HMSVMR0.cpp@ 72066

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1	/* $Id: HMSVMR0.cpp 72066 2018-04-30 06:34:05Z 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	#define HMSVM_USE_IEM_EVENT_REFLECTION
40	#ifdef DEBUG_ramshankar
41	# define HMSVM_SYNC_FULL_GUEST_STATE
42	# define HMSVM_SYNC_FULL_NESTED_GUEST_STATE
43	# define HMSVM_ALWAYS_TRAP_ALL_XCPTS
44	# define HMSVM_ALWAYS_TRAP_PF
45	# define HMSVM_ALWAYS_TRAP_TASK_SWITCH
46	#endif
47
48
49	/*********************************************************************************************************************************
50	* Defined Constants And Macros *
51	*********************************************************************************************************************************/
52	#ifdef VBOX_WITH_STATISTICS
53	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
54	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
55	if ((u64ExitCode) == SVM_EXIT_NPF) \
56	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf); \
57	else \
58	STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
59	} while (0)
60
61	# ifdef VBOX_WITH_NESTED_HWVIRT
62	# define HMSVM_NESTED_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
63	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
64	if ((u64ExitCode) == SVM_EXIT_NPF) \
65	STAM_COUNTER_INC(&pVCpu->hm.s.StatNestedExitReasonNpf); \
66	else \
67	STAM_COUNTER_INC(&pVCpu->hm.s.paStatNestedExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
68	} while (0)
69	# endif
70	#else
71	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
72	# ifdef VBOX_WITH_NESTED_HWVIRT
73	# define HMSVM_NESTED_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
74	# endif
75	#endif /* !VBOX_WITH_STATISTICS */
76
77
78	/** If we decide to use a function table approach this can be useful to
79	* switch to a "static DECLCALLBACK(int)". */
80	#define HMSVM_EXIT_DECL static int
81
82	/** Macro for checking and returning from the using function for
83	* \#VMEXIT intercepts that maybe caused during delivering of another
84	* event in the guest. */
85	#ifdef VBOX_WITH_NESTED_HWVIRT
86	# define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
87	do \
88	{ \
89	int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
90	if (RT_LIKELY(rc == VINF_SUCCESS)) { /* continue #VMEXIT handling */ } \
91	else if ( rc == VINF_HM_DOUBLE_FAULT) { return VINF_SUCCESS; } \
92	else if ( rc == VINF_EM_RESET \
93	&& HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_SHUTDOWN)) \
94	return VBOXSTRICTRC_TODO(IEMExecSvmVmexit(pVCpu, SVM_EXIT_SHUTDOWN, 0, 0)); \
95	else \
96	return rc; \
97	} while (0)
98	#else
99	# define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
100	do \
101	{ \
102	int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
103	if (RT_LIKELY(rc == VINF_SUCCESS)) { /* continue #VMEXIT handling */ } \
104	else if ( rc == VINF_HM_DOUBLE_FAULT) { return VINF_SUCCESS; } \
105	else \
106	return rc; \
107	} while (0)
108	#endif
109
110	/**
111	* Updates interrupt shadow for the current RIP.
112	*/
113	#define HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx) \
114	do { \
115	/* Update interrupt shadow. */ \
116	if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS) \
117	&& pCtx->rip != EMGetInhibitInterruptsPC(pVCpu)) \
118	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS); \
119	} while (0)
120
121	/** Macro for upgrading a @a a_rc to VINF_EM_DBG_STEPPED after emulating an
122	* instruction that exited. */
123	#define HMSVM_CHECK_SINGLE_STEP(a_pVCpu, a_rc) \
124	do { \
125	if ((a_pVCpu)->hm.s.fSingleInstruction && (a_rc) == VINF_SUCCESS) \
126	(a_rc) = VINF_EM_DBG_STEPPED; \
127	} while (0)
128
129	/** Assert that preemption is disabled or covered by thread-context hooks. */
130	#define HMSVM_ASSERT_PREEMPT_SAFE() Assert( VMMR0ThreadCtxHookIsEnabled(pVCpu) \
131	\|\| !RTThreadPreemptIsEnabled(NIL_RTTHREAD));
132
133	/** Assert that we haven't migrated CPUs when thread-context hooks are not
134	* used. */
135	#define HMSVM_ASSERT_CPU_SAFE() AssertMsg( VMMR0ThreadCtxHookIsEnabled(pVCpu) \
136	\|\| pVCpu->hm.s.idEnteredCpu == RTMpCpuId(), \
137	("Illegal migration! Entered on CPU %u Current %u\n", \
138	pVCpu->hm.s.idEnteredCpu, RTMpCpuId()));
139
140	/** Assert that we're not executing a nested-guest. */
141	#ifdef VBOX_WITH_NESTED_HWVIRT
142	# define HMSVM_ASSERT_NOT_IN_NESTED_GUEST(a_pCtx) Assert(!CPUMIsGuestInSvmNestedHwVirtMode((a_pCtx)))
143	#else
144	# define HMSVM_ASSERT_NOT_IN_NESTED_GUEST(a_pCtx) do { NOREF((a_pCtx)); } while (0)
145	#endif
146
147	/** Assert that we're executing a nested-guest. */
148	#ifdef VBOX_WITH_NESTED_HWVIRT
149	# define HMSVM_ASSERT_IN_NESTED_GUEST(a_pCtx) Assert(CPUMIsGuestInSvmNestedHwVirtMode((a_pCtx)))
150	#else
151	# define HMSVM_ASSERT_IN_NESTED_GUEST(a_pCtx) do { NOREF((a_pCtx)); } while (0)
152	#endif
153
154	/** Validate segment descriptor granularity bit. */
155	#ifdef VBOX_STRICT
156	# define HMSVM_ASSERT_SEG_GRANULARITY(reg) \
157	AssertMsg( !pMixedCtx->reg.Attr.n.u1Present \
158	\|\| ( pMixedCtx->reg.Attr.n.u1Granularity \
159	? (pMixedCtx->reg.u32Limit & 0xfff) == 0xfff \
160	: pMixedCtx->reg.u32Limit <= UINT32_C(0xfffff)), \
161	("Invalid Segment Attributes Limit=%#RX32 Attr=%#RX32 Base=%#RX64\n", pMixedCtx->reg.u32Limit, \
162	pMixedCtx->reg.Attr.u, pMixedCtx->reg.u64Base))
163	#else
164	# define HMSVM_ASSERT_SEG_GRANULARITY(reg) do { } while (0)
165	#endif
166
167	/**
168	* Exception bitmap mask for all contributory exceptions.
169	*
170	* Page fault is deliberately excluded here as it's conditional as to whether
171	* it's contributory or benign. Page faults are handled separately.
172	*/
173	#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) \
174	\| RT_BIT(X86_XCPT_DE))
175
176	/**
177	* Mandatory/unconditional guest control intercepts.
178	*
179	* SMIs can and do happen in normal operation. We need not intercept them
180	* while executing the guest (or nested-guest).
181	*/
182	#define HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS ( SVM_CTRL_INTERCEPT_INTR \
183	\| SVM_CTRL_INTERCEPT_NMI \
184	\| SVM_CTRL_INTERCEPT_INIT \
185	\| SVM_CTRL_INTERCEPT_RDPMC \
186	\| SVM_CTRL_INTERCEPT_CPUID \
187	\| SVM_CTRL_INTERCEPT_RSM \
188	\| SVM_CTRL_INTERCEPT_HLT \
189	\| SVM_CTRL_INTERCEPT_IOIO_PROT \
190	\| SVM_CTRL_INTERCEPT_MSR_PROT \
191	\| SVM_CTRL_INTERCEPT_INVLPGA \
192	\| SVM_CTRL_INTERCEPT_SHUTDOWN \
193	\| SVM_CTRL_INTERCEPT_FERR_FREEZE \
194	\| SVM_CTRL_INTERCEPT_VMRUN \
195	\| SVM_CTRL_INTERCEPT_SKINIT \
196	\| SVM_CTRL_INTERCEPT_WBINVD \
197	\| SVM_CTRL_INTERCEPT_MONITOR \
198	\| SVM_CTRL_INTERCEPT_MWAIT \
199	\| SVM_CTRL_INTERCEPT_CR0_SEL_WRITE \
200	\| SVM_CTRL_INTERCEPT_XSETBV)
201
202	/** @name VMCB Clean Bits.
203	*
204	* These flags are used for VMCB-state caching. A set VMCB Clean bit indicates
205	* AMD-V doesn't need to reload the corresponding value(s) from the VMCB in
206	* memory.
207	*
208	* @{ */
209	/** All intercepts vectors, TSC offset, PAUSE filter counter. */
210	#define HMSVM_VMCB_CLEAN_INTERCEPTS RT_BIT(0)
211	/** I/O permission bitmap, MSR permission bitmap. */
212	#define HMSVM_VMCB_CLEAN_IOPM_MSRPM RT_BIT(1)
213	/** ASID. */
214	#define HMSVM_VMCB_CLEAN_ASID RT_BIT(2)
215	/** TRP: V_TPR, V_IRQ, V_INTR_PRIO, V_IGN_TPR, V_INTR_MASKING,
216	V_INTR_VECTOR. */
217	#define HMSVM_VMCB_CLEAN_INT_CTRL RT_BIT(3)
218	/** Nested Paging: Nested CR3 (nCR3), PAT. */
219	#define HMSVM_VMCB_CLEAN_NP RT_BIT(4)
220	/** Control registers (CR0, CR3, CR4, EFER). */
221	#define HMSVM_VMCB_CLEAN_CRX_EFER RT_BIT(5)
222	/** Debug registers (DR6, DR7). */
223	#define HMSVM_VMCB_CLEAN_DRX RT_BIT(6)
224	/** GDT, IDT limit and base. */
225	#define HMSVM_VMCB_CLEAN_DT RT_BIT(7)
226	/** Segment register: CS, SS, DS, ES limit and base. */
227	#define HMSVM_VMCB_CLEAN_SEG RT_BIT(8)
228	/** CR2.*/
229	#define HMSVM_VMCB_CLEAN_CR2 RT_BIT(9)
230	/** Last-branch record (DbgCtlMsr, br_from, br_to, lastint_from, lastint_to) */
231	#define HMSVM_VMCB_CLEAN_LBR RT_BIT(10)
232	/** AVIC (AVIC APIC_BAR; AVIC APIC_BACKING_PAGE, AVIC
233	PHYSICAL_TABLE and AVIC LOGICAL_TABLE Pointers). */
234	#define HMSVM_VMCB_CLEAN_AVIC RT_BIT(11)
235	/** Mask of all valid VMCB Clean bits. */
236	#define HMSVM_VMCB_CLEAN_ALL ( HMSVM_VMCB_CLEAN_INTERCEPTS \
237	\| HMSVM_VMCB_CLEAN_IOPM_MSRPM \
238	\| HMSVM_VMCB_CLEAN_ASID \
239	\| HMSVM_VMCB_CLEAN_INT_CTRL \
240	\| HMSVM_VMCB_CLEAN_NP \
241	\| HMSVM_VMCB_CLEAN_CRX_EFER \
242	\| HMSVM_VMCB_CLEAN_DRX \
243	\| HMSVM_VMCB_CLEAN_DT \
244	\| HMSVM_VMCB_CLEAN_SEG \
245	\| HMSVM_VMCB_CLEAN_CR2 \
246	\| HMSVM_VMCB_CLEAN_LBR \
247	\| HMSVM_VMCB_CLEAN_AVIC)
248	/** @} */
249
250	/** @name SVM transient.
251	*
252	* A state structure for holding miscellaneous information across AMD-V
253	* VMRUN/\#VMEXIT operation, restored after the transition.
254	*
255	* @{ */
256	typedef struct SVMTRANSIENT
257	{
258	/** The host's rflags/eflags. */
259	RTCCUINTREG fEFlags;
260	#if HC_ARCH_BITS == 32
261	uint32_t u32Alignment0;
262	#endif
263
264	/** The \#VMEXIT exit code (the EXITCODE field in the VMCB). */
265	uint64_t u64ExitCode;
266	/** The guest's TPR value used for TPR shadowing. */
267	uint8_t u8GuestTpr;
268	/** Alignment. */
269	uint8_t abAlignment0[7];
270
271	/** Pointer to the currently executing VMCB. */
272	PSVMVMCB pVmcb;
273	/** Whether we are currently executing a nested-guest. */
274	bool fIsNestedGuest;
275
276	/** Whether the guest debug state was active at the time of \#VMEXIT. */
277	bool fWasGuestDebugStateActive;
278	/** Whether the hyper debug state was active at the time of \#VMEXIT. */
279	bool fWasHyperDebugStateActive;
280	/** Whether the TSC offset mode needs to be updated. */
281	bool fUpdateTscOffsetting;
282	/** Whether the TSC_AUX MSR needs restoring on \#VMEXIT. */
283	bool fRestoreTscAuxMsr;
284	/** Whether the \#VMEXIT was caused by a page-fault during delivery of a
285	* contributary exception or a page-fault. */
286	bool fVectoringDoublePF;
287	/** Whether the \#VMEXIT was caused by a page-fault during delivery of an
288	* external interrupt or NMI. */
289	bool fVectoringPF;
290	} SVMTRANSIENT, *PSVMTRANSIENT;
291	AssertCompileMemberAlignment(SVMTRANSIENT, u64ExitCode, sizeof(uint64_t));
292	AssertCompileMemberAlignment(SVMTRANSIENT, pVmcb, sizeof(uint64_t));
293	/** @} */
294
295	/**
296	* MSRPM (MSR permission bitmap) read permissions (for guest RDMSR).
297	*/
298	typedef enum SVMMSREXITREAD
299	{
300	/** Reading this MSR causes a \#VMEXIT. */
301	SVMMSREXIT_INTERCEPT_READ = 0xb,
302	/** Reading this MSR does not cause a \#VMEXIT. */
303	SVMMSREXIT_PASSTHRU_READ
304	} SVMMSREXITREAD;
305
306	/**
307	* MSRPM (MSR permission bitmap) write permissions (for guest WRMSR).
308	*/
309	typedef enum SVMMSREXITWRITE
310	{
311	/** Writing to this MSR causes a \#VMEXIT. */
312	SVMMSREXIT_INTERCEPT_WRITE = 0xd,
313	/** Writing to this MSR does not cause a \#VMEXIT. */
314	SVMMSREXIT_PASSTHRU_WRITE
315	} SVMMSREXITWRITE;
316
317	/**
318	* SVM \#VMEXIT handler.
319	*
320	* @returns VBox status code.
321	* @param pVCpu The cross context virtual CPU structure.
322	* @param pMixedCtx Pointer to the guest-CPU context.
323	* @param pSvmTransient Pointer to the SVM-transient structure.
324	*/
325	typedef int FNSVMEXITHANDLER(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
326
327
328	/*********************************************************************************************************************************
329	* Internal Functions *
330	*********************************************************************************************************************************/
331	static void hmR0SvmSetMsrPermission(PCPUMCTX pCtx, uint8_t *pbMsrBitmap, unsigned uMsr, SVMMSREXITREAD enmRead,
332	SVMMSREXITWRITE enmWrite);
333	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu);
334	static void hmR0SvmLeave(PVMCPU pVCpu);
335
336	/** @name \#VMEXIT handlers.
337	* @{
338	*/
339	static FNSVMEXITHANDLER hmR0SvmExitIntr;
340	static FNSVMEXITHANDLER hmR0SvmExitWbinvd;
341	static FNSVMEXITHANDLER hmR0SvmExitInvd;
342	static FNSVMEXITHANDLER hmR0SvmExitCpuid;
343	static FNSVMEXITHANDLER hmR0SvmExitRdtsc;
344	static FNSVMEXITHANDLER hmR0SvmExitRdtscp;
345	static FNSVMEXITHANDLER hmR0SvmExitRdpmc;
346	static FNSVMEXITHANDLER hmR0SvmExitInvlpg;
347	static FNSVMEXITHANDLER hmR0SvmExitHlt;
348	static FNSVMEXITHANDLER hmR0SvmExitMonitor;
349	static FNSVMEXITHANDLER hmR0SvmExitMwait;
350	static FNSVMEXITHANDLER hmR0SvmExitShutdown;
351	static FNSVMEXITHANDLER hmR0SvmExitUnexpected;
352	static FNSVMEXITHANDLER hmR0SvmExitReadCRx;
353	static FNSVMEXITHANDLER hmR0SvmExitWriteCRx;
354	static FNSVMEXITHANDLER hmR0SvmExitMsr;
355	static FNSVMEXITHANDLER hmR0SvmExitReadDRx;
356	static FNSVMEXITHANDLER hmR0SvmExitWriteDRx;
357	static FNSVMEXITHANDLER hmR0SvmExitXsetbv;
358	static FNSVMEXITHANDLER hmR0SvmExitIOInstr;
359	static FNSVMEXITHANDLER hmR0SvmExitNestedPF;
360	static FNSVMEXITHANDLER hmR0SvmExitVIntr;
361	static FNSVMEXITHANDLER hmR0SvmExitTaskSwitch;
362	static FNSVMEXITHANDLER hmR0SvmExitVmmCall;
363	static FNSVMEXITHANDLER hmR0SvmExitPause;
364	static FNSVMEXITHANDLER hmR0SvmExitFerrFreeze;
365	static FNSVMEXITHANDLER hmR0SvmExitIret;
366	static FNSVMEXITHANDLER hmR0SvmExitXcptPF;
367	static FNSVMEXITHANDLER hmR0SvmExitXcptUD;
368	static FNSVMEXITHANDLER hmR0SvmExitXcptMF;
369	static FNSVMEXITHANDLER hmR0SvmExitXcptDB;
370	static FNSVMEXITHANDLER hmR0SvmExitXcptAC;
371	static FNSVMEXITHANDLER hmR0SvmExitXcptBP;
372	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(VBOX_WITH_NESTED_HWVIRT)
373	static FNSVMEXITHANDLER hmR0SvmExitXcptGeneric;
374	#endif
375	#ifdef VBOX_WITH_NESTED_HWVIRT
376	static FNSVMEXITHANDLER hmR0SvmExitXcptPFNested;
377	static FNSVMEXITHANDLER hmR0SvmExitClgi;
378	static FNSVMEXITHANDLER hmR0SvmExitStgi;
379	static FNSVMEXITHANDLER hmR0SvmExitVmload;
380	static FNSVMEXITHANDLER hmR0SvmExitVmsave;
381	static FNSVMEXITHANDLER hmR0SvmExitInvlpga;
382	static FNSVMEXITHANDLER hmR0SvmExitVmrun;
383	static FNSVMEXITHANDLER hmR0SvmNestedExitXcptDB;
384	static FNSVMEXITHANDLER hmR0SvmNestedExitXcptBP;
385	#endif
386	/** @} */
387
388	static int hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient);
389	#ifdef VBOX_WITH_NESTED_HWVIRT
390	static int hmR0SvmHandleExitNested(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
391	#endif
392
393
394	/*********************************************************************************************************************************
395	* Global Variables *
396	*********************************************************************************************************************************/
397	/** Ring-0 memory object for the IO bitmap. */
398	static RTR0MEMOBJ g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
399	/** Physical address of the IO bitmap. */
400	static RTHCPHYS g_HCPhysIOBitmap;
401	/** Pointer to the IO bitmap. */
402	static R0PTRTYPE(void *) g_pvIOBitmap;
403
404	#ifdef VBOX_STRICT
405	# define HMSVM_LOG_CS RT_BIT_32(0)
406	# define HMSVM_LOG_SS RT_BIT_32(1)
407	# define HMSVM_LOG_FS RT_BIT_32(2)
408	# define HMSVM_LOG_GS RT_BIT_32(3)
409	# define HMSVM_LOG_LBR RT_BIT_32(4)
410	# define HMSVM_LOG_ALL ( HMSVM_LOG_CS \
411	\| HMSVM_LOG_SS \
412	\| HMSVM_LOG_FS \
413	\| HMSVM_LOG_GS \
414	\| HMSVM_LOG_LBR)
415
416	/**
417	* Dumps virtual CPU state and additional info. to the logger for diagnostics.
418	*
419	* @param pVCpu The cross context virtual CPU structure.
420	* @param pVmcb Pointer to the VM control block.
421	* @param pCtx Pointer to the guest-CPU context.
422	* @param pszPrefix Log prefix.
423	* @param fFlags Log flags, see HMSVM_LOG_XXX.
424	* @param uVerbose The verbosity level, currently unused.
425	*/
426	static void hmR0SvmLogState(PVMCPU pVCpu, PCSVMVMCB pVmcb, PCPUMCTX pCtx, const char *pszPrefix, uint32_t fFlags,
427	uint8_t uVerbose)
428	{
429	RT_NOREF2(pVCpu, uVerbose);
430
431	Log4(("%s: cs:rip=%04x:%RX64 efl=%#RX64 cr0=%#RX64 cr3=%#RX64 cr4=%#RX64\n", pszPrefix, pCtx->cs.Sel, pCtx->rip,
432	pCtx->rflags.u, pCtx->cr0, pCtx->cr3, pCtx->cr4));
433	Log4(("%s: rsp=%#RX64 rbp=%#RX64 rdi=%#RX64\n", pszPrefix, pCtx->rsp, pCtx->rbp, pCtx->rdi));
434	if (fFlags & HMSVM_LOG_CS)
435	{
436	Log4(("%s: cs={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->cs.Sel, pCtx->cs.u64Base,
437	pCtx->cs.u32Limit, pCtx->cs.Attr.u));
438	}
439	if (fFlags & HMSVM_LOG_SS)
440	{
441	Log4(("%s: ss={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->ss.Sel, pCtx->ss.u64Base,
442	pCtx->ss.u32Limit, pCtx->ss.Attr.u));
443	}
444	if (fFlags & HMSVM_LOG_FS)
445	{
446	Log4(("%s: fs={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->fs.Sel, pCtx->fs.u64Base,
447	pCtx->fs.u32Limit, pCtx->fs.Attr.u));
448	}
449	if (fFlags & HMSVM_LOG_GS)
450	{
451	Log4(("%s: gs={%04x base=%016RX64 limit=%08x flags=%08x}\n", pszPrefix, pCtx->gs.Sel, pCtx->gs.u64Base,
452	pCtx->gs.u32Limit, pCtx->gs.Attr.u));
453	}
454
455	PCSVMVMCBSTATESAVE pVmcbGuest = &pVmcb->guest;
456	if (fFlags & HMSVM_LOG_LBR)
457	{
458	Log4(("%s: br_from=%#RX64 br_to=%#RX64 lastxcpt_from=%#RX64 lastxcpt_to=%#RX64\n", pszPrefix, pVmcbGuest->u64BR_FROM,
459	pVmcbGuest->u64BR_TO, pVmcbGuest->u64LASTEXCPFROM, pVmcbGuest->u64LASTEXCPTO));
460	}
461	NOREF(pVmcbGuest);
462	}
463	#endif /* VBOX_STRICT */
464
465
466	/**
467	* Sets up and activates AMD-V on the current CPU.
468	*
469	* @returns VBox status code.
470	* @param pCpu Pointer to the CPU info struct.
471	* @param pVM The cross context VM structure. Can be
472	* NULL after a resume!
473	* @param pvCpuPage Pointer to the global CPU page.
474	* @param HCPhysCpuPage Physical address of the global CPU page.
475	* @param fEnabledByHost Whether the host OS has already initialized AMD-V.
476	* @param pvArg Unused on AMD-V.
477	*/
478	VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBALCPUINFO pCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
479	void *pvArg)
480	{
481	Assert(!fEnabledByHost);
482	Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
483	Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
484	Assert(pvCpuPage); NOREF(pvCpuPage);
485	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
486
487	NOREF(pvArg);
488	NOREF(fEnabledByHost);
489
490	/* Paranoid: Disable interrupt as, in theory, interrupt handlers might mess with EFER. */
491	RTCCUINTREG fEFlags = ASMIntDisableFlags();
492
493	/*
494	* We must turn on AMD-V and setup the host state physical address, as those MSRs are per CPU.
495	*/
496	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
497	if (u64HostEfer & MSR_K6_EFER_SVME)
498	{
499	/* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE is active, then we blindly use AMD-V. */
500	if ( pVM
501	&& pVM->hm.s.svm.fIgnoreInUseError)
502	{
503	pCpu->fIgnoreAMDVInUseError = true;
504	}
505
506	if (!pCpu->fIgnoreAMDVInUseError)
507	{
508	ASMSetFlags(fEFlags);
509	return VERR_SVM_IN_USE;
510	}
511	}
512
513	/* Turn on AMD-V in the EFER MSR. */
514	ASMWrMsr(MSR_K6_EFER, u64HostEfer \| MSR_K6_EFER_SVME);
515
516	/* Write the physical page address where the CPU will store the host state while executing the VM. */
517	ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
518
519	/* Restore interrupts. */
520	ASMSetFlags(fEFlags);
521
522	/*
523	* Theoretically, other hypervisors may have used ASIDs, ideally we should flush all non-zero ASIDs
524	* when enabling SVM. AMD doesn't have an SVM instruction to flush all ASIDs (flushing is done
525	* upon VMRUN). Therefore, flag that we need to flush the TLB entirely with before executing any
526	* guest code.
527	*/
528	pCpu->fFlushAsidBeforeUse = true;
529
530	/*
531	* Ensure each VCPU scheduled on this CPU gets a new ASID on resume. See @bugref{6255}.
532	*/
533	++pCpu->cTlbFlushes;
534
535	return VINF_SUCCESS;
536	}
537
538
539	/**
540	* Deactivates AMD-V on the current CPU.
541	*
542	* @returns VBox status code.
543	* @param pCpu Pointer to the CPU info struct.
544	* @param pvCpuPage Pointer to the global CPU page.
545	* @param HCPhysCpuPage Physical address of the global CPU page.
546	*/
547	VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBALCPUINFO pCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
548	{
549	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
550	AssertReturn( HCPhysCpuPage
551	&& HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
552	AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
553	NOREF(pCpu);
554
555	/* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with EFER. */
556	RTCCUINTREG fEFlags = ASMIntDisableFlags();
557
558	/* Turn off AMD-V in the EFER MSR. */
559	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
560	ASMWrMsr(MSR_K6_EFER, u64HostEfer & ~MSR_K6_EFER_SVME);
561
562	/* Invalidate host state physical address. */
563	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
564
565	/* Restore interrupts. */
566	ASMSetFlags(fEFlags);
567
568	return VINF_SUCCESS;
569	}
570
571
572	/**
573	* Does global AMD-V initialization (called during module initialization).
574	*
575	* @returns VBox status code.
576	*/
577	VMMR0DECL(int) SVMR0GlobalInit(void)
578	{
579	/*
580	* Allocate 12 KB (3 pages) for the IO bitmap. Since this is non-optional and we always
581	* intercept all IO accesses, it's done once globally here instead of per-VM.
582	*/
583	Assert(g_hMemObjIOBitmap == NIL_RTR0MEMOBJ);
584	int rc = RTR0MemObjAllocCont(&g_hMemObjIOBitmap, SVM_IOPM_PAGES << X86_PAGE_4K_SHIFT, false /* fExecutable */);
585	if (RT_FAILURE(rc))
586	return rc;
587
588	g_pvIOBitmap = RTR0MemObjAddress(g_hMemObjIOBitmap);
589	g_HCPhysIOBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjIOBitmap, 0 /* iPage */);
590
591	/* Set all bits to intercept all IO accesses. */
592	ASMMemFill32(g_pvIOBitmap, SVM_IOPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
593
594	return VINF_SUCCESS;
595	}
596
597
598	/**
599	* Does global AMD-V termination (called during module termination).
600	*/
601	VMMR0DECL(void) SVMR0GlobalTerm(void)
602	{
603	if (g_hMemObjIOBitmap != NIL_RTR0MEMOBJ)
604	{
605	RTR0MemObjFree(g_hMemObjIOBitmap, true /* fFreeMappings */);
606	g_pvIOBitmap = NULL;
607	g_HCPhysIOBitmap = 0;
608	g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
609	}
610	}
611
612
613	/**
614	* Frees any allocated per-VCPU structures for a VM.
615	*
616	* @param pVM The cross context VM structure.
617	*/
618	DECLINLINE(void) hmR0SvmFreeStructs(PVM pVM)
619	{
620	for (uint32_t i = 0; i < pVM->cCpus; i++)
621	{
622	PVMCPU pVCpu = &pVM->aCpus[i];
623	AssertPtr(pVCpu);
624
625	if (pVCpu->hm.s.svm.hMemObjVmcbHost != NIL_RTR0MEMOBJ)
626	{
627	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcbHost, false);
628	pVCpu->hm.s.svm.HCPhysVmcbHost = 0;
629	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
630	}
631
632	if (pVCpu->hm.s.svm.hMemObjVmcb != NIL_RTR0MEMOBJ)
633	{
634	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcb, false);
635	pVCpu->hm.s.svm.pVmcb = NULL;
636	pVCpu->hm.s.svm.HCPhysVmcb = 0;
637	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
638	}
639
640	if (pVCpu->hm.s.svm.hMemObjMsrBitmap != NIL_RTR0MEMOBJ)
641	{
642	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjMsrBitmap, false);
643	pVCpu->hm.s.svm.pvMsrBitmap = NULL;
644	pVCpu->hm.s.svm.HCPhysMsrBitmap = 0;
645	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
646	}
647	}
648	}
649
650
651	/**
652	* Does per-VM AMD-V initialization.
653	*
654	* @returns VBox status code.
655	* @param pVM The cross context VM structure.
656	*/
657	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
658	{
659	int rc = VERR_INTERNAL_ERROR_5;
660
661	/*
662	* Check for an AMD CPU erratum which requires us to flush the TLB before every world-switch.
663	*/
664	uint32_t u32Family;
665	uint32_t u32Model;
666	uint32_t u32Stepping;
667	if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping))
668	{
669	Log4(("SVMR0InitVM: AMD cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping));
670	pVM->hm.s.svm.fAlwaysFlushTLB = true;
671	}
672
673	/*
674	* Initialize the R0 memory objects up-front so we can properly cleanup on allocation failures.
675	*/
676	for (VMCPUID i = 0; i < pVM->cCpus; i++)
677	{
678	PVMCPU pVCpu = &pVM->aCpus[i];
679	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
680	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
681	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
682	}
683
684	for (VMCPUID i = 0; i < pVM->cCpus; i++)
685	{
686	PVMCPU pVCpu = &pVM->aCpus[i];
687
688	/*
689	* Allocate one page for the host-context VM control block (VMCB). This is used for additional host-state (such as
690	* FS, GS, Kernel GS Base, etc.) apart from the host-state save area specified in MSR_K8_VM_HSAVE_PA.
691	*/
692	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcbHost, SVM_VMCB_PAGES << PAGE_SHIFT, false /* fExecutable */);
693	if (RT_FAILURE(rc))
694	goto failure_cleanup;
695
696	void *pvVmcbHost = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcbHost);
697	pVCpu->hm.s.svm.HCPhysVmcbHost = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcbHost, 0 /* iPage */);
698	Assert(pVCpu->hm.s.svm.HCPhysVmcbHost < _4G);
699	ASMMemZeroPage(pvVmcbHost);
700
701	/*
702	* Allocate one page for the guest-state VMCB.
703	*/
704	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcb, SVM_VMCB_PAGES << PAGE_SHIFT, false /* fExecutable */);
705	if (RT_FAILURE(rc))
706	goto failure_cleanup;
707
708	pVCpu->hm.s.svm.pVmcb = (PSVMVMCB)RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcb);
709	pVCpu->hm.s.svm.HCPhysVmcb = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcb, 0 /* iPage */);
710	Assert(pVCpu->hm.s.svm.HCPhysVmcb < _4G);
711	ASMMemZeroPage(pVCpu->hm.s.svm.pVmcb);
712
713	/*
714	* Allocate two pages (8 KB) for the MSR permission bitmap. There doesn't seem to be a way to convince
715	* SVM to not require one.
716	*/
717	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT,
718	false /* fExecutable */);
719	if (RT_FAILURE(rc))
720	goto failure_cleanup;
721
722	pVCpu->hm.s.svm.pvMsrBitmap = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjMsrBitmap);
723	pVCpu->hm.s.svm.HCPhysMsrBitmap = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjMsrBitmap, 0 /* iPage */);
724	/* Set all bits to intercept all MSR accesses (changed later on). */
725	ASMMemFill32(pVCpu->hm.s.svm.pvMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
726	}
727
728	return VINF_SUCCESS;
729
730	failure_cleanup:
731	hmR0SvmFreeStructs(pVM);
732	return rc;
733	}
734
735
736	/**
737	* Does per-VM AMD-V termination.
738	*
739	* @returns VBox status code.
740	* @param pVM The cross context VM structure.
741	*/
742	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
743	{
744	hmR0SvmFreeStructs(pVM);
745	return VINF_SUCCESS;
746	}
747
748
749	/**
750	* Returns whether the VMCB Clean Bits feature is supported.
751	*
752	* @return @c true if supported, @c false otherwise.
753	* @param pVCpu The cross context virtual CPU structure.
754	* @param pCtx Pointer to the guest-CPU context.
755	*/
756	DECLINLINE(bool) hmR0SvmSupportsVmcbCleanBits(PVMCPU pVCpu, PCPUMCTX pCtx)
757	{
758	PVM pVM = pVCpu->CTX_SUFF(pVM);
759	#ifdef VBOX_WITH_NESTED_HWVIRT
760	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
761	{
762	return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN)
763	&& pVM->cpum.ro.GuestFeatures.fSvmVmcbClean;
764	}
765	#else
766	RT_NOREF(pCtx);
767	#endif
768	return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN);
769	}
770
771
772	/**
773	* Returns whether the decode assists feature is supported.
774	*
775	* @return @c true if supported, @c false otherwise.
776	* @param pVCpu The cross context virtual CPU structure.
777	* @param pCtx Pointer to the guest-CPU context.
778	*/
779	DECLINLINE(bool) hmR0SvmSupportsDecodeAssists(PVMCPU pVCpu, PCPUMCTX pCtx)
780	{
781	PVM pVM = pVCpu->CTX_SUFF(pVM);
782	#ifdef VBOX_WITH_NESTED_HWVIRT
783	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
784	{
785	return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_DECODE_ASSISTS)
786	&& pVM->cpum.ro.GuestFeatures.fSvmDecodeAssists;
787	}
788	#else
789	RT_NOREF(pCtx);
790	#endif
791	return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_DECODE_ASSISTS);
792	}
793
794
795	/**
796	* Returns whether the NRIP_SAVE feature is supported.
797	*
798	* @return @c true if supported, @c false otherwise.
799	* @param pVCpu The cross context virtual CPU structure.
800	* @param pCtx Pointer to the guest-CPU context.
801	*/
802	DECLINLINE(bool) hmR0SvmSupportsNextRipSave(PVMCPU pVCpu, PCPUMCTX pCtx)
803	{
804	PVM pVM = pVCpu->CTX_SUFF(pVM);
805	#ifdef VBOX_WITH_NESTED_HWVIRT
806	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
807	{
808	return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
809	&& pVM->cpum.ro.GuestFeatures.fSvmNextRipSave;
810	}
811	#else
812	RT_NOREF(pCtx);
813	#endif
814	return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_NRIP_SAVE);
815	}
816
817
818	/**
819	* Sets the permission bits for the specified MSR in the MSRPM bitmap.
820	*
821	* @param pCtx Pointer to the guest-CPU or nested-guest-CPU context.
822	* @param pbMsrBitmap Pointer to the MSR bitmap.
823	* @param idMsr The MSR for which the permissions are being set.
824	* @param enmRead MSR read permissions.
825	* @param enmWrite MSR write permissions.
826	*
827	* @remarks This function does -not- clear the VMCB clean bits for MSRPM. The
828	* caller needs to take care of this.
829	*/
830	static void hmR0SvmSetMsrPermission(PCPUMCTX pCtx, uint8_t *pbMsrBitmap, uint32_t idMsr, SVMMSREXITREAD enmRead,
831	SVMMSREXITWRITE enmWrite)
832	{
833	bool const fInNestedGuestMode = CPUMIsGuestInSvmNestedHwVirtMode(pCtx);
834	uint16_t offMsrpm;
835	uint8_t uMsrpmBit;
836	int rc = HMSvmGetMsrpmOffsetAndBit(idMsr, &offMsrpm, &uMsrpmBit);
837	AssertRC(rc);
838
839	Assert(uMsrpmBit == 0 \|\| uMsrpmBit == 2 \|\| uMsrpmBit == 4 \|\| uMsrpmBit == 6);
840	Assert(offMsrpm < SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
841
842	pbMsrBitmap += offMsrpm;
843	if (enmRead == SVMMSREXIT_INTERCEPT_READ)
844	*pbMsrBitmap \|= RT_BIT(uMsrpmBit);
845	else
846	{
847	if (!fInNestedGuestMode)
848	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit);
849	#ifdef VBOX_WITH_NESTED_HWVIRT
850	else
851	{
852	/* Only clear the bit if the nested-guest is also not intercepting the MSR read.*/
853	uint8_t const pbNstGstMsrBitmap = (uint8_t )pCtx->hwvirt.svm.CTX_SUFF(pvMsrBitmap);
854	pbNstGstMsrBitmap += offMsrpm;
855	if (!(*pbNstGstMsrBitmap & RT_BIT(uMsrpmBit)))
856	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit);
857	else
858	Assert(*pbMsrBitmap & RT_BIT(uMsrpmBit));
859	}
860	#endif
861	}
862
863	if (enmWrite == SVMMSREXIT_INTERCEPT_WRITE)
864	*pbMsrBitmap \|= RT_BIT(uMsrpmBit + 1);
865	else
866	{
867	if (!fInNestedGuestMode)
868	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit + 1);
869	#ifdef VBOX_WITH_NESTED_HWVIRT
870	else
871	{
872	/* Only clear the bit if the nested-guest is also not intercepting the MSR write.*/
873	uint8_t const pbNstGstMsrBitmap = (uint8_t )pCtx->hwvirt.svm.CTX_SUFF(pvMsrBitmap);
874	pbNstGstMsrBitmap += offMsrpm;
875	if (!(*pbNstGstMsrBitmap & RT_BIT(uMsrpmBit + 1)))
876	*pbMsrBitmap &= ~RT_BIT(uMsrpmBit + 1);
877	else
878	Assert(*pbMsrBitmap & RT_BIT(uMsrpmBit + 1));
879	}
880	#endif
881	}
882	}
883
884
885	/**
886	* Sets up AMD-V for the specified VM.
887	* This function is only called once per-VM during initalization.
888	*
889	* @returns VBox status code.
890	* @param pVM The cross context VM structure.
