VMX_VMPTRST_ENABLED_RAW()
12840	\| VBOXVMM_INSTR_VMX_VMREAD_ENABLED_RAW()
12841	\| VBOXVMM_INSTR_VMX_VMRESUME_ENABLED_RAW()
12842	\| VBOXVMM_INSTR_VMX_VMWRITE_ENABLED_RAW()
12843	\| VBOXVMM_INSTR_VMX_VMXOFF_ENABLED_RAW()
12844	\| VBOXVMM_INSTR_VMX_VMXON_ENABLED_RAW()
12845	\| VBOXVMM_INSTR_VMX_VMFUNC_ENABLED_RAW()
12846	\| VBOXVMM_INSTR_VMX_INVEPT_ENABLED_RAW()
12847	\| VBOXVMM_INSTR_VMX_INVVPID_ENABLED_RAW()
12848	\| VBOXVMM_INSTR_VMX_INVPCID_ENABLED_RAW()
12849	) != 0
12850	\|\| ( VBOXVMM_EXIT_TASK_SWITCH_ENABLED_RAW()
12851	\| VBOXVMM_EXIT_HALT_ENABLED_RAW()
12852	\| VBOXVMM_EXIT_MWAIT_ENABLED_RAW()
12853	\| VBOXVMM_EXIT_MONITOR_ENABLED_RAW()
12854	\| VBOXVMM_EXIT_CPUID_ENABLED_RAW()
12855	\| VBOXVMM_EXIT_INVD_ENABLED_RAW()
12856	\| VBOXVMM_EXIT_WBINVD_ENABLED_RAW()
12857	\| VBOXVMM_EXIT_INVLPG_ENABLED_RAW()
12858	\| VBOXVMM_EXIT_RDTSC_ENABLED_RAW()
12859	\| VBOXVMM_EXIT_RDTSCP_ENABLED_RAW()
12860	\| VBOXVMM_EXIT_RDPMC_ENABLED_RAW()
12861	\| VBOXVMM_EXIT_RDMSR_ENABLED_RAW()
12862	\| VBOXVMM_EXIT_WRMSR_ENABLED_RAW()
12863	\| VBOXVMM_EXIT_CRX_READ_ENABLED_RAW()
12864	\| VBOXVMM_EXIT_CRX_WRITE_ENABLED_RAW()
12865	\| VBOXVMM_EXIT_DRX_READ_ENABLED_RAW()
12866	\| VBOXVMM_EXIT_DRX_WRITE_ENABLED_RAW()
12867	\| VBOXVMM_EXIT_PAUSE_ENABLED_RAW()
12868	\| VBOXVMM_EXIT_XSETBV_ENABLED_RAW()
12869	\| VBOXVMM_EXIT_SIDT_ENABLED_RAW()
12870	\| VBOXVMM_EXIT_LIDT_ENABLED_RAW()
12871	\| VBOXVMM_EXIT_SGDT_ENABLED_RAW()
12872	\| VBOXVMM_EXIT_LGDT_ENABLED_RAW()
12873	\| VBOXVMM_EXIT_SLDT_ENABLED_RAW()
12874	\| VBOXVMM_EXIT_LLDT_ENABLED_RAW()
12875	\| VBOXVMM_EXIT_STR_ENABLED_RAW()
12876	\| VBOXVMM_EXIT_LTR_ENABLED_RAW()
12877	\| VBOXVMM_EXIT_GETSEC_ENABLED_RAW()
12878	\| VBOXVMM_EXIT_RSM_ENABLED_RAW()
12879	\| VBOXVMM_EXIT_RDRAND_ENABLED_RAW()
12880	\| VBOXVMM_EXIT_RDSEED_ENABLED_RAW()
12881	\| VBOXVMM_EXIT_XSAVES_ENABLED_RAW()
12882	\| VBOXVMM_EXIT_XRSTORS_ENABLED_RAW()
12883	\| VBOXVMM_EXIT_VMM_CALL_ENABLED_RAW()
12884	\| VBOXVMM_EXIT_VMX_VMCLEAR_ENABLED_RAW()
12885	\| VBOXVMM_EXIT_VMX_VMLAUNCH_ENABLED_RAW()
12886	\| VBOXVMM_EXIT_VMX_VMPTRLD_ENABLED_RAW()
12887	\| VBOXVMM_EXIT_VMX_VMPTRST_ENABLED_RAW()
12888	\| VBOXVMM_EXIT_VMX_VMREAD_ENABLED_RAW()
12889	\| VBOXVMM_EXIT_VMX_VMRESUME_ENABLED_RAW()
12890	\| VBOXVMM_EXIT_VMX_VMWRITE_ENABLED_RAW()
12891	\| VBOXVMM_EXIT_VMX_VMXOFF_ENABLED_RAW()
12892	\| VBOXVMM_EXIT_VMX_VMXON_ENABLED_RAW()
12893	\| VBOXVMM_EXIT_VMX_VMFUNC_ENABLED_RAW()
12894	\| VBOXVMM_EXIT_VMX_INVEPT_ENABLED_RAW()
12895	\| VBOXVMM_EXIT_VMX_INVVPID_ENABLED_RAW()
12896	\| VBOXVMM_EXIT_VMX_INVPCID_ENABLED_RAW()
12897	\| VBOXVMM_EXIT_VMX_EPT_VIOLATION_ENABLED_RAW()
12898	\| VBOXVMM_EXIT_VMX_EPT_MISCONFIG_ENABLED_RAW()
12899	\| VBOXVMM_EXIT_VMX_VAPIC_ACCESS_ENABLED_RAW()
12900	\| VBOXVMM_EXIT_VMX_VAPIC_WRITE_ENABLED_RAW()
12901	) != 0;
12902	}
12903
12904
12905	/**
12906	* Runs the guest using hardware-assisted VMX.
12907	*
12908	* @returns Strict VBox status code (i.e. informational status codes too).
12909	* @param pVCpu The cross context virtual CPU structure.
12910	*/
12911	VMMR0DECL(VBOXSTRICTRC) VMXR0RunGuestCode(PVMCPUCC pVCpu)
12912	{
12913	AssertPtr(pVCpu);
12914	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
12915	Assert(VMMRZCallRing3IsEnabled(pVCpu));
12916	Assert(!ASMAtomicUoReadU64(&pCtx->fExtrn));
12917	HMVMX_ASSERT_PREEMPT_SAFE(pVCpu);
12918
12919	VBOXSTRICTRC rcStrict;
12920	uint32_t cLoops = 0;
12921	for (;;)
12922	{
12923	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
12924	bool const fInNestedGuestMode = CPUMIsGuestInVmxNonRootMode(pCtx);
12925	#else
12926	NOREF(pCtx);
12927	bool const fInNestedGuestMode = false;
12928	#endif
12929	if (!fInNestedGuestMode)
12930	{
12931	if ( !pVCpu->hm.s.fUseDebugLoop
12932	&& (!VBOXVMM_ANY_PROBES_ENABLED() \|\| !hmR0VmxAnyExpensiveProbesEnabled())
12933	&& !DBGFIsStepping(pVCpu)
12934	&& !pVCpu->CTX_SUFF(pVM)->dbgf.ro.cEnabledInt3Breakpoints)
12935	rcStrict = hmR0VmxRunGuestCodeNormal(pVCpu, &cLoops);
12936	else
12937	rcStrict = hmR0VmxRunGuestCodeDebug(pVCpu, &cLoops);
12938	}
12939	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
12940	else
12941	rcStrict = hmR0VmxRunGuestCodeNested(pVCpu, &cLoops);
12942
12943	if (rcStrict == VINF_VMX_VMLAUNCH_VMRESUME)
12944	{
12945	Assert(CPUMIsGuestInVmxNonRootMode(pCtx));
12946	continue;
12947	}
12948	if (rcStrict == VINF_VMX_VMEXIT)
12949	{
12950	Assert(!CPUMIsGuestInVmxNonRootMode(pCtx));
12951	continue;
12952	}
12953	#endif
12954	break;
12955	}
12956
12957	int const rcLoop = VBOXSTRICTRC_VAL(rcStrict);
12958	switch (rcLoop)
12959	{
12960	case VERR_EM_INTERPRETER: rcStrict = VINF_EM_RAW_EMULATE_INSTR; break;
12961	case VINF_EM_RESET: rcStrict = VINF_EM_TRIPLE_FAULT; break;
12962	}
12963
12964	int rc2 = hmR0VmxExitToRing3(pVCpu, rcStrict);
12965	if (RT_FAILURE(rc2))
12966	{
12967	pVCpu->hm.s.u32HMError = (uint32_t)VBOXSTRICTRC_VAL(rcStrict);
12968	rcStrict = rc2;
12969	}
12970	Assert(!ASMAtomicUoReadU64(&pCtx->fExtrn));
12971	Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
12972	return rcStrict;
12973	}
12974
12975
12976	#ifndef HMVMX_USE_FUNCTION_TABLE
12977	/**
12978	* Handles a guest VM-exit from hardware-assisted VMX execution.
12979	*
12980	* @returns Strict VBox status code (i.e. informational status codes too).
12981	* @param pVCpu The cross context virtual CPU structure.
12982	* @param pVmxTransient The VMX-transient structure.
12983	*/
12984	DECLINLINE(VBOXSTRICTRC) hmR0VmxHandleExit(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
12985	{
12986	#ifdef DEBUG_ramshankar
12987	# define VMEXIT_CALL_RET(a_fSave, a_CallExpr) \
12988	do { \
12989	if (a_fSave != 0) \
12990	hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL); \
12991	VBOXSTRICTRC rcStrict = a_CallExpr; \
12992	if (a_fSave != 0) \
12993	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST); \
12994	return rcStrict; \
12995	} while (0)
12996	#else
12997	# define VMEXIT_CALL_RET(a_fSave, a_CallExpr) return a_CallExpr
12998	#endif
12999	uint32_t const uExitReason = pVmxTransient->uExitReason;
13000	switch (uExitReason)
13001	{
13002	case VMX_EXIT_EPT_MISCONFIG: VMEXIT_CALL_RET(0, hmR0VmxExitEptMisconfig(pVCpu, pVmxTransient));
13003	case VMX_EXIT_EPT_VIOLATION: VMEXIT_CALL_RET(0, hmR0VmxExitEptViolation(pVCpu, pVmxTransient));
13004	case VMX_EXIT_IO_INSTR: VMEXIT_CALL_RET(0, hmR0VmxExitIoInstr(pVCpu, pVmxTransient));
13005	case VMX_EXIT_CPUID: VMEXIT_CALL_RET(0, hmR0VmxExitCpuid(pVCpu, pVmxTransient));
13006	case VMX_EXIT_RDTSC: VMEXIT_CALL_RET(0, hmR0VmxExitRdtsc(pVCpu, pVmxTransient));
13007	case VMX_EXIT_RDTSCP: VMEXIT_CALL_RET(0, hmR0VmxExitRdtscp(pVCpu, pVmxTransient));
13008	case VMX_EXIT_APIC_ACCESS: VMEXIT_CALL_RET(0, hmR0VmxExitApicAccess(pVCpu, pVmxTransient));
13009	case VMX_EXIT_XCPT_OR_NMI: VMEXIT_CALL_RET(0, hmR0VmxExitXcptOrNmi(pVCpu, pVmxTransient));
13010	case VMX_EXIT_MOV_CRX: VMEXIT_CALL_RET(0, hmR0VmxExitMovCRx(pVCpu, pVmxTransient));
13011	case VMX_EXIT_EXT_INT: VMEXIT_CALL_RET(0, hmR0VmxExitExtInt(pVCpu, pVmxTransient));
13012	case VMX_EXIT_INT_WINDOW: VMEXIT_CALL_RET(0, hmR0VmxExitIntWindow(pVCpu, pVmxTransient));
13013	case VMX_EXIT_TPR_BELOW_THRESHOLD: VMEXIT_CALL_RET(0, hmR0VmxExitTprBelowThreshold(pVCpu, pVmxTransient));
13014	case VMX_EXIT_MWAIT: VMEXIT_CALL_RET(0, hmR0VmxExitMwait(pVCpu, pVmxTransient));
13015	case VMX_EXIT_MONITOR: VMEXIT_CALL_RET(0, hmR0VmxExitMonitor(pVCpu, pVmxTransient));
13016	case VMX_EXIT_TASK_SWITCH: VMEXIT_CALL_RET(0, hmR0VmxExitTaskSwitch(pVCpu, pVmxTransient));
13017	case VMX_EXIT_PREEMPT_TIMER: VMEXIT_CALL_RET(0, hmR0VmxExitPreemptTimer(pVCpu, pVmxTransient));
13018	case VMX_EXIT_RDMSR: VMEXIT_CALL_RET(0, hmR0VmxExitRdmsr(pVCpu, pVmxTransient));
13019	case VMX_EXIT_WRMSR: VMEXIT_CALL_RET(0, hmR0VmxExitWrmsr(pVCpu, pVmxTransient));
13020	case VMX_EXIT_VMCALL: VMEXIT_CALL_RET(0, hmR0VmxExitVmcall(pVCpu, pVmxTransient));
13021	case VMX_EXIT_MOV_DRX: VMEXIT_CALL_RET(0, hmR0VmxExitMovDRx(pVCpu, pVmxTransient));
13022	case VMX_EXIT_HLT: VMEXIT_CALL_RET(0, hmR0VmxExitHlt(pVCpu, pVmxTransient));
13023	case VMX_EXIT_INVD: VMEXIT_CALL_RET(0, hmR0VmxExitInvd(pVCpu, pVmxTransient));
13024	case VMX_EXIT_INVLPG: VMEXIT_CALL_RET(0, hmR0VmxExitInvlpg(pVCpu, pVmxTransient));
13025	case VMX_EXIT_MTF: VMEXIT_CALL_RET(0, hmR0VmxExitMtf(pVCpu, pVmxTransient));
13026	case VMX_EXIT_PAUSE: VMEXIT_CALL_RET(0, hmR0VmxExitPause(pVCpu, pVmxTransient));
13027	case VMX_EXIT_WBINVD: VMEXIT_CALL_RET(0, hmR0VmxExitWbinvd(pVCpu, pVmxTransient));
13028	case VMX_EXIT_XSETBV: VMEXIT_CALL_RET(0, hmR0VmxExitXsetbv(pVCpu, pVmxTransient));
13029	case VMX_EXIT_INVPCID: VMEXIT_CALL_RET(0, hmR0VmxExitInvpcid(pVCpu, pVmxTransient));
13030	case VMX_EXIT_GETSEC: VMEXIT_CALL_RET(0, hmR0VmxExitGetsec(pVCpu, pVmxTransient));
13031	case VMX_EXIT_RDPMC: VMEXIT_CALL_RET(0, hmR0VmxExitRdpmc(pVCpu, pVmxTransient));
13032	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
13033	case VMX_EXIT_VMCLEAR: VMEXIT_CALL_RET(0, hmR0VmxExitVmclear(pVCpu, pVmxTransient));
13034	case VMX_EXIT_VMLAUNCH: VMEXIT_CALL_RET(0, hmR0VmxExitVmlaunch(pVCpu, pVmxTransient));
13035	case VMX_EXIT_VMPTRLD: VMEXIT_CALL_RET(0, hmR0VmxExitVmptrld(pVCpu, pVmxTransient));
13036	case VMX_EXIT_VMPTRST: VMEXIT_CALL_RET(0, hmR0VmxExitVmptrst(pVCpu, pVmxTransient));
13037	case VMX_EXIT_VMREAD: VMEXIT_CALL_RET(0, hmR0VmxExitVmread(pVCpu, pVmxTransient));
13038	case VMX_EXIT_VMRESUME: VMEXIT_CALL_RET(0, hmR0VmxExitVmwrite(pVCpu, pVmxTransient));
13039	case VMX_EXIT_VMWRITE: VMEXIT_CALL_RET(0, hmR0VmxExitVmresume(pVCpu, pVmxTransient));
13040	case VMX_EXIT_VMXOFF: VMEXIT_CALL_RET(0, hmR0VmxExitVmxoff(pVCpu, pVmxTransient));
13041	case VMX_EXIT_VMXON: VMEXIT_CALL_RET(0, hmR0VmxExitVmxon(pVCpu, pVmxTransient));
13042	case VMX_EXIT_INVVPID: VMEXIT_CALL_RET(0, hmR0VmxExitInvvpid(pVCpu, pVmxTransient));
13043	case VMX_EXIT_INVEPT: VMEXIT_CALL_RET(0, hmR0VmxExitSetPendingXcptUD(pVCpu, pVmxTransient));
13044	#else
13045	case VMX_EXIT_VMCLEAR:
13046	case VMX_EXIT_VMLAUNCH:
13047	case VMX_EXIT_VMPTRLD:
13048	case VMX_EXIT_VMPTRST:
13049	case VMX_EXIT_VMREAD:
13050	case VMX_EXIT_VMRESUME:
13051	case VMX_EXIT_VMWRITE:
13052	case VMX_EXIT_VMXOFF:
13053	case VMX_EXIT_VMXON:
13054	case VMX_EXIT_INVVPID:
13055	case VMX_EXIT_INVEPT:
13056	return hmR0VmxExitSetPendingXcptUD(pVCpu, pVmxTransient);
13057	#endif
13058
13059	case VMX_EXIT_TRIPLE_FAULT: return hmR0VmxExitTripleFault(pVCpu, pVmxTransient);
13060	case VMX_EXIT_NMI_WINDOW: return hmR0VmxExitNmiWindow(pVCpu, pVmxTransient);
13061	case VMX_EXIT_ERR_INVALID_GUEST_STATE: return hmR0VmxExitErrInvalidGuestState(pVCpu, pVmxTransient);
13062
13063	case VMX_EXIT_INIT_SIGNAL:
13064	case VMX_EXIT_SIPI:
13065	case VMX_EXIT_IO_SMI:
13066	case VMX_EXIT_SMI:
13067	case VMX_EXIT_ERR_MSR_LOAD:
13068	case VMX_EXIT_ERR_MACHINE_CHECK:
13069	case VMX_EXIT_PML_FULL:
13070	case VMX_EXIT_VIRTUALIZED_EOI:
13071	case VMX_EXIT_GDTR_IDTR_ACCESS:
13072	case VMX_EXIT_LDTR_TR_ACCESS:
13073	case VMX_EXIT_APIC_WRITE:
13074	case VMX_EXIT_RDRAND:
13075	case VMX_EXIT_RSM:
13076	case VMX_EXIT_VMFUNC:
13077	case VMX_EXIT_ENCLS:
13078	case VMX_EXIT_RDSEED:
13079	case VMX_EXIT_XSAVES:
13080	case VMX_EXIT_XRSTORS:
13081	case VMX_EXIT_UMWAIT:
13082	case VMX_EXIT_TPAUSE:
13083	case VMX_EXIT_LOADIWKEY:
13084	default:
13085	return hmR0VmxExitErrUnexpected(pVCpu, pVmxTransient);
13086	}
13087	#undef VMEXIT_CALL_RET
13088	}
13089	#endif /* !HMVMX_USE_FUNCTION_TABLE */
13090
13091
13092	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
13093	/**
13094	* Handles a nested-guest VM-exit from hardware-assisted VMX execution.
13095	*
13096	* @returns Strict VBox status code (i.e. informational status codes too).
13097	* @param pVCpu The cross context virtual CPU structure.
13098	* @param pVmxTransient The VMX-transient structure.
13099	*/
13100	DECLINLINE(VBOXSTRICTRC) hmR0VmxHandleExitNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
13101	{
13102	uint32_t const uExitReason = pVmxTransient->uExitReason;
13103	switch (uExitReason)
13104	{
13105	case VMX_EXIT_EPT_MISCONFIG: return hmR0VmxExitEptMisconfig(pVCpu, pVmxTransient);
13106	case VMX_EXIT_EPT_VIOLATION: return hmR0VmxExitEptViolation(pVCpu, pVmxTransient);
13107	case VMX_EXIT_XCPT_OR_NMI: return hmR0VmxExitXcptOrNmiNested(pVCpu, pVmxTransient);
13108	case VMX_EXIT_IO_INSTR: return hmR0VmxExitIoInstrNested(pVCpu, pVmxTransient);
13109	case VMX_EXIT_HLT: return hmR0VmxExitHltNested(pVCpu, pVmxTransient);
13110
13111	/*
13112	* We shouldn't direct host physical interrupts to the nested-guest.
13113	*/
13114	case VMX_EXIT_EXT_INT:
13115	return hmR0VmxExitExtInt(pVCpu, pVmxTransient);
13116
13117	/*
13118	* Instructions that cause VM-exits unconditionally or the condition is
13119	* always is taken solely from the nested hypervisor (meaning if the VM-exit
13120	* happens, it's guaranteed to be a nested-guest VM-exit).
13121	*
13122	* - Provides VM-exit instruction length ONLY.
13123	*/
13124	case VMX_EXIT_CPUID: /* Unconditional. */
13125	case VMX_EXIT_VMCALL:
13126	case VMX_EXIT_GETSEC:
13127	case VMX_EXIT_INVD:
13128	case VMX_EXIT_XSETBV:
13129	case VMX_EXIT_VMLAUNCH:
13130	case VMX_EXIT_VMRESUME:
13131	case VMX_EXIT_VMXOFF:
13132	case VMX_EXIT_ENCLS: /* Condition specified solely by nested hypervisor. */
13133	case VMX_EXIT_VMFUNC:
13134	return hmR0VmxExitInstrNested(pVCpu, pVmxTransient);
13135
13136	/*
13137	* Instructions that cause VM-exits unconditionally or the condition is
13138	* always is taken solely from the nested hypervisor (meaning if the VM-exit
13139	* happens, it's guaranteed to be a nested-guest VM-exit).
13140	*
13141	* - Provides VM-exit instruction length.
13142	* - Provides VM-exit information.
13143	* - Optionally provides Exit qualification.
13144	*
13145	* Since Exit qualification is 0 for all VM-exits where it is not
13146	* applicable, reading and passing it to the guest should produce
13147	* defined behavior.
13148	*
13149	* See Intel spec. 27.2.1 "Basic VM-Exit Information".
13150	*/
13151	case VMX_EXIT_INVEPT: /* Unconditional. */
13152	case VMX_EXIT_INVVPID:
13153	case VMX_EXIT_VMCLEAR:
13154	case VMX_EXIT_VMPTRLD:
13155	case VMX_EXIT_VMPTRST:
13156	case VMX_EXIT_VMXON:
13157	case VMX_EXIT_GDTR_IDTR_ACCESS: /* Condition specified solely by nested hypervisor. */
13158	case VMX_EXIT_LDTR_TR_ACCESS:
13159	case VMX_EXIT_RDRAND:
13160	case VMX_EXIT_RDSEED:
13161	case VMX_EXIT_XSAVES:
13162	case VMX_EXIT_XRSTORS:
13163	case VMX_EXIT_UMWAIT:
13164	case VMX_EXIT_TPAUSE:
13165	return hmR0VmxExitInstrWithInfoNested(pVCpu, pVmxTransient);
13166
13167	case VMX_EXIT_RDTSC: return hmR0VmxExitRdtscNested(pVCpu, pVmxTransient);
13168	case VMX_EXIT_RDTSCP: return hmR0VmxExitRdtscpNested(pVCpu, pVmxTransient);
13169	case VMX_EXIT_RDMSR: return hmR0VmxExitRdmsrNested(pVCpu, pVmxTransient);
13170	case VMX_EXIT_WRMSR: return hmR0VmxExitWrmsrNested(pVCpu, pVmxTransient);
13171	case VMX_EXIT_INVLPG: return hmR0VmxExitInvlpgNested(pVCpu, pVmxTransient);
13172	case VMX_EXIT_INVPCID: return hmR0VmxExitInvpcidNested(pVCpu, pVmxTransient);
13173	case VMX_EXIT_TASK_SWITCH: return hmR0VmxExitTaskSwitchNested(pVCpu, pVmxTransient);
13174	case VMX_EXIT_WBINVD: return hmR0VmxExitWbinvdNested(pVCpu, pVmxTransient);
13175	case VMX_EXIT_MTF: return hmR0VmxExitMtfNested(pVCpu, pVmxTransient);
13176	case VMX_EXIT_APIC_ACCESS: return hmR0VmxExitApicAccessNested(pVCpu, pVmxTransient);
13177	case VMX_EXIT_APIC_WRITE: return hmR0VmxExitApicWriteNested(pVCpu, pVmxTransient);
13178	case VMX_EXIT_VIRTUALIZED_EOI: return hmR0VmxExitVirtEoiNested(pVCpu, pVmxTransient);
13179	case VMX_EXIT_MOV_CRX: return hmR0VmxExitMovCRxNested(pVCpu, pVmxTransient);
13180	case VMX_EXIT_INT_WINDOW: return hmR0VmxExitIntWindowNested(pVCpu, pVmxTransient);
13181	case VMX_EXIT_NMI_WINDOW: return hmR0VmxExitNmiWindowNested(pVCpu, pVmxTransient);
13182	case VMX_EXIT_TPR_BELOW_THRESHOLD: return hmR0VmxExitTprBelowThresholdNested(pVCpu, pVmxTransient);
13183	case VMX_EXIT_MWAIT: return hmR0VmxExitMwaitNested(pVCpu, pVmxTransient);
13184	case VMX_EXIT_MONITOR: return hmR0VmxExitMonitorNested(pVCpu, pVmxTransient);
13185	case VMX_EXIT_PAUSE: return hmR0VmxExitPauseNested(pVCpu, pVmxTransient);
13186
13187	case VMX_EXIT_PREEMPT_TIMER:
13188	{
13189	/** @todo NSTVMX: Preempt timer. */
13190	return hmR0VmxExitPreemptTimer(pVCpu, pVmxTransient);
13191	}
13192
13193	case VMX_EXIT_MOV_DRX: return hmR0VmxExitMovDRxNested(pVCpu, pVmxTransient);
13194	case VMX_EXIT_RDPMC: return hmR0VmxExitRdpmcNested(pVCpu, pVmxTransient);
13195
13196	case VMX_EXIT_VMREAD:
13197	case VMX_EXIT_VMWRITE: return hmR0VmxExitVmreadVmwriteNested(pVCpu, pVmxTransient);
13198
13199	case VMX_EXIT_TRIPLE_FAULT: return hmR0VmxExitTripleFaultNested(pVCpu, pVmxTransient);
13200	case VMX_EXIT_ERR_INVALID_GUEST_STATE: return hmR0VmxExitErrInvalidGuestStateNested(pVCpu, pVmxTransient);
13201
13202	case VMX_EXIT_INIT_SIGNAL:
13203	case VMX_EXIT_SIPI:
13204	case VMX_EXIT_IO_SMI:
13205	case VMX_EXIT_SMI:
13206	case VMX_EXIT_ERR_MSR_LOAD:
13207	case VMX_EXIT_ERR_MACHINE_CHECK:
13208	case VMX_EXIT_PML_FULL:
13209	case VMX_EXIT_RSM:
13210	default:
13211	return hmR0VmxExitErrUnexpected(pVCpu, pVmxTransient);
13212	}
13213	}
13214	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
13215
13216
13217	/** @name VM-exit helpers.
