HMSVMR0.cpp@ 64874

Last change on this file since 64874 was 64874, checked in by vboxsync, 8 years ago
VMM/HMSVMR0: Use macro constant for TPR offset
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1	/* $Id: HMSVMR0.cpp 64874 2016-12-14 14:21:45Z vboxsync $ */
2	/** @file
3	* HM SVM (AMD-V) - Host Context Ring-0.
4	*/
5
6	/*
7	* Copyright (C) 2013-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_HM
23	#include <iprt/asm-amd64-x86.h>
24	#include <iprt/thread.h>
25
26	#include <VBox/vmm/pdmapi.h>
27	#include <VBox/vmm/dbgf.h>
28	#include <VBox/vmm/iem.h>
29	#include <VBox/vmm/iom.h>
30	#include <VBox/vmm/tm.h>
31	#include <VBox/vmm/gim.h>
32	#include <VBox/vmm/apic.h>
33	#include "HMInternal.h"
34	#include <VBox/vmm/vm.h>
35	#include "HMSVMR0.h"
36	#include "dtrace/VBoxVMM.h"
37
38	#ifdef DEBUG_ramshankar
39	# define HMSVM_SYNC_FULL_GUEST_STATE
40	# define HMSVM_ALWAYS_TRAP_ALL_XCPTS
41	# define HMSVM_ALWAYS_TRAP_PF
42	# define HMSVM_ALWAYS_TRAP_TASK_SWITCH
43	#endif
44
45
46	/*********************************************************************************************************************************
47	* Defined Constants And Macros *
48	*********************************************************************************************************************************/
49	#ifdef VBOX_WITH_STATISTICS
50	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
51	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
52	if ((u64ExitCode) == SVM_EXIT_NPF) \
53	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf); \
54	else \
55	STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
56	} while (0)
57	#else
58	# define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
59	#endif
60
61	/** If we decide to use a function table approach this can be useful to
62	* switch to a "static DECLCALLBACK(int)". */
63	#define HMSVM_EXIT_DECL static int
64
65	/** @name Segment attribute conversion between CPU and AMD-V VMCB format.
66	*
67	* The CPU format of the segment attribute is described in X86DESCATTRBITS
68	* which is 16-bits (i.e. includes 4 bits of the segment limit).
69	*
70	* The AMD-V VMCB format the segment attribute is compact 12-bits (strictly
71	* only the attribute bits and nothing else). Upper 4-bits are unused.
72	*
73	* @{ */
74	#define HMSVM_CPU_2_VMCB_SEG_ATTR(a) ( ((a) & 0xff) \| (((a) & 0xf000) >> 4) )
75	#define HMSVM_VMCB_2_CPU_SEG_ATTR(a) ( ((a) & 0xff) \| (((a) & 0x0f00) << 4) )
76	/** @} */
77
78	/** @name Macros for loading, storing segment registers to/from the VMCB.
79	* @{ */
80	#define HMSVM_LOAD_SEG_REG(REG, reg) \
81	do \
82	{ \
83	Assert(pCtx->reg.fFlags & CPUMSELREG_FLAGS_VALID); \
84	Assert(pCtx->reg.ValidSel == pCtx->reg.Sel); \
85	pVmcb->guest.REG.u16Sel = pCtx->reg.Sel; \
86	pVmcb->guest.REG.u32Limit = pCtx->reg.u32Limit; \
87	pVmcb->guest.REG.u64Base = pCtx->reg.u64Base; \
88	pVmcb->guest.REG.u16Attr = HMSVM_CPU_2_VMCB_SEG_ATTR(pCtx->reg.Attr.u); \
89	} while (0)
90
91	#define HMSVM_SAVE_SEG_REG(REG, reg) \
92	do \
93	{ \
94	pMixedCtx->reg.Sel = pVmcb->guest.REG.u16Sel; \
95	pMixedCtx->reg.ValidSel = pVmcb->guest.REG.u16Sel; \
96	pMixedCtx->reg.fFlags = CPUMSELREG_FLAGS_VALID; \
97	pMixedCtx->reg.u32Limit = pVmcb->guest.REG.u32Limit; \
98	pMixedCtx->reg.u64Base = pVmcb->guest.REG.u64Base; \
99	pMixedCtx->reg.Attr.u = HMSVM_VMCB_2_CPU_SEG_ATTR(pVmcb->guest.REG.u16Attr); \
100	} while (0)
101	/** @} */
102
103	/** Macro for checking and returning from the using function for
104	* \#VMEXIT intercepts that maybe caused during delivering of another
105	* event in the guest. */
106	#define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
107	do \
108	{ \
109	int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
110	if (RT_LIKELY(rc == VINF_SUCCESS)) { /* likely */ } \
111	else if (rc == VINF_HM_DOUBLE_FAULT) \
112	return VINF_SUCCESS; \
113	else \
114	return rc; \
115	} while (0)
116
117	/** Macro for upgrading a @a a_rc to VINF_EM_DBG_STEPPED after emulating an
118	* instruction that exited. */
119	#define HMSVM_CHECK_SINGLE_STEP(a_pVCpu, a_rc) \
120	do { \
121	if ((a_pVCpu)->hm.s.fSingleInstruction && (a_rc) == VINF_SUCCESS) \
122	(a_rc) = VINF_EM_DBG_STEPPED; \
123	} while (0)
124
125	/** Assert that preemption is disabled or covered by thread-context hooks. */
126	#define HMSVM_ASSERT_PREEMPT_SAFE() Assert( VMMR0ThreadCtxHookIsEnabled(pVCpu) \
127	\|\| !RTThreadPreemptIsEnabled(NIL_RTTHREAD));
128
129	/** Assert that we haven't migrated CPUs when thread-context hooks are not
130	* used. */
131	#define HMSVM_ASSERT_CPU_SAFE() AssertMsg( VMMR0ThreadCtxHookIsEnabled(pVCpu) \
132	\|\| pVCpu->hm.s.idEnteredCpu == RTMpCpuId(), \
133	("Illegal migration! Entered on CPU %u Current %u\n", \
134	pVCpu->hm.s.idEnteredCpu, RTMpCpuId()));
135
136	/** Exception bitmap mask for all contributory exceptions.
137	*
138	* Page fault is deliberately excluded here as it's conditional as to whether
139	* it's contributory or benign. Page faults are handled separately.
140	*/
141	#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) \
142	\| RT_BIT(X86_XCPT_DE))
143
144	/** @name VMCB Clean Bits.
145	*
146	* These flags are used for VMCB-state caching. A set VMCB Clean bit indicates
147	* AMD-V doesn't need to reload the corresponding value(s) from the VMCB in
148	* memory.
149	*
150	* @{ */
151	/** All intercepts vectors, TSC offset, PAUSE filter counter. */
152	#define HMSVM_VMCB_CLEAN_INTERCEPTS RT_BIT(0)
153	/** I/O permission bitmap, MSR permission bitmap. */
154	#define HMSVM_VMCB_CLEAN_IOPM_MSRPM RT_BIT(1)
155	/** ASID. */
156	#define HMSVM_VMCB_CLEAN_ASID RT_BIT(2)
157	/** TRP: V_TPR, V_IRQ, V_INTR_PRIO, V_IGN_TPR, V_INTR_MASKING,
158	V_INTR_VECTOR. */
159	#define HMSVM_VMCB_CLEAN_TPR RT_BIT(3)
160	/** Nested Paging: Nested CR3 (nCR3), PAT. */
161	#define HMSVM_VMCB_CLEAN_NP RT_BIT(4)
162	/** Control registers (CR0, CR3, CR4, EFER). */
163	#define HMSVM_VMCB_CLEAN_CRX_EFER RT_BIT(5)
164	/** Debug registers (DR6, DR7). */
165	#define HMSVM_VMCB_CLEAN_DRX RT_BIT(6)
166	/** GDT, IDT limit and base. */
167	#define HMSVM_VMCB_CLEAN_DT RT_BIT(7)
168	/** Segment register: CS, SS, DS, ES limit and base. */
169	#define HMSVM_VMCB_CLEAN_SEG RT_BIT(8)
170	/** CR2.*/
171	#define HMSVM_VMCB_CLEAN_CR2 RT_BIT(9)
172	/** Last-branch record (DbgCtlMsr, br_from, br_to, lastint_from, lastint_to) */
173	#define HMSVM_VMCB_CLEAN_LBR RT_BIT(10)
174	/** AVIC (AVIC APIC_BAR; AVIC APIC_BACKING_PAGE, AVIC
175	PHYSICAL_TABLE and AVIC LOGICAL_TABLE Pointers). */
176	#define HMSVM_VMCB_CLEAN_AVIC RT_BIT(11)
177	/** Mask of all valid VMCB Clean bits. */
178	#define HMSVM_VMCB_CLEAN_ALL ( HMSVM_VMCB_CLEAN_INTERCEPTS \
179	\| HMSVM_VMCB_CLEAN_IOPM_MSRPM \
180	\| HMSVM_VMCB_CLEAN_ASID \
181	\| HMSVM_VMCB_CLEAN_TPR \
182	\| HMSVM_VMCB_CLEAN_NP \
183	\| HMSVM_VMCB_CLEAN_CRX_EFER \
184	\| HMSVM_VMCB_CLEAN_DRX \
185	\| HMSVM_VMCB_CLEAN_DT \
186	\| HMSVM_VMCB_CLEAN_SEG \
187	\| HMSVM_VMCB_CLEAN_CR2 \
188	\| HMSVM_VMCB_CLEAN_LBR \
189	\| HMSVM_VMCB_CLEAN_AVIC)
190	/** @} */
191
192	/** @name SVM transient.
193	*
194	* A state structure for holding miscellaneous information across AMD-V
195	* VMRUN/\#VMEXIT operation, restored after the transition.
196	*
197	* @{ */
198	typedef struct SVMTRANSIENT
199	{
200	/** The host's rflags/eflags. */
201	RTCCUINTREG fEFlags;
202	#if HC_ARCH_BITS == 32
203	uint32_t u32Alignment0;
204	#endif
205
206	/** The \#VMEXIT exit code (the EXITCODE field in the VMCB). */
207	uint64_t u64ExitCode;
208	/** The guest's TPR value used for TPR shadowing. */
209	uint8_t u8GuestTpr;
210	/** Alignment. */
211	uint8_t abAlignment0[7];
212
213	/** Whether the guest FPU state was active at the time of \#VMEXIT. */
214	bool fWasGuestFPUStateActive;
215	/** Whether the guest debug state was active at the time of \#VMEXIT. */
216	bool fWasGuestDebugStateActive;
217	/** Whether the hyper debug state was active at the time of \#VMEXIT. */
218	bool fWasHyperDebugStateActive;
219	/** Whether the TSC offset mode needs to be updated. */
220	bool fUpdateTscOffsetting;
221	/** Whether the TSC_AUX MSR needs restoring on \#VMEXIT. */
222	bool fRestoreTscAuxMsr;
223	/** Whether the \#VMEXIT was caused by a page-fault during delivery of a
224	* contributary exception or a page-fault. */
225	bool fVectoringDoublePF;
226	/** Whether the \#VMEXIT was caused by a page-fault during delivery of an
227	* external interrupt or NMI. */
228	bool fVectoringPF;
229	} SVMTRANSIENT, *PSVMTRANSIENT;
230	AssertCompileMemberAlignment(SVMTRANSIENT, u64ExitCode, sizeof(uint64_t));
231	AssertCompileMemberAlignment(SVMTRANSIENT, fWasGuestFPUStateActive, sizeof(uint64_t));
232	/** @} */
233
234	/**
235	* MSRPM (MSR permission bitmap) read permissions (for guest RDMSR).
236	*/
237	typedef enum SVMMSREXITREAD
238	{
239	/** Reading this MSR causes a \#VMEXIT. */
240	SVMMSREXIT_INTERCEPT_READ = 0xb,
241	/** Reading this MSR does not cause a \#VMEXIT. */
242	SVMMSREXIT_PASSTHRU_READ
243	} SVMMSREXITREAD;
244
245	/**
246	* MSRPM (MSR permission bitmap) write permissions (for guest WRMSR).
247	*/
248	typedef enum SVMMSREXITWRITE
249	{
250	/** Writing to this MSR causes a \#VMEXIT. */
251	SVMMSREXIT_INTERCEPT_WRITE = 0xd,
252	/** Writing to this MSR does not cause a \#VMEXIT. */
253	SVMMSREXIT_PASSTHRU_WRITE
254	} SVMMSREXITWRITE;
255
256	/**
257	* SVM \#VMEXIT handler.
258	*
259	* @returns VBox status code.
260	* @param pVCpu The cross context virtual CPU structure.
261	* @param pMixedCtx Pointer to the guest-CPU context.
262	* @param pSvmTransient Pointer to the SVM-transient structure.
263	*/
264	typedef int FNSVMEXITHANDLER(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
265
266
267	/*********************************************************************************************************************************
268	* Internal Functions *
269	*********************************************************************************************************************************/
270	static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, unsigned uMsr, SVMMSREXITREAD enmRead, SVMMSREXITWRITE enmWrite);
271	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu);
272	static void hmR0SvmLeave(PVMCPU pVCpu);
273
274	/** @name \#VMEXIT handlers.
275	* @{
276	*/
277	static FNSVMEXITHANDLER hmR0SvmExitIntr;
278	static FNSVMEXITHANDLER hmR0SvmExitWbinvd;
279	static FNSVMEXITHANDLER hmR0SvmExitInvd;
280	static FNSVMEXITHANDLER hmR0SvmExitCpuid;
281	static FNSVMEXITHANDLER hmR0SvmExitRdtsc;
282	static FNSVMEXITHANDLER hmR0SvmExitRdtscp;
283	static FNSVMEXITHANDLER hmR0SvmExitRdpmc;
284	static FNSVMEXITHANDLER hmR0SvmExitInvlpg;
285	static FNSVMEXITHANDLER hmR0SvmExitHlt;
286	static FNSVMEXITHANDLER hmR0SvmExitMonitor;
287	static FNSVMEXITHANDLER hmR0SvmExitMwait;
288	static FNSVMEXITHANDLER hmR0SvmExitShutdown;
289	static FNSVMEXITHANDLER hmR0SvmExitReadCRx;
290	static FNSVMEXITHANDLER hmR0SvmExitWriteCRx;
291	static FNSVMEXITHANDLER hmR0SvmExitSetPendingXcptUD;
292	static FNSVMEXITHANDLER hmR0SvmExitMsr;
293	static FNSVMEXITHANDLER hmR0SvmExitReadDRx;
294	static FNSVMEXITHANDLER hmR0SvmExitWriteDRx;
295	static FNSVMEXITHANDLER hmR0SvmExitXsetbv;
296	static FNSVMEXITHANDLER hmR0SvmExitIOInstr;
297	static FNSVMEXITHANDLER hmR0SvmExitNestedPF;
298	static FNSVMEXITHANDLER hmR0SvmExitVIntr;
299	static FNSVMEXITHANDLER hmR0SvmExitTaskSwitch;
300	static FNSVMEXITHANDLER hmR0SvmExitVmmCall;
301	static FNSVMEXITHANDLER hmR0SvmExitPause;
302	static FNSVMEXITHANDLER hmR0SvmExitIret;
303	static FNSVMEXITHANDLER hmR0SvmExitXcptPF;
304	static FNSVMEXITHANDLER hmR0SvmExitXcptNM;
305	static FNSVMEXITHANDLER hmR0SvmExitXcptUD;
306	static FNSVMEXITHANDLER hmR0SvmExitXcptMF;
307	static FNSVMEXITHANDLER hmR0SvmExitXcptDB;
308	static FNSVMEXITHANDLER hmR0SvmExitXcptAC;
309	static FNSVMEXITHANDLER hmR0SvmExitXcptBP;
310	/** @} */
311
312	DECLINLINE(int) hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient);
313
314
315	/*********************************************************************************************************************************
316	* Global Variables *
317	*********************************************************************************************************************************/
318	/** Ring-0 memory object for the IO bitmap. */
319	RTR0MEMOBJ g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
320	/** Physical address of the IO bitmap. */
321	RTHCPHYS g_HCPhysIOBitmap = 0;
322	/** Virtual address of the IO bitmap. */
323	R0PTRTYPE(void *) g_pvIOBitmap = NULL;
324
325
326	/**
327	* Sets up and activates AMD-V on the current CPU.
328	*
329	* @returns VBox status code.
330	* @param pCpu Pointer to the CPU info struct.
331	* @param pVM The cross context VM structure. Can be
332	* NULL after a resume!
333	* @param pvCpuPage Pointer to the global CPU page.
334	* @param HCPhysCpuPage Physical address of the global CPU page.
335	* @param fEnabledByHost Whether the host OS has already initialized AMD-V.
336	* @param pvArg Unused on AMD-V.
337	*/
338	VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBALCPUINFO pCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
339	void *pvArg)
340	{
341	Assert(!fEnabledByHost);
342	Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
343	Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
344	Assert(pvCpuPage); NOREF(pvCpuPage);
345	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
346
347	NOREF(pvArg);
348	NOREF(fEnabledByHost);
349
350	/* Paranoid: Disable interrupt as, in theory, interrupt handlers might mess with EFER. */
351	RTCCUINTREG fEFlags = ASMIntDisableFlags();
352
353	/*
354	* We must turn on AMD-V and setup the host state physical address, as those MSRs are per CPU.
355	*/
356	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
357	if (u64HostEfer & MSR_K6_EFER_SVME)
358	{
359	/* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE is active, then we blindly use AMD-V. */
360	if ( pVM
361	&& pVM->hm.s.svm.fIgnoreInUseError)
362	{
363	pCpu->fIgnoreAMDVInUseError = true;
364	}
365
366	if (!pCpu->fIgnoreAMDVInUseError)
367	{
368	ASMSetFlags(fEFlags);
369	return VERR_SVM_IN_USE;
370	}
371	}
372
373	/* Turn on AMD-V in the EFER MSR. */
374	ASMWrMsr(MSR_K6_EFER, u64HostEfer \| MSR_K6_EFER_SVME);
375
376	/* Write the physical page address where the CPU will store the host state while executing the VM. */
377	ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
378
379	/* Restore interrupts. */
380	ASMSetFlags(fEFlags);
381
382	/*
383	* Theoretically, other hypervisors may have used ASIDs, ideally we should flush all non-zero ASIDs
384	* when enabling SVM. AMD doesn't have an SVM instruction to flush all ASIDs (flushing is done
385	* upon VMRUN). Therefore, just set the fFlushAsidBeforeUse flag which instructs hmR0SvmSetupTLB()
386	* to flush the TLB with before using a new ASID.
387	*/
388	pCpu->fFlushAsidBeforeUse = true;
389
390	/*
391	* Ensure each VCPU scheduled on this CPU gets a new VPID on resume. See @bugref{6255}.
392	*/
393	++pCpu->cTlbFlushes;
394
395	return VINF_SUCCESS;
396	}
397
398
399	/**
400	* Deactivates AMD-V on the current CPU.
401	*
402	* @returns VBox status code.
403	* @param pCpu Pointer to the CPU info struct.
404	* @param pvCpuPage Pointer to the global CPU page.
405	* @param HCPhysCpuPage Physical address of the global CPU page.
406	*/
407	VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBALCPUINFO pCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
408	{
409	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
410	AssertReturn( HCPhysCpuPage
411	&& HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
412	AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
413	NOREF(pCpu);
414
415	/* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with EFER. */
416	RTCCUINTREG fEFlags = ASMIntDisableFlags();
417
418	/* Turn off AMD-V in the EFER MSR. */
419	uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
420	ASMWrMsr(MSR_K6_EFER, u64HostEfer & ~MSR_K6_EFER_SVME);
421
422	/* Invalidate host state physical address. */
423	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
424
425	/* Restore interrupts. */
426	ASMSetFlags(fEFlags);
427
428	return VINF_SUCCESS;
429	}
430
431
432	/**
433	* Does global AMD-V initialization (called during module initialization).
434	*
435	* @returns VBox status code.
436	*/
437	VMMR0DECL(int) SVMR0GlobalInit(void)
438	{
439	/*
440	* Allocate 12 KB for the IO bitmap. Since this is non-optional and we always intercept all IO accesses, it's done
441	* once globally here instead of per-VM.
442	*/
443	Assert(g_hMemObjIOBitmap == NIL_RTR0MEMOBJ);
444	int rc = RTR0MemObjAllocCont(&g_hMemObjIOBitmap, 3 << PAGE_SHIFT, false /* fExecutable */);
445	if (RT_FAILURE(rc))
446	return rc;
447
448	g_pvIOBitmap = RTR0MemObjAddress(g_hMemObjIOBitmap);
449	g_HCPhysIOBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjIOBitmap, 0 /* iPage */);
450
451	/* Set all bits to intercept all IO accesses. */
452	ASMMemFill32(g_pvIOBitmap, 3 << PAGE_SHIFT, UINT32_C(0xffffffff));
453	return VINF_SUCCESS;
454	}
455
456
457	/**
458	* Does global AMD-V termination (called during module termination).
459	*/
460	VMMR0DECL(void) SVMR0GlobalTerm(void)
461	{
462	if (g_hMemObjIOBitmap != NIL_RTR0MEMOBJ)
463	{
464	RTR0MemObjFree(g_hMemObjIOBitmap, true /* fFreeMappings */);
465	g_pvIOBitmap = NULL;
466	g_HCPhysIOBitmap = 0;
467	g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
468	}
469	}
470
471
472	/**
473	* Frees any allocated per-VCPU structures for a VM.
474	*
475	* @param pVM The cross context VM structure.
