HMSVMR0.cpp@ 52934

Last change on this file since 52934 was 52655, checked in by vboxsync, 10 years ago
VMM/HMVMXR0,HMSVMR0: oops, forgot bugref number.
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1	/* $Id: HMSVMR0.cpp 52655 2014-09-09 14:03:59Z vboxsync $ */
2	/** @file
3	* HM SVM (AMD-V) - Host Context Ring-0.
4	*/
5
6	/*
7	* Copyright (C) 2013-2014 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	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_HM
22	#include <iprt/asm-amd64-x86.h>
23	#include <iprt/thread.h>
24
25	#include "HMInternal.h"
26	#include <VBox/vmm/vm.h>
27	#include "HMSVMR0.h"
28	#include <VBox/vmm/pdmapi.h>
29	#include <VBox/vmm/dbgf.h>
30	#include <VBox/vmm/iom.h>
31	#include <VBox/vmm/tm.h>
32	#include <VBox/vmm/gim.h>
33
34	#ifdef DEBUG_ramshankar
35	# define HMSVM_SYNC_FULL_GUEST_STATE
36	# define HMSVM_ALWAYS_TRAP_ALL_XCPTS
37	# define HMSVM_ALWAYS_TRAP_PF
38	# define HMSVM_ALWAYS_TRAP_TASK_SWITCH
39	#endif
40
41
42	/*******************************************************************************
43	* Defined Constants And Macros *
44	*******************************************************************************/
45	#ifdef VBOX_WITH_STATISTICS
46	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
47	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
48	if ((u64ExitCode) == SVM_EXIT_NPF) \
49	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf); \
50	else \
51	STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
52	} while (0)
53	#else
54	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
55	#endif
56
57	/** If we decide to use a function table approach this can be useful to
58	* switch to a "static DECLCALLBACK(int)". */
59	#define HMSVM_EXIT_DECL static int
60
61	/** @name Segment attribute conversion between CPU and AMD-V VMCB format.
62	*
63	* The CPU format of the segment attribute is described in X86DESCATTRBITS
64	* which is 16-bits (i.e. includes 4 bits of the segment limit).
65	*
66	* The AMD-V VMCB format the segment attribute is compact 12-bits (strictly
67	* only the attribute bits and nothing else). Upper 4-bits are unused.
68	*
69	* @{ */
70	#define HMSVM_CPU_2_VMCB_SEG_ATTR(a) ( ((a) & 0xff) \| (((a) & 0xf000) >> 4) )
71	#define HMSVM_VMCB_2_CPU_SEG_ATTR(a) ( ((a) & 0xff) \| (((a) & 0x0f00) << 4) )
72	/** @} */
73
74	/** @name Macros for loading, storing segment registers to/from the VMCB.
75	* @{ */
76	#define HMSVM_LOAD_SEG_REG(REG, reg) \
77	do \
78	{ \
79	Assert(pCtx->reg.fFlags & CPUMSELREG_FLAGS_VALID); \
80	Assert(pCtx->reg.ValidSel == pCtx->reg.Sel); \
81	pVmcb->guest.REG.u16Sel = pCtx->reg.Sel; \
82	pVmcb->guest.REG.u32Limit = pCtx->reg.u32Limit; \
83	pVmcb->guest.REG.u64Base = pCtx->reg.u64Base; \
84	pVmcb->guest.REG.u16Attr = HMSVM_CPU_2_VMCB_SEG_ATTR(pCtx->reg.Attr.u); \
85	} while (0)
86
87	#define HMSVM_SAVE_SEG_REG(REG, reg) \
88	do \
89	{ \
90	pMixedCtx->reg.Sel = pVmcb->guest.REG.u16Sel; \
91	pMixedCtx->reg.ValidSel = pVmcb->guest.REG.u16Sel; \
92	pMixedCtx->reg.fFlags = CPUMSELREG_FLAGS_VALID; \
93	pMixedCtx->reg.u32Limit = pVmcb->guest.REG.u32Limit; \
94	pMixedCtx->reg.u64Base = pVmcb->guest.REG.u64Base; \
95	pMixedCtx->reg.Attr.u = HMSVM_VMCB_2_CPU_SEG_ATTR(pVmcb->guest.REG.u16Attr); \
96	} while (0)
97	/** @} */
98
99	/** Macro for checking and returning from the using function for
100	* \#VMEXIT intercepts that maybe caused during delivering of another
101	* event in the guest. */
102	#define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
103	do \
104	{ \
105	int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
106	if (RT_UNLIKELY(rc == VINF_HM_DOUBLE_FAULT)) \
107	return VINF_SUCCESS; \
108	else if (RT_UNLIKELY(rc == VINF_EM_RESET)) \
109	return rc; \
110	} while (0)
111
112	/** Macro for upgrading a @a a_rc to VINF_EM_DBG_STEPPED after emulating an
113	* instruction that exited. */
114	#define HMSVM_CHECK_SINGLE_STEP(a_pVCpu, a_rc) \
115	do { \
116	if ((a_pVCpu)->hm.s.fSingleInstruction && (a_rc) == VINF_SUCCESS) \
117	(a_rc) = VINF_EM_DBG_STEPPED; \
118	} while (0)
119
120	/** Assert that preemption is disabled or covered by thread-context hooks. */
121	#define HMSVM_ASSERT_PREEMPT_SAFE() Assert( VMMR0ThreadCtxHooksAreRegistered(pVCpu) \
122	\|\| !RTThreadPreemptIsEnabled(NIL_RTTHREAD));
123
124	/** Assert that we haven't migrated CPUs when thread-context hooks are not
125	* used. */
126	#define HMSVM_ASSERT_CPU_SAFE() AssertMsg( VMMR0ThreadCtxHooksAreRegistered(pVCpu) \
127	\|\| pVCpu->hm.s.idEnteredCpu == RTMpCpuId(), \
128	("Illegal migration! Entered on CPU %u Current %u\n", \
129	pVCpu->hm.s.idEnteredCpu, RTMpCpuId()));
130
131	/** Exception bitmap mask for all contributory exceptions.
132	*
133	* Page fault is deliberately excluded here as it's conditional as to whether
134	* it's contributory or benign. Page faults are handled separately.
135	*/
136	#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) \
137	\| RT_BIT(X86_XCPT_DE))
138
139	/** @name VMCB Clean Bits.
140	*
141	* These flags are used for VMCB-state caching. A set VMCB Clean bit indicates
142	* AMD-V doesn't need to reload the corresponding value(s) from the VMCB in
143	* memory.
144	*
145	* @{ */
146	/** All intercepts vectors, TSC offset, PAUSE filter counter. */
147	#define HMSVM_VMCB_CLEAN_INTERCEPTS RT_BIT(0)
148	/** I/O permission bitmap, MSR permission bitmap. */
149	#define HMSVM_VMCB_CLEAN_IOPM_MSRPM RT_BIT(1)
150	/** ASID. */
151	#define HMSVM_VMCB_CLEAN_ASID RT_BIT(2)
152	/** TRP: V_TPR, V_IRQ, V_INTR_PRIO, V_IGN_TPR, V_INTR_MASKING,
153	V_INTR_VECTOR. */
154	#define HMSVM_VMCB_CLEAN_TPR RT_BIT(3)
155	/** Nested Paging: Nested CR3 (nCR3), PAT. */
156	#define HMSVM_VMCB_CLEAN_NP RT_BIT(4)
157	/** Control registers (CR0, CR3, CR4, EFER). */
158	#define HMSVM_VMCB_CLEAN_CRX_EFER RT_BIT(5)
159	/** Debug registers (DR6, DR7). */
160	#define HMSVM_VMCB_CLEAN_DRX RT_BIT(6)
161	/** GDT, IDT limit and base. */
162	#define HMSVM_VMCB_CLEAN_DT RT_BIT(7)
163	/** Segment register: CS, SS, DS, ES limit and base. */
164	#define HMSVM_VMCB_CLEAN_SEG RT_BIT(8)
165	/** CR2.*/
166	#define HMSVM_VMCB_CLEAN_CR2 RT_BIT(9)
167	/** Last-branch record (DbgCtlMsr, br_from, br_to, lastint_from, lastint_to) */
168	#define HMSVM_VMCB_CLEAN_LBR RT_BIT(10)
169	/** AVIC (AVIC APIC_BAR; AVIC APIC_BACKING_PAGE, AVIC
170	PHYSICAL_TABLE and AVIC LOGICAL_TABLE Pointers). */
171	#define HMSVM_VMCB_CLEAN_AVIC RT_BIT(11)
172	/** Mask of all valid VMCB Clean bits. */
173	#define HMSVM_VMCB_CLEAN_ALL ( HMSVM_VMCB_CLEAN_INTERCEPTS \
174	\| HMSVM_VMCB_CLEAN_IOPM_MSRPM \
175	\| HMSVM_VMCB_CLEAN_ASID \
176	\| HMSVM_VMCB_CLEAN_TPR \
177	\| HMSVM_VMCB_CLEAN_NP \
178	\| HMSVM_VMCB_CLEAN_CRX_EFER \
179	\| HMSVM_VMCB_CLEAN_DRX \
180	\| HMSVM_VMCB_CLEAN_DT \
181	\| HMSVM_VMCB_CLEAN_SEG \
182	\| HMSVM_VMCB_CLEAN_CR2 \
183	\| HMSVM_VMCB_CLEAN_LBR \
184	\| HMSVM_VMCB_CLEAN_AVIC)
185	/** @} */
186
187	/** @name SVM transient.
188	*
189	* A state structure for holding miscellaneous information across AMD-V
190	* VMRUN/#VMEXIT operation, restored after the transition.
191	*
192	* @{ */
193	typedef struct SVMTRANSIENT
194	{
195	/** The host's rflags/eflags. */
196	RTCCUINTREG uEflags;
197	#if HC_ARCH_BITS == 32
198	uint32_t u32Alignment0;
199	#endif
200
201	/** The #VMEXIT exit code (the EXITCODE field in the VMCB). */
202	uint64_t u64ExitCode;
203	/** The guest's TPR value used for TPR shadowing. */
204	uint8_t u8GuestTpr;
205	/** Alignment. */
206	uint8_t abAlignment0[7];
207
208	/** Whether the guest FPU state was active at the time of #VMEXIT. */
209	bool fWasGuestFPUStateActive;
210	/** Whether the guest debug state was active at the time of #VMEXIT. */
211	bool fWasGuestDebugStateActive;
212	/** Whether the hyper debug state was active at the time of #VMEXIT. */
213	bool fWasHyperDebugStateActive;
214	/** Whether the TSC offset mode needs to be updated. */
215	bool fUpdateTscOffsetting;
216	/** Whether the TSC_AUX MSR needs restoring on #VMEXIT. */
217	bool fRestoreTscAuxMsr;
218	/** Whether the #VMEXIT was caused by a page-fault during delivery of a
219	* contributary exception or a page-fault. */
220	bool fVectoringDoublePF;
221	/** Whether the #VMEXIT was caused by a page-fault during delivery of an
222	* external interrupt or NMI. */
223	bool fVectoringPF;
224	} SVMTRANSIENT, *PSVMTRANSIENT;
225	AssertCompileMemberAlignment(SVMTRANSIENT, u64ExitCode, sizeof(uint64_t));
226	AssertCompileMemberAlignment(SVMTRANSIENT, fWasGuestFPUStateActive, sizeof(uint64_t));
227	/** @} */
228
229	/**
230	* MSRPM (MSR permission bitmap) read permissions (for guest RDMSR).
231	*/
232	typedef enum SVMMSREXITREAD
233	{
234	/** Reading this MSR causes a #VMEXIT. */
235	SVMMSREXIT_INTERCEPT_READ = 0xb,
236	/** Reading this MSR does not cause a #VMEXIT. */
237	SVMMSREXIT_PASSTHRU_READ
238	} SVMMSREXITREAD;
239
240	/**
241	* MSRPM (MSR permission bitmap) write permissions (for guest WRMSR).
242	*/
243	typedef enum SVMMSREXITWRITE
244	{
245	/** Writing to this MSR causes a #VMEXIT. */
246	SVMMSREXIT_INTERCEPT_WRITE = 0xd,
247	/** Writing to this MSR does not cause a #VMEXIT. */
248	SVMMSREXIT_PASSTHRU_WRITE
249	} SVMMSREXITWRITE;
250
251	/**
252	* SVM #VMEXIT handler.
253	*
254	* @returns VBox status code.
255	* @param pVCpu Pointer to the VMCPU.
256	* @param pMixedCtx Pointer to the guest-CPU context.
257	* @param pSvmTransient Pointer to the SVM-transient structure.
258	*/
259	typedef int FNSVMEXITHANDLER(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
260
261	/*******************************************************************************
262	* Internal Functions *
263	*******************************************************************************/
264	static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, unsigned uMsr, SVMMSREXITREAD enmRead, SVMMSREXITWRITE enmWrite);
265	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu);
266	static void hmR0SvmLeave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
267
268	/** @name #VMEXIT handlers.
269	* @{
270	*/
271	static FNSVMEXITHANDLER hmR0SvmExitIntr;
272	static FNSVMEXITHANDLER hmR0SvmExitWbinvd;
273	static FNSVMEXITHANDLER hmR0SvmExitInvd;
274	static FNSVMEXITHANDLER hmR0SvmExitCpuid;
275	static FNSVMEXITHANDLER hmR0SvmExitRdtsc;
276	static FNSVMEXITHANDLER hmR0SvmExitRdtscp;
277	static FNSVMEXITHANDLER hmR0SvmExitRdpmc;
278	static FNSVMEXITHANDLER hmR0SvmExitInvlpg;
279	static FNSVMEXITHANDLER hmR0SvmExitHlt;
280	static FNSVMEXITHANDLER hmR0SvmExitMonitor;
281	static FNSVMEXITHANDLER hmR0SvmExitMwait;
282	static FNSVMEXITHANDLER hmR0SvmExitShutdown;
283	static FNSVMEXITHANDLER hmR0SvmExitReadCRx;
284	static FNSVMEXITHANDLER hmR0SvmExitWriteCRx;
285	static FNSVMEXITHANDLER hmR0SvmExitSetPendingXcptUD;
286	static FNSVMEXITHANDLER hmR0SvmExitMsr;
287	static FNSVMEXITHANDLER hmR0SvmExitReadDRx;
288	static FNSVMEXITHANDLER hmR0SvmExitWriteDRx;
289	static FNSVMEXITHANDLER hmR0SvmExitIOInstr;
290	static FNSVMEXITHANDLER hmR0SvmExitNestedPF;
291	static FNSVMEXITHANDLER hmR0SvmExitVIntr;
292	static FNSVMEXITHANDLER hmR0SvmExitTaskSwitch;
293	static FNSVMEXITHANDLER hmR0SvmExitVmmCall;
294	static FNSVMEXITHANDLER hmR0SvmExitIret;
295	static FNSVMEXITHANDLER hmR0SvmExitXcptPF;
296	static FNSVMEXITHANDLER hmR0SvmExitXcptNM;
297	static FNSVMEXITHANDLER hmR0SvmExitXcptMF;
298	static FNSVMEXITHANDLER hmR0SvmExitXcptDB;
299	/** @} */
300
301	DECLINLINE(int) hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient);
302
303	/*******************************************************************************
304	* Global Variables *
305	*******************************************************************************/
306	/** Ring-0 memory object for the IO bitmap. */
307	RTR0MEMOBJ g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
308	/** Physical address of the IO bitmap. */
309	RTHCPHYS g_HCPhysIOBitmap = 0;
310	/** Virtual address of the IO bitmap. */
311	R0PTRTYPE(void *) g_pvIOBitmap = NULL;
312
313
314	/**
315	* Sets up and activates AMD-V on the current CPU.
316	*
317	* @returns VBox status code.
318	* @param pCpu Pointer to the CPU info struct.
319	* @param pVM Pointer to the VM (can be NULL after a resume!).
320	* @param pvCpuPage Pointer to the global CPU page.
321	* @param HCPhysCpuPage Physical address of the global CPU page.
322	* @param fEnabledByHost Whether the host OS has already initialized AMD-V.
323	* @param pvArg Unused on AMD-V.
324	*/
325	VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBALCPUINFO pCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
326	void *pvArg)
327	{
328	Assert(!fEnabledByHost);
329	Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
330	Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
331	Assert(pvCpuPage);
332	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
333
334	NOREF(pvArg);
335	NOREF(fEnabledByHost);
336
337	/* Paranoid: Disable interrupt as, in theory, interrupt handlers might mess with EFER. */
338	RTCCUINTREG uEflags = ASMIntDisableFlags();
339
340	/*
341	* We must turn on AMD-V and setup the host state physical address, as those MSRs are per CPU.
342	*/
343	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
344	if (u64HostEfer & MSR_K6_EFER_SVME)
345	{
346	/* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE is active, then we blindly use AMD-V. */
347	if ( pVM
348	&& pVM->hm.s.svm.fIgnoreInUseError)
349	{
350	pCpu->fIgnoreAMDVInUseError = true;
351	}
352
353	if (!pCpu->fIgnoreAMDVInUseError)
354	{
355	ASMSetFlags(uEflags);
356	return VERR_SVM_IN_USE;
357	}
358	}
359
360	/* Turn on AMD-V in the EFER MSR. */
361	ASMWrMsr(MSR_K6_EFER, u64HostEfer \| MSR_K6_EFER_SVME);
362
363	/* Write the physical page address where the CPU will store the host state while executing the VM. */
364	ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
365
366	/* Restore interrupts. */
367	ASMSetFlags(uEflags);
368
369	/*
370	* Theoretically, other hypervisors may have used ASIDs, ideally we should flush all non-zero ASIDs
371	* when enabling SVM. AMD doesn't have an SVM instruction to flush all ASIDs (flushing is done
372	* upon VMRUN). Therefore, just set the fFlushAsidBeforeUse flag which instructs hmR0SvmSetupTLB()
373	* to flush the TLB with before using a new ASID.
374	*/
375	pCpu->fFlushAsidBeforeUse = true;
376
377	/*
378	* Ensure each VCPU scheduled on this CPU gets a new VPID on resume. See @bugref{6255}.
379	*/
380	++pCpu->cTlbFlushes;
381
382	return VINF_SUCCESS;
383	}
384
385
386	/**
387	* Deactivates AMD-V on the current CPU.
388	*
389	* @returns VBox status code.
390	* @param pCpu Pointer to the CPU info struct.
391	* @param pvCpuPage Pointer to the global CPU page.
392	* @param HCPhysCpuPage Physical address of the global CPU page.
393	*/
394	VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBALCPUINFO pCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
395	{
396	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
397	AssertReturn( HCPhysCpuPage
398	&& HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
399	AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
400	NOREF(pCpu);
401
402	/* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with EFER. */
403	RTCCUINTREG uEflags = ASMIntDisableFlags();
404
405	/* Turn off AMD-V in the EFER MSR. */
406	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
407	ASMWrMsr(MSR_K6_EFER, u64HostEfer & ~MSR_K6_EFER_SVME);
408
409	/* Invalidate host state physical address. */
410	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
411
412	/* Restore interrupts. */
413	ASMSetFlags(uEflags);
414
415	return VINF_SUCCESS;
416	}
417
418
419	/**
420	* Does global AMD-V initialization (called during module initialization).
421	*
422	* @returns VBox status code.
423	*/
424	VMMR0DECL(int) SVMR0GlobalInit(void)
425	{
426	/*
427	* Allocate 12 KB for the IO bitmap. Since this is non-optional and we always intercept all IO accesses, it's done
428	* once globally here instead of per-VM.
429	*/
430	Assert(g_hMemObjIOBitmap == NIL_RTR0MEMOBJ);
431	int rc = RTR0MemObjAllocCont(&g_hMemObjIOBitmap, 3 << PAGE_SHIFT, false /* fExecutable */);
432	if (RT_FAILURE(rc))
433	return rc;
434
435	g_pvIOBitmap = RTR0MemObjAddress(g_hMemObjIOBitmap);
436	g_HCPhysIOBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjIOBitmap, 0 /* iPage */);
437
438	/* Set all bits to intercept all IO accesses. */
439	ASMMemFill32(g_pvIOBitmap, 3 << PAGE_SHIFT, UINT32_C(0xffffffff));
440	return VINF_SUCCESS;
441	}
442
443
444	/**
445	* Does global AMD-V termination (called during module termination).
446	*/
447	VMMR0DECL(void) SVMR0GlobalTerm(void)
448	{
449	if (g_hMemObjIOBitmap != NIL_RTR0MEMOBJ)
450	{
451	RTR0MemObjFree(g_hMemObjIOBitmap, true /* fFreeMappings */);
452	g_pvIOBitmap = NULL;
453	g_HCPhysIOBitmap = 0;
454	g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
455	}
456	}
457
458
459	/**
460	* Frees any allocated per-VCPU structures for a VM.
461	*
462	* @param pVM Pointer to the VM.
463	*/
464	DECLINLINE(void) hmR0SvmFreeStructs(PVM pVM)
465	{
466	for (uint32_t i = 0; i < pVM->cCpus; i++)
467	{
468	PVMCPU pVCpu = &pVM->aCpus[i];
469	AssertPtr(pVCpu);
470
471	if (pVCpu->hm.s.svm.hMemObjVmcbHost != NIL_RTR0MEMOBJ)
472	{
473	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcbHost, false);
474	pVCpu->hm.s.svm.pvVmcbHost = 0;
475	pVCpu->hm.s.svm.HCPhysVmcbHost = 0;
476	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
477	}
478
479	if (pVCpu->hm.s.svm.hMemObjVmcb != NIL_RTR0MEMOBJ)
480	{
481	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcb, false);
482	pVCpu->hm.s.svm.pvVmcb = 0;
483	pVCpu->hm.s.svm.HCPhysVmcb = 0;
484	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
485	}
486
487	if (pVCpu->hm.s.svm.hMemObjMsrBitmap != NIL_RTR0MEMOBJ)
488	{
489	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjMsrBitmap, false);
490	pVCpu->hm.s.svm.pvMsrBitmap = 0;
491	pVCpu->hm.s.svm.HCPhysMsrBitmap = 0;
492	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
493	}
494	}
495	}
496
497
498	/**
499	* Does per-VM AMD-V initialization.
500	*
501	* @returns VBox status code.
502	* @param pVM Pointer to the VM.
503	*/
504	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
505	{
506	int rc = VERR_INTERNAL_ERROR_5;
507
508	/*
509	* Check for an AMD CPU erratum which requires us to flush the TLB before every world-switch.
510	*/
511	uint32_t u32Family;
512	uint32_t u32Model;
513	uint32_t u32Stepping;
514	if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping))
515	{
516	Log4(("SVMR0InitVM: AMD cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping));
517	pVM->hm.s.svm.fAlwaysFlushTLB = true;
518	}
519
520	/*
521	* Initialize the R0 memory objects up-front so we can properly cleanup on allocation failures.
522	*/
523	for (VMCPUID i = 0; i < pVM->cCpus; i++)
524	{
525	PVMCPU pVCpu = &pVM->aCpus[i];
526	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
527	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
528	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
529	}
530
531	for (VMCPUID i = 0; i < pVM->cCpus; i++)
532	{
533	PVMCPU pVCpu = &pVM->aCpus[i];
534
535	/*
536	* Allocate one page for the host-context VM control block (VMCB). This is used for additional host-state (such as
537	* FS, GS, Kernel GS Base, etc.) apart from the host-state save area specified in MSR_K8_VM_HSAVE_PA.
538	*/
539	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcbHost, 1 << PAGE_SHIFT, false /* fExecutable */);
540	if (RT_FAILURE(rc))
541	goto failure_cleanup;
542
543	pVCpu->hm.s.svm.pvVmcbHost = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcbHost);
544	pVCpu->hm.s.svm.HCPhysVmcbHost = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcbHost, 0 /* iPage */);
545	Assert(pVCpu->hm.s.svm.HCPhysVmcbHost < _4G);
546	ASMMemZeroPage(pVCpu->hm.s.svm.pvVmcbHost);
547
548	/*
549	* Allocate one page for the guest-state VMCB.
550	*/
551	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcb, 1 << PAGE_SHIFT, false /* fExecutable */);
552	if (RT_FAILURE(rc))
553	goto failure_cleanup;
554
555	pVCpu->hm.s.svm.pvVmcb = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcb);
556	pVCpu->hm.s.svm.HCPhysVmcb = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcb, 0 /* iPage */);
557	Assert(pVCpu->hm.s.svm.HCPhysVmcb < _4G);
558	ASMMemZeroPage(pVCpu->hm.s.svm.pvVmcb);
559
560	/*
561	* Allocate two pages (8 KB) for the MSR permission bitmap. There doesn't seem to be a way to convince
562	* SVM to not require one.
563	*/
564	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjMsrBitmap, 2 << PAGE_SHIFT, false /* fExecutable */);
565	if (RT_FAILURE(rc))
566	goto failure_cleanup;
567
568	pVCpu->hm.s.svm.pvMsrBitmap = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjMsrBitmap);
569	pVCpu->hm.s.svm.HCPhysMsrBitmap = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjMsrBitmap, 0 /* iPage */);
570	/* Set all bits to intercept all MSR accesses (changed later on). */
571	ASMMemFill32(pVCpu->hm.s.svm.pvMsrBitmap, 2 << PAGE_SHIFT, UINT32_C(0xffffffff));
572	}
573
574	return VINF_SUCCESS;
575
576	failure_cleanup:
577	hmR0SvmFreeStructs(pVM);
578	return rc;
579	}
580
581
582	/**
583	* Does per-VM AMD-V termination.
584	*
585	* @returns VBox status code.
586	* @param pVM Pointer to the VM.
587	*/
588	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
589	{
590	hmR0SvmFreeStructs(pVM);
591	return VINF_SUCCESS;
592	}
593
594
595	/**
596	* Sets the permission bits for the specified MSR in the MSRPM.
597	*
598	* @param pVCpu Pointer to the VMCPU.
599	* @param uMsr The MSR for which the access permissions are being set.
600	* @param enmRead MSR read permissions.
601	* @param enmWrite MSR write permissions.