13218	* @{
13219	*/
13220	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
13221	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= VM-exit helpers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
13222	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
13223
13224	/** Macro for VM-exits called unexpectedly. */
13225	#define HMVMX_UNEXPECTED_EXIT_RET(a_pVCpu, a_HmError) \
13226	do { \
13227	(a_pVCpu)->hm.s.u32HMError = (a_HmError); \
13228	return VERR_VMX_UNEXPECTED_EXIT; \
13229	} while (0)
13230
13231	#ifdef VBOX_STRICT
13232	/* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
13233	# define HMVMX_ASSERT_PREEMPT_CPUID_VAR() \
13234	RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
13235
13236	# define HMVMX_ASSERT_PREEMPT_CPUID() \
13237	do { \
13238	RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
13239	AssertMsg(idAssertCpu == idAssertCpuNow, ("VMX %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
13240	} while (0)
13241
13242	# define HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient) \
13243	do { \
13244	AssertPtr((a_pVCpu)); \
13245	AssertPtr((a_pVmxTransient)); \
13246	Assert((a_pVmxTransient)->fVMEntryFailed == false); \
13247	Assert((a_pVmxTransient)->pVmcsInfo); \
13248	Assert(ASMIntAreEnabled()); \
13249	HMVMX_ASSERT_PREEMPT_SAFE(a_pVCpu); \
13250	HMVMX_ASSERT_PREEMPT_CPUID_VAR(); \
13251	Log4Func(("vcpu[%RU32]\n", (a_pVCpu)->idCpu)); \
13252	HMVMX_ASSERT_PREEMPT_SAFE(a_pVCpu); \
13253	if (!VMMRZCallRing3IsEnabled((a_pVCpu))) \
13254	HMVMX_ASSERT_PREEMPT_CPUID(); \
13255	HMVMX_STOP_EXIT_DISPATCH_PROF(); \
13256	} while (0)
13257
13258	# define HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient) \
13259	do { \
13260	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient); \
13261	Assert((a_pVmxTransient)->fIsNestedGuest); \
13262	} while (0)
13263
13264	# define HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient) \
13265	do { \
13266	Log4Func(("\n")); \
13267	} while (0)
13268	#else
13269	# define HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient) \
13270	do { \
13271	HMVMX_STOP_EXIT_DISPATCH_PROF(); \
13272	NOREF((a_pVCpu)); NOREF((a_pVmxTransient)); \
13273	} while (0)
13274
13275	# define HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient) \
13276	do { HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient); } while (0)
13277
13278	# define HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(a_pVCpu, a_pVmxTransient) do { } while (0)
13279	#endif
13280
13281	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
13282	/** Macro that does the necessary privilege checks and intercepted VM-exits for
13283	* guests that attempted to execute a VMX instruction. */
13284	# define HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(a_pVCpu, a_uExitReason) \
13285	do \
13286	{ \
13287	VBOXSTRICTRC rcStrictTmp = hmR0VmxCheckExitDueToVmxInstr((a_pVCpu), (a_uExitReason)); \
13288	if (rcStrictTmp == VINF_SUCCESS) \
13289	{ /* likely */ } \
13290	else if (rcStrictTmp == VINF_HM_PENDING_XCPT) \
13291	{ \
13292	Assert((a_pVCpu)->hm.s.Event.fPending); \
13293	Log4Func(("Privilege checks failed -> %#x\n", VMX_ENTRY_INT_INFO_VECTOR((a_pVCpu)->hm.s.Event.u64IntInfo))); \
13294	return VINF_SUCCESS; \
13295	} \
13296	else \
13297	{ \
13298	int rcTmp = VBOXSTRICTRC_VAL(rcStrictTmp); \
13299	AssertMsgFailedReturn(("Unexpected failure. rc=%Rrc", rcTmp), rcTmp); \
13300	} \
13301	} while (0)
13302
13303	/** Macro that decodes a memory operand for an VM-exit caused by an instruction. */
13304	# define HMVMX_DECODE_MEM_OPERAND(a_pVCpu, a_uExitInstrInfo, a_uExitQual, a_enmMemAccess, a_pGCPtrEffAddr) \
13305	do \
13306	{ \
13307	VBOXSTRICTRC rcStrictTmp = hmR0VmxDecodeMemOperand((a_pVCpu), (a_uExitInstrInfo), (a_uExitQual), (a_enmMemAccess), \
13308	(a_pGCPtrEffAddr)); \
13309	if (rcStrictTmp == VINF_SUCCESS) \
13310	{ /* likely */ } \
13311	else if (rcStrictTmp == VINF_HM_PENDING_XCPT) \
13312	{ \
13313	uint8_t const uXcptTmp = VMX_ENTRY_INT_INFO_VECTOR((a_pVCpu)->hm.s.Event.u64IntInfo); \
13314	Log4Func(("Memory operand decoding failed, raising xcpt %#x\n", uXcptTmp)); \
13315	NOREF(uXcptTmp); \
13316	return VINF_SUCCESS; \
13317	} \
13318	else \
13319	{ \
13320	Log4Func(("hmR0VmxDecodeMemOperand failed. rc=%Rrc\n", VBOXSTRICTRC_VAL(rcStrictTmp))); \
13321	return rcStrictTmp; \
13322	} \
13323	} while (0)
13324	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
13325
13326
13327	/**
13328	* Advances the guest RIP by the specified number of bytes.
13329	*
13330	* @param pVCpu The cross context virtual CPU structure.
13331	* @param cbInstr Number of bytes to advance the RIP by.
13332	*
13333	* @remarks No-long-jump zone!!!
13334	*/
13335	DECLINLINE(void) hmR0VmxAdvanceGuestRipBy(PVMCPUCC pVCpu, uint32_t cbInstr)
13336	{
13337	/* Advance the RIP. */
13338	pVCpu->cpum.GstCtx.rip += cbInstr;
13339	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP);
13340
13341	/* Update interrupt inhibition. */
13342	if ( VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS)
13343	&& pVCpu->cpum.GstCtx.rip != EMGetInhibitInterruptsPC(pVCpu))
13344	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
13345	}
13346
13347
13348	/**
13349	* Advances the guest RIP after reading it from the VMCS.
13350	*
13351	* @returns VBox status code, no informational status codes.
13352	* @param pVCpu The cross context virtual CPU structure.
13353	* @param pVmxTransient The VMX-transient structure.
13354	*
13355	* @remarks No-long-jump zone!!!
13356	*/
13357	static int hmR0VmxAdvanceGuestRip(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
13358	{
13359	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
13360	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS);
13361	AssertRCReturn(rc, rc);
13362
13363	hmR0VmxAdvanceGuestRipBy(pVCpu, pVmxTransient->cbExitInstr);
13364	return VINF_SUCCESS;
13365	}
13366
13367
13368	/**
13369	* Handle a condition that occurred while delivering an event through the guest or
13370	* nested-guest IDT.
13371	*
13372	* @returns Strict VBox status code (i.e. informational status codes too).
13373	* @retval VINF_SUCCESS if we should continue handling the VM-exit.
13374	* @retval VINF_HM_DOUBLE_FAULT if a \#DF condition was detected and we ought
13375	* to continue execution of the guest which will delivery the \#DF.
13376	* @retval VINF_EM_RESET if we detected a triple-fault condition.
13377	* @retval VERR_EM_GUEST_CPU_HANG if we detected a guest CPU hang.
13378	*
13379	* @param pVCpu The cross context virtual CPU structure.
13380	* @param pVmxTransient The VMX-transient structure.
13381	*
13382	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
13383	* Additionally, HMVMX_READ_EXIT_QUALIFICATION is required if the VM-exit
13384	* is due to an EPT violation, PML full or SPP-related event.
13385	*
13386	* @remarks No-long-jump zone!!!
13387	*/
13388	static VBOXSTRICTRC hmR0VmxCheckExitDueToEventDelivery(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
13389	{
13390	Assert(!pVCpu->hm.s.Event.fPending);
13391	HMVMX_ASSERT_READ(pVmxTransient, HMVMX_READ_XCPT_INFO);
13392	if ( pVmxTransient->uExitReason == VMX_EXIT_EPT_VIOLATION
13393	\|\| pVmxTransient->uExitReason == VMX_EXIT_PML_FULL
13394	\|\| pVmxTransient->uExitReason == VMX_EXIT_SPP_EVENT)
13395	HMVMX_ASSERT_READ(pVmxTransient, HMVMX_READ_EXIT_QUALIFICATION);
13396
13397	VBOXSTRICTRC rcStrict = VINF_SUCCESS;
13398	PCVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
13399	uint32_t const uIdtVectorInfo = pVmxTransient->uIdtVectoringInfo;
13400	uint32_t const uExitIntInfo = pVmxTransient->uExitIntInfo;
13401	if (VMX_IDT_VECTORING_INFO_IS_VALID(uIdtVectorInfo))
13402	{
13403	uint32_t const uIdtVector = VMX_IDT_VECTORING_INFO_VECTOR(uIdtVectorInfo);
13404	uint32_t const uIdtVectorType = VMX_IDT_VECTORING_INFO_TYPE(uIdtVectorInfo);
13405
13406	/*
13407	* If the event was a software interrupt (generated with INT n) or a software exception
13408	* (generated by INT3/INTO) or a privileged software exception (generated by INT1), we
13409	* can handle the VM-exit and continue guest execution which will re-execute the
13410	* instruction rather than re-injecting the exception, as that can cause premature
13411	* trips to ring-3 before injection and involve TRPM which currently has no way of
13412	* storing that these exceptions were caused by these instructions (ICEBP's #DB poses
13413	* the problem).
13414	*/
13415	IEMXCPTRAISE enmRaise;
13416	IEMXCPTRAISEINFO fRaiseInfo;
13417	if ( uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_SW_INT
13418	\|\| uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_SW_XCPT
13419	\|\| uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_PRIV_SW_XCPT)
13420	{
13421	enmRaise = IEMXCPTRAISE_REEXEC_INSTR;
13422	fRaiseInfo = IEMXCPTRAISEINFO_NONE;
13423	}
13424	else if (VMX_EXIT_INT_INFO_IS_VALID(uExitIntInfo))
13425	{
13426	uint32_t const uExitVectorType = VMX_EXIT_INT_INFO_TYPE(uExitIntInfo);
13427	uint8_t const uExitVector = VMX_EXIT_INT_INFO_VECTOR(uExitIntInfo);
13428	Assert(uExitVectorType == VMX_EXIT_INT_INFO_TYPE_HW_XCPT);
13429
13430	uint32_t const fIdtVectorFlags = hmR0VmxGetIemXcptFlags(uIdtVector, uIdtVectorType);
13431	uint32_t const fExitVectorFlags = hmR0VmxGetIemXcptFlags(uExitVector, uExitVectorType);
13432
13433	enmRaise = IEMEvaluateRecursiveXcpt(pVCpu, fIdtVectorFlags, uIdtVector, fExitVectorFlags, uExitVector, &fRaiseInfo);
13434
13435	/* Determine a vectoring #PF condition, see comment in hmR0VmxExitXcptPF(). */
13436	if (fRaiseInfo & (IEMXCPTRAISEINFO_EXT_INT_PF \| IEMXCPTRAISEINFO_NMI_PF))
13437	{
13438	pVmxTransient->fVectoringPF = true;
13439	enmRaise = IEMXCPTRAISE_PREV_EVENT;
13440	}
13441	}
13442	else
13443	{
13444	/*
13445	* If an exception or hardware interrupt delivery caused an EPT violation/misconfig or APIC access
13446	* VM-exit, then the VM-exit interruption-information will not be valid and we end up here.
13447	* It is sufficient to reflect the original event to the guest after handling the VM-exit.
13448	*/
13449	Assert( uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_HW_XCPT
13450	\|\| uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_NMI
13451	\|\| uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_EXT_INT);
13452	enmRaise = IEMXCPTRAISE_PREV_EVENT;
13453	fRaiseInfo = IEMXCPTRAISEINFO_NONE;
13454	}
13455
13456	/*
13457	* On CPUs that support Virtual NMIs, if this VM-exit (be it an exception or EPT violation/misconfig
13458	* etc.) occurred while delivering the NMI, we need to clear the block-by-NMI field in the guest
13459	* interruptibility-state before re-delivering the NMI after handling the VM-exit. Otherwise the
13460	* subsequent VM-entry would fail, see @bugref{7445}.
13461	*
13462	* See Intel spec. 30.7.1.2 "Resuming Guest Software after Handling an Exception".
13463	*/
13464	if ( uIdtVectorType == VMX_IDT_VECTORING_INFO_TYPE_NMI
13465	&& enmRaise == IEMXCPTRAISE_PREV_EVENT
13466	&& (pVmcsInfo->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
13467	&& CPUMIsGuestNmiBlocking(pVCpu))
13468	{
13469	CPUMSetGuestNmiBlocking(pVCpu, false);
13470	}
13471
13472	switch (enmRaise)
13473	{
13474	case IEMXCPTRAISE_CURRENT_XCPT:
13475	{
13476	Log4Func(("IDT: Pending secondary Xcpt: idtinfo=%#RX64 exitinfo=%#RX64\n", uIdtVectorInfo, uExitIntInfo));
13477	Assert(rcStrict == VINF_SUCCESS);
13478	break;
13479	}
13480
13481	case IEMXCPTRAISE_PREV_EVENT:
13482	{
13483	uint32_t u32ErrCode;
13484	if (VMX_IDT_VECTORING_INFO_IS_ERROR_CODE_VALID(uIdtVectorInfo))
13485	u32ErrCode = pVmxTransient->uIdtVectoringErrorCode;
13486	else
13487	u32ErrCode = 0;
13488
13489	/* If uExitVector is #PF, CR2 value will be updated from the VMCS if it's a guest #PF, see hmR0VmxExitXcptPF(). */
13490	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectReflect);
13491	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_IDT_INFO(uIdtVectorInfo), 0 /* cbInstr */,
13492	u32ErrCode, pVCpu->cpum.GstCtx.cr2);
13493
13494	Log4Func(("IDT: Pending vectoring event %#RX64 Err=%#RX32\n", pVCpu->hm.s.Event.u64IntInfo,
13495	pVCpu->hm.s.Event.u32ErrCode));
13496	Assert(rcStrict == VINF_SUCCESS);
13497	break;
13498	}
13499
13500	case IEMXCPTRAISE_REEXEC_INSTR:
13501	Assert(rcStrict == VINF_SUCCESS);
13502	break;
13503
13504	case IEMXCPTRAISE_DOUBLE_FAULT:
13505	{
13506	/*
13507	* Determing a vectoring double #PF condition. Used later, when PGM evaluates the
13508	* second #PF as a guest #PF (and not a shadow #PF) and needs to be converted into a #DF.
13509	*/
13510	if (fRaiseInfo & IEMXCPTRAISEINFO_PF_PF)
13511	{
13512	pVmxTransient->fVectoringDoublePF = true;
13513	Log4Func(("IDT: Vectoring double #PF %#RX64 cr2=%#RX64\n", pVCpu->hm.s.Event.u64IntInfo,
13514	pVCpu->cpum.GstCtx.cr2));
13515	rcStrict = VINF_SUCCESS;
13516	}
13517	else
13518	{
13519	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectConvertDF);
13520	hmR0VmxSetPendingXcptDF(pVCpu);
13521	Log4Func(("IDT: Pending vectoring #DF %#RX64 uIdtVector=%#x uExitVector=%#x\n", pVCpu->hm.s.Event.u64IntInfo,
13522	uIdtVector, VMX_EXIT_INT_INFO_VECTOR(uExitIntInfo)));
13523	rcStrict = VINF_HM_DOUBLE_FAULT;
13524	}
13525	break;
13526	}
13527
13528	case IEMXCPTRAISE_TRIPLE_FAULT:
13529	{
13530	Log4Func(("IDT: Pending vectoring triple-fault uIdt=%#x uExit=%#x\n", uIdtVector,
13531	VMX_EXIT_INT_INFO_VECTOR(uExitIntInfo)));
13532	rcStrict = VINF_EM_RESET;
13533	break;
13534	}
13535
13536	case IEMXCPTRAISE_CPU_HANG:
13537	{
13538	Log4Func(("IDT: Bad guest! Entering CPU hang. fRaiseInfo=%#x\n", fRaiseInfo));
13539	rcStrict = VERR_EM_GUEST_CPU_HANG;
13540	break;
13541	}
13542
13543	default:
13544	{
13545	AssertMsgFailed(("IDT: vcpu[%RU32] Unexpected/invalid value! enmRaise=%#x\n", pVCpu->idCpu, enmRaise));
13546	rcStrict = VERR_VMX_IPE_2;
13547	break;
13548	}
13549	}
13550	}
13551	else if ( (pVmcsInfo->u32PinCtls & VMX_PIN_CTLS_VIRT_NMI)
13552	&& !CPUMIsGuestNmiBlocking(pVCpu))
13553	{
13554	if ( VMX_EXIT_INT_INFO_IS_VALID(uExitIntInfo)
13555	&& VMX_EXIT_INT_INFO_VECTOR(uExitIntInfo) != X86_XCPT_DF
13556	&& VMX_EXIT_INT_INFO_IS_NMI_UNBLOCK_IRET(uExitIntInfo))
13557	{
13558	/*
13559	* Execution of IRET caused a fault when NMI blocking was in effect (i.e we're in
13560	* the guest or nested-guest NMI handler). We need to set the block-by-NMI field so
13561	* that virtual NMIs remain blocked until the IRET execution is completed.
13562	*
13563	* See Intel spec. 31.7.1.2 "Resuming Guest Software After Handling An Exception".
13564	*/
13565	CPUMSetGuestNmiBlocking(pVCpu, true);
13566	Log4Func(("Set NMI blocking. uExitReason=%u\n", pVmxTransient->uExitReason));
13567	}
13568	else if ( pVmxTransient->uExitReason == VMX_EXIT_EPT_VIOLATION
13569	\|\| pVmxTransient->uExitReason == VMX_EXIT_PML_FULL
13570	\|\| pVmxTransient->uExitReason == VMX_EXIT_SPP_EVENT)
13571	{
13572	/*
13573	* Execution of IRET caused an EPT violation, page-modification log-full event or
13574	* SPP-related event VM-exit when NMI blocking was in effect (i.e. we're in the
13575	* guest or nested-guest NMI handler). We need to set the block-by-NMI field so
13576	* that virtual NMIs remain blocked until the IRET execution is completed.
13577	*
13578	* See Intel spec. 27.2.3 "Information about NMI unblocking due to IRET"
13579	*/
13580	if (VMX_EXIT_QUAL_EPT_IS_NMI_UNBLOCK_IRET(pVmxTransient->uExitQual))
13581	{
13582	CPUMSetGuestNmiBlocking(pVCpu, true);
13583	Log4Func(("Set NMI blocking. uExitReason=%u\n", pVmxTransient->uExitReason));
13584	}
13585	}
13586	}
13587
13588	Assert( rcStrict == VINF_SUCCESS \|\| rcStrict == VINF_HM_DOUBLE_FAULT
13589	\|\| rcStrict == VINF_EM_RESET \|\| rcStrict == VERR_EM_GUEST_CPU_HANG);
13590	return rcStrict;
13591	}
13592
13593
13594	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
13595	/**
13596	* Perform the relevant VMX instruction checks for VM-exits that occurred due to the
13597	* guest attempting to execute a VMX instruction.
13598	*
13599	* @returns Strict VBox status code (i.e. informational status codes too).
13600	* @retval VINF_SUCCESS if we should continue handling the VM-exit.
13601	* @retval VINF_HM_PENDING_XCPT if an exception was raised.
13602	*
13603	* @param pVCpu The cross context virtual CPU structure.
13604	* @param uExitReason The VM-exit reason.
13605	*
13606	* @todo NSTVMX: Document other error codes when VM-exit is implemented.
13607	* @remarks No-long-jump zone!!!
13608	*/
13609	static VBOXSTRICTRC hmR0VmxCheckExitDueToVmxInstr(PVMCPUCC pVCpu, uint32_t uExitReason)
13610	{
13611	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_SS
13612	\| CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_EFER);
13613
13614	/*
13615	* The physical CPU would have already checked the CPU mode/code segment.
13616	* We shall just assert here for paranoia.
13617	* See Intel spec. 25.1.1 "Relative Priority of Faults and VM Exits".
13618	*/
13619	Assert(!CPUMIsGuestInRealOrV86ModeEx(&pVCpu->cpum.GstCtx));
13620	Assert( !CPUMIsGuestInLongModeEx(&pVCpu->cpum.GstCtx)
13621	\|\| CPUMIsGuestIn64BitCodeEx(&pVCpu->cpum.GstCtx));
13622
13623	if (uExitReason == VMX_EXIT_VMXON)
13624	{
13625	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR4);
13626
13627	/*
13628	* We check CR4.VMXE because it is required to be always set while in VMX operation
13629	* by physical CPUs and our CR4 read-shadow is only consulted when executing specific
13630	* instructions (CLTS, LMSW, MOV CR, and SMSW) and thus doesn't affect CPU operation
13631	* otherwise (i.e. physical CPU won't automatically #UD if Cr4Shadow.VMXE is 0).
13632	*/
13633	if (!CPUMIsGuestVmxEnabled(&pVCpu->cpum.GstCtx))
13634	{
13635	Log4Func(("CR4.VMXE is not set -> #UD\n"));
13636	hmR0VmxSetPendingXcptUD(pVCpu);
13637	return VINF_HM_PENDING_XCPT;
13638	}
13639	}
13640	else if (!CPUMIsGuestInVmxRootMode(&pVCpu->cpum.GstCtx))
13641	{
13642	/*
13643	* The guest has not entered VMX operation but attempted to execute a VMX instruction
13644	* (other than VMXON), we need to raise a #UD.
13645	*/
13646	Log4Func(("Not in VMX root mode -> #UD\n"));
13647	hmR0VmxSetPendingXcptUD(pVCpu);
13648	return VINF_HM_PENDING_XCPT;
13649	}
13650
13651	/* All other checks (including VM-exit intercepts) are handled by IEM instruction emulation. */
13652	return VINF_SUCCESS;
13653	}
13654
13655
13656	/**
13657	* Decodes the memory operand of an instruction that caused a VM-exit.
13658	*
13659	* The Exit qualification field provides the displacement field for memory
13660	* operand instructions, if any.
13661	*
13662	* @returns Strict VBox status code (i.e. informational status codes too).
13663	* @retval VINF_SUCCESS if the operand was successfully decoded.
13664	* @retval VINF_HM_PENDING_XCPT if an exception was raised while decoding the
13665	* operand.
13666	* @param pVCpu The cross context virtual CPU structure.
13667	* @param uExitInstrInfo The VM-exit instruction information field.
13668	* @param enmMemAccess The memory operand's access type (read or write).
13669	* @param GCPtrDisp The instruction displacement field, if any. For
13670	* RIP-relative addressing pass RIP + displacement here.
13671	* @param pGCPtrMem Where to store the effective destination memory address.
13672	*
13673	* @remarks Warning! This function ASSUMES the instruction cannot be used in real or
13674	* virtual-8086 mode hence skips those checks while verifying if the
13675	* segment is valid.
13676	*/
13677	static VBOXSTRICTRC hmR0VmxDecodeMemOperand(PVMCPUCC pVCpu, uint32_t uExitInstrInfo, RTGCPTR GCPtrDisp, VMXMEMACCESS enmMemAccess,
13678	PRTGCPTR pGCPtrMem)
13679	{
13680	Assert(pGCPtrMem);
13681	Assert(!CPUMIsGuestInRealOrV86Mode(pVCpu));
13682	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK \| CPUMCTX_EXTRN_EFER
13683	\| CPUMCTX_EXTRN_CR0);
13684
13685	static uint64_t const s_auAddrSizeMasks[] = { UINT64_C(0xffff), UINT64_C(0xffffffff), UINT64_C(0xffffffffffffffff) };
13686	static uint64_t const s_auAccessSizeMasks[] = { sizeof(uint16_t), sizeof(uint32_t), sizeof(uint64_t) };
13687	AssertCompile(RT_ELEMENTS(s_auAccessSizeMasks) == RT_ELEMENTS(s_auAddrSizeMasks));
13688
13689	VMXEXITINSTRINFO ExitInstrInfo;
13690	ExitInstrInfo.u = uExitInstrInfo;
13691	uint8_t const uAddrSize = ExitInstrInfo.All.u3AddrSize;
13692	uint8_t const iSegReg = ExitInstrInfo.All.iSegReg;
13693	bool const fIdxRegValid = !ExitInstrInfo.All.fIdxRegInvalid;
13694	uint8_t const iIdxReg = ExitInstrInfo.All.iIdxReg;
13695	uint8_t const uScale = ExitInstrInfo.All.u2Scaling;
13696	bool const fBaseRegValid = !ExitInstrInfo.All.fBaseRegInvalid;
13697	uint8_t const iBaseReg = ExitInstrInfo.All.iBaseReg;
13698	bool const fIsMemOperand = !ExitInstrInfo.All.fIsRegOperand;
13699	bool const fIsLongMode = CPUMIsGuestInLongModeEx(&pVCpu->cpum.GstCtx);
13700
13701	/*
13702	* Validate instruction information.
13703	* This shouldn't happen on real hardware but useful while testing our nested hardware-virtualization code.
13704	*/
13705	AssertLogRelMsgReturn(uAddrSize < RT_ELEMENTS(s_auAddrSizeMasks),
13706	("Invalid address size. ExitInstrInfo=%#RX32\n", ExitInstrInfo.u), VERR_VMX_IPE_1);
13707	AssertLogRelMsgReturn(iSegReg < X86_SREG_COUNT,
13708	("Invalid segment register. ExitInstrInfo=%#RX32\n", ExitInstrInfo.u), VERR_VMX_IPE_2);
13709	AssertLogRelMsgReturn(fIsMemOperand,
13710	("Expected memory operand. ExitInstrInfo=%#RX32\n", ExitInstrInfo.u), VERR_VMX_IPE_3);
13711
13712	/*
13713	* Compute the complete effective address.
13714	*
13715	* See AMD instruction spec. 1.4.2 "SIB Byte Format"
13716	* See AMD spec. 4.5.2 "Segment Registers".
13717	*/
13718	RTGCPTR GCPtrMem = GCPtrDisp;
13719	if (fBaseRegValid)
13720	GCPtrMem += pVCpu->cpum.GstCtx.aGRegs[iBaseReg].u64;
13721	if (fIdxRegValid)
13722	GCPtrMem += pVCpu->cpum.GstCtx.aGRegs[iIdxReg].u64 << uScale;
13723
13724	RTGCPTR const GCPtrOff = GCPtrMem;
13725	if ( !fIsLongMode
13726	\|\| iSegReg >= X86_SREG_FS)
13727	GCPtrMem += pVCpu->cpum.GstCtx.aSRegs[iSegReg].u64Base;
13728	GCPtrMem &= s_auAddrSizeMasks[uAddrSize];
13729
13730	/*
13731	* Validate effective address.
13732	* See AMD spec. 4.5.3 "Segment Registers in 64-Bit Mode".
13733	*/
13734	uint8_t const cbAccess = s_auAccessSizeMasks[uAddrSize];
13735	Assert(cbAccess > 0);
13736	if (fIsLongMode)
13737	{
13738	if (X86_IS_CANONICAL(GCPtrMem))
13739	{
13740	*pGCPtrMem = GCPtrMem;
13741	return VINF_SUCCESS;
13742	}
13743
13744	/** @todo r=ramshankar: We should probably raise \#SS or \#GP. See AMD spec. 4.12.2
13745	* "Data Limit Checks in 64-bit Mode". */
13746	Log4Func(("Long mode effective address is not canonical GCPtrMem=%#RX64\n", GCPtrMem));
13747	hmR0VmxSetPendingXcptGP(pVCpu, 0);
13748	return VINF_HM_PENDING_XCPT;
13749	}
13750
13751	/*
13752	* This is a watered down version of iemMemApplySegment().
13753	* Parts that are not applicable for VMX instructions like real-or-v8086 mode
13754	* and segment CPL/DPL checks are skipped.
13755	*/
13756	RTGCPTR32 const GCPtrFirst32 = (RTGCPTR32)GCPtrOff;
13757	RTGCPTR32 const GCPtrLast32 = GCPtrFirst32 + cbAccess - 1;
13758	PCCPUMSELREG pSel = &pVCpu->cpum.GstCtx.aSRegs[iSegReg];
13759
13760	/* Check if the segment is present and usable. */
13761	if ( pSel->Attr.n.u1Present
13762	&& !pSel->Attr.n.u1Unusable)
13763	{
13764	Assert(pSel->Attr.n.u1DescType);
13765	if (!(pSel->Attr.n.u4Type & X86_SEL_TYPE_CODE))
13766	{
13767	/* Check permissions for the data segment. */
13768	if ( enmMemAccess == VMXMEMACCESS_WRITE
13769	&& !(pSel->Attr.n.u4Type & X86_SEL_TYPE_WRITE))
13770	{
13771	Log4Func(("Data segment access invalid. iSegReg=%#x Attr=%#RX32\n", iSegReg, pSel->Attr.u));
13772	hmR0VmxSetPendingXcptGP(pVCpu, iSegReg);
13773	return VINF_HM_PENDING_XCPT;
13774	}
13775
13776	/* Check limits if it's a normal data segment. */
13777	if (!(pSel->Attr.n.u4Type & X86_SEL_TYPE_DOWN))
13778	{
13779	if ( GCPtrFirst32 > pSel->u32Limit
13780	\|\| GCPtrLast32 > pSel->u32Limit)
13781	{
13782	Log4Func(("Data segment limit exceeded. "
13783	"iSegReg=%#x GCPtrFirst32=%#RX32 GCPtrLast32=%#RX32 u32Limit=%#RX32\n", iSegReg, GCPtrFirst32,
13784	GCPtrLast32, pSel->u32Limit));
13785	if (iSegReg == X86_SREG_SS)
13786	hmR0VmxSetPendingXcptSS(pVCpu, 0);
13787	else
13788	hmR0VmxSetPendingXcptGP(pVCpu, 0);
13789	return VINF_HM_PENDING_XCPT;
13790	}
13791	}
13792	else
13793	{
13794	/* Check limits if it's an expand-down data segment.