476	*/
477	DECLINLINE(void) hmR0SvmFreeStructs(PVM pVM)
478	{
479	for (uint32_t i = 0; i < pVM->cCpus; i++)
480	{
481	PVMCPU pVCpu = &pVM->aCpus[i];
482	AssertPtr(pVCpu);
483
484	if (pVCpu->hm.s.svm.hMemObjVmcbHost != NIL_RTR0MEMOBJ)
485	{
486	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcbHost, false);
487	pVCpu->hm.s.svm.pvVmcbHost = 0;
488	pVCpu->hm.s.svm.HCPhysVmcbHost = 0;
489	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
490	}
491
492	if (pVCpu->hm.s.svm.hMemObjVmcb != NIL_RTR0MEMOBJ)
493	{
494	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcb, false);
495	pVCpu->hm.s.svm.pvVmcb = 0;
496	pVCpu->hm.s.svm.HCPhysVmcb = 0;
497	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
498	}
499
500	if (pVCpu->hm.s.svm.hMemObjMsrBitmap != NIL_RTR0MEMOBJ)
501	{
502	RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjMsrBitmap, false);
503	pVCpu->hm.s.svm.pvMsrBitmap = 0;
504	pVCpu->hm.s.svm.HCPhysMsrBitmap = 0;
505	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
506	}
507	}
508	}
509
510
511	/**
512	* Does per-VM AMD-V initialization.
513	*
514	* @returns VBox status code.
515	* @param pVM The cross context VM structure.
516	*/
517	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
518	{
519	int rc = VERR_INTERNAL_ERROR_5;
520
521	/*
522	* Check for an AMD CPU erratum which requires us to flush the TLB before every world-switch.
523	*/
524	uint32_t u32Family;
525	uint32_t u32Model;
526	uint32_t u32Stepping;
527	if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping))
528	{
529	Log4(("SVMR0InitVM: AMD cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping));
530	pVM->hm.s.svm.fAlwaysFlushTLB = true;
531	}
532
533	/*
534	* Initialize the R0 memory objects up-front so we can properly cleanup on allocation failures.
535	*/
536	for (VMCPUID i = 0; i < pVM->cCpus; i++)
537	{
538	PVMCPU pVCpu = &pVM->aCpus[i];
539	pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
540	pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
541	pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
542	}
543
544	for (VMCPUID i = 0; i < pVM->cCpus; i++)
545	{
546	PVMCPU pVCpu = &pVM->aCpus[i];
547
548	/*
549	* Allocate one page for the host-context VM control block (VMCB). This is used for additional host-state (such as
550	* FS, GS, Kernel GS Base, etc.) apart from the host-state save area specified in MSR_K8_VM_HSAVE_PA.
551	*/
552	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcbHost, 1 << PAGE_SHIFT, false /* fExecutable */);
553	if (RT_FAILURE(rc))
554	goto failure_cleanup;
555
556	pVCpu->hm.s.svm.pvVmcbHost = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcbHost);
557	pVCpu->hm.s.svm.HCPhysVmcbHost = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcbHost, 0 /* iPage */);
558	Assert(pVCpu->hm.s.svm.HCPhysVmcbHost < _4G);
559	ASMMemZeroPage(pVCpu->hm.s.svm.pvVmcbHost);
560
561	/*
562	* Allocate one page for the guest-state VMCB.
563	*/
564	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcb, 1 << PAGE_SHIFT, false /* fExecutable */);
565	if (RT_FAILURE(rc))
566	goto failure_cleanup;
567
568	pVCpu->hm.s.svm.pvVmcb = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcb);
569	pVCpu->hm.s.svm.HCPhysVmcb = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcb, 0 /* iPage */);
570	Assert(pVCpu->hm.s.svm.HCPhysVmcb < _4G);
571	ASMMemZeroPage(pVCpu->hm.s.svm.pvVmcb);
572
573	/*
574	* Allocate two pages (8 KB) for the MSR permission bitmap. There doesn't seem to be a way to convince
575	* SVM to not require one.
576	*/
577	rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjMsrBitmap, 2 << PAGE_SHIFT, false /* fExecutable */);
578	if (RT_FAILURE(rc))
579	goto failure_cleanup;
580
581	pVCpu->hm.s.svm.pvMsrBitmap = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjMsrBitmap);
582	pVCpu->hm.s.svm.HCPhysMsrBitmap = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjMsrBitmap, 0 /* iPage */);
583	/* Set all bits to intercept all MSR accesses (changed later on). */
584	ASMMemFill32(pVCpu->hm.s.svm.pvMsrBitmap, 2 << PAGE_SHIFT, UINT32_C(0xffffffff));
585	}
586
587	return VINF_SUCCESS;
588
589	failure_cleanup:
590	hmR0SvmFreeStructs(pVM);
591	return rc;
592	}
593
594
595	/**
596	* Does per-VM AMD-V termination.
597	*
598	* @returns VBox status code.
599	* @param pVM The cross context VM structure.
600	*/
601	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
602	{
603	hmR0SvmFreeStructs(pVM);
604	return VINF_SUCCESS;
605	}
606
607
608	/**
609	* Sets the permission bits for the specified MSR in the MSRPM.
610	*
611	* @param pVCpu The cross context virtual CPU structure.
612	* @param uMsr The MSR for which the access permissions are being set.
613	* @param enmRead MSR read permissions.
614	* @param enmWrite MSR write permissions.
615	*/
616	static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, unsigned uMsr, SVMMSREXITREAD enmRead, SVMMSREXITWRITE enmWrite)
617	{
618	unsigned uBit;
619	uint8_t pbMsrBitmap = (uint8_t )pVCpu->hm.s.svm.pvMsrBitmap;
620
621	/*
622	* Layout:
623	* Byte offset MSR range
624	* 0x000 - 0x7ff 0x00000000 - 0x00001fff
625	* 0x800 - 0xfff 0xc0000000 - 0xc0001fff
626	* 0x1000 - 0x17ff 0xc0010000 - 0xc0011fff
627	* 0x1800 - 0x1fff Reserved
628	*/
629	if (uMsr <= 0x00001FFF)
630	{
631	/* Pentium-compatible MSRs. */
632	uBit = uMsr * 2;
633	}
634	else if ( uMsr >= 0xC0000000
635	&& uMsr <= 0xC0001FFF)
636	{
637	/* AMD Sixth Generation x86 Processor MSRs. */
638	uBit = (uMsr - 0xC0000000) * 2;
639	pbMsrBitmap += 0x800;
640	}
641	else if ( uMsr >= 0xC0010000
642	&& uMsr <= 0xC0011FFF)
643	{
644	/* AMD Seventh and Eighth Generation Processor MSRs. */
645	uBit = (uMsr - 0xC0001000) * 2;
646	pbMsrBitmap += 0x1000;
647	}
648	else
649	{
650	AssertFailed();
651	return;
652	}
653
654	Assert(uBit < 0x3fff /* 16 * 1024 - 1 */);
655	if (enmRead == SVMMSREXIT_INTERCEPT_READ)
656	ASMBitSet(pbMsrBitmap, uBit);
657	else
658	ASMBitClear(pbMsrBitmap, uBit);
659
660	if (enmWrite == SVMMSREXIT_INTERCEPT_WRITE)
661	ASMBitSet(pbMsrBitmap, uBit + 1);
662	else
663	ASMBitClear(pbMsrBitmap, uBit + 1);
664
665	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
666	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
667	}
668
669
670	/**
671	* Sets up AMD-V for the specified VM.
672	* This function is only called once per-VM during initalization.
673	*
674	* @returns VBox status code.
675	* @param pVM The cross context VM structure.
676	*/
677	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
678	{
679	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
680	AssertReturn(pVM, VERR_INVALID_PARAMETER);
681	Assert(pVM->hm.s.svm.fSupported);
682
683	bool const fPauseFilter = RT_BOOL(pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER);
684	bool const fPauseFilterThreshold = RT_BOOL(pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER_THRESHOLD);
685	bool const fUsePauseFilter = fPauseFilter && pVM->hm.s.svm.cPauseFilter && pVM->hm.s.svm.cPauseFilterThresholdTicks;
686
687	for (VMCPUID i = 0; i < pVM->cCpus; i++)
688	{
689	PVMCPU pVCpu = &pVM->aCpus[i];
690	PSVMVMCB pVmcb = (PSVMVMCB)pVM->aCpus[i].hm.s.svm.pvVmcb;
691
692	AssertMsgReturn(pVmcb, ("Invalid pVmcb for vcpu[%u]\n", i), VERR_SVM_INVALID_PVMCB);
693
694	/* Initialize the #VMEXIT history array with end-of-array markers (UINT16_MAX). */
695	Assert(!pVCpu->hm.s.idxExitHistoryFree);
696	HMCPU_EXIT_HISTORY_RESET(pVCpu);
697
698	/* Always trap #AC for reasons of security. */
699	pVmcb->ctrl.u32InterceptException \|= RT_BIT_32(X86_XCPT_AC);
700
701	/* Always trap #DB for reasons of security. */
702	pVmcb->ctrl.u32InterceptException \|= RT_BIT_32(X86_XCPT_DB);
703
704	/* Trap exceptions unconditionally (debug purposes). */
705	#ifdef HMSVM_ALWAYS_TRAP_PF
706	pVmcb->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_PF);
707	#endif
708	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
709	/* If you add any exceptions here, make sure to update hmR0SvmHandleExit(). */
710	pVmcb->ctrl.u32InterceptException \|= 0
711	\| RT_BIT(X86_XCPT_BP)
712	\| RT_BIT(X86_XCPT_DE)
713	\| RT_BIT(X86_XCPT_NM)
714	\| RT_BIT(X86_XCPT_UD)
715	\| RT_BIT(X86_XCPT_NP)
716	\| RT_BIT(X86_XCPT_SS)
717	\| RT_BIT(X86_XCPT_GP)
718	\| RT_BIT(X86_XCPT_PF)
719	\| RT_BIT(X86_XCPT_MF)
720	;
721	#endif
722
723	/* Set up unconditional intercepts and conditions. */
724	pVmcb->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR /* External interrupt causes a #VMEXIT. */
725	\| SVM_CTRL1_INTERCEPT_NMI /* Non-maskable interrupts causes a #VMEXIT. */
726	\| SVM_CTRL1_INTERCEPT_INIT /* INIT signal causes a #VMEXIT. */
727	\| SVM_CTRL1_INTERCEPT_RDPMC /* RDPMC causes a #VMEXIT. */
728	\| SVM_CTRL1_INTERCEPT_CPUID /* CPUID causes a #VMEXIT. */
729	\| SVM_CTRL1_INTERCEPT_RSM /* RSM causes a #VMEXIT. */
730	\| SVM_CTRL1_INTERCEPT_HLT /* HLT causes a #VMEXIT. */
731	\| SVM_CTRL1_INTERCEPT_INOUT_BITMAP /* Use the IOPM to cause IOIO #VMEXITs. */
732	\| SVM_CTRL1_INTERCEPT_MSR_SHADOW /* MSR access not covered by MSRPM causes a #VMEXIT.*/
733	\| SVM_CTRL1_INTERCEPT_INVLPGA /* INVLPGA causes a #VMEXIT. */
734	\| SVM_CTRL1_INTERCEPT_SHUTDOWN /* Shutdown events causes a #VMEXIT. */
735	\| SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Intercept "freezing" during legacy FPU handling. */
736
737	pVmcb->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* VMRUN causes a #VMEXIT. */
738	\| SVM_CTRL2_INTERCEPT_VMMCALL /* VMMCALL causes a #VMEXIT. */
739	\| SVM_CTRL2_INTERCEPT_VMLOAD /* VMLOAD causes a #VMEXIT. */
740	\| SVM_CTRL2_INTERCEPT_VMSAVE /* VMSAVE causes a #VMEXIT. */
741	\| SVM_CTRL2_INTERCEPT_STGI /* STGI causes a #VMEXIT. */
742	\| SVM_CTRL2_INTERCEPT_CLGI /* CLGI causes a #VMEXIT. */
743	\| SVM_CTRL2_INTERCEPT_SKINIT /* SKINIT causes a #VMEXIT. */
744	\| SVM_CTRL2_INTERCEPT_WBINVD /* WBINVD causes a #VMEXIT. */
745	\| SVM_CTRL2_INTERCEPT_MONITOR /* MONITOR causes a #VMEXIT. */
746	\| SVM_CTRL2_INTERCEPT_MWAIT /* MWAIT causes a #VMEXIT. */
747	\| SVM_CTRL2_INTERCEPT_XSETBV; /* XSETBV causes a #VMEXIT. */
748
749	/* CR0, CR4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
750	pVmcb->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(4);
751
752	/* CR0, CR4 writes must be intercepted for the same reasons as above. */
753	pVmcb->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(4);
754
755	/* Intercept all DRx reads and writes by default. Changed later on. */
756	pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
757	pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
758
759	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
760	pVmcb->ctrl.IntCtrl.n.u1VIrqMasking = 1;
761
762	/* Ignore the priority in the TPR. This is necessary for delivering PIC style (ExtInt) interrupts and we currently
763	deliver both PIC and APIC interrupts alike. See hmR0SvmInjectPendingEvent() */
764	pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
765
766	/* Set IO and MSR bitmap permission bitmap physical addresses. */
767	pVmcb->ctrl.u64IOPMPhysAddr = g_HCPhysIOBitmap;
768	pVmcb->ctrl.u64MSRPMPhysAddr = pVCpu->hm.s.svm.HCPhysMsrBitmap;
769
770	/* No LBR virtualization. */
771	pVmcb->ctrl.u64LBRVirt = 0;
772
773	/* Initially set all VMCB clean bits to 0 indicating that everything should be loaded from the VMCB in memory. */
774	pVmcb->ctrl.u64VmcbCleanBits = 0;
775
776	/* The host ASID MBZ, for the guest start with 1. */
777	pVmcb->ctrl.TLBCtrl.n.u32ASID = 1;
778
779	/*
780	* Setup the PAT MSR (applicable for Nested Paging only).
781	* The default value should be 0x0007040600070406ULL, but we want to treat all guest memory as WB,
782	* so choose type 6 for all PAT slots.
783	*/
784	pVmcb->guest.u64GPAT = UINT64_C(0x0006060606060606);
785
786	/* Setup Nested Paging. This doesn't change throughout the execution time of the VM. */
787	pVmcb->ctrl.NestedPaging.n.u1NestedPaging = pVM->hm.s.fNestedPaging;
788
789	/* Without Nested Paging, we need additionally intercepts. */
790	if (!pVM->hm.s.fNestedPaging)
791	{
792	/* CR3 reads/writes must be intercepted; our shadow values differ from the guest values. */
793	pVmcb->ctrl.u16InterceptRdCRx \|= RT_BIT(3);
794	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(3);
795
796	/* Intercept INVLPG and task switches (may change CR3, EFLAGS, LDT). */
797	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_INVLPG
798	\| SVM_CTRL1_INTERCEPT_TASK_SWITCH;
799
800	/* Page faults must be intercepted to implement shadow paging. */
801	pVmcb->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_PF);
802	}
803
804	#ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
805	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_TASK_SWITCH;
806	#endif
807
808	/* Apply the exceptions intercepts needed by the GIM provider. */
809	if (pVCpu->hm.s.fGIMTrapXcptUD)
810	pVmcb->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_UD);
811
812	/* Setup Pause Filter for guest pause-loop (spinlock) exiting. */
813	if (fUsePauseFilter)
814	{
815	pVmcb->ctrl.u16PauseFilterCount = pVM->hm.s.svm.cPauseFilter;
816	if (fPauseFilterThreshold)
817	pVmcb->ctrl.u16PauseFilterThreshold = pVM->hm.s.svm.cPauseFilterThresholdTicks;
818	}
819
820	/*
821	* The following MSRs are saved/restored automatically during the world-switch.
822	* Don't intercept guest read/write accesses to these MSRs.
823	*/
824	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
825	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_CSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
826	hmR0SvmSetMsrPermission(pVCpu, MSR_K6_STAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
827	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_SF_MASK, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
828	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_FS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
829	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
830	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_KERNEL_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
831	hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_CS, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
832	hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_ESP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
833	hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_EIP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
834	}
835
836	return VINF_SUCCESS;
837	}
838
839
840	/**
841	* Invalidates a guest page by guest virtual address.
842	*
843	* @returns VBox status code.
844	* @param pVM The cross context VM structure.
845	* @param pVCpu The cross context virtual CPU structure.
846	* @param GCVirt Guest virtual address of the page to invalidate.
847	*/
848	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
849	{
850	AssertReturn(pVM, VERR_INVALID_PARAMETER);
851	Assert(pVM->hm.s.svm.fSupported);
852
853	bool fFlushPending = pVM->hm.s.svm.fAlwaysFlushTLB \|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_FLUSH);
854
855	/* Skip it if a TLB flush is already pending. */
856	if (!fFlushPending)
857	{
858	Log4(("SVMR0InvalidatePage %RGv\n", GCVirt));
859
860	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
861	AssertMsgReturn(pVmcb, ("Invalid pVmcb!\n"), VERR_SVM_INVALID_PVMCB);
862
863	#if HC_ARCH_BITS == 32
864	/* If we get a flush in 64-bit guest mode, then force a full TLB flush. INVLPGA takes only 32-bit addresses. */
865	if (CPUMIsGuestInLongMode(pVCpu))
866	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
867	else
868	#endif
869	{
870	SVMR0InvlpgA(GCVirt, pVmcb->ctrl.TLBCtrl.n.u32ASID);
871	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
872	}
873	}
874	return VINF_SUCCESS;
875	}
876
877
878	/**
879	* Flushes the appropriate tagged-TLB entries.
880	*
881	* @param pVCpu The cross context virtual CPU structure.
882	*/
883	static void hmR0SvmFlushTaggedTlb(PVMCPU pVCpu)
884	{
885	PVM pVM = pVCpu->CTX_SUFF(pVM);
886	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
887	PHMGLOBALCPUINFO pCpu = HMR0GetCurrentCpu();
888
889	/*
890	* Force a TLB flush for the first world switch if the current CPU differs from the one we ran on last.
891	* This can happen both for start & resume due to long jumps back to ring-3.
892	* If the TLB flush count changed, another VM (VCPU rather) has hit the ASID limit while flushing the TLB,
893	* so we cannot reuse the ASIDs without flushing.
894	*/
895	bool fNewAsid = false;
896	Assert(pCpu->idCpu != NIL_RTCPUID);
897	if ( pVCpu->hm.s.idLastCpu != pCpu->idCpu
898	\|\| pVCpu->hm.s.cTlbFlushes != pCpu->cTlbFlushes)
899	{
900	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
901	pVCpu->hm.s.fForceTLBFlush = true;
902	fNewAsid = true;
903	}
904
905	/* Set TLB flush state as checked until we return from the world switch. */
906	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true);
907
908	/* Check for explicit TLB flushes. */
909	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
910	{
911	pVCpu->hm.s.fForceTLBFlush = true;
912	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
913	}
914
915	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_NOTHING;
916
917	if (pVM->hm.s.svm.fAlwaysFlushTLB)
918	{
919	/*
920	* This is the AMD erratum 170. We need to flush the entire TLB for each world switch. Sad.
921	*/
922	pCpu->uCurrentAsid = 1;
923	pVCpu->hm.s.uCurrentAsid = 1;
924	pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
925	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
926
927	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
928	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
929
930	/* Keep track of last CPU ID even when flushing all the time. */
931	if (fNewAsid)
932	pVCpu->hm.s.idLastCpu = pCpu->idCpu;
933	}
934	else if (pVCpu->hm.s.fForceTLBFlush)
935	{
936	/* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
937	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
938
939	if (fNewAsid)
940	{
941	++pCpu->uCurrentAsid;
942	bool fHitASIDLimit = false;
943	if (pCpu->uCurrentAsid >= pVM->hm.s.uMaxAsid)
944	{
945	pCpu->uCurrentAsid = 1; /* Wraparound at 1; host uses 0 */
946	pCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new VPID. */
947	fHitASIDLimit = true;
948
949	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
950	{
951	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
952	pCpu->fFlushAsidBeforeUse = true;
953	}
954	else
955	{
956	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
957	pCpu->fFlushAsidBeforeUse = false;
958	}
959	}
960
961	if ( !fHitASIDLimit
962	&& pCpu->fFlushAsidBeforeUse)
963	{
964	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
965	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
966	else
967	{
968	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
969	pCpu->fFlushAsidBeforeUse = false;
970	}
971	}
972
973	pVCpu->hm.s.uCurrentAsid = pCpu->uCurrentAsid;
974	pVCpu->hm.s.idLastCpu = pCpu->idCpu;
975	pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
976	}
977	else
978	{
979	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
980	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
981	else
982	pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
983	}
984
985	pVCpu->hm.s.fForceTLBFlush = false;
986	}
987
988	/* Update VMCB with the ASID. */
989	if (pVmcb->ctrl.TLBCtrl.n.u32ASID != pVCpu->hm.s.uCurrentAsid)
990	{
991	pVmcb->ctrl.TLBCtrl.n.u32ASID = pVCpu->hm.s.uCurrentAsid;
992	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_ASID;
993	}
994
995	AssertMsg(pVCpu->hm.s.idLastCpu == pCpu->idCpu,
996	("vcpu idLastCpu=%u pcpu idCpu=%u\n", pVCpu->hm.s.idLastCpu, pCpu->idCpu));
997	AssertMsg(pVCpu->hm.s.cTlbFlushes == pCpu->cTlbFlushes,
998	("Flush count mismatch for cpu %u (%u vs %u)\n", pCpu->idCpu, pVCpu->hm.s.cTlbFlushes, pCpu->cTlbFlushes));
999	AssertMsg(pCpu->uCurrentAsid >= 1 && pCpu->uCurrentAsid < pVM->hm.s.uMaxAsid,
1000	("cpu%d uCurrentAsid = %x\n", pCpu->idCpu, pCpu->uCurrentAsid));
1001	AssertMsg(pVCpu->hm.s.uCurrentAsid >= 1 && pVCpu->hm.s.uCurrentAsid < pVM->hm.s.uMaxAsid,
1002	("cpu%d VM uCurrentAsid = %x\n", pCpu->idCpu, pVCpu->hm.s.uCurrentAsid));
1003
1004	#ifdef VBOX_WITH_STATISTICS
1005	if (pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_NOTHING)
1006	STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch);
1007	else if ( pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT
1008	\|\| pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT_RETAIN_GLOBALS)
1009	{
1010	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
1011	}
1012	else
1013	{
1014	Assert(pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_ENTIRE);
1015	STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushEntire);
1016	}
1017	#endif
1018	}
1019
1020
1021	/** @name 64-bit guest on 32-bit host OS helper functions.