602	*/
603	static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, unsigned uMsr, SVMMSREXITREAD enmRead, SVMMSREXITWRITE enmWrite)
604	{
605	unsigned ulBit;
606	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
607
608	/*
609	* Layout:
610	* Byte offset MSR range
611	* 0x000 - 0x7ff 0x00000000 - 0x00001fff
612	* 0x800 - 0xfff 0xc0000000 - 0xc0001fff
613	* 0x1000 - 0x17ff 0xc0010000 - 0xc0011fff
614	* 0x1800 - 0x1fff Reserved
615	*/
616	if (uMsr <= 0x00001FFF)
617	{
618	/* Pentium-compatible MSRs. */
619	ulBit = uMsr * 2;
620	}
621	else if ( uMsr >= 0xC0000000
622	&& uMsr <= 0xC0001FFF)
623	{
624	/* AMD Sixth Generation x86 Processor MSRs. */
625	ulBit = (uMsr - 0xC0000000) * 2;
626	pbMsrBitmap += 0x800;
627	}
628	else if ( uMsr >= 0xC0010000
629	&& uMsr <= 0xC0011FFF)
630	{
631	/* AMD Seventh and Eighth Generation Processor MSRs. */
632	ulBit = (uMsr - 0xC0001000) * 2;
633	pbMsrBitmap += 0x1000;
634	}
635	else
636	{
637	AssertFailed();
638	return;
639	}
640
641	Assert(ulBit < 0x3fff /* 16 * 1024 - 1 */);
642	if (enmRead == SVMMSREXIT_INTERCEPT_READ)
643	ASMBitSet(pbMsrBitmap, ulBit);
644	else
645	ASMBitClear(pbMsrBitmap, ulBit);
646
647	if (enmWrite == SVMMSREXIT_INTERCEPT_WRITE)
648	ASMBitSet(pbMsrBitmap, ulBit + 1);
649	else
650	ASMBitClear(pbMsrBitmap, ulBit + 1);
651
652	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
653	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
654	}
655
656
657	/**
658	* Sets up AMD-V for the specified VM.
659	* This function is only called once per-VM during initalization.
660	*
661	* @returns VBox status code.
662	* @param pVM Pointer to the VM.
663	*/
664	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
665	{
666	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
667	AssertReturn(pVM, VERR_INVALID_PARAMETER);
668	Assert(pVM->hm.s.svm.fSupported);
669
670	for (VMCPUID i = 0; i < pVM->cCpus; i++)
671	{
672	PVMCPU pVCpu = &pVM->aCpus[i];
673	PSVMVMCB pVmcb = (PSVMVMCB)pVM->aCpus[i].hm.s.svm.pvVmcb;
674
675	AssertMsgReturn(pVmcb, ("Invalid pVmcb for vcpu[%u]\n", i), VERR_SVM_INVALID_PVMCB);
676
677	/* Initialize the #VMEXIT history array with end-of-array markers (UINT16_MAX). */
678	Assert(!pVCpu->hm.s.idxExitHistoryFree);
679	HMCPU_EXIT_HISTORY_RESET(pVCpu);
680
681	/* Trap exceptions unconditionally (debug purposes). */
682	#ifdef HMSVM_ALWAYS_TRAP_PF
683	pVmcb->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_PF);
684	#endif
685	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
686	/* If you add any exceptions here, make sure to update hmR0SvmHandleExit(). */
687	pVmcb->ctrl.u32InterceptException \|= 0
688	\| RT_BIT(X86_XCPT_BP)
689	\| RT_BIT(X86_XCPT_DB)
690	\| RT_BIT(X86_XCPT_DE)
691	\| RT_BIT(X86_XCPT_NM)
692	\| RT_BIT(X86_XCPT_UD)
693	\| RT_BIT(X86_XCPT_NP)
694	\| RT_BIT(X86_XCPT_SS)
695	\| RT_BIT(X86_XCPT_GP)
696	\| RT_BIT(X86_XCPT_PF)
697	\| RT_BIT(X86_XCPT_MF)
698	;
699	#endif
700
701	/* Set up unconditional intercepts and conditions. */
702	pVmcb->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR /* External interrupt causes a #VMEXIT. */
703	\| SVM_CTRL1_INTERCEPT_NMI /* Non-maskable interrupts causes a #VMEXIT. */
704	\| SVM_CTRL1_INTERCEPT_INIT /* INIT signal causes a #VMEXIT. */
705	\| SVM_CTRL1_INTERCEPT_RDPMC /* RDPMC causes a #VMEXIT. */
706	\| SVM_CTRL1_INTERCEPT_CPUID /* CPUID causes a #VMEXIT. */
707	\| SVM_CTRL1_INTERCEPT_RSM /* RSM causes a #VMEXIT. */
708	\| SVM_CTRL1_INTERCEPT_HLT /* HLT causes a #VMEXIT. */
709	\| SVM_CTRL1_INTERCEPT_INOUT_BITMAP /* Use the IOPM to cause IOIO #VMEXITs. */
710	\| SVM_CTRL1_INTERCEPT_MSR_SHADOW /* MSR access not covered by MSRPM causes a #VMEXIT.*/
711	\| SVM_CTRL1_INTERCEPT_INVLPGA /* INVLPGA causes a #VMEXIT. */
712	\| SVM_CTRL1_INTERCEPT_SHUTDOWN /* Shutdown events causes a #VMEXIT. */
713	\| SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Intercept "freezing" during legacy FPU handling. */
714
715	pVmcb->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* VMRUN causes a #VMEXIT. */
716	\| SVM_CTRL2_INTERCEPT_VMMCALL /* VMMCALL causes a #VMEXIT. */
717	\| SVM_CTRL2_INTERCEPT_VMLOAD /* VMLOAD causes a #VMEXIT. */
718	\| SVM_CTRL2_INTERCEPT_VMSAVE /* VMSAVE causes a #VMEXIT. */
719	\| SVM_CTRL2_INTERCEPT_STGI /* STGI causes a #VMEXIT. */
720	\| SVM_CTRL2_INTERCEPT_CLGI /* CLGI causes a #VMEXIT. */
721	\| SVM_CTRL2_INTERCEPT_SKINIT /* SKINIT causes a #VMEXIT. */
722	\| SVM_CTRL2_INTERCEPT_WBINVD /* WBINVD causes a #VMEXIT. */
723	\| SVM_CTRL2_INTERCEPT_MONITOR /* MONITOR causes a #VMEXIT. */
724	\| SVM_CTRL2_INTERCEPT_MWAIT; /* MWAIT causes a #VMEXIT. */
725
726	/* CR0, CR4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
727	pVmcb->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(4);
728
729	/* CR0, CR4 writes must be intercepted for the same reasons as above. */
730	pVmcb->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(4);
731
732	/* Intercept all DRx reads and writes by default. Changed later on. */
733	pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
734	pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
735
736	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
737	pVmcb->ctrl.IntCtrl.n.u1VIrqMasking = 1;
738
739	/* Ignore the priority in the TPR. This is necessary for delivering PIC style (ExtInt) interrupts and we currently
740	deliver both PIC and APIC interrupts alike. See hmR0SvmInjectPendingEvent() */
741	pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
742
743	/* Set IO and MSR bitmap permission bitmap physical addresses. */
744	pVmcb->ctrl.u64IOPMPhysAddr = g_HCPhysIOBitmap;
745	pVmcb->ctrl.u64MSRPMPhysAddr = pVCpu->hm.s.svm.HCPhysMsrBitmap;
746
747	/* No LBR virtualization. */
748	pVmcb->ctrl.u64LBRVirt = 0;
749
750	/* Initially set all VMCB clean bits to 0 indicating that everything should be loaded from the VMCB in memory. */
751	pVmcb->ctrl.u64VmcbCleanBits = 0;
752
753	/* The host ASID MBZ, for the guest start with 1. */
754	pVmcb->ctrl.TLBCtrl.n.u32ASID = 1;
755
756	/*
757	* Setup the PAT MSR (applicable for Nested Paging only).
758	* The default value should be 0x0007040600070406ULL, but we want to treat all guest memory as WB,
759	* so choose type 6 for all PAT slots.
760	*/
761	pVmcb->guest.u64GPAT = UINT64_C(0x0006060606060606);
762
763	/* Setup Nested Paging. This doesn't change throughout the execution time of the VM. */
764	pVmcb->ctrl.NestedPaging.n.u1NestedPaging = pVM->hm.s.fNestedPaging;
765
766	/* Without Nested Paging, we need additionally intercepts. */
767	if (!pVM->hm.s.fNestedPaging)
768	{
769	/* CR3 reads/writes must be intercepted; our shadow values differ from the guest values. */
770	pVmcb->ctrl.u16InterceptRdCRx \|= RT_BIT(3);
771	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(3);
772
773	/* Intercept INVLPG and task switches (may change CR3, EFLAGS, LDT). */
774	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_INVLPG
775	\| SVM_CTRL1_INTERCEPT_TASK_SWITCH;
776
777	/* Page faults must be intercepted to implement shadow paging. */
778	pVmcb->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_PF);
779	}
780
781	#ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
782	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_TASK_SWITCH;
783	#endif
784
785	/*
786	* The following MSRs are saved/restored automatically during the world-switch.
787	* Don't intercept guest read/write accesses to these MSRs.
788	*/
789	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
790	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_CSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
791	hmR0SvmSetMsrPermission(pVCpu, MSR_K6_STAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
792	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_SF_MASK, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
793	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_FS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
794	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
795	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_KERNEL_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
796	hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_CS, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
797	hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_ESP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
798	hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_EIP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
799	}
800
801	return VINF_SUCCESS;
802	}
803
804
805	/**
806	* Invalidates a guest page by guest virtual address.
807	*
808	* @returns VBox status code.
809	* @param pVM Pointer to the VM.
810	* @param pVCpu Pointer to the VMCPU.
811	* @param GCVirt Guest virtual address of the page to invalidate.
812	*/
813	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
814	{
815	AssertReturn(pVM, VERR_INVALID_PARAMETER);
816	Assert(pVM->hm.s.svm.fSupported);
817
818	bool fFlushPending = pVM->hm.s.svm.fAlwaysFlushTLB \|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_FLUSH);
819
820	/* Skip it if a TLB flush is already pending. */
821	if (!fFlushPending)
822	{
823	Log4(("SVMR0InvalidatePage %RGv\n", GCVirt));
824
825	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
826	AssertMsgReturn(pVmcb, ("Invalid pVmcb!\n"), VERR_SVM_INVALID_PVMCB);
827
828	#if HC_ARCH_BITS == 32
829	/* If we get a flush in 64-bit guest mode, then force a full TLB flush. INVLPGA takes only 32-bit addresses. */
830	if (CPUMIsGuestInLongMode(pVCpu))
831	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
832	else
833	#endif
834	{
835	SVMR0InvlpgA(GCVirt, pVmcb->ctrl.TLBCtrl.n.u32ASID);
836	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
837	}
838	}
839	return VINF_SUCCESS;
840	}
841
842
843	/**
844	* Flushes the appropriate tagged-TLB entries.
845	*
846	* @param pVM Pointer to the VM.
847	* @param pVCpu Pointer to the VMCPU.
848	*/
849	static void hmR0SvmFlushTaggedTlb(PVMCPU pVCpu)
850	{
851	PVM pVM = pVCpu->CTX_SUFF(pVM);
852	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
853	PHMGLOBALCPUINFO pCpu = HMR0GetCurrentCpu();
854
855	/*
856	* Force a TLB flush for the first world switch if the current CPU differs from the one we ran on last.
857	* This can happen both for start & resume due to long jumps back to ring-3.
858	* If the TLB flush count changed, another VM (VCPU rather) has hit the ASID limit while flushing the TLB,
859	* so we cannot reuse the ASIDs without flushing.
860	*/
861	bool fNewAsid = false;
862	Assert(pCpu->idCpu != NIL_RTCPUID);
863	if ( pVCpu->hm.s.idLastCpu != pCpu->idCpu
864	\|\| pVCpu->hm.s.cTlbFlushes != pCpu->cTlbFlushes)
865	{
866	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
867	pVCpu->hm.s.fForceTLBFlush = true;
868	fNewAsid = true;
869	}
870
871	/* Set TLB flush state as checked until we return from the world switch. */
872	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true);
873
874	/* Check for explicit TLB shootdowns. */
875	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
876	{
877	pVCpu->hm.s.fForceTLBFlush = true;
878	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
879	}
880
881	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_NOTHING;
882
883	if (pVM->hm.s.svm.fAlwaysFlushTLB)
884	{
885	/*
886	* This is the AMD erratum 170. We need to flush the entire TLB for each world switch. Sad.
887	*/
888	pCpu->uCurrentAsid = 1;
889	pVCpu->hm.s.uCurrentAsid = 1;
890	pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
891	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
892
893	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
894	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
895	}
896	else if (pVCpu->hm.s.fForceTLBFlush)
897	{
898	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
899	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
900
901	if (fNewAsid)
902	{
903	++pCpu->uCurrentAsid;
904	bool fHitASIDLimit = false;
905	if (pCpu->uCurrentAsid >= pVM->hm.s.uMaxAsid)
906	{
907	pCpu->uCurrentAsid = 1; /* Wraparound at 1; host uses 0 */
908	pCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new VPID. */
909	fHitASIDLimit = true;
910
911	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
912	{
913	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
914	pCpu->fFlushAsidBeforeUse = true;
915	}
916	else
917	{
918	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
919	pCpu->fFlushAsidBeforeUse = false;
920	}
921	}
922
923	if ( !fHitASIDLimit
924	&& pCpu->fFlushAsidBeforeUse)
925	{
926	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
927	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
928	else
929	{
930	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
931	pCpu->fFlushAsidBeforeUse = false;
932	}
933	}
934
935	pVCpu->hm.s.uCurrentAsid = pCpu->uCurrentAsid;
936	pVCpu->hm.s.idLastCpu = pCpu->idCpu;
937	pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
938	}
939	else
940	{
941	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
942	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
943	else
944	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
945	}
946
947	pVCpu->hm.s.fForceTLBFlush = false;
948	}
949	/** @todo We never set VMCPU_FF_TLB_SHOOTDOWN anywhere so this path should
950	* not be executed. See hmQueueInvlPage() where it is commented
951	* out. Support individual entry flushing someday. */
952	#if 0
953	else
954	{
955	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_SHOOTDOWN))
956	{
957	/* Deal with pending TLB shootdown actions which were queued when we were not executing code. */
958	STAM_COUNTER_INC(&pVCpu->hm.s.StatTlbShootdown);
959	for (uint32_t i = 0; i < pVCpu->hm.s.TlbShootdown.cPages; i++)
960	SVMR0InvlpgA(pVCpu->hm.s.TlbShootdown.aPages[i], pVmcb->ctrl.TLBCtrl.n.u32ASID);
961
962	pVCpu->hm.s.TlbShootdown.cPages = 0;
963	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TLB_SHOOTDOWN);
964	}
965	}
966	#endif
967
968
969	/* Update VMCB with the ASID. */
970	if (pVmcb->ctrl.TLBCtrl.n.u32ASID != pVCpu->hm.s.uCurrentAsid)
971	{
972	pVmcb->ctrl.TLBCtrl.n.u32ASID = pVCpu->hm.s.uCurrentAsid;
973	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_ASID;
974	}
975
976	AssertMsg(pVCpu->hm.s.idLastCpu == pCpu->idCpu,
977	("vcpu idLastCpu=%x pcpu idCpu=%x\n", pVCpu->hm.s.idLastCpu, pCpu->idCpu));
978	AssertMsg(pVCpu->hm.s.cTlbFlushes == pCpu->cTlbFlushes,
979	("Flush count mismatch for cpu %d (%x vs %x)\n", pCpu->idCpu, pVCpu->hm.s.cTlbFlushes, pCpu->cTlbFlushes));
980	AssertMsg(pCpu->uCurrentAsid >= 1 && pCpu->uCurrentAsid < pVM->hm.s.uMaxAsid,
981	("cpu%d uCurrentAsid = %x\n", pCpu->idCpu, pCpu->uCurrentAsid));
982	AssertMsg(pVCpu->hm.s.uCurrentAsid >= 1 && pVCpu->hm.s.uCurrentAsid < pVM->hm.s.uMaxAsid,
983	("cpu%d VM uCurrentAsid = %x\n", pCpu->idCpu, pVCpu->hm.s.uCurrentAsid));
984
985	#ifdef VBOX_WITH_STATISTICS
986	if (pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_NOTHING)
987	STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch);
988	else if ( pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT
989	\|\| pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT_RETAIN_GLOBALS)
990	{
991	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
992	}
993	else
994	{
995	Assert(pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_ENTIRE);
996	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushEntire);
997	}
998	#endif
999	}
1000
1001
1002	/** @name 64-bit guest on 32-bit host OS helper functions.
1003	*
1004	* The host CPU is still 64-bit capable but the host OS is running in 32-bit
1005	* mode (code segment, paging). These wrappers/helpers perform the necessary
1006	* bits for the 32->64 switcher.
1007	*
1008	* @{ */
1009	#if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1010	/**
1011	* Prepares for and executes VMRUN (64-bit guests on a 32-bit host).
1012	*
1013	* @returns VBox status code.
1014	* @param HCPhysVmcbHost Physical address of host VMCB.
1015	* @param HCPhysVmcb Physical address of the VMCB.
1016	* @param pCtx Pointer to the guest-CPU context.
1017	* @param pVM Pointer to the VM.
1018	* @param pVCpu Pointer to the VMCPU.
1019	*/
1020	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS HCPhysVmcbHost, RTHCPHYS HCPhysVmcb, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
1021	{
1022	uint32_t aParam[4];
1023	aParam[0] = (uint32_t)(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Lo. */
1024	aParam[1] = (uint32_t)(HCPhysVmcbHost >> 32); /* Param 1: HCPhysVmcbHost - Hi. */
1025	aParam[2] = (uint32_t)(HCPhysVmcb); /* Param 2: HCPhysVmcb - Lo. */
1026	aParam[3] = (uint32_t)(HCPhysVmcb >> 32); /* Param 2: HCPhysVmcb - Hi. */
1027
1028	return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, HM64ON32OP_SVMRCVMRun64, 4, &aParam[0]);
1029	}
1030
1031
1032	/**
1033	* Executes the specified VMRUN handler in 64-bit mode.
1034	*
1035	* @returns VBox status code.
1036	* @param pVM Pointer to the VM.
1037	* @param pVCpu Pointer to the VMCPU.
1038	* @param pCtx Pointer to the guest-CPU context.
1039	* @param enmOp The operation to perform.
1040	* @param cbParam Number of parameters.
1041	* @param paParam Array of 32-bit parameters.
1042	*/
1043	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, HM64ON32OP enmOp, uint32_t cbParam,
1044	uint32_t *paParam)
1045	{
1046	AssertReturn(pVM->hm.s.pfnHost32ToGuest64R0, VERR_HM_NO_32_TO_64_SWITCHER);
1047	Assert(enmOp > HM64ON32OP_INVALID && enmOp < HM64ON32OP_END);
1048
1049	/* Disable interrupts. */
1050	RTHCUINTREG uOldEFlags = ASMIntDisableFlags();
1051
1052	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1053	RTCPUID idHostCpu = RTMpCpuId();
1054	CPUMR0SetLApic(pVCpu, idHostCpu);
1055	#endif
1056
1057	CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
1058	CPUMSetHyperEIP(pVCpu, enmOp);
1059	for (int i = (int)cbParam - 1; i >= 0; i--)
1060	CPUMPushHyper(pVCpu, paParam[i]);
1061
1062	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatWorldSwitch3264, z);
1063	/* Call the switcher. */
1064	int rc = pVM->hm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
1065	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatWorldSwitch3264, z);
1066
1067	/* Restore interrupts. */
1068	ASMSetFlags(uOldEFlags);
1069	return rc;
1070	}
1071
1072	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */
1073	/** @} */
1074
1075
1076	/**
1077	* Adds an exception to the intercept exception bitmap in the VMCB and updates
1078	* the corresponding VMCB Clean bit.
1079	*
1080	* @param pVmcb Pointer to the VM control block.
1081	* @param u32Xcpt The value of the exception (X86_XCPT_*).
1082	*/
1083	DECLINLINE(void) hmR0SvmAddXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
1084	{
1085	if (!(pVmcb->ctrl.u32InterceptException & RT_BIT(u32Xcpt)))
1086	{
1087	pVmcb->ctrl.u32InterceptException \|= RT_BIT(u32Xcpt);
1088	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1089	}
1090	}
1091
1092
1093	/**
1094	* Removes an exception from the intercept-exception bitmap in the VMCB and
1095	* updates the corresponding VMCB Clean bit.
1096	*
1097	* @param pVmcb Pointer to the VM control block.
1098	* @param u32Xcpt The value of the exception (X86_XCPT_*).
1099	*/
1100	DECLINLINE(void) hmR0SvmRemoveXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
1101	{
1102	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
1103	if (pVmcb->ctrl.u32InterceptException & RT_BIT(u32Xcpt))
1104	{
1105	pVmcb->ctrl.u32InterceptException &= ~RT_BIT(u32Xcpt);
1106	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1107	}
1108	#endif
1109	}
1110
1111
1112	/**
1113	* Loads the guest CR0 control register into the guest-state area in the VMCB.
1114	* Although the guest CR0 is a separate field in the VMCB we have to consider
1115	* the FPU state itself which is shared between the host and the guest.
1116	*
1117	* @returns VBox status code.
1118	* @param pVM Pointer to the VMCPU.
1119	* @param pVmcb Pointer to the VM control block.
1120	* @param pCtx Pointer to the guest-CPU context.
1121	*
1122	* @remarks No-long-jump zone!!!
1123	*/
1124	static void hmR0SvmLoadSharedCR0(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1125	{
1126	/*
1127	* Guest CR0.
1128	*/
1129	PVM pVM = pVCpu->CTX_SUFF(pVM);
1130	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
1131	{
1132	uint64_t u64GuestCR0 = pCtx->cr0;
1133
1134	/* Always enable caching. */
1135	u64GuestCR0 &= ~(X86_CR0_CD \| X86_CR0_NW);
1136
1137	/*
1138	* When Nested Paging is not available use shadow page tables and intercept #PFs (the latter done in SVMR0SetupVM()).
1139	*/
1140	if (!pVM->hm.s.fNestedPaging)
1141	{
1142	u64GuestCR0 \|= X86_CR0_PG; /* When Nested Paging is not available, use shadow page tables. */
1143	u64GuestCR0 \|= X86_CR0_WP; /* Guest CPL 0 writes to its read-only pages should cause a #PF #VMEXIT. */
1144	}
1145
1146	/*
1147	* Guest FPU bits.
1148	*/
1149	bool fInterceptNM = false;
1150	bool fInterceptMF = false;
1151	u64GuestCR0 \|= X86_CR0_NE; /* Use internal x87 FPU exceptions handling rather than external interrupts. */
1152	if (CPUMIsGuestFPUStateActive(pVCpu))
1153	{
1154	/* Catch floating point exceptions if we need to report them to the guest in a different way. */
1155	if (!(u64GuestCR0 & X86_CR0_NE))
1156	{
1157	Log4(("hmR0SvmLoadGuestControlRegs: Intercepting Guest CR0.MP Old-style FPU handling!!!\n"));
1158	fInterceptMF = true;
1159	}
1160	}
1161	else
1162	{
1163	fInterceptNM = true; /* Guest FPU inactive, #VMEXIT on #NM for lazy FPU loading. */
1164	u64GuestCR0 \|= X86_CR0_TS /* Guest can task switch quickly and do lazy FPU syncing. */
1165	\| X86_CR0_MP; /* FWAIT/WAIT should not ignore CR0.TS and should generate #NM. */
1166	}
1167
1168	/*
1169	* Update the exception intercept bitmap.
1170	*/
1171	if (fInterceptNM)
1172	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_NM);
1173	else
1174	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_NM);
1175
1176	if (fInterceptMF)
1177	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_MF);
1178	else
1179	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_MF);
1180
1181	pVmcb->guest.u64CR0 = u64GuestCR0;
1182	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1183	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR0);
1184	}
1185	}
1186
1187
1188	/**
1189	* Loads the guest control registers (CR2, CR3, CR4) into the VMCB.
1190	*
1191	* @returns VBox status code.
1192	* @param pVCpu Pointer to the VMCPU.
1193	* @param pVmcb Pointer to the VM control block.
1194	* @param pCtx Pointer to the guest-CPU context.
1195	*
1196	* @remarks No-long-jump zone!!!
1197	*/
1198	static int hmR0SvmLoadGuestControlRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1199	{
1200	PVM pVM = pVCpu->CTX_SUFF(pVM);
1201
1202	/*
1203	* Guest CR2.
1204	*/
1205	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR2))
1206	{
1207	pVmcb->guest.u64CR2 = pCtx->cr2;
1208	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CR2;
1209	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR2);
1210	}
1211
1212	/*
1213	* Guest CR3.
1214	*/
1215	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR3))
1216	{
1217	if (pVM->hm.s.fNestedPaging)
1218	{
1219	PGMMODE enmShwPagingMode;
1220	#if HC_ARCH_BITS == 32
1221	if (CPUMIsGuestInLongModeEx(pCtx))
1222	enmShwPagingMode = PGMMODE_AMD64_NX;
1223	else
1224	#endif
1225	enmShwPagingMode = PGMGetHostMode(pVM);
1226
1227	pVmcb->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
1228	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1229	Assert(pVmcb->ctrl.u64NestedPagingCR3);
1230	pVmcb->guest.u64CR3 = pCtx->cr3;
1231	}
1232	else
1233	pVmcb->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
1234
1235	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1236	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR3);
1237	}
1238
1239	/*
1240	* Guest CR4.
1241	*/
1242	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR4))
1243	{
1244	uint64_t u64GuestCR4 = pCtx->cr4;
1245	if (!pVM->hm.s.fNestedPaging)
1246	{
1247	switch (pVCpu->hm.s.enmShadowMode)
1248	{
1249	case PGMMODE_REAL:
1250	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
1251	AssertFailed();
1252	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1253
1254	case PGMMODE_32_BIT: /* 32-bit paging. */
1255	u64GuestCR4 &= ~X86_CR4_PAE;
1256	break;
1257
1258	case PGMMODE_PAE: /* PAE paging. */
1259	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
1260	/** Must use PAE paging as we could use physical memory > 4 GB */
1261	u64GuestCR4 \|= X86_CR4_PAE;
1262	break;
1263
1264	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
1265	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
1266	#ifdef VBOX_ENABLE_64_BITS_GUESTS
1267	break;
1268	#else
1269	AssertFailed();
1270	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1271	#endif
1272
1273	default: /* shut up gcc */
1274	AssertFailed();
1275	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1276	}
1277	}
1278
1279	pVmcb->guest.u64CR4 = u64GuestCR4;
1280	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1281	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR4);
1282	}
1283
1284	return VINF_SUCCESS;
1285	}
1286
1287
1288	/**
1289	* Loads the guest segment registers into the VMCB.