13795	Note! The upper boundary is defined by the B bit, not the G bit! */
13796	if ( GCPtrFirst32 < pSel->u32Limit + UINT32_C(1)
13797	\|\| GCPtrLast32 > (pSel->Attr.n.u1DefBig ? UINT32_MAX : UINT32_C(0xffff)))
13798	{
13799	Log4Func(("Expand-down data segment limit exceeded. "
13800	"iSegReg=%#x GCPtrFirst32=%#RX32 GCPtrLast32=%#RX32 u32Limit=%#RX32\n", iSegReg, GCPtrFirst32,
13801	GCPtrLast32, pSel->u32Limit));
13802	if (iSegReg == X86_SREG_SS)
13803	hmR0VmxSetPendingXcptSS(pVCpu, 0);
13804	else
13805	hmR0VmxSetPendingXcptGP(pVCpu, 0);
13806	return VINF_HM_PENDING_XCPT;
13807	}
13808	}
13809	}
13810	else
13811	{
13812	/* Check permissions for the code segment. */
13813	if ( enmMemAccess == VMXMEMACCESS_WRITE
13814	\|\| ( enmMemAccess == VMXMEMACCESS_READ
13815	&& !(pSel->Attr.n.u4Type & X86_SEL_TYPE_READ)))
13816	{
13817	Log4Func(("Code segment access invalid. Attr=%#RX32\n", pSel->Attr.u));
13818	Assert(!CPUMIsGuestInRealOrV86ModeEx(&pVCpu->cpum.GstCtx));
13819	hmR0VmxSetPendingXcptGP(pVCpu, 0);
13820	return VINF_HM_PENDING_XCPT;
13821	}
13822
13823	/* Check limits for the code segment (normal/expand-down not applicable for code segments). */
13824	if ( GCPtrFirst32 > pSel->u32Limit
13825	\|\| GCPtrLast32 > pSel->u32Limit)
13826	{
13827	Log4Func(("Code segment limit exceeded. GCPtrFirst32=%#RX32 GCPtrLast32=%#RX32 u32Limit=%#RX32\n",
13828	GCPtrFirst32, GCPtrLast32, pSel->u32Limit));
13829	if (iSegReg == X86_SREG_SS)
13830	hmR0VmxSetPendingXcptSS(pVCpu, 0);
13831	else
13832	hmR0VmxSetPendingXcptGP(pVCpu, 0);
13833	return VINF_HM_PENDING_XCPT;
13834	}
13835	}
13836	}
13837	else
13838	{
13839	Log4Func(("Not present or unusable segment. iSegReg=%#x Attr=%#RX32\n", iSegReg, pSel->Attr.u));
13840	hmR0VmxSetPendingXcptGP(pVCpu, 0);
13841	return VINF_HM_PENDING_XCPT;
13842	}
13843
13844	*pGCPtrMem = GCPtrMem;
13845	return VINF_SUCCESS;
13846	}
13847	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
13848
13849
13850	/**
13851	* VM-exit helper for LMSW.
13852	*/
13853	static VBOXSTRICTRC hmR0VmxExitLmsw(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint8_t cbInstr, uint16_t uMsw, RTGCPTR GCPtrEffDst)
13854	{
13855	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
13856	AssertRCReturn(rc, rc);
13857
13858	VBOXSTRICTRC rcStrict = IEMExecDecodedLmsw(pVCpu, cbInstr, uMsw, GCPtrEffDst);
13859	AssertMsg( rcStrict == VINF_SUCCESS
13860	\|\| rcStrict == VINF_IEM_RAISED_XCPT, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
13861
13862	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_CR0);
13863	if (rcStrict == VINF_IEM_RAISED_XCPT)
13864	{
13865	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
13866	rcStrict = VINF_SUCCESS;
13867	}
13868
13869	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitLmsw);
13870	Log4Func(("rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
13871	return rcStrict;
13872	}
13873
13874
13875	/**
13876	* VM-exit helper for CLTS.
13877	*/
13878	static VBOXSTRICTRC hmR0VmxExitClts(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint8_t cbInstr)
13879	{
13880	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
13881	AssertRCReturn(rc, rc);
13882
13883	VBOXSTRICTRC rcStrict = IEMExecDecodedClts(pVCpu, cbInstr);
13884	AssertMsg( rcStrict == VINF_SUCCESS
13885	\|\| rcStrict == VINF_IEM_RAISED_XCPT, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
13886
13887	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_CR0);
13888	if (rcStrict == VINF_IEM_RAISED_XCPT)
13889	{
13890	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
13891	rcStrict = VINF_SUCCESS;
13892	}
13893
13894	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitClts);
13895	Log4Func(("rcStrict=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
13896	return rcStrict;
13897	}
13898
13899
13900	/**
13901	* VM-exit helper for MOV from CRx (CRx read).
13902	*/
13903	static VBOXSTRICTRC hmR0VmxExitMovFromCrX(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint8_t cbInstr, uint8_t iGReg, uint8_t iCrReg)
13904	{
13905	Assert(iCrReg < 16);
13906	Assert(iGReg < RT_ELEMENTS(pVCpu->cpum.GstCtx.aGRegs));
13907
13908	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
13909	AssertRCReturn(rc, rc);
13910
13911	VBOXSTRICTRC rcStrict = IEMExecDecodedMovCRxRead(pVCpu, cbInstr, iGReg, iCrReg);
13912	AssertMsg( rcStrict == VINF_SUCCESS
13913	\|\| rcStrict == VINF_IEM_RAISED_XCPT, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
13914
13915	if (iGReg == X86_GREG_xSP)
13916	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_RSP);
13917	else
13918	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
13919	#ifdef VBOX_WITH_STATISTICS
13920	switch (iCrReg)
13921	{
13922	case 0: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR0Read); break;
13923	case 2: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR2Read); break;
13924	case 3: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR3Read); break;
13925	case 4: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR4Read); break;
13926	case 8: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR8Read); break;
13927	}
13928	#endif
13929	Log4Func(("CR%d Read access rcStrict=%Rrc\n", iCrReg, VBOXSTRICTRC_VAL(rcStrict)));
13930	return rcStrict;
13931	}
13932
13933
13934	/**
13935	* VM-exit helper for MOV to CRx (CRx write).
13936	*/
13937	static VBOXSTRICTRC hmR0VmxExitMovToCrX(PVMCPUCC pVCpu, PVMXVMCSINFO pVmcsInfo, uint8_t cbInstr, uint8_t iGReg, uint8_t iCrReg)
13938	{
13939	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
13940	AssertRCReturn(rc, rc);
13941
13942	VBOXSTRICTRC rcStrict = IEMExecDecodedMovCRxWrite(pVCpu, cbInstr, iCrReg, iGReg);
13943	AssertMsg( rcStrict == VINF_SUCCESS
13944	\|\| rcStrict == VINF_IEM_RAISED_XCPT
13945	\|\| rcStrict == VINF_PGM_SYNC_CR3, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
13946
13947	switch (iCrReg)
13948	{
13949	case 0:
13950	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_CR0
13951	\| HM_CHANGED_GUEST_EFER_MSR \| HM_CHANGED_VMX_ENTRY_EXIT_CTLS);
13952	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR0Write);
13953	Log4Func(("CR0 write. rcStrict=%Rrc CR0=%#RX64\n", VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cr0));
13954	break;
13955
13956	case 2:
13957	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR2Write);
13958	/* Nothing to do here, CR2 it's not part of the VMCS. */
13959	break;
13960
13961	case 3:
13962	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_CR3);
13963	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR3Write);
13964	Log4Func(("CR3 write. rcStrict=%Rrc CR3=%#RX64\n", VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cr3));
13965	break;
13966
13967	case 4:
13968	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_CR4);
13969	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR4Write);
13970	Log4Func(("CR4 write. rc=%Rrc CR4=%#RX64 fLoadSaveGuestXcr0=%u\n", VBOXSTRICTRC_VAL(rcStrict),
13971	pVCpu->cpum.GstCtx.cr4, pVCpu->hmr0.s.fLoadSaveGuestXcr0));
13972	break;
13973
13974	case 8:
13975	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged,
13976	HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_APIC_TPR);
13977	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR8Write);
13978	break;
13979
13980	default:
13981	AssertMsgFailed(("Invalid CRx register %#x\n", iCrReg));
13982	break;
13983	}
13984
13985	if (rcStrict == VINF_IEM_RAISED_XCPT)
13986	{
13987	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
13988	rcStrict = VINF_SUCCESS;
13989	}
13990	return rcStrict;
13991	}
13992
13993
13994	/**
13995	* VM-exit exception handler for \#PF (Page-fault exception).
13996	*
13997	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
13998	*/
13999	static VBOXSTRICTRC hmR0VmxExitXcptPF(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14000	{
14001	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14002	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
14003	hmR0VmxReadExitQualVmcs(pVmxTransient);
14004
14005	if (!pVM->hmr0.s.fNestedPaging)
14006	{ /* likely */ }
14007	else
14008	{
14009	#if !defined(HMVMX_ALWAYS_TRAP_ALL_XCPTS) && !defined(HMVMX_ALWAYS_TRAP_PF)
14010	Assert(pVmxTransient->fIsNestedGuest \|\| pVCpu->hmr0.s.fUsingDebugLoop);
14011	#endif
14012	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
14013	if (!pVmxTransient->fVectoringDoublePF)
14014	{
14015	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo), 0 /* cbInstr */,
14016	pVmxTransient->uExitIntErrorCode, pVmxTransient->uExitQual);
14017	}
14018	else
14019	{
14020	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
14021	Assert(!pVmxTransient->fIsNestedGuest);
14022	hmR0VmxSetPendingXcptDF(pVCpu);
14023	Log4Func(("Pending #DF due to vectoring #PF w/ NestedPaging\n"));
14024	}
14025	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
14026	return VINF_SUCCESS;
14027	}
14028
14029	Assert(!pVmxTransient->fIsNestedGuest);
14030
14031	/* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
14032	of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
14033	if (pVmxTransient->fVectoringPF)
14034	{
14035	Assert(pVCpu->hm.s.Event.fPending);
14036	return VINF_EM_RAW_INJECT_TRPM_EVENT;
14037	}
14038
14039	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
14040	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14041	AssertRCReturn(rc, rc);
14042
14043	Log4Func(("#PF: cs:rip=%#04x:%#RX64 err_code=%#RX32 exit_qual=%#RX64 cr3=%#RX64\n", pCtx->cs.Sel, pCtx->rip,
14044	pVmxTransient->uExitIntErrorCode, pVmxTransient->uExitQual, pCtx->cr3));
14045
14046	TRPMAssertXcptPF(pVCpu, pVmxTransient->uExitQual, (RTGCUINT)pVmxTransient->uExitIntErrorCode);
14047	rc = PGMTrap0eHandler(pVCpu, pVmxTransient->uExitIntErrorCode, CPUMCTX2CORE(pCtx), (RTGCPTR)pVmxTransient->uExitQual);
14048
14049	Log4Func(("#PF: rc=%Rrc\n", rc));
14050	if (rc == VINF_SUCCESS)
14051	{
14052	/*
14053	* This is typically a shadow page table sync or a MMIO instruction. But we may have
14054	* emulated something like LTR or a far jump. Any part of the CPU context may have changed.
14055	*/
14056	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
14057	TRPMResetTrap(pVCpu);
14058	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
14059	return rc;
14060	}
14061
14062	if (rc == VINF_EM_RAW_GUEST_TRAP)
14063	{
14064	if (!pVmxTransient->fVectoringDoublePF)
14065	{
14066	/* It's a guest page fault and needs to be reflected to the guest. */
14067	uint32_t const uGstErrorCode = TRPMGetErrorCode(pVCpu);
14068	TRPMResetTrap(pVCpu);
14069	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory #PF. */
14070	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo), 0 /* cbInstr */,
14071	uGstErrorCode, pVmxTransient->uExitQual);
14072	}
14073	else
14074	{
14075	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
14076	TRPMResetTrap(pVCpu);
14077	pVCpu->hm.s.Event.fPending = false; /* Clear pending #PF to replace it with #DF. */
14078	hmR0VmxSetPendingXcptDF(pVCpu);
14079	Log4Func(("#PF: Pending #DF due to vectoring #PF\n"));
14080	}
14081
14082	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
14083	return VINF_SUCCESS;
14084	}
14085
14086	TRPMResetTrap(pVCpu);
14087	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
14088	return rc;
14089	}
14090
14091
14092	/**
14093	* VM-exit exception handler for \#MF (Math Fault: floating point exception).
14094	*
14095	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
14096	*/
14097	static VBOXSTRICTRC hmR0VmxExitXcptMF(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14098	{
14099	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14100	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
14101
14102	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CR0);
14103	AssertRCReturn(rc, rc);
14104
14105	if (!(pVCpu->cpum.GstCtx.cr0 & X86_CR0_NE))
14106	{
14107	/* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
14108	rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13, 1, 0 /* uTagSrc */);
14109
14110	/** @todo r=ramshankar: The Intel spec. does -not- specify that this VM-exit
14111	* provides VM-exit instruction length. If this causes problem later,
14112	* disassemble the instruction like it's done on AMD-V. */
14113	int rc2 = hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
14114	AssertRCReturn(rc2, rc2);
14115	return rc;
14116	}
14117
14118	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo), pVmxTransient->cbExitInstr,
14119	pVmxTransient->uExitIntErrorCode, 0 /* GCPtrFaultAddress */);
14120	return VINF_SUCCESS;
14121	}
14122
14123
14124	/**
14125	* VM-exit exception handler for \#BP (Breakpoint exception).
14126	*
14127	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
14128	*/
14129	static VBOXSTRICTRC hmR0VmxExitXcptBP(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14130	{
14131	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14132	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestBP);
14133
14134	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14135	AssertRCReturn(rc, rc);
14136
14137	if (!pVmxTransient->fIsNestedGuest)
14138	rc = DBGFTrap03Handler(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(&pVCpu->cpum.GstCtx));
14139	else
14140	rc = VINF_EM_RAW_GUEST_TRAP;
14141
14142	if (rc == VINF_EM_RAW_GUEST_TRAP)
14143	{
14144	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo),
14145	pVmxTransient->cbExitInstr, pVmxTransient->uExitIntErrorCode, 0 /* GCPtrFaultAddress */);
14146	rc = VINF_SUCCESS;
14147	}
14148
14149	Assert(rc == VINF_SUCCESS \|\| rc == VINF_EM_DBG_BREAKPOINT);
14150	return rc;
14151	}
14152
14153
14154	/**
14155	* VM-exit exception handler for \#AC (Alignment-check exception).
14156	*
14157	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
14158	*/
14159	static VBOXSTRICTRC hmR0VmxExitXcptAC(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14160	{
14161	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14162
14163	/*
14164	* Detect #ACs caused by host having enabled split-lock detection.
14165	* Emulate such instructions.
14166	*/
14167	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo,
14168	CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_SS \| CPUMCTX_EXTRN_CS);
14169	AssertRCReturn(rc, rc);
14170	/** @todo detect split lock in cpu feature? */
14171	if ( /* 1. If 486-style alignment checks aren't enabled, then this must be a split-lock exception */
14172	!(pVCpu->cpum.GstCtx.cr0 & X86_CR0_AM)
14173	/* 2. #AC cannot happen in rings 0-2 except for split-lock detection. */
14174	\|\| CPUMGetGuestCPL(pVCpu) != 3
14175	/* 3. When the EFLAGS.AC != 0 this can only be a split-lock case. */
14176	\|\| !(pVCpu->cpum.GstCtx.eflags.u & X86_EFL_AC) )
14177	{
14178	/*
14179	* Check for debug/trace events and import state accordingly.
14180	*/
14181	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitGuestACSplitLock);
14182	PVMCC pVM = pVCpu->pVMR0;
14183	if ( !DBGF_IS_EVENT_ENABLED(pVM, DBGFEVENT_VMX_SPLIT_LOCK)
14184	&& !VBOXVMM_VMX_SPLIT_LOCK_ENABLED())
14185	{
14186	if (pVM->cCpus == 1)
14187	{
14188	#if 0 /** @todo r=bird: This is potentially wrong. Might have to just do a whole state sync above and mark everything changed to be safe... */
14189	rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
14190	#else
14191	rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14192	#endif
14193	AssertRCReturn(rc, rc);
14194	}
14195	}
14196	else
14197	{
14198	rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14199	AssertRCReturn(rc, rc);
14200
14201	VBOXVMM_XCPT_DF(pVCpu, &pVCpu->cpum.GstCtx);
14202
14203	if (DBGF_IS_EVENT_ENABLED(pVM, DBGFEVENT_VMX_SPLIT_LOCK))
14204	{
14205	VBOXSTRICTRC rcStrict = DBGFEventGenericWithArgs(pVM, pVCpu, DBGFEVENT_VMX_SPLIT_LOCK, DBGFEVENTCTX_HM, 0);
14206	if (rcStrict != VINF_SUCCESS)
14207	return rcStrict;
14208	}
14209	}
14210
14211	/*
14212	* Emulate the instruction.
14213	*
14214	* We have to ignore the LOCK prefix here as we must not retrigger the
14215	* detection on the host. This isn't all that satisfactory, though...
14216	*/
14217	if (pVM->cCpus == 1)
14218	{
14219	Log8Func(("cs:rip=%#04x:%#RX64 rflags=%#RX64 cr0=%#RX64 split-lock #AC\n", pVCpu->cpum.GstCtx.cs.Sel,
14220	pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.rflags, pVCpu->cpum.GstCtx.cr0));
14221
14222	/** @todo For SMP configs we should do a rendezvous here. */
14223	VBOXSTRICTRC rcStrict = IEMExecOneIgnoreLock(pVCpu);
14224	if (rcStrict == VINF_SUCCESS)
14225	#if 0 /** @todo r=bird: This is potentially wrong. Might have to just do a whole state sync above and mark everything changed to be safe... */
14226	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged,
14227	HM_CHANGED_GUEST_RIP
14228	\| HM_CHANGED_GUEST_RFLAGS
14229	\| HM_CHANGED_GUEST_GPRS_MASK
14230	\| HM_CHANGED_GUEST_CS
14231	\| HM_CHANGED_GUEST_SS);
14232	#else
14233	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
14234	#endif
14235	else if (rcStrict == VINF_IEM_RAISED_XCPT)
14236	{
14237	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
14238	rcStrict = VINF_SUCCESS;
14239	}
14240	return rcStrict;
14241	}
14242	Log8Func(("cs:rip=%#04x:%#RX64 rflags=%#RX64 cr0=%#RX64 split-lock #AC -> VINF_EM_EMULATE_SPLIT_LOCK\n",
14243	pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.rflags, pVCpu->cpum.GstCtx.cr0));
14244	return VINF_EM_EMULATE_SPLIT_LOCK;
14245	}
14246
14247	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitGuestAC);
14248	Log8Func(("cs:rip=%#04x:%#RX64 rflags=%#RX64 cr0=%#RX64 cpl=%d -> #AC\n", pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
14249	pVCpu->cpum.GstCtx.rflags, pVCpu->cpum.GstCtx.cr0, CPUMGetGuestCPL(pVCpu) ));
14250
14251	/* Re-inject it. We'll detect any nesting before getting here. */
14252	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo),
14253	pVmxTransient->cbExitInstr, pVmxTransient->uExitIntErrorCode, 0 /* GCPtrFaultAddress */);
14254	return VINF_SUCCESS;
14255	}
14256
14257
14258	/**
14259	* VM-exit exception handler for \#DB (Debug exception).
14260	*
14261	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
14262	*/
14263	static VBOXSTRICTRC hmR0VmxExitXcptDB(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14264	{
14265	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14266	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
14267
14268	/*
14269	* Get the DR6-like values from the Exit qualification and pass it to DBGF for processing.
14270	*/
14271	hmR0VmxReadExitQualVmcs(pVmxTransient);
14272
14273	/* Refer Intel spec. Table 27-1. "Exit Qualifications for debug exceptions" for the format. */
14274	uint64_t const uDR6 = X86_DR6_INIT_VAL
14275	\| (pVmxTransient->uExitQual & ( X86_DR6_B0 \| X86_DR6_B1 \| X86_DR6_B2 \| X86_DR6_B3
14276	\| X86_DR6_BD \| X86_DR6_BS));
14277
14278	int rc;
14279	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
14280	if (!pVmxTransient->fIsNestedGuest)
14281	{
14282	rc = DBGFTrap01Handler(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx), uDR6, pVCpu->hm.s.fSingleInstruction);
14283
14284	/*
14285	* Prevents stepping twice over the same instruction when the guest is stepping using
14286	* EFLAGS.TF and the hypervisor debugger is stepping using MTF.
14287	* Testcase: DOSQEMM, break (using "ba x 1") at cs:rip 0x70:0x774 and step (using "t").
14288	*/
14289	if ( rc == VINF_EM_DBG_STEPPED
14290	&& (pVmxTransient->pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_MONITOR_TRAP_FLAG))
14291	{
14292	Assert(pVCpu->hm.s.fSingleInstruction);
14293	rc = VINF_EM_RAW_GUEST_TRAP;
14294	}
14295	}
14296	else
14297	rc = VINF_EM_RAW_GUEST_TRAP;
14298	Log6Func(("rc=%Rrc\n", rc));
14299	if (rc == VINF_EM_RAW_GUEST_TRAP)
14300	{
14301	/*
14302	* The exception was for the guest. Update DR6, DR7.GD and
14303	* IA32_DEBUGCTL.LBR before forwarding it.
14304	* See Intel spec. 27.1 "Architectural State before a VM-Exit".
14305	*/
14306	VMMRZCallRing3Disable(pVCpu);
14307	HM_DISABLE_PREEMPT(pVCpu);
14308
14309	pCtx->dr[6] &= ~X86_DR6_B_MASK;
14310	pCtx->dr[6] \|= uDR6;
14311	if (CPUMIsGuestDebugStateActive(pVCpu))
14312	ASMSetDR6(pCtx->dr[6]);
14313
14314	HM_RESTORE_PREEMPT();
14315	VMMRZCallRing3Enable(pVCpu);
14316
14317	rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_DR7);
14318	AssertRCReturn(rc, rc);
14319
14320	/* X86_DR7_GD will be cleared if DRx accesses should be trapped inside the guest. */
14321	pCtx->dr[7] &= ~(uint64_t)X86_DR7_GD;
14322
14323	/* Paranoia. */
14324	pCtx->dr[7] &= ~(uint64_t)X86_DR7_RAZ_MASK;
14325	pCtx->dr[7] \|= X86_DR7_RA1_MASK;
14326
14327	rc = VMXWriteVmcsNw(VMX_VMCS_GUEST_DR7, pCtx->dr[7]);
14328	AssertRC(rc);
14329
14330	/*
14331	* Raise #DB in the guest.
14332	*
14333	* It is important to reflect exactly what the VM-exit gave us (preserving the
14334	* interruption-type) rather than use hmR0VmxSetPendingXcptDB() as the #DB could've
14335	* been raised while executing ICEBP (INT1) and not the regular #DB. Thus it may
14336	* trigger different handling in the CPU (like skipping DPL checks), see @bugref{6398}.
14337	*
14338	* Intel re-documented ICEBP/INT1 on May 2018 previously documented as part of
14339	* Intel 386, see Intel spec. 24.8.3 "VM-Entry Controls for Event Injection".
14340	*/
14341	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo),
14342	pVmxTransient->cbExitInstr, pVmxTransient->uExitIntErrorCode, 0 /* GCPtrFaultAddress */);
14343	return VINF_SUCCESS;
14344	}
14345
14346	/*
14347	* Not a guest trap, must be a hypervisor related debug event then.
14348	* Update DR6 in case someone is interested in it.
14349	*/
14350	AssertMsg(rc == VINF_EM_DBG_STEPPED \|\| rc == VINF_EM_DBG_BREAKPOINT, ("%Rrc\n", rc));
14351	AssertReturn(pVmxTransient->fWasHyperDebugStateActive, VERR_HM_IPE_5);
14352	CPUMSetHyperDR6(pVCpu, uDR6);
14353
14354	return rc;
14355	}
14356
14357
14358	/**
14359	* Hacks its way around the lovely mesa driver's backdoor accesses.
14360	*
14361	* @sa hmR0SvmHandleMesaDrvGp.
14362	*/
14363	static int hmR0VmxHandleMesaDrvGp(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, PCPUMCTX pCtx)
14364	{
14365	LogFunc(("cs:rip=%#04x:%#RX64 rcx=%#RX64 rbx=%#RX64\n", pCtx->cs.Sel, pCtx->rip, pCtx->rcx, pCtx->rbx));
14366	RT_NOREF(pCtx);
14367
14368	/* For now we'll just skip the instruction. */
14369	return hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
14370	}
14371
14372
14373	/**
14374	* Checks if the \#GP'ing instruction is the mesa driver doing it's lovely
14375	* backdoor logging w/o checking what it is running inside.
14376	*
14377	* This recognizes an "IN EAX,DX" instruction executed in flat ring-3, with the
14378	* backdoor port and magic numbers loaded in registers.
14379	*
14380	* @returns true if it is, false if it isn't.
14381	* @sa hmR0SvmIsMesaDrvGp.
14382	*/
14383	DECLINLINE(bool) hmR0VmxIsMesaDrvGp(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient, PCPUMCTX pCtx)
14384	{
14385	/* 0xed: IN eAX,dx */
14386	uint8_t abInstr[1];
14387	if (pVmxTransient->cbExitInstr != sizeof(abInstr))
14388	return false;
14389
14390	/* Check that it is #GP(0). */
14391	if (pVmxTransient->uExitIntErrorCode != 0)
14392	return false;
14393
14394	/* Check magic and port. */
14395	Assert(!(pCtx->fExtrn & (CPUMCTX_EXTRN_RAX \| CPUMCTX_EXTRN_RDX \| CPUMCTX_EXTRN_RCX)));
14396	/Log(("hmR0VmxIsMesaDrvGp: rax=%RX64 rdx=%RX64\n", pCtx->rax, pCtx->rdx));/
14397	if (pCtx->rax != UINT32_C(0x564d5868))
14398	return false;
14399	if (pCtx->dx != UINT32_C(0x5658))
14400	return false;
14401
14402	/* Flat ring-3 CS. */
14403	AssertCompile(HMVMX_CPUMCTX_EXTRN_ALL & CPUMCTX_EXTRN_CS);
14404	Assert(!(pCtx->fExtrn & CPUMCTX_EXTRN_CS));
14405	/Log(("hmR0VmxIsMesaDrvGp: cs.Attr.n.u2Dpl=%d base=%Rx64\n", pCtx->cs.Attr.n.u2Dpl, pCtx->cs.u64Base));/
14406	if (pCtx->cs.Attr.n.u2Dpl != 3)
14407	return false;
14408	if (pCtx->cs.u64Base != 0)
14409	return false;
14410
14411	/* Check opcode. */
14412	AssertCompile(HMVMX_CPUMCTX_EXTRN_ALL & CPUMCTX_EXTRN_RIP);
14413	Assert(!(pCtx->fExtrn & CPUMCTX_EXTRN_RIP));
14414	int rc = PGMPhysSimpleReadGCPtr(pVCpu, abInstr, pCtx->rip, sizeof(abInstr));
14415	/Log(("hmR0VmxIsMesaDrvGp: PGMPhysSimpleReadGCPtr -> %Rrc %#x\n", rc, abInstr[0]));/
14416	if (RT_FAILURE(rc))
14417	return false;
14418	if (abInstr[0] != 0xed)
14419	return false;
14420
14421	return true;
14422	}
14423
14424
14425	/**
14426	* VM-exit exception handler for \#GP (General-protection exception).