891	*/
892	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
893	{
894	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
895	AssertReturn(pVM, VERR_INVALID_PARAMETER);
896	Assert(pVM->hm.s.svm.fSupported);
897
898	bool const fPauseFilter = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER);
899	bool const fPauseFilterThreshold = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER_THRESHOLD);
900	bool const fUsePauseFilter = fPauseFilter && pVM->hm.s.svm.cPauseFilter;
901
902	bool const fLbrVirt = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_LBR_VIRT);
903	bool const fUseLbrVirt = fLbrVirt; /** @todo CFGM, IEM implementation etc. */
904
905	#ifdef VBOX_WITH_NESTED_HWVIRT
906	bool const fVirtVmsaveVmload = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VIRT_VMSAVE_VMLOAD);
907	bool const fUseVirtVmsaveVmload = fVirtVmsaveVmload && pVM->hm.s.svm.fVirtVmsaveVmload && pVM->hm.s.fNestedPaging;
908
909	bool const fVGif = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VGIF);
910	bool const fUseVGif = fVGif && pVM->hm.s.svm.fVGif;
911	#endif
912
913	PVMCPU pVCpu = &pVM->aCpus[0];
914	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
915	AssertMsgReturn(pVmcb, ("Invalid pVmcb for vcpu[0]\n"), VERR_SVM_INVALID_PVMCB);
916	PSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
917
918	/* Always trap #AC for reasons of security. */
919	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT_32(X86_XCPT_AC);
920
921	/* Always trap #DB for reasons of security. */
922	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT_32(X86_XCPT_DB);
923
924	/* Trap exceptions unconditionally (debug purposes). */
925	#ifdef HMSVM_ALWAYS_TRAP_PF
926	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT(X86_XCPT_PF);
927	#endif
928	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
929	/* If you add any exceptions here, make sure to update hmR0SvmHandleExit(). */
930	pVmcbCtrl->u32InterceptXcpt \|= 0
931	\| RT_BIT(X86_XCPT_BP)
932	\| RT_BIT(X86_XCPT_DE)
933	\| RT_BIT(X86_XCPT_NM)
934	\| RT_BIT(X86_XCPT_UD)
935	\| RT_BIT(X86_XCPT_NP)
936	\| RT_BIT(X86_XCPT_SS)
937	\| RT_BIT(X86_XCPT_GP)
938	\| RT_BIT(X86_XCPT_PF)
939	\| RT_BIT(X86_XCPT_MF)
940	;
941	#endif
942
943	/* Apply the exceptions intercepts needed by the GIM provider. */
944	if (pVCpu->hm.s.fGIMTrapXcptUD)
945	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT(X86_XCPT_UD);
946
947	/* Set up unconditional intercepts and conditions. */
948	pVmcbCtrl->u64InterceptCtrl = HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS
949	\| SVM_CTRL_INTERCEPT_VMMCALL;
950
951	#ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
952	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_TASK_SWITCH;
953	#endif
954
955	#ifdef VBOX_WITH_NESTED_HWVIRT
956	/* Virtualized VMSAVE/VMLOAD. */
957	pVmcbCtrl->LbrVirt.n.u1VirtVmsaveVmload = fUseVirtVmsaveVmload;
958	if (!fUseVirtVmsaveVmload)
959	{
960	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_VMSAVE
961	\| SVM_CTRL_INTERCEPT_VMLOAD;
962	}
963
964	/* Virtual GIF. */
965	pVmcbCtrl->IntCtrl.n.u1VGifEnable = fUseVGif;
966	if (!fUseVGif)
967	{
968	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_CLGI
969	\| SVM_CTRL_INTERCEPT_STGI;
970	}
971	#endif
972
973	/* CR4 writes must always be intercepted for tracking PGM mode changes. */
974	pVmcbCtrl->u16InterceptWrCRx = RT_BIT(4);
975
976	/* Intercept all DRx reads and writes by default. Changed later on. */
977	pVmcbCtrl->u16InterceptRdDRx = 0xffff;
978	pVmcbCtrl->u16InterceptWrDRx = 0xffff;
979
980	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
981	pVmcbCtrl->IntCtrl.n.u1VIntrMasking = 1;
982
983	/* Ignore the priority in the virtual TPR. This is necessary for delivering PIC style (ExtInt) interrupts
984	and we currently deliver both PIC and APIC interrupts alike, see hmR0SvmEvaluatePendingEvent() */
985	pVmcbCtrl->IntCtrl.n.u1IgnoreTPR = 1;
986
987	/* Set the IO permission bitmap physical addresses. */
988	pVmcbCtrl->u64IOPMPhysAddr = g_HCPhysIOBitmap;
989
990	/* LBR virtualization. */
991	pVmcbCtrl->LbrVirt.n.u1LbrVirt = fUseLbrVirt;
992
993	/* The host ASID MBZ, for the guest start with 1. */
994	pVmcbCtrl->TLBCtrl.n.u32ASID = 1;
995
996	/* Setup Nested Paging. This doesn't change throughout the execution time of the VM. */
997	pVmcbCtrl->NestedPagingCtrl.n.u1NestedPaging = pVM->hm.s.fNestedPaging;
998
999	/* Without Nested Paging, we need additionally intercepts. */
1000	if (!pVM->hm.s.fNestedPaging)
1001	{
1002	/* CR3 reads/writes must be intercepted; our shadow values differ from the guest values. */
1003	pVmcbCtrl->u16InterceptRdCRx \|= RT_BIT(3);
1004	pVmcbCtrl->u16InterceptWrCRx \|= RT_BIT(3);
1005
1006	/* Intercept INVLPG and task switches (may change CR3, EFLAGS, LDT). */
1007	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_INVLPG
1008	\| SVM_CTRL_INTERCEPT_TASK_SWITCH;
1009
1010	/* Page faults must be intercepted to implement shadow paging. */
1011	pVmcbCtrl->u32InterceptXcpt \|= RT_BIT(X86_XCPT_PF);
1012	}
1013
1014	/* Setup Pause Filter for guest pause-loop (spinlock) exiting. */
1015	if (fUsePauseFilter)
1016	{
1017	Assert(pVM->hm.s.svm.cPauseFilter > 0);
1018	pVmcbCtrl->u16PauseFilterCount = pVM->hm.s.svm.cPauseFilter;
1019	if (fPauseFilterThreshold)
1020	pVmcbCtrl->u16PauseFilterThreshold = pVM->hm.s.svm.cPauseFilterThresholdTicks;
1021	pVmcbCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_PAUSE;
1022	}
1023
1024	/*
1025	* Setup the MSR permission bitmap.
1026	* The following MSRs are saved/restored automatically during the world-switch.
1027	* Don't intercept guest read/write accesses to these MSRs.
1028	*/
1029	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
1030	PCPUMCTX pCtx = &pVCpu->cpum.GstCtx;
1031	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1032	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_CSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1033	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K6_STAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1034	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_SF_MASK, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1035	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_FS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1036	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1037	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_KERNEL_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1038	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_IA32_SYSENTER_CS, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1039	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_IA32_SYSENTER_ESP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1040	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_IA32_SYSENTER_EIP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1041	pVmcbCtrl->u64MSRPMPhysAddr = pVCpu->hm.s.svm.HCPhysMsrBitmap;
1042
1043	/* Initialize the #VMEXIT history array with end-of-array markers (UINT16_MAX). */
1044	Assert(!pVCpu->hm.s.idxExitHistoryFree);
1045	HMCPU_EXIT_HISTORY_RESET(pVCpu);
1046
1047	/* Initially all VMCB clean bits MBZ indicating that everything should be loaded from the VMCB in memory. */
1048	Assert(pVmcbCtrl->u32VmcbCleanBits == 0);
1049
1050	for (VMCPUID i = 1; i < pVM->cCpus; i++)
1051	{
1052	PVMCPU pVCpuCur = &pVM->aCpus[i];
1053	PSVMVMCB pVmcbCur = pVM->aCpus[i].hm.s.svm.pVmcb;
1054	AssertMsgReturn(pVmcbCur, ("Invalid pVmcb for vcpu[%u]\n", i), VERR_SVM_INVALID_PVMCB);
1055	PSVMVMCBCTRL pVmcbCtrlCur = &pVmcbCur->ctrl;
1056
1057	/* Copy the VMCB control area. */
1058	memcpy(pVmcbCtrlCur, pVmcbCtrl, sizeof(*pVmcbCtrlCur));
1059
1060	/* Copy the MSR bitmap and setup the VCPU-specific host physical address. */
1061	uint8_t pbMsrBitmapCur = (uint8_t )pVCpuCur->hm.s.svm.pvMsrBitmap;
1062	memcpy(pbMsrBitmapCur, pbMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
1063	pVmcbCtrlCur->u64MSRPMPhysAddr = pVCpuCur->hm.s.svm.HCPhysMsrBitmap;
1064
1065	/* Initialize the #VMEXIT history array with end-of-array markers (UINT16_MAX). */
1066	Assert(!pVCpuCur->hm.s.idxExitHistoryFree);
1067	HMCPU_EXIT_HISTORY_RESET(pVCpuCur);
1068
1069	/* Initially all VMCB clean bits MBZ indicating that everything should be loaded from the VMCB in memory. */
1070	Assert(pVmcbCtrlCur->u32VmcbCleanBits == 0);
1071
1072	/* Verify our assumption that GIM providers trap #UD uniformly across VCPUs initially. */
1073	Assert(pVCpuCur->hm.s.fGIMTrapXcptUD == pVCpu->hm.s.fGIMTrapXcptUD);
1074	}
1075
1076	return VINF_SUCCESS;
1077	}
1078
1079
1080	/**
1081	* Gets a pointer to the currently active guest (or nested-guest) VMCB.
1082	*
1083	* @returns Pointer to the current context VMCB.
1084	* @param pVCpu The cross context virtual CPU structure.
1085	* @param pCtx Pointer to the guest-CPU context.
1086	*/
1087	DECLINLINE(PSVMVMCB) hmR0SvmGetCurrentVmcb(PVMCPU pVCpu, PCPUMCTX pCtx)
1088	{
1089	#ifdef VBOX_WITH_NESTED_HWVIRT
1090	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1091	return pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
1092	#else
1093	RT_NOREF(pCtx);
1094	#endif
1095	return pVCpu->hm.s.svm.pVmcb;
1096	}
1097
1098
1099	/**
1100	* Gets a pointer to the nested-guest VMCB cache.
1101	*
1102	* @returns Pointer to the nested-guest VMCB cache.
1103	* @param pVCpu The cross context virtual CPU structure.
1104	* @param pCtx Pointer to the guest-CPU context.
1105	*/
1106	DECLINLINE(PSVMNESTEDVMCBCACHE) hmR0SvmGetNestedVmcbCache(PVMCPU pVCpu, PCPUMCTX pCtx)
1107	{
1108	#ifdef VBOX_WITH_NESTED_HWVIRT
1109	Assert(pCtx->hwvirt.svm.fHMCachedVmcb); RT_NOREF(pCtx);
1110	return &pVCpu->hm.s.svm.NstGstVmcbCache;
1111	#else
1112	RT_NOREF2(pVCpu, pCtx);
1113	return NULL;
1114	#endif
1115	}
1116
1117
1118	/**
1119	* Invalidates a guest page by guest virtual address.
1120	*
1121	* @returns VBox status code.
1122	* @param pVM The cross context VM structure.
1123	* @param pVCpu The cross context virtual CPU structure.
1124	* @param GCVirt Guest virtual address of the page to invalidate.
1125	*/
1126	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
1127	{
1128	AssertReturn(pVM, VERR_INVALID_PARAMETER);
1129	Assert(pVM->hm.s.svm.fSupported);
1130
1131	bool fFlushPending = pVM->hm.s.svm.fAlwaysFlushTLB \|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_FLUSH);
1132
1133	/* Skip it if a TLB flush is already pending. */
1134	if (!fFlushPending)
1135	{
1136	Log4(("SVMR0InvalidatePage %RGv\n", GCVirt));
1137
1138	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1139	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
1140	AssertMsgReturn(pVmcb, ("Invalid pVmcb!\n"), VERR_SVM_INVALID_PVMCB);
1141
1142	#if HC_ARCH_BITS == 32
1143	/* If we get a flush in 64-bit guest mode, then force a full TLB flush. INVLPGA takes only 32-bit addresses. */
1144	if (CPUMIsGuestInLongMode(pVCpu))
1145	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
1146	else
1147	#endif
1148	{
1149	SVMR0InvlpgA(GCVirt, pVmcb->ctrl.TLBCtrl.n.u32ASID);
1150	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
1151	}
1152	}
1153	return VINF_SUCCESS;
1154	}
1155
1156
1157	/**
1158	* Flushes the appropriate tagged-TLB entries.
1159	*
1160	* @param pVCpu The cross context virtual CPU structure.
1161	* @param pCtx Pointer to the guest-CPU or nested-guest-CPU context.
1162	* @param pVmcb Pointer to the VM control block.
1163	* @param pHostCpu Pointer to the HM host-CPU info.
1164	*/
1165	static void hmR0SvmFlushTaggedTlb(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb, PHMGLOBALCPUINFO pHostCpu)
1166	{
1167	#ifndef VBOX_WITH_NESTED_HWVIRT
1168	RT_NOREF(pCtx);
1169	#endif
1170	PVM pVM = pVCpu->CTX_SUFF(pVM);
1171
1172	/*
1173	* Force a TLB flush for the first world switch if the current CPU differs from the one we ran on last.
1174	* This can happen both for start & resume due to long jumps back to ring-3.
1175	*
1176	* We also force a TLB flush every time when executing a nested-guest VCPU as there is no correlation
1177	* between it and the physical CPU.
1178	*
1179	* If the TLB flush count changed, another VM (VCPU rather) has hit the ASID limit while flushing the TLB,
1180	* so we cannot reuse the ASIDs without flushing.
1181	*/
1182	bool fNewAsid = false;
1183	Assert(pHostCpu->idCpu != NIL_RTCPUID);
1184	if ( pVCpu->hm.s.idLastCpu != pHostCpu->idCpu
1185	\|\| pVCpu->hm.s.cTlbFlushes != pHostCpu->cTlbFlushes
1186	#ifdef VBOX_WITH_NESTED_HWVIRT
1187	\|\| CPUMIsGuestInSvmNestedHwVirtMode(pCtx)
1188	#endif
1189	)
1190	{
1191	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
1192	pVCpu->hm.s.fForceTLBFlush = true;
1193	fNewAsid = true;
1194	}
1195
1196	/* Set TLB flush state as checked until we return from the world switch. */
1197	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true);
1198
1199	/* Check for explicit TLB flushes. */
1200	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
1201	{
1202	pVCpu->hm.s.fForceTLBFlush = true;
1203	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
1204	}
1205
1206	/*
1207	* If the AMD CPU erratum 170, We need to flush the entire TLB for each world switch. Sad.
1208	* This Host CPU requirement takes precedence.
1209	*/
1210	if (pVM->hm.s.svm.fAlwaysFlushTLB)
1211	{
1212	pHostCpu->uCurrentAsid = 1;
1213	pVCpu->hm.s.uCurrentAsid = 1;
1214	pVCpu->hm.s.cTlbFlushes = pHostCpu->cTlbFlushes;
1215	pVCpu->hm.s.idLastCpu = pHostCpu->idCpu;
1216	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
1217
1218	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
1219	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1220	}
1221	else
1222	{
1223	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_NOTHING;
1224	if (pVCpu->hm.s.fForceTLBFlush)
1225	{
1226	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
1227	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1228
1229	if (fNewAsid)
1230	{
1231	++pHostCpu->uCurrentAsid;
1232
1233	bool fHitASIDLimit = false;
1234	if (pHostCpu->uCurrentAsid >= pVM->hm.s.uMaxAsid)
1235	{
1236	pHostCpu->uCurrentAsid = 1; /* Wraparound at 1; host uses 0 */
1237	pHostCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new ASID. */
1238	fHitASIDLimit = true;
1239	}
1240
1241	if ( fHitASIDLimit
1242	\|\| pHostCpu->fFlushAsidBeforeUse)
1243	{
1244	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
1245	pHostCpu->fFlushAsidBeforeUse = false;
1246	}
1247
1248	pVCpu->hm.s.uCurrentAsid = pHostCpu->uCurrentAsid;
1249	pVCpu->hm.s.idLastCpu = pHostCpu->idCpu;
1250	pVCpu->hm.s.cTlbFlushes = pHostCpu->cTlbFlushes;
1251	}
1252	else
1253	{
1254	if (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
1255	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
1256	else
1257	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
1258	}
1259
1260	pVCpu->hm.s.fForceTLBFlush = false;
1261	}
1262	}
1263
1264	/* Update VMCB with the ASID. */
1265	if (pVmcb->ctrl.TLBCtrl.n.u32ASID != pVCpu->hm.s.uCurrentAsid)
1266	{
1267	pVmcb->ctrl.TLBCtrl.n.u32ASID = pVCpu->hm.s.uCurrentAsid;
1268	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_ASID;
1269	}
1270
1271	AssertMsg(pVCpu->hm.s.idLastCpu == pHostCpu->idCpu,
1272	("vcpu idLastCpu=%u hostcpu idCpu=%u\n", pVCpu->hm.s.idLastCpu, pHostCpu->idCpu));
1273	AssertMsg(pVCpu->hm.s.cTlbFlushes == pHostCpu->cTlbFlushes,
1274	("Flush count mismatch for cpu %u (%u vs %u)\n", pHostCpu->idCpu, pVCpu->hm.s.cTlbFlushes, pHostCpu->cTlbFlushes));
1275	AssertMsg(pHostCpu->uCurrentAsid >= 1 && pHostCpu->uCurrentAsid < pVM->hm.s.uMaxAsid,
1276	("cpu%d uCurrentAsid = %x\n", pHostCpu->idCpu, pHostCpu->uCurrentAsid));
1277	AssertMsg(pVCpu->hm.s.uCurrentAsid >= 1 && pVCpu->hm.s.uCurrentAsid < pVM->hm.s.uMaxAsid,
1278	("cpu%d VM uCurrentAsid = %x\n", pHostCpu->idCpu, pVCpu->hm.s.uCurrentAsid));
1279
1280	#ifdef VBOX_WITH_STATISTICS
1281	if (pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_NOTHING)
1282	STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch);
1283	else if ( pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT
1284	\|\| pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT_RETAIN_GLOBALS)
1285	{
1286	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
1287	}
1288	else
1289	{
1290	Assert(pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_ENTIRE);
1291	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushEntire);
1292	}
1293	#endif
1294	}
1295
1296
1297	/** @name 64-bit guest on 32-bit host OS helper functions.
1298	*
1299	* The host CPU is still 64-bit capable but the host OS is running in 32-bit
1300	* mode (code segment, paging). These wrappers/helpers perform the necessary
1301	* bits for the 32->64 switcher.
1302	*
1303	* @{ */
1304	#if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS)
1305	/**
1306	* Prepares for and executes VMRUN (64-bit guests on a 32-bit host).
1307	*
1308	* @returns VBox status code.
1309	* @param HCPhysVmcbHost Physical address of host VMCB.
1310	* @param HCPhysVmcb Physical address of the VMCB.
1311	* @param pCtx Pointer to the guest-CPU context.
1312	* @param pVM The cross context VM structure.
1313	* @param pVCpu The cross context virtual CPU structure.
1314	*/
1315	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS HCPhysVmcbHost, RTHCPHYS HCPhysVmcb, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
1316	{
1317	uint32_t aParam[8];
1318	aParam[0] = RT_LO_U32(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Lo. */
1319	aParam[1] = RT_HI_U32(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Hi. */
1320	aParam[2] = RT_LO_U32(HCPhysVmcb); /* Param 2: HCPhysVmcb - Lo. */
1321	aParam[3] = RT_HI_U32(HCPhysVmcb); /* Param 2: HCPhysVmcb - Hi. */
1322	aParam[4] = VM_RC_ADDR(pVM, pVM);
1323	aParam[5] = 0;
1324	aParam[6] = VM_RC_ADDR(pVM, pVCpu);
1325	aParam[7] = 0;
1326
1327	return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, HM64ON32OP_SVMRCVMRun64, RT_ELEMENTS(aParam), &aParam[0]);
1328	}
1329
1330
1331	/**
1332	* Executes the specified VMRUN handler in 64-bit mode.
1333	*
1334	* @returns VBox status code.
1335	* @param pVM The cross context VM structure.
1336	* @param pVCpu The cross context virtual CPU structure.
1337	* @param pCtx Pointer to the guest-CPU context.
1338	* @param enmOp The operation to perform.
1339	* @param cParams Number of parameters.
1340	* @param paParam Array of 32-bit parameters.
1341	*/
1342	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, HM64ON32OP enmOp,
1343	uint32_t cParams, uint32_t *paParam)
1344	{
1345	AssertReturn(pVM->hm.s.pfnHost32ToGuest64R0, VERR_HM_NO_32_TO_64_SWITCHER);
1346	Assert(enmOp > HM64ON32OP_INVALID && enmOp < HM64ON32OP_END);
1347
1348	NOREF(pCtx);
1349
1350	/* Disable interrupts. */
1351	RTHCUINTREG uOldEFlags = ASMIntDisableFlags();
1352
1353	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1354	RTCPUID idHostCpu = RTMpCpuId();
1355	CPUMR0SetLApic(pVCpu, idHostCpu);
1356	#endif
1357
1358	CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
1359	CPUMSetHyperEIP(pVCpu, enmOp);
1360	for (int i = (int)cParams - 1; i >= 0; i--)
1361	CPUMPushHyper(pVCpu, paParam[i]);
1362
1363	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatWorldSwitch3264, z);
1364	/* Call the switcher. */
1365	int rc = pVM->hm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
1366	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatWorldSwitch3264, z);
1367
1368	/* Restore interrupts. */
1369	ASMSetFlags(uOldEFlags);
1370	return rc;
1371	}
1372
1373	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */
1374	/** @} */
1375
1376
1377	/**
1378	* Sets an exception intercept in the specified VMCB.
1379	*
1380	* @param pVmcb Pointer to the VM control block.
1381	* @param uXcpt The exception (X86_XCPT_*).
1382	*/
1383	DECLINLINE(void) hmR0SvmSetXcptIntercept(PSVMVMCB pVmcb, uint8_t uXcpt)
1384	{
1385	if (!(pVmcb->ctrl.u32InterceptXcpt & RT_BIT(uXcpt)))
1386	{
1387	pVmcb->ctrl.u32InterceptXcpt \|= RT_BIT(uXcpt);
1388	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1389	}
1390	}
1391
1392
1393	/**
1394	* Clears an exception intercept in the specified VMCB.
1395	*
1396	* @param pVCpu The cross context virtual CPU structure.
1397	* @param pCtx Pointer to the guest-CPU context.
1398	* @param pVmcb Pointer to the VM control block.
1399	* @param uXcpt The exception (X86_XCPT_*).
1400	*
1401	* @remarks This takes into account if we're executing a nested-guest and only
1402	* removes the exception intercept if both the guest -and- nested-guest
1403	* are not intercepting it.
1404	*/
1405	DECLINLINE(void) hmR0SvmClearXcptIntercept(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb, uint8_t uXcpt)
1406	{
1407	Assert(uXcpt != X86_XCPT_DB);
1408	Assert(uXcpt != X86_XCPT_AC);
1409	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
1410	if (pVmcb->ctrl.u32InterceptXcpt & RT_BIT(uXcpt))
1411	{
1412	bool fRemove = true;
1413	#ifdef VBOX_WITH_NESTED_HWVIRT
1414	/* Only remove the intercept if the nested-guest is also not intercepting it! */
1415	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1416	{
1417	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu, pCtx);
1418	fRemove = !(pVmcbNstGstCache->u32InterceptXcpt & RT_BIT(uXcpt));
1419	}
1420	#else
1421	RT_NOREF2(pVCpu, pCtx);
1422	#endif
1423	if (fRemove)
1424	{
1425	pVmcb->ctrl.u32InterceptXcpt &= ~RT_BIT(uXcpt);
1426	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1427	}
1428	}
1429	#else
1430	RT_NOREF3(pVCpu, pCtx, pVmcb);
1431	#endif
1432	}
1433
1434
1435	/**
1436	* Sets a control intercept in the specified VMCB.
1437	*
1438	* @param pVmcb Pointer to the VM control block.
1439	* @param fCtrlIntercept The control intercept (SVM_CTRL_INTERCEPT_*).
1440	*/
1441	DECLINLINE(void) hmR0SvmSetCtrlIntercept(PSVMVMCB pVmcb, uint64_t fCtrlIntercept)
1442	{
1443	if (!(pVmcb->ctrl.u64InterceptCtrl & fCtrlIntercept))
1444	{
1445	pVmcb->ctrl.u64InterceptCtrl \|= fCtrlIntercept;
1446	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1447	}
1448	}
1449
1450
1451	/**
1452	* Clears a control intercept in the specified VMCB.
1453	*
1454	* @returns @c true if the intercept is still set, @c false otherwise.
1455	* @param pVCpu The cross context virtual CPU structure.
1456	* @param pCtx Pointer to the guest-CPU context.
1457	* @param pVmcb Pointer to the VM control block.
1458	* @param fCtrlIntercept The control intercept (SVM_CTRL_INTERCEPT_*).
1459	*
1460	* @remarks This takes into account if we're executing a nested-guest and only
1461	* removes the control intercept if both the guest -and- nested-guest
1462	* are not intercepting it.
1463	*/
1464	DECLINLINE(bool) hmR0SvmClearCtrlIntercept(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb, uint64_t fCtrlIntercept)
1465	{
1466	if (pVmcb->ctrl.u64InterceptCtrl & fCtrlIntercept)
1467	{
1468	bool fRemove = true;
1469	#ifdef VBOX_WITH_NESTED_HWVIRT
1470	/* Only remove the control intercept if the nested-guest is also not intercepting it! */
1471	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1472	{
1473	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu, pCtx);
1474	fRemove = !(pVmcbNstGstCache->u64InterceptCtrl & fCtrlIntercept);
1475	}
1476	#else
1477	RT_NOREF2(pVCpu, pCtx);
1478	#endif
1479	if (fRemove)
1480	{
1481	pVmcb->ctrl.u64InterceptCtrl &= ~fCtrlIntercept;
1482	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1483	}
1484	}
1485
1486	return RT_BOOL(pVmcb->ctrl.u64InterceptCtrl & fCtrlIntercept);
1487	}
1488
1489
1490	/**
1491	* Loads the guest (or nested-guest) CR0 control register into the guest-state
1492	* area in the VMCB.
1493	*
1494	* Although the guest CR0 is a separate field in the VMCB we have to consider
1495	* the FPU state itself which is shared between the host and the guest.
1496	*
1497	* @returns VBox status code.
1498	* @param pVCpu The cross context virtual CPU structure.
1499	* @param pVmcb Pointer to the VM control block.
1500	* @param pCtx Pointer to the guest-CPU context.
1501	*
1502	* @remarks No-long-jump zone!!!
1503	*/
1504	static void hmR0SvmLoadSharedCR0(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1505	{
1506	/* The guest FPU is now always pre-loaded before executing guest code, see @bugref{7243#c101}. */
1507	Assert(CPUMIsGuestFPUStateActive(pVCpu));
1508
1509	uint64_t const uGuestCr0 = pCtx->cr0;
1510	uint64_t uShadowCr0 = uGuestCr0;
1511
1512	/* Always enable caching. */
1513	uShadowCr0 &= ~(X86_CR0_CD \| X86_CR0_NW);
1514
1515	/* When Nested Paging is not available use shadow page tables and intercept #PFs (the latter done in SVMR0SetupVM()). */
1516	if (!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging)
1517	{
1518	uShadowCr0 \|= X86_CR0_PG /* Use shadow page tables. */
1519	\| X86_CR0_WP; /* Guest CPL 0 writes to its read-only pages should cause a #PF #VMEXIT. */
1520	}
1521
1522	/*
1523	* Use the #MF style of legacy-FPU error reporting for now. Although AMD-V has MSRs that lets us
1524	* isolate the host from it, IEM/REM still needs work to emulate it properly. see @bugref{7243#c103}.
1525	*/
1526	if (!(uGuestCr0 & X86_CR0_NE))
1527	{
1528	uShadowCr0 \|= X86_CR0_NE;
1529	hmR0SvmSetXcptIntercept(pVmcb, X86_XCPT_MF);
1530	}
1531	else
1532	hmR0SvmClearXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_MF);
1533
1534	/*
1535	* If the shadow and guest CR0 are identical we can avoid intercepting CR0 reads.
1536	*
1537	* CR0 writes still needs interception as PGM requires tracking paging mode changes, see @bugref{6944}.
1538	* We also don't ever want to honor weird things like cache disable from the guest. However, we can
1539	* avoid intercepting changes to the TS & MP bits by clearing the CR0 write intercept below and keeping
1540	* SVM_CTRL_INTERCEPT_CR0_SEL_WRITE instead.
1541	*/
1542	if (uShadowCr0 == uGuestCr0)
1543	{
1544	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1545	{
1546	pVmcb->ctrl.u16InterceptRdCRx &= ~RT_BIT(0);
1547	pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(0);
1548	Assert(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_CR0_SEL_WRITE);
1549	}
1550	else
1551	{
1552	/* If the nested-hypervisor intercepts CR0 reads/writes, we need to continue intercepting them. */
1553	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu, pCtx);
1554	pVmcb->ctrl.u16InterceptRdCRx = (pVmcb->ctrl.u16InterceptRdCRx & ~RT_BIT(0))
1555	\| (pVmcbNstGstCache->u16InterceptRdCRx & RT_BIT(0));
1556	pVmcb->ctrl.u16InterceptWrCRx = (pVmcb->ctrl.u16InterceptWrCRx & ~RT_BIT(0))
1557	\| (pVmcbNstGstCache->u16InterceptWrCRx & RT_BIT(0));
1558	}
1559	}
1560	else
1561	{
1562	pVmcb->ctrl.u16InterceptRdCRx \|= RT_BIT(0);
1563	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(0);
1564	}
1565	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1566
1567	Assert(RT_HI_U32(uShadowCr0) == 0);
1568	if (pVmcb->guest.u64CR0 != uShadowCr0)
1569	{
1570	pVmcb->guest.u64CR0 = uShadowCr0;
1571	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1572	}
1573	}
1574
1575
1576	/**
1577	* Loads the guest/nested-guest control registers (CR2, CR3, CR4) into the VMCB.
1578	*
1579	* @returns VBox status code.
1580	* @param pVCpu The cross context virtual CPU structure.
1581	* @param pVmcb Pointer to the VM control block.
1582	* @param pCtx Pointer to the guest-CPU context.
1583	*
1584	* @remarks No-long-jump zone!!!
1585	*/
1586	static int hmR0SvmLoadGuestControlRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1587	{
1588	PVM pVM = pVCpu->CTX_SUFF(pVM);
1589
1590	/*
1591	* Guest CR2.
1592	*/
1593	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR2))
1594	{
1595	pVmcb->guest.u64CR2 = pCtx->cr2;
1596	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CR2;
1597	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR2);
1598	}
1599
1600	/*
1601	* Guest CR3.
1602	*/
1603	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR3))
1604	{
1605	if (pVM->hm.s.fNestedPaging)
1606	{
1607	PGMMODE enmShwPagingMode;
1608	#if HC_ARCH_BITS == 32
1609	if (CPUMIsGuestInLongModeEx(pCtx))
1610	enmShwPagingMode = PGMMODE_AMD64_NX;
1611	else
1612	#endif
1613	enmShwPagingMode = PGMGetHostMode(pVM);
1614
1615	pVmcb->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
1616	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1617	Assert(pVmcb->ctrl.u64NestedPagingCR3);
1618	pVmcb->guest.u64CR3 = pCtx->cr3;
1619	}
1620	else
1621	{
1622	pVmcb->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
1623	Log4(("hmR0SvmLoadGuestControlRegs: CR3=%#RX64 (HyperCR3=%#RX64)\n", pCtx->cr3, pVmcb->guest.u64CR3));
1624	}
1625
1626	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1627	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR3);
1628	}
1629
1630	/*
1631	* Guest CR4.
1632	* ASSUMES this is done everytime we get in from ring-3! (XCR0)
1633	*/
1634	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR4))
1635	{
1636	uint64_t uShadowCr4 = pCtx->cr4;
1637	if (!pVM->hm.s.fNestedPaging)
1638	{
1639	switch (pVCpu->hm.s.enmShadowMode)
1640	{
1641	case PGMMODE_REAL:
1642	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
1643	AssertFailed();
1644	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1645
1646	case PGMMODE_32_BIT: /* 32-bit paging. */
1647	uShadowCr4 &= ~X86_CR4_PAE;
1648	break;
1649
1650	case PGMMODE_PAE: /* PAE paging. */
1651	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
1652	/** Must use PAE paging as we could use physical memory > 4 GB */
1653	uShadowCr4 \|= X86_CR4_PAE;
1654	break;
1655
1656	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
1657	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
1658	#ifdef VBOX_ENABLE_64_BITS_GUESTS
1659	break;
1660	#else
1661	AssertFailed();
1662	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1663	#endif
1664
1665	default: /* shut up gcc */
1666	AssertFailed();
1667	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1668	}
1669	}
1670
1671	/* Whether to save/load/restore XCR0 during world switch depends on CR4.OSXSAVE and host+guest XCR0. */
1672	pVCpu->hm.s.fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
1673
1674	/* Avoid intercepting CR4 reads if the guest and shadow CR4 values are identical. */
1675	if (uShadowCr4 == pCtx->cr4)
1676	{
1677	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
1678	pVmcb->ctrl.u16InterceptRdCRx &= ~RT_BIT(4);
1679	else
1680	{
1681	/* If the nested-hypervisor intercepts CR4 reads, we need to continue intercepting them. */
1682	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu, pCtx);
1683	pVmcb->ctrl.u16InterceptRdCRx = (pVmcb->ctrl.u16InterceptRdCRx & ~RT_BIT(4))
1684	\| (pVmcbNstGstCache->u16InterceptRdCRx & RT_BIT(4));
1685	}
1686	}
1687	else
1688	pVmcb->ctrl.u16InterceptRdCRx \|= RT_BIT(4);
1689
1690	/* CR4 writes are always intercepted (both guest, nested-guest) from tracking PGM mode changes. */
1691	Assert(pVmcb->ctrl.u16InterceptWrCRx & RT_BIT(4));
1692
1693	/* Update VMCB with the shadow CR4 the appropriate VMCB clean bits. */
1694	Assert(RT_HI_U32(uShadowCr4) == 0);
1695	pVmcb->guest.u64CR4 = uShadowCr4;
1696	pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_CRX_EFER \| HMSVM_VMCB_CLEAN_INTERCEPTS);
1697
1698	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR4);
1699	}
1700
1701	return VINF_SUCCESS;
1702	}
1703
1704
1705	/**
1706	* Loads the guest (or nested-guest) segment registers into the VMCB.
1707	*
1708	* @returns VBox status code.
1709	* @param pVCpu The cross context virtual CPU structure.
1710	* @param pVmcb Pointer to the VM control block.
1711	* @param pCtx Pointer to the guest-CPU or nested-guest-CPU context.
1712	*
1713	* @remarks No-long-jump zone!!!
1714	*/
1715	static void hmR0SvmLoadGuestSegmentRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1716	{
1717	/* Guest Segment registers: CS, SS, DS, ES, FS, GS. */
1718	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS))
1719	{
1720	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, CS, cs);
1721	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, SS, ss);
1722	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, DS, ds);
1723	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, ES, es);
1724	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, FS, fs);
1725	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, GS, gs);
1726
1727	pVmcb->guest.u8CPL = pCtx->ss.Attr.n.u2Dpl;
1728	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
1729	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS);
1730	}
1731
1732	/* Guest TR. */
1733	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_TR))
1734	{
1735	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, TR, tr);
1736	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_TR);
1737	}
1738
1739	/* Guest LDTR. */
1740	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_LDTR))
1741	{
1742	HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, LDTR, ldtr);
1743	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LDTR);
1744	}
1745
1746	/* Guest GDTR. */
1747	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_GDTR))
1748	{
1749	pVmcb->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
1750	pVmcb->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
1751	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1752	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_GDTR);
1753	}
1754
1755	/* Guest IDTR. */
1756	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_IDTR))
1757	{
1758	pVmcb->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
1759	pVmcb->guest.IDTR.u64Base = pCtx->idtr.pIdt;
1760	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1761	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_IDTR);
1762	}
1763	}
1764
1765
1766	/**
1767	* Loads the guest (or nested-guest) MSRs into the VMCB.
1768	*
1769	* @param pVCpu The cross context virtual CPU structure.
1770	* @param pVmcb Pointer to the VM control block.
1771	* @param pCtx Pointer to the guest-CPU context.
1772	*
1773	* @remarks No-long-jump zone!!!
1774	*/
1775	static void hmR0SvmLoadGuestMsrs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1776	{
1777	/* Guest Sysenter MSRs. */
1778	pVmcb->guest.u64SysEnterCS = pCtx->SysEnter.cs;
1779	pVmcb->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
1780	pVmcb->guest.u64SysEnterESP = pCtx->SysEnter.esp;
1781
1782	/*
1783	* Guest EFER MSR.
1784	* AMD-V requires guest EFER.SVME to be set. Weird.
1785	* See AMD spec. 15.5.1 "Basic Operation" \| "Canonicalization and Consistency Checks".
1786	*/
1787	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_EFER_MSR))
1788	{
1789	pVmcb->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
1790	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1791	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
1792	}
1793
1794	/* 64-bit MSRs. */
1795	if (CPUMIsGuestInLongModeEx(pCtx))
1796	{
1797	/* Load these always as the guest may modify FS/GS base using MSRs in 64-bit mode which we don't intercept. */
1798	pVmcb->guest.FS.u64Base = pCtx->fs.u64Base;
1799	pVmcb->guest.GS.u64Base = pCtx->gs.u64Base;
1800	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
1801	}
1802	else
1803	{
1804	/* If the guest isn't in 64-bit mode, clear MSR_K6_LME bit from guest EFER otherwise AMD-V expects amd64 shadow paging. */
1805	if (pCtx->msrEFER & MSR_K6_EFER_LME)
1806	{
1807	pVmcb->guest.u64EFER &= ~MSR_K6_EFER_LME;
1808	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1809	}
1810	}
1811
1812	/** @todo The following are used in 64-bit only (SYSCALL/SYSRET) but they might
1813	* be writable in 32-bit mode. Clarify with AMD spec. */
1814	pVmcb->guest.u64STAR = pCtx->msrSTAR;
1815	pVmcb->guest.u64LSTAR = pCtx->msrLSTAR;
1816	pVmcb->guest.u64CSTAR = pCtx->msrCSTAR;
1817	pVmcb->guest.u64SFMASK = pCtx->msrSFMASK;
1818	pVmcb->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE;
1819
1820	/*
1821	* Setup the PAT MSR (applicable for Nested Paging only).
1822	*
1823	* While guests can modify and see the modified values throug the shadow values,
1824	* we shall not honor any guest modifications of this MSR to ensure caching is always
1825	* enabled similar to how we always run with CR0.CD and NW bits cleared.
1826	*
1827	* For nested-guests this needs to always be set as well, see @bugref{7243#c109}.
1828	*/
1829	pVmcb->guest.u64PAT = MSR_IA32_CR_PAT_INIT_VAL;
1830
1831	/* Enable the last branch record bit if LBR virtualization is enabled. */
1832	if (pVmcb->ctrl.LbrVirt.n.u1LbrVirt)
1833	pVmcb->guest.u64DBGCTL = MSR_IA32_DEBUGCTL_LBR;
1834	}
1835
1836
1837	/**
1838	* Loads the guest (or nested-guest) debug state into the VMCB and programs the
1839	* necessary intercepts accordingly.
1840	*
1841	* @param pVCpu The cross context virtual CPU structure.
1842	* @param pVmcb Pointer to the VM control block.
1843	* @param pCtx Pointer to the guest-CPU context.
1844	*
1845	* @remarks No-long-jump zone!!!
1846	* @remarks Requires EFLAGS to be up-to-date in the VMCB!
1847	*/
1848	static void hmR0SvmLoadSharedDebugState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1849	{
1850	bool fInterceptMovDRx = false;
1851
1852	/*
1853	* Anyone single stepping on the host side? If so, we'll have to use the
1854	* trap flag in the guest EFLAGS since AMD-V doesn't have a trap flag on
1855	* the VMM level like the VT-x implementations does.
1856	*/
1857	bool const fStepping = pVCpu->hm.s.fSingleInstruction \|\| DBGFIsStepping(pVCpu);
1858	if (fStepping)
1859	{
1860	pVCpu->hm.s.fClearTrapFlag = true;
1861	pVmcb->guest.u64RFlags \|= X86_EFL_TF;
1862	fInterceptMovDRx = true; /* Need clean DR6, no guest mess. */
1863	}
1864
1865	if ( fStepping
1866	\|\| (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
1867	{
1868	/*
1869	* Use the combined guest and host DRx values found in the hypervisor
1870	* register set because the debugger has breakpoints active or someone
1871	* is single stepping on the host side.
1872	*
1873	* Note! DBGF expects a clean DR6 state before executing guest code.
1874	*/
1875	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1876	if ( CPUMIsGuestInLongModeEx(pCtx)
1877	&& !CPUMIsHyperDebugStateActivePending(pVCpu))
1878	{
1879	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1880	Assert(!CPUMIsGuestDebugStateActivePending(pVCpu));
1881	Assert(CPUMIsHyperDebugStateActivePending(pVCpu));
1882	}
1883	else
1884	#endif
1885	if (!CPUMIsHyperDebugStateActive(pVCpu))
1886	{
1887	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1888	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
1889	Assert(CPUMIsHyperDebugStateActive(pVCpu));
1890	}
1891
1892	/* Update DR6 & DR7. (The other DRx values are handled by CPUM one way or the other.) */
1893	if ( pVmcb->guest.u64DR6 != X86_DR6_INIT_VAL
1894	\|\| pVmcb->guest.u64DR7 != CPUMGetHyperDR7(pVCpu))
1895	{
1896	pVmcb->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
1897	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
1898	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1899	pVCpu->hm.s.fUsingHyperDR7 = true;
1900	}
1901
1902	/** @todo If we cared, we could optimize to allow the guest to read registers
1903	* with the same values. */
1904	fInterceptMovDRx = true;
1905	Log5(("hmR0SvmLoadSharedDebugState: Loaded hyper DRx\n"));
1906	}
1907	else
1908	{
1909	/*
1910	* Update DR6, DR7 with the guest values if necessary.