1290	*
1291	* @returns VBox status code.
1292	* @param pVCpu Pointer to the VMCPU.
1293	* @param pVmcb Pointer to the VM control block.
1294	* @param pCtx Pointer to the guest-CPU context.
1295	*
1296	* @remarks No-long-jump zone!!!
1297	*/
1298	static void hmR0SvmLoadGuestSegmentRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1299	{
1300	/* Guest Segment registers: CS, SS, DS, ES, FS, GS. */
1301	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS))
1302	{
1303	HMSVM_LOAD_SEG_REG(CS, cs);
1304	HMSVM_LOAD_SEG_REG(SS, ss);
1305	HMSVM_LOAD_SEG_REG(DS, ds);
1306	HMSVM_LOAD_SEG_REG(ES, es);
1307	HMSVM_LOAD_SEG_REG(FS, fs);
1308	HMSVM_LOAD_SEG_REG(GS, gs);
1309
1310	pVmcb->guest.u8CPL = pCtx->ss.Attr.n.u2Dpl;
1311	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
1312	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS);
1313	}
1314
1315	/* Guest TR. */
1316	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_TR))
1317	{
1318	HMSVM_LOAD_SEG_REG(TR, tr);
1319	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_TR);
1320	}
1321
1322	/* Guest LDTR. */
1323	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_LDTR))
1324	{
1325	HMSVM_LOAD_SEG_REG(LDTR, ldtr);
1326	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LDTR);
1327	}
1328
1329	/* Guest GDTR. */
1330	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_GDTR))
1331	{
1332	pVmcb->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
1333	pVmcb->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
1334	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1335	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_GDTR);
1336	}
1337
1338	/* Guest IDTR. */
1339	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_IDTR))
1340	{
1341	pVmcb->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
1342	pVmcb->guest.IDTR.u64Base = pCtx->idtr.pIdt;
1343	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1344	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_IDTR);
1345	}
1346	}
1347
1348
1349	/**
1350	* Loads the guest MSRs into the VMCB.
1351	*
1352	* @param pVCpu Pointer to the VMCPU.
1353	* @param pVmcb Pointer to the VM control block.
1354	* @param pCtx Pointer to the guest-CPU context.
1355	*
1356	* @remarks No-long-jump zone!!!
1357	*/
1358	static void hmR0SvmLoadGuestMsrs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1359	{
1360	/* Guest Sysenter MSRs. */
1361	pVmcb->guest.u64SysEnterCS = pCtx->SysEnter.cs;
1362	pVmcb->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
1363	pVmcb->guest.u64SysEnterESP = pCtx->SysEnter.esp;
1364
1365	/*
1366	* Guest EFER MSR.
1367	* AMD-V requires guest EFER.SVME to be set. Weird.
1368	* See AMD spec. 15.5.1 "Basic Operation" \| "Canonicalization and Consistency Checks".
1369	*/
1370	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_EFER_MSR))
1371	{
1372	pVmcb->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
1373	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1374	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
1375	}
1376
1377	/* 64-bit MSRs. */
1378	if (CPUMIsGuestInLongModeEx(pCtx))
1379	{
1380	pVmcb->guest.FS.u64Base = pCtx->fs.u64Base;
1381	pVmcb->guest.GS.u64Base = pCtx->gs.u64Base;
1382	}
1383	else
1384	{
1385	/* If the guest isn't in 64-bit mode, clear MSR_K6_LME bit from guest EFER otherwise AMD-V expects amd64 shadow paging. */
1386	if (pCtx->msrEFER & MSR_K6_EFER_LME)
1387	{
1388	pVmcb->guest.u64EFER &= ~MSR_K6_EFER_LME;
1389	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1390	}
1391	}
1392
1393
1394	/** @todo The following are used in 64-bit only (SYSCALL/SYSRET) but they might
1395	* be writable in 32-bit mode. Clarify with AMD spec. */
1396	pVmcb->guest.u64STAR = pCtx->msrSTAR;
1397	pVmcb->guest.u64LSTAR = pCtx->msrLSTAR;
1398	pVmcb->guest.u64CSTAR = pCtx->msrCSTAR;
1399	pVmcb->guest.u64SFMASK = pCtx->msrSFMASK;
1400	pVmcb->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE;
1401	}
1402
1403
1404	/**
1405	* Loads the guest state into the VMCB and programs the necessary intercepts
1406	* accordingly.
1407	*
1408	* @param pVCpu Pointer to the VMCPU.
1409	* @param pVmcb Pointer to the VM control block.
1410	* @param pCtx Pointer to the guest-CPU context.
1411	*
1412	* @remarks No-long-jump zone!!!
1413	* @remarks Requires EFLAGS to be up-to-date in the VMCB!
1414	*/
1415	static void hmR0SvmLoadSharedDebugState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1416	{
1417	if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
1418	return;
1419	Assert((pCtx->dr[6] & X86_DR6_RA1_MASK) == X86_DR6_RA1_MASK); Assert((pCtx->dr[6] & X86_DR6_RAZ_MASK) == 0);
1420	Assert((pCtx->dr[7] & X86_DR7_RA1_MASK) == X86_DR7_RA1_MASK); Assert((pCtx->dr[7] & X86_DR7_RAZ_MASK) == 0);
1421
1422	bool fInterceptDB = false;
1423	bool fInterceptMovDRx = false;
1424
1425	/*
1426	* Anyone single stepping on the host side? If so, we'll have to use the
1427	* trap flag in the guest EFLAGS since AMD-V doesn't have a trap flag on
1428	* the VMM level like the VT-x implementations does.
1429	*/
1430	bool const fStepping = pVCpu->hm.s.fSingleInstruction \|\| DBGFIsStepping(pVCpu);
1431	if (fStepping)
1432	{
1433	pVCpu->hm.s.fClearTrapFlag = true;
1434	pVmcb->guest.u64RFlags \|= X86_EFL_TF;
1435	fInterceptDB = true;
1436	fInterceptMovDRx = true; /* Need clean DR6, no guest mess. */
1437	}
1438
1439	if ( fStepping
1440	\|\| (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
1441	{
1442	/*
1443	* Use the combined guest and host DRx values found in the hypervisor
1444	* register set because the debugger has breakpoints active or someone
1445	* is single stepping on the host side.
1446	*
1447	* Note! DBGF expects a clean DR6 state before executing guest code.
1448	*/
1449	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1450	if ( CPUMIsGuestInLongModeEx(pCtx)
1451	&& !CPUMIsHyperDebugStateActivePending(pVCpu))
1452	{
1453	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1454	Assert(!CPUMIsGuestDebugStateActivePending(pVCpu));
1455	Assert(CPUMIsHyperDebugStateActivePending(pVCpu));
1456	}
1457	else
1458	#endif
1459	if (!CPUMIsHyperDebugStateActive(pVCpu))
1460	{
1461	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1462	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
1463	Assert(CPUMIsHyperDebugStateActive(pVCpu));
1464	}
1465
1466	/* Update DR6 & DR7. (The other DRx values are handled by CPUM one way or the other.) */
1467	if ( pVmcb->guest.u64DR6 != X86_DR6_INIT_VAL
1468	\|\| pVmcb->guest.u64DR7 != CPUMGetHyperDR7(pVCpu))
1469	{
1470	pVmcb->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
1471	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
1472	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1473	pVCpu->hm.s.fUsingHyperDR7 = true;
1474	}
1475
1476	/** @todo If we cared, we could optimize to allow the guest to read registers
1477	* with the same values. */
1478	fInterceptDB = true;
1479	fInterceptMovDRx = true;
1480	Log5(("hmR0SvmLoadSharedDebugState: Loaded hyper DRx\n"));
1481	}
1482	else
1483	{
1484	/*
1485	* Update DR6, DR7 with the guest values if necessary.
1486	*/
1487	if ( pVmcb->guest.u64DR7 != pCtx->dr[7]
1488	\|\| pVmcb->guest.u64DR6 != pCtx->dr[6])
1489	{
1490	pVmcb->guest.u64DR7 = pCtx->dr[7];
1491	pVmcb->guest.u64DR6 = pCtx->dr[6];
1492	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1493	pVCpu->hm.s.fUsingHyperDR7 = false;
1494	}
1495
1496	/*
1497	* If the guest has enabled debug registers, we need to load them prior to
1498	* executing guest code so they'll trigger at the right time.
1499	*/
1500	if (pCtx->dr[7] & (X86_DR7_ENABLED_MASK \| X86_DR7_GD)) /** @todo Why GD? */
1501	{
1502	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1503	if ( CPUMIsGuestInLongModeEx(pCtx)
1504	&& !CPUMIsGuestDebugStateActivePending(pVCpu))
1505	{
1506	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1507	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1508	Assert(!CPUMIsHyperDebugStateActivePending(pVCpu));
1509	Assert(CPUMIsGuestDebugStateActivePending(pVCpu));
1510	}
1511	else
1512	#endif
1513	if (!CPUMIsGuestDebugStateActive(pVCpu))
1514	{
1515	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1516	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1517	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
1518	Assert(CPUMIsGuestDebugStateActive(pVCpu));
1519	}
1520	Log5(("hmR0SvmLoadSharedDebugState: Loaded guest DRx\n"));
1521	}
1522	/*
1523	* If no debugging enabled, we'll lazy load DR0-3. We don't need to
1524	* intercept #DB as DR6 is updated in the VMCB.
1525	*/
1526	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1527	else if ( !CPUMIsGuestDebugStateActivePending(pVCpu)
1528	&& !CPUMIsGuestDebugStateActive(pVCpu))
1529	#else
1530	else if (!CPUMIsGuestDebugStateActive(pVCpu))
1531	#endif
1532	{
1533	fInterceptMovDRx = true;
1534	}
1535	}
1536
1537	/*
1538	* Set up the intercepts.
1539	*/
1540	if (fInterceptDB)
1541	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_DB);
1542	else
1543	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_DB);
1544
1545	if (fInterceptMovDRx)
1546	{
1547	if ( pVmcb->ctrl.u16InterceptRdDRx != 0xffff
1548	\|\| pVmcb->ctrl.u16InterceptWrDRx != 0xffff)
1549	{
1550	pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
1551	pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
1552	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1553	}
1554	}
1555	else
1556	{
1557	if ( pVmcb->ctrl.u16InterceptRdDRx
1558	\|\| pVmcb->ctrl.u16InterceptWrDRx)
1559	{
1560	pVmcb->ctrl.u16InterceptRdDRx = 0;
1561	pVmcb->ctrl.u16InterceptWrDRx = 0;
1562	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1563	}
1564	}
1565
1566	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_DEBUG);
1567	}
1568
1569
1570	/**
1571	* Loads the guest APIC state (currently just the TPR).
1572	*
1573	* @returns VBox status code.
1574	* @param pVCpu Pointer to the VMCPU.
1575	* @param pVmcb Pointer to the VM control block.
1576	* @param pCtx Pointer to the guest-CPU context.
1577	*/
1578	static int hmR0SvmLoadGuestApicState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1579	{
1580	if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE))
1581	return VINF_SUCCESS;
1582
1583	bool fPendingIntr;
1584	uint8_t u8Tpr;
1585	int rc = PDMApicGetTPR(pVCpu, &u8Tpr, &fPendingIntr, NULL /* pu8PendingIrq */);
1586	AssertRCReturn(rc, rc);
1587
1588	/* Assume that we need to trap all TPR accesses and thus need not check on
1589	every #VMEXIT if we should update the TPR. */
1590	Assert(pVmcb->ctrl.IntCtrl.n.u1VIrqMasking);
1591	pVCpu->hm.s.svm.fSyncVTpr = false;
1592
1593	/* 32-bit guests uses LSTAR MSR for patching guest code which touches the TPR. */
1594	if (pVCpu->CTX_SUFF(pVM)->hm.s.fTPRPatchingActive)
1595	{
1596	pCtx->msrLSTAR = u8Tpr;
1597
1598	/* If there are interrupts pending, intercept LSTAR writes, otherwise don't intercept reads or writes. */
1599	if (fPendingIntr)
1600	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_INTERCEPT_WRITE);
1601	else
1602	{
1603	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1604	pVCpu->hm.s.svm.fSyncVTpr = true;
1605	}
1606	}
1607	else
1608	{
1609	/* Bits 3-0 of the VTPR field correspond to bits 7-4 of the TPR (which is the Task-Priority Class). */
1610	pVmcb->ctrl.IntCtrl.n.u8VTPR = (u8Tpr >> 4);
1611
1612	/* If there are interrupts pending, intercept CR8 writes to evaluate ASAP if we can deliver the interrupt to the guest. */
1613	if (fPendingIntr)
1614	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
1615	else
1616	{
1617	pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
1618	pVCpu->hm.s.svm.fSyncVTpr = true;
1619	}
1620
1621	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_TPR);
1622	}
1623
1624	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
1625	return rc;
1626	}
1627
1628
1629	/**
1630	* Sets up the appropriate function to run guest code.
1631	*
1632	* @returns VBox status code.
1633	* @param pVCpu Pointer to the VMCPU.
1634	* @param pCtx Pointer to the guest-CPU context.
1635	*
1636	* @remarks No-long-jump zone!!!
1637	*/
1638	static int hmR0SvmSetupVMRunHandler(PVMCPU pVCpu, PCPUMCTX pCtx)
1639	{
1640	if (CPUMIsGuestInLongModeEx(pCtx))
1641	{
1642	#ifndef VBOX_ENABLE_64_BITS_GUESTS
1643	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1644	#endif
1645	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fAllow64BitGuests); /* Guaranteed by hmR3InitFinalizeR0(). */
1646	#if HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1647	/* 32-bit host. We need to switch to 64-bit before running the 64-bit guest. */
1648	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
1649	#else
1650	/* 64-bit host or hybrid host. */
1651	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun64;
1652	#endif
1653	}
1654	else
1655	{
1656	/* Guest is not in long mode, use the 32-bit handler. */
1657	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun;
1658	}
1659	return VINF_SUCCESS;
1660	}
1661
1662
1663	/**
1664	* Enters the AMD-V session.
1665	*
1666	* @returns VBox status code.
1667	* @param pVM Pointer to the VM.
1668	* @param pVCpu Pointer to the VMCPU.
1669	* @param pCpu Pointer to the CPU info struct.
1670	*/
1671	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHMGLOBALCPUINFO pCpu)
1672	{
1673	AssertPtr(pVM);
1674	AssertPtr(pVCpu);
1675	Assert(pVM->hm.s.svm.fSupported);
1676	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1677	NOREF(pVM); NOREF(pCpu);
1678
1679	LogFlowFunc(("pVM=%p pVCpu=%p\n", pVM, pVCpu));
1680	Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE));
1681
1682	pVCpu->hm.s.fLeaveDone = false;
1683	return VINF_SUCCESS;
1684	}
1685
1686
1687	/**
1688	* Thread-context callback for AMD-V.
1689	*
1690	* @param enmEvent The thread-context event.
1691	* @param pVCpu Pointer to the VMCPU.
1692	* @param fGlobalInit Whether global VT-x/AMD-V init. is used.
1693	* @thread EMT(pVCpu)
1694	*/
1695	VMMR0DECL(void) SVMR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPU pVCpu, bool fGlobalInit)
1696	{
1697	NOREF(fGlobalInit);
1698
1699	switch (enmEvent)
1700	{
1701	case RTTHREADCTXEVENT_PREEMPTING:
1702	{
1703	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1704	Assert(VMMR0ThreadCtxHooksAreRegistered(pVCpu));
1705	VMCPU_ASSERT_EMT(pVCpu);
1706
1707	PVM pVM = pVCpu->CTX_SUFF(pVM);
1708	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1709
1710	/* No longjmps (log-flush, locks) in this fragile context. */
1711	VMMRZCallRing3Disable(pVCpu);
1712
1713	if (!pVCpu->hm.s.fLeaveDone)
1714	{
1715	hmR0SvmLeave(pVM, pVCpu, pCtx);
1716	pVCpu->hm.s.fLeaveDone = true;
1717	}
1718
1719	/* Leave HM context, takes care of local init (term). */
1720	int rc = HMR0LeaveCpu(pVCpu);
1721	AssertRC(rc); NOREF(rc);
1722
1723	/* Restore longjmp state. */
1724	VMMRZCallRing3Enable(pVCpu);
1725	STAM_COUNTER_INC(&pVCpu->hm.s.StatPreemptPreempting);
1726	break;
1727	}
1728
1729	case RTTHREADCTXEVENT_RESUMED:
1730	{
1731	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1732	Assert(VMMR0ThreadCtxHooksAreRegistered(pVCpu));
1733	VMCPU_ASSERT_EMT(pVCpu);
1734
1735	/* No longjmps (log-flush, locks) in this fragile context. */
1736	VMMRZCallRing3Disable(pVCpu);
1737
1738	/*
1739	* Initialize the bare minimum state required for HM. This takes care of
1740	* initializing AMD-V if necessary (onlined CPUs, local init etc.)
1741	*/
1742	int rc = HMR0EnterCpu(pVCpu);
1743	AssertRC(rc); NOREF(rc);
1744	Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE));
1745
1746	pVCpu->hm.s.fLeaveDone = false;
1747
1748	/* Restore longjmp state. */
1749	VMMRZCallRing3Enable(pVCpu);
1750	break;
1751	}
1752
1753	default:
1754	break;
1755	}
1756	}
1757
1758
1759	/**
1760	* Saves the host state.
1761	*
1762	* @returns VBox status code.
1763	* @param pVM Pointer to the VM.
1764	* @param pVCpu Pointer to the VMCPU.
1765	*
1766	* @remarks No-long-jump zone!!!
1767	*/
1768	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
1769	{
1770	NOREF(pVM);
1771	NOREF(pVCpu);
1772	/* Nothing to do here. AMD-V does this for us automatically during the world-switch. */
1773	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT);
1774	return VINF_SUCCESS;
1775	}
1776
1777
1778	/**
1779	* Loads the guest state into the VMCB. The CPU state will be loaded from these
1780	* fields on every successful VM-entry.
1781	*
1782	* Also sets up the appropriate VMRUN function to execute guest code based on
1783	* the guest CPU mode.
1784	*
1785	* @returns VBox status code.
1786	* @param pVM Pointer to the VM.
1787	* @param pVCpu Pointer to the VMCPU.
1788	* @param pCtx Pointer to the guest-CPU context.
1789	*
1790	* @remarks No-long-jump zone!!!
1791	*/
1792	static int hmR0SvmLoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
1793	{
1794	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
1795	AssertMsgReturn(pVmcb, ("Invalid pVmcb\n"), VERR_SVM_INVALID_PVMCB);
1796
1797	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
1798
1799	int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcb, pCtx);
1800	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestControlRegs! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1801
1802	hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcb, pCtx);
1803	hmR0SvmLoadGuestMsrs(pVCpu, pVmcb, pCtx);
1804
1805	pVmcb->guest.u64RIP = pCtx->rip;
1806	pVmcb->guest.u64RSP = pCtx->rsp;
1807	pVmcb->guest.u64RFlags = pCtx->eflags.u32;
1808	pVmcb->guest.u64RAX = pCtx->rax;
1809
1810	rc = hmR0SvmLoadGuestApicState(pVCpu, pVmcb, pCtx);
1811	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestApicState! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1812
1813	rc = hmR0SvmSetupVMRunHandler(pVCpu, pCtx);
1814	AssertLogRelMsgRCReturn(rc, ("hmR0SvmSetupVMRunHandler! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1815
1816	/* Clear any unused and reserved bits. */
1817	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
1818	\| HM_CHANGED_GUEST_RSP
1819	\| HM_CHANGED_GUEST_RFLAGS
1820	\| HM_CHANGED_GUEST_SYSENTER_CS_MSR
1821	\| HM_CHANGED_GUEST_SYSENTER_EIP_MSR
1822	\| HM_CHANGED_GUEST_SYSENTER_ESP_MSR
1823	\| HM_CHANGED_GUEST_LAZY_MSRS /* Unused. */
1824	\| HM_CHANGED_SVM_RESERVED1 /* Reserved. */
1825	\| HM_CHANGED_SVM_RESERVED2
1826	\| HM_CHANGED_SVM_RESERVED3
1827	\| HM_CHANGED_SVM_RESERVED4);
1828
1829	/* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
1830	AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
1831	\|\| HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE),
1832	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
1833
1834	Log4(("Load: CS:RIP=%04x:%RX64 EFL=%#x SS:RSP=%04x:%RX64\n", pCtx->cs.Sel, pCtx->rip, pCtx->eflags.u, pCtx->ss, pCtx->rsp));
1835	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
1836	return rc;
1837	}
1838
1839
1840	/**
1841	* Loads the state shared between the host and guest into the
1842	* VMCB.
1843	*
1844	* @param pVCpu Pointer to the VMCPU.
1845	* @param pVmcb Pointer to the VM control block.
1846	* @param pCtx Pointer to the guest-CPU context.
1847	*
1848	* @remarks No-long-jump zone!!!
1849	*/
1850	static void hmR0SvmLoadSharedState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1851	{
1852	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1853	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
1854
1855	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
1856	hmR0SvmLoadSharedCR0(pVCpu, pVmcb, pCtx);
1857
1858	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
1859	hmR0SvmLoadSharedDebugState(pVCpu, pVmcb, pCtx);
1860
1861	/* Unused on AMD-V. */
1862	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LAZY_MSRS);
1863
1864	AssertMsg(!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE),
1865	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
1866	}
1867
1868
1869	/**
1870	* Saves the entire guest state from the VMCB into the
1871	* guest-CPU context. Currently there is no residual state left in the CPU that
1872	* is not updated in the VMCB.
1873	*
1874	* @returns VBox status code.
1875	* @param pVCpu Pointer to the VMCPU.
1876	* @param pMixedCtx Pointer to the guest-CPU context. The data may be
1877	* out-of-sync. Make sure to update the required fields
1878	* before using them.
1879	*/
1880	static void hmR0SvmSaveGuestState(PVMCPU pVCpu, PCPUMCTX pMixedCtx)
1881	{
1882	Assert(VMMRZCallRing3IsEnabled(pVCpu));
1883
1884	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
1885
1886	pMixedCtx->rip = pVmcb->guest.u64RIP;
1887	pMixedCtx->rsp = pVmcb->guest.u64RSP;
1888	pMixedCtx->eflags.u32 = pVmcb->guest.u64RFlags;
1889	pMixedCtx->rax = pVmcb->guest.u64RAX;
1890
1891	/*
1892	* Guest interrupt shadow.
1893	*/
1894	if (pVmcb->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
1895	EMSetInhibitInterruptsPC(pVCpu, pMixedCtx->rip);
1896	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
1897	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
1898
1899	/*
1900	* Guest Control registers: CR2, CR3 (handled at the end) - accesses to other control registers are always intercepted.
1901	*/
1902	pMixedCtx->cr2 = pVmcb->guest.u64CR2;
1903
1904	/*
1905	* Guest MSRs.
1906	*/
1907	pMixedCtx->msrSTAR = pVmcb->guest.u64STAR; /* legacy syscall eip, cs & ss */
1908	pMixedCtx->msrLSTAR = pVmcb->guest.u64LSTAR; /* 64-bit mode syscall rip */
1909	pMixedCtx->msrCSTAR = pVmcb->guest.u64CSTAR; /* compatibility mode syscall rip */
1910	pMixedCtx->msrSFMASK = pVmcb->guest.u64SFMASK; /* syscall flag mask */
1911	pMixedCtx->msrKERNELGSBASE = pVmcb->guest.u64KernelGSBase; /* swapgs exchange value */
1912	pMixedCtx->SysEnter.cs = pVmcb->guest.u64SysEnterCS;
1913	pMixedCtx->SysEnter.eip = pVmcb->guest.u64SysEnterEIP;
1914	pMixedCtx->SysEnter.esp = pVmcb->guest.u64SysEnterESP;
1915
1916	/*
1917	* Guest segment registers (includes FS, GS base MSRs for 64-bit guests).
1918	*/
1919	HMSVM_SAVE_SEG_REG(CS, cs);
1920	HMSVM_SAVE_SEG_REG(SS, ss);
1921	HMSVM_SAVE_SEG_REG(DS, ds);
1922	HMSVM_SAVE_SEG_REG(ES, es);
1923	HMSVM_SAVE_SEG_REG(FS, fs);
1924	HMSVM_SAVE_SEG_REG(GS, gs);
1925
1926	/*
1927	* Correct the hidden CS granularity bit. Haven't seen it being wrong in any other
1928	* register (yet).
1929	*/
1930	/** @todo SELM might need to be fixed as it too should not care about the
1931	* granularity bit. See @bugref{6785}. */
1932	if ( !pMixedCtx->cs.Attr.n.u1Granularity
1933	&& pMixedCtx->cs.Attr.n.u1Present
1934	&& pMixedCtx->cs.u32Limit > UINT32_C(0xfffff))
1935	{
1936	Assert((pMixedCtx->cs.u32Limit & 0xfff) == 0xfff);
1937	pMixedCtx->cs.Attr.n.u1Granularity = 1;
1938	}
1939
1940	#ifdef VBOX_STRICT
1941	# define HMSVM_ASSERT_SEG_GRANULARITY(reg) \
1942	AssertMsg( !pMixedCtx->reg.Attr.n.u1Present \
1943	\|\| ( pMixedCtx->reg.Attr.n.u1Granularity \
1944	? (pMixedCtx->reg.u32Limit & 0xfff) == 0xfff \
1945	: pMixedCtx->reg.u32Limit <= UINT32_C(0xfffff)), \
1946	("Invalid Segment Attributes Limit=%#RX32 Attr=%#RX32 Base=%#RX64\n", pMixedCtx->reg.u32Limit, \
1947	pMixedCtx->reg.Attr.u, pMixedCtx->reg.u64Base))
1948
1949	HMSVM_ASSERT_SEG_GRANULARITY(cs);
1950	HMSVM_ASSERT_SEG_GRANULARITY(ss);
1951	HMSVM_ASSERT_SEG_GRANULARITY(ds);
1952	HMSVM_ASSERT_SEG_GRANULARITY(es);
1953	HMSVM_ASSERT_SEG_GRANULARITY(fs);
1954	HMSVM_ASSERT_SEG_GRANULARITY(gs);
1955
1956	# undef HMSVM_ASSERT_SEL_GRANULARITY
1957	#endif
1958
1959	/*
1960	* Sync the hidden SS DPL field. AMD CPUs have a separate CPL field in the VMCB and uses that
1961	* and thus it's possible that when the CPL changes during guest execution that the SS DPL
1962	* isn't updated by AMD-V. Observed on some AMD Fusion CPUs with 64-bit guests.
