HMSVMR0.cpp@ 72969

Last change on this file since 72969 was 72969, checked in by vboxsync, 6 years ago
VMM/HMSVM: bugref:9193 Stop passing pCtx around and use pVCpu->cpum.GstCtx instead where possible. [build fix]
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1	/* $Id: HMSVMR0.cpp 72969 2018-07-08 10:45:34Z vboxsync $ */
2	/** @file
3	* HM SVM (AMD-V) - Host Context Ring-0.
4	*/
5
6	/*
7	* Copyright (C) 2013-2017 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/asm-amd64-x86.h>
25	#include <iprt/thread.h>
26
27	#include <VBox/vmm/pdmapi.h>
28	#include <VBox/vmm/dbgf.h>
29	#include <VBox/vmm/iem.h>
30	#include <VBox/vmm/iom.h>
31	#include <VBox/vmm/tm.h>
32	#include <VBox/vmm/gim.h>
33	#include <VBox/vmm/apic.h>
34	#include "HMInternal.h"
35	#include <VBox/vmm/vm.h>
36	#include "HMSVMR0.h"
37	#include "dtrace/VBoxVMM.h"
38
39	#ifdef DEBUG_ramshankar
40	# define HMSVM_SYNC_FULL_GUEST_STATE
41	# define HMSVM_ALWAYS_TRAP_ALL_XCPTS
42	# define HMSVM_ALWAYS_TRAP_PF
43	# define HMSVM_ALWAYS_TRAP_TASK_SWITCH
44	#endif
45
46
47	/*********************************************************************************************************************************
48	* Defined Constants And Macros *
49	*********************************************************************************************************************************/
50	#ifdef VBOX_WITH_STATISTICS
51	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
52	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
53	if ((u64ExitCode) == SVM_EXIT_NPF) \
54	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf); \
55	else \
56	STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
57	} while (0)
58
59	# ifdef VBOX_WITH_NESTED_HWVIRT_SVM
60	# define HMSVM_NESTED_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
61	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
62	if ((u64ExitCode) == SVM_EXIT_NPF) \
63	STAM_COUNTER_INC(&pVCpu->hm.s.StatNestedExitReasonNpf); \
64	else \
65	STAM_COUNTER_INC(&pVCpu->hm.s.paStatNestedExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
66	} while (0)
67	# endif
68	#else
69	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
70	# ifdef VBOX_WITH_NESTED_HWVIRT_SVM
71	# define HMSVM_NESTED_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
72	# endif
73	#endif /* !VBOX_WITH_STATISTICS */
74
75	/** If we decide to use a function table approach this can be useful to
76	* switch to a "static DECLCALLBACK(int)". */
77	#define HMSVM_EXIT_DECL static int
78
79	/**
80	* Subset of the guest-CPU state that is kept by SVM R0 code while executing the
81	* guest using hardware-assisted SVM.
82	*
83	* This excludes state like TSC AUX, GPRs (other than RSP, RAX) which are always
84	* are swapped and restored across the world-switch and also registers like
85	* EFER, PAT MSR etc. which cannot be modified by the guest without causing a
86	* \#VMEXIT.
87	*/
88	#define HMSVM_CPUMCTX_EXTRN_ALL ( CPUMCTX_EXTRN_RIP \
89	\| CPUMCTX_EXTRN_RFLAGS \
90	\| CPUMCTX_EXTRN_RAX \
91	\| CPUMCTX_EXTRN_RSP \
92	\| CPUMCTX_EXTRN_SREG_MASK \
93	\| CPUMCTX_EXTRN_CR0 \
94	\| CPUMCTX_EXTRN_CR2 \
95	\| CPUMCTX_EXTRN_CR3 \
96	\| CPUMCTX_EXTRN_TABLE_MASK \
97	\| CPUMCTX_EXTRN_DR6 \
98	\| CPUMCTX_EXTRN_DR7 \
99	\| CPUMCTX_EXTRN_KERNEL_GS_BASE \
100	\| CPUMCTX_EXTRN_SYSCALL_MSRS \
101	\| CPUMCTX_EXTRN_SYSENTER_MSRS \
102	\| CPUMCTX_EXTRN_HWVIRT \
103	\| CPUMCTX_EXTRN_HM_SVM_MASK)
104
105	/**
106	* Subset of the guest-CPU state that is shared between the guest and host.
107	*/
108	#define HMSVM_CPUMCTX_SHARED_STATE CPUMCTX_EXTRN_DR_MASK
109
110	/** Macro for importing guest state from the VMCB back into CPUMCTX. */
111	#define HMSVM_CPUMCTX_IMPORT_STATE(a_pVCpu, a_fWhat) \
112	do { \
113	if ((a_pVCpu)->cpum.GstCtx.fExtrn & (a_fWhat)) \
114	hmR0SvmImportGuestState((a_pVCpu), (a_fWhat)); \
115	} while (0)
116
117	/** Assert that the required state bits are fetched. */
118	#define HMSVM_CPUMCTX_ASSERT(a_pVCpu, a_fExtrnMbz) AssertMsg(!((a_pVCpu)->cpum.GstCtx.fExtrn & (a_fExtrnMbz)), \
119	("fExtrn=%#RX64 fExtrnMbz=%#RX64\n", \
120	(a_pVCpu)->cpum.GstCtx.fExtrn, (a_fExtrnMbz)))
121
122	/** Assert that preemption is disabled or covered by thread-context hooks. */
123	#define HMSVM_ASSERT_PREEMPT_SAFE(a_pVCpu) Assert( VMMR0ThreadCtxHookIsEnabled((a_pVCpu)) \
124	\|\| !RTThreadPreemptIsEnabled(NIL_RTTHREAD));
125
126	/** Assert that we haven't migrated CPUs when thread-context hooks are not
127	* used. */
128	#define HMSVM_ASSERT_CPU_SAFE(a_pVCpu) AssertMsg( VMMR0ThreadCtxHookIsEnabled((a_pVCpu)) \
129	\|\| (a_pVCpu)->hm.s.idEnteredCpu == RTMpCpuId(), \
130	("Illegal migration! Entered on CPU %u Current %u\n", \
131	(a_pVCpu)->hm.s.idEnteredCpu, RTMpCpuId()));
132
133	/** Assert that we're not executing a nested-guest. */
134	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
135	# define HMSVM_ASSERT_NOT_IN_NESTED_GUEST(a_pCtx) Assert(!CPUMIsGuestInSvmNestedHwVirtMode((a_pCtx)))
136	#else
137	# define HMSVM_ASSERT_NOT_IN_NESTED_GUEST(a_pCtx) do { NOREF((a_pCtx)); } while (0)
138	#endif
139
140	/** Assert that we're executing a nested-guest. */
141	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
142	# define HMSVM_ASSERT_IN_NESTED_GUEST(a_pCtx) Assert(CPUMIsGuestInSvmNestedHwVirtMode((a_pCtx)))
143	#else
144	# define HMSVM_ASSERT_IN_NESTED_GUEST(a_pCtx) do { NOREF((a_pCtx)); } while (0)
145	#endif
146
147	/** Macro for checking and returning from the using function for
148	* \#VMEXIT intercepts that maybe caused during delivering of another
149	* event in the guest. */
150	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
151	# define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(a_pVCpu, a_pSvmTransient) \
152	do \
153	{ \
154	int rc = hmR0SvmCheckExitDueToEventDelivery((a_pVCpu), (a_pSvmTransient)); \
155	if (RT_LIKELY(rc == VINF_SUCCESS)) { /* continue #VMEXIT handling */ } \
156	else if ( rc == VINF_HM_DOUBLE_FAULT) { return VINF_SUCCESS; } \
157	else if ( rc == VINF_EM_RESET \
158	&& CPUMIsGuestSvmCtrlInterceptSet((a_pVCpu), &(a_pVCpu)->cpum.GstCtx, SVM_CTRL_INTERCEPT_SHUTDOWN)) \
159	{ \
160	HMSVM_CPUMCTX_IMPORT_STATE((a_pVCpu), IEM_CPUMCTX_EXTRN_SVM_VMEXIT_MASK); \
161	return VBOXSTRICTRC_TODO(IEMExecSvmVmexit((a_pVCpu), SVM_EXIT_SHUTDOWN, 0, 0)); \
162	} \
163	else \
164	return rc; \
165	} while (0)
166	#else
167	# define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(a_pVCpu, a_pSvmTransient) \
168	do \
169	{ \
170	int rc = hmR0SvmCheckExitDueToEventDelivery((a_pVCpu), (a_pSvmTransient)); \
171	if (RT_LIKELY(rc == VINF_SUCCESS)) { /* continue #VMEXIT handling */ } \
172	else if ( rc == VINF_HM_DOUBLE_FAULT) { return VINF_SUCCESS; } \
173	else \
174	return rc; \
175	} while (0)
176	#endif
177
178	/** Macro which updates interrupt shadow for the current RIP. */
179	#define HMSVM_UPDATE_INTR_SHADOW(a_pVCpu) \
180	do { \
181	/* Update interrupt shadow. */ \
182	if ( VMCPU_FF_IS_PENDING((a_pVCpu), VMCPU_FF_INHIBIT_INTERRUPTS) \
183	&& (a_pVCpu)->cpum.GstCtx.rip != EMGetInhibitInterruptsPC((a_pVCpu))) \
184	VMCPU_FF_CLEAR((a_pVCpu), VMCPU_FF_INHIBIT_INTERRUPTS); \
185	} while (0)
186
187	/** Macro for upgrading a @a a_rc to VINF_EM_DBG_STEPPED after emulating an
188	* instruction that exited. */
189	#define HMSVM_CHECK_SINGLE_STEP(a_pVCpu, a_rc) \
190	do { \
191	if ((a_pVCpu)->hm.s.fSingleInstruction && (a_rc) == VINF_SUCCESS) \
192	(a_rc) = VINF_EM_DBG_STEPPED; \
193	} while (0)
194
195	/** Validate segment descriptor granularity bit. */
196	#ifdef VBOX_STRICT
197	# define HMSVM_ASSERT_SEG_GRANULARITY(a_pCtx, reg) \
198	AssertMsg( !(a_pCtx)->reg.Attr.n.u1Present \
199	\|\| ( (a_pCtx)->reg.Attr.n.u1Granularity \
200	? ((a_pCtx)->reg.u32Limit & 0xfff) == 0xfff \
201	: (a_pCtx)->reg.u32Limit <= UINT32_C(0xfffff)), \
202	("Invalid Segment Attributes Limit=%#RX32 Attr=%#RX32 Base=%#RX64\n", (a_pCtx)->reg.u32Limit, \
203	(a_pCtx)->reg.Attr.u, (a_pCtx)->reg.u64Base))
204	#else
205	# define HMSVM_ASSERT_SEG_GRANULARITY(a_pCtx, reg) do { } while (0)
206	#endif
207
208	/**
209	* Exception bitmap mask for all contributory exceptions.
210	*
211	* Page fault is deliberately excluded here as it's conditional as to whether
212	* it's contributory or benign. Page faults are handled separately.
213	*/
214	#define HMSVM_CONTRIBUTORY_XCPT_MASK ( RT_BIT(X86_XCPT_GP) \| RT_BIT(X86_XCPT_NP) \| RT_BIT(X86_XCPT_SS) \| RT_BIT(X86_XCPT_TS) \
215	\| RT_BIT(X86_XCPT_DE))
216
217	/**
218	* Mandatory/unconditional guest control intercepts.
219	*
220	* SMIs can and do happen in normal operation. We need not intercept them
221	* while executing the guest (or nested-guest).
222	*/
223	#define HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS ( SVM_CTRL_INTERCEPT_INTR \
224	\| SVM_CTRL_INTERCEPT_NMI \
225	\| SVM_CTRL_INTERCEPT_INIT \
226	\| SVM_CTRL_INTERCEPT_RDPMC \
227	\| SVM_CTRL_INTERCEPT_CPUID \
228	\| SVM_CTRL_INTERCEPT_RSM \
229	\| SVM_CTRL_INTERCEPT_HLT \
230	\| SVM_CTRL_INTERCEPT_IOIO_PROT \
231	\| SVM_CTRL_INTERCEPT_MSR_PROT \
232	\| SVM_CTRL_INTERCEPT_INVLPGA \
233	\| SVM_CTRL_INTERCEPT_SHUTDOWN \
234	\| SVM_CTRL_INTERCEPT_FERR_FREEZE \
235	\| SVM_CTRL_INTERCEPT_VMRUN \
236	\| SVM_CTRL_INTERCEPT_SKINIT \
237	\| SVM_CTRL_INTERCEPT_WBINVD \
238	\| SVM_CTRL_INTERCEPT_MONITOR \
239	\| SVM_CTRL_INTERCEPT_MWAIT \
240	\| SVM_CTRL_INTERCEPT_CR0_SEL_WRITE \
241	\| SVM_CTRL_INTERCEPT_XSETBV)
242
243	/** @name VMCB Clean Bits.
244	*
245	* These flags are used for VMCB-state caching. A set VMCB Clean bit indicates
246	* AMD-V doesn't need to reload the corresponding value(s) from the VMCB in
247	* memory.
248	*
249	* @{ */
250	/** All intercepts vectors, TSC offset, PAUSE filter counter. */
251	#define HMSVM_VMCB_CLEAN_INTERCEPTS RT_BIT(0)
252	/** I/O permission bitmap, MSR permission bitmap. */
253	#define HMSVM_VMCB_CLEAN_IOPM_MSRPM RT_BIT(1)
254	/** ASID. */
255	#define HMSVM_VMCB_CLEAN_ASID RT_BIT(2)
256	/** TRP: V_TPR, V_IRQ, V_INTR_PRIO, V_IGN_TPR, V_INTR_MASKING,
257	V_INTR_VECTOR. */
258	#define HMSVM_VMCB_CLEAN_INT_CTRL RT_BIT(3)
259	/** Nested Paging: Nested CR3 (nCR3), PAT. */
260	#define HMSVM_VMCB_CLEAN_NP RT_BIT(4)
261	/** Control registers (CR0, CR3, CR4, EFER). */
262	#define HMSVM_VMCB_CLEAN_CRX_EFER RT_BIT(5)
263	/** Debug registers (DR6, DR7). */
264	#define HMSVM_VMCB_CLEAN_DRX RT_BIT(6)
265	/** GDT, IDT limit and base. */
266	#define HMSVM_VMCB_CLEAN_DT RT_BIT(7)
267	/** Segment register: CS, SS, DS, ES limit and base. */
268	#define HMSVM_VMCB_CLEAN_SEG RT_BIT(8)
269	/** CR2.*/
270	#define HMSVM_VMCB_CLEAN_CR2 RT_BIT(9)
271	/** Last-branch record (DbgCtlMsr, br_from, br_to, lastint_from, lastint_to) */
272	#define HMSVM_VMCB_CLEAN_LBR RT_BIT(10)
273	/** AVIC (AVIC APIC_BAR; AVIC APIC_BACKING_PAGE, AVIC
274	PHYSICAL_TABLE and AVIC LOGICAL_TABLE Pointers). */
275	#define HMSVM_VMCB_CLEAN_AVIC RT_BIT(11)
276	/** Mask of all valid VMCB Clean bits. */
277	#define HMSVM_VMCB_CLEAN_ALL ( HMSVM_VMCB_CLEAN_INTERCEPTS \
278	\| HMSVM_VMCB_CLEAN_IOPM_MSRPM \
279	\| HMSVM_VMCB_CLEAN_ASID \
280	\| HMSVM_VMCB_CLEAN_INT_CTRL \
281	\| HMSVM_VMCB_CLEAN_NP \
282	\| HMSVM_VMCB_CLEAN_CRX_EFER \
283	\| HMSVM_VMCB_CLEAN_DRX \
284	\| HMSVM_VMCB_CLEAN_DT \
285	\| HMSVM_VMCB_CLEAN_SEG \
286	\| HMSVM_VMCB_CLEAN_CR2 \
287	\| HMSVM_VMCB_CLEAN_LBR \
288	\| HMSVM_VMCB_CLEAN_AVIC)
289	/** @} */
290
291	/** @name SVM transient.
292	*
293	* A state structure for holding miscellaneous information across AMD-V
294	* VMRUN/\#VMEXIT operation, restored after the transition.
295	*
296	* @{ */
297	typedef struct SVMTRANSIENT
298	{
299	/** The host's rflags/eflags. */
300	RTCCUINTREG fEFlags;
301	#if HC_ARCH_BITS == 32
302	uint32_t u32Alignment0;
303	#endif
304
305	/** The \#VMEXIT exit code (the EXITCODE field in the VMCB). */
306	uint64_t u64ExitCode;
307	/** The guest's TPR value used for TPR shadowing. */
308	uint8_t u8GuestTpr;
309	/** Alignment. */
310	uint8_t abAlignment0[7];
311
312	/** Pointer to the currently executing VMCB. */
313	PSVMVMCB pVmcb;
314	/** Whether we are currently executing a nested-guest. */
315	bool fIsNestedGuest;
316
317	/** Whether the guest debug state was active at the time of \#VMEXIT. */
318	bool fWasGuestDebugStateActive;
319	/** Whether the hyper debug state was active at the time of \#VMEXIT. */
320	bool fWasHyperDebugStateActive;
321	/** Whether the TSC offset mode needs to be updated. */
322	bool fUpdateTscOffsetting;
323	/** Whether the TSC_AUX MSR needs restoring on \#VMEXIT. */
324	bool fRestoreTscAuxMsr;
325	/** Whether the \#VMEXIT was caused by a page-fault during delivery of a
326	* contributary exception or a page-fault. */
327	bool fVectoringDoublePF;
328	/** Whether the \#VMEXIT was caused by a page-fault during delivery of an
329	* external interrupt or NMI. */
330	bool fVectoringPF;
331	} SVMTRANSIENT, *PSVMTRANSIENT;
332	AssertCompileMemberAlignment(SVMTRANSIENT, u64ExitCode, sizeof(uint64_t));
333	AssertCompileMemberAlignment(SVMTRANSIENT, pVmcb, sizeof(uint64_t));
334	/** @} */
335
336	/**
337	* MSRPM (MSR permission bitmap) read permissions (for guest RDMSR).
338	*/
339	typedef enum SVMMSREXITREAD
340	{
341	/** Reading this MSR causes a \#VMEXIT. */
342	SVMMSREXIT_INTERCEPT_READ = 0xb,
343	/** Reading this MSR does not cause a \#VMEXIT. */
344	SVMMSREXIT_PASSTHRU_READ
345	} SVMMSREXITREAD;
346
347	/**
348	* MSRPM (MSR permission bitmap) write permissions (for guest WRMSR).
349	*/
350	typedef enum SVMMSREXITWRITE
351	{
352	/** Writing to this MSR causes a \#VMEXIT. */
353	SVMMSREXIT_INTERCEPT_WRITE = 0xd,
354	/** Writing to this MSR does not cause a \#VMEXIT. */
355	SVMMSREXIT_PASSTHRU_WRITE
356	} SVMMSREXITWRITE;
357
358	/**
359	* SVM \#VMEXIT handler.
360	*
361	* @returns VBox status code.
362	* @param pVCpu The cross context virtual CPU structure.
363	* @param pSvmTransient Pointer to the SVM-transient structure.
364	*/
365	typedef int FNSVMEXITHANDLER(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient);
366
367
368	/*********************************************************************************************************************************
369	* Internal Functions *
370	*********************************************************************************************************************************/
371	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu);
372	static void hmR0SvmLeave(PVMCPU pVCpu, bool fImportState);
373
374
375	/** @name \#VMEXIT handlers.
376	* @{
377	*/
378	static FNSVMEXITHANDLER hmR0SvmExitIntr;
379	static FNSVMEXITHANDLER hmR0SvmExitWbinvd;
380	static FNSVMEXITHANDLER hmR0SvmExitInvd;
381	static FNSVMEXITHANDLER hmR0SvmExitCpuid;
382	static FNSVMEXITHANDLER hmR0SvmExitRdtsc;
383	static FNSVMEXITHANDLER hmR0SvmExitRdtscp;
384	static FNSVMEXITHANDLER hmR0SvmExitRdpmc;
385	static FNSVMEXITHANDLER hmR0SvmExitInvlpg;
386	static FNSVMEXITHANDLER hmR0SvmExitHlt;
387	static FNSVMEXITHANDLER hmR0SvmExitMonitor;
388	static FNSVMEXITHANDLER hmR0SvmExitMwait;
389	static FNSVMEXITHANDLER hmR0SvmExitShutdown;
390	static FNSVMEXITHANDLER hmR0SvmExitUnexpected;
391	static FNSVMEXITHANDLER hmR0SvmExitReadCRx;
392	static FNSVMEXITHANDLER hmR0SvmExitWriteCRx;
393	static FNSVMEXITHANDLER hmR0SvmExitMsr;
394	static FNSVMEXITHANDLER hmR0SvmExitReadDRx;
395	static FNSVMEXITHANDLER hmR0SvmExitWriteDRx;
396	static FNSVMEXITHANDLER hmR0SvmExitXsetbv;
397	static FNSVMEXITHANDLER hmR0SvmExitIOInstr;
398	static FNSVMEXITHANDLER hmR0SvmExitNestedPF;
399	static FNSVMEXITHANDLER hmR0SvmExitVIntr;
400	static FNSVMEXITHANDLER hmR0SvmExitTaskSwitch;
401	static FNSVMEXITHANDLER hmR0SvmExitVmmCall;
402	static FNSVMEXITHANDLER hmR0SvmExitPause;
403	static FNSVMEXITHANDLER hmR0SvmExitFerrFreeze;
404	static FNSVMEXITHANDLER hmR0SvmExitIret;
405	static FNSVMEXITHANDLER hmR0SvmExitXcptPF;
406	static FNSVMEXITHANDLER hmR0SvmExitXcptUD;
407	static FNSVMEXITHANDLER hmR0SvmExitXcptMF;
408	static FNSVMEXITHANDLER hmR0SvmExitXcptDB;
409	static FNSVMEXITHANDLER hmR0SvmExitXcptAC;
410	static FNSVMEXITHANDLER hmR0SvmExitXcptBP;
411	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(VBOX_WITH_NESTED_HWVIRT_SVM)
412	static FNSVMEXITHANDLER hmR0SvmExitXcptGeneric;
413	#endif
414	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
415	static FNSVMEXITHANDLER hmR0SvmExitClgi;
416	static FNSVMEXITHANDLER hmR0SvmExitStgi;
417	static FNSVMEXITHANDLER hmR0SvmExitVmload;
418	static FNSVMEXITHANDLER hmR0SvmExitVmsave;
419	static FNSVMEXITHANDLER hmR0SvmExitInvlpga;
420	static FNSVMEXITHANDLER hmR0SvmExitVmrun;
421	static FNSVMEXITHANDLER hmR0SvmNestedExitXcptDB;
422	static FNSVMEXITHANDLER hmR0SvmNestedExitXcptBP;
423	#endif
424	/** @} */
425
426	static int hmR0SvmHandleExit(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient);
427	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
428	static int hmR0SvmHandleExitNested(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient);
429	#endif
430
431
432	/*********************************************************************************************************************************
433	* Global Variables *
434	*********************************************************************************************************************************/
435	/** Ring-0 memory object for the IO bitmap. */
436	static RTR0MEMOBJ g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
437	/** Physical address of the IO bitmap. */
438	static RTHCPHYS g_HCPhysIOBitmap;
439	/** Pointer to the IO bitmap. */
440	static R0PTRTYPE(void *) g_pvIOBitmap;
441
442	#ifdef VBOX_STRICT
443	# define HMSVM_LOG_RBP_RSP RT_BIT_32(0)
444	# define HMSVM_LOG_CR_REGS RT_BIT_32(1)
445	# define HMSVM_LOG_CS RT_BIT_32(2)
446	# define HMSVM_LOG_SS RT_BIT_32(3)
447	# define HMSVM_LOG_FS RT_BIT_32(4)
448	# define HMSVM_LOG_GS RT_BIT_32(5)
449	# define HMSVM_LOG_LBR RT_BIT_32(6)
450	# define HMSVM_LOG_ALL ( HMSVM_LOG_RBP_RSP \
451	\| HMSVM_LOG_CR_REGS \
452	\| HMSVM_LOG_CS \
453	\| HMSVM_LOG_SS \
454	\| HMSVM_LOG_FS \
455	\| HMSVM_LOG_GS \
456	\| HMSVM_LOG_LBR)
457
458	/**
459	* Dumps virtual CPU state and additional info. to the logger for diagnostics.
460	*
461	* @param pVCpu The cross context virtual CPU structure.
462	* @param pVmcb Pointer to the VM control block.
463	* @param pszPrefix Log prefix.
464	* @param fFlags Log flags, see HMSVM_LOG_XXX.
465	* @param uVerbose The verbosity level, currently unused.
466	*/
467	static void hmR0SvmLogState(PVMCPU pVCpu, PCSVMVMCB pVmcb, const char *pszPrefix, uint32_t fFlags, uint8_t uVerbose)
468	{
469	RT_NOREF2(pVCpu, uVerbose);
470	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
471
472	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS);
473	Log4(("%s: cs:rip=%04x:%RX64 efl=%#RX64\n", pszPrefix, pCtx->cs.Sel, pCtx->rip, pCtx->rflags.u));
474
475	if (fFlags & HMSVM_LOG_RBP_RSP)
476	{
477	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_RSP \| CPUMCTX_EXTRN_RBP);
478	Log4(("%s: rsp=%#RX64 rbp=%#RX64\n", pszPrefix, pCtx->rsp, pCtx->rbp));
479	}
480
481	if (fFlags & HMSVM_LOG_CR_REGS)
482	{
483	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR3 \| CPUMCTX_EXTRN_CR4);
484	Log4(("%s: cr0=%#RX64 cr3=%#RX64 cr4=%#RX64\n", pszPrefix, pCtx->cr0, pCtx->cr3, pCtx->cr4));
485	}
486
487	if (fFlags & HMSVM_LOG_CS)
488	{
489	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CS);
490	Log4(("%s: cs={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->cs.Sel, pCtx->cs.u64Base,
491	pCtx->cs.u32Limit, pCtx->cs.Attr.u));
492	}
493	if (fFlags & HMSVM_LOG_SS)
494	{
495	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_SS);
496	Log4(("%s: ss={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->ss.Sel, pCtx->ss.u64Base,
497	pCtx->ss.u32Limit, pCtx->ss.Attr.u));
498	}
499	if (fFlags & HMSVM_LOG_FS)
500	{
501	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_FS);
502	Log4(("%s: fs={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->fs.Sel, pCtx->fs.u64Base,
503	pCtx->fs.u32Limit, pCtx->fs.Attr.u));
504	}
505	if (fFlags & HMSVM_LOG_GS)
506	{
507	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_GS);
508	Log4(("%s: gs={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->gs.Sel, pCtx->gs.u64Base,
509	pCtx->gs.u32Limit, pCtx->gs.Attr.u));
510	}
511
512	PCSVMVMCBSTATESAVE pVmcbGuest = &pVmcb->guest;
513	if (fFlags & HMSVM_LOG_LBR)
514	{
515	Log4(("%s: br_from=%#RX64 br_to=%#RX64 lastxcpt_from=%#RX64 lastxcpt_to=%#RX64\n", pszPrefix, pVmcbGuest->u64BR_FROM,
516	pVmcbGuest->u64BR_TO, pVmcbGuest->u64LASTEXCPFROM, pVmcbGuest->u64LASTEXCPTO));
517	}
518	NOREF(pVmcbGuest); NOREF(pCtx);
519	}
520	#endif /* VBOX_STRICT */
521
522
523	/**
524	* Sets up and activates AMD-V on the current CPU.
525	*
526	* @returns VBox status code.
527	* @param pHostCpu Pointer to the CPU info struct.
528	* @param pVM The cross context VM structure. Can be
529	* NULL after a resume!
530	* @param pvCpuPage Pointer to the global CPU page.
531	* @param HCPhysCpuPage Physical address of the global CPU page.
532	* @param fEnabledByHost Whether the host OS has already initialized AMD-V.
533	* @param pvArg Unused on AMD-V.
534	*/
535	VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBALCPUINFO pHostCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
536	void *pvArg)
537	{
538	Assert(!fEnabledByHost);
539	Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
540	Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
541	Assert(pvCpuPage); NOREF(pvCpuPage);
542	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
543
544	NOREF(pvArg);
545	NOREF(fEnabledByHost);
546
547	/* Paranoid: Disable interrupt as, in theory, interrupt handlers might mess with EFER. */
548	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
549
550	/*
551	* We must turn on AMD-V and setup the host state physical address, as those MSRs are per CPU.
552	*/
553	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
554	if (u64HostEfer & MSR_K6_EFER_SVME)
555	{
556	/* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE is active, then we blindly use AMD-V. */
557	if ( pVM
558	&& pVM->hm.s.svm.fIgnoreInUseError)
559	pHostCpu->fIgnoreAMDVInUseError = true;
560
561	if (!pHostCpu->fIgnoreAMDVInUseError)
562	{
563	ASMSetFlags(fEFlags);
564	return VERR_SVM_IN_USE;
565	}
566	}
567
568	/* Turn on AMD-V in the EFER MSR. */
569	ASMWrMsr(MSR_K6_EFER, u64HostEfer \| MSR_K6_EFER_SVME);
570
571	/* Write the physical page address where the CPU will store the host state while executing the VM. */
572	ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
573
574	/* Restore interrupts. */
575	ASMSetFlags(fEFlags);
576
577	/*
578	* Theoretically, other hypervisors may have used ASIDs, ideally we should flush all
579	* non-zero ASIDs when enabling SVM. AMD doesn't have an SVM instruction to flush all
580	* ASIDs (flushing is done upon VMRUN). Therefore, flag that we need to flush the TLB
581	* entirely with before executing any guest code.
582	*/
583	pHostCpu->fFlushAsidBeforeUse = true;
584
585	/*
586	* Ensure each VCPU scheduled on this CPU gets a new ASID on resume. See @bugref{6255}.
587	*/
588	++pHostCpu->cTlbFlushes;
589
590	return VINF_SUCCESS;
591	}
592
593
594	/**
595	* Deactivates AMD-V on the current CPU.
596	*
597	* @returns VBox status code.
598	* @param pHostCpu Pointer to the CPU info struct.
599	* @param pvCpuPage Pointer to the global CPU page.
600	* @param HCPhysCpuPage Physical address of the global CPU page.
601	*/
602	VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBALCPUINFO pHostCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
603	{
604	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
605	AssertReturn( HCPhysCpuPage
606	&& HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
607	AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
608	RT_NOREF(pHostCpu);
609
610	/* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with EFER. */
611	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
612
613	/* Turn off AMD-V in the EFER MSR. */
614	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
615	ASMWrMsr(MSR_K6_EFER, u64HostEfer & ~MSR_K6_EFER_SVME);
616
617	/* Invalidate host state physical address. */
618	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
619
620	/* Restore interrupts. */
621	ASMSetFlags(fEFlags);
622
623	return VINF_SUCCESS;
624	}
625
626
627	/**
628	* Does global AMD-V initialization (called during module initialization).
629	*
630	* @returns VBox status code.
631	*/
632	VMMR0DECL(int) SVMR0GlobalInit(void)
633	{
634	/*
635	* Allocate 12 KB (3 pages) for the IO bitmap. Since this is non-optional and we always
636	* intercept all IO accesses, it's done once globally here instead of per-VM.
637	*/
638	Assert(g_hMemObjIOBitmap == NIL_RTR0MEMOBJ);
639	int rc = RTR0MemObjAllocCont(&g_hMemObjIOBitmap, SVM_IOPM_PAGES << X86_PAGE_4K_SHIFT, false /* fExecutable */);
640	if (RT_FAILURE(rc))
641	return rc;
642
643	g_pvIOBitmap = RTR0MemObjAddress(g_hMemObjIOBitmap);
644	g_HCPhysIOBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjIOBitmap, 0 /* iPage */);
645
646	/* Set all bits to intercept all IO accesses. */
647	ASMMemFill32(g_pvIOBitmap, SVM_IOPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
648
649	return VINF_SUCCESS;
650	}
651
652
653	/**
654	* Does global AMD-V termination (called during module termination).
655	*/
656	VMMR0DECL(void) SVMR0GlobalTerm(void)
657	{
658	if (g_hMemObjIOBitmap != NIL_RTR0MEMOBJ)
659	{
660	RTR0MemObjFree(g_hMemObjIOBitmap, true /* fFreeMappings */);
661	g_pvIOBitmap = NULL;
662	g_HCPhysIOBitmap = 0;
663	g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
664	}
665	}
666
667
668	/**
669	* Frees any allocated per-VCPU structures for a VM.
670	*
671	* @param pVM The cross context VM structure.
672	*/
673	DECLINLINE(void) hmR0SvmFreeStructs(PVM pVM)
674	{
675	for (uint32_t i = 0; i < pVM->cCpus; i++)
676	{
677	PVMCPU pVCpu = &pVM->aCpus[i];
678	AssertPtr(pVCpu);
679
680	if (pVCpu->hm.s.svm.hMemObjVmcbHost != NIL_RTR0MEMOBJ)
681	{
682	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcbHost, false);
683	pVCpu->hm.s.svm.HCPhysVmcbHost = 0;
684	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
685	}
686
687	if (pVCpu->hm.s.svm.hMemObjVmcb != NIL_RTR0MEMOBJ)
688	{
689	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcb, false);
690	pVCpu->hm.s.svm.pVmcb = NULL;
691	pVCpu->hm.s.svm.HCPhysVmcb = 0;
692	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
693	}
694
695	if (pVCpu->hm.s.svm.hMemObjMsrBitmap != NIL_RTR0MEMOBJ)
696	{
697	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjMsrBitmap, false);
698	pVCpu->hm.s.svm.pvMsrBitmap = NULL;
699	pVCpu->hm.s.svm.HCPhysMsrBitmap = 0;
700	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
701	}
702	}
703	}
704
705
706	/**
707	* Does per-VM AMD-V initialization.
708	*
709	* @returns VBox status code.
710	* @param pVM The cross context VM structure.
711	*/
712	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
713	{
714	int rc = VERR_INTERNAL_ERROR_5;
715
716	/*
717	* Check for an AMD CPU erratum which requires us to flush the TLB before every world-switch.
718	*/
719	uint32_t u32Family;
720	uint32_t u32Model;
721	uint32_t u32Stepping;
722	if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping))
723	{
724	Log4Func(("AMD cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping));
725	pVM->hm.s.svm.fAlwaysFlushTLB = true;
726	}
727
728	/*
729	* Initialize the R0 memory objects up-front so we can properly cleanup on allocation failures.
730	*/
731	for (VMCPUID i = 0; i < pVM->cCpus; i++)
732	{
733	PVMCPU pVCpu = &pVM->aCpus[i];
734	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
735	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
736	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
737	}
738
739	for (VMCPUID i = 0; i < pVM->cCpus; i++)
740	{
741	PVMCPU pVCpu = &pVM->aCpus[i];
742
743	/*
744	* Allocate one page for the host-context VM control block (VMCB). This is used for additional host-state (such as
745	* FS, GS, Kernel GS Base, etc.) apart from the host-state save area specified in MSR_K8_VM_HSAVE_PA.
746	*/
747	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcbHost, SVM_VMCB_PAGES << PAGE_SHIFT, false /* fExecutable */);
748	if (RT_FAILURE(rc))
749	goto failure_cleanup;
750
751	void *pvVmcbHost = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcbHost);
752	pVCpu->hm.s.svm.HCPhysVmcbHost = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcbHost, 0 /* iPage */);
753	Assert(pVCpu->hm.s.svm.HCPhysVmcbHost < _4G);
754	ASMMemZeroPage(pvVmcbHost);
755
756	/*
757	* Allocate one page for the guest-state VMCB.
758	*/
759	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcb, SVM_VMCB_PAGES << PAGE_SHIFT, false /* fExecutable */);
760	if (RT_FAILURE(rc))
761	goto failure_cleanup;
762
763	pVCpu->hm.s.svm.pVmcb = (PSVMVMCB)RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcb);
764	pVCpu->hm.s.svm.HCPhysVmcb = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcb, 0 /* iPage */);
765	Assert(pVCpu->hm.s.svm.HCPhysVmcb < _4G);
766	ASMMemZeroPage(pVCpu->hm.s.svm.pVmcb);
767
768	/*
769	* Allocate two pages (8 KB) for the MSR permission bitmap. There doesn't seem to be a way to convince
770	* SVM to not require one.
771	*/
772	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT,
773	false /* fExecutable */);
774	if (RT_FAILURE(rc))
775	goto failure_cleanup;
776
777	pVCpu->hm.s.svm.pvMsrBitmap = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjMsrBitmap);
778	pVCpu->hm.s.svm.HCPhysMsrBitmap = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjMsrBitmap, 0 /* iPage */);
779	/* Set all bits to intercept all MSR accesses (changed later on). */
780	ASMMemFill32(pVCpu->hm.s.svm.pvMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
781	}
782
783	return VINF_SUCCESS;
784
785	failure_cleanup:
786	hmR0SvmFreeStructs(pVM);
787	return rc;
788	}
789
790
791	/**
792	* Does per-VM AMD-V termination.
793	*
794	* @returns VBox status code.
795	* @param pVM The cross context VM structure.
796	*/
797	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
798	{
799	hmR0SvmFreeStructs(pVM);
800	return VINF_SUCCESS;
801	}
802
803
804	/**
805	* Returns whether the VMCB Clean Bits feature is supported.
806	*
807	* @return @c true if supported, @c false otherwise.
808	* @param pVCpu The cross context virtual CPU structure.
809	*/
810	DECLINLINE(bool) hmR0SvmSupportsVmcbCleanBits(PVMCPU pVCpu)
811	{
812	PVM pVM = pVCpu->CTX_SUFF(pVM);
813	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
814	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
815	{
816	return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN)
817	&& pVM->cpum.ro.GuestFeatures.fSvmVmcbClean;
818	}
819	#endif
820	return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN);
821	}
822
823
824	/**
825	* Returns whether the decode assists feature is supported.
826	*
827	* @return @c true if supported, @c false otherwise.
828	* @param pVCpu The cross context virtual CPU structure.
829	*/
830	DECLINLINE(bool) hmR0SvmSupportsDecodeAssists(PVMCPU pVCpu)
831	{
832	PVM pVM = pVCpu->CTX_SUFF(pVM);
833	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
834	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
835	{
836	return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_DECODE_ASSISTS)
837	&& pVM->cpum.ro.GuestFeatures.fSvmDecodeAssists;
838	}
839	#endif
840	return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_DECODE_ASSISTS);
841	}
842
843
844	/**
845	* Returns whether the NRIP_SAVE feature is supported.
846	*
847	* @return @c true if supported, @c false otherwise.
848	* @param pVCpu The cross context virtual CPU structure.
849	*/
850	DECLINLINE(bool) hmR0SvmSupportsNextRipSave(PVMCPU pVCpu)
851	{
852	PVM pVM = pVCpu->CTX_SUFF(pVM);
853	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
854	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
855	{
856	return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
857	&& pVM->cpum.ro.GuestFeatures.fSvmNextRipSave;
858	}
859	#endif
860	return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_NRIP_SAVE);
861	}
862
863
864	/**
865	* Sets the permission bits for the specified MSR in the MSRPM bitmap.
866	*
867	* @param pVCpu The cross context virtual CPU structure.
868	* @param pbMsrBitmap Pointer to the MSR bitmap.
869	* @param idMsr The MSR for which the permissions are being set.
870	* @param enmRead MSR read permissions.
871	* @param enmWrite MSR write permissions.
872	*
873	* @remarks This function does -not- clear the VMCB clean bits for MSRPM. The
874	* caller needs to take care of this.
875	*/
876	static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, uint8_t *pbMsrBitmap, uint32_t idMsr, SVMMSREXITREAD enmRead,
877	SVMMSREXITWRITE enmWrite)
878	{
879	bool const fInNestedGuestMode = CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx);
880	uint16_t offMsrpm;
881	uint8_t uMsrpmBit;
882	int rc = HMSvmGetMsrpmOffsetAndBit(idMsr, &offMsrpm, &uMsrpmBit);
883	AssertRC(rc);
884
885	Assert(uMsrpmBit == 0 \|\| uMsrpmBit == 2 \|\| uMsrpmBit == 4 \|\| uMsrpmBit == 6);
886	Assert(offMsrpm < SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
887
888	pbMsrBitmap += offMsrpm;
889	if (enmRead == SVMMSREXIT_INTERCEPT_READ)
890	*pbMsrBitmap \|= RT_BIT(uMsrpmBit);
891	else
892	{
893	if (!fInNestedGuestMode)
894	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit);
895	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
896	else
897	{
898	/* Only clear the bit if the nested-guest is also not intercepting the MSR read.*/
899	uint8_t const pbNstGstMsrBitmap = (uint8_t )pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pvMsrBitmap);
900	pbNstGstMsrBitmap += offMsrpm;
901	if (!(*pbNstGstMsrBitmap & RT_BIT(uMsrpmBit)))
902	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit);
903	else
904	Assert(*pbMsrBitmap & RT_BIT(uMsrpmBit));
905	}
906	#endif
907	}
908
909	if (enmWrite == SVMMSREXIT_INTERCEPT_WRITE)
910	*pbMsrBitmap \|= RT_BIT(uMsrpmBit + 1);
911	else
912	{
913	if (!fInNestedGuestMode)
914	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit + 1);
915	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
916	else
917	{
918	/* Only clear the bit if the nested-guest is also not intercepting the MSR write.*/
919	uint8_t const pbNstGstMsrBitmap = (uint8_t )pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pvMsrBitmap);
920	pbNstGstMsrBitmap += offMsrpm;
921	if (!(*pbNstGstMsrBitmap & RT_BIT(uMsrpmBit + 1)))
922	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit + 1);
923	else
924	Assert(*pbMsrBitmap & RT_BIT(uMsrpmBit + 1));
925	}
926	#endif
927	}
928	}
929
930
931	/**
932	* Sets up AMD-V for the specified VM.
933	* This function is only called once per-VM during initalization.
934	*
935	* @returns VBox status code.
936	* @param pVM The cross context VM structure.