1911	*/
1912	if ( pVmcb->guest.u64DR7 != pCtx->dr[7]
1913	\|\| pVmcb->guest.u64DR6 != pCtx->dr[6])
1914	{
1915	pVmcb->guest.u64DR7 = pCtx->dr[7];
1916	pVmcb->guest.u64DR6 = pCtx->dr[6];
1917	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1918	pVCpu->hm.s.fUsingHyperDR7 = false;
1919	}
1920
1921	/*
1922	* If the guest has enabled debug registers, we need to load them prior to
1923	* executing guest code so they'll trigger at the right time.
1924	*/
1925	if (pCtx->dr[7] & (X86_DR7_ENABLED_MASK \| X86_DR7_GD)) /** @todo Why GD? */
1926	{
1927	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1928	if ( CPUMIsGuestInLongModeEx(pCtx)
1929	&& !CPUMIsGuestDebugStateActivePending(pVCpu))
1930	{
1931	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1932	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1933	Assert(!CPUMIsHyperDebugStateActivePending(pVCpu));
1934	Assert(CPUMIsGuestDebugStateActivePending(pVCpu));
1935	}
1936	else
1937	#endif
1938	if (!CPUMIsGuestDebugStateActive(pVCpu))
1939	{
1940	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1941	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1942	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
1943	Assert(CPUMIsGuestDebugStateActive(pVCpu));
1944	}
1945	Log5(("hmR0SvmLoadSharedDebugState: Loaded guest DRx\n"));
1946	}
1947	/*
1948	* If no debugging enabled, we'll lazy load DR0-3. We don't need to
1949	* intercept #DB as DR6 is updated in the VMCB.
1950	*
1951	* Note! If we cared and dared, we could skip intercepting \#DB here.
1952	* However, \#DB shouldn't be performance critical, so we'll play safe
1953	* and keep the code similar to the VT-x code and always intercept it.
1954	*/
1955	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1956	else if ( !CPUMIsGuestDebugStateActivePending(pVCpu)
1957	&& !CPUMIsGuestDebugStateActive(pVCpu))
1958	#else
1959	else if (!CPUMIsGuestDebugStateActive(pVCpu))
1960	#endif
1961	{
1962	fInterceptMovDRx = true;
1963	}
1964	}
1965
1966	Assert(pVmcb->ctrl.u32InterceptXcpt & RT_BIT_32(X86_XCPT_DB));
1967	if (fInterceptMovDRx)
1968	{
1969	if ( pVmcb->ctrl.u16InterceptRdDRx != 0xffff
1970	\|\| pVmcb->ctrl.u16InterceptWrDRx != 0xffff)
1971	{
1972	pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
1973	pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
1974	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1975	}
1976	}
1977	else
1978	{
1979	if ( pVmcb->ctrl.u16InterceptRdDRx
1980	\|\| pVmcb->ctrl.u16InterceptWrDRx)
1981	{
1982	pVmcb->ctrl.u16InterceptRdDRx = 0;
1983	pVmcb->ctrl.u16InterceptWrDRx = 0;
1984	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1985	}
1986	}
1987	Log4(("hmR0SvmLoadSharedDebugState: DR6=%#RX64 DR7=%#RX64\n", pCtx->dr[6], pCtx->dr[7]));
1988	}
1989
1990
1991	#ifdef VBOX_WITH_NESTED_HWVIRT
1992	/**
1993	* Loads the nested-guest APIC state (currently just the TPR).
1994	*
1995	* @param pVCpu The cross context virtual CPU structure.
1996	* @param pVmcbNstGst Pointer to the nested-guest VM control block.
1997	*/
1998	static void hmR0SvmLoadGuestApicStateNested(PVMCPU pVCpu, PSVMVMCB pVmcbNstGst)
1999	{
2000	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_APIC_STATE))
2001	{
2002	Assert(pVmcbNstGst->ctrl.IntCtrl.n.u1VIntrMasking == 1); RT_NOREF(pVmcbNstGst);
2003	pVCpu->hm.s.svm.fSyncVTpr = false;
2004	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
2005	}
2006	}
2007
2008
2009	/**
2010	* Loads the nested-guest hardware virtualization state.
2011	*
2012	* @param pVCpu The cross context virtual CPU structure.
2013	* @param pVmcbNstGst Pointer to the nested-guest VM control block.
2014	* @param pCtx Pointer to the guest-CPU or nested-guest-CPU context.
2015	*/
2016	static void hmR0SvmLoadGuestHwvirtStateNested(PVMCPU pVCpu, PSVMVMCB pVmcbNstGst, PCPUMCTX pCtx)
2017	{
2018	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_HWVIRT))
2019	{
2020	/*
2021	* Ensure the nested-guest pause-filter counters don't exceed the outer guest values esp.
2022	* since SVM doesn't have a preemption timer.
2023	*
2024	* We do this here rather than in hmR0SvmSetupVmcbNested() as we may have been executing the
2025	* nested-guest in IEM incl. PAUSE instructions which would update the pause-filter counters
2026	* and may continue execution in SVM R0 without a nested-guest #VMEXIT in between.
2027	*/
2028	PVM pVM = pVCpu->CTX_SUFF(pVM);
2029	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2030	uint16_t const uGuestPauseFilterCount = pVM->hm.s.svm.cPauseFilter;
2031	uint16_t const uGuestPauseFilterThreshold = pVM->hm.s.svm.cPauseFilterThresholdTicks;
2032	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_PAUSE))
2033	{
2034	pVmcbNstGstCtrl->u16PauseFilterCount = RT_MIN(pCtx->hwvirt.svm.cPauseFilter, uGuestPauseFilterCount);
2035	pVmcbNstGstCtrl->u16PauseFilterThreshold = RT_MIN(pCtx->hwvirt.svm.cPauseFilterThreshold, uGuestPauseFilterThreshold);
2036	pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2037	}
2038	else
2039	{
2040	pVmcbNstGstCtrl->u16PauseFilterCount = uGuestPauseFilterCount;
2041	pVmcbNstGstCtrl->u16PauseFilterThreshold = uGuestPauseFilterThreshold;
2042	}
2043
2044	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_HWVIRT);
2045	}
2046	}
2047	#endif
2048
2049	/**
2050	* Loads the guest APIC state (currently just the TPR).
2051	*
2052	* @returns VBox status code.
2053	* @param pVCpu The cross context virtual CPU structure.
2054	* @param pVmcb Pointer to the VM control block.
2055	* @param pCtx Pointer to the guest-CPU context.
2056	*/
2057	static int hmR0SvmLoadGuestApicState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
2058	{
2059	if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_APIC_STATE))
2060	return VINF_SUCCESS;
2061
2062	int rc = VINF_SUCCESS;
2063	PVM pVM = pVCpu->CTX_SUFF(pVM);
2064	if ( PDMHasApic(pVM)
2065	&& APICIsEnabled(pVCpu))
2066	{
2067	bool fPendingIntr;
2068	uint8_t u8Tpr;
2069	rc = APICGetTpr(pVCpu, &u8Tpr, &fPendingIntr, NULL /* pu8PendingIrq */);
2070	AssertRCReturn(rc, rc);
2071
2072	/* Assume that we need to trap all TPR accesses and thus need not check on
2073	every #VMEXIT if we should update the TPR. */
2074	Assert(pVmcb->ctrl.IntCtrl.n.u1VIntrMasking);
2075	pVCpu->hm.s.svm.fSyncVTpr = false;
2076
2077	/* 32-bit guests uses LSTAR MSR for patching guest code which touches the TPR. */
2078	if (pVM->hm.s.fTPRPatchingActive)
2079	{
2080	pCtx->msrLSTAR = u8Tpr;
2081	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
2082
2083	/* If there are interrupts pending, intercept LSTAR writes, otherwise don't intercept reads or writes. */
2084	if (fPendingIntr)
2085	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_INTERCEPT_WRITE);
2086	else
2087	{
2088	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
2089	pVCpu->hm.s.svm.fSyncVTpr = true;
2090	}
2091	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
2092	}
2093	else
2094	{
2095	/* Bits 3-0 of the VTPR field correspond to bits 7-4 of the TPR (which is the Task-Priority Class). */
2096	pVmcb->ctrl.IntCtrl.n.u8VTPR = (u8Tpr >> 4);
2097
2098	/* If there are interrupts pending, intercept CR8 writes to evaluate ASAP if we can deliver the interrupt to the guest. */
2099	if (fPendingIntr)
2100	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
2101	else
2102	{
2103	pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
2104	pVCpu->hm.s.svm.fSyncVTpr = true;
2105	}
2106
2107	pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_INT_CTRL);
2108	}
2109	}
2110
2111	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
2112	return rc;
2113	}
2114
2115
2116	/**
2117	* Loads the exception interrupts required for guest (or nested-guest) execution in
2118	* the VMCB.
2119	*
2120	* @param pVCpu The cross context virtual CPU structure.
2121	* @param pVmcb Pointer to the VM control block.
2122	* @param pCtx Pointer to the guest-CPU context.
2123	*/
2124	static void hmR0SvmLoadGuestXcptIntercepts(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
2125	{
2126	/* If we modify intercepts from here, please check & adjust hmR0SvmLoadGuestXcptInterceptsNested()
2127	if required. */
2128	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_VMM_GUEST_XCPT_INTERCEPTS))
2129	{
2130	/* Trap #UD for GIM provider (e.g. for hypercalls). */
2131	if (pVCpu->hm.s.fGIMTrapXcptUD)
2132	hmR0SvmSetXcptIntercept(pVmcb, X86_XCPT_UD);
2133	else
2134	hmR0SvmClearXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_UD);
2135
2136	/* Trap #BP for INT3 debug breakpoints set by the VM debugger. */
2137	if (pVCpu->CTX_SUFF(pVM)->dbgf.ro.cEnabledInt3Breakpoints)
2138	hmR0SvmSetXcptIntercept(pVmcb, X86_XCPT_BP);
2139	else
2140	hmR0SvmClearXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_BP);
2141
2142	/* The remaining intercepts are handled elsewhere, e.g. in hmR0SvmLoadSharedCR0(). */
2143	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_VMM_GUEST_XCPT_INTERCEPTS);
2144	}
2145	}
2146
2147
2148	#ifdef VBOX_WITH_NESTED_HWVIRT
2149	/**
2150	* Merges guest and nested-guest intercepts for executing the nested-guest using
2151	* hardware-assisted SVM.
2152	*
2153	* This merges the guest and nested-guest intercepts in a way that if the outer
2154	* guest intercept is set we need to intercept it in the nested-guest as
2155	* well.
2156	*
2157	* @param pVCpu The cross context virtual CPU structure.
2158	* @param pVmcbNstGst Pointer to the nested-guest VM control block.
2159	* @param pCtx Pointer to the nested-guest-CPU context.
2160	*/
2161	static void hmR0SvmMergeVmcbCtrlsNested(PVMCPU pVCpu, PCPUMCTX pCtx)
2162	{
2163	PVM pVM = pVCpu->CTX_SUFF(pVM);
2164	PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
2165	PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
2166	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2167
2168	/* Merge the guest's CR intercepts into the nested-guest VMCB. */
2169	pVmcbNstGstCtrl->u16InterceptRdCRx \|= pVmcb->ctrl.u16InterceptRdCRx;
2170	pVmcbNstGstCtrl->u16InterceptWrCRx \|= pVmcb->ctrl.u16InterceptWrCRx;
2171
2172	/* Always intercept CR4 writes for tracking PGM mode changes. */
2173	pVmcbNstGstCtrl->u16InterceptWrCRx \|= RT_BIT(4);
2174
2175	/* Without nested paging, intercept CR3 reads and writes as we load shadow page tables. */
2176	if (!pVM->hm.s.fNestedPaging)
2177	{
2178	pVmcbNstGstCtrl->u16InterceptRdCRx \|= RT_BIT(3);
2179	pVmcbNstGstCtrl->u16InterceptWrCRx \|= RT_BIT(3);
2180	}
2181
2182	/** @todo Figure out debugging with nested-guests, till then just intercept
2183	* all DR[0-15] accesses. */
2184	pVmcbNstGstCtrl->u16InterceptRdDRx \|= 0xffff;
2185	pVmcbNstGstCtrl->u16InterceptWrDRx \|= 0xffff;
2186
2187	/*
2188	* Merge the guest's exception intercepts into the nested-guest VMCB.
2189	*
2190	* - \#UD: Exclude these as the outer guest's GIM hypercalls are not applicable
2191	* while executing the nested-guest.
2192	*
2193	* - \#BP: Exclude breakpoints set by the VM debugger for the outer guest. This can
2194	* be tweaked later depending on how we wish to implement breakpoints.
2195	*
2196	* Warning!! This ASSUMES we only intercept \#UD for hypercall purposes and \#BP
2197	* for VM debugger breakpoints, see hmR0SvmLoadGuestXcptIntercepts.
2198	*/
2199	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
2200	pVmcbNstGstCtrl->u32InterceptXcpt \|= (pVmcb->ctrl.u32InterceptXcpt & ~( RT_BIT(X86_XCPT_UD)
2201	\| RT_BIT(X86_XCPT_BP)));
2202	#else
2203	pVmcbNstGstCtrl->u32InterceptXcpt \|= pVmcb->ctrl.u32InterceptXcpt;
2204	#endif
2205
2206	/*
2207	* Adjust intercepts while executing the nested-guest that differ from the
2208	* outer guest intercepts.
2209	*
2210	* - VINTR: Exclude the outer guest intercept as we don't need to cause VINTR #VMEXITs
2211	* that belong to the nested-guest to the outer guest.
2212	*
2213	* - VMMCALL: Exclude the outer guest intercept as when it's also not intercepted by
2214	* the nested-guest, the physical CPU raises a \#UD exception as expected.
2215	*/
2216	pVmcbNstGstCtrl->u64InterceptCtrl \|= (pVmcb->ctrl.u64InterceptCtrl & ~( SVM_CTRL_INTERCEPT_VINTR
2217	\| SVM_CTRL_INTERCEPT_VMMCALL))
2218	\| HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS;
2219
2220	Assert( (pVmcbNstGstCtrl->u64InterceptCtrl & HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS)
2221	== HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS);
2222
2223	/* Finally, update the VMCB clean bits. */
2224	pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2225	}
2226	#endif
2227
2228
2229	/**
2230	* Sets up the appropriate function to run guest code.
2231	*
2232	* @returns VBox status code.
2233	* @param pVCpu The cross context virtual CPU structure.
2234	*
2235	* @remarks No-long-jump zone!!!
2236	*/
2237	static int hmR0SvmSetupVMRunHandler(PVMCPU pVCpu)
2238	{
2239	if (CPUMIsGuestInLongMode(pVCpu))
2240	{
2241	#ifndef VBOX_ENABLE_64_BITS_GUESTS
2242	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
2243	#endif
2244	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fAllow64BitGuests); /* Guaranteed by hmR3InitFinalizeR0(). */
2245	#if HC_ARCH_BITS == 32
2246	/* 32-bit host. We need to switch to 64-bit before running the 64-bit guest. */
2247	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
2248	#else
2249	/* 64-bit host or hybrid host. */
2250	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun64;
2251	#endif
2252	}
2253	else
2254	{
2255	/* Guest is not in long mode, use the 32-bit handler. */
2256	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun;
2257	}
2258	return VINF_SUCCESS;
2259	}
2260
2261
2262	/**
2263	* Enters the AMD-V session.
2264	*
2265	* @returns VBox status code.
2266	* @param pVM The cross context VM structure.
2267	* @param pVCpu The cross context virtual CPU structure.
2268	* @param pCpu Pointer to the CPU info struct.
2269	*/
2270	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHMGLOBALCPUINFO pCpu)
2271	{
2272	AssertPtr(pVM);
2273	AssertPtr(pVCpu);
2274	Assert(pVM->hm.s.svm.fSupported);
2275	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2276	NOREF(pVM); NOREF(pCpu);
2277
2278	LogFlowFunc(("pVM=%p pVCpu=%p\n", pVM, pVCpu));
2279	Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE));
2280
2281	pVCpu->hm.s.fLeaveDone = false;
2282	return VINF_SUCCESS;
2283	}
2284
2285
2286	/**
2287	* Thread-context callback for AMD-V.
2288	*
2289	* @param enmEvent The thread-context event.
2290	* @param pVCpu The cross context virtual CPU structure.
2291	* @param fGlobalInit Whether global VT-x/AMD-V init. is used.
2292	* @thread EMT(pVCpu)
2293	*/
2294	VMMR0DECL(void) SVMR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPU pVCpu, bool fGlobalInit)
2295	{
2296	NOREF(fGlobalInit);
2297
2298	switch (enmEvent)
2299	{
2300	case RTTHREADCTXEVENT_OUT:
2301	{
2302	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2303	Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
2304	VMCPU_ASSERT_EMT(pVCpu);
2305
2306	/* No longjmps (log-flush, locks) in this fragile context. */
2307	VMMRZCallRing3Disable(pVCpu);
2308
2309	if (!pVCpu->hm.s.fLeaveDone)
2310	{
2311	hmR0SvmLeave(pVCpu);
2312	pVCpu->hm.s.fLeaveDone = true;
2313	}
2314
2315	/* Leave HM context, takes care of local init (term). */
2316	int rc = HMR0LeaveCpu(pVCpu);
2317	AssertRC(rc); NOREF(rc);
2318
2319	/* Restore longjmp state. */
2320	VMMRZCallRing3Enable(pVCpu);
2321	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatSwitchPreempt);
2322	break;
2323	}
2324
2325	case RTTHREADCTXEVENT_IN:
2326	{
2327	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2328	Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
2329	VMCPU_ASSERT_EMT(pVCpu);
2330
2331	/* No longjmps (log-flush, locks) in this fragile context. */
2332	VMMRZCallRing3Disable(pVCpu);
2333
2334	/*
2335	* Initialize the bare minimum state required for HM. This takes care of
2336	* initializing AMD-V if necessary (onlined CPUs, local init etc.)
2337	*/
2338	int rc = HMR0EnterCpu(pVCpu);
2339	AssertRC(rc); NOREF(rc);
2340	Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE));
2341
2342	pVCpu->hm.s.fLeaveDone = false;
2343
2344	/* Restore longjmp state. */
2345	VMMRZCallRing3Enable(pVCpu);
2346	break;
2347	}
2348
2349	default:
2350	break;
2351	}
2352	}
2353
2354
2355	/**
2356	* Saves the host state.
2357	*
2358	* @returns VBox status code.
2359	* @param pVM The cross context VM structure.
2360	* @param pVCpu The cross context virtual CPU structure.
2361	*
2362	* @remarks No-long-jump zone!!!
2363	*/
2364	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
2365	{
2366	NOREF(pVM);
2367	NOREF(pVCpu);
2368	/* Nothing to do here. AMD-V does this for us automatically during the world-switch. */
2369	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT);
2370	return VINF_SUCCESS;
2371	}
2372
2373
2374	/**
2375	* Loads the guest state into the VMCB.
2376	*
2377	* The CPU state will be loaded from these fields on every successful VM-entry.
2378	* Also sets up the appropriate VMRUN function to execute guest code based on
2379	* the guest CPU mode.
2380	*
2381	* @returns VBox status code.
2382	* @param pVM The cross context VM structure.
2383	* @param pVCpu The cross context virtual CPU structure.
2384	* @param pCtx Pointer to the guest-CPU context.
2385	*
2386	* @remarks No-long-jump zone!!!
2387	*/
2388	static int hmR0SvmLoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2389	{
2390	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
2391
2392	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
2393	AssertMsgReturn(pVmcb, ("Invalid pVmcb\n"), VERR_SVM_INVALID_PVMCB);
2394
2395	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
2396
2397	int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcb, pCtx);
2398	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestControlRegs! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
2399
2400	hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcb, pCtx);
2401	hmR0SvmLoadGuestMsrs(pVCpu, pVmcb, pCtx);
2402
2403	pVmcb->guest.u64RIP = pCtx->rip;
2404	pVmcb->guest.u64RSP = pCtx->rsp;
2405	pVmcb->guest.u64RFlags = pCtx->eflags.u32;
2406	pVmcb->guest.u64RAX = pCtx->rax;
2407
2408	#ifdef VBOX_WITH_NESTED_HWVIRT
2409	if (pVmcb->ctrl.IntCtrl.n.u1VGifEnable)
2410	{
2411	Assert(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VGIF);
2412	pVmcb->ctrl.IntCtrl.n.u1VGif = pCtx->hwvirt.fGif;
2413	}
2414	#endif
2415
2416	rc = hmR0SvmLoadGuestApicState(pVCpu, pVmcb, pCtx);
2417	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestApicState! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
2418
2419	hmR0SvmLoadGuestXcptIntercepts(pVCpu, pVmcb, pCtx);
2420
2421	rc = hmR0SvmSetupVMRunHandler(pVCpu);
2422	AssertLogRelMsgRCReturn(rc, ("hmR0SvmSetupVMRunHandler! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
2423
2424	/* Clear any unused and reserved bits. */
2425	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
2426	\| HM_CHANGED_GUEST_RSP
2427	\| HM_CHANGED_GUEST_RFLAGS
2428	\| HM_CHANGED_GUEST_SYSENTER_CS_MSR
2429	\| HM_CHANGED_GUEST_SYSENTER_EIP_MSR
2430	\| HM_CHANGED_GUEST_SYSENTER_ESP_MSR
2431	\| HM_CHANGED_GUEST_HWVIRT /* Unused. */
2432	\| HM_CHANGED_VMM_GUEST_LAZY_MSRS
2433	\| HM_CHANGED_SVM_RESERVED1 /* Reserved. */
2434	\| HM_CHANGED_SVM_RESERVED2
2435	\| HM_CHANGED_SVM_RESERVED3
2436	\| HM_CHANGED_SVM_RESERVED4);
2437
2438	/* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
2439	AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
2440	\|\| HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE),
2441	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
2442
2443	#ifdef VBOX_STRICT
2444	hmR0SvmLogState(pVCpu, pVmcb, pCtx, "hmR0SvmLoadGuestState", 0 /* fFlags /, 0 / uVerbose */);
2445	#endif
2446	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
2447	return rc;
2448	}
2449
2450
2451	#ifdef VBOX_WITH_NESTED_HWVIRT
2452	/**
2453	* Merges the guest and nested-guest MSR permission bitmap.
2454	*
2455	* If the guest is intercepting an MSR we need to intercept it regardless of
2456	* whether the nested-guest is intercepting it or not.
2457	*
2458	* @param pHostCpu Pointer to the physical CPU HM info. struct.
2459	* @param pVCpu The cross context virtual CPU structure.
2460	* @param pCtx Pointer to the nested-guest-CPU context.
2461	*/
2462	static void hmR0SvmMergeMsrpmNested(PHMGLOBALCPUINFO pHostCpu, PVMCPU pVCpu, PCPUMCTX pCtx)
2463	{
2464	uint64_t const pu64GstMsrpm = (uint64_t const )pVCpu->hm.s.svm.pvMsrBitmap;
2465	uint64_t const pu64NstGstMsrpm = (uint64_t const )pCtx->hwvirt.svm.CTX_SUFF(pvMsrBitmap);
2466	uint64_t pu64DstMsrpm = (uint64_t )pHostCpu->n.svm.pvNstGstMsrpm;
2467
2468	/* MSRPM bytes from offset 0x1800 are reserved, so we stop merging there. */
2469	uint32_t const offRsvdQwords = 0x1800 >> 3;
2470	for (uint32_t i = 0; i < offRsvdQwords; i++)
2471	pu64DstMsrpm[i] = pu64NstGstMsrpm[i] \| pu64GstMsrpm[i];
2472	}
2473
2474
2475	/**
2476	* Caches the nested-guest VMCB fields before we modify them for execution using
2477	* hardware-assisted SVM.
2478	*
2479	* @returns true if the VMCB was previously already cached, false otherwise.
2480	* @param pCtx Pointer to the guest-CPU context.
2481	*
2482	* @sa HMSvmNstGstVmExitNotify.
2483	*/
2484	static bool hmR0SvmCacheVmcbNested(PVMCPU pVCpu, PCPUMCTX pCtx)
2485	{
2486	/*
2487	* Cache the nested-guest programmed VMCB fields if we have not cached it yet.
2488	* Otherwise we risk re-caching the values we may have modified, see @bugref{7243#c44}.
2489	*
2490	* Nested-paging CR3 is not saved back into the VMCB on #VMEXIT, hence no need to
2491	* cache and restore it, see AMD spec. 15.25.4 "Nested Paging and VMRUN/#VMEXIT".
2492	*/
2493	bool const fWasCached = pCtx->hwvirt.svm.fHMCachedVmcb;
2494	if (!fWasCached)
2495	{
2496	PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
2497	PCSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2498	PSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
2499
2500	pVmcbNstGstCache->u16InterceptRdCRx = pVmcbNstGstCtrl->u16InterceptRdCRx;
2501	pVmcbNstGstCache->u16InterceptWrCRx = pVmcbNstGstCtrl->u16InterceptWrCRx;
2502	pVmcbNstGstCache->u16InterceptRdDRx = pVmcbNstGstCtrl->u16InterceptRdDRx;
2503	pVmcbNstGstCache->u16InterceptWrDRx = pVmcbNstGstCtrl->u16InterceptWrDRx;
2504	pVmcbNstGstCache->u16PauseFilterThreshold = pVmcbNstGstCtrl->u16PauseFilterThreshold;
2505	pVmcbNstGstCache->u16PauseFilterCount = pVmcbNstGstCtrl->u16PauseFilterCount;
2506	pVmcbNstGstCache->u32InterceptXcpt = pVmcbNstGstCtrl->u32InterceptXcpt;
2507	pVmcbNstGstCache->u64InterceptCtrl = pVmcbNstGstCtrl->u64InterceptCtrl;
2508	pVmcbNstGstCache->u64TSCOffset = pVmcbNstGstCtrl->u64TSCOffset;
2509	pVmcbNstGstCache->fVIntrMasking = pVmcbNstGstCtrl->IntCtrl.n.u1VIntrMasking;
2510	pVmcbNstGstCache->fNestedPaging = pVmcbNstGstCtrl->NestedPagingCtrl.n.u1NestedPaging;
2511	pVmcbNstGstCache->fLbrVirt = pVmcbNstGstCtrl->LbrVirt.n.u1LbrVirt;
2512	pCtx->hwvirt.svm.fHMCachedVmcb = true;
2513	Log4(("hmR0SvmCacheVmcbNested: Cached VMCB fields\n"));
2514	}
2515
2516	return fWasCached;
2517	}
2518
2519
2520	/**
2521	* Sets up the nested-guest VMCB for execution using hardware-assisted SVM.
2522	*
2523	* This is done the first time we enter nested-guest execution using SVM R0
2524	* until the nested-guest \#VMEXIT (not to be confused with physical CPU
2525	* \#VMEXITs which may or may not cause a corresponding nested-guest \#VMEXIT).
2526	*
2527	* @param pVCpu The cross context virtual CPU structure.
2528	* @param pCtx Pointer to the nested-guest-CPU context.
2529	*/
2530	static void hmR0SvmSetupVmcbNested(PVMCPU pVCpu, PCPUMCTX pCtx)
2531	{
2532	PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
2533	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
2534
2535	/*
2536	* First cache the nested-guest VMCB fields we may potentially modify.
2537	*/
2538	bool const fVmcbCached = hmR0SvmCacheVmcbNested(pVCpu, pCtx);
2539	if (!fVmcbCached)
2540	{
2541	/*
2542	* The IOPM of the nested-guest can be ignored because the the guest always
2543	* intercepts all IO port accesses. Thus, we'll swap to the guest IOPM rather
2544	* than the nested-guest IOPM and swap the field back on the #VMEXIT.
2545	*/
2546	pVmcbNstGstCtrl->u64IOPMPhysAddr = g_HCPhysIOBitmap;
2547
2548	/*
2549	* Use the same nested-paging as the outer guest. We can't dynamically switch off
2550	* nested-paging suddenly while executing a VM (see assertion at the end of
2551	* Trap0eHandler() in PGMAllBth.h).
2552	*/
2553	pVmcbNstGstCtrl->NestedPagingCtrl.n.u1NestedPaging = pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging;
2554
2555	/* Always enable V_INTR_MASKING as we do not want to allow access to the physical APIC TPR. */
2556	pVmcbNstGstCtrl->IntCtrl.n.u1VIntrMasking = 1;
2557
2558	#ifdef DEBUG_ramshankar
2559	/* For debugging purposes - copy the LBR info. from outer guest VMCB. */
2560	pVmcbNstGstCtrl->LbrVirt.n.u1LbrVirt = pVmcb->ctrl.LbrVirt.n.u1LbrVirt;
2561	#endif
2562
2563	/*
2564	* If we don't expose Virtualized-VMSAVE/VMLOAD feature to the outer guest, we
2565	* need to intercept VMSAVE/VMLOAD instructions executed by the nested-guest.
2566	*/
2567	if (!pVCpu->CTX_SUFF(pVM)->cpum.ro.GuestFeatures.fSvmVirtVmsaveVmload)
2568	pVmcbNstGstCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_VMSAVE
2569	\| SVM_CTRL_INTERCEPT_VMLOAD;
2570
2571	/*
2572	* If we don't expose Virtual GIF feature to the outer guest, we need to intercept
2573	* CLGI/STGI instructions executed by the nested-guest.
2574	*/
2575	if (!pVCpu->CTX_SUFF(pVM)->cpum.ro.GuestFeatures.fSvmVGif)
2576	pVmcbNstGstCtrl->u64InterceptCtrl \|= SVM_CTRL_INTERCEPT_CLGI
2577	\| SVM_CTRL_INTERCEPT_STGI;
2578
2579	/* Merge the guest and nested-guest intercepts. */
2580	hmR0SvmMergeVmcbCtrlsNested(pVCpu, pCtx);
2581
2582	/* Update the VMCB clean bits. */
2583	pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2584	}
2585	else
2586	{
2587	Assert(pVmcbNstGstCtrl->u64IOPMPhysAddr == g_HCPhysIOBitmap);
2588	Assert(RT_BOOL(pVmcbNstGstCtrl->NestedPagingCtrl.n.u1NestedPaging) == pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
2589	}
2590	}
2591
2592
2593	/**
2594	* Loads the nested-guest state into the VMCB.
2595	*
2596	* @returns VBox status code.
2597	* @param pVCpu The cross context virtual CPU structure.
2598	* @param pCtx Pointer to the guest-CPU context.
2599	*
2600	* @remarks No-long-jump zone!!!
2601	*/
2602	static int hmR0SvmLoadGuestStateNested(PVMCPU pVCpu, PCPUMCTX pCtx)
2603	{
2604	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
2605
2606	PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
2607	Assert(pVmcbNstGst);
2608
2609	hmR0SvmSetupVmcbNested(pVCpu, pCtx);
2610
2611	int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcbNstGst, pCtx);
2612	AssertRCReturn(rc, rc);
2613
2614	/*
2615	* We need to load the entire state (including FS, GS etc.) as we could be continuing
2616	* to execute the nested-guest at any point (not just immediately after VMRUN) and thus
2617	* the VMCB can possibly be out-of-sync with the actual nested-guest state if it was
2618	* executed in IEM.
2619	*/
2620	hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcbNstGst, pCtx);
2621	hmR0SvmLoadGuestMsrs(pVCpu, pVmcbNstGst, pCtx);
2622	hmR0SvmLoadGuestApicStateNested(pVCpu, pVmcbNstGst);
2623	hmR0SvmLoadGuestHwvirtStateNested(pVCpu, pVmcbNstGst, pCtx);
2624
2625	pVmcbNstGst->guest.u64RIP = pCtx->rip;
2626	pVmcbNstGst->guest.u64RSP = pCtx->rsp;
2627	pVmcbNstGst->guest.u64RFlags = pCtx->eflags.u32;
2628	pVmcbNstGst->guest.u64RAX = pCtx->rax;
2629
2630	#ifdef VBOX_WITH_NESTED_HWVIRT
2631	Assert(!pVmcbNstGst->ctrl.IntCtrl.n.u1VGifEnable); /* Nested VGIF not supported yet. */
2632	#endif
2633
2634	rc = hmR0SvmSetupVMRunHandler(pVCpu);
2635	AssertRCReturn(rc, rc);
2636
2637	/* Clear any unused and reserved bits. */
2638	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
2639	\| HM_CHANGED_GUEST_RSP
2640	\| HM_CHANGED_GUEST_RFLAGS
2641	\| HM_CHANGED_GUEST_SYSENTER_CS_MSR
2642	\| HM_CHANGED_GUEST_SYSENTER_EIP_MSR
2643	\| HM_CHANGED_GUEST_SYSENTER_ESP_MSR
2644	\| HM_CHANGED_VMM_GUEST_XCPT_INTERCEPTS /* Unused. */
2645	\| HM_CHANGED_VMM_GUEST_LAZY_MSRS
2646	\| HM_CHANGED_SVM_RESERVED1 /* Reserved. */
2647	\| HM_CHANGED_SVM_RESERVED2
2648	\| HM_CHANGED_SVM_RESERVED3
2649	\| HM_CHANGED_SVM_RESERVED4);
2650
2651	/* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
2652	AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
2653	\|\| HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE),
2654	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
2655
2656	#ifdef VBOX_STRICT
2657	hmR0SvmLogState(pVCpu, pVmcbNstGst, pCtx, "hmR0SvmLoadGuestStateNested", HMSVM_LOG_ALL, 0 /* uVerbose */);
2658	#endif
2659	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
2660	return rc;
2661	}
2662	#endif /* VBOX_WITH_NESTED_HWVIRT */
2663
2664
2665	/**
2666	* Loads the state shared between the host and guest (or nested-guest) into the
2667	* VMCB.
2668	*
2669	* @param pVCpu The cross context virtual CPU structure.
2670	* @param pVmcb Pointer to the VM control block.
2671	* @param pCtx Pointer to the guest-CPU context.
2672	*
2673	* @remarks No-long-jump zone!!!
2674	*/
2675	static void hmR0SvmLoadSharedState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
2676	{
2677	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2678	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2679
2680	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
2681	{
2682	hmR0SvmLoadSharedCR0(pVCpu, pVmcb, pCtx);
2683	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR0);
2684	}
2685
2686	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
2687	{
2688	/** @todo Figure out stepping with nested-guest. */
2689	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
2690	hmR0SvmLoadSharedDebugState(pVCpu, pVmcb, pCtx);
2691	else
2692	{
2693	pVmcb->guest.u64DR6 = pCtx->dr[6];
2694	pVmcb->guest.u64DR7 = pCtx->dr[7];
2695	Log4(("hmR0SvmLoadSharedState: DR6=%#RX64 DR7=%#RX64\n", pCtx->dr[6], pCtx->dr[7]));
2696	}
2697
2698	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_DEBUG);
2699	}
2700
2701	/* Unused on AMD-V (no lazy MSRs). */
2702	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_VMM_GUEST_LAZY_MSRS);
2703
2704	AssertMsg(!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE),
2705	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
2706	}
2707
2708
2709	/**
2710	* Saves the guest (or nested-guest) state from the VMCB into the guest-CPU
2711	* context.
2712	*
2713	* Currently there is no residual state left in the CPU that is not updated in the
2714	* VMCB.
2715	*
2716	* @returns VBox status code.
2717	* @param pVCpu The cross context virtual CPU structure.
2718	* @param pMixedCtx Pointer to the guest-CPU or nested-guest-CPU
2719	* context. The data may be out-of-sync. Make sure to
2720	* update the required fields before using them.
2721	* @param pVmcb Pointer to the VM control block.
2722	*/
2723	static void hmR0SvmSaveGuestState(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PCSVMVMCB pVmcb)
2724	{
2725	Assert(VMMRZCallRing3IsEnabled(pVCpu));
2726
2727	pMixedCtx->rip = pVmcb->guest.u64RIP;
2728	pMixedCtx->rsp = pVmcb->guest.u64RSP;
2729	pMixedCtx->eflags.u32 = pVmcb->guest.u64RFlags;
2730	pMixedCtx->rax = pVmcb->guest.u64RAX;
2731
2732	PCSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
2733	#ifdef VBOX_WITH_NESTED_HWVIRT
2734	if (!CPUMIsGuestInSvmNestedHwVirtMode(pMixedCtx))
2735	{
2736	if (pVmcbCtrl->IntCtrl.n.u1VGifEnable)
2737	{
2738	/*
2739	* Guest Virtual GIF (Global Interrupt Flag).
2740	* We don't yet support passing VGIF feature to the guest.
2741	*/
2742	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.svm.fVGif);
2743	pMixedCtx->hwvirt.fGif = pVmcbCtrl->IntCtrl.n.u1VGif;
2744	}
2745	}
2746	else
2747	{
2748	/*
2749	* Nested-guest interrupt pending.
2750	* Sync nested-guest's V_IRQ and its force-flag.
2751	*/
2752	if ( !pVmcbCtrl->IntCtrl.n.u1VIrqPending
2753	&& VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST))
2754	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST);
2755	}
2756	#endif
2757
2758	/*
2759	* Guest interrupt shadow.
2760	*/
2761	if (pVmcbCtrl->IntShadow.n.u1IntShadow)
2762	EMSetInhibitInterruptsPC(pVCpu, pMixedCtx->rip);
2763	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
2764	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
2765
2766	/*
2767	* Guest control registers: CR0, CR2, CR3 (handled at the end).
2768	* Accesses to other control registers are always intercepted.
2769	*/
2770	pMixedCtx->cr2 = pVmcb->guest.u64CR2;
2771
2772	/* If we're not intercepting changes to CR0 TS & MP bits, sync those bits here. */
2773	if (!(pVmcbCtrl->u16InterceptWrCRx & RT_BIT(0)))
2774	{
2775	pMixedCtx->cr0 = (pMixedCtx->cr0 & ~(X86_CR0_TS \| X86_CR0_MP))
2776	\| (pVmcb->guest.u64CR0 & (X86_CR0_TS \| X86_CR0_MP));
2777	}
2778
2779	/*
2780	* Guest MSRs.
2781	*/
2782	pMixedCtx->msrSTAR = pVmcb->guest.u64STAR; /* legacy syscall eip, cs & ss */
2783	pMixedCtx->msrLSTAR = pVmcb->guest.u64LSTAR; /* 64-bit mode syscall rip */
2784	pMixedCtx->msrCSTAR = pVmcb->guest.u64CSTAR; /* compatibility mode syscall rip */
2785	pMixedCtx->msrSFMASK = pVmcb->guest.u64SFMASK; /* syscall flag mask */
2786	pMixedCtx->msrKERNELGSBASE = pVmcb->guest.u64KernelGSBase; /* swapgs exchange value */
2787	pMixedCtx->SysEnter.cs = pVmcb->guest.u64SysEnterCS;
2788	pMixedCtx->SysEnter.eip = pVmcb->guest.u64SysEnterEIP;
2789	pMixedCtx->SysEnter.esp = pVmcb->guest.u64SysEnterESP;
2790
2791	/*
2792	* Guest segment registers (includes FS, GS base MSRs for 64-bit guests).
2793	*/
2794	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, CS, cs);
2795	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, SS, ss);
2796	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, DS, ds);
2797	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, ES, es);
2798	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, FS, fs);
2799	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, GS, gs);
2800
2801	/*
2802	* Correct the hidden CS granularity bit. Haven't seen it being wrong in any other
2803	* register (yet).