1022	*
1023	* The host CPU is still 64-bit capable but the host OS is running in 32-bit
1024	* mode (code segment, paging). These wrappers/helpers perform the necessary
1025	* bits for the 32->64 switcher.
1026	*
1027	* @{ */
1028	#if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS)
1029	/**
1030	* Prepares for and executes VMRUN (64-bit guests on a 32-bit host).
1031	*
1032	* @returns VBox status code.
1033	* @param HCPhysVmcbHost Physical address of host VMCB.
1034	* @param HCPhysVmcb Physical address of the VMCB.
1035	* @param pCtx Pointer to the guest-CPU context.
1036	* @param pVM The cross context VM structure.
1037	* @param pVCpu The cross context virtual CPU structure.
1038	*/
1039	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS HCPhysVmcbHost, RTHCPHYS HCPhysVmcb, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
1040	{
1041	uint32_t aParam[8];
1042	aParam[0] = (uint32_t)(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Lo. */
1043	aParam[1] = (uint32_t)(HCPhysVmcbHost >> 32); /* Param 1: HCPhysVmcbHost - Hi. */
1044	aParam[2] = (uint32_t)(HCPhysVmcb); /* Param 2: HCPhysVmcb - Lo. */
1045	aParam[3] = (uint32_t)(HCPhysVmcb >> 32); /* Param 2: HCPhysVmcb - Hi. */
1046	aParam[4] = VM_RC_ADDR(pVM, pVM);
1047	aParam[5] = 0;
1048	aParam[6] = VM_RC_ADDR(pVM, pVCpu);
1049	aParam[7] = 0;
1050
1051	return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, HM64ON32OP_SVMRCVMRun64, RT_ELEMENTS(aParam), &aParam[0]);
1052	}
1053
1054
1055	/**
1056	* Executes the specified VMRUN handler in 64-bit mode.
1057	*
1058	* @returns VBox status code.
1059	* @param pVM The cross context VM structure.
1060	* @param pVCpu The cross context virtual CPU structure.
1061	* @param pCtx Pointer to the guest-CPU context.
1062	* @param enmOp The operation to perform.
1063	* @param cParams Number of parameters.
1064	* @param paParam Array of 32-bit parameters.
1065	*/
1066	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, HM64ON32OP enmOp,
1067	uint32_t cParams, uint32_t *paParam)
1068	{
1069	AssertReturn(pVM->hm.s.pfnHost32ToGuest64R0, VERR_HM_NO_32_TO_64_SWITCHER);
1070	Assert(enmOp > HM64ON32OP_INVALID && enmOp < HM64ON32OP_END);
1071
1072	NOREF(pCtx);
1073
1074	/* Disable interrupts. */
1075	RTHCUINTREG uOldEFlags = ASMIntDisableFlags();
1076
1077	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1078	RTCPUID idHostCpu = RTMpCpuId();
1079	CPUMR0SetLApic(pVCpu, idHostCpu);
1080	#endif
1081
1082	CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
1083	CPUMSetHyperEIP(pVCpu, enmOp);
1084	for (int i = (int)cParams - 1; i >= 0; i--)
1085	CPUMPushHyper(pVCpu, paParam[i]);
1086
1087	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatWorldSwitch3264, z);
1088	/* Call the switcher. */
1089	int rc = pVM->hm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
1090	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatWorldSwitch3264, z);
1091
1092	/* Restore interrupts. */
1093	ASMSetFlags(uOldEFlags);
1094	return rc;
1095	}
1096
1097	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */
1098	/** @} */
1099
1100
1101	/**
1102	* Adds an exception to the intercept exception bitmap in the VMCB and updates
1103	* the corresponding VMCB Clean bit.
1104	*
1105	* @param pVmcb Pointer to the VM control block.
1106	* @param u32Xcpt The value of the exception (X86_XCPT_*).
1107	*/
1108	DECLINLINE(void) hmR0SvmAddXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
1109	{
1110	if (!(pVmcb->ctrl.u32InterceptException & RT_BIT(u32Xcpt)))
1111	{
1112	pVmcb->ctrl.u32InterceptException \|= RT_BIT(u32Xcpt);
1113	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1114	}
1115	}
1116
1117
1118	/**
1119	* Removes an exception from the intercept-exception bitmap in the VMCB and
1120	* updates the corresponding VMCB Clean bit.
1121	*
1122	* @param pVmcb Pointer to the VM control block.
1123	* @param u32Xcpt The value of the exception (X86_XCPT_*).
1124	*/
1125	DECLINLINE(void) hmR0SvmRemoveXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
1126	{
1127	Assert(u32Xcpt != X86_XCPT_DB);
1128	Assert(u32Xcpt != X86_XCPT_AC);
1129	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
1130	if (pVmcb->ctrl.u32InterceptException & RT_BIT(u32Xcpt))
1131	{
1132	pVmcb->ctrl.u32InterceptException &= ~RT_BIT(u32Xcpt);
1133	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1134	}
1135	#endif
1136	}
1137
1138
1139	/**
1140	* Loads the guest CR0 control register into the guest-state area in the VMCB.
1141	* Although the guest CR0 is a separate field in the VMCB we have to consider
1142	* the FPU state itself which is shared between the host and the guest.
1143	*
1144	* @returns VBox status code.
1145	* @param pVCpu The cross context virtual CPU structure.
1146	* @param pVmcb Pointer to the VM control block.
1147	* @param pCtx Pointer to the guest-CPU context.
1148	*
1149	* @remarks No-long-jump zone!!!
1150	*/
1151	static void hmR0SvmLoadSharedCR0(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1152	{
1153	/*
1154	* Guest CR0.
1155	*/
1156	PVM pVM = pVCpu->CTX_SUFF(pVM);
1157	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
1158	{
1159	uint64_t u64GuestCR0 = pCtx->cr0;
1160
1161	/* Always enable caching. */
1162	u64GuestCR0 &= ~(X86_CR0_CD \| X86_CR0_NW);
1163
1164	/*
1165	* When Nested Paging is not available use shadow page tables and intercept #PFs (the latter done in SVMR0SetupVM()).
1166	*/
1167	if (!pVM->hm.s.fNestedPaging)
1168	{
1169	u64GuestCR0 \|= X86_CR0_PG; /* When Nested Paging is not available, use shadow page tables. */
1170	u64GuestCR0 \|= X86_CR0_WP; /* Guest CPL 0 writes to its read-only pages should cause a #PF #VMEXIT. */
1171	}
1172
1173	/*
1174	* Guest FPU bits.
1175	*/
1176	bool fInterceptNM = false;
1177	bool fInterceptMF = false;
1178	u64GuestCR0 \|= X86_CR0_NE; /* Use internal x87 FPU exceptions handling rather than external interrupts. */
1179	if (CPUMIsGuestFPUStateActive(pVCpu))
1180	{
1181	/* Catch floating point exceptions if we need to report them to the guest in a different way. */
1182	if (!(pCtx->cr0 & X86_CR0_NE))
1183	{
1184	Log4(("hmR0SvmLoadGuestControlRegs: Intercepting Guest CR0.MP Old-style FPU handling!!!\n"));
1185	fInterceptMF = true;
1186	}
1187	}
1188	else
1189	{
1190	fInterceptNM = true; /* Guest FPU inactive, #VMEXIT on #NM for lazy FPU loading. */
1191	u64GuestCR0 \|= X86_CR0_TS /* Guest can task switch quickly and do lazy FPU syncing. */
1192	\| X86_CR0_MP; /* FWAIT/WAIT should not ignore CR0.TS and should generate #NM. */
1193	}
1194
1195	/*
1196	* Update the exception intercept bitmap.
1197	*/
1198	if (fInterceptNM)
1199	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_NM);
1200	else
1201	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_NM);
1202
1203	if (fInterceptMF)
1204	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_MF);
1205	else
1206	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_MF);
1207
1208	pVmcb->guest.u64CR0 = u64GuestCR0;
1209	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1210	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR0);
1211	}
1212	}
1213
1214
1215	/**
1216	* Loads the guest control registers (CR2, CR3, CR4) into the VMCB.
1217	*
1218	* @returns VBox status code.
1219	* @param pVCpu The cross context virtual CPU structure.
1220	* @param pVmcb Pointer to the VM control block.
1221	* @param pCtx Pointer to the guest-CPU context.
1222	*
1223	* @remarks No-long-jump zone!!!
1224	*/
1225	static int hmR0SvmLoadGuestControlRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1226	{
1227	PVM pVM = pVCpu->CTX_SUFF(pVM);
1228
1229	/*
1230	* Guest CR2.
1231	*/
1232	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR2))
1233	{
1234	pVmcb->guest.u64CR2 = pCtx->cr2;
1235	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CR2;
1236	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR2);
1237	}
1238
1239	/*
1240	* Guest CR3.
1241	*/
1242	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR3))
1243	{
1244	if (pVM->hm.s.fNestedPaging)
1245	{
1246	PGMMODE enmShwPagingMode;
1247	#if HC_ARCH_BITS == 32
1248	if (CPUMIsGuestInLongModeEx(pCtx))
1249	enmShwPagingMode = PGMMODE_AMD64_NX;
1250	else
1251	#endif
1252	enmShwPagingMode = PGMGetHostMode(pVM);
1253
1254	pVmcb->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
1255	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
1256	Assert(pVmcb->ctrl.u64NestedPagingCR3);
1257	pVmcb->guest.u64CR3 = pCtx->cr3;
1258	}
1259	else
1260	pVmcb->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
1261
1262	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1263	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR3);
1264	}
1265
1266	/*
1267	* Guest CR4.
1268	* ASSUMES this is done everytime we get in from ring-3! (XCR0)
1269	*/
1270	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR4))
1271	{
1272	uint64_t u64GuestCR4 = pCtx->cr4;
1273	if (!pVM->hm.s.fNestedPaging)
1274	{
1275	switch (pVCpu->hm.s.enmShadowMode)
1276	{
1277	case PGMMODE_REAL:
1278	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
1279	AssertFailed();
1280	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1281
1282	case PGMMODE_32_BIT: /* 32-bit paging. */
1283	u64GuestCR4 &= ~X86_CR4_PAE;
1284	break;
1285
1286	case PGMMODE_PAE: /* PAE paging. */
1287	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
1288	/** Must use PAE paging as we could use physical memory > 4 GB */
1289	u64GuestCR4 \|= X86_CR4_PAE;
1290	break;
1291
1292	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
1293	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
1294	#ifdef VBOX_ENABLE_64_BITS_GUESTS
1295	break;
1296	#else
1297	AssertFailed();
1298	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1299	#endif
1300
1301	default: /* shut up gcc */
1302	AssertFailed();
1303	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1304	}
1305	}
1306
1307	pVmcb->guest.u64CR4 = u64GuestCR4;
1308	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1309
1310	/* Whether to save/load/restore XCR0 during world switch depends on CR4.OSXSAVE and host+guest XCR0. */
1311	pVCpu->hm.s.fLoadSaveGuestXcr0 = (u64GuestCR4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
1312
1313	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR4);
1314	}
1315
1316	return VINF_SUCCESS;
1317	}
1318
1319
1320	/**
1321	* Loads the guest segment registers into the VMCB.
1322	*
1323	* @returns VBox status code.
1324	* @param pVCpu The cross context virtual CPU structure.
1325	* @param pVmcb Pointer to the VM control block.
1326	* @param pCtx Pointer to the guest-CPU context.
1327	*
1328	* @remarks No-long-jump zone!!!
1329	*/
1330	static void hmR0SvmLoadGuestSegmentRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1331	{
1332	/* Guest Segment registers: CS, SS, DS, ES, FS, GS. */
1333	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS))
1334	{
1335	HMSVM_LOAD_SEG_REG(CS, cs);
1336	HMSVM_LOAD_SEG_REG(SS, ss);
1337	HMSVM_LOAD_SEG_REG(DS, ds);
1338	HMSVM_LOAD_SEG_REG(ES, es);
1339	HMSVM_LOAD_SEG_REG(FS, fs);
1340	HMSVM_LOAD_SEG_REG(GS, gs);
1341
1342	pVmcb->guest.u8CPL = pCtx->ss.Attr.n.u2Dpl;
1343	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
1344	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS);
1345	}
1346
1347	/* Guest TR. */
1348	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_TR))
1349	{
1350	HMSVM_LOAD_SEG_REG(TR, tr);
1351	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_TR);
1352	}
1353
1354	/* Guest LDTR. */
1355	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_LDTR))
1356	{
1357	HMSVM_LOAD_SEG_REG(LDTR, ldtr);
1358	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LDTR);
1359	}
1360
1361	/* Guest GDTR. */
1362	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_GDTR))
1363	{
1364	pVmcb->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
1365	pVmcb->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
1366	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1367	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_GDTR);
1368	}
1369
1370	/* Guest IDTR. */
1371	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_IDTR))
1372	{
1373	pVmcb->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
1374	pVmcb->guest.IDTR.u64Base = pCtx->idtr.pIdt;
1375	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
1376	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_IDTR);
1377	}
1378	}
1379
1380
1381	/**
1382	* Loads the guest MSRs into the VMCB.
1383	*
1384	* @param pVCpu The cross context virtual CPU structure.
1385	* @param pVmcb Pointer to the VM control block.
1386	* @param pCtx Pointer to the guest-CPU context.
1387	*
1388	* @remarks No-long-jump zone!!!
1389	*/
1390	static void hmR0SvmLoadGuestMsrs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1391	{
1392	/* Guest Sysenter MSRs. */
1393	pVmcb->guest.u64SysEnterCS = pCtx->SysEnter.cs;
1394	pVmcb->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
1395	pVmcb->guest.u64SysEnterESP = pCtx->SysEnter.esp;
1396
1397	/*
1398	* Guest EFER MSR.
1399	* AMD-V requires guest EFER.SVME to be set. Weird.
1400	* See AMD spec. 15.5.1 "Basic Operation" \| "Canonicalization and Consistency Checks".
1401	*/
1402	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_EFER_MSR))
1403	{
1404	pVmcb->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
1405	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1406	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
1407	}
1408
1409	/* 64-bit MSRs. */
1410	if (CPUMIsGuestInLongModeEx(pCtx))
1411	{
1412	pVmcb->guest.FS.u64Base = pCtx->fs.u64Base;
1413	pVmcb->guest.GS.u64Base = pCtx->gs.u64Base;
1414	}
1415	else
1416	{
1417	/* If the guest isn't in 64-bit mode, clear MSR_K6_LME bit from guest EFER otherwise AMD-V expects amd64 shadow paging. */
1418	if (pCtx->msrEFER & MSR_K6_EFER_LME)
1419	{
1420	pVmcb->guest.u64EFER &= ~MSR_K6_EFER_LME;
1421	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
1422	}
1423	}
1424
1425
1426	/** @todo The following are used in 64-bit only (SYSCALL/SYSRET) but they might
1427	* be writable in 32-bit mode. Clarify with AMD spec. */
1428	pVmcb->guest.u64STAR = pCtx->msrSTAR;
1429	pVmcb->guest.u64LSTAR = pCtx->msrLSTAR;
1430	pVmcb->guest.u64CSTAR = pCtx->msrCSTAR;
1431	pVmcb->guest.u64SFMASK = pCtx->msrSFMASK;
1432	pVmcb->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE;
1433	}
1434
1435
1436	/**
1437	* Loads the guest state into the VMCB and programs the necessary intercepts
1438	* accordingly.
1439	*
1440	* @param pVCpu The cross context virtual CPU structure.
1441	* @param pVmcb Pointer to the VM control block.
1442	* @param pCtx Pointer to the guest-CPU context.
1443	*
1444	* @remarks No-long-jump zone!!!
1445	* @remarks Requires EFLAGS to be up-to-date in the VMCB!
1446	*/
1447	static void hmR0SvmLoadSharedDebugState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1448	{
1449	if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
1450	return;
1451	Assert((pCtx->dr[6] & X86_DR6_RA1_MASK) == X86_DR6_RA1_MASK); Assert((pCtx->dr[6] & X86_DR6_RAZ_MASK) == 0);
1452	Assert((pCtx->dr[7] & X86_DR7_RA1_MASK) == X86_DR7_RA1_MASK); Assert((pCtx->dr[7] & X86_DR7_RAZ_MASK) == 0);
1453
1454	bool fInterceptMovDRx = false;
1455
1456	/*
1457	* Anyone single stepping on the host side? If so, we'll have to use the
1458	* trap flag in the guest EFLAGS since AMD-V doesn't have a trap flag on
1459	* the VMM level like the VT-x implementations does.
1460	*/
1461	bool const fStepping = pVCpu->hm.s.fSingleInstruction;
1462	if (fStepping)
1463	{
1464	pVCpu->hm.s.fClearTrapFlag = true;
1465	pVmcb->guest.u64RFlags \|= X86_EFL_TF;
1466	fInterceptMovDRx = true; /* Need clean DR6, no guest mess. */
1467	}
1468	else
1469	Assert(!DBGFIsStepping(pVCpu));
1470
1471	if ( fStepping
1472	\|\| (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
1473	{
1474	/*
1475	* Use the combined guest and host DRx values found in the hypervisor
1476	* register set because the debugger has breakpoints active or someone
1477	* is single stepping on the host side.
1478	*
1479	* Note! DBGF expects a clean DR6 state before executing guest code.
1480	*/
1481	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1482	if ( CPUMIsGuestInLongModeEx(pCtx)
1483	&& !CPUMIsHyperDebugStateActivePending(pVCpu))
1484	{
1485	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1486	Assert(!CPUMIsGuestDebugStateActivePending(pVCpu));
1487	Assert(CPUMIsHyperDebugStateActivePending(pVCpu));
1488	}
1489	else
1490	#endif
1491	if (!CPUMIsHyperDebugStateActive(pVCpu))
1492	{
1493	CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
1494	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
1495	Assert(CPUMIsHyperDebugStateActive(pVCpu));
1496	}
1497
1498	/* Update DR6 & DR7. (The other DRx values are handled by CPUM one way or the other.) */
1499	if ( pVmcb->guest.u64DR6 != X86_DR6_INIT_VAL
1500	\|\| pVmcb->guest.u64DR7 != CPUMGetHyperDR7(pVCpu))
1501	{
1502	pVmcb->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
1503	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
1504	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1505	pVCpu->hm.s.fUsingHyperDR7 = true;
1506	}
1507
1508	/** @todo If we cared, we could optimize to allow the guest to read registers
1509	* with the same values. */
1510	fInterceptMovDRx = true;
1511	Log5(("hmR0SvmLoadSharedDebugState: Loaded hyper DRx\n"));
1512	}
1513	else
1514	{
1515	/*
1516	* Update DR6, DR7 with the guest values if necessary.
1517	*/
1518	if ( pVmcb->guest.u64DR7 != pCtx->dr[7]
1519	\|\| pVmcb->guest.u64DR6 != pCtx->dr[6])
1520	{
1521	pVmcb->guest.u64DR7 = pCtx->dr[7];
1522	pVmcb->guest.u64DR6 = pCtx->dr[6];
1523	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
1524	pVCpu->hm.s.fUsingHyperDR7 = false;
1525	}
1526
1527	/*
1528	* If the guest has enabled debug registers, we need to load them prior to
1529	* executing guest code so they'll trigger at the right time.
1530	*/
1531	if (pCtx->dr[7] & (X86_DR7_ENABLED_MASK \| X86_DR7_GD)) /** @todo Why GD? */
1532	{
1533	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1534	if ( CPUMIsGuestInLongModeEx(pCtx)
1535	&& !CPUMIsGuestDebugStateActivePending(pVCpu))
1536	{
1537	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1538	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1539	Assert(!CPUMIsHyperDebugStateActivePending(pVCpu));
1540	Assert(CPUMIsGuestDebugStateActivePending(pVCpu));
1541	}
1542	else
1543	#endif
1544	if (!CPUMIsGuestDebugStateActive(pVCpu))
1545	{
1546	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
1547	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
1548	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
1549	Assert(CPUMIsGuestDebugStateActive(pVCpu));
1550	}
1551	Log5(("hmR0SvmLoadSharedDebugState: Loaded guest DRx\n"));
1552	}
1553	/*
1554	* If no debugging enabled, we'll lazy load DR0-3. We don't need to
1555	* intercept #DB as DR6 is updated in the VMCB.
1556	*
1557	* Note! If we cared and dared, we could skip intercepting \#DB here.
1558	* However, \#DB shouldn't be performance critical, so we'll play safe
1559	* and keep the code similar to the VT-x code and always intercept it.
1560	*/
1561	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
1562	else if ( !CPUMIsGuestDebugStateActivePending(pVCpu)
1563	&& !CPUMIsGuestDebugStateActive(pVCpu))
1564	#else
1565	else if (!CPUMIsGuestDebugStateActive(pVCpu))
1566	#endif
1567	{
1568	fInterceptMovDRx = true;
1569	}
1570	}
1571
1572	Assert(pVmcb->ctrl.u32InterceptException & RT_BIT_32(X86_XCPT_DB));
1573	if (fInterceptMovDRx)
1574	{
1575	if ( pVmcb->ctrl.u16InterceptRdDRx != 0xffff
1576	\|\| pVmcb->ctrl.u16InterceptWrDRx != 0xffff)
1577	{
1578	pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
1579	pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
1580	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1581	}
1582	}
1583	else
1584	{
1585	if ( pVmcb->ctrl.u16InterceptRdDRx
1586	\|\| pVmcb->ctrl.u16InterceptWrDRx)
1587	{
1588	pVmcb->ctrl.u16InterceptRdDRx = 0;
1589	pVmcb->ctrl.u16InterceptWrDRx = 0;
1590	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
1591	}
1592	}
1593
1594	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_DEBUG);
1595	}
1596
1597
1598	/**
1599	* Loads the guest APIC state (currently just the TPR).
1600	*
1601	* @returns VBox status code.
1602	* @param pVCpu The cross context virtual CPU structure.
1603	* @param pVmcb Pointer to the VM control block.
1604	* @param pCtx Pointer to the guest-CPU context.