14427	*
14428	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
14429	*/
14430	static VBOXSTRICTRC hmR0VmxExitXcptGP(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14431	{
14432	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14433	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestGP);
14434
14435	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
14436	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14437	PVMXVMCSINFOSHARED pVmcsInfoShared = pVmcsInfo->pShared;
14438	if (pVmcsInfoShared->RealMode.fRealOnV86Active)
14439	{ /* likely */ }
14440	else
14441	{
14442	#ifndef HMVMX_ALWAYS_TRAP_ALL_XCPTS
14443	Assert(pVCpu->hmr0.s.fUsingDebugLoop \|\| pVCpu->hm.s.fTrapXcptGpForLovelyMesaDrv \|\| pVmxTransient->fIsNestedGuest);
14444	#endif
14445	/*
14446	* If the guest is not in real-mode or we have unrestricted guest execution support, or if we are
14447	* executing a nested-guest, reflect #GP to the guest or nested-guest.
14448	*/
14449	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14450	AssertRCReturn(rc, rc);
14451	Log4Func(("Gst: cs:rip=%#04x:%#RX64 ErrorCode=%#x cr0=%#RX64 cpl=%u tr=%#04x\n", pCtx->cs.Sel, pCtx->rip,
14452	pVmxTransient->uExitIntErrorCode, pCtx->cr0, CPUMGetGuestCPL(pVCpu), pCtx->tr.Sel));
14453
14454	if ( pVmxTransient->fIsNestedGuest
14455	\|\| !pVCpu->hm.s.fTrapXcptGpForLovelyMesaDrv
14456	\|\| !hmR0VmxIsMesaDrvGp(pVCpu, pVmxTransient, pCtx))
14457	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo),
14458	pVmxTransient->cbExitInstr, pVmxTransient->uExitIntErrorCode, 0 /* GCPtrFaultAddress */);
14459	else
14460	rc = hmR0VmxHandleMesaDrvGp(pVCpu, pVmxTransient, pCtx);
14461	return rc;
14462	}
14463
14464	Assert(CPUMIsGuestInRealModeEx(pCtx));
14465	Assert(!pVCpu->CTX_SUFF(pVM)->hmr0.s.vmx.fUnrestrictedGuest);
14466	Assert(!pVmxTransient->fIsNestedGuest);
14467
14468	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14469	AssertRCReturn(rc, rc);
14470
14471	VBOXSTRICTRC rcStrict = IEMExecOne(pVCpu);
14472	if (rcStrict == VINF_SUCCESS)
14473	{
14474	if (!CPUMIsGuestInRealModeEx(pCtx))
14475	{
14476	/*
14477	* The guest is no longer in real-mode, check if we can continue executing the
14478	* guest using hardware-assisted VMX. Otherwise, fall back to emulation.
14479	*/
14480	pVmcsInfoShared->RealMode.fRealOnV86Active = false;
14481	if (HMCanExecuteVmxGuest(pVCpu->pVMR0, pVCpu, pCtx))
14482	{
14483	Log4Func(("Mode changed but guest still suitable for executing using hardware-assisted VMX\n"));
14484	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
14485	}
14486	else
14487	{
14488	Log4Func(("Mode changed -> VINF_EM_RESCHEDULE\n"));
14489	rcStrict = VINF_EM_RESCHEDULE;
14490	}
14491	}
14492	else
14493	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
14494	}
14495	else if (rcStrict == VINF_IEM_RAISED_XCPT)
14496	{
14497	rcStrict = VINF_SUCCESS;
14498	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
14499	}
14500	return VBOXSTRICTRC_VAL(rcStrict);
14501	}
14502
14503
14504	/**
14505	* VM-exit exception handler wrapper for all other exceptions that are not handled
14506	* by a specific handler.
14507	*
14508	* This simply re-injects the exception back into the VM without any special
14509	* processing.
14510	*
14511	* @remarks Requires all fields in HMVMX_READ_XCPT_INFO to be read from the VMCS.
14512	*/
14513	static VBOXSTRICTRC hmR0VmxExitXcptOthers(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14514	{
14515	HMVMX_VALIDATE_EXIT_XCPT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14516
14517	#ifndef HMVMX_ALWAYS_TRAP_ALL_XCPTS
14518	PCVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14519	AssertMsg(pVCpu->hmr0.s.fUsingDebugLoop \|\| pVmcsInfo->pShared->RealMode.fRealOnV86Active \|\| pVmxTransient->fIsNestedGuest,
14520	("uVector=%#x u32XcptBitmap=%#X32\n",
14521	VMX_EXIT_INT_INFO_VECTOR(pVmxTransient->uExitIntInfo), pVmcsInfo->u32XcptBitmap));
14522	NOREF(pVmcsInfo);
14523	#endif
14524
14525	/*
14526	* Re-inject the exception into the guest. This cannot be a double-fault condition which
14527	* would have been handled while checking exits due to event delivery.
14528	*/
14529	uint8_t const uVector = VMX_EXIT_INT_INFO_VECTOR(pVmxTransient->uExitIntInfo);
14530
14531	#ifdef HMVMX_ALWAYS_TRAP_ALL_XCPTS
14532	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
14533	AssertRCReturn(rc, rc);
14534	Log4Func(("Reinjecting Xcpt. uVector=%#x cs:rip=%#04x:%#RX64\n", uVector, pCtx->cs.Sel, pCtx->rip));
14535	#endif
14536
14537	#ifdef VBOX_WITH_STATISTICS
14538	switch (uVector)
14539	{
14540	case X86_XCPT_DE: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDE); break;
14541	case X86_XCPT_DB: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB); break;
14542	case X86_XCPT_BP: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestBP); break;
14543	case X86_XCPT_OF: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestOF); break;
14544	case X86_XCPT_BR: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestBR); break;
14545	case X86_XCPT_UD: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD); break;
14546	case X86_XCPT_NM: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestOF); break;
14547	case X86_XCPT_DF: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDF); break;
14548	case X86_XCPT_TS: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestTS); break;
14549	case X86_XCPT_NP: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNP); break;
14550	case X86_XCPT_SS: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestSS); break;
14551	case X86_XCPT_GP: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestGP); break;
14552	case X86_XCPT_PF: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF); break;
14553	case X86_XCPT_MF: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF); break;
14554	case X86_XCPT_AC: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestAC); break;
14555	case X86_XCPT_XF: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestXF); break;
14556	default:
14557	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestXcpUnk);
14558	break;
14559	}
14560	#endif
14561
14562	/* We should never call this function for a page-fault, we'd need to pass on the fault address below otherwise. */
14563	Assert(!VMX_EXIT_INT_INFO_IS_XCPT_PF(pVmxTransient->uExitIntInfo));
14564	NOREF(uVector);
14565
14566	/* Re-inject the original exception into the guest. */
14567	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_INT_INFO(pVmxTransient->uExitIntInfo),
14568	pVmxTransient->cbExitInstr, pVmxTransient->uExitIntErrorCode, 0 /* GCPtrFaultAddress */);
14569	return VINF_SUCCESS;
14570	}
14571
14572
14573	/**
14574	* VM-exit exception handler for all exceptions (except NMIs!).
14575	*
14576	* @remarks This may be called for both guests and nested-guests. Take care to not
14577	* make assumptions and avoid doing anything that is not relevant when
14578	* executing a nested-guest (e.g., Mesa driver hacks).
14579	*/
14580	static VBOXSTRICTRC hmR0VmxExitXcpt(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14581	{
14582	HMVMX_ASSERT_READ(pVmxTransient, HMVMX_READ_XCPT_INFO);
14583
14584	/*
14585	* If this VM-exit occurred while delivering an event through the guest IDT, take
14586	* action based on the return code and additional hints (e.g. for page-faults)
14587	* that will be updated in the VMX transient structure.
14588	*/
14589	VBOXSTRICTRC rcStrict = hmR0VmxCheckExitDueToEventDelivery(pVCpu, pVmxTransient);
14590	if (rcStrict == VINF_SUCCESS)
14591	{
14592	/*
14593	* If an exception caused a VM-exit due to delivery of an event, the original
14594	* event may have to be re-injected into the guest. We shall reinject it and
14595	* continue guest execution. However, page-fault is a complicated case and
14596	* needs additional processing done in hmR0VmxExitXcptPF().
14597	*/
14598	Assert(VMX_EXIT_INT_INFO_IS_VALID(pVmxTransient->uExitIntInfo));
14599	uint8_t const uVector = VMX_EXIT_INT_INFO_VECTOR(pVmxTransient->uExitIntInfo);
14600	if ( !pVCpu->hm.s.Event.fPending
14601	\|\| uVector == X86_XCPT_PF)
14602	{
14603	switch (uVector)
14604	{
14605	case X86_XCPT_PF: return hmR0VmxExitXcptPF(pVCpu, pVmxTransient);
14606	case X86_XCPT_GP: return hmR0VmxExitXcptGP(pVCpu, pVmxTransient);
14607	case X86_XCPT_MF: return hmR0VmxExitXcptMF(pVCpu, pVmxTransient);
14608	case X86_XCPT_DB: return hmR0VmxExitXcptDB(pVCpu, pVmxTransient);
14609	case X86_XCPT_BP: return hmR0VmxExitXcptBP(pVCpu, pVmxTransient);
14610	case X86_XCPT_AC: return hmR0VmxExitXcptAC(pVCpu, pVmxTransient);
14611	default:
14612	return hmR0VmxExitXcptOthers(pVCpu, pVmxTransient);
14613	}
14614	}
14615	/* else: inject pending event before resuming guest execution. */
14616	}
14617	else if (rcStrict == VINF_HM_DOUBLE_FAULT)
14618	{
14619	Assert(pVCpu->hm.s.Event.fPending);
14620	rcStrict = VINF_SUCCESS;
14621	}
14622
14623	return rcStrict;
14624	}
14625	/** @} */
14626
14627
14628	/** @name VM-exit handlers.
14629	* @{
14630	*/
14631	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
14632	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- VM-exit handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
14633	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
14634
14635	/**
14636	* VM-exit handler for external interrupts (VMX_EXIT_EXT_INT).
14637	*/
14638	HMVMX_EXIT_DECL hmR0VmxExitExtInt(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14639	{
14640	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14641	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
14642	/* Windows hosts (32-bit and 64-bit) have DPC latency issues. See @bugref{6853}. */
14643	if (VMMR0ThreadCtxHookIsEnabled(pVCpu))
14644	return VINF_SUCCESS;
14645	return VINF_EM_RAW_INTERRUPT;
14646	}
14647
14648
14649	/**
14650	* VM-exit handler for exceptions or NMIs (VMX_EXIT_XCPT_OR_NMI). Conditional
14651	* VM-exit.
14652	*/
14653	HMVMX_EXIT_DECL hmR0VmxExitXcptOrNmi(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14654	{
14655	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14656	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExitXcptNmi, y3);
14657
14658	hmR0VmxReadExitIntInfoVmcs(pVmxTransient);
14659
14660	uint32_t const uExitIntType = VMX_EXIT_INT_INFO_TYPE(pVmxTransient->uExitIntInfo);
14661	uint8_t const uVector = VMX_EXIT_INT_INFO_VECTOR(pVmxTransient->uExitIntInfo);
14662	Assert(VMX_EXIT_INT_INFO_IS_VALID(pVmxTransient->uExitIntInfo));
14663
14664	PCVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14665	Assert( !(pVmcsInfo->u32ExitCtls & VMX_EXIT_CTLS_ACK_EXT_INT)
14666	&& uExitIntType != VMX_EXIT_INT_INFO_TYPE_EXT_INT);
14667	NOREF(pVmcsInfo);
14668
14669	VBOXSTRICTRC rcStrict;
14670	switch (uExitIntType)
14671	{
14672	/*
14673	* Host physical NMIs:
14674	* This cannot be a guest NMI as the only way for the guest to receive an NMI is if we
14675	* injected it ourselves and anything we inject is not going to cause a VM-exit directly
14676	* for the event being injected[1]. Go ahead and dispatch the NMI to the host[2].
14677	*
14678	* See Intel spec. 27.2.3 "Information for VM Exits During Event Delivery".
14679	* See Intel spec. 27.5.5 "Updating Non-Register State".
14680	*/
14681	case VMX_EXIT_INT_INFO_TYPE_NMI:
14682	{
14683	rcStrict = hmR0VmxExitHostNmi(pVCpu, pVmcsInfo);
14684	break;
14685	}
14686
14687	/*
14688	* Privileged software exceptions (#DB from ICEBP),
14689	* Software exceptions (#BP and #OF),
14690	* Hardware exceptions:
14691	* Process the required exceptions and resume guest execution if possible.
14692	*/
14693	case VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT:
14694	Assert(uVector == X86_XCPT_DB);
14695	RT_FALL_THRU();
14696	case VMX_EXIT_INT_INFO_TYPE_SW_XCPT:
14697	Assert(uVector == X86_XCPT_BP \|\| uVector == X86_XCPT_OF \|\| uExitIntType == VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT);
14698	RT_FALL_THRU();
14699	case VMX_EXIT_INT_INFO_TYPE_HW_XCPT:
14700	{
14701	NOREF(uVector);
14702	hmR0VmxReadExitIntErrorCodeVmcs(pVmxTransient);
14703	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
14704	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
14705	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
14706
14707	rcStrict = hmR0VmxExitXcpt(pVCpu, pVmxTransient);
14708	break;
14709	}
14710
14711	default:
14712	{
14713	pVCpu->hm.s.u32HMError = pVmxTransient->uExitIntInfo;
14714	rcStrict = VERR_VMX_UNEXPECTED_INTERRUPTION_EXIT_TYPE;
14715	AssertMsgFailed(("Invalid/unexpected VM-exit interruption info %#x\n", pVmxTransient->uExitIntInfo));
14716	break;
14717	}
14718	}
14719
14720	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitXcptNmi, y3);
14721	return rcStrict;
14722	}
14723
14724
14725	/**
14726	* VM-exit handler for interrupt-window exiting (VMX_EXIT_INT_WINDOW).
14727	*/
14728	HMVMX_EXIT_NSRC_DECL hmR0VmxExitIntWindow(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14729	{
14730	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14731
14732	/* Indicate that we no longer need to VM-exit when the guest is ready to receive interrupts, it is now ready. */
14733	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14734	hmR0VmxClearIntWindowExitVmcs(pVmcsInfo);
14735
14736	/* Evaluate and deliver pending events and resume guest execution. */
14737	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
14738	return VINF_SUCCESS;
14739	}
14740
14741
14742	/**
14743	* VM-exit handler for NMI-window exiting (VMX_EXIT_NMI_WINDOW).
14744	*/
14745	HMVMX_EXIT_NSRC_DECL hmR0VmxExitNmiWindow(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14746	{
14747	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14748
14749	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14750	if (RT_UNLIKELY(!(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_NMI_WINDOW_EXIT))) /** @todo NSTVMX: Turn this into an assertion. */
14751	{
14752	AssertMsgFailed(("Unexpected NMI-window exit.\n"));
14753	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, pVmxTransient->uExitReason);
14754	}
14755
14756	Assert(!CPUMIsGuestNmiBlocking(pVCpu));
14757
14758	/*
14759	* If block-by-STI is set when we get this VM-exit, it means the CPU doesn't block NMIs following STI.
14760	* It is therefore safe to unblock STI and deliver the NMI ourselves. See @bugref{7445}.
14761	*/
14762	uint32_t fIntrState;
14763	int rc = VMXReadVmcs32(VMX_VMCS32_GUEST_INT_STATE, &fIntrState);
14764	AssertRC(rc);
14765	Assert(!(fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_MOVSS));
14766	if (fIntrState & VMX_VMCS_GUEST_INT_STATE_BLOCK_STI)
14767	{
14768	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
14769	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
14770
14771	fIntrState &= ~VMX_VMCS_GUEST_INT_STATE_BLOCK_STI;
14772	rc = VMXWriteVmcs32(VMX_VMCS32_GUEST_INT_STATE, fIntrState);
14773	AssertRC(rc);
14774	}
14775
14776	/* Indicate that we no longer need to VM-exit when the guest is ready to receive NMIs, it is now ready */
14777	hmR0VmxClearNmiWindowExitVmcs(pVmcsInfo);
14778
14779	/* Evaluate and deliver pending events and resume guest execution. */
14780	return VINF_SUCCESS;
14781	}
14782
14783
14784	/**
14785	* VM-exit handler for WBINVD (VMX_EXIT_WBINVD). Conditional VM-exit.
14786	*/
14787	HMVMX_EXIT_NSRC_DECL hmR0VmxExitWbinvd(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14788	{
14789	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14790	return hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
14791	}
14792
14793
14794	/**
14795	* VM-exit handler for INVD (VMX_EXIT_INVD). Unconditional VM-exit.
14796	*/
14797	HMVMX_EXIT_NSRC_DECL hmR0VmxExitInvd(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14798	{
14799	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14800	return hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
14801	}
14802
14803
14804	/**
14805	* VM-exit handler for CPUID (VMX_EXIT_CPUID). Unconditional VM-exit.
14806	*/
14807	HMVMX_EXIT_DECL hmR0VmxExitCpuid(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14808	{
14809	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14810
14811	/*
14812	* Get the state we need and update the exit history entry.
14813	*/
14814	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14815	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
14816
14817	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK);
14818	AssertRCReturn(rc, rc);
14819
14820	VBOXSTRICTRC rcStrict;
14821	PCEMEXITREC pExitRec = EMHistoryUpdateFlagsAndTypeAndPC(pVCpu,
14822	EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_CPUID),
14823	pVCpu->cpum.GstCtx.rip + pVCpu->cpum.GstCtx.cs.u64Base);
14824	if (!pExitRec)
14825	{
14826	/*
14827	* Regular CPUID instruction execution.
14828	*/
14829	rcStrict = IEMExecDecodedCpuid(pVCpu, pVmxTransient->cbExitInstr);
14830	if (rcStrict == VINF_SUCCESS)
14831	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
14832	else if (rcStrict == VINF_IEM_RAISED_XCPT)
14833	{
14834	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
14835	rcStrict = VINF_SUCCESS;
14836	}
14837	}
14838	else
14839	{
14840	/*
14841	* Frequent exit or something needing probing. Get state and call EMHistoryExec.
14842	*/
14843	int rc2 = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
14844	AssertRCReturn(rc2, rc2);
14845
14846	Log4(("CpuIdExit/%u: %04x:%08RX64: %#x/%#x -> EMHistoryExec\n",
14847	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.eax, pVCpu->cpum.GstCtx.ecx));
14848
14849	rcStrict = EMHistoryExec(pVCpu, pExitRec, 0);
14850	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
14851
14852	Log4(("CpuIdExit/%u: %04x:%08RX64: EMHistoryExec -> %Rrc + %04x:%08RX64\n",
14853	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
14854	VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
14855	}
14856	return rcStrict;
14857	}
14858
14859
14860	/**
14861	* VM-exit handler for GETSEC (VMX_EXIT_GETSEC). Unconditional VM-exit.
14862	*/
14863	HMVMX_EXIT_DECL hmR0VmxExitGetsec(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14864	{
14865	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14866
14867	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14868	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_CR4);
14869	AssertRCReturn(rc, rc);
14870
14871	if (pVCpu->cpum.GstCtx.cr4 & X86_CR4_SMXE)
14872	return VINF_EM_RAW_EMULATE_INSTR;
14873
14874	AssertMsgFailed(("hmR0VmxExitGetsec: Unexpected VM-exit when CR4.SMXE is 0.\n"));
14875	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, pVmxTransient->uExitReason);
14876	}
14877
14878
14879	/**
14880	* VM-exit handler for RDTSC (VMX_EXIT_RDTSC). Conditional VM-exit.
14881	*/
14882	HMVMX_EXIT_DECL hmR0VmxExitRdtsc(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14883	{
14884	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14885
14886	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14887	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
14888	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
14889	AssertRCReturn(rc, rc);
14890
14891	VBOXSTRICTRC rcStrict = IEMExecDecodedRdtsc(pVCpu, pVmxTransient->cbExitInstr);
14892	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
14893	{
14894	/* If we get a spurious VM-exit when TSC offsetting is enabled,
14895	we must reset offsetting on VM-entry. See @bugref{6634}. */
14896	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TSC_OFFSETTING)
14897	pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer = false;
14898	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
14899	}
14900	else if (rcStrict == VINF_IEM_RAISED_XCPT)
14901	{
14902	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
14903	rcStrict = VINF_SUCCESS;
14904	}
14905	return rcStrict;
14906	}
14907
14908
14909	/**
14910	* VM-exit handler for RDTSCP (VMX_EXIT_RDTSCP). Conditional VM-exit.
14911	*/
14912	HMVMX_EXIT_DECL hmR0VmxExitRdtscp(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14913	{
14914	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14915
14916	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14917	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
14918	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_TSC_AUX);
14919	AssertRCReturn(rc, rc);
14920
14921	VBOXSTRICTRC rcStrict = IEMExecDecodedRdtscp(pVCpu, pVmxTransient->cbExitInstr);
14922	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
14923	{
14924	/* If we get a spurious VM-exit when TSC offsetting is enabled,
14925	we must reset offsetting on VM-reentry. See @bugref{6634}. */
14926	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TSC_OFFSETTING)
14927	pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer = false;
14928	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
14929	}
14930	else if (rcStrict == VINF_IEM_RAISED_XCPT)
14931	{
14932	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
14933	rcStrict = VINF_SUCCESS;
14934	}
14935	return rcStrict;
14936	}
14937
14938
14939	/**
14940	* VM-exit handler for RDPMC (VMX_EXIT_RDPMC). Conditional VM-exit.
14941	*/
14942	HMVMX_EXIT_DECL hmR0VmxExitRdpmc(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14943	{
14944	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14945
14946	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14947	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_CR4 \| CPUMCTX_EXTRN_CR0
14948	\| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_SS);
14949	AssertRCReturn(rc, rc);
14950
14951	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
14952	rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
14953	if (RT_LIKELY(rc == VINF_SUCCESS))
14954	{
14955	rc = hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
14956	Assert(pVmxTransient->cbExitInstr == 2);
14957	}
14958	else
14959	{
14960	AssertMsgFailed(("hmR0VmxExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
14961	rc = VERR_EM_INTERPRETER;
14962	}
14963	return rc;
14964	}
14965
14966
14967	/**
14968	* VM-exit handler for VMCALL (VMX_EXIT_VMCALL). Unconditional VM-exit.
14969	*/
14970	HMVMX_EXIT_DECL hmR0VmxExitVmcall(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
14971	{
14972	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
14973
14974	VBOXSTRICTRC rcStrict = VERR_VMX_IPE_3;
14975	if (EMAreHypercallInstructionsEnabled(pVCpu))
14976	{
14977	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
14978	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS \| CPUMCTX_EXTRN_CR0
14979	\| CPUMCTX_EXTRN_SS \| CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_EFER);
14980	AssertRCReturn(rc, rc);
14981
14982	/* Perform the hypercall. */
14983	rcStrict = GIMHypercall(pVCpu, &pVCpu->cpum.GstCtx);
14984	if (rcStrict == VINF_SUCCESS)
14985	{
14986	rc = hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
14987	AssertRCReturn(rc, rc);
14988	}
14989	else
14990	Assert( rcStrict == VINF_GIM_R3_HYPERCALL
14991	\|\| rcStrict == VINF_GIM_HYPERCALL_CONTINUING
14992	\|\| RT_FAILURE(rcStrict));
14993
14994	/* If the hypercall changes anything other than guest's general-purpose registers,
14995	we would need to reload the guest changed bits here before VM-entry. */
14996	}
14997	else
14998	Log4Func(("Hypercalls not enabled\n"));
14999
15000	/* If hypercalls are disabled or the hypercall failed for some reason, raise #UD and continue. */
15001	if (RT_FAILURE(rcStrict))
15002	{
15003	hmR0VmxSetPendingXcptUD(pVCpu);
15004	rcStrict = VINF_SUCCESS;
15005	}
15006
15007	return rcStrict;
15008	}
15009
15010
15011	/**
15012	* VM-exit handler for INVLPG (VMX_EXIT_INVLPG). Conditional VM-exit.
15013	*/
15014	HMVMX_EXIT_DECL hmR0VmxExitInvlpg(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15015	{
15016	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15017	Assert(!pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging \|\| pVCpu->hmr0.s.fUsingDebugLoop);
15018
15019	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15020	hmR0VmxReadExitQualVmcs(pVmxTransient);
15021	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15022	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
15023	AssertRCReturn(rc, rc);
15024
15025	VBOXSTRICTRC rcStrict = IEMExecDecodedInvlpg(pVCpu, pVmxTransient->cbExitInstr, pVmxTransient->uExitQual);
15026
15027	if (rcStrict == VINF_SUCCESS \|\| rcStrict == VINF_PGM_SYNC_CR3)
15028	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
15029	else if (rcStrict == VINF_IEM_RAISED_XCPT)
15030	{
15031	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
15032	rcStrict = VINF_SUCCESS;
15033	}
15034	else
15035	AssertMsgFailed(("Unexpected IEMExecDecodedInvlpg(%#RX64) status: %Rrc\n", pVmxTransient->uExitQual,
15036	VBOXSTRICTRC_VAL(rcStrict)));
15037	return rcStrict;
15038	}
15039
15040
15041	/**
15042	* VM-exit handler for MONITOR (VMX_EXIT_MONITOR). Conditional VM-exit.
15043	*/
15044	HMVMX_EXIT_DECL hmR0VmxExitMonitor(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15045	{
15046	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15047
15048	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15049	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15050	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK \| CPUMCTX_EXTRN_DS);
15051	AssertRCReturn(rc, rc);
15052
15053	VBOXSTRICTRC rcStrict = IEMExecDecodedMonitor(pVCpu, pVmxTransient->cbExitInstr);
15054	if (rcStrict == VINF_SUCCESS)
15055	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
15056	else if (rcStrict == VINF_IEM_RAISED_XCPT)
15057	{
15058	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
15059	rcStrict = VINF_SUCCESS;
15060	}
15061
15062	return rcStrict;
15063	}
15064
15065
15066	/**
15067	* VM-exit handler for MWAIT (VMX_EXIT_MWAIT). Conditional VM-exit.
15068	*/
15069	HMVMX_EXIT_DECL hmR0VmxExitMwait(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15070	{
15071	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15072
15073	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15074	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15075	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK);
15076	AssertRCReturn(rc, rc);
15077
15078	VBOXSTRICTRC rcStrict = IEMExecDecodedMwait(pVCpu, pVmxTransient->cbExitInstr);
15079	if (RT_SUCCESS(rcStrict))
15080	{
15081	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
15082	if (EMMonitorWaitShouldContinue(pVCpu, &pVCpu->cpum.GstCtx))
15083	rcStrict = VINF_SUCCESS;
15084	}
15085
15086	return rcStrict;
15087	}
15088
15089
15090	/**
15091	* VM-exit handler for triple faults (VMX_EXIT_TRIPLE_FAULT). Unconditional
15092	* VM-exit.
15093	*/
15094	HMVMX_EXIT_DECL hmR0VmxExitTripleFault(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15095	{
15096	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15097	return VINF_EM_RESET;
15098	}
15099
15100
15101	/**
15102	* VM-exit handler for HLT (VMX_EXIT_HLT). Conditional VM-exit.
15103	*/
15104	HMVMX_EXIT_DECL hmR0VmxExitHlt(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15105	{
15106	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15107
15108	int rc = hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
15109	AssertRCReturn(rc, rc);
15110
15111	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RFLAGS); /* Advancing the RIP above should've imported eflags. */
15112	if (EMShouldContinueAfterHalt(pVCpu, &pVCpu->cpum.GstCtx)) /* Requires eflags. */
15113	rc = VINF_SUCCESS;
15114	else
15115	rc = VINF_EM_HALT;
15116
15117	if (rc != VINF_SUCCESS)
15118	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHltToR3);
15119	return rc;
15120	}
15121
15122
15123	/**
15124	* VM-exit handler for instructions that result in a \#UD exception delivered to
15125	* the guest.