2804	*/
2805	/** @todo SELM might need to be fixed as it too should not care about the
2806	* granularity bit. See @bugref{6785}. */
2807	if ( !pMixedCtx->cs.Attr.n.u1Granularity
2808	&& pMixedCtx->cs.Attr.n.u1Present
2809	&& pMixedCtx->cs.u32Limit > UINT32_C(0xfffff))
2810	{
2811	Assert((pMixedCtx->cs.u32Limit & 0xfff) == 0xfff);
2812	pMixedCtx->cs.Attr.n.u1Granularity = 1;
2813	}
2814
2815	HMSVM_ASSERT_SEG_GRANULARITY(cs);
2816	HMSVM_ASSERT_SEG_GRANULARITY(ss);
2817	HMSVM_ASSERT_SEG_GRANULARITY(ds);
2818	HMSVM_ASSERT_SEG_GRANULARITY(es);
2819	HMSVM_ASSERT_SEG_GRANULARITY(fs);
2820	HMSVM_ASSERT_SEG_GRANULARITY(gs);
2821
2822	/*
2823	* Sync the hidden SS DPL field. AMD CPUs have a separate CPL field in the VMCB and uses that
2824	* and thus it's possible that when the CPL changes during guest execution that the SS DPL
2825	* isn't updated by AMD-V. Observed on some AMD Fusion CPUs with 64-bit guests.
2826	* See AMD spec. 15.5.1 "Basic operation".
2827	*/
2828	Assert(!(pVmcb->guest.u8CPL & ~0x3));
2829	uint8_t const uCpl = pVmcb->guest.u8CPL;
2830	if (pMixedCtx->ss.Attr.n.u2Dpl != uCpl)
2831	{
2832	Log4(("hmR0SvmSaveGuestState: CPL differs. SS.DPL=%u, CPL=%u, overwriting SS.DPL!\n", pMixedCtx->ss.Attr.n.u2Dpl, uCpl));
2833	pMixedCtx->ss.Attr.n.u2Dpl = pVmcb->guest.u8CPL & 0x3;
2834	}
2835
2836	/*
2837	* Guest TR.
2838	* Fixup TR attributes so it's compatible with Intel. Important when saved-states are used
2839	* between Intel and AMD. See @bugref{6208#c39}.
2840	* ASSUME that it's normally correct and that we're in 32-bit or 64-bit mode.
2841	*/
2842	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, TR, tr);
2843	if (pMixedCtx->tr.Attr.n.u4Type != X86_SEL_TYPE_SYS_386_TSS_BUSY)
2844	{
2845	if ( pMixedCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_386_TSS_AVAIL
2846	\|\| CPUMIsGuestInLongModeEx(pMixedCtx))
2847	pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
2848	else if (pMixedCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_286_TSS_AVAIL)
2849	pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_286_TSS_BUSY;
2850	}
2851
2852	/*
2853	* Guest Descriptor-Table registers (GDTR, IDTR, LDTR).
2854	*/
2855	HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, LDTR, ldtr);
2856	pMixedCtx->gdtr.cbGdt = pVmcb->guest.GDTR.u32Limit;
2857	pMixedCtx->gdtr.pGdt = pVmcb->guest.GDTR.u64Base;
2858
2859	pMixedCtx->idtr.cbIdt = pVmcb->guest.IDTR.u32Limit;
2860	pMixedCtx->idtr.pIdt = pVmcb->guest.IDTR.u64Base;
2861
2862	/*
2863	* Guest Debug registers.
2864	*/
2865	if (!pVCpu->hm.s.fUsingHyperDR7)
2866	{
2867	pMixedCtx->dr[6] = pVmcb->guest.u64DR6;
2868	pMixedCtx->dr[7] = pVmcb->guest.u64DR7;
2869	}
2870	else
2871	{
2872	Assert(pVmcb->guest.u64DR7 == CPUMGetHyperDR7(pVCpu));
2873	CPUMSetHyperDR6(pVCpu, pVmcb->guest.u64DR6);
2874	}
2875
2876	/*
2877	* With Nested Paging, CR3 changes are not intercepted. Therefore, sync. it now.
2878	* This is done as the very last step of syncing the guest state, as PGMUpdateCR3() may cause longjmp's to ring-3.
2879	*/
2880	if ( pVmcbCtrl->NestedPagingCtrl.n.u1NestedPaging
2881	&& pMixedCtx->cr3 != pVmcb->guest.u64CR3)
2882	{
2883	CPUMSetGuestCR3(pVCpu, pVmcb->guest.u64CR3);
2884	PGMUpdateCR3(pVCpu, pVmcb->guest.u64CR3);
2885	}
2886
2887	#ifdef VBOX_STRICT
2888	if (CPUMIsGuestInSvmNestedHwVirtMode(pMixedCtx))
2889	hmR0SvmLogState(pVCpu, pVmcb, pMixedCtx, "hmR0SvmSaveGuestStateNested", HMSVM_LOG_ALL & ~HMSVM_LOG_LBR, 0 /* uVerbose */);
2890	#endif
2891	}
2892
2893
2894	/**
2895	* Does the necessary state syncing before returning to ring-3 for any reason
2896	* (longjmp, preemption, voluntary exits to ring-3) from AMD-V.
2897	*
2898	* @param pVCpu The cross context virtual CPU structure.
2899	*
2900	* @remarks No-long-jmp zone!!!
2901	*/
2902	static void hmR0SvmLeave(PVMCPU pVCpu)
2903	{
2904	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2905	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2906	Assert(VMMR0IsLogFlushDisabled(pVCpu));
2907
2908	/*
2909	* !!! IMPORTANT !!!
2910	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
2911	*/
2912
2913	/* Restore host FPU state if necessary and resync on next R0 reentry .*/
2914	if (CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu))
2915	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0); /** @todo r=ramshankar: This shouldn't be necessary, it's set in HMR0EnterCpu. */
2916
2917	/*
2918	* Restore host debug registers if necessary and resync on next R0 reentry.
2919	*/
2920	#ifdef VBOX_STRICT
2921	if (CPUMIsHyperDebugStateActive(pVCpu))
2922	{
2923	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb; /** @todo nested-guest. */
2924	Assert(pVmcb->ctrl.u16InterceptRdDRx == 0xffff);
2925	Assert(pVmcb->ctrl.u16InterceptWrDRx == 0xffff);
2926	}
2927	#endif
2928	if (CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */))
2929	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);/** @todo r=ramshankar: This shouldn't be necessary, it's set in HMR0EnterCpu. */
2930
2931	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
2932	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
2933
2934	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
2935	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatLoadGuestState);
2936	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit1);
2937	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit2);
2938	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
2939
2940	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
2941	}
2942
2943
2944	/**
2945	* Leaves the AMD-V session.
2946	*
2947	* @returns VBox status code.
2948	* @param pVCpu The cross context virtual CPU structure.
2949	*/
2950	static int hmR0SvmLeaveSession(PVMCPU pVCpu)
2951	{
2952	HM_DISABLE_PREEMPT();
2953	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2954	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2955
2956	/* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
2957	and done this from the SVMR0ThreadCtxCallback(). */
2958	if (!pVCpu->hm.s.fLeaveDone)
2959	{
2960	hmR0SvmLeave(pVCpu);
2961	pVCpu->hm.s.fLeaveDone = true;
2962	}
2963
2964	/*
2965	* !!! IMPORTANT !!!
2966	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
2967	*/
2968
2969	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
2970	/* Deregister hook now that we've left HM context before re-enabling preemption. */
2971	VMMR0ThreadCtxHookDisable(pVCpu);
2972
2973	/* Leave HM context. This takes care of local init (term). */
2974	int rc = HMR0LeaveCpu(pVCpu);
2975
2976	HM_RESTORE_PREEMPT();
2977	return rc;
2978	}
2979
2980
2981	/**
2982	* Does the necessary state syncing before doing a longjmp to ring-3.
2983	*
2984	* @returns VBox status code.
2985	* @param pVCpu The cross context virtual CPU structure.
2986	*
2987	* @remarks No-long-jmp zone!!!
2988	*/
2989	static int hmR0SvmLongJmpToRing3(PVMCPU pVCpu)
2990	{
2991	return hmR0SvmLeaveSession(pVCpu);
2992	}
2993
2994
2995	/**
2996	* VMMRZCallRing3() callback wrapper which saves the guest state (or restores
2997	* any remaining host state) before we longjump to ring-3 and possibly get
2998	* preempted.
2999	*
3000	* @param pVCpu The cross context virtual CPU structure.
3001	* @param enmOperation The operation causing the ring-3 longjump.
3002	* @param pvUser The user argument (pointer to the possibly
3003	* out-of-date guest-CPU context).
3004	*/
3005	static DECLCALLBACK(int) hmR0SvmCallRing3Callback(PVMCPU pVCpu, VMMCALLRING3 enmOperation, void *pvUser)
3006	{
3007	RT_NOREF_PV(pvUser);
3008
3009	if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
3010	{
3011	/*
3012	* !!! IMPORTANT !!!
3013	* If you modify code here, make sure to check whether hmR0SvmLeave() and hmR0SvmLeaveSession() needs
3014	* to be updated too. This is a stripped down version which gets out ASAP trying to not trigger any assertion.
3015	*/
3016	VMMRZCallRing3RemoveNotification(pVCpu);
3017	VMMRZCallRing3Disable(pVCpu);
3018	HM_DISABLE_PREEMPT();
3019
3020	/* Restore host FPU state if necessary and resync on next R0 reentry. */
3021	CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
3022
3023	/* Restore host debug registers if necessary and resync on next R0 reentry. */
3024	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
3025
3026	/* Deregister the hook now that we've left HM context before re-enabling preemption. */
3027	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
3028	VMMR0ThreadCtxHookDisable(pVCpu);
3029
3030	/* Leave HM context. This takes care of local init (term). */
3031	HMR0LeaveCpu(pVCpu);
3032
3033	HM_RESTORE_PREEMPT();
3034	return VINF_SUCCESS;
3035	}
3036
3037	Assert(pVCpu);
3038	Assert(pvUser);
3039	Assert(VMMRZCallRing3IsEnabled(pVCpu));
3040	HMSVM_ASSERT_PREEMPT_SAFE();
3041
3042	VMMRZCallRing3Disable(pVCpu);
3043	Assert(VMMR0IsLogFlushDisabled(pVCpu));
3044
3045	Log4(("hmR0SvmCallRing3Callback->hmR0SvmLongJmpToRing3\n"));
3046	int rc = hmR0SvmLongJmpToRing3(pVCpu);
3047	AssertRCReturn(rc, rc);
3048
3049	VMMRZCallRing3Enable(pVCpu);
3050	return VINF_SUCCESS;
3051	}
3052
3053
3054	/**
3055	* Take necessary actions before going back to ring-3.
3056	*
3057	* An action requires us to go back to ring-3. This function does the necessary
3058	* steps before we can safely return to ring-3. This is not the same as longjmps
3059	* to ring-3, this is voluntary.
3060	*
3061	* @returns VBox status code.
3062	* @param pVM The cross context VM structure.
3063	* @param pVCpu The cross context virtual CPU structure.
3064	* @param pCtx Pointer to the guest-CPU context.
3065	* @param rcExit The reason for exiting to ring-3. Can be
3066	* VINF_VMM_UNKNOWN_RING3_CALL.
3067	*/
3068	static int hmR0SvmExitToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, int rcExit)
3069	{
3070	Assert(pVM);
3071	Assert(pVCpu);
3072	Assert(pCtx);
3073	HMSVM_ASSERT_PREEMPT_SAFE();
3074
3075	/* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
3076	VMMRZCallRing3Disable(pVCpu);
3077	Log4(("hmR0SvmExitToRing3: VCPU[%u]: rcExit=%d LocalFF=%#RX32 GlobalFF=%#RX32\n", pVCpu->idCpu, rcExit,
3078	pVCpu->fLocalForcedActions, pVM->fGlobalForcedActions));
3079
3080	/* We need to do this only while truly exiting the "inner loop" back to ring-3 and -not- for any longjmp to ring3. */
3081	if (pVCpu->hm.s.Event.fPending)
3082	{
3083	hmR0SvmPendingEventToTrpmTrap(pVCpu);
3084	Assert(!pVCpu->hm.s.Event.fPending);
3085	}
3086
3087	/* Sync. the necessary state for going back to ring-3. */
3088	hmR0SvmLeaveSession(pVCpu);
3089	STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
3090
3091	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
3092	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
3093	\| CPUM_CHANGED_LDTR
3094	\| CPUM_CHANGED_GDTR
3095	\| CPUM_CHANGED_IDTR
3096	\| CPUM_CHANGED_TR
3097	\| CPUM_CHANGED_HIDDEN_SEL_REGS);
3098	if ( pVM->hm.s.fNestedPaging
3099	&& CPUMIsGuestPagingEnabledEx(pCtx))
3100	{
3101	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
3102	}
3103
3104	/* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
3105	if (rcExit != VINF_EM_RAW_INTERRUPT)
3106	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
3107
3108	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
3109
3110	/* We do -not- want any longjmp notifications after this! We must return to ring-3 ASAP. */
3111	VMMRZCallRing3RemoveNotification(pVCpu);
3112	VMMRZCallRing3Enable(pVCpu);
3113
3114	/*
3115	* If we're emulating an instruction, we shouldn't have any TRPM traps pending
3116	* and if we're injecting an event we should have a TRPM trap pending.
3117	*/
3118	AssertReturnStmt(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT \|\| TRPMHasTrap(pVCpu),
3119	pVCpu->hm.s.u32HMError = rcExit,
3120	VERR_SVM_IPE_5);
3121	AssertReturnStmt(rcExit != VINF_EM_RAW_EMULATE_INSTR \|\| !TRPMHasTrap(pVCpu),
3122	pVCpu->hm.s.u32HMError = rcExit,
3123	VERR_SVM_IPE_4);
3124
3125	return rcExit;
3126	}
3127
3128
3129	/**
3130	* Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
3131	* intercepts.
3132	*
3133	* @param pVM The cross context VM structure.
3134	* @param pVCpu The cross context virtual CPU structure.
3135	* @param pCtx Pointer to the guest-CPU or nested-guest-CPU context.
3136	* @param pVmcb Pointer to the VM control block.
3137	*
3138	* @remarks No-long-jump zone!!!
3139	*/
3140	static void hmR0SvmUpdateTscOffsetting(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb)
3141	{
3142	/*
3143	* Avoid intercepting RDTSC/RDTSCP if we determined the host TSC (++) is stable
3144	* and in case of a nested-guest, if the nested-VMCB specifies it is not intercepting
3145	* RDTSC/RDTSCP as well.
3146	*/
3147	bool fParavirtTsc;
3148	uint64_t uTscOffset;
3149	bool const fCanUseRealTsc = TMCpuTickCanUseRealTSC(pVM, pVCpu, &uTscOffset, &fParavirtTsc);
3150
3151	bool fIntercept;
3152	if (fCanUseRealTsc)
3153	fIntercept = hmR0SvmClearCtrlIntercept(pVCpu, pCtx, pVmcb, SVM_CTRL_INTERCEPT_RDTSC \| SVM_CTRL_INTERCEPT_RDTSCP);
3154	else
3155	{
3156	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_RDTSC \| SVM_CTRL_INTERCEPT_RDTSCP);
3157	fIntercept = true;
3158	}
3159
3160	if (!fIntercept)
3161	{
3162	/* Apply the nested-guest VMCB's TSC offset over the guest TSC offset. */
3163	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
3164	uTscOffset = HMSvmNstGstApplyTscOffset(pVCpu, uTscOffset);
3165
3166	/* Update the TSC offset in the VMCB and the relevant clean bits. */
3167	pVmcb->ctrl.u64TSCOffset = uTscOffset;
3168	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
3169
3170	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
3171	}
3172	else
3173	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
3174
3175	/* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
3176	information before every VM-entry, hence we have nothing to do here at the moment. */
3177	if (fParavirtTsc)
3178	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
3179	}
3180
3181
3182	/**
3183	* Sets an event as a pending event to be injected into the guest.
3184	*
3185	* @param pVCpu The cross context virtual CPU structure.
3186	* @param pEvent Pointer to the SVM event.
3187	* @param GCPtrFaultAddress The fault-address (CR2) in case it's a
3188	* page-fault.
3189	*
3190	* @remarks Statistics counter assumes this is a guest event being reflected to
3191	* the guest i.e. 'StatInjectPendingReflect' is incremented always.
3192	*/
3193	DECLINLINE(void) hmR0SvmSetPendingEvent(PVMCPU pVCpu, PSVMEVENT pEvent, RTGCUINTPTR GCPtrFaultAddress)
3194	{
3195	Assert(!pVCpu->hm.s.Event.fPending);
3196	Assert(pEvent->n.u1Valid);
3197
3198	pVCpu->hm.s.Event.u64IntInfo = pEvent->u;
3199	pVCpu->hm.s.Event.fPending = true;
3200	pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
3201
3202	Log4(("hmR0SvmSetPendingEvent: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
3203	pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
3204	}
3205
3206
3207	/**
3208	* Sets an invalid-opcode (\#UD) exception as pending-for-injection into the VM.
3209	*
3210	* @param pVCpu The cross context virtual CPU structure.
3211	*/
3212	DECLINLINE(void) hmR0SvmSetPendingXcptUD(PVMCPU pVCpu)
3213	{
3214	SVMEVENT Event;
3215	Event.u = 0;
3216	Event.n.u1Valid = 1;
3217	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3218	Event.n.u8Vector = X86_XCPT_UD;
3219	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3220	}
3221
3222
3223	/**
3224	* Sets a debug (\#DB) exception as pending-for-injection into the VM.
3225	*
3226	* @param pVCpu The cross context virtual CPU structure.
3227	*/
3228	DECLINLINE(void) hmR0SvmSetPendingXcptDB(PVMCPU pVCpu)
3229	{
3230	SVMEVENT Event;
3231	Event.u = 0;
3232	Event.n.u1Valid = 1;
3233	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3234	Event.n.u8Vector = X86_XCPT_DB;
3235	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3236	}
3237
3238
3239	/**
3240	* Sets a page fault (\#PF) exception as pending-for-injection into the VM.
3241	*
3242	* @param pVCpu The cross context virtual CPU structure.
3243	* @param pCtx Pointer to the guest-CPU context.
3244	* @param u32ErrCode The error-code for the page-fault.
3245	* @param uFaultAddress The page fault address (CR2).
3246	*
3247	* @remarks This updates the guest CR2 with @a uFaultAddress!
3248	*/
3249	DECLINLINE(void) hmR0SvmSetPendingXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t u32ErrCode, RTGCUINTPTR uFaultAddress)
3250	{
3251	SVMEVENT Event;
3252	Event.u = 0;
3253	Event.n.u1Valid = 1;
3254	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3255	Event.n.u8Vector = X86_XCPT_PF;
3256	Event.n.u1ErrorCodeValid = 1;
3257	Event.n.u32ErrorCode = u32ErrCode;
3258
3259	/* Update CR2 of the guest. */
3260	if (pCtx->cr2 != uFaultAddress)
3261	{
3262	pCtx->cr2 = uFaultAddress;
3263	/* The VMCB clean bit for CR2 will be updated while re-loading the guest state. */
3264	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR2);
3265	}
3266
3267	hmR0SvmSetPendingEvent(pVCpu, &Event, uFaultAddress);
3268	}
3269
3270
3271	/**
3272	* Sets a math-fault (\#MF) exception as pending-for-injection into the VM.
3273	*
3274	* @param pVCpu The cross context virtual CPU structure.
3275	*/
3276	DECLINLINE(void) hmR0SvmSetPendingXcptMF(PVMCPU pVCpu)
3277	{
3278	SVMEVENT Event;
3279	Event.u = 0;
3280	Event.n.u1Valid = 1;
3281	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3282	Event.n.u8Vector = X86_XCPT_MF;
3283	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3284	}
3285
3286
3287	/**
3288	* Sets a double fault (\#DF) exception as pending-for-injection into the VM.
3289	*
3290	* @param pVCpu The cross context virtual CPU structure.
3291	*/
3292	DECLINLINE(void) hmR0SvmSetPendingXcptDF(PVMCPU pVCpu)
3293	{
3294	SVMEVENT Event;
3295	Event.u = 0;
3296	Event.n.u1Valid = 1;
3297	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3298	Event.n.u8Vector = X86_XCPT_DF;
3299	Event.n.u1ErrorCodeValid = 1;
3300	Event.n.u32ErrorCode = 0;
3301	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3302	}
3303
3304
3305	/**
3306	* Injects an event into the guest upon VMRUN by updating the relevant field
3307	* in the VMCB.
3308	*
3309	* @param pVCpu The cross context virtual CPU structure.
3310	* @param pVmcb Pointer to the guest VM control block.
3311	* @param pCtx Pointer to the guest-CPU context.
3312	* @param pEvent Pointer to the event.
3313	*
3314	* @remarks No-long-jump zone!!!
3315	* @remarks Requires CR0!
3316	*/
3317	DECLINLINE(void) hmR0SvmInjectEventVmcb(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx, PSVMEVENT pEvent)
3318	{
3319	NOREF(pVCpu); NOREF(pCtx);
3320
3321	Assert(!pVmcb->ctrl.EventInject.n.u1Valid);
3322	pVmcb->ctrl.EventInject.u = pEvent->u;
3323	STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
3324
3325	Log4(("hmR0SvmInjectEventVmcb: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
3326	pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
3327	}
3328
3329
3330
3331	/**
3332	* Converts any TRPM trap into a pending HM event. This is typically used when
3333	* entering from ring-3 (not longjmp returns).
3334	*
3335	* @param pVCpu The cross context virtual CPU structure.
3336	*/
3337	static void hmR0SvmTrpmTrapToPendingEvent(PVMCPU pVCpu)
3338	{
3339	Assert(TRPMHasTrap(pVCpu));
3340	Assert(!pVCpu->hm.s.Event.fPending);
3341
3342	uint8_t uVector;
3343	TRPMEVENT enmTrpmEvent;
3344	RTGCUINT uErrCode;
3345	RTGCUINTPTR GCPtrFaultAddress;
3346	uint8_t cbInstr;
3347
3348	int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr);
3349	AssertRC(rc);
3350
3351	SVMEVENT Event;
3352	Event.u = 0;
3353	Event.n.u1Valid = 1;
3354	Event.n.u8Vector = uVector;
3355
3356	/* Refer AMD spec. 15.20 "Event Injection" for the format. */
3357	if (enmTrpmEvent == TRPM_TRAP)
3358	{
3359	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3360	switch (uVector)
3361	{
3362	case X86_XCPT_NMI:
3363	{
3364	Event.n.u3Type = SVM_EVENT_NMI;
3365	break;
3366	}
3367
3368	case X86_XCPT_PF:
3369	case X86_XCPT_DF:
3370	case X86_XCPT_TS:
3371	case X86_XCPT_NP:
3372	case X86_XCPT_SS:
3373	case X86_XCPT_GP:
3374	case X86_XCPT_AC:
3375	{
3376	Event.n.u1ErrorCodeValid = 1;
3377	Event.n.u32ErrorCode = uErrCode;
3378	break;
3379	}
3380	}
3381	}
3382	else if (enmTrpmEvent == TRPM_HARDWARE_INT)
3383	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
3384	else if (enmTrpmEvent == TRPM_SOFTWARE_INT)
3385	Event.n.u3Type = SVM_EVENT_SOFTWARE_INT;
3386	else
3387	AssertMsgFailed(("Invalid TRPM event type %d\n", enmTrpmEvent));
3388
3389	rc = TRPMResetTrap(pVCpu);
3390	AssertRC(rc);
3391
3392	Log4(("TRPM->HM event: u=%#RX64 u8Vector=%#x uErrorCodeValid=%RTbool uErrorCode=%#RX32\n", Event.u, Event.n.u8Vector,
3393	!!Event.n.u1ErrorCodeValid, Event.n.u32ErrorCode));
3394
3395	hmR0SvmSetPendingEvent(pVCpu, &Event, GCPtrFaultAddress);
3396	}
3397
3398
3399	/**
3400	* Converts any pending SVM event into a TRPM trap. Typically used when leaving
3401	* AMD-V to execute any instruction.
3402	*
3403	* @param pVCpu The cross context virtual CPU structure.
3404	*/
3405	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu)
3406	{
3407	Assert(pVCpu->hm.s.Event.fPending);
3408	Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo /, NULL / pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
3409
3410	SVMEVENT Event;
3411	Event.u = pVCpu->hm.s.Event.u64IntInfo;
3412
3413	uint8_t uVector = Event.n.u8Vector;
3414	uint8_t uVectorType = Event.n.u3Type;
3415	TRPMEVENT enmTrapType = HMSvmEventToTrpmEventType(&Event);
3416
3417	Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, uVectorType));
3418
3419	int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
3420	AssertRC(rc);
3421
3422	if (Event.n.u1ErrorCodeValid)
3423	TRPMSetErrorCode(pVCpu, Event.n.u32ErrorCode);
3424
3425	if ( uVectorType == SVM_EVENT_EXCEPTION
3426	&& uVector == X86_XCPT_PF)
3427	{
3428	TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
3429	Assert(pVCpu->hm.s.Event.GCPtrFaultAddress == CPUMGetGuestCR2(pVCpu));
3430	}
3431	else if (uVectorType == SVM_EVENT_SOFTWARE_INT)
3432	{
3433	AssertMsg( uVectorType == SVM_EVENT_SOFTWARE_INT
3434	\|\| (uVector == X86_XCPT_BP \|\| uVector == X86_XCPT_OF),
3435	("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
3436	TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
3437	}
3438	pVCpu->hm.s.Event.fPending = false;
3439	}
3440
3441
3442	/**
3443	* Checks if the guest (or nested-guest) has an interrupt shadow active right
3444	* now.
3445	*
3446	* @returns @c true if the interrupt shadow is active, @c false otherwise.
3447	* @param pVCpu The cross context virtual CPU structure.
3448	* @param pCtx Pointer to the guest-CPU context.
3449	*
3450	* @remarks No-long-jump zone!!!
3451	* @remarks Has side-effects with VMCPU_FF_INHIBIT_INTERRUPTS force-flag.
3452	*/
3453	DECLINLINE(bool) hmR0SvmIsIntrShadowActive(PVMCPU pVCpu, PCPUMCTX pCtx)
3454	{
3455	/*
3456	* Instructions like STI and MOV SS inhibit interrupts till the next instruction completes. Check if we should
3457	* inhibit interrupts or clear any existing interrupt-inhibition.
3458	*/
3459	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
3460	{
3461	if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
3462	{
3463	/*
3464	* We can clear the inhibit force flag as even if we go back to the recompiler without executing guest code in
3465	* AMD-V, the flag's condition to be cleared is met and thus the cleared state is correct.
3466	*/
3467	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
3468	return false;
3469	}
3470	return true;
3471	}
3472	return false;
3473	}
3474
3475
3476	/**
3477	* Sets the virtual interrupt intercept control in the VMCB.
3478	*
3479	* @param pVCpu The cross context virtual CPU structure.
3480	* @param pVmcb Pointer to the VM control block.
3481	* @param pCtx Pointer to the guest-CPU context.
3482	*/
3483	DECLINLINE(void) hmR0SvmSetIntWindowExiting(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
3484	{
3485	/*
3486	* When AVIC isn't supported, set up an interrupt window to cause a #VMEXIT when
3487	* the guest is ready to accept interrupts. At #VMEXIT, we then get the interrupt
3488	* from the APIC (updating ISR at the right time) and inject the interrupt.
3489	*
3490	* With AVIC is supported, we could make use of the asynchronously delivery without
3491	* #VMEXIT and we would be passing the AVIC page to SVM.
3492	*
3493	* In AMD-V, an interrupt window is achieved using a combination of
3494	* V_IRQ (an interrupt is pending), V_IGN_TPR (ignore TPR priorities) and the
3495	* VINTR intercept all being set.
3496	*/
3497	#ifdef VBOX_WITH_NESTED_HWVIRT
3498	/*
3499	* Currently we don't overlay interupt windows and if there's any V_IRQ pending
3500	* in the nested-guest VMCB, we avoid setting up any interrupt window on behalf
3501	* of the outer guest.
3502	*/
3503	/** @todo Does this mean we end up prioritizing virtual interrupt
3504	* delivery/window over a physical interrupt (from the outer guest)
3505	* might be pending? */
3506	bool const fEnableIntWindow = !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST);
3507	if (!fEnableIntWindow)
3508	{
3509	Assert(CPUMIsGuestInSvmNestedHwVirtMode(pCtx)); RT_NOREF(pCtx);
3510	Log4(("Nested-guest V_IRQ already pending\n"));
3511	}
3512	#else
3513	RT_NOREF2(pVCpu, pCtx);
3514	bool const fEnableIntWindow = true;
3515	#endif
3516	if (fEnableIntWindow)
3517	{
3518	Assert(pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR);
3519	pVmcb->ctrl.IntCtrl.n.u1VIrqPending = 1;
3520	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INT_CTRL;
3521	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_VINTR);
3522	Log4(("Set VINTR intercept\n"));
3523	}
3524	}
3525
3526
3527	/**
3528	* Clears the virtual interrupt intercept control in the VMCB as
3529	* we are figured the guest is unable process any interrupts
3530	* at this point of time.
3531	*
3532	* @param pVCpu The cross context virtual CPU structure.
3533	* @param pVmcb Pointer to the VM control block.
3534	* @param pCtx Pointer to the guest-CPU context.
3535	*/
3536	DECLINLINE(void) hmR0SvmClearIntWindowExiting(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
3537	{
3538	PSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
3539	if ( pVmcbCtrl->IntCtrl.n.u1VIrqPending
3540	\|\| (pVmcbCtrl->u64InterceptCtrl & SVM_CTRL_INTERCEPT_VINTR))
3541	{
3542	pVmcbCtrl->IntCtrl.n.u1VIrqPending = 0;
3543	pVmcbCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INT_CTRL;
3544	hmR0SvmClearCtrlIntercept(pVCpu, pCtx, pVmcb, SVM_CTRL_INTERCEPT_VINTR);
3545	Log4(("Cleared VINTR intercept\n"));
3546	}
3547	}
3548
3549	#ifdef VBOX_WITH_NESTED_HWVIRT
3550	/**
3551	* Evaluates the event to be delivered to the nested-guest and sets it as the
3552	* pending event.
3553	*
3554	* @returns VBox strict status code.
3555	* @param pVCpu The cross context virtual CPU structure.
3556	* @param pCtx Pointer to the guest-CPU context.
3557	*/
3558	static VBOXSTRICTRC hmR0SvmEvaluatePendingEventNested(PVMCPU pVCpu, PCPUMCTX pCtx)
3559	{
3560	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
3561
3562	Assert(!pVCpu->hm.s.Event.fPending);
3563	Assert(pCtx->hwvirt.fGif);
3564	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
3565	Assert(pVmcb);
3566
3567	bool const fVirtualGif = CPUMGetSvmNstGstVGif(pCtx);
3568	bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu, pCtx);
3569	bool const fBlockNmi = VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS);
3570
3571	Log4Func(("fVirtualGif=%RTbool fBlockNmi=%RTbool fIntShadow=%RTbool Intr. pending=%RTbool NMI pending=%RTbool\n",
3572	fVirtualGif, fBlockNmi, fIntShadow, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC),
3573	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)));
3574
3575	/** @todo SMI. SMIs take priority over NMIs. */
3576
3577	/*
3578	* Check if the guest can receive NMIs.
3579	* Nested NMIs are not allowed, see AMD spec. 8.1.4 "Masking External Interrupts".
3580	* NMIs take priority over maskable interrupts, see AMD spec. 8.5 "Priorities".
3581	*/
3582	if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)
3583	&& !fBlockNmi)
3584	{
3585	if ( fVirtualGif
3586	&& !fIntShadow)
3587	{
3588	if (CPUMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_NMI))
3589	{
3590	Log4(("Intercepting NMI -> #VMEXIT\n"));
3591	return IEMExecSvmVmexit(pVCpu, SVM_EXIT_NMI, 0, 0);
3592	}
3593
3594	Log4(("Setting NMI pending for injection\n"));
3595	SVMEVENT Event;
3596	Event.u = 0;
3597	Event.n.u1Valid = 1;
3598	Event.n.u8Vector = X86_XCPT_NMI;
3599	Event.n.u3Type = SVM_EVENT_NMI;
3600	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3601	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
3602	}
3603	else if (!fVirtualGif)
3604	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3605	else
3606	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb, pCtx);
3607	}
3608	/*
3609	* Check if the nested-guest can receive external interrupts (generated by
3610	* the guest's PIC/APIC).
3611	*
3612	* External intercepts, NMI, SMI etc. from the physical CPU are -always- intercepted
3613	* when executing using hardware-assisted SVM, see HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS.
3614	*
3615	* External interrupts that are generated for the outer guest may be intercepted
3616	* depending on how the nested-guest VMCB was programmed by guest software.
3617	*
3618	* Physical interrupts always take priority over virtual interrupts,
3619	* see AMD spec. 15.21.4 "Injecting Virtual (INTR) Interrupts".
3620	*/
3621	else if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
3622	&& !pVCpu->hm.s.fSingleInstruction)
3623	{
3624	if ( fVirtualGif
3625	&& !fIntShadow
3626	&& CPUMCanSvmNstGstTakePhysIntr(pVCpu, pCtx))
3627	{
3628	if (CPUMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INTR))
3629	{
3630	Log4(("Intercepting INTR -> #VMEXIT\n"));
3631	return IEMExecSvmVmexit(pVCpu, SVM_EXIT_INTR, 0, 0);
3632	}
3633
3634	uint8_t u8Interrupt;
3635	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
3636	if (RT_SUCCESS(rc))
3637	{
3638	Log4(("Setting external interrupt %#x pending for injection\n", u8Interrupt));
3639	SVMEVENT Event;
3640	Event.u = 0;
3641	Event.n.u1Valid = 1;
3642	Event.n.u8Vector = u8Interrupt;
3643	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
3644	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3645	}
3646	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
3647	{
3648	/*
3649	* AMD-V has no TPR thresholding feature. TPR and the force-flag will be
3650	* updated eventually when the TPR is written by the guest.
3651	*/
3652	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
3653	}
3654	else
3655	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
3656	}
3657	else if (!fVirtualGif)
3658	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3659	else
3660	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb, pCtx);
3661	}
3662
3663	return VINF_SUCCESS;
3664	}
3665	#endif
3666
3667	/**
3668	* Evaluates the event to be delivered to the guest and sets it as the pending
3669	* event.
3670	*
3671	* @param pVCpu The cross context virtual CPU structure.
3672	* @param pCtx Pointer to the guest-CPU context.
3673	*/
3674	static void hmR0SvmEvaluatePendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
3675	{
3676	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
3677	Assert(!pVCpu->hm.s.Event.fPending);
3678	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
3679	Assert(pVmcb);
3680
3681	#ifdef VBOX_WITH_NESTED_HWVIRT
3682	bool const fGif = pCtx->hwvirt.fGif;
3683	#else
3684	bool const fGif = true;
3685	#endif
3686	bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu, pCtx);
3687	bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
3688	bool const fBlockNmi = VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS);
3689
3690	Log4Func(("fGif=%RTbool fBlockNmi=%RTbool fBlockInt=%RTbool fIntShadow=%RTbool Intr. pending=%RTbool NMI pending=%RTbool\n",
3691	fGif, fBlockNmi, fBlockInt, fIntShadow,
3692	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC),
3693	VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)));
3694
3695	/** @todo SMI. SMIs take priority over NMIs. */
3696
3697	/*
3698	* Check if the guest can receive NMIs.
3699	* Nested NMIs are not allowed, see AMD spec. 8.1.4 "Masking External Interrupts".
3700	* NMIs take priority over maskable interrupts, see AMD spec. 8.5 "Priorities".
3701	*/
3702	if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)
3703	&& !fBlockNmi)
3704	{
3705	if ( fGif
3706	&& !fIntShadow)
3707	{
3708	Log4(("Setting NMI pending for injection\n"));
3709	SVMEVENT Event;
3710	Event.u = 0;
3711	Event.n.u1Valid = 1;
3712	Event.n.u8Vector = X86_XCPT_NMI;
3713	Event.n.u3Type = SVM_EVENT_NMI;
3714	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3715	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
3716	}
3717	else if (!fGif)
3718	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3719	else
3720	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb, pCtx);
3721	}
3722	/*
3723	* Check if the guest can receive external interrupts (PIC/APIC). Once PDMGetInterrupt() returns
3724	* a valid interrupt we -must- deliver the interrupt. We can no longer re-request it from the APIC.
3725	*/
3726	else if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
3727	&& !pVCpu->hm.s.fSingleInstruction)
3728	{
3729	if ( fGif
3730	&& !fBlockInt
3731	&& !fIntShadow)
3732	{
3733	uint8_t u8Interrupt;
3734	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
3735	if (RT_SUCCESS(rc))
3736	{
3737	Log4(("Setting external interrupt %#x pending for injection\n", u8Interrupt));
3738	SVMEVENT Event;
3739	Event.u = 0;
3740	Event.n.u1Valid = 1;
3741	Event.n.u8Vector = u8Interrupt;
3742	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
3743	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3744	}
3745	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
3746	{
3747	/*
3748	* AMD-V has no TPR thresholding feature. TPR and the force-flag will be
3749	* updated eventually when the TPR is written by the guest.
3750	*/
3751	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
3752	}
3753	else
3754	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
3755	}
3756	else if (!fGif)
3757	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_STGI);
3758	else
3759	hmR0SvmSetIntWindowExiting(pVCpu, pVmcb, pCtx);
3760	}
3761	}
3762
3763
3764	/**
3765	* Injects any pending events into the guest (or nested-guest).
3766	*
3767	* @param pVCpu The cross context virtual CPU structure.
3768	* @param pCtx Pointer to the guest-CPU context.
3769	* @param pVmcb Pointer to the VM control block.
3770	*
3771	* @remarks Must only be called when we are guaranteed to enter
3772	* hardware-assisted SVM execution and not return to ring-3
3773	* prematurely.
3774	*/
3775	static void hmR0SvmInjectPendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb)
3776	{
3777	Assert(!TRPMHasTrap(pVCpu));
3778	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3779
3780	bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu, pCtx);
3781	#ifdef VBOX_STRICT
3782	bool const fGif = pCtx->hwvirt.fGif;
3783	bool fAllowInt = fGif;
3784	if (fGif)
3785	{
3786	/*
3787	* For nested-guests we have no way to determine if we're injecting a physical or virtual
3788	* interrupt at this point. Hence the partial verification below.
3789	*/
3790	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
3791	fAllowInt = CPUMCanSvmNstGstTakePhysIntr(pVCpu, pCtx) \|\| CPUMCanSvmNstGstTakeVirtIntr(pVCpu, pCtx);
3792	else
3793	fAllowInt = RT_BOOL(pCtx->eflags.u32 & X86_EFL_IF);
3794	}
3795	#endif
3796
3797	if (pVCpu->hm.s.Event.fPending)
3798	{
3799	SVMEVENT Event;
3800	Event.u = pVCpu->hm.s.Event.u64IntInfo;
3801	Assert(Event.n.u1Valid);
3802
3803	/*
3804	* Validate event injection pre-conditions.
3805	*/
3806	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
3807	{
3808	Assert(fAllowInt);
3809	Assert(!fIntShadow);
3810	}
3811	else if (Event.n.u3Type == SVM_EVENT_NMI)
3812	{
3813	Assert(fGif);
3814	Assert(!fIntShadow);
3815	}
3816
3817	/*
3818	* Before injecting an NMI we must set VMCPU_FF_BLOCK_NMIS to prevent nested NMIs. We do this only
3819	* when we are surely going to inject the NMI as otherwise if we return to ring-3 prematurely we
3820	* could leave NMIs blocked indefinitely upon re-entry into SVM R0.
3821	*
3822	* With VT-x, this is handled by the Guest interruptibility information VMCS field which will set
3823	* the VMCS field after actually delivering the NMI which we read on VM-exit to determine the state.
3824	*/
3825	if ( Event.n.u3Type == SVM_EVENT_NMI
3826	&& Event.n.u8Vector == X86_XCPT_NMI
3827	&& !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
3828	{
3829	VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
3830	}
3831
3832	/*
3833	* Inject it (update VMCB for injection by the hardware).
3834	*/
3835	Log4(("Injecting pending HM event\n"));
3836	hmR0SvmInjectEventVmcb(pVCpu, pVmcb, pCtx, &Event);
3837	pVCpu->hm.s.Event.fPending = false;
3838
3839	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
3840	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
3841	else
3842	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
3843	}
3844	else
3845	Assert(pVmcb->ctrl.EventInject.n.u1Valid == 0);
3846
3847	/*
3848	* We could have injected an NMI through IEM and continue guest execution using
3849	* hardware-assisted SVM. In which case, we would not have any events pending (above)
3850	* but we still need to intercept IRET in order to eventually clear NMI inhibition.