1605	*/
1606	static int hmR0SvmLoadGuestApicState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1607	{
1608	if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE))
1609	return VINF_SUCCESS;
1610
1611	int rc = VINF_SUCCESS;
1612	PVM pVM = pVCpu->CTX_SUFF(pVM);
1613	if ( PDMHasApic(pVM)
1614	&& APICIsEnabled(pVCpu))
1615	{
1616	bool fPendingIntr;
1617	uint8_t u8Tpr;
1618	rc = APICGetTpr(pVCpu, &u8Tpr, &fPendingIntr, NULL /* pu8PendingIrq */);
1619	AssertRCReturn(rc, rc);
1620
1621	/* Assume that we need to trap all TPR accesses and thus need not check on
1622	every #VMEXIT if we should update the TPR. */
1623	Assert(pVmcb->ctrl.IntCtrl.n.u1VIrqMasking);
1624	pVCpu->hm.s.svm.fSyncVTpr = false;
1625
1626	/* 32-bit guests uses LSTAR MSR for patching guest code which touches the TPR. */
1627	if (pVM->hm.s.fTPRPatchingActive)
1628	{
1629	pCtx->msrLSTAR = u8Tpr;
1630
1631	/* If there are interrupts pending, intercept LSTAR writes, otherwise don't intercept reads or writes. */
1632	if (fPendingIntr)
1633	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_INTERCEPT_WRITE);
1634	else
1635	{
1636	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
1637	pVCpu->hm.s.svm.fSyncVTpr = true;
1638	}
1639	}
1640	else
1641	{
1642	/* Bits 3-0 of the VTPR field correspond to bits 7-4 of the TPR (which is the Task-Priority Class). */
1643	pVmcb->ctrl.IntCtrl.n.u8VTPR = (u8Tpr >> 4);
1644
1645	/* If there are interrupts pending, intercept CR8 writes to evaluate ASAP if we can deliver the interrupt to the guest. */
1646	if (fPendingIntr)
1647	pVmcb->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
1648	else
1649	{
1650	pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
1651	pVCpu->hm.s.svm.fSyncVTpr = true;
1652	}
1653
1654	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_TPR);
1655	}
1656	}
1657
1658	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
1659	return rc;
1660	}
1661
1662
1663	/**
1664	* Loads the exception interrupts required for guest execution in the VMCB.
1665	*
1666	* @returns VBox status code.
1667	* @param pVCpu The cross context virtual CPU structure.
1668	* @param pVmcb Pointer to the VM control block.
1669	* @param pCtx Pointer to the guest-CPU context.
1670	*/
1671	static int hmR0SvmLoadGuestXcptIntercepts(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1672	{
1673	NOREF(pCtx);
1674	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_XCPT_INTERCEPTS))
1675	{
1676	/* Trap #UD for GIM provider (e.g. for hypercalls). */
1677	if (pVCpu->hm.s.fGIMTrapXcptUD)
1678	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_UD);
1679	else
1680	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_UD);
1681
1682	/* Trap #BP for INT3 debug breakpoints set by the VM debugger. */
1683	if (pVCpu->CTX_SUFF(pVM)->dbgf.ro.cEnabledInt3Breakpoints)
1684	hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_BP);
1685	else
1686	hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_BP);
1687
1688	/* The remaining intercepts are handled elsewhere, e.g. in hmR0SvmLoadSharedCR0(). */
1689	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_XCPT_INTERCEPTS);
1690	}
1691	return VINF_SUCCESS;
1692	}
1693
1694
1695	/**
1696	* Sets up the appropriate function to run guest code.
1697	*
1698	* @returns VBox status code.
1699	* @param pVCpu The cross context virtual CPU structure.
1700	* @param pCtx Pointer to the guest-CPU context.
1701	*
1702	* @remarks No-long-jump zone!!!
1703	*/
1704	static int hmR0SvmSetupVMRunHandler(PVMCPU pVCpu, PCPUMCTX pCtx)
1705	{
1706	if (CPUMIsGuestInLongModeEx(pCtx))
1707	{
1708	#ifndef VBOX_ENABLE_64_BITS_GUESTS
1709	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
1710	#endif
1711	Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fAllow64BitGuests); /* Guaranteed by hmR3InitFinalizeR0(). */
1712	#if HC_ARCH_BITS == 32
1713	/* 32-bit host. We need to switch to 64-bit before running the 64-bit guest. */
1714	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
1715	#else
1716	/* 64-bit host or hybrid host. */
1717	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun64;
1718	#endif
1719	}
1720	else
1721	{
1722	/* Guest is not in long mode, use the 32-bit handler. */
1723	pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun;
1724	}
1725	return VINF_SUCCESS;
1726	}
1727
1728
1729	/**
1730	* Enters the AMD-V session.
1731	*
1732	* @returns VBox status code.
1733	* @param pVM The cross context VM structure.
1734	* @param pVCpu The cross context virtual CPU structure.
1735	* @param pCpu Pointer to the CPU info struct.
1736	*/
1737	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHMGLOBALCPUINFO pCpu)
1738	{
1739	AssertPtr(pVM);
1740	AssertPtr(pVCpu);
1741	Assert(pVM->hm.s.svm.fSupported);
1742	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1743	NOREF(pVM); NOREF(pCpu);
1744
1745	LogFlowFunc(("pVM=%p pVCpu=%p\n", pVM, pVCpu));
1746	Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE));
1747
1748	pVCpu->hm.s.fLeaveDone = false;
1749	return VINF_SUCCESS;
1750	}
1751
1752
1753	/**
1754	* Thread-context callback for AMD-V.
1755	*
1756	* @param enmEvent The thread-context event.
1757	* @param pVCpu The cross context virtual CPU structure.
1758	* @param fGlobalInit Whether global VT-x/AMD-V init. is used.
1759	* @thread EMT(pVCpu)
1760	*/
1761	VMMR0DECL(void) SVMR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPU pVCpu, bool fGlobalInit)
1762	{
1763	NOREF(fGlobalInit);
1764
1765	switch (enmEvent)
1766	{
1767	case RTTHREADCTXEVENT_OUT:
1768	{
1769	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1770	Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
1771	VMCPU_ASSERT_EMT(pVCpu);
1772
1773	/* No longjmps (log-flush, locks) in this fragile context. */
1774	VMMRZCallRing3Disable(pVCpu);
1775
1776	if (!pVCpu->hm.s.fLeaveDone)
1777	{
1778	hmR0SvmLeave(pVCpu);
1779	pVCpu->hm.s.fLeaveDone = true;
1780	}
1781
1782	/* Leave HM context, takes care of local init (term). */
1783	int rc = HMR0LeaveCpu(pVCpu);
1784	AssertRC(rc); NOREF(rc);
1785
1786	/* Restore longjmp state. */
1787	VMMRZCallRing3Enable(pVCpu);
1788	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatSwitchPreempt);
1789	break;
1790	}
1791
1792	case RTTHREADCTXEVENT_IN:
1793	{
1794	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1795	Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
1796	VMCPU_ASSERT_EMT(pVCpu);
1797
1798	/* No longjmps (log-flush, locks) in this fragile context. */
1799	VMMRZCallRing3Disable(pVCpu);
1800
1801	/*
1802	* Initialize the bare minimum state required for HM. This takes care of
1803	* initializing AMD-V if necessary (onlined CPUs, local init etc.)
1804	*/
1805	int rc = HMR0EnterCpu(pVCpu);
1806	AssertRC(rc); NOREF(rc);
1807	Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE));
1808
1809	pVCpu->hm.s.fLeaveDone = false;
1810
1811	/* Restore longjmp state. */
1812	VMMRZCallRing3Enable(pVCpu);
1813	break;
1814	}
1815
1816	default:
1817	break;
1818	}
1819	}
1820
1821
1822	/**
1823	* Saves the host state.
1824	*
1825	* @returns VBox status code.
1826	* @param pVM The cross context VM structure.
1827	* @param pVCpu The cross context virtual CPU structure.
1828	*
1829	* @remarks No-long-jump zone!!!
1830	*/
1831	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
1832	{
1833	NOREF(pVM);
1834	NOREF(pVCpu);
1835	/* Nothing to do here. AMD-V does this for us automatically during the world-switch. */
1836	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT);
1837	return VINF_SUCCESS;
1838	}
1839
1840
1841	/**
1842	* Loads the guest state into the VMCB.
1843	*
1844	* The CPU state will be loaded from these fields on every successful VM-entry.
1845	* Also sets up the appropriate VMRUN function to execute guest code based on
1846	* the guest CPU mode.
1847	*
1848	* @returns VBox status code.
1849	* @param pVM The cross context VM structure.
1850	* @param pVCpu The cross context virtual CPU structure.
1851	* @param pCtx Pointer to the guest-CPU context.
1852	*
1853	* @remarks No-long-jump zone!!!
1854	*/
1855	static int hmR0SvmLoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
1856	{
1857	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
1858	AssertMsgReturn(pVmcb, ("Invalid pVmcb\n"), VERR_SVM_INVALID_PVMCB);
1859
1860	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
1861
1862	int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcb, pCtx);
1863	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestControlRegs! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1864
1865	hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcb, pCtx);
1866	hmR0SvmLoadGuestMsrs(pVCpu, pVmcb, pCtx);
1867
1868	pVmcb->guest.u64RIP = pCtx->rip;
1869	pVmcb->guest.u64RSP = pCtx->rsp;
1870	pVmcb->guest.u64RFlags = pCtx->eflags.u32;
1871	pVmcb->guest.u64RAX = pCtx->rax;
1872
1873	rc = hmR0SvmLoadGuestApicState(pVCpu, pVmcb, pCtx);
1874	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestApicState! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1875
1876	rc = hmR0SvmLoadGuestXcptIntercepts(pVCpu, pVmcb, pCtx);
1877	AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestXcptIntercepts! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1878
1879	rc = hmR0SvmSetupVMRunHandler(pVCpu, pCtx);
1880	AssertLogRelMsgRCReturn(rc, ("hmR0SvmSetupVMRunHandler! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
1881
1882	/* Clear any unused and reserved bits. */
1883	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
1884	\| HM_CHANGED_GUEST_RSP
1885	\| HM_CHANGED_GUEST_RFLAGS
1886	\| HM_CHANGED_GUEST_SYSENTER_CS_MSR
1887	\| HM_CHANGED_GUEST_SYSENTER_EIP_MSR
1888	\| HM_CHANGED_GUEST_SYSENTER_ESP_MSR
1889	\| HM_CHANGED_GUEST_LAZY_MSRS /* Unused. */
1890	\| HM_CHANGED_SVM_RESERVED1 /* Reserved. */
1891	\| HM_CHANGED_SVM_RESERVED2
1892	\| HM_CHANGED_SVM_RESERVED3
1893	\| HM_CHANGED_SVM_RESERVED4);
1894
1895	/* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
1896	AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
1897	\|\| HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT \| HM_CHANGED_HOST_GUEST_SHARED_STATE),
1898	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
1899
1900	Log4(("Load: CS:RIP=%04x:%RX64 EFL=%#x SS:RSP=%04x:%RX64\n", pCtx->cs.Sel, pCtx->rip, pCtx->eflags.u, pCtx->ss.Sel, pCtx->rsp));
1901	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
1902	return rc;
1903	}
1904
1905
1906	/**
1907	* Loads the state shared between the host and guest into the
1908	* VMCB.
1909	*
1910	* @param pVCpu The cross context virtual CPU structure.
1911	* @param pVmcb Pointer to the VM control block.
1912	* @param pCtx Pointer to the guest-CPU context.
1913	*
1914	* @remarks No-long-jump zone!!!
1915	*/
1916	static void hmR0SvmLoadSharedState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
1917	{
1918	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
1919	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
1920
1921	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
1922	hmR0SvmLoadSharedCR0(pVCpu, pVmcb, pCtx);
1923
1924	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
1925	hmR0SvmLoadSharedDebugState(pVCpu, pVmcb, pCtx);
1926
1927	/* Unused on AMD-V. */
1928	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LAZY_MSRS);
1929
1930	AssertMsg(!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE),
1931	("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
1932	}
1933
1934
1935	/**
1936	* Saves the entire guest state from the VMCB into the
1937	* guest-CPU context. Currently there is no residual state left in the CPU that
1938	* is not updated in the VMCB.
1939	*
1940	* @returns VBox status code.
1941	* @param pVCpu The cross context virtual CPU structure.
1942	* @param pMixedCtx Pointer to the guest-CPU context. The data may be
1943	* out-of-sync. Make sure to update the required fields
1944	* before using them.
1945	*/
1946	static void hmR0SvmSaveGuestState(PVMCPU pVCpu, PCPUMCTX pMixedCtx)
1947	{
1948	Assert(VMMRZCallRing3IsEnabled(pVCpu));
1949
1950	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
1951
1952	pMixedCtx->rip = pVmcb->guest.u64RIP;
1953	pMixedCtx->rsp = pVmcb->guest.u64RSP;
1954	pMixedCtx->eflags.u32 = pVmcb->guest.u64RFlags;
1955	pMixedCtx->rax = pVmcb->guest.u64RAX;
1956
1957	/*
1958	* Guest interrupt shadow.
1959	*/
1960	if (pVmcb->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
1961	EMSetInhibitInterruptsPC(pVCpu, pMixedCtx->rip);
1962	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
1963	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
1964
1965	/*
1966	* Guest Control registers: CR2, CR3 (handled at the end) - accesses to other control registers are always intercepted.
1967	*/
1968	pMixedCtx->cr2 = pVmcb->guest.u64CR2;
1969
1970	/*
1971	* Guest MSRs.
1972	*/
1973	pMixedCtx->msrSTAR = pVmcb->guest.u64STAR; /* legacy syscall eip, cs & ss */
1974	pMixedCtx->msrLSTAR = pVmcb->guest.u64LSTAR; /* 64-bit mode syscall rip */
1975	pMixedCtx->msrCSTAR = pVmcb->guest.u64CSTAR; /* compatibility mode syscall rip */
1976	pMixedCtx->msrSFMASK = pVmcb->guest.u64SFMASK; /* syscall flag mask */
1977	pMixedCtx->msrKERNELGSBASE = pVmcb->guest.u64KernelGSBase; /* swapgs exchange value */
1978	pMixedCtx->SysEnter.cs = pVmcb->guest.u64SysEnterCS;
1979	pMixedCtx->SysEnter.eip = pVmcb->guest.u64SysEnterEIP;
1980	pMixedCtx->SysEnter.esp = pVmcb->guest.u64SysEnterESP;
1981
1982	/*
1983	* Guest segment registers (includes FS, GS base MSRs for 64-bit guests).
1984	*/
1985	HMSVM_SAVE_SEG_REG(CS, cs);
1986	HMSVM_SAVE_SEG_REG(SS, ss);
1987	HMSVM_SAVE_SEG_REG(DS, ds);
1988	HMSVM_SAVE_SEG_REG(ES, es);
1989	HMSVM_SAVE_SEG_REG(FS, fs);
1990	HMSVM_SAVE_SEG_REG(GS, gs);
1991
1992	/*
1993	* Correct the hidden CS granularity bit. Haven't seen it being wrong in any other
1994	* register (yet).
1995	*/
1996	/** @todo SELM might need to be fixed as it too should not care about the
1997	* granularity bit. See @bugref{6785}. */
1998	if ( !pMixedCtx->cs.Attr.n.u1Granularity
1999	&& pMixedCtx->cs.Attr.n.u1Present
2000	&& pMixedCtx->cs.u32Limit > UINT32_C(0xfffff))
2001	{
2002	Assert((pMixedCtx->cs.u32Limit & 0xfff) == 0xfff);
2003	pMixedCtx->cs.Attr.n.u1Granularity = 1;
2004	}
2005
2006	#ifdef VBOX_STRICT
2007	# define HMSVM_ASSERT_SEG_GRANULARITY(reg) \
2008	AssertMsg( !pMixedCtx->reg.Attr.n.u1Present \
2009	\|\| ( pMixedCtx->reg.Attr.n.u1Granularity \
2010	? (pMixedCtx->reg.u32Limit & 0xfff) == 0xfff \
2011	: pMixedCtx->reg.u32Limit <= UINT32_C(0xfffff)), \
2012	("Invalid Segment Attributes Limit=%#RX32 Attr=%#RX32 Base=%#RX64\n", pMixedCtx->reg.u32Limit, \
2013	pMixedCtx->reg.Attr.u, pMixedCtx->reg.u64Base))
2014
2015	HMSVM_ASSERT_SEG_GRANULARITY(cs);
2016	HMSVM_ASSERT_SEG_GRANULARITY(ss);
2017	HMSVM_ASSERT_SEG_GRANULARITY(ds);
2018	HMSVM_ASSERT_SEG_GRANULARITY(es);
2019	HMSVM_ASSERT_SEG_GRANULARITY(fs);
2020	HMSVM_ASSERT_SEG_GRANULARITY(gs);
2021
2022	# undef HMSVM_ASSERT_SEL_GRANULARITY
2023	#endif
2024
2025	/*
2026	* Sync the hidden SS DPL field. AMD CPUs have a separate CPL field in the VMCB and uses that
2027	* and thus it's possible that when the CPL changes during guest execution that the SS DPL
2028	* isn't updated by AMD-V. Observed on some AMD Fusion CPUs with 64-bit guests.
2029	* See AMD spec. 15.5.1 "Basic operation".
2030	*/
2031	Assert(!(pVmcb->guest.u8CPL & ~0x3));
2032	pMixedCtx->ss.Attr.n.u2Dpl = pVmcb->guest.u8CPL & 0x3;
2033
2034	/*
2035	* Guest TR.
2036	* Fixup TR attributes so it's compatible with Intel. Important when saved-states are used
2037	* between Intel and AMD. See @bugref{6208#c39}.
2038	* ASSUME that it's normally correct and that we're in 32-bit or 64-bit mode.
2039	*/
2040	HMSVM_SAVE_SEG_REG(TR, tr);
2041	if (pMixedCtx->tr.Attr.n.u4Type != X86_SEL_TYPE_SYS_386_TSS_BUSY)
2042	{
2043	if ( pMixedCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_386_TSS_AVAIL
2044	\|\| CPUMIsGuestInLongModeEx(pMixedCtx))
2045	pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
2046	else if (pMixedCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_286_TSS_AVAIL)
2047	pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_286_TSS_BUSY;
2048	}
2049
2050	/*
2051	* Guest Descriptor-Table registers.
2052	*/
2053	HMSVM_SAVE_SEG_REG(LDTR, ldtr);
2054	pMixedCtx->gdtr.cbGdt = pVmcb->guest.GDTR.u32Limit;
2055	pMixedCtx->gdtr.pGdt = pVmcb->guest.GDTR.u64Base;
2056
2057	pMixedCtx->idtr.cbIdt = pVmcb->guest.IDTR.u32Limit;
2058	pMixedCtx->idtr.pIdt = pVmcb->guest.IDTR.u64Base;
2059
2060	/*
2061	* Guest Debug registers.
2062	*/
2063	if (!pVCpu->hm.s.fUsingHyperDR7)
2064	{
2065	pMixedCtx->dr[6] = pVmcb->guest.u64DR6;
2066	pMixedCtx->dr[7] = pVmcb->guest.u64DR7;
2067	}
2068	else
2069	{
2070	Assert(pVmcb->guest.u64DR7 == CPUMGetHyperDR7(pVCpu));
2071	CPUMSetHyperDR6(pVCpu, pVmcb->guest.u64DR6);
2072	}
2073
2074	/*
2075	* With Nested Paging, CR3 changes are not intercepted. Therefore, sync. it now.
2076	* This is done as the very last step of syncing the guest state, as PGMUpdateCR3() may cause longjmp's to ring-3.
2077	*/
2078	if ( pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging
2079	&& pMixedCtx->cr3 != pVmcb->guest.u64CR3)
2080	{
2081	CPUMSetGuestCR3(pVCpu, pVmcb->guest.u64CR3);
2082	PGMUpdateCR3(pVCpu, pVmcb->guest.u64CR3);
2083	}
2084	}
2085
2086
2087	/**
2088	* Does the necessary state syncing before returning to ring-3 for any reason
2089	* (longjmp, preemption, voluntary exits to ring-3) from AMD-V.
2090	*
2091	* @param pVCpu The cross context virtual CPU structure.
2092	*
2093	* @remarks No-long-jmp zone!!!
2094	*/
2095	static void hmR0SvmLeave(PVMCPU pVCpu)
2096	{
2097	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2098	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2099	Assert(VMMR0IsLogFlushDisabled(pVCpu));
2100
2101	/*
2102	* !!! IMPORTANT !!!
2103	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
2104	*/
2105
2106	/* Restore host FPU state if necessary and resync on next R0 reentry .*/
2107	if (CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu))
2108	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
2109
2110	/*
2111	* Restore host debug registers if necessary and resync on next R0 reentry.
2112	*/
2113	#ifdef VBOX_STRICT
2114	if (CPUMIsHyperDebugStateActive(pVCpu))
2115	{
2116	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2117	Assert(pVmcb->ctrl.u16InterceptRdDRx == 0xffff);
2118	Assert(pVmcb->ctrl.u16InterceptWrDRx == 0xffff);
2119	}
2120	#endif
2121	if (CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */))
2122	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
2123
2124	Assert(!CPUMIsHyperDebugStateActive(pVCpu));
2125	Assert(!CPUMIsGuestDebugStateActive(pVCpu));
2126
2127	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
2128	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatLoadGuestState);
2129	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit1);
2130	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit2);
2131	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
2132
2133	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
2134	}
2135
2136
2137	/**
2138	* Leaves the AMD-V session.
2139	*
2140	* @returns VBox status code.
2141	* @param pVCpu The cross context virtual CPU structure.
2142	*/
2143	static int hmR0SvmLeaveSession(PVMCPU pVCpu)
2144	{
2145	HM_DISABLE_PREEMPT();
2146	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2147	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
2148
2149	/* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
2150	and done this from the SVMR0ThreadCtxCallback(). */
2151	if (!pVCpu->hm.s.fLeaveDone)
2152	{
2153	hmR0SvmLeave(pVCpu);
2154	pVCpu->hm.s.fLeaveDone = true;
2155	}
2156
2157	/*
2158	* !!! IMPORTANT !!!