937	*/
938	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
939	{
940	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
941	AssertReturn(pVM, VERR_INVALID_PARAMETER);
942	Assert(pVM->hm.s.svm.fSupported);
943
944	bool const fPauseFilter = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER);
945	bool const fPauseFilterThreshold = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER_THRESHOLD);
946	bool const fUsePauseFilter = fPauseFilter && pVM->hm.s.svm.cPauseFilter;
947
948	bool const fLbrVirt = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_LBR_VIRT);
949	bool const fUseLbrVirt = fLbrVirt; /** @todo CFGM, IEM implementation etc. */
950
951	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
952	bool const fVirtVmsaveVmload = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VIRT_VMSAVE_VMLOAD);
953	bool const fUseVirtVmsaveVmload = fVirtVmsaveVmload && pVM->hm.s.svm.fVirtVmsaveVmload && pVM->hm.s.fNestedPaging;
954
955	bool const fVGif = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VGIF);
956	bool const fUseVGif = fVGif && pVM->hm.s.svm.fVGif;
957	#endif
958
959	PVMCPU pVCpu = &pVM->aCpus[0];
960	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
961	AssertMsgReturn(pVmcb, ("Invalid pVmcb for vcpu[0]\n"), VERR_SVM_INVALID_PVMCB);
962	PSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
963
964	/* Always trap #AC for reasons of security. */
965	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT_32(X86_XCPT_AC);
966
967	/* Always trap #DB for reasons of security. */
968	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT_32(X86_XCPT_DB);
969
970	/* Trap exceptions unconditionally (debug purposes). */
971	#ifdef HMSVM_ALWAYS_TRAP_PF
972	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT(X86_XCPT_PF);
973	#endif
974	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
975	/* If you add any exceptions here, make sure to update hmR0SvmHandleExit(). */
976	pVmcbCtrl->u32InterceptXcpt \|= 0
977	\| RT_BIT(X86_XCPT_BP)
978	\| RT_BIT(X86_XCPT_DE)
979	\| RT_BIT(X86_XCPT_NM)
980	\| RT_BIT(X86_XCPT_UD)
981	\| RT_BIT(X86_XCPT_NP)
982	\| RT_BIT(X86_XCPT_SS)
983	\| RT_BIT(X86_XCPT_GP)
984	\| RT_BIT(X86_XCPT_PF)
985	\| RT_BIT(X86_XCPT_MF)
986	;
987	#endif
988
989	/* Apply the exceptions intercepts needed by the GIM provider. */
990	if (pVCpu->hm.s.fGIMTrapXcptUD)
991	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT(X86_XCPT_UD);
992
993	/* Set up unconditional intercepts and conditions. */
994	pVmcbCtrl->u64InterceptCtrl = HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS
995	\| SVM_CTRL_INTERCEPT_VMMCALL;
996
997	#ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
998	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_TASK_SWITCH;
999	#endif
1000
1001	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
1002	/* Virtualized VMSAVE/VMLOAD. */
1003	pVmcbCtrl->LbrVirt.n.u1VirtVmsaveVmload = fUseVirtVmsaveVmload;
1004	if (!fUseVirtVmsaveVmload)
1005	{
1006	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_VMSAVE
1007	\| SVM_CTRL_INTERCEPT_VMLOAD;
1008	}
1009
1010	/* Virtual GIF. */
1011	pVmcbCtrl->IntCtrl.n.u1VGifEnable = fUseVGif;
1012	if (!fUseVGif)
1013	{
1014	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_CLGI
1015	\| SVM_CTRL_INTERCEPT_STGI;
1016	}
1017	#endif
1018
1019	/* CR4 writes must always be intercepted for tracking PGM mode changes. */
1020	pVmcbCtrl->u16InterceptWrCRx = RT_BIT(4);
1021
1022	/* Intercept all DRx reads and writes by default. Changed later on. */
1023	pVmcbCtrl->u16InterceptRdDRx = 0xffff;
1024	pVmcbCtrl->u16InterceptWrDRx = 0xffff;
1025
1026	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
1027	pVmcbCtrl->IntCtrl.n.u1VIntrMasking = 1;
1028
1029	/* Ignore the priority in the virtual TPR. This is necessary for delivering PIC style (ExtInt) interrupts
1030	and we currently deliver both PIC and APIC interrupts alike, see hmR0SvmEvaluatePendingEvent() */
1031	pVmcbCtrl->IntCtrl.n.u1IgnoreTPR = 1;
1032
1033	/* Set the IO permission bitmap physical addresses. */
1034	pVmcbCtrl->u64IOPMPhysAddr = g_HCPhysIOBitmap;
1035
1036	/* LBR virtualization. */
1037	pVmcbCtrl->LbrVirt.n.u1LbrVirt = fUseLbrVirt;
1038
1039	/* The host ASID MBZ, for the guest start with 1. */
1040	pVmcbCtrl->TLBCtrl.n.u32ASID = 1;
1041
1042	/* Setup Nested Paging. This doesn't change throughout the execution time of the VM. */
1043	pVmcbCtrl->NestedPagingCtrl.n.u1NestedPaging = pVM->hm.s.fNestedPaging;
1044
1045	/* Without Nested Paging, we need additionally intercepts. */
1046	if (!pVM->hm.s.fNestedPaging)
1047	{
1048	/* CR3 reads/writes must be intercepted; our shadow values differ from the guest values. */
1049	pVmcbCtrl->u16InterceptRdCRx \|= RT_BIT(3);
1050	pVmcbCtrl->u16InterceptWrCRx \|= RT_BIT(3);
1051
1052	/* Intercept INVLPG and task switches (may change CR3, EFLAGS, LDT). */
1053	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_INVLPG
1054	\| SVM_CTRL_INTERCEPT_TASK_SWITCH;
1055
1056	/* Page faults must be intercepted to implement shadow paging. */
1057	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT(X86_XCPT_PF);
1058	}
1059
1060	/* Setup Pause Filter for guest pause-loop (spinlock) exiting. */
1061	if (fUsePauseFilter)
1062	{
1063	Assert(pVM->hm.s.svm.cPauseFilter > 0);
1064	pVmcbCtrl->u16PauseFilterCount = pVM->hm.s.svm.cPauseFilter;
1065	if (fPauseFilterThreshold)
1066	pVmcbCtrl->u16PauseFilterThreshold = pVM->hm.s.svm.cPauseFilterThresholdTicks;
1067	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_PAUSE;
1068	}
1069
1070	/*
1071	* Setup the MSR permission bitmap.
1072	* The following MSRs are saved/restored automatically during the world-switch.
1073	* Don't intercept guest read/write accesses to these MSRs.
1074	*/
1075	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
1076	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1077	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_CSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1078	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K6_STAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1079	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_SF_MASK, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1080	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_FS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1081	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1082	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_KERNEL_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1083	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_IA32_SYSENTER_CS, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1084	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_IA32_SYSENTER_ESP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1085	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_IA32_SYSENTER_EIP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1086	pVmcbCtrl->u64MSRPMPhysAddr = pVCpu->hm.s.svm.HCPhysMsrBitmap;
1087
1088	/* Initially all VMCB clean bits MBZ indicating that everything should be loaded from the VMCB in memory. */
1089	Assert(pVmcbCtrl->u32VmcbCleanBits == 0);
1090
1091	for (VMCPUID i = 1; i < pVM->cCpus; i++)
1092	{
1093	PVMCPU pVCpuCur = &pVM->aCpus[i];
1094	PSVMVMCB pVmcbCur = pVM->aCpus[i].hm.s.svm.pVmcb;
1095	AssertMsgReturn(pVmcbCur, ("Invalid pVmcb for vcpu[%u]\n", i), VERR_SVM_INVALID_PVMCB);
1096	PSVMVMCBCTRL pVmcbCtrlCur = &pVmcbCur->ctrl;
1097
1098	/* Copy the VMCB control area. */
1099	memcpy(pVmcbCtrlCur, pVmcbCtrl, sizeof(*pVmcbCtrlCur));
1100
1101	/* Copy the MSR bitmap and setup the VCPU-specific host physical address. */
1102	uint8_t pbMsrBitmapCur = (uint8_t )pVCpuCur->hm.s.svm.pvMsrBitmap;
1103	memcpy(pbMsrBitmapCur, pbMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
1104	pVmcbCtrlCur->u64MSRPMPhysAddr = pVCpuCur->hm.s.svm.HCPhysMsrBitmap;
1105
1106	/* Initially all VMCB clean bits MBZ indicating that everything should be loaded from the VMCB in memory. */
1107	Assert(pVmcbCtrlCur->u32VmcbCleanBits == 0);
1108
1109	/* Verify our assumption that GIM providers trap #UD uniformly across VCPUs initially. */
1110	Assert(pVCpuCur->hm.s.fGIMTrapXcptUD == pVCpu->hm.s.fGIMTrapXcptUD);
1111	}
1112
1113	return VINF_SUCCESS;
1114	}
1115
1116
1117	/**
1118	* Gets a pointer to the currently active guest (or nested-guest) VMCB.
1119	*
1120	* @returns Pointer to the current context VMCB.
1121	* @param pVCpu The cross context virtual CPU structure.
1122	*/
1123	DECLINLINE(PSVMVMCB) hmR0SvmGetCurrentVmcb(PVMCPU pVCpu)
1124	{
1125	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
1126	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
1127	return pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pVmcb);
1128	#endif
1129	return pVCpu->hm.s.svm.pVmcb;
1130	}
1131
1132
1133	/**
1134	* Gets a pointer to the nested-guest VMCB cache.
1135	*
1136	* @returns Pointer to the nested-guest VMCB cache.
1137	* @param pVCpu The cross context virtual CPU structure.
1138	*/
1139	DECLINLINE(PSVMNESTEDVMCBCACHE) hmR0SvmGetNestedVmcbCache(PVMCPU pVCpu)
1140	{
1141	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
1142	Assert(pVCpu->hm.s.svm.NstGstVmcbCache.fCacheValid);
1143	return &pVCpu->hm.s.svm.NstGstVmcbCache;
1144	#else
1145	RT_NOREF(pVCpu);
1146	return NULL;
1147	#endif
1148	}
1149
1150
1151	/**
1152	* Invalidates a guest page by guest virtual address.
1153	*
1154	* @returns VBox status code.
1155	* @param pVCpu The cross context virtual CPU structure.
1156	* @param GCVirt Guest virtual address of the page to invalidate.
1157	*/
1158	VMMR0DECL(int) SVMR0InvalidatePage(PVMCPU pVCpu, RTGCPTR GCVirt)
1159	{
1160	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.svm.fSupported);
1161
1162	bool const fFlushPending = pVCpu->CTX_SUFF(pVM)->hm.s.svm.fAlwaysFlushTLB \|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_FLUSH);
1163
1164	/* Skip it if a TLB flush is already pending. */
1165	if (!fFlushPending)
1166	{
1167	Log4Func(("%#RGv\n", GCVirt));
1168
1169	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
1170	AssertMsgReturn(pVmcb, ("Invalid pVmcb!\n"), VERR_SVM_INVALID_PVMCB);
1171
1172	#if HC_ARCH_BITS == 32
1173	/* If we get a flush in 64-bit guest mode, then force a full TLB flush. INVLPGA takes only 32-bit addresses. */
1174	if (CPUMIsGuestInLongMode(pVCpu))
1175	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
1176	else
1177	#endif
1178	{
1179	SVMR0InvlpgA(GCVirt, pVmcb->ctrl.TLBCtrl.n.u32ASID);
1180	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
1181	}
1182	}
1183	return VINF_SUCCESS;
1184	}
1185
1186
1187	/**
1188	* Flushes the appropriate tagged-TLB entries.
1189	*
1190	* @param pVCpu The cross context virtual CPU structure.
1191	* @param pVmcb Pointer to the VM control block.
1192	* @param pHostCpu Pointer to the HM host-CPU info.
1193	*/
1194	static void hmR0SvmFlushTaggedTlb(PVMCPU pVCpu, PSVMVMCB pVmcb, PHMGLOBALCPUINFO pHostCpu)
1195	{
1196	/*
1197	* Force a TLB flush for the first world switch if the current CPU differs from the one
1198	* we ran on last. This can happen both for start & resume due to long jumps back to
1199	* ring-3.
1200	*
1201	* We also force a TLB flush every time when executing a nested-guest VCPU as there is no
1202	* correlation between it and the physical CPU.
1203	*
1204	* If the TLB flush count changed, another VM (VCPU rather) has hit the ASID limit while
1205	* flushing the TLB, so we cannot reuse the ASIDs without flushing.
1206	*/
1207	bool fNewAsid = false;
1208	Assert(pHostCpu->idCpu != NIL_RTCPUID);
1209	if ( pVCpu->hm.s.idLastCpu != pHostCpu->idCpu
1210	\|\| pVCpu->hm.s.cTlbFlushes != pHostCpu->cTlbFlushes
1211	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
1212	\|\| CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx)
1213	#endif
1214	)
1215	{
1216	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
1217	pVCpu->hm.s.fForceTLBFlush = true;
1218	fNewAsid = true;
1219	}
1220
1221	/* Set TLB flush state as checked until we return from the world switch. */
1222	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true);
1223
1224	/* Check for explicit TLB flushes. */
1225	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
1226	{
1227	pVCpu->hm.s.fForceTLBFlush = true;
1228	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
1229	}
1230
1231	/*
1232	* If the AMD CPU erratum 170, We need to flush the entire TLB for each world switch. Sad.
1233	* This Host CPU requirement takes precedence.
1234	*/
1235	PVM pVM = pVCpu->CTX_SUFF(pVM);
1236	if (pVM->hm.s.svm.fAlwaysFlushTLB)
1237	{
1238	pHostCpu->uCurrentAsid = 1;
1239	pVCpu->hm.s.uCurrentAsid = 1;
1240	pVCpu->hm.s.cTlbFlushes = pHostCpu->cTlbFlushes;
1241	pVCpu->hm.s.idLastCpu = pHostCpu->idCpu;
1242	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
1243
1244	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
1245	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1246	}
1247	else
1248	{
1249	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_NOTHING;
1250	if (pVCpu->hm.s.fForceTLBFlush)
1251	{
1252	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
1253	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1254
1255	if (fNewAsid)
1256	{
1257	++pHostCpu->uCurrentAsid;
1258
1259	bool fHitASIDLimit = false;
1260	if (pHostCpu->uCurrentAsid >= pVM->hm.s.uMaxAsid)
1261	{
1262	pHostCpu->uCurrentAsid = 1; /* Wraparound at 1; host uses 0 */
1263	pHostCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new ASID. */
1264	fHitASIDLimit = true;
1265	}
1266
1267	if ( fHitASIDLimit
1268	\|\| pHostCpu->fFlushAsidBeforeUse)
1269	{
1270	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
1271	pHostCpu->fFlushAsidBeforeUse = false;
1272	}
1273
1274	pVCpu->hm.s.uCurrentAsid = pHostCpu->uCurrentAsid;
1275	pVCpu->hm.s.idLastCpu = pHostCpu->idCpu;
1276	pVCpu->hm.s.cTlbFlushes = pHostCpu->cTlbFlushes;
1277	}
1278	else
1279	{
1280	if (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
1281	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
1282	else
1283	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
1284	}
1285
1286	pVCpu->hm.s.fForceTLBFlush = false;
1287	}
1288	}
1289
1290	/* Update VMCB with the ASID. */
1291	if (pVmcb->ctrl.TLBCtrl.n.u32ASID != pVCpu->hm.s.uCurrentAsid)
1292	{
1293	pVmcb->ctrl.TLBCtrl.n.u32ASID = pVCpu->hm.s.uCurrentAsid;
1294	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_ASID;
1295	}
1296
1297	AssertMsg(pVCpu->hm.s.idLastCpu == pHostCpu->idCpu,
1298	("vcpu idLastCpu=%u hostcpu idCpu=%u\n", pVCpu->hm.s.idLastCpu, pHostCpu->idCpu));
1299	AssertMsg(pVCpu->hm.s.cTlbFlushes == pHostCpu->cTlbFlushes,
1300	("Flush count mismatch for cpu %u (%u vs %u)\n", pHostCpu->idCpu, pVCpu->hm.s.cTlbFlushes, pHostCpu->cTlbFlushes));
1301	AssertMsg(pHostCpu->uCurrentAsid >= 1 && pHostCpu->uCurrentAsid < pVM->hm.s.uMaxAsid,
1302	("cpu%d uCurrentAsid = %x\n", pHostCpu->idCpu, pHostCpu->uCurrentAsid));
1303	AssertMsg(pVCpu->hm.s.uCurrentAsid >= 1 && pVCpu->hm.s.uCurrentAsid < pVM->hm.s.uMaxAsid,
1304	("cpu%d VM uCurrentAsid = %x\n", pHostCpu->idCpu, pVCpu->hm.s.uCurrentAsid));
1305
1306	#ifdef VBOX_WITH_STATISTICS
1307	if (pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_NOTHING)
1308	STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch);
1309	else if ( pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT
1310	\|\| pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT_RETAIN_GLOBALS)
1311	{
1312	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
1313	}
1314	else
1315	{
1316	Assert(pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_ENTIRE);
1317	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushEntire);
1318	}
1319	#endif
1320	}
1321
1322
1323	/** @name 64-bit guest on 32-bit host OS helper functions.
1324	*
1325	* The host CPU is still 64-bit capable but the host OS is running in 32-bit
1326	* mode (code segment, paging). These wrappers/helpers perform the necessary
1327	* bits for the 32->64 switcher.
1328	*
1329	* @{ */
1330	#if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS)
1331	/**
1332	* Prepares for and executes VMRUN (64-bit guests on a 32-bit host).
1333	*
1334	* @returns VBox status code.
1335	* @param HCPhysVmcbHost Physical address of host VMCB.
1336	* @param HCPhysVmcb Physical address of the VMCB.
1337	* @param pCtx Pointer to the guest-CPU context.
1338	* @param pVM The cross context VM structure.
1339	* @param pVCpu The cross context virtual CPU structure.
1340	*/
1341	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS HCPhysVmcbHost, RTHCPHYS HCPhysVmcb, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
1342	{
1343	RT_NOREF2(pVM, pCtx);
1344	uint32_t aParam[8];
1345	aParam[0] = RT_LO_U32(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Lo. */
1346	aParam[1] = RT_HI_U32(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Hi. */
1347	aParam[2] = RT_LO_U32(HCPhysVmcb); /* Param 2: HCPhysVmcb - Lo. */
1348	aParam[3] = RT_HI_U32(HCPhysVmcb); /* Param 2: HCPhysVmcb - Hi. */
1349	aParam[4] = VM_RC_ADDR(pVM, pVM);
1350	aParam[5] = 0;
1351	aParam[6] = VM_RC_ADDR(pVM, pVCpu);
1352	aParam[7] = 0;
1353
1354	return SVMR0Execute64BitsHandler(pVCpu, HM64ON32OP_SVMRCVMRun64, RT_ELEMENTS(aParam), &aParam[0]);
1355	}
1356
1357
1358	/**
1359	* Executes the specified VMRUN handler in 64-bit mode.
1360	*
1361	* @returns VBox status code.
1362	* @param pVCpu The cross context virtual CPU structure.
1363	* @param enmOp The operation to perform.
1364	* @param cParams Number of parameters.
1365	* @param paParam Array of 32-bit parameters.
1366	*/
1367	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVMCPU pVCpu, HM64ON32OP enmOp, uint32_t cParams, uint32_t *paParam)
1368	{
1369	PVM pVM = pVCpu->CTX_SUFF(pVM);
1370	AssertReturn(pVM->hm.s.pfnHost32ToGuest64R0, VERR_HM_NO_32_TO_64_SWITCHER);
1371	Assert(enmOp > HM64ON32OP_INVALID && enmOp < HM64ON32OP_END);
1372
1373	/* Disable interrupts. */
1374	RTHCUINTREG const fEFlags = ASMIntDisableFlags();
1375
1376	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1377	RTCPUID idHostCpu = RTMpCpuId();
1378	CPUMR0SetLApic(pVCpu, idHostCpu);
1379	#endif
1380
1381	CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
1382	CPUMSetHyperEIP(pVCpu, enmOp);
1383	for (int i = (int)cParams - 1; i >= 0; i--)
1384	CPUMPushHyper(pVCpu, paParam[i]);
1385
1386	/* Call the switcher. */
1387	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatWorldSwitch3264, z);
1388	int rc = pVM->hm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
1389	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatWorldSwitch3264, z);
1390
1391	/* Restore interrupts. */
1392	ASMSetFlags(fEFlags);
1393	return rc;
1394	}
1395
1396	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */
1397	/** @} */
1398
1399
1400	/**
1401	* Sets an exception intercept in the specified VMCB.
1402	*
1403	* @param pVmcb Pointer to the VM control block.
1404	* @param uXcpt The exception (X86_XCPT_*).
1405	*/
1406	DECLINLINE(void) hmR0SvmSetXcptIntercept(PSVMVMCB pVmcb, uint8_t uXcpt)
1407	{
1408	if (!(pVmcb->ctrl.u32InterceptXcpt & RT_BIT(uXcpt)))
1409	{
1410	pVmcb->ctrl.u32InterceptXcpt \|= RT_BIT(uXcpt);
1411	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1412	}
1413	}
1414
1415
1416	/**
1417	* Clears an exception intercept in the specified VMCB.
1418	*
1419	* @param pVCpu The cross context virtual CPU structure.
1420	* @param pVmcb Pointer to the VM control block.
1421	* @param uXcpt The exception (X86_XCPT_*).
1422	*
1423	* @remarks This takes into account if we're executing a nested-guest and only
1424	* removes the exception intercept if both the guest -and- nested-guest
1425	* are not intercepting it.
1426	*/
1427	DECLINLINE(void) hmR0SvmClearXcptIntercept(PVMCPU pVCpu, PSVMVMCB pVmcb, uint8_t uXcpt)
1428	{
1429	Assert(uXcpt != X86_XCPT_DB);
1430	Assert(uXcpt != X86_XCPT_AC);
1431	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
1432	if (pVmcb->ctrl.u32InterceptXcpt & RT_BIT(uXcpt))
1433	{
1434	bool fRemove = true;
1435	# ifdef VBOX_WITH_NESTED_HWVIRT_SVM
1436	/* Only remove the intercept if the nested-guest is also not intercepting it! */
1437	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1438	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1439	{
1440	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu);
1441	fRemove = !(pVmcbNstGstCache->u32InterceptXcpt & RT_BIT(uXcpt));
1442	}
1443	# else
1444	RT_NOREF(pVCpu);
1445	# endif
1446	if (fRemove)
1447	{
1448	pVmcb->ctrl.u32InterceptXcpt &= ~RT_BIT(uXcpt);
1449	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1450	}
1451	}
1452	#else
1453	RT_NOREF3(pVCpu, pVmcb, uXcpt);
1454	#endif
1455	}
1456
1457
1458	/**
1459	* Sets a control intercept in the specified VMCB.
1460	*
1461	* @param pVmcb Pointer to the VM control block.
1462	* @param fCtrlIntercept The control intercept (SVM_CTRL_INTERCEPT_*).
1463	*/
1464	DECLINLINE(void) hmR0SvmSetCtrlIntercept(PSVMVMCB pVmcb, uint64_t fCtrlIntercept)
1465	{
1466	if (!(pVmcb->ctrl.u64InterceptCtrl & fCtrlIntercept))
1467	{
1468	pVmcb->ctrl.u64InterceptCtrl \|= fCtrlIntercept;
1469	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1470	}
1471	}
1472
1473
1474	/**
1475	* Clears a control intercept in the specified VMCB.
1476	*
1477	* @returns @c true if the intercept is still set, @c false otherwise.
1478	* @param pVCpu The cross context virtual CPU structure.
1479	* @param pVmcb Pointer to the VM control block.
1480	* @param fCtrlIntercept The control intercept (SVM_CTRL_INTERCEPT_*).
1481	*
1482	* @remarks This takes into account if we're executing a nested-guest and only
1483	* removes the control intercept if both the guest -and- nested-guest
1484	* are not intercepting it.
1485	*/
1486	static bool hmR0SvmClearCtrlIntercept(PVMCPU pVCpu, PSVMVMCB pVmcb, uint64_t fCtrlIntercept)
1487	{
1488	if (pVmcb->ctrl.u64InterceptCtrl & fCtrlIntercept)
1489	{
1490	bool fRemove = true;
1491	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
1492	/* Only remove the control intercept if the nested-guest is also not intercepting it! */
1493	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
1494	{
1495	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu);
1496	fRemove = !(pVmcbNstGstCache->u64InterceptCtrl & fCtrlIntercept);
1497	}
1498	#else
1499	RT_NOREF(pVCpu);
1500	#endif
1501	if (fRemove)
1502	{
1503	pVmcb->ctrl.u64InterceptCtrl &= ~fCtrlIntercept;
1504	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1505	}
1506	}
1507
1508	return RT_BOOL(pVmcb->ctrl.u64InterceptCtrl & fCtrlIntercept);
1509	}
1510
1511
1512	/**
1513	* Exports the guest (or nested-guest) CR0 into the VMCB.
1514	*
1515	* @param pVCpu The cross context virtual CPU structure.
1516	* @param pVmcb Pointer to the VM control block.
1517	*
1518	* @remarks This assumes we always pre-load the guest FPU.
1519	* @remarks No-long-jump zone!!!
1520	*/
1521	static void hmR0SvmExportGuestCR0(PVMCPU pVCpu, PSVMVMCB pVmcb)
1522	{
1523	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1524
1525	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1526	uint64_t const uGuestCr0 = pCtx->cr0;
1527	uint64_t uShadowCr0 = uGuestCr0;
1528
1529	/* Always enable caching. */
1530	uShadowCr0 &= ~(X86_CR0_CD \| X86_CR0_NW);
1531
1532	/* When Nested Paging is not available use shadow page tables and intercept #PFs (latter done in SVMR0SetupVM()). */
1533	if (!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging)
1534	{
1535	uShadowCr0 \|= X86_CR0_PG /* Use shadow page tables. */
1536	\| X86_CR0_WP; /* Guest CPL 0 writes to its read-only pages should cause a #PF #VMEXIT. */
1537	}
1538
1539	/*
1540	* Use the #MF style of legacy-FPU error reporting for now. Although AMD-V has MSRs that
1541	* lets us isolate the host from it, IEM/REM still needs work to emulate it properly,
1542	* see @bugref{7243#c103}.
1543	*/
1544	if (!(uGuestCr0 & X86_CR0_NE))
1545	{
1546	uShadowCr0 \|= X86_CR0_NE;
1547	hmR0SvmSetXcptIntercept(pVmcb, X86_XCPT_MF);
1548	}
1549	else
1550	hmR0SvmClearXcptIntercept(pVCpu, pVmcb, X86_XCPT_MF);
1551
1552	/*
1553	* If the shadow and guest CR0 are identical we can avoid intercepting CR0 reads.
1554	*
1555	* CR0 writes still needs interception as PGM requires tracking paging mode changes,
1556	* see @bugref{6944}.
1557	*
1558	* We also don't ever want to honor weird things like cache disable from the guest.
1559	* However, we can avoid intercepting changes to the TS & MP bits by clearing the CR0
1560	* write intercept below and keeping SVM_CTRL_INTERCEPT_CR0_SEL_WRITE instead.
1561	*/
1562	if (uShadowCr0 == uGuestCr0)
1563	{
1564	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1565	{
1566	pVmcb->ctrl.u16InterceptRdCRx &= ~RT_BIT(0);
1567	pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(0);
1568	Assert(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_CR0_SEL_WRITE);
1569	}
1570	else
1571	{
1572	/* If the nested-hypervisor intercepts CR0 reads/writes, we need to continue intercepting them. */
1573	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu);
1574	pVmcb->ctrl.u16InterceptRdCRx = (pVmcb->ctrl.u16InterceptRdCRx & ~RT_BIT(0))
1575	\| (pVmcbNstGstCache->u16InterceptRdCRx & RT_BIT(0));
1576	pVmcb->ctrl.u16InterceptWrCRx = (pVmcb->ctrl.u16InterceptWrCRx & ~RT_BIT(0))
1577	\| (pVmcbNstGstCache->u16InterceptWrCRx & RT_BIT(0));
1578	}
1579	}
1580	else
1581	{
1582	pVmcb->ctrl.u16InterceptRdCRx \|= RT_BIT(0);
1583	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(0);
1584	}
1585	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1586
1587	Assert(!RT_HI_U32(uShadowCr0));
1588	if (pVmcb->guest.u64CR0 != uShadowCr0)
1589	{
1590	pVmcb->guest.u64CR0 = uShadowCr0;
1591	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1592	}
1593	}
1594
1595
1596	/**
1597	* Exports the guest (or nested-guest) CR3 into the VMCB.
1598	*
1599	* @param pVCpu The cross context virtual CPU structure.
1600	* @param pVmcb Pointer to the VM control block.
1601	*
1602	* @remarks No-long-jump zone!!!
1603	*/
1604	static void hmR0SvmExportGuestCR3(PVMCPU pVCpu, PSVMVMCB pVmcb)
1605	{
1606	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1607
1608	PVM pVM = pVCpu->CTX_SUFF(pVM);
1609	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1610	if (pVM->hm.s.fNestedPaging)
1611	{
1612	PGMMODE enmShwPagingMode;
1613	#if HC_ARCH_BITS == 32
1614	if (CPUMIsGuestInLongModeEx(pCtx))
1615	enmShwPagingMode = PGMMODE_AMD64_NX;
1616	else
1617	#endif
1618	enmShwPagingMode = PGMGetHostMode(pVM);
1619
1620	pVmcb->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
1621	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1622	pVmcb->guest.u64CR3 = pCtx->cr3;
1623	Assert(pVmcb->ctrl.u64NestedPagingCR3);
1624	}
1625	else
1626	pVmcb->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
1627
1628	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1629	}
1630
1631
1632	/**
1633	* Exports the guest (or nested-guest) CR4 into the VMCB.
1634	*
1635	* @param pVCpu The cross context virtual CPU structure.
1636	* @param pVmcb Pointer to the VM control block.
1637	*
1638	* @remarks No-long-jump zone!!!
1639	*/
1640	static int hmR0SvmExportGuestCR4(PVMCPU pVCpu, PSVMVMCB pVmcb)
1641	{
1642	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1643
1644	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1645	uint64_t uShadowCr4 = pCtx->cr4;
1646	if (!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging)
1647	{
1648	switch (pVCpu->hm.s.enmShadowMode)
1649	{
1650	case PGMMODE_REAL:
1651	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
1652	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1653
1654	case PGMMODE_32_BIT: /* 32-bit paging. */
1655	uShadowCr4 &= ~X86_CR4_PAE;
1656	break;
1657
1658	case PGMMODE_PAE: /* PAE paging. */
1659	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
1660	/** Must use PAE paging as we could use physical memory > 4 GB */
1661	uShadowCr4 \|= X86_CR4_PAE;
1662	break;
1663
1664	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
1665	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
1666	#ifdef VBOX_ENABLE_64_BITS_GUESTS
1667	break;
1668	#else
1669	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1670	#endif
1671
1672	default: /* shut up gcc */
1673	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1674	}
1675	}
1676
1677	/* Whether to save/load/restore XCR0 during world switch depends on CR4.OSXSAVE and host+guest XCR0. */
1678	pVCpu->hm.s.fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
1679
1680	/* Avoid intercepting CR4 reads if the guest and shadow CR4 values are identical. */
1681	if (uShadowCr4 == pCtx->cr4)
1682	{
1683	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1684	pVmcb->ctrl.u16InterceptRdCRx &= ~RT_BIT(4);
1685	else
1686	{
1687	/* If the nested-hypervisor intercepts CR4 reads, we need to continue intercepting them. */
1688	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu);
1689	pVmcb->ctrl.u16InterceptRdCRx = (pVmcb->ctrl.u16InterceptRdCRx & ~RT_BIT(4))
1690	\| (pVmcbNstGstCache->u16InterceptRdCRx & RT_BIT(4));
1691	}
1692	}
1693	else
1694	pVmcb->ctrl.u16InterceptRdCRx \|= RT_BIT(4);
1695
1696	/* CR4 writes are always intercepted (both guest, nested-guest) for tracking PGM mode changes. */
1697	Assert(pVmcb->ctrl.u16InterceptWrCRx & RT_BIT(4));
1698
1699	/* Update VMCB with the shadow CR4 the appropriate VMCB clean bits. */
1700	Assert(!RT_HI_U32(uShadowCr4));
1701	pVmcb->guest.u64CR4 = uShadowCr4;
1702	pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_CRX_EFER \| HMSVM_VMCB_CLEAN_INTERCEPTS);
1703
1704	return VINF_SUCCESS;
1705	}
1706
1707
1708	/**
1709	* Exports the guest (or nested-guest) control registers into the VMCB.
1710	*
1711	* @returns VBox status code.
1712	* @param pVCpu The cross context virtual CPU structure.
1713	* @param pVmcb Pointer to the VM control block.
1714	*
1715	* @remarks No-long-jump zone!!!
1716	*/
1717	static int hmR0SvmExportGuestControlRegs(PVMCPU pVCpu, PSVMVMCB pVmcb)
1718	{
1719	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1720
1721	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_CR_MASK)
1722	{
1723	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_CR0)
1724	hmR0SvmExportGuestCR0(pVCpu, pVmcb);
1725
1726	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_CR2)
1727	{
1728	pVmcb->guest.u64CR2 = pVCpu->cpum.GstCtx.cr2;
1729	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CR2;
1730	}
1731
1732	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_CR3)
1733	hmR0SvmExportGuestCR3(pVCpu, pVmcb);
1734
1735	/* CR4 re-loading is ASSUMED to be done everytime we get in from ring-3! (XCR0) */
1736	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_CR4)
1737	{
1738	int rc = hmR0SvmExportGuestCR4(pVCpu, pVmcb);
1739	if (RT_FAILURE(rc))
1740	return rc;
1741	}
1742
1743	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_GUEST_CR_MASK;
1744	}
1745	return VINF_SUCCESS;
1746	}
1747
1748
1749	/**
1750	* Exports the guest (or nested-guest) segment registers into the VMCB.
1751	*
1752	* @returns VBox status code.
1753	* @param pVCpu The cross context virtual CPU structure.
1754	* @param pVmcb Pointer to the VM control block.
1755	*
1756	* @remarks No-long-jump zone!!!
1757	*/
1758	static void hmR0SvmExportGuestSegmentRegs(PVMCPU pVCpu, PSVMVMCB pVmcb)
1759	{
1760	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1761	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1762
1763	/* Guest segment registers. */
1764	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SREG_MASK)
1765	{
1766	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_CS)
1767	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, CS, cs);
1768
1769	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SS)
1770	{
1771	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, SS, ss);
1772	pVmcb->guest.u8CPL = pCtx->ss.Attr.n.u2Dpl;
1773	}
1774
1775	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_DS)
1776	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, DS, ds);
1777
1778	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_ES)
1779	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, ES, es);
1780
1781	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_FS)
1782	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, FS, fs);
1783
1784	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_GS)
1785	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, GS, gs);
1786
1787	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
1788	}
1789
1790	/* Guest TR. */
1791	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_TR)
1792	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, TR, tr);
1793
1794	/* Guest LDTR. */
1795	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_LDTR)
1796	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, LDTR, ldtr);
1797
1798	/* Guest GDTR. */
1799	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_GDTR)
1800	{
1801	pVmcb->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
1802	pVmcb->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
1803	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1804	}
1805
1806	/* Guest IDTR. */
1807	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_IDTR)
1808	{
1809	pVmcb->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
1810	pVmcb->guest.IDTR.u64Base = pCtx->idtr.pIdt;
1811	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1812	}
1813
1814	pVCpu->hm.s.fCtxChanged &= ~( HM_CHANGED_GUEST_SREG_MASK
1815	\| HM_CHANGED_GUEST_TABLE_MASK);
1816	}
1817
1818
1819	/**
1820	* Exports the guest (or nested-guest) MSRs into the VMCB.
1821	*
1822	* @param pVCpu The cross context virtual CPU structure.
1823	* @param pVmcb Pointer to the VM control block.
1824	*
1825	* @remarks No-long-jump zone!!!
1826	*/
1827	static void hmR0SvmExportGuestMsrs(PVMCPU pVCpu, PSVMVMCB pVmcb)
1828	{
1829	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1830	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1831
1832	/* Guest Sysenter MSRs. */
1833	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SYSENTER_MSR_MASK)
1834	{
1835	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SYSENTER_CS_MSR)
1836	pVmcb->guest.u64SysEnterCS = pCtx->SysEnter.cs;
1837
1838	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SYSENTER_EIP_MSR)
1839	pVmcb->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
1840
1841	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SYSENTER_ESP_MSR)
1842	pVmcb->guest.u64SysEnterESP = pCtx->SysEnter.esp;
1843	}
1844
1845	/*
1846	* Guest EFER MSR.
1847	* AMD-V requires guest EFER.SVME to be set. Weird.
1848	* See AMD spec. 15.5.1 "Basic Operation" \| "Canonicalization and Consistency Checks".
1849	*/
1850	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_EFER_MSR)
1851	{
1852	pVmcb->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
1853	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1854	}
1855
1856	/* If the guest isn't in 64-bit mode, clear MSR_K6_LME bit, otherwise SVM expects amd64 shadow paging. */
1857	if ( !CPUMIsGuestInLongModeEx(pCtx)
1858	&& (pCtx->msrEFER & MSR_K6_EFER_LME))
1859	{
1860	pVmcb->guest.u64EFER &= ~MSR_K6_EFER_LME;
1861	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1862	}
1863
1864	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_SYSCALL_MSRS)
1865	{
1866	pVmcb->guest.u64STAR = pCtx->msrSTAR;
1867	pVmcb->guest.u64LSTAR = pCtx->msrLSTAR;
1868	pVmcb->guest.u64CSTAR = pCtx->msrCSTAR;
1869	pVmcb->guest.u64SFMASK = pCtx->msrSFMASK;
1870	}
1871
1872	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_KERNEL_GS_BASE)
1873	pVmcb->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE;
1874
1875	pVCpu->hm.s.fCtxChanged &= ~( HM_CHANGED_GUEST_SYSENTER_MSR_MASK
1876	\| HM_CHANGED_GUEST_EFER_MSR
1877	\| HM_CHANGED_GUEST_SYSCALL_MSRS
1878	\| HM_CHANGED_GUEST_KERNEL_GS_BASE);
1879
1880	/*
1881	* Setup the PAT MSR (applicable for Nested Paging only).
1882	*
1883	* While guests can modify and see the modified values through the shadow values,
1884	* we shall not honor any guest modifications of this MSR to ensure caching is always
1885	* enabled similar to how we clear CR0.CD and NW bits.
1886	*
1887	* For nested-guests this needs to always be set as well, see @bugref{7243#c109}.
1888	*/
1889	pVmcb->guest.u64PAT = MSR_IA32_CR_PAT_INIT_VAL;
1890
1891	/* Enable the last branch record bit if LBR virtualization is enabled. */
1892	if (pVmcb->ctrl.LbrVirt.n.u1LbrVirt)
1893	pVmcb->guest.u64DBGCTL = MSR_IA32_DEBUGCTL_LBR;
1894	}
1895
1896
1897	/**
1898	* Exports the guest (or nested-guest) debug state into the VMCB and programs
1899	* the necessary intercepts accordingly.
1900	*
1901	* @param pVCpu The cross context virtual CPU structure.
1902	* @param pVmcb Pointer to the VM control block.
1903	*
1904	* @remarks No-long-jump zone!!!
1905	* @remarks Requires EFLAGS to be up-to-date in the VMCB!
1906	*/
1907	static void hmR0SvmExportSharedDebugState(PVMCPU pVCpu, PSVMVMCB pVmcb)
1908	{
1909	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1910
1911	/*
1912	* Anyone single stepping on the host side? If so, we'll have to use the
1913	* trap flag in the guest EFLAGS since AMD-V doesn't have a trap flag on
1914	* the VMM level like the VT-x implementations does.
1915	*/
1916	bool fInterceptMovDRx = false;
1917	bool const fStepping = pVCpu->hm.s.fSingleInstruction \|\| DBGFIsStepping(pVCpu);
1918	if (fStepping)
1919	{
1920	pVCpu->hm.s.fClearTrapFlag = true;
1921	pVmcb->guest.u64RFlags \|= X86_EFL_TF;
1922	fInterceptMovDRx = true; /* Need clean DR6, no guest mess. */
1923	}
1924
1925	if ( fStepping
1926	\|\| (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
1927	{
1928	/*
1929	* Use the combined guest and host DRx values found in the hypervisor
1930	* register set because the debugger has breakpoints active or someone
1931	* is single stepping on the host side.
1932	*
1933	* Note! DBGF expects a clean DR6 state before executing guest code.
1934	*/
1935	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1936	if ( CPUMIsGuestInLongModeEx(pCtx)
1937	&& !CPUMIsHyperDebugStateActivePending(pVCpu))
1938	{
1939	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1940	Assert(!CPUMIsGuestDebugStateActivePending(pVCpu));
1941	Assert(CPUMIsHyperDebugStateActivePending(pVCpu));
1942	}
1943	else
1944	#endif
1945	if (!CPUMIsHyperDebugStateActive(pVCpu))
1946	{
1947	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1948	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
1949	Assert(CPUMIsHyperDebugStateActive(pVCpu));
1950	}
1951
1952	/* Update DR6 & DR7. (The other DRx values are handled by CPUM one way or the other.) */
1953	if ( pVmcb->guest.u64DR6 != X86_DR6_INIT_VAL
1954	\|\| pVmcb->guest.u64DR7 != CPUMGetHyperDR7(pVCpu))
1955	{
1956	pVmcb->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
1957	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
1958	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1959	}
1960
1961	/** @todo If we cared, we could optimize to allow the guest to read registers
1962	* with the same values. */
1963	fInterceptMovDRx = true;
1964	pVCpu->hm.s.fUsingHyperDR7 = true;
1965	Log5(("hmR0SvmExportSharedDebugState: Loaded hyper DRx\n"));
1966	}
1967	else
1968	{
1969	/*
1970	* Update DR6, DR7 with the guest values if necessary.
1971	*/
1972	if ( pVmcb->guest.u64DR7 != pCtx->dr[7]
1973	\|\| pVmcb->guest.u64DR6 != pCtx->dr[6])
1974	{
1975	pVmcb->guest.u64DR7 = pCtx->dr[7];
1976	pVmcb->guest.u64DR6 = pCtx->dr[6];
1977	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1978	}
1979	pVCpu->hm.s.fUsingHyperDR7 = false;
1980
1981	/*
1982	* If the guest has enabled debug registers, we need to load them prior to
1983	* executing guest code so they'll trigger at the right time.