3851	*/
3852	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
3853	hmR0SvmSetCtrlIntercept(pVmcb, SVM_CTRL_INTERCEPT_IRET);
3854
3855	/*
3856	* Update the guest interrupt shadow in the guest (or nested-guest) VMCB.
3857	*
3858	* For nested-guests: We need to update it too for the scenario where IEM executes
3859	* the nested-guest but execution later continues here with an interrupt shadow active.
3860	*/
3861	pVmcb->ctrl.IntShadow.n.u1IntShadow = fIntShadow;
3862	}
3863
3864
3865	/**
3866	* Reports world-switch error and dumps some useful debug info.
3867	*
3868	* @param pVM The cross context VM structure.
3869	* @param pVCpu The cross context virtual CPU structure.
3870	* @param rcVMRun The return code from VMRUN (or
3871	* VERR_SVM_INVALID_GUEST_STATE for invalid
3872	* guest-state).
3873	* @param pCtx Pointer to the guest-CPU context.
3874	*/
3875	static void hmR0SvmReportWorldSwitchError(PVM pVM, PVMCPU pVCpu, int rcVMRun, PCPUMCTX pCtx)
3876	{
3877	NOREF(pCtx);
3878	HMSVM_ASSERT_PREEMPT_SAFE();
3879	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
3880	PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
3881
3882	if (rcVMRun == VERR_SVM_INVALID_GUEST_STATE)
3883	{
3884	hmR0DumpRegs(pVM, pVCpu, pCtx); NOREF(pVM);
3885	#ifdef VBOX_STRICT
3886	Log4(("ctrl.u32VmcbCleanBits %#RX32\n", pVmcb->ctrl.u32VmcbCleanBits));
3887	Log4(("ctrl.u16InterceptRdCRx %#x\n", pVmcb->ctrl.u16InterceptRdCRx));
3888	Log4(("ctrl.u16InterceptWrCRx %#x\n", pVmcb->ctrl.u16InterceptWrCRx));
3889	Log4(("ctrl.u16InterceptRdDRx %#x\n", pVmcb->ctrl.u16InterceptRdDRx));
3890	Log4(("ctrl.u16InterceptWrDRx %#x\n", pVmcb->ctrl.u16InterceptWrDRx));
3891	Log4(("ctrl.u32InterceptXcpt %#x\n", pVmcb->ctrl.u32InterceptXcpt));
3892	Log4(("ctrl.u64InterceptCtrl %#RX64\n", pVmcb->ctrl.u64InterceptCtrl));
3893	Log4(("ctrl.u64IOPMPhysAddr %#RX64\n", pVmcb->ctrl.u64IOPMPhysAddr));
3894	Log4(("ctrl.u64MSRPMPhysAddr %#RX64\n", pVmcb->ctrl.u64MSRPMPhysAddr));
3895	Log4(("ctrl.u64TSCOffset %#RX64\n", pVmcb->ctrl.u64TSCOffset));
3896
3897	Log4(("ctrl.TLBCtrl.u32ASID %#x\n", pVmcb->ctrl.TLBCtrl.n.u32ASID));
3898	Log4(("ctrl.TLBCtrl.u8TLBFlush %#x\n", pVmcb->ctrl.TLBCtrl.n.u8TLBFlush));
3899	Log4(("ctrl.TLBCtrl.u24Reserved %#x\n", pVmcb->ctrl.TLBCtrl.n.u24Reserved));
3900
3901	Log4(("ctrl.IntCtrl.u8VTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u8VTPR));
3902	Log4(("ctrl.IntCtrl.u1VIrqPending %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqPending));
3903	Log4(("ctrl.IntCtrl.u1VGif %#x\n", pVmcb->ctrl.IntCtrl.n.u1VGif));
3904	Log4(("ctrl.IntCtrl.u6Reserved0 %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved));
3905	Log4(("ctrl.IntCtrl.u4VIntrPrio %#x\n", pVmcb->ctrl.IntCtrl.n.u4VIntrPrio));
3906	Log4(("ctrl.IntCtrl.u1IgnoreTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR));
3907	Log4(("ctrl.IntCtrl.u3Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u3Reserved));
3908	Log4(("ctrl.IntCtrl.u1VIntrMasking %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIntrMasking));
3909	Log4(("ctrl.IntCtrl.u1VGifEnable %#x\n", pVmcb->ctrl.IntCtrl.n.u1VGifEnable));
3910	Log4(("ctrl.IntCtrl.u5Reserved1 %#x\n", pVmcb->ctrl.IntCtrl.n.u5Reserved));
3911	Log4(("ctrl.IntCtrl.u8VIntrVector %#x\n", pVmcb->ctrl.IntCtrl.n.u8VIntrVector));
3912	Log4(("ctrl.IntCtrl.u24Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u24Reserved));
3913
3914	Log4(("ctrl.IntShadow.u1IntShadow %#x\n", pVmcb->ctrl.IntShadow.n.u1IntShadow));
3915	Log4(("ctrl.IntShadow.u1GuestIntMask %#x\n", pVmcb->ctrl.IntShadow.n.u1GuestIntMask));
3916	Log4(("ctrl.u64ExitCode %#RX64\n", pVmcb->ctrl.u64ExitCode));
3917	Log4(("ctrl.u64ExitInfo1 %#RX64\n", pVmcb->ctrl.u64ExitInfo1));
3918	Log4(("ctrl.u64ExitInfo2 %#RX64\n", pVmcb->ctrl.u64ExitInfo2));
3919	Log4(("ctrl.ExitIntInfo.u8Vector %#x\n", pVmcb->ctrl.ExitIntInfo.n.u8Vector));
3920	Log4(("ctrl.ExitIntInfo.u3Type %#x\n", pVmcb->ctrl.ExitIntInfo.n.u3Type));
3921	Log4(("ctrl.ExitIntInfo.u1ErrorCodeValid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
3922	Log4(("ctrl.ExitIntInfo.u19Reserved %#x\n", pVmcb->ctrl.ExitIntInfo.n.u19Reserved));
3923	Log4(("ctrl.ExitIntInfo.u1Valid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1Valid));
3924	Log4(("ctrl.ExitIntInfo.u32ErrorCode %#x\n", pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
3925	Log4(("ctrl.NestedPagingCtrl.u1NestedPaging %#x\n", pVmcb->ctrl.NestedPagingCtrl.n.u1NestedPaging));
3926	Log4(("ctrl.NestedPagingCtrl.u1Sev %#x\n", pVmcb->ctrl.NestedPagingCtrl.n.u1Sev));
3927	Log4(("ctrl.NestedPagingCtrl.u1SevEs %#x\n", pVmcb->ctrl.NestedPagingCtrl.n.u1SevEs));
3928	Log4(("ctrl.EventInject.u8Vector %#x\n", pVmcb->ctrl.EventInject.n.u8Vector));
3929	Log4(("ctrl.EventInject.u3Type %#x\n", pVmcb->ctrl.EventInject.n.u3Type));
3930	Log4(("ctrl.EventInject.u1ErrorCodeValid %#x\n", pVmcb->ctrl.EventInject.n.u1ErrorCodeValid));
3931	Log4(("ctrl.EventInject.u19Reserved %#x\n", pVmcb->ctrl.EventInject.n.u19Reserved));
3932	Log4(("ctrl.EventInject.u1Valid %#x\n", pVmcb->ctrl.EventInject.n.u1Valid));
3933	Log4(("ctrl.EventInject.u32ErrorCode %#x\n", pVmcb->ctrl.EventInject.n.u32ErrorCode));
3934
3935	Log4(("ctrl.u64NestedPagingCR3 %#RX64\n", pVmcb->ctrl.u64NestedPagingCR3));
3936
3937	Log4(("ctrl.LbrVirt.u1LbrVirt %#x\n", pVmcb->ctrl.LbrVirt.n.u1LbrVirt));
3938	Log4(("ctrl.LbrVirt.u1VirtVmsaveVmload %#x\n", pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload));
3939
3940	Log4(("guest.CS.u16Sel %RTsel\n", pVmcb->guest.CS.u16Sel));
3941	Log4(("guest.CS.u16Attr %#x\n", pVmcb->guest.CS.u16Attr));
3942	Log4(("guest.CS.u32Limit %#RX32\n", pVmcb->guest.CS.u32Limit));
3943	Log4(("guest.CS.u64Base %#RX64\n", pVmcb->guest.CS.u64Base));
3944	Log4(("guest.DS.u16Sel %#RTsel\n", pVmcb->guest.DS.u16Sel));
3945	Log4(("guest.DS.u16Attr %#x\n", pVmcb->guest.DS.u16Attr));
3946	Log4(("guest.DS.u32Limit %#RX32\n", pVmcb->guest.DS.u32Limit));
3947	Log4(("guest.DS.u64Base %#RX64\n", pVmcb->guest.DS.u64Base));
3948	Log4(("guest.ES.u16Sel %RTsel\n", pVmcb->guest.ES.u16Sel));
3949	Log4(("guest.ES.u16Attr %#x\n", pVmcb->guest.ES.u16Attr));
3950	Log4(("guest.ES.u32Limit %#RX32\n", pVmcb->guest.ES.u32Limit));
3951	Log4(("guest.ES.u64Base %#RX64\n", pVmcb->guest.ES.u64Base));
3952	Log4(("guest.FS.u16Sel %RTsel\n", pVmcb->guest.FS.u16Sel));
3953	Log4(("guest.FS.u16Attr %#x\n", pVmcb->guest.FS.u16Attr));
3954	Log4(("guest.FS.u32Limit %#RX32\n", pVmcb->guest.FS.u32Limit));
3955	Log4(("guest.FS.u64Base %#RX64\n", pVmcb->guest.FS.u64Base));
3956	Log4(("guest.GS.u16Sel %RTsel\n", pVmcb->guest.GS.u16Sel));
3957	Log4(("guest.GS.u16Attr %#x\n", pVmcb->guest.GS.u16Attr));
3958	Log4(("guest.GS.u32Limit %#RX32\n", pVmcb->guest.GS.u32Limit));
3959	Log4(("guest.GS.u64Base %#RX64\n", pVmcb->guest.GS.u64Base));
3960
3961	Log4(("guest.GDTR.u32Limit %#RX32\n", pVmcb->guest.GDTR.u32Limit));
3962	Log4(("guest.GDTR.u64Base %#RX64\n", pVmcb->guest.GDTR.u64Base));
3963
3964	Log4(("guest.LDTR.u16Sel %RTsel\n", pVmcb->guest.LDTR.u16Sel));
3965	Log4(("guest.LDTR.u16Attr %#x\n", pVmcb->guest.LDTR.u16Attr));
3966	Log4(("guest.LDTR.u32Limit %#RX32\n", pVmcb->guest.LDTR.u32Limit));
3967	Log4(("guest.LDTR.u64Base %#RX64\n", pVmcb->guest.LDTR.u64Base));
3968
3969	Log4(("guest.IDTR.u32Limit %#RX32\n", pVmcb->guest.IDTR.u32Limit));
3970	Log4(("guest.IDTR.u64Base %#RX64\n", pVmcb->guest.IDTR.u64Base));
3971
3972	Log4(("guest.TR.u16Sel %RTsel\n", pVmcb->guest.TR.u16Sel));
3973	Log4(("guest.TR.u16Attr %#x\n", pVmcb->guest.TR.u16Attr));
3974	Log4(("guest.TR.u32Limit %#RX32\n", pVmcb->guest.TR.u32Limit));
3975	Log4(("guest.TR.u64Base %#RX64\n", pVmcb->guest.TR.u64Base));
3976
3977	Log4(("guest.u8CPL %#x\n", pVmcb->guest.u8CPL));
3978	Log4(("guest.u64CR0 %#RX64\n", pVmcb->guest.u64CR0));
3979	Log4(("guest.u64CR2 %#RX64\n", pVmcb->guest.u64CR2));
3980	Log4(("guest.u64CR3 %#RX64\n", pVmcb->guest.u64CR3));
3981	Log4(("guest.u64CR4 %#RX64\n", pVmcb->guest.u64CR4));
3982	Log4(("guest.u64DR6 %#RX64\n", pVmcb->guest.u64DR6));
3983	Log4(("guest.u64DR7 %#RX64\n", pVmcb->guest.u64DR7));
3984
3985	Log4(("guest.u64RIP %#RX64\n", pVmcb->guest.u64RIP));
3986	Log4(("guest.u64RSP %#RX64\n", pVmcb->guest.u64RSP));
3987	Log4(("guest.u64RAX %#RX64\n", pVmcb->guest.u64RAX));
3988	Log4(("guest.u64RFlags %#RX64\n", pVmcb->guest.u64RFlags));
3989
3990	Log4(("guest.u64SysEnterCS %#RX64\n", pVmcb->guest.u64SysEnterCS));
3991	Log4(("guest.u64SysEnterEIP %#RX64\n", pVmcb->guest.u64SysEnterEIP));
3992	Log4(("guest.u64SysEnterESP %#RX64\n", pVmcb->guest.u64SysEnterESP));
3993
3994	Log4(("guest.u64EFER %#RX64\n", pVmcb->guest.u64EFER));
3995	Log4(("guest.u64STAR %#RX64\n", pVmcb->guest.u64STAR));
3996	Log4(("guest.u64LSTAR %#RX64\n", pVmcb->guest.u64LSTAR));
3997	Log4(("guest.u64CSTAR %#RX64\n", pVmcb->guest.u64CSTAR));
3998	Log4(("guest.u64SFMASK %#RX64\n", pVmcb->guest.u64SFMASK));
3999	Log4(("guest.u64KernelGSBase %#RX64\n", pVmcb->guest.u64KernelGSBase));
4000	Log4(("guest.u64PAT %#RX64\n", pVmcb->guest.u64PAT));
4001	Log4(("guest.u64DBGCTL %#RX64\n", pVmcb->guest.u64DBGCTL));
4002	Log4(("guest.u64BR_FROM %#RX64\n", pVmcb->guest.u64BR_FROM));
4003	Log4(("guest.u64BR_TO %#RX64\n", pVmcb->guest.u64BR_TO));
4004	Log4(("guest.u64LASTEXCPFROM %#RX64\n", pVmcb->guest.u64LASTEXCPFROM));
4005	Log4(("guest.u64LASTEXCPTO %#RX64\n", pVmcb->guest.u64LASTEXCPTO));
4006	#endif /* VBOX_STRICT */
4007	}
4008	else
4009	Log4(("hmR0SvmReportWorldSwitchError: rcVMRun=%d\n", rcVMRun));
4010
4011	NOREF(pVmcb);
4012	}
4013
4014
4015	/**
4016	* Check per-VM and per-VCPU force flag actions that require us to go back to
4017	* ring-3 for one reason or another.
4018	*
4019	* @returns VBox status code (information status code included).
4020	* @retval VINF_SUCCESS if we don't have any actions that require going back to
4021	* ring-3.
4022	* @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
4023	* @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
4024	* interrupts)
4025	* @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
4026	* all EMTs to be in ring-3.
4027	* @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
4028	* @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
4029	* to the EM loop.
4030	*
4031	* @param pVM The cross context VM structure.
4032	* @param pVCpu The cross context virtual CPU structure.
4033	* @param pCtx Pointer to the guest-CPU context.
4034	*/
4035	static int hmR0SvmCheckForceFlags(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
4036	{
4037	Assert(VMMRZCallRing3IsEnabled(pVCpu));
4038
4039	/* On AMD-V we don't need to update CR3, PAE PDPES lazily. See hmR0SvmSaveGuestState(). */
4040	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
4041	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
4042
4043	/* Update pending interrupts into the APIC's IRR. */
4044	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC))
4045	APICUpdatePendingInterrupts(pVCpu);
4046
4047	if ( VM_FF_IS_PENDING(pVM, !pVCpu->hm.s.fSingleInstruction
4048	? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
4049	\|\| VMCPU_FF_IS_PENDING(pVCpu, !pVCpu->hm.s.fSingleInstruction
4050	? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
4051	{
4052	/* Pending PGM C3 sync. */
4053	if (VMCPU_FF_IS_PENDING(pVCpu,VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
4054	{
4055	int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
4056	if (rc != VINF_SUCCESS)
4057	{
4058	Log4(("hmR0SvmCheckForceFlags: PGMSyncCR3 forcing us back to ring-3. rc=%d\n", rc));
4059	return rc;
4060	}
4061	}
4062
4063	/* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
4064	/* -XXX- what was that about single stepping? */
4065	if ( VM_FF_IS_PENDING(pVM, VM_FF_HM_TO_R3_MASK)
4066	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
4067	{
4068	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
4069	int rc = RT_UNLIKELY(VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
4070	Log4(("hmR0SvmCheckForceFlags: HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
4071	return rc;
4072	}
4073
4074	/* Pending VM request packets, such as hardware interrupts. */
4075	if ( VM_FF_IS_PENDING(pVM, VM_FF_REQUEST)
4076	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_REQUEST))
4077	{
4078	Log4(("hmR0SvmCheckForceFlags: Pending VM request forcing us back to ring-3\n"));
4079	return VINF_EM_PENDING_REQUEST;
4080	}
4081
4082	/* Pending PGM pool flushes. */
4083	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
4084	{
4085	Log4(("hmR0SvmCheckForceFlags: PGM pool flush pending forcing us back to ring-3\n"));
4086	return VINF_PGM_POOL_FLUSH_PENDING;
4087	}
4088
4089	/* Pending DMA requests. */
4090	if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
4091	{
4092	Log4(("hmR0SvmCheckForceFlags: Pending DMA request forcing us back to ring-3\n"));
4093	return VINF_EM_RAW_TO_R3;
4094	}
4095	}
4096
4097	return VINF_SUCCESS;
4098	}
4099
4100
4101	#ifdef VBOX_WITH_NESTED_HWVIRT
4102	/**
4103	* Does the preparations before executing nested-guest code in AMD-V.
4104	*
4105	* @returns VBox status code (informational status codes included).
4106	* @retval VINF_SUCCESS if we can proceed with running the guest.
4107	* @retval VINF_* scheduling changes, we have to go back to ring-3.
4108	*
4109	* @param pVM The cross context VM structure.
4110	* @param pVCpu The cross context virtual CPU structure.
4111	* @param pCtx Pointer to the nested-guest-CPU context.
4112	* @param pSvmTransient Pointer to the SVM transient structure.
4113	*
4114	* @remarks Same caveats regarding longjumps as hmR0SvmPreRunGuest applies.
4115	* @sa hmR0SvmPreRunGuest.
4116	*/
4117	static int hmR0SvmPreRunGuestNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4118	{
4119	HMSVM_ASSERT_PREEMPT_SAFE();
4120
4121	if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
4122	{
4123	#ifdef VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM
4124	Log2(("hmR0SvmPreRunGuest: Rescheduling to IEM due to nested-hwvirt or forced IEM exec -> VINF_EM_RESCHEDULE_REM\n"));
4125	return VINF_EM_RESCHEDULE_REM;
4126	#endif
4127	}
4128	else
4129	return VINF_SVM_VMEXIT;
4130
4131	/* Check force flag actions that might require us to go back to ring-3. */
4132	int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
4133	if (rc != VINF_SUCCESS)
4134	return rc;
4135
4136	if (TRPMHasTrap(pVCpu))
4137	hmR0SvmTrpmTrapToPendingEvent(pVCpu);
4138	else if (!pVCpu->hm.s.Event.fPending)
4139	{
4140	VBOXSTRICTRC rcStrict = hmR0SvmEvaluatePendingEventNested(pVCpu, pCtx);
4141	if (rcStrict != VINF_SUCCESS)
4142	return VBOXSTRICTRC_VAL(rcStrict);
4143	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
4144	return VINF_SVM_VMEXIT;
4145	}
4146
4147	/*
4148	* On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
4149	* Just do it in software, see @bugref{8411}.
4150	* NB: If we could continue a task switch exit we wouldn't need to do this.
4151	*/
4152	if (RT_UNLIKELY( !pVM->hm.s.svm.u32Features
4153	&& pVCpu->hm.s.Event.fPending
4154	&& SVM_EVENT_GET_TYPE(pVCpu->hm.s.Event.u64IntInfo) == SVM_EVENT_NMI))
4155	{
4156	return VINF_EM_RAW_INJECT_TRPM_EVENT;
4157	}
4158
4159	#ifdef HMSVM_SYNC_FULL_NESTED_GUEST_STATE
4160	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
4161	#endif
4162
4163	/*
4164	* Load the nested-guest state.
4165	*/
4166	rc = hmR0SvmLoadGuestStateNested(pVCpu, pCtx);
4167	AssertRCReturn(rc, rc);
4168	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull); /** @todo Get new STAM counter for this? */
4169
4170	/* Ensure we've cached (and hopefully modified) the VMCB for execution using hardware-assisted SVM. */
4171	Assert(pCtx->hwvirt.svm.fHMCachedVmcb);
4172
4173	/*
4174	* No longjmps to ring-3 from this point on!!!
4175	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
4176	* This also disables flushing of the R0-logger instance (if any).
4177	*/
4178	VMMRZCallRing3Disable(pVCpu);
4179
4180	/*
4181	* We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
4182	* when thread-context hooks aren't used and we've been running with preemption disabled for a while.
4183	*
4184	* We need to check for force-flags that could've possible been altered since we last checked them (e.g.
4185	* by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
4186	*
4187	* We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
4188	* executing guest code.
4189	*/
4190	pSvmTransient->fEFlags = ASMIntDisableFlags();
4191	if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
4192	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
4193	{
4194	ASMSetFlags(pSvmTransient->fEFlags);
4195	VMMRZCallRing3Enable(pVCpu);
4196	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
4197	return VINF_EM_RAW_TO_R3;
4198	}
4199	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
4200	{
4201	ASMSetFlags(pSvmTransient->fEFlags);
4202	VMMRZCallRing3Enable(pVCpu);
4203	STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
4204	return VINF_EM_RAW_INTERRUPT;
4205	}
4206	return VINF_SUCCESS;
4207	}
4208	#endif
4209
4210
4211	/**
4212	* Does the preparations before executing guest code in AMD-V.
4213	*
4214	* This may cause longjmps to ring-3 and may even result in rescheduling to the
4215	* recompiler. We must be cautious what we do here regarding committing
4216	* guest-state information into the VMCB assuming we assuredly execute the guest
4217	* in AMD-V. If we fall back to the recompiler after updating the VMCB and
4218	* clearing the common-state (TRPM/forceflags), we must undo those changes so
4219	* that the recompiler can (and should) use them when it resumes guest
4220	* execution. Otherwise such operations must be done when we can no longer
4221	* exit to ring-3.
4222	*
4223	* @returns VBox status code (informational status codes included).
4224	* @retval VINF_SUCCESS if we can proceed with running the guest.
4225	* @retval VINF_* scheduling changes, we have to go back to ring-3.
4226	*
4227	* @param pVM The cross context VM structure.
4228	* @param pVCpu The cross context virtual CPU structure.
4229	* @param pCtx Pointer to the guest-CPU context.
4230	* @param pSvmTransient Pointer to the SVM transient structure.
4231	*/
4232	static int hmR0SvmPreRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4233	{
4234	HMSVM_ASSERT_PREEMPT_SAFE();
4235	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
4236
4237	/* Check force flag actions that might require us to go back to ring-3. */
4238	int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
4239	if (rc != VINF_SUCCESS)
4240	return rc;
4241
4242	if (TRPMHasTrap(pVCpu))
4243	hmR0SvmTrpmTrapToPendingEvent(pVCpu);
4244	else if (!pVCpu->hm.s.Event.fPending)
4245	hmR0SvmEvaluatePendingEvent(pVCpu, pCtx);
4246
4247	/*
4248	* On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
4249	* Just do it in software, see @bugref{8411}.
4250	* NB: If we could continue a task switch exit we wouldn't need to do this.
4251	*/
4252	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending && (((pVCpu->hm.s.Event.u64IntInfo >> 8) & 7) == SVM_EVENT_NMI)))
4253	if (RT_UNLIKELY(!pVM->hm.s.svm.u32Features))
4254	return VINF_EM_RAW_INJECT_TRPM_EVENT;
4255
4256	#ifdef HMSVM_SYNC_FULL_GUEST_STATE
4257	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
4258	#endif
4259
4260	/* Load the guest bits that are not shared with the host in any way since we can longjmp or get preempted. */
4261	rc = hmR0SvmLoadGuestState(pVM, pVCpu, pCtx);
4262	AssertRCReturn(rc, rc);
4263	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull);
4264
4265	/*
4266	* If we're not intercepting TPR changes in the guest, save the guest TPR before the world-switch
4267	* so we can update it on the way back if the guest changed the TPR.
4268	*/
4269	if (pVCpu->hm.s.svm.fSyncVTpr)
4270	{
4271	if (pVM->hm.s.fTPRPatchingActive)
4272	pSvmTransient->u8GuestTpr = pCtx->msrLSTAR;
4273	else
4274	{
4275	PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
4276	pSvmTransient->u8GuestTpr = pVmcb->ctrl.IntCtrl.n.u8VTPR;
4277	}
4278	}
4279
4280	/*
4281	* No longjmps to ring-3 from this point on!!!
4282	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
4283	* This also disables flushing of the R0-logger instance (if any).
4284	*/
4285	VMMRZCallRing3Disable(pVCpu);
4286
4287	/*
4288	* We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
4289	* when thread-context hooks aren't used and we've been running with preemption disabled for a while.
4290	*
4291	* We need to check for force-flags that could've possible been altered since we last checked them (e.g.
4292	* by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
4293	*
4294	* We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
4295	* executing guest code.
4296	*/
4297	pSvmTransient->fEFlags = ASMIntDisableFlags();
4298	if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
4299	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
4300	{
4301	ASMSetFlags(pSvmTransient->fEFlags);
4302	VMMRZCallRing3Enable(pVCpu);
4303	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
4304	return VINF_EM_RAW_TO_R3;
4305	}
4306	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
4307	{
4308	ASMSetFlags(pSvmTransient->fEFlags);
4309	VMMRZCallRing3Enable(pVCpu);
4310	STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
4311	return VINF_EM_RAW_INTERRUPT;
4312	}
4313
4314	return VINF_SUCCESS;
4315	}
4316
4317
4318	/**
4319	* Prepares to run guest (or nested-guest) code in AMD-V and we've committed to
4320	* doing so.
4321	*
4322	* This means there is no backing out to ring-3 or anywhere else at this point.
4323	*
4324	* @param pVCpu The cross context virtual CPU structure.
4325	* @param pCtx Pointer to the guest-CPU context.
4326	* @param pSvmTransient Pointer to the SVM transient structure.
4327	*
4328	* @remarks Called with preemption disabled.
4329	* @remarks No-long-jump zone!!!
4330	*/
4331	static void hmR0SvmPreRunGuestCommitted(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4332	{
4333	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
4334	Assert(VMMR0IsLogFlushDisabled(pVCpu));
4335	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
4336
4337	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
4338	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
4339
4340	PVM pVM = pVCpu->CTX_SUFF(pVM);
4341	PSVMVMCB pVmcb = pSvmTransient->pVmcb;
4342
4343	hmR0SvmInjectPendingEvent(pVCpu, pCtx, pVmcb);
4344
4345	if (!CPUMIsGuestFPUStateActive(pVCpu))
4346	{
4347	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestFpuState, x);
4348	CPUMR0LoadGuestFPU(pVM, pVCpu); /* (Ignore rc, no need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
4349	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestFpuState, x);
4350	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadGuestFpu);
4351	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
4352	}
4353
4354	/* Load the state shared between host and guest (FPU, debug). */
4355	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE))
4356	hmR0SvmLoadSharedState(pVCpu, pVmcb, pCtx);
4357
4358	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT); /* Preemption might set this, nothing to do on AMD-V. */
4359	AssertMsg(!HMCPU_CF_VALUE(pVCpu), ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
4360
4361	PHMGLOBALCPUINFO pHostCpu = hmR0GetCurrentCpu();
4362	RTCPUID const idHostCpu = pHostCpu->idCpu;
4363	bool const fMigratedHostCpu = idHostCpu != pVCpu->hm.s.idLastCpu;
4364
4365	/* Setup TSC offsetting. */
4366	if ( pSvmTransient->fUpdateTscOffsetting
4367	\|\| fMigratedHostCpu)
4368	{
4369	hmR0SvmUpdateTscOffsetting(pVM, pVCpu, pCtx, pVmcb);
4370	pSvmTransient->fUpdateTscOffsetting = false;
4371	}
4372
4373	/* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
4374	if (fMigratedHostCpu)
4375	pVmcb->ctrl.u32VmcbCleanBits = 0;
4376
4377	/* Store status of the shared guest-host state at the time of VMRUN. */
4378	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
4379	if (CPUMIsGuestInLongModeEx(pCtx))
4380	{
4381	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
4382	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
4383	}
4384	else
4385	#endif
4386	{
4387	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
4388	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
4389	}
4390
4391	uint8_t *pbMsrBitmap;
4392	if (!pSvmTransient->fIsNestedGuest)
4393	pbMsrBitmap = (uint8_t *)pVCpu->hm.s.svm.pvMsrBitmap;
4394	else
4395	{
4396	hmR0SvmMergeMsrpmNested(pHostCpu, pVCpu, pCtx);
4397
4398	/* Update the nested-guest VMCB with the newly merged MSRPM (clean bits updated below). */
4399	pVmcb->ctrl.u64MSRPMPhysAddr = pHostCpu->n.svm.HCPhysNstGstMsrpm;
4400	pbMsrBitmap = (uint8_t *)pHostCpu->n.svm.pvNstGstMsrpm;
4401	}
4402
4403	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB flushing, set this across the world switch. */
4404	/* Flush the appropriate tagged-TLB entries. */
4405	hmR0SvmFlushTaggedTlb(pVCpu, pCtx, pVmcb, pHostCpu);
4406	Assert(pVCpu->hm.s.idLastCpu == idHostCpu);
4407
4408	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
4409
4410	TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
4411	to start executing. */
4412
4413	/*
4414	* Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that
4415	* RDTSCPs (that don't cause exits) reads the guest MSR. See @bugref{3324}.
4416	*
4417	* This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
4418	*/
4419	if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
4420	&& !(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSCP))
4421	{
4422	uint64_t const uGuestTscAux = CPUMR0GetGuestTscAux(pVCpu);
4423	pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
4424	if (uGuestTscAux != pVCpu->hm.s.u64HostTscAux)
4425	ASMWrMsr(MSR_K8_TSC_AUX, uGuestTscAux);
4426	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
4427	pSvmTransient->fRestoreTscAuxMsr = true;
4428	}
4429	else
4430	{
4431	hmR0SvmSetMsrPermission(pCtx, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
4432	pSvmTransient->fRestoreTscAuxMsr = false;
4433	}
4434	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
4435
4436	/*
4437	* If VMCB Clean bits isn't supported by the CPU or exposed to the guest in the
4438	* nested virtualization case, mark all state-bits as dirty indicating to the
4439	* CPU to re-load from VMCB.
4440	*/
4441	bool const fSupportsVmcbCleanBits = hmR0SvmSupportsVmcbCleanBits(pVCpu, pCtx);
4442	if (!fSupportsVmcbCleanBits)
4443	pVmcb->ctrl.u32VmcbCleanBits = 0;
4444	}
4445
4446
4447	/**
4448	* Wrapper for running the guest code in AMD-V.
4449	*
4450	* @returns VBox strict status code.
4451	* @param pVM The cross context VM structure.
4452	* @param pVCpu The cross context virtual CPU structure.
4453	* @param pCtx Pointer to the guest-CPU context.
4454	*
4455	* @remarks No-long-jump zone!!!
4456	*/
4457	DECLINLINE(int) hmR0SvmRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
4458	{
4459	/*
4460	* 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
4461	* using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
4462	* Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
4463	*/
4464	#ifdef VBOX_WITH_KERNEL_USING_XMM
4465	return hmR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
4466	pVCpu->hm.s.svm.pfnVMRun);
4467	#else
4468	return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
4469	#endif
4470	}
4471
4472	#ifdef VBOX_WITH_NESTED_HWVIRT
4473	/**
4474	* Wrapper for running the nested-guest code in AMD-V.
4475	*
4476	* @returns VBox strict status code.
4477	* @param pVM The cross context VM structure.
4478	* @param pVCpu The cross context virtual CPU structure.
4479	* @param pCtx Pointer to the guest-CPU context.
4480	*
4481	* @remarks No-long-jump zone!!!
4482	*/
4483	DECLINLINE(int) hmR0SvmRunGuestNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
4484	{
4485	/*
4486	* 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
4487	* using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
4488	* Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
4489	*/
4490	#ifdef VBOX_WITH_KERNEL_USING_XMM
4491	return hmR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pCtx->hwvirt.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
4492	pVCpu->hm.s.svm.pfnVMRun);
4493	#else
4494	return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pCtx->hwvirt.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
4495	#endif
4496	}
4497	#endif
4498
4499	/**
4500	* Performs some essential restoration of state after running guest (or
4501	* nested-guest) code in AMD-V.
4502	*
4503	* @param pVCpu The cross context virtual CPU structure.
4504	* @param pMixedCtx Pointer to the guest-CPU context. The data maybe
4505	* out-of-sync. Make sure to update the required fields
4506	* before using them.
4507	* @param pSvmTransient Pointer to the SVM transient structure.
4508	* @param rcVMRun Return code of VMRUN.
4509	*
4510	* @remarks Called with interrupts disabled.
4511	* @remarks No-long-jump zone!!! This function will however re-enable longjmps
4512	* unconditionally when it is safe to do so.
4513	*/
4514	static void hmR0SvmPostRunGuest(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient, int rcVMRun)
4515	{
4516	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
4517
4518	uint64_t const uHostTsc = ASMReadTSC(); /* Read the TSC as soon as possible. */
4519	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB flushing. */
4520	ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for EMT poking. */
4521
4522	PSVMVMCB pVmcb = pSvmTransient->pVmcb;
4523	PSVMVMCBCTRL pVmcbCtrl = &pVmcb->ctrl;
4524
4525	/* TSC read must be done early for maximum accuracy. */
4526	if (!(pVmcbCtrl->u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSC))
4527	{
4528	if (!pSvmTransient->fIsNestedGuest)
4529	TMCpuTickSetLastSeen(pVCpu, uHostTsc + pVmcbCtrl->u64TSCOffset);
4530	else
4531	{
4532	/*
4533	* Undo what we did in hmR0SvmUpdateTscOffsetting() and HMSvmNstGstApplyTscOffset()
4534	* but don't restore the nested-guest VMCB TSC offset here. It shall eventually be
4535	* restored on #VMEXIT in HMSvmNstGstVmExitNotify().
4536	*/
4537	PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = hmR0SvmGetNestedVmcbCache(pVCpu, pMixedCtx);
4538	TMCpuTickSetLastSeen(pVCpu, uHostTsc + pVmcbCtrl->u64TSCOffset - pVmcbNstGstCache->u64TSCOffset);
4539	}
4540	}
4541
4542	if (pSvmTransient->fRestoreTscAuxMsr)
4543	{
4544	uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
4545	CPUMR0SetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
4546	if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
4547	ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
4548	}
4549
4550	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatExit1, x);
4551	TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
4552	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
4553
4554	Assert(!(ASMGetFlags() & X86_EFL_IF));
4555	ASMSetFlags(pSvmTransient->fEFlags); /* Enable interrupts. */
4556	VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
4557
4558	/* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
4559	if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
4560	{
4561	Log4(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
4562	return;
4563	}
4564
4565	pSvmTransient->u64ExitCode = pVmcbCtrl->u64ExitCode; /* Save the #VMEXIT reason. */
4566	HMCPU_EXIT_HISTORY_ADD(pVCpu, pVmcbCtrl->u64ExitCode); /* Update the #VMEXIT history array. */
4567	pVmcbCtrl->u32VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL; /* Mark the VMCB-state cache as unmodified by VMM. */
4568	pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
4569	pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
4570
4571	hmR0SvmSaveGuestState(pVCpu, pMixedCtx, pVmcb); /* Save the guest state from the VMCB to the guest-CPU context. */
4572
4573	if ( pSvmTransient->u64ExitCode != SVM_EXIT_INVALID
4574	&& pVCpu->hm.s.svm.fSyncVTpr)
4575	{
4576	Assert(!pSvmTransient->fIsNestedGuest);
4577	/* TPR patching (for 32-bit guests) uses LSTAR MSR for holding the TPR value, otherwise uses the VTPR. */
4578	if ( pVCpu->CTX_SUFF(pVM)->hm.s.fTPRPatchingActive
4579	&& (pMixedCtx->msrLSTAR & 0xff) != pSvmTransient->u8GuestTpr)
4580	{
4581	int rc = APICSetTpr(pVCpu, pMixedCtx->msrLSTAR & 0xff);
4582	AssertRC(rc);
4583	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
4584	}
4585	/* Sync TPR when we aren't intercepting CR8 writes. */
4586	else if (pSvmTransient->u8GuestTpr != pVmcbCtrl->IntCtrl.n.u8VTPR)
4587	{
4588	int rc = APICSetTpr(pVCpu, pVmcbCtrl->IntCtrl.n.u8VTPR << 4);
4589	AssertRC(rc);
4590	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
4591	}
4592	}
4593	}
4594
4595
4596	/**
4597	* Runs the guest code using AMD-V.
4598	*
4599	* @returns VBox status code.
4600	* @param pVM The cross context VM structure.
4601	* @param pVCpu The cross context virtual CPU structure.
4602	* @param pCtx Pointer to the guest-CPU context.
4603	* @param pcLoops Pointer to the number of executed loops.
4604	*/
4605	static int hmR0SvmRunGuestCodeNormal(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t *pcLoops)
4606	{
4607	uint32_t const cMaxResumeLoops = pVM->hm.s.cMaxResumeLoops;
4608	Assert(pcLoops);
4609	Assert(*pcLoops <= cMaxResumeLoops);
4610
4611	SVMTRANSIENT SvmTransient;
4612	RT_ZERO(SvmTransient);
4613	SvmTransient.fUpdateTscOffsetting = true;
4614	SvmTransient.pVmcb = pVCpu->hm.s.svm.pVmcb;
4615
4616	int rc = VERR_INTERNAL_ERROR_5;
4617	for (;;)
4618	{
4619	Assert(!HMR0SuspendPending());
4620	HMSVM_ASSERT_CPU_SAFE();
4621
4622	/* Preparatory work for running guest code, this may force us to return
4623	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
4624	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
4625	rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
4626	if (rc != VINF_SUCCESS)
4627	break;
4628
4629	/*
4630	* No longjmps to ring-3 from this point on!!!
4631	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
4632	* This also disables flushing of the R0-logger instance (if any).
4633	*/
4634	hmR0SvmPreRunGuestCommitted(pVCpu, pCtx, &SvmTransient);
4635	rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
4636
4637	/* Restore any residual host-state and save any bits shared between host
4638	and guest into the guest-CPU state. Re-enables interrupts! */
4639	hmR0SvmPostRunGuest(pVCpu, pCtx, &SvmTransient, rc);
4640
4641	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
4642	\|\| SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
4643	{
4644	if (rc == VINF_SUCCESS)
4645	rc = VERR_SVM_INVALID_GUEST_STATE;
4646	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
4647	hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
4648	break;
4649	}
4650
4651	/* Handle the #VMEXIT. */
4652	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
4653	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
4654	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pVCpu->hm.s.svm.pVmcb);
4655	rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
4656	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
4657	if (rc != VINF_SUCCESS)
4658	break;
4659	if (++(*pcLoops) >= cMaxResumeLoops)
4660	{
4661	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
4662	rc = VINF_EM_RAW_INTERRUPT;
4663	break;
4664	}
4665	}
4666
4667	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
4668	return rc;
4669	}
4670
4671
4672	/**
4673	* Runs the guest code using AMD-V in single step mode.
4674	*
4675	* @returns VBox status code.
4676	* @param pVM The cross context VM structure.
4677	* @param pVCpu The cross context virtual CPU structure.
4678	* @param pCtx Pointer to the guest-CPU context.
4679	* @param pcLoops Pointer to the number of executed loops.