2159	* If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
2160	*/
2161
2162	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
2163	/* Deregister hook now that we've left HM context before re-enabling preemption. */
2164	VMMR0ThreadCtxHookDisable(pVCpu);
2165
2166	/* Leave HM context. This takes care of local init (term). */
2167	int rc = HMR0LeaveCpu(pVCpu);
2168
2169	HM_RESTORE_PREEMPT();
2170	return rc;
2171	}
2172
2173
2174	/**
2175	* Does the necessary state syncing before doing a longjmp to ring-3.
2176	*
2177	* @returns VBox status code.
2178	* @param pVCpu The cross context virtual CPU structure.
2179	*
2180	* @remarks No-long-jmp zone!!!
2181	*/
2182	static int hmR0SvmLongJmpToRing3(PVMCPU pVCpu)
2183	{
2184	return hmR0SvmLeaveSession(pVCpu);
2185	}
2186
2187
2188	/**
2189	* VMMRZCallRing3() callback wrapper which saves the guest state (or restores
2190	* any remaining host state) before we longjump to ring-3 and possibly get
2191	* preempted.
2192	*
2193	* @param pVCpu The cross context virtual CPU structure.
2194	* @param enmOperation The operation causing the ring-3 longjump.
2195	* @param pvUser The user argument (pointer to the possibly
2196	* out-of-date guest-CPU context).
2197	*/
2198	static DECLCALLBACK(int) hmR0SvmCallRing3Callback(PVMCPU pVCpu, VMMCALLRING3 enmOperation, void *pvUser)
2199	{
2200	RT_NOREF_PV(pvUser);
2201
2202	if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
2203	{
2204	/*
2205	* !!! IMPORTANT !!!
2206	* If you modify code here, make sure to check whether hmR0SvmLeave() and hmR0SvmLeaveSession() needs
2207	* to be updated too. This is a stripped down version which gets out ASAP trying to not trigger any assertion.
2208	*/
2209	VMMRZCallRing3RemoveNotification(pVCpu);
2210	VMMRZCallRing3Disable(pVCpu);
2211	HM_DISABLE_PREEMPT();
2212
2213	/* Restore host FPU state if necessary and resync on next R0 reentry. */
2214	CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
2215
2216	/* Restore host debug registers if necessary and resync on next R0 reentry. */
2217	CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
2218
2219	/* Deregister the hook now that we've left HM context before re-enabling preemption. */
2220	/** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
2221	VMMR0ThreadCtxHookDisable(pVCpu);
2222
2223	/* Leave HM context. This takes care of local init (term). */
2224	HMR0LeaveCpu(pVCpu);
2225
2226	HM_RESTORE_PREEMPT();
2227	return VINF_SUCCESS;
2228	}
2229
2230	Assert(pVCpu);
2231	Assert(pvUser);
2232	Assert(VMMRZCallRing3IsEnabled(pVCpu));
2233	HMSVM_ASSERT_PREEMPT_SAFE();
2234
2235	VMMRZCallRing3Disable(pVCpu);
2236	Assert(VMMR0IsLogFlushDisabled(pVCpu));
2237
2238	Log4(("hmR0SvmCallRing3Callback->hmR0SvmLongJmpToRing3\n"));
2239	int rc = hmR0SvmLongJmpToRing3(pVCpu);
2240	AssertRCReturn(rc, rc);
2241
2242	VMMRZCallRing3Enable(pVCpu);
2243	return VINF_SUCCESS;
2244	}
2245
2246
2247	/**
2248	* Take necessary actions before going back to ring-3.
2249	*
2250	* An action requires us to go back to ring-3. This function does the necessary
2251	* steps before we can safely return to ring-3. This is not the same as longjmps
2252	* to ring-3, this is voluntary.
2253	*
2254	* @param pVM The cross context VM structure.
2255	* @param pVCpu The cross context virtual CPU structure.
2256	* @param pCtx Pointer to the guest-CPU context.
2257	* @param rcExit The reason for exiting to ring-3. Can be
2258	* VINF_VMM_UNKNOWN_RING3_CALL.
2259	*/
2260	static void hmR0SvmExitToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, int rcExit)
2261	{
2262	Assert(pVM);
2263	Assert(pVCpu);
2264	Assert(pCtx);
2265	HMSVM_ASSERT_PREEMPT_SAFE();
2266
2267	/* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
2268	VMMRZCallRing3Disable(pVCpu);
2269	Log4(("hmR0SvmExitToRing3: rcExit=%d\n", rcExit));
2270
2271	/* We need to do this only while truly exiting the "inner loop" back to ring-3 and -not- for any longjmp to ring3. */
2272	if (pVCpu->hm.s.Event.fPending)
2273	{
2274	hmR0SvmPendingEventToTrpmTrap(pVCpu);
2275	Assert(!pVCpu->hm.s.Event.fPending);
2276	}
2277
2278	/* If we're emulating an instruction, we shouldn't have any TRPM traps pending
2279	and if we're injecting an event we should have a TRPM trap pending. */
2280	AssertMsg(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT \|\| TRPMHasTrap(pVCpu), ("rcExit=%Rrc\n", rcExit));
2281	AssertMsg(rcExit != VINF_EM_RAW_EMULATE_INSTR \|\| !TRPMHasTrap(pVCpu), ("rcExit=%Rrc\n", rcExit));
2282
2283	/* Sync. the necessary state for going back to ring-3. */
2284	hmR0SvmLeaveSession(pVCpu);
2285	STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
2286
2287	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
2288	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
2289	\| CPUM_CHANGED_LDTR
2290	\| CPUM_CHANGED_GDTR
2291	\| CPUM_CHANGED_IDTR
2292	\| CPUM_CHANGED_TR
2293	\| CPUM_CHANGED_HIDDEN_SEL_REGS);
2294	if ( pVM->hm.s.fNestedPaging
2295	&& CPUMIsGuestPagingEnabledEx(pCtx))
2296	{
2297	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
2298	}
2299
2300	/* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
2301	if (rcExit != VINF_EM_RAW_INTERRUPT)
2302	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
2303
2304	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
2305
2306	/* We do -not- want any longjmp notifications after this! We must return to ring-3 ASAP. */
2307	VMMRZCallRing3RemoveNotification(pVCpu);
2308	VMMRZCallRing3Enable(pVCpu);
2309	}
2310
2311
2312	/**
2313	* Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
2314	* intercepts.
2315	*
2316	* @param pVM The cross context VM structure.
2317	* @param pVCpu The cross context virtual CPU structure.
2318	*
2319	* @remarks No-long-jump zone!!!
2320	*/
2321	static void hmR0SvmUpdateTscOffsetting(PVM pVM, PVMCPU pVCpu)
2322	{
2323	bool fParavirtTsc;
2324	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2325	bool fCanUseRealTsc = TMCpuTickCanUseRealTSC(pVM, pVCpu, &pVmcb->ctrl.u64TSCOffset, &fParavirtTsc);
2326	if (fCanUseRealTsc)
2327	{
2328	pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
2329	pVmcb->ctrl.u32InterceptCtrl2 &= ~SVM_CTRL2_INTERCEPT_RDTSCP;
2330	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
2331	}
2332	else
2333	{
2334	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
2335	pVmcb->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
2336	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
2337	}
2338	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
2339
2340	/** @todo later optimize this to be done elsewhere and not before every
2341	* VM-entry. */
2342	if (fParavirtTsc)
2343	{
2344	/* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
2345	information before every VM-entry, hence disable it for performance sake. */
2346	#if 0
2347	int rc = GIMR0UpdateParavirtTsc(pVM, 0 /* u64Offset */);
2348	AssertRC(rc);
2349	#endif
2350	STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
2351	}
2352	}
2353
2354
2355	/**
2356	* Sets an event as a pending event to be injected into the guest.
2357	*
2358	* @param pVCpu The cross context virtual CPU structure.
2359	* @param pEvent Pointer to the SVM event.
2360	* @param GCPtrFaultAddress The fault-address (CR2) in case it's a
2361	* page-fault.
2362	*
2363	* @remarks Statistics counter assumes this is a guest event being reflected to
2364	* the guest i.e. 'StatInjectPendingReflect' is incremented always.
2365	*/
2366	DECLINLINE(void) hmR0SvmSetPendingEvent(PVMCPU pVCpu, PSVMEVENT pEvent, RTGCUINTPTR GCPtrFaultAddress)
2367	{
2368	Assert(!pVCpu->hm.s.Event.fPending);
2369	Assert(pEvent->n.u1Valid);
2370
2371	pVCpu->hm.s.Event.u64IntInfo = pEvent->u;
2372	pVCpu->hm.s.Event.fPending = true;
2373	pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
2374
2375	Log4(("hmR0SvmSetPendingEvent: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
2376	pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
2377	}
2378
2379
2380	/**
2381	* Injects an event into the guest upon VMRUN by updating the relevant field
2382	* in the VMCB.
2383	*
2384	* @param pVCpu The cross context virtual CPU structure.
2385	* @param pVmcb Pointer to the guest VM control block.
2386	* @param pCtx Pointer to the guest-CPU context.
2387	* @param pEvent Pointer to the event.
2388	*
2389	* @remarks No-long-jump zone!!!
2390	* @remarks Requires CR0!
2391	*/
2392	DECLINLINE(void) hmR0SvmInjectEventVmcb(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx, PSVMEVENT pEvent)
2393	{
2394	NOREF(pVCpu); NOREF(pCtx);
2395
2396	pVmcb->ctrl.EventInject.u = pEvent->u;
2397	STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
2398
2399	Log4(("hmR0SvmInjectEventVmcb: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
2400	pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
2401	}
2402
2403
2404
2405	/**
2406	* Converts any TRPM trap into a pending HM event. This is typically used when
2407	* entering from ring-3 (not longjmp returns).
2408	*
2409	* @param pVCpu The cross context virtual CPU structure.
2410	*/
2411	static void hmR0SvmTrpmTrapToPendingEvent(PVMCPU pVCpu)
2412	{
2413	Assert(TRPMHasTrap(pVCpu));
2414	Assert(!pVCpu->hm.s.Event.fPending);
2415
2416	uint8_t uVector;
2417	TRPMEVENT enmTrpmEvent;
2418	RTGCUINT uErrCode;
2419	RTGCUINTPTR GCPtrFaultAddress;
2420	uint8_t cbInstr;
2421
2422	int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr);
2423	AssertRC(rc);
2424
2425	SVMEVENT Event;
2426	Event.u = 0;
2427	Event.n.u1Valid = 1;
2428	Event.n.u8Vector = uVector;
2429
2430	/* Refer AMD spec. 15.20 "Event Injection" for the format. */
2431	if (enmTrpmEvent == TRPM_TRAP)
2432	{
2433	Event.n.u3Type = SVM_EVENT_EXCEPTION;
2434	switch (uVector)
2435	{
2436	case X86_XCPT_NMI:
2437	{
2438	Event.n.u3Type = SVM_EVENT_NMI;
2439	break;
2440	}
2441
2442	case X86_XCPT_PF:
2443	case X86_XCPT_DF:
2444	case X86_XCPT_TS:
2445	case X86_XCPT_NP:
2446	case X86_XCPT_SS:
2447	case X86_XCPT_GP:
2448	case X86_XCPT_AC:
2449	{
2450	Event.n.u1ErrorCodeValid = 1;
2451	Event.n.u32ErrorCode = uErrCode;
2452	break;
2453	}
2454	}
2455	}
2456	else if (enmTrpmEvent == TRPM_HARDWARE_INT)
2457	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
2458	else if (enmTrpmEvent == TRPM_SOFTWARE_INT)
2459	Event.n.u3Type = SVM_EVENT_SOFTWARE_INT;
2460	else
2461	AssertMsgFailed(("Invalid TRPM event type %d\n", enmTrpmEvent));
2462
2463	rc = TRPMResetTrap(pVCpu);
2464	AssertRC(rc);
2465
2466	Log4(("TRPM->HM event: u=%#RX64 u8Vector=%#x uErrorCodeValid=%RTbool uErrorCode=%#RX32\n", Event.u, Event.n.u8Vector,
2467	!!Event.n.u1ErrorCodeValid, Event.n.u32ErrorCode));
2468
2469	hmR0SvmSetPendingEvent(pVCpu, &Event, GCPtrFaultAddress);
2470	}
2471
2472
2473	/**
2474	* Converts any pending SVM event into a TRPM trap. Typically used when leaving
2475	* AMD-V to execute any instruction.
2476	*
2477	* @param pVCpu The cross context virtual CPU structure.
2478	*/
2479	static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu)
2480	{
2481	Assert(pVCpu->hm.s.Event.fPending);
2482	Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo /, NULL / pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
2483
2484	SVMEVENT Event;
2485	Event.u = pVCpu->hm.s.Event.u64IntInfo;
2486
2487	uint8_t uVector = Event.n.u8Vector;
2488	uint8_t uVectorType = Event.n.u3Type;
2489
2490	TRPMEVENT enmTrapType;
2491	switch (uVectorType)
2492	{
2493	case SVM_EVENT_EXTERNAL_IRQ:
2494	enmTrapType = TRPM_HARDWARE_INT;
2495	break;
2496	case SVM_EVENT_SOFTWARE_INT:
2497	enmTrapType = TRPM_SOFTWARE_INT;
2498	break;
2499	case SVM_EVENT_EXCEPTION:
2500	case SVM_EVENT_NMI:
2501	enmTrapType = TRPM_TRAP;
2502	break;
2503	default:
2504	AssertMsgFailed(("Invalid pending-event type %#x\n", uVectorType));
2505	enmTrapType = TRPM_32BIT_HACK;
2506	break;
2507	}
2508
2509	Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, uVectorType));
2510
2511	int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
2512	AssertRC(rc);
2513
2514	if (Event.n.u1ErrorCodeValid)
2515	TRPMSetErrorCode(pVCpu, Event.n.u32ErrorCode);
2516
2517	if ( uVectorType == SVM_EVENT_EXCEPTION
2518	&& uVector == X86_XCPT_PF)
2519	{
2520	TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
2521	Assert(pVCpu->hm.s.Event.GCPtrFaultAddress == CPUMGetGuestCR2(pVCpu));
2522	}
2523	else if (uVectorType == SVM_EVENT_SOFTWARE_INT)
2524	{
2525	AssertMsg( uVectorType == SVM_EVENT_SOFTWARE_INT
2526	\|\| (uVector == X86_XCPT_BP \|\| uVector == X86_XCPT_OF),
2527	("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
2528	TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
2529	}
2530	pVCpu->hm.s.Event.fPending = false;
2531	}
2532
2533
2534	/**
2535	* Gets the guest's interrupt-shadow.
2536	*
2537	* @returns The guest's interrupt-shadow.
2538	* @param pVCpu The cross context virtual CPU structure.
2539	* @param pCtx Pointer to the guest-CPU context.
2540	*
2541	* @remarks No-long-jump zone!!!
2542	* @remarks Has side-effects with VMCPU_FF_INHIBIT_INTERRUPTS force-flag.
2543	*/
2544	DECLINLINE(uint32_t) hmR0SvmGetGuestIntrShadow(PVMCPU pVCpu, PCPUMCTX pCtx)
2545	{
2546	/*
2547	* Instructions like STI and MOV SS inhibit interrupts till the next instruction completes. Check if we should
2548	* inhibit interrupts or clear any existing interrupt-inhibition.
2549	*/
2550	uint32_t uIntrState = 0;
2551	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
2552	{
2553	if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
2554	{
2555	/*
2556	* We can clear the inhibit force flag as even if we go back to the recompiler without executing guest code in
2557	* AMD-V, the flag's condition to be cleared is met and thus the cleared state is correct.
2558	*/
2559	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
2560	}
2561	else
2562	uIntrState = SVM_INTERRUPT_SHADOW_ACTIVE;
2563	}
2564	return uIntrState;
2565	}
2566
2567
2568	/**
2569	* Sets the virtual interrupt intercept control in the VMCB which
2570	* instructs AMD-V to cause a \#VMEXIT as soon as the guest is in a state to
2571	* receive interrupts.
2572	*
2573	* @param pVmcb Pointer to the VM control block.
2574	*/
2575	DECLINLINE(void) hmR0SvmSetVirtIntrIntercept(PSVMVMCB pVmcb)
2576	{
2577	if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_VINTR))
2578	{
2579	pVmcb->ctrl.IntCtrl.n.u1VIrqValid = 1; /* A virtual interrupt is pending. */
2580	pVmcb->ctrl.IntCtrl.n.u8VIrqVector = 0; /* Not necessary as we #VMEXIT for delivering the interrupt. */
2581	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
2582	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_TPR);
2583
2584	Log4(("Setting VINTR intercept\n"));
2585	}
2586	}
2587
2588
2589	/**
2590	* Sets the IRET intercept control in the VMCB which instructs AMD-V to cause a
2591	* \#VMEXIT as soon as a guest starts executing an IRET. This is used to unblock
2592	* virtual NMIs.
2593	*
2594	* @param pVmcb Pointer to the VM control block.
2595	*/
2596	DECLINLINE(void) hmR0SvmSetIretIntercept(PSVMVMCB pVmcb)
2597	{
2598	if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_IRET))
2599	{
2600	pVmcb->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_IRET;
2601	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
2602
2603	Log4(("Setting IRET intercept\n"));
2604	}
2605	}
2606
2607
2608	/**
2609	* Clears the IRET intercept control in the VMCB.
2610	*
2611	* @param pVmcb Pointer to the VM control block.
2612	*/
2613	DECLINLINE(void) hmR0SvmClearIretIntercept(PSVMVMCB pVmcb)
2614	{
2615	if (pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_IRET)
2616	{
2617	pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_IRET;
2618	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
2619
2620	Log4(("Clearing IRET intercept\n"));
2621	}
2622	}
2623
2624
2625	/**
2626	* Evaluates the event to be delivered to the guest and sets it as the pending
2627	* event.
2628	*
2629	* @param pVCpu The cross context virtual CPU structure.
2630	* @param pCtx Pointer to the guest-CPU context.
2631	*/
2632	static void hmR0SvmEvaluatePendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
2633	{
2634	Assert(!pVCpu->hm.s.Event.fPending);
2635	Log4Func(("\n"));
2636
2637	bool const fIntShadow = RT_BOOL(hmR0SvmGetGuestIntrShadow(pVCpu, pCtx));
2638	bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
2639	bool const fBlockNmi = RT_BOOL(VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS));
2640	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2641
2642	if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC))
2643	APICUpdatePendingInterrupts(pVCpu);
2644
2645	SVMEVENT Event;
2646	Event.u = 0;
2647	/** @todo SMI. SMIs take priority over NMIs. */
2648	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)) /* NMI. NMIs take priority over regular interrupts . */
2649	{
2650	if (fBlockNmi)
2651	hmR0SvmSetIretIntercept(pVmcb);
2652	else if (fIntShadow)
2653	hmR0SvmSetVirtIntrIntercept(pVmcb);
2654	else
2655	{
2656	Log4(("Pending NMI\n"));
2657
2658	Event.n.u1Valid = 1;
2659	Event.n.u8Vector = X86_XCPT_NMI;
2660	Event.n.u3Type = SVM_EVENT_NMI;
2661
2662	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
2663	hmR0SvmSetIretIntercept(pVmcb);
2664	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
2665	}
2666	}
2667	else if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC)
2668	&& !pVCpu->hm.s.fSingleInstruction)
2669	{
2670	/*
2671	* Check if the guest can receive external interrupts (PIC/APIC). Once PDMGetInterrupt() returns
2672	* a valid interrupt we must- deliver the interrupt. We can no longer re-request it from the APIC.
2673	*/
2674	if ( !fBlockInt
2675	&& !fIntShadow)
2676	{
2677	uint8_t u8Interrupt;
2678	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
2679	if (RT_SUCCESS(rc))
2680	{
2681	Log4(("Injecting external interrupt u8Interrupt=%#x\n", u8Interrupt));
2682
2683	Event.n.u1Valid = 1;
2684	Event.n.u8Vector = u8Interrupt;
2685	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
2686
2687	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
2688	}
2689	else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
2690	{
2691	/*
2692	* AMD-V has no TPR thresholding feature. We just avoid posting the interrupt.
2693	* We just avoid delivering the TPR-masked interrupt here. TPR will be updated
2694	* always via hmR0SvmLoadGuestState() -> hmR0SvmLoadGuestApicState().
2695	*/
2696	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
2697	}
2698	else
2699	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
2700	}
2701	else
2702	hmR0SvmSetVirtIntrIntercept(pVmcb);
2703	}
2704	}
2705
2706
2707	/**
2708	* Injects any pending events into the guest if the guest is in a state to
2709	* receive them.
2710	*
2711	* @param pVCpu The cross context virtual CPU structure.
2712	* @param pCtx Pointer to the guest-CPU context.
2713	*/
2714	static void hmR0SvmInjectPendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
2715	{
2716	Assert(!TRPMHasTrap(pVCpu));
2717	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
2718
2719	bool const fIntShadow = RT_BOOL(hmR0SvmGetGuestIntrShadow(pVCpu, pCtx));
2720	bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
2721	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2722
2723	if (pVCpu->hm.s.Event.fPending) /* First, inject any pending HM events. */
2724	{
2725	SVMEVENT Event;
2726	Event.u = pVCpu->hm.s.Event.u64IntInfo;
2727	Assert(Event.n.u1Valid);
2728	#ifdef VBOX_STRICT
2729	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
2730	{
2731	Assert(!fBlockInt);
2732	Assert(!fIntShadow);
2733	}
2734	else if (Event.n.u3Type == SVM_EVENT_NMI)
2735	Assert(!fIntShadow);
2736	#endif
2737
2738	Log4(("Injecting pending HM event.\n"));
2739	hmR0SvmInjectEventVmcb(pVCpu, pVmcb, pCtx, &Event);
2740	pVCpu->hm.s.Event.fPending = false;
2741
2742	#ifdef VBOX_WITH_STATISTICS
2743	if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
2744	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
2745	else
2746	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
2747	#endif
2748	}
2749
2750	/* Update the guest interrupt shadow in the VMCB. */
2751	pVmcb->ctrl.u64IntShadow = !!fIntShadow;
2752	NOREF(fBlockInt);
2753	}
2754
2755
2756	/**
2757	* Reports world-switch error and dumps some useful debug info.