1963	* See AMD spec. 15.5.1 "Basic operation".
1964	*/
1965	Assert(!(pVmcb->guest.u8CPL & ~0x3));
1966	pMixedCtx->ss.Attr.n.u2Dpl = pVmcb->guest.u8CPL & 0x3;
1967
1968	/*
1969	* Guest TR.
1970	* Fixup TR attributes so it's compatible with Intel. Important when saved-states are used
1971	* between Intel and AMD. See @bugref{6208} comment #39.
1972	*/
1973	HMSVM_SAVE_SEG_REG(TR, tr);
1974	if (CPUMIsGuestInLongModeEx(pMixedCtx))
1975	pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
1976
1977	/*
1978	* Guest Descriptor-Table registers.
1979	*/
1980	HMSVM_SAVE_SEG_REG(LDTR, ldtr);
1981	pMixedCtx->gdtr.cbGdt = pVmcb->guest.GDTR.u32Limit;
1982	pMixedCtx->gdtr.pGdt = pVmcb->guest.GDTR.u64Base;
1983
1984	pMixedCtx->idtr.cbIdt = pVmcb->guest.IDTR.u32Limit;
1985	pMixedCtx->idtr.pIdt = pVmcb->guest.IDTR.u64Base;
1986
1987	/*
1988	* Guest Debug registers.
1989	*/
1990	if (!pVCpu->hm.s.fUsingHyperDR7)
1991	{
1992	pMixedCtx->dr[6] = pVmcb->guest.u64DR6;
1993	pMixedCtx->dr[7] = pVmcb->guest.u64DR7;
1994	}
1995	else
1996	{
1997	Assert(pVmcb->guest.u64DR7 == CPUMGetHyperDR7(pVCpu));
1998	CPUMSetHyperDR6(pVCpu, pVmcb->guest.u64DR6);
1999	}
2000
2001	/*
2002	* With Nested Paging, CR3 changes are not intercepted. Therefore, sync. it now.
2003	* This is done as the very last step of syncing the guest state, as PGMUpdateCR3() may cause longjmp's to ring-3.
2004	*/
2005	if ( pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging
2006	&& pMixedCtx->cr3 != pVmcb->guest.u64CR3)
2007	{
2008	CPUMSetGuestCR3(pVCpu, pVmcb->guest.u64CR3);
2009	PGMUpdateCR3(pVCpu, pVmcb->guest.u64CR3);
2010	}
2011	}
2012
2013
2014	/**
2015	* Does the necessary state syncing before returning to ring-3 for any reason
2016	* (longjmp, preemption, voluntary exits to ring-3) from AMD-V.
2017	*
2018	* @param pVM Pointer to the VM.
2019	* @param pVCpu Pointer to the VMCPU.
2020	* @param pMixedCtx Pointer to the guest-CPU context.
2021	*
2022	* @remarks No-long-jmp zone!!!
2023	*/
2024	static void hmR0SvmLeave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2025	{
2026	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2027	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2028	Assert(VMMR0IsLogFlushDisabled(pVCpu));
2029
2030	/*
2031	* !!! IMPORTANT !!!
2032	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
2033	*/
2034
2035	/* Restore host FPU state if necessary and resync on next R0 reentry .*/
2036	if (CPUMIsGuestFPUStateActive(pVCpu))
2037	{
2038	CPUMR0SaveGuestFPU(pVM, pVCpu, pCtx);
2039	Assert(!CPUMIsGuestFPUStateActive(pVCpu));
2040	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
2041	}
2042
2043	/*
2044	* Restore host debug registers if necessary and resync on next R0 reentry.
2045	*/
2046	#ifdef VBOX_STRICT
2047	if (CPUMIsHyperDebugStateActive(pVCpu))
2048	{
2049	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2050	Assert(pVmcb->ctrl.u16InterceptRdDRx == 0xffff);
2051	Assert(pVmcb->ctrl.u16InterceptWrDRx == 0xffff);
2052	}
2053	#endif
2054	if (CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */))
2055	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
2056
2057	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
2058	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
2059
2060	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
2061	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatLoadGuestState);
2062	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit1);
2063	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit2);
2064	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
2065
2066	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
2067	}
2068
2069
2070	/**
2071	* Leaves the AMD-V session.
2072	*
2073	* @returns VBox status code.
2074	* @param pVM Pointer to the VM.
2075	* @param pVCpu Pointer to the VMCPU.
2076	* @param pCtx Pointer to the guest-CPU context.
2077	*/
2078	static int hmR0SvmLeaveSession(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2079	{
2080	HM_DISABLE_PREEMPT_IF_NEEDED();
2081	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2082	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2083
2084	/* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
2085	and done this from the SVMR0ThreadCtxCallback(). */
2086	if (!pVCpu->hm.s.fLeaveDone)
2087	{
2088	hmR0SvmLeave(pVM, pVCpu, pCtx);
2089	pVCpu->hm.s.fLeaveDone = true;
2090	}
2091
2092	/*
2093	* !!! IMPORTANT !!!
2094	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
2095	*/
2096
2097	/* Deregister hook now that we've left HM context before re-enabling preemption. */
2098	if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
2099	VMMR0ThreadCtxHooksDeregister(pVCpu);
2100
2101	/* Leave HM context. This takes care of local init (term). */
2102	int rc = HMR0LeaveCpu(pVCpu);
2103
2104	HM_RESTORE_PREEMPT_IF_NEEDED();
2105	return rc;
2106	}
2107
2108
2109	/**
2110	* Does the necessary state syncing before doing a longjmp to ring-3.
2111	*
2112	* @returns VBox status code.
2113	* @param pVM Pointer to the VM.
2114	* @param pVCpu Pointer to the VMCPU.
2115	* @param pCtx Pointer to the guest-CPU context.
2116	*
2117	* @remarks No-long-jmp zone!!!
2118	*/
2119	static int hmR0SvmLongJmpToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2120	{
2121	return hmR0SvmLeaveSession(pVM, pVCpu, pCtx);
2122	}
2123
2124
2125	/**
2126	* VMMRZCallRing3() callback wrapper which saves the guest state (or restores
2127	* any remaining host state) before we longjump to ring-3 and possibly get
2128	* preempted.
2129	*
2130	* @param pVCpu Pointer to the VMCPU.
2131	* @param enmOperation The operation causing the ring-3 longjump.
2132	* @param pvUser The user argument (pointer to the possibly
2133	* out-of-date guest-CPU context).
2134	*/
2135	DECLCALLBACK(int) hmR0SvmCallRing3Callback(PVMCPU pVCpu, VMMCALLRING3 enmOperation, void *pvUser)
2136	{
2137	if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
2138	{
2139	/*
2140	* !!! IMPORTANT !!!
2141	* If you modify code here, make sure to check whether hmR0SvmLeave() and hmR0SvmLeaveSession() needs
2142	* to be updated too. This is a stripped down version which gets out ASAP trying to not trigger any assertion.
2143	*/
2144	VMMRZCallRing3RemoveNotification(pVCpu);
2145	VMMRZCallRing3Disable(pVCpu);
2146	HM_DISABLE_PREEMPT_IF_NEEDED();
2147
2148	/* Restore host FPU state if necessary and resync on next R0 reentry .*/
2149	if (CPUMIsGuestFPUStateActive(pVCpu))
2150	CPUMR0SaveGuestFPU(pVCpu->CTX_SUFF(pVM), pVCpu, (PCPUMCTX)pvUser);
2151
2152	/* Restore host debug registers if necessary and resync on next R0 reentry. */
2153	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
2154
2155	/* Deregister hook now that we've left HM context before re-enabling preemption. */
2156	if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
2157	VMMR0ThreadCtxHooksDeregister(pVCpu);
2158
2159	/* Leave HM context. This takes care of local init (term). */
2160	HMR0LeaveCpu(pVCpu);
2161
2162	HM_RESTORE_PREEMPT_IF_NEEDED();
2163	return VINF_SUCCESS;
2164	}
2165
2166	Assert(pVCpu);
2167	Assert(pvUser);
2168	Assert(VMMRZCallRing3IsEnabled(pVCpu));
2169	HMSVM_ASSERT_PREEMPT_SAFE();
2170
2171	VMMRZCallRing3Disable(pVCpu);
2172	Assert(VMMR0IsLogFlushDisabled(pVCpu));
2173
2174	Log4(("hmR0SvmCallRing3Callback->hmR0SvmLongJmpToRing3\n"));
2175	int rc = hmR0SvmLongJmpToRing3(pVCpu->CTX_SUFF(pVM), pVCpu, (PCPUMCTX)pvUser);
2176	AssertRCReturn(rc, rc);
2177
2178	VMMRZCallRing3Enable(pVCpu);
2179	return VINF_SUCCESS;
2180	}
2181
2182
2183	/**
2184	* Take necessary actions before going back to ring-3.
2185	*
2186	* An action requires us to go back to ring-3. This function does the necessary
2187	* steps before we can safely return to ring-3. This is not the same as longjmps
2188	* to ring-3, this is voluntary.
2189	*
2190	* @param pVM Pointer to the VM.
2191	* @param pVCpu Pointer to the VMCPU.
2192	* @param pCtx Pointer to the guest-CPU context.
2193	* @param rcExit The reason for exiting to ring-3. Can be
2194	* VINF_VMM_UNKNOWN_RING3_CALL.
2195	*/
2196	static void hmR0SvmExitToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, int rcExit)
2197	{
2198	Assert(pVM);
2199	Assert(pVCpu);
2200	Assert(pCtx);
2201	HMSVM_ASSERT_PREEMPT_SAFE();
2202
2203	/* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
2204	VMMRZCallRing3Disable(pVCpu);
2205	Log4(("hmR0SvmExitToRing3: rcExit=%d\n", rcExit));
2206
2207	/* We need to do this only while truly exiting the "inner loop" back to ring-3 and -not- for any longjmp to ring3. */
2208	if (pVCpu->hm.s.Event.fPending)
2209	{
2210	hmR0SvmPendingEventToTrpmTrap(pVCpu);
2211	Assert(!pVCpu->hm.s.Event.fPending);
2212	}
2213
2214	/* If we're emulating an instruction, we shouldn't have any TRPM traps pending
2215	and if we're injecting an event we should have a TRPM trap pending. */
2216	Assert(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT \|\| TRPMHasTrap(pVCpu));
2217	Assert(rcExit != VINF_EM_RAW_EMULATE_INSTR \|\| !TRPMHasTrap(pVCpu));
2218
2219	/* Sync. the necessary state for going back to ring-3. */
2220	hmR0SvmLeaveSession(pVM, pVCpu, pCtx);
2221	STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
2222
2223	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
2224	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
2225	\| CPUM_CHANGED_LDTR
2226	\| CPUM_CHANGED_GDTR
2227	\| CPUM_CHANGED_IDTR
2228	\| CPUM_CHANGED_TR
2229	\| CPUM_CHANGED_HIDDEN_SEL_REGS);
2230	if ( pVM->hm.s.fNestedPaging
2231	&& CPUMIsGuestPagingEnabledEx(pCtx))
2232	{
2233	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
2234	}
2235
2236	/* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
2237	if (rcExit != VINF_EM_RAW_INTERRUPT)
2238	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
2239
2240	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
2241
2242	/* We do -not- want any longjmp notifications after this! We must return to ring-3 ASAP. */
2243	VMMRZCallRing3RemoveNotification(pVCpu);
2244	VMMRZCallRing3Enable(pVCpu);
2245	}
2246
2247
2248	/**
2249	* Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
2250	* intercepts.
2251	*
2252	* @param pVCpu Pointer to the VMCPU.
2253	*
2254	* @remarks No-long-jump zone!!!
2255	*/
2256	static void hmR0SvmUpdateTscOffsetting(PVMCPU pVCpu)
2257	{
2258	bool fParavirtTsc = false;
2259	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2260	if (TMCpuTickCanUseRealTSC(pVCpu, &pVmcb->ctrl.u64TSCOffset, &fParavirtTsc))
2261	{
2262	uint64_t u64CurTSC = ASMReadTSC();
2263	uint64_t u64LastTick = TMCpuTickGetLastSeen(pVCpu);
2264	if (fParavirtTsc)
2265	{
2266	#if 0
2267	if (u64CurTSC + pVmcb->ctrl.u64TSCOffset > u64LastTick)
2268	{
2269	pVmcb->ctrl.u64TSCOffset = u64LastTick - u64CurTSC;
2270	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffsetAdjusted);
2271	}
2272	int rc = GIMR0UpdateParavirtTsc(pVCpu->CTX_SUFF(pVM), pVmcb->ctrl.u64TSCOffset);
2273	AssertRC(rc);
2274	#endif
2275	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
2276	}
2277
2278	if (u64CurTSC + pVmcb->ctrl.u64TSCOffset >= TMCpuTickGetLastSeen(pVCpu))
2279	{
2280	pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
2281	pVmcb->ctrl.u32InterceptCtrl2 &= ~SVM_CTRL2_INTERCEPT_RDTSCP;
2282	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
2283	}
2284	else
2285	{
2286	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
2287	pVmcb->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
2288	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscInterceptOverFlow);
2289	}
2290	}
2291	else
2292	{
2293	Assert(!fParavirtTsc);
2294	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
2295	pVmcb->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
2296	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
2297	}
2298
2299	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2300	}
2301
2302
2303	/**
2304	* Sets an event as a pending event to be injected into the guest.
2305	*
2306	* @param pVCpu Pointer to the VMCPU.
2307	* @param pEvent Pointer to the SVM event.
2308	* @param GCPtrFaultAddress The fault-address (CR2) in case it's a
2309	* page-fault.
2310	*
2311	* @remarks Statistics counter assumes this is a guest event being reflected to
2312	* the guest i.e. 'StatInjectPendingReflect' is incremented always.
2313	*/
2314	DECLINLINE(void) hmR0SvmSetPendingEvent(PVMCPU pVCpu, PSVMEVENT pEvent, RTGCUINTPTR GCPtrFaultAddress)
2315	{
2316	Assert(!pVCpu->hm.s.Event.fPending);
2317	Assert(pEvent->n.u1Valid);
2318
2319	pVCpu->hm.s.Event.u64IntInfo = pEvent->u;
2320	pVCpu->hm.s.Event.fPending = true;
2321	pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
2322
2323	Log4(("hmR0SvmSetPendingEvent: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
2324	pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
2325
2326	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
2327	}
2328
2329
2330	/**
2331	* Injects an event into the guest upon VMRUN by updating the relevant field
2332	* in the VMCB.
2333	*
2334	* @param pVCpu Pointer to the VMCPU.
2335	* @param pVmcb Pointer to the guest VM control block.
2336	* @param pCtx Pointer to the guest-CPU context.
2337	* @param pEvent Pointer to the event.
2338	*
2339	* @remarks No-long-jump zone!!!
2340	* @remarks Requires CR0!
2341	*/
2342	DECLINLINE(void) hmR0SvmInjectEventVmcb(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx, PSVMEVENT pEvent)
2343	{
2344	NOREF(pVCpu); NOREF(pCtx);
2345
2346	pVmcb->ctrl.EventInject.u = pEvent->u;
2347	STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
2348
2349	Log4(("hmR0SvmInjectEventVmcb: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
2350	pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
2351	}
2352
2353
2354
2355	/**
2356	* Converts any TRPM trap into a pending HM event. This is typically used when
2357	* entering from ring-3 (not longjmp returns).
2358	*
2359	* @param pVCpu Pointer to the VMCPU.
2360	*/
2361	static void hmR0SvmTrpmTrapToPendingEvent(PVMCPU pVCpu)
2362	{
2363	Assert(TRPMHasTrap(pVCpu));
2364	Assert(!pVCpu->hm.s.Event.fPending);
2365
2366	uint8_t uVector;
2367	TRPMEVENT enmTrpmEvent;
2368	RTGCUINT uErrCode;
2369	RTGCUINTPTR GCPtrFaultAddress;
2370	uint8_t cbInstr;
2371
2372	int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr);
2373	AssertRC(rc);
2374
2375	SVMEVENT Event;
2376	Event.u = 0;
2377	Event.n.u1Valid = 1;
2378	Event.n.u8Vector = uVector;
2379
2380	/* Refer AMD spec. 15.20 "Event Injection" for the format. */
2381	if (enmTrpmEvent == TRPM_TRAP)
2382	{
2383	Event.n.u3Type = SVM_EVENT_EXCEPTION;
2384	switch (uVector)
2385	{
2386	case X86_XCPT_NMI:
2387	{
2388	Event.n.u3Type = SVM_EVENT_NMI;
2389	break;
2390	}
2391
2392	case X86_XCPT_PF:
2393	case X86_XCPT_DF:
2394	case X86_XCPT_TS:
2395	case X86_XCPT_NP:
2396	case X86_XCPT_SS:
2397	case X86_XCPT_GP:
2398	case X86_XCPT_AC:
2399	{
2400	Event.n.u1ErrorCodeValid = 1;
2401	Event.n.u32ErrorCode = uErrCode;
2402	break;
2403	}
2404	}
2405	}
2406	else if (enmTrpmEvent == TRPM_HARDWARE_INT)
2407	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
2408	else if (enmTrpmEvent == TRPM_SOFTWARE_INT)
2409	Event.n.u3Type = SVM_EVENT_SOFTWARE_INT;
2410	else
2411	AssertMsgFailed(("Invalid TRPM event type %d\n", enmTrpmEvent));
2412
2413	rc = TRPMResetTrap(pVCpu);
2414	AssertRC(rc);
2415
2416	Log4(("TRPM->HM event: u=%#RX64 u8Vector=%#x uErrorCodeValid=%RTbool uErrorCode=%#RX32\n", Event.u, Event.n.u8Vector,
2417	!!Event.n.u1ErrorCodeValid, Event.n.u32ErrorCode));
2418
2419	hmR0SvmSetPendingEvent(pVCpu, &Event, GCPtrFaultAddress);
2420	STAM_COUNTER_DEC(&pVCpu->hm.s.StatInjectPendingReflect);
2421	}
2422
2423
2424	/**
2425	* Converts any pending SVM event into a TRPM trap. Typically used when leaving
2426	* AMD-V to execute any instruction.
2427	*
2428	* @param pvCpu Pointer to the VMCPU.
2429	*/
2430	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu)
2431	{
2432	Assert(pVCpu->hm.s.Event.fPending);
2433	Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo /, NULL / pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
2434
2435	SVMEVENT Event;
2436	Event.u = pVCpu->hm.s.Event.u64IntInfo;
2437
2438	uint8_t uVector = Event.n.u8Vector;
2439	uint8_t uVectorType = Event.n.u3Type;
2440
2441	TRPMEVENT enmTrapType;
2442	switch (uVectorType)
2443	{
2444	case SVM_EVENT_EXTERNAL_IRQ:
2445	enmTrapType = TRPM_HARDWARE_INT;
2446	break;
2447	case SVM_EVENT_SOFTWARE_INT:
2448	enmTrapType = TRPM_SOFTWARE_INT;
2449	break;
2450	case SVM_EVENT_EXCEPTION:
2451	case SVM_EVENT_NMI:
2452	enmTrapType = TRPM_TRAP;
2453	break;
2454	default:
2455	AssertMsgFailed(("Invalid pending-event type %#x\n", uVectorType));
2456	enmTrapType = TRPM_32BIT_HACK;
2457	break;
2458	}
2459
2460	Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, uVectorType));
2461
2462	int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
2463	AssertRC(rc);
2464
2465	if (Event.n.u1ErrorCodeValid)
2466	TRPMSetErrorCode(pVCpu, Event.n.u32ErrorCode);
2467
2468	if ( uVectorType == SVM_EVENT_EXCEPTION
2469	&& uVector == X86_XCPT_PF)
2470	{
2471	TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
2472	Assert(pVCpu->hm.s.Event.GCPtrFaultAddress == CPUMGetGuestCR2(pVCpu));
2473	}
2474	else if (uVectorType == SVM_EVENT_SOFTWARE_INT)
2475	{
2476	AssertMsg( uVectorType == SVM_EVENT_SOFTWARE_INT
2477	\|\| (uVector == X86_XCPT_BP \|\| uVector == X86_XCPT_OF),
2478	("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
2479	TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
2480	}
2481	pVCpu->hm.s.Event.fPending = false;
2482	}
2483
2484
2485	/**
2486	* Gets the guest's interrupt-shadow.
2487	*
2488	* @returns The guest's interrupt-shadow.
2489	* @param pVCpu Pointer to the VMCPU.
2490	* @param pCtx Pointer to the guest-CPU context.
2491	*
2492	* @remarks No-long-jump zone!!!
2493	* @remarks Has side-effects with VMCPU_FF_INHIBIT_INTERRUPTS force-flag.
2494	*/
2495	DECLINLINE(uint32_t) hmR0SvmGetGuestIntrShadow(PVMCPU pVCpu, PCPUMCTX pCtx)
2496	{
2497	/*
2498	* Instructions like STI and MOV SS inhibit interrupts till the next instruction completes. Check if we should
2499	* inhibit interrupts or clear any existing interrupt-inhibition.
2500	*/
2501	uint32_t uIntrState = 0;
2502	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
2503	{
2504	if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
2505	{
2506	/*
2507	* We can clear the inhibit force flag as even if we go back to the recompiler without executing guest code in
2508	* AMD-V, the flag's condition to be cleared is met and thus the cleared state is correct.
2509	*/
2510	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
2511	}
2512	else
2513	uIntrState = SVM_INTERRUPT_SHADOW_ACTIVE;
2514	}
2515	return uIntrState;
2516	}
2517
2518
2519	/**
2520	* Sets the virtual interrupt intercept control in the VMCB which
2521	* instructs AMD-V to cause a #VMEXIT as soon as the guest is in a state to
2522	* receive interrupts.
2523	*
2524	* @param pVmcb Pointer to the VM control block.
2525	*/
2526	DECLINLINE(void) hmR0SvmSetVirtIntrIntercept(PSVMVMCB pVmcb)
2527	{
2528	if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_VINTR))
2529	{
2530	pVmcb->ctrl.IntCtrl.n.u1VIrqValid = 1; /* A virtual interrupt is pending. */
2531	pVmcb->ctrl.IntCtrl.n.u8VIrqVector = 0; /* Not necessary as we #VMEXIT for delivering the interrupt. */
2532	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
2533	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_TPR);
2534
2535	Log4(("Setting VINTR intercept\n"));
2536	}
2537	}
2538
2539
2540	/**
2541	* Sets the IRET intercept control in the VMCB which instructs AMD-V to cause a
2542	* #VMEXIT as soon as a guest starts executing an IRET. This is used to unblock
2543	* virtual NMIs.
2544	*
2545	* @param pVmcb Pointer to the VM control block.
2546	*/
2547	DECLINLINE(void) hmR0SvmSetIretIntercept(PSVMVMCB pVmcb)
2548	{
2549	if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_IRET))
2550	{
2551	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_IRET;
2552	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
2553
2554	Log4(("Setting IRET intercept\n"));
2555	}
2556	}
2557
2558
2559	/**
2560	* Clears the IRET intercept control in the VMCB.
2561	*
2562	* @param pVmcb Pointer to the VM control block.
2563	*/
2564	DECLINLINE(void) hmR0SvmClearIretIntercept(PSVMVMCB pVmcb)
2565	{
2566	if (pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_IRET)
2567	{
2568	pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_IRET;
2569	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
2570
2571	Log4(("Clearing IRET intercept\n"));
2572	}
2573	}
2574
2575
2576	/**
2577	* Evaluates the event to be delivered to the guest and sets it as the pending
2578	* event.
2579	*
2580	* @param pVCpu Pointer to the VMCPU.
2581	* @param pCtx Pointer to the guest-CPU context.
2582	*/
2583	static void hmR0SvmEvaluatePendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
2584	{
2585	Assert(!pVCpu->hm.s.Event.fPending);
2586	Log4Func(("\n"));
2587
2588	bool const fIntShadow = RT_BOOL(hmR0SvmGetGuestIntrShadow(pVCpu, pCtx));
2589	bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
2590	bool const fBlockNmi = RT_BOOL(VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS));
2591	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2592
2593	SVMEVENT Event;
2594	Event.u = 0;
2595	/** @todo SMI. SMIs take priority over NMIs. */
2596	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)) /* NMI. NMIs take priority over regular interrupts . */
2597	{
2598	if (fBlockNmi)
2599	hmR0SvmSetIretIntercept(pVmcb);
2600	else if (fIntShadow)
2601	hmR0SvmSetVirtIntrIntercept(pVmcb);
2602	else
2603	{
2604	Log4(("Pending NMI\n"));
2605
2606	Event.n.u1Valid = 1;
2607	Event.n.u8Vector = X86_XCPT_NMI;
2608	Event.n.u3Type = SVM_EVENT_NMI;
2609
2610	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
2611	hmR0SvmSetIretIntercept(pVmcb);
2612	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
2613	}
2614	}
2615	else if (VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)))
2616	{
2617	/*
2618	* Check if the guest can receive external interrupts (PIC/APIC). Once we do PDMGetInterrupt() we -must- deliver
2619	* the interrupt ASAP. We must not execute any guest code until we inject the interrupt which is why it is
2620	* evaluated here and not set as pending, solely based on the force-flags.
2621	*/
2622	if ( !fBlockInt
2623	&& !fIntShadow)
2624	{
2625	uint8_t u8Interrupt;
2626	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
2627	if (RT_SUCCESS(rc))
2628	{
2629	Log4(("Injecting external interrupt u8Interrupt=%#x\n", u8Interrupt));
2630
2631	Event.n.u1Valid = 1;
2632	Event.n.u8Vector = u8Interrupt;
2633	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
2634
2635	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
2636	}
2637	else
2638	{
2639	/** @todo Does this actually happen? If not turn it into an assertion. */
2640	Assert(!VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)));
2641	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
2642	}
2643	}
2644	else
2645	hmR0SvmSetVirtIntrIntercept(pVmcb);
2646	}
2647	}
2648
2649
2650	/**
2651	* Injects any pending events into the guest if the guest is in a state to
2652	* receive them.