4680	*/
4681	static int hmR0SvmRunGuestCodeStep(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t *pcLoops)
4682	{
4683	uint32_t const cMaxResumeLoops = pVM->hm.s.cMaxResumeLoops;
4684	Assert(pcLoops);
4685	Assert(*pcLoops <= cMaxResumeLoops);
4686
4687	SVMTRANSIENT SvmTransient;
4688	RT_ZERO(SvmTransient);
4689	SvmTransient.fUpdateTscOffsetting = true;
4690	SvmTransient.pVmcb = pVCpu->hm.s.svm.pVmcb;
4691
4692	uint16_t uCsStart = pCtx->cs.Sel;
4693	uint64_t uRipStart = pCtx->rip;
4694
4695	int rc = VERR_INTERNAL_ERROR_5;
4696	for (;;)
4697	{
4698	Assert(!HMR0SuspendPending());
4699	AssertMsg(pVCpu->hm.s.idEnteredCpu == RTMpCpuId(),
4700	("Illegal migration! Entered on CPU %u Current %u cLoops=%u\n", (unsigned)pVCpu->hm.s.idEnteredCpu,
4701	(unsigned)RTMpCpuId(), *pcLoops));
4702
4703	/* Preparatory work for running guest code, this may force us to return
4704	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
4705	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
4706	rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
4707	if (rc != VINF_SUCCESS)
4708	break;
4709
4710	/*
4711	* No longjmps to ring-3 from this point on!!!
4712	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
4713	* This also disables flushing of the R0-logger instance (if any).
4714	*/
4715	VMMRZCallRing3Disable(pVCpu);
4716	VMMRZCallRing3RemoveNotification(pVCpu);
4717	hmR0SvmPreRunGuestCommitted(pVCpu, pCtx, &SvmTransient);
4718
4719	rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
4720
4721	/*
4722	* Restore any residual host-state and save any bits shared between host and guest into the guest-CPU state.
4723	* This will also re-enable longjmps to ring-3 when it has reached a safe point!!!
4724	*/
4725	hmR0SvmPostRunGuest(pVCpu, pCtx, &SvmTransient, rc);
4726	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
4727	\|\| SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
4728	{
4729	if (rc == VINF_SUCCESS)
4730	rc = VERR_SVM_INVALID_GUEST_STATE;
4731	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
4732	hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
4733	return rc;
4734	}
4735
4736	/* Handle the #VMEXIT. */
4737	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
4738	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
4739	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pVCpu->hm.s.svm.pVmcb);
4740	rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
4741	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
4742	if (rc != VINF_SUCCESS)
4743	break;
4744	if (++(*pcLoops) >= cMaxResumeLoops)
4745	{
4746	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
4747	rc = VINF_EM_RAW_INTERRUPT;
4748	break;
4749	}
4750
4751	/*
4752	* Did the RIP change, if so, consider it a single step.
4753	* Otherwise, make sure one of the TFs gets set.
4754	*/
4755	if ( pCtx->rip != uRipStart
4756	\|\| pCtx->cs.Sel != uCsStart)
4757	{
4758	rc = VINF_EM_DBG_STEPPED;
4759	break;
4760	}
4761	pVCpu->hm.s.fContextUseFlags \|= HM_CHANGED_GUEST_DEBUG;
4762	}
4763
4764	/*
4765	* Clear the X86_EFL_TF if necessary.
4766	*/
4767	if (pVCpu->hm.s.fClearTrapFlag)
4768	{
4769	pVCpu->hm.s.fClearTrapFlag = false;
4770	pCtx->eflags.Bits.u1TF = 0;
4771	}
4772
4773	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
4774	return rc;
4775	}
4776
4777	#ifdef VBOX_WITH_NESTED_HWVIRT
4778	/**
4779	* Runs the nested-guest code using AMD-V.
4780	*
4781	* @returns VBox status code.
4782	* @param pVM The cross context VM structure.
4783	* @param pVCpu The cross context virtual CPU structure.
4784	* @param pCtx Pointer to the guest-CPU context.
4785	* @param pcLoops Pointer to the number of executed loops. If we're switching
4786	* from the guest-code execution loop to this nested-guest
4787	* execution loop pass the remainder value, else pass 0.
4788	*/
4789	static int hmR0SvmRunGuestCodeNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t *pcLoops)
4790	{
4791	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
4792	Assert(pcLoops);
4793	Assert(*pcLoops <= pVM->hm.s.cMaxResumeLoops);
4794
4795	SVMTRANSIENT SvmTransient;
4796	RT_ZERO(SvmTransient);
4797	SvmTransient.fUpdateTscOffsetting = true;
4798	SvmTransient.pVmcb = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
4799	SvmTransient.fIsNestedGuest = true;
4800
4801	int rc = VERR_INTERNAL_ERROR_4;
4802	for (;;)
4803	{
4804	Assert(!HMR0SuspendPending());
4805	HMSVM_ASSERT_CPU_SAFE();
4806
4807	/* Preparatory work for running nested-guest code, this may force us to return
4808	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
4809	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
4810	rc = hmR0SvmPreRunGuestNested(pVM, pVCpu, pCtx, &SvmTransient);
4811	if ( rc != VINF_SUCCESS
4812	\|\| !CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
4813	{
4814	break;
4815	}
4816
4817	/*
4818	* No longjmps to ring-3 from this point on!!!
4819	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
4820	* This also disables flushing of the R0-logger instance (if any).
4821	*/
4822	hmR0SvmPreRunGuestCommitted(pVCpu, pCtx, &SvmTransient);
4823
4824	rc = hmR0SvmRunGuestNested(pVM, pVCpu, pCtx);
4825
4826	/* Restore any residual host-state and save any bits shared between host
4827	and guest into the guest-CPU state. Re-enables interrupts! */
4828	hmR0SvmPostRunGuest(pVCpu, pCtx, &SvmTransient, rc);
4829
4830	if (RT_LIKELY( rc == VINF_SUCCESS
4831	&& SvmTransient.u64ExitCode != SVM_EXIT_INVALID))
4832	{ /* extremely likely */ }
4833	else
4834	{
4835	/* VMRUN failed, shouldn't really happen, Guru. */
4836	if (rc != VINF_SUCCESS)
4837	break;
4838
4839	/* Invalid nested-guest state. Cause a #VMEXIT but assert on strict builds. */
4840	AssertMsgFailed(("Invalid nested-guest state. rc=%Rrc u64ExitCode=%#RX64\n", rc, SvmTransient.u64ExitCode));
4841	rc = VBOXSTRICTRC_TODO(IEMExecSvmVmexit(pVCpu, SVM_EXIT_INVALID, 0, 0));
4842	break;
4843	}
4844
4845	/* Handle the #VMEXIT. */
4846	HMSVM_NESTED_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
4847	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
4848	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pCtx->hwvirt.svm.CTX_SUFF(pVmcb));
4849	rc = hmR0SvmHandleExitNested(pVCpu, pCtx, &SvmTransient);
4850	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
4851	if (rc != VINF_SUCCESS)
4852	break;
4853	if (++(*pcLoops) >= pVM->hm.s.cMaxResumeLoops)
4854	{
4855	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
4856	rc = VINF_EM_RAW_INTERRUPT;
4857	break;
4858	}
4859
4860	/** @todo handle single-stepping */
4861	}
4862
4863	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
4864	return rc;
4865	}
4866	#endif
4867
4868
4869	/**
4870	* Runs the guest code using AMD-V.
4871	*
4872	* @returns Strict VBox status code.
4873	* @param pVM The cross context VM structure.
4874	* @param pVCpu The cross context virtual CPU structure.
4875	* @param pCtx Pointer to the guest-CPU context.
4876	*/
4877	VMMR0DECL(VBOXSTRICTRC) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
4878	{
4879	Assert(VMMRZCallRing3IsEnabled(pVCpu));
4880	HMSVM_ASSERT_PREEMPT_SAFE();
4881	VMMRZCallRing3SetNotification(pVCpu, hmR0SvmCallRing3Callback, pCtx);
4882
4883	uint32_t cLoops = 0;
4884	int rc;
4885	#ifdef VBOX_WITH_NESTED_HWVIRT
4886	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
4887	#endif
4888	{
4889	if (!pVCpu->hm.s.fSingleInstruction)
4890	rc = hmR0SvmRunGuestCodeNormal(pVM, pVCpu, pCtx, &cLoops);
4891	else
4892	rc = hmR0SvmRunGuestCodeStep(pVM, pVCpu, pCtx, &cLoops);
4893	}
4894	#ifdef VBOX_WITH_NESTED_HWVIRT
4895	else
4896	{
4897	rc = VINF_SVM_VMRUN;
4898	}
4899
4900	/* Re-check the nested-guest condition here as we may be transitioning from the normal
4901	execution loop into the nested-guest, hence this is not placed in the 'else' part above. */
4902	if (rc == VINF_SVM_VMRUN)
4903	{
4904	rc = hmR0SvmRunGuestCodeNested(pVM, pVCpu, pCtx, &cLoops);
4905	if (rc == VINF_SVM_VMEXIT)
4906	rc = VINF_SUCCESS;
4907	}
4908	#endif
4909
4910	/* Fixup error codes. */
4911	if (rc == VERR_EM_INTERPRETER)
4912	rc = VINF_EM_RAW_EMULATE_INSTR;
4913	else if (rc == VINF_EM_RESET)
4914	rc = VINF_EM_TRIPLE_FAULT;
4915
4916	/* Prepare to return to ring-3. This will remove longjmp notifications. */
4917	rc = hmR0SvmExitToRing3(pVM, pVCpu, pCtx, rc);
4918	Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
4919	return rc;
4920	}
4921
4922
4923	#ifdef VBOX_WITH_NESTED_HWVIRT
4924	/**
4925	* Determines whether an IOIO intercept is active for the nested-guest or not.
4926	*
4927	* @param pvIoBitmap Pointer to the nested-guest IO bitmap.
4928	* @param pIoExitInfo Pointer to the SVMIOIOEXITINFO.
4929	*/
4930	static bool hmR0SvmIsIoInterceptActive(void *pvIoBitmap, PSVMIOIOEXITINFO pIoExitInfo)
4931	{
4932	const uint16_t u16Port = pIoExitInfo->n.u16Port;
4933	const SVMIOIOTYPE enmIoType = (SVMIOIOTYPE)pIoExitInfo->n.u1Type;
4934	const uint8_t cbReg = (pIoExitInfo->u >> SVM_IOIO_OP_SIZE_SHIFT) & 7;
4935	const uint8_t cAddrSizeBits = ((pIoExitInfo->u >> SVM_IOIO_ADDR_SIZE_SHIFT) & 7) << 4;
4936	const uint8_t iEffSeg = pIoExitInfo->n.u3Seg;
4937	const bool fRep = pIoExitInfo->n.u1Rep;
4938	const bool fStrIo = pIoExitInfo->n.u1Str;
4939
4940	return HMSvmIsIOInterceptActive(pvIoBitmap, u16Port, enmIoType, cbReg, cAddrSizeBits, iEffSeg, fRep, fStrIo,
4941	NULL /* pIoExitInfo */);
4942	}
4943
4944
4945	/**
4946	* Handles a nested-guest \#VMEXIT (for all EXITCODE values except
4947	* SVM_EXIT_INVALID).
4948	*
4949	* @returns VBox status code (informational status codes included).
4950	* @param pVCpu The cross context virtual CPU structure.
4951	* @param pCtx Pointer to the guest-CPU context.
4952	* @param pSvmTransient Pointer to the SVM transient structure.
4953	*/
4954	static int hmR0SvmHandleExitNested(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4955	{
4956	HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
4957	Assert(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID);
4958	Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
4959
4960	#define HM_SVM_VMEXIT_NESTED(a_pVCpu, a_uExitCode, a_uExitInfo1, a_uExitInfo2) \
4961	VBOXSTRICTRC_TODO(IEMExecSvmVmexit(a_pVCpu, a_uExitCode, a_uExitInfo1, a_uExitInfo2))
4962
4963	/*
4964	* For all the #VMEXITs here we primarily figure out if the #VMEXIT is expected
4965	* by the nested-guest. If it isn't, it should be handled by the (outer) guest.
4966	*/
4967	PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
4968	PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
4969	uint64_t const uExitCode = pVmcbNstGstCtrl->u64ExitCode;
4970	uint64_t const uExitInfo1 = pVmcbNstGstCtrl->u64ExitInfo1;
4971	uint64_t const uExitInfo2 = pVmcbNstGstCtrl->u64ExitInfo2;
4972
4973	Assert(uExitCode == pVmcbNstGstCtrl->u64ExitCode);
4974	switch (uExitCode)
4975	{
4976	case SVM_EXIT_CPUID:
4977	{
4978	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_CPUID))
4979	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
4980	return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
4981	}
4982
4983	case SVM_EXIT_RDTSC:
4984	{
4985	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RDTSC))
4986	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
4987	return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
4988	}
4989
4990	case SVM_EXIT_RDTSCP:
4991	{
4992	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RDTSCP))
4993	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
4994	return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
4995	}
4996
4997	case SVM_EXIT_MONITOR:
4998	{
4999	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_MONITOR))
5000	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5001	return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
5002	}
5003
5004	case SVM_EXIT_MWAIT:
5005	{
5006	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_MWAIT))
5007	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5008	return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
5009	}
5010
5011	case SVM_EXIT_HLT:
5012	{
5013	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_HLT))
5014	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5015	return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
5016	}
5017
5018	case SVM_EXIT_MSR:
5019	{
5020	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_MSR_PROT))
5021	{
5022	uint32_t const idMsr = pCtx->ecx;
5023	uint16_t offMsrpm;
5024	uint8_t uMsrpmBit;
5025	int rc = HMSvmGetMsrpmOffsetAndBit(idMsr, &offMsrpm, &uMsrpmBit);
5026	if (RT_SUCCESS(rc))
5027	{
5028	Assert(uMsrpmBit == 0 \|\| uMsrpmBit == 2 \|\| uMsrpmBit == 4 \|\| uMsrpmBit == 6);
5029	Assert(offMsrpm < SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
5030
5031	uint8_t const pbMsrBitmap = (uint8_t const )pCtx->hwvirt.svm.CTX_SUFF(pvMsrBitmap);
5032	pbMsrBitmap += offMsrpm;
5033	bool const fInterceptRead = RT_BOOL(*pbMsrBitmap & RT_BIT(uMsrpmBit));
5034	bool const fInterceptWrite = RT_BOOL(*pbMsrBitmap & RT_BIT(uMsrpmBit + 1));
5035
5036	if ( (fInterceptWrite && pVmcbNstGstCtrl->u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
5037	\|\| (fInterceptRead && pVmcbNstGstCtrl->u64ExitInfo1 == SVM_EXIT1_MSR_READ))
5038	{
5039	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5040	}
5041	}
5042	else
5043	{
5044	/*
5045	* MSRs not covered by the MSRPM automatically cause an #VMEXIT.
5046	* See AMD-V spec. "15.11 MSR Intercepts".
5047	*/
5048	Assert(rc == VERR_OUT_OF_RANGE);
5049	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5050	}
5051	}
5052	return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
5053	}
5054
5055	case SVM_EXIT_IOIO:
5056	{
5057	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_IOIO_PROT))
5058	{
5059	void *pvIoBitmap = pCtx->hwvirt.svm.CTX_SUFF(pvIoBitmap);
5060	SVMIOIOEXITINFO IoExitInfo;
5061	IoExitInfo.u = pVmcbNstGst->ctrl.u64ExitInfo1;
5062	bool const fIntercept = hmR0SvmIsIoInterceptActive(pvIoBitmap, &IoExitInfo);
5063	if (fIntercept)
5064	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5065	}
5066	return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
5067	}
5068
5069	case SVM_EXIT_XCPT_PF:
5070	{
5071	PVM pVM = pVCpu->CTX_SUFF(pVM);
5072	if (pVM->hm.s.fNestedPaging)
5073	{
5074	uint32_t const u32ErrCode = pVmcbNstGstCtrl->u64ExitInfo1;
5075	uint64_t const uFaultAddress = pVmcbNstGstCtrl->u64ExitInfo2;
5076
5077	/* If the nested-guest is intercepting #PFs, cause a #PF #VMEXIT. */
5078	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_PF))
5079	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, u32ErrCode, uFaultAddress);
5080
5081	/* If the nested-guest is not intercepting #PFs, forward the #PF to the nested-guest. */
5082	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
5083	return VINF_SUCCESS;
5084	}
5085	return hmR0SvmExitXcptPFNested(pVCpu, pCtx,pSvmTransient);
5086	}
5087
5088	case SVM_EXIT_XCPT_UD:
5089	{
5090	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_UD))
5091	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5092	hmR0SvmSetPendingXcptUD(pVCpu);
5093	return VINF_SUCCESS;
5094	}
5095
5096	case SVM_EXIT_XCPT_MF:
5097	{
5098	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_MF))
5099	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5100	return hmR0SvmExitXcptMF(pVCpu, pCtx, pSvmTransient);
5101	}
5102
5103	case SVM_EXIT_XCPT_DB:
5104	{
5105	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_DB))
5106	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5107	return hmR0SvmNestedExitXcptDB(pVCpu, pCtx, pSvmTransient);
5108	}
5109
5110	case SVM_EXIT_XCPT_AC:
5111	{
5112	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_AC))
5113	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5114	return hmR0SvmExitXcptAC(pVCpu, pCtx, pSvmTransient);
5115	}
5116
5117	case SVM_EXIT_XCPT_BP:
5118	{
5119	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_BP))
5120	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5121	return hmR0SvmNestedExitXcptBP(pVCpu, pCtx, pSvmTransient);
5122	}
5123
5124	case SVM_EXIT_READ_CR0:
5125	case SVM_EXIT_READ_CR3:
5126	case SVM_EXIT_READ_CR4:
5127	{
5128	uint8_t const uCr = uExitCode - SVM_EXIT_READ_CR0;
5129	if (HMIsGuestSvmReadCRxInterceptSet(pVCpu, pCtx, uCr))
5130	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5131	return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
5132	}
5133
5134	case SVM_EXIT_CR0_SEL_WRITE:
5135	{
5136	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_CR0_SEL_WRITE))
5137	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5138	return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
5139	}
5140
5141	case SVM_EXIT_WRITE_CR0:
5142	case SVM_EXIT_WRITE_CR3:
5143	case SVM_EXIT_WRITE_CR4:
5144	case SVM_EXIT_WRITE_CR8: /** @todo Shouldn't writes to CR8 go to V_TPR instead since we run with V_INTR_MASKING set? */
5145	{
5146	uint8_t const uCr = uExitCode - SVM_EXIT_WRITE_CR0;
5147	Log4(("hmR0SvmHandleExitNested: Write CR%u: uExitInfo1=%#RX64 uExitInfo2=%#RX64\n", uCr, uExitInfo1, uExitInfo2));
5148
5149	if (HMIsGuestSvmWriteCRxInterceptSet(pVCpu, pCtx, uCr))
5150	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5151	return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
5152	}
5153
5154	case SVM_EXIT_PAUSE:
5155	{
5156	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_PAUSE))
5157	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5158	return hmR0SvmExitPause(pVCpu, pCtx, pSvmTransient);
5159	}
5160
5161	case SVM_EXIT_VINTR:
5162	{
5163	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VINTR))
5164	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5165	return hmR0SvmExitUnexpected(pVCpu, pCtx, pSvmTransient);
5166	}
5167
5168	case SVM_EXIT_INTR:
5169	case SVM_EXIT_NMI:
5170	case SVM_EXIT_XCPT_NMI: /* Shouldn't ever happen, SVM_EXIT_NMI is used instead. */
5171	case SVM_EXIT_SMI:
5172	{
5173	/*
5174	* We shouldn't direct physical interrupts, NMIs, SMIs to the nested-guest.
5175	*
5176	* Although we don't intercept SMIs, the nested-guest might. Therefore, we
5177	* might get an SMI #VMEXIT here so simply ignore rather than causing a
5178	* corresponding nested-guest #VMEXIT.
5179	*/
5180	return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
5181	}
5182
5183	case SVM_EXIT_FERR_FREEZE:
5184	{
5185	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_FERR_FREEZE))
5186	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5187	return hmR0SvmExitFerrFreeze(pVCpu, pCtx, pSvmTransient);
5188	}
5189
5190	case SVM_EXIT_INVLPG:
5191	{
5192	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INVLPG))
5193	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5194	return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
5195	}
5196
5197	case SVM_EXIT_WBINVD:
5198	{
5199	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_WBINVD))
5200	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5201	return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
5202	}
5203
5204	case SVM_EXIT_INVD:
5205	{
5206	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INVD))
5207	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5208	return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
5209	}
5210
5211	case SVM_EXIT_RDPMC:
5212	{
5213	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RDPMC))
5214	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5215	return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
5216	}
5217
5218	default:
5219	{
5220	switch (uExitCode)
5221	{
5222	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
5223	case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
5224	case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
5225	case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
5226	{
5227	uint8_t const uDr = uExitCode - SVM_EXIT_READ_DR0;
5228	if (HMIsGuestSvmReadDRxInterceptSet(pVCpu, pCtx, uDr))
5229	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5230	return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
5231	}
5232
5233	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
5234	case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
5235	case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
5236	case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
5237	{
5238	uint8_t const uDr = uExitCode - SVM_EXIT_WRITE_DR0;
5239	if (HMIsGuestSvmWriteDRxInterceptSet(pVCpu, pCtx, uDr))
5240	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5241	return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
5242	}
5243
5244	case SVM_EXIT_XCPT_0: /* #DE */
5245	/* SVM_EXIT_XCPT_1: / / #DB - Handled above. */
5246	/* SVM_EXIT_XCPT_2: / / #NMI - Handled above. */
5247	/* SVM_EXIT_XCPT_3: / / #BP - Handled above. */
5248	case SVM_EXIT_XCPT_4: /* #OF */
5249	case SVM_EXIT_XCPT_5: /* #BR */
5250	/* SVM_EXIT_XCPT_6: / / #UD - Handled above. */
5251	case SVM_EXIT_XCPT_7: /* #NM */
5252	case SVM_EXIT_XCPT_8: /* #DF */
5253	case SVM_EXIT_XCPT_9: /* #CO_SEG_OVERRUN */
5254	case SVM_EXIT_XCPT_10: /* #TS */
5255	case SVM_EXIT_XCPT_11: /* #NP */
5256	case SVM_EXIT_XCPT_12: /* #SS */
5257	case SVM_EXIT_XCPT_13: /* #GP */
5258	/* SVM_EXIT_XCPT_14: / / #PF - Handled above. */
5259	case SVM_EXIT_XCPT_15: /* Reserved. */
5260	/* SVM_EXIT_XCPT_16: / / #MF - Handled above. */
5261	/* SVM_EXIT_XCPT_17: / / #AC - Handled above. */
5262	case SVM_EXIT_XCPT_18: /* #MC */
5263	case SVM_EXIT_XCPT_19: /* #XF */
5264	case SVM_EXIT_XCPT_20: case SVM_EXIT_XCPT_21: case SVM_EXIT_XCPT_22: case SVM_EXIT_XCPT_23:
5265	case SVM_EXIT_XCPT_24: case SVM_EXIT_XCPT_25: case SVM_EXIT_XCPT_26: case SVM_EXIT_XCPT_27:
5266	case SVM_EXIT_XCPT_28: case SVM_EXIT_XCPT_29: case SVM_EXIT_XCPT_30: case SVM_EXIT_XCPT_31:
5267	{
5268	uint8_t const uVector = uExitCode - SVM_EXIT_XCPT_0;
5269	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, uVector))
5270	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5271	return hmR0SvmExitXcptGeneric(pVCpu, pCtx, pSvmTransient);
5272	}
5273
5274	case SVM_EXIT_XSETBV:
5275	{
5276	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_XSETBV))
5277	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5278	return hmR0SvmExitXsetbv(pVCpu, pCtx, pSvmTransient);
5279	}
5280
5281	case SVM_EXIT_TASK_SWITCH:
5282	{
5283	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_TASK_SWITCH))
5284	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5285	return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
5286	}
5287
5288	case SVM_EXIT_IRET:
5289	{
5290	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_IRET))
5291	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5292	return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
5293	}
5294
5295	case SVM_EXIT_SHUTDOWN:
5296	{
5297	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_SHUTDOWN))
5298	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5299	return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
5300	}
5301
5302	case SVM_EXIT_VMMCALL:
5303	{
5304	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMMCALL))
5305	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5306	return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
5307	}
5308
5309	case SVM_EXIT_CLGI:
5310	{
5311	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_CLGI))
5312	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5313	return hmR0SvmExitClgi(pVCpu, pCtx, pSvmTransient);
5314	}
5315
5316	case SVM_EXIT_STGI:
5317	{
5318	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_STGI))
5319	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5320	return hmR0SvmExitStgi(pVCpu, pCtx, pSvmTransient);
5321	}
5322
5323	case SVM_EXIT_VMLOAD:
5324	{
5325	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMLOAD))
5326	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5327	return hmR0SvmExitVmload(pVCpu, pCtx, pSvmTransient);
5328	}
5329
5330	case SVM_EXIT_VMSAVE:
5331	{
5332	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMSAVE))
5333	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5334	return hmR0SvmExitVmsave(pVCpu, pCtx, pSvmTransient);
5335	}
5336
5337	case SVM_EXIT_INVLPGA:
5338	{
5339	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INVLPGA))
5340	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5341	return hmR0SvmExitInvlpga(pVCpu, pCtx, pSvmTransient);
5342	}
5343
5344	case SVM_EXIT_VMRUN:
5345	{
5346	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMRUN))
5347	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5348	return hmR0SvmExitVmrun(pVCpu, pCtx, pSvmTransient);
5349	}
5350
5351	case SVM_EXIT_RSM:
5352	{
5353	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RSM))
5354	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5355	hmR0SvmSetPendingXcptUD(pVCpu);
5356	return VINF_SUCCESS;
5357	}
5358
5359	case SVM_EXIT_SKINIT:
5360	{
5361	if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_SKINIT))
5362	return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
5363	hmR0SvmSetPendingXcptUD(pVCpu);
5364	return VINF_SUCCESS;
5365	}
5366
5367	/** @todo Needed when restoring saved-state when saved state support wasn't yet
5368	* added. Perhaps it won't be required later. */
5369	#if 0
5370	case SVM_EXIT_NPF:
5371	{
5372	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
5373	if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_PF))
5374	return HM_SVM_VMEXIT_NESTED(pVCpu, SVM_EXIT_XCPT_14, RT_LO_U32(uExitInfo1), uExitInfo2);
5375	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, RT_LO_U32(uExitInfo1), uExitInfo2);
5376	return VINF_SUCCESS;
5377	}
5378	#else
5379	case SVM_EXIT_NPF:
5380	#endif
5381	case SVM_EXIT_INIT: /* We shouldn't get INIT signals while executing a nested-guest. */
5382	{
5383	return hmR0SvmExitUnexpected(pVCpu, pCtx, pSvmTransient);
5384	}
5385
5386	default:
5387	{
5388	AssertMsgFailed(("hmR0SvmHandleExitNested: Unknown exit code %#x\n", pSvmTransient->u64ExitCode));
5389	pVCpu->hm.s.u32HMError = pSvmTransient->u64ExitCode;
5390	return VERR_SVM_UNKNOWN_EXIT;
5391	}
5392	}
5393	}
5394	}
5395	/* not reached */
5396
5397	#undef HM_SVM_VMEXIT_NESTED
5398	}
5399	#endif
5400
5401
5402	/**
5403	* Handles a guest \#VMEXIT (for all EXITCODE values except SVM_EXIT_INVALID).
5404	*
5405	* @returns VBox status code (informational status codes included).
5406	* @param pVCpu The cross context virtual CPU structure.
5407	* @param pCtx Pointer to the guest-CPU context.
5408	* @param pSvmTransient Pointer to the SVM transient structure.
5409	*/
5410	static int hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5411	{
5412	Assert(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID);
5413	Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
5414
5415	/*
5416	* The ordering of the case labels is based on most-frequently-occurring #VMEXITs for most guests under
5417	* normal workloads (for some definition of "normal").
5418	*/
5419	uint64_t const uExitCode = pSvmTransient->u64ExitCode;
5420	switch (uExitCode)
5421	{
5422	case SVM_EXIT_NPF:
5423	return hmR0SvmExitNestedPF(pVCpu, pCtx, pSvmTransient);
5424
5425	case SVM_EXIT_IOIO:
5426	return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
5427
5428	case SVM_EXIT_RDTSC:
5429	return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
5430
5431	case SVM_EXIT_RDTSCP:
5432	return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
5433
5434	case SVM_EXIT_CPUID:
5435	return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
5436
5437	case SVM_EXIT_XCPT_14: /* X86_XCPT_PF */
5438	return hmR0SvmExitXcptPF(pVCpu, pCtx, pSvmTransient);
5439
5440	case SVM_EXIT_XCPT_6: /* X86_XCPT_UD */
5441	return hmR0SvmExitXcptUD(pVCpu, pCtx, pSvmTransient);
5442
5443	case SVM_EXIT_XCPT_16: /* X86_XCPT_MF */
5444	return hmR0SvmExitXcptMF(pVCpu, pCtx, pSvmTransient);
5445
5446	case SVM_EXIT_XCPT_1: /* X86_XCPT_DB */
5447	return hmR0SvmExitXcptDB(pVCpu, pCtx, pSvmTransient);
5448
5449	case SVM_EXIT_XCPT_17: /* X86_XCPT_AC */
5450	return hmR0SvmExitXcptAC(pVCpu, pCtx, pSvmTransient);
5451
5452	case SVM_EXIT_XCPT_3: /* X86_XCPT_BP */
5453	return hmR0SvmExitXcptBP(pVCpu, pCtx, pSvmTransient);
5454
5455	case SVM_EXIT_MONITOR:
5456	return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
5457
5458	case SVM_EXIT_MWAIT:
5459	return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
5460
5461	case SVM_EXIT_HLT:
5462	return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
5463
5464	case SVM_EXIT_READ_CR0:
5465	case SVM_EXIT_READ_CR3:
5466	case SVM_EXIT_READ_CR4:
5467	return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
5468
5469	case SVM_EXIT_CR0_SEL_WRITE:
5470	case SVM_EXIT_WRITE_CR0:
5471	case SVM_EXIT_WRITE_CR3:
5472	case SVM_EXIT_WRITE_CR4:
5473	case SVM_EXIT_WRITE_CR8:
5474	{
5475	uint8_t const uCr = uExitCode == SVM_EXIT_CR0_SEL_WRITE ? 0 : uExitCode - SVM_EXIT_WRITE_CR0;
5476	Log4(("hmR0SvmHandleExit: Write CR%u\n", uCr)); NOREF(uCr);
5477	return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
5478	}
5479
5480	case SVM_EXIT_PAUSE:
5481	return hmR0SvmExitPause(pVCpu, pCtx, pSvmTransient);
5482
5483	case SVM_EXIT_VMMCALL:
5484	return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
5485
5486	case SVM_EXIT_VINTR:
5487	return hmR0SvmExitVIntr(pVCpu, pCtx, pSvmTransient);
5488
5489	case SVM_EXIT_FERR_FREEZE:
5490	return hmR0SvmExitFerrFreeze(pVCpu, pCtx, pSvmTransient);
5491
5492	case SVM_EXIT_INTR:
5493	case SVM_EXIT_NMI:
5494	case SVM_EXIT_XCPT_NMI: /* Shouldn't ever happen, SVM_EXIT_NMI is used instead. */
5495	return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
5496
5497	case SVM_EXIT_MSR:
5498	return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
5499
5500	case SVM_EXIT_INVLPG:
5501	return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
5502
5503	case SVM_EXIT_WBINVD:
5504	return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
5505
5506	case SVM_EXIT_INVD:
5507	return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
5508
5509	case SVM_EXIT_RDPMC:
5510	return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
5511
5512	default:
5513	{
5514	switch (pSvmTransient->u64ExitCode)
5515	{
5516	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
5517	case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
5518	case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
5519	case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
5520	return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
5521
5522	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
5523	case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
5524	case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
5525	case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
5526	return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
5527
5528	case SVM_EXIT_XSETBV:
5529	return hmR0SvmExitXsetbv(pVCpu, pCtx, pSvmTransient);
5530
5531	case SVM_EXIT_TASK_SWITCH:
5532	return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
5533
5534	case SVM_EXIT_IRET:
5535	return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
5536
5537	case SVM_EXIT_SHUTDOWN:
5538	return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
5539
5540	case SVM_EXIT_SMI:
5541	case SVM_EXIT_INIT:
5542	{
5543	/*
5544	* We don't intercept SMIs. As for INIT signals, it really shouldn't ever happen here.
5545	* If it ever does, we want to know about it so log the exit code and bail.
5546	*/
5547	return hmR0SvmExitUnexpected(pVCpu, pCtx, pSvmTransient);
5548	}
5549
5550	#ifdef VBOX_WITH_NESTED_HWVIRT
5551	case SVM_EXIT_CLGI: return hmR0SvmExitClgi(pVCpu, pCtx, pSvmTransient);
5552	case SVM_EXIT_STGI: return hmR0SvmExitStgi(pVCpu, pCtx, pSvmTransient);
5553	case SVM_EXIT_VMLOAD: return hmR0SvmExitVmload(pVCpu, pCtx, pSvmTransient);
5554	case SVM_EXIT_VMSAVE: return hmR0SvmExitVmsave(pVCpu, pCtx, pSvmTransient);
5555	case SVM_EXIT_INVLPGA: return hmR0SvmExitInvlpga(pVCpu, pCtx, pSvmTransient);
5556	case SVM_EXIT_VMRUN: return hmR0SvmExitVmrun(pVCpu, pCtx, pSvmTransient);
5557	#else
5558	case SVM_EXIT_CLGI:
5559	case SVM_EXIT_STGI:
5560	case SVM_EXIT_VMLOAD:
5561	case SVM_EXIT_VMSAVE:
5562	case SVM_EXIT_INVLPGA:
5563	case SVM_EXIT_VMRUN:
5564	#endif
5565	case SVM_EXIT_RSM:
5566	case SVM_EXIT_SKINIT:
5567	{
5568	hmR0SvmSetPendingXcptUD(pVCpu);
5569	return VINF_SUCCESS;
5570	}
5571
5572	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
5573	case SVM_EXIT_XCPT_0: /* #DE */
5574	/* SVM_EXIT_XCPT_1: / / #DB - Handled above. */
5575	/* SVM_EXIT_XCPT_2: / / #NMI - Handled above. */
5576	/* SVM_EXIT_XCPT_3: / / #BP - Handled above. */
5577	case SVM_EXIT_XCPT_4: /* #OF */
5578	case SVM_EXIT_XCPT_5: /* #BR */
5579	/* SVM_EXIT_XCPT_6: / / #UD - Handled above. */
5580	case SVM_EXIT_XCPT_7: /* #NM */
5581	case SVM_EXIT_XCPT_8: /* #DF */
5582	case SVM_EXIT_XCPT_9: /* #CO_SEG_OVERRUN */
5583	case SVM_EXIT_XCPT_10: /* #TS */
5584	case SVM_EXIT_XCPT_11: /* #NP */
5585	case SVM_EXIT_XCPT_12: /* #SS */
5586	case SVM_EXIT_XCPT_13: /* #GP */
5587	/* SVM_EXIT_XCPT_14: / / #PF - Handled above. */
5588	case SVM_EXIT_XCPT_15: /* Reserved. */
5589	/* SVM_EXIT_XCPT_16: / / #MF - Handled above. */
5590	/* SVM_EXIT_XCPT_17: / / #AC - Handled above. */
5591	case SVM_EXIT_XCPT_18: /* #MC */
5592	case SVM_EXIT_XCPT_19: /* #XF */
5593	case SVM_EXIT_XCPT_20: case SVM_EXIT_XCPT_21: case SVM_EXIT_XCPT_22: case SVM_EXIT_XCPT_23:
5594	case SVM_EXIT_XCPT_24: case SVM_EXIT_XCPT_25: case SVM_EXIT_XCPT_26: case SVM_EXIT_XCPT_27:
5595	case SVM_EXIT_XCPT_28: case SVM_EXIT_XCPT_29: case SVM_EXIT_XCPT_30: case SVM_EXIT_XCPT_31:
5596	return hmR0SvmExitXcptGeneric(pVCpu, pCtx, pSvmTransient);
5597	#endif /* HMSVM_ALWAYS_TRAP_ALL_XCPTS */
5598
5599	default:
5600	{
5601	AssertMsgFailed(("hmR0SvmHandleExit: Unknown exit code %#RX64\n", uExitCode));
5602	pVCpu->hm.s.u32HMError = uExitCode;
5603	return VERR_SVM_UNKNOWN_EXIT;
5604	}
5605	}
5606	}
5607	}
5608	/* not reached */
5609	}
5610
5611
5612	#ifdef DEBUG
5613	/* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
5614	# define HMSVM_ASSERT_PREEMPT_CPUID_VAR() \
5615	RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
5616
5617	# define HMSVM_ASSERT_PREEMPT_CPUID() \
5618	do \
5619	{ \
5620	RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
5621	AssertMsg(idAssertCpu == idAssertCpuNow, ("SVM %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
5622	} while (0)
5623
5624	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() \
5625	do { \
5626	AssertPtr(pVCpu); \
5627	AssertPtr(pCtx); \
5628	AssertPtr(pSvmTransient); \
5629	Assert(ASMIntAreEnabled()); \
5630	HMSVM_ASSERT_PREEMPT_SAFE(); \
5631	HMSVM_ASSERT_PREEMPT_CPUID_VAR(); \
5632	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", (uint32_t)pVCpu->idCpu)); \
5633	HMSVM_ASSERT_PREEMPT_SAFE(); \
5634	if (VMMR0IsLogFlushDisabled(pVCpu)) \
5635	HMSVM_ASSERT_PREEMPT_CPUID(); \
5636	} while (0)
5637	#else /* Release builds */
5638	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() do { NOREF(pVCpu); NOREF(pCtx); NOREF(pSvmTransient); } while (0)
5639	#endif
5640
5641
5642	/**
5643	* Worker for hmR0SvmInterpretInvlpg().
5644	*
5645	* @return VBox status code.
5646	* @param pVCpu The cross context virtual CPU structure.
5647	* @param pCpu Pointer to the disassembler state.
5648	* @param pCtx The guest CPU context.
5649	*/
5650	static int hmR0SvmInterpretInvlPgEx(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTX pCtx)
5651	{
5652	DISQPVPARAMVAL Param1;
5653	RTGCPTR GCPtrPage;
5654
5655	int rc = DISQueryParamVal(CPUMCTX2CORE(pCtx), pCpu, &pCpu->Param1, &Param1, DISQPVWHICH_SRC);
5656	if (RT_FAILURE(rc))
5657	return VERR_EM_INTERPRETER;
5658
5659	if ( Param1.type == DISQPV_TYPE_IMMEDIATE
5660	\|\| Param1.type == DISQPV_TYPE_ADDRESS)
5661	{
5662	if (!(Param1.flags & (DISQPV_FLAG_32 \| DISQPV_FLAG_64)))
5663	return VERR_EM_INTERPRETER;
5664
5665	GCPtrPage = Param1.val.val64;
5666	VBOXSTRICTRC rc2 = EMInterpretInvlpg(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx), GCPtrPage);
5667	rc = VBOXSTRICTRC_VAL(rc2);
5668	}
5669	else
5670	{
5671	Log4(("hmR0SvmInterpretInvlPgEx invalid parameter type %#x\n", Param1.type));
5672	rc = VERR_EM_INTERPRETER;
5673	}
5674
5675	return rc;
5676	}
5677
5678
5679	/**
5680	* Interprets INVLPG.
5681	*
5682	* @returns VBox status code.
5683	* @retval VINF_* Scheduling instructions.
5684	* @retval VERR_EM_INTERPRETER Something we can't cope with.
5685	* @retval VERR_* Fatal errors.
5686	*
5687	* @param pVM The cross context VM structure.
5688	* @param pVCpu The cross context virtual CPU structure.
5689	* @param pCtx The guest CPU context.
5690	*
5691	* @remarks Updates the RIP if the instruction was executed successfully.
5692	*/
5693	static int hmR0SvmInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
5694	{
5695	/* Only allow 32 & 64 bit code. */
5696	if (CPUMGetGuestCodeBits(pVCpu) != 16)
5697	{
5698	PDISSTATE pDis = &pVCpu->hm.s.DisState;
5699	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL /* pcbInstr */);
5700	if ( RT_SUCCESS(rc)
5701	&& pDis->pCurInstr->uOpcode == OP_INVLPG)
5702	{
5703	rc = hmR0SvmInterpretInvlPgEx(pVCpu, pDis, pCtx);
5704	if (RT_SUCCESS(rc))
5705	pCtx->rip += pDis->cbInstr;
5706	return rc;
5707	}
5708	else
5709	Log4(("hmR0SvmInterpretInvlpg: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
5710	}
5711	return VERR_EM_INTERPRETER;
5712	}
5713
5714
5715	#ifdef HMSVM_USE_IEM_EVENT_REFLECTION
5716	/**
5717	* Gets the IEM exception flags for the specified SVM event.