2758	*
2759	* @param pVM The cross context VM structure.
2760	* @param pVCpu The cross context virtual CPU structure.
2761	* @param rcVMRun The return code from VMRUN (or
2762	* VERR_SVM_INVALID_GUEST_STATE for invalid
2763	* guest-state).
2764	* @param pCtx Pointer to the guest-CPU context.
2765	*/
2766	static void hmR0SvmReportWorldSwitchError(PVM pVM, PVMCPU pVCpu, int rcVMRun, PCPUMCTX pCtx)
2767	{
2768	NOREF(pCtx);
2769	HMSVM_ASSERT_PREEMPT_SAFE();
2770	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
2771
2772	if (rcVMRun == VERR_SVM_INVALID_GUEST_STATE)
2773	{
2774	HMDumpRegs(pVM, pVCpu, pCtx); NOREF(pVM);
2775	#ifdef VBOX_STRICT
2776	Log4(("ctrl.u64VmcbCleanBits %#RX64\n", pVmcb->ctrl.u64VmcbCleanBits));
2777	Log4(("ctrl.u16InterceptRdCRx %#x\n", pVmcb->ctrl.u16InterceptRdCRx));
2778	Log4(("ctrl.u16InterceptWrCRx %#x\n", pVmcb->ctrl.u16InterceptWrCRx));
2779	Log4(("ctrl.u16InterceptRdDRx %#x\n", pVmcb->ctrl.u16InterceptRdDRx));
2780	Log4(("ctrl.u16InterceptWrDRx %#x\n", pVmcb->ctrl.u16InterceptWrDRx));
2781	Log4(("ctrl.u32InterceptException %#x\n", pVmcb->ctrl.u32InterceptException));
2782	Log4(("ctrl.u32InterceptCtrl1 %#x\n", pVmcb->ctrl.u32InterceptCtrl1));
2783	Log4(("ctrl.u32InterceptCtrl2 %#x\n", pVmcb->ctrl.u32InterceptCtrl2));
2784	Log4(("ctrl.u64IOPMPhysAddr %#RX64\n", pVmcb->ctrl.u64IOPMPhysAddr));
2785	Log4(("ctrl.u64MSRPMPhysAddr %#RX64\n", pVmcb->ctrl.u64MSRPMPhysAddr));
2786	Log4(("ctrl.u64TSCOffset %#RX64\n", pVmcb->ctrl.u64TSCOffset));
2787
2788	Log4(("ctrl.TLBCtrl.u32ASID %#x\n", pVmcb->ctrl.TLBCtrl.n.u32ASID));
2789	Log4(("ctrl.TLBCtrl.u8TLBFlush %#x\n", pVmcb->ctrl.TLBCtrl.n.u8TLBFlush));
2790	Log4(("ctrl.TLBCtrl.u24Reserved %#x\n", pVmcb->ctrl.TLBCtrl.n.u24Reserved));
2791
2792	Log4(("ctrl.IntCtrl.u8VTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u8VTPR));
2793	Log4(("ctrl.IntCtrl.u1VIrqValid %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqValid));
2794	Log4(("ctrl.IntCtrl.u7Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u7Reserved));
2795	Log4(("ctrl.IntCtrl.u4VIrqPriority %#x\n", pVmcb->ctrl.IntCtrl.n.u4VIrqPriority));
2796	Log4(("ctrl.IntCtrl.u1IgnoreTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR));
2797	Log4(("ctrl.IntCtrl.u3Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u3Reserved));
2798	Log4(("ctrl.IntCtrl.u1VIrqMasking %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqMasking));
2799	Log4(("ctrl.IntCtrl.u6Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved));
2800	Log4(("ctrl.IntCtrl.u8VIrqVector %#x\n", pVmcb->ctrl.IntCtrl.n.u8VIrqVector));
2801	Log4(("ctrl.IntCtrl.u24Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u24Reserved));
2802
2803	Log4(("ctrl.u64IntShadow %#RX64\n", pVmcb->ctrl.u64IntShadow));
2804	Log4(("ctrl.u64ExitCode %#RX64\n", pVmcb->ctrl.u64ExitCode));
2805	Log4(("ctrl.u64ExitInfo1 %#RX64\n", pVmcb->ctrl.u64ExitInfo1));
2806	Log4(("ctrl.u64ExitInfo2 %#RX64\n", pVmcb->ctrl.u64ExitInfo2));
2807	Log4(("ctrl.ExitIntInfo.u8Vector %#x\n", pVmcb->ctrl.ExitIntInfo.n.u8Vector));
2808	Log4(("ctrl.ExitIntInfo.u3Type %#x\n", pVmcb->ctrl.ExitIntInfo.n.u3Type));
2809	Log4(("ctrl.ExitIntInfo.u1ErrorCodeValid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
2810	Log4(("ctrl.ExitIntInfo.u19Reserved %#x\n", pVmcb->ctrl.ExitIntInfo.n.u19Reserved));
2811	Log4(("ctrl.ExitIntInfo.u1Valid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1Valid));
2812	Log4(("ctrl.ExitIntInfo.u32ErrorCode %#x\n", pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
2813	Log4(("ctrl.NestedPaging %#RX64\n", pVmcb->ctrl.NestedPaging.u));
2814	Log4(("ctrl.EventInject.u8Vector %#x\n", pVmcb->ctrl.EventInject.n.u8Vector));
2815	Log4(("ctrl.EventInject.u3Type %#x\n", pVmcb->ctrl.EventInject.n.u3Type));
2816	Log4(("ctrl.EventInject.u1ErrorCodeValid %#x\n", pVmcb->ctrl.EventInject.n.u1ErrorCodeValid));
2817	Log4(("ctrl.EventInject.u19Reserved %#x\n", pVmcb->ctrl.EventInject.n.u19Reserved));
2818	Log4(("ctrl.EventInject.u1Valid %#x\n", pVmcb->ctrl.EventInject.n.u1Valid));
2819	Log4(("ctrl.EventInject.u32ErrorCode %#x\n", pVmcb->ctrl.EventInject.n.u32ErrorCode));
2820
2821	Log4(("ctrl.u64NestedPagingCR3 %#RX64\n", pVmcb->ctrl.u64NestedPagingCR3));
2822	Log4(("ctrl.u64LBRVirt %#RX64\n", pVmcb->ctrl.u64LBRVirt));
2823
2824	Log4(("guest.CS.u16Sel %RTsel\n", pVmcb->guest.CS.u16Sel));
2825	Log4(("guest.CS.u16Attr %#x\n", pVmcb->guest.CS.u16Attr));
2826	Log4(("guest.CS.u32Limit %#RX32\n", pVmcb->guest.CS.u32Limit));
2827	Log4(("guest.CS.u64Base %#RX64\n", pVmcb->guest.CS.u64Base));
2828	Log4(("guest.DS.u16Sel %#RTsel\n", pVmcb->guest.DS.u16Sel));
2829	Log4(("guest.DS.u16Attr %#x\n", pVmcb->guest.DS.u16Attr));
2830	Log4(("guest.DS.u32Limit %#RX32\n", pVmcb->guest.DS.u32Limit));
2831	Log4(("guest.DS.u64Base %#RX64\n", pVmcb->guest.DS.u64Base));
2832	Log4(("guest.ES.u16Sel %RTsel\n", pVmcb->guest.ES.u16Sel));
2833	Log4(("guest.ES.u16Attr %#x\n", pVmcb->guest.ES.u16Attr));
2834	Log4(("guest.ES.u32Limit %#RX32\n", pVmcb->guest.ES.u32Limit));
2835	Log4(("guest.ES.u64Base %#RX64\n", pVmcb->guest.ES.u64Base));
2836	Log4(("guest.FS.u16Sel %RTsel\n", pVmcb->guest.FS.u16Sel));
2837	Log4(("guest.FS.u16Attr %#x\n", pVmcb->guest.FS.u16Attr));
2838	Log4(("guest.FS.u32Limit %#RX32\n", pVmcb->guest.FS.u32Limit));
2839	Log4(("guest.FS.u64Base %#RX64\n", pVmcb->guest.FS.u64Base));
2840	Log4(("guest.GS.u16Sel %RTsel\n", pVmcb->guest.GS.u16Sel));
2841	Log4(("guest.GS.u16Attr %#x\n", pVmcb->guest.GS.u16Attr));
2842	Log4(("guest.GS.u32Limit %#RX32\n", pVmcb->guest.GS.u32Limit));
2843	Log4(("guest.GS.u64Base %#RX64\n", pVmcb->guest.GS.u64Base));
2844
2845	Log4(("guest.GDTR.u32Limit %#RX32\n", pVmcb->guest.GDTR.u32Limit));
2846	Log4(("guest.GDTR.u64Base %#RX64\n", pVmcb->guest.GDTR.u64Base));
2847
2848	Log4(("guest.LDTR.u16Sel %RTsel\n", pVmcb->guest.LDTR.u16Sel));
2849	Log4(("guest.LDTR.u16Attr %#x\n", pVmcb->guest.LDTR.u16Attr));
2850	Log4(("guest.LDTR.u32Limit %#RX32\n", pVmcb->guest.LDTR.u32Limit));
2851	Log4(("guest.LDTR.u64Base %#RX64\n", pVmcb->guest.LDTR.u64Base));
2852
2853	Log4(("guest.IDTR.u32Limit %#RX32\n", pVmcb->guest.IDTR.u32Limit));
2854	Log4(("guest.IDTR.u64Base %#RX64\n", pVmcb->guest.IDTR.u64Base));
2855
2856	Log4(("guest.TR.u16Sel %RTsel\n", pVmcb->guest.TR.u16Sel));
2857	Log4(("guest.TR.u16Attr %#x\n", pVmcb->guest.TR.u16Attr));
2858	Log4(("guest.TR.u32Limit %#RX32\n", pVmcb->guest.TR.u32Limit));
2859	Log4(("guest.TR.u64Base %#RX64\n", pVmcb->guest.TR.u64Base));
2860
2861	Log4(("guest.u8CPL %#x\n", pVmcb->guest.u8CPL));
2862	Log4(("guest.u64CR0 %#RX64\n", pVmcb->guest.u64CR0));
2863	Log4(("guest.u64CR2 %#RX64\n", pVmcb->guest.u64CR2));
2864	Log4(("guest.u64CR3 %#RX64\n", pVmcb->guest.u64CR3));
2865	Log4(("guest.u64CR4 %#RX64\n", pVmcb->guest.u64CR4));
2866	Log4(("guest.u64DR6 %#RX64\n", pVmcb->guest.u64DR6));
2867	Log4(("guest.u64DR7 %#RX64\n", pVmcb->guest.u64DR7));
2868
2869	Log4(("guest.u64RIP %#RX64\n", pVmcb->guest.u64RIP));
2870	Log4(("guest.u64RSP %#RX64\n", pVmcb->guest.u64RSP));
2871	Log4(("guest.u64RAX %#RX64\n", pVmcb->guest.u64RAX));
2872	Log4(("guest.u64RFlags %#RX64\n", pVmcb->guest.u64RFlags));
2873
2874	Log4(("guest.u64SysEnterCS %#RX64\n", pVmcb->guest.u64SysEnterCS));
2875	Log4(("guest.u64SysEnterEIP %#RX64\n", pVmcb->guest.u64SysEnterEIP));
2876	Log4(("guest.u64SysEnterESP %#RX64\n", pVmcb->guest.u64SysEnterESP));
2877
2878	Log4(("guest.u64EFER %#RX64\n", pVmcb->guest.u64EFER));
2879	Log4(("guest.u64STAR %#RX64\n", pVmcb->guest.u64STAR));
2880	Log4(("guest.u64LSTAR %#RX64\n", pVmcb->guest.u64LSTAR));
2881	Log4(("guest.u64CSTAR %#RX64\n", pVmcb->guest.u64CSTAR));
2882	Log4(("guest.u64SFMASK %#RX64\n", pVmcb->guest.u64SFMASK));
2883	Log4(("guest.u64KernelGSBase %#RX64\n", pVmcb->guest.u64KernelGSBase));
2884	Log4(("guest.u64GPAT %#RX64\n", pVmcb->guest.u64GPAT));
2885	Log4(("guest.u64DBGCTL %#RX64\n", pVmcb->guest.u64DBGCTL));
2886	Log4(("guest.u64BR_FROM %#RX64\n", pVmcb->guest.u64BR_FROM));
2887	Log4(("guest.u64BR_TO %#RX64\n", pVmcb->guest.u64BR_TO));
2888	Log4(("guest.u64LASTEXCPFROM %#RX64\n", pVmcb->guest.u64LASTEXCPFROM));
2889	Log4(("guest.u64LASTEXCPTO %#RX64\n", pVmcb->guest.u64LASTEXCPTO));
2890	#endif /* VBOX_STRICT */
2891	}
2892	else
2893	Log4(("hmR0SvmReportWorldSwitchError: rcVMRun=%d\n", rcVMRun));
2894
2895	NOREF(pVmcb);
2896	}
2897
2898
2899	/**
2900	* Check per-VM and per-VCPU force flag actions that require us to go back to
2901	* ring-3 for one reason or another.
2902	*
2903	* @returns VBox status code (information status code included).
2904	* @retval VINF_SUCCESS if we don't have any actions that require going back to
2905	* ring-3.
2906	* @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
2907	* @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
2908	* interrupts)
2909	* @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
2910	* all EMTs to be in ring-3.
2911	* @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
2912	* @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
2913	* to the EM loop.
2914	*
2915	* @param pVM The cross context VM structure.
2916	* @param pVCpu The cross context virtual CPU structure.
2917	* @param pCtx Pointer to the guest-CPU context.
2918	*/
2919	static int hmR0SvmCheckForceFlags(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2920	{
2921	Assert(VMMRZCallRing3IsEnabled(pVCpu));
2922
2923	/* On AMD-V we don't need to update CR3, PAE PDPES lazily. See hmR0SvmSaveGuestState(). */
2924	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
2925	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
2926
2927	if ( VM_FF_IS_PENDING(pVM, !pVCpu->hm.s.fSingleInstruction
2928	? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
2929	\|\| VMCPU_FF_IS_PENDING(pVCpu, !pVCpu->hm.s.fSingleInstruction
2930	? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
2931	{
2932	/* Pending PGM C3 sync. */
2933	if (VMCPU_FF_IS_PENDING(pVCpu,VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
2934	{
2935	int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
2936	if (rc != VINF_SUCCESS)
2937	{
2938	Log4(("hmR0SvmCheckForceFlags: PGMSyncCR3 forcing us back to ring-3. rc=%d\n", rc));
2939	return rc;
2940	}
2941	}
2942
2943	/* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
2944	/* -XXX- what was that about single stepping? */
2945	if ( VM_FF_IS_PENDING(pVM, VM_FF_HM_TO_R3_MASK)
2946	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
2947	{
2948	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
2949	int rc = RT_UNLIKELY(VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
2950	Log4(("hmR0SvmCheckForceFlags: HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
2951	return rc;
2952	}
2953
2954	/* Pending VM request packets, such as hardware interrupts. */
2955	if ( VM_FF_IS_PENDING(pVM, VM_FF_REQUEST)
2956	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_REQUEST))
2957	{
2958	Log4(("hmR0SvmCheckForceFlags: Pending VM request forcing us back to ring-3\n"));
2959	return VINF_EM_PENDING_REQUEST;
2960	}
2961
2962	/* Pending PGM pool flushes. */
2963	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
2964	{
2965	Log4(("hmR0SvmCheckForceFlags: PGM pool flush pending forcing us back to ring-3\n"));
2966	return VINF_PGM_POOL_FLUSH_PENDING;
2967	}
2968
2969	/* Pending DMA requests. */
2970	if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
2971	{
2972	Log4(("hmR0SvmCheckForceFlags: Pending DMA request forcing us back to ring-3\n"));
2973	return VINF_EM_RAW_TO_R3;
2974	}
2975	}
2976
2977	return VINF_SUCCESS;
2978	}
2979
2980
2981	/**
2982	* Does the preparations before executing guest code in AMD-V.
2983	*
2984	* This may cause longjmps to ring-3 and may even result in rescheduling to the
2985	* recompiler. We must be cautious what we do here regarding committing
2986	* guest-state information into the VMCB assuming we assuredly execute the guest
2987	* in AMD-V. If we fall back to the recompiler after updating the VMCB and
2988	* clearing the common-state (TRPM/forceflags), we must undo those changes so
2989	* that the recompiler can (and should) use them when it resumes guest
2990	* execution. Otherwise such operations must be done when we can no longer
2991	* exit to ring-3.
2992	*
2993	* @returns VBox status code (informational status codes included).
2994	* @retval VINF_SUCCESS if we can proceed with running the guest.
2995	* @retval VINF_* scheduling changes, we have to go back to ring-3.
2996	*
2997	* @param pVM The cross context VM structure.
2998	* @param pVCpu The cross context virtual CPU structure.
2999	* @param pCtx Pointer to the guest-CPU context.
3000	* @param pSvmTransient Pointer to the SVM transient structure.
3001	*/
3002	static int hmR0SvmPreRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
3003	{
3004	HMSVM_ASSERT_PREEMPT_SAFE();
3005
3006	/* Check force flag actions that might require us to go back to ring-3. */
3007	int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
3008	if (rc != VINF_SUCCESS)
3009	return rc;
3010
3011	if (TRPMHasTrap(pVCpu))
3012	hmR0SvmTrpmTrapToPendingEvent(pVCpu);
3013	else if (!pVCpu->hm.s.Event.fPending)
3014	hmR0SvmEvaluatePendingEvent(pVCpu, pCtx);
3015
3016	/*
3017	* On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
3018	* Just do it in software, see @bugref{8411}.
3019	* NB: If we could continue a task switch exit we wouldn't need to do this.
3020	*/
3021	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending && (((pVCpu->hm.s.Event.u64IntInfo >> 8) & 7) == SVM_EVENT_NMI)))
3022	if (RT_UNLIKELY(!pVM->hm.s.svm.u32Features))
3023	return VINF_EM_RAW_INJECT_TRPM_EVENT;
3024
3025	#ifdef HMSVM_SYNC_FULL_GUEST_STATE
3026	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
3027	#endif
3028
3029	/* Load the guest bits that are not shared with the host in any way since we can longjmp or get preempted. */
3030	rc = hmR0SvmLoadGuestState(pVM, pVCpu, pCtx);
3031	AssertRCReturn(rc, rc);
3032	STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull);
3033
3034	/*
3035	* If we're not intercepting TPR changes in the guest, save the guest TPR before the world-switch
3036	* so we can update it on the way back if the guest changed the TPR.
3037	*/
3038	if (pVCpu->hm.s.svm.fSyncVTpr)
3039	{
3040	if (pVM->hm.s.fTPRPatchingActive)
3041	pSvmTransient->u8GuestTpr = pCtx->msrLSTAR;
3042	else
3043	{
3044	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3045	pSvmTransient->u8GuestTpr = pVmcb->ctrl.IntCtrl.n.u8VTPR;
3046	}
3047	}
3048
3049	/*
3050	* No longjmps to ring-3 from this point on!!!
3051	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
3052	* This also disables flushing of the R0-logger instance (if any).
3053	*/
3054	VMMRZCallRing3Disable(pVCpu);
3055
3056	/*
3057	* We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
3058	* when thread-context hooks aren't used and we've been running with preemption disabled for a while.
3059	*
3060	* We need to check for force-flags that could've possible been altered since we last checked them (e.g.
3061	* by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
3062	*
3063	* We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
3064	* executing guest code.
3065	*/
3066	pSvmTransient->fEFlags = ASMIntDisableFlags();
3067	if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS \| VM_FF_TM_VIRTUAL_SYNC)
3068	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
3069	{
3070	ASMSetFlags(pSvmTransient->fEFlags);
3071	VMMRZCallRing3Enable(pVCpu);
3072	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
3073	return VINF_EM_RAW_TO_R3;
3074	}
3075	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
3076	{
3077	ASMSetFlags(pSvmTransient->fEFlags);
3078	VMMRZCallRing3Enable(pVCpu);
3079	STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
3080	return VINF_EM_RAW_INTERRUPT;
3081	}
3082
3083	/*
3084	* If we are injecting an NMI, we must set VMCPU_FF_BLOCK_NMIS only when we are going to execute
3085	* guest code for certain (no exits to ring-3). Otherwise, we could re-read the flag on re-entry into
3086	* AMD-V and conclude that NMI inhibition is active when we have not even delivered the NMI.
3087	*
3088	* With VT-x, this is handled by the Guest interruptibility information VMCS field which will set the
3089	* VMCS field after actually delivering the NMI which we read on VM-exit to determine the state.
3090	*/
3091	if (pVCpu->hm.s.Event.fPending)
3092	{
3093	SVMEVENT Event;
3094	Event.u = pVCpu->hm.s.Event.u64IntInfo;
3095	if ( Event.n.u1Valid
3096	&& Event.n.u3Type == SVM_EVENT_NMI
3097	&& Event.n.u8Vector == X86_XCPT_NMI
3098	&& !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
3099	{
3100	VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
3101	}
3102	}
3103
3104	return VINF_SUCCESS;
3105	}
3106
3107
3108	/**
3109	* Prepares to run guest code in AMD-V and we've committed to doing so. This
3110	* means there is no backing out to ring-3 or anywhere else at this
3111	* point.
3112	*
3113	* @param pVM The cross context VM structure.
3114	* @param pVCpu The cross context virtual CPU structure.
3115	* @param pCtx Pointer to the guest-CPU context.
3116	* @param pSvmTransient Pointer to the SVM transient structure.
3117	*
3118	* @remarks Called with preemption disabled.
3119	* @remarks No-long-jump zone!!!