2653	*
2654	* @param pVCpu Pointer to the VMCPU.
2655	* @param pCtx Pointer to the guest-CPU context.
2656	*/
2657	static void hmR0SvmInjectPendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
2658	{
2659	Assert(!TRPMHasTrap(pVCpu));
2660	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2661	Log4Func(("\n"));
2662
2663	bool const fIntShadow = RT_BOOL(hmR0SvmGetGuestIntrShadow(pVCpu, pCtx));
2664	bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
2665	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2666
2667	if (pVCpu->hm.s.Event.fPending) /* First, inject any pending HM events. */
2668	{
2669	SVMEVENT Event;
2670	Event.u = pVCpu->hm.s.Event.u64IntInfo;
2671	Assert(Event.n.u1Valid);
2672	#ifdef VBOX_STRICT
2673	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
2674	{
2675	Assert(!fBlockInt);
2676	Assert(!fIntShadow);
2677	}
2678	else if (Event.n.u3Type == SVM_EVENT_NMI)
2679	Assert(!fIntShadow);
2680	#endif
2681
2682	Log4(("Injecting pending HM event.\n"));
2683	hmR0SvmInjectEventVmcb(pVCpu, pVmcb, pCtx, &Event);
2684	pVCpu->hm.s.Event.fPending = false;
2685
2686	#ifdef VBOX_WITH_STATISTICS
2687	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
2688	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
2689	else
2690	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
2691	#endif
2692	}
2693
2694	/* Update the guest interrupt shadow in the VMCB. */
2695	pVmcb->ctrl.u64IntShadow = !!fIntShadow;
2696	NOREF(fBlockInt);
2697	}
2698
2699
2700	/**
2701	* Reports world-switch error and dumps some useful debug info.
2702	*
2703	* @param pVM Pointer to the VM.
2704	* @param pVCpu Pointer to the VMCPU.
2705	* @param rcVMRun The return code from VMRUN (or
2706	* VERR_SVM_INVALID_GUEST_STATE for invalid
2707	* guest-state).
2708	* @param pCtx Pointer to the guest-CPU context.
2709	*/
2710	static void hmR0SvmReportWorldSwitchError(PVM pVM, PVMCPU pVCpu, int rcVMRun, PCPUMCTX pCtx)
2711	{
2712	NOREF(pCtx);
2713	HMSVM_ASSERT_PREEMPT_SAFE();
2714	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2715
2716	if (rcVMRun == VERR_SVM_INVALID_GUEST_STATE)
2717	{
2718	HMDumpRegs(pVM, pVCpu, pCtx); NOREF(pVM);
2719	#ifdef VBOX_STRICT
2720	Log4(("ctrl.u64VmcbCleanBits %#RX64\n", pVmcb->ctrl.u64VmcbCleanBits));
2721	Log4(("ctrl.u16InterceptRdCRx %#x\n", pVmcb->ctrl.u16InterceptRdCRx));
2722	Log4(("ctrl.u16InterceptWrCRx %#x\n", pVmcb->ctrl.u16InterceptWrCRx));
2723	Log4(("ctrl.u16InterceptRdDRx %#x\n", pVmcb->ctrl.u16InterceptRdDRx));
2724	Log4(("ctrl.u16InterceptWrDRx %#x\n", pVmcb->ctrl.u16InterceptWrDRx));
2725	Log4(("ctrl.u32InterceptException %#x\n", pVmcb->ctrl.u32InterceptException));
2726	Log4(("ctrl.u32InterceptCtrl1 %#x\n", pVmcb->ctrl.u32InterceptCtrl1));
2727	Log4(("ctrl.u32InterceptCtrl2 %#x\n", pVmcb->ctrl.u32InterceptCtrl2));
2728	Log4(("ctrl.u64IOPMPhysAddr %#RX64\n", pVmcb->ctrl.u64IOPMPhysAddr));
2729	Log4(("ctrl.u64MSRPMPhysAddr %#RX64\n", pVmcb->ctrl.u64MSRPMPhysAddr));
2730	Log4(("ctrl.u64TSCOffset %#RX64\n", pVmcb->ctrl.u64TSCOffset));
2731
2732	Log4(("ctrl.TLBCtrl.u32ASID %#x\n", pVmcb->ctrl.TLBCtrl.n.u32ASID));
2733	Log4(("ctrl.TLBCtrl.u8TLBFlush %#x\n", pVmcb->ctrl.TLBCtrl.n.u8TLBFlush));
2734	Log4(("ctrl.TLBCtrl.u24Reserved %#x\n", pVmcb->ctrl.TLBCtrl.n.u24Reserved));
2735
2736	Log4(("ctrl.IntCtrl.u8VTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u8VTPR));
2737	Log4(("ctrl.IntCtrl.u1VIrqValid %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqValid));
2738	Log4(("ctrl.IntCtrl.u7Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u7Reserved));
2739	Log4(("ctrl.IntCtrl.u4VIrqPriority %#x\n", pVmcb->ctrl.IntCtrl.n.u4VIrqPriority));
2740	Log4(("ctrl.IntCtrl.u1IgnoreTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR));
2741	Log4(("ctrl.IntCtrl.u3Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u3Reserved));
2742	Log4(("ctrl.IntCtrl.u1VIrqMasking %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqMasking));
2743	Log4(("ctrl.IntCtrl.u6Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved));
2744	Log4(("ctrl.IntCtrl.u8VIrqVector %#x\n", pVmcb->ctrl.IntCtrl.n.u8VIrqVector));
2745	Log4(("ctrl.IntCtrl.u24Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u24Reserved));
2746
2747	Log4(("ctrl.u64IntShadow %#RX64\n", pVmcb->ctrl.u64IntShadow));
2748	Log4(("ctrl.u64ExitCode %#RX64\n", pVmcb->ctrl.u64ExitCode));
2749	Log4(("ctrl.u64ExitInfo1 %#RX64\n", pVmcb->ctrl.u64ExitInfo1));
2750	Log4(("ctrl.u64ExitInfo2 %#RX64\n", pVmcb->ctrl.u64ExitInfo2));
2751	Log4(("ctrl.ExitIntInfo.u8Vector %#x\n", pVmcb->ctrl.ExitIntInfo.n.u8Vector));
2752	Log4(("ctrl.ExitIntInfo.u3Type %#x\n", pVmcb->ctrl.ExitIntInfo.n.u3Type));
2753	Log4(("ctrl.ExitIntInfo.u1ErrorCodeValid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
2754	Log4(("ctrl.ExitIntInfo.u19Reserved %#x\n", pVmcb->ctrl.ExitIntInfo.n.u19Reserved));
2755	Log4(("ctrl.ExitIntInfo.u1Valid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1Valid));
2756	Log4(("ctrl.ExitIntInfo.u32ErrorCode %#x\n", pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
2757	Log4(("ctrl.NestedPaging %#RX64\n", pVmcb->ctrl.NestedPaging.u));
2758	Log4(("ctrl.EventInject.u8Vector %#x\n", pVmcb->ctrl.EventInject.n.u8Vector));
2759	Log4(("ctrl.EventInject.u3Type %#x\n", pVmcb->ctrl.EventInject.n.u3Type));
2760	Log4(("ctrl.EventInject.u1ErrorCodeValid %#x\n", pVmcb->ctrl.EventInject.n.u1ErrorCodeValid));
2761	Log4(("ctrl.EventInject.u19Reserved %#x\n", pVmcb->ctrl.EventInject.n.u19Reserved));
2762	Log4(("ctrl.EventInject.u1Valid %#x\n", pVmcb->ctrl.EventInject.n.u1Valid));
2763	Log4(("ctrl.EventInject.u32ErrorCode %#x\n", pVmcb->ctrl.EventInject.n.u32ErrorCode));
2764
2765	Log4(("ctrl.u64NestedPagingCR3 %#RX64\n", pVmcb->ctrl.u64NestedPagingCR3));
2766	Log4(("ctrl.u64LBRVirt %#RX64\n", pVmcb->ctrl.u64LBRVirt));
2767
2768	Log4(("guest.CS.u16Sel %RTsel\n", pVmcb->guest.CS.u16Sel));
2769	Log4(("guest.CS.u16Attr %#x\n", pVmcb->guest.CS.u16Attr));
2770	Log4(("guest.CS.u32Limit %#RX32\n", pVmcb->guest.CS.u32Limit));
2771	Log4(("guest.CS.u64Base %#RX64\n", pVmcb->guest.CS.u64Base));
2772	Log4(("guest.DS.u16Sel %#RTsel\n", pVmcb->guest.DS.u16Sel));
2773	Log4(("guest.DS.u16Attr %#x\n", pVmcb->guest.DS.u16Attr));
2774	Log4(("guest.DS.u32Limit %#RX32\n", pVmcb->guest.DS.u32Limit));
2775	Log4(("guest.DS.u64Base %#RX64\n", pVmcb->guest.DS.u64Base));
2776	Log4(("guest.ES.u16Sel %RTsel\n", pVmcb->guest.ES.u16Sel));
2777	Log4(("guest.ES.u16Attr %#x\n", pVmcb->guest.ES.u16Attr));
2778	Log4(("guest.ES.u32Limit %#RX32\n", pVmcb->guest.ES.u32Limit));
2779	Log4(("guest.ES.u64Base %#RX64\n", pVmcb->guest.ES.u64Base));
2780	Log4(("guest.FS.u16Sel %RTsel\n", pVmcb->guest.FS.u16Sel));
2781	Log4(("guest.FS.u16Attr %#x\n", pVmcb->guest.FS.u16Attr));
2782	Log4(("guest.FS.u32Limit %#RX32\n", pVmcb->guest.FS.u32Limit));
2783	Log4(("guest.FS.u64Base %#RX64\n", pVmcb->guest.FS.u64Base));
2784	Log4(("guest.GS.u16Sel %RTsel\n", pVmcb->guest.GS.u16Sel));
2785	Log4(("guest.GS.u16Attr %#x\n", pVmcb->guest.GS.u16Attr));
2786	Log4(("guest.GS.u32Limit %#RX32\n", pVmcb->guest.GS.u32Limit));
2787	Log4(("guest.GS.u64Base %#RX64\n", pVmcb->guest.GS.u64Base));
2788
2789	Log4(("guest.GDTR.u32Limit %#RX32\n", pVmcb->guest.GDTR.u32Limit));
2790	Log4(("guest.GDTR.u64Base %#RX64\n", pVmcb->guest.GDTR.u64Base));
2791
2792	Log4(("guest.LDTR.u16Sel %RTsel\n", pVmcb->guest.LDTR.u16Sel));
2793	Log4(("guest.LDTR.u16Attr %#x\n", pVmcb->guest.LDTR.u16Attr));
2794	Log4(("guest.LDTR.u32Limit %#RX32\n", pVmcb->guest.LDTR.u32Limit));
2795	Log4(("guest.LDTR.u64Base %#RX64\n", pVmcb->guest.LDTR.u64Base));
2796
2797	Log4(("guest.IDTR.u32Limit %#RX32\n", pVmcb->guest.IDTR.u32Limit));
2798	Log4(("guest.IDTR.u64Base %#RX64\n", pVmcb->guest.IDTR.u64Base));
2799
2800	Log4(("guest.TR.u16Sel %RTsel\n", pVmcb->guest.TR.u16Sel));
2801	Log4(("guest.TR.u16Attr %#x\n", pVmcb->guest.TR.u16Attr));
2802	Log4(("guest.TR.u32Limit %#RX32\n", pVmcb->guest.TR.u32Limit));
2803	Log4(("guest.TR.u64Base %#RX64\n", pVmcb->guest.TR.u64Base));
2804
2805	Log4(("guest.u8CPL %#x\n", pVmcb->guest.u8CPL));
2806	Log4(("guest.u64CR0 %#RX64\n", pVmcb->guest.u64CR0));
2807	Log4(("guest.u64CR2 %#RX64\n", pVmcb->guest.u64CR2));
2808	Log4(("guest.u64CR3 %#RX64\n", pVmcb->guest.u64CR3));
2809	Log4(("guest.u64CR4 %#RX64\n", pVmcb->guest.u64CR4));
2810	Log4(("guest.u64DR6 %#RX64\n", pVmcb->guest.u64DR6));
2811	Log4(("guest.u64DR7 %#RX64\n", pVmcb->guest.u64DR7));
2812
2813	Log4(("guest.u64RIP %#RX64\n", pVmcb->guest.u64RIP));
2814	Log4(("guest.u64RSP %#RX64\n", pVmcb->guest.u64RSP));
2815	Log4(("guest.u64RAX %#RX64\n", pVmcb->guest.u64RAX));
2816	Log4(("guest.u64RFlags %#RX64\n", pVmcb->guest.u64RFlags));
2817
2818	Log4(("guest.u64SysEnterCS %#RX64\n", pVmcb->guest.u64SysEnterCS));
2819	Log4(("guest.u64SysEnterEIP %#RX64\n", pVmcb->guest.u64SysEnterEIP));
2820	Log4(("guest.u64SysEnterESP %#RX64\n", pVmcb->guest.u64SysEnterESP));
2821
2822	Log4(("guest.u64EFER %#RX64\n", pVmcb->guest.u64EFER));
2823	Log4(("guest.u64STAR %#RX64\n", pVmcb->guest.u64STAR));
2824	Log4(("guest.u64LSTAR %#RX64\n", pVmcb->guest.u64LSTAR));
2825	Log4(("guest.u64CSTAR %#RX64\n", pVmcb->guest.u64CSTAR));
2826	Log4(("guest.u64SFMASK %#RX64\n", pVmcb->guest.u64SFMASK));
2827	Log4(("guest.u64KernelGSBase %#RX64\n", pVmcb->guest.u64KernelGSBase));
2828	Log4(("guest.u64GPAT %#RX64\n", pVmcb->guest.u64GPAT));
2829	Log4(("guest.u64DBGCTL %#RX64\n", pVmcb->guest.u64DBGCTL));
2830	Log4(("guest.u64BR_FROM %#RX64\n", pVmcb->guest.u64BR_FROM));
2831	Log4(("guest.u64BR_TO %#RX64\n", pVmcb->guest.u64BR_TO));
2832	Log4(("guest.u64LASTEXCPFROM %#RX64\n", pVmcb->guest.u64LASTEXCPFROM));
2833	Log4(("guest.u64LASTEXCPTO %#RX64\n", pVmcb->guest.u64LASTEXCPTO));
2834	#else
2835	NOREF(pVmcb);
2836	#endif /* VBOX_STRICT */
2837	}
2838	else
2839	Log4(("hmR0SvmReportWorldSwitchError: rcVMRun=%d\n", rcVMRun));
2840	}
2841
2842
2843	/**
2844	* Check per-VM and per-VCPU force flag actions that require us to go back to
2845	* ring-3 for one reason or another.
2846	*
2847	* @returns VBox status code (information status code included).
2848	* @retval VINF_SUCCESS if we don't have any actions that require going back to
2849	* ring-3.
2850	* @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
2851	* @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
2852	* interrupts)
2853	* @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
2854	* all EMTs to be in ring-3.
2855	* @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
2856	* @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
2857	* to the EM loop.
2858	*
2859	* @param pVM Pointer to the VM.
2860	* @param pVCpu Pointer to the VMCPU.
2861	* @param pCtx Pointer to the guest-CPU context.
2862	*/
2863	static int hmR0SvmCheckForceFlags(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2864	{
2865	Assert(VMMRZCallRing3IsEnabled(pVCpu));
2866
2867	/* On AMD-V we don't need to update CR3, PAE PDPES lazily. See hmR0SvmSaveGuestState(). */
2868	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
2869	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
2870
2871	if ( VM_FF_IS_PENDING(pVM, !pVCpu->hm.s.fSingleInstruction
2872	? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
2873	\|\| VMCPU_FF_IS_PENDING(pVCpu, !pVCpu->hm.s.fSingleInstruction
2874	? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
2875	{
2876	/* Pending PGM C3 sync. */
2877	if (VMCPU_FF_IS_PENDING(pVCpu,VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
2878	{
2879	int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
2880	if (rc != VINF_SUCCESS)
2881	{
2882	Log4(("hmR0SvmCheckForceFlags: PGMSyncCR3 forcing us back to ring-3. rc=%d\n", rc));
2883	return rc;
2884	}
2885	}
2886
2887	/* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
2888	/* -XXX- what was that about single stepping? */
2889	if ( VM_FF_IS_PENDING(pVM, VM_FF_HM_TO_R3_MASK)
2890	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
2891	{
2892	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
2893	int rc = RT_UNLIKELY(VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
2894	Log4(("hmR0SvmCheckForceFlags: HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
2895	return rc;
2896	}
2897
2898	/* Pending VM request packets, such as hardware interrupts. */
2899	if ( VM_FF_IS_PENDING(pVM, VM_FF_REQUEST)
2900	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_REQUEST))
2901	{
2902	Log4(("hmR0SvmCheckForceFlags: Pending VM request forcing us back to ring-3\n"));
2903	return VINF_EM_PENDING_REQUEST;
2904	}
2905
2906	/* Pending PGM pool flushes. */
2907	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
2908	{
2909	Log4(("hmR0SvmCheckForceFlags: PGM pool flush pending forcing us back to ring-3\n"));
2910	return VINF_PGM_POOL_FLUSH_PENDING;
2911	}
2912
2913	/* Pending DMA requests. */
2914	if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
2915	{
2916	Log4(("hmR0SvmCheckForceFlags: Pending DMA request forcing us back to ring-3\n"));
2917	return VINF_EM_RAW_TO_R3;
2918	}
2919	}
2920
2921	return VINF_SUCCESS;
2922	}
2923
2924
2925	/**
2926	* Does the preparations before executing guest code in AMD-V.
2927	*
2928	* This may cause longjmps to ring-3 and may even result in rescheduling to the
2929	* recompiler. We must be cautious what we do here regarding committing
2930	* guest-state information into the the VMCB assuming we assuredly execute the
2931	* guest in AMD-V. If we fall back to the recompiler after updating the VMCB and
2932	* clearing the common-state (TRPM/forceflags), we must undo those changes so
2933	* that the recompiler can (and should) use them when it resumes guest
2934	* execution. Otherwise such operations must be done when we can no longer
2935	* exit to ring-3.
2936	*
2937	* @returns VBox status code (informational status codes included).
2938	* @retval VINF_SUCCESS if we can proceed with running the guest.
2939	* @retval VINF_* scheduling changes, we have to go back to ring-3.
2940	*
2941	* @param pVM Pointer to the VM.
2942	* @param pVCpu Pointer to the VMCPU.
2943	* @param pCtx Pointer to the guest-CPU context.
2944	* @param pSvmTransient Pointer to the SVM transient structure.
2945	*/
2946	static int hmR0SvmPreRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
2947	{
2948	HMSVM_ASSERT_PREEMPT_SAFE();
2949
2950	/* Check force flag actions that might require us to go back to ring-3. */
2951	int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
2952	if (rc != VINF_SUCCESS)
2953	return rc;
2954
2955	if (TRPMHasTrap(pVCpu))
2956	hmR0SvmTrpmTrapToPendingEvent(pVCpu);
2957	else if (!pVCpu->hm.s.Event.fPending)
2958	hmR0SvmEvaluatePendingEvent(pVCpu, pCtx);
2959
2960	#ifdef HMSVM_SYNC_FULL_GUEST_STATE
2961	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
2962	#endif
2963
2964	/* Load the guest bits that are not shared with the host in any way since we can longjmp or get preempted. */
2965	rc = hmR0SvmLoadGuestState(pVM, pVCpu, pCtx);
2966	AssertRCReturn(rc, rc);
2967	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull);
2968
2969	/*
2970	* If we're not intercepting TPR changes in the guest, save the guest TPR before the world-switch
2971	* so we can update it on the way back if the guest changed the TPR.
2972	*/
2973	if (pVCpu->hm.s.svm.fSyncVTpr)
2974	{
2975	if (pVM->hm.s.fTPRPatchingActive)
2976	pSvmTransient->u8GuestTpr = pCtx->msrLSTAR;
2977	else
2978	{
2979	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2980	pSvmTransient->u8GuestTpr = pVmcb->ctrl.IntCtrl.n.u8VTPR;
2981	}
2982	}
2983
2984	/*
2985	* No longjmps to ring-3 from this point on!!!
2986	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
2987	* This also disables flushing of the R0-logger instance (if any).
2988	*/
2989	VMMRZCallRing3Disable(pVCpu);
2990
2991	/*
2992	* We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
2993	* when thread-context hooks aren't used and we've been running with preemption disabled for a while.
2994	*
2995	* We need to check for force-flags that could've possible been altered since we last checked them (e.g.
2996	* by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
2997	*
2998	* We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
2999	* executing guest code.
3000	*/
3001	pSvmTransient->uEflags = ASMIntDisableFlags();
3002	if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
3003	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
3004	{
3005	ASMSetFlags(pSvmTransient->uEflags);
3006	VMMRZCallRing3Enable(pVCpu);
3007	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
3008	return VINF_EM_RAW_TO_R3;
3009	}
3010	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
3011	{
3012	ASMSetFlags(pSvmTransient->uEflags);
3013	VMMRZCallRing3Enable(pVCpu);
3014	STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
3015	return VINF_EM_RAW_INTERRUPT;
3016	}
3017
3018	/*
3019	* If we are injecting an NMI, we must set VMCPU_FF_BLOCK_NMIS only when we are going to execute
3020	* guest code for certain (no exits to ring-3). Otherwise, we could re-read the flag on re-entry into
3021	* AMD-V and conclude that NMI inhibition is active when we have not even delivered the NMI.
3022	*
3023	* With VT-x, this is handled by the Guest interruptibility information VMCS field which will set the
3024	* VMCS field after actually delivering the NMI which we read on VM-exit to determine the state.
3025	*/
3026	if (pVCpu->hm.s.Event.fPending)
3027	{
3028	SVMEVENT Event;
3029	Event.u = pVCpu->hm.s.Event.u64IntInfo;
3030	if ( Event.n.u1Valid
3031	&& Event.n.u3Type == SVM_EVENT_NMI
3032	&& Event.n.u8Vector == X86_XCPT_NMI
3033	&& !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
3034	{
3035	VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
3036	}
3037	}
3038
3039	return VINF_SUCCESS;
3040	}
3041
3042
3043	/**
3044	* Prepares to run guest code in AMD-V and we've committed to doing so. This
3045	* means there is no backing out to ring-3 or anywhere else at this
3046	* point.
3047	*
3048	* @param pVM Pointer to the VM.
3049	* @param pVCpu Pointer to the VMCPU.
3050	* @param pCtx Pointer to the guest-CPU context.
3051	* @param pSvmTransient Pointer to the SVM transient structure.
3052	*
3053	* @remarks Called with preemption disabled.
3054	* @remarks No-long-jump zone!!!
3055	*/
3056	static void hmR0SvmPreRunGuestCommitted(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
3057	{
3058	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3059	Assert(VMMR0IsLogFlushDisabled(pVCpu));
3060	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
3061
3062	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
3063	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
3064
3065	hmR0SvmInjectPendingEvent(pVCpu, pCtx);
3066
3067	if ( pVCpu->hm.s.fUseGuestFpu
3068	&& !CPUMIsGuestFPUStateActive(pVCpu))
3069	{
3070	CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
3071	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
3072	}
3073
3074	/* Load the state shared between host and guest (FPU, debug). */
3075	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3076	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE))
3077	hmR0SvmLoadSharedState(pVCpu, pVmcb, pCtx);
3078	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT); /* Preemption might set this, nothing to do on AMD-V. */
3079	AssertMsg(!HMCPU_CF_VALUE(pVCpu), ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
3080
3081	/* Setup TSC offsetting. */
3082	RTCPUID idCurrentCpu = HMR0GetCurrentCpu()->idCpu;
3083	if ( pSvmTransient->fUpdateTscOffsetting
3084	\|\| idCurrentCpu != pVCpu->hm.s.idLastCpu)
3085	{
3086	hmR0SvmUpdateTscOffsetting(pVCpu);
3087	pSvmTransient->fUpdateTscOffsetting = false;
3088	}
3089
3090	/* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
3091	if (idCurrentCpu != pVCpu->hm.s.idLastCpu)
3092	pVmcb->ctrl.u64VmcbCleanBits = 0;
3093
3094	/* Store status of the shared guest-host state at the time of VMRUN. */
3095	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
3096	if (CPUMIsGuestInLongModeEx(pCtx))
3097	{
3098	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
3099	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
3100	}
3101	else
3102	#endif
3103	{
3104	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
3105	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
3106	}
3107	pSvmTransient->fWasGuestFPUStateActive = CPUMIsGuestFPUStateActive(pVCpu);
3108
3109	/* Flush the appropriate tagged-TLB entries. */
3110	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB-shootdowns, set this across the world switch. */
3111	hmR0SvmFlushTaggedTlb(pVCpu);
3112	Assert(HMR0GetCurrentCpu()->idCpu == pVCpu->hm.s.idLastCpu);
3113
3114	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
3115
3116	TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
3117	to start executing. */
3118
3119	/*
3120	* Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that
3121	* RDTSCPs (that don't cause exits) reads the guest MSR. See @bugref{3324}.
3122	*
3123	* This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
3124	*/
3125	if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
3126	&& !(pVmcb->ctrl.u32InterceptCtrl2 & SVM_CTRL2_INTERCEPT_RDTSCP))
3127	{
3128	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
3129	pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
3130	uint64_t u64GuestTscAux = CPUMR0GetGuestTscAux(pVCpu);
3131	if (u64GuestTscAux != pVCpu->hm.s.u64HostTscAux)
3132	ASMWrMsr(MSR_K8_TSC_AUX, u64GuestTscAux);
3133	pSvmTransient->fRestoreTscAuxMsr = true;
3134	}
3135	else
3136	{
3137	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
3138	pSvmTransient->fRestoreTscAuxMsr = false;
3139	}
3140
3141	/* If VMCB Clean bits isn't supported by the CPU, simply mark all state-bits as dirty, indicating (re)load-from-VMCB. */
3142	if (!(pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN))
3143	pVmcb->ctrl.u64VmcbCleanBits = 0;
3144	}
3145
3146
3147	/**
3148	* Wrapper for running the guest code in AMD-V.
3149	*
3150	* @returns VBox strict status code.
3151	* @param pVM Pointer to the VM.
3152	* @param pVCpu Pointer to the VMCPU.