5718	*
5719	* @returns The IEM exception flags.
5720	* @param pEvent Pointer to the SVM event.
5721	*
5722	* @remarks This function currently only constructs flags required for
5723	* IEMEvaluateRecursiveXcpt and not the complete flags (e.g. error-code
5724	* and CR2 aspects of an exception are not included).
5725	*/
5726	static uint32_t hmR0SvmGetIemXcptFlags(PCSVMEVENT pEvent)
5727	{
5728	uint8_t const uEventType = pEvent->n.u3Type;
5729	uint32_t fIemXcptFlags;
5730	switch (uEventType)
5731	{
5732	case SVM_EVENT_EXCEPTION:
5733	/*
5734	* Only INT3 and INTO instructions can raise #BP and #OF exceptions.
5735	* See AMD spec. Table 8-1. "Interrupt Vector Source and Cause".
5736	*/
5737	if (pEvent->n.u8Vector == X86_XCPT_BP)
5738	{
5739	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT \| IEM_XCPT_FLAGS_BP_INSTR;
5740	break;
5741	}
5742	if (pEvent->n.u8Vector == X86_XCPT_OF)
5743	{
5744	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT \| IEM_XCPT_FLAGS_OF_INSTR;
5745	break;
5746	}
5747	/** @todo How do we distinguish ICEBP \#DB from the regular one? */
5748	RT_FALL_THRU();
5749	case SVM_EVENT_NMI:
5750	fIemXcptFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
5751	break;
5752
5753	case SVM_EVENT_EXTERNAL_IRQ:
5754	fIemXcptFlags = IEM_XCPT_FLAGS_T_EXT_INT;
5755	break;
5756
5757	case SVM_EVENT_SOFTWARE_INT:
5758	fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT;
5759	break;
5760
5761	default:
5762	fIemXcptFlags = 0;
5763	AssertMsgFailed(("Unexpected event type! uEventType=%#x uVector=%#x", uEventType, pEvent->n.u8Vector));
5764	break;
5765	}
5766	return fIemXcptFlags;
5767	}
5768
5769	#else
5770	/**
5771	* Determines if an exception is a contributory exception.
5772	*
5773	* Contributory exceptions are ones which can cause double-faults unless the
5774	* original exception was a benign exception. Page-fault is intentionally not
5775	* included here as it's a conditional contributory exception.
5776	*
5777	* @returns @c true if the exception is contributory, @c false otherwise.
5778	* @param uVector The exception vector.
5779	*/
5780	DECLINLINE(bool) hmR0SvmIsContributoryXcpt(const uint32_t uVector)
5781	{
5782	switch (uVector)
5783	{
5784	case X86_XCPT_GP:
5785	case X86_XCPT_SS:
5786	case X86_XCPT_NP:
5787	case X86_XCPT_TS:
5788	case X86_XCPT_DE:
5789	return true;
5790	default:
5791	break;
5792	}
5793	return false;
5794	}
5795	#endif /* HMSVM_USE_IEM_EVENT_REFLECTION */
5796
5797
5798	/**
5799	* Handle a condition that occurred while delivering an event through the guest
5800	* IDT.
5801	*
5802	* @returns VBox status code (informational error codes included).
5803	* @retval VINF_SUCCESS if we should continue handling the \#VMEXIT.
5804	* @retval VINF_HM_DOUBLE_FAULT if a \#DF condition was detected and we ought to
5805	* continue execution of the guest which will delivery the \#DF.
5806	* @retval VINF_EM_RESET if we detected a triple-fault condition.
5807	* @retval VERR_EM_GUEST_CPU_HANG if we detected a guest CPU hang.
5808	*
5809	* @param pVCpu The cross context virtual CPU structure.
5810	* @param pCtx Pointer to the guest-CPU context.
5811	* @param pSvmTransient Pointer to the SVM transient structure.
5812	*
5813	* @remarks No-long-jump zone!!!
5814	*/
5815	static int hmR0SvmCheckExitDueToEventDelivery(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5816	{
5817	int rc = VINF_SUCCESS;
5818	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
5819
5820	Log4(("EXITINTINFO: Pending vectoring event %#RX64 Valid=%RTbool ErrValid=%RTbool Err=%#RX32 Type=%u Vector=%u\n",
5821	pVmcb->ctrl.ExitIntInfo.u, !!pVmcb->ctrl.ExitIntInfo.n.u1Valid, !!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid,
5822	pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, pVmcb->ctrl.ExitIntInfo.n.u3Type, pVmcb->ctrl.ExitIntInfo.n.u8Vector));
5823
5824	/* See AMD spec. 15.7.3 "EXITINFO Pseudo-Code". The EXITINTINFO (if valid) contains the prior exception (IDT vector)
5825	* that was trying to be delivered to the guest which caused a #VMEXIT which was intercepted (Exit vector). */
5826	if (pVmcb->ctrl.ExitIntInfo.n.u1Valid)
5827	{
5828	#ifdef HMSVM_USE_IEM_EVENT_REFLECTION
5829	IEMXCPTRAISE enmRaise;
5830	IEMXCPTRAISEINFO fRaiseInfo;
5831	bool const fExitIsHwXcpt = pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0 <= SVM_EXIT_XCPT_31;
5832	uint8_t const uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
5833	if (fExitIsHwXcpt)
5834	{
5835	uint8_t const uExitVector = pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0;
5836	uint32_t const fIdtVectorFlags = hmR0SvmGetIemXcptFlags(&pVmcb->ctrl.ExitIntInfo);
5837	uint32_t const fExitVectorFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
5838	enmRaise = IEMEvaluateRecursiveXcpt(pVCpu, fIdtVectorFlags, uIdtVector, fExitVectorFlags, uExitVector, &fRaiseInfo);
5839	}
5840	else
5841	{
5842	/*
5843	* If delivery of an event caused a #VMEXIT that is not an exception (e.g. #NPF) then we
5844	* end up here.
5845	*
5846	* If the event was:
5847	* - a software interrupt, we can re-execute the instruction which will regenerate
5848	* the event.
5849	* - an NMI, we need to clear NMI blocking and re-inject the NMI.
5850	* - a hardware exception or external interrupt, we re-inject it.
5851	*/
5852	fRaiseInfo = IEMXCPTRAISEINFO_NONE;
5853	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_SOFTWARE_INT)
5854	enmRaise = IEMXCPTRAISE_REEXEC_INSTR;
5855	else
5856	enmRaise = IEMXCPTRAISE_PREV_EVENT;
5857	}
5858
5859	switch (enmRaise)
5860	{
5861	case IEMXCPTRAISE_CURRENT_XCPT:
5862	case IEMXCPTRAISE_PREV_EVENT:
5863	{
5864	/* For software interrupts, we shall re-execute the instruction. */
5865	if (!(fRaiseInfo & IEMXCPTRAISEINFO_SOFT_INT_XCPT))
5866	{
5867	RTGCUINTPTR GCPtrFaultAddress = 0;
5868
5869	/* If we are re-injecting an NMI, clear NMI blocking. */
5870	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
5871	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
5872
5873	/* Determine a vectoring #PF condition, see comment in hmR0SvmExitXcptPF(). */
5874	if (fRaiseInfo & (IEMXCPTRAISEINFO_EXT_INT_PF \| IEMXCPTRAISEINFO_NMI_PF))
5875	pSvmTransient->fVectoringPF = true;
5876	else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION
5877	&& uIdtVector == X86_XCPT_PF)
5878	{
5879	/*
5880	* If the previous exception was a #PF, we need to recover the CR2 value.
5881	* This can't happen with shadow paging.
5882	*/
5883	GCPtrFaultAddress = pCtx->cr2;
5884	}
5885
5886	/*
5887	* Without nested paging, when uExitVector is #PF, CR2 value will be updated from the VMCB's
5888	* exit info. fields, if it's a guest #PF, see hmR0SvmExitXcptPF().
5889	*/
5890	Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
5891	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
5892	hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, GCPtrFaultAddress);
5893
5894	Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32 GCPtrFaultAddress=%#RX64\n",
5895	pVmcb->ctrl.ExitIntInfo.u, RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid),
5896	pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, GCPtrFaultAddress));
5897	}
5898	break;
5899	}
5900
5901	case IEMXCPTRAISE_REEXEC_INSTR:
5902	{
5903	Assert(rc == VINF_SUCCESS);
5904	break;
5905	}
5906
5907	case IEMXCPTRAISE_DOUBLE_FAULT:
5908	{
5909	/*
5910	* Determing a vectoring double #PF condition. Used later, when PGM evaluates the
5911	* second #PF as a guest #PF (and not a shadow #PF) and needs to be converted into a #DF.
5912	*/
5913	if (fRaiseInfo & IEMXCPTRAISEINFO_PF_PF)
5914	{
5915	pSvmTransient->fVectoringDoublePF = true;
5916	Assert(rc == VINF_SUCCESS);
5917	}
5918	else
5919	{
5920	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
5921	hmR0SvmSetPendingXcptDF(pVCpu);
5922	rc = VINF_HM_DOUBLE_FAULT;
5923	}
5924	break;
5925	}
5926
5927	case IEMXCPTRAISE_TRIPLE_FAULT:
5928	{
5929	rc = VINF_EM_RESET;
5930	break;
5931	}
5932
5933	case IEMXCPTRAISE_CPU_HANG:
5934	{
5935	rc = VERR_EM_GUEST_CPU_HANG;
5936	break;
5937	}
5938
5939	default:
5940	{
5941	AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
5942	rc = VERR_SVM_IPE_2;
5943	break;
5944	}
5945	}
5946	#else
5947	uint8_t uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
5948
5949	typedef enum
5950	{
5951	SVMREFLECTXCPT_XCPT, /* Reflect the exception to the guest or for further evaluation by VMM. */
5952	SVMREFLECTXCPT_DF, /* Reflect the exception as a double-fault to the guest. */
5953	SVMREFLECTXCPT_TF, /* Indicate a triple faulted state to the VMM. */
5954	SVMREFLECTXCPT_HANG, /* Indicate bad VM trying to deadlock the CPU. */
5955	SVMREFLECTXCPT_NONE /* Nothing to reflect. */
5956	} SVMREFLECTXCPT;
5957
5958	SVMREFLECTXCPT enmReflect = SVMREFLECTXCPT_NONE;
5959	bool fReflectingNmi = false;
5960	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION)
5961	{
5962	if (pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0 <= SVM_EXIT_XCPT_31)
5963	{
5964	uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0);
5965
5966	#ifdef VBOX_STRICT
5967	if ( hmR0SvmIsContributoryXcpt(uIdtVector)
5968	&& uExitVector == X86_XCPT_PF)
5969	{
5970	Log4(("IDT: Contributory #PF idCpu=%u uCR2=%#RX64\n", pVCpu->idCpu, pCtx->cr2));
5971	}
5972	#endif
5973
5974	if ( uIdtVector == X86_XCPT_BP
5975	\|\| uIdtVector == X86_XCPT_OF)
5976	{
5977	/* Ignore INT3/INTO, just re-execute. See @bugref{8357}. */
5978	}
5979	else if ( uExitVector == X86_XCPT_PF
5980	&& uIdtVector == X86_XCPT_PF)
5981	{
5982	pSvmTransient->fVectoringDoublePF = true;
5983	Log4(("IDT: Vectoring double #PF uCR2=%#RX64\n", pCtx->cr2));
5984	}
5985	else if ( uExitVector == X86_XCPT_AC
5986	&& uIdtVector == X86_XCPT_AC)
5987	{
5988	enmReflect = SVMREFLECTXCPT_HANG;
5989	Log4(("IDT: Nested #AC - Bad guest\n"));
5990	}
5991	else if ( (pVmcb->ctrl.u32InterceptXcpt & HMSVM_CONTRIBUTORY_XCPT_MASK)
5992	&& hmR0SvmIsContributoryXcpt(uExitVector)
5993	&& ( hmR0SvmIsContributoryXcpt(uIdtVector)
5994	\|\| uIdtVector == X86_XCPT_PF))
5995	{
5996	enmReflect = SVMREFLECTXCPT_DF;
5997	Log4(("IDT: Pending vectoring #DF %#RX64 uIdtVector=%#x uExitVector=%#x\n", pVCpu->hm.s.Event.u64IntInfo,
5998	uIdtVector, uExitVector));
5999	}
6000	else if (uIdtVector == X86_XCPT_DF)
6001	{
6002	enmReflect = SVMREFLECTXCPT_TF;
6003	Log4(("IDT: Pending vectoring triple-fault %#RX64 uIdtVector=%#x uExitVector=%#x\n",
6004	pVCpu->hm.s.Event.u64IntInfo, uIdtVector, uExitVector));
6005	}
6006	else
6007	enmReflect = SVMREFLECTXCPT_XCPT;
6008	}
6009	else
6010	{
6011	/*
6012	* If event delivery caused an #VMEXIT that is not an exception (e.g. #NPF) then reflect the original
6013	* exception to the guest after handling the #VMEXIT.
6014	*/
6015	enmReflect = SVMREFLECTXCPT_XCPT;
6016	}
6017	}
6018	else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXTERNAL_IRQ
6019	\|\| pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
6020	{
6021	enmReflect = SVMREFLECTXCPT_XCPT;
6022	fReflectingNmi = RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI);
6023
6024	if (pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0 <= SVM_EXIT_XCPT_31)
6025	{
6026	uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_XCPT_0);
6027	if (uExitVector == X86_XCPT_PF)
6028	{
6029	pSvmTransient->fVectoringPF = true;
6030	Log4(("IDT: Vectoring #PF due to Ext-Int/NMI. uCR2=%#RX64\n", pCtx->cr2));
6031	}
6032	}
6033	}
6034	/* else: Ignore software interrupts (INT n) as they reoccur when restarting the instruction. */
6035
6036	switch (enmReflect)
6037	{
6038	case SVMREFLECTXCPT_XCPT:
6039	{
6040	/* If we are re-injecting the NMI, clear NMI blocking. */
6041	if (fReflectingNmi)
6042	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
6043
6044	Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
6045	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
6046	hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, 0 /* GCPtrFaultAddress */);
6047
6048	/* If uExitVector is #PF, CR2 value will be updated from the VMCB if it's a guest #PF. See hmR0SvmExitXcptPF(). */
6049	Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32\n", pVmcb->ctrl.ExitIntInfo.u,
6050	!!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid, pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
6051	break;
6052	}
6053
6054	case SVMREFLECTXCPT_DF:
6055	{
6056	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
6057	hmR0SvmSetPendingXcptDF(pVCpu);
6058	rc = VINF_HM_DOUBLE_FAULT;
6059	break;
6060	}
6061
6062	case SVMREFLECTXCPT_TF:
6063	{
6064	rc = VINF_EM_RESET;
6065	break;
6066	}
6067
6068	case SVMREFLECTXCPT_HANG:
6069	{
6070	rc = VERR_EM_GUEST_CPU_HANG;
6071	break;
6072	}
6073
6074	default:
6075	Assert(rc == VINF_SUCCESS);
6076	break;
6077	}
6078	#endif /* HMSVM_USE_IEM_EVENT_REFLECTION */
6079	}
6080	Assert(rc == VINF_SUCCESS \|\| rc == VINF_HM_DOUBLE_FAULT \|\| rc == VINF_EM_RESET \|\| rc == VERR_EM_GUEST_CPU_HANG);
6081	NOREF(pCtx);
6082	return rc;
6083	}
6084
6085
6086	/**
6087	* Advances the guest RIP making use of the CPU's NRIP_SAVE feature if
6088	* supported, otherwise advances the RIP by the number of bytes specified in
6089	* @a cb.
6090	*
6091	* @param pVCpu The cross context virtual CPU structure.
6092	* @param pCtx Pointer to the guest-CPU context.
6093	* @param cb RIP increment value in bytes.
6094	*
6095	* @remarks Use this function only from \#VMEXIT's where the NRIP value is valid
6096	* when NRIP_SAVE is supported by the CPU, otherwise use
6097	* hmR0SvmAdvanceRipDumb!
6098	*/
6099	DECLINLINE(void) hmR0SvmAdvanceRipHwAssist(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
6100	{
6101	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6102	if (fSupportsNextRipSave)
6103	{
6104	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6105	Assert(pVmcb);
6106	Assert(pVmcb->ctrl.u64NextRIP);
6107	AssertRelease(pVmcb->ctrl.u64NextRIP - pCtx->rip == cb); /* temporary, remove later */
6108	pCtx->rip = pVmcb->ctrl.u64NextRIP;
6109	}
6110	else
6111	pCtx->rip += cb;
6112
6113	HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx);
6114	}
6115
6116
6117	#ifdef VBOX_WITH_NESTED_HWVIRT
6118	/**
6119	* Gets the length of the current instruction if the CPU supports the NRIP_SAVE
6120	* feature. Otherwise, returns the value in @a cbLikely.
6121	*
6122	* @param pVCpu The cross context virtual CPU structure.
6123	* @param pCtx Pointer to the guest-CPU context.
6124	* @param cbLikely The likely instruction length.
6125	*/
6126	DECLINLINE(uint8_t) hmR0SvmGetInstrLengthHwAssist(PVMCPU pVCpu, PCPUMCTX pCtx, uint8_t cbLikely)
6127	{
6128	Assert(cbLikely <= 15); /* See Intel spec. 2.3.11 "AVX Instruction Length" */
6129	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6130	if (fSupportsNextRipSave)
6131	{
6132	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6133	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
6134	Assert(cbInstr == cbLikely);
6135	return cbInstr;
6136	}
6137	return cbLikely;
6138	}
6139	#endif
6140
6141
6142	/**
6143	* Advances the guest RIP by the number of bytes specified in @a cb. This does
6144	* not make use of any hardware features to determine the instruction length.
6145	*
6146	* @param pVCpu The cross context virtual CPU structure.
6147	* @param pCtx Pointer to the guest-CPU context.
6148	* @param cb RIP increment value in bytes.
6149	*/
6150	DECLINLINE(void) hmR0SvmAdvanceRipDumb(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
6151	{
6152	pCtx->rip += cb;
6153	HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx);
6154	}
6155	#undef HMSVM_UPDATE_INTR_SHADOW
6156
6157
6158	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
6159	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #VMEXIT handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
6160	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
6161
6162	/** @name \#VMEXIT handlers.
6163	* @{
6164	*/
6165
6166	/**
6167	* \#VMEXIT handler for external interrupts, NMIs, FPU assertion freeze and INIT
6168	* signals (SVM_EXIT_INTR, SVM_EXIT_NMI, SVM_EXIT_FERR_FREEZE, SVM_EXIT_INIT).
6169	*/
6170	HMSVM_EXIT_DECL hmR0SvmExitIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6171	{
6172	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6173
6174	if (pSvmTransient->u64ExitCode == SVM_EXIT_NMI)
6175	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
6176	else if (pSvmTransient->u64ExitCode == SVM_EXIT_INTR)
6177	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
6178
6179	/*
6180	* AMD-V has no preemption timer and the generic periodic preemption timer has no way to signal -before- the timer
6181	* fires if the current interrupt is our own timer or a some other host interrupt. We also cannot examine what
6182	* interrupt it is until the host actually take the interrupt.
6183	*
6184	* Going back to executing guest code here unconditionally causes random scheduling problems (observed on an
6185	* AMD Phenom 9850 Quad-Core on Windows 64-bit host).
6186	*/
6187	return VINF_EM_RAW_INTERRUPT;
6188	}
6189
6190
6191	/**
6192	* \#VMEXIT handler for WBINVD (SVM_EXIT_WBINVD). Conditional \#VMEXIT.
6193	*/
6194	HMSVM_EXIT_DECL hmR0SvmExitWbinvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6195	{
6196	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6197
6198	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
6199	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWbinvd);
6200	int rc = VINF_SUCCESS;
6201	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6202	return rc;
6203	}
6204
6205
6206	/**
6207	* \#VMEXIT handler for INVD (SVM_EXIT_INVD). Unconditional \#VMEXIT.
6208	*/
6209	HMSVM_EXIT_DECL hmR0SvmExitInvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6210	{
6211	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6212
6213	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
6214	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvd);
6215	int rc = VINF_SUCCESS;
6216	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6217	return rc;
6218	}
6219
6220
6221	/**
6222	* \#VMEXIT handler for INVD (SVM_EXIT_CPUID). Conditional \#VMEXIT.
6223	*/
6224	HMSVM_EXIT_DECL hmR0SvmExitCpuid(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6225	{
6226	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6227	PVM pVM = pVCpu->CTX_SUFF(pVM);
6228	int rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
6229	if (RT_LIKELY(rc == VINF_SUCCESS))
6230	{
6231	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
6232	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6233	}
6234	else
6235	{
6236	AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
6237	rc = VERR_EM_INTERPRETER;
6238	}
6239	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCpuid);
6240	return rc;
6241	}
6242
6243
6244	/**
6245	* \#VMEXIT handler for RDTSC (SVM_EXIT_RDTSC). Conditional \#VMEXIT.
6246	*/
6247	HMSVM_EXIT_DECL hmR0SvmExitRdtsc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6248	{
6249	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6250	PVM pVM = pVCpu->CTX_SUFF(pVM);
6251	int rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
6252	if (RT_LIKELY(rc == VINF_SUCCESS))
6253	{
6254	pSvmTransient->fUpdateTscOffsetting = true;
6255	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
6256	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6257	}
6258	else
6259	{
6260	AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtsc failed with %Rrc\n", rc));
6261	rc = VERR_EM_INTERPRETER;
6262	}
6263	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtsc);
6264	return rc;
6265	}
6266
6267
6268	/**
6269	* \#VMEXIT handler for RDTSCP (SVM_EXIT_RDTSCP). Conditional \#VMEXIT.
6270	*/
6271	HMSVM_EXIT_DECL hmR0SvmExitRdtscp(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6272	{
6273	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6274	int rc = EMInterpretRdtscp(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
6275	if (RT_LIKELY(rc == VINF_SUCCESS))
6276	{
6277	pSvmTransient->fUpdateTscOffsetting = true;
6278	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
6279	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6280	}
6281	else
6282	{
6283	AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtscp failed with %Rrc\n", rc));
6284	rc = VERR_EM_INTERPRETER;
6285	}
6286	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtscp);
6287	return rc;
6288	}
6289
6290
6291	/**
6292	* \#VMEXIT handler for RDPMC (SVM_EXIT_RDPMC). Conditional \#VMEXIT.
6293	*/
6294	HMSVM_EXIT_DECL hmR0SvmExitRdpmc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6295	{
6296	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6297	int rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
6298	if (RT_LIKELY(rc == VINF_SUCCESS))
6299	{
6300	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
6301	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6302	}
6303	else
6304	{
6305	AssertMsgFailed(("hmR0SvmExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
6306	rc = VERR_EM_INTERPRETER;
6307	}
6308	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdpmc);
6309	return rc;
6310	}
6311
6312
6313	/**
6314	* \#VMEXIT handler for INVLPG (SVM_EXIT_INVLPG). Conditional \#VMEXIT.
6315	*/
6316	HMSVM_EXIT_DECL hmR0SvmExitInvlpg(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6317	{
6318	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6319	PVM pVM = pVCpu->CTX_SUFF(pVM);
6320	Assert(!pVM->hm.s.fNestedPaging);
6321	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpg);
6322
6323	bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu, pCtx);
6324	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6325	if ( fSupportsDecodeAssists
6326	&& fSupportsNextRipSave)
6327	{
6328	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6329	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
6330	RTGCPTR const GCPtrPage = pVmcb->ctrl.u64ExitInfo1;
6331	VBOXSTRICTRC rcStrict = IEMExecDecodedInvlpg(pVCpu, cbInstr, GCPtrPage);
6332	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6333	return VBOXSTRICTRC_VAL(rcStrict);
6334	}
6335
6336	int rc = hmR0SvmInterpretInvlpg(pVM, pVCpu, pCtx); /* Updates RIP if successful. */
6337	Assert(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER);
6338	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6339	return rc;
6340	}
6341
6342
6343	/**
6344	* \#VMEXIT handler for HLT (SVM_EXIT_HLT). Conditional \#VMEXIT.
6345	*/
6346	HMSVM_EXIT_DECL hmR0SvmExitHlt(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6347	{
6348	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6349
6350	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 1);
6351	int rc = EMShouldContinueAfterHalt(pVCpu, pCtx) ? VINF_SUCCESS : VINF_EM_HALT;
6352	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6353	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitHlt);
6354	if (rc != VINF_SUCCESS)
6355	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHltToR3);
6356	return rc;
6357	}
6358
6359
6360	/**
6361	* \#VMEXIT handler for MONITOR (SVM_EXIT_MONITOR). Conditional \#VMEXIT.
6362	*/
6363	HMSVM_EXIT_DECL hmR0SvmExitMonitor(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6364	{
6365	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6366	int rc = EMInterpretMonitor(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
6367	if (RT_LIKELY(rc == VINF_SUCCESS))
6368	{
6369	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
6370	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6371	}
6372	else
6373	{
6374	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMonitor: EMInterpretMonitor failed with %Rrc\n", rc));
6375	rc = VERR_EM_INTERPRETER;
6376	}
6377	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMonitor);
6378	return rc;
6379	}
6380
6381
6382	/**
6383	* \#VMEXIT handler for MWAIT (SVM_EXIT_MWAIT). Conditional \#VMEXIT.
6384	*/
6385	HMSVM_EXIT_DECL hmR0SvmExitMwait(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6386	{
6387	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6388	VBOXSTRICTRC rc2 = EMInterpretMWait(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
6389	int rc = VBOXSTRICTRC_VAL(rc2);
6390	if ( rc == VINF_EM_HALT
6391	\|\| rc == VINF_SUCCESS)
6392	{
6393	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
6394
6395	if ( rc == VINF_EM_HALT
6396	&& EMMonitorWaitShouldContinue(pVCpu, pCtx))
6397	{
6398	rc = VINF_SUCCESS;
6399	}
6400	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6401	}
6402	else
6403	{
6404	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMwait: EMInterpretMWait failed with %Rrc\n", rc));
6405	rc = VERR_EM_INTERPRETER;
6406	}
6407	AssertMsg(rc == VINF_SUCCESS \|\| rc == VINF_EM_HALT \|\| rc == VERR_EM_INTERPRETER,
6408	("hmR0SvmExitMwait: EMInterpretMWait failed rc=%Rrc\n", rc));
6409	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMwait);
6410	return rc;
6411	}
6412
6413
6414	/**
6415	* \#VMEXIT handler for shutdown (triple-fault) (SVM_EXIT_SHUTDOWN). Conditional
6416	* \#VMEXIT.
6417	*/
6418	HMSVM_EXIT_DECL hmR0SvmExitShutdown(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6419	{
6420	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6421	return VINF_EM_RESET;
6422	}
6423
6424
6425	/**
6426	* \#VMEXIT handler for unexpected exits. Conditional \#VMEXIT.
6427	*/
6428	HMSVM_EXIT_DECL hmR0SvmExitUnexpected(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6429	{
6430	RT_NOREF(pCtx);
6431	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6432	AssertMsgFailed(("hmR0SvmExitUnexpected: ExitCode=%#RX64 uExitInfo1=%#RX64 uExitInfo2=%#RX64\n", pSvmTransient->u64ExitCode,
6433	pVmcb->ctrl.u64ExitInfo1, pVmcb->ctrl.u64ExitInfo2));
6434	RT_NOREF(pVmcb);
6435	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
6436	return VERR_SVM_UNEXPECTED_EXIT;
6437	}
6438
6439
6440	/**
6441	* \#VMEXIT handler for CRx reads (SVM_EXIT_READ_CR*). Conditional \#VMEXIT.
6442	*/
6443	HMSVM_EXIT_DECL hmR0SvmExitReadCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6444	{
6445	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6446
6447	Log4(("hmR0SvmExitReadCRx: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
6448	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCRxRead[pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0]);
6449
6450	bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu, pCtx);
6451	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6452	if ( fSupportsDecodeAssists
6453	&& fSupportsNextRipSave)
6454	{
6455	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6456	bool const fMovCRx = RT_BOOL(pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_MASK);
6457	if (fMovCRx)
6458	{
6459	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
6460	uint8_t const iCrReg = pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0;
6461	uint8_t const iGReg = pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_GPR_NUMBER;
6462	VBOXSTRICTRC rcStrict = IEMExecDecodedMovCRxRead(pVCpu, cbInstr, iGReg, iCrReg);
6463	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6464	return VBOXSTRICTRC_VAL(rcStrict);
6465	}
6466	/* else: SMSW instruction, fall back below to IEM for this. */
6467	}
6468
6469	VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
6470	int rc = VBOXSTRICTRC_VAL(rc2);
6471	AssertMsg(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3,
6472	("hmR0SvmExitReadCRx: EMInterpretInstruction failed rc=%Rrc\n", rc));
6473	Assert((pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0) <= 15);
6474	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6475	return rc;
6476	}
6477
6478
6479	/**
6480	* \#VMEXIT handler for CRx writes (SVM_EXIT_WRITE_CR*). Conditional \#VMEXIT.
6481	*/
6482	HMSVM_EXIT_DECL hmR0SvmExitWriteCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6483	{
6484	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6485
6486	uint64_t const uExitCode = pSvmTransient->u64ExitCode;
6487	uint8_t const iCrReg = uExitCode == SVM_EXIT_CR0_SEL_WRITE ? 0 : (pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0);
6488	Assert(iCrReg <= 15);
6489
6490	VBOXSTRICTRC rcStrict = VERR_SVM_IPE_5;
6491	bool fDecodedInstr = false;
6492	bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu, pCtx);
6493	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6494	if ( fSupportsDecodeAssists
6495	&& fSupportsNextRipSave)
6496	{
6497	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6498	bool const fMovCRx = RT_BOOL(pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_MASK);
6499	if (fMovCRx)
6500	{
6501	uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
6502	uint8_t const iGReg = pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_GPR_NUMBER;
6503	Log4(("hmR0SvmExitWriteCRx: Mov CR%u w/ iGReg=%#x\n", iCrReg, iGReg));
6504	rcStrict = IEMExecDecodedMovCRxWrite(pVCpu, cbInstr, iCrReg, iGReg);
6505	fDecodedInstr = true;
6506	}
6507	/* else: LMSW or CLTS instruction, fall back below to IEM for this. */
6508	}
6509
6510	if (!fDecodedInstr)
6511	{
6512	Log4(("hmR0SvmExitWriteCRx: iCrReg=%#x\n", iCrReg));
6513	rcStrict = IEMExecOneBypassEx(pVCpu, CPUMCTX2CORE(pCtx), NULL);
6514	if (RT_UNLIKELY( rcStrict == VERR_IEM_ASPECT_NOT_IMPLEMENTED
6515	\|\| rcStrict == VERR_IEM_INSTR_NOT_IMPLEMENTED))
6516	rcStrict = VERR_EM_INTERPRETER;
6517	}
6518
6519	if (rcStrict == VINF_SUCCESS)
6520	{
6521	switch (iCrReg)
6522	{
6523	case 0: /* CR0. */
6524	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
6525	break;
6526
6527	case 3: /* CR3. */
6528	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR3);
6529	break;
6530
6531	case 4: /* CR4. */
6532	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR4);
6533	break;
6534
6535	case 8: /* CR8 (TPR). */
6536	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
6537	break;
6538
6539	default:
6540	AssertMsgFailed(("hmR0SvmExitWriteCRx: Invalid/Unexpected Write-CRx exit. u64ExitCode=%#RX64 %#x\n",
6541	pSvmTransient->u64ExitCode, iCrReg));
6542	break;
6543	}
6544	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6545	}
6546	else
6547	Assert(rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_PGM_CHANGE_MODE \|\| rcStrict == VINF_PGM_SYNC_CR3);
6548	return VBOXSTRICTRC_TODO(rcStrict);
6549	}
6550
6551
6552	/**
6553	* \#VMEXIT handler for MSR read and writes (SVM_EXIT_MSR). Conditional
6554	* \#VMEXIT.
6555	*/
6556	HMSVM_EXIT_DECL hmR0SvmExitMsr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6557	{
6558	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6559	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6560	PVM pVM = pVCpu->CTX_SUFF(pVM);
6561
6562	int rc;
6563	if (pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
6564	{
6565	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
6566	Log4(("MSR Write: idMsr=%#RX32\n", pCtx->ecx));
6567
6568	/* Handle TPR patching; intercepted LSTAR write. */
6569	if ( pVM->hm.s.fTPRPatchingActive
6570	&& pCtx->ecx == MSR_K8_LSTAR)
6571	{
6572	if ((pCtx->eax & 0xff) != pSvmTransient->u8GuestTpr)
6573	{
6574	/* Our patch code uses LSTAR for TPR caching for 32-bit guests. */
6575	int rc2 = APICSetTpr(pVCpu, pCtx->eax & 0xff);
6576	AssertRC(rc2);
6577	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
6578	}
6579	rc = VINF_SUCCESS;
6580	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
6581	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6582	return rc;
6583	}
6584
6585	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6586	if (fSupportsNextRipSave)
6587	{
6588	rc = EMInterpretWrmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
6589	if (RT_LIKELY(rc == VINF_SUCCESS))
6590	{
6591	pCtx->rip = pVmcb->ctrl.u64NextRIP;
6592	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6593	}
6594	else
6595	AssertMsg( rc == VERR_EM_INTERPRETER
6596	\|\| rc == VINF_CPUM_R3_MSR_WRITE, ("hmR0SvmExitMsr: EMInterpretWrmsr failed rc=%Rrc\n", rc));
6597	}
6598	else
6599	{
6600	rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */));
6601	if (RT_LIKELY(rc == VINF_SUCCESS))
6602	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc); /* RIP updated by EMInterpretInstruction(). */
6603	else
6604	AssertMsg( rc == VERR_EM_INTERPRETER
6605	\|\| rc == VINF_CPUM_R3_MSR_WRITE, ("hmR0SvmExitMsr: WrMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
6606	}
6607
6608	if (rc == VINF_SUCCESS)
6609	{
6610	/* If this is an X2APIC WRMSR access, update the APIC state as well. */
6611	if ( pCtx->ecx >= MSR_IA32_X2APIC_START
6612	&& pCtx->ecx <= MSR_IA32_X2APIC_END)
6613	{
6614	/*
6615	* We've already saved the APIC related guest-state (TPR) in hmR0SvmPostRunGuest(). When full APIC register
6616	* virtualization is implemented we'll have to make sure APIC state is saved from the VMCB before
6617	* EMInterpretWrmsr() changes it.
6618	*/
6619	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
6620	}
6621	else
6622	{
6623	switch (pCtx->ecx)
6624	{
6625	case MSR_K6_EFER: HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_EFER_MSR); break;
6626	case MSR_IA32_TSC: pSvmTransient->fUpdateTscOffsetting = true; break;
6627	case MSR_K8_FS_BASE:
6628	case MSR_K8_GS_BASE: HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS); break;
6629	case MSR_IA32_SYSENTER_CS: HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_SYSENTER_CS_MSR); break;
6630	case MSR_IA32_SYSENTER_EIP: HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_SYSENTER_EIP_MSR); break;
6631	case MSR_IA32_SYSENTER_ESP: HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_SYSENTER_ESP_MSR); break;
6632	}
6633	}
6634	}
6635	}
6636	else
6637	{
6638	/* MSR Read access. */
6639	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
6640	Assert(pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_READ);
6641	Log4(("MSR Read: idMsr=%#RX32\n", pCtx->ecx));
6642
6643	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6644	if (fSupportsNextRipSave)
6645	{
6646	rc = EMInterpretRdmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
6647	if (RT_LIKELY(rc == VINF_SUCCESS))
6648	{
6649	pCtx->rip = pVmcb->ctrl.u64NextRIP;
6650	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6651	}
6652	else
6653	AssertMsg( rc == VERR_EM_INTERPRETER
6654	\|\| rc == VINF_CPUM_R3_MSR_READ, ("hmR0SvmExitMsr: EMInterpretRdmsr failed rc=%Rrc\n", rc));
6655	}
6656	else
6657	{
6658	rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0));
6659	if (RT_UNLIKELY(rc != VINF_SUCCESS))
6660	{
6661	AssertMsg( rc == VERR_EM_INTERPRETER
6662	\|\| rc == VINF_CPUM_R3_MSR_READ, ("hmR0SvmExitMsr: RdMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
6663	}
6664	/* RIP updated by EMInterpretInstruction(). */
6665	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6666	}
6667	}
6668
6669	/* RIP has been updated by EMInterpret[Rd\|Wr]msr() or EMInterpretInstruction(). */
6670	return rc;
6671	}
6672
6673
6674	/**
6675	* \#VMEXIT handler for DRx read (SVM_EXIT_READ_DRx). Conditional \#VMEXIT.
6676	*/
6677	HMSVM_EXIT_DECL hmR0SvmExitReadDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6678	{
6679	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6680	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
6681
6682	/** @todo Stepping with nested-guest. */
6683	if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
6684	{
6685	/* We should -not- get this #VMEXIT if the guest's debug registers were active. */
6686	if (pSvmTransient->fWasGuestDebugStateActive)
6687	{
6688	AssertMsgFailed(("hmR0SvmExitReadDRx: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
6689	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
6690	return VERR_SVM_UNEXPECTED_EXIT;
6691	}
6692
6693	/*
6694	* Lazy DR0-3 loading.
6695	*/
6696	if (!pSvmTransient->fWasHyperDebugStateActive)
6697	{
6698	Assert(!DBGFIsStepping(pVCpu)); Assert(!pVCpu->hm.s.fSingleInstruction);
6699	Log5(("hmR0SvmExitReadDRx: Lazy loading guest debug registers\n"));
6700
6701	/* Don't intercept DRx read and writes. */
6702	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
6703	pVmcb->ctrl.u16InterceptRdDRx = 0;
6704	pVmcb->ctrl.u16InterceptWrDRx = 0;
6705	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
6706
6707	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
6708	VMMRZCallRing3Disable(pVCpu);
6709	HM_DISABLE_PREEMPT();
6710
6711	/* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
6712	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
6713	Assert(CPUMIsGuestDebugStateActive(pVCpu) \|\| HC_ARCH_BITS == 32);
6714
6715	HM_RESTORE_PREEMPT();
6716	VMMRZCallRing3Enable(pVCpu);
6717
6718	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
6719	return VINF_SUCCESS;
6720	}
6721	}
6722
6723	/*
6724	* Interpret the read/writing of DRx.
6725	*/
6726	/** @todo Decode assist. */
6727	VBOXSTRICTRC rc = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
6728	Log5(("hmR0SvmExitReadDRx: Emulated DRx access: rc=%Rrc\n", VBOXSTRICTRC_VAL(rc)));
6729	if (RT_LIKELY(rc == VINF_SUCCESS))
6730	{
6731	/* Not necessary for read accesses but whatever doesn't hurt for now, will be fixed with decode assist. */
6732	/** @todo CPUM should set this flag! */
6733	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
6734	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
6735	}
6736	else
6737	Assert(rc == VERR_EM_INTERPRETER);
6738	return VBOXSTRICTRC_TODO(rc);
6739	}
6740
6741
6742	/**
6743	* \#VMEXIT handler for DRx write (SVM_EXIT_WRITE_DRx). Conditional \#VMEXIT.
6744	*/
6745	HMSVM_EXIT_DECL hmR0SvmExitWriteDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6746	{
6747	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6748	/* For now it's the same since we interpret the instruction anyway. Will change when using of Decode Assist is implemented. */
6749	int rc = hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
6750	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
6751	STAM_COUNTER_DEC(&pVCpu->hm.s.StatExitDRxRead);
6752	return rc;
6753	}
6754
6755
6756	/**
6757	* \#VMEXIT handler for XCRx write (SVM_EXIT_XSETBV). Conditional \#VMEXIT.