15126	*/
15127	HMVMX_EXIT_NSRC_DECL hmR0VmxExitSetPendingXcptUD(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15128	{
15129	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15130	hmR0VmxSetPendingXcptUD(pVCpu);
15131	return VINF_SUCCESS;
15132	}
15133
15134
15135	/**
15136	* VM-exit handler for expiry of the VMX-preemption timer.
15137	*/
15138	HMVMX_EXIT_DECL hmR0VmxExitPreemptTimer(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15139	{
15140	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15141
15142	/* If the VMX-preemption timer has expired, reinitialize the preemption timer on next VM-entry. */
15143	pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer = false;
15144	Log12(("hmR0VmxExitPreemptTimer:\n"));
15145
15146	/* If there are any timer events pending, fall back to ring-3, otherwise resume guest execution. */
15147	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
15148	bool fTimersPending = TMTimerPollBool(pVM, pVCpu);
15149	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitPreemptTimer);
15150	return fTimersPending ? VINF_EM_RAW_TIMER_PENDING : VINF_SUCCESS;
15151	}
15152
15153
15154	/**
15155	* VM-exit handler for XSETBV (VMX_EXIT_XSETBV). Unconditional VM-exit.
15156	*/
15157	HMVMX_EXIT_DECL hmR0VmxExitXsetbv(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15158	{
15159	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15160
15161	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15162	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15163	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_CR4);
15164	AssertRCReturn(rc, rc);
15165
15166	VBOXSTRICTRC rcStrict = IEMExecDecodedXsetbv(pVCpu, pVmxTransient->cbExitInstr);
15167	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, rcStrict != VINF_IEM_RAISED_XCPT ? HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS
15168	: HM_CHANGED_RAISED_XCPT_MASK);
15169
15170	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
15171	bool const fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
15172	if (fLoadSaveGuestXcr0 != pVCpu->hmr0.s.fLoadSaveGuestXcr0)
15173	{
15174	pVCpu->hmr0.s.fLoadSaveGuestXcr0 = fLoadSaveGuestXcr0;
15175	hmR0VmxUpdateStartVmFunction(pVCpu);
15176	}
15177
15178	return rcStrict;
15179	}
15180
15181
15182	/**
15183	* VM-exit handler for INVPCID (VMX_EXIT_INVPCID). Conditional VM-exit.
15184	*/
15185	HMVMX_EXIT_DECL hmR0VmxExitInvpcid(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15186	{
15187	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15188
15189	/** @todo Enable the new code after finding a reliably guest test-case. */
15190	#if 1
15191	return VERR_EM_INTERPRETER;
15192	#else
15193	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15194	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
15195	hmR0VmxReadExitQualVmcs(pVmxTransient);
15196	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
15197	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
15198	AssertRCReturn(rc, rc);
15199
15200	/* Paranoia. Ensure this has a memory operand. */
15201	Assert(!pVmxTransient->ExitInstrInfo.Inv.u1Cleared0);
15202
15203	uint8_t const iGReg = pVmxTransient->ExitInstrInfo.VmreadVmwrite.iReg2;
15204	Assert(iGReg < RT_ELEMENTS(pVCpu->cpum.GstCtx.aGRegs));
15205	uint64_t const uType = CPUMIsGuestIn64BitCode(pVCpu) ? pVCpu->cpum.GstCtx.aGRegs[iGReg].u64
15206	: pVCpu->cpum.GstCtx.aGRegs[iGReg].u32;
15207
15208	RTGCPTR GCPtrDesc;
15209	HMVMX_DECODE_MEM_OPERAND(pVCpu, pVmxTransient->ExitInstrInfo.u, pVmxTransient->uExitQual, VMXMEMACCESS_READ, &GCPtrDesc);
15210
15211	VBOXSTRICTRC rcStrict = IEMExecDecodedInvpcid(pVCpu, pVmxTransient->cbExitInstr, pVmxTransient->ExitInstrInfo.Inv.iSegReg,
15212	GCPtrDesc, uType);
15213	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
15214	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
15215	else if (rcStrict == VINF_IEM_RAISED_XCPT)
15216	{
15217	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
15218	rcStrict = VINF_SUCCESS;
15219	}
15220	return rcStrict;
15221	#endif
15222	}
15223
15224
15225	/**
15226	* VM-exit handler for invalid-guest-state (VMX_EXIT_ERR_INVALID_GUEST_STATE). Error
15227	* VM-exit.
15228	*/
15229	HMVMX_EXIT_NSRC_DECL hmR0VmxExitErrInvalidGuestState(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15230	{
15231	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15232	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
15233	AssertRCReturn(rc, rc);
15234
15235	rc = hmR0VmxCheckCachedVmcsCtls(pVCpu, pVmcsInfo, pVmxTransient->fIsNestedGuest);
15236	if (RT_FAILURE(rc))
15237	return rc;
15238
15239	uint32_t const uInvalidReason = hmR0VmxCheckGuestState(pVCpu, pVmcsInfo);
15240	NOREF(uInvalidReason);
15241
15242	#ifdef VBOX_STRICT
15243	uint32_t fIntrState;
15244	uint64_t u64Val;
15245	hmR0VmxReadEntryIntInfoVmcs(pVmxTransient);
15246	hmR0VmxReadEntryXcptErrorCodeVmcs(pVmxTransient);
15247	hmR0VmxReadEntryInstrLenVmcs(pVmxTransient);
15248
15249	Log4(("uInvalidReason %u\n", uInvalidReason));
15250	Log4(("VMX_VMCS32_CTRL_ENTRY_INTERRUPTION_INFO %#RX32\n", pVmxTransient->uEntryIntInfo));
15251	Log4(("VMX_VMCS32_CTRL_ENTRY_EXCEPTION_ERRCODE %#RX32\n", pVmxTransient->uEntryXcptErrorCode));
15252	Log4(("VMX_VMCS32_CTRL_ENTRY_INSTR_LENGTH %#RX32\n", pVmxTransient->cbEntryInstr));
15253
15254	rc = VMXReadVmcs32(VMX_VMCS32_GUEST_INT_STATE, &fIntrState); AssertRC(rc);
15255	Log4(("VMX_VMCS32_GUEST_INT_STATE %#RX32\n", fIntrState));
15256	rc = VMXReadVmcsNw(VMX_VMCS_GUEST_CR0, &u64Val); AssertRC(rc);
15257	Log4(("VMX_VMCS_GUEST_CR0 %#RX64\n", u64Val));
15258	rc = VMXReadVmcsNw(VMX_VMCS_CTRL_CR0_MASK, &u64Val); AssertRC(rc);
15259	Log4(("VMX_VMCS_CTRL_CR0_MASK %#RX64\n", u64Val));
15260	rc = VMXReadVmcsNw(VMX_VMCS_CTRL_CR0_READ_SHADOW, &u64Val); AssertRC(rc);
15261	Log4(("VMX_VMCS_CTRL_CR4_READ_SHADOW %#RX64\n", u64Val));
15262	rc = VMXReadVmcsNw(VMX_VMCS_CTRL_CR4_MASK, &u64Val); AssertRC(rc);
15263	Log4(("VMX_VMCS_CTRL_CR4_MASK %#RX64\n", u64Val));
15264	rc = VMXReadVmcsNw(VMX_VMCS_CTRL_CR4_READ_SHADOW, &u64Val); AssertRC(rc);
15265	Log4(("VMX_VMCS_CTRL_CR4_READ_SHADOW %#RX64\n", u64Val));
15266	if (pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging)
15267	{
15268	rc = VMXReadVmcs64(VMX_VMCS64_CTRL_EPTP_FULL, &u64Val); AssertRC(rc);
15269	Log4(("VMX_VMCS64_CTRL_EPTP_FULL %#RX64\n", u64Val));
15270	}
15271	hmR0DumpRegs(pVCpu, HM_DUMP_REG_FLAGS_ALL);
15272	#endif
15273
15274	return VERR_VMX_INVALID_GUEST_STATE;
15275	}
15276
15277	/**
15278	* VM-exit handler for all undefined/unexpected reasons. Should never happen.
15279	*/
15280	HMVMX_EXIT_NSRC_DECL hmR0VmxExitErrUnexpected(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15281	{
15282	/*
15283	* Cumulative notes of all recognized but unexpected VM-exits.
15284	*
15285	* 1. This does -not- cover scenarios like a page-fault VM-exit occurring when
15286	* nested-paging is used.
15287	*
15288	* 2. Any instruction that causes a VM-exit unconditionally (for e.g. VMXON) must be
15289	* emulated or a #UD must be raised in the guest. Therefore, we should -not- be using
15290	* this function (and thereby stop VM execution) for handling such instructions.
15291	*
15292	*
15293	* VMX_EXIT_INIT_SIGNAL:
15294	* INIT signals are blocked in VMX root operation by VMXON and by SMI in SMM.
15295	* It is -NOT- blocked in VMX non-root operation so we can, in theory, still get these
15296	* VM-exits. However, we should not receive INIT signals VM-exit while executing a VM.
15297	*
15298	* See Intel spec. 33.14.1 Default Treatment of SMI Delivery"
15299	* See Intel spec. 29.3 "VMX Instructions" for "VMXON".
15300	* See Intel spec. "23.8 Restrictions on VMX operation".
15301	*
15302	* VMX_EXIT_SIPI:
15303	* SIPI exits can only occur in VMX non-root operation when the "wait-for-SIPI" guest
15304	* activity state is used. We don't make use of it as our guests don't have direct
15305	* access to the host local APIC.
15306	*
15307	* See Intel spec. 25.3 "Other Causes of VM-exits".
15308	*
15309	* VMX_EXIT_IO_SMI:
15310	* VMX_EXIT_SMI:
15311	* This can only happen if we support dual-monitor treatment of SMI, which can be
15312	* activated by executing VMCALL in VMX root operation. Only an STM (SMM transfer
15313	* monitor) would get this VM-exit when we (the executive monitor) execute a VMCALL in
15314	* VMX root mode or receive an SMI. If we get here, something funny is going on.
15315	*
15316	* See Intel spec. 33.15.6 "Activating the Dual-Monitor Treatment"
15317	* See Intel spec. 25.3 "Other Causes of VM-Exits"
15318	*
15319	* VMX_EXIT_ERR_MSR_LOAD:
15320	* Failures while loading MSRs are part of the VM-entry MSR-load area are unexpected
15321	* and typically indicates a bug in the hypervisor code. We thus cannot not resume
15322	* execution.
15323	*
15324	* See Intel spec. 26.7 "VM-Entry Failures During Or After Loading Guest State".
15325	*
15326	* VMX_EXIT_ERR_MACHINE_CHECK:
15327	* Machine check exceptions indicates a fatal/unrecoverable hardware condition
15328	* including but not limited to system bus, ECC, parity, cache and TLB errors. A
15329	* #MC exception abort class exception is raised. We thus cannot assume a
15330	* reasonable chance of continuing any sort of execution and we bail.
15331	*
15332	* See Intel spec. 15.1 "Machine-check Architecture".
15333	* See Intel spec. 27.1 "Architectural State Before A VM Exit".
15334	*
15335	* VMX_EXIT_PML_FULL:
15336	* VMX_EXIT_VIRTUALIZED_EOI:
15337	* VMX_EXIT_APIC_WRITE:
15338	* We do not currently support any of these features and thus they are all unexpected
15339	* VM-exits.
15340	*
15341	* VMX_EXIT_GDTR_IDTR_ACCESS:
15342	* VMX_EXIT_LDTR_TR_ACCESS:
15343	* VMX_EXIT_RDRAND:
15344	* VMX_EXIT_RSM:
15345	* VMX_EXIT_VMFUNC:
15346	* VMX_EXIT_ENCLS:
15347	* VMX_EXIT_RDSEED:
15348	* VMX_EXIT_XSAVES:
15349	* VMX_EXIT_XRSTORS:
15350	* VMX_EXIT_UMWAIT:
15351	* VMX_EXIT_TPAUSE:
15352	* VMX_EXIT_LOADIWKEY:
15353	* These VM-exits are -not- caused unconditionally by execution of the corresponding
15354	* instruction. Any VM-exit for these instructions indicate a hardware problem,
15355	* unsupported CPU modes (like SMM) or potentially corrupt VMCS controls.
15356	*
15357	* See Intel spec. 25.1.3 "Instructions That Cause VM Exits Conditionally".
15358	*/
15359	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15360	AssertMsgFailed(("Unexpected VM-exit %u\n", pVmxTransient->uExitReason));
15361	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, pVmxTransient->uExitReason);
15362	}
15363
15364
15365	/**
15366	* VM-exit handler for RDMSR (VMX_EXIT_RDMSR).
15367	*/
15368	HMVMX_EXIT_DECL hmR0VmxExitRdmsr(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15369	{
15370	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15371
15372	/** @todo Optimize this: We currently drag in the whole MSR state
15373	* (CPUMCTX_EXTRN_ALL_MSRS) here. We should optimize this to only get
15374	* MSRs required. That would require changes to IEM and possibly CPUM too.
15375	* (Should probably do it lazy fashion from CPUMAllMsrs.cpp). */
15376	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15377	uint32_t const idMsr = pVCpu->cpum.GstCtx.ecx;
15378	uint64_t fImport = IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK \| CPUMCTX_EXTRN_ALL_MSRS;
15379	switch (idMsr)
15380	{
15381	case MSR_K8_FS_BASE: fImport \|= CPUMCTX_EXTRN_FS; break;
15382	case MSR_K8_GS_BASE: fImport \|= CPUMCTX_EXTRN_GS; break;
15383	}
15384
15385	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15386	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, fImport);
15387	AssertRCReturn(rc, rc);
15388
15389	Log4Func(("ecx=%#RX32\n", idMsr));
15390
15391	#ifdef VBOX_STRICT
15392	Assert(!pVmxTransient->fIsNestedGuest);
15393	if (pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS)
15394	{
15395	if ( hmR0VmxIsAutoLoadGuestMsr(pVmcsInfo, idMsr)
15396	&& idMsr != MSR_K6_EFER)
15397	{
15398	AssertMsgFailed(("Unexpected RDMSR for an MSR in the auto-load/store area in the VMCS. ecx=%#RX32\n", idMsr));
15399	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, idMsr);
15400	}
15401	if (hmR0VmxIsLazyGuestMsr(pVCpu, idMsr))
15402	{
15403	Assert(pVmcsInfo->pvMsrBitmap);
15404	uint32_t fMsrpm = CPUMGetVmxMsrPermission(pVmcsInfo->pvMsrBitmap, idMsr);
15405	if (fMsrpm & VMXMSRPM_ALLOW_RD)
15406	{
15407	AssertMsgFailed(("Unexpected RDMSR for a passthru lazy-restore MSR. ecx=%#RX32\n", idMsr));
15408	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, idMsr);
15409	}
15410	}
15411	}
15412	#endif
15413
15414	VBOXSTRICTRC rcStrict = IEMExecDecodedRdmsr(pVCpu, pVmxTransient->cbExitInstr);
15415	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
15416	if (rcStrict == VINF_SUCCESS)
15417	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
15418	else if (rcStrict == VINF_IEM_RAISED_XCPT)
15419	{
15420	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
15421	rcStrict = VINF_SUCCESS;
15422	}
15423	else
15424	AssertMsg(rcStrict == VINF_CPUM_R3_MSR_READ \|\| rcStrict == VINF_EM_TRIPLE_FAULT,
15425	("Unexpected IEMExecDecodedRdmsr rc (%Rrc)\n", VBOXSTRICTRC_VAL(rcStrict)));
15426
15427	return rcStrict;
15428	}
15429
15430
15431	/**
15432	* VM-exit handler for WRMSR (VMX_EXIT_WRMSR).
15433	*/
15434	HMVMX_EXIT_DECL hmR0VmxExitWrmsr(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15435	{
15436	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15437
15438	/** @todo Optimize this: We currently drag in the whole MSR state
15439	* (CPUMCTX_EXTRN_ALL_MSRS) here. We should optimize this to only get
15440	* MSRs required. That would require changes to IEM and possibly CPUM too.
15441	* (Should probably do it lazy fashion from CPUMAllMsrs.cpp). */
15442	uint32_t const idMsr = pVCpu->cpum.GstCtx.ecx;
15443	uint64_t fImport = IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK \| CPUMCTX_EXTRN_ALL_MSRS;
15444
15445	/*
15446	* The FS and GS base MSRs are not part of the above all-MSRs mask.
15447	* Although we don't need to fetch the base as it will be overwritten shortly, while
15448	* loading guest-state we would also load the entire segment register including limit
15449	* and attributes and thus we need to load them here.
15450	*/
15451	switch (idMsr)
15452	{
15453	case MSR_K8_FS_BASE: fImport \|= CPUMCTX_EXTRN_FS; break;
15454	case MSR_K8_GS_BASE: fImport \|= CPUMCTX_EXTRN_GS; break;
15455	}
15456
15457	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15458	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15459	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, fImport);
15460	AssertRCReturn(rc, rc);
15461
15462	Log4Func(("ecx=%#RX32 edx:eax=%#RX32:%#RX32\n", idMsr, pVCpu->cpum.GstCtx.edx, pVCpu->cpum.GstCtx.eax));
15463
15464	VBOXSTRICTRC rcStrict = IEMExecDecodedWrmsr(pVCpu, pVmxTransient->cbExitInstr);
15465	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
15466
15467	if (rcStrict == VINF_SUCCESS)
15468	{
15469	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
15470
15471	/* If this is an X2APIC WRMSR access, update the APIC state as well. */
15472	if ( idMsr == MSR_IA32_APICBASE
15473	\|\| ( idMsr >= MSR_IA32_X2APIC_START
15474	&& idMsr <= MSR_IA32_X2APIC_END))
15475	{
15476	/*
15477	* We've already saved the APIC related guest-state (TPR) in post-run phase.
15478	* When full APIC register virtualization is implemented we'll have to make
15479	* sure APIC state is saved from the VMCS before IEM changes it.
15480	*/
15481	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
15482	}
15483	else if (idMsr == MSR_IA32_TSC) /* Windows 7 does this during bootup. See @bugref{6398}. */
15484	pVmxTransient->fUpdatedTscOffsettingAndPreemptTimer = false;
15485	else if (idMsr == MSR_K6_EFER)
15486	{
15487	/*
15488	* If the guest touches the EFER MSR we need to update the VM-Entry and VM-Exit controls
15489	* as well, even if it is -not- touching bits that cause paging mode changes (LMA/LME).
15490	* We care about the other bits as well, SCE and NXE. See @bugref{7368}.
15491	*/
15492	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_EFER_MSR \| HM_CHANGED_VMX_ENTRY_EXIT_CTLS);
15493	}
15494
15495	/* Update MSRs that are part of the VMCS and auto-load/store area when MSR-bitmaps are not used. */
15496	if (!(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_MSR_BITMAPS))
15497	{
15498	switch (idMsr)
15499	{
15500	case MSR_IA32_SYSENTER_CS: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_SYSENTER_CS_MSR); break;
15501	case MSR_IA32_SYSENTER_EIP: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_SYSENTER_EIP_MSR); break;
15502	case MSR_IA32_SYSENTER_ESP: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_SYSENTER_ESP_MSR); break;
15503	case MSR_K8_FS_BASE: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_FS); break;
15504	case MSR_K8_GS_BASE: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_GS); break;
15505	case MSR_K6_EFER: /* Nothing to do, already handled above. */ break;
15506	default:
15507	{
15508	if (hmR0VmxIsLazyGuestMsr(pVCpu, idMsr))
15509	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_VMX_GUEST_LAZY_MSRS);
15510	else if (hmR0VmxIsAutoLoadGuestMsr(pVmcsInfo, idMsr))
15511	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_VMX_GUEST_AUTO_MSRS);
15512	break;
15513	}
15514	}
15515	}
15516	#ifdef VBOX_STRICT
15517	else
15518	{
15519	/* Paranoia. Validate that MSRs in the MSR-bitmaps with write-passthru are not intercepted. */
15520	switch (idMsr)
15521	{
15522	case MSR_IA32_SYSENTER_CS:
15523	case MSR_IA32_SYSENTER_EIP:
15524	case MSR_IA32_SYSENTER_ESP:
15525	case MSR_K8_FS_BASE:
15526	case MSR_K8_GS_BASE:
15527	{
15528	AssertMsgFailed(("Unexpected WRMSR for an MSR in the VMCS. ecx=%#RX32\n", idMsr));
15529	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, idMsr);
15530	}
15531
15532	/* Writes to MSRs in auto-load/store area/swapped MSRs, shouldn't cause VM-exits with MSR-bitmaps. */
15533	default:
15534	{
15535	if (hmR0VmxIsAutoLoadGuestMsr(pVmcsInfo, idMsr))
15536	{
15537	/* EFER MSR writes are always intercepted. */
15538	if (idMsr != MSR_K6_EFER)
15539	{
15540	AssertMsgFailed(("Unexpected WRMSR for an MSR in the auto-load/store area in the VMCS. ecx=%#RX32\n",
15541	idMsr));
15542	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, idMsr);
15543	}
15544	}
15545
15546	if (hmR0VmxIsLazyGuestMsr(pVCpu, idMsr))
15547	{
15548	Assert(pVmcsInfo->pvMsrBitmap);
15549	uint32_t fMsrpm = CPUMGetVmxMsrPermission(pVmcsInfo->pvMsrBitmap, idMsr);
15550	if (fMsrpm & VMXMSRPM_ALLOW_WR)
15551	{
15552	AssertMsgFailed(("Unexpected WRMSR for passthru, lazy-restore MSR. ecx=%#RX32\n", idMsr));
15553	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, idMsr);
15554	}
15555	}
15556	break;
15557	}
15558	}
15559	}
15560	#endif /* VBOX_STRICT */
15561	}
15562	else if (rcStrict == VINF_IEM_RAISED_XCPT)
15563	{
15564	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
15565	rcStrict = VINF_SUCCESS;
15566	}
15567	else
15568	AssertMsg(rcStrict == VINF_CPUM_R3_MSR_WRITE \|\| rcStrict == VINF_EM_TRIPLE_FAULT,
15569	("Unexpected IEMExecDecodedWrmsr rc (%Rrc)\n", VBOXSTRICTRC_VAL(rcStrict)));
15570
15571	return rcStrict;
15572	}
15573
15574
15575	/**
15576	* VM-exit handler for PAUSE (VMX_EXIT_PAUSE). Conditional VM-exit.
15577	*/
15578	HMVMX_EXIT_DECL hmR0VmxExitPause(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15579	{
15580	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15581
15582	/** @todo The guest has likely hit a contended spinlock. We might want to
15583	* poke a schedule different guest VCPU. */
15584	int rc = hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
15585	if (RT_SUCCESS(rc))
15586	return VINF_EM_RAW_INTERRUPT;
15587
15588	AssertMsgFailed(("hmR0VmxExitPause: Failed to increment RIP. rc=%Rrc\n", rc));
15589	return rc;
15590	}
15591
15592
15593	/**
15594	* VM-exit handler for when the TPR value is lowered below the specified
15595	* threshold (VMX_EXIT_TPR_BELOW_THRESHOLD). Conditional VM-exit.
15596	*/
15597	HMVMX_EXIT_NSRC_DECL hmR0VmxExitTprBelowThreshold(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15598	{
15599	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15600	Assert(pVmxTransient->pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW);
15601
15602	/*
15603	* The TPR shadow would've been synced with the APIC TPR in the post-run phase.
15604	* We'll re-evaluate pending interrupts and inject them before the next VM
15605	* entry so we can just continue execution here.
15606	*/
15607	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTprBelowThreshold);
15608	return VINF_SUCCESS;
15609	}
15610
15611
15612	/**
15613	* VM-exit handler for control-register accesses (VMX_EXIT_MOV_CRX). Conditional
15614	* VM-exit.
15615	*
15616	* @retval VINF_SUCCESS when guest execution can continue.
15617	* @retval VINF_PGM_SYNC_CR3 CR3 sync is required, back to ring-3.
15618	* @retval VERR_EM_RESCHEDULE_REM when we need to return to ring-3 due to
15619	* incompatible guest state for VMX execution (real-on-v86 case).
15620	*/
15621	HMVMX_EXIT_DECL hmR0VmxExitMovCRx(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15622	{
15623	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15624	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExitMovCRx, y2);
15625
15626	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15627	hmR0VmxReadExitQualVmcs(pVmxTransient);
15628	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15629
15630	VBOXSTRICTRC rcStrict;
15631	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
15632	uint64_t const uExitQual = pVmxTransient->uExitQual;
15633	uint32_t const uAccessType = VMX_EXIT_QUAL_CRX_ACCESS(uExitQual);
15634	switch (uAccessType)
15635	{
15636	/*
15637	* MOV to CRx.
15638	*/
15639	case VMX_EXIT_QUAL_CRX_ACCESS_WRITE:
15640	{
15641	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
15642	AssertRCReturn(rc, rc);
15643
15644	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0);
15645	uint32_t const uOldCr0 = pVCpu->cpum.GstCtx.cr0;
15646	uint8_t const iGReg = VMX_EXIT_QUAL_CRX_GENREG(uExitQual);
15647	uint8_t const iCrReg = VMX_EXIT_QUAL_CRX_REGISTER(uExitQual);
15648
15649	/*
15650	* MOV to CR3 only cause a VM-exit when one or more of the following are true:
15651	* - When nested paging isn't used.
15652	* - If the guest doesn't have paging enabled (intercept CR3 to update shadow page tables).
15653	* - We are executing in the VM debug loop.
15654	*/
15655	Assert( iCrReg != 3
15656	\|\| !pVM->hmr0.s.fNestedPaging
15657	\|\| !CPUMIsGuestPagingEnabledEx(&pVCpu->cpum.GstCtx)
15658	\|\| pVCpu->hmr0.s.fUsingDebugLoop);
15659
15660	/* MOV to CR8 writes only cause VM-exits when TPR shadow is not used. */
15661	Assert( iCrReg != 8
15662	\|\| !(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW));
15663
15664	rcStrict = hmR0VmxExitMovToCrX(pVCpu, pVmcsInfo, pVmxTransient->cbExitInstr, iGReg, iCrReg);
15665	AssertMsg( rcStrict == VINF_SUCCESS
15666	\|\| rcStrict == VINF_PGM_SYNC_CR3, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
15667
15668	/*
15669	* This is a kludge for handling switches back to real mode when we try to use
15670	* V86 mode to run real mode code directly. Problem is that V86 mode cannot
15671	* deal with special selector values, so we have to return to ring-3 and run
15672	* there till the selector values are V86 mode compatible.
15673	*
15674	* Note! Using VINF_EM_RESCHEDULE_REM here rather than VINF_EM_RESCHEDULE since the
15675	* latter is an alias for VINF_IEM_RAISED_XCPT which is asserted at the end of
15676	* this function.
15677	*/
15678	if ( iCrReg == 0
15679	&& rcStrict == VINF_SUCCESS
15680	&& !pVM->hmr0.s.vmx.fUnrestrictedGuest
15681	&& CPUMIsGuestInRealModeEx(&pVCpu->cpum.GstCtx)
15682	&& (uOldCr0 & X86_CR0_PE)
15683	&& !(pVCpu->cpum.GstCtx.cr0 & X86_CR0_PE))
15684	{
15685	/** @todo Check selectors rather than returning all the time. */
15686	Assert(!pVmxTransient->fIsNestedGuest);
15687	Log4Func(("CR0 write, back to real mode -> VINF_EM_RESCHEDULE_REM\n"));
15688	rcStrict = VINF_EM_RESCHEDULE_REM;
15689	}
15690	break;
15691	}
15692
15693	/*
15694	* MOV from CRx.