3120	*/
3121	static void hmR0SvmPreRunGuestCommitted(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
3122	{
3123	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3124	Assert(VMMR0IsLogFlushDisabled(pVCpu));
3125	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
3126
3127	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
3128	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
3129
3130	hmR0SvmInjectPendingEvent(pVCpu, pCtx);
3131
3132	if ( pVCpu->hm.s.fPreloadGuestFpu
3133	&& !CPUMIsGuestFPUStateActive(pVCpu))
3134	{
3135	CPUMR0LoadGuestFPU(pVM, pVCpu); /* (Ignore rc, no need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
3136	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
3137	}
3138
3139	/* Load the state shared between host and guest (FPU, debug). */
3140	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3141	if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE))
3142	hmR0SvmLoadSharedState(pVCpu, pVmcb, pCtx);
3143	HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT); /* Preemption might set this, nothing to do on AMD-V. */
3144	AssertMsg(!HMCPU_CF_VALUE(pVCpu), ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
3145
3146	/* Setup TSC offsetting. */
3147	RTCPUID idCurrentCpu = HMR0GetCurrentCpu()->idCpu;
3148	if ( pSvmTransient->fUpdateTscOffsetting
3149	\|\| idCurrentCpu != pVCpu->hm.s.idLastCpu)
3150	{
3151	hmR0SvmUpdateTscOffsetting(pVM, pVCpu);
3152	pSvmTransient->fUpdateTscOffsetting = false;
3153	}
3154
3155	/* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
3156	if (idCurrentCpu != pVCpu->hm.s.idLastCpu)
3157	pVmcb->ctrl.u64VmcbCleanBits = 0;
3158
3159	/* Store status of the shared guest-host state at the time of VMRUN. */
3160	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
3161	if (CPUMIsGuestInLongModeEx(pCtx))
3162	{
3163	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
3164	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
3165	}
3166	else
3167	#endif
3168	{
3169	pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
3170	pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
3171	}
3172	pSvmTransient->fWasGuestFPUStateActive = CPUMIsGuestFPUStateActive(pVCpu);
3173
3174	/* Flush the appropriate tagged-TLB entries. */
3175	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB flushing, set this across the world switch. */
3176	hmR0SvmFlushTaggedTlb(pVCpu);
3177	Assert(HMR0GetCurrentCpu()->idCpu == pVCpu->hm.s.idLastCpu);
3178
3179	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
3180
3181	TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
3182	to start executing. */
3183
3184	/*
3185	* Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that
3186	* RDTSCPs (that don't cause exits) reads the guest MSR. See @bugref{3324}.
3187	*
3188	* This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
3189	*/
3190	if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
3191	&& !(pVmcb->ctrl.u32InterceptCtrl2 & SVM_CTRL2_INTERCEPT_RDTSCP))
3192	{
3193	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
3194	pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
3195	uint64_t u64GuestTscAux = CPUMR0GetGuestTscAux(pVCpu);
3196	if (u64GuestTscAux != pVCpu->hm.s.u64HostTscAux)
3197	ASMWrMsr(MSR_K8_TSC_AUX, u64GuestTscAux);
3198	pSvmTransient->fRestoreTscAuxMsr = true;
3199	}
3200	else
3201	{
3202	hmR0SvmSetMsrPermission(pVCpu, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
3203	pSvmTransient->fRestoreTscAuxMsr = false;
3204	}
3205
3206	/* If VMCB Clean bits isn't supported by the CPU, simply mark all state-bits as dirty, indicating (re)load-from-VMCB. */
3207	if (!(pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN))
3208	pVmcb->ctrl.u64VmcbCleanBits = 0;
3209	}
3210
3211
3212	/**
3213	* Wrapper for running the guest code in AMD-V.
3214	*
3215	* @returns VBox strict status code.
3216	* @param pVM The cross context VM structure.
3217	* @param pVCpu The cross context virtual CPU structure.
3218	* @param pCtx Pointer to the guest-CPU context.
3219	*
3220	* @remarks No-long-jump zone!!!
3221	*/
3222	DECLINLINE(int) hmR0SvmRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3223	{
3224	/*
3225	* 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
3226	* using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
3227	* Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
3228	*/
3229	#ifdef VBOX_WITH_KERNEL_USING_XMM
3230	return HMR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
3231	pVCpu->hm.s.svm.pfnVMRun);
3232	#else
3233	return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
3234	#endif
3235	}
3236
3237
3238	/**
3239	* Performs some essential restoration of state after running guest code in
3240	* AMD-V.
3241	*
3242	* @param pVM The cross context VM structure.
3243	* @param pVCpu The cross context virtual CPU structure.
3244	* @param pMixedCtx Pointer to the guest-CPU context. The data maybe
3245	* out-of-sync. Make sure to update the required fields
3246	* before using them.
3247	* @param pSvmTransient Pointer to the SVM transient structure.
3248	* @param rcVMRun Return code of VMRUN.
3249	*
3250	* @remarks Called with interrupts disabled.
3251	* @remarks No-long-jump zone!!! This function will however re-enable longjmps
3252	* unconditionally when it is safe to do so.
3253	*/
3254	static void hmR0SvmPostRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient, int rcVMRun)
3255	{
3256	Assert(!VMMRZCallRing3IsEnabled(pVCpu));
3257
3258	ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB flushing. */
3259	ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for EMT poking. */
3260
3261	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3262	pVmcb->ctrl.u64VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL; /* Mark the VMCB-state cache as unmodified by VMM. */
3263
3264	/* TSC read must be done early for maximum accuracy. */
3265	if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_RDTSC))
3266	TMCpuTickSetLastSeen(pVCpu, ASMReadTSC() + pVmcb->ctrl.u64TSCOffset);
3267
3268	if (pSvmTransient->fRestoreTscAuxMsr)
3269	{
3270	uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
3271	CPUMR0SetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
3272	if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
3273	ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
3274	}
3275
3276	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatExit1, x);
3277	TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
3278	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
3279
3280	Assert(!(ASMGetFlags() & X86_EFL_IF));
3281	ASMSetFlags(pSvmTransient->fEFlags); /* Enable interrupts. */
3282	VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
3283
3284	/* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
3285	if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
3286	{
3287	Log4(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
3288	return;
3289	}
3290
3291	pSvmTransient->u64ExitCode = pVmcb->ctrl.u64ExitCode; /* Save the #VMEXIT reason. */
3292	HMCPU_EXIT_HISTORY_ADD(pVCpu, pVmcb->ctrl.u64ExitCode); /* Update the #VMEXIT history array. */
3293	pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
3294	pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
3295
3296	hmR0SvmSaveGuestState(pVCpu, pMixedCtx); /* Save the guest state from the VMCB to the guest-CPU context. */
3297
3298	if (RT_LIKELY(pSvmTransient->u64ExitCode != (uint64_t)SVM_EXIT_INVALID))
3299	{
3300	if (pVCpu->hm.s.svm.fSyncVTpr)
3301	{
3302	/* TPR patching (for 32-bit guests) uses LSTAR MSR for holding the TPR value, otherwise uses the VTPR. */
3303	if ( pVM->hm.s.fTPRPatchingActive
3304	&& (pMixedCtx->msrLSTAR & 0xff) != pSvmTransient->u8GuestTpr)
3305	{
3306	int rc = APICSetTpr(pVCpu, pMixedCtx->msrLSTAR & 0xff);
3307	AssertRC(rc);
3308	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
3309	}
3310	else if (pSvmTransient->u8GuestTpr != pVmcb->ctrl.IntCtrl.n.u8VTPR)
3311	{
3312	int rc = APICSetTpr(pVCpu, pVmcb->ctrl.IntCtrl.n.u8VTPR << 4);
3313	AssertRC(rc);
3314	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
3315	}
3316	}
3317	}
3318	}
3319
3320
3321	/**
3322	* Runs the guest code using AMD-V.
3323	*
3324	* @returns VBox status code.
3325	* @param pVM The cross context VM structure.
3326	* @param pVCpu The cross context virtual CPU structure.
3327	* @param pCtx Pointer to the guest-CPU context.
3328	*/
3329	static int hmR0SvmRunGuestCodeNormal(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3330	{
3331	SVMTRANSIENT SvmTransient;
3332	SvmTransient.fUpdateTscOffsetting = true;
3333	uint32_t cLoops = 0;
3334	int rc = VERR_INTERNAL_ERROR_5;
3335
3336	for (;; cLoops++)
3337	{
3338	Assert(!HMR0SuspendPending());
3339	HMSVM_ASSERT_CPU_SAFE();
3340
3341	/* Preparatory work for running guest code, this may force us to return
3342	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
3343	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
3344	rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
3345	if (rc != VINF_SUCCESS)
3346	break;
3347
3348	/*
3349	* No longjmps to ring-3 from this point on!!!
3350	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
3351	* This also disables flushing of the R0-logger instance (if any).
3352	*/
3353	hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
3354	rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
3355
3356	/* Restore any residual host-state and save any bits shared between host
3357	and guest into the guest-CPU state. Re-enables interrupts! */
3358	hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
3359
3360	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
3361	\|\| SvmTransient.u64ExitCode == (uint64_t)SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
3362	{
3363	if (rc == VINF_SUCCESS)
3364	rc = VERR_SVM_INVALID_GUEST_STATE;
3365	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
3366	hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
3367	break;
3368	}
3369
3370	/* Handle the #VMEXIT. */
3371	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
3372	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
3373	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb);
3374	rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
3375	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
3376	if (rc != VINF_SUCCESS)
3377	break;
3378	if (cLoops > pVM->hm.s.cMaxResumeLoops)
3379	{
3380	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
3381	rc = VINF_EM_RAW_INTERRUPT;
3382	break;
3383	}
3384	}
3385
3386	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
3387	return rc;
3388	}
3389
3390
3391	/**
3392	* Runs the guest code using AMD-V in single step mode.
3393	*
3394	* @returns VBox status code.
3395	* @param pVM The cross context VM structure.
3396	* @param pVCpu The cross context virtual CPU structure.
3397	* @param pCtx Pointer to the guest-CPU context.
3398	*/
3399	static int hmR0SvmRunGuestCodeStep(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3400	{
3401	SVMTRANSIENT SvmTransient;
3402	SvmTransient.fUpdateTscOffsetting = true;
3403	uint32_t cLoops = 0;
3404	int rc = VERR_INTERNAL_ERROR_5;
3405	uint16_t uCsStart = pCtx->cs.Sel;
3406	uint64_t uRipStart = pCtx->rip;
3407
3408	for (;; cLoops++)
3409	{
3410	Assert(!HMR0SuspendPending());
3411	AssertMsg(pVCpu->hm.s.idEnteredCpu == RTMpCpuId(),
3412	("Illegal migration! Entered on CPU %u Current %u cLoops=%u\n", (unsigned)pVCpu->hm.s.idEnteredCpu,
3413	(unsigned)RTMpCpuId(), cLoops));
3414
3415	/* Preparatory work for running guest code, this may force us to return
3416	to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
3417	STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
3418	rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
3419	if (rc != VINF_SUCCESS)
3420	break;
3421
3422	/*
3423	* No longjmps to ring-3 from this point on!!!
3424	* Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
3425	* This also disables flushing of the R0-logger instance (if any).
3426	*/
3427	VMMRZCallRing3Disable(pVCpu);
3428	VMMRZCallRing3RemoveNotification(pVCpu);
3429	hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
3430
3431	rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
3432
3433	/*
3434	* Restore any residual host-state and save any bits shared between host and guest into the guest-CPU state.
3435	* This will also re-enable longjmps to ring-3 when it has reached a safe point!!!
3436	*/
3437	hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
3438	if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
3439	\|\| SvmTransient.u64ExitCode == (uint64_t)SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
3440	{
3441	if (rc == VINF_SUCCESS)
3442	rc = VERR_SVM_INVALID_GUEST_STATE;
3443	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
3444	hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
3445	return rc;
3446	}
3447
3448	/* Handle the #VMEXIT. */
3449	HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
3450	STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
3451	VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb);
3452	rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
3453	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
3454	if (rc != VINF_SUCCESS)
3455	break;
3456	if (cLoops > pVM->hm.s.cMaxResumeLoops)
3457	{
3458	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
3459	rc = VINF_EM_RAW_INTERRUPT;
3460	break;
3461	}
3462
3463	/*
3464	* Did the RIP change, if so, consider it a single step.
3465	* Otherwise, make sure one of the TFs gets set.
3466	*/
3467	if ( pCtx->rip != uRipStart
3468	\|\| pCtx->cs.Sel != uCsStart)
3469	{
3470	rc = VINF_EM_DBG_STEPPED;
3471	break;
3472	}
3473	pVCpu->hm.s.fContextUseFlags \|= HM_CHANGED_GUEST_DEBUG;
3474	}
3475
3476	/*
3477	* Clear the X86_EFL_TF if necessary.
3478	*/
3479	if (pVCpu->hm.s.fClearTrapFlag)
3480	{
3481	pVCpu->hm.s.fClearTrapFlag = false;
3482	pCtx->eflags.Bits.u1TF = 0;
3483	}
3484
3485	STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
3486	return rc;
3487	}
3488
3489
3490	/**
3491	* Runs the guest code using AMD-V.
3492	*
3493	* @returns Strict VBox status code.
3494	* @param pVM The cross context VM structure.
3495	* @param pVCpu The cross context virtual CPU structure.
3496	* @param pCtx Pointer to the guest-CPU context.
3497	*/
3498	VMMR0DECL(VBOXSTRICTRC) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3499	{
3500	Assert(VMMRZCallRing3IsEnabled(pVCpu));
3501	HMSVM_ASSERT_PREEMPT_SAFE();
3502	VMMRZCallRing3SetNotification(pVCpu, hmR0SvmCallRing3Callback, pCtx);
3503
3504	int rc;
3505	if (!pVCpu->hm.s.fSingleInstruction)
3506	rc = hmR0SvmRunGuestCodeNormal(pVM, pVCpu, pCtx);
3507	else
3508	rc = hmR0SvmRunGuestCodeStep(pVM, pVCpu, pCtx);
3509
3510	if (rc == VERR_EM_INTERPRETER)
3511	rc = VINF_EM_RAW_EMULATE_INSTR;
3512	else if (rc == VINF_EM_RESET)
3513	rc = VINF_EM_TRIPLE_FAULT;
3514
3515	/* Prepare to return to ring-3. This will remove longjmp notifications. */
3516	hmR0SvmExitToRing3(pVM, pVCpu, pCtx, rc);
3517	Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
3518	return rc;
3519	}
3520
3521
3522	/**
3523	* Handles a \#VMEXIT (for all EXITCODE values except SVM_EXIT_INVALID).
3524	*
3525	* @returns VBox status code (informational status codes included).
3526	* @param pVCpu The cross context virtual CPU structure.
3527	* @param pCtx Pointer to the guest-CPU context.
3528	* @param pSvmTransient Pointer to the SVM transient structure.
3529	*/
3530	DECLINLINE(int) hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
3531	{
3532	Assert(pSvmTransient->u64ExitCode != (uint64_t)SVM_EXIT_INVALID);
3533	Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
3534
3535	/*
3536	* The ordering of the case labels is based on most-frequently-occurring #VMEXITs for most guests under
3537	* normal workloads (for some definition of "normal").
3538	*/
3539	uint32_t u32ExitCode = pSvmTransient->u64ExitCode;
3540	switch (pSvmTransient->u64ExitCode)
3541	{
3542	case SVM_EXIT_NPF:
3543	return hmR0SvmExitNestedPF(pVCpu, pCtx, pSvmTransient);
3544
3545	case SVM_EXIT_IOIO:
3546	return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
3547
3548	case SVM_EXIT_RDTSC:
3549	return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
3550
3551	case SVM_EXIT_RDTSCP:
3552	return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
3553
3554	case SVM_EXIT_CPUID:
3555	return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
3556
3557	case SVM_EXIT_EXCEPTION_E: /* X86_XCPT_PF */
3558	return hmR0SvmExitXcptPF(pVCpu, pCtx, pSvmTransient);
3559
3560	case SVM_EXIT_EXCEPTION_7: /* X86_XCPT_NM */
3561	return hmR0SvmExitXcptNM(pVCpu, pCtx, pSvmTransient);
3562
3563	case SVM_EXIT_EXCEPTION_6: /* X86_XCPT_UD */
3564	return hmR0SvmExitXcptUD(pVCpu, pCtx, pSvmTransient);
3565
3566	case SVM_EXIT_EXCEPTION_10: /* X86_XCPT_MF */
3567	return hmR0SvmExitXcptMF(pVCpu, pCtx, pSvmTransient);
3568
3569	case SVM_EXIT_EXCEPTION_1: /* X86_XCPT_DB */
3570	return hmR0SvmExitXcptDB(pVCpu, pCtx, pSvmTransient);
3571
3572	case SVM_EXIT_EXCEPTION_11: /* X86_XCPT_AC */
3573	return hmR0SvmExitXcptAC(pVCpu, pCtx, pSvmTransient);
3574
3575	case SVM_EXIT_EXCEPTION_3: /* X86_XCPT_BP */
3576	return hmR0SvmExitXcptBP(pVCpu, pCtx, pSvmTransient);
3577
3578	case SVM_EXIT_MONITOR:
3579	return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
3580
3581	case SVM_EXIT_MWAIT:
3582	return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
3583
3584	case SVM_EXIT_HLT:
3585	return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
3586
3587	case SVM_EXIT_READ_CR0:
3588	case SVM_EXIT_READ_CR3:
3589	case SVM_EXIT_READ_CR4:
3590	return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
3591
3592	case SVM_EXIT_WRITE_CR0:
3593	case SVM_EXIT_WRITE_CR3:
3594	case SVM_EXIT_WRITE_CR4:
3595	case SVM_EXIT_WRITE_CR8:
3596	return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
3597
3598	case SVM_EXIT_PAUSE:
3599	return hmR0SvmExitPause(pVCpu, pCtx, pSvmTransient);
3600
3601	case SVM_EXIT_VMMCALL:
3602	return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
3603
3604	case SVM_EXIT_VINTR:
3605	return hmR0SvmExitVIntr(pVCpu, pCtx, pSvmTransient);
3606
3607	case SVM_EXIT_INTR:
3608	case SVM_EXIT_FERR_FREEZE:
3609	case SVM_EXIT_NMI:
3610	return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
3611
3612	case SVM_EXIT_MSR:
3613	return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
3614
3615	case SVM_EXIT_INVLPG:
3616	return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
3617
3618	case SVM_EXIT_WBINVD:
3619	return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
3620
3621	case SVM_EXIT_INVD:
3622	return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
3623
3624	case SVM_EXIT_RDPMC:
3625	return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
3626
3627	default:
3628	{
3629	switch (pSvmTransient->u64ExitCode)
3630	{
3631	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
3632	case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
3633	case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
3634	case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
3635	return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
3636
3637	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
3638	case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
3639	case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
3640	case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
3641	return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
3642
3643	case SVM_EXIT_XSETBV:
3644	return hmR0SvmExitXsetbv(pVCpu, pCtx, pSvmTransient);
3645
3646	case SVM_EXIT_TASK_SWITCH:
3647	return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
3648
3649	case SVM_EXIT_IRET:
3650	return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
3651
3652	case SVM_EXIT_SHUTDOWN:
3653	return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
3654
3655	case SVM_EXIT_SMI:
3656	case SVM_EXIT_INIT:
3657	{
3658	/*
3659	* We don't intercept NMIs. As for INIT signals, it really shouldn't ever happen here. If it ever does,
3660	* we want to know about it so log the exit code and bail.
3661	*/
3662	AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
3663	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
3664	return VERR_SVM_UNEXPECTED_EXIT;
3665	}
3666
3667	case SVM_EXIT_INVLPGA:
3668	case SVM_EXIT_RSM:
3669	case SVM_EXIT_VMRUN:
3670	case SVM_EXIT_VMLOAD:
3671	case SVM_EXIT_VMSAVE:
3672	case SVM_EXIT_STGI:
3673	case SVM_EXIT_CLGI:
3674	case SVM_EXIT_SKINIT:
3675	return hmR0SvmExitSetPendingXcptUD(pVCpu, pCtx, pSvmTransient);
3676
3677	#ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
3678	case SVM_EXIT_EXCEPTION_0: /* X86_XCPT_DE */
3679	/* SVM_EXIT_EXCEPTION_1: / / X86_XCPT_DB - Handled above. */
3680	case SVM_EXIT_EXCEPTION_2: /* X86_XCPT_NMI */
3681	/* case SVM_EXIT_EXCEPTION_3: / / X86_XCPT_BP - Handled above. */
3682	case SVM_EXIT_EXCEPTION_4: /* X86_XCPT_OF */
3683	case SVM_EXIT_EXCEPTION_5: /* X86_XCPT_BR */
3684	/* case SVM_EXIT_EXCEPTION_6: / / X86_XCPT_UD - Handled above. */
3685	/* SVM_EXIT_EXCEPTION_7: / / X86_XCPT_NM - Handled above. */
3686	case SVM_EXIT_EXCEPTION_8: /* X86_XCPT_DF */
3687	case SVM_EXIT_EXCEPTION_9: /* X86_XCPT_CO_SEG_OVERRUN */
3688	case SVM_EXIT_EXCEPTION_A: /* X86_XCPT_TS */
3689	case SVM_EXIT_EXCEPTION_B: /* X86_XCPT_NP */
3690	case SVM_EXIT_EXCEPTION_C: /* X86_XCPT_SS */
3691	case SVM_EXIT_EXCEPTION_D: /* X86_XCPT_GP */
3692	/* SVM_EXIT_EXCEPTION_E: / / X86_XCPT_PF - Handled above. */
3693	/* SVM_EXIT_EXCEPTION_10: / / X86_XCPT_MF - Handled above. */
3694	/* SVM_EXIT_EXCEPTION_11: / / X86_XCPT_AC - Handled above. */
3695	case SVM_EXIT_EXCEPTION_12: /* X86_XCPT_MC */
3696	case SVM_EXIT_EXCEPTION_13: /* X86_XCPT_XF */
3697	case SVM_EXIT_EXCEPTION_F: /* Reserved */
3698	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16:
3699	case SVM_EXIT_EXCEPTION_17: case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19:
3700	case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B: case SVM_EXIT_EXCEPTION_1C:
3701	case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
3702	{
3703	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
3704	SVMEVENT Event;
3705	Event.u = 0;
3706	Event.n.u1Valid = 1;
3707	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3708	Event.n.u8Vector = pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0;
3709
3710	switch (Event.n.u8Vector)
3711	{
3712	case X86_XCPT_DE:
3713	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDE);
3714	break;
3715
3716	case X86_XCPT_NP:
3717	Event.n.u1ErrorCodeValid = 1;
3718	Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
3719	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNP);
3720	break;
3721
3722	case X86_XCPT_SS:
3723	Event.n.u1ErrorCodeValid = 1;
3724	Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
3725	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestSS);
3726	break;
3727
3728	case X86_XCPT_GP:
3729	Event.n.u1ErrorCodeValid = 1;
3730	Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
3731	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestGP);
3732	break;
3733
3734	default:
3735	AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit caused by exception %#x\n", Event.n.u8Vector));
3736	pVCpu->hm.s.u32HMError = Event.n.u8Vector;
3737	return VERR_SVM_UNEXPECTED_XCPT_EXIT;
3738	}
3739
3740	Log4(("#Xcpt: Vector=%#x at CS:RIP=%04x:%RGv\n", Event.n.u8Vector, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
3741	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3742	return VINF_SUCCESS;
3743	}
3744	#endif /* HMSVM_ALWAYS_TRAP_ALL_XCPTS */
3745
3746	default:
3747	{
3748	AssertMsgFailed(("hmR0SvmHandleExit: Unknown exit code %#x\n", u32ExitCode));
3749	pVCpu->hm.s.u32HMError = u32ExitCode;
3750	return VERR_SVM_UNKNOWN_EXIT;
3751	}
3752	}
3753	}
3754	}
3755	/* not reached */
3756	}
3757
3758
3759	#ifdef DEBUG
3760	/* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
3761	# define HMSVM_ASSERT_PREEMPT_CPUID_VAR() \
3762	RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
3763
3764	# define HMSVM_ASSERT_PREEMPT_CPUID() \
3765	do \
3766	{ \
3767	RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
3768	AssertMsg(idAssertCpu == idAssertCpuNow, ("SVM %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
3769	} while (0)
3770
3771	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() \
3772	do { \
3773	AssertPtr(pVCpu); \
3774	AssertPtr(pCtx); \
3775	AssertPtr(pSvmTransient); \
3776	Assert(ASMIntAreEnabled()); \
3777	HMSVM_ASSERT_PREEMPT_SAFE(); \
3778	HMSVM_ASSERT_PREEMPT_CPUID_VAR(); \
3779	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)); \
3780	HMSVM_ASSERT_PREEMPT_SAFE(); \
3781	if (VMMR0IsLogFlushDisabled(pVCpu)) \
3782	HMSVM_ASSERT_PREEMPT_CPUID(); \
3783	} while (0)
3784	#else /* Release builds */
3785	# define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() do { NOREF(pVCpu); NOREF(pCtx); NOREF(pSvmTransient); } while (0)
3786	#endif
3787
3788
3789	/**
3790	* Worker for hmR0SvmInterpretInvlpg().