1984	*/
1985	if (pCtx->dr[7] & (X86_DR7_ENABLED_MASK \| X86_DR7_GD)) /** @todo Why GD? */
1986	{
1987	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1988	if ( CPUMIsGuestInLongModeEx(pCtx)
1989	&& !CPUMIsGuestDebugStateActivePending(pVCpu))
1990	{
1991	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1992	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1993	Assert(!CPUMIsHyperDebugStateActivePending(pVCpu));
1994	Assert(CPUMIsGuestDebugStateActivePending(pVCpu));
1995	}
1996	else
1997	#endif
1998	if (!CPUMIsGuestDebugStateActive(pVCpu))
1999	{
2000	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
2001	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
2002	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
2003	Assert(CPUMIsGuestDebugStateActive(pVCpu));
2004	}
2005	Log5(("hmR0SvmExportSharedDebugState: Loaded guest DRx\n"));
2006	}
2007	/*
2008	* If no debugging enabled, we'll lazy load DR0-3. We don't need to
2009	* intercept #DB as DR6 is updated in the VMCB.
2010	*
2011	* Note! If we cared and dared, we could skip intercepting \#DB here.
2012	* However, \#DB shouldn't be performance critical, so we'll play safe
2013	* and keep the code similar to the VT-x code and always intercept it.
2014	*/
2015	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
2016	else if ( !CPUMIsGuestDebugStateActivePending(pVCpu)
2017	&& !CPUMIsGuestDebugStateActive(pVCpu))
2018	#else
2019	else if (!CPUMIsGuestDebugStateActive(pVCpu))
2020	#endif
2021	{
2022	fInterceptMovDRx = true;
2023	}
2024	}
2025
2026	Assert(pVmcb->ctrl.u32InterceptXcpt & RT_BIT_32(X86_XCPT_DB));
2027	if (fInterceptMovDRx)
2028	{
2029	if ( pVmcb->ctrl.u16InterceptRdDRx != 0xffff
2030	\|\| pVmcb->ctrl.u16InterceptWrDRx != 0xffff)
2031	{
2032	pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
2033	pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
2034	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2035	}
2036	}
2037	else
2038	{
2039	if ( pVmcb->ctrl.u16InterceptRdDRx
2040	\|\| pVmcb->ctrl.u16InterceptWrDRx)
2041	{
2042	pVmcb->ctrl.u16InterceptRdDRx = 0;
2043	pVmcb->ctrl.u16InterceptWrDRx = 0;
2044	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2045	}
2046	}
2047	Log4Func(("DR6=%#RX64 DR7=%#RX64\n", pCtx->dr[6], pCtx->dr[7]));
2048	}
2049
2050	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
2051	/**
2052	* Exports the nested-guest hardware virtualization state into the nested-guest
2053	* VMCB.
2054	*
2055	* @param pVCpu The cross context virtual CPU structure.
2056	* @param pVmcbNstGst Pointer to the nested-guest VM control block.
2057	*
2058	* @remarks No-long-jump zone!!!
2059	*/
2060	static void hmR0SvmExportGuestHwvirtStateNested(PVMCPU pVCpu, PSVMVMCB pVmcbNstGst)
2061	{
2062	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2063
2064	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_HWVIRT)
2065	{
2066	/*
2067	* Ensure the nested-guest pause-filter counters don't exceed the outer guest values esp.
2068	* since SVM doesn't have a preemption timer.
2069	*
2070	* We do this here rather than in hmR0SvmSetupVmcbNested() as we may have been executing the
2071	* nested-guest in IEM incl. PAUSE instructions which would update the pause-filter counters
2072	* and may continue execution in SVM R0 without a nested-guest #VMEXIT in between.
2073	*/
2074	PVM pVM = pVCpu->CTX_SUFF(pVM);
2075	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2076	uint16_t const uGuestPauseFilterCount = pVM->hm.s.svm.cPauseFilter;
2077	uint16_t const uGuestPauseFilterThreshold = pVM->hm.s.svm.cPauseFilterThresholdTicks;
2078	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_PAUSE))
2079	{
2080	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
2081	pVmcbNstGstCtrl->u16PauseFilterCount = RT_MIN(pCtx->hwvirt.svm.cPauseFilter, uGuestPauseFilterCount);
2082	pVmcbNstGstCtrl->u16PauseFilterThreshold = RT_MIN(pCtx->hwvirt.svm.cPauseFilterThreshold, uGuestPauseFilterThreshold);
2083	pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2084	}
2085	else
2086	{
2087	pVmcbNstGstCtrl->u16PauseFilterCount = uGuestPauseFilterCount;
2088	pVmcbNstGstCtrl->u16PauseFilterThreshold = uGuestPauseFilterThreshold;
2089	}
2090
2091	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_GUEST_HWVIRT;
2092	}
2093	}
2094	#endif
2095
2096	/**
2097	* Exports the guest APIC TPR state into the VMCB.
2098	*
2099	* @returns VBox status code.
2100	* @param pVCpu The cross context virtual CPU structure.
2101	* @param pVmcb Pointer to the VM control block.
2102	*/
2103	static int hmR0SvmExportGuestApicTpr(PVMCPU pVCpu, PSVMVMCB pVmcb)
2104	{
2105	if (ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged) & HM_CHANGED_GUEST_APIC_TPR)
2106	{
2107	PVM pVM = pVCpu->CTX_SUFF(pVM);
2108	if ( PDMHasApic(pVM)
2109	&& APICIsEnabled(pVCpu))
2110	{
2111	bool fPendingIntr;
2112	uint8_t u8Tpr;
2113	int rc = APICGetTpr(pVCpu, &u8Tpr, &fPendingIntr, NULL /* pu8PendingIrq */);
2114	AssertRCReturn(rc, rc);
2115
2116	/* Assume that we need to trap all TPR accesses and thus need not check on
2117	every #VMEXIT if we should update the TPR. */
2118	Assert(pVmcb->ctrl.IntCtrl.n.u1VIntrMasking);
2119	pVCpu->hm.s.svm.fSyncVTpr = false;
2120
2121	if (!pVM->hm.s.fTPRPatchingActive)
2122	{
2123	/* Bits 3-0 of the VTPR field correspond to bits 7-4 of the TPR (which is the Task-Priority Class). */
2124	pVmcb->ctrl.IntCtrl.n.u8VTPR = (u8Tpr >> 4);
2125
2126	/* If there are interrupts pending, intercept CR8 writes to evaluate ASAP if we
2127	can deliver the interrupt to the guest. */
2128	if (fPendingIntr)
2129	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
2130	else
2131	{
2132	pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
2133	pVCpu->hm.s.svm.fSyncVTpr = true;
2134	}
2135
2136	pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_INT_CTRL);
2137	}
2138	else
2139	{
2140	/* 32-bit guests uses LSTAR MSR for patching guest code which touches the TPR. */
2141	pVmcb->guest.u64LSTAR = u8Tpr;
2142	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
2143
2144	/* If there are interrupts pending, intercept LSTAR writes, otherwise don't intercept reads or writes. */
2145	if (fPendingIntr)
2146	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_INTERCEPT_WRITE);
2147	else
2148	{
2149	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
2150	pVCpu->hm.s.svm.fSyncVTpr = true;
2151	}
2152	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
2153	}
2154	}
2155	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_GUEST_APIC_TPR);
2156	}
2157	return VINF_SUCCESS;
2158	}
2159
2160
2161	/**
2162	* Sets up the exception interrupts required for guest (or nested-guest)
2163	* execution in the VMCB.
2164	*
2165	* @param pVCpu The cross context virtual CPU structure.
2166	* @param pVmcb Pointer to the VM control block.
2167	*
2168	* @remarks No-long-jump zone!!!
2169	*/
2170	static void hmR0SvmExportGuestXcptIntercepts(PVMCPU pVCpu, PSVMVMCB pVmcb)
2171	{
2172	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2173
2174	/* If we modify intercepts from here, please check & adjust hmR0SvmMergeVmcbCtrlsNested() if required. */
2175	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_SVM_GUEST_XCPT_INTERCEPTS)
2176	{
2177	/* Trap #UD for GIM provider (e.g. for hypercalls). */
2178	if (pVCpu->hm.s.fGIMTrapXcptUD)
2179	hmR0SvmSetXcptIntercept(pVmcb, X86_XCPT_UD);
2180	else
2181	hmR0SvmClearXcptIntercept(pVCpu, pVmcb, X86_XCPT_UD);
2182
2183	/* Trap #BP for INT3 debug breakpoints set by the VM debugger. */
2184	if (pVCpu->CTX_SUFF(pVM)->dbgf.ro.cEnabledInt3Breakpoints)
2185	hmR0SvmSetXcptIntercept(pVmcb, X86_XCPT_BP);
2186	else
2187	hmR0SvmClearXcptIntercept(pVCpu, pVmcb, X86_XCPT_BP);
2188
2189	/* The remaining intercepts are handled elsewhere, e.g. in hmR0SvmExportGuestCR0(). */
2190	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_SVM_GUEST_XCPT_INTERCEPTS;
2191	}
2192	}
2193
2194
2195	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
2196	/**
2197	* Merges guest and nested-guest intercepts for executing the nested-guest using
2198	* hardware-assisted SVM.
2199	*
2200	* This merges the guest and nested-guest intercepts in a way that if the outer
2201	* guest intercept is set we need to intercept it in the nested-guest as
2202	* well.
2203	*
2204	* @param pVCpu The cross context virtual CPU structure.
2205	* @param pVmcbNstGst Pointer to the nested-guest VM control block.
2206	*/
2207	static void hmR0SvmMergeVmcbCtrlsNested(PVMCPU pVCpu)
2208	{
2209	PVM pVM = pVCpu->CTX_SUFF(pVM);
2210	PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
2211	PSVMVMCB pVmcbNstGst = pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pVmcb);
2212	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2213
2214	/* Merge the guest's CR intercepts into the nested-guest VMCB. */
2215	pVmcbNstGstCtrl->u16InterceptRdCRx \|= pVmcb->ctrl.u16InterceptRdCRx;
2216	pVmcbNstGstCtrl->u16InterceptWrCRx \|= pVmcb->ctrl.u16InterceptWrCRx;
2217
2218	/* Always intercept CR4 writes for tracking PGM mode changes. */
2219	pVmcbNstGstCtrl->u16InterceptWrCRx \|= RT_BIT(4);
2220
2221	/* Without nested paging, intercept CR3 reads and writes as we load shadow page tables. */
2222	if (!pVM->hm.s.fNestedPaging)
2223	{
2224	pVmcbNstGstCtrl->u16InterceptRdCRx \|= RT_BIT(3);
2225	pVmcbNstGstCtrl->u16InterceptWrCRx \|= RT_BIT(3);
2226	}
2227
2228	/** @todo Figure out debugging with nested-guests, till then just intercept
2229	* all DR[0-15] accesses. */
2230	pVmcbNstGstCtrl->u16InterceptRdDRx \|= 0xffff;
2231	pVmcbNstGstCtrl->u16InterceptWrDRx \|= 0xffff;
2232
2233	/*
2234	* Merge the guest's exception intercepts into the nested-guest VMCB.
2235	*
2236	* - \#UD: Exclude these as the outer guest's GIM hypercalls are not applicable
2237	* while executing the nested-guest.
2238	*
2239	* - \#BP: Exclude breakpoints set by the VM debugger for the outer guest. This can
2240	* be tweaked later depending on how we wish to implement breakpoints.
2241	*
2242	* Warning!! This ASSUMES we only intercept \#UD for hypercall purposes and \#BP
2243	* for VM debugger breakpoints, see hmR0SvmExportGuestXcptIntercepts().
2244	*/
2245	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
2246	pVmcbNstGstCtrl->u32InterceptXcpt \|= (pVmcb->ctrl.u32InterceptXcpt & ~( RT_BIT(X86_XCPT_UD)
2247	\| RT_BIT(X86_XCPT_BP)));
2248	#else
2249	pVmcbNstGstCtrl->u32InterceptXcpt \|= pVmcb->ctrl.u32InterceptXcpt;
2250	#endif
2251
2252	/*
2253	* Adjust intercepts while executing the nested-guest that differ from the
2254	* outer guest intercepts.
2255	*
2256	* - VINTR: Exclude the outer guest intercept as we don't need to cause VINTR #VMEXITs
2257	* that belong to the nested-guest to the outer guest.
2258	*
2259	* - VMMCALL: Exclude the outer guest intercept as when it's also not intercepted by
2260	* the nested-guest, the physical CPU raises a \#UD exception as expected.
2261	*/
2262	pVmcbNstGstCtrl->u64InterceptCtrl \|= (pVmcb->ctrl.u64InterceptCtrl & ~( SVM_CTRL_INTERCEPT_VINTR
2263	\| SVM_CTRL_INTERCEPT_VMMCALL))
2264	\| HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS;
2265
2266	Assert( (pVmcbNstGstCtrl->u64InterceptCtrl & HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS)
2267	== HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS);
2268
2269	/* Finally, update the VMCB clean bits. */
2270	pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2271	}
2272	#endif
2273
2274
2275	/**
2276	* Selects the appropriate function to run guest code.
2277	*
2278	* @returns VBox status code.
2279	* @param pVCpu The cross context virtual CPU structure.
2280	*
2281	* @remarks No-long-jump zone!!!
2282	*/
2283	static int hmR0SvmSelectVMRunHandler(PVMCPU pVCpu)
2284	{
2285	if (CPUMIsGuestInLongMode(pVCpu))
2286	{
2287	#ifndef VBOX_ENABLE_64_BITS_GUESTS
2288	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
2289	#endif
2290	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fAllow64BitGuests); /* Guaranteed by hmR3InitFinalizeR0(). */
2291	#if HC_ARCH_BITS == 32
2292	/* 32-bit host. We need to switch to 64-bit before running the 64-bit guest. */
2293	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
2294	#else
2295	/* 64-bit host or hybrid host. */
2296	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun64;
2297	#endif
2298	}
2299	else
2300	{
2301	/* Guest is not in long mode, use the 32-bit handler. */
2302	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun;
2303	}
2304	return VINF_SUCCESS;
2305	}
2306
2307
2308	/**
2309	* Enters the AMD-V session.
2310	*
2311	* @returns VBox status code.
2312	* @param pVCpu The cross context virtual CPU structure.
2313	* @param pHostCpu Pointer to the CPU info struct.
2314	*/
2315	VMMR0DECL(int) SVMR0Enter(PVMCPU pVCpu, PHMGLOBALCPUINFO pHostCpu)
2316	{
2317	AssertPtr(pVCpu);
2318	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.svm.fSupported);
2319	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2320	RT_NOREF(pHostCpu);
2321
2322	LogFlowFunc(("pVCpu=%p\n", pVCpu));
2323	Assert((pVCpu->hm.s.fCtxChanged & (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE))
2324	== (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE));
2325
2326	pVCpu->hm.s.fLeaveDone = false;
2327	return VINF_SUCCESS;
2328	}
2329
2330
2331	/**
2332	* Thread-context callback for AMD-V.
2333	*
2334	* @param enmEvent The thread-context event.
2335	* @param pVCpu The cross context virtual CPU structure.
2336	* @param fGlobalInit Whether global VT-x/AMD-V init. is used.
2337	* @thread EMT(pVCpu)
2338	*/
2339	VMMR0DECL(void) SVMR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPU pVCpu, bool fGlobalInit)
2340	{
2341	NOREF(fGlobalInit);
2342
2343	switch (enmEvent)
2344	{
2345	case RTTHREADCTXEVENT_OUT:
2346	{
2347	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2348	Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
2349	VMCPU_ASSERT_EMT(pVCpu);
2350
2351	/* No longjmps (log-flush, locks) in this fragile context. */
2352	VMMRZCallRing3Disable(pVCpu);
2353
2354	if (!pVCpu->hm.s.fLeaveDone)
2355	{
2356	hmR0SvmLeave(pVCpu, false /* fImportState */);
2357	pVCpu->hm.s.fLeaveDone = true;
2358	}
2359
2360	/* Leave HM context, takes care of local init (term). */
2361	int rc = HMR0LeaveCpu(pVCpu);
2362	AssertRC(rc); NOREF(rc);
2363
2364	/* Restore longjmp state. */
2365	VMMRZCallRing3Enable(pVCpu);
2366	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatSwitchPreempt);
2367	break;
2368	}
2369
2370	case RTTHREADCTXEVENT_IN:
2371	{
2372	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2373	Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
2374	VMCPU_ASSERT_EMT(pVCpu);
2375
2376	/* No longjmps (log-flush, locks) in this fragile context. */
2377	VMMRZCallRing3Disable(pVCpu);
2378
2379	/*
2380	* Initialize the bare minimum state required for HM. This takes care of
2381	* initializing AMD-V if necessary (onlined CPUs, local init etc.)
2382	*/
2383	int rc = hmR0EnterCpu(pVCpu);
2384	AssertRC(rc); NOREF(rc);
2385	Assert((pVCpu->hm.s.fCtxChanged & (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE))
2386	== (HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE));
2387
2388	pVCpu->hm.s.fLeaveDone = false;
2389
2390	/* Restore longjmp state. */
2391	VMMRZCallRing3Enable(pVCpu);
2392	break;
2393	}
2394
2395	default:
2396	break;
2397	}
2398	}
2399
2400
2401	/**
2402	* Saves the host state.
2403	*
2404	* @returns VBox status code.
2405	* @param pVCpu The cross context virtual CPU structure.
2406	*
2407	* @remarks No-long-jump zone!!!
2408	*/
2409	VMMR0DECL(int) SVMR0ExportHostState(PVMCPU pVCpu)
2410	{
2411	NOREF(pVCpu);
2412
2413	/* Nothing to do here. AMD-V does this for us automatically during the world-switch. */
2414	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~HM_CHANGED_HOST_CONTEXT);
2415	return VINF_SUCCESS;
2416	}
2417
2418
2419	/**
2420	* Exports the guest state from the guest-CPU context into the VMCB.
2421	*
2422	* The CPU state will be loaded from these fields on every successful VM-entry.
2423	* Also sets up the appropriate VMRUN function to execute guest code based on
2424	* the guest CPU mode.
2425	*
2426	* @returns VBox status code.
2427	* @param pVCpu The cross context virtual CPU structure.
2428	*
2429	* @remarks No-long-jump zone!!!
2430	*/
2431	static int hmR0SvmExportGuestState(PVMCPU pVCpu)
2432	{
2433	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExportGuestState, x);
2434
2435	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
2436	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
2437
2438	Assert(pVmcb);
2439	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
2440
2441	pVmcb->guest.u64RIP = pCtx->rip;
2442	pVmcb->guest.u64RSP = pCtx->rsp;
2443	pVmcb->guest.u64RFlags = pCtx->eflags.u32;
2444	pVmcb->guest.u64RAX = pCtx->rax;
2445	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
2446	if (pVmcb->ctrl.IntCtrl.n.u1VGifEnable)
2447	{
2448	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VGIF);
2449	pVmcb->ctrl.IntCtrl.n.u1VGif = pCtx->hwvirt.fGif;
2450	}
2451	#endif
2452
2453	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
2454
2455	int rc = hmR0SvmExportGuestControlRegs(pVCpu, pVmcb);
2456	AssertRCReturnStmt(rc, ASMSetFlags(fEFlags), rc);
2457
2458	hmR0SvmExportGuestSegmentRegs(pVCpu, pVmcb);
2459	hmR0SvmExportGuestMsrs(pVCpu, pVmcb);
2460	hmR0SvmExportGuestXcptIntercepts(pVCpu, pVmcb);
2461
2462	ASMSetFlags(fEFlags);
2463
2464	/* hmR0SvmExportGuestApicTpr() must be called -after- hmR0SvmExportGuestMsrs() as we
2465	otherwise we would overwrite the LSTAR MSR that we use for TPR patching. */
2466	hmR0SvmExportGuestApicTpr(pVCpu, pVmcb);
2467
2468	rc = hmR0SvmSelectVMRunHandler(pVCpu);
2469	AssertRCReturn(rc, rc);
2470
2471	/* Clear any bits that may be set but exported unconditionally or unused/reserved bits. */
2472	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~( HM_CHANGED_GUEST_RIP
2473	\| HM_CHANGED_GUEST_RFLAGS
2474	\| HM_CHANGED_GUEST_GPRS_MASK
2475	\| HM_CHANGED_GUEST_X87
2476	\| HM_CHANGED_GUEST_SSE_AVX
2477	\| HM_CHANGED_GUEST_OTHER_XSAVE
2478	\| HM_CHANGED_GUEST_XCRx
2479	\| HM_CHANGED_GUEST_TSC_AUX
2480	\| HM_CHANGED_GUEST_OTHER_MSRS
2481	\| HM_CHANGED_GUEST_HWVIRT
2482	\| (HM_CHANGED_KEEPER_STATE_MASK & ~HM_CHANGED_SVM_GUEST_XCPT_INTERCEPTS)));
2483
2484	#ifdef VBOX_STRICT
2485	/*
2486	* All of the guest-CPU state and SVM keeper bits should be exported here by now,
2487	* except for the host-context and/or shared host-guest context bits.
2488	*/
2489	uint64_t const fCtxChanged = ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged);
2490	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2491	AssertMsg(!(fCtxChanged & (HM_CHANGED_ALL_GUEST & ~HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE)),
2492	("fCtxChanged=%#RX64\n", fCtxChanged));
2493
2494	/*
2495	* If we need to log state that isn't always imported, we'll need to import them here.
2496	* See hmR0SvmPostRunGuest() for which part of the state is imported uncondtionally.
2497	*/
2498	hmR0SvmLogState(pVCpu, pVmcb, "hmR0SvmExportGuestState", 0 /* fFlags /, 0 / uVerbose */);
2499	#endif
2500
2501	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExportGuestState, x);
2502	return VINF_SUCCESS;
2503	}
2504
2505
2506	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
2507	/**
2508	* Merges the guest and nested-guest MSR permission bitmap.
2509	*
2510	* If the guest is intercepting an MSR we need to intercept it regardless of
2511	* whether the nested-guest is intercepting it or not.
2512	*
2513	* @param pHostCpu Pointer to the physical CPU HM info. struct.
2514	* @param pVCpu The cross context virtual CPU structure.
2515	*
2516	* @remarks No-long-jmp zone!!!
2517	*/
2518	DECLINLINE(void) hmR0SvmMergeMsrpmNested(PHMGLOBALCPUINFO pHostCpu, PVMCPU pVCpu)
2519	{
2520	uint64_t const pu64GstMsrpm = (uint64_t const )pVCpu->hm.s.svm.pvMsrBitmap;
2521	uint64_t const pu64NstGstMsrpm = (uint64_t const )pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pvMsrBitmap);
2522	uint64_t pu64DstMsrpm = (uint64_t )pHostCpu->n.svm.pvNstGstMsrpm;
2523
2524	/* MSRPM bytes from offset 0x1800 are reserved, so we stop merging there. */
2525	uint32_t const offRsvdQwords = 0x1800 >> 3;
2526	for (uint32_t i = 0; i < offRsvdQwords; i++)
2527	pu64DstMsrpm[i] = pu64NstGstMsrpm[i] \| pu64GstMsrpm[i];
2528	}
2529
2530
2531	/**
2532	* Caches the nested-guest VMCB fields before we modify them for execution using
2533	* hardware-assisted SVM.
2534	*
2535	* @returns true if the VMCB was previously already cached, false otherwise.
2536	* @param pVCpu The cross context virtual CPU structure.
2537	*
2538	* @sa HMSvmNstGstVmExitNotify.
2539	*/
2540	static bool hmR0SvmCacheVmcbNested(PVMCPU pVCpu)
2541	{
2542	/*
2543	* Cache the nested-guest programmed VMCB fields if we have not cached it yet.
2544	* Otherwise we risk re-caching the values we may have modified, see @bugref{7243#c44}.
2545	*
2546	* Nested-paging CR3 is not saved back into the VMCB on #VMEXIT, hence no need to
2547	* cache and restore it, see AMD spec. 15.25.4 "Nested Paging and VMRUN/#VMEXIT".
2548	*/
2549	PSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
2550	bool const fWasCached = pVmcbNstGstCache->fCacheValid;
2551	if (!fWasCached)
2552	{
2553	PCSVMVMCB pVmcbNstGst = pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pVmcb);
2554	PCSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2555	pVmcbNstGstCache->u16InterceptRdCRx = pVmcbNstGstCtrl->u16InterceptRdCRx;
2556	pVmcbNstGstCache->u16InterceptWrCRx = pVmcbNstGstCtrl->u16InterceptWrCRx;
2557	pVmcbNstGstCache->u16InterceptRdDRx = pVmcbNstGstCtrl->u16InterceptRdDRx;
2558	pVmcbNstGstCache->u16InterceptWrDRx = pVmcbNstGstCtrl->u16InterceptWrDRx;
2559	pVmcbNstGstCache->u16PauseFilterThreshold = pVmcbNstGstCtrl->u16PauseFilterThreshold;
2560	pVmcbNstGstCache->u16PauseFilterCount = pVmcbNstGstCtrl->u16PauseFilterCount;
2561	pVmcbNstGstCache->u32InterceptXcpt = pVmcbNstGstCtrl->u32InterceptXcpt;
2562	pVmcbNstGstCache->u64InterceptCtrl = pVmcbNstGstCtrl->u64InterceptCtrl;
2563	pVmcbNstGstCache->u64TSCOffset = pVmcbNstGstCtrl->u64TSCOffset;
2564	pVmcbNstGstCache->fVIntrMasking = pVmcbNstGstCtrl->IntCtrl.n.u1VIntrMasking;
2565	pVmcbNstGstCache->fNestedPaging = pVmcbNstGstCtrl->NestedPagingCtrl.n.u1NestedPaging;
2566	pVmcbNstGstCache->fLbrVirt = pVmcbNstGstCtrl->LbrVirt.n.u1LbrVirt;
2567	pVmcbNstGstCache->fCacheValid = true;
2568	Log4Func(("Cached VMCB fields\n"));
2569	}
2570
2571	return fWasCached;
2572	}
2573
2574
2575	/**
2576	* Sets up the nested-guest VMCB for execution using hardware-assisted SVM.
2577	*
2578	* This is done the first time we enter nested-guest execution using SVM R0
2579	* until the nested-guest \#VMEXIT (not to be confused with physical CPU
2580	* \#VMEXITs which may or may not cause a corresponding nested-guest \#VMEXIT).
2581	*
2582	* @param pVCpu The cross context virtual CPU structure.
2583	*/
2584	static void hmR0SvmSetupVmcbNested(PVMCPU pVCpu)
2585	{
2586	PSVMVMCB pVmcbNstGst = pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pVmcb);
2587	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2588
2589	/*
2590	* First cache the nested-guest VMCB fields we may potentially modify.
2591	*/
2592	bool const fVmcbCached = hmR0SvmCacheVmcbNested(pVCpu);
2593	if (!fVmcbCached)
2594	{
2595	/*
2596	* The IOPM of the nested-guest can be ignored because the the guest always
2597	* intercepts all IO port accesses. Thus, we'll swap to the guest IOPM rather
2598	* than the nested-guest IOPM and swap the field back on the #VMEXIT.
2599	*/
2600	pVmcbNstGstCtrl->u64IOPMPhysAddr = g_HCPhysIOBitmap;
2601
2602	/*
2603	* Use the same nested-paging as the outer guest. We can't dynamically switch off
2604	* nested-paging suddenly while executing a VM (see assertion at the end of
2605	* Trap0eHandler() in PGMAllBth.h).
2606	*/
2607	pVmcbNstGstCtrl->NestedPagingCtrl.n.u1NestedPaging = pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging;
2608
2609	/* Always enable V_INTR_MASKING as we do not want to allow access to the physical APIC TPR. */
2610	pVmcbNstGstCtrl->IntCtrl.n.u1VIntrMasking = 1;
2611
2612	/*
2613	* Turn off TPR syncing on #VMEXIT for nested-guests as CR8 intercepts are subject
2614	* to the nested-guest intercepts and we always run with V_INTR_MASKING.
2615	*/
2616	pVCpu->hm.s.svm.fSyncVTpr = false;
2617
2618	#ifdef DEBUG_ramshankar
2619	/* For debugging purposes - copy the LBR info. from outer guest VMCB. */
2620	pVmcbNstGstCtrl->LbrVirt.n.u1LbrVirt = pVmcb->ctrl.LbrVirt.n.u1LbrVirt;
2621	#endif
2622
2623	/*
2624	* If we don't expose Virtualized-VMSAVE/VMLOAD feature to the outer guest, we
2625	* need to intercept VMSAVE/VMLOAD instructions executed by the nested-guest.
2626	*/
2627	if (!pVCpu->CTX_SUFF(pVM)->cpum.ro.GuestFeatures.fSvmVirtVmsaveVmload)
2628	pVmcbNstGstCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_VMSAVE
2629	\| SVM_CTRL_INTERCEPT_VMLOAD;
2630
2631	/*
2632	* If we don't expose Virtual GIF feature to the outer guest, we need to intercept
2633	* CLGI/STGI instructions executed by the nested-guest.
2634	*/
2635	if (!pVCpu->CTX_SUFF(pVM)->cpum.ro.GuestFeatures.fSvmVGif)
2636	pVmcbNstGstCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_CLGI
2637	\| SVM_CTRL_INTERCEPT_STGI;
2638
2639	/* Merge the guest and nested-guest intercepts. */
2640	hmR0SvmMergeVmcbCtrlsNested(pVCpu);
2641
2642	/* Update the VMCB clean bits. */
2643	pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2644	}
2645	else
2646	{
2647	Assert(!pVCpu->hm.s.svm.fSyncVTpr);
2648	Assert(pVmcbNstGstCtrl->u64IOPMPhysAddr == g_HCPhysIOBitmap);
2649	Assert(RT_BOOL(pVmcbNstGstCtrl->NestedPagingCtrl.n.u1NestedPaging) == pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
2650	}
2651	}
2652
2653
2654	/**
2655	* Exports the nested-guest state into the VMCB.
2656	*
2657	* We need to export the entire state as we could be continuing nested-guest
2658	* execution at any point (not just immediately after VMRUN) and thus the VMCB
2659	* can be out-of-sync with the nested-guest state if it was executed in IEM.
2660	*
2661	* @returns VBox status code.
2662	* @param pVCpu The cross context virtual CPU structure.
2663	* @param pCtx Pointer to the guest-CPU context.
2664	*
2665	* @remarks No-long-jump zone!!!
2666	*/
2667	static int hmR0SvmExportGuestStateNested(PVMCPU pVCpu)
2668	{
2669	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatExportGuestState, x);
2670
2671	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
2672	PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
2673	Assert(pVmcbNstGst);
2674
2675	hmR0SvmSetupVmcbNested(pVCpu);
2676
2677	pVmcbNstGst->guest.u64RIP = pCtx->rip;
2678	pVmcbNstGst->guest.u64RSP = pCtx->rsp;
2679	pVmcbNstGst->guest.u64RFlags = pCtx->eflags.u32;
2680	pVmcbNstGst->guest.u64RAX = pCtx->rax;
2681
2682	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
2683
2684	int rc = hmR0SvmExportGuestControlRegs(pVCpu, pVmcbNstGst);
2685	AssertRCReturnStmt(rc, ASMSetFlags(fEFlags), rc);
2686
2687	hmR0SvmExportGuestSegmentRegs(pVCpu, pVmcbNstGst);
2688	hmR0SvmExportGuestMsrs(pVCpu, pVmcbNstGst);
2689	hmR0SvmExportGuestHwvirtStateNested(pVCpu, pVmcbNstGst);
2690
2691	ASMSetFlags(fEFlags);
2692
2693	/* Nested VGIF not supported yet. */
2694	Assert(!pVmcbNstGst->ctrl.IntCtrl.n.u1VGifEnable);
2695
2696	rc = hmR0SvmSelectVMRunHandler(pVCpu);
2697	AssertRCReturn(rc, rc);
2698
2699	/* Clear any bits that may be set but exported unconditionally or unused/reserved bits. */
2700	ASMAtomicUoAndU64(&pVCpu->hm.s.fCtxChanged, ~( HM_CHANGED_GUEST_RIP
2701	\| HM_CHANGED_GUEST_RFLAGS
2702	\| HM_CHANGED_GUEST_GPRS_MASK
2703	\| HM_CHANGED_GUEST_APIC_TPR
2704	\| HM_CHANGED_GUEST_X87
2705	\| HM_CHANGED_GUEST_SSE_AVX
2706	\| HM_CHANGED_GUEST_OTHER_XSAVE
2707	\| HM_CHANGED_GUEST_XCRx
2708	\| HM_CHANGED_GUEST_TSC_AUX
2709	\| HM_CHANGED_GUEST_OTHER_MSRS
2710	\| HM_CHANGED_SVM_GUEST_XCPT_INTERCEPTS
2711	\| (HM_CHANGED_KEEPER_STATE_MASK & ~HM_CHANGED_SVM_MASK)));
2712
2713	#ifdef VBOX_STRICT
2714	/*
2715	* All of the guest-CPU state and SVM keeper bits should be exported here by now, except
2716	* for the host-context and/or shared host-guest context bits.
2717	*/
2718	uint64_t const fCtxChanged = ASMAtomicUoReadU64(&pVCpu->hm.s.fCtxChanged);
2719	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
2720	AssertMsg(!(fCtxChanged & (HM_CHANGED_ALL_GUEST & ~HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE)),
2721	("fCtxChanged=%#RX64\n", fCtxChanged));
2722
2723	/*
2724	* If we need to log state that isn't always imported, we'll need to import them here.
2725	* See hmR0SvmPostRunGuest() for which part of the state is imported uncondtionally.
2726	*/
2727	hmR0SvmLogState(pVCpu, pVmcbNstGst, "hmR0SvmExportGuestStateNested", 0 /* fFlags /, 0 / uVerbose */);
2728	#endif
2729
2730	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExportGuestState, x);
2731	return rc;
2732	}
2733	#endif /* VBOX_WITH_NESTED_HWVIRT_SVM */
2734
2735
2736	/**
2737	* Exports the state shared between the host and guest (or nested-guest) into
2738	* the VMCB.
2739	*
2740	* @param pVCpu The cross context virtual CPU structure.
2741	* @param pVmcb Pointer to the VM control block.
2742	*
2743	* @remarks No-long-jump zone!!!
2744	*/
2745	static void hmR0SvmExportSharedState(PVMCPU pVCpu, PSVMVMCB pVmcb)
2746	{
2747	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2748	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2749
2750	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_GUEST_DR_MASK)
2751	{
2752	/** @todo Figure out stepping with nested-guest. */
2753	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
2754	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
2755	hmR0SvmExportSharedDebugState(pVCpu, pVmcb);
2756	else
2757	{
2758	pVmcb->guest.u64DR6 = pCtx->dr[6];
2759	pVmcb->guest.u64DR7 = pCtx->dr[7];
2760	}
2761	}
2762
2763	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_GUEST_DR_MASK;
2764	AssertMsg(!(pVCpu->hm.s.fCtxChanged & HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE),
2765	("fCtxChanged=%#RX64\n", pVCpu->hm.s.fCtxChanged));
2766	}
2767
2768
2769	/**
2770	* Worker for SVMR0ImportStateOnDemand.
2771	*
2772	* @param pVCpu The cross context virtual CPU structure.
2773	* @param fWhat What to import, CPUMCTX_EXTRN_XXX.
2774	*/
2775	static void hmR0SvmImportGuestState(PVMCPU pVCpu, uint64_t fWhat)
2776	{
2777	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatImportGuestState, x);
2778
2779	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
2780	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
2781	PCSVMVMCBSTATESAVE pVmcbGuest = &pVmcb->guest;
2782	PCSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
2783
2784	Log4Func(("fExtrn=%#RX64 fWhat=%#RX64\n", pCtx->fExtrn, fWhat));
2785
2786	/*
2787	* We disable interrupts to make the updating of the state and in particular
2788	* the fExtrn modification atomic wrt to preemption hooks.
2789	*/
2790	RTCCUINTREG const fEFlags = ASMIntDisableFlags();
2791
2792	fWhat &= pCtx->fExtrn;
2793	if (fWhat)
2794	{
2795	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
2796	if (fWhat & CPUMCTX_EXTRN_HWVIRT)
2797	{
2798	if ( !CPUMIsGuestInSvmNestedHwVirtMode(pCtx)
2799	&& pVmcbCtrl->IntCtrl.n.u1VGifEnable)
2800	{
2801	/* We don't yet support passing VGIF feature to the guest. */
2802	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.svm.fVGif);
2803	pCtx->hwvirt.fGif = pVmcbCtrl->IntCtrl.n.u1VGif;
2804	}
2805	}
2806
2807	if (fWhat & CPUMCTX_EXTRN_HM_SVM_HWVIRT_VIRQ)
2808	{
2809	if ( !pVmcbCtrl->IntCtrl.n.u1VIrqPending
2810	&& VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST))
2811	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST);
2812	}
2813	#endif
2814
2815	if (fWhat & CPUMCTX_EXTRN_HM_SVM_INT_SHADOW)
2816	{
2817	if (pVmcbCtrl->IntShadow.n.u1IntShadow)
2818	EMSetInhibitInterruptsPC(pVCpu, pVmcbGuest->u64RIP);
2819	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
2820	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
2821	}
2822
2823	if (fWhat & CPUMCTX_EXTRN_RIP)
2824	pCtx->rip = pVmcbGuest->u64RIP;
2825
2826	if (fWhat & CPUMCTX_EXTRN_RFLAGS)
2827	pCtx->eflags.u32 = pVmcbGuest->u64RFlags;
2828
2829	if (fWhat & CPUMCTX_EXTRN_RSP)
2830	pCtx->rsp = pVmcbGuest->u64RSP;
2831
2832	if (fWhat & CPUMCTX_EXTRN_RAX)
2833	pCtx->rax = pVmcbGuest->u64RAX;
2834
2835	if (fWhat & CPUMCTX_EXTRN_SREG_MASK)
2836	{
2837	if (fWhat & CPUMCTX_EXTRN_CS)
2838	{
2839	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, CS, cs);
2840	/* Correct the CS granularity bit. Haven't seen it being wrong in any other register (yet). */
2841	/** @todo SELM might need to be fixed as it too should not care about the
2842	* granularity bit. See @bugref{6785}. */
2843	if ( !pCtx->cs.Attr.n.u1Granularity
2844	&& pCtx->cs.Attr.n.u1Present
2845	&& pCtx->cs.u32Limit > UINT32_C(0xfffff))
2846	{
2847	Assert((pCtx->cs.u32Limit & 0xfff) == 0xfff);
2848	pCtx->cs.Attr.n.u1Granularity = 1;
2849	}
2850	HMSVM_ASSERT_SEG_GRANULARITY(pCtx, cs);
2851	}
2852	if (fWhat & CPUMCTX_EXTRN_SS)
2853	{
2854	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, SS, ss);
2855	HMSVM_ASSERT_SEG_GRANULARITY(pCtx, ss);
2856	/*
2857	* Sync the hidden SS DPL field. AMD CPUs have a separate CPL field in the
2858	* VMCB and uses that and thus it's possible that when the CPL changes during
2859	* guest execution that the SS DPL isn't updated by AMD-V. Observed on some
2860	* AMD Fusion CPUs with 64-bit guests.
2861	*
2862	* See AMD spec. 15.5.1 "Basic operation".
2863	*/
2864	Assert(!(pVmcbGuest->u8CPL & ~0x3));
2865	uint8_t const uCpl = pVmcbGuest->u8CPL;
2866	if (pCtx->ss.Attr.n.u2Dpl != uCpl)
2867	pCtx->ss.Attr.n.u2Dpl = uCpl & 0x3;
2868	}
2869	if (fWhat & CPUMCTX_EXTRN_DS)
2870	{
2871	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, DS, ds);
2872	HMSVM_ASSERT_SEG_GRANULARITY(pCtx, ds);
2873	}
2874	if (fWhat & CPUMCTX_EXTRN_ES)
2875	{
2876	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, ES, es);
2877	HMSVM_ASSERT_SEG_GRANULARITY(pCtx, es);
2878	}
2879	if (fWhat & CPUMCTX_EXTRN_FS)
2880	{
2881	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, FS, fs);
2882	HMSVM_ASSERT_SEG_GRANULARITY(pCtx, fs);
2883	}
2884	if (fWhat & CPUMCTX_EXTRN_GS)
2885	{
2886	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, GS, gs);
2887	HMSVM_ASSERT_SEG_GRANULARITY(pCtx, gs);
2888	}
2889	}
2890
2891	if (fWhat & CPUMCTX_EXTRN_TABLE_MASK)
2892	{
2893	if (fWhat & CPUMCTX_EXTRN_TR)
2894	{
2895	/*
2896	* Fixup TR attributes so it's compatible with Intel. Important when saved-states
2897	* are used between Intel and AMD, see @bugref{6208#c39}.
2898	* ASSUME that it's normally correct and that we're in 32-bit or 64-bit mode.