6758	*/
6759	HMSVM_EXIT_DECL hmR0SvmExitXsetbv(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6760	{
6761	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6762
6763	/** @todo decode assists... */
6764	VBOXSTRICTRC rcStrict = IEMExecOne(pVCpu);
6765	if (rcStrict == VINF_IEM_RAISED_XCPT)
6766	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
6767
6768	pVCpu->hm.s.fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
6769	Log4(("hmR0SvmExitXsetbv: New XCR0=%#RX64 fLoadSaveGuestXcr0=%d (cr4=%RX64) rcStrict=%Rrc\n",
6770	pCtx->aXcr[0], pVCpu->hm.s.fLoadSaveGuestXcr0, pCtx->cr4, VBOXSTRICTRC_VAL(rcStrict)));
6771
6772	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6773	return VBOXSTRICTRC_TODO(rcStrict);
6774	}
6775
6776
6777	/**
6778	* \#VMEXIT handler for I/O instructions (SVM_EXIT_IOIO). Conditional \#VMEXIT.
6779	*/
6780	HMSVM_EXIT_DECL hmR0SvmExitIOInstr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
6781	{
6782	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
6783
6784	/* I/O operation lookup arrays. */
6785	static uint32_t const s_aIOSize[8] = { 0, 1, 2, 0, 4, 0, 0, 0 }; /* Size of the I/O accesses in bytes. */
6786	static uint32_t const s_aIOOpAnd[8] = { 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 }; /* AND masks for saving
6787	the result (in AL/AX/EAX). */
6788	Log4(("hmR0SvmExitIOInstr: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
6789
6790	PVM pVM = pVCpu->CTX_SUFF(pVM);
6791	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
6792
6793	/* Refer AMD spec. 15.10.2 "IN and OUT Behaviour" and Figure 15-2. "EXITINFO1 for IOIO Intercept" for the format. */
6794	SVMIOIOEXITINFO IoExitInfo;
6795	IoExitInfo.u = (uint32_t)pVmcb->ctrl.u64ExitInfo1;
6796	uint32_t uIOWidth = (IoExitInfo.u >> 4) & 0x7;
6797	uint32_t cbValue = s_aIOSize[uIOWidth];
6798	uint32_t uAndVal = s_aIOOpAnd[uIOWidth];
6799
6800	if (RT_UNLIKELY(!cbValue))
6801	{
6802	AssertMsgFailed(("hmR0SvmExitIOInstr: Invalid IO operation. uIOWidth=%u\n", uIOWidth));
6803	return VERR_EM_INTERPRETER;
6804	}
6805
6806	VBOXSTRICTRC rcStrict;
6807	bool fUpdateRipAlready = false;
6808	if (IoExitInfo.n.u1Str)
6809	{
6810	#ifdef VBOX_WITH_2ND_IEM_STEP
6811	/* INS/OUTS - I/O String instruction. */
6812	/** @todo Huh? why can't we use the segment prefix information given by AMD-V
6813	* in EXITINFO1? Investigate once this thing is up and running. */
6814	Log4(("CS:RIP=%04x:%08RX64 %#06x/%u %c str\n", pCtx->cs.Sel, pCtx->rip, IoExitInfo.n.u16Port, cbValue,
6815	IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? 'w' : 'r'));
6816	AssertReturn(pCtx->dx == IoExitInfo.n.u16Port, VERR_SVM_IPE_2);
6817	static IEMMODE const s_aenmAddrMode[8] =
6818	{
6819	(IEMMODE)-1, IEMMODE_16BIT, IEMMODE_32BIT, (IEMMODE)-1, IEMMODE_64BIT, (IEMMODE)-1, (IEMMODE)-1, (IEMMODE)-1
6820	};
6821	IEMMODE enmAddrMode = s_aenmAddrMode[(IoExitInfo.u >> 7) & 0x7];
6822	if (enmAddrMode != (IEMMODE)-1)
6823	{
6824	uint64_t cbInstr = pVmcb->ctrl.u64ExitInfo2 - pCtx->rip;
6825	if (cbInstr <= 15 && cbInstr >= 1)
6826	{
6827	Assert(cbInstr >= 1U + IoExitInfo.n.u1Rep);
6828	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
6829	{
6830	/* Don't know exactly how to detect whether u3Seg is valid, currently
6831	only enabling it for Bulldozer and later with NRIP. OS/2 broke on
6832	2384 Opterons when only checking NRIP. */
6833	bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
6834	if ( fSupportsNextRipSave
6835	&& pVM->cpum.ro.GuestFeatures.enmMicroarch >= kCpumMicroarch_AMD_15h_First)
6836	{
6837	AssertMsg(IoExitInfo.n.u3Seg == X86_SREG_DS \|\| cbInstr > 1U + IoExitInfo.n.u1Rep,
6838	("u32Seg=%d cbInstr=%d u1REP=%d", IoExitInfo.n.u3Seg, cbInstr, IoExitInfo.n.u1Rep));
6839	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1Rep, (uint8_t)cbInstr,
6840	IoExitInfo.n.u3Seg, true /fIoChecked/);
6841	}
6842	else if (cbInstr == 1U + IoExitInfo.n.u1Rep)
6843	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1Rep, (uint8_t)cbInstr,
6844	X86_SREG_DS, true /fIoChecked/);
6845	else
6846	rcStrict = IEMExecOne(pVCpu);
6847	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
6848	}
6849	else
6850	{
6851	AssertMsg(IoExitInfo.n.u3Seg == X86_SREG_ES /=0/, ("%#x\n", IoExitInfo.n.u3Seg));
6852	rcStrict = IEMExecStringIoRead(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1Rep, (uint8_t)cbInstr,
6853	true /fIoChecked/);
6854	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
6855	}
6856	}
6857	else
6858	{
6859	AssertMsgFailed(("rip=%RX64 nrip=%#RX64 cbInstr=%#RX64\n", pCtx->rip, pVmcb->ctrl.u64ExitInfo2, cbInstr));
6860	rcStrict = IEMExecOne(pVCpu);
6861	}
6862	}
6863	else
6864	{
6865	AssertMsgFailed(("IoExitInfo=%RX64\n", IoExitInfo.u));
6866	rcStrict = IEMExecOne(pVCpu);
6867	}
6868	fUpdateRipAlready = true;
6869
6870	#else
6871	/* INS/OUTS - I/O String instruction. */
6872	PDISCPUSTATE pDis = &pVCpu->hm.s.DisState;
6873
6874	/** @todo Huh? why can't we use the segment prefix information given by AMD-V
6875	* in EXITINFO1? Investigate once this thing is up and running. */
6876
6877	rcStrict = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL);
6878	if (rcStrict == VINF_SUCCESS)
6879	{
6880	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
6881	{
6882	rcStrict = IOMInterpretOUTSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
6883	(DISCPUMODE)pDis->uAddrMode, cbValue);
6884	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
6885	}
6886	else
6887	{
6888	rcStrict = IOMInterpretINSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
6889	(DISCPUMODE)pDis->uAddrMode, cbValue);
6890	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
6891	}
6892	}
6893	else
6894	rcStrict = VINF_EM_RAW_EMULATE_INSTR;
6895	#endif
6896	}
6897	else
6898	{
6899	/* IN/OUT - I/O instruction. */
6900	Assert(!IoExitInfo.n.u1Rep);
6901
6902	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
6903	{
6904	rcStrict = IOMIOPortWrite(pVM, pVCpu, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, cbValue);
6905	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
6906	}
6907	else
6908	{
6909	uint32_t u32Val = 0;
6910	rcStrict = IOMIOPortRead(pVM, pVCpu, IoExitInfo.n.u16Port, &u32Val, cbValue);
6911	if (IOM_SUCCESS(rcStrict))
6912	{
6913	/* Save result of I/O IN instr. in AL/AX/EAX. */
6914	/** @todo r=bird: 32-bit op size should clear high bits of rax! */
6915	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
6916	}
6917	else if (rcStrict == VINF_IOM_R3_IOPORT_READ)
6918	HMR0SavePendingIOPortRead(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
6919
6920	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
6921	}
6922	}
6923
6924	if (IOM_SUCCESS(rcStrict))
6925	{
6926	/* AMD-V saves the RIP of the instruction following the IO instruction in EXITINFO2. */
6927	if (!fUpdateRipAlready)
6928	pCtx->rip = pVmcb->ctrl.u64ExitInfo2;
6929
6930	/*
6931	* If any I/O breakpoints are armed, we need to check if one triggered
6932	* and take appropriate action.
6933	* Note that the I/O breakpoint type is undefined if CR4.DE is 0.
6934	*/
6935	/** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
6936	* execution engines about whether hyper BPs and such are pending. */
6937	uint32_t const uDr7 = pCtx->dr[7];
6938	if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
6939	&& X86_DR7_ANY_RW_IO(uDr7)
6940	&& (pCtx->cr4 & X86_CR4_DE))
6941	\|\| DBGFBpIsHwIoArmed(pVM)))
6942	{
6943	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
6944	VMMRZCallRing3Disable(pVCpu);
6945	HM_DISABLE_PREEMPT();
6946
6947	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
6948	CPUMR0DebugStateMaybeSaveGuest(pVCpu, false /fDr6/);
6949
6950	VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, pCtx, IoExitInfo.n.u16Port, cbValue);
6951	if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
6952	{
6953	/* Raise #DB. */
6954	pVmcb->guest.u64DR6 = pCtx->dr[6];
6955	pVmcb->guest.u64DR7 = pCtx->dr[7];
6956	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
6957	hmR0SvmSetPendingXcptDB(pVCpu);
6958	}
6959	/* rcStrict is VINF_SUCCESS, VINF_IOM_R3_IOPORT_COMMIT_WRITE, or in [VINF_EM_FIRST..VINF_EM_LAST],
6960	however we can ditch VINF_IOM_R3_IOPORT_COMMIT_WRITE as it has VMCPU_FF_IOM as backup. */
6961	else if ( rcStrict2 != VINF_SUCCESS
6962	&& (rcStrict == VINF_SUCCESS \|\| rcStrict2 < rcStrict))
6963	rcStrict = rcStrict2;
6964	AssertCompile(VINF_EM_LAST < VINF_IOM_R3_IOPORT_COMMIT_WRITE);
6965
6966	HM_RESTORE_PREEMPT();
6967	VMMRZCallRing3Enable(pVCpu);
6968	}
6969
6970	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
6971	}
6972
6973	#ifdef VBOX_STRICT
6974	if (rcStrict == VINF_IOM_R3_IOPORT_READ)
6975	Assert(IoExitInfo.n.u1Type == SVM_IOIO_READ);
6976	else if (rcStrict == VINF_IOM_R3_IOPORT_WRITE \|\| rcStrict == VINF_IOM_R3_IOPORT_COMMIT_WRITE)
6977	Assert(IoExitInfo.n.u1Type == SVM_IOIO_WRITE);
6978	else
6979	{
6980	/** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
6981	* statuses, that the VMM device and some others may return. See
6982	* IOM_SUCCESS() for guidance. */
6983	AssertMsg( RT_FAILURE(rcStrict)
6984	\|\| rcStrict == VINF_SUCCESS
6985	\|\| rcStrict == VINF_EM_RAW_EMULATE_INSTR
6986	\|\| rcStrict == VINF_EM_DBG_BREAKPOINT
6987	\|\| rcStrict == VINF_EM_RAW_GUEST_TRAP
6988	\|\| rcStrict == VINF_EM_RAW_TO_R3
6989	\|\| rcStrict == VINF_TRPM_XCPT_DISPATCHED
6990	\|\| rcStrict == VINF_EM_TRIPLE_FAULT, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
6991	}
6992	#endif
6993	return VBOXSTRICTRC_TODO(rcStrict);
6994	}
6995
6996
6997	/**
6998	* \#VMEXIT handler for Nested Page-faults (SVM_EXIT_NPF). Conditional \#VMEXIT.
6999	*/
7000	HMSVM_EXIT_DECL hmR0SvmExitNestedPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7001	{
7002	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7003	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
7004
7005	PVM pVM = pVCpu->CTX_SUFF(pVM);
7006	Assert(pVM->hm.s.fNestedPaging);
7007
7008	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7009
7010	/* See AMD spec. 15.25.6 "Nested versus Guest Page Faults, Fault Ordering" for VMCB details for #NPF. */
7011	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
7012	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1; /** @todo Make it more explicit that high bits can be non-zero. */
7013	RTGCPHYS GCPhysFaultAddr = pVmcb->ctrl.u64ExitInfo2;
7014
7015	Log4(("#NPF at CS:RIP=%04x:%#RX64 faultaddr=%RGp errcode=%#x \n", pCtx->cs.Sel, pCtx->rip, GCPhysFaultAddr, u32ErrCode));
7016
7017	#ifdef VBOX_HM_WITH_GUEST_PATCHING
7018	/* TPR patching for 32-bit guests, using the reserved bit in the page tables for MMIO regions. */
7019	if ( pVM->hm.s.fTprPatchingAllowed
7020	&& (GCPhysFaultAddr & PAGE_OFFSET_MASK) == XAPIC_OFF_TPR
7021	&& ( !(u32ErrCode & X86_TRAP_PF_P) /* Not present */
7022	\|\| (u32ErrCode & (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) /* MMIO page. */
7023	&& !CPUMIsGuestInLongModeEx(pCtx)
7024	&& !CPUMGetGuestCPL(pVCpu)
7025	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
7026	{
7027	RTGCPHYS GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
7028	GCPhysApicBase &= PAGE_BASE_GC_MASK;
7029
7030	if (GCPhysFaultAddr == GCPhysApicBase + XAPIC_OFF_TPR)
7031	{
7032	/* Only attempt to patch the instruction once. */
7033	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
7034	if (!pPatch)
7035	return VINF_EM_HM_PATCH_TPR_INSTR;
7036	}
7037	}
7038	#endif
7039
7040	/*
7041	* Determine the nested paging mode.
7042	*/
7043	PGMMODE enmNestedPagingMode;
7044	#if HC_ARCH_BITS == 32
7045	if (CPUMIsGuestInLongModeEx(pCtx))
7046	enmNestedPagingMode = PGMMODE_AMD64_NX;
7047	else
7048	#endif
7049	enmNestedPagingMode = PGMGetHostMode(pVM);
7050
7051	/*
7052	* MMIO optimization using the reserved (RSVD) bit in the guest page tables for MMIO pages.
7053	*/
7054	int rc;
7055	Assert((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
7056	if ((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P))
7057	{
7058	/* If event delivery causes an MMIO #NPF, go back to instruction emulation as
7059	otherwise injecting the original pending event would most likely cause the same MMIO #NPF. */
7060	if (pVCpu->hm.s.Event.fPending)
7061	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7062
7063	VBOXSTRICTRC rc2 = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmNestedPagingMode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr,
7064	u32ErrCode);
7065	rc = VBOXSTRICTRC_VAL(rc2);
7066
7067	/*
7068	* If we succeed, resume guest execution.
7069	* If we fail in interpreting the instruction because we couldn't get the guest physical address
7070	* of the page containing the instruction via the guest's page tables (we would invalidate the guest page
7071	* in the host TLB), resume execution which would cause a guest page fault to let the guest handle this
7072	* weird case. See @bugref{6043}.
7073	*/
7074	if ( rc == VINF_SUCCESS
7075	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
7076	\|\| rc == VERR_PAGE_NOT_PRESENT)
7077	{
7078	/* Successfully handled MMIO operation. */
7079	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_APIC_STATE);
7080	rc = VINF_SUCCESS;
7081	}
7082	return rc;
7083	}
7084
7085	TRPMAssertXcptPF(pVCpu, GCPhysFaultAddr, u32ErrCode);
7086	rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmNestedPagingMode, u32ErrCode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr);
7087	TRPMResetTrap(pVCpu);
7088
7089	Log4(("#NPF: PGMR0Trap0eHandlerNestedPaging returned %Rrc CS:RIP=%04x:%#RX64\n", rc, pCtx->cs.Sel, pCtx->rip));
7090
7091	/*
7092	* Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}.
7093	*/
7094	if ( rc == VINF_SUCCESS
7095	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
7096	\|\| rc == VERR_PAGE_NOT_PRESENT)
7097	{
7098	/* We've successfully synced our shadow page tables. */
7099	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
7100	rc = VINF_SUCCESS;
7101	}
7102
7103	return rc;
7104	}
7105
7106
7107	/**
7108	* \#VMEXIT handler for virtual interrupt (SVM_EXIT_VINTR). Conditional
7109	* \#VMEXIT.
7110	*/
7111	HMSVM_EXIT_DECL hmR0SvmExitVIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7112	{
7113	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7114	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
7115
7116	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
7117	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7118	hmR0SvmClearIntWindowExiting(pVCpu, pVmcb, pCtx);
7119
7120	/* Deliver the pending interrupt via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
7121	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
7122	return VINF_SUCCESS;
7123	}
7124
7125
7126	/**
7127	* \#VMEXIT handler for task switches (SVM_EXIT_TASK_SWITCH). Conditional
7128	* \#VMEXIT.
7129	*/
7130	HMSVM_EXIT_DECL hmR0SvmExitTaskSwitch(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7131	{
7132	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7133
7134	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7135
7136	#ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
7137	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
7138	#endif
7139
7140	/* Check if this task-switch occurred while delivering an event through the guest IDT. */
7141	if (pVCpu->hm.s.Event.fPending) /* Can happen with exceptions/NMI. See @bugref{8411}. */
7142	{
7143	/*
7144	* AMD-V provides us with the exception which caused the TS; we collect
7145	* the information in the call to hmR0SvmCheckExitDueToEventDelivery.
7146	*/
7147	Log4(("hmR0SvmExitTaskSwitch: TS occurred during event delivery.\n"));
7148	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
7149	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7150	}
7151
7152	/** @todo Emulate task switch someday, currently just going back to ring-3 for
7153	* emulation. */
7154	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
7155	return VERR_EM_INTERPRETER;
7156	}
7157
7158
7159	/**
7160	* \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
7161	*/
7162	HMSVM_EXIT_DECL hmR0SvmExitVmmCall(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7163	{
7164	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7165	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitVmcall);
7166
7167	bool fRipUpdated;
7168	VBOXSTRICTRC rcStrict = HMSvmVmmcall(pVCpu, pCtx, &fRipUpdated);
7169	if (RT_SUCCESS(rcStrict))
7170	{
7171	/* Only update the RIP if we're continuing guest execution and not
7172	in the case of say VINF_GIM_R3_HYPERCALL. */
7173	if ( rcStrict == VINF_SUCCESS
7174	&& !fRipUpdated)
7175	{
7176	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3 /* cbInstr */);
7177	}
7178
7179	/* If the hypercall or TPR patching changes anything other than guest's general-purpose registers,
7180	we would need to reload the guest changed bits here before VM-entry. */
7181	return VBOXSTRICTRC_VAL(rcStrict);
7182	}
7183
7184	hmR0SvmSetPendingXcptUD(pVCpu);
7185	return VINF_SUCCESS;
7186	}
7187
7188
7189	/**
7190	* \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
7191	*/
7192	HMSVM_EXIT_DECL hmR0SvmExitPause(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7193	{
7194	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7195	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitPause);
7196	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
7197	/** @todo The guest has likely hit a contended spinlock. We might want to
7198	* poke a schedule different guest VCPU. */
7199	return VINF_EM_RAW_INTERRUPT;
7200	}
7201
7202
7203	/**
7204	* \#VMEXIT handler for FERR intercept (SVM_EXIT_FERR_FREEZE). Conditional
7205	* \#VMEXIT.
7206	*/
7207	HMSVM_EXIT_DECL hmR0SvmExitFerrFreeze(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7208	{
7209	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7210	Assert(!(pCtx->cr0 & X86_CR0_NE));
7211
7212	Log4(("hmR0SvmExitFerrFreeze: Raising IRQ 13 in response to #FERR\n"));
7213	return PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13 /* u8Irq /, 1 / u8Level /, 0 / uTagSrc */);
7214	}
7215
7216
7217	/**
7218	* \#VMEXIT handler for IRET (SVM_EXIT_IRET). Conditional \#VMEXIT.
7219	*/
7220	HMSVM_EXIT_DECL hmR0SvmExitIret(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7221	{
7222	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7223
7224	/* Clear NMI blocking. */
7225	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
7226	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
7227
7228	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
7229	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7230	hmR0SvmClearCtrlIntercept(pVCpu, pCtx, pVmcb, SVM_CTRL_INTERCEPT_IRET);
7231
7232	/* Deliver the pending NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
7233	return VINF_SUCCESS;
7234	}
7235
7236
7237	/**
7238	* \#VMEXIT handler for page-fault exceptions (SVM_EXIT_XCPT_14).
7239	* Conditional \#VMEXIT.
7240	*/
7241	HMSVM_EXIT_DECL hmR0SvmExitXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7242	{
7243	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7244	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
7245
7246	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7247
7248	/* See AMD spec. 15.12.15 "#PF (Page Fault)". */
7249	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
7250	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
7251	RTGCUINTPTR uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
7252	PVM pVM = pVCpu->CTX_SUFF(pVM);
7253
7254	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(HMSVM_ALWAYS_TRAP_PF)
7255	if (pVM->hm.s.fNestedPaging)
7256	{
7257	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
7258	if (!pSvmTransient->fVectoringDoublePF)
7259	{
7260	/* A genuine guest #PF, reflect it to the guest. */
7261	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
7262	Log4(("#PF: Guest page fault at %04X:%RGv FaultAddr=%RGv ErrCode=%#x\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip,
7263	uFaultAddress, u32ErrCode));
7264	}
7265	else
7266	{
7267	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
7268	hmR0SvmSetPendingXcptDF(pVCpu);
7269	Log4(("Pending #DF due to vectoring #PF. NP\n"));
7270	}
7271	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
7272	return VINF_SUCCESS;
7273	}
7274	#endif
7275
7276	Assert(!pVM->hm.s.fNestedPaging);
7277
7278	#ifdef VBOX_HM_WITH_GUEST_PATCHING
7279	/* Shortcut for APIC TPR reads and writes; only applicable to 32-bit guests. */
7280	if ( pVM->hm.s.fTprPatchingAllowed
7281	&& (uFaultAddress & 0xfff) == XAPIC_OFF_TPR
7282	&& !(u32ErrCode & X86_TRAP_PF_P) /* Not present. */
7283	&& !CPUMIsGuestInLongModeEx(pCtx)
7284	&& !CPUMGetGuestCPL(pVCpu)
7285	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
7286	{
7287	RTGCPHYS GCPhysApicBase;
7288	GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
7289	GCPhysApicBase &= PAGE_BASE_GC_MASK;
7290
7291	/* Check if the page at the fault-address is the APIC base. */
7292	RTGCPHYS GCPhysPage;
7293	int rc2 = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL /* pfFlags */, &GCPhysPage);
7294	if ( rc2 == VINF_SUCCESS
7295	&& GCPhysPage == GCPhysApicBase)
7296	{
7297	/* Only attempt to patch the instruction once. */
7298	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
7299	if (!pPatch)
7300	return VINF_EM_HM_PATCH_TPR_INSTR;
7301	}
7302	}
7303	#endif
7304
7305	Log4(("#PF: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode %#RX32 cr3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
7306	pCtx->rip, u32ErrCode, pCtx->cr3));
7307
7308	/* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
7309	of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
7310	if (pSvmTransient->fVectoringPF)
7311	{
7312	Assert(pVCpu->hm.s.Event.fPending);
7313	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7314	}
7315
7316	TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
7317	int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
7318
7319	Log4(("#PF rc=%Rrc\n", rc));
7320
7321	if (rc == VINF_SUCCESS)
7322	{
7323	/* Successfully synced shadow pages tables or emulated an MMIO instruction. */
7324	TRPMResetTrap(pVCpu);
7325	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
7326	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
7327	return rc;
7328	}
7329	else if (rc == VINF_EM_RAW_GUEST_TRAP)
7330	{
7331	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
7332
7333	if (!pSvmTransient->fVectoringDoublePF)
7334	{
7335	/* It's a guest page fault and needs to be reflected to the guest. */
7336	u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
7337	TRPMResetTrap(pVCpu);
7338	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
7339	}
7340	else
7341	{
7342	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
7343	TRPMResetTrap(pVCpu);
7344	hmR0SvmSetPendingXcptDF(pVCpu);
7345	Log4(("#PF: Pending #DF due to vectoring #PF\n"));
7346	}
7347
7348	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
7349	return VINF_SUCCESS;
7350	}
7351
7352	TRPMResetTrap(pVCpu);
7353	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
7354	return rc;
7355	}
7356
7357
7358	/**
7359	* \#VMEXIT handler for undefined opcode (SVM_EXIT_XCPT_6).
7360	* Conditional \#VMEXIT.
7361	*/
7362	HMSVM_EXIT_DECL hmR0SvmExitXcptUD(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7363	{
7364	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7365	HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
7366
7367	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
7368	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
7369	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
7370
7371	int rc = VERR_SVM_UNEXPECTED_XCPT_EXIT;
7372	if (pVCpu->hm.s.fGIMTrapXcptUD)
7373	{
7374	uint8_t cbInstr = 0;
7375	VBOXSTRICTRC rcStrict = GIMXcptUD(pVCpu, pCtx, NULL /* pDis */, &cbInstr);
7376	if (rcStrict == VINF_SUCCESS)
7377	{
7378	/* #UD #VMEXIT does not have valid NRIP information, manually advance RIP. See @bugref{7270#c170}. */
7379	hmR0SvmAdvanceRipDumb(pVCpu, pCtx, cbInstr);
7380	rc = VINF_SUCCESS;
7381	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
7382	}
7383	else if (rcStrict == VINF_GIM_HYPERCALL_CONTINUING)
7384	rc = VINF_SUCCESS;
7385	else if (rcStrict == VINF_GIM_R3_HYPERCALL)
7386	rc = VINF_GIM_R3_HYPERCALL;
7387	else
7388	Assert(RT_FAILURE(VBOXSTRICTRC_VAL(rcStrict)));
7389	}
7390
7391	/* If the GIM #UD exception handler didn't succeed for some reason or wasn't needed, raise #UD. */
7392	if (RT_FAILURE(rc))
7393	{
7394	hmR0SvmSetPendingXcptUD(pVCpu);
7395	rc = VINF_SUCCESS;
7396	}
7397
7398	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD);
7399	return rc;
7400	}
7401
7402
7403	/**
7404	* \#VMEXIT handler for math-fault exceptions (SVM_EXIT_XCPT_16).
7405	* Conditional \#VMEXIT.
7406	*/
7407	HMSVM_EXIT_DECL hmR0SvmExitXcptMF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7408	{
7409	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7410
7411	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
7412	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7413	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
7414
7415	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
7416
7417	if (!(pCtx->cr0 & X86_CR0_NE))
7418	{
7419	PVM pVM = pVCpu->CTX_SUFF(pVM);
7420	PDISSTATE pDis = &pVCpu->hm.s.DisState;
7421	unsigned cbOp;
7422	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp);
7423	if (RT_SUCCESS(rc))
7424	{
7425	/* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
7426	rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13 /* u8Irq /, 1 / u8Level /, 0 / uTagSrc */);
7427	if (RT_SUCCESS(rc))
7428	pCtx->rip += cbOp;
7429	}
7430	else
7431	Log4(("hmR0SvmExitXcptMF: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
7432	return rc;
7433	}
7434
7435	hmR0SvmSetPendingXcptMF(pVCpu);
7436	return VINF_SUCCESS;
7437	}
7438
7439
7440	/**
7441	* \#VMEXIT handler for debug exceptions (SVM_EXIT_XCPT_1). Conditional
7442	* \#VMEXIT.
7443	*/
7444	HMSVM_EXIT_DECL hmR0SvmExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7445	{
7446	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7447
7448	/* If this #DB is the result of delivering an event, go back to the interpreter. */
7449	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7450	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
7451	{
7452	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
7453	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7454	}
7455
7456	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
7457
7458	/* This can be a fault-type #DB (instruction breakpoint) or a trap-type #DB (data breakpoint). However, for both cases
7459	DR6 and DR7 are updated to what the exception handler expects. See AMD spec. 15.12.2 "#DB (Debug)". */
7460	PVM pVM = pVCpu->CTX_SUFF(pVM);
7461	PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
7462	int rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVmcb->guest.u64DR6, pVCpu->hm.s.fSingleInstruction);
7463	if (rc == VINF_EM_RAW_GUEST_TRAP)
7464	{
7465	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> guest trap\n", pVmcb->guest.u64DR6));
7466	if (CPUMIsHyperDebugStateActive(pVCpu))
7467	CPUMSetGuestDR6(pVCpu, CPUMGetGuestDR6(pVCpu) \| pVmcb->guest.u64DR6);
7468
7469	/* Reflect the exception back to the guest. */
7470	hmR0SvmSetPendingXcptDB(pVCpu);
7471	rc = VINF_SUCCESS;
7472	}
7473
7474	/*
7475	* Update DR6.
7476	*/
7477	if (CPUMIsHyperDebugStateActive(pVCpu))
7478	{
7479	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> %Rrc\n", pVmcb->guest.u64DR6, rc));
7480	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
7481	pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
7482	}
7483	else
7484	{
7485	AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc));
7486	Assert(!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu));
7487	}
7488
7489	return rc;
7490	}
7491
7492
7493	/**
7494	* \#VMEXIT handler for alignment check exceptions (SVM_EXIT_XCPT_17).
7495	* Conditional \#VMEXIT.
7496	*/
7497	HMSVM_EXIT_DECL hmR0SvmExitXcptAC(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7498	{
7499	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7500
7501	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7502
7503	SVMEVENT Event;
7504	Event.u = 0;
7505	Event.n.u1Valid = 1;
7506	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7507	Event.n.u8Vector = X86_XCPT_AC;
7508	Event.n.u1ErrorCodeValid = 1;
7509	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7510	return VINF_SUCCESS;
7511	}
7512
7513
7514	/**
7515	* \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_XCPT_3).
7516	* Conditional \#VMEXIT.
7517	*/
7518	HMSVM_EXIT_DECL hmR0SvmExitXcptBP(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7519	{
7520	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7521
7522	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7523
7524	int rc = DBGFRZTrap03Handler(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
7525	if (rc == VINF_EM_RAW_GUEST_TRAP)
7526	{
7527	SVMEVENT Event;
7528	Event.u = 0;
7529	Event.n.u1Valid = 1;
7530	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7531	Event.n.u8Vector = X86_XCPT_BP;
7532	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7533	}
7534
7535	Assert(rc == VINF_SUCCESS \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_EM_DBG_BREAKPOINT);
7536	return rc;
7537	}
7538
7539
7540	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(VBOX_WITH_NESTED_HWVIRT)
7541	/**
7542	* \#VMEXIT handler for generic exceptions. Conditional \#VMEXIT.
7543	*/
7544	HMSVM_EXIT_DECL hmR0SvmExitXcptGeneric(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7545	{
7546	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7547
7548	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7549
7550	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7551	uint8_t const uVector = pVmcb->ctrl.u64ExitCode - SVM_EXIT_XCPT_0;
7552	uint32_t const uErrCode = pVmcb->ctrl.u64ExitInfo1;
7553	Assert(pSvmTransient->u64ExitCode == pVmcb->ctrl.u64ExitCode);
7554	Assert(uVector <= X86_XCPT_LAST);
7555	Log4(("hmR0SvmExitXcptGeneric: uVector=%#x uErrCode=%u\n", uVector, uErrCode));
7556
7557	SVMEVENT Event;
7558	Event.u = 0;
7559	Event.n.u1Valid = 1;
7560	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7561	Event.n.u8Vector = uVector;
7562	switch (uVector)
7563	{
7564	/* Shouldn't be here for reflecting #PFs (among other things, the fault address isn't passed along). */
7565	case X86_XCPT_PF: AssertMsgFailed(("hmR0SvmExitXcptGeneric: Unexpected exception")); return VERR_SVM_IPE_5;
7566	case X86_XCPT_DF:
7567	case X86_XCPT_TS:
7568	case X86_XCPT_NP:
7569	case X86_XCPT_SS:
7570	case X86_XCPT_GP:
7571	case X86_XCPT_AC:
7572	{
7573	Event.n.u1ErrorCodeValid = 1;
7574	Event.n.u32ErrorCode = uErrCode;
7575	break;
7576	}
7577	}
7578
7579	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7580	return VINF_SUCCESS;
7581	}
7582	#endif
7583
7584	#ifdef VBOX_WITH_NESTED_HWVIRT
7585	/**
7586	* \#VMEXIT handler for #PF occuring while in nested-guest execution
7587	* (SVM_EXIT_XCPT_14). Conditional \#VMEXIT.
7588	*/
7589	HMSVM_EXIT_DECL hmR0SvmExitXcptPFNested(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7590	{
7591	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7592
7593	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7594
7595	/* See AMD spec. 15.12.15 "#PF (Page Fault)". */
7596	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7597	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
7598	uint64_t const uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
7599
7600	Log4(("#PFNested: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode=%#RX32 CR3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
7601	pCtx->rip, u32ErrCode, pCtx->cr3));
7602
7603	/* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
7604	of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
7605	if (pSvmTransient->fVectoringPF)
7606	{
7607	Assert(pVCpu->hm.s.Event.fPending);
7608	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7609	}
7610
7611	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
7612
7613	TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
7614	int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
7615
7616	Log4(("#PFNested: rc=%Rrc\n", rc));
7617
7618	if (rc == VINF_SUCCESS)
7619	{
7620	/* Successfully synced shadow pages tables or emulated an MMIO instruction. */
7621	TRPMResetTrap(pVCpu);
7622	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
7623	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
7624	return rc;
7625	}
7626
7627	if (rc == VINF_EM_RAW_GUEST_TRAP)
7628	{
7629	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
7630
7631	if (!pSvmTransient->fVectoringDoublePF)
7632	{
7633	/* It's a nested-guest page fault and needs to be reflected to the nested-guest. */
7634	u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
7635	TRPMResetTrap(pVCpu);
7636	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
7637	}
7638	else
7639	{
7640	/* A nested-guest page-fault occurred during delivery of a page-fault. Inject #DF. */
7641	TRPMResetTrap(pVCpu);
7642	hmR0SvmSetPendingXcptDF(pVCpu);
7643	Log4(("#PF: Pending #DF due to vectoring #PF\n"));
7644	}
7645
7646	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
7647	return VINF_SUCCESS;
7648	}
7649
7650	TRPMResetTrap(pVCpu);
7651	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
7652	return rc;
7653	}
7654
7655
7656	/**
7657	* \#VMEXIT handler for CLGI (SVM_EXIT_CLGI). Conditional \#VMEXIT.
7658	*/
7659	HMSVM_EXIT_DECL hmR0SvmExitClgi(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7660	{
7661	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7662
7663	#ifdef VBOX_STRICT
7664	PCSVMVMCB pVmcbTmp = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7665	Assert(pVmcbTmp);
7666	Assert(!pVmcbTmp->ctrl.IntCtrl.n.u1VGifEnable);
7667	RT_NOREF(pVmcbTmp);
7668	#endif
7669
7670	/** @todo Stat. */
7671	/* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitClgi); */
7672	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
7673	VBOXSTRICTRC rcStrict = IEMExecDecodedClgi(pVCpu, cbInstr);
7674	return VBOXSTRICTRC_VAL(rcStrict);
7675	}
7676
7677
7678	/**
7679	* \#VMEXIT handler for STGI (SVM_EXIT_STGI). Conditional \#VMEXIT.
7680	*/
7681	HMSVM_EXIT_DECL hmR0SvmExitStgi(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7682	{
7683	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7684
7685	/*
7686	* When VGIF is not used we always intercept STGI instructions. When VGIF is used,
7687	* we only intercept STGI when events are pending for GIF to become 1.
7688	*/
7689	PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7690	if (pVmcb->ctrl.IntCtrl.n.u1VGifEnable)
7691	hmR0SvmClearCtrlIntercept(pVCpu, pCtx, pVmcb, SVM_CTRL_INTERCEPT_STGI);
7692
7693	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
7694	VBOXSTRICTRC rcStrict = IEMExecDecodedStgi(pVCpu, cbInstr);
7695	return VBOXSTRICTRC_VAL(rcStrict);
7696	}
7697
7698
7699	/**
7700	* \#VMEXIT handler for VMLOAD (SVM_EXIT_VMLOAD). Conditional \#VMEXIT.
7701	*/
7702	HMSVM_EXIT_DECL hmR0SvmExitVmload(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7703	{
7704	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7705
7706	#ifdef VBOX_STRICT
7707	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7708	Assert(pVmcb);
7709	Assert(!pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload);
7710	RT_NOREF(pVmcb);
7711	#endif
7712
7713	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
7714	VBOXSTRICTRC rcStrict = IEMExecDecodedVmload(pVCpu, cbInstr);
7715	if (rcStrict == VINF_SUCCESS)
7716	{
7717	/* We skip flagging changes made to LSTAR, STAR, SFMASK and other MSRs as they are always re-loaded. */
7718	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS
7719	\| HM_CHANGED_GUEST_TR
7720	\| HM_CHANGED_GUEST_LDTR);
7721	}
7722	return VBOXSTRICTRC_VAL(rcStrict);
7723	}
7724
7725
7726	/**
7727	* \#VMEXIT handler for VMSAVE (SVM_EXIT_VMSAVE). Conditional \#VMEXIT.
7728	*/
7729	HMSVM_EXIT_DECL hmR0SvmExitVmsave(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7730	{
7731	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7732
7733	#ifdef VBOX_STRICT
7734	PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
7735	Assert(pVmcb);
7736	Assert(!pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload);
7737	RT_NOREF(pVmcb);
7738	#endif
7739
7740	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
7741	VBOXSTRICTRC rcStrict = IEMExecDecodedVmsave(pVCpu, cbInstr);
7742	return VBOXSTRICTRC_VAL(rcStrict);
7743	}
7744
7745
7746	/**
7747	* \#VMEXIT handler for INVLPGA (SVM_EXIT_INVLPGA). Conditional \#VMEXIT.
7748	*/
7749	HMSVM_EXIT_DECL hmR0SvmExitInvlpga(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7750	{
7751	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7752	/** @todo Stat. */
7753	/* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpga); */
7754	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
7755	VBOXSTRICTRC rcStrict = IEMExecDecodedInvlpga(pVCpu, cbInstr);
7756	return VBOXSTRICTRC_VAL(rcStrict);
7757	}
7758
7759
7760	/**
7761	* \#VMEXIT handler for STGI (SVM_EXIT_VMRUN). Conditional \#VMEXIT.
7762	*/
7763	HMSVM_EXIT_DECL hmR0SvmExitVmrun(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7764	{
7765	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7766
7767	VBOXSTRICTRC rcStrict;
7768	uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
7769	rcStrict = IEMExecDecodedVmrun(pVCpu, cbInstr);
7770	Log4(("IEMExecDecodedVmrun: returned %d\n", VBOXSTRICTRC_VAL(rcStrict)));
7771	if (rcStrict == VINF_SUCCESS)
7772	{
7773	rcStrict = VINF_SVM_VMRUN;
7774	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
7775	}
7776	return VBOXSTRICTRC_VAL(rcStrict);
7777	}
7778
7779
7780	/**
7781	* Nested-guest \#VMEXIT handler for debug exceptions (SVM_EXIT_XCPT_1).
7782	* Unconditional \#VMEXIT.
7783	*/
7784	HMSVM_EXIT_DECL hmR0SvmNestedExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7785	{
7786	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7787
7788	/* If this #DB is the result of delivering an event, go back to the interpreter. */
7789	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7790	if (pVCpu->hm.s.Event.fPending)
7791	{
7792	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
7793	return VINF_EM_RAW_INJECT_TRPM_EVENT;
7794	}
7795
7796	hmR0SvmSetPendingXcptDB(pVCpu);
7797	return VINF_SUCCESS;
7798	}
7799
7800
7801	/**
7802	* Nested-guest \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_XCPT_3).
7803	* Conditional \#VMEXIT.
7804	*/
7805	HMSVM_EXIT_DECL hmR0SvmNestedExitXcptBP(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
7806	{
7807	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
7808
7809	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
7810
7811	SVMEVENT Event;
7812	Event.u = 0;
7813	Event.n.u1Valid = 1;
7814	Event.n.u3Type = SVM_EVENT_EXCEPTION;
7815	Event.n.u8Vector = X86_XCPT_BP;
7816	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
7817	return VINF_SUCCESS;
7818	}
7819
7820	#endif /* VBOX_WITH_NESTED_HWVIRT */
7821
7822
7823	/** @} */
7824

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source: vbox/trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp@ 72066

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