15695	*/
15696	case VMX_EXIT_QUAL_CRX_ACCESS_READ:
15697	{
15698	uint8_t const iGReg = VMX_EXIT_QUAL_CRX_GENREG(uExitQual);
15699	uint8_t const iCrReg = VMX_EXIT_QUAL_CRX_REGISTER(uExitQual);
15700
15701	/*
15702	* MOV from CR3 only cause a VM-exit when one or more of the following are true:
15703	* - When nested paging isn't used.
15704	* - If the guest doesn't have paging enabled (pass guest's CR3 rather than our identity mapped CR3).
15705	* - We are executing in the VM debug loop.
15706	*/
15707	Assert( iCrReg != 3
15708	\|\| !pVM->hmr0.s.fNestedPaging
15709	\|\| !CPUMIsGuestPagingEnabledEx(&pVCpu->cpum.GstCtx)
15710	\|\| pVCpu->hmr0.s.fLeaveDone);
15711
15712	/* MOV from CR8 reads only cause a VM-exit when the TPR shadow feature isn't enabled. */
15713	Assert( iCrReg != 8
15714	\|\| !(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW));
15715
15716	rcStrict = hmR0VmxExitMovFromCrX(pVCpu, pVmcsInfo, pVmxTransient->cbExitInstr, iGReg, iCrReg);
15717	break;
15718	}
15719
15720	/*
15721	* CLTS (Clear Task-Switch Flag in CR0).
15722	*/
15723	case VMX_EXIT_QUAL_CRX_ACCESS_CLTS:
15724	{
15725	rcStrict = hmR0VmxExitClts(pVCpu, pVmcsInfo, pVmxTransient->cbExitInstr);
15726	break;
15727	}
15728
15729	/*
15730	* LMSW (Load Machine-Status Word into CR0).
15731	* LMSW cannot clear CR0.PE, so no fRealOnV86Active kludge needed here.
15732	*/
15733	case VMX_EXIT_QUAL_CRX_ACCESS_LMSW:
15734	{
15735	RTGCPTR GCPtrEffDst;
15736	uint8_t const cbInstr = pVmxTransient->cbExitInstr;
15737	uint16_t const uMsw = VMX_EXIT_QUAL_CRX_LMSW_DATA(uExitQual);
15738	bool const fMemOperand = VMX_EXIT_QUAL_CRX_LMSW_OP_MEM(uExitQual);
15739	if (fMemOperand)
15740	{
15741	hmR0VmxReadGuestLinearAddrVmcs(pVmxTransient);
15742	GCPtrEffDst = pVmxTransient->uGuestLinearAddr;
15743	}
15744	else
15745	GCPtrEffDst = NIL_RTGCPTR;
15746	rcStrict = hmR0VmxExitLmsw(pVCpu, pVmcsInfo, cbInstr, uMsw, GCPtrEffDst);
15747	break;
15748	}
15749
15750	default:
15751	{
15752	AssertMsgFailed(("Unrecognized Mov CRX access type %#x\n", uAccessType));
15753	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, uAccessType);
15754	}
15755	}
15756
15757	Assert((pVCpu->hm.s.fCtxChanged & (HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS))
15758	== (HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS));
15759	Assert(rcStrict != VINF_IEM_RAISED_XCPT);
15760
15761	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitMovCRx, y2);
15762	NOREF(pVM);
15763	return rcStrict;
15764	}
15765
15766
15767	/**
15768	* VM-exit handler for I/O instructions (VMX_EXIT_IO_INSTR). Conditional
15769	* VM-exit.
15770	*/
15771	HMVMX_EXIT_DECL hmR0VmxExitIoInstr(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
15772	{
15773	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
15774	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExitIO, y1);
15775
15776	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
15777	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
15778	hmR0VmxReadExitQualVmcs(pVmxTransient);
15779	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
15780	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_SREG_MASK
15781	\| CPUMCTX_EXTRN_EFER);
15782	/* EFER MSR also required for longmode checks in EMInterpretDisasCurrent(), but it's always up-to-date. */
15783	AssertRCReturn(rc, rc);
15784
15785	/* Refer Intel spec. 27-5. "Exit Qualifications for I/O Instructions" for the format. */
15786	uint32_t const uIOPort = VMX_EXIT_QUAL_IO_PORT(pVmxTransient->uExitQual);
15787	uint8_t const uIOSize = VMX_EXIT_QUAL_IO_SIZE(pVmxTransient->uExitQual);
15788	bool const fIOWrite = (VMX_EXIT_QUAL_IO_DIRECTION(pVmxTransient->uExitQual) == VMX_EXIT_QUAL_IO_DIRECTION_OUT);
15789	bool const fIOString = VMX_EXIT_QUAL_IO_IS_STRING(pVmxTransient->uExitQual);
15790	bool const fGstStepping = RT_BOOL(pCtx->eflags.Bits.u1TF);
15791	bool const fDbgStepping = pVCpu->hm.s.fSingleInstruction;
15792	AssertReturn(uIOSize <= 3 && uIOSize != 2, VERR_VMX_IPE_1);
15793
15794	/*
15795	* Update exit history to see if this exit can be optimized.
15796	*/
15797	VBOXSTRICTRC rcStrict;
15798	PCEMEXITREC pExitRec = NULL;
15799	if ( !fGstStepping
15800	&& !fDbgStepping)
15801	pExitRec = EMHistoryUpdateFlagsAndTypeAndPC(pVCpu,
15802	!fIOString
15803	? !fIOWrite
15804	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_READ)
15805	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_WRITE)
15806	: !fIOWrite
15807	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_STR_READ)
15808	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_STR_WRITE),
15809	pVCpu->cpum.GstCtx.rip + pVCpu->cpum.GstCtx.cs.u64Base);
15810	if (!pExitRec)
15811	{
15812	static uint32_t const s_aIOSizes[4] = { 1, 2, 0, 4 }; /* Size of the I/O accesses in bytes. */
15813	static uint32_t const s_aIOOpAnd[4] = { 0xff, 0xffff, 0, 0xffffffff }; /* AND masks for saving result in AL/AX/EAX. */
15814
15815	uint32_t const cbValue = s_aIOSizes[uIOSize];
15816	uint32_t const cbInstr = pVmxTransient->cbExitInstr;
15817	bool fUpdateRipAlready = false; /* ugly hack, should be temporary. */
15818	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
15819	if (fIOString)
15820	{
15821	/*
15822	* INS/OUTS - I/O String instruction.
15823	*
15824	* Use instruction-information if available, otherwise fall back on
15825	* interpreting the instruction.
15826	*/
15827	Log4Func(("cs:rip=%#04x:%#RX64 %#06x/%u %c str\n", pCtx->cs.Sel, pCtx->rip, uIOPort, cbValue, fIOWrite ? 'w' : 'r'));
15828	AssertReturn(pCtx->dx == uIOPort, VERR_VMX_IPE_2);
15829	bool const fInsOutsInfo = RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_INS_OUTS);
15830	if (fInsOutsInfo)
15831	{
15832	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
15833	AssertReturn(pVmxTransient->ExitInstrInfo.StrIo.u3AddrSize <= 2, VERR_VMX_IPE_3);
15834	AssertCompile(IEMMODE_16BIT == 0 && IEMMODE_32BIT == 1 && IEMMODE_64BIT == 2);
15835	IEMMODE const enmAddrMode = (IEMMODE)pVmxTransient->ExitInstrInfo.StrIo.u3AddrSize;
15836	bool const fRep = VMX_EXIT_QUAL_IO_IS_REP(pVmxTransient->uExitQual);
15837	if (fIOWrite)
15838	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, fRep, cbInstr,
15839	pVmxTransient->ExitInstrInfo.StrIo.iSegReg, true /fIoChecked/);
15840	else
15841	{
15842	/*
15843	* The segment prefix for INS cannot be overridden and is always ES. We can safely assume X86_SREG_ES.
15844	* Hence "iSegReg" field is undefined in the instruction-information field in VT-x for INS.
15845	* See Intel Instruction spec. for "INS".
15846	* See Intel spec. Table 27-8 "Format of the VM-Exit Instruction-Information Field as Used for INS and OUTS".
15847	*/
15848	rcStrict = IEMExecStringIoRead(pVCpu, cbValue, enmAddrMode, fRep, cbInstr, true /fIoChecked/);
15849	}
15850	}
15851	else
15852	rcStrict = IEMExecOne(pVCpu);
15853
15854	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP);
15855	fUpdateRipAlready = true;
15856	}
15857	else
15858	{
15859	/*
15860	* IN/OUT - I/O instruction.
15861	*/
15862	Log4Func(("cs:rip=%04x:%08RX64 %#06x/%u %c\n", pCtx->cs.Sel, pCtx->rip, uIOPort, cbValue, fIOWrite ? 'w' : 'r'));
15863	uint32_t const uAndVal = s_aIOOpAnd[uIOSize];
15864	Assert(!VMX_EXIT_QUAL_IO_IS_REP(pVmxTransient->uExitQual));
15865	if (fIOWrite)
15866	{
15867	rcStrict = IOMIOPortWrite(pVM, pVCpu, uIOPort, pCtx->eax & uAndVal, cbValue);
15868	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
15869	if ( rcStrict == VINF_IOM_R3_IOPORT_WRITE
15870	&& !pCtx->eflags.Bits.u1TF)
15871	rcStrict = EMRZSetPendingIoPortWrite(pVCpu, uIOPort, cbInstr, cbValue, pCtx->eax & uAndVal);
15872	}
15873	else
15874	{
15875	uint32_t u32Result = 0;
15876	rcStrict = IOMIOPortRead(pVM, pVCpu, uIOPort, &u32Result, cbValue);
15877	if (IOM_SUCCESS(rcStrict))
15878	{
15879	/* Save result of I/O IN instr. in AL/AX/EAX. */
15880	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Result & uAndVal);
15881	}
15882	if ( rcStrict == VINF_IOM_R3_IOPORT_READ
15883	&& !pCtx->eflags.Bits.u1TF)
15884	rcStrict = EMRZSetPendingIoPortRead(pVCpu, uIOPort, cbInstr, cbValue);
15885	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
15886	}
15887	}
15888
15889	if (IOM_SUCCESS(rcStrict))
15890	{
15891	if (!fUpdateRipAlready)
15892	{
15893	hmR0VmxAdvanceGuestRipBy(pVCpu, cbInstr);
15894	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP);
15895	}
15896
15897	/*
15898	* INS/OUTS with REP prefix updates RFLAGS, can be observed with triple-fault guru
15899	* while booting Fedora 17 64-bit guest.
15900	*
15901	* See Intel Instruction reference for REP/REPE/REPZ/REPNE/REPNZ.
15902	*/
15903	if (fIOString)
15904	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RFLAGS);
15905
15906	/*
15907	* If any I/O breakpoints are armed, we need to check if one triggered
15908	* and take appropriate action.
15909	* Note that the I/O breakpoint type is undefined if CR4.DE is 0.
15910	*/
15911	rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_DR7);
15912	AssertRCReturn(rc, rc);
15913
15914	/** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
15915	* execution engines about whether hyper BPs and such are pending. */
15916	uint32_t const uDr7 = pCtx->dr[7];
15917	if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
15918	&& X86_DR7_ANY_RW_IO(uDr7)
15919	&& (pCtx->cr4 & X86_CR4_DE))
15920	\|\| DBGFBpIsHwIoArmed(pVM)))
15921	{
15922	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
15923
15924	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
15925	VMMRZCallRing3Disable(pVCpu);
15926	HM_DISABLE_PREEMPT(pVCpu);
15927
15928	bool fIsGuestDbgActive = CPUMR0DebugStateMaybeSaveGuest(pVCpu, true /* fDr6 */);
15929
15930	VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, pCtx, uIOPort, cbValue);
15931	if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
15932	{
15933	/* Raise #DB. */
15934	if (fIsGuestDbgActive)
15935	ASMSetDR6(pCtx->dr[6]);
15936	if (pCtx->dr[7] != uDr7)
15937	pVCpu->hm.s.fCtxChanged \|= HM_CHANGED_GUEST_DR7;
15938
15939	hmR0VmxSetPendingXcptDB(pVCpu);
15940	}
15941	/* rcStrict is VINF_SUCCESS, VINF_IOM_R3_IOPORT_COMMIT_WRITE, or in [VINF_EM_FIRST..VINF_EM_LAST],
15942	however we can ditch VINF_IOM_R3_IOPORT_COMMIT_WRITE as it has VMCPU_FF_IOM as backup. */
15943	else if ( rcStrict2 != VINF_SUCCESS
15944	&& (rcStrict == VINF_SUCCESS \|\| rcStrict2 < rcStrict))
15945	rcStrict = rcStrict2;
15946	AssertCompile(VINF_EM_LAST < VINF_IOM_R3_IOPORT_COMMIT_WRITE);
15947
15948	HM_RESTORE_PREEMPT();
15949	VMMRZCallRing3Enable(pVCpu);
15950	}
15951	}
15952
15953	#ifdef VBOX_STRICT
15954	if ( rcStrict == VINF_IOM_R3_IOPORT_READ
15955	\|\| rcStrict == VINF_EM_PENDING_R3_IOPORT_READ)
15956	Assert(!fIOWrite);
15957	else if ( rcStrict == VINF_IOM_R3_IOPORT_WRITE
15958	\|\| rcStrict == VINF_IOM_R3_IOPORT_COMMIT_WRITE
15959	\|\| rcStrict == VINF_EM_PENDING_R3_IOPORT_WRITE)
15960	Assert(fIOWrite);
15961	else
15962	{
15963	# if 0 /** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
15964	* statuses, that the VMM device and some others may return. See
15965	* IOM_SUCCESS() for guidance. */
15966	AssertMsg( RT_FAILURE(rcStrict)
15967	\|\| rcStrict == VINF_SUCCESS
15968	\|\| rcStrict == VINF_EM_RAW_EMULATE_INSTR
15969	\|\| rcStrict == VINF_EM_DBG_BREAKPOINT
15970	\|\| rcStrict == VINF_EM_RAW_GUEST_TRAP
15971	\|\| rcStrict == VINF_EM_RAW_TO_R3
15972	\|\| rcStrict == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
15973	# endif
15974	}
15975	#endif
15976	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitIO, y1);
15977	}
15978	else
15979	{
15980	/*
15981	* Frequent exit or something needing probing. Get state and call EMHistoryExec.
15982	*/
15983	int rc2 = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
15984	AssertRCReturn(rc2, rc2);
15985	STAM_COUNTER_INC(!fIOString ? fIOWrite ? &pVCpu->hm.s.StatExitIOWrite : &pVCpu->hm.s.StatExitIORead
15986	: fIOWrite ? &pVCpu->hm.s.StatExitIOStringWrite : &pVCpu->hm.s.StatExitIOStringRead);
15987	Log4(("IOExit/%u: %04x:%08RX64: %s%s%s %#x LB %u -> EMHistoryExec\n",
15988	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
15989	VMX_EXIT_QUAL_IO_IS_REP(pVmxTransient->uExitQual) ? "REP " : "",
15990	fIOWrite ? "OUT" : "IN", fIOString ? "S" : "", uIOPort, uIOSize));
15991
15992	rcStrict = EMHistoryExec(pVCpu, pExitRec, 0);
15993	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
15994
15995	Log4(("IOExit/%u: %04x:%08RX64: EMHistoryExec -> %Rrc + %04x:%08RX64\n",
15996	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
15997	VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
15998	}
15999	return rcStrict;
16000	}
16001
16002
16003	/**
16004	* VM-exit handler for task switches (VMX_EXIT_TASK_SWITCH). Unconditional
16005	* VM-exit.
16006	*/
16007	HMVMX_EXIT_DECL hmR0VmxExitTaskSwitch(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16008	{
16009	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16010
16011	/* Check if this task-switch occurred while delivery an event through the guest IDT. */
16012	hmR0VmxReadExitQualVmcs(pVmxTransient);
16013	if (VMX_EXIT_QUAL_TASK_SWITCH_TYPE(pVmxTransient->uExitQual) == VMX_EXIT_QUAL_TASK_SWITCH_TYPE_IDT)
16014	{
16015	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
16016	if (VMX_IDT_VECTORING_INFO_IS_VALID(pVmxTransient->uIdtVectoringInfo))
16017	{
16018	uint32_t uErrCode;
16019	if (VMX_IDT_VECTORING_INFO_IS_ERROR_CODE_VALID(pVmxTransient->uIdtVectoringInfo))
16020	{
16021	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
16022	uErrCode = pVmxTransient->uIdtVectoringErrorCode;
16023	}
16024	else
16025	uErrCode = 0;
16026
16027	RTGCUINTPTR GCPtrFaultAddress;
16028	if (VMX_IDT_VECTORING_INFO_IS_XCPT_PF(pVmxTransient->uIdtVectoringInfo))
16029	GCPtrFaultAddress = pVCpu->cpum.GstCtx.cr2;
16030	else
16031	GCPtrFaultAddress = 0;
16032
16033	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16034
16035	hmR0VmxSetPendingEvent(pVCpu, VMX_ENTRY_INT_INFO_FROM_EXIT_IDT_INFO(pVmxTransient->uIdtVectoringInfo),
16036	pVmxTransient->cbExitInstr, uErrCode, GCPtrFaultAddress);
16037
16038	Log4Func(("Pending event. uIntType=%#x uVector=%#x\n", VMX_IDT_VECTORING_INFO_TYPE(pVmxTransient->uIdtVectoringInfo),
16039	VMX_IDT_VECTORING_INFO_VECTOR(pVmxTransient->uIdtVectoringInfo)));
16040	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
16041	return VINF_EM_RAW_INJECT_TRPM_EVENT;
16042	}
16043	}
16044
16045	/* Fall back to the interpreter to emulate the task-switch. */
16046	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
16047	return VERR_EM_INTERPRETER;
16048	}
16049
16050
16051	/**
16052	* VM-exit handler for monitor-trap-flag (VMX_EXIT_MTF). Conditional VM-exit.
16053	*/
16054	HMVMX_EXIT_DECL hmR0VmxExitMtf(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16055	{
16056	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16057
16058	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
16059	pVmcsInfo->u32ProcCtls &= ~VMX_PROC_CTLS_MONITOR_TRAP_FLAG;
16060	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
16061	AssertRC(rc);
16062	return VINF_EM_DBG_STEPPED;
16063	}
16064
16065
16066	/**
16067	* VM-exit handler for APIC access (VMX_EXIT_APIC_ACCESS). Conditional VM-exit.
16068	*/
16069	HMVMX_EXIT_DECL hmR0VmxExitApicAccess(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16070	{
16071	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16072	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitApicAccess);
16073
16074	hmR0VmxReadExitIntInfoVmcs(pVmxTransient);
16075	hmR0VmxReadExitIntErrorCodeVmcs(pVmxTransient);
16076	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16077	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
16078	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
16079
16080	/*
16081	* If this VM-exit occurred while delivering an event through the guest IDT, handle it accordingly.
16082	*/
16083	VBOXSTRICTRC rcStrict = hmR0VmxCheckExitDueToEventDelivery(pVCpu, pVmxTransient);
16084	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16085	{
16086	/* For some crazy guest, if an event delivery causes an APIC-access VM-exit, go to instruction emulation. */
16087	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
16088	{
16089	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterpret);
16090	return VINF_EM_RAW_INJECT_TRPM_EVENT;
16091	}
16092	}
16093	else
16094	{
16095	Assert(rcStrict != VINF_HM_DOUBLE_FAULT);
16096	return rcStrict;
16097	}
16098
16099	/* IOMMIOPhysHandler() below may call into IEM, save the necessary state. */
16100	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
16101	hmR0VmxReadExitQualVmcs(pVmxTransient);
16102	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
16103	AssertRCReturn(rc, rc);
16104
16105	/* See Intel spec. 27-6 "Exit Qualifications for APIC-access VM-exits from Linear Accesses & Guest-Phyiscal Addresses" */
16106	uint32_t const uAccessType = VMX_EXIT_QUAL_APIC_ACCESS_TYPE(pVmxTransient->uExitQual);
16107	switch (uAccessType)
16108	{
16109	case VMX_APIC_ACCESS_TYPE_LINEAR_WRITE:
16110	case VMX_APIC_ACCESS_TYPE_LINEAR_READ:
16111	{
16112	AssertMsg( !(pVmcsInfo->u32ProcCtls & VMX_PROC_CTLS_USE_TPR_SHADOW)
16113	\|\| VMX_EXIT_QUAL_APIC_ACCESS_OFFSET(pVmxTransient->uExitQual) != XAPIC_OFF_TPR,
16114	("hmR0VmxExitApicAccess: can't access TPR offset while using TPR shadowing.\n"));
16115
16116	RTGCPHYS GCPhys = pVCpu->hm.s.vmx.u64GstMsrApicBase; /* Always up-to-date, as it is not part of the VMCS. */
16117	GCPhys &= PAGE_BASE_GC_MASK;
16118	GCPhys += VMX_EXIT_QUAL_APIC_ACCESS_OFFSET(pVmxTransient->uExitQual);
16119	Log4Func(("Linear access uAccessType=%#x GCPhys=%#RGp Off=%#x\n", uAccessType, GCPhys,
16120	VMX_EXIT_QUAL_APIC_ACCESS_OFFSET(pVmxTransient->uExitQual)));
16121
16122	rcStrict = IOMR0MmioPhysHandler(pVCpu->CTX_SUFF(pVM), pVCpu,
16123	uAccessType == VMX_APIC_ACCESS_TYPE_LINEAR_READ ? 0 : X86_TRAP_PF_RW, GCPhys);
16124	Log4Func(("IOMMMIOPhysHandler returned %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
16125	if ( rcStrict == VINF_SUCCESS
16126	\|\| rcStrict == VERR_PAGE_TABLE_NOT_PRESENT
16127	\|\| rcStrict == VERR_PAGE_NOT_PRESENT)
16128	{
16129	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RSP \| HM_CHANGED_GUEST_RFLAGS
16130	\| HM_CHANGED_GUEST_APIC_TPR);
16131	rcStrict = VINF_SUCCESS;
16132	}
16133	break;
16134	}
16135
16136	default:
16137	{
16138	Log4Func(("uAccessType=%#x\n", uAccessType));
16139	rcStrict = VINF_EM_RAW_EMULATE_INSTR;
16140	break;
16141	}
16142	}
16143
16144	if (rcStrict != VINF_SUCCESS)
16145	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchApicAccessToR3);
16146	return rcStrict;
16147	}
16148
16149
16150	/**
16151	* VM-exit handler for debug-register accesses (VMX_EXIT_MOV_DRX). Conditional
16152	* VM-exit.
16153	*/
16154	HMVMX_EXIT_DECL hmR0VmxExitMovDRx(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16155	{
16156	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16157	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
16158
16159	/*
16160	* We might also get this VM-exit if the nested-guest isn't intercepting MOV DRx accesses.
16161	* In such a case, rather than disabling MOV DRx intercepts and resuming execution, we
16162	* must emulate the MOV DRx access.
16163	*/
16164	if (!pVmxTransient->fIsNestedGuest)
16165	{
16166	/* We should -not- get this VM-exit if the guest's debug registers were active. */
16167	if (pVmxTransient->fWasGuestDebugStateActive)
16168	{
16169	AssertMsgFailed(("Unexpected MOV DRx exit\n"));
16170	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, pVmxTransient->uExitReason);
16171	}
16172
16173	if ( !pVCpu->hm.s.fSingleInstruction
16174	&& !pVmxTransient->fWasHyperDebugStateActive)
16175	{
16176	Assert(!DBGFIsStepping(pVCpu));
16177	Assert(pVmcsInfo->u32XcptBitmap & RT_BIT(X86_XCPT_DB));
16178
16179	/* Don't intercept MOV DRx any more. */
16180	pVmcsInfo->u32ProcCtls &= ~VMX_PROC_CTLS_MOV_DR_EXIT;
16181	int rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC, pVmcsInfo->u32ProcCtls);
16182	AssertRC(rc);
16183
16184	/* We're playing with the host CPU state here, make sure we can't preempt or longjmp. */
16185	VMMRZCallRing3Disable(pVCpu);
16186	HM_DISABLE_PREEMPT(pVCpu);
16187
16188	/* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
16189	CPUMR0LoadGuestDebugState(pVCpu, true /* include DR6 */);
16190	Assert(CPUMIsGuestDebugStateActive(pVCpu));
16191
16192	HM_RESTORE_PREEMPT();
16193	VMMRZCallRing3Enable(pVCpu);
16194
16195	#ifdef VBOX_WITH_STATISTICS
16196	hmR0VmxReadExitQualVmcs(pVmxTransient);
16197	if (VMX_EXIT_QUAL_DRX_DIRECTION(pVmxTransient->uExitQual) == VMX_EXIT_QUAL_DRX_DIRECTION_WRITE)
16198	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
16199	else
16200	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
16201	#endif
16202	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
16203	return VINF_SUCCESS;
16204	}
16205	}
16206
16207	/*
16208	* EMInterpretDRx[Write\|Read]() calls CPUMIsGuestIn64BitCode() which requires EFER MSR, CS.
16209	* The EFER MSR is always up-to-date.
16210	* Update the segment registers and DR7 from the CPU.
16211	*/
16212	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
16213	hmR0VmxReadExitQualVmcs(pVmxTransient);
16214	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, CPUMCTX_EXTRN_SREG_MASK \| CPUMCTX_EXTRN_DR7);
16215	AssertRCReturn(rc, rc);
16216	Log4Func(("cs:rip=%#04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
16217
16218	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
16219	if (VMX_EXIT_QUAL_DRX_DIRECTION(pVmxTransient->uExitQual) == VMX_EXIT_QUAL_DRX_DIRECTION_WRITE)
16220	{
16221	rc = EMInterpretDRxWrite(pVM, pVCpu, CPUMCTX2CORE(pCtx),
16222	VMX_EXIT_QUAL_DRX_REGISTER(pVmxTransient->uExitQual),
16223	VMX_EXIT_QUAL_DRX_GENREG(pVmxTransient->uExitQual));
16224	if (RT_SUCCESS(rc))
16225	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_DR7);
16226	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
16227	}
16228	else
16229	{
16230	rc = EMInterpretDRxRead(pVM, pVCpu, CPUMCTX2CORE(pCtx),
16231	VMX_EXIT_QUAL_DRX_GENREG(pVmxTransient->uExitQual),
16232	VMX_EXIT_QUAL_DRX_REGISTER(pVmxTransient->uExitQual));
16233	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
16234	}
16235
16236	Assert(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER);
16237	if (RT_SUCCESS(rc))
16238	{
16239	int rc2 = hmR0VmxAdvanceGuestRip(pVCpu, pVmxTransient);
16240	AssertRCReturn(rc2, rc2);
16241	return VINF_SUCCESS;
16242	}
16243	return rc;
16244	}
16245
16246
16247	/**
16248	* VM-exit handler for EPT misconfiguration (VMX_EXIT_EPT_MISCONFIG).
16249	* Conditional VM-exit.
16250	*/
16251	HMVMX_EXIT_DECL hmR0VmxExitEptMisconfig(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16252	{
16253	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16254	Assert(pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging);
16255
16256	hmR0VmxReadExitIntInfoVmcs(pVmxTransient);
16257	hmR0VmxReadExitIntErrorCodeVmcs(pVmxTransient);
16258	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16259	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
16260	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
16261
16262	/*
16263	* If this VM-exit occurred while delivering an event through the guest IDT, handle it accordingly.
16264	*/
16265	VBOXSTRICTRC rcStrict = hmR0VmxCheckExitDueToEventDelivery(pVCpu, pVmxTransient);
16266	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16267	{
16268	/*
16269	* In the unlikely case where delivering an event causes an EPT misconfig (MMIO), go back to
16270	* instruction emulation to inject the original event. Otherwise, injecting the original event
16271	* using hardware-assisted VMX would trigger the same EPT misconfig VM-exit again.
16272	*/
16273	if (!pVCpu->hm.s.Event.fPending)
16274	{ /* likely */ }
16275	else
16276	{
16277	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterpret);
16278	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
16279	/** @todo NSTVMX: Think about how this should be handled. */
16280	if (pVmxTransient->fIsNestedGuest)
16281	return VERR_VMX_IPE_3;
16282	#endif
16283	return VINF_EM_RAW_INJECT_TRPM_EVENT;
16284	}
16285	}
16286	else
16287	{
16288	Assert(rcStrict != VINF_HM_DOUBLE_FAULT);
16289	return rcStrict;
16290	}
16291
16292	/*
16293	* Get sufficient state and update the exit history entry.