2899	*/
2900	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, TR, tr);
2901	if (pCtx->tr.Attr.n.u4Type != X86_SEL_TYPE_SYS_386_TSS_BUSY)
2902	{
2903	if ( pCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_386_TSS_AVAIL
2904	\|\| CPUMIsGuestInLongModeEx(pCtx))
2905	pCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
2906	else if (pCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_286_TSS_AVAIL)
2907	pCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_286_TSS_BUSY;
2908	}
2909	}
2910
2911	if (fWhat & CPUMCTX_EXTRN_LDTR)
2912	HMSVM_SEG_REG_COPY_FROM_VMCB(pCtx, pVmcbGuest, LDTR, ldtr);
2913
2914	if (fWhat & CPUMCTX_EXTRN_GDTR)
2915	{
2916	pCtx->gdtr.cbGdt = pVmcbGuest->GDTR.u32Limit;
2917	pCtx->gdtr.pGdt = pVmcbGuest->GDTR.u64Base;
2918	}
2919
2920	if (fWhat & CPUMCTX_EXTRN_IDTR)
2921	{
2922	pCtx->idtr.cbIdt = pVmcbGuest->IDTR.u32Limit;
2923	pCtx->idtr.pIdt = pVmcbGuest->IDTR.u64Base;
2924	}
2925	}
2926
2927	if (fWhat & CPUMCTX_EXTRN_SYSCALL_MSRS)
2928	{
2929	pCtx->msrSTAR = pVmcbGuest->u64STAR;
2930	pCtx->msrLSTAR = pVmcbGuest->u64LSTAR;
2931	pCtx->msrCSTAR = pVmcbGuest->u64CSTAR;
2932	pCtx->msrSFMASK = pVmcbGuest->u64SFMASK;
2933	}
2934
2935	if (fWhat & CPUMCTX_EXTRN_SYSENTER_MSRS)
2936	{
2937	pCtx->SysEnter.cs = pVmcbGuest->u64SysEnterCS;
2938	pCtx->SysEnter.eip = pVmcbGuest->u64SysEnterEIP;
2939	pCtx->SysEnter.esp = pVmcbGuest->u64SysEnterESP;
2940	}
2941
2942	if (fWhat & CPUMCTX_EXTRN_KERNEL_GS_BASE)
2943	pCtx->msrKERNELGSBASE = pVmcbGuest->u64KernelGSBase;
2944
2945	if (fWhat & CPUMCTX_EXTRN_DR_MASK)
2946	{
2947	if (fWhat & CPUMCTX_EXTRN_DR6)
2948	{
2949	if (!pVCpu->hm.s.fUsingHyperDR7)
2950	pCtx->dr[6] = pVmcbGuest->u64DR6;
2951	else
2952	CPUMSetHyperDR6(pVCpu, pVmcbGuest->u64DR6);
2953	}
2954
2955	if (fWhat & CPUMCTX_EXTRN_DR7)
2956	{
2957	if (!pVCpu->hm.s.fUsingHyperDR7)
2958	pCtx->dr[7] = pVmcbGuest->u64DR7;
2959	else
2960	Assert(pVmcbGuest->u64DR7 == CPUMGetHyperDR7(pVCpu));
2961	}
2962	}
2963
2964	if (fWhat & CPUMCTX_EXTRN_CR_MASK)
2965	{
2966	if (fWhat & CPUMCTX_EXTRN_CR0)
2967	{
2968	/* We intercept changes to all CR0 bits except maybe TS & MP bits. */
2969	uint64_t const uCr0 = (pCtx->cr0 & ~(X86_CR0_TS \| X86_CR0_MP))
2970	\| (pVmcbGuest->u64CR0 & (X86_CR0_TS \| X86_CR0_MP));
2971	VMMRZCallRing3Disable(pVCpu); /* Calls into PGM which has Log statements. */
2972	CPUMSetGuestCR0(pVCpu, uCr0);
2973	VMMRZCallRing3Enable(pVCpu);
2974	}
2975
2976	if (fWhat & CPUMCTX_EXTRN_CR2)
2977	pCtx->cr2 = pVmcbGuest->u64CR2;
2978
2979	if (fWhat & CPUMCTX_EXTRN_CR3)
2980	{
2981	if ( pVmcbCtrl->NestedPagingCtrl.n.u1NestedPaging
2982	&& pCtx->cr3 != pVmcbGuest->u64CR3)
2983	{
2984	CPUMSetGuestCR3(pVCpu, pVmcbGuest->u64CR3);
2985	VMCPU_FF_SET(pVCpu, VMCPU_FF_HM_UPDATE_CR3);
2986	}
2987	}
2988
2989	/* Changes to CR4 are always intercepted. */
2990	}
2991
2992	/* Update fExtrn. */
2993	pCtx->fExtrn &= ~fWhat;
2994
2995	/* If everything has been imported, clear the HM keeper bit. */
2996	if (!(pCtx->fExtrn & HMSVM_CPUMCTX_EXTRN_ALL))
2997	{
2998	pCtx->fExtrn &= ~CPUMCTX_EXTRN_KEEPER_HM;
2999	Assert(!pCtx->fExtrn);
3000	}
3001	}
3002	else
3003	Assert(!pCtx->fExtrn \|\| (pCtx->fExtrn & HMSVM_CPUMCTX_EXTRN_ALL));
3004
3005	ASMSetFlags(fEFlags);
3006
3007	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatImportGuestState, x);
3008
3009	/*
3010	* Honor any pending CR3 updates.
3011	*
3012	* Consider this scenario: #VMEXIT -> VMMRZCallRing3Enable() -> do stuff that causes a longjmp
3013	* -> hmR0SvmCallRing3Callback() -> VMMRZCallRing3Disable() -> hmR0SvmImportGuestState()
3014	* -> Sets VMCPU_FF_HM_UPDATE_CR3 pending -> return from the longjmp -> continue with #VMEXIT
3015	* handling -> hmR0SvmImportGuestState() and here we are.
3016	*
3017	* The reason for such complicated handling is because VM-exits that call into PGM expect
3018	* CR3 to be up-to-date and thus any CR3-saves -before- the VM-exit (longjmp) would've
3019	* postponed the CR3 update via the force-flag and cleared CR3 from fExtrn. Any SVM R0
3020	* VM-exit handler that requests CR3 to be saved will end up here and we call PGMUpdateCR3().
3021	*
3022	* The longjmp exit path can't check these CR3 force-flags and call code that takes a lock again,
3023	* and does not process force-flag like regular exits to ring-3 either, we cover for it here.
3024	*/
3025	if ( VMMRZCallRing3IsEnabled(pVCpu)
3026	&& VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3))
3027	{
3028	Assert(pCtx->cr3 == pVmcbGuest->u64CR3);
3029	PGMUpdateCR3(pVCpu, pCtx->cr3);
3030	}
3031	}
3032
3033
3034	/**
3035	* Saves the guest (or nested-guest) state from the VMCB into the guest-CPU
3036	* context.
3037	*
3038	* Currently there is no residual state left in the CPU that is not updated in the
3039	* VMCB.
3040	*
3041	* @returns VBox status code.
3042	* @param pVCpu The cross context virtual CPU structure.
3043	* @param fWhat What to import, CPUMCTX_EXTRN_XXX.
3044	*/
3045	VMMR0DECL(int) SVMR0ImportStateOnDemand(PVMCPU pVCpu, uint64_t fWhat)
3046	{
3047	hmR0SvmImportGuestState(pVCpu, fWhat);
3048	return VINF_SUCCESS;
3049	}
3050
3051
3052	/**
3053	* Does the necessary state syncing before returning to ring-3 for any reason
3054	* (longjmp, preemption, voluntary exits to ring-3) from AMD-V.
3055	*
3056	* @param pVCpu The cross context virtual CPU structure.
3057	* @param fImportState Whether to import the guest state from the VMCB back
3058	* to the guest-CPU context.
3059	*
3060	* @remarks No-long-jmp zone!!!
3061	*/
3062	static void hmR0SvmLeave(PVMCPU pVCpu, bool fImportState)
3063	{
3064	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
3065	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3066	Assert(VMMR0IsLogFlushDisabled(pVCpu));
3067
3068	/*
3069	* !!! IMPORTANT !!!
3070	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
3071	*/
3072
3073	/* Save the guest state if necessary. */
3074	if (fImportState)
3075	hmR0SvmImportGuestState(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
3076
3077	/* Restore host FPU state if necessary and resync on next R0 reentry. */
3078	CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
3079	Assert(!CPUMIsGuestFPUStateActive(pVCpu));
3080
3081	/*
3082	* Restore host debug registers if necessary and resync on next R0 reentry.
3083	*/
3084	#ifdef VBOX_STRICT
3085	if (CPUMIsHyperDebugStateActive(pVCpu))
3086	{
3087	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb; /** @todo nested-guest. */
3088	Assert(pVmcb->ctrl.u16InterceptRdDRx == 0xffff);
3089	Assert(pVmcb->ctrl.u16InterceptWrDRx == 0xffff);
3090	}
3091	#endif
3092	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
3093	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
3094	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
3095
3096	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
3097	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatImportGuestState);
3098	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExportGuestState);
3099	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatPreExit);
3100	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExitHandling);
3101	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
3102
3103	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
3104	}
3105
3106
3107	/**
3108	* Leaves the AMD-V session.
3109	*
3110	* Only used while returning to ring-3 either due to longjump or exits to
3111	* ring-3.
3112	*
3113	* @returns VBox status code.
3114	* @param pVCpu The cross context virtual CPU structure.
3115	*/
3116	static int hmR0SvmLeaveSession(PVMCPU pVCpu)
3117	{
3118	HM_DISABLE_PREEMPT();
3119	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3120	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
3121
3122	/* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
3123	and done this from the SVMR0ThreadCtxCallback(). */
3124	if (!pVCpu->hm.s.fLeaveDone)
3125	{
3126	hmR0SvmLeave(pVCpu, true /* fImportState */);
3127	pVCpu->hm.s.fLeaveDone = true;
3128	}
3129
3130	/*
3131	* !!! IMPORTANT !!!
3132	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
3133	*/
3134
3135	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
3136	/* Deregister hook now that we've left HM context before re-enabling preemption. */
3137	VMMR0ThreadCtxHookDisable(pVCpu);
3138
3139	/* Leave HM context. This takes care of local init (term). */
3140	int rc = HMR0LeaveCpu(pVCpu);
3141
3142	HM_RESTORE_PREEMPT();
3143	return rc;
3144	}
3145
3146
3147	/**
3148	* Does the necessary state syncing before doing a longjmp to ring-3.
3149	*
3150	* @returns VBox status code.
3151	* @param pVCpu The cross context virtual CPU structure.
3152	*
3153	* @remarks No-long-jmp zone!!!
3154	*/
3155	static int hmR0SvmLongJmpToRing3(PVMCPU pVCpu)
3156	{
3157	return hmR0SvmLeaveSession(pVCpu);
3158	}
3159
3160
3161	/**
3162	* VMMRZCallRing3() callback wrapper which saves the guest state (or restores
3163	* any remaining host state) before we longjump to ring-3 and possibly get
3164	* preempted.
3165	*
3166	* @param pVCpu The cross context virtual CPU structure.
3167	* @param enmOperation The operation causing the ring-3 longjump.
3168	* @param pvUser The user argument, NULL (currently unused).
3169	*/
3170	static DECLCALLBACK(int) hmR0SvmCallRing3Callback(PVMCPU pVCpu, VMMCALLRING3 enmOperation, void *pvUser)
3171	{
3172	RT_NOREF_PV(pvUser);
3173
3174	if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
3175	{
3176	/*
3177	* !!! IMPORTANT !!!
3178	* If you modify code here, make sure to check whether hmR0SvmLeave() and hmR0SvmLeaveSession() needs
3179	* to be updated too. This is a stripped down version which gets out ASAP trying to not trigger any assertion.
3180	*/
3181	VMMRZCallRing3RemoveNotification(pVCpu);
3182	VMMRZCallRing3Disable(pVCpu);
3183	HM_DISABLE_PREEMPT();
3184
3185	/* Import the entire guest state. */
3186	hmR0SvmImportGuestState(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
3187
3188	/* Restore host FPU state if necessary and resync on next R0 reentry. */
3189	CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
3190
3191	/* Restore host debug registers if necessary and resync on next R0 reentry. */
3192	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
3193
3194	/* Deregister the hook now that we've left HM context before re-enabling preemption. */
3195	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
3196	VMMR0ThreadCtxHookDisable(pVCpu);
3197
3198	/* Leave HM context. This takes care of local init (term). */
3199	HMR0LeaveCpu(pVCpu);
3200
3201	HM_RESTORE_PREEMPT();
3202	return VINF_SUCCESS;
3203	}
3204
3205	Assert(pVCpu);
3206	Assert(pvUser);
3207	Assert(VMMRZCallRing3IsEnabled(pVCpu));
3208	HMSVM_ASSERT_PREEMPT_SAFE(pVCpu);
3209
3210	VMMRZCallRing3Disable(pVCpu);
3211	Assert(VMMR0IsLogFlushDisabled(pVCpu));
3212
3213	Log4Func(("Calling hmR0SvmLongJmpToRing3\n"));
3214	int rc = hmR0SvmLongJmpToRing3(pVCpu);
3215	AssertRCReturn(rc, rc);
3216
3217	VMMRZCallRing3Enable(pVCpu);
3218	return VINF_SUCCESS;
3219	}
3220
3221
3222	/**
3223	* Take necessary actions before going back to ring-3.
3224	*
3225	* An action requires us to go back to ring-3. This function does the necessary
3226	* steps before we can safely return to ring-3. This is not the same as longjmps
3227	* to ring-3, this is voluntary.
3228	*
3229	* @returns VBox status code.
3230	* @param pVCpu The cross context virtual CPU structure.
3231	* @param rcExit The reason for exiting to ring-3. Can be
3232	* VINF_VMM_UNKNOWN_RING3_CALL.
3233	*/
3234	static int hmR0SvmExitToRing3(PVMCPU pVCpu, int rcExit)
3235	{
3236	Assert(pVCpu);
3237	HMSVM_ASSERT_PREEMPT_SAFE(pVCpu);
3238
3239	/* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
3240	VMMRZCallRing3Disable(pVCpu);
3241	Log4Func(("rcExit=%d LocalFF=%#RX32 GlobalFF=%#RX32\n", rcExit, pVCpu->fLocalForcedActions,
3242	pVCpu->CTX_SUFF(pVM)->fGlobalForcedActions));
3243
3244	/* We need to do this only while truly exiting the "inner loop" back to ring-3 and -not- for any longjmp to ring3. */
3245	if (pVCpu->hm.s.Event.fPending)
3246	{
3247	hmR0SvmPendingEventToTrpmTrap(pVCpu);
3248	Assert(!pVCpu->hm.s.Event.fPending);
3249	}
3250
3251	/* Sync. the necessary state for going back to ring-3. */
3252	hmR0SvmLeaveSession(pVCpu);
3253	STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
3254
3255	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
3256	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
3257	\| CPUM_CHANGED_LDTR
3258	\| CPUM_CHANGED_GDTR
3259	\| CPUM_CHANGED_IDTR
3260	\| CPUM_CHANGED_TR
3261	\| CPUM_CHANGED_HIDDEN_SEL_REGS);
3262	if ( pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging
3263	&& CPUMIsGuestPagingEnabledEx(&pVCpu->cpum.GstCtx))
3264	{
3265	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
3266	}
3267
3268	/* Update the exit-to-ring 3 reason. */
3269	pVCpu->hm.s.rcLastExitToR3 = rcExit;
3270
3271	/* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
3272	if (rcExit != VINF_EM_RAW_INTERRUPT)
3273	{
3274	Assert(!(pVCpu->cpum.GstCtx.fExtrn & HMSVM_CPUMCTX_EXTRN_ALL));
3275	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
3276	}
3277
3278	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
3279
3280	/* We do -not- want any longjmp notifications after this! We must return to ring-3 ASAP. */
3281	VMMRZCallRing3RemoveNotification(pVCpu);
3282	VMMRZCallRing3Enable(pVCpu);
3283
3284	/*
3285	* If we're emulating an instruction, we shouldn't have any TRPM traps pending
3286	* and if we're injecting an event we should have a TRPM trap pending.
3287	*/
3288	AssertReturnStmt(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT \|\| TRPMHasTrap(pVCpu),
3289	pVCpu->hm.s.u32HMError = rcExit,
3290	VERR_SVM_IPE_5);
3291	AssertReturnStmt(rcExit != VINF_EM_RAW_EMULATE_INSTR \|\| !TRPMHasTrap(pVCpu),
3292	pVCpu->hm.s.u32HMError = rcExit,
3293	VERR_SVM_IPE_4);
3294
3295	return rcExit;
3296	}
3297
3298
3299	/**
3300	* Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
3301	* intercepts.
3302	*
3303	* @param pVCpu The cross context virtual CPU structure.
3304	* @param pVmcb Pointer to the VM control block.
3305	*
3306	* @remarks No-long-jump zone!!!
3307	*/
3308	static void hmR0SvmUpdateTscOffsetting(PVMCPU pVCpu, PSVMVMCB pVmcb)
3309	{
3310	/*
3311	* Avoid intercepting RDTSC/RDTSCP if we determined the host TSC (++) is stable
3312	* and in case of a nested-guest, if the nested-VMCB specifies it is not intercepting
3313	* RDTSC/RDTSCP as well.
3314	*/
3315	bool fParavirtTsc;
3316	uint64_t uTscOffset;
3317	bool const fCanUseRealTsc = TMCpuTickCanUseRealTSC(pVCpu->CTX_SUFF(pVM), pVCpu, &uTscOffset, &fParavirtTsc);
3318
3319	bool fIntercept;
3320	if (fCanUseRealTsc)
3321	fIntercept = hmR0SvmClearCtrlIntercept(pVCpu, pVmcb, SVM_CTRL_INTERCEPT_RDTSC \| SVM_CTRL_INTERCEPT_RDTSCP);
3322	else
3323	{
3324	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_RDTSC \| SVM_CTRL_INTERCEPT_RDTSCP);
3325	fIntercept = true;
3326	}
3327
3328	if (!fIntercept)
3329	{
3330	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
3331	/* Apply the nested-guest VMCB's TSC offset over the guest TSC offset. */
3332	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
3333	uTscOffset = HMSvmNstGstApplyTscOffset(pVCpu, uTscOffset);
3334	#endif
3335
3336	/* Update the TSC offset in the VMCB and the relevant clean bits. */
3337	pVmcb->ctrl.u64TSCOffset = uTscOffset;
3338	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
3339
3340	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
3341	}
3342	else
3343	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
3344
3345	/* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
3346	information before every VM-entry, hence we have nothing to do here at the moment. */
3347	if (fParavirtTsc)
3348	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
3349	}
3350
3351
3352	/**
3353	* Sets an event as a pending event to be injected into the guest.
3354	*
3355	* @param pVCpu The cross context virtual CPU structure.
3356	* @param pEvent Pointer to the SVM event.
3357	* @param GCPtrFaultAddress The fault-address (CR2) in case it's a
3358	* page-fault.
3359	*
3360	* @remarks Statistics counter assumes this is a guest event being reflected to
3361	* the guest i.e. 'StatInjectPendingReflect' is incremented always.
3362	*/
3363	DECLINLINE(void) hmR0SvmSetPendingEvent(PVMCPU pVCpu, PSVMEVENT pEvent, RTGCUINTPTR GCPtrFaultAddress)
3364	{
3365	Assert(!pVCpu->hm.s.Event.fPending);
3366	Assert(pEvent->n.u1Valid);
3367
3368	pVCpu->hm.s.Event.u64IntInfo = pEvent->u;
3369	pVCpu->hm.s.Event.fPending = true;
3370	pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
3371
3372	Log4Func(("u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u, pEvent->n.u8Vector,
3373	(uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
3374	}
3375
3376
3377	/**
3378	* Sets an invalid-opcode (\#UD) exception as pending-for-injection into the VM.
3379	*
3380	* @param pVCpu The cross context virtual CPU structure.
3381	*/
3382	DECLINLINE(void) hmR0SvmSetPendingXcptUD(PVMCPU pVCpu)
3383	{
3384	SVMEVENT Event;
3385	Event.u = 0;
3386	Event.n.u1Valid = 1;
3387	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3388	Event.n.u8Vector = X86_XCPT_UD;
3389	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3390	}
3391
3392
3393	/**
3394	* Sets a debug (\#DB) exception as pending-for-injection into the VM.
3395	*
3396	* @param pVCpu The cross context virtual CPU structure.
3397	*/
3398	DECLINLINE(void) hmR0SvmSetPendingXcptDB(PVMCPU pVCpu)
3399	{
3400	SVMEVENT Event;
3401	Event.u = 0;
3402	Event.n.u1Valid = 1;
3403	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3404	Event.n.u8Vector = X86_XCPT_DB;
3405	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3406	}
3407
3408
3409	/**
3410	* Sets a page fault (\#PF) exception as pending-for-injection into the VM.
3411	*
3412	* @param pVCpu The cross context virtual CPU structure.
3413	* @param u32ErrCode The error-code for the page-fault.
3414	* @param uFaultAddress The page fault address (CR2).
3415	*
3416	* @remarks This updates the guest CR2 with @a uFaultAddress!
3417	*/
3418	DECLINLINE(void) hmR0SvmSetPendingXcptPF(PVMCPU pVCpu, uint32_t u32ErrCode, RTGCUINTPTR uFaultAddress)
3419	{
3420	SVMEVENT Event;
3421	Event.u = 0;
3422	Event.n.u1Valid = 1;
3423	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3424	Event.n.u8Vector = X86_XCPT_PF;
3425	Event.n.u1ErrorCodeValid = 1;
3426	Event.n.u32ErrorCode = u32ErrCode;
3427
3428	/* Update CR2 of the guest. */
3429	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CR2);
3430	if (pVCpu->cpum.GstCtx.cr2 != uFaultAddress)
3431	{
3432	pVCpu->cpum.GstCtx.cr2 = uFaultAddress;
3433	/* The VMCB clean bit for CR2 will be updated while re-loading the guest state. */
3434	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR2);
3435	}
3436
3437	hmR0SvmSetPendingEvent(pVCpu, &Event, uFaultAddress);
3438	}
3439
3440
3441	/**
3442	* Sets a math-fault (\#MF) exception as pending-for-injection into the VM.
3443	*
3444	* @param pVCpu The cross context virtual CPU structure.
3445	*/
3446	DECLINLINE(void) hmR0SvmSetPendingXcptMF(PVMCPU pVCpu)
3447	{
3448	SVMEVENT Event;
3449	Event.u = 0;
3450	Event.n.u1Valid = 1;
3451	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3452	Event.n.u8Vector = X86_XCPT_MF;
3453	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3454	}
3455
3456
3457	/**
3458	* Sets a double fault (\#DF) exception as pending-for-injection into the VM.
3459	*
3460	* @param pVCpu The cross context virtual CPU structure.
3461	*/
3462	DECLINLINE(void) hmR0SvmSetPendingXcptDF(PVMCPU pVCpu)
3463	{
3464	SVMEVENT Event;
3465	Event.u = 0;
3466	Event.n.u1Valid = 1;
3467	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3468	Event.n.u8Vector = X86_XCPT_DF;
3469	Event.n.u1ErrorCodeValid = 1;
3470	Event.n.u32ErrorCode = 0;
3471	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3472	}
3473
3474
3475	/**
3476	* Injects an event into the guest upon VMRUN by updating the relevant field
3477	* in the VMCB.
3478	*
3479	* @param pVCpu The cross context virtual CPU structure.
3480	* @param pVmcb Pointer to the guest VM control block.
3481	* @param pEvent Pointer to the event.
3482	*
3483	* @remarks No-long-jump zone!!!
3484	* @remarks Requires CR0!
3485	*/
3486	DECLINLINE(void) hmR0SvmInjectEventVmcb(PVMCPU pVCpu, PSVMVMCB pVmcb, PSVMEVENT pEvent)
3487	{
3488	Assert(!pVmcb->ctrl.EventInject.n.u1Valid);
3489	pVmcb->ctrl.EventInject.u = pEvent->u;
3490	STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
3491	RT_NOREF(pVCpu);
3492
3493	Log4Func(("u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u, pEvent->n.u8Vector,
3494	(uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
3495	}
3496
3497
3498
3499	/**
3500	* Converts any TRPM trap into a pending HM event. This is typically used when
3501	* entering from ring-3 (not longjmp returns).
3502	*
3503	* @param pVCpu The cross context virtual CPU structure.
3504	*/
3505	static void hmR0SvmTrpmTrapToPendingEvent(PVMCPU pVCpu)
3506	{
3507	Assert(TRPMHasTrap(pVCpu));
3508	Assert(!pVCpu->hm.s.Event.fPending);
3509
3510	uint8_t uVector;
3511	TRPMEVENT enmTrpmEvent;
3512	RTGCUINT uErrCode;
3513	RTGCUINTPTR GCPtrFaultAddress;
3514	uint8_t cbInstr;
3515
3516	int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr);
3517	AssertRC(rc);
3518
3519	SVMEVENT Event;
3520	Event.u = 0;
3521	Event.n.u1Valid = 1;
3522	Event.n.u8Vector = uVector;
3523
3524	/* Refer AMD spec. 15.20 "Event Injection" for the format. */
3525	if (enmTrpmEvent == TRPM_TRAP)
3526	{
3527	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3528	switch (uVector)
3529	{
3530	case X86_XCPT_NMI:
3531	{
3532	Event.n.u3Type = SVM_EVENT_NMI;
3533	break;
3534	}
3535
3536	case X86_XCPT_PF:
3537	case X86_XCPT_DF:
3538	case X86_XCPT_TS:
3539	case X86_XCPT_NP:
3540	case X86_XCPT_SS:
3541	case X86_XCPT_GP:
3542	case X86_XCPT_AC:
3543	{
3544	Event.n.u1ErrorCodeValid = 1;
3545	Event.n.u32ErrorCode = uErrCode;
3546	break;
3547	}
3548	}
3549	}
3550	else if (enmTrpmEvent == TRPM_HARDWARE_INT)
3551	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
3552	else if (enmTrpmEvent == TRPM_SOFTWARE_INT)
3553	Event.n.u3Type = SVM_EVENT_SOFTWARE_INT;
3554	else
3555	AssertMsgFailed(("Invalid TRPM event type %d\n", enmTrpmEvent));
3556
3557	rc = TRPMResetTrap(pVCpu);
3558	AssertRC(rc);
3559
3560	Log4(("TRPM->HM event: u=%#RX64 u8Vector=%#x uErrorCodeValid=%RTbool uErrorCode=%#RX32\n", Event.u, Event.n.u8Vector,
3561	!!Event.n.u1ErrorCodeValid, Event.n.u32ErrorCode));
3562
3563	hmR0SvmSetPendingEvent(pVCpu, &Event, GCPtrFaultAddress);
3564	}
3565
3566
3567	/**
3568	* Converts any pending SVM event into a TRPM trap. Typically used when leaving
3569	* AMD-V to execute any instruction.
3570	*
3571	* @param pVCpu The cross context virtual CPU structure.
3572	*/
3573	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu)
3574	{
3575	Assert(pVCpu->hm.s.Event.fPending);
3576	Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo /, NULL / pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
3577
3578	SVMEVENT Event;
3579	Event.u = pVCpu->hm.s.Event.u64IntInfo;
3580
3581	uint8_t uVector = Event.n.u8Vector;
3582	uint8_t uVectorType = Event.n.u3Type;
3583	TRPMEVENT enmTrapType = HMSvmEventToTrpmEventType(&Event);
3584
3585	Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, uVectorType));
3586
3587	int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
3588	AssertRC(rc);
3589
3590	if (Event.n.u1ErrorCodeValid)
3591	TRPMSetErrorCode(pVCpu, Event.n.u32ErrorCode);
3592
3593	if ( uVectorType == SVM_EVENT_EXCEPTION
3594	&& uVector == X86_XCPT_PF)
3595	{
3596	TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
3597	Assert(pVCpu->hm.s.Event.GCPtrFaultAddress == CPUMGetGuestCR2(pVCpu));
3598	}
3599	else if (uVectorType == SVM_EVENT_SOFTWARE_INT)
3600	{
3601	AssertMsg( uVectorType == SVM_EVENT_SOFTWARE_INT
3602	\|\| (uVector == X86_XCPT_BP \|\| uVector == X86_XCPT_OF),
3603	("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
3604	TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
3605	}
3606	pVCpu->hm.s.Event.fPending = false;
3607	}
3608
3609
3610	/**
3611	* Checks if the guest (or nested-guest) has an interrupt shadow active right
3612	* now.
3613	*
3614	* @returns @c true if the interrupt shadow is active, @c false otherwise.
3615	* @param pVCpu The cross context virtual CPU structure.
3616	*
3617	* @remarks No-long-jump zone!!!
3618	* @remarks Has side-effects with VMCPU_FF_INHIBIT_INTERRUPTS force-flag.
3619	*/
3620	static bool hmR0SvmIsIntrShadowActive(PVMCPU pVCpu)
3621	{
3622	/*
3623	* Instructions like STI and MOV SS inhibit interrupts till the next instruction
3624	* completes. Check if we should inhibit interrupts or clear any existing
3625	* interrupt inhibition.
3626	*/
3627	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
3628	{
3629	if (pVCpu->cpum.GstCtx.rip != EMGetInhibitInterruptsPC(pVCpu))
3630	{
3631	/*
3632	* We can clear the inhibit force flag as even if we go back to the recompiler
3633	* without executing guest code in AMD-V, the flag's condition to be cleared is
3634	* met and thus the cleared state is correct.
3635	*/
3636	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
3637	return false;
3638	}
3639	return true;
3640	}
3641	return false;
3642	}
3643
3644
3645	/**
3646	* Sets the virtual interrupt intercept control in the VMCB.
3647	*
3648	* @param pVCpu The cross context virtual CPU structure.
3649	* @param pVmcb Pointer to the VM control block.
3650	*/
3651	static void hmR0SvmSetIntWindowExiting(PVMCPU pVCpu, PSVMVMCB pVmcb)
3652	{
3653	/*
3654	* When AVIC isn't supported, set up an interrupt window to cause a #VMEXIT when the guest
3655	* is ready to accept interrupts. At #VMEXIT, we then get the interrupt from the APIC
3656	* (updating ISR at the right time) and inject the interrupt.
3657	*
3658	* With AVIC is supported, we could make use of the asynchronously delivery without
3659	* #VMEXIT and we would be passing the AVIC page to SVM.
3660	*
3661	* In AMD-V, an interrupt window is achieved using a combination of V_IRQ (an interrupt
3662	* is pending), V_IGN_TPR (ignore TPR priorities) and the VINTR intercept all being set.
3663	*/
3664	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
3665	/*
3666	* Currently we don't overlay interupt windows and if there's any V_IRQ pending in the
3667	* nested-guest VMCB, we avoid setting up any interrupt window on behalf of the outer
3668	* guest.
3669	*/
3670	/** @todo Does this mean we end up prioritizing virtual interrupt
3671	* delivery/window over a physical interrupt (from the outer guest)
3672	* might be pending? */
3673	bool const fEnableIntWindow = !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST);
3674	if (!fEnableIntWindow)
3675	{
3676	Assert(CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx));
3677	Log4(("Nested-guest V_IRQ already pending\n"));
3678	}
3679	#else
3680	bool const fEnableIntWindow = true;
3681	#endif
3682	if (fEnableIntWindow)
3683	{
3684	Assert(pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR);
3685	pVmcb->ctrl.IntCtrl.n.u1VIrqPending = 1;
3686	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INT_CTRL;
3687	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_VINTR);
3688	Log4(("Set VINTR intercept\n"));
3689	}
3690	}
3691
3692
3693	/**
3694	* Clears the virtual interrupt intercept control in the VMCB as
3695	* we are figured the guest is unable process any interrupts
3696	* at this point of time.
3697	*
3698	* @param pVCpu The cross context virtual CPU structure.
3699	* @param pVmcb Pointer to the VM control block.
3700	*/
3701	static void hmR0SvmClearIntWindowExiting(PVMCPU pVCpu, PSVMVMCB pVmcb)
3702	{
3703	PSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
3704	if ( pVmcbCtrl->IntCtrl.n.u1VIrqPending
3705	\|\| (pVmcbCtrl->u64InterceptCtrl & SVM_CTRL_INTERCEPT_VINTR))
3706	{
3707	pVmcbCtrl->IntCtrl.n.u1VIrqPending = 0;
3708	pVmcbCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INT_CTRL;
3709	hmR0SvmClearCtrlIntercept(pVCpu, pVmcb, SVM_CTRL_INTERCEPT_VINTR);
3710	Log4(("Cleared VINTR intercept\n"));
3711	}
3712	}
3713
3714	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
3715	/**
3716	* Evaluates the event to be delivered to the nested-guest and sets it as the
3717	* pending event.
3718	*
3719	* @returns VBox strict status code.
3720	* @param pVCpu The cross context virtual CPU structure.
3721	*/
3722	static VBOXSTRICTRC hmR0SvmEvaluatePendingEventNested(PVMCPU pVCpu)
3723	{
3724	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
3725	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
3726	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_HWVIRT
3727	\| CPUMCTX_EXTRN_RFLAGS
3728	\| CPUMCTX_EXTRN_HM_SVM_INT_SHADOW
3729	\| CPUMCTX_EXTRN_HM_SVM_HWVIRT_VIRQ);
3730
3731	Assert(!pVCpu->hm.s.Event.fPending);
3732	Assert(pCtx->hwvirt.fGif);
3733	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
3734	Assert(pVmcb);
3735
3736	bool const fVirtualGif = CPUMGetSvmNstGstVGif(pCtx);
3737	bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu);
3738	bool const fBlockNmi = VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS);
3739
3740	Log4Func(("fVirtualGif=%RTbool fBlockNmi=%RTbool fIntShadow=%RTbool fIntPending=%RTbool fNmiPending=%RTbool\n",
3741	fVirtualGif, fBlockNmi, fIntShadow, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC),
3742	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)));
3743
3744	/** @todo SMI. SMIs take priority over NMIs. */
3745
3746	/*
3747	* Check if the guest can receive NMIs.
3748	* Nested NMIs are not allowed, see AMD spec. 8.1.4 "Masking External Interrupts".
3749	* NMIs take priority over maskable interrupts, see AMD spec. 8.5 "Priorities".
3750	*/
3751	if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)
3752	&& !fBlockNmi)
3753	{
3754	if ( fVirtualGif
3755	&& !fIntShadow)
3756	{
3757	if (CPUMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_NMI))
3758	{
3759	Log4(("Intercepting NMI -> #VMEXIT\n"));
3760	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_SVM_VMEXIT_MASK);
3761	return IEMExecSvmVmexit(pVCpu, SVM_EXIT_NMI, 0, 0);
3762	}
3763
3764	Log4(("Setting NMI pending for injection\n"));
3765	SVMEVENT Event;
3766	Event.u = 0;
3767	Event.n.u1Valid = 1;
3768	Event.n.u8Vector = X86_XCPT_NMI;
3769	Event.n.u3Type = SVM_EVENT_NMI;
3770	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3771	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
3772	}
3773	else if (!fVirtualGif)
3774	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3775	else
3776	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb);
3777	}
3778	/*
3779	* Check if the nested-guest can receive external interrupts (generated by the guest's
3780	* PIC/APIC).
3781	*
3782	* External intercepts, NMI, SMI etc. from the physical CPU are -always- intercepted
3783	* when executing using hardware-assisted SVM, see HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS.
3784	*
3785	* External interrupts that are generated for the outer guest may be intercepted
3786	* depending on how the nested-guest VMCB was programmed by guest software.
3787	*
3788	* Physical interrupts always take priority over virtual interrupts,
3789	* see AMD spec. 15.21.4 "Injecting Virtual (INTR) Interrupts".
3790	*/
3791	else if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
3792	&& !pVCpu->hm.s.fSingleInstruction)
3793	{
3794	if ( fVirtualGif
3795	&& !fIntShadow
3796	&& CPUMCanSvmNstGstTakePhysIntr(pVCpu, pCtx))
3797	{
3798	if (CPUMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INTR))
3799	{
3800	Log4(("Intercepting INTR -> #VMEXIT\n"));
3801	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_SVM_VMEXIT_MASK);
3802	return IEMExecSvmVmexit(pVCpu, SVM_EXIT_INTR, 0, 0);
3803	}
3804
3805	uint8_t u8Interrupt;
3806	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
3807	if (RT_SUCCESS(rc))
3808	{
3809	Log4(("Setting external interrupt %#x pending for injection\n", u8Interrupt));
3810	SVMEVENT Event;
3811	Event.u = 0;
3812	Event.n.u1Valid = 1;
3813	Event.n.u8Vector = u8Interrupt;
3814	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
3815	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3816	}
3817	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
3818	{
3819	/*
3820	* AMD-V has no TPR thresholding feature. TPR and the force-flag will be
3821	* updated eventually when the TPR is written by the guest.
3822	*/
3823	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
3824	}
3825	else
3826	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
3827	}
3828	else if (!fVirtualGif)
3829	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3830	else
3831	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb);
3832	}
3833
3834	return VINF_SUCCESS;
3835	}
3836	#endif
3837
3838	/**
3839	* Evaluates the event to be delivered to the guest and sets it as the pending
3840	* event.
3841	*
3842	* @param pVCpu The cross context virtual CPU structure.
3843	*/
3844	static void hmR0SvmEvaluatePendingEvent(PVMCPU pVCpu)
3845	{
3846	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
3847	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
3848	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_HWVIRT
3849	\| CPUMCTX_EXTRN_RFLAGS
3850	\| CPUMCTX_EXTRN_HM_SVM_INT_SHADOW);
3851
3852	Assert(!pVCpu->hm.s.Event.fPending);
3853	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
3854	Assert(pVmcb);
3855
3856	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
3857	bool const fGif = pCtx->hwvirt.fGif;
3858	#else
3859	bool const fGif = true;
3860	#endif
3861	bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu);
3862	bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
3863	bool const fBlockNmi = VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS);
3864
3865	Log4Func(("fGif=%RTbool fBlockNmi=%RTbool fBlockInt=%RTbool fIntShadow=%RTbool fIntPending=%RTbool NMI pending=%RTbool\n",
3866	fGif, fBlockNmi, fBlockInt, fIntShadow,
3867	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC),
3868	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)));
3869
3870	/** @todo SMI. SMIs take priority over NMIs. */
3871
3872	/*
3873	* Check if the guest can receive NMIs.
3874	* Nested NMIs are not allowed, see AMD spec. 8.1.4 "Masking External Interrupts".
3875	* NMIs take priority over maskable interrupts, see AMD spec. 8.5 "Priorities".
3876	*/
3877	if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)
3878	&& !fBlockNmi)
3879	{
3880	if ( fGif
3881	&& !fIntShadow)
3882	{
3883	Log4(("Setting NMI pending for injection\n"));
3884	SVMEVENT Event;
3885	Event.u = 0;
3886	Event.n.u1Valid = 1;
3887	Event.n.u8Vector = X86_XCPT_NMI;
3888	Event.n.u3Type = SVM_EVENT_NMI;
3889	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3890	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
3891	}
3892	else if (!fGif)
3893	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3894	else
3895	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb);
3896	}
3897	/*
3898	* Check if the guest can receive external interrupts (PIC/APIC). Once PDMGetInterrupt()
3899	* returns a valid interrupt we -must- deliver the interrupt. We can no longer re-request
3900	* it from the APIC device.
3901	*/
3902	else if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
3903	&& !pVCpu->hm.s.fSingleInstruction)
3904	{
3905	if ( fGif
3906	&& !fBlockInt
3907	&& !fIntShadow)
3908	{
3909	uint8_t u8Interrupt;
3910	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
3911	if (RT_SUCCESS(rc))
3912	{
3913	Log4(("Setting external interrupt %#x pending for injection\n", u8Interrupt));
3914	SVMEVENT Event;
3915	Event.u = 0;
3916	Event.n.u1Valid = 1;
3917	Event.n.u8Vector = u8Interrupt;
3918	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
3919	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3920	}
3921	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
3922	{
3923	/*
3924	* AMD-V has no TPR thresholding feature. TPR and the force-flag will be
3925	* updated eventually when the TPR is written by the guest.
3926	*/
3927	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
3928	}
3929	else
3930	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
3931	}
3932	else if (!fGif)
3933	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3934	else
3935	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb);
3936	}
3937	}
3938
3939
3940	/**
3941	* Injects any pending events into the guest (or nested-guest).
3942	*
3943	* @param pVCpu The cross context virtual CPU structure.
3944	* @param pVmcb Pointer to the VM control block.
3945	*
3946	* @remarks Must only be called when we are guaranteed to enter
3947	* hardware-assisted SVM execution and not return to ring-3
3948	* prematurely.
3949	*/
3950	static void hmR0SvmInjectPendingEvent(PVMCPU pVCpu, PSVMVMCB pVmcb)
3951	{
3952	Assert(!TRPMHasTrap(pVCpu));
3953	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3954
3955	bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu);
3956	#ifdef VBOX_STRICT
3957	PCCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
3958	bool const fGif = pCtx->hwvirt.fGif;
3959	bool fAllowInt = fGif;
3960	if (fGif)
3961	{
3962	/*
3963	* For nested-guests we have no way to determine if we're injecting a physical or
3964	* virtual interrupt at this point. Hence the partial verification below.
3965	*/
3966	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
3967	fAllowInt = CPUMCanSvmNstGstTakePhysIntr(pVCpu, pCtx) \|\| CPUMCanSvmNstGstTakeVirtIntr(pVCpu, pCtx);
3968	else
3969	fAllowInt = RT_BOOL(pCtx->eflags.u32 & X86_EFL_IF);
3970	}
3971	#endif
3972
3973	if (pVCpu->hm.s.Event.fPending)
3974	{
3975	SVMEVENT Event;
3976	Event.u = pVCpu->hm.s.Event.u64IntInfo;
3977	Assert(Event.n.u1Valid);
3978
3979	/*
3980	* Validate event injection pre-conditions.
3981	*/
3982	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
3983	{
3984	Assert(fAllowInt);
3985	Assert(!fIntShadow);
3986	}
3987	else if (Event.n.u3Type == SVM_EVENT_NMI)
3988	{
3989	Assert(fGif);
3990	Assert(!fIntShadow);
3991	}
3992
3993	/*
3994	* Before injecting an NMI we must set VMCPU_FF_BLOCK_NMIS to prevent nested NMIs. We
3995	* do this only when we are surely going to inject the NMI as otherwise if we return
3996	* to ring-3 prematurely we could leave NMIs blocked indefinitely upon re-entry into
3997	* SVM R0.
3998	*
3999	* With VT-x, this is handled by the Guest interruptibility information VMCS field
4000	* which will set the VMCS field after actually delivering the NMI which we read on
4001	* VM-exit to determine the state.
4002	*/
4003	if ( Event.n.u3Type == SVM_EVENT_NMI
4004	&& Event.n.u8Vector == X86_XCPT_NMI
4005	&& !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
4006	{
4007	VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
4008	}
4009
4010	/*
4011	* Inject it (update VMCB for injection by the hardware).