3153	* @param pCtx Pointer to the guest-CPU context.
3154	*
3155	* @remarks No-long-jump zone!!!
3156	*/
3157	DECLINLINE(int) hmR0SvmRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3158	{
3159	/*
3160	* 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
3161	* using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
3162	* Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
3163	*/
3164	#ifdef VBOX_WITH_KERNEL_USING_XMM
3165	return HMR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
3166	pVCpu->hm.s.svm.pfnVMRun);
3167	#else
3168	return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
3169	#endif
3170	}
3171
3172
3173	/**
3174	* Performs some essential restoration of state after running guest code in
3175	* AMD-V.
3176	*
3177	* @param pVM Pointer to the VM.
3178	* @param pVCpu Pointer to the VMCPU.
3179	* @param pMixedCtx Pointer to the guest-CPU context. The data maybe
3180	* out-of-sync. Make sure to update the required fields
3181	* before using them.
3182	* @param pSvmTransient Pointer to the SVM transient structure.
3183	* @param rcVMRun Return code of VMRUN.
3184	*
3185	* @remarks Called with interrupts disabled.
3186	* @remarks No-long-jump zone!!! This function will however re-enable longjmps
3187	* unconditionally when it is safe to do so.
3188	*/
3189	static void hmR0SvmPostRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient, int rcVMRun)
3190	{
3191	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3192
3193	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB-shootdowns. */
3194	ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for TLB-shootdowns. */
3195
3196	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3197	pVmcb->ctrl.u64VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL; /* Mark the VMCB-state cache as unmodified by VMM. */
3198
3199	if (pSvmTransient->fRestoreTscAuxMsr)
3200	{
3201	uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
3202	CPUMR0SetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
3203	if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
3204	ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
3205	}
3206
3207	if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_RDTSC))
3208	{
3209	/** @todo Find a way to fix hardcoding a guestimate. */
3210	TMCpuTickSetLastSeen(pVCpu, ASMReadTSC() + pVmcb->ctrl.u64TSCOffset - 0x400);
3211	}
3212
3213	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatExit1, x);
3214	TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
3215	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
3216
3217	Assert(!(ASMGetFlags() & X86_EFL_IF));
3218	ASMSetFlags(pSvmTransient->uEflags); /* Enable interrupts. */
3219	VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
3220
3221	/* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
3222	if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
3223	{
3224	Log4(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
3225	return;
3226	}
3227
3228	pSvmTransient->u64ExitCode = pVmcb->ctrl.u64ExitCode; /* Save the #VMEXIT reason. */
3229	HMCPU_EXIT_HISTORY_ADD(pVCpu, pVmcb->ctrl.u64ExitCode); /* Update the #VMEXIT history array. */
3230	pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
3231	pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
3232
3233	hmR0SvmSaveGuestState(pVCpu, pMixedCtx); /* Save the guest state from the VMCB to the guest-CPU context. */
3234
3235	if (RT_LIKELY(pSvmTransient->u64ExitCode != (uint64_t)SVM_EXIT_INVALID))
3236	{
3237	if (pVCpu->hm.s.svm.fSyncVTpr)
3238	{
3239	/* TPR patching (for 32-bit guests) uses LSTAR MSR for holding the TPR value, otherwise uses the VTPR. */
3240	if ( pVM->hm.s.fTPRPatchingActive
3241	&& (pMixedCtx->msrLSTAR & 0xff) != pSvmTransient->u8GuestTpr)
3242	{
3243	int rc = PDMApicSetTPR(pVCpu, pMixedCtx->msrLSTAR & 0xff);
3244	AssertRC(rc);
3245	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
3246	}
3247	else if (pSvmTransient->u8GuestTpr != pVmcb->ctrl.IntCtrl.n.u8VTPR)
3248	{
3249	int rc = PDMApicSetTPR(pVCpu, pVmcb->ctrl.IntCtrl.n.u8VTPR << 4);
3250	AssertRC(rc);
3251	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
3252	}
3253	}
3254	}
3255	}
3256
3257
3258	/**
3259	* Runs the guest code using AMD-V.
3260	*
3261	* @returns VBox status code.
3262	* @param pVM Pointer to the VM.
3263	* @param pVCpu Pointer to the VMCPU.
3264	*/
3265	static int hmR0SvmRunGuestCodeNormal(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3266	{
3267	SVMTRANSIENT SvmTransient;
3268	SvmTransient.fUpdateTscOffsetting = true;
3269	uint32_t cLoops = 0;
3270	int rc = VERR_INTERNAL_ERROR_5;
3271
3272	for (;; cLoops++)
3273	{
3274	Assert(!HMR0SuspendPending());
3275	HMSVM_ASSERT_CPU_SAFE();
3276
3277	/* Preparatory work for running guest code, this may force us to return
3278	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
3279	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
3280	rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
3281	if (rc != VINF_SUCCESS)
3282	break;
3283
3284	/*
3285	* No longjmps to ring-3 from this point on!!!
3286	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
3287	* This also disables flushing of the R0-logger instance (if any).
3288	*/
3289	hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
3290	rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
3291
3292	/* Restore any residual host-state and save any bits shared between host
3293	and guest into the guest-CPU state. Re-enables interrupts! */
3294	hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
3295
3296	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
3297	\|\| SvmTransient.u64ExitCode == (uint64_t)SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
3298	{
3299	if (rc == VINF_SUCCESS)
3300	rc = VERR_SVM_INVALID_GUEST_STATE;
3301	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
3302	hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
3303	break;
3304	}
3305
3306	/* Handle the #VMEXIT. */
3307	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
3308	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
3309	rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
3310	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
3311	if (rc != VINF_SUCCESS)
3312	break;
3313	else if (cLoops > pVM->hm.s.cMaxResumeLoops)
3314	{
3315	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMaxResume);
3316	rc = VINF_EM_RAW_INTERRUPT;
3317	break;
3318	}
3319	}
3320
3321	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
3322	return rc;
3323	}
3324
3325
3326	/**
3327	* Runs the guest code using AMD-V in single step mode.
3328	*
3329	* @returns VBox status code.
3330	* @param pVM Pointer to the VM.
3331	* @param pVCpu Pointer to the VMCPU.
3332	* @param pCtx Pointer to the guest-CPU context.
3333	*/
3334	static int hmR0SvmRunGuestCodeStep(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3335	{
3336	SVMTRANSIENT SvmTransient;
3337	SvmTransient.fUpdateTscOffsetting = true;
3338	uint32_t cLoops = 0;
3339	int rc = VERR_INTERNAL_ERROR_5;
3340	uint16_t uCsStart = pCtx->cs.Sel;
3341	uint64_t uRipStart = pCtx->rip;
3342
3343	for (;; cLoops++)
3344	{
3345	Assert(!HMR0SuspendPending());
3346	AssertMsg(pVCpu->hm.s.idEnteredCpu == RTMpCpuId(),
3347	("Illegal migration! Entered on CPU %u Current %u cLoops=%u\n", (unsigned)pVCpu->hm.s.idEnteredCpu,
3348	(unsigned)RTMpCpuId(), cLoops));
3349
3350	/* Preparatory work for running guest code, this may force us to return
3351	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
3352	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
3353	rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
3354	if (rc != VINF_SUCCESS)
3355	break;
3356
3357	/*
3358	* No longjmps to ring-3 from this point on!!!
3359	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
3360	* This also disables flushing of the R0-logger instance (if any).
3361	*/
3362	VMMRZCallRing3Disable(pVCpu);
3363	VMMRZCallRing3RemoveNotification(pVCpu);
3364	hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
3365
3366	rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
3367
3368	/*
3369	* Restore any residual host-state and save any bits shared between host and guest into the guest-CPU state.
3370	* This will also re-enable longjmps to ring-3 when it has reached a safe point!!!
3371	*/
3372	hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
3373	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
3374	\|\| SvmTransient.u64ExitCode == (uint64_t)SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
3375	{
3376	if (rc == VINF_SUCCESS)
3377	rc = VERR_SVM_INVALID_GUEST_STATE;
3378	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
3379	hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
3380	return rc;
3381	}
3382
3383	/* Handle the #VMEXIT. */
3384	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
3385	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
3386	rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
3387	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
3388	if (rc != VINF_SUCCESS)
3389	break;
3390	else if (cLoops > pVM->hm.s.cMaxResumeLoops)
3391	{
3392	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMaxResume);
3393	rc = VINF_EM_RAW_INTERRUPT;
3394	break;
3395	}
3396
3397	/*
3398	* Did the RIP change, if so, consider it a single step.
3399	* Otherwise, make sure one of the TFs gets set.
3400	*/
3401	if ( pCtx->rip != uRipStart
3402	\|\| pCtx->cs.Sel != uCsStart)
3403	{
3404	rc = VINF_EM_DBG_STEPPED;
3405	break;
3406	}
3407	pVCpu->hm.s.fContextUseFlags \|= HM_CHANGED_GUEST_DEBUG;
3408	}
3409
3410	/*
3411	* Clear the X86_EFL_TF if necessary.
3412	*/
3413	if (pVCpu->hm.s.fClearTrapFlag)
3414	{
3415	pVCpu->hm.s.fClearTrapFlag = false;
3416	pCtx->eflags.Bits.u1TF = 0;
3417	}
3418
3419	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
3420	return rc;
3421	}
3422
3423
3424	/**
3425	* Runs the guest code using AMD-V.
3426	*
3427	* @returns VBox status code.
3428	* @param pVM Pointer to the VM.
3429	* @param pVCpu Pointer to the VMCPU.
3430	* @param pCtx Pointer to the guest-CPU context.
3431	*/
3432	VMMR0DECL(int) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3433	{
3434	Assert(VMMRZCallRing3IsEnabled(pVCpu));
3435	HMSVM_ASSERT_PREEMPT_SAFE();
3436	VMMRZCallRing3SetNotification(pVCpu, hmR0SvmCallRing3Callback, pCtx);
3437
3438	int rc;
3439	if (!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu))
3440	rc = hmR0SvmRunGuestCodeNormal(pVM, pVCpu, pCtx);
3441	else
3442	rc = hmR0SvmRunGuestCodeStep(pVM, pVCpu, pCtx);
3443
3444	if (rc == VERR_EM_INTERPRETER)
3445	rc = VINF_EM_RAW_EMULATE_INSTR;
3446	else if (rc == VINF_EM_RESET)
3447	rc = VINF_EM_TRIPLE_FAULT;
3448
3449	/* Prepare to return to ring-3. This will remove longjmp notifications. */
3450	hmR0SvmExitToRing3(pVM, pVCpu, pCtx, rc);
3451	Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
3452	return rc;
3453	}
3454
3455
3456	/**
3457	* Handles a #VMEXIT (for all EXITCODE values except SVM_EXIT_INVALID).
3458	*
3459	* @returns VBox status code (informational status codes included).
3460	* @param pVCpu Pointer to the VMCPU.
3461	* @param pCtx Pointer to the guest-CPU context.
3462	* @param pSvmTransient Pointer to the SVM transient structure.
3463	*/
3464	DECLINLINE(int) hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
3465	{
3466	Assert(pSvmTransient->u64ExitCode != (uint64_t)SVM_EXIT_INVALID);
3467	Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
3468
3469	/*
3470	* The ordering of the case labels is based on most-frequently-occurring #VMEXITs for most guests under
3471	* normal workloads (for some definition of "normal").
3472	*/
3473	uint32_t u32ExitCode = pSvmTransient->u64ExitCode;
3474	switch (pSvmTransient->u64ExitCode)
3475	{
3476	case SVM_EXIT_NPF:
3477	return hmR0SvmExitNestedPF(pVCpu, pCtx, pSvmTransient);
3478
3479	case SVM_EXIT_IOIO:
3480	return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
3481
3482	case SVM_EXIT_RDTSC:
3483	return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
3484
3485	case SVM_EXIT_RDTSCP:
3486	return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
3487
3488	case SVM_EXIT_CPUID:
3489	return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
3490
3491	case SVM_EXIT_EXCEPTION_E: /* X86_XCPT_PF */
3492	return hmR0SvmExitXcptPF(pVCpu, pCtx, pSvmTransient);
3493
3494	case SVM_EXIT_EXCEPTION_7: /* X86_XCPT_NM */
3495	return hmR0SvmExitXcptNM(pVCpu, pCtx, pSvmTransient);
3496
3497	case SVM_EXIT_EXCEPTION_10: /* X86_XCPT_MF */
3498	return hmR0SvmExitXcptMF(pVCpu, pCtx, pSvmTransient);
3499
3500	case SVM_EXIT_EXCEPTION_1: /* X86_XCPT_DB */
3501	return hmR0SvmExitXcptDB(pVCpu, pCtx, pSvmTransient);
3502
3503	case SVM_EXIT_MONITOR:
3504	return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
3505
3506	case SVM_EXIT_MWAIT:
3507	return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
3508
3509	case SVM_EXIT_HLT:
3510	return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
3511
3512	case SVM_EXIT_READ_CR0:
3513	case SVM_EXIT_READ_CR3:
3514	case SVM_EXIT_READ_CR4:
3515	return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
3516
3517	case SVM_EXIT_WRITE_CR0:
3518	case SVM_EXIT_WRITE_CR3:
3519	case SVM_EXIT_WRITE_CR4:
3520	case SVM_EXIT_WRITE_CR8:
3521	return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
3522
3523	case SVM_EXIT_VINTR:
3524	return hmR0SvmExitVIntr(pVCpu, pCtx, pSvmTransient);
3525
3526	case SVM_EXIT_INTR:
3527	case SVM_EXIT_FERR_FREEZE:
3528	case SVM_EXIT_NMI:
3529	return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
3530
3531	case SVM_EXIT_MSR:
3532	return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
3533
3534	case SVM_EXIT_INVLPG:
3535	return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
3536
3537	case SVM_EXIT_WBINVD:
3538	return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
3539
3540	case SVM_EXIT_INVD:
3541	return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
3542
3543	case SVM_EXIT_RDPMC:
3544	return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
3545
3546	default:
3547	{
3548	switch (pSvmTransient->u64ExitCode)
3549	{
3550	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
3551	case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
3552	case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
3553	case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
3554	return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
3555
3556	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
3557	case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
3558	case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
3559	case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
3560	return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
3561
3562	case SVM_EXIT_TASK_SWITCH:
3563	return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
3564
3565	case SVM_EXIT_VMMCALL:
3566	return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
3567
3568	case SVM_EXIT_IRET:
3569	return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
3570
3571	case SVM_EXIT_SHUTDOWN:
3572	return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
3573
3574	case SVM_EXIT_SMI:
3575	case SVM_EXIT_INIT:
3576	{
3577	/*
3578	* We don't intercept NMIs. As for INIT signals, it really shouldn't ever happen here. If it ever does,
3579	* we want to know about it so log the exit code and bail.
3580	*/
3581	AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
3582	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
3583	return VERR_SVM_UNEXPECTED_EXIT;
3584	}
3585
3586	case SVM_EXIT_INVLPGA:
3587	case SVM_EXIT_RSM:
3588	case SVM_EXIT_VMRUN:
3589	case SVM_EXIT_VMLOAD:
3590	case SVM_EXIT_VMSAVE:
3591	case SVM_EXIT_STGI:
3592	case SVM_EXIT_CLGI:
3593	case SVM_EXIT_SKINIT:
3594	return hmR0SvmExitSetPendingXcptUD(pVCpu, pCtx, pSvmTransient);
3595
3596	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
3597	case SVM_EXIT_EXCEPTION_0: /* X86_XCPT_DE */
3598	/* SVM_EXIT_EXCEPTION_1: / / X86_XCPT_DB - Handled above. */
3599	case SVM_EXIT_EXCEPTION_2: /* X86_XCPT_NMI */
3600	case SVM_EXIT_EXCEPTION_3: /* X86_XCPT_BP */
3601	case SVM_EXIT_EXCEPTION_4: /* X86_XCPT_OF */
3602	case SVM_EXIT_EXCEPTION_5: /* X86_XCPT_BR */
3603	case SVM_EXIT_EXCEPTION_6: /* X86_XCPT_UD */
3604	/* SVM_EXIT_EXCEPTION_7: / / X86_XCPT_NM - Handled above. */
3605	case SVM_EXIT_EXCEPTION_8: /* X86_XCPT_DF */
3606	case SVM_EXIT_EXCEPTION_9: /* X86_XCPT_CO_SEG_OVERRUN */
3607	case SVM_EXIT_EXCEPTION_A: /* X86_XCPT_TS */
3608	case SVM_EXIT_EXCEPTION_B: /* X86_XCPT_NP */
3609	case SVM_EXIT_EXCEPTION_C: /* X86_XCPT_SS */
3610	case SVM_EXIT_EXCEPTION_D: /* X86_XCPT_GP */
3611	/* SVM_EXIT_EXCEPTION_E: / / X86_XCPT_PF - Handled above. */
3612	/* SVM_EXIT_EXCEPTION_10: / / X86_XCPT_MF - Handled above. */
3613	case SVM_EXIT_EXCEPTION_11: /* X86_XCPT_AC */
3614	case SVM_EXIT_EXCEPTION_12: /* X86_XCPT_MC */
3615	case SVM_EXIT_EXCEPTION_13: /* X86_XCPT_XF */
3616	case SVM_EXIT_EXCEPTION_F: /* Reserved */
3617	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16:
3618	case SVM_EXIT_EXCEPTION_17: case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19:
3619	case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B: case SVM_EXIT_EXCEPTION_1C:
3620	case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
3621	{
3622	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3623	SVMEVENT Event;
3624	Event.u = 0;
3625	Event.n.u1Valid = 1;
3626	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3627	Event.n.u8Vector = pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0;
3628
3629	switch (Event.n.u8Vector)
3630	{
3631	case X86_XCPT_DE:
3632	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDE);
3633	break;
3634
3635	case X86_XCPT_BP:
3636	/** Saves the wrong EIP on the stack (pointing to the int3) instead of the
3637	* next instruction. */
3638	/** @todo Investigate this later. */
3639	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestBP);
3640	break;
3641
3642	case X86_XCPT_UD:
3643	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD);
3644	break;
3645
3646	case X86_XCPT_NP:
3647	Event.n.u1ErrorCodeValid = 1;
3648	Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
3649	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNP);
3650	break;
3651
3652	case X86_XCPT_SS:
3653	Event.n.u1ErrorCodeValid = 1;
3654	Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
3655	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestSS);
3656	break;
3657
3658	case X86_XCPT_GP:
3659	Event.n.u1ErrorCodeValid = 1;
3660	Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
3661	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestGP);
3662	break;
3663
3664	default:
3665	AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit caused by exception %#x\n", Event.n.u8Vector));
3666	pVCpu->hm.s.u32HMError = Event.n.u8Vector;
3667	return VERR_SVM_UNEXPECTED_XCPT_EXIT;
3668	}
3669
3670	Log4(("#Xcpt: Vector=%#x at CS:RIP=%04x:%RGv\n", Event.n.u8Vector, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
3671	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3672	return VINF_SUCCESS;
3673	}
3674	#endif /* HMSVM_ALWAYS_TRAP_ALL_XCPTS */
3675
3676	default:
3677	{
3678	AssertMsgFailed(("hmR0SvmHandleExit: Unknown exit code %#x\n", u32ExitCode));
3679	pVCpu->hm.s.u32HMError = u32ExitCode;
3680	return VERR_SVM_UNKNOWN_EXIT;
3681	}
3682	}
3683	}
3684	}
3685	return VERR_INTERNAL_ERROR_5; /* Should never happen. */
3686	}
3687
3688
3689	#ifdef DEBUG
3690	/* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
3691	# define HMSVM_ASSERT_PREEMPT_CPUID_VAR() \
3692	RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
3693
3694	# define HMSVM_ASSERT_PREEMPT_CPUID() \
3695	do \
3696	{ \
3697	RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
3698	AssertMsg(idAssertCpu == idAssertCpuNow, ("SVM %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
3699	} while (0)
3700
3701	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() \
3702	do { \
3703	AssertPtr(pVCpu); \
3704	AssertPtr(pCtx); \
3705	AssertPtr(pSvmTransient); \
3706	Assert(ASMIntAreEnabled()); \
3707	HMSVM_ASSERT_PREEMPT_SAFE(); \
3708	HMSVM_ASSERT_PREEMPT_CPUID_VAR(); \
3709	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)); \
3710	HMSVM_ASSERT_PREEMPT_SAFE(); \
3711	if (VMMR0IsLogFlushDisabled(pVCpu)) \
3712	HMSVM_ASSERT_PREEMPT_CPUID(); \
3713	} while (0)
3714	#else /* Release builds */
3715	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() do { NOREF(pVCpu); NOREF(pCtx); NOREF(pSvmTransient); } while (0)
3716	#endif
3717
3718
3719	/**
3720	* Worker for hmR0SvmInterpretInvlpg().
3721	*
3722	* @return VBox status code.
3723	* @param pVCpu Pointer to the VMCPU.
3724	* @param pCpu Pointer to the disassembler state.
3725	* @param pRegFrame Pointer to the register frame.
3726	*/
3727	static int hmR0SvmInterpretInvlPgEx(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame)
3728	{
3729	DISQPVPARAMVAL Param1;
3730	RTGCPTR GCPtrPage;
3731
3732	int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->Param1, &Param1, DISQPVWHICH_SRC);
3733	if (RT_FAILURE(rc))
3734	return VERR_EM_INTERPRETER;
3735
3736	if ( Param1.type == DISQPV_TYPE_IMMEDIATE
3737	\|\| Param1.type == DISQPV_TYPE_ADDRESS)
3738	{
3739	if (!(Param1.flags & (DISQPV_FLAG_32 \| DISQPV_FLAG_64)))
3740	return VERR_EM_INTERPRETER;
3741
3742	GCPtrPage = Param1.val.val64;
3743	VBOXSTRICTRC rc2 = EMInterpretInvlpg(pVCpu->CTX_SUFF(pVM), pVCpu, pRegFrame, GCPtrPage);
3744	rc = VBOXSTRICTRC_VAL(rc2);
3745	}
3746	else
3747	{
3748	Log4(("hmR0SvmInterpretInvlPgEx invalid parameter type %#x\n", Param1.type));
3749	rc = VERR_EM_INTERPRETER;
3750	}
3751
3752	return rc;
3753	}
3754
3755
3756	/**
3757	* Interprets INVLPG.
3758	*
3759	* @returns VBox status code.
3760	* @retval VINF_* Scheduling instructions.
3761	* @retval VERR_EM_INTERPRETER Something we can't cope with.
3762	* @retval VERR_* Fatal errors.
3763	*
3764	* @param pVM Pointer to the VM.
3765	* @param pRegFrame Pointer to the register frame.
3766	*
3767	* @remarks Updates the RIP if the instruction was executed successfully.
3768	*/
3769	static int hmR0SvmInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
3770	{
3771	/* Only allow 32 & 64 bit code. */
3772	if (CPUMGetGuestCodeBits(pVCpu) != 16)
3773	{
3774	PDISSTATE pDis = &pVCpu->hm.s.DisState;
3775	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL /* pcbInstr */);
3776	if ( RT_SUCCESS(rc)
3777	&& pDis->pCurInstr->uOpcode == OP_INVLPG)
3778	{
3779	rc = hmR0SvmInterpretInvlPgEx(pVCpu, pDis, pRegFrame);
3780	if (RT_SUCCESS(rc))
3781	pRegFrame->rip += pDis->cbInstr;
3782	return rc;
3783	}
3784	else
3785	Log4(("hmR0SvmInterpretInvlpg: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
3786	}
3787	return VERR_EM_INTERPRETER;
3788	}
3789
3790
3791	/**
3792	* Sets an invalid-opcode (#UD) exception as pending-for-injection into the VM.
3793	*
3794	* @param pVCpu Pointer to the VMCPU.
3795	*/
3796	DECLINLINE(void) hmR0SvmSetPendingXcptUD(PVMCPU pVCpu)
3797	{
3798	SVMEVENT Event;
3799	Event.u = 0;
3800	Event.n.u1Valid = 1;
3801	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3802	Event.n.u8Vector = X86_XCPT_UD;
3803	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3804	}
3805
3806
3807	/**
3808	* Sets a debug (#DB) exception as pending-for-injection into the VM.
3809	*
3810	* @param pVCpu Pointer to the VMCPU.
3811	*/
3812	DECLINLINE(void) hmR0SvmSetPendingXcptDB(PVMCPU pVCpu)
3813	{
3814	SVMEVENT Event;
3815	Event.u = 0;
3816	Event.n.u1Valid = 1;
3817	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3818	Event.n.u8Vector = X86_XCPT_DB;
3819	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3820	}
3821
3822
3823	/**
3824	* Sets a page fault (#PF) exception as pending-for-injection into the VM.
3825	*
3826	* @param pVCpu Pointer to the VMCPU.
3827	* @param pCtx Pointer to the guest-CPU context.
3828	* @param u32ErrCode The error-code for the page-fault.
3829	* @param uFaultAddress The page fault address (CR2).
3830	*
3831	* @remarks This updates the guest CR2 with @a uFaultAddress!
3832	*/
3833	DECLINLINE(void) hmR0SvmSetPendingXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t u32ErrCode, RTGCUINTPTR uFaultAddress)
3834	{
3835	SVMEVENT Event;
3836	Event.u = 0;
3837	Event.n.u1Valid = 1;
3838	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3839	Event.n.u8Vector = X86_XCPT_PF;
3840	Event.n.u1ErrorCodeValid = 1;
3841	Event.n.u32ErrorCode = u32ErrCode;
3842
3843	/* Update CR2 of the guest. */
3844	if (pCtx->cr2 != uFaultAddress)
3845	{
3846	pCtx->cr2 = uFaultAddress;
3847	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR2);
3848	}
3849
3850	hmR0SvmSetPendingEvent(pVCpu, &Event, uFaultAddress);
3851	}
3852
3853
3854	/**
3855	* Sets a device-not-available (#NM) exception as pending-for-injection into the
3856	* VM.
3857	*
3858	* @param pVCpu Pointer to the VMCPU.
3859	*/
3860	DECLINLINE(void) hmR0SvmSetPendingXcptNM(PVMCPU pVCpu)
3861	{
3862	SVMEVENT Event;
3863	Event.u = 0;
3864	Event.n.u1Valid = 1;
3865	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3866	Event.n.u8Vector = X86_XCPT_NM;
3867	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3868	}
3869
3870
3871	/**
3872	* Sets a math-fault (#MF) exception as pending-for-injection into the VM.