16294	*/
16295	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
16296	hmR0VmxReadGuestPhysicalAddrVmcs(pVmxTransient);
16297	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
16298	AssertRCReturn(rc, rc);
16299
16300	RTGCPHYS const GCPhys = pVmxTransient->uGuestPhysicalAddr;
16301	PCEMEXITREC pExitRec = EMHistoryUpdateFlagsAndTypeAndPC(pVCpu,
16302	EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_MMIO),
16303	pVCpu->cpum.GstCtx.rip + pVCpu->cpum.GstCtx.cs.u64Base);
16304	if (!pExitRec)
16305	{
16306	/*
16307	* If we succeed, resume guest execution.
16308	* If we fail in interpreting the instruction because we couldn't get the guest physical address
16309	* of the page containing the instruction via the guest's page tables (we would invalidate the guest page
16310	* in the host TLB), resume execution which would cause a guest page fault to let the guest handle this
16311	* weird case. See @bugref{6043}.
16312	*/
16313	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
16314	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
16315	/** @todo bird: We can probably just go straight to IOM here and assume that
16316	* it's MMIO, then fall back on PGM if that hunch didn't work out so
16317	* well. However, we need to address that aliasing workarounds that
16318	* PGMR0Trap0eHandlerNPMisconfig implements. So, some care is needed.
16319	*
16320	* Might also be interesting to see if we can get this done more or
16321	* less locklessly inside IOM. Need to consider the lookup table
16322	* updating and use a bit more carefully first (or do all updates via
16323	* rendezvous) */
16324	rcStrict = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, PGMMODE_EPT, CPUMCTX2CORE(pCtx), GCPhys, UINT32_MAX);
16325	Log4Func(("At %#RGp RIP=%#RX64 rc=%Rrc\n", GCPhys, pCtx->rip, VBOXSTRICTRC_VAL(rcStrict)));
16326	if ( rcStrict == VINF_SUCCESS
16327	\|\| rcStrict == VERR_PAGE_TABLE_NOT_PRESENT
16328	\|\| rcStrict == VERR_PAGE_NOT_PRESENT)
16329	{
16330	/* Successfully handled MMIO operation. */
16331	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RSP \| HM_CHANGED_GUEST_RFLAGS
16332	\| HM_CHANGED_GUEST_APIC_TPR);
16333	rcStrict = VINF_SUCCESS;
16334	}
16335	}
16336	else
16337	{
16338	/*
16339	* Frequent exit or something needing probing. Call EMHistoryExec.
16340	*/
16341	Log4(("EptMisscfgExit/%u: %04x:%08RX64: %RGp -> EMHistoryExec\n",
16342	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, GCPhys));
16343
16344	rcStrict = EMHistoryExec(pVCpu, pExitRec, 0);
16345	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
16346
16347	Log4(("EptMisscfgExit/%u: %04x:%08RX64: EMHistoryExec -> %Rrc + %04x:%08RX64\n",
16348	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
16349	VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
16350	}
16351	return rcStrict;
16352	}
16353
16354
16355	/**
16356	* VM-exit handler for EPT violation (VMX_EXIT_EPT_VIOLATION). Conditional
16357	* VM-exit.
16358	*/
16359	HMVMX_EXIT_DECL hmR0VmxExitEptViolation(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16360	{
16361	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16362	Assert(pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging);
16363
16364	hmR0VmxReadExitQualVmcs(pVmxTransient);
16365	hmR0VmxReadExitIntInfoVmcs(pVmxTransient);
16366	hmR0VmxReadExitIntErrorCodeVmcs(pVmxTransient);
16367	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16368	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
16369	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
16370
16371	/*
16372	* If this VM-exit occurred while delivering an event through the guest IDT, handle it accordingly.
16373	*/
16374	VBOXSTRICTRC rcStrict = hmR0VmxCheckExitDueToEventDelivery(pVCpu, pVmxTransient);
16375	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16376	{
16377	/*
16378	* If delivery of an event causes an EPT violation (true nested #PF and not MMIO),
16379	* we shall resolve the nested #PF and re-inject the original event.
16380	*/
16381	if (pVCpu->hm.s.Event.fPending)
16382	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectReflectNPF);
16383	}
16384	else
16385	{
16386	Assert(rcStrict != VINF_HM_DOUBLE_FAULT);
16387	return rcStrict;
16388	}
16389
16390	PVMXVMCSINFO pVmcsInfo = pVmxTransient->pVmcsInfo;
16391	hmR0VmxReadGuestPhysicalAddrVmcs(pVmxTransient);
16392	int rc = hmR0VmxImportGuestState(pVCpu, pVmcsInfo, IEM_CPUMCTX_EXTRN_MUST_MASK);
16393	AssertRCReturn(rc, rc);
16394
16395	RTGCPHYS const GCPhys = pVmxTransient->uGuestPhysicalAddr;
16396	uint64_t const uExitQual = pVmxTransient->uExitQual;
16397	AssertMsg(((pVmxTransient->uExitQual >> 7) & 3) != 2, ("%#RX64", uExitQual));
16398
16399	RTGCUINT uErrorCode = 0;
16400	if (uExitQual & VMX_EXIT_QUAL_EPT_INSTR_FETCH)
16401	uErrorCode \|= X86_TRAP_PF_ID;
16402	if (uExitQual & VMX_EXIT_QUAL_EPT_DATA_WRITE)
16403	uErrorCode \|= X86_TRAP_PF_RW;
16404	if (uExitQual & VMX_EXIT_QUAL_EPT_ENTRY_PRESENT)
16405	uErrorCode \|= X86_TRAP_PF_P;
16406
16407	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
16408	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
16409	Log4Func(("at %#RX64 (%#RX64 errcode=%#x) cs:rip=%#04x:%#RX64\n", GCPhys, uExitQual, uErrorCode, pCtx->cs.Sel, pCtx->rip));
16410
16411	/*
16412	* Handle the pagefault trap for the nested shadow table.
16413	*/
16414	TRPMAssertXcptPF(pVCpu, GCPhys, uErrorCode);
16415	rcStrict = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, PGMMODE_EPT, uErrorCode, CPUMCTX2CORE(pCtx), GCPhys);
16416	TRPMResetTrap(pVCpu);
16417
16418	/* Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}. */
16419	if ( rcStrict == VINF_SUCCESS
16420	\|\| rcStrict == VERR_PAGE_TABLE_NOT_PRESENT
16421	\|\| rcStrict == VERR_PAGE_NOT_PRESENT)
16422	{
16423	/* Successfully synced our nested page tables. */
16424	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf);
16425	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RSP \| HM_CHANGED_GUEST_RFLAGS);
16426	return VINF_SUCCESS;
16427	}
16428
16429	Log4Func(("EPT return to ring-3 rcStrict2=%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
16430	return rcStrict;
16431	}
16432
16433
16434	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
16435	/**
16436	* VM-exit handler for VMCLEAR (VMX_EXIT_VMCLEAR). Unconditional VM-exit.
16437	*/
16438	HMVMX_EXIT_DECL hmR0VmxExitVmclear(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16439	{
16440	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16441
16442	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16443	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16444	hmR0VmxReadExitQualVmcs(pVmxTransient);
16445	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16446	\| CPUMCTX_EXTRN_HWVIRT
16447	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16448	AssertRCReturn(rc, rc);
16449
16450	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16451
16452	VMXVEXITINFO ExitInfo;
16453	RT_ZERO(ExitInfo);
16454	ExitInfo.uReason = pVmxTransient->uExitReason;
16455	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16456	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16457	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16458	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_READ, &ExitInfo.GCPtrEffAddr);
16459
16460	VBOXSTRICTRC rcStrict = IEMExecDecodedVmclear(pVCpu, &ExitInfo);
16461	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16462	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_HWVIRT);
16463	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16464	{
16465	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16466	rcStrict = VINF_SUCCESS;
16467	}
16468	return rcStrict;
16469	}
16470
16471
16472	/**
16473	* VM-exit handler for VMLAUNCH (VMX_EXIT_VMLAUNCH). Unconditional VM-exit.
16474	*/
16475	HMVMX_EXIT_DECL hmR0VmxExitVmlaunch(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16476	{
16477	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16478
16479	/* Import the entire VMCS state for now as we would be switching VMCS on successful VMLAUNCH,
16480	otherwise we could import just IEM_CPUMCTX_EXTRN_VMX_VMENTRY_MASK. */
16481	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16482	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
16483	AssertRCReturn(rc, rc);
16484
16485	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16486
16487	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExitVmentry, z);
16488	VBOXSTRICTRC rcStrict = IEMExecDecodedVmlaunchVmresume(pVCpu, pVmxTransient->cbExitInstr, VMXINSTRID_VMLAUNCH);
16489	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitVmentry, z);
16490	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16491	{
16492	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
16493	if (CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
16494	rcStrict = VINF_VMX_VMLAUNCH_VMRESUME;
16495	}
16496	Assert(rcStrict != VINF_IEM_RAISED_XCPT);
16497	return rcStrict;
16498	}
16499
16500
16501	/**
16502	* VM-exit handler for VMPTRLD (VMX_EXIT_VMPTRLD). Unconditional VM-exit.
16503	*/
16504	HMVMX_EXIT_DECL hmR0VmxExitVmptrld(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16505	{
16506	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16507
16508	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16509	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16510	hmR0VmxReadExitQualVmcs(pVmxTransient);
16511	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16512	\| CPUMCTX_EXTRN_HWVIRT
16513	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16514	AssertRCReturn(rc, rc);
16515
16516	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16517
16518	VMXVEXITINFO ExitInfo;
16519	RT_ZERO(ExitInfo);
16520	ExitInfo.uReason = pVmxTransient->uExitReason;
16521	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16522	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16523	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16524	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_READ, &ExitInfo.GCPtrEffAddr);
16525
16526	VBOXSTRICTRC rcStrict = IEMExecDecodedVmptrld(pVCpu, &ExitInfo);
16527	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16528	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_HWVIRT);
16529	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16530	{
16531	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16532	rcStrict = VINF_SUCCESS;
16533	}
16534	return rcStrict;
16535	}
16536
16537
16538	/**
16539	* VM-exit handler for VMPTRST (VMX_EXIT_VMPTRST). Unconditional VM-exit.
16540	*/
16541	HMVMX_EXIT_DECL hmR0VmxExitVmptrst(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16542	{
16543	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16544
16545	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16546	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16547	hmR0VmxReadExitQualVmcs(pVmxTransient);
16548	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16549	\| CPUMCTX_EXTRN_HWVIRT
16550	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16551	AssertRCReturn(rc, rc);
16552
16553	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16554
16555	VMXVEXITINFO ExitInfo;
16556	RT_ZERO(ExitInfo);
16557	ExitInfo.uReason = pVmxTransient->uExitReason;
16558	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16559	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16560	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16561	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_WRITE, &ExitInfo.GCPtrEffAddr);
16562
16563	VBOXSTRICTRC rcStrict = IEMExecDecodedVmptrst(pVCpu, &ExitInfo);
16564	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16565	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
16566	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16567	{
16568	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16569	rcStrict = VINF_SUCCESS;
16570	}
16571	return rcStrict;
16572	}
16573
16574
16575	/**
16576	* VM-exit handler for VMREAD (VMX_EXIT_VMREAD). Conditional VM-exit.
16577	*/
16578	HMVMX_EXIT_DECL hmR0VmxExitVmread(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16579	{
16580	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16581
16582	/*
16583	* Strictly speaking we should not get VMREAD VM-exits for shadow VMCS fields and
16584	* thus might not need to import the shadow VMCS state, it's safer just in case
16585	* code elsewhere dares look at unsynced VMCS fields.
16586	*/
16587	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16588	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16589	hmR0VmxReadExitQualVmcs(pVmxTransient);
16590	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16591	\| CPUMCTX_EXTRN_HWVIRT
16592	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16593	AssertRCReturn(rc, rc);
16594
16595	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16596
16597	VMXVEXITINFO ExitInfo;
16598	RT_ZERO(ExitInfo);
16599	ExitInfo.uReason = pVmxTransient->uExitReason;
16600	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16601	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16602	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16603	if (!ExitInfo.InstrInfo.VmreadVmwrite.fIsRegOperand)
16604	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_WRITE, &ExitInfo.GCPtrEffAddr);
16605
16606	VBOXSTRICTRC rcStrict = IEMExecDecodedVmread(pVCpu, &ExitInfo);
16607	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16608	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
16609	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16610	{
16611	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16612	rcStrict = VINF_SUCCESS;
16613	}
16614	return rcStrict;
16615	}
16616
16617
16618	/**
16619	* VM-exit handler for VMRESUME (VMX_EXIT_VMRESUME). Unconditional VM-exit.
16620	*/
16621	HMVMX_EXIT_DECL hmR0VmxExitVmresume(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16622	{
16623	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16624
16625	/* Import the entire VMCS state for now as we would be switching VMCS on successful VMRESUME,
16626	otherwise we could import just IEM_CPUMCTX_EXTRN_VMX_VMENTRY_MASK. */
16627	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16628	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
16629	AssertRCReturn(rc, rc);
16630
16631	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16632
16633	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExitVmentry, z);
16634	VBOXSTRICTRC rcStrict = IEMExecDecodedVmlaunchVmresume(pVCpu, pVmxTransient->cbExitInstr, VMXINSTRID_VMRESUME);
16635	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitVmentry, z);
16636	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16637	{
16638	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
16639	if (CPUMIsGuestInVmxNonRootMode(&pVCpu->cpum.GstCtx))
16640	rcStrict = VINF_VMX_VMLAUNCH_VMRESUME;
16641	}
16642	Assert(rcStrict != VINF_IEM_RAISED_XCPT);
16643	return rcStrict;
16644	}
16645
16646
16647	/**
16648	* VM-exit handler for VMWRITE (VMX_EXIT_VMWRITE). Conditional VM-exit.
16649	*/
16650	HMVMX_EXIT_DECL hmR0VmxExitVmwrite(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16651	{
16652	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16653
16654	/*
16655	* Although we should not get VMWRITE VM-exits for shadow VMCS fields, since our HM hook
16656	* gets invoked when IEM's VMWRITE instruction emulation modifies the current VMCS and it
16657	* flags re-loading the entire shadow VMCS, we should save the entire shadow VMCS here.
16658	*/
16659	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16660	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16661	hmR0VmxReadExitQualVmcs(pVmxTransient);
16662	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16663	\| CPUMCTX_EXTRN_HWVIRT
16664	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16665	AssertRCReturn(rc, rc);
16666
16667	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16668
16669	VMXVEXITINFO ExitInfo;
16670	RT_ZERO(ExitInfo);
16671	ExitInfo.uReason = pVmxTransient->uExitReason;
16672	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16673	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16674	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16675	if (!ExitInfo.InstrInfo.VmreadVmwrite.fIsRegOperand)
16676	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_READ, &ExitInfo.GCPtrEffAddr);
16677
16678	VBOXSTRICTRC rcStrict = IEMExecDecodedVmwrite(pVCpu, &ExitInfo);
16679	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16680	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_HWVIRT);
16681	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16682	{
16683	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16684	rcStrict = VINF_SUCCESS;
16685	}
16686	return rcStrict;
16687	}
16688
16689
16690	/**
16691	* VM-exit handler for VMXOFF (VMX_EXIT_VMXOFF). Unconditional VM-exit.
16692	*/
16693	HMVMX_EXIT_DECL hmR0VmxExitVmxoff(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16694	{
16695	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16696
16697	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16698	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_CR4
16699	\| CPUMCTX_EXTRN_HWVIRT
16700	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK);
16701	AssertRCReturn(rc, rc);
16702
16703	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16704
16705	VBOXSTRICTRC rcStrict = IEMExecDecodedVmxoff(pVCpu, pVmxTransient->cbExitInstr);
16706	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16707	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_HWVIRT);
16708	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16709	{
16710	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16711	rcStrict = VINF_SUCCESS;
16712	}
16713	return rcStrict;
16714	}
16715
16716
16717	/**
16718	* VM-exit handler for VMXON (VMX_EXIT_VMXON). Unconditional VM-exit.
16719	*/
16720	HMVMX_EXIT_DECL hmR0VmxExitVmxon(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16721	{
16722	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16723
16724	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16725	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16726	hmR0VmxReadExitQualVmcs(pVmxTransient);
16727	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16728	\| CPUMCTX_EXTRN_HWVIRT
16729	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16730	AssertRCReturn(rc, rc);
16731
16732	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16733
16734	VMXVEXITINFO ExitInfo;
16735	RT_ZERO(ExitInfo);
16736	ExitInfo.uReason = pVmxTransient->uExitReason;
16737	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16738	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16739	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16740	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_READ, &ExitInfo.GCPtrEffAddr);
16741
16742	VBOXSTRICTRC rcStrict = IEMExecDecodedVmxon(pVCpu, &ExitInfo);
16743	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16744	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS \| HM_CHANGED_GUEST_HWVIRT);
16745	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16746	{
16747	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16748	rcStrict = VINF_SUCCESS;
16749	}
16750	return rcStrict;
16751	}
16752
16753
16754	/**
16755	* VM-exit handler for INVVPID (VMX_EXIT_INVVPID). Unconditional VM-exit.
16756	*/
16757	HMVMX_EXIT_DECL hmR0VmxExitInvvpid(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16758	{
16759	HMVMX_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16760
16761	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16762	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
16763	hmR0VmxReadExitQualVmcs(pVmxTransient);
16764	int rc = hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_SREG_MASK
16765	\| IEM_CPUMCTX_EXTRN_EXEC_DECODED_MEM_MASK);
16766	AssertRCReturn(rc, rc);
16767
16768	HMVMX_CHECK_EXIT_DUE_TO_VMX_INSTR(pVCpu, pVmxTransient->uExitReason);
16769
16770	VMXVEXITINFO ExitInfo;
16771	RT_ZERO(ExitInfo);
16772	ExitInfo.uReason = pVmxTransient->uExitReason;
16773	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16774	ExitInfo.InstrInfo.u = pVmxTransient->ExitInstrInfo.u;
16775	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16776	HMVMX_DECODE_MEM_OPERAND(pVCpu, ExitInfo.InstrInfo.u, ExitInfo.u64Qual, VMXMEMACCESS_READ, &ExitInfo.GCPtrEffAddr);
16777
16778	VBOXSTRICTRC rcStrict = IEMExecDecodedInvvpid(pVCpu, &ExitInfo);
16779	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
16780	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_RIP \| HM_CHANGED_GUEST_RFLAGS);
16781	else if (rcStrict == VINF_IEM_RAISED_XCPT)
16782	{
16783	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
16784	rcStrict = VINF_SUCCESS;
16785	}
16786	return rcStrict;
16787	}
16788	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
16789	/** @} */
16790
16791
16792	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
16793	/** @name Nested-guest VM-exit handlers.
16794	* @{
16795	*/
16796	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
16797	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Nested-guest VM-exit handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
16798	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
16799
16800	/**
16801	* Nested-guest VM-exit handler for exceptions or NMIs (VMX_EXIT_XCPT_OR_NMI).
16802	* Conditional VM-exit.
16803	*/
16804	HMVMX_EXIT_DECL hmR0VmxExitXcptOrNmiNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16805	{
16806	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16807
16808	hmR0VmxReadExitIntInfoVmcs(pVmxTransient);
16809
16810	uint64_t const uExitIntInfo = pVmxTransient->uExitIntInfo;
16811	uint32_t const uExitIntType = VMX_EXIT_INT_INFO_TYPE(uExitIntInfo);
16812	Assert(VMX_EXIT_INT_INFO_IS_VALID(uExitIntInfo));
16813
16814	switch (uExitIntType)
16815	{
16816	/*
16817	* Physical NMIs:
16818	* We shouldn't direct host physical NMIs to the nested-guest. Dispatch it to the host.
16819	*/
16820	case VMX_EXIT_INT_INFO_TYPE_NMI:
16821	return hmR0VmxExitHostNmi(pVCpu, pVmxTransient->pVmcsInfo);
16822
16823	/*
16824	* Hardware exceptions,
16825	* Software exceptions,
16826	* Privileged software exceptions:
16827	* Figure out if the exception must be delivered to the guest or the nested-guest.
16828	*/
16829	case VMX_EXIT_INT_INFO_TYPE_SW_XCPT:
16830	case VMX_EXIT_INT_INFO_TYPE_PRIV_SW_XCPT:
16831	case VMX_EXIT_INT_INFO_TYPE_HW_XCPT:
16832	{
16833	hmR0VmxReadExitIntErrorCodeVmcs(pVmxTransient);
16834	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16835	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
16836	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
16837
16838	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
16839	bool const fIntercept = CPUMIsGuestVmxXcptInterceptSet(pCtx, VMX_EXIT_INT_INFO_VECTOR(uExitIntInfo),
16840	pVmxTransient->uExitIntErrorCode);
16841	if (fIntercept)
16842	{
16843	/* Exit qualification is required for debug and page-fault exceptions. */
16844	hmR0VmxReadExitQualVmcs(pVmxTransient);
16845
16846	/*
16847	* For VM-exits due to software exceptions (those generated by INT3 or INTO) and privileged
16848	* software exceptions (those generated by INT1/ICEBP) we need to supply the VM-exit instruction
16849	* length. However, if delivery of a software interrupt, software exception or privileged
16850	* software exception causes a VM-exit, that too provides the VM-exit instruction length.
16851	*/
16852	VMXVEXITINFO ExitInfo;
16853	RT_ZERO(ExitInfo);
16854	ExitInfo.uReason = pVmxTransient->uExitReason;
16855	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16856	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16857
16858	VMXVEXITEVENTINFO ExitEventInfo;
16859	RT_ZERO(ExitEventInfo);
16860	ExitEventInfo.uExitIntInfo = pVmxTransient->uExitIntInfo;
16861	ExitEventInfo.uExitIntErrCode = pVmxTransient->uExitIntErrorCode;
16862	ExitEventInfo.uIdtVectoringInfo = pVmxTransient->uIdtVectoringInfo;
16863	ExitEventInfo.uIdtVectoringErrCode = pVmxTransient->uIdtVectoringErrorCode;
16864
16865	#ifdef DEBUG_ramshankar
16866	hmR0VmxImportGuestState(pVCpu, pVmxTransient->pVmcsInfo, HMVMX_CPUMCTX_EXTRN_ALL);
16867	Log4Func(("exit_int_info=%#RX32 err_code=%#RX32 exit_qual=%#RX64\n", pVmxTransient->uExitIntInfo,
16868	pVmxTransient->uExitIntErrorCode, pVmxTransient->uExitQual));
16869	if (VMX_IDT_VECTORING_INFO_IS_VALID(pVmxTransient->uIdtVectoringInfo))
16870	{
16871	Log4Func(("idt_info=%#RX32 idt_errcode=%#RX32 cr2=%#RX64\n", pVmxTransient->uIdtVectoringInfo,
16872	pVmxTransient->uIdtVectoringErrorCode, pCtx->cr2));
16873	}
16874	#endif
16875	return IEMExecVmxVmexitXcpt(pVCpu, &ExitInfo, &ExitEventInfo);
16876	}
16877
16878	/* Nested paging is currently a requirement, otherwise we would need to handle shadow #PFs in hmR0VmxExitXcptPF. */
16879	Assert(pVCpu->CTX_SUFF(pVM)->hmr0.s.fNestedPaging);
16880	return hmR0VmxExitXcpt(pVCpu, pVmxTransient);
16881	}
16882
16883	/*
16884	* Software interrupts:
16885	* VM-exits cannot be caused by software interrupts.
16886	*
16887	* External interrupts:
16888	* This should only happen when "acknowledge external interrupts on VM-exit"
16889	* control is set. However, we never set this when executing a guest or
16890	* nested-guest. For nested-guests it is emulated while injecting interrupts into
16891	* the guest.
16892	*/
16893	case VMX_EXIT_INT_INFO_TYPE_SW_INT:
16894	case VMX_EXIT_INT_INFO_TYPE_EXT_INT:
16895	default:
16896	{
16897	pVCpu->hm.s.u32HMError = pVmxTransient->uExitIntInfo;
16898	return VERR_VMX_UNEXPECTED_INTERRUPTION_EXIT_TYPE;
16899	}
16900	}
16901	}
16902
16903
16904	/**
16905	* Nested-guest VM-exit handler for triple faults (VMX_EXIT_TRIPLE_FAULT).
16906	* Unconditional VM-exit.
16907	*/
16908	HMVMX_EXIT_DECL hmR0VmxExitTripleFaultNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16909	{
16910	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16911	return IEMExecVmxVmexitTripleFault(pVCpu);
16912	}
16913
16914
16915	/**
16916	* Nested-guest VM-exit handler for interrupt-window exiting (VMX_EXIT_INT_WINDOW).
16917	*/
16918	HMVMX_EXIT_NSRC_DECL hmR0VmxExitIntWindowNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16919	{
16920	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16921
16922	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_INT_WINDOW_EXIT))
16923	return IEMExecVmxVmexit(pVCpu, pVmxTransient->uExitReason, 0 /* uExitQual */);
16924	return hmR0VmxExitIntWindow(pVCpu, pVmxTransient);
16925	}
16926
16927
16928	/**
16929	* Nested-guest VM-exit handler for NMI-window exiting (VMX_EXIT_NMI_WINDOW).
16930	*/
16931	HMVMX_EXIT_NSRC_DECL hmR0VmxExitNmiWindowNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16932	{
16933	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16934
16935	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_NMI_WINDOW_EXIT))
16936	return IEMExecVmxVmexit(pVCpu, pVmxTransient->uExitReason, 0 /* uExitQual */);
16937	return hmR0VmxExitIntWindow(pVCpu, pVmxTransient);
16938	}
16939
16940
16941	/**
16942	* Nested-guest VM-exit handler for task switches (VMX_EXIT_TASK_SWITCH).
16943	* Unconditional VM-exit.
16944	*/
16945	HMVMX_EXIT_DECL hmR0VmxExitTaskSwitchNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16946	{
16947	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16948
16949	hmR0VmxReadExitQualVmcs(pVmxTransient);
16950	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16951	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
16952	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
16953
16954	VMXVEXITINFO ExitInfo;
16955	RT_ZERO(ExitInfo);
16956	ExitInfo.uReason = pVmxTransient->uExitReason;
16957	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
16958	ExitInfo.u64Qual = pVmxTransient->uExitQual;
16959
16960	VMXVEXITEVENTINFO ExitEventInfo;
16961	RT_ZERO(ExitEventInfo);
16962	ExitEventInfo.uIdtVectoringInfo = pVmxTransient->uIdtVectoringInfo;
16963	ExitEventInfo.uIdtVectoringErrCode = pVmxTransient->uIdtVectoringErrorCode;
16964	return IEMExecVmxVmexitTaskSwitch(pVCpu, &ExitInfo, &ExitEventInfo);
16965	}
16966
16967
16968	/**
16969	* Nested-guest VM-exit handler for HLT (VMX_EXIT_HLT). Conditional VM-exit.
16970	*/
16971	HMVMX_EXIT_DECL hmR0VmxExitHltNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16972	{
16973	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16974
16975	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_HLT_EXIT))
16976	{
16977	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16978	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
16979	}
16980	return hmR0VmxExitHlt(pVCpu, pVmxTransient);
16981	}
16982
16983
16984	/**
16985	* Nested-guest VM-exit handler for INVLPG (VMX_EXIT_INVLPG). Conditional VM-exit.
16986	*/
16987	HMVMX_EXIT_DECL hmR0VmxExitInvlpgNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
16988	{
16989	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
16990
16991	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_INVLPG_EXIT))
16992	{
16993	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
16994	hmR0VmxReadExitQualVmcs(pVmxTransient);
16995
16996	VMXVEXITINFO ExitInfo;
16997	RT_ZERO(ExitInfo);
16998	ExitInfo.uReason = pVmxTransient->uExitReason;
16999	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17000	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17001	return IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17002	}
17003	return hmR0VmxExitInvlpg(pVCpu, pVmxTransient);
17004	}
17005
17006
17007	/**
17008	* Nested-guest VM-exit handler for RDPMC (VMX_EXIT_RDPMC). Conditional VM-exit.