4012	*/
4013	Log4(("Injecting pending HM event\n"));
4014	hmR0SvmInjectEventVmcb(pVCpu, pVmcb, &Event);
4015	pVCpu->hm.s.Event.fPending = false;
4016
4017	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
4018	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
4019	else
4020	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
4021	}
4022	else
4023	Assert(pVmcb->ctrl.EventInject.n.u1Valid == 0);
4024
4025	/*
4026	* We could have injected an NMI through IEM and continue guest execution using
4027	* hardware-assisted SVM. In which case, we would not have any events pending (above)
4028	* but we still need to intercept IRET in order to eventually clear NMI inhibition.
4029	*/
4030	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
4031	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_IRET);
4032
4033	/*
4034	* Update the guest interrupt shadow in the guest (or nested-guest) VMCB.
4035	*
4036	* For nested-guests: We need to update it too for the scenario where IEM executes
4037	* the nested-guest but execution later continues here with an interrupt shadow active.
4038	*/
4039	pVmcb->ctrl.IntShadow.n.u1IntShadow = fIntShadow;
4040	}
4041
4042
4043	/**
4044	* Reports world-switch error and dumps some useful debug info.
4045	*
4046	* @param pVCpu The cross context virtual CPU structure.
4047	* @param rcVMRun The return code from VMRUN (or
4048	* VERR_SVM_INVALID_GUEST_STATE for invalid
4049	* guest-state).
4050	*/
4051	static void hmR0SvmReportWorldSwitchError(PVMCPU pVCpu, int rcVMRun)
4052	{
4053	HMSVM_ASSERT_PREEMPT_SAFE(pVCpu);
4054	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(&pVCpu->cpum.GstCtx);
4055	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
4056
4057	if (rcVMRun == VERR_SVM_INVALID_GUEST_STATE)
4058	{
4059	#ifdef VBOX_STRICT
4060	hmR0DumpRegs(pVCpu, &pVCpu->cpum.GstCtx);
4061	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
4062	Log4(("ctrl.u32VmcbCleanBits %#RX32\n", pVmcb->ctrl.u32VmcbCleanBits));
4063	Log4(("ctrl.u16InterceptRdCRx %#x\n", pVmcb->ctrl.u16InterceptRdCRx));
4064	Log4(("ctrl.u16InterceptWrCRx %#x\n", pVmcb->ctrl.u16InterceptWrCRx));
4065	Log4(("ctrl.u16InterceptRdDRx %#x\n", pVmcb->ctrl.u16InterceptRdDRx));
4066	Log4(("ctrl.u16InterceptWrDRx %#x\n", pVmcb->ctrl.u16InterceptWrDRx));
4067	Log4(("ctrl.u32InterceptXcpt %#x\n", pVmcb->ctrl.u32InterceptXcpt));
4068	Log4(("ctrl.u64InterceptCtrl %#RX64\n", pVmcb->ctrl.u64InterceptCtrl));
4069	Log4(("ctrl.u64IOPMPhysAddr %#RX64\n", pVmcb->ctrl.u64IOPMPhysAddr));
4070	Log4(("ctrl.u64MSRPMPhysAddr %#RX64\n", pVmcb->ctrl.u64MSRPMPhysAddr));
4071	Log4(("ctrl.u64TSCOffset %#RX64\n", pVmcb->ctrl.u64TSCOffset));
4072
4073	Log4(("ctrl.TLBCtrl.u32ASID %#x\n", pVmcb->ctrl.TLBCtrl.n.u32ASID));
4074	Log4(("ctrl.TLBCtrl.u8TLBFlush %#x\n", pVmcb->ctrl.TLBCtrl.n.u8TLBFlush));
4075	Log4(("ctrl.TLBCtrl.u24Reserved %#x\n", pVmcb->ctrl.TLBCtrl.n.u24Reserved));
4076
4077	Log4(("ctrl.IntCtrl.u8VTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u8VTPR));
4078	Log4(("ctrl.IntCtrl.u1VIrqPending %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqPending));
4079	Log4(("ctrl.IntCtrl.u1VGif %#x\n", pVmcb->ctrl.IntCtrl.n.u1VGif));
4080	Log4(("ctrl.IntCtrl.u6Reserved0 %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved));
4081	Log4(("ctrl.IntCtrl.u4VIntrPrio %#x\n", pVmcb->ctrl.IntCtrl.n.u4VIntrPrio));
4082	Log4(("ctrl.IntCtrl.u1IgnoreTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR));
4083	Log4(("ctrl.IntCtrl.u3Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u3Reserved));
4084	Log4(("ctrl.IntCtrl.u1VIntrMasking %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIntrMasking));
4085	Log4(("ctrl.IntCtrl.u1VGifEnable %#x\n", pVmcb->ctrl.IntCtrl.n.u1VGifEnable));
4086	Log4(("ctrl.IntCtrl.u5Reserved1 %#x\n", pVmcb->ctrl.IntCtrl.n.u5Reserved));
4087	Log4(("ctrl.IntCtrl.u8VIntrVector %#x\n", pVmcb->ctrl.IntCtrl.n.u8VIntrVector));
4088	Log4(("ctrl.IntCtrl.u24Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u24Reserved));
4089
4090	Log4(("ctrl.IntShadow.u1IntShadow %#x\n", pVmcb->ctrl.IntShadow.n.u1IntShadow));
4091	Log4(("ctrl.IntShadow.u1GuestIntMask %#x\n", pVmcb->ctrl.IntShadow.n.u1GuestIntMask));
4092	Log4(("ctrl.u64ExitCode %#RX64\n", pVmcb->ctrl.u64ExitCode));
4093	Log4(("ctrl.u64ExitInfo1 %#RX64\n", pVmcb->ctrl.u64ExitInfo1));
4094	Log4(("ctrl.u64ExitInfo2 %#RX64\n", pVmcb->ctrl.u64ExitInfo2));
4095	Log4(("ctrl.ExitIntInfo.u8Vector %#x\n", pVmcb->ctrl.ExitIntInfo.n.u8Vector));
4096	Log4(("ctrl.ExitIntInfo.u3Type %#x\n", pVmcb->ctrl.ExitIntInfo.n.u3Type));
4097	Log4(("ctrl.ExitIntInfo.u1ErrorCodeValid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
4098	Log4(("ctrl.ExitIntInfo.u19Reserved %#x\n", pVmcb->ctrl.ExitIntInfo.n.u19Reserved));
4099	Log4(("ctrl.ExitIntInfo.u1Valid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1Valid));
4100	Log4(("ctrl.ExitIntInfo.u32ErrorCode %#x\n", pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
4101	Log4(("ctrl.NestedPagingCtrl.u1NestedPaging %#x\n", pVmcb->ctrl.NestedPagingCtrl.n.u1NestedPaging));
4102	Log4(("ctrl.NestedPagingCtrl.u1Sev %#x\n", pVmcb->ctrl.NestedPagingCtrl.n.u1Sev));
4103	Log4(("ctrl.NestedPagingCtrl.u1SevEs %#x\n", pVmcb->ctrl.NestedPagingCtrl.n.u1SevEs));
4104	Log4(("ctrl.EventInject.u8Vector %#x\n", pVmcb->ctrl.EventInject.n.u8Vector));
4105	Log4(("ctrl.EventInject.u3Type %#x\n", pVmcb->ctrl.EventInject.n.u3Type));
4106	Log4(("ctrl.EventInject.u1ErrorCodeValid %#x\n", pVmcb->ctrl.EventInject.n.u1ErrorCodeValid));
4107	Log4(("ctrl.EventInject.u19Reserved %#x\n", pVmcb->ctrl.EventInject.n.u19Reserved));
4108	Log4(("ctrl.EventInject.u1Valid %#x\n", pVmcb->ctrl.EventInject.n.u1Valid));
4109	Log4(("ctrl.EventInject.u32ErrorCode %#x\n", pVmcb->ctrl.EventInject.n.u32ErrorCode));
4110
4111	Log4(("ctrl.u64NestedPagingCR3 %#RX64\n", pVmcb->ctrl.u64NestedPagingCR3));
4112
4113	Log4(("ctrl.LbrVirt.u1LbrVirt %#x\n", pVmcb->ctrl.LbrVirt.n.u1LbrVirt));
4114	Log4(("ctrl.LbrVirt.u1VirtVmsaveVmload %#x\n", pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload));
4115
4116	Log4(("guest.CS.u16Sel %RTsel\n", pVmcb->guest.CS.u16Sel));
4117	Log4(("guest.CS.u16Attr %#x\n", pVmcb->guest.CS.u16Attr));
4118	Log4(("guest.CS.u32Limit %#RX32\n", pVmcb->guest.CS.u32Limit));
4119	Log4(("guest.CS.u64Base %#RX64\n", pVmcb->guest.CS.u64Base));
4120	Log4(("guest.DS.u16Sel %#RTsel\n", pVmcb->guest.DS.u16Sel));
4121	Log4(("guest.DS.u16Attr %#x\n", pVmcb->guest.DS.u16Attr));
4122	Log4(("guest.DS.u32Limit %#RX32\n", pVmcb->guest.DS.u32Limit));
4123	Log4(("guest.DS.u64Base %#RX64\n", pVmcb->guest.DS.u64Base));
4124	Log4(("guest.ES.u16Sel %RTsel\n", pVmcb->guest.ES.u16Sel));
4125	Log4(("guest.ES.u16Attr %#x\n", pVmcb->guest.ES.u16Attr));
4126	Log4(("guest.ES.u32Limit %#RX32\n", pVmcb->guest.ES.u32Limit));
4127	Log4(("guest.ES.u64Base %#RX64\n", pVmcb->guest.ES.u64Base));
4128	Log4(("guest.FS.u16Sel %RTsel\n", pVmcb->guest.FS.u16Sel));
4129	Log4(("guest.FS.u16Attr %#x\n", pVmcb->guest.FS.u16Attr));
4130	Log4(("guest.FS.u32Limit %#RX32\n", pVmcb->guest.FS.u32Limit));
4131	Log4(("guest.FS.u64Base %#RX64\n", pVmcb->guest.FS.u64Base));
4132	Log4(("guest.GS.u16Sel %RTsel\n", pVmcb->guest.GS.u16Sel));
4133	Log4(("guest.GS.u16Attr %#x\n", pVmcb->guest.GS.u16Attr));
4134	Log4(("guest.GS.u32Limit %#RX32\n", pVmcb->guest.GS.u32Limit));
4135	Log4(("guest.GS.u64Base %#RX64\n", pVmcb->guest.GS.u64Base));
4136
4137	Log4(("guest.GDTR.u32Limit %#RX32\n", pVmcb->guest.GDTR.u32Limit));
4138	Log4(("guest.GDTR.u64Base %#RX64\n", pVmcb->guest.GDTR.u64Base));
4139
4140	Log4(("guest.LDTR.u16Sel %RTsel\n", pVmcb->guest.LDTR.u16Sel));
4141	Log4(("guest.LDTR.u16Attr %#x\n", pVmcb->guest.LDTR.u16Attr));
4142	Log4(("guest.LDTR.u32Limit %#RX32\n", pVmcb->guest.LDTR.u32Limit));
4143	Log4(("guest.LDTR.u64Base %#RX64\n", pVmcb->guest.LDTR.u64Base));
4144
4145	Log4(("guest.IDTR.u32Limit %#RX32\n", pVmcb->guest.IDTR.u32Limit));
4146	Log4(("guest.IDTR.u64Base %#RX64\n", pVmcb->guest.IDTR.u64Base));
4147
4148	Log4(("guest.TR.u16Sel %RTsel\n", pVmcb->guest.TR.u16Sel));
4149	Log4(("guest.TR.u16Attr %#x\n", pVmcb->guest.TR.u16Attr));
4150	Log4(("guest.TR.u32Limit %#RX32\n", pVmcb->guest.TR.u32Limit));
4151	Log4(("guest.TR.u64Base %#RX64\n", pVmcb->guest.TR.u64Base));
4152
4153	Log4(("guest.u8CPL %#x\n", pVmcb->guest.u8CPL));
4154	Log4(("guest.u64CR0 %#RX64\n", pVmcb->guest.u64CR0));
4155	Log4(("guest.u64CR2 %#RX64\n", pVmcb->guest.u64CR2));
4156	Log4(("guest.u64CR3 %#RX64\n", pVmcb->guest.u64CR3));
4157	Log4(("guest.u64CR4 %#RX64\n", pVmcb->guest.u64CR4));
4158	Log4(("guest.u64DR6 %#RX64\n", pVmcb->guest.u64DR6));
4159	Log4(("guest.u64DR7 %#RX64\n", pVmcb->guest.u64DR7));
4160
4161	Log4(("guest.u64RIP %#RX64\n", pVmcb->guest.u64RIP));
4162	Log4(("guest.u64RSP %#RX64\n", pVmcb->guest.u64RSP));
4163	Log4(("guest.u64RAX %#RX64\n", pVmcb->guest.u64RAX));
4164	Log4(("guest.u64RFlags %#RX64\n", pVmcb->guest.u64RFlags));
4165
4166	Log4(("guest.u64SysEnterCS %#RX64\n", pVmcb->guest.u64SysEnterCS));
4167	Log4(("guest.u64SysEnterEIP %#RX64\n", pVmcb->guest.u64SysEnterEIP));
4168	Log4(("guest.u64SysEnterESP %#RX64\n", pVmcb->guest.u64SysEnterESP));
4169
4170	Log4(("guest.u64EFER %#RX64\n", pVmcb->guest.u64EFER));
4171	Log4(("guest.u64STAR %#RX64\n", pVmcb->guest.u64STAR));
4172	Log4(("guest.u64LSTAR %#RX64\n", pVmcb->guest.u64LSTAR));
4173	Log4(("guest.u64CSTAR %#RX64\n", pVmcb->guest.u64CSTAR));
4174	Log4(("guest.u64SFMASK %#RX64\n", pVmcb->guest.u64SFMASK));
4175	Log4(("guest.u64KernelGSBase %#RX64\n", pVmcb->guest.u64KernelGSBase));
4176	Log4(("guest.u64PAT %#RX64\n", pVmcb->guest.u64PAT));
4177	Log4(("guest.u64DBGCTL %#RX64\n", pVmcb->guest.u64DBGCTL));
4178	Log4(("guest.u64BR_FROM %#RX64\n", pVmcb->guest.u64BR_FROM));
4179	Log4(("guest.u64BR_TO %#RX64\n", pVmcb->guest.u64BR_TO));
4180	Log4(("guest.u64LASTEXCPFROM %#RX64\n", pVmcb->guest.u64LASTEXCPFROM));
4181	Log4(("guest.u64LASTEXCPTO %#RX64\n", pVmcb->guest.u64LASTEXCPTO));
4182
4183	NOREF(pVmcb);
4184	#endif /* VBOX_STRICT */
4185	}
4186	else
4187	Log4Func(("rcVMRun=%d\n", rcVMRun));
4188	}
4189
4190
4191	/**
4192	* Check per-VM and per-VCPU force flag actions that require us to go back to
4193	* ring-3 for one reason or another.
4194	*
4195	* @returns VBox status code (information status code included).
4196	* @retval VINF_SUCCESS if we don't have any actions that require going back to
4197	* ring-3.
4198	* @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
4199	* @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
4200	* interrupts)
4201	* @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
4202	* all EMTs to be in ring-3.
4203	* @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
4204	* @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
4205	* to the EM loop.
4206	*
4207	* @param pVCpu The cross context virtual CPU structure.
4208	*/
4209	static int hmR0SvmCheckForceFlags(PVMCPU pVCpu)
4210	{
4211	Assert(VMMRZCallRing3IsEnabled(pVCpu));
4212	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
4213
4214	/* Could happen as a result of longjump. */
4215	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3))
4216	PGMUpdateCR3(pVCpu, CPUMGetGuestCR3(pVCpu));
4217
4218	/* Update pending interrupts into the APIC's IRR. */
4219	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC))
4220	APICUpdatePendingInterrupts(pVCpu);
4221
4222	PVM pVM = pVCpu->CTX_SUFF(pVM);
4223	if ( VM_FF_IS_PENDING(pVM, !pVCpu->hm.s.fSingleInstruction
4224	? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
4225	\|\| VMCPU_FF_IS_PENDING(pVCpu, !pVCpu->hm.s.fSingleInstruction
4226	? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
4227	{
4228	/* Pending PGM C3 sync. */
4229	if (VMCPU_FF_IS_PENDING(pVCpu,VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
4230	{
4231	int rc = PGMSyncCR3(pVCpu, pVCpu->cpum.GstCtx.cr0, pVCpu->cpum.GstCtx.cr3, pVCpu->cpum.GstCtx.cr4,
4232	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
4233	if (rc != VINF_SUCCESS)
4234	{
4235	Log4Func(("PGMSyncCR3 forcing us back to ring-3. rc=%d\n", rc));
4236	return rc;
4237	}
4238	}
4239
4240	/* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
4241	/* -XXX- what was that about single stepping? */
4242	if ( VM_FF_IS_PENDING(pVM, VM_FF_HM_TO_R3_MASK)
4243	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
4244	{
4245	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
4246	int rc = RT_UNLIKELY(VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
4247	Log4Func(("HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
4248	return rc;
4249	}
4250
4251	/* Pending VM request packets, such as hardware interrupts. */
4252	if ( VM_FF_IS_PENDING(pVM, VM_FF_REQUEST)
4253	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_REQUEST))
4254	{
4255	Log4Func(("Pending VM request forcing us back to ring-3\n"));
4256	return VINF_EM_PENDING_REQUEST;
4257	}
4258
4259	/* Pending PGM pool flushes. */
4260	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
4261	{
4262	Log4Func(("PGM pool flush pending forcing us back to ring-3\n"));
4263	return VINF_PGM_POOL_FLUSH_PENDING;
4264	}
4265
4266	/* Pending DMA requests. */
4267	if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
4268	{
4269	Log4Func(("Pending DMA request forcing us back to ring-3\n"));
4270	return VINF_EM_RAW_TO_R3;
4271	}
4272	}
4273
4274	return VINF_SUCCESS;
4275	}
4276
4277
4278	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
4279	/**
4280	* Does the preparations before executing nested-guest code in AMD-V.
4281	*
4282	* @returns VBox status code (informational status codes included).
4283	* @retval VINF_SUCCESS if we can proceed with running the guest.
4284	* @retval VINF_* scheduling changes, we have to go back to ring-3.
4285	*
4286	* @param pVCpu The cross context virtual CPU structure.
4287	* @param pSvmTransient Pointer to the SVM transient structure.
4288	*
4289	* @remarks Same caveats regarding longjumps as hmR0SvmPreRunGuest applies.
4290	* @sa hmR0SvmPreRunGuest.
4291	*/
4292	static int hmR0SvmPreRunGuestNested(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
4293	{
4294	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
4295	HMSVM_ASSERT_PREEMPT_SAFE(pVCpu);
4296	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
4297
4298	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM_ONLY_IN_IEM
4299	Log2(("hmR0SvmPreRunGuest: Rescheduling to IEM due to nested-hwvirt or forced IEM exec -> VINF_EM_RESCHEDULE_REM\n"));
4300	return VINF_EM_RESCHEDULE_REM;
4301	#endif
4302
4303	/* Check force flag actions that might require us to go back to ring-3. */
4304	int rc = hmR0SvmCheckForceFlags(pVCpu);
4305	if (rc != VINF_SUCCESS)
4306	return rc;
4307
4308	if (TRPMHasTrap(pVCpu))
4309	hmR0SvmTrpmTrapToPendingEvent(pVCpu);
4310	else if (!pVCpu->hm.s.Event.fPending)
4311	{
4312	VBOXSTRICTRC rcStrict = hmR0SvmEvaluatePendingEventNested(pVCpu);
4313	if ( rcStrict != VINF_SUCCESS
4314	\|\| !CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
4315	return VBOXSTRICTRC_VAL(rcStrict);
4316	}
4317
4318	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
4319
4320	/*
4321	* On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
4322	* Just do it in software, see @bugref{8411}.
4323	* NB: If we could continue a task switch exit we wouldn't need to do this.
4324	*/
4325	PVM pVM = pVCpu->CTX_SUFF(pVM);
4326	if (RT_UNLIKELY( !pVM->hm.s.svm.u32Features
4327	&& pVCpu->hm.s.Event.fPending
4328	&& SVM_EVENT_GET_TYPE(pVCpu->hm.s.Event.u64IntInfo) == SVM_EVENT_NMI))
4329	{
4330	return VINF_EM_RAW_INJECT_TRPM_EVENT;
4331	}
4332
4333	#ifdef HMSVM_SYNC_FULL_GUEST_STATE
4334	Assert(!(pCtx->fExtrn & HMSVM_CPUMCTX_EXTRN_ALL));
4335	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
4336	#endif
4337
4338	/*
4339	* Export the nested-guest state bits that are not shared with the host in any way as we
4340	* can longjmp or get preempted in the midst of exporting some of the state.
4341	*/
4342	rc = hmR0SvmExportGuestStateNested(pVCpu);
4343	AssertRCReturn(rc, rc);
4344	STAM_COUNTER_INC(&pVCpu->hm.s.StatExportFull);
4345
4346	/* Ensure we've cached (and hopefully modified) the VMCB for execution using hardware-assisted SVM. */
4347	Assert(pVCpu->hm.s.svm.NstGstVmcbCache.fCacheValid);
4348
4349	/*
4350	* No longjmps to ring-3 from this point on!!!
4351	*
4352	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional,
4353	* better than a kernel panic. This also disables flushing of the R0-logger instance.
4354	*/
4355	VMMRZCallRing3Disable(pVCpu);
4356
4357	/*
4358	* We disable interrupts so that we don't miss any interrupts that would flag preemption
4359	* (IPI/timers etc.) when thread-context hooks aren't used and we've been running with
4360	* preemption disabled for a while. Since this is purly to aid the
4361	* RTThreadPreemptIsPending() code, it doesn't matter that it may temporarily reenable and
4362	* disable interrupt on NT.
4363	*
4364	* We need to check for force-flags that could've possible been altered since we last
4365	* checked them (e.g. by PDMGetInterrupt() leaving the PDM critical section,
4366	* see @bugref{6398}).
4367	*
4368	* We also check a couple of other force-flags as a last opportunity to get the EMT back
4369	* to ring-3 before executing guest code.
4370	*/
4371	pSvmTransient->fEFlags = ASMIntDisableFlags();
4372	if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
4373	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
4374	{
4375	ASMSetFlags(pSvmTransient->fEFlags);
4376	VMMRZCallRing3Enable(pVCpu);
4377	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
4378	return VINF_EM_RAW_TO_R3;
4379	}
4380	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
4381	{
4382	ASMSetFlags(pSvmTransient->fEFlags);
4383	VMMRZCallRing3Enable(pVCpu);
4384	STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
4385	return VINF_EM_RAW_INTERRUPT;
4386	}
4387	return VINF_SUCCESS;
4388	}
4389	#endif
4390
4391
4392	/**
4393	* Does the preparations before executing guest code in AMD-V.
4394	*
4395	* This may cause longjmps to ring-3 and may even result in rescheduling to the
4396	* recompiler. We must be cautious what we do here regarding committing
4397	* guest-state information into the VMCB assuming we assuredly execute the guest
4398	* in AMD-V. If we fall back to the recompiler after updating the VMCB and
4399	* clearing the common-state (TRPM/forceflags), we must undo those changes so
4400	* that the recompiler can (and should) use them when it resumes guest
4401	* execution. Otherwise such operations must be done when we can no longer
4402	* exit to ring-3.
4403	*
4404	* @returns VBox status code (informational status codes included).
4405	* @retval VINF_SUCCESS if we can proceed with running the guest.
4406	* @retval VINF_* scheduling changes, we have to go back to ring-3.
4407	*
4408	* @param pVCpu The cross context virtual CPU structure.
4409	* @param pSvmTransient Pointer to the SVM transient structure.
4410	*/
4411	static int hmR0SvmPreRunGuest(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
4412	{
4413	HMSVM_ASSERT_PREEMPT_SAFE(pVCpu);
4414	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(&pVCpu->cpum.GstCtx);
4415
4416	/* Check force flag actions that might require us to go back to ring-3. */
4417	int rc = hmR0SvmCheckForceFlags(pVCpu);
4418	if (rc != VINF_SUCCESS)
4419	return rc;
4420
4421	if (TRPMHasTrap(pVCpu))
4422	hmR0SvmTrpmTrapToPendingEvent(pVCpu);
4423	else if (!pVCpu->hm.s.Event.fPending)
4424	hmR0SvmEvaluatePendingEvent(pVCpu);
4425
4426	/*
4427	* On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
4428	* Just do it in software, see @bugref{8411}.
4429	* NB: If we could continue a task switch exit we wouldn't need to do this.
4430	*/
4431	PVM pVM = pVCpu->CTX_SUFF(pVM);
4432	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending && (((pVCpu->hm.s.Event.u64IntInfo >> 8) & 7) == SVM_EVENT_NMI)))
4433	if (RT_UNLIKELY(!pVM->hm.s.svm.u32Features))
4434	return VINF_EM_RAW_INJECT_TRPM_EVENT;
4435
4436	#ifdef HMSVM_SYNC_FULL_GUEST_STATE
4437	Assert(!(pVCpu->cpum.GstCtx->fExtrn & HMSVM_CPUMCTX_EXTRN_ALL));
4438	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
4439	#endif
4440
4441	/*
4442	* Export the guest state bits that are not shared with the host in any way as we can
4443	* longjmp or get preempted in the midst of exporting some of the state.
4444	*/
4445	rc = hmR0SvmExportGuestState(pVCpu);
4446	AssertRCReturn(rc, rc);
4447	STAM_COUNTER_INC(&pVCpu->hm.s.StatExportFull);
4448
4449	/*
4450	* If we're not intercepting TPR changes in the guest, save the guest TPR before the
4451	* world-switch so we can update it on the way back if the guest changed the TPR.
4452	*/
4453	if (pVCpu->hm.s.svm.fSyncVTpr)
4454	{
4455	PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
4456	if (pVM->hm.s.fTPRPatchingActive)
4457	pSvmTransient->u8GuestTpr = pVmcb->guest.u64LSTAR;
4458	else
4459	pSvmTransient->u8GuestTpr = pVmcb->ctrl.IntCtrl.n.u8VTPR;
4460	}
4461
4462	/*
4463	* No longjmps to ring-3 from this point on!!!
4464	*
4465	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional,
4466	* better than a kernel panic. This also disables flushing of the R0-logger instance.
4467	*/
4468	VMMRZCallRing3Disable(pVCpu);
4469
4470	/*
4471	* We disable interrupts so that we don't miss any interrupts that would flag preemption
4472	* (IPI/timers etc.) when thread-context hooks aren't used and we've been running with
4473	* preemption disabled for a while. Since this is purly to aid the
4474	* RTThreadPreemptIsPending() code, it doesn't matter that it may temporarily reenable and
4475	* disable interrupt on NT.
4476	*
4477	* We need to check for force-flags that could've possible been altered since we last
4478	* checked them (e.g. by PDMGetInterrupt() leaving the PDM critical section,
4479	* see @bugref{6398}).
4480	*
4481	* We also check a couple of other force-flags as a last opportunity to get the EMT back
4482	* to ring-3 before executing guest code.
4483	*/
4484	pSvmTransient->fEFlags = ASMIntDisableFlags();
4485	if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
4486	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
4487	{
4488	ASMSetFlags(pSvmTransient->fEFlags);
4489	VMMRZCallRing3Enable(pVCpu);
4490	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
4491	return VINF_EM_RAW_TO_R3;
4492	}
4493	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
4494	{
4495	ASMSetFlags(pSvmTransient->fEFlags);
4496	VMMRZCallRing3Enable(pVCpu);
4497	STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
4498	return VINF_EM_RAW_INTERRUPT;
4499	}
4500
4501	return VINF_SUCCESS;
4502	}
4503
4504
4505	/**
4506	* Prepares to run guest (or nested-guest) code in AMD-V and we've committed to
4507	* doing so.
4508	*
4509	* This means there is no backing out to ring-3 or anywhere else at this point.
4510	*
4511	* @param pVCpu The cross context virtual CPU structure.
4512	* @param pSvmTransient Pointer to the SVM transient structure.
4513	*
4514	* @remarks Called with preemption disabled.
4515	* @remarks No-long-jump zone!!!
4516	*/
4517	static void hmR0SvmPreRunGuestCommitted(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
4518	{
4519	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
4520	Assert(VMMR0IsLogFlushDisabled(pVCpu));
4521	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
4522
4523	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
4524	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
4525
4526	PVM pVM = pVCpu->CTX_SUFF(pVM);
4527	PSVMVMCB pVmcb = pSvmTransient->pVmcb;
4528
4529	hmR0SvmInjectPendingEvent(pVCpu, pVmcb);
4530
4531	if (!CPUMIsGuestFPUStateActive(pVCpu))
4532	{
4533	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestFpuState, x);
4534	CPUMR0LoadGuestFPU(pVM, pVCpu); /* (Ignore rc, no need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
4535	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestFpuState, x);
4536	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadGuestFpu);
4537	}
4538
4539	/* Load the state shared between host and guest (FPU, debug). */
4540	if (pVCpu->hm.s.fCtxChanged & HM_CHANGED_SVM_HOST_GUEST_SHARED_STATE)
4541	hmR0SvmExportSharedState(pVCpu, pVmcb);
4542
4543	pVCpu->hm.s.fCtxChanged &= ~HM_CHANGED_HOST_CONTEXT; /* Preemption might set this, nothing to do on AMD-V. */
4544	AssertMsg(!pVCpu->hm.s.fCtxChanged, ("fCtxChanged=%#RX64\n", pVCpu->hm.s.fCtxChanged));
4545
4546	PHMGLOBALCPUINFO pHostCpu = hmR0GetCurrentCpu();
4547	RTCPUID const idHostCpu = pHostCpu->idCpu;
4548	bool const fMigratedHostCpu = idHostCpu != pVCpu->hm.s.idLastCpu;
4549
4550	/* Setup TSC offsetting. */
4551	if ( pSvmTransient->fUpdateTscOffsetting
4552	\|\| fMigratedHostCpu)
4553	{
4554	hmR0SvmUpdateTscOffsetting(pVCpu, pVmcb);
4555	pSvmTransient->fUpdateTscOffsetting = false;
4556	}
4557
4558	/* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
4559	if (fMigratedHostCpu)
4560	pVmcb->ctrl.u32VmcbCleanBits = 0;
4561
4562	/* Store status of the shared guest-host state at the time of VMRUN. */
4563	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
4564	if (CPUMIsGuestInLongModeEx(&pVCpu->cpum.GstCtx))
4565	{
4566	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
4567	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
4568	}
4569	else
4570	#endif
4571	{
4572	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
4573	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
4574	}
4575
4576	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
4577	uint8_t *pbMsrBitmap;
4578	if (!pSvmTransient->fIsNestedGuest)
4579	pbMsrBitmap = (uint8_t *)pVCpu->hm.s.svm.pvMsrBitmap;
4580	else
4581	{
4582	hmR0SvmMergeMsrpmNested(pHostCpu, pVCpu);
4583
4584	/* Update the nested-guest VMCB with the newly merged MSRPM (clean bits updated below). */
4585	pVmcb->ctrl.u64MSRPMPhysAddr = pHostCpu->n.svm.HCPhysNstGstMsrpm;
4586	pbMsrBitmap = (uint8_t *)pHostCpu->n.svm.pvNstGstMsrpm;
4587	}
4588	#else
4589	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
4590	#endif
4591
4592	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB flushing, set this across the world switch. */
4593	/* Flush the appropriate tagged-TLB entries. */
4594	hmR0SvmFlushTaggedTlb(pVCpu, pVmcb, pHostCpu);
4595	Assert(pVCpu->hm.s.idLastCpu == idHostCpu);
4596
4597	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
4598
4599	TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
4600	to start executing. */
4601
4602	/*
4603	* Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that RDTSCPs
4604	* (that don't cause exits) reads the guest MSR, see @bugref{3324}.
4605	*
4606	* This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
4607	*/
4608	if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
4609	&& !(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSCP))
4610	{
4611	uint64_t const uGuestTscAux = CPUMGetGuestTscAux(pVCpu);
4612	pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
4613	if (uGuestTscAux != pVCpu->hm.s.u64HostTscAux)
4614	ASMWrMsr(MSR_K8_TSC_AUX, uGuestTscAux);
4615	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
4616	pSvmTransient->fRestoreTscAuxMsr = true;
4617	}
4618	else
4619	{
4620	hmR0SvmSetMsrPermission(pVCpu, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
4621	pSvmTransient->fRestoreTscAuxMsr = false;
4622	}
4623	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
4624
4625	/*
4626	* If VMCB Clean bits isn't supported by the CPU or exposed to the guest in the nested
4627	* virtualization case, mark all state-bits as dirty indicating to the CPU to re-load
4628	* from the VMCB.
4629	*/
4630	bool const fSupportsVmcbCleanBits = hmR0SvmSupportsVmcbCleanBits(pVCpu);
4631	if (!fSupportsVmcbCleanBits)
4632	pVmcb->ctrl.u32VmcbCleanBits = 0;
4633	}
4634
4635
4636	/**
4637	* Wrapper for running the guest (or nested-guest) code in AMD-V.
4638	*
4639	* @returns VBox strict status code.
4640	* @param pVCpu The cross context virtual CPU structure.
4641	* @param HCPhysVmcb The host physical address of the VMCB.
4642	*
4643	* @remarks No-long-jump zone!!!
4644	*/
4645	DECLINLINE(int) hmR0SvmRunGuest(PVMCPU pVCpu, RTHCPHYS HCPhysVmcb)
4646	{
4647	/* Mark that HM is the keeper of all guest-CPU registers now that we're going to execute guest code. */
4648	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
4649	pCtx->fExtrn \|= HMSVM_CPUMCTX_EXTRN_ALL \| CPUMCTX_EXTRN_KEEPER_HM;
4650
4651	/*
4652	* 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses
4653	* floating-point operations using SSE instructions. Some XMM registers (XMM6-XMM15) are
4654	* callee-saved and thus the need for this XMM wrapper.
4655	*
4656	* Refer MSDN "Configuring Programs for 64-bit/x64 Software Conventions / Register Usage".
4657	*/
4658	PVM pVM = pVCpu->CTX_SUFF(pVM);
4659	#ifdef VBOX_WITH_KERNEL_USING_XMM
4660	return hmR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, HCPhysVmcb, pCtx, pVM, pVCpu, pVCpu->hm.s.svm.pfnVMRun);
4661	#else
4662	return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, HCPhysVmcb, pCtx, pVM, pVCpu);
4663	#endif
4664	}
4665
4666
4667	/**
4668	* Undoes the TSC offset applied for an SVM nested-guest and returns the TSC
4669	* value for the guest.
4670	*
4671	* @returns The TSC offset after undoing any nested-guest TSC offset.
4672	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4673	* @param uTicks The nested-guest TSC.
4674	*
4675	* @note If you make any changes to this function, please check if
4676	* hmR0SvmNstGstUndoTscOffset() needs adjusting.
4677	*
4678	* @sa HMSvmNstGstApplyTscOffset().
4679	*/
4680	DECLINLINE(uint64_t) hmR0SvmNstGstUndoTscOffset(PVMCPU pVCpu, uint64_t uTicks)
4681	{
4682	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
4683	Assert(pVmcbNstGstCache->fCacheValid);
4684	return uTicks - pVmcbNstGstCache->u64TSCOffset;
4685	}
4686
4687
4688	/**
4689	* Performs some essential restoration of state after running guest (or
4690	* nested-guest) code in AMD-V.
4691	*
4692	* @param pVCpu The cross context virtual CPU structure.
4693	* @param pSvmTransient Pointer to the SVM transient structure.
4694	* @param rcVMRun Return code of VMRUN.
4695	*
4696	* @remarks Called with interrupts disabled.
4697	* @remarks No-long-jump zone!!! This function will however re-enable longjmps
4698	* unconditionally when it is safe to do so.
4699	*/
4700	static void hmR0SvmPostRunGuest(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient, int rcVMRun)
4701	{
4702	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
4703
4704	uint64_t const uHostTsc = ASMReadTSC(); /* Read the TSC as soon as possible. */
4705	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB flushing. */
4706	ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for EMT poking. */
4707
4708	PSVMVMCB pVmcb = pSvmTransient->pVmcb;
4709	PSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
4710
4711	/* TSC read must be done early for maximum accuracy. */
4712	if (!(pVmcbCtrl->u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSC))
4713	{
4714	if (!pSvmTransient->fIsNestedGuest)
4715	TMCpuTickSetLastSeen(pVCpu, uHostTsc + pVmcbCtrl->u64TSCOffset);
4716	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
4717	else
4718	{
4719	/* The nested-guest VMCB TSC offset shall eventually be restored on #VMEXIT via HMSvmNstGstVmExitNotify(). */
4720	uint64_t const uGstTsc = hmR0SvmNstGstUndoTscOffset(pVCpu, uHostTsc + pVmcbCtrl->u64TSCOffset);
4721	TMCpuTickSetLastSeen(pVCpu, uGstTsc);
4722	}
4723	#endif
4724	}
4725
4726	if (pSvmTransient->fRestoreTscAuxMsr)
4727	{
4728	uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
4729	CPUMSetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
4730	if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
4731	ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
4732	}
4733
4734	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatPreExit, x);
4735	TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
4736	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
4737
4738	Assert(!(ASMGetFlags() & X86_EFL_IF));
4739	ASMSetFlags(pSvmTransient->fEFlags); /* Enable interrupts. */
4740	VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
4741
4742	/* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
4743	if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
4744	{
4745	Log4Func(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
4746	return;
4747	}
4748
4749	pSvmTransient->u64ExitCode = pVmcbCtrl->u64ExitCode; /* Save the #VMEXIT reason. */
4750	pVmcbCtrl->u32VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL; /* Mark the VMCB-state cache as unmodified by VMM. */
4751	pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
4752	pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
4753
4754	#ifdef HMSVM_SYNC_FULL_GUEST_STATE
4755	hmR0SvmImportGuestState(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
4756	Assert(!(pVCpu->cpum.GstCtx.fExtrn & HMSVM_CPUMCTX_EXTRN_ALL));
4757	#else
4758	/*
4759	* Always import the following:
4760	*
4761	* - RIP for exit optimizations and evaluating event injection on re-entry.
4762	* - RFLAGS for evaluating event injection on VM re-entry and for exporting shared debug
4763	* state on preemption.
4764	* - Interrupt shadow, GIF for evaluating event injection on VM re-entry.
4765	* - CS for exit optimizations.
4766	* - RAX, RSP for simplifying assumptions on GPRs. All other GPRs are swapped by the
4767	* assembly switcher code.
4768	* - Shared state (only DR7 currently) for exporting shared debug state on preemption.
4769	*/
4770	hmR0SvmImportGuestState(pVCpu, CPUMCTX_EXTRN_RIP
4771	\| CPUMCTX_EXTRN_RFLAGS
4772	\| CPUMCTX_EXTRN_RAX
4773	\| CPUMCTX_EXTRN_RSP
4774	\| CPUMCTX_EXTRN_CS
4775	\| CPUMCTX_EXTRN_HWVIRT
4776	\| CPUMCTX_EXTRN_HM_SVM_INT_SHADOW
4777	\| CPUMCTX_EXTRN_HM_SVM_HWVIRT_VIRQ
4778	\| HMSVM_CPUMCTX_SHARED_STATE);
4779	#endif
4780
4781	if ( pSvmTransient->u64ExitCode != SVM_EXIT_INVALID
4782	&& pVCpu->hm.s.svm.fSyncVTpr)
4783	{
4784	Assert(!pSvmTransient->fIsNestedGuest);
4785	/* TPR patching (for 32-bit guests) uses LSTAR MSR for holding the TPR value, otherwise uses the VTPR. */
4786	if ( pVCpu->CTX_SUFF(pVM)->hm.s.fTPRPatchingActive
4787	&& (pVmcb->guest.u64LSTAR & 0xff) != pSvmTransient->u8GuestTpr)
4788	{
4789	int rc = APICSetTpr(pVCpu, pVmcb->guest.u64LSTAR & 0xff);
4790	AssertRC(rc);
4791	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
4792	}
4793	/* Sync TPR when we aren't intercepting CR8 writes. */
4794	else if (pSvmTransient->u8GuestTpr != pVmcbCtrl->IntCtrl.n.u8VTPR)
4795	{
4796	int rc = APICSetTpr(pVCpu, pVmcbCtrl->IntCtrl.n.u8VTPR << 4);
4797	AssertRC(rc);
4798	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
4799	}
4800	}
4801
4802	#ifdef DEBUG_ramshankar
4803	if (CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
4804	{
4805	hmR0SvmImportGuestState(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
4806	hmR0SvmLogState(pVCpu, pVmcb, pVCpu->cpum.GstCtx, "hmR0SvmPostRunGuestNested", HMSVM_LOG_ALL & ~HMSVM_LOG_LBR,
4807	0 /* uVerbose */);
4808	}
4809	#endif
4810
4811	HMSVM_CPUMCTX_ASSERT(pVCpu, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
4812	EMHistoryAddExit(pVCpu, EMEXIT_MAKE_FT(EMEXIT_F_KIND_SVM, pSvmTransient->u64ExitCode & EMEXIT_F_TYPE_MASK),
4813	pVCpu->cpum.GstCtx.cs.u64Base + pVCpu->cpum.GstCtx.rip, uHostTsc);
4814	}
4815
4816
4817	/**
4818	* Runs the guest code using AMD-V.
4819	*
4820	* @returns VBox status code.
4821	* @param pVCpu The cross context virtual CPU structure.
4822	* @param pcLoops Pointer to the number of executed loops.
4823	*/
4824	static int hmR0SvmRunGuestCodeNormal(PVMCPU pVCpu, uint32_t *pcLoops)
4825	{
4826	uint32_t const cMaxResumeLoops = pVCpu->CTX_SUFF(pVM)->hm.s.cMaxResumeLoops;
4827	Assert(pcLoops);
4828	Assert(*pcLoops <= cMaxResumeLoops);
4829
4830	SVMTRANSIENT SvmTransient;
4831	RT_ZERO(SvmTransient);
4832	SvmTransient.fUpdateTscOffsetting = true;
4833	SvmTransient.pVmcb = pVCpu->hm.s.svm.pVmcb;
4834
4835	int rc = VERR_INTERNAL_ERROR_5;
4836	for (;;)
4837	{
4838	Assert(!HMR0SuspendPending());
4839	HMSVM_ASSERT_CPU_SAFE(pVCpu);
4840
4841	/* Preparatory work for running nested-guest code, this may force us to return to
4842	ring-3. This bugger disables interrupts on VINF_SUCCESS! */
4843	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
4844	rc = hmR0SvmPreRunGuest(pVCpu, &SvmTransient);
4845	if (rc != VINF_SUCCESS)
4846	break;
4847
4848	/*
4849	* No longjmps to ring-3 from this point on!!!