3873	*
3874	* @param pVCpu Pointer to the VMCPU.
3875	*/
3876	DECLINLINE(void) hmR0SvmSetPendingXcptMF(PVMCPU pVCpu)
3877	{
3878	SVMEVENT Event;
3879	Event.u = 0;
3880	Event.n.u1Valid = 1;
3881	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3882	Event.n.u8Vector = X86_XCPT_MF;
3883	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3884	}
3885
3886
3887	/**
3888	* Sets a double fault (#DF) exception as pending-for-injection into the VM.
3889	*
3890	* @param pVCpu Pointer to the VMCPU.
3891	*/
3892	DECLINLINE(void) hmR0SvmSetPendingXcptDF(PVMCPU pVCpu)
3893	{
3894	SVMEVENT Event;
3895	Event.u = 0;
3896	Event.n.u1Valid = 1;
3897	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3898	Event.n.u8Vector = X86_XCPT_DF;
3899	Event.n.u1ErrorCodeValid = 1;
3900	Event.n.u32ErrorCode = 0;
3901	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3902	}
3903
3904
3905	/**
3906	* Emulates a simple MOV TPR (CR8) instruction, used for TPR patching on 32-bit
3907	* guests. This simply looks up the patch record at EIP and does the required.
3908	*
3909	* This VMMCALL is used a fallback mechanism when mov to/from cr8 isn't exactly
3910	* like how we want it to be (e.g. not followed by shr 4 as is usually done for
3911	* TPR). See hmR3ReplaceTprInstr() for the details.
3912	*
3913	* @returns VBox status code.
3914	* @retval VINF_SUCCESS if the access was handled successfully.
3915	* @retval VERR_NOT_FOUND if no patch record for this eip could be found.
3916	* @retval VERR_SVM_UNEXPECTED_PATCH_TYPE if the found patch type is invalid.
3917	*
3918	* @param pVM Pointer to the VM.
3919	* @param pVCpu Pointer to the VMCPU.
3920	* @param pCtx Pointer to the guest-CPU context.
3921	*/
3922	static int hmR0SvmEmulateMovTpr(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3923	{
3924	Log4(("Emulated VMMCall TPR access replacement at RIP=%RGv\n", pCtx->rip));
3925
3926	/*
3927	* We do this in a loop as we increment the RIP after a successful emulation
3928	* and the new RIP may be a patched instruction which needs emulation as well.
3929	*/
3930	bool fPatchFound = false;
3931	for (;;)
3932	{
3933	bool fPending;
3934	uint8_t u8Tpr;
3935
3936	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
3937	if (!pPatch)
3938	break;
3939
3940	fPatchFound = true;
3941	switch (pPatch->enmType)
3942	{
3943	case HMTPRINSTR_READ:
3944	{
3945	int rc = PDMApicGetTPR(pVCpu, &u8Tpr, &fPending, NULL /* pu8PendingIrq */);
3946	AssertRC(rc);
3947
3948	rc = DISWriteReg32(CPUMCTX2CORE(pCtx), pPatch->uDstOperand, u8Tpr);
3949	AssertRC(rc);
3950	pCtx->rip += pPatch->cbOp;
3951	break;
3952	}
3953
3954	case HMTPRINSTR_WRITE_REG:
3955	case HMTPRINSTR_WRITE_IMM:
3956	{
3957	if (pPatch->enmType == HMTPRINSTR_WRITE_REG)
3958	{
3959	uint32_t u32Val;
3960	int rc = DISFetchReg32(CPUMCTX2CORE(pCtx), pPatch->uSrcOperand, &u32Val);
3961	AssertRC(rc);
3962	u8Tpr = u32Val;
3963	}
3964	else
3965	u8Tpr = (uint8_t)pPatch->uSrcOperand;
3966
3967	int rc2 = PDMApicSetTPR(pVCpu, u8Tpr);
3968	AssertRC(rc2);
3969	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
3970
3971	pCtx->rip += pPatch->cbOp;
3972	break;
3973	}
3974
3975	default:
3976	AssertMsgFailed(("Unexpected patch type %d\n", pPatch->enmType));
3977	pVCpu->hm.s.u32HMError = pPatch->enmType;
3978	return VERR_SVM_UNEXPECTED_PATCH_TYPE;
3979	}
3980	}
3981
3982	if (fPatchFound)
3983	return VINF_SUCCESS;
3984	return VERR_NOT_FOUND;
3985	}
3986
3987
3988	/**
3989	* Determines if an exception is a contributory exception. Contributory
3990	* exceptions are ones which can cause double-faults. Page-fault is
3991	* intentionally not included here as it's a conditional contributory exception.
3992	*
3993	* @returns true if the exception is contributory, false otherwise.
3994	* @param uVector The exception vector.
3995	*/
3996	DECLINLINE(bool) hmR0SvmIsContributoryXcpt(const uint32_t uVector)
3997	{
3998	switch (uVector)
3999	{
4000	case X86_XCPT_GP:
4001	case X86_XCPT_SS:
4002	case X86_XCPT_NP:
4003	case X86_XCPT_TS:
4004	case X86_XCPT_DE:
4005	return true;
4006	default:
4007	break;
4008	}
4009	return false;
4010	}
4011
4012
4013	/**
4014	* Handle a condition that occurred while delivering an event through the guest
4015	* IDT.
4016	*
4017	* @returns VBox status code (informational error codes included).
4018	* @retval VINF_SUCCESS if we should continue handling the #VMEXIT.
4019	* @retval VINF_HM_DOUBLE_FAULT if a #DF condition was detected and we ought to
4020	* continue execution of the guest which will delivery the #DF.
4021	* @retval VINF_EM_RESET if we detected a triple-fault condition.
4022	*
4023	* @param pVCpu Pointer to the VMCPU.
4024	* @param pCtx Pointer to the guest-CPU context.
4025	* @param pSvmTransient Pointer to the SVM transient structure.
4026	*
4027	* @remarks No-long-jump zone!!!
4028	*/
4029	static int hmR0SvmCheckExitDueToEventDelivery(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4030	{
4031	int rc = VINF_SUCCESS;
4032	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4033
4034	/* See AMD spec. 15.7.3 "EXITINFO Pseudo-Code". The EXITINTINFO (if valid) contains the prior exception (IDT vector)
4035	* that was trying to be delivered to the guest which caused a #VMEXIT which was intercepted (Exit vector). */
4036	if (pVmcb->ctrl.ExitIntInfo.n.u1Valid)
4037	{
4038	uint8_t uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
4039
4040	typedef enum
4041	{
4042	SVMREFLECTXCPT_XCPT, /* Reflect the exception to the guest or for further evaluation by VMM. */
4043	SVMREFLECTXCPT_DF, /* Reflect the exception as a double-fault to the guest. */
4044	SVMREFLECTXCPT_TF, /* Indicate a triple faulted state to the VMM. */
4045	SVMREFLECTXCPT_NONE /* Nothing to reflect. */
4046	} SVMREFLECTXCPT;
4047
4048	SVMREFLECTXCPT enmReflect = SVMREFLECTXCPT_NONE;
4049	bool fReflectingNmi = false;
4050	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION)
4051	{
4052	if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_1F)
4053	{
4054	uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
4055
4056	#ifdef VBOX_STRICT
4057	if ( hmR0SvmIsContributoryXcpt(uIdtVector)
4058	&& uExitVector == X86_XCPT_PF)
4059	{
4060	Log4(("IDT: Contributory #PF uCR2=%#RX64\n", pVCpu->idCpu, pCtx->cr2));
4061	}
4062	#endif
4063	if ( uExitVector == X86_XCPT_PF
4064	&& uIdtVector == X86_XCPT_PF)
4065	{
4066	pSvmTransient->fVectoringDoublePF = true;
4067	Log4(("IDT: Vectoring double #PF uCR2=%#RX64\n", pCtx->cr2));
4068	}
4069	else if ( (pVmcb->ctrl.u32InterceptException & HMSVM_CONTRIBUTORY_XCPT_MASK)
4070	&& hmR0SvmIsContributoryXcpt(uExitVector)
4071	&& ( hmR0SvmIsContributoryXcpt(uIdtVector)
4072	\|\| uIdtVector == X86_XCPT_PF))
4073	{
4074	enmReflect = SVMREFLECTXCPT_DF;
4075	Log4(("IDT: Pending vectoring #DF %#RX64 uIdtVector=%#x uExitVector=%#x\n", pVCpu->hm.s.Event.u64IntInfo,
4076	uIdtVector, uExitVector));
4077	}
4078	else if (uIdtVector == X86_XCPT_DF)
4079	{
4080	enmReflect = SVMREFLECTXCPT_TF;
4081	Log4(("IDT: Pending vectoring triple-fault %#RX64 uIdtVector=%#x uExitVector=%#x\n",
4082	pVCpu->hm.s.Event.u64IntInfo, uIdtVector, uExitVector));
4083	}
4084	else
4085	enmReflect = SVMREFLECTXCPT_XCPT;
4086	}
4087	else
4088	{
4089	/*
4090	* If event delivery caused an #VMEXIT that is not an exception (e.g. #NPF) then reflect the original
4091	* exception to the guest after handling the #VMEXIT.
4092	*/
4093	enmReflect = SVMREFLECTXCPT_XCPT;
4094	}
4095	}
4096	else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXTERNAL_IRQ
4097	\|\| pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
4098	{
4099	enmReflect = SVMREFLECTXCPT_XCPT;
4100	fReflectingNmi = RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI);
4101
4102	if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_1F)
4103	{
4104	uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
4105	if (uExitVector == X86_XCPT_PF)
4106	{
4107	pSvmTransient->fVectoringPF = true;
4108	Log4(("IDT: Vectoring #PF due to Ext-Int/NMI. uCR2=%#RX64\n", pCtx->cr2));
4109	}
4110	}
4111	}
4112	/* else: Ignore software interrupts (INT n) as they reoccur when restarting the instruction. */
4113
4114	switch (enmReflect)
4115	{
4116	case SVMREFLECTXCPT_XCPT:
4117	{
4118	/* If we are re-injecting the NMI, clear NMI blocking. */
4119	if (fReflectingNmi)
4120	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
4121
4122	Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
4123	hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, 0 /* GCPtrFaultAddress */);
4124
4125	/* If uExitVector is #PF, CR2 value will be updated from the VMCB if it's a guest #PF. See hmR0SvmExitXcptPF(). */
4126	Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32\n", pVmcb->ctrl.ExitIntInfo.u,
4127	!!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid, pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
4128	break;
4129	}
4130
4131	case SVMREFLECTXCPT_DF:
4132	{
4133	hmR0SvmSetPendingXcptDF(pVCpu);
4134	rc = VINF_HM_DOUBLE_FAULT;
4135	break;
4136	}
4137
4138	case SVMREFLECTXCPT_TF:
4139	{
4140	rc = VINF_EM_RESET;
4141	break;
4142	}
4143
4144	default:
4145	Assert(rc == VINF_SUCCESS);
4146	break;
4147	}
4148	}
4149	Assert(rc == VINF_SUCCESS \|\| rc == VINF_HM_DOUBLE_FAULT \|\| rc == VINF_EM_RESET);
4150	NOREF(pCtx);
4151	return rc;
4152	}
4153
4154
4155	/**
4156	* Advances the guest RIP in the if the NRIP_SAVE feature is supported by the
4157	* CPU, otherwise advances the RIP by @a cb bytes.
4158	*
4159	* @param pVCpu Pointer to the VMCPU.
4160	* @param pCtx Pointer to the guest-CPU context.
4161	* @param cb RIP increment value in bytes.
4162	*
4163	* @remarks Use this function only from #VMEXIT's where the NRIP value is valid
4164	* when NRIP_SAVE is supported by the CPU!
4165	*/
4166	DECLINLINE(void) hmR0SvmUpdateRip(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
4167	{
4168	if (pVCpu->CTX_SUFF(pVM)->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4169	{
4170	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4171	pCtx->rip = pVmcb->ctrl.u64NextRIP;
4172	}
4173	else
4174	pCtx->rip += cb;
4175	}
4176
4177
4178	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
4179	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #VMEXIT handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
4180	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
4181
4182	/** @name #VMEXIT handlers.
4183	* @{
4184	*/
4185
4186	/**
4187	* #VMEXIT handler for external interrupts, NMIs, FPU assertion freeze and INIT
4188	* signals (SVM_EXIT_INTR, SVM_EXIT_NMI, SVM_EXIT_FERR_FREEZE, SVM_EXIT_INIT).
4189	*/
4190	HMSVM_EXIT_DECL hmR0SvmExitIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4191	{
4192	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4193
4194	if (pSvmTransient->u64ExitCode == SVM_EXIT_NMI)
4195	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
4196	else if (pSvmTransient->u64ExitCode == SVM_EXIT_INTR)
4197	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
4198
4199	/*
4200	* AMD-V has no preemption timer and the generic periodic preemption timer has no way to signal -before- the timer
4201	* fires if the current interrupt is our own timer or a some other host interrupt. We also cannot examine what
4202	* interrupt it is until the host actually take the interrupt.
4203	*
4204	* Going back to executing guest code here unconditionally causes random scheduling problems (observed on an
4205	* AMD Phenom 9850 Quad-Core on Windows 64-bit host).
4206	*/
4207	return VINF_EM_RAW_INTERRUPT;
4208	}
4209
4210
4211	/**
4212	* #VMEXIT handler for WBINVD (SVM_EXIT_WBINVD). Conditional #VMEXIT.
4213	*/
4214	HMSVM_EXIT_DECL hmR0SvmExitWbinvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4215	{
4216	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4217
4218	hmR0SvmUpdateRip(pVCpu, pCtx, 2);
4219	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWbinvd);
4220	int rc = VINF_SUCCESS;
4221	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4222	return rc;
4223	}
4224
4225
4226	/**
4227	* #VMEXIT handler for INVD (SVM_EXIT_INVD). Unconditional #VMEXIT.
4228	*/
4229	HMSVM_EXIT_DECL hmR0SvmExitInvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4230	{
4231	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4232
4233	hmR0SvmUpdateRip(pVCpu, pCtx, 2);
4234	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvd);
4235	int rc = VINF_SUCCESS;
4236	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4237	return rc;
4238	}
4239
4240
4241	/**
4242	* #VMEXIT handler for INVD (SVM_EXIT_CPUID). Conditional #VMEXIT.
4243	*/
4244	HMSVM_EXIT_DECL hmR0SvmExitCpuid(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4245	{
4246	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4247	PVM pVM = pVCpu->CTX_SUFF(pVM);
4248	int rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4249	if (RT_LIKELY(rc == VINF_SUCCESS))
4250	{
4251	hmR0SvmUpdateRip(pVCpu, pCtx, 2);
4252	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4253	}
4254	else
4255	{
4256	AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
4257	rc = VERR_EM_INTERPRETER;
4258	}
4259	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCpuid);
4260	return rc;
4261	}
4262
4263
4264	/**
4265	* #VMEXIT handler for RDTSC (SVM_EXIT_RDTSC). Conditional #VMEXIT.
4266	*/
4267	HMSVM_EXIT_DECL hmR0SvmExitRdtsc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4268	{
4269	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4270	PVM pVM = pVCpu->CTX_SUFF(pVM);
4271	int rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4272	if (RT_LIKELY(rc == VINF_SUCCESS))
4273	{
4274	hmR0SvmUpdateRip(pVCpu, pCtx, 2);
4275	pSvmTransient->fUpdateTscOffsetting = true;
4276
4277	/* Single step check. */
4278	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4279	}
4280	else
4281	{
4282	AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtsc failed with %Rrc\n", rc));
4283	rc = VERR_EM_INTERPRETER;
4284	}
4285	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtsc);
4286	return rc;
4287	}
4288
4289
4290	/**
4291	* #VMEXIT handler for RDTSCP (SVM_EXIT_RDTSCP). Conditional #VMEXIT.
4292	*/
4293	HMSVM_EXIT_DECL hmR0SvmExitRdtscp(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4294	{
4295	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4296	int rc = EMInterpretRdtscp(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
4297	if (RT_LIKELY(rc == VINF_SUCCESS))
4298	{
4299	hmR0SvmUpdateRip(pVCpu, pCtx, 3);
4300	pSvmTransient->fUpdateTscOffsetting = true;
4301	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4302	}
4303	else
4304	{
4305	AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtscp failed with %Rrc\n", rc));
4306	rc = VERR_EM_INTERPRETER;
4307	}
4308	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtscp);
4309	return rc;
4310	}
4311
4312
4313	/**
4314	* #VMEXIT handler for RDPMC (SVM_EXIT_RDPMC). Conditional #VMEXIT.
4315	*/
4316	HMSVM_EXIT_DECL hmR0SvmExitRdpmc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4317	{
4318	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4319	int rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
4320	if (RT_LIKELY(rc == VINF_SUCCESS))
4321	{
4322	hmR0SvmUpdateRip(pVCpu, pCtx, 2);
4323	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4324	}
4325	else
4326	{
4327	AssertMsgFailed(("hmR0SvmExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
4328	rc = VERR_EM_INTERPRETER;
4329	}
4330	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdpmc);
4331	return rc;
4332	}
4333
4334
4335	/**
4336	* #VMEXIT handler for INVLPG (SVM_EXIT_INVLPG). Conditional #VMEXIT.
4337	*/
4338	HMSVM_EXIT_DECL hmR0SvmExitInvlpg(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4339	{
4340	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4341	PVM pVM = pVCpu->CTX_SUFF(pVM);
4342	Assert(!pVM->hm.s.fNestedPaging);
4343
4344	/** @todo Decode Assist. */
4345	int rc = hmR0SvmInterpretInvlpg(pVM, pVCpu, CPUMCTX2CORE(pCtx)); /* Updates RIP if successful. */
4346	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpg);
4347	Assert(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER);
4348	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4349	return rc;
4350	}
4351
4352
4353	/**
4354	* #VMEXIT handler for HLT (SVM_EXIT_HLT). Conditional #VMEXIT.
4355	*/
4356	HMSVM_EXIT_DECL hmR0SvmExitHlt(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4357	{
4358	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4359	hmR0SvmUpdateRip(pVCpu, pCtx, 1);
4360	int rc = EMShouldContinueAfterHalt(pVCpu, pCtx) ? VINF_SUCCESS : VINF_EM_HALT;
4361	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4362	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitHlt);
4363	return rc;
4364	}
4365
4366
4367	/**
4368	* #VMEXIT handler for MONITOR (SVM_EXIT_MONITOR). Conditional #VMEXIT.
4369	*/
4370	HMSVM_EXIT_DECL hmR0SvmExitMonitor(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4371	{
4372	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4373	int rc = EMInterpretMonitor(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
4374	if (RT_LIKELY(rc == VINF_SUCCESS))
4375	{
4376	hmR0SvmUpdateRip(pVCpu, pCtx, 3);
4377	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4378	}
4379	else
4380	{
4381	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMonitor: EMInterpretMonitor failed with %Rrc\n", rc));
4382	rc = VERR_EM_INTERPRETER;
4383	}
4384	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMonitor);
4385	return rc;
4386	}
4387
4388
4389	/**
4390	* #VMEXIT handler for MWAIT (SVM_EXIT_MWAIT). Conditional #VMEXIT.
4391	*/
4392	HMSVM_EXIT_DECL hmR0SvmExitMwait(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4393	{
4394	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4395	VBOXSTRICTRC rc2 = EMInterpretMWait(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
4396	int rc = VBOXSTRICTRC_VAL(rc2);
4397	if ( rc == VINF_EM_HALT
4398	\|\| rc == VINF_SUCCESS)
4399	{
4400	hmR0SvmUpdateRip(pVCpu, pCtx, 3);
4401
4402	if ( rc == VINF_EM_HALT
4403	&& EMMonitorWaitShouldContinue(pVCpu, pCtx))
4404	{
4405	rc = VINF_SUCCESS;
4406	}
4407	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4408	}
4409	else
4410	{
4411	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMwait: EMInterpretMWait failed with %Rrc\n", rc));
4412	rc = VERR_EM_INTERPRETER;
4413	}
4414	AssertMsg(rc == VINF_SUCCESS \|\| rc == VINF_EM_HALT \|\| rc == VERR_EM_INTERPRETER,
4415	("hmR0SvmExitMwait: EMInterpretMWait failed rc=%Rrc\n", rc));
4416	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMwait);
4417	return rc;
4418	}
4419
4420
4421	/**
4422	* #VMEXIT handler for shutdown (triple-fault) (SVM_EXIT_SHUTDOWN).
4423	* Conditional #VMEXIT.
4424	*/
4425	HMSVM_EXIT_DECL hmR0SvmExitShutdown(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4426	{
4427	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4428	return VINF_EM_RESET;
4429	}
4430
4431
4432	/**
4433	* #VMEXIT handler for CRx reads (SVM_EXIT_READ_CR*). Conditional #VMEXIT.
4434	*/
4435	HMSVM_EXIT_DECL hmR0SvmExitReadCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4436	{
4437	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4438
4439	Log4(("hmR0SvmExitReadCRx: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
4440
4441	/** @todo Decode Assist. */
4442	VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
4443	int rc = VBOXSTRICTRC_VAL(rc2);
4444	AssertMsg(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3,
4445	("hmR0SvmExitReadCRx: EMInterpretInstruction failed rc=%Rrc\n", rc));
4446	Assert((pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0) <= 15);
4447	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCRxRead[pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0]);
4448	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4449	return rc;
4450	}
4451
4452
4453	/**
4454	* #VMEXIT handler for CRx writes (SVM_EXIT_WRITE_CR*). Conditional #VMEXIT.
4455	*/
4456	HMSVM_EXIT_DECL hmR0SvmExitWriteCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4457	{
4458	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4459	/** @todo Decode Assist. */
4460	VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
4461	int rc = VBOXSTRICTRC_VAL(rc2);
4462	if (rc == VINF_SUCCESS)
4463	{
4464	/* RIP has been updated by EMInterpretInstruction(). */
4465	Assert((pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0) <= 15);
4466	switch (pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0)
4467	{
4468	case 0: /* CR0. */
4469	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
4470	break;
4471
4472	case 3: /* CR3. */
4473	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
4474	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR3);
4475	break;
4476
4477	case 4: /* CR4. */
4478	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR4);
4479	break;
4480
4481	case 8: /* CR8 (TPR). */
4482	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4483	break;
4484
4485	default:
4486	AssertMsgFailed(("hmR0SvmExitWriteCRx: Invalid/Unexpected Write-CRx exit. u64ExitCode=%#RX64 %#x CRx=%#RX64\n",
4487	pSvmTransient->u64ExitCode, pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0));
4488	break;
4489	}
4490	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4491	}
4492	else
4493	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
4494	return rc;
4495	}
4496
4497
4498	/**
4499	* #VMEXIT handler for instructions that result in a #UD exception delivered to
4500	* the guest.
4501	*/
4502	HMSVM_EXIT_DECL hmR0SvmExitSetPendingXcptUD(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4503	{
4504	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4505	hmR0SvmSetPendingXcptUD(pVCpu);
4506	return VINF_SUCCESS;
4507	}
4508
4509
4510	/**
4511	* #VMEXIT handler for MSR read and writes (SVM_EXIT_MSR). Conditional #VMEXIT.
4512	*/
4513	HMSVM_EXIT_DECL hmR0SvmExitMsr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4514	{
4515	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4516	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4517	PVM pVM = pVCpu->CTX_SUFF(pVM);
4518
4519	int rc;
4520	if (pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
4521	{
4522	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
4523
4524	/* Handle TPR patching; intercepted LSTAR write. */
4525	if ( pVM->hm.s.fTPRPatchingActive
4526	&& pCtx->ecx == MSR_K8_LSTAR)
4527	{
4528	if ((pCtx->eax & 0xff) != pSvmTransient->u8GuestTpr)
4529	{
4530	/* Our patch code uses LSTAR for TPR caching for 32-bit guests. */
4531	int rc2 = PDMApicSetTPR(pVCpu, pCtx->eax & 0xff);
4532	AssertRC(rc2);
4533	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4534	}
4535	hmR0SvmUpdateRip(pVCpu, pCtx, 2);
4536	rc = VINF_SUCCESS;
4537	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4538	return rc;
4539	}
4540
4541	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4542	{
4543	rc = EMInterpretWrmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4544	if (RT_LIKELY(rc == VINF_SUCCESS))
4545	{
4546	pCtx->rip = pVmcb->ctrl.u64NextRIP;
4547	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4548	}
4549	else
4550	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: EMInterpretWrmsr failed rc=%Rrc\n", rc));
4551	}
4552	else
4553	{
4554	rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */));
4555	if (RT_LIKELY(rc == VINF_SUCCESS))
4556	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc); /* RIP updated by EMInterpretInstruction(). */
4557	else
4558	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: WrMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
4559	}
4560
4561	if (rc == VINF_SUCCESS)
4562	{
4563	/* If this is an X2APIC WRMSR access, update the APIC state as well. */
4564	if ( pCtx->ecx >= MSR_IA32_X2APIC_START
4565	&& pCtx->ecx <= MSR_IA32_X2APIC_END)
4566	{
4567	/*
4568	* We've already saved the APIC related guest-state (TPR) in hmR0SvmPostRunGuest(). When full APIC register
4569	* virtualization is implemented we'll have to make sure APIC state is saved from the VMCB before
4570	* EMInterpretWrmsr() changes it.
4571	*/
4572	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4573	}
4574	else if (pCtx->ecx == MSR_K6_EFER)
4575	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
4576	else if (pCtx->ecx == MSR_IA32_TSC)
4577	pSvmTransient->fUpdateTscOffsetting = true;
4578	}
4579	}
4580	else
4581	{
4582	/* MSR Read access. */
4583	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
4584	Assert(pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_READ);
4585
4586	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4587	{
4588	rc = EMInterpretRdmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4589	if (RT_LIKELY(rc == VINF_SUCCESS))
4590	{
4591	pCtx->rip = pVmcb->ctrl.u64NextRIP;
4592	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4593	}
4594	else
4595	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: EMInterpretRdmsr failed rc=%Rrc\n", rc));
4596	}
4597	else
4598	{
4599	rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0));
4600	if (RT_UNLIKELY(rc != VINF_SUCCESS))
4601	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: RdMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
4602	/* RIP updated by EMInterpretInstruction(). */
4603	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4604	}
4605	}
4606
4607	/* RIP has been updated by EMInterpret[Rd\|Wr]msr(). */
4608	return rc;
4609	}
4610
4611
4612	/**
4613	* #VMEXIT handler for DRx read (SVM_EXIT_READ_DRx). Conditional #VMEXIT.