17009	*/
17010	HMVMX_EXIT_DECL hmR0VmxExitRdpmcNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17011	{
17012	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17013
17014	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_RDPMC_EXIT))
17015	{
17016	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17017	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17018	}
17019	return hmR0VmxExitRdpmc(pVCpu, pVmxTransient);
17020	}
17021
17022
17023	/**
17024	* Nested-guest VM-exit handler for VMREAD (VMX_EXIT_VMREAD) and VMWRITE
17025	* (VMX_EXIT_VMWRITE). Conditional VM-exit.
17026	*/
17027	HMVMX_EXIT_DECL hmR0VmxExitVmreadVmwriteNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17028	{
17029	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17030
17031	Assert( pVmxTransient->uExitReason == VMX_EXIT_VMREAD
17032	\|\| pVmxTransient->uExitReason == VMX_EXIT_VMWRITE);
17033
17034	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
17035
17036	uint8_t const iGReg = pVmxTransient->ExitInstrInfo.VmreadVmwrite.iReg2;
17037	Assert(iGReg < RT_ELEMENTS(pVCpu->cpum.GstCtx.aGRegs));
17038	uint64_t u64VmcsField = pVCpu->cpum.GstCtx.aGRegs[iGReg].u64;
17039
17040	HMVMX_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_EFER);
17041	if (!CPUMIsGuestInLongModeEx(&pVCpu->cpum.GstCtx))
17042	u64VmcsField &= UINT64_C(0xffffffff);
17043
17044	if (CPUMIsGuestVmxVmreadVmwriteInterceptSet(pVCpu, pVmxTransient->uExitReason, u64VmcsField))
17045	{
17046	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17047	hmR0VmxReadExitQualVmcs(pVmxTransient);
17048
17049	VMXVEXITINFO ExitInfo;
17050	RT_ZERO(ExitInfo);
17051	ExitInfo.uReason = pVmxTransient->uExitReason;
17052	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17053	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17054	ExitInfo.InstrInfo = pVmxTransient->ExitInstrInfo;
17055	return IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17056	}
17057
17058	if (pVmxTransient->uExitReason == VMX_EXIT_VMREAD)
17059	return hmR0VmxExitVmread(pVCpu, pVmxTransient);
17060	return hmR0VmxExitVmwrite(pVCpu, pVmxTransient);
17061	}
17062
17063
17064	/**
17065	* Nested-guest VM-exit handler for RDTSC (VMX_EXIT_RDTSC). Conditional VM-exit.
17066	*/
17067	HMVMX_EXIT_DECL hmR0VmxExitRdtscNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17068	{
17069	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17070
17071	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_RDTSC_EXIT))
17072	{
17073	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17074	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17075	}
17076
17077	return hmR0VmxExitRdtsc(pVCpu, pVmxTransient);
17078	}
17079
17080
17081	/**
17082	* Nested-guest VM-exit handler for control-register accesses (VMX_EXIT_MOV_CRX).
17083	* Conditional VM-exit.
17084	*/
17085	HMVMX_EXIT_DECL hmR0VmxExitMovCRxNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17086	{
17087	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17088
17089	hmR0VmxReadExitQualVmcs(pVmxTransient);
17090	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17091
17092	VBOXSTRICTRC rcStrict;
17093	uint32_t const uAccessType = VMX_EXIT_QUAL_CRX_ACCESS(pVmxTransient->uExitQual);
17094	switch (uAccessType)
17095	{
17096	case VMX_EXIT_QUAL_CRX_ACCESS_WRITE:
17097	{
17098	uint8_t const iCrReg = VMX_EXIT_QUAL_CRX_REGISTER(pVmxTransient->uExitQual);
17099	uint8_t const iGReg = VMX_EXIT_QUAL_CRX_GENREG(pVmxTransient->uExitQual);
17100	Assert(iGReg < RT_ELEMENTS(pVCpu->cpum.GstCtx.aGRegs));
17101	uint64_t const uNewCrX = pVCpu->cpum.GstCtx.aGRegs[iGReg].u64;
17102
17103	bool fIntercept;
17104	switch (iCrReg)
17105	{
17106	case 0:
17107	case 4:
17108	fIntercept = CPUMIsGuestVmxMovToCr0Cr4InterceptSet(&pVCpu->cpum.GstCtx, iCrReg, uNewCrX);
17109	break;
17110
17111	case 3:
17112	fIntercept = CPUMIsGuestVmxMovToCr3InterceptSet(pVCpu, uNewCrX);
17113	break;
17114
17115	case 8:
17116	fIntercept = CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_CR8_LOAD_EXIT);
17117	break;
17118
17119	default:
17120	fIntercept = false;
17121	break;
17122	}
17123	if (fIntercept)
17124	{
17125	VMXVEXITINFO ExitInfo;
17126	RT_ZERO(ExitInfo);
17127	ExitInfo.uReason = pVmxTransient->uExitReason;
17128	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17129	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17130	rcStrict = IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17131	}
17132	else
17133	rcStrict = hmR0VmxExitMovToCrX(pVCpu, pVmxTransient->pVmcsInfo, pVmxTransient->cbExitInstr, iGReg, iCrReg);
17134	break;
17135	}
17136
17137	case VMX_EXIT_QUAL_CRX_ACCESS_READ:
17138	{
17139	/*
17140	* CR0/CR4 reads do not cause VM-exits, the read-shadow is used (subject to masking).
17141	* CR2 reads do not cause a VM-exit.
17142	* CR3 reads cause a VM-exit depending on the "CR3 store exiting" control.
17143	* CR8 reads cause a VM-exit depending on the "CR8 store exiting" control.
17144	*/
17145	uint8_t const iCrReg = VMX_EXIT_QUAL_CRX_REGISTER(pVmxTransient->uExitQual);
17146	if ( iCrReg == 3
17147	\|\| iCrReg == 8)
17148	{
17149	static const uint32_t s_auCrXReadIntercepts[] = { 0, 0, 0, VMX_PROC_CTLS_CR3_STORE_EXIT, 0,
17150	0, 0, 0, VMX_PROC_CTLS_CR8_STORE_EXIT };
17151	uint32_t const uIntercept = s_auCrXReadIntercepts[iCrReg];
17152	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, uIntercept))
17153	{
17154	VMXVEXITINFO ExitInfo;
17155	RT_ZERO(ExitInfo);
17156	ExitInfo.uReason = pVmxTransient->uExitReason;
17157	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17158	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17159	rcStrict = IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17160	}
17161	else
17162	{
17163	uint8_t const iGReg = VMX_EXIT_QUAL_CRX_GENREG(pVmxTransient->uExitQual);
17164	rcStrict = hmR0VmxExitMovFromCrX(pVCpu, pVmxTransient->pVmcsInfo, pVmxTransient->cbExitInstr, iGReg, iCrReg);
17165	}
17166	}
17167	else
17168	{
17169	AssertMsgFailed(("MOV from CR%d VM-exit must not happen\n", iCrReg));
17170	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, iCrReg);
17171	}
17172	break;
17173	}
17174
17175	case VMX_EXIT_QUAL_CRX_ACCESS_CLTS:
17176	{
17177	PCVMXVVMCS pVmcsNstGst = pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pVmcs);
17178	Assert(pVmcsNstGst);
17179	uint64_t const uGstHostMask = pVmcsNstGst->u64Cr0Mask.u;
17180	uint64_t const uReadShadow = pVmcsNstGst->u64Cr0ReadShadow.u;
17181	if ( (uGstHostMask & X86_CR0_TS)
17182	&& (uReadShadow & X86_CR0_TS))
17183	{
17184	VMXVEXITINFO ExitInfo;
17185	RT_ZERO(ExitInfo);
17186	ExitInfo.uReason = pVmxTransient->uExitReason;
17187	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17188	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17189	rcStrict = IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17190	}
17191	else
17192	rcStrict = hmR0VmxExitClts(pVCpu, pVmxTransient->pVmcsInfo, pVmxTransient->cbExitInstr);
17193	break;
17194	}
17195
17196	case VMX_EXIT_QUAL_CRX_ACCESS_LMSW: /* LMSW (Load Machine-Status Word into CR0) */
17197	{
17198	RTGCPTR GCPtrEffDst;
17199	uint16_t const uNewMsw = VMX_EXIT_QUAL_CRX_LMSW_DATA(pVmxTransient->uExitQual);
17200	bool const fMemOperand = VMX_EXIT_QUAL_CRX_LMSW_OP_MEM(pVmxTransient->uExitQual);
17201	if (fMemOperand)
17202	{
17203	hmR0VmxReadGuestLinearAddrVmcs(pVmxTransient);
17204	GCPtrEffDst = pVmxTransient->uGuestLinearAddr;
17205	}
17206	else
17207	GCPtrEffDst = NIL_RTGCPTR;
17208
17209	if (CPUMIsGuestVmxLmswInterceptSet(&pVCpu->cpum.GstCtx, uNewMsw))
17210	{
17211	VMXVEXITINFO ExitInfo;
17212	RT_ZERO(ExitInfo);
17213	ExitInfo.uReason = pVmxTransient->uExitReason;
17214	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17215	ExitInfo.u64GuestLinearAddr = GCPtrEffDst;
17216	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17217	rcStrict = IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17218	}
17219	else
17220	rcStrict = hmR0VmxExitLmsw(pVCpu, pVmxTransient->pVmcsInfo, pVmxTransient->cbExitInstr, uNewMsw, GCPtrEffDst);
17221	break;
17222	}
17223
17224	default:
17225	{
17226	AssertMsgFailed(("Unrecognized Mov CRX access type %#x\n", uAccessType));
17227	HMVMX_UNEXPECTED_EXIT_RET(pVCpu, uAccessType);
17228	}
17229	}
17230
17231	if (rcStrict == VINF_IEM_RAISED_XCPT)
17232	{
17233	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_RAISED_XCPT_MASK);
17234	rcStrict = VINF_SUCCESS;
17235	}
17236	return rcStrict;
17237	}
17238
17239
17240	/**
17241	* Nested-guest VM-exit handler for debug-register accesses (VMX_EXIT_MOV_DRX).
17242	* Conditional VM-exit.
17243	*/
17244	HMVMX_EXIT_DECL hmR0VmxExitMovDRxNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17245	{
17246	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17247
17248	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_MOV_DR_EXIT))
17249	{
17250	hmR0VmxReadExitQualVmcs(pVmxTransient);
17251	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17252
17253	VMXVEXITINFO ExitInfo;
17254	RT_ZERO(ExitInfo);
17255	ExitInfo.uReason = pVmxTransient->uExitReason;
17256	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17257	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17258	return IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17259	}
17260	return hmR0VmxExitMovDRx(pVCpu, pVmxTransient);
17261	}
17262
17263
17264	/**
17265	* Nested-guest VM-exit handler for I/O instructions (VMX_EXIT_IO_INSTR).
17266	* Conditional VM-exit.
17267	*/
17268	HMVMX_EXIT_DECL hmR0VmxExitIoInstrNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17269	{
17270	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17271
17272	hmR0VmxReadExitQualVmcs(pVmxTransient);
17273
17274	uint32_t const uIOPort = VMX_EXIT_QUAL_IO_PORT(pVmxTransient->uExitQual);
17275	uint8_t const uIOSize = VMX_EXIT_QUAL_IO_SIZE(pVmxTransient->uExitQual);
17276	AssertReturn(uIOSize <= 3 && uIOSize != 2, VERR_VMX_IPE_1);
17277
17278	static uint32_t const s_aIOSizes[4] = { 1, 2, 0, 4 }; /* Size of the I/O accesses in bytes. */
17279	uint8_t const cbAccess = s_aIOSizes[uIOSize];
17280	if (CPUMIsGuestVmxIoInterceptSet(pVCpu, uIOPort, cbAccess))
17281	{
17282	/*
17283	* IN/OUT instruction:
17284	* - Provides VM-exit instruction length.
17285	*
17286	* INS/OUTS instruction:
17287	* - Provides VM-exit instruction length.
17288	* - Provides Guest-linear address.
17289	* - Optionally provides VM-exit instruction info (depends on CPU feature).
17290	*/
17291	PVMCC pVM = pVCpu->CTX_SUFF(pVM);
17292	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17293
17294	/* Make sure we don't use stale/uninitialized VMX-transient info. below. */
17295	pVmxTransient->ExitInstrInfo.u = 0;
17296	pVmxTransient->uGuestLinearAddr = 0;
17297
17298	bool const fVmxInsOutsInfo = pVM->cpum.ro.GuestFeatures.fVmxInsOutInfo;
17299	bool const fIOString = VMX_EXIT_QUAL_IO_IS_STRING(pVmxTransient->uExitQual);
17300	if (fIOString)
17301	{
17302	hmR0VmxReadGuestLinearAddrVmcs(pVmxTransient);
17303	if (fVmxInsOutsInfo)
17304	{
17305	Assert(RT_BF_GET(g_HmMsrs.u.vmx.u64Basic, VMX_BF_BASIC_VMCS_INS_OUTS)); /* Paranoia. */
17306	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
17307	}
17308	}
17309
17310	VMXVEXITINFO ExitInfo;
17311	RT_ZERO(ExitInfo);
17312	ExitInfo.uReason = pVmxTransient->uExitReason;
17313	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17314	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17315	ExitInfo.InstrInfo = pVmxTransient->ExitInstrInfo;
17316	ExitInfo.u64GuestLinearAddr = pVmxTransient->uGuestLinearAddr;
17317	return IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17318	}
17319	return hmR0VmxExitIoInstr(pVCpu, pVmxTransient);
17320	}
17321
17322
17323	/**
17324	* Nested-guest VM-exit handler for RDMSR (VMX_EXIT_RDMSR).
17325	*/
17326	HMVMX_EXIT_DECL hmR0VmxExitRdmsrNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17327	{
17328	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17329
17330	uint32_t fMsrpm;
17331	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_USE_MSR_BITMAPS))
17332	fMsrpm = CPUMGetVmxMsrPermission(pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pvMsrBitmap), pVCpu->cpum.GstCtx.ecx);
17333	else
17334	fMsrpm = VMXMSRPM_EXIT_RD;
17335
17336	if (fMsrpm & VMXMSRPM_EXIT_RD)
17337	{
17338	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17339	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17340	}
17341	return hmR0VmxExitRdmsr(pVCpu, pVmxTransient);
17342	}
17343
17344
17345	/**
17346	* Nested-guest VM-exit handler for WRMSR (VMX_EXIT_WRMSR).
17347	*/
17348	HMVMX_EXIT_DECL hmR0VmxExitWrmsrNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17349	{
17350	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17351
17352	uint32_t fMsrpm;
17353	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_USE_MSR_BITMAPS))
17354	fMsrpm = CPUMGetVmxMsrPermission(pVCpu->cpum.GstCtx.hwvirt.vmx.CTX_SUFF(pvMsrBitmap), pVCpu->cpum.GstCtx.ecx);
17355	else
17356	fMsrpm = VMXMSRPM_EXIT_WR;
17357
17358	if (fMsrpm & VMXMSRPM_EXIT_WR)
17359	{
17360	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17361	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17362	}
17363	return hmR0VmxExitWrmsr(pVCpu, pVmxTransient);
17364	}
17365
17366
17367	/**
17368	* Nested-guest VM-exit handler for MWAIT (VMX_EXIT_MWAIT). Conditional VM-exit.
17369	*/
17370	HMVMX_EXIT_DECL hmR0VmxExitMwaitNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17371	{
17372	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17373
17374	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_MWAIT_EXIT))
17375	{
17376	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17377	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17378	}
17379	return hmR0VmxExitMwait(pVCpu, pVmxTransient);
17380	}
17381
17382
17383	/**
17384	* Nested-guest VM-exit handler for monitor-trap-flag (VMX_EXIT_MTF). Conditional
17385	* VM-exit.
17386	*/
17387	HMVMX_EXIT_DECL hmR0VmxExitMtfNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17388	{
17389	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17390
17391	/** @todo NSTVMX: Should consider debugging nested-guests using VM debugger. */
17392	hmR0VmxReadGuestPendingDbgXctps(pVmxTransient);
17393	VMXVEXITINFO ExitInfo;
17394	RT_ZERO(ExitInfo);
17395	ExitInfo.uReason = pVmxTransient->uExitReason;
17396	ExitInfo.u64GuestPendingDbgXcpts = pVmxTransient->uGuestPendingDbgXcpts;
17397	return IEMExecVmxVmexitTrapLike(pVCpu, &ExitInfo);
17398	}
17399
17400
17401	/**
17402	* Nested-guest VM-exit handler for MONITOR (VMX_EXIT_MONITOR). Conditional VM-exit.
17403	*/
17404	HMVMX_EXIT_DECL hmR0VmxExitMonitorNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17405	{
17406	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17407
17408	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_MONITOR_EXIT))
17409	{
17410	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17411	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17412	}
17413	return hmR0VmxExitMonitor(pVCpu, pVmxTransient);
17414	}
17415
17416
17417	/**
17418	* Nested-guest VM-exit handler for PAUSE (VMX_EXIT_PAUSE). Conditional VM-exit.
17419	*/
17420	HMVMX_EXIT_DECL hmR0VmxExitPauseNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17421	{
17422	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17423
17424	/** @todo NSTVMX: Think about this more. Does the outer guest need to intercept
17425	* PAUSE when executing a nested-guest? If it does not, we would not need
17426	* to check for the intercepts here. Just call VM-exit... */
17427
17428	/* The CPU would have already performed the necessary CPL checks for PAUSE-loop exiting. */
17429	if ( CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_PAUSE_EXIT)
17430	\|\| CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_PAUSE_LOOP_EXIT))
17431	{
17432	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17433	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17434	}
17435	return hmR0VmxExitPause(pVCpu, pVmxTransient);
17436	}
17437
17438
17439	/**
17440	* Nested-guest VM-exit handler for when the TPR value is lowered below the
17441	* specified threshold (VMX_EXIT_TPR_BELOW_THRESHOLD). Conditional VM-exit.
17442	*/
17443	HMVMX_EXIT_NSRC_DECL hmR0VmxExitTprBelowThresholdNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17444	{
17445	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17446
17447	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_USE_TPR_SHADOW))
17448	{
17449	hmR0VmxReadGuestPendingDbgXctps(pVmxTransient);
17450	VMXVEXITINFO ExitInfo;
17451	RT_ZERO(ExitInfo);
17452	ExitInfo.uReason = pVmxTransient->uExitReason;
17453	ExitInfo.u64GuestPendingDbgXcpts = pVmxTransient->uGuestPendingDbgXcpts;
17454	return IEMExecVmxVmexitTrapLike(pVCpu, &ExitInfo);
17455	}
17456	return hmR0VmxExitTprBelowThreshold(pVCpu, pVmxTransient);
17457	}
17458
17459
17460	/**
17461	* Nested-guest VM-exit handler for APIC access (VMX_EXIT_APIC_ACCESS). Conditional
17462	* VM-exit.
17463	*/
17464	HMVMX_EXIT_DECL hmR0VmxExitApicAccessNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17465	{
17466	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17467
17468	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17469	hmR0VmxReadIdtVectoringInfoVmcs(pVmxTransient);
17470	hmR0VmxReadIdtVectoringErrorCodeVmcs(pVmxTransient);
17471	hmR0VmxReadExitQualVmcs(pVmxTransient);
17472
17473	Assert(CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_VIRT_APIC_ACCESS));
17474
17475	Log4Func(("at offset %#x type=%u\n", VMX_EXIT_QUAL_APIC_ACCESS_OFFSET(pVmxTransient->uExitQual),
17476	VMX_EXIT_QUAL_APIC_ACCESS_TYPE(pVmxTransient->uExitQual)));
17477
17478	VMXVEXITINFO ExitInfo;
17479	RT_ZERO(ExitInfo);
17480	ExitInfo.uReason = pVmxTransient->uExitReason;
17481	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17482	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17483
17484	VMXVEXITEVENTINFO ExitEventInfo;
17485	RT_ZERO(ExitEventInfo);
17486	ExitEventInfo.uIdtVectoringInfo = pVmxTransient->uIdtVectoringInfo;
17487	ExitEventInfo.uIdtVectoringErrCode = pVmxTransient->uIdtVectoringErrorCode;
17488	return IEMExecVmxVmexitApicAccess(pVCpu, &ExitInfo, &ExitEventInfo);
17489	}
17490
17491
17492	/**
17493	* Nested-guest VM-exit handler for APIC write emulation (VMX_EXIT_APIC_WRITE).
17494	* Conditional VM-exit.
17495	*/
17496	HMVMX_EXIT_DECL hmR0VmxExitApicWriteNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17497	{
17498	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17499
17500	Assert(CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_APIC_REG_VIRT));
17501	hmR0VmxReadExitQualVmcs(pVmxTransient);
17502	return IEMExecVmxVmexit(pVCpu, pVmxTransient->uExitReason, pVmxTransient->uExitQual);
17503	}
17504
17505
17506	/**
17507	* Nested-guest VM-exit handler for virtualized EOI (VMX_EXIT_VIRTUALIZED_EOI).
17508	* Conditional VM-exit.
17509	*/
17510	HMVMX_EXIT_DECL hmR0VmxExitVirtEoiNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17511	{
17512	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17513
17514	Assert(CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_VIRT_INT_DELIVERY));
17515	hmR0VmxReadExitQualVmcs(pVmxTransient);
17516	return IEMExecVmxVmexit(pVCpu, pVmxTransient->uExitReason, pVmxTransient->uExitQual);
17517	}
17518
17519
17520	/**
17521	* Nested-guest VM-exit handler for RDTSCP (VMX_EXIT_RDTSCP). Conditional VM-exit.
17522	*/
17523	HMVMX_EXIT_DECL hmR0VmxExitRdtscpNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17524	{
17525	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17526
17527	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_RDTSC_EXIT))
17528	{
17529	Assert(CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_RDTSCP));
17530	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17531	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17532	}
17533	return hmR0VmxExitRdtscp(pVCpu, pVmxTransient);
17534	}
17535
17536
17537	/**
17538	* Nested-guest VM-exit handler for WBINVD (VMX_EXIT_WBINVD). Conditional VM-exit.
17539	*/
17540	HMVMX_EXIT_NSRC_DECL hmR0VmxExitWbinvdNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17541	{
17542	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17543
17544	if (CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_WBINVD_EXIT))
17545	{
17546	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17547	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17548	}
17549	return hmR0VmxExitWbinvd(pVCpu, pVmxTransient);
17550	}
17551
17552
17553	/**
17554	* Nested-guest VM-exit handler for INVPCID (VMX_EXIT_INVPCID). Conditional VM-exit.
17555	*/
17556	HMVMX_EXIT_DECL hmR0VmxExitInvpcidNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17557	{
17558	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17559
17560	if (CPUMIsGuestVmxProcCtlsSet(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS_INVLPG_EXIT))
17561	{
17562	Assert(CPUMIsGuestVmxProcCtls2Set(&pVCpu->cpum.GstCtx, VMX_PROC_CTLS2_INVPCID));
17563	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17564	hmR0VmxReadExitQualVmcs(pVmxTransient);
17565	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
17566
17567	VMXVEXITINFO ExitInfo;
17568	RT_ZERO(ExitInfo);
17569	ExitInfo.uReason = pVmxTransient->uExitReason;
17570	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17571	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17572	ExitInfo.InstrInfo = pVmxTransient->ExitInstrInfo;
17573	return IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17574	}
17575	return hmR0VmxExitInvpcid(pVCpu, pVmxTransient);
17576	}
17577
17578
17579	/**
17580	* Nested-guest VM-exit handler for invalid-guest state
17581	* (VMX_EXIT_ERR_INVALID_GUEST_STATE). Error VM-exit.
17582	*/
17583	HMVMX_EXIT_DECL hmR0VmxExitErrInvalidGuestStateNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17584	{
17585	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17586
17587	/*
17588	* Currently this should never happen because we fully emulate VMLAUNCH/VMRESUME in IEM.
17589	* So if it does happen, it indicates a bug possibly in the hardware-assisted VMX code.
17590	* Handle it like it's in an invalid guest state of the outer guest.
17591	*
17592	* When the fast path is implemented, this should be changed to cause the corresponding
17593	* nested-guest VM-exit.
17594	*/
17595	return hmR0VmxExitErrInvalidGuestState(pVCpu, pVmxTransient);
17596	}
17597
17598
17599	/**
17600	* Nested-guest VM-exit handler for instructions that cause VM-exits uncondtionally
17601	* and only provide the instruction length.
17602	*
17603	* Unconditional VM-exit.
17604	*/
17605	HMVMX_EXIT_DECL hmR0VmxExitInstrNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17606	{
17607	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17608
17609	#ifdef VBOX_STRICT
17610	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
17611	switch (pVmxTransient->uExitReason)
17612	{
17613	case VMX_EXIT_ENCLS:
17614	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_ENCLS_EXIT));
17615	break;
17616
17617	case VMX_EXIT_VMFUNC:
17618	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_VMFUNC));
17619	break;
17620	}
17621	#endif
17622
17623	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17624	return IEMExecVmxVmexitInstr(pVCpu, pVmxTransient->uExitReason, pVmxTransient->cbExitInstr);
17625	}
17626
17627
17628	/**
17629	* Nested-guest VM-exit handler for instructions that provide instruction length as
17630	* well as more information.
17631	*
17632	* Unconditional VM-exit.
17633	*/
17634	HMVMX_EXIT_DECL hmR0VmxExitInstrWithInfoNested(PVMCPUCC pVCpu, PVMXTRANSIENT pVmxTransient)
17635	{
17636	HMVMX_VALIDATE_NESTED_EXIT_HANDLER_PARAMS(pVCpu, pVmxTransient);
17637
17638	#ifdef VBOX_STRICT
17639	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
17640	switch (pVmxTransient->uExitReason)
17641	{
17642	case VMX_EXIT_GDTR_IDTR_ACCESS:
17643	case VMX_EXIT_LDTR_TR_ACCESS:
17644	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_DESC_TABLE_EXIT));
17645	break;
17646
17647	case VMX_EXIT_RDRAND:
17648	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_RDRAND_EXIT));
17649	break;
17650
17651	case VMX_EXIT_RDSEED:
17652	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_RDSEED_EXIT));
17653	break;
17654
17655	case VMX_EXIT_XSAVES:
17656	case VMX_EXIT_XRSTORS:
17657	/** @todo NSTVMX: Verify XSS-bitmap. */
17658	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_XSAVES_XRSTORS));
17659	break;
17660
17661	case VMX_EXIT_UMWAIT:
17662	case VMX_EXIT_TPAUSE:
17663	Assert(CPUMIsGuestVmxProcCtlsSet(pCtx, VMX_PROC_CTLS_RDTSC_EXIT));
17664	Assert(CPUMIsGuestVmxProcCtls2Set(pCtx, VMX_PROC_CTLS2_USER_WAIT_PAUSE));
17665	break;
17666
17667	case VMX_EXIT_LOADIWKEY:
17668	Assert(CPUMIsGuestVmxProcCtls3Set(pCtx, VMX_PROC_CTLS3_LOADIWKEY_EXIT));
17669	break;
17670	}
17671	#endif
17672
17673	hmR0VmxReadExitInstrLenVmcs(pVmxTransient);
17674	hmR0VmxReadExitQualVmcs(pVmxTransient);
17675	hmR0VmxReadExitInstrInfoVmcs(pVmxTransient);
17676
17677	VMXVEXITINFO ExitInfo;
17678	RT_ZERO(ExitInfo);
17679	ExitInfo.uReason = pVmxTransient->uExitReason;
17680	ExitInfo.cbInstr = pVmxTransient->cbExitInstr;
17681	ExitInfo.u64Qual = pVmxTransient->uExitQual;
17682	ExitInfo.InstrInfo = pVmxTransient->ExitInstrInfo;
17683	return IEMExecVmxVmexitInstrWithInfo(pVCpu, &ExitInfo);
17684	}
17685
17686	/** @} */
17687	#endif /* VBOX_WITH_NESTED_HWVIRT_VMX */
17688

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source: vbox/trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp@ 91037

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