4850	*
4851	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional,
4852	* better than a kernel panic. This also disables flushing of the R0-logger instance.
4853	*/
4854	hmR0SvmPreRunGuestCommitted(pVCpu, &SvmTransient);
4855	rc = hmR0SvmRunGuest(pVCpu, pVCpu->hm.s.svm.HCPhysVmcb);
4856
4857	/* Restore any residual host-state and save any bits shared between host and guest
4858	into the guest-CPU state. Re-enables interrupts! */
4859	hmR0SvmPostRunGuest(pVCpu, &SvmTransient, rc);
4860
4861	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
4862	\|\| SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
4863	{
4864	if (rc == VINF_SUCCESS)
4865	rc = VERR_SVM_INVALID_GUEST_STATE;
4866	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatPreExit, x);
4867	hmR0SvmReportWorldSwitchError(pVCpu, rc);
4868	break;
4869	}
4870
4871	/* Handle the #VMEXIT. */
4872	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
4873	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatPreExit, &pVCpu->hm.s.StatExitHandling, x);
4874	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, &pVCpu->cpum.GstCtx, SvmTransient.u64ExitCode, pVCpu->hm.s.svm.pVmcb);
4875	rc = hmR0SvmHandleExit(pVCpu, &SvmTransient);
4876	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitHandling, x);
4877	if (rc != VINF_SUCCESS)
4878	break;
4879	if (++(*pcLoops) >= cMaxResumeLoops)
4880	{
4881	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
4882	rc = VINF_EM_RAW_INTERRUPT;
4883	break;
4884	}
4885	}
4886
4887	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
4888	return rc;
4889	}
4890
4891
4892	/**
4893	* Runs the guest code using AMD-V in single step mode.
4894	*
4895	* @returns VBox status code.
4896	* @param pVCpu The cross context virtual CPU structure.
4897	* @param pcLoops Pointer to the number of executed loops.
4898	*/
4899	static int hmR0SvmRunGuestCodeStep(PVMCPU pVCpu, uint32_t *pcLoops)
4900	{
4901	uint32_t const cMaxResumeLoops = pVCpu->CTX_SUFF(pVM)->hm.s.cMaxResumeLoops;
4902	Assert(pcLoops);
4903	Assert(*pcLoops <= cMaxResumeLoops);
4904
4905	SVMTRANSIENT SvmTransient;
4906	RT_ZERO(SvmTransient);
4907	SvmTransient.fUpdateTscOffsetting = true;
4908	SvmTransient.pVmcb = pVCpu->hm.s.svm.pVmcb;
4909
4910	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
4911	uint16_t uCsStart = pCtx->cs.Sel;
4912	uint64_t uRipStart = pCtx->rip;
4913
4914	int rc = VERR_INTERNAL_ERROR_5;
4915	for (;;)
4916	{
4917	Assert(!HMR0SuspendPending());
4918	AssertMsg(pVCpu->hm.s.idEnteredCpu == RTMpCpuId(),
4919	("Illegal migration! Entered on CPU %u Current %u cLoops=%u\n", (unsigned)pVCpu->hm.s.idEnteredCpu,
4920	(unsigned)RTMpCpuId(), *pcLoops));
4921
4922	/* Preparatory work for running nested-guest code, this may force us to return to
4923	ring-3. This bugger disables interrupts on VINF_SUCCESS! */
4924	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
4925	rc = hmR0SvmPreRunGuest(pVCpu, &SvmTransient);
4926	if (rc != VINF_SUCCESS)
4927	break;
4928
4929	/*
4930	* No longjmps to ring-3 from this point on!!!
4931	*
4932	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional,
4933	* better than a kernel panic. This also disables flushing of the R0-logger instance.
4934	*/
4935	VMMRZCallRing3Disable(pVCpu);
4936	VMMRZCallRing3RemoveNotification(pVCpu);
4937	hmR0SvmPreRunGuestCommitted(pVCpu, &SvmTransient);
4938
4939	rc = hmR0SvmRunGuest(pVCpu, pVCpu->hm.s.svm.HCPhysVmcb);
4940
4941	/* Restore any residual host-state and save any bits shared between host and guest
4942	into the guest-CPU state. Re-enables interrupts! */
4943	hmR0SvmPostRunGuest(pVCpu, &SvmTransient, rc);
4944
4945	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
4946	\|\| SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
4947	{
4948	if (rc == VINF_SUCCESS)
4949	rc = VERR_SVM_INVALID_GUEST_STATE;
4950	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatPreExit, x);
4951	hmR0SvmReportWorldSwitchError(pVCpu, rc);
4952	return rc;
4953	}
4954
4955	/* Handle the #VMEXIT. */
4956	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
4957	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatPreExit, &pVCpu->hm.s.StatExitHandling, x);
4958	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pVCpu->hm.s.svm.pVmcb);
4959	rc = hmR0SvmHandleExit(pVCpu, &SvmTransient);
4960	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitHandling, x);
4961	if (rc != VINF_SUCCESS)
4962	break;
4963	if (++(*pcLoops) >= cMaxResumeLoops)
4964	{
4965	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
4966	rc = VINF_EM_RAW_INTERRUPT;
4967	break;
4968	}
4969
4970	/*
4971	* Did the RIP change, if so, consider it a single step.
4972	* Otherwise, make sure one of the TFs gets set.
4973	*/
4974	if ( pCtx->rip != uRipStart
4975	\|\| pCtx->cs.Sel != uCsStart)
4976	{
4977	rc = VINF_EM_DBG_STEPPED;
4978	break;
4979	}
4980	pVCpu->hm.s.fCtxChanged \|= HM_CHANGED_GUEST_DR_MASK;
4981	}
4982
4983	/*
4984	* Clear the X86_EFL_TF if necessary.
4985	*/
4986	if (pVCpu->hm.s.fClearTrapFlag)
4987	{
4988	pVCpu->hm.s.fClearTrapFlag = false;
4989	pCtx->eflags.Bits.u1TF = 0;
4990	}
4991
4992	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
4993	return rc;
4994	}
4995
4996	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
4997	/**
4998	* Runs the nested-guest code using AMD-V.
4999	*
5000	* @returns VBox status code.
5001	* @param pVCpu The cross context virtual CPU structure.
5002	* @param pcLoops Pointer to the number of executed loops. If we're switching
5003	* from the guest-code execution loop to this nested-guest
5004	* execution loop pass the remainder value, else pass 0.
5005	*/
5006	static int hmR0SvmRunGuestCodeNested(PVMCPU pVCpu, uint32_t *pcLoops)
5007	{
5008	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
5009	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
5010	Assert(pcLoops);
5011	Assert(*pcLoops <= pVCpu->CTX_SUFF(pVM)->hm.s.cMaxResumeLoops);
5012
5013	SVMTRANSIENT SvmTransient;
5014	RT_ZERO(SvmTransient);
5015	SvmTransient.fUpdateTscOffsetting = true;
5016	SvmTransient.pVmcb = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
5017	SvmTransient.fIsNestedGuest = true;
5018
5019	int rc = VERR_INTERNAL_ERROR_4;
5020	for (;;)
5021	{
5022	Assert(!HMR0SuspendPending());
5023	HMSVM_ASSERT_CPU_SAFE(pVCpu);
5024
5025	/* Preparatory work for running nested-guest code, this may force us to return to
5026	ring-3. This bugger disables interrupts on VINF_SUCCESS! */
5027	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
5028	rc = hmR0SvmPreRunGuestNested(pVCpu, &SvmTransient);
5029	if ( rc != VINF_SUCCESS
5030	\|\| !CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
5031	{
5032	break;
5033	}
5034
5035	/*
5036	* No longjmps to ring-3 from this point on!!!
5037	*
5038	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional,
5039	* better than a kernel panic. This also disables flushing of the R0-logger instance.
5040	*/
5041	hmR0SvmPreRunGuestCommitted(pVCpu, &SvmTransient);
5042
5043	rc = hmR0SvmRunGuest(pVCpu, pCtx->hwvirt.svm.HCPhysVmcb);
5044
5045	/* Restore any residual host-state and save any bits shared between host and guest
5046	into the guest-CPU state. Re-enables interrupts! */
5047	hmR0SvmPostRunGuest(pVCpu, &SvmTransient, rc);
5048
5049	if (RT_LIKELY( rc == VINF_SUCCESS
5050	&& SvmTransient.u64ExitCode != SVM_EXIT_INVALID))
5051	{ /* extremely likely */ }
5052	else
5053	{
5054	/* VMRUN failed, shouldn't really happen, Guru. */
5055	if (rc != VINF_SUCCESS)
5056	break;
5057
5058	/* Invalid nested-guest state. Cause a #VMEXIT but assert on strict builds. */
5059	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
5060	AssertMsgFailed(("Invalid nested-guest state. rc=%Rrc u64ExitCode=%#RX64\n", rc, SvmTransient.u64ExitCode));
5061	rc = VBOXSTRICTRC_TODO(IEMExecSvmVmexit(pVCpu, SVM_EXIT_INVALID, 0, 0));
5062	break;
5063	}
5064
5065	/* Handle the #VMEXIT. */
5066	HMSVM_NESTED_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
5067	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatPreExit, &pVCpu->hm.s.StatExitHandling, x);
5068	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pCtx->hwvirt.svm.CTX_SUFF(pVmcb));
5069	rc = hmR0SvmHandleExitNested(pVCpu, &SvmTransient);
5070	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExitHandling, x);
5071	if ( rc != VINF_SUCCESS
5072	\|\| !CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
5073	break;
5074	if (++(*pcLoops) >= pVCpu->CTX_SUFF(pVM)->hm.s.cMaxResumeLoops)
5075	{
5076	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
5077	rc = VINF_EM_RAW_INTERRUPT;
5078	break;
5079	}
5080
5081	/** @todo handle single-stepping */
5082	}
5083
5084	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
5085	return rc;
5086	}
5087	#endif
5088
5089
5090	/**
5091	* Runs the guest code using AMD-V.
5092	*
5093	* @returns Strict VBox status code.
5094	* @param pVCpu The cross context virtual CPU structure.
5095	*/
5096	VMMR0DECL(VBOXSTRICTRC) SVMR0RunGuestCode(PVMCPU pVCpu)
5097	{
5098	Assert(VMMRZCallRing3IsEnabled(pVCpu));
5099	HMSVM_ASSERT_PREEMPT_SAFE(pVCpu);
5100	VMMRZCallRing3SetNotification(pVCpu, hmR0SvmCallRing3Callback, NULL /* pvUser */);
5101
5102	uint32_t cLoops = 0;
5103	int rc;
5104	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
5105	if (!CPUMIsGuestInSvmNestedHwVirtMode(&pVCpu->cpum.GstCtx))
5106	#endif
5107	{
5108	if (!pVCpu->hm.s.fSingleInstruction)
5109	rc = hmR0SvmRunGuestCodeNormal(pVCpu, &cLoops);
5110	else
5111	rc = hmR0SvmRunGuestCodeStep(pVCpu, &cLoops);
5112	}
5113	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
5114	else
5115	{
5116	rc = VINF_SVM_VMRUN;
5117	}
5118
5119	/* Re-check the nested-guest condition here as we may be transitioning from the normal
5120	execution loop into the nested-guest, hence this is not placed in the 'else' part above. */
5121	if (rc == VINF_SVM_VMRUN)
5122	{
5123	rc = hmR0SvmRunGuestCodeNested(pVCpu, &cLoops);
5124	if (rc == VINF_SVM_VMEXIT)
5125	rc = VINF_SUCCESS;
5126	}
5127	#endif
5128
5129	/* Fixup error codes. */
5130	if (rc == VERR_EM_INTERPRETER)
5131	rc = VINF_EM_RAW_EMULATE_INSTR;
5132	else if (rc == VINF_EM_RESET)
5133	rc = VINF_EM_TRIPLE_FAULT;
5134
5135	/* Prepare to return to ring-3. This will remove longjmp notifications. */
5136	rc = hmR0SvmExitToRing3(pVCpu, rc);
5137	Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
5138	return rc;
5139	}
5140
5141
5142	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
5143	/**
5144	* Determines whether an IOIO intercept is active for the nested-guest or not.
5145	*
5146	* @param pvIoBitmap Pointer to the nested-guest IO bitmap.
5147	* @param pIoExitInfo Pointer to the SVMIOIOEXITINFO.
5148	*/
5149	static bool hmR0SvmIsIoInterceptActive(void *pvIoBitmap, PSVMIOIOEXITINFO pIoExitInfo)
5150	{
5151	const uint16_t u16Port = pIoExitInfo->n.u16Port;
5152	const SVMIOIOTYPE enmIoType = (SVMIOIOTYPE)pIoExitInfo->n.u1Type;
5153	const uint8_t cbReg = (pIoExitInfo->u >> SVM_IOIO_OP_SIZE_SHIFT) & 7;
5154	const uint8_t cAddrSizeBits = ((pIoExitInfo->u >> SVM_IOIO_ADDR_SIZE_SHIFT) & 7) << 4;
5155	const uint8_t iEffSeg = pIoExitInfo->n.u3Seg;
5156	const bool fRep = pIoExitInfo->n.u1Rep;
5157	const bool fStrIo = pIoExitInfo->n.u1Str;
5158
5159	return HMSvmIsIOInterceptActive(pvIoBitmap, u16Port, enmIoType, cbReg, cAddrSizeBits, iEffSeg, fRep, fStrIo,
5160	NULL /* pIoExitInfo */);
5161	}
5162
5163
5164	/**
5165	* Handles a nested-guest \#VMEXIT (for all EXITCODE values except
5166	* SVM_EXIT_INVALID).
5167	*
5168	* @returns VBox status code (informational status codes included).
5169	* @param pVCpu The cross context virtual CPU structure.
5170	* @param pSvmTransient Pointer to the SVM transient structure.
5171	*/
5172	static int hmR0SvmHandleExitNested(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
5173	{
5174	HMSVM_ASSERT_IN_NESTED_GUEST(&pVCpu->cpum.GstCtx);
5175	Assert(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID);
5176	Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
5177
5178	/** @todo Figure out why using IEM_CPUMCTX_EXTRN_SVM_VMEXIT_MASK instead of
5179	* HMSVM_CPUMCTX_EXTRN_ALL breaks nested guests (XP Pro, DSL etc.), see
5180	* also HMSvmNstGstVmExitNotify(). */
5181	#define NST_GST_VMEXIT_CALL_RET(a_pVCpu, a_uExitCode, a_uExitInfo1, a_uExitInfo2) \
5182	do { \
5183	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL); \
5184	return VBOXSTRICTRC_TODO(IEMExecSvmVmexit((a_pVCpu), (a_uExitCode), (a_uExitInfo1), (a_uExitInfo2))); \
5185	} while (0)
5186
5187	/*
5188	* For all the #VMEXITs here we primarily figure out if the #VMEXIT is expected by the
5189	* nested-guest. If it isn't, it should be handled by the (outer) guest.
5190	*/
5191	PSVMVMCB pVmcbNstGst = pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pVmcb);
5192	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
5193	uint64_t const uExitCode = pVmcbNstGstCtrl->u64ExitCode;
5194	uint64_t const uExitInfo1 = pVmcbNstGstCtrl->u64ExitInfo1;
5195	uint64_t const uExitInfo2 = pVmcbNstGstCtrl->u64ExitInfo2;
5196
5197	Assert(uExitCode == pVmcbNstGstCtrl->u64ExitCode);
5198	switch (uExitCode)
5199	{
5200	case SVM_EXIT_CPUID:
5201	{
5202	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_CPUID))
5203	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5204	return hmR0SvmExitCpuid(pVCpu, pSvmTransient);
5205	}
5206
5207	case SVM_EXIT_RDTSC:
5208	{
5209	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_RDTSC))
5210	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5211	return hmR0SvmExitRdtsc(pVCpu, pSvmTransient);
5212	}
5213
5214	case SVM_EXIT_RDTSCP:
5215	{
5216	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_RDTSCP))
5217	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5218	return hmR0SvmExitRdtscp(pVCpu, pSvmTransient);
5219	}
5220
5221	case SVM_EXIT_MONITOR:
5222	{
5223	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_MONITOR))
5224	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5225	return hmR0SvmExitMonitor(pVCpu, pSvmTransient);
5226	}
5227
5228	case SVM_EXIT_MWAIT:
5229	{
5230	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_MWAIT))
5231	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5232	return hmR0SvmExitMwait(pVCpu, pSvmTransient);
5233	}
5234
5235	case SVM_EXIT_HLT:
5236	{
5237	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_HLT))
5238	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5239	return hmR0SvmExitHlt(pVCpu, pSvmTransient);
5240	}
5241
5242	case SVM_EXIT_MSR:
5243	{
5244	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_MSR_PROT))
5245	{
5246	uint32_t const idMsr = pVCpu->cpum.GstCtx.ecx;
5247	uint16_t offMsrpm;
5248	uint8_t uMsrpmBit;
5249	int rc = HMSvmGetMsrpmOffsetAndBit(idMsr, &offMsrpm, &uMsrpmBit);
5250	if (RT_SUCCESS(rc))
5251	{
5252	Assert(uMsrpmBit == 0 \|\| uMsrpmBit == 2 \|\| uMsrpmBit == 4 \|\| uMsrpmBit == 6);
5253	Assert(offMsrpm < SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
5254
5255	uint8_t const pbMsrBitmap = (uint8_t const )pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pvMsrBitmap);
5256	pbMsrBitmap += offMsrpm;
5257	bool const fInterceptRead = RT_BOOL(*pbMsrBitmap & RT_BIT(uMsrpmBit));
5258	bool const fInterceptWrite = RT_BOOL(*pbMsrBitmap & RT_BIT(uMsrpmBit + 1));
5259
5260	if ( (fInterceptWrite && pVmcbNstGstCtrl->u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
5261	\|\| (fInterceptRead && pVmcbNstGstCtrl->u64ExitInfo1 == SVM_EXIT1_MSR_READ))
5262	{
5263	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5264	}
5265	}
5266	else
5267	{
5268	/*
5269	* MSRs not covered by the MSRPM automatically cause an #VMEXIT.
5270	* See AMD-V spec. "15.11 MSR Intercepts".
5271	*/
5272	Assert(rc == VERR_OUT_OF_RANGE);
5273	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5274	}
5275	}
5276	return hmR0SvmExitMsr(pVCpu, pSvmTransient);
5277	}
5278
5279	case SVM_EXIT_IOIO:
5280	{
5281	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_IOIO_PROT))
5282	{
5283	void *pvIoBitmap = pVCpu->cpum.GstCtx.hwvirt.svm.CTX_SUFF(pvIoBitmap);
5284	SVMIOIOEXITINFO IoExitInfo;
5285	IoExitInfo.u = pVmcbNstGst->ctrl.u64ExitInfo1;
5286	bool const fIntercept = hmR0SvmIsIoInterceptActive(pvIoBitmap, &IoExitInfo);
5287	if (fIntercept)
5288	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5289	}
5290	return hmR0SvmExitIOInstr(pVCpu, pSvmTransient);
5291	}
5292
5293	case SVM_EXIT_XCPT_PF:
5294	{
5295	PVM pVM = pVCpu->CTX_SUFF(pVM);
5296	if (pVM->hm.s.fNestedPaging)
5297	{
5298	uint32_t const u32ErrCode = pVmcbNstGstCtrl->u64ExitInfo1;
5299	uint64_t const uFaultAddress = pVmcbNstGstCtrl->u64ExitInfo2;
5300
5301	/* If the nested-guest is intercepting #PFs, cause a #PF #VMEXIT. */
5302	if (HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_PF))
5303	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, u32ErrCode, uFaultAddress);
5304
5305	/* If the nested-guest is not intercepting #PFs, forward the #PF to the guest. */
5306	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CR2);
5307	hmR0SvmSetPendingXcptPF(pVCpu, u32ErrCode, uFaultAddress);
5308	return VINF_SUCCESS;
5309	}
5310	return hmR0SvmExitXcptPF(pVCpu, pSvmTransient);
5311	}
5312
5313	case SVM_EXIT_XCPT_UD:
5314	{
5315	if (HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_UD))
5316	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5317	hmR0SvmSetPendingXcptUD(pVCpu);
5318	return VINF_SUCCESS;
5319	}
5320
5321	case SVM_EXIT_XCPT_MF:
5322	{
5323	if (HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_MF))
5324	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5325	return hmR0SvmExitXcptMF(pVCpu, pSvmTransient);
5326	}
5327
5328	case SVM_EXIT_XCPT_DB:
5329	{
5330	if (HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_DB))
5331	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5332	return hmR0SvmNestedExitXcptDB(pVCpu, pSvmTransient);
5333	}
5334
5335	case SVM_EXIT_XCPT_AC:
5336	{
5337	if (HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_AC))
5338	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5339	return hmR0SvmExitXcptAC(pVCpu, pSvmTransient);
5340	}
5341
5342	case SVM_EXIT_XCPT_BP:
5343	{
5344	if (HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_BP))
5345	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5346	return hmR0SvmNestedExitXcptBP(pVCpu, pSvmTransient);
5347	}
5348
5349	case SVM_EXIT_READ_CR0:
5350	case SVM_EXIT_READ_CR3:
5351	case SVM_EXIT_READ_CR4:
5352	{
5353	uint8_t const uCr = uExitCode - SVM_EXIT_READ_CR0;
5354	if (HMIsGuestSvmReadCRxInterceptSet(pVCpu, uCr))
5355	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5356	return hmR0SvmExitReadCRx(pVCpu, pSvmTransient);
5357	}
5358
5359	case SVM_EXIT_CR0_SEL_WRITE:
5360	{
5361	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_CR0_SEL_WRITE))
5362	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5363	return hmR0SvmExitWriteCRx(pVCpu, pSvmTransient);
5364	}
5365
5366	case SVM_EXIT_WRITE_CR0:
5367	case SVM_EXIT_WRITE_CR3:
5368	case SVM_EXIT_WRITE_CR4:
5369	case SVM_EXIT_WRITE_CR8: /* CR8 writes would go to the V_TPR rather than here, since we run with V_INTR_MASKING. */
5370	{
5371	uint8_t const uCr = uExitCode - SVM_EXIT_WRITE_CR0;
5372	Log4Func(("Write CR%u: uExitInfo1=%#RX64 uExitInfo2=%#RX64\n", uCr, uExitInfo1, uExitInfo2));
5373
5374	if (HMIsGuestSvmWriteCRxInterceptSet(pVCpu, uCr))
5375	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5376	return hmR0SvmExitWriteCRx(pVCpu, pSvmTransient);
5377	}
5378
5379	case SVM_EXIT_PAUSE:
5380	{
5381	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_PAUSE))
5382	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5383	return hmR0SvmExitPause(pVCpu, pSvmTransient);
5384	}
5385
5386	case SVM_EXIT_VINTR:
5387	{
5388	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_VINTR))
5389	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5390	return hmR0SvmExitUnexpected(pVCpu, pSvmTransient);
5391	}
5392
5393	case SVM_EXIT_INTR:
5394	case SVM_EXIT_NMI:
5395	case SVM_EXIT_SMI:
5396	case SVM_EXIT_XCPT_NMI: /* Should not occur, SVM_EXIT_NMI is used instead. */
5397	{
5398	/*
5399	* We shouldn't direct physical interrupts, NMIs, SMIs to the nested-guest.
5400	*
5401	* Although we don't intercept SMIs, the nested-guest might. Therefore, we might
5402	* get an SMI #VMEXIT here so simply ignore rather than causing a corresponding
5403	* nested-guest #VMEXIT.
5404	*/
5405	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_SVM_VMEXIT_MASK);
5406	return hmR0SvmExitIntr(pVCpu, pSvmTransient);
5407	}
5408
5409	case SVM_EXIT_FERR_FREEZE:
5410	{
5411	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_FERR_FREEZE))
5412	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5413	return hmR0SvmExitFerrFreeze(pVCpu, pSvmTransient);
5414	}
5415
5416	case SVM_EXIT_INVLPG:
5417	{
5418	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_INVLPG))
5419	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5420	return hmR0SvmExitInvlpg(pVCpu, pSvmTransient);
5421	}
5422
5423	case SVM_EXIT_WBINVD:
5424	{
5425	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_WBINVD))
5426	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5427	return hmR0SvmExitWbinvd(pVCpu, pSvmTransient);
5428	}
5429
5430	case SVM_EXIT_INVD:
5431	{
5432	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_INVD))
5433	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5434	return hmR0SvmExitInvd(pVCpu, pSvmTransient);
5435	}
5436
5437	case SVM_EXIT_RDPMC:
5438	{
5439	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_RDPMC))
5440	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5441	return hmR0SvmExitRdpmc(pVCpu, pSvmTransient);
5442	}
5443
5444	default:
5445	{
5446	switch (uExitCode)
5447	{
5448	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
5449	case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
5450	case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
5451	case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
5452	{
5453	uint8_t const uDr = uExitCode - SVM_EXIT_READ_DR0;
5454	if (HMIsGuestSvmReadDRxInterceptSet(pVCpu, uDr))
5455	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5456	return hmR0SvmExitReadDRx(pVCpu, pSvmTransient);
5457	}
5458
5459	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
5460	case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
5461	case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
5462	case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
5463	{
5464	uint8_t const uDr = uExitCode - SVM_EXIT_WRITE_DR0;
5465	if (HMIsGuestSvmWriteDRxInterceptSet(pVCpu, uDr))
5466	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5467	return hmR0SvmExitWriteDRx(pVCpu, pSvmTransient);
5468	}
5469
5470	case SVM_EXIT_XCPT_DE:
5471	/* SVM_EXIT_XCPT_DB: / / Handled above. */
5472	/* SVM_EXIT_XCPT_NMI: / / Handled above. */
5473	/* SVM_EXIT_XCPT_BP: / / Handled above. */
5474	case SVM_EXIT_XCPT_OF:
5475	case SVM_EXIT_XCPT_BR:
5476	/* SVM_EXIT_XCPT_UD: / / Handled above. */
5477	case SVM_EXIT_XCPT_NM:
5478	case SVM_EXIT_XCPT_DF:
5479	case SVM_EXIT_XCPT_CO_SEG_OVERRUN:
5480	case SVM_EXIT_XCPT_TS:
5481	case SVM_EXIT_XCPT_NP:
5482	case SVM_EXIT_XCPT_SS:
5483	case SVM_EXIT_XCPT_GP:
5484	/* SVM_EXIT_XCPT_PF: / / Handled above. */
5485	case SVM_EXIT_XCPT_15: /* Reserved. */
5486	/* SVM_EXIT_XCPT_MF: / / Handled above. */
5487	/* SVM_EXIT_XCPT_AC: / / Handled above. */
5488	case SVM_EXIT_XCPT_MC:
5489	case SVM_EXIT_XCPT_XF:
5490	case SVM_EXIT_XCPT_20: case SVM_EXIT_XCPT_21: case SVM_EXIT_XCPT_22: case SVM_EXIT_XCPT_23:
5491	case SVM_EXIT_XCPT_24: case SVM_EXIT_XCPT_25: case SVM_EXIT_XCPT_26: case SVM_EXIT_XCPT_27:
5492	case SVM_EXIT_XCPT_28: case SVM_EXIT_XCPT_29: case SVM_EXIT_XCPT_30: case SVM_EXIT_XCPT_31:
5493	{
5494	uint8_t const uVector = uExitCode - SVM_EXIT_XCPT_0;
5495	if (HMIsGuestSvmXcptInterceptSet(pVCpu, uVector))
5496	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5497	return hmR0SvmExitXcptGeneric(pVCpu, pSvmTransient);
5498	}
5499
5500	case SVM_EXIT_XSETBV:
5501	{
5502	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_XSETBV))
5503	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5504	return hmR0SvmExitXsetbv(pVCpu, pSvmTransient);
5505	}
5506
5507	case SVM_EXIT_TASK_SWITCH:
5508	{
5509	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_TASK_SWITCH))
5510	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5511	return hmR0SvmExitTaskSwitch(pVCpu, pSvmTransient);
5512	}
5513
5514	case SVM_EXIT_IRET:
5515	{
5516	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_IRET))
5517	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5518	return hmR0SvmExitIret(pVCpu, pSvmTransient);
5519	}
5520
5521	case SVM_EXIT_SHUTDOWN:
5522	{
5523	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_SHUTDOWN))
5524	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5525	return hmR0SvmExitShutdown(pVCpu, pSvmTransient);
5526	}
5527
5528	case SVM_EXIT_VMMCALL:
5529	{
5530	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_VMMCALL))
5531	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5532	return hmR0SvmExitVmmCall(pVCpu, pSvmTransient);
5533	}
5534
5535	case SVM_EXIT_CLGI:
5536	{
5537	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_CLGI))
5538	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5539	return hmR0SvmExitClgi(pVCpu, pSvmTransient);
5540	}
5541
5542	case SVM_EXIT_STGI:
5543	{
5544	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_STGI))
5545	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5546	return hmR0SvmExitStgi(pVCpu, pSvmTransient);
5547	}
5548
5549	case SVM_EXIT_VMLOAD:
5550	{
5551	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_VMLOAD))
5552	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5553	return hmR0SvmExitVmload(pVCpu, pSvmTransient);
5554	}
5555
5556	case SVM_EXIT_VMSAVE:
5557	{
5558	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_VMSAVE))
5559	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5560	return hmR0SvmExitVmsave(pVCpu, pSvmTransient);
5561	}
5562
5563	case SVM_EXIT_INVLPGA:
5564	{
5565	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_INVLPGA))
5566	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5567	return hmR0SvmExitInvlpga(pVCpu, pSvmTransient);
5568	}
5569
5570	case SVM_EXIT_VMRUN:
5571	{
5572	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_VMRUN))
5573	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5574	return hmR0SvmExitVmrun(pVCpu, pSvmTransient);
5575	}
5576
5577	case SVM_EXIT_RSM:
5578	{
5579	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_RSM))
5580	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5581	hmR0SvmSetPendingXcptUD(pVCpu);
5582	return VINF_SUCCESS;
5583	}
5584
5585	case SVM_EXIT_SKINIT:
5586	{
5587	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, SVM_CTRL_INTERCEPT_SKINIT))
5588	NST_GST_VMEXIT_CALL_RET(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5589	hmR0SvmSetPendingXcptUD(pVCpu);
5590	return VINF_SUCCESS;
5591	}
5592
5593	case SVM_EXIT_NPF:
5594	{
5595	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
5596	return hmR0SvmExitNestedPF(pVCpu, pSvmTransient);
5597	}
5598
5599	case SVM_EXIT_INIT: /* We shouldn't get INIT signals while executing a nested-guest. */
5600	return hmR0SvmExitUnexpected(pVCpu, pSvmTransient);
5601
5602	default:
5603	{
5604	AssertMsgFailed(("hmR0SvmHandleExitNested: Unknown exit code %#x\n", pSvmTransient->u64ExitCode));
5605	pVCpu->hm.s.u32HMError = pSvmTransient->u64ExitCode;
5606	return VERR_SVM_UNKNOWN_EXIT;
5607	}
5608	}
5609	}
5610	}
5611	/* not reached */
5612
5613	#undef NST_GST_VMEXIT_CALL_RET
5614	}
5615	#endif
5616
5617
5618	/**
5619	* Handles a guest \#VMEXIT (for all EXITCODE values except SVM_EXIT_INVALID).
5620	*
5621	* @returns VBox status code (informational status codes included).
5622	* @param pVCpu The cross context virtual CPU structure.
5623	* @param pSvmTransient Pointer to the SVM transient structure.
5624	*/
5625	static int hmR0SvmHandleExit(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
5626	{
5627	Assert(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID);
5628	Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
5629
5630	#ifdef DEBUG_ramshankar
5631	# define VMEXIT_CALL_RET(a_fDbg, a_CallExpr) \
5632	do { \
5633	if ((a_fDbg) == 1) \
5634	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL); \
5635	int rc = a_CallExpr; \
5636	if ((a_fDbg) == 1) \
5637	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST); \
5638	return rc; \
5639	} while (0)
5640	#else
5641	# define VMEXIT_CALL_RET(a_fDbg, a_CallExpr) return a_CallExpr
5642	#endif
5643
5644	/*
5645	* The ordering of the case labels is based on most-frequently-occurring #VMEXITs
5646	* for most guests under normal workloads (for some definition of "normal").
5647	*/
5648	uint64_t const uExitCode = pSvmTransient->u64ExitCode;
5649	switch (uExitCode)
5650	{
5651	case SVM_EXIT_NPF: VMEXIT_CALL_RET(0, hmR0SvmExitNestedPF(pVCpu, pSvmTransient));
5652	case SVM_EXIT_IOIO: VMEXIT_CALL_RET(0, hmR0SvmExitIOInstr(pVCpu, pSvmTransient));
5653	case SVM_EXIT_RDTSC: VMEXIT_CALL_RET(0, hmR0SvmExitRdtsc(pVCpu, pSvmTransient));
5654	case SVM_EXIT_RDTSCP: VMEXIT_CALL_RET(0, hmR0SvmExitRdtscp(pVCpu, pSvmTransient));
5655	case SVM_EXIT_CPUID: VMEXIT_CALL_RET(0, hmR0SvmExitCpuid(pVCpu, pSvmTransient));
5656	case SVM_EXIT_XCPT_PF: VMEXIT_CALL_RET(0, hmR0SvmExitXcptPF(pVCpu, pSvmTransient));
5657	case SVM_EXIT_MSR: VMEXIT_CALL_RET(0, hmR0SvmExitMsr(pVCpu, pSvmTransient));
5658	case SVM_EXIT_MONITOR: VMEXIT_CALL_RET(0, hmR0SvmExitMonitor(pVCpu, pSvmTransient));
5659	case SVM_EXIT_MWAIT: VMEXIT_CALL_RET(0, hmR0SvmExitMwait(pVCpu, pSvmTransient));
5660	case SVM_EXIT_HLT: VMEXIT_CALL_RET(0, hmR0SvmExitHlt(pVCpu, pSvmTransient));
5661
5662	case SVM_EXIT_XCPT_NMI: /* Should not occur, SVM_EXIT_NMI is used instead. */
5663	case SVM_EXIT_INTR:
5664	case SVM_EXIT_NMI: VMEXIT_CALL_RET(0, hmR0SvmExitIntr(pVCpu, pSvmTransient));
5665
5666	case SVM_EXIT_READ_CR0:
5667	case SVM_EXIT_READ_CR3:
5668	case SVM_EXIT_READ_CR4: VMEXIT_CALL_RET(0, hmR0SvmExitReadCRx(pVCpu, pSvmTransient));
5669
5670	case SVM_EXIT_CR0_SEL_WRITE:
5671	case SVM_EXIT_WRITE_CR0:
5672	case SVM_EXIT_WRITE_CR3:
5673	case SVM_EXIT_WRITE_CR4:
5674	case SVM_EXIT_WRITE_CR8: VMEXIT_CALL_RET(0, hmR0SvmExitWriteCRx(pVCpu, pSvmTransient));
5675
5676	case SVM_EXIT_VINTR: VMEXIT_CALL_RET(0, hmR0SvmExitVIntr(pVCpu, pSvmTransient));
5677	case SVM_EXIT_PAUSE: VMEXIT_CALL_RET(0, hmR0SvmExitPause(pVCpu, pSvmTransient));
5678	case SVM_EXIT_VMMCALL: VMEXIT_CALL_RET(0, hmR0SvmExitVmmCall(pVCpu, pSvmTransient));
5679	case SVM_EXIT_INVLPG: VMEXIT_CALL_RET(0, hmR0SvmExitInvlpg(pVCpu, pSvmTransient));
5680	case SVM_EXIT_WBINVD: VMEXIT_CALL_RET(0, hmR0SvmExitWbinvd(pVCpu, pSvmTransient));
5681	case SVM_EXIT_INVD: VMEXIT_CALL_RET(0, hmR0SvmExitInvd(pVCpu, pSvmTransient));
5682	case SVM_EXIT_RDPMC: VMEXIT_CALL_RET(0, hmR0SvmExitRdpmc(pVCpu, pSvmTransient));
5683	case SVM_EXIT_IRET: VMEXIT_CALL_RET(0, hmR0SvmExitIret(pVCpu, pSvmTransient));
5684	case SVM_EXIT_XCPT_UD: VMEXIT_CALL_RET(0, hmR0SvmExitXcptUD(pVCpu, pSvmTransient));
5685	case SVM_EXIT_XCPT_MF: VMEXIT_CALL_RET(0, hmR0SvmExitXcptMF(pVCpu, pSvmTransient));
5686	case SVM_EXIT_XCPT_DB: VMEXIT_CALL_RET(0, hmR0SvmExitXcptDB(pVCpu, pSvmTransient));
5687	case SVM_EXIT_XCPT_AC: VMEXIT_CALL_RET(0, hmR0SvmExitXcptAC(pVCpu, pSvmTransient));
5688	case SVM_EXIT_XCPT_BP: VMEXIT_CALL_RET(0, hmR0SvmExitXcptBP(pVCpu, pSvmTransient));
5689	case SVM_EXIT_XSETBV: VMEXIT_CALL_RET(0, hmR0SvmExitXsetbv(pVCpu, pSvmTransient));
5690	case SVM_EXIT_FERR_FREEZE: VMEXIT_CALL_RET(0, hmR0SvmExitFerrFreeze(pVCpu, pSvmTransient));
5691
5692	default:
5693	{
5694	switch (pSvmTransient->u64ExitCode)
5695	{
5696	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
5697	case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
5698	case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
5699	case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
5700	VMEXIT_CALL_RET(0, hmR0SvmExitReadDRx(pVCpu, pSvmTransient));
5701
5702	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
5703	case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
5704	case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
5705	case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
5706	VMEXIT_CALL_RET(0, hmR0SvmExitWriteDRx(pVCpu, pSvmTransient));
5707
5708	case SVM_EXIT_TASK_SWITCH: VMEXIT_CALL_RET(0, hmR0SvmExitTaskSwitch(pVCpu, pSvmTransient));
5709	case SVM_EXIT_SHUTDOWN: VMEXIT_CALL_RET(0, hmR0SvmExitShutdown(pVCpu, pSvmTransient));
5710
5711	case SVM_EXIT_SMI:
5712	case SVM_EXIT_INIT:
5713	{
5714	/*
5715	* We don't intercept SMIs. As for INIT signals, it really shouldn't ever happen here.
5716	* If it ever does, we want to know about it so log the exit code and bail.
5717	*/
5718	VMEXIT_CALL_RET(0, hmR0SvmExitUnexpected(pVCpu, pSvmTransient));
5719	}
5720
5721	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
5722	case SVM_EXIT_CLGI: VMEXIT_CALL_RET(0, hmR0SvmExitClgi(pVCpu, pSvmTransient));
5723	case SVM_EXIT_STGI: VMEXIT_CALL_RET(0, hmR0SvmExitStgi(pVCpu, pSvmTransient));
5724	case SVM_EXIT_VMLOAD: VMEXIT_CALL_RET(0, hmR0SvmExitVmload(pVCpu, pSvmTransient));
5725	case SVM_EXIT_VMSAVE: VMEXIT_CALL_RET(0, hmR0SvmExitVmsave(pVCpu, pSvmTransient));
5726	case SVM_EXIT_INVLPGA: VMEXIT_CALL_RET(0, hmR0SvmExitInvlpga(pVCpu, pSvmTransient));
5727	case SVM_EXIT_VMRUN: VMEXIT_CALL_RET(0, hmR0SvmExitVmrun(pVCpu, pSvmTransient));
5728	#else
5729	case SVM_EXIT_CLGI:
5730	case SVM_EXIT_STGI:
5731	case SVM_EXIT_VMLOAD:
5732	case SVM_EXIT_VMSAVE:
5733	case SVM_EXIT_INVLPGA:
5734	case SVM_EXIT_VMRUN:
5735	#endif
5736	case SVM_EXIT_RSM:
5737	case SVM_EXIT_SKINIT:
5738	{
5739	hmR0SvmSetPendingXcptUD(pVCpu);
5740	return VINF_SUCCESS;
5741	}
5742
5743	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
5744	case SVM_EXIT_XCPT_DE:
5745	/* SVM_EXIT_XCPT_DB: / / Handled above. */
5746	/* SVM_EXIT_XCPT_NMI: / / Handled above. */
5747	/* SVM_EXIT_XCPT_BP: / / Handled above. */
5748	case SVM_EXIT_XCPT_OF:
5749	case SVM_EXIT_XCPT_BR:
5750	/* SVM_EXIT_XCPT_UD: / / Handled above. */
5751	case SVM_EXIT_XCPT_NM:
5752	case SVM_EXIT_XCPT_DF:
5753	case SVM_EXIT_XCPT_CO_SEG_OVERRUN:
5754	case SVM_EXIT_XCPT_TS:
5755	case SVM_EXIT_XCPT_NP:
5756	case SVM_EXIT_XCPT_SS:
5757	case SVM_EXIT_XCPT_GP:
5758	/* SVM_EXIT_XCPT_PF: */
5759	case SVM_EXIT_XCPT_15: /* Reserved. */
5760	/* SVM_EXIT_XCPT_MF: / / Handled above. */
5761	/* SVM_EXIT_XCPT_AC: / / Handled above. */
5762	case SVM_EXIT_XCPT_MC:
5763	case SVM_EXIT_XCPT_XF:
5764	case SVM_EXIT_XCPT_20: case SVM_EXIT_XCPT_21: case SVM_EXIT_XCPT_22: case SVM_EXIT_XCPT_23:
5765	case SVM_EXIT_XCPT_24: case SVM_EXIT_XCPT_25: case SVM_EXIT_XCPT_26: case SVM_EXIT_XCPT_27:
5766	case SVM_EXIT_XCPT_28: case SVM_EXIT_XCPT_29: case SVM_EXIT_XCPT_30: case SVM_EXIT_XCPT_31:
5767	VMEXIT_CALL_RET(0, hmR0SvmExitXcptGeneric(pVCpu, pSvmTransient));
5768	#endif /* HMSVM_ALWAYS_TRAP_ALL_XCPTS */
5769
5770	default:
5771	{
5772	AssertMsgFailed(("hmR0SvmHandleExit: Unknown exit code %#RX64\n", uExitCode));
5773	pVCpu->hm.s.u32HMError = uExitCode;
5774	return VERR_SVM_UNKNOWN_EXIT;
5775	}
5776	}
5777	}
5778	}
5779	/* not reached */
5780	#undef VMEXIT_CALL_RET
5781	}
5782
5783
5784	#ifdef VBOX_STRICT
5785	/* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
5786	# define HMSVM_ASSERT_PREEMPT_CPUID_VAR() \
5787	RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
5788
5789	# define HMSVM_ASSERT_PREEMPT_CPUID() \
5790	do \
5791	{ \
5792	RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
5793	AssertMsg(idAssertCpu == idAssertCpuNow, ("SVM %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
5794	} while (0)
5795
5796	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(a_pVCpu, a_pSvmTransient) \
5797	do { \
5798	AssertPtr((a_pVCpu)); \
5799	AssertPtr((a_pSvmTransient)); \
5800	Assert(ASMIntAreEnabled()); \
5801	HMSVM_ASSERT_PREEMPT_SAFE((a_pVCpu)); \
5802	HMSVM_ASSERT_PREEMPT_CPUID_VAR(); \
5803	Log4Func(("vcpu[%u] -v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-\n", (a_pVCpu)->idCpu)); \
5804	HMSVM_ASSERT_PREEMPT_SAFE((a_pVCpu)); \
5805	if (VMMR0IsLogFlushDisabled((a_pVCpu))) \
5806	HMSVM_ASSERT_PREEMPT_CPUID(); \
5807	} while (0)
5808	#else
5809	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(a_pVCpu, a_pSvmTransient) \
5810	do { \
5811	RT_NOREF2(a_pVCpu, a_pSvmTransient); \
5812	} while (0)
5813	#endif
5814
5815
5816	/**
5817	* Gets the IEM exception flags for the specified SVM event.