4614	*/
4615	HMSVM_EXIT_DECL hmR0SvmExitReadDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4616	{
4617	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4618	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
4619
4620	/* We should -not- get this #VMEXIT if the guest's debug registers were active. */
4621	if (pSvmTransient->fWasGuestDebugStateActive)
4622	{
4623	AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
4624	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
4625	return VERR_SVM_UNEXPECTED_EXIT;
4626	}
4627
4628	/*
4629	* Lazy DR0-3 loading.
4630	*/
4631	if (!pSvmTransient->fWasHyperDebugStateActive)
4632	{
4633	Assert(!DBGFIsStepping(pVCpu)); Assert(!pVCpu->hm.s.fSingleInstruction);
4634	Log5(("hmR0SvmExitReadDRx: Lazy loading guest debug registers\n"));
4635
4636	/* Don't intercept DRx read and writes. */
4637	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4638	pVmcb->ctrl.u16InterceptRdDRx = 0;
4639	pVmcb->ctrl.u16InterceptWrDRx = 0;
4640	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
4641
4642	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
4643	VMMRZCallRing3Disable(pVCpu);
4644	HM_DISABLE_PREEMPT_IF_NEEDED();
4645
4646	/* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
4647	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
4648	Assert(CPUMIsGuestDebugStateActive(pVCpu) \|\| HC_ARCH_BITS == 32);
4649
4650	HM_RESTORE_PREEMPT_IF_NEEDED();
4651	VMMRZCallRing3Enable(pVCpu);
4652
4653	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
4654	return VINF_SUCCESS;
4655	}
4656
4657	/*
4658	* Interpret the read/writing of DRx.
4659	*/
4660	/** @todo Decode assist. */
4661	VBOXSTRICTRC rc = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
4662	Log5(("hmR0SvmExitReadDRx: Emulated DRx access: rc=%Rrc\n", VBOXSTRICTRC_VAL(rc)));
4663	if (RT_LIKELY(rc == VINF_SUCCESS))
4664	{
4665	/* Not necessary for read accesses but whatever doesn't hurt for now, will be fixed with decode assist. */
4666	/** @todo CPUM should set this flag! */
4667	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
4668	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4669	}
4670	else
4671	Assert(rc == VERR_EM_INTERPRETER);
4672	return VBOXSTRICTRC_TODO(rc);
4673	}
4674
4675
4676	/**
4677	* #VMEXIT handler for DRx write (SVM_EXIT_WRITE_DRx). Conditional #VMEXIT.
4678	*/
4679	HMSVM_EXIT_DECL hmR0SvmExitWriteDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4680	{
4681	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4682	/* For now it's the same since we interpret the instruction anyway. Will change when using of Decode Assist is implemented. */
4683	int rc = hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
4684	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
4685	STAM_COUNTER_DEC(&pVCpu->hm.s.StatExitDRxRead);
4686	return rc;
4687	}
4688
4689
4690	/**
4691	* #VMEXIT handler for I/O instructions (SVM_EXIT_IOIO). Conditional #VMEXIT.
4692	*/
4693	HMSVM_EXIT_DECL hmR0SvmExitIOInstr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4694	{
4695	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4696
4697	/* I/O operation lookup arrays. */
4698	static uint32_t const s_aIOSize[8] = { 0, 1, 2, 0, 4, 0, 0, 0 }; /* Size of the I/O accesses in bytes. */
4699	static uint32_t const s_aIOOpAnd[8] = { 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 }; /* AND masks for saving
4700	the result (in AL/AX/EAX). */
4701	Log4(("hmR0SvmExitIOInstr: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
4702
4703	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4704	PVM pVM = pVCpu->CTX_SUFF(pVM);
4705
4706	/* Refer AMD spec. 15.10.2 "IN and OUT Behaviour" and Figure 15-2. "EXITINFO1 for IOIO Intercept" for the format. */
4707	SVMIOIOEXIT IoExitInfo;
4708	IoExitInfo.u = (uint32_t)pVmcb->ctrl.u64ExitInfo1;
4709	uint32_t uIOWidth = (IoExitInfo.u >> 4) & 0x7;
4710	uint32_t cbValue = s_aIOSize[uIOWidth];
4711	uint32_t uAndVal = s_aIOOpAnd[uIOWidth];
4712
4713	if (RT_UNLIKELY(!cbValue))
4714	{
4715	AssertMsgFailed(("hmR0SvmExitIOInstr: Invalid IO operation. uIOWidth=%u\n", uIOWidth));
4716	return VERR_EM_INTERPRETER;
4717	}
4718
4719	VBOXSTRICTRC rcStrict;
4720	if (IoExitInfo.n.u1STR)
4721	{
4722	/* INS/OUTS - I/O String instruction. */
4723	PDISCPUSTATE pDis = &pVCpu->hm.s.DisState;
4724
4725	/** @todo Huh? why can't we use the segment prefix information given by AMD-V
4726	* in EXITINFO1? Investigate once this thing is up and running. */
4727
4728	rcStrict = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL);
4729	if (rcStrict == VINF_SUCCESS)
4730	{
4731	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
4732	{
4733	rcStrict = IOMInterpretOUTSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
4734	(DISCPUMODE)pDis->uAddrMode, cbValue);
4735	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
4736	}
4737	else
4738	{
4739	rcStrict = IOMInterpretINSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
4740	(DISCPUMODE)pDis->uAddrMode, cbValue);
4741	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
4742	}
4743	}
4744	else
4745	rcStrict = VINF_EM_RAW_EMULATE_INSTR;
4746	}
4747	else
4748	{
4749	/* IN/OUT - I/O instruction. */
4750	Assert(!IoExitInfo.n.u1REP);
4751
4752	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
4753	{
4754	rcStrict = IOMIOPortWrite(pVM, pVCpu, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, cbValue);
4755	if (rcStrict == VINF_IOM_R3_IOPORT_WRITE)
4756	HMR0SavePendingIOPortWrite(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
4757
4758	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
4759	}
4760	else
4761	{
4762	uint32_t u32Val = 0;
4763
4764	rcStrict = IOMIOPortRead(pVM, pVCpu, IoExitInfo.n.u16Port, &u32Val, cbValue);
4765	if (IOM_SUCCESS(rcStrict))
4766	{
4767	/* Save result of I/O IN instr. in AL/AX/EAX. */
4768	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
4769	}
4770	else if (rcStrict == VINF_IOM_R3_IOPORT_READ)
4771	HMR0SavePendingIOPortRead(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
4772
4773	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
4774	}
4775	}
4776
4777	if (IOM_SUCCESS(rcStrict))
4778	{
4779	/* AMD-V saves the RIP of the instruction following the IO instruction in EXITINFO2. */
4780	pCtx->rip = pVmcb->ctrl.u64ExitInfo2;
4781
4782	/*
4783	* If any I/O breakpoints are armed, we need to check if one triggered
4784	* and take appropriate action.
4785	* Note that the I/O breakpoint type is undefined if CR4.DE is 0.
4786	*/
4787	/** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
4788	* execution engines about whether hyper BPs and such are pending. */
4789	uint32_t const uDr7 = pCtx->dr[7];
4790	if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
4791	&& X86_DR7_ANY_RW_IO(uDr7)
4792	&& (pCtx->cr4 & X86_CR4_DE))
4793	\|\| DBGFBpIsHwIoArmed(pVM)))
4794	{
4795	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
4796	VMMRZCallRing3Disable(pVCpu);
4797	HM_DISABLE_PREEMPT_IF_NEEDED();
4798
4799	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
4800	CPUMR0DebugStateMaybeSaveGuest(pVCpu, false /fDr6/);
4801
4802	VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, pCtx, IoExitInfo.n.u16Port, cbValue);
4803	if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
4804	{
4805	/* Raise #DB. */
4806	pVmcb->guest.u64DR6 = pCtx->dr[6];
4807	pVmcb->guest.u64DR7 = pCtx->dr[7];
4808	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
4809	hmR0SvmSetPendingXcptDB(pVCpu);
4810	}
4811	/* rcStrict is VINF_SUCCESS or in [VINF_EM_FIRST..VINF_EM_LAST]. */
4812	else if ( rcStrict2 != VINF_SUCCESS
4813	&& (rcStrict == VINF_SUCCESS \|\| rcStrict2 < rcStrict))
4814	rcStrict = rcStrict2;
4815
4816	HM_RESTORE_PREEMPT_IF_NEEDED();
4817	VMMRZCallRing3Enable(pVCpu);
4818	}
4819
4820	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
4821	}
4822
4823	#ifdef VBOX_STRICT
4824	if (rcStrict == VINF_IOM_R3_IOPORT_READ)
4825	Assert(IoExitInfo.n.u1Type == SVM_IOIO_READ);
4826	else if (rcStrict == VINF_IOM_R3_IOPORT_WRITE)
4827	Assert(IoExitInfo.n.u1Type == SVM_IOIO_WRITE);
4828	else
4829	{
4830	/** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
4831	* statuses, that the VMM device and some others may return. See
4832	* IOM_SUCCESS() for guidance. */
4833	AssertMsg( RT_FAILURE(rcStrict)
4834	\|\| rcStrict == VINF_SUCCESS
4835	\|\| rcStrict == VINF_EM_RAW_EMULATE_INSTR
4836	\|\| rcStrict == VINF_EM_DBG_BREAKPOINT
4837	\|\| rcStrict == VINF_EM_RAW_GUEST_TRAP
4838	\|\| rcStrict == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
4839	}
4840	#endif
4841	return VBOXSTRICTRC_TODO(rcStrict);
4842	}
4843
4844
4845	/**
4846	* #VMEXIT handler for Nested Page-faults (SVM_EXIT_NPF). Conditional
4847	* #VMEXIT.
4848	*/
4849	HMSVM_EXIT_DECL hmR0SvmExitNestedPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4850	{
4851	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4852	PVM pVM = pVCpu->CTX_SUFF(pVM);
4853	Assert(pVM->hm.s.fNestedPaging);
4854
4855	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
4856
4857	/* See AMD spec. 15.25.6 "Nested versus Guest Page Faults, Fault Ordering" for VMCB details for #NPF. */
4858	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4859	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
4860	RTGCPHYS GCPhysFaultAddr = pVmcb->ctrl.u64ExitInfo2;
4861
4862	Log4(("#NPF at CS:RIP=%04x:%#RX64 faultaddr=%RGp errcode=%#x \n", pCtx->cs.Sel, pCtx->rip, GCPhysFaultAddr, u32ErrCode));
4863
4864	#ifdef VBOX_HM_WITH_GUEST_PATCHING
4865	/* TPR patching for 32-bit guests, using the reserved bit in the page tables for MMIO regions. */
4866	if ( pVM->hm.s.fTprPatchingAllowed
4867	&& (GCPhysFaultAddr & PAGE_OFFSET_MASK) == 0x80 /* TPR offset. */
4868	&& ( !(u32ErrCode & X86_TRAP_PF_P) /* Not present */
4869	\|\| (u32ErrCode & (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) /* MMIO page. */
4870	&& !CPUMIsGuestInLongModeEx(pCtx)
4871	&& !CPUMGetGuestCPL(pVCpu)
4872	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
4873	{
4874	RTGCPHYS GCPhysApicBase = pCtx->msrApicBase;
4875	GCPhysApicBase &= PAGE_BASE_GC_MASK;
4876
4877	if (GCPhysFaultAddr == GCPhysApicBase + 0x80)
4878	{
4879	/* Only attempt to patch the instruction once. */
4880	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
4881	if (!pPatch)
4882	return VINF_EM_HM_PATCH_TPR_INSTR;
4883	}
4884	}
4885	#endif
4886
4887	/*
4888	* Determine the nested paging mode.
4889	*/
4890	PGMMODE enmNestedPagingMode;
4891	#if HC_ARCH_BITS == 32
4892	if (CPUMIsGuestInLongModeEx(pCtx))
4893	enmNestedPagingMode = PGMMODE_AMD64_NX;
4894	else
4895	#endif
4896	enmNestedPagingMode = PGMGetHostMode(pVM);
4897
4898	/*
4899	* MMIO optimization using the reserved (RSVD) bit in the guest page tables for MMIO pages.
4900	*/
4901	int rc;
4902	Assert((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
4903	if ((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P))
4904	{
4905	VBOXSTRICTRC rc2 = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmNestedPagingMode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr,
4906	u32ErrCode);
4907	rc = VBOXSTRICTRC_VAL(rc2);
4908
4909	/*
4910	* If we succeed, resume guest execution.
4911	* If we fail in interpreting the instruction because we couldn't get the guest physical address
4912	* of the page containing the instruction via the guest's page tables (we would invalidate the guest page
4913	* in the host TLB), resume execution which would cause a guest page fault to let the guest handle this
4914	* weird case. See @bugref{6043}.
4915	*/
4916	if ( rc == VINF_SUCCESS
4917	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
4918	\|\| rc == VERR_PAGE_NOT_PRESENT)
4919	{
4920	/* Successfully handled MMIO operation. */
4921	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4922	rc = VINF_SUCCESS;
4923	}
4924	return rc;
4925	}
4926
4927	TRPMAssertXcptPF(pVCpu, GCPhysFaultAddr, u32ErrCode);
4928	rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmNestedPagingMode, u32ErrCode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr);
4929	TRPMResetTrap(pVCpu);
4930
4931	Log4(("#NPF: PGMR0Trap0eHandlerNestedPaging returned %Rrc CS:RIP=%04x:%#RX64\n", rc, pCtx->cs.Sel, pCtx->rip));
4932
4933	/*
4934	* Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}.
4935	*/
4936	if ( rc == VINF_SUCCESS
4937	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
4938	\|\| rc == VERR_PAGE_NOT_PRESENT)
4939	{
4940	/* We've successfully synced our shadow page tables. */
4941	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
4942	rc = VINF_SUCCESS;
4943	}
4944
4945	return rc;
4946	}
4947
4948
4949	/**
4950	* #VMEXIT handler for virtual interrupt (SVM_EXIT_VINTR). Conditional #VMEXIT.
4951	*/
4952	HMSVM_EXIT_DECL hmR0SvmExitVIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4953	{
4954	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4955
4956	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4957	pVmcb->ctrl.IntCtrl.n.u1VIrqValid = 0; /* No virtual interrupts pending, we'll inject the current one/NMI before reentry. */
4958	pVmcb->ctrl.IntCtrl.n.u8VIrqVector = 0;
4959
4960	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive interrupts/NMIs, it is now ready. */
4961	pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_VINTR;
4962	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_TPR);
4963
4964	/* Deliver the pending interrupt/NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
4965	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
4966	return VINF_SUCCESS;
4967	}
4968
4969
4970	/**
4971	* #VMEXIT handler for task switches (SVM_EXIT_TASK_SWITCH). Conditional #VMEXIT.
4972	*/
4973	HMSVM_EXIT_DECL hmR0SvmExitTaskSwitch(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4974	{
4975	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4976
4977	#ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
4978	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
4979	#endif
4980
4981	/* Check if this task-switch occurred while delivery an event through the guest IDT. */
4982	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4983	if ( !(pVmcb->ctrl.u64ExitInfo2 & (SVM_EXIT2_TASK_SWITCH_IRET \| SVM_EXIT2_TASK_SWITCH_JMP))
4984	&& pVCpu->hm.s.Event.fPending) /** @todo fPending cannot be 'true', see hmR0SvmInjectPendingEvent(). See @bugref{7362}.*/
4985	{
4986	/*
4987	* AMD-V does not provide us with the original exception but we have it in u64IntInfo since we
4988	* injected the event during VM-entry.
4989	*/
4990	Log4(("hmR0SvmExitTaskSwitch: TS occurred during event delivery.\n"));
4991	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
4992	return VINF_EM_RAW_INJECT_TRPM_EVENT;
4993	}
4994
4995	/** @todo Emulate task switch someday, currently just going back to ring-3 for
4996	* emulation. */
4997	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
4998	return VERR_EM_INTERPRETER;
4999	}
5000
5001
5002	/**
5003	* #VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional #VMEXIT.
5004	*/
5005	HMSVM_EXIT_DECL hmR0SvmExitVmmCall(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5006	{
5007	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5008
5009	/* First check if this is a patched VMMCALL for mov TPR */
5010	int rc = hmR0SvmEmulateMovTpr(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
5011	if (rc == VINF_SUCCESS)
5012	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
5013	else if (rc == VERR_NOT_FOUND)
5014	{
5015	/* Handle GIM provider hypercalls. */
5016	rc = VERR_NOT_SUPPORTED;
5017	if (GIMAreHypercallsEnabled(pVCpu))
5018	rc = GIMHypercall(pVCpu, pCtx);
5019	}
5020
5021	if (rc != VINF_SUCCESS)
5022	hmR0SvmSetPendingXcptUD(pVCpu);
5023	return VINF_SUCCESS;
5024	}
5025
5026
5027	/**
5028	* #VMEXIT handler for IRET (SVM_EXIT_IRET). Conditional #VMEXIT.
5029	*/
5030	HMSVM_EXIT_DECL hmR0SvmExitIret(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5031	{
5032	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5033
5034	/* Clear NMI blocking. */
5035	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
5036
5037	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
5038	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5039	hmR0SvmClearIretIntercept(pVmcb);
5040
5041	/* Deliver the pending NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
5042	return VINF_SUCCESS;
5043	}
5044
5045
5046	/**
5047	* #VMEXIT handler for page-fault exceptions (SVM_EXIT_EXCEPTION_E). Conditional
5048	* #VMEXIT.
5049	*/
5050	HMSVM_EXIT_DECL hmR0SvmExitXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5051	{
5052	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5053
5054	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5055
5056	/* See AMD spec. 15.12.15 "#PF (Page Fault)". */
5057	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5058	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
5059	RTGCUINTPTR uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
5060	PVM pVM = pVCpu->CTX_SUFF(pVM);
5061
5062	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(HMSVM_ALWAYS_TRAP_PF)
5063	if (pVM->hm.s.fNestedPaging)
5064	{
5065	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
5066	if (!pSvmTransient->fVectoringDoublePF)
5067	{
5068	/* A genuine guest #PF, reflect it to the guest. */
5069	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
5070	Log4(("#PF: Guest page fault at %04X:%RGv FaultAddr=%RGv ErrCode=%#x\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip,
5071	uFaultAddress, u32ErrCode));
5072	}
5073	else
5074	{
5075	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
5076	hmR0SvmSetPendingXcptDF(pVCpu);
5077	Log4(("Pending #DF due to vectoring #PF. NP\n"));
5078	}
5079	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
5080	return VINF_SUCCESS;
5081	}
5082	#endif
5083
5084	Assert(!pVM->hm.s.fNestedPaging);
5085
5086	#ifdef VBOX_HM_WITH_GUEST_PATCHING
5087	/* Shortcut for APIC TPR reads and writes; only applicable to 32-bit guests. */
5088	if ( pVM->hm.s.fTprPatchingAllowed
5089	&& (uFaultAddress & 0xfff) == 0x80 /* TPR offset. */
5090	&& !(u32ErrCode & X86_TRAP_PF_P) /* Not present. */
5091	&& !CPUMIsGuestInLongModeEx(pCtx)
5092	&& !CPUMGetGuestCPL(pVCpu)
5093	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
5094	{
5095	RTGCPHYS GCPhysApicBase;
5096	GCPhysApicBase = pCtx->msrApicBase;
5097	GCPhysApicBase &= PAGE_BASE_GC_MASK;
5098
5099	/* Check if the page at the fault-address is the APIC base. */
5100	RTGCPHYS GCPhysPage;
5101	int rc2 = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL /* pfFlags */, &GCPhysPage);
5102	if ( rc2 == VINF_SUCCESS
5103	&& GCPhysPage == GCPhysApicBase)
5104	{
5105	/* Only attempt to patch the instruction once. */
5106	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
5107	if (!pPatch)
5108	return VINF_EM_HM_PATCH_TPR_INSTR;
5109	}
5110	}
5111	#endif
5112
5113	Log4(("#PF: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode %#RX32 cr3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
5114	pCtx->rip, u32ErrCode, pCtx->cr3));
5115
5116	/* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
5117	of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
5118	if (pSvmTransient->fVectoringPF)
5119	{
5120	Assert(pVCpu->hm.s.Event.fPending);
5121	return VINF_EM_RAW_INJECT_TRPM_EVENT;
5122	}
5123
5124	TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
5125	int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
5126
5127	Log4(("#PF rc=%Rrc\n", rc));
5128
5129	if (rc == VINF_SUCCESS)
5130	{
5131	/* Successfully synced shadow pages tables or emulated an MMIO instruction. */
5132	TRPMResetTrap(pVCpu);
5133	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
5134	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
5135	return rc;
5136	}
5137	else if (rc == VINF_EM_RAW_GUEST_TRAP)
5138	{
5139	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
5140
5141	if (!pSvmTransient->fVectoringDoublePF)
5142	{
5143	/* It's a guest page fault and needs to be reflected to the guest. */
5144	u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
5145	TRPMResetTrap(pVCpu);
5146	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
5147	}
5148	else
5149	{
5150	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
5151	TRPMResetTrap(pVCpu);
5152	hmR0SvmSetPendingXcptDF(pVCpu);
5153	Log4(("#PF: Pending #DF due to vectoring #PF\n"));
5154	}
5155
5156	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
5157	return VINF_SUCCESS;
5158	}
5159
5160	TRPMResetTrap(pVCpu);
5161	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
5162	return rc;
5163	}
5164
5165
5166	/**
5167	* #VMEXIT handler for device-not-available exceptions (SVM_EXIT_EXCEPTION_7).
5168	* Conditional #VMEXIT.
5169	*/
5170	HMSVM_EXIT_DECL hmR0SvmExitXcptNM(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5171	{
5172	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5173
5174	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5175
5176	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
5177	VMMRZCallRing3Disable(pVCpu);
5178	HM_DISABLE_PREEMPT_IF_NEEDED();
5179
5180	int rc;
5181	/* If the guest FPU was active at the time of the #NM exit, then it's a guest fault. */
5182	if (pSvmTransient->fWasGuestFPUStateActive)
5183	{
5184	rc = VINF_EM_RAW_GUEST_TRAP;
5185	Assert(CPUMIsGuestFPUStateActive(pVCpu) \|\| HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0));
5186	}
5187	else
5188	{
5189	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
5190	Assert(!pSvmTransient->fWasGuestFPUStateActive);
5191	#endif
5192	rc = CPUMR0Trap07Handler(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
5193	Assert(rc == VINF_EM_RAW_GUEST_TRAP \|\| (rc == VINF_SUCCESS && CPUMIsGuestFPUStateActive(pVCpu)));
5194	}
5195
5196	HM_RESTORE_PREEMPT_IF_NEEDED();
5197	VMMRZCallRing3Enable(pVCpu);
5198
5199	if (rc == VINF_SUCCESS)
5200	{
5201	/* Guest FPU state was activated, we'll want to change CR0 FPU intercepts before the next VM-reentry. */
5202	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
5203	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowNM);
5204	pVCpu->hm.s.fUseGuestFpu = true;
5205	}
5206	else
5207	{
5208	/* Forward #NM to the guest. */
5209	Assert(rc == VINF_EM_RAW_GUEST_TRAP);
5210	hmR0SvmSetPendingXcptNM(pVCpu);
5211	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNM);
5212	}
5213	return VINF_SUCCESS;
5214	}
5215
5216
5217	/**
5218	* #VMEXIT handler for math-fault exceptions (SVM_EXIT_EXCEPTION_10).
5219	* Conditional #VMEXIT.
5220	*/
5221	HMSVM_EXIT_DECL hmR0SvmExitXcptMF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5222	{
5223	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5224
5225	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5226
5227	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
5228
5229	if (!(pCtx->cr0 & X86_CR0_NE))
5230	{
5231	PVM pVM = pVCpu->CTX_SUFF(pVM);
5232	PDISSTATE pDis = &pVCpu->hm.s.DisState;
5233	unsigned cbOp;
5234	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp);
5235	if (RT_SUCCESS(rc))
5236	{
5237	/* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
5238	rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13, 1, 0 /* uTagSrc */);
5239	if (RT_SUCCESS(rc))
5240	pCtx->rip += cbOp;
5241	}
5242	else
5243	Log4(("hmR0SvmExitXcptMF: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
5244	return rc;
5245	}
5246
5247	hmR0SvmSetPendingXcptMF(pVCpu);
5248	return VINF_SUCCESS;
5249	}
5250
5251
5252	/**
5253	* #VMEXIT handler for debug exceptions (SVM_EXIT_EXCEPTION_1). Conditional
5254	* #VMEXIT.
5255	*/
5256	HMSVM_EXIT_DECL hmR0SvmExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5257	{
5258	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5259
5260	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5261
5262	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
5263
5264	/* This can be a fault-type #DB (instruction breakpoint) or a trap-type #DB (data breakpoint). However, for both cases
5265	DR6 and DR7 are updated to what the exception handler expects. See AMD spec. 15.12.2 "#DB (Debug)". */
5266	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5267	PVM pVM = pVCpu->CTX_SUFF(pVM);
5268	int rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVmcb->guest.u64DR6, pVCpu->hm.s.fSingleInstruction);
5269	if (rc == VINF_EM_RAW_GUEST_TRAP)
5270	{
5271	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> guest trap\n", pVmcb->guest.u64DR6));
5272	if (CPUMIsHyperDebugStateActive(pVCpu))
5273	CPUMSetGuestDR6(pVCpu, CPUMGetGuestDR6(pVCpu) \| pVmcb->guest.u64DR6);
5274
5275	/* Reflect the exception back to the guest. */
5276	hmR0SvmSetPendingXcptDB(pVCpu);
5277	rc = VINF_SUCCESS;
5278	}
5279
5280	/*
5281	* Update DR6.
5282	*/
5283	if (CPUMIsHyperDebugStateActive(pVCpu))
5284	{
5285	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> %Rrc\n", pVmcb->guest.u64DR6, rc));
5286	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
5287	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
5288	}
5289	else
5290	{
5291	AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc));
5292	Assert(!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu));
5293	}
5294
5295	return rc;
5296	}
5297
5298	/** @} */
5299

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source: vbox/trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp@ 52934

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