5818	*
5819	* @returns The IEM exception flags.
5820	* @param pEvent Pointer to the SVM event.
5821	*
5822	* @remarks This function currently only constructs flags required for
5823	* IEMEvaluateRecursiveXcpt and not the complete flags (e.g. error-code
5824	* and CR2 aspects of an exception are not included).
5825	*/
5826	static uint32_t hmR0SvmGetIemXcptFlags(PCSVMEVENT pEvent)
5827	{
5828	uint8_t const uEventType = pEvent->n.u3Type;
5829	uint32_t fIemXcptFlags;
5830	switch (uEventType)
5831	{
5832	case SVM_EVENT_EXCEPTION:
5833	/*
5834	* Only INT3 and INTO instructions can raise #BP and #OF exceptions.
5835	* See AMD spec. Table 8-1. "Interrupt Vector Source and Cause".
5836	*/
5837	if (pEvent->n.u8Vector == X86_XCPT_BP)
5838	{
5839	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT \| IEM_XCPT_FLAGS_BP_INSTR;
5840	break;
5841	}
5842	if (pEvent->n.u8Vector == X86_XCPT_OF)
5843	{
5844	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT \| IEM_XCPT_FLAGS_OF_INSTR;
5845	break;
5846	}
5847	/** @todo How do we distinguish ICEBP \#DB from the regular one? */
5848	RT_FALL_THRU();
5849	case SVM_EVENT_NMI:
5850	fIemXcptFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
5851	break;
5852
5853	case SVM_EVENT_EXTERNAL_IRQ:
5854	fIemXcptFlags = IEM_XCPT_FLAGS_T_EXT_INT;
5855	break;
5856
5857	case SVM_EVENT_SOFTWARE_INT:
5858	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT;
5859	break;
5860
5861	default:
5862	fIemXcptFlags = 0;
5863	AssertMsgFailed(("Unexpected event type! uEventType=%#x uVector=%#x", uEventType, pEvent->n.u8Vector));
5864	break;
5865	}
5866	return fIemXcptFlags;
5867	}
5868
5869
5870	/**
5871	* Handle a condition that occurred while delivering an event through the guest
5872	* IDT.
5873	*
5874	* @returns VBox status code (informational error codes included).
5875	* @retval VINF_SUCCESS if we should continue handling the \#VMEXIT.
5876	* @retval VINF_HM_DOUBLE_FAULT if a \#DF condition was detected and we ought to
5877	* continue execution of the guest which will delivery the \#DF.
5878	* @retval VINF_EM_RESET if we detected a triple-fault condition.
5879	* @retval VERR_EM_GUEST_CPU_HANG if we detected a guest CPU hang.
5880	*
5881	* @param pVCpu The cross context virtual CPU structure.
5882	* @param pSvmTransient Pointer to the SVM transient structure.
5883	*
5884	* @remarks No-long-jump zone!!!
5885	*/
5886	static int hmR0SvmCheckExitDueToEventDelivery(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
5887	{
5888	int rc = VINF_SUCCESS;
5889	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
5890	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CR2);
5891
5892	Log4(("EXITINTINFO: Pending vectoring event %#RX64 Valid=%RTbool ErrValid=%RTbool Err=%#RX32 Type=%u Vector=%u\n",
5893	pVmcb->ctrl.ExitIntInfo.u, !!pVmcb->ctrl.ExitIntInfo.n.u1Valid, !!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid,
5894	pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, pVmcb->ctrl.ExitIntInfo.n.u3Type, pVmcb->ctrl.ExitIntInfo.n.u8Vector));
5895
5896	/*
5897	* The EXITINTINFO (if valid) contains the prior exception (IDT vector) that was trying to
5898	* be delivered to the guest which caused a #VMEXIT which was intercepted (Exit vector).
5899	*
5900	* See AMD spec. 15.7.3 "EXITINFO Pseudo-Code".
5901	*/
5902	if (pVmcb->ctrl.ExitIntInfo.n.u1Valid)
5903	{
5904	IEMXCPTRAISE enmRaise;
5905	IEMXCPTRAISEINFO fRaiseInfo;
5906	bool const fExitIsHwXcpt = pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0 <= SVM_EXIT_XCPT_31;
5907	uint8_t const uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
5908	if (fExitIsHwXcpt)
5909	{
5910	uint8_t const uExitVector = pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0;
5911	uint32_t const fIdtVectorFlags = hmR0SvmGetIemXcptFlags(&pVmcb->ctrl.ExitIntInfo);
5912	uint32_t const fExitVectorFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
5913	enmRaise = IEMEvaluateRecursiveXcpt(pVCpu, fIdtVectorFlags, uIdtVector, fExitVectorFlags, uExitVector, &fRaiseInfo);
5914	}
5915	else
5916	{
5917	/*
5918	* If delivery of an event caused a #VMEXIT that is not an exception (e.g. #NPF)
5919	* then we end up here.
5920	*
5921	* If the event was:
5922	* - a software interrupt, we can re-execute the instruction which will
5923	* regenerate the event.
5924	* - an NMI, we need to clear NMI blocking and re-inject the NMI.
5925	* - a hardware exception or external interrupt, we re-inject it.
5926	*/
5927	fRaiseInfo = IEMXCPTRAISEINFO_NONE;
5928	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_SOFTWARE_INT)
5929	enmRaise = IEMXCPTRAISE_REEXEC_INSTR;
5930	else
5931	enmRaise = IEMXCPTRAISE_PREV_EVENT;
5932	}
5933
5934	switch (enmRaise)
5935	{
5936	case IEMXCPTRAISE_CURRENT_XCPT:
5937	case IEMXCPTRAISE_PREV_EVENT:
5938	{
5939	/* For software interrupts, we shall re-execute the instruction. */
5940	if (!(fRaiseInfo & IEMXCPTRAISEINFO_SOFT_INT_XCPT))
5941	{
5942	RTGCUINTPTR GCPtrFaultAddress = 0;
5943
5944	/* If we are re-injecting an NMI, clear NMI blocking. */
5945	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
5946	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
5947
5948	/* Determine a vectoring #PF condition, see comment in hmR0SvmExitXcptPF(). */
5949	if (fRaiseInfo & (IEMXCPTRAISEINFO_EXT_INT_PF \| IEMXCPTRAISEINFO_NMI_PF))
5950	{
5951	pSvmTransient->fVectoringPF = true;
5952	Log4Func(("IDT: Pending vectoring #PF due to delivery of Ext-Int/NMI. uCR2=%#RX64\n",
5953	pVCpu->cpum.GstCtx.cr2));
5954	}
5955	else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION
5956	&& uIdtVector == X86_XCPT_PF)
5957	{
5958	/*
5959	* If the previous exception was a #PF, we need to recover the CR2 value.
5960	* This can't happen with shadow paging.
5961	*/
5962	GCPtrFaultAddress = pVCpu->cpum.GstCtx.cr2;
5963	}
5964
5965	/*
5966	* Without nested paging, when uExitVector is #PF, CR2 value will be updated from the VMCB's
5967	* exit info. fields, if it's a guest #PF, see hmR0SvmExitXcptPF().
5968	*/
5969	Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
5970	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
5971	hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, GCPtrFaultAddress);
5972
5973	Log4Func(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32 GCPtrFaultAddress=%#RX64\n",
5974	pVmcb->ctrl.ExitIntInfo.u, RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid),
5975	pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, GCPtrFaultAddress));
5976	}
5977	break;
5978	}
5979
5980	case IEMXCPTRAISE_REEXEC_INSTR:
5981	{
5982	Assert(rc == VINF_SUCCESS);
5983	break;
5984	}
5985
5986	case IEMXCPTRAISE_DOUBLE_FAULT:
5987	{
5988	/*
5989	* Determing a vectoring double #PF condition. Used later, when PGM evaluates
5990	* the second #PF as a guest #PF (and not a shadow #PF) and needs to be
5991	* converted into a #DF.
5992	*/
5993	if (fRaiseInfo & IEMXCPTRAISEINFO_PF_PF)
5994	{
5995	Log4Func(("IDT: Pending vectoring double #PF uCR2=%#RX64\n", pVCpu->cpum.GstCtx.cr2));
5996	pSvmTransient->fVectoringDoublePF = true;
5997	Assert(rc == VINF_SUCCESS);
5998	}
5999	else
6000	{
6001	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
6002	hmR0SvmSetPendingXcptDF(pVCpu);
6003	rc = VINF_HM_DOUBLE_FAULT;
6004	}
6005	break;
6006	}
6007
6008	case IEMXCPTRAISE_TRIPLE_FAULT:
6009	{
6010	rc = VINF_EM_RESET;
6011	break;
6012	}
6013
6014	case IEMXCPTRAISE_CPU_HANG:
6015	{
6016	rc = VERR_EM_GUEST_CPU_HANG;
6017	break;
6018	}
6019
6020	default:
6021	AssertMsgFailedBreakStmt(("Bogus enmRaise value: %d (%#x)\n", enmRaise, enmRaise), rc = VERR_SVM_IPE_2);
6022	}
6023	}
6024	Assert(rc == VINF_SUCCESS \|\| rc == VINF_HM_DOUBLE_FAULT \|\| rc == VINF_EM_RESET \|\| rc == VERR_EM_GUEST_CPU_HANG);
6025	return rc;
6026	}
6027
6028
6029	/**
6030	* Advances the guest RIP making use of the CPU's NRIP_SAVE feature if
6031	* supported, otherwise advances the RIP by the number of bytes specified in
6032	* @a cb.
6033	*
6034	* @param pVCpu The cross context virtual CPU structure.
6035	* @param cb RIP increment value in bytes.
6036	*
6037	* @remarks Use this function only from \#VMEXIT's where the NRIP value is valid
6038	* when NRIP_SAVE is supported by the CPU, otherwise use
6039	* hmR0SvmAdvanceRipDumb!
6040	*/
6041	DECLINLINE(void) hmR0SvmAdvanceRipHwAssist(PVMCPU pVCpu, uint32_t cb)
6042	{
6043	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6044	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6045	if (fSupportsNextRipSave)
6046	{
6047	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6048	Assert(pVmcb);
6049	Assert(pVmcb->ctrl.u64NextRIP);
6050	Assert(!(pCtx->fExtrn & CPUMCTX_EXTRN_RIP));
6051	AssertRelease(pVmcb->ctrl.u64NextRIP - pCtx->rip == cb); /* temporary, remove later */
6052	pCtx->rip = pVmcb->ctrl.u64NextRIP;
6053	}
6054	else
6055	pCtx->rip += cb;
6056
6057	HMSVM_UPDATE_INTR_SHADOW(pVCpu);
6058	}
6059
6060
6061	/**
6062	* Gets the length of the current instruction if the CPU supports the NRIP_SAVE
6063	* feature. Otherwise, returns the value in @a cbLikely.
6064	*
6065	* @param pVCpu The cross context virtual CPU structure.
6066	* @param cbLikely The likely instruction length.
6067	*/
6068	DECLINLINE(uint8_t) hmR0SvmGetInstrLengthHwAssist(PVMCPU pVCpu, uint8_t cbLikely)
6069	{
6070	Assert(cbLikely <= 15); /* See Intel spec. 2.3.11 "AVX Instruction Length" */
6071	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6072	if (fSupportsNextRipSave)
6073	{
6074	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6075	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pVCpu->cpum.GstCtx.rip;
6076	Assert(cbInstr == cbLikely);
6077	return cbInstr;
6078	}
6079	return cbLikely;
6080	}
6081
6082
6083	/**
6084	* Advances the guest RIP by the number of bytes specified in @a cb. This does
6085	* not make use of any hardware features to determine the instruction length.
6086	*
6087	* @param pVCpu The cross context virtual CPU structure.
6088	* @param cb RIP increment value in bytes.
6089	*/
6090	DECLINLINE(void) hmR0SvmAdvanceRipDumb(PVMCPU pVCpu, uint32_t cb)
6091	{
6092	pVCpu->cpum.GstCtx.rip += cb;
6093	HMSVM_UPDATE_INTR_SHADOW(pVCpu);
6094	}
6095	#undef HMSVM_UPDATE_INTR_SHADOW
6096
6097
6098	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
6099	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #VMEXIT handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
6100	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
6101
6102	/** @name \#VMEXIT handlers.
6103	* @{
6104	*/
6105
6106	/**
6107	* \#VMEXIT handler for external interrupts, NMIs, FPU assertion freeze and INIT
6108	* signals (SVM_EXIT_INTR, SVM_EXIT_NMI, SVM_EXIT_FERR_FREEZE, SVM_EXIT_INIT).
6109	*/
6110	HMSVM_EXIT_DECL hmR0SvmExitIntr(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6111	{
6112	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6113
6114	if (pSvmTransient->u64ExitCode == SVM_EXIT_NMI)
6115	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
6116	else if (pSvmTransient->u64ExitCode == SVM_EXIT_INTR)
6117	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
6118
6119	/*
6120	* AMD-V has no preemption timer and the generic periodic preemption timer has no way to
6121	* signal -before- the timer fires if the current interrupt is our own timer or a some
6122	* other host interrupt. We also cannot examine what interrupt it is until the host
6123	* actually take the interrupt.
6124	*
6125	* Going back to executing guest code here unconditionally causes random scheduling
6126	* problems (observed on an AMD Phenom 9850 Quad-Core on Windows 64-bit host).
6127	*/
6128	return VINF_EM_RAW_INTERRUPT;
6129	}
6130
6131
6132	/**
6133	* \#VMEXIT handler for WBINVD (SVM_EXIT_WBINVD). Conditional \#VMEXIT.
6134	*/
6135	HMSVM_EXIT_DECL hmR0SvmExitWbinvd(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6136	{
6137	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6138
6139	hmR0SvmAdvanceRipHwAssist(pVCpu, 2);
6140	int rc = VINF_SUCCESS;
6141	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6142	return rc;
6143	}
6144
6145
6146	/**
6147	* \#VMEXIT handler for INVD (SVM_EXIT_INVD). Unconditional \#VMEXIT.
6148	*/
6149	HMSVM_EXIT_DECL hmR0SvmExitInvd(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6150	{
6151	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6152
6153	hmR0SvmAdvanceRipHwAssist(pVCpu, 2);
6154	int rc = VINF_SUCCESS;
6155	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6156	return rc;
6157	}
6158
6159
6160	/**
6161	* \#VMEXIT handler for INVD (SVM_EXIT_CPUID). Conditional \#VMEXIT.
6162	*/
6163	HMSVM_EXIT_DECL hmR0SvmExitCpuid(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6164	{
6165	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6166
6167	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK \| CPUMCTX_EXTRN_RAX \| CPUMCTX_EXTRN_RCX);
6168	VBOXSTRICTRC rcStrict;
6169	PCEMEXITREC pExitRec = EMHistoryUpdateFlagsAndTypeAndPC(pVCpu,
6170	EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_CPUID),
6171	pVCpu->cpum.GstCtx.rip + pVCpu->cpum.GstCtx.cs.u64Base);
6172	if (!pExitRec)
6173	{
6174	rcStrict = IEMExecDecodedCpuid(pVCpu, hmR0SvmGetInstrLengthHwAssist(pVCpu, 2));
6175	if (rcStrict == VINF_IEM_RAISED_XCPT)
6176	rcStrict = VINF_SUCCESS;
6177	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6178	}
6179	else
6180	{
6181	/*
6182	* Frequent exit or something needing probing. Get state and call EMHistoryExec.
6183	*/
6184	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6185
6186	Log4(("CpuIdExit/%u: %04x:%08RX64: %#x/%#x -> EMHistoryExec\n",
6187	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.eax, pVCpu->cpum.GstCtx.ecx));
6188
6189	rcStrict = EMHistoryExec(pVCpu, pExitRec, 0);
6190
6191	Log4(("CpuIdExit/%u: %04x:%08RX64: EMHistoryExec -> %Rrc + %04x:%08RX64\n",
6192	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
6193	VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
6194	}
6195	return VBOXSTRICTRC_TODO(rcStrict);
6196	}
6197
6198
6199	/**
6200	* \#VMEXIT handler for RDTSC (SVM_EXIT_RDTSC). Conditional \#VMEXIT.
6201	*/
6202	HMSVM_EXIT_DECL hmR0SvmExitRdtsc(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6203	{
6204	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6205	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6206	VBOXSTRICTRC rcStrict = IEMExecDecodedRdtsc(pVCpu, hmR0SvmGetInstrLengthHwAssist(pVCpu, 2));
6207	if (rcStrict == VINF_SUCCESS)
6208	pSvmTransient->fUpdateTscOffsetting = true;
6209	else if (rcStrict == VINF_IEM_RAISED_XCPT)
6210	rcStrict = VINF_SUCCESS;
6211	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6212	return VBOXSTRICTRC_TODO(rcStrict);
6213	}
6214
6215
6216	/**
6217	* \#VMEXIT handler for RDTSCP (SVM_EXIT_RDTSCP). Conditional \#VMEXIT.
6218	*/
6219	HMSVM_EXIT_DECL hmR0SvmExitRdtscp(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6220	{
6221	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6222	VBOXSTRICTRC rcStrict = IEMExecDecodedRdtscp(pVCpu, hmR0SvmGetInstrLengthHwAssist(pVCpu, 3));
6223	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6224	if (rcStrict == VINF_SUCCESS)
6225	pSvmTransient->fUpdateTscOffsetting = true;
6226	else if (rcStrict == VINF_IEM_RAISED_XCPT)
6227	rcStrict = VINF_SUCCESS;
6228	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6229	return VBOXSTRICTRC_TODO(rcStrict);
6230	}
6231
6232
6233	/**
6234	* \#VMEXIT handler for RDPMC (SVM_EXIT_RDPMC). Conditional \#VMEXIT.
6235	*/
6236	HMSVM_EXIT_DECL hmR0SvmExitRdpmc(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6237	{
6238	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6239	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR4 \| CPUMCTX_EXTRN_SS);
6240
6241	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6242	int rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
6243	if (RT_LIKELY(rc == VINF_SUCCESS))
6244	{
6245	hmR0SvmAdvanceRipHwAssist(pVCpu, 2);
6246	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6247	}
6248	else
6249	{
6250	AssertMsgFailed(("hmR0SvmExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
6251	rc = VERR_EM_INTERPRETER;
6252	}
6253	return rc;
6254	}
6255
6256
6257	/**
6258	* \#VMEXIT handler for INVLPG (SVM_EXIT_INVLPG). Conditional \#VMEXIT.
6259	*/
6260	HMSVM_EXIT_DECL hmR0SvmExitInvlpg(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6261	{
6262	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6263	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
6264
6265	VBOXSTRICTRC rcStrict;
6266	bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu);
6267	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6268	if ( fSupportsDecodeAssists
6269	&& fSupportsNextRipSave)
6270	{
6271	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6272	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6273	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pVCpu->cpum.GstCtx.rip;
6274	RTGCPTR const GCPtrPage = pVmcb->ctrl.u64ExitInfo1;
6275	rcStrict = IEMExecDecodedInvlpg(pVCpu, cbInstr, GCPtrPage);
6276	}
6277	else
6278	{
6279	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6280	rcStrict = IEMExecOne(pVCpu);
6281	}
6282
6283	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict); /* RIP updated by IEMExecDecodedInvlpg() or IEMExecOne(). */
6284	return VBOXSTRICTRC_VAL(rcStrict);
6285	}
6286
6287
6288	/**
6289	* \#VMEXIT handler for HLT (SVM_EXIT_HLT). Conditional \#VMEXIT.
6290	*/
6291	HMSVM_EXIT_DECL hmR0SvmExitHlt(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6292	{
6293	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6294
6295	hmR0SvmAdvanceRipHwAssist(pVCpu, 1);
6296	int rc = EMShouldContinueAfterHalt(pVCpu, &pVCpu->cpum.GstCtx) ? VINF_SUCCESS : VINF_EM_HALT;
6297	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6298
6299	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitHlt);
6300	if (rc != VINF_SUCCESS)
6301	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHltToR3);
6302	return rc;
6303	}
6304
6305
6306	/**
6307	* \#VMEXIT handler for MONITOR (SVM_EXIT_MONITOR). Conditional \#VMEXIT.
6308	*/
6309	HMSVM_EXIT_DECL hmR0SvmExitMonitor(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6310	{
6311	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6312	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_SS);
6313
6314	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6315	int rc = EMInterpretMonitor(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
6316	if (RT_LIKELY(rc == VINF_SUCCESS))
6317	{
6318	hmR0SvmAdvanceRipHwAssist(pVCpu, 3);
6319	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6320	}
6321	else
6322	{
6323	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMonitor: EMInterpretMonitor failed with %Rrc\n", rc));
6324	rc = VERR_EM_INTERPRETER;
6325	}
6326	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMonitor);
6327	return rc;
6328	}
6329
6330
6331	/**
6332	* \#VMEXIT handler for MWAIT (SVM_EXIT_MWAIT). Conditional \#VMEXIT.
6333	*/
6334	HMSVM_EXIT_DECL hmR0SvmExitMwait(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6335	{
6336	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6337	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_SS);
6338
6339	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6340	VBOXSTRICTRC rc2 = EMInterpretMWait(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
6341	int rc = VBOXSTRICTRC_VAL(rc2);
6342	if ( rc == VINF_EM_HALT
6343	\|\| rc == VINF_SUCCESS)
6344	{
6345	hmR0SvmAdvanceRipHwAssist(pVCpu, 3);
6346
6347	if ( rc == VINF_EM_HALT
6348	&& EMMonitorWaitShouldContinue(pVCpu, pCtx))
6349	{
6350	rc = VINF_SUCCESS;
6351	}
6352	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6353	}
6354	else
6355	{
6356	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMwait: EMInterpretMWait failed with %Rrc\n", rc));
6357	rc = VERR_EM_INTERPRETER;
6358	}
6359	AssertMsg(rc == VINF_SUCCESS \|\| rc == VINF_EM_HALT \|\| rc == VERR_EM_INTERPRETER,
6360	("hmR0SvmExitMwait: EMInterpretMWait failed rc=%Rrc\n", rc));
6361	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMwait);
6362	return rc;
6363	}
6364
6365
6366	/**
6367	* \#VMEXIT handler for shutdown (triple-fault) (SVM_EXIT_SHUTDOWN). Conditional
6368	* \#VMEXIT.
6369	*/
6370	HMSVM_EXIT_DECL hmR0SvmExitShutdown(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6371	{
6372	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6373	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
6374	return VINF_EM_RESET;
6375	}
6376
6377
6378	/**
6379	* \#VMEXIT handler for unexpected exits. Conditional \#VMEXIT.
6380	*/
6381	HMSVM_EXIT_DECL hmR0SvmExitUnexpected(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6382	{
6383	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6384	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
6385	AssertMsgFailed(("hmR0SvmExitUnexpected: ExitCode=%#RX64 uExitInfo1=%#RX64 uExitInfo2=%#RX64\n", pSvmTransient->u64ExitCode,
6386	pVmcb->ctrl.u64ExitInfo1, pVmcb->ctrl.u64ExitInfo2));
6387	RT_NOREF(pVmcb);
6388	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
6389	return VERR_SVM_UNEXPECTED_EXIT;
6390	}
6391
6392
6393	/**
6394	* \#VMEXIT handler for CRx reads (SVM_EXIT_READ_CR*). Conditional \#VMEXIT.
6395	*/
6396	HMSVM_EXIT_DECL hmR0SvmExitReadCRx(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6397	{
6398	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6399
6400	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6401	Log4Func(("CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
6402	#ifdef VBOX_WITH_STATISTICS
6403	switch (pSvmTransient->u64ExitCode)
6404	{
6405	case SVM_EXIT_READ_CR0: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR0Read); break;
6406	case SVM_EXIT_READ_CR2: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR2Read); break;
6407	case SVM_EXIT_READ_CR3: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR3Read); break;
6408	case SVM_EXIT_READ_CR4: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR4Read); break;
6409	case SVM_EXIT_READ_CR8: STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR8Read); break;
6410	}
6411	#endif
6412
6413	bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu);
6414	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6415	if ( fSupportsDecodeAssists
6416	&& fSupportsNextRipSave)
6417	{
6418	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6419	bool const fMovCRx = RT_BOOL(pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_MASK);
6420	if (fMovCRx)
6421	{
6422	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6423	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
6424	uint8_t const iCrReg = pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0;
6425	uint8_t const iGReg = pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_GPR_NUMBER;
6426	VBOXSTRICTRC rcStrict = IEMExecDecodedMovCRxRead(pVCpu, cbInstr, iGReg, iCrReg);
6427	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6428	return VBOXSTRICTRC_VAL(rcStrict);
6429	}
6430	/* else: SMSW instruction, fall back below to IEM for this. */
6431	}
6432
6433	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
6434	VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
6435	int rc = VBOXSTRICTRC_VAL(rc2);
6436	AssertMsg(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3,
6437	("hmR0SvmExitReadCRx: EMInterpretInstruction failed rc=%Rrc\n", rc));
6438	Assert((pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0) <= 15);
6439	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6440	return rc;
6441	}
6442
6443
6444	/**
6445	* \#VMEXIT handler for CRx writes (SVM_EXIT_WRITE_CR*). Conditional \#VMEXIT.
6446	*/
6447	HMSVM_EXIT_DECL hmR0SvmExitWriteCRx(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6448	{
6449	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6450
6451	uint64_t const uExitCode = pSvmTransient->u64ExitCode;
6452	uint8_t const iCrReg = uExitCode == SVM_EXIT_CR0_SEL_WRITE ? 0 : (pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0);
6453	Assert(iCrReg <= 15);
6454
6455	VBOXSTRICTRC rcStrict = VERR_SVM_IPE_5;
6456	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6457	bool fDecodedInstr = false;
6458	bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu);
6459	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6460	if ( fSupportsDecodeAssists
6461	&& fSupportsNextRipSave)
6462	{
6463	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6464	bool const fMovCRx = RT_BOOL(pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_MASK);
6465	if (fMovCRx)
6466	{
6467	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6468	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
6469	uint8_t const iGReg = pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_GPR_NUMBER;
6470	Log4Func(("Mov CR%u w/ iGReg=%#x\n", iCrReg, iGReg));
6471	rcStrict = IEMExecDecodedMovCRxWrite(pVCpu, cbInstr, iCrReg, iGReg);
6472	fDecodedInstr = true;
6473	}
6474	/* else: LMSW or CLTS instruction, fall back below to IEM for this. */
6475	}
6476
6477	if (!fDecodedInstr)
6478	{
6479	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6480	Log4Func(("iCrReg=%#x\n", iCrReg));
6481	rcStrict = IEMExecOneBypassEx(pVCpu, CPUMCTX2CORE(pCtx), NULL);
6482	if (RT_UNLIKELY( rcStrict == VERR_IEM_ASPECT_NOT_IMPLEMENTED
6483	\|\| rcStrict == VERR_IEM_INSTR_NOT_IMPLEMENTED))
6484	rcStrict = VERR_EM_INTERPRETER;
6485	}
6486
6487	if (rcStrict == VINF_SUCCESS)
6488	{
6489	switch (iCrReg)
6490	{
6491	case 0:
6492	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR0);
6493	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR0Write);
6494	break;
6495
6496	case 2:
6497	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR2);
6498	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR2Write);
6499	break;
6500
6501	case 3:
6502	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR3);
6503	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR3Write);
6504	break;
6505
6506	case 4:
6507	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_CR4);
6508	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR4Write);
6509	break;
6510
6511	case 8:
6512	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
6513	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCR8Write);
6514	break;
6515
6516	default:
6517	{
6518	AssertMsgFailed(("hmR0SvmExitWriteCRx: Invalid/Unexpected Write-CRx exit. u64ExitCode=%#RX64 %#x\n",
6519	pSvmTransient->u64ExitCode, iCrReg));
6520	break;
6521	}
6522	}
6523	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6524	}
6525	else
6526	Assert(rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_PGM_CHANGE_MODE \|\| rcStrict == VINF_PGM_SYNC_CR3);
6527	return VBOXSTRICTRC_TODO(rcStrict);
6528	}
6529
6530
6531	/**
6532	* \#VMEXIT helper for read MSRs, see hmR0SvmExitMsr.
6533	*
6534	* @returns Strict VBox status code.
6535	* @param pVCpu The cross context virtual CPU structure.
6536	* @param pVmcb Pointer to the VM control block.
6537	*/
6538	static VBOXSTRICTRC hmR0SvmExitReadMsr(PVMCPU pVCpu, PSVMVMCB pVmcb)
6539	{
6540	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6541	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
6542	Log4Func(("idMsr=%#RX32\n", pCtx->ecx));
6543
6544	VBOXSTRICTRC rcStrict;
6545	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6546	if (fSupportsNextRipSave)
6547	{
6548	/** @todo Optimize this: Only retrieve the MSR bits we need here. CPUMAllMsrs.cpp
6549	* can ask for what it needs instead of using CPUMCTX_EXTRN_ALL_MSRS. */
6550	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK \| CPUMCTX_EXTRN_ALL_MSRS);
6551	rcStrict = IEMExecDecodedRdmsr(pVCpu, pVmcb->ctrl.u64NextRIP - pCtx->rip);
6552	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
6553	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict); /* RIP updated by IEMExecDecodedRdmsr(). */
6554	else
6555	AssertMsg( rcStrict == VINF_IEM_RAISED_XCPT
6556	\|\| rcStrict == VINF_CPUM_R3_MSR_WRITE,
6557	("Unexpected IEMExecDecodedWrmsr status: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
6558	}
6559	else
6560	{
6561	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_ALL_MSRS);
6562	rcStrict = IEMExecOne(pVCpu);
6563	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
6564	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict); /* RIP updated by IEMExecOne(). */
6565	else
6566	AssertMsg( rcStrict == VINF_IEM_RAISED_XCPT
6567	\|\| rcStrict == VINF_CPUM_R3_MSR_READ, ("Unexpected IEMExecOne status: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
6568	}
6569	return rcStrict;
6570	}
6571
6572
6573	/**
6574	* \#VMEXIT helper for write MSRs, see hmR0SvmExitMsr.
6575	*
6576	* @returns Strict VBox status code.
6577	* @param pVCpu The cross context virtual CPU structure.
6578	* @param pVmcb Pointer to the VM control block.
6579	* @param pSvmTransient Pointer to the SVM-transient structure.
6580	*/
6581	static VBOXSTRICTRC hmR0SvmExitWriteMsr(PVMCPU pVCpu, PSVMVMCB pVmcb, PSVMTRANSIENT pSvmTransient)
6582	{
6583	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6584	uint32_t const idMsr = pCtx->ecx;
6585	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
6586	Log4Func(("idMsr=%#RX32\n", idMsr));
6587
6588	/*
6589	* Handle TPR patching MSR writes.
6590	* We utilitize the LSTAR MSR for patching.
6591	*/
6592	if ( pVCpu->CTX_SUFF(pVM)->hm.s.fTPRPatchingActive
6593	&& idMsr == MSR_K8_LSTAR)
6594	{
6595	if ((pCtx->eax & 0xff) != pSvmTransient->u8GuestTpr)
6596	{
6597	/* Our patch code uses LSTAR for TPR caching for 32-bit guests. */
6598	int rc2 = APICSetTpr(pVCpu, pCtx->eax & 0xff);
6599	AssertRC(rc2);
6600	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
6601	}
6602
6603	int rc = VINF_SUCCESS;
6604	hmR0SvmAdvanceRipHwAssist(pVCpu, 2);
6605	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6606	return rc;
6607	}
6608
6609	/*
6610	* Handle regular MSR writes.
6611	*/
6612	VBOXSTRICTRC rcStrict;
6613	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6614	if (fSupportsNextRipSave)
6615	{
6616	/** @todo Optimize this: We don't need to get much of the MSR state here
6617	* since we're only updating. CPUMAllMsrs.cpp can ask for what it needs and
6618	* clear the applicable extern flags. */
6619	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_EXEC_DECODED_NO_MEM_MASK \| CPUMCTX_EXTRN_ALL_MSRS);
6620	rcStrict = IEMExecDecodedWrmsr(pVCpu, pVmcb->ctrl.u64NextRIP - pCtx->rip);
6621	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
6622	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict); /* RIP updated by IEMExecDecodedWrmsr(). */
6623	else
6624	AssertMsg( rcStrict == VINF_IEM_RAISED_XCPT
6625	\|\| rcStrict == VINF_CPUM_R3_MSR_WRITE,
6626	("Unexpected IEMExecDecodedWrmsr status: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
6627	}
6628	else
6629	{
6630	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_ALL_MSRS);
6631	rcStrict = IEMExecOne(pVCpu);
6632	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
6633	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict); /* RIP updated by IEMExecOne(). */
6634	else
6635	AssertMsg( rcStrict == VINF_IEM_RAISED_XCPT
6636	\|\| rcStrict == VINF_CPUM_R3_MSR_WRITE, ("Unexpected IEMExecOne status: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
6637	}
6638
6639	if (rcStrict == VINF_SUCCESS)
6640	{
6641	/* If this is an X2APIC WRMSR access, update the APIC TPR state. */
6642	if ( idMsr >= MSR_IA32_X2APIC_START
6643	&& idMsr <= MSR_IA32_X2APIC_END)
6644	{
6645	/*
6646	* We've already saved the APIC related guest-state (TPR) in hmR0SvmPostRunGuest().
6647	* When full APIC register virtualization is implemented we'll have to make sure
6648	* APIC state is saved from the VMCB before IEM changes it.
6649	*/
6650	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
6651	}
6652	else
6653	{
6654	switch (idMsr)
6655	{
6656	case MSR_IA32_TSC: pSvmTransient->fUpdateTscOffsetting = true; break;
6657	case MSR_K6_EFER: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_EFER_MSR); break;
6658	case MSR_K8_FS_BASE: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_FS); break;
6659	case MSR_K8_GS_BASE: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_GS); break;
6660	case MSR_IA32_SYSENTER_CS: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_SYSENTER_CS_MSR); break;
6661	case MSR_IA32_SYSENTER_EIP: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_SYSENTER_EIP_MSR); break;
6662	case MSR_IA32_SYSENTER_ESP: ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_SYSENTER_ESP_MSR); break;
6663	}
6664	}
6665	}
6666
6667	return rcStrict;
6668	}
6669
6670
6671	/**
6672	* \#VMEXIT handler for MSR read and writes (SVM_EXIT_MSR). Conditional
6673	* \#VMEXIT.
6674	*/
6675	HMSVM_EXIT_DECL hmR0SvmExitMsr(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6676	{
6677	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6678
6679	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6680	if (pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_READ)
6681	return VBOXSTRICTRC_TODO(hmR0SvmExitReadMsr(pVCpu, pVmcb));
6682
6683	Assert(pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_WRITE);
6684	return VBOXSTRICTRC_TODO(hmR0SvmExitWriteMsr(pVCpu, pVmcb, pSvmTransient));
6685	}
6686
6687
6688	/**
6689	* \#VMEXIT handler for DRx read (SVM_EXIT_READ_DRx). Conditional \#VMEXIT.
6690	*/
6691	HMSVM_EXIT_DECL hmR0SvmExitReadDRx(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6692	{
6693	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6694	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
6695
6696	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
6697
6698	/** @todo Stepping with nested-guest. */
6699	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6700	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
6701	{
6702	/* We should -not- get this #VMEXIT if the guest's debug registers were active. */
6703	if (pSvmTransient->fWasGuestDebugStateActive)
6704	{
6705	AssertMsgFailed(("hmR0SvmExitReadDRx: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
6706	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
6707	return VERR_SVM_UNEXPECTED_EXIT;
6708	}
6709
6710	/*
6711	* Lazy DR0-3 loading.
6712	*/
6713	if (!pSvmTransient->fWasHyperDebugStateActive)
6714	{
6715	Assert(!DBGFIsStepping(pVCpu)); Assert(!pVCpu->hm.s.fSingleInstruction);
6716	Log5(("hmR0SvmExitReadDRx: Lazy loading guest debug registers\n"));
6717
6718	/* Don't intercept DRx read and writes. */
6719	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
6720	pVmcb->ctrl.u16InterceptRdDRx = 0;
6721	pVmcb->ctrl.u16InterceptWrDRx = 0;
6722	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
6723
6724	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
6725	VMMRZCallRing3Disable(pVCpu);
6726	HM_DISABLE_PREEMPT();
6727
6728	/* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
6729	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
6730	Assert(CPUMIsGuestDebugStateActive(pVCpu) \|\| HC_ARCH_BITS == 32);
6731
6732	HM_RESTORE_PREEMPT();
6733	VMMRZCallRing3Enable(pVCpu);
6734
6735	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
6736	return VINF_SUCCESS;
6737	}
6738	}
6739
6740	/*
6741	* Interpret the read/writing of DRx.
6742	*/
6743	/** @todo Decode assist. */
6744	VBOXSTRICTRC rc = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
6745	Log5(("hmR0SvmExitReadDRx: Emulated DRx access: rc=%Rrc\n", VBOXSTRICTRC_VAL(rc)));
6746	if (RT_LIKELY(rc == VINF_SUCCESS))
6747	{
6748	/* Not necessary for read accesses but whatever doesn't hurt for now, will be fixed with decode assist. */
6749	/** @todo CPUM should set this flag! */
6750	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_DR_MASK);
6751	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6752	}
6753	else
6754	Assert(rc == VERR_EM_INTERPRETER);
6755	return VBOXSTRICTRC_TODO(rc);
6756	}
6757
6758
6759	/**
6760	* \#VMEXIT handler for DRx write (SVM_EXIT_WRITE_DRx). Conditional \#VMEXIT.
6761	*/
6762	HMSVM_EXIT_DECL hmR0SvmExitWriteDRx(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6763	{
6764	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6765	/* For now it's the same since we interpret the instruction anyway. Will change when using of Decode Assist is implemented. */
6766	int rc = hmR0SvmExitReadDRx(pVCpu, pSvmTransient);
6767	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
6768	STAM_COUNTER_DEC(&pVCpu->hm.s.StatExitDRxRead);
6769	return rc;
6770	}
6771
6772
6773	/**
6774	* \#VMEXIT handler for XCRx write (SVM_EXIT_XSETBV). Conditional \#VMEXIT.
6775	*/
6776	HMSVM_EXIT_DECL hmR0SvmExitXsetbv(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6777	{
6778	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6779	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
6780
6781	/** @todo decode assists... */
6782	VBOXSTRICTRC rcStrict = IEMExecOne(pVCpu);
6783	if (rcStrict == VINF_IEM_RAISED_XCPT)
6784	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_XCPT_RAISED_MASK);
6785
6786	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6787	pVCpu->hm.s.fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
6788	Log4Func(("New XCR0=%#RX64 fLoadSaveGuestXcr0=%d (cr4=%RX64) rcStrict=%Rrc\n", pCtx->aXcr[0], pVCpu->hm.s.fLoadSaveGuestXcr0,
6789	pCtx->cr4, VBOXSTRICTRC_VAL(rcStrict)));
6790
6791	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6792	return VBOXSTRICTRC_TODO(rcStrict);
6793	}
6794
6795
6796	/**
6797	* \#VMEXIT handler for I/O instructions (SVM_EXIT_IOIO). Conditional \#VMEXIT.
6798	*/
6799	HMSVM_EXIT_DECL hmR0SvmExitIOInstr(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
6800	{
6801	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
6802	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_SREG_MASK);
6803
6804	/* I/O operation lookup arrays. */
6805	static uint32_t const s_aIOSize[8] = { 0, 1, 2, 0, 4, 0, 0, 0 }; /* Size of the I/O accesses in bytes. */
6806	static uint32_t const s_aIOOpAnd[8] = { 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 }; /* AND masks for saving
6807	the result (in AL/AX/EAX). */
6808	PVM pVM = pVCpu->CTX_SUFF(pVM);
6809	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
6810	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
6811
6812	Log4Func(("CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
6813
6814	/* Refer AMD spec. 15.10.2 "IN and OUT Behaviour" and Figure 15-2. "EXITINFO1 for IOIO Intercept" for the format. */
6815	SVMIOIOEXITINFO IoExitInfo;
6816	IoExitInfo.u = (uint32_t)pVmcb->ctrl.u64ExitInfo1;
6817	uint32_t uIOWidth = (IoExitInfo.u >> 4) & 0x7;
6818	uint32_t cbValue = s_aIOSize[uIOWidth];
6819	uint32_t uAndVal = s_aIOOpAnd[uIOWidth];
6820
6821	if (RT_UNLIKELY(!cbValue))
6822	{
6823	AssertMsgFailed(("hmR0SvmExitIOInstr: Invalid IO operation. uIOWidth=%u\n", uIOWidth));
6824	return VERR_EM_INTERPRETER;
6825	}
6826
6827	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP \| CPUMCTX_EXTRN_RFLAGS);
6828	VBOXSTRICTRC rcStrict;
6829	PCEMEXITREC pExitRec = NULL;
6830	if ( !pVCpu->hm.s.fSingleInstruction
6831	&& !pVCpu->cpum.GstCtx.eflags.Bits.u1TF)
6832	pExitRec = EMHistoryUpdateFlagsAndTypeAndPC(pVCpu,
6833	!IoExitInfo.n.u1Str
6834	? IoExitInfo.n.u1Type == SVM_IOIO_READ
6835	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_READ)
6836	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_WRITE)
6837	: IoExitInfo.n.u1Type == SVM_IOIO_READ
6838	? EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_STR_READ)
6839	: EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_IO_PORT_STR_WRITE),
6840	pVCpu->cpum.GstCtx.rip + pVCpu->cpum.GstCtx.cs.u64Base);
6841	if (!pExitRec)
6842	{
6843	bool fUpdateRipAlready = false;
6844	if (IoExitInfo.n.u1Str)
6845	{
6846	/* INS/OUTS - I/O String instruction. */
6847	/** @todo Huh? why can't we use the segment prefix information given by AMD-V
6848	* in EXITINFO1? Investigate once this thing is up and running. */
6849	Log4Func(("CS:RIP=%04x:%08RX64 %#06x/%u %c str\n", pCtx->cs.Sel, pCtx->rip, IoExitInfo.n.u16Port, cbValue,
6850	IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? 'w' : 'r'));
6851	AssertReturn(pCtx->dx == IoExitInfo.n.u16Port, VERR_SVM_IPE_2);
6852	static IEMMODE const s_aenmAddrMode[8] =
6853	{
6854	(IEMMODE)-1, IEMMODE_16BIT, IEMMODE_32BIT, (IEMMODE)-1, IEMMODE_64BIT, (IEMMODE)-1, (IEMMODE)-1, (IEMMODE)-1
6855	};
6856	IEMMODE enmAddrMode = s_aenmAddrMode[(IoExitInfo.u >> 7) & 0x7];
6857	if (enmAddrMode != (IEMMODE)-1)
6858	{
6859	uint64_t cbInstr = pVmcb->ctrl.u64ExitInfo2 - pCtx->rip;
6860	if (cbInstr <= 15 && cbInstr >= 1)
6861	{
6862	Assert(cbInstr >= 1U + IoExitInfo.n.u1Rep);
6863	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
6864	{
6865	/* Don't know exactly how to detect whether u3Seg is valid, currently
6866	only enabling it for Bulldozer and later with NRIP. OS/2 broke on
6867	2384 Opterons when only checking NRIP. */
6868	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu);
6869	if ( fSupportsNextRipSave
6870	&& pVM->cpum.ro.GuestFeatures.enmMicroarch >= kCpumMicroarch_AMD_15h_First)
6871	{
6872	AssertMsg(IoExitInfo.n.u3Seg == X86_SREG_DS \|\| cbInstr > 1U + IoExitInfo.n.u1Rep,
6873	("u32Seg=%d cbInstr=%d u1REP=%d", IoExitInfo.n.u3Seg, cbInstr, IoExitInfo.n.u1Rep));
6874	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1Rep, (uint8_t)cbInstr,
6875	IoExitInfo.n.u3Seg, true /fIoChecked/);
6876	}
6877	else if (cbInstr == 1U + IoExitInfo.n.u1Rep)
6878	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1Rep, (uint8_t)cbInstr,
6879	X86_SREG_DS, true /fIoChecked/);
6880	else
6881	rcStrict = IEMExecOne(pVCpu);
6882	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
6883	}
6884	else
6885	{
6886	AssertMsg(IoExitInfo.n.u3Seg == X86_SREG_ES /=0/, ("%#x\n", IoExitInfo.n.u3Seg));
6887	rcStrict = IEMExecStringIoRead(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1Rep, (uint8_t)cbInstr,
6888	true /fIoChecked/);
6889	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
6890	}
6891	}
6892	else
6893	{
6894	AssertMsgFailed(("rip=%RX64 nrip=%#RX64 cbInstr=%#RX64\n", pCtx->rip, pVmcb->ctrl.u64ExitInfo2, cbInstr));
6895	rcStrict = IEMExecOne(pVCpu);
6896	}
6897	}
6898	else
6899	{
6900	AssertMsgFailed(("IoExitInfo=%RX64\n", IoExitInfo.u));
6901	rcStrict = IEMExecOne(pVCpu);
6902	}
6903	fUpdateRipAlready = true;
6904	}
6905	else
6906	{
6907	/* IN/OUT - I/O instruction. */
6908	Assert(!IoExitInfo.n.u1Rep);
6909
6910	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
6911	{
6912	rcStrict = IOMIOPortWrite(pVM, pVCpu, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, cbValue);
6913	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
6914	}
6915	else
6916	{
6917	uint32_t u32Val = 0;
6918	rcStrict = IOMIOPortRead(pVM, pVCpu, IoExitInfo.n.u16Port, &u32Val, cbValue);
6919	if (IOM_SUCCESS(rcStrict))
6920	{
6921	/* Save result of I/O IN instr. in AL/AX/EAX. */
6922	/** @todo r=bird: 32-bit op size should clear high bits of rax! */
6923	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
6924	}
6925	else if (rcStrict == VINF_IOM_R3_IOPORT_READ)
6926	{
6927	HMR0SavePendingIOPortRead(pVCpu, pVCpu->cpum.GstCtx.rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port,
6928	uAndVal, cbValue);
6929	}
6930
6931	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
6932	}
6933	}
6934
6935	if (IOM_SUCCESS(rcStrict))
6936	{
6937	/* AMD-V saves the RIP of the instruction following the IO instruction in EXITINFO2. */
6938	if (!fUpdateRipAlready)
6939	pCtx->rip = pVmcb->ctrl.u64ExitInfo2;
6940
6941	/*
6942	* If any I/O breakpoints are armed, we need to check if one triggered
6943	* and take appropriate action.
6944	* Note that the I/O breakpoint type is undefined if CR4.DE is 0.
6945	*/
6946	/** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
6947	* execution engines about whether hyper BPs and such are pending. */
6948	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_DR7);
6949	uint32_t const uDr7 = pCtx->dr[7];
6950	if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
6951	&& X86_DR7_ANY_RW_IO(uDr7)
6952	&& (pCtx->cr4 & X86_CR4_DE))
6953	\|\| DBGFBpIsHwIoArmed(pVM)))
6954	{
6955	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
6956	VMMRZCallRing3Disable(pVCpu);
6957	HM_DISABLE_PREEMPT();
6958
6959	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
6960	CPUMR0DebugStateMaybeSaveGuest(pVCpu, false /fDr6/);
6961
6962	VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, &pVCpu->cpum.GstCtx, IoExitInfo.n.u16Port, cbValue);
6963	if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
6964	{
6965	/* Raise #DB. */
6966	pVmcb->guest.u64DR6 = pCtx->dr[6];
6967	pVmcb->guest.u64DR7 = pCtx->dr[7];
6968	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
6969	hmR0SvmSetPendingXcptDB(pVCpu);
6970	}
6971	/* rcStrict is VINF_SUCCESS, VINF_IOM_R3_IOPORT_COMMIT_WRITE, or in [VINF_EM_FIRST..VINF_EM_LAST],
6972	however we can ditch VINF_IOM_R3_IOPORT_COMMIT_WRITE as it has VMCPU_FF_IOM as backup. */
6973	else if ( rcStrict2 != VINF_SUCCESS
6974	&& (rcStrict == VINF_SUCCESS \|\| rcStrict2 < rcStrict))
6975	rcStrict = rcStrict2;
6976	AssertCompile(VINF_EM_LAST < VINF_IOM_R3_IOPORT_COMMIT_WRITE);
6977
6978	HM_RESTORE_PREEMPT();
6979	VMMRZCallRing3Enable(pVCpu);
6980	}
6981
6982	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6983	}
6984
6985	#ifdef VBOX_STRICT
6986	if (rcStrict == VINF_IOM_R3_IOPORT_READ)
6987	Assert(IoExitInfo.n.u1Type == SVM_IOIO_READ);
6988	else if (rcStrict == VINF_IOM_R3_IOPORT_WRITE \|\| rcStrict == VINF_IOM_R3_IOPORT_COMMIT_WRITE)
6989	Assert(IoExitInfo.n.u1Type == SVM_IOIO_WRITE);
6990	else
6991	{
6992	/** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
6993	* statuses, that the VMM device and some others may return. See
6994	* IOM_SUCCESS() for guidance. */
6995	AssertMsg( RT_FAILURE(rcStrict)
6996	\|\| rcStrict == VINF_SUCCESS
6997	\|\| rcStrict == VINF_EM_RAW_EMULATE_INSTR
6998	\|\| rcStrict == VINF_EM_DBG_BREAKPOINT
6999	\|\| rcStrict == VINF_EM_RAW_GUEST_TRAP
7000	\|\| rcStrict == VINF_EM_RAW_TO_R3
7001	\|\| rcStrict == VINF_TRPM_XCPT_DISPATCHED
7002	\|\| rcStrict == VINF_EM_TRIPLE_FAULT, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
7003	}
7004	#endif
7005	}
7006	else
7007	{
7008	/*
7009	* Frequent exit or something needing probing. Get state and call EMHistoryExec.
7010	*/
7011	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7012	STAM_COUNTER_INC(!IoExitInfo.n.u1Str
7013	? IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? &pVCpu->hm.s.StatExitIOWrite : &pVCpu->hm.s.StatExitIORead
7014	: IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? &pVCpu->hm.s.StatExitIOStringWrite : &pVCpu->hm.s.StatExitIOStringRead);
7015	Log4(("IOExit/%u: %04x:%08RX64: %s%s%s %#x LB %u -> EMHistoryExec\n",
7016	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, IoExitInfo.n.u1Rep ? "REP " : "",
7017	IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? "OUT" : "IN", IoExitInfo.n.u1Str ? "S" : "", IoExitInfo.n.u16Port, uIOWidth));
7018
7019	rcStrict = EMHistoryExec(pVCpu, pExitRec, 0);
7020	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
7021
7022	Log4(("IOExit/%u: %04x:%08RX64: EMHistoryExec -> %Rrc + %04x:%08RX64\n",
7023	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
7024	VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
7025	}
7026	return VBOXSTRICTRC_TODO(rcStrict);
7027	}
7028
7029
7030	/**
7031	* \#VMEXIT handler for Nested Page-faults (SVM_EXIT_NPF). Conditional \#VMEXIT.
7032	*/
7033	HMSVM_EXIT_DECL hmR0SvmExitNestedPF(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7034	{
7035	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7036	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7037	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7038
7039	PVM pVM = pVCpu->CTX_SUFF(pVM);
7040	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7041	Assert(pVM->hm.s.fNestedPaging);
7042
7043	/* See AMD spec. 15.25.6 "Nested versus Guest Page Faults, Fault Ordering" for VMCB details for #NPF. */
7044	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7045	RTGCPHYS GCPhysFaultAddr = pVmcb->ctrl.u64ExitInfo2;
7046	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1; /* Note! High bits in EXITINFO1 may contain additional info and are
7047	thus intentionally not copied into u32ErrCode. */
7048
7049	Log4Func(("#NPF at CS:RIP=%04x:%#RX64 GCPhysFaultAddr=%RGp ErrCode=%#x \n", pCtx->cs.Sel, pCtx->rip, GCPhysFaultAddr,
7050	u32ErrCode));
7051
7052	/*
7053	* TPR patching for 32-bit guests, using the reserved bit in the page tables for MMIO regions.
7054	*/
7055	if ( pVM->hm.s.fTprPatchingAllowed
7056	&& (GCPhysFaultAddr & PAGE_OFFSET_MASK) == XAPIC_OFF_TPR
7057	&& ( !(u32ErrCode & X86_TRAP_PF_P) /* Not present */
7058	\|\| (u32ErrCode & (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) /* MMIO page. */
7059	&& !CPUMIsGuestInSvmNestedHwVirtMode(pCtx)
7060	&& !CPUMIsGuestInLongModeEx(pCtx)
7061	&& !CPUMGetGuestCPL(pVCpu)
7062	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
7063	{
7064	RTGCPHYS GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
7065	GCPhysApicBase &= PAGE_BASE_GC_MASK;
7066
7067	if (GCPhysFaultAddr == GCPhysApicBase + XAPIC_OFF_TPR)
7068	{
7069	/* Only attempt to patch the instruction once. */
7070	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
7071	if (!pPatch)
7072	return VINF_EM_HM_PATCH_TPR_INSTR;
7073	}
7074	}
7075
7076	/*
7077	* Determine the nested paging mode.
7078	*/
7079	PGMMODE enmNestedPagingMode;
7080	#if HC_ARCH_BITS == 32
7081	if (CPUMIsGuestInLongModeEx(pCtx))
7082	enmNestedPagingMode = PGMMODE_AMD64_NX;
7083	else
7084	#endif
7085	enmNestedPagingMode = PGMGetHostMode(pVM);
7086
7087	/*
7088	* MMIO optimization using the reserved (RSVD) bit in the guest page tables for MMIO pages.
7089	*/
7090	Assert((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
7091	if ((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P))
7092	{
7093	/*
7094	* If event delivery causes an MMIO #NPF, go back to instruction emulation as otherwise
7095	* injecting the original pending event would most likely cause the same MMIO #NPF.
7096	*/
7097	if (pVCpu->hm.s.Event.fPending)
7098	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7099
7100	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_RIP);
7101	VBOXSTRICTRC rcStrict;
7102	PCEMEXITREC pExitRec = EMHistoryUpdateFlagsAndTypeAndPC(pVCpu,
7103	EMEXIT_MAKE_FT(EMEXIT_F_KIND_EM \| EMEXIT_F_HM, EMEXITTYPE_MMIO),
7104	pVCpu->cpum.GstCtx.rip + pVCpu->cpum.GstCtx.cs.u64Base);
7105	if (!pExitRec)
7106	{
7107
7108	rcStrict = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmNestedPagingMode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr,
7109	u32ErrCode);
7110
7111	/*
7112	* If we succeed, resume guest execution.
7113	*
7114	* If we fail in interpreting the instruction because we couldn't get the guest
7115	* physical address of the page containing the instruction via the guest's page
7116	* tables (we would invalidate the guest page in the host TLB), resume execution
7117	* which would cause a guest page fault to let the guest handle this weird case.
7118	*
7119	* See @bugref{6043}.
7120	*/
7121	if ( rcStrict == VINF_SUCCESS
7122	\|\| rcStrict == VERR_PAGE_TABLE_NOT_PRESENT
7123	\|\| rcStrict == VERR_PAGE_NOT_PRESENT)
7124	{
7125	/* Successfully handled MMIO operation. */
7126	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_APIC_TPR);
7127	rcStrict = VINF_SUCCESS;
7128	}
7129	}
7130	else
7131	{
7132	/*
7133	* Frequent exit or something needing probing. Get state and call EMHistoryExec.
7134	*/
7135	Assert(pCtx == &pVCpu->cpum.GstCtx);
7136	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7137	Log4(("EptMisscfgExit/%u: %04x:%08RX64: %RGp -> EMHistoryExec\n",
7138	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, GCPhysFaultAddr));
7139
7140	rcStrict = EMHistoryExec(pVCpu, pExitRec, 0);
7141	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
7142
7143	Log4(("EptMisscfgExit/%u: %04x:%08RX64: EMHistoryExec -> %Rrc + %04x:%08RX64\n",
7144	pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
7145	VBOXSTRICTRC_VAL(rcStrict), pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
7146	}
7147	return VBOXSTRICTRC_TODO(rcStrict);
7148	}
7149
7150	TRPMAssertXcptPF(pVCpu, GCPhysFaultAddr, u32ErrCode);
7151	int rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmNestedPagingMode, u32ErrCode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr);
7152	TRPMResetTrap(pVCpu);
7153
7154	Log4Func(("#NPF: PGMR0Trap0eHandlerNestedPaging returns %Rrc CS:RIP=%04x:%#RX64\n", rc, pCtx->cs.Sel, pCtx->rip));
7155
7156	/*
7157	* Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}.
7158	*/
7159	if ( rc == VINF_SUCCESS
7160	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
7161	\|\| rc == VERR_PAGE_NOT_PRESENT)
7162	{
7163	/* We've successfully synced our shadow page tables. */
7164	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
7165	rc = VINF_SUCCESS;
7166	}
7167
7168	return rc;
7169	}
7170
7171
7172	/**
7173	* \#VMEXIT handler for virtual interrupt (SVM_EXIT_VINTR). Conditional
7174	* \#VMEXIT.
7175	*/
7176	HMSVM_EXIT_DECL hmR0SvmExitVIntr(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7177	{
7178	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7179	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(&pVCpu->cpum.GstCtx);
7180
7181	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
7182	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7183	hmR0SvmClearIntWindowExiting(pVCpu, pVmcb);
7184
7185	/* Deliver the pending interrupt via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
7186	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
7187	return VINF_SUCCESS;
7188	}
7189
7190
7191	/**
7192	* \#VMEXIT handler for task switches (SVM_EXIT_TASK_SWITCH). Conditional
7193	* \#VMEXIT.
7194	*/
7195	HMSVM_EXIT_DECL hmR0SvmExitTaskSwitch(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7196	{
7197	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7198	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7199
7200	#ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
7201	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
7202	#endif
7203
7204	/* Check if this task-switch occurred while delivering an event through the guest IDT. */
7205	if (pVCpu->hm.s.Event.fPending) /* Can happen with exceptions/NMI. See @bugref{8411}. */
7206	{
7207	/*
7208	* AMD-V provides us with the exception which caused the TS; we collect
7209	* the information in the call to hmR0SvmCheckExitDueToEventDelivery().
7210	*/
7211	Log4Func(("TS occurred during event delivery\n"));
7212	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
7213	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7214	}
7215
7216	/** @todo Emulate task switch someday, currently just going back to ring-3 for
7217	* emulation. */
7218	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
7219	return VERR_EM_INTERPRETER;
7220	}
7221
7222
7223	/**
7224	* \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
7225	*/
7226	HMSVM_EXIT_DECL hmR0SvmExitVmmCall(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7227	{
7228	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7229	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7230
7231	if (pVCpu->CTX_SUFF(pVM)->hm.s.fTprPatchingAllowed)
7232	{
7233	int rc = hmSvmEmulateMovTpr(pVCpu);
7234	if (rc != VERR_NOT_FOUND)
7235	{
7236	Log4Func(("hmSvmEmulateMovTpr returns %Rrc\n", rc));
7237	return rc;
7238	}
7239	}
7240
7241	if (EMAreHypercallInstructionsEnabled(pVCpu))
7242	{
7243	VBOXSTRICTRC rcStrict = GIMHypercall(pVCpu, &pVCpu->cpum.GstCtx);
7244	if (RT_SUCCESS(rcStrict))
7245	{
7246	/* Only update the RIP if we're continuing guest execution and not in the case
7247	of say VINF_GIM_R3_HYPERCALL. */
7248	if (rcStrict == VINF_SUCCESS)
7249	hmR0SvmAdvanceRipHwAssist(pVCpu, 3 /* cbInstr */);
7250
7251	return VBOXSTRICTRC_VAL(rcStrict);
7252	}
7253	else
7254	Log4Func(("GIMHypercall returns %Rrc -> #UD\n", VBOXSTRICTRC_VAL(rcStrict)));
7255	}
7256
7257	hmR0SvmSetPendingXcptUD(pVCpu);
7258	return VINF_SUCCESS;
7259	}
7260
7261
7262	/**
7263	* \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
7264	*/
7265	HMSVM_EXIT_DECL hmR0SvmExitPause(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7266	{
7267	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7268	hmR0SvmAdvanceRipHwAssist(pVCpu, 2);
7269	/** @todo The guest has likely hit a contended spinlock. We might want to
7270	* poke a schedule different guest VCPU. */
7271	return VINF_EM_RAW_INTERRUPT;
7272	}
7273
7274
7275	/**
7276	* \#VMEXIT handler for FERR intercept (SVM_EXIT_FERR_FREEZE). Conditional
7277	* \#VMEXIT.
7278	*/
7279	HMSVM_EXIT_DECL hmR0SvmExitFerrFreeze(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7280	{
7281	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7282	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, CPUMCTX_EXTRN_CR0);
7283	Assert(!(pVCpu->cpum.GstCtx.cr0 & X86_CR0_NE));
7284
7285	Log4Func(("Raising IRQ 13 in response to #FERR\n"));
7286	return PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13 /* u8Irq /, 1 / u8Level /, 0 / uTagSrc */);
7287	}
7288
7289
7290	/**
7291	* \#VMEXIT handler for IRET (SVM_EXIT_IRET). Conditional \#VMEXIT.
7292	*/
7293	HMSVM_EXIT_DECL hmR0SvmExitIret(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7294	{
7295	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7296
7297	/* Clear NMI blocking. */
7298	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
7299	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
7300
7301	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
7302	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7303	hmR0SvmClearCtrlIntercept(pVCpu, pVmcb, SVM_CTRL_INTERCEPT_IRET);
7304
7305	/* Deliver the pending NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
7306	return VINF_SUCCESS;
7307	}
7308
7309
7310	/**
7311	* \#VMEXIT handler for page-fault exceptions (SVM_EXIT_XCPT_14).
7312	* Conditional \#VMEXIT.
7313	*/
7314	HMSVM_EXIT_DECL hmR0SvmExitXcptPF(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7315	{
7316	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7317	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7318	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7319
7320	/* See AMD spec. 15.12.15 "#PF (Page Fault)". */
7321	PVM pVM = pVCpu->CTX_SUFF(pVM);
7322	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7323	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7324	uint32_t uErrCode = pVmcb->ctrl.u64ExitInfo1;
7325	uint64_t const uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
7326
7327	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(HMSVM_ALWAYS_TRAP_PF)
7328	if (pVM->hm.s.fNestedPaging)
7329	{
7330	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
7331	if ( !pSvmTransient->fVectoringDoublePF
7332	\|\| CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
7333	{
7334	/* A genuine guest #PF, reflect it to the guest. */
7335	hmR0SvmSetPendingXcptPF(pVCpu, uErrCode, uFaultAddress);
7336	Log4Func(("#PF: Guest page fault at %04X:%RGv FaultAddr=%RX64 ErrCode=%#x\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip,
7337	uFaultAddress, uErrCode));
7338	}
7339	else
7340	{
7341	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
7342	hmR0SvmSetPendingXcptDF(pVCpu);
7343	Log4Func(("Pending #DF due to vectoring #PF. NP\n"));
7344	}
7345	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
7346	return VINF_SUCCESS;
7347	}
7348	#endif
7349
7350	Assert(!pVM->hm.s.fNestedPaging);
7351
7352	/*
7353	* TPR patching shortcut for APIC TPR reads and writes; only applicable to 32-bit guests.
7354	*/
7355	if ( pVM->hm.s.fTprPatchingAllowed
7356	&& (uFaultAddress & 0xfff) == XAPIC_OFF_TPR
7357	&& !(uErrCode & X86_TRAP_PF_P) /* Not present. */
7358	&& !CPUMIsGuestInSvmNestedHwVirtMode(pCtx)
7359	&& !CPUMIsGuestInLongModeEx(pCtx)
7360	&& !CPUMGetGuestCPL(pVCpu)
7361	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
7362	{
7363	RTGCPHYS GCPhysApicBase;
7364	GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
7365	GCPhysApicBase &= PAGE_BASE_GC_MASK;
7366
7367	/* Check if the page at the fault-address is the APIC base. */
7368	RTGCPHYS GCPhysPage;
7369	int rc2 = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL /* pfFlags */, &GCPhysPage);
7370	if ( rc2 == VINF_SUCCESS
7371	&& GCPhysPage == GCPhysApicBase)
7372	{
7373	/* Only attempt to patch the instruction once. */
7374	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
7375	if (!pPatch)
7376	return VINF_EM_HM_PATCH_TPR_INSTR;
7377	}
7378	}
7379
7380	Log4Func(("#PF: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 uErrCode %#RX32 cr3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
7381	pCtx->rip, uErrCode, pCtx->cr3));
7382
7383	/*
7384	* If it's a vectoring #PF, emulate injecting the original event injection as
7385	* PGMTrap0eHandler() is incapable of differentiating between instruction emulation and
7386	* event injection that caused a #PF. See @bugref{6607}.
7387	*/
7388	if (pSvmTransient->fVectoringPF)
7389	{
7390	Assert(pVCpu->hm.s.Event.fPending);
7391	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7392	}
7393
7394	TRPMAssertXcptPF(pVCpu, uFaultAddress, uErrCode);
7395	int rc = PGMTrap0eHandler(pVCpu, uErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
7396
7397	Log4Func(("#PF: rc=%Rrc\n", rc));
7398
7399	if (rc == VINF_SUCCESS)
7400	{
7401	/* Successfully synced shadow pages tables or emulated an MMIO instruction. */
7402	TRPMResetTrap(pVCpu);
7403	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
7404	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_ALL_GUEST);
7405	return rc;
7406	}
7407
7408	if (rc == VINF_EM_RAW_GUEST_TRAP)
7409	{
7410	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
7411
7412	/*
7413	* If a nested-guest delivers a #PF and that causes a #PF which is -not- a shadow #PF,
7414	* we should simply forward the #PF to the guest and is up to the nested-hypervisor to
7415	* determine whether it is a nested-shadow #PF or a #DF, see @bugref{7243#c121}.
7416	*/
7417	if ( !pSvmTransient->fVectoringDoublePF
7418	\|\| CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
7419	{
7420	/* It's a guest (or nested-guest) page fault and needs to be reflected. */
7421	uErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
7422	TRPMResetTrap(pVCpu);
7423
7424	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
7425	/* If the nested-guest is intercepting #PFs, cause a #PF #VMEXIT. */
7426	if ( CPUMIsGuestInSvmNestedHwVirtMode(pCtx)
7427	&& HMIsGuestSvmXcptInterceptSet(pVCpu, X86_XCPT_PF))
7428	return VBOXSTRICTRC_TODO(IEMExecSvmVmexit(pVCpu, SVM_EXIT_XCPT_PF, uErrCode, uFaultAddress));
7429	#endif
7430
7431	hmR0SvmSetPendingXcptPF(pVCpu, uErrCode, uFaultAddress);
7432	}
7433	else
7434	{
7435	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
7436	TRPMResetTrap(pVCpu);
7437	hmR0SvmSetPendingXcptDF(pVCpu);
7438	Log4Func(("#PF: Pending #DF due to vectoring #PF\n"));
7439	}
7440
7441	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
7442	return VINF_SUCCESS;
7443	}
7444
7445	TRPMResetTrap(pVCpu);
7446	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
7447	return rc;
7448	}
7449
7450
7451	/**
7452	* \#VMEXIT handler for undefined opcode (SVM_EXIT_XCPT_6).
7453	* Conditional \#VMEXIT.
7454	*/
7455	HMSVM_EXIT_DECL hmR0SvmExitXcptUD(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7456	{
7457	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7458	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(&pVCpu->cpum.GstCtx);
7459
7460	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
7461	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
7462	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
7463
7464	int rc = VERR_SVM_UNEXPECTED_XCPT_EXIT;
7465	if (pVCpu->hm.s.fGIMTrapXcptUD)
7466	{
7467	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7468	uint8_t cbInstr = 0;
7469	VBOXSTRICTRC rcStrict = GIMXcptUD(pVCpu, &pVCpu->cpum.GstCtx, NULL /* pDis */, &cbInstr);
7470	if (rcStrict == VINF_SUCCESS)
7471	{
7472	/* #UD #VMEXIT does not have valid NRIP information, manually advance RIP. See @bugref{7270#c170}. */
7473	hmR0SvmAdvanceRipDumb(pVCpu, cbInstr);
7474	rc = VINF_SUCCESS;
7475	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
7476	}
7477	else if (rcStrict == VINF_GIM_HYPERCALL_CONTINUING)
7478	rc = VINF_SUCCESS;
7479	else if (rcStrict == VINF_GIM_R3_HYPERCALL)
7480	rc = VINF_GIM_R3_HYPERCALL;
7481	else
7482	Assert(RT_FAILURE(VBOXSTRICTRC_VAL(rcStrict)));
7483	}
7484
7485	/* If the GIM #UD exception handler didn't succeed for some reason or wasn't needed, raise #UD. */
7486	if (RT_FAILURE(rc))
7487	{
7488	hmR0SvmSetPendingXcptUD(pVCpu);
7489	rc = VINF_SUCCESS;
7490	}
7491
7492	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD);
7493	return rc;
7494	}
7495
7496
7497	/**
7498	* \#VMEXIT handler for math-fault exceptions (SVM_EXIT_XCPT_16).
7499	* Conditional \#VMEXIT.
7500	*/
7501	HMSVM_EXIT_DECL hmR0SvmExitXcptMF(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7502	{
7503	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7504	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7505
7506	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7507	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7508
7509	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
7510	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
7511
7512	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
7513
7514	if (!(pCtx->cr0 & X86_CR0_NE))
7515	{
7516	PVM pVM = pVCpu->CTX_SUFF(pVM);
7517	PDISSTATE pDis = &pVCpu->hm.s.DisState;
7518	unsigned cbOp;
7519	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp);
7520	if (RT_SUCCESS(rc))
7521	{
7522	/* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
7523	rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13 /* u8Irq /, 1 / u8Level /, 0 / uTagSrc */);
7524	if (RT_SUCCESS(rc))
7525	pCtx->rip += cbOp;
7526	}
7527	else
7528	Log4Func(("EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
7529	return rc;
7530	}
7531
7532	hmR0SvmSetPendingXcptMF(pVCpu);
7533	return VINF_SUCCESS;
7534	}
7535
7536
7537	/**
7538	* \#VMEXIT handler for debug exceptions (SVM_EXIT_XCPT_1). Conditional
7539	* \#VMEXIT.
7540	*/
7541	HMSVM_EXIT_DECL hmR0SvmExitXcptDB(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7542	{
7543	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7544	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7545	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7546
7547	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
7548	{
7549	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
7550	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7551	}
7552
7553	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
7554
7555	/*
7556	* This can be a fault-type #DB (instruction breakpoint) or a trap-type #DB (data
7557	* breakpoint). However, for both cases DR6 and DR7 are updated to what the exception
7558	* handler expects. See AMD spec. 15.12.2 "#DB (Debug)".
7559	*/
7560	PVM pVM = pVCpu->CTX_SUFF(pVM);
7561	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
7562	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7563	int rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVmcb->guest.u64DR6, pVCpu->hm.s.fSingleInstruction);
7564	if (rc == VINF_EM_RAW_GUEST_TRAP)
7565	{
7566	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> guest trap\n", pVmcb->guest.u64DR6));
7567	if (CPUMIsHyperDebugStateActive(pVCpu))
7568	CPUMSetGuestDR6(pVCpu, CPUMGetGuestDR6(pVCpu) \| pVmcb->guest.u64DR6);
7569
7570	/* Reflect the exception back to the guest. */
7571	hmR0SvmSetPendingXcptDB(pVCpu);
7572	rc = VINF_SUCCESS;
7573	}
7574
7575	/*
7576	* Update DR6.
7577	*/
7578	if (CPUMIsHyperDebugStateActive(pVCpu))
7579	{
7580	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> %Rrc\n", pVmcb->guest.u64DR6, rc));
7581	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
7582	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
7583	}
7584	else
7585	{
7586	AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc));
7587	Assert(!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu));
7588	}
7589
7590	return rc;
7591	}
7592
7593
7594	/**
7595	* \#VMEXIT handler for alignment check exceptions (SVM_EXIT_XCPT_17).
7596	* Conditional \#VMEXIT.
7597	*/
7598	HMSVM_EXIT_DECL hmR0SvmExitXcptAC(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7599	{
7600	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7601	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7602
7603	SVMEVENT Event;
7604	Event.u = 0;
7605	Event.n.u1Valid = 1;
7606	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7607	Event.n.u8Vector = X86_XCPT_AC;
7608	Event.n.u1ErrorCodeValid = 1;
7609	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7610	return VINF_SUCCESS;
7611	}
7612
7613
7614	/**
7615	* \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_XCPT_3).
7616	* Conditional \#VMEXIT.
7617	*/
7618	HMSVM_EXIT_DECL hmR0SvmExitXcptBP(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7619	{
7620	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7621	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, HMSVM_CPUMCTX_EXTRN_ALL);
7622	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7623
7624	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
7625	int rc = DBGFRZTrap03Handler(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
7626	if (rc == VINF_EM_RAW_GUEST_TRAP)
7627	{
7628	SVMEVENT Event;
7629	Event.u = 0;
7630	Event.n.u1Valid = 1;
7631	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7632	Event.n.u8Vector = X86_XCPT_BP;
7633	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7634	}
7635
7636	Assert(rc == VINF_SUCCESS \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_EM_DBG_BREAKPOINT);
7637	return rc;
7638	}
7639
7640
7641	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(VBOX_WITH_NESTED_HWVIRT_SVM)
7642	/**
7643	* \#VMEXIT handler for generic exceptions. Conditional \#VMEXIT.
7644	*/
7645	HMSVM_EXIT_DECL hmR0SvmExitXcptGeneric(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7646	{
7647	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7648	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7649
7650	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7651	uint8_t const uVector = pVmcb->ctrl.u64ExitCode - SVM_EXIT_XCPT_0;
7652	uint32_t const uErrCode = pVmcb->ctrl.u64ExitInfo1;
7653	Assert(pSvmTransient->u64ExitCode == pVmcb->ctrl.u64ExitCode);
7654	Assert(uVector <= X86_XCPT_LAST);
7655	Log4Func(("uVector=%#x uErrCode=%u\n", uVector, uErrCode));
7656
7657	SVMEVENT Event;
7658	Event.u = 0;
7659	Event.n.u1Valid = 1;
7660	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7661	Event.n.u8Vector = uVector;
7662	switch (uVector)
7663	{
7664	/* Shouldn't be here for reflecting #PFs (among other things, the fault address isn't passed along). */
7665	case X86_XCPT_PF: AssertMsgFailed(("hmR0SvmExitXcptGeneric: Unexpected exception")); return VERR_SVM_IPE_5;
7666	case X86_XCPT_DF:
7667	case X86_XCPT_TS:
7668	case X86_XCPT_NP:
7669	case X86_XCPT_SS:
7670	case X86_XCPT_GP:
7671	case X86_XCPT_AC:
7672	{
7673	Event.n.u1ErrorCodeValid = 1;
7674	Event.n.u32ErrorCode = uErrCode;
7675	break;
7676	}
7677	}
7678
7679	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7680	return VINF_SUCCESS;
7681	}
7682	#endif
7683
7684	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
7685	/**
7686	* \#VMEXIT handler for CLGI (SVM_EXIT_CLGI). Conditional \#VMEXIT.
7687	*/
7688	HMSVM_EXIT_DECL hmR0SvmExitClgi(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7689	{
7690	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7691	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_HWVIRT);
7692
7693	#ifdef VBOX_STRICT
7694	PCSVMVMCB pVmcbTmp = hmR0SvmGetCurrentVmcb(pVCpu);
7695	Assert(pVmcbTmp);
7696	Assert(!pVmcbTmp->ctrl.IntCtrl.n.u1VGifEnable);
7697	RT_NOREF(pVmcbTmp);
7698	#endif
7699
7700	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, 3);
7701	VBOXSTRICTRC rcStrict = IEMExecDecodedClgi(pVCpu, cbInstr);
7702	if (rcStrict == VINF_SUCCESS)
7703	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_HWVIRT);
7704	return VBOXSTRICTRC_VAL(rcStrict);
7705	}
7706
7707
7708	/**
7709	* \#VMEXIT handler for STGI (SVM_EXIT_STGI). Conditional \#VMEXIT.
7710	*/
7711	HMSVM_EXIT_DECL hmR0SvmExitStgi(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7712	{
7713	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7714	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK \| CPUMCTX_EXTRN_HWVIRT);
7715
7716	/*
7717	* When VGIF is not used we always intercept STGI instructions. When VGIF is used,
7718	* we only intercept STGI when events are pending for GIF to become 1.
7719	*/
7720	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7721	if (pVmcb->ctrl.IntCtrl.n.u1VGifEnable)
7722	hmR0SvmClearCtrlIntercept(pVCpu, pVmcb, SVM_CTRL_INTERCEPT_STGI);
7723
7724	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, 3);
7725	VBOXSTRICTRC rcStrict = IEMExecDecodedStgi(pVCpu, cbInstr);
7726	if (rcStrict == VINF_SUCCESS)
7727	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_HWVIRT);
7728	return VBOXSTRICTRC_VAL(rcStrict);
7729	}
7730
7731
7732	/**
7733	* \#VMEXIT handler for VMLOAD (SVM_EXIT_VMLOAD). Conditional \#VMEXIT.
7734	*/
7735	HMSVM_EXIT_DECL hmR0SvmExitVmload(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7736	{
7737	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7738	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK
7739	\| CPUMCTX_EXTRN_FS \| CPUMCTX_EXTRN_GS \| CPUMCTX_EXTRN_TR
7740	\| CPUMCTX_EXTRN_LDTR \| CPUMCTX_EXTRN_KERNEL_GS_BASE \| CPUMCTX_EXTRN_SYSCALL_MSRS
7741	\| CPUMCTX_EXTRN_SYSENTER_MSRS);
7742
7743	#ifdef VBOX_STRICT
7744	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7745	Assert(pVmcb);
7746	Assert(!pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload);
7747	RT_NOREF(pVmcb);
7748	#endif
7749
7750	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, 3);
7751	VBOXSTRICTRC rcStrict = IEMExecDecodedVmload(pVCpu, cbInstr);
7752	if (rcStrict == VINF_SUCCESS)
7753	{
7754	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_GUEST_FS \| HM_CHANGED_GUEST_GS
7755	\| HM_CHANGED_GUEST_TR \| HM_CHANGED_GUEST_LDTR
7756	\| HM_CHANGED_GUEST_KERNEL_GS_BASE \| HM_CHANGED_GUEST_SYSCALL_MSRS
7757	\| HM_CHANGED_GUEST_SYSENTER_MSR_MASK);
7758	}
7759	return VBOXSTRICTRC_VAL(rcStrict);
7760	}
7761
7762
7763	/**
7764	* \#VMEXIT handler for VMSAVE (SVM_EXIT_VMSAVE). Conditional \#VMEXIT.
7765	*/
7766	HMSVM_EXIT_DECL hmR0SvmExitVmsave(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7767	{
7768	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7769	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
7770
7771	#ifdef VBOX_STRICT
7772	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu);
7773	Assert(pVmcb);
7774	Assert(!pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload);
7775	RT_NOREF(pVmcb);
7776	#endif
7777
7778	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, 3);
7779	VBOXSTRICTRC rcStrict = IEMExecDecodedVmsave(pVCpu, cbInstr);
7780	return VBOXSTRICTRC_VAL(rcStrict);
7781	}
7782
7783
7784	/**
7785	* \#VMEXIT handler for INVLPGA (SVM_EXIT_INVLPGA). Conditional \#VMEXIT.
7786	*/
7787	HMSVM_EXIT_DECL hmR0SvmExitInvlpga(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7788	{
7789	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7790	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
7791
7792	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, 3);
7793	VBOXSTRICTRC rcStrict = IEMExecDecodedInvlpga(pVCpu, cbInstr);
7794	return VBOXSTRICTRC_VAL(rcStrict);
7795	}
7796
7797
7798	/**
7799	* \#VMEXIT handler for STGI (SVM_EXIT_VMRUN). Conditional \#VMEXIT.
7800	*/
7801	HMSVM_EXIT_DECL hmR0SvmExitVmrun(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7802	{
7803	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7804	HMSVM_CPUMCTX_IMPORT_STATE(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK \| IEM_CPUMCTX_EXTRN_SVM_VMRUN_MASK);
7805	VBOXSTRICTRC rcStrict;
7806	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, 3);
7807	rcStrict = IEMExecDecodedVmrun(pVCpu, cbInstr);
7808	Log4Func(("IEMExecDecodedVmrun returns %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
7809	if (rcStrict == VINF_SUCCESS)
7810	{
7811	rcStrict = VINF_SVM_VMRUN;
7812	ASMAtomicUoOrU64(&pVCpu->hm.s.fCtxChanged, HM_CHANGED_SVM_VMRUN_MASK);
7813	}
7814	return VBOXSTRICTRC_VAL(rcStrict);
7815	}
7816
7817
7818	/**
7819	* Nested-guest \#VMEXIT handler for debug exceptions (SVM_EXIT_XCPT_1).
7820	* Unconditional \#VMEXIT.
7821	*/
7822	HMSVM_EXIT_DECL hmR0SvmNestedExitXcptDB(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7823	{
7824	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7825	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7826
7827	if (pVCpu->hm.s.Event.fPending)
7828	{
7829	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
7830	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7831	}
7832
7833	hmR0SvmSetPendingXcptDB(pVCpu);
7834	return VINF_SUCCESS;
7835	}
7836
7837
7838	/**
7839	* Nested-guest \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_XCPT_3).
7840	* Conditional \#VMEXIT.
7841	*/
7842	HMSVM_EXIT_DECL hmR0SvmNestedExitXcptBP(PVMCPU pVCpu, PSVMTRANSIENT pSvmTransient)
7843	{
7844	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS(pVCpu, pSvmTransient);
7845	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY(pVCpu, pSvmTransient);
7846
7847	SVMEVENT Event;
7848	Event.u = 0;
7849	Event.n.u1Valid = 1;
7850	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7851	Event.n.u8Vector = X86_XCPT_BP;
7852	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7853	return VINF_SUCCESS;
7854	}
7855	#endif /* VBOX_WITH_NESTED_HWVIRT_SVM */
7856
7857	/** @} */
7858

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source: vbox/trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp@ 72969

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