3791	*
3792	* @return VBox status code.
3793	* @param pVCpu The cross context virtual CPU structure.
3794	* @param pCpu Pointer to the disassembler state.
3795	* @param pCtx The guest CPU context.
3796	*/
3797	static int hmR0SvmInterpretInvlPgEx(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTX pCtx)
3798	{
3799	DISQPVPARAMVAL Param1;
3800	RTGCPTR GCPtrPage;
3801
3802	int rc = DISQueryParamVal(CPUMCTX2CORE(pCtx), pCpu, &pCpu->Param1, &Param1, DISQPVWHICH_SRC);
3803	if (RT_FAILURE(rc))
3804	return VERR_EM_INTERPRETER;
3805
3806	if ( Param1.type == DISQPV_TYPE_IMMEDIATE
3807	\|\| Param1.type == DISQPV_TYPE_ADDRESS)
3808	{
3809	if (!(Param1.flags & (DISQPV_FLAG_32 \| DISQPV_FLAG_64)))
3810	return VERR_EM_INTERPRETER;
3811
3812	GCPtrPage = Param1.val.val64;
3813	VBOXSTRICTRC rc2 = EMInterpretInvlpg(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx), GCPtrPage);
3814	rc = VBOXSTRICTRC_VAL(rc2);
3815	}
3816	else
3817	{
3818	Log4(("hmR0SvmInterpretInvlPgEx invalid parameter type %#x\n", Param1.type));
3819	rc = VERR_EM_INTERPRETER;
3820	}
3821
3822	return rc;
3823	}
3824
3825
3826	/**
3827	* Interprets INVLPG.
3828	*
3829	* @returns VBox status code.
3830	* @retval VINF_* Scheduling instructions.
3831	* @retval VERR_EM_INTERPRETER Something we can't cope with.
3832	* @retval VERR_* Fatal errors.
3833	*
3834	* @param pVM The cross context VM structure.
3835	* @param pVCpu The cross context virtual CPU structure.
3836	* @param pCtx The guest CPU context.
3837	*
3838	* @remarks Updates the RIP if the instruction was executed successfully.
3839	*/
3840	static int hmR0SvmInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3841	{
3842	/* Only allow 32 & 64 bit code. */
3843	if (CPUMGetGuestCodeBits(pVCpu) != 16)
3844	{
3845	PDISSTATE pDis = &pVCpu->hm.s.DisState;
3846	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL /* pcbInstr */);
3847	if ( RT_SUCCESS(rc)
3848	&& pDis->pCurInstr->uOpcode == OP_INVLPG)
3849	{
3850	rc = hmR0SvmInterpretInvlPgEx(pVCpu, pDis, pCtx);
3851	if (RT_SUCCESS(rc))
3852	pCtx->rip += pDis->cbInstr;
3853	return rc;
3854	}
3855	else
3856	Log4(("hmR0SvmInterpretInvlpg: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
3857	}
3858	return VERR_EM_INTERPRETER;
3859	}
3860
3861
3862	/**
3863	* Sets an invalid-opcode (\#UD) exception as pending-for-injection into the VM.
3864	*
3865	* @param pVCpu The cross context virtual CPU structure.
3866	*/
3867	DECLINLINE(void) hmR0SvmSetPendingXcptUD(PVMCPU pVCpu)
3868	{
3869	SVMEVENT Event;
3870	Event.u = 0;
3871	Event.n.u1Valid = 1;
3872	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3873	Event.n.u8Vector = X86_XCPT_UD;
3874	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3875	}
3876
3877
3878	/**
3879	* Sets a debug (\#DB) exception as pending-for-injection into the VM.
3880	*
3881	* @param pVCpu The cross context virtual CPU structure.
3882	*/
3883	DECLINLINE(void) hmR0SvmSetPendingXcptDB(PVMCPU pVCpu)
3884	{
3885	SVMEVENT Event;
3886	Event.u = 0;
3887	Event.n.u1Valid = 1;
3888	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3889	Event.n.u8Vector = X86_XCPT_DB;
3890	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3891	}
3892
3893
3894	/**
3895	* Sets a page fault (\#PF) exception as pending-for-injection into the VM.
3896	*
3897	* @param pVCpu The cross context virtual CPU structure.
3898	* @param pCtx Pointer to the guest-CPU context.
3899	* @param u32ErrCode The error-code for the page-fault.
3900	* @param uFaultAddress The page fault address (CR2).
3901	*
3902	* @remarks This updates the guest CR2 with @a uFaultAddress!
3903	*/
3904	DECLINLINE(void) hmR0SvmSetPendingXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t u32ErrCode, RTGCUINTPTR uFaultAddress)
3905	{
3906	SVMEVENT Event;
3907	Event.u = 0;
3908	Event.n.u1Valid = 1;
3909	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3910	Event.n.u8Vector = X86_XCPT_PF;
3911	Event.n.u1ErrorCodeValid = 1;
3912	Event.n.u32ErrorCode = u32ErrCode;
3913
3914	/* Update CR2 of the guest. */
3915	if (pCtx->cr2 != uFaultAddress)
3916	{
3917	pCtx->cr2 = uFaultAddress;
3918	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR2);
3919	}
3920
3921	hmR0SvmSetPendingEvent(pVCpu, &Event, uFaultAddress);
3922	}
3923
3924
3925	/**
3926	* Sets a device-not-available (\#NM) exception as pending-for-injection into
3927	* the VM.
3928	*
3929	* @param pVCpu The cross context virtual CPU structure.
3930	*/
3931	DECLINLINE(void) hmR0SvmSetPendingXcptNM(PVMCPU pVCpu)
3932	{
3933	SVMEVENT Event;
3934	Event.u = 0;
3935	Event.n.u1Valid = 1;
3936	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3937	Event.n.u8Vector = X86_XCPT_NM;
3938	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3939	}
3940
3941
3942	/**
3943	* Sets a math-fault (\#MF) exception as pending-for-injection into the VM.
3944	*
3945	* @param pVCpu The cross context virtual CPU structure.
3946	*/
3947	DECLINLINE(void) hmR0SvmSetPendingXcptMF(PVMCPU pVCpu)
3948	{
3949	SVMEVENT Event;
3950	Event.u = 0;
3951	Event.n.u1Valid = 1;
3952	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3953	Event.n.u8Vector = X86_XCPT_MF;
3954	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3955	}
3956
3957
3958	/**
3959	* Sets a double fault (\#DF) exception as pending-for-injection into the VM.
3960	*
3961	* @param pVCpu The cross context virtual CPU structure.
3962	*/
3963	DECLINLINE(void) hmR0SvmSetPendingXcptDF(PVMCPU pVCpu)
3964	{
3965	SVMEVENT Event;
3966	Event.u = 0;
3967	Event.n.u1Valid = 1;
3968	Event.n.u3Type = SVM_EVENT_EXCEPTION;
3969	Event.n.u8Vector = X86_XCPT_DF;
3970	Event.n.u1ErrorCodeValid = 1;
3971	Event.n.u32ErrorCode = 0;
3972	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
3973	}
3974
3975
3976	/**
3977	* Emulates a simple MOV TPR (CR8) instruction, used for TPR patching on 32-bit
3978	* guests. This simply looks up the patch record at EIP and does the required.
3979	*
3980	* This VMMCALL is used a fallback mechanism when mov to/from cr8 isn't exactly
3981	* like how we want it to be (e.g. not followed by shr 4 as is usually done for
3982	* TPR). See hmR3ReplaceTprInstr() for the details.
3983	*
3984	* @returns VBox status code.
3985	* @retval VINF_SUCCESS if the access was handled successfully.
3986	* @retval VERR_NOT_FOUND if no patch record for this RIP could be found.
3987	* @retval VERR_SVM_UNEXPECTED_PATCH_TYPE if the found patch type is invalid.
3988	*
3989	* @param pVM The cross context VM structure.
3990	* @param pVCpu The cross context virtual CPU structure.
3991	* @param pCtx Pointer to the guest-CPU context.
3992	*/
3993	static int hmR0SvmEmulateMovTpr(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
3994	{
3995	Log4(("Emulated VMMCall TPR access replacement at RIP=%RGv\n", pCtx->rip));
3996
3997	/*
3998	* We do this in a loop as we increment the RIP after a successful emulation
3999	* and the new RIP may be a patched instruction which needs emulation as well.
4000	*/
4001	bool fPatchFound = false;
4002	for (;;)
4003	{
4004	bool fPending;
4005	uint8_t u8Tpr;
4006
4007	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
4008	if (!pPatch)
4009	break;
4010
4011	fPatchFound = true;
4012	switch (pPatch->enmType)
4013	{
4014	case HMTPRINSTR_READ:
4015	{
4016	int rc = APICGetTpr(pVCpu, &u8Tpr, &fPending, NULL /* pu8PendingIrq */);
4017	AssertRC(rc);
4018
4019	rc = DISWriteReg32(CPUMCTX2CORE(pCtx), pPatch->uDstOperand, u8Tpr);
4020	AssertRC(rc);
4021	pCtx->rip += pPatch->cbOp;
4022	break;
4023	}
4024
4025	case HMTPRINSTR_WRITE_REG:
4026	case HMTPRINSTR_WRITE_IMM:
4027	{
4028	if (pPatch->enmType == HMTPRINSTR_WRITE_REG)
4029	{
4030	uint32_t u32Val;
4031	int rc = DISFetchReg32(CPUMCTX2CORE(pCtx), pPatch->uSrcOperand, &u32Val);
4032	AssertRC(rc);
4033	u8Tpr = u32Val;
4034	}
4035	else
4036	u8Tpr = (uint8_t)pPatch->uSrcOperand;
4037
4038	int rc2 = APICSetTpr(pVCpu, u8Tpr);
4039	AssertRC(rc2);
4040	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4041
4042	pCtx->rip += pPatch->cbOp;
4043	break;
4044	}
4045
4046	default:
4047	AssertMsgFailed(("Unexpected patch type %d\n", pPatch->enmType));
4048	pVCpu->hm.s.u32HMError = pPatch->enmType;
4049	return VERR_SVM_UNEXPECTED_PATCH_TYPE;
4050	}
4051	}
4052
4053	if (fPatchFound)
4054	return VINF_SUCCESS;
4055	return VERR_NOT_FOUND;
4056	}
4057
4058
4059	/**
4060	* Determines if an exception is a contributory exception.
4061	*
4062	* Contributory exceptions are ones which can cause double-faults unless the
4063	* original exception was a benign exception. Page-fault is intentionally not
4064	* included here as it's a conditional contributory exception.
4065	*
4066	* @returns true if the exception is contributory, false otherwise.
4067	* @param uVector The exception vector.
4068	*/
4069	DECLINLINE(bool) hmR0SvmIsContributoryXcpt(const uint32_t uVector)
4070	{
4071	switch (uVector)
4072	{
4073	case X86_XCPT_GP:
4074	case X86_XCPT_SS:
4075	case X86_XCPT_NP:
4076	case X86_XCPT_TS:
4077	case X86_XCPT_DE:
4078	return true;
4079	default:
4080	break;
4081	}
4082	return false;
4083	}
4084
4085
4086	/**
4087	* Handle a condition that occurred while delivering an event through the guest
4088	* IDT.
4089	*
4090	* @returns VBox status code (informational error codes included).
4091	* @retval VINF_SUCCESS if we should continue handling the \#VMEXIT.
4092	* @retval VINF_HM_DOUBLE_FAULT if a \#DF condition was detected and we ought to
4093	* continue execution of the guest which will delivery the \#DF.
4094	* @retval VINF_EM_RESET if we detected a triple-fault condition.
4095	* @retval VERR_EM_GUEST_CPU_HANG if we detected a guest CPU hang.
4096	*
4097	* @param pVCpu The cross context virtual CPU structure.
4098	* @param pCtx Pointer to the guest-CPU context.
4099	* @param pSvmTransient Pointer to the SVM transient structure.
4100	*
4101	* @remarks No-long-jump zone!!!
4102	*/
4103	static int hmR0SvmCheckExitDueToEventDelivery(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4104	{
4105	int rc = VINF_SUCCESS;
4106	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4107
4108	Log4(("EXITINTINFO: Pending vectoring event %#RX64 Valid=%RTbool ErrValid=%RTbool Err=%#RX32 Type=%u Vector=%u\n",
4109	pVmcb->ctrl.ExitIntInfo.u, !!pVmcb->ctrl.ExitIntInfo.n.u1Valid, !!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid,
4110	pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, pVmcb->ctrl.ExitIntInfo.n.u3Type, pVmcb->ctrl.ExitIntInfo.n.u8Vector));
4111
4112	/* See AMD spec. 15.7.3 "EXITINFO Pseudo-Code". The EXITINTINFO (if valid) contains the prior exception (IDT vector)
4113	* that was trying to be delivered to the guest which caused a #VMEXIT which was intercepted (Exit vector). */
4114	if (pVmcb->ctrl.ExitIntInfo.n.u1Valid)
4115	{
4116	uint8_t uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
4117
4118	typedef enum
4119	{
4120	SVMREFLECTXCPT_XCPT, /* Reflect the exception to the guest or for further evaluation by VMM. */
4121	SVMREFLECTXCPT_DF, /* Reflect the exception as a double-fault to the guest. */
4122	SVMREFLECTXCPT_TF, /* Indicate a triple faulted state to the VMM. */
4123	SVMREFLECTXCPT_HANG, /* Indicate bad VM trying to deadlock the CPU. */
4124	SVMREFLECTXCPT_NONE /* Nothing to reflect. */
4125	} SVMREFLECTXCPT;
4126
4127	SVMREFLECTXCPT enmReflect = SVMREFLECTXCPT_NONE;
4128	bool fReflectingNmi = false;
4129	if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION)
4130	{
4131	if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_1F)
4132	{
4133	uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
4134
4135	#ifdef VBOX_STRICT
4136	if ( hmR0SvmIsContributoryXcpt(uIdtVector)
4137	&& uExitVector == X86_XCPT_PF)
4138	{
4139	Log4(("IDT: Contributory #PF idCpu=%u uCR2=%#RX64\n", pVCpu->idCpu, pCtx->cr2));
4140	}
4141	#endif
4142
4143	if ( uIdtVector == X86_XCPT_BP
4144	\|\| uIdtVector == X86_XCPT_OF)
4145	{
4146	/* Ignore INT3/INTO, just re-execute. See @bugref{8357}. */
4147	}
4148	else if ( uExitVector == X86_XCPT_PF
4149	&& uIdtVector == X86_XCPT_PF)
4150	{
4151	pSvmTransient->fVectoringDoublePF = true;
4152	Log4(("IDT: Vectoring double #PF uCR2=%#RX64\n", pCtx->cr2));
4153	}
4154	else if ( uExitVector == X86_XCPT_AC
4155	&& uIdtVector == X86_XCPT_AC)
4156	{
4157	enmReflect = SVMREFLECTXCPT_HANG;
4158	Log4(("IDT: Nested #AC - Bad guest\n"));
4159	}
4160	else if ( (pVmcb->ctrl.u32InterceptException & HMSVM_CONTRIBUTORY_XCPT_MASK)
4161	&& hmR0SvmIsContributoryXcpt(uExitVector)
4162	&& ( hmR0SvmIsContributoryXcpt(uIdtVector)
4163	\|\| uIdtVector == X86_XCPT_PF))
4164	{
4165	enmReflect = SVMREFLECTXCPT_DF;
4166	Log4(("IDT: Pending vectoring #DF %#RX64 uIdtVector=%#x uExitVector=%#x\n", pVCpu->hm.s.Event.u64IntInfo,
4167	uIdtVector, uExitVector));
4168	}
4169	else if (uIdtVector == X86_XCPT_DF)
4170	{
4171	enmReflect = SVMREFLECTXCPT_TF;
4172	Log4(("IDT: Pending vectoring triple-fault %#RX64 uIdtVector=%#x uExitVector=%#x\n",
4173	pVCpu->hm.s.Event.u64IntInfo, uIdtVector, uExitVector));
4174	}
4175	else
4176	enmReflect = SVMREFLECTXCPT_XCPT;
4177	}
4178	else
4179	{
4180	/*
4181	* If event delivery caused an #VMEXIT that is not an exception (e.g. #NPF) then reflect the original
4182	* exception to the guest after handling the #VMEXIT.
4183	*/
4184	enmReflect = SVMREFLECTXCPT_XCPT;
4185	}
4186	}
4187	else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXTERNAL_IRQ
4188	\|\| pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
4189	{
4190	enmReflect = SVMREFLECTXCPT_XCPT;
4191	fReflectingNmi = RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI);
4192
4193	if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_1F)
4194	{
4195	uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
4196	if (uExitVector == X86_XCPT_PF)
4197	{
4198	pSvmTransient->fVectoringPF = true;
4199	Log4(("IDT: Vectoring #PF due to Ext-Int/NMI. uCR2=%#RX64\n", pCtx->cr2));
4200	}
4201	}
4202	}
4203	/* else: Ignore software interrupts (INT n) as they reoccur when restarting the instruction. */
4204
4205	switch (enmReflect)
4206	{
4207	case SVMREFLECTXCPT_XCPT:
4208	{
4209	/* If we are re-injecting the NMI, clear NMI blocking. */
4210	if (fReflectingNmi)
4211	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
4212
4213	Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
4214	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
4215	hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, 0 /* GCPtrFaultAddress */);
4216
4217	/* If uExitVector is #PF, CR2 value will be updated from the VMCB if it's a guest #PF. See hmR0SvmExitXcptPF(). */
4218	Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32\n", pVmcb->ctrl.ExitIntInfo.u,
4219	!!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid, pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
4220	break;
4221	}
4222
4223	case SVMREFLECTXCPT_DF:
4224	{
4225	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
4226	hmR0SvmSetPendingXcptDF(pVCpu);
4227	rc = VINF_HM_DOUBLE_FAULT;
4228	break;
4229	}
4230
4231	case SVMREFLECTXCPT_TF:
4232	{
4233	rc = VINF_EM_RESET;
4234	break;
4235	}
4236
4237	case SVMREFLECTXCPT_HANG:
4238	{
4239	rc = VERR_EM_GUEST_CPU_HANG;
4240	break;
4241	}
4242
4243	default:
4244	Assert(rc == VINF_SUCCESS);
4245	break;
4246	}
4247	}
4248	Assert(rc == VINF_SUCCESS \|\| rc == VINF_HM_DOUBLE_FAULT \|\| rc == VINF_EM_RESET \|\| rc == VERR_EM_GUEST_CPU_HANG);
4249	NOREF(pCtx);
4250	return rc;
4251	}
4252
4253	/**
4254	* Updates interrupt shadow for the current RIP.
4255	*/
4256	#define HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx) \
4257	do { \
4258	/* Update interrupt shadow. */ \
4259	if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS) \
4260	&& pCtx->rip != EMGetInhibitInterruptsPC(pVCpu)) \
4261	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS); \
4262	} while (0)
4263
4264	/**
4265	* Advances the guest RIP making use of the CPU's NRIP_SAVE feature if
4266	* supported, otherwise advances the RIP by the number of bytes specified in
4267	* @a cb.
4268	*
4269	* @param pVCpu The cross context virtual CPU structure.
4270	* @param pCtx Pointer to the guest-CPU context.
4271	* @param cb RIP increment value in bytes.
4272	*
4273	* @remarks Use this function only from \#VMEXIT's where the NRIP value is valid
4274	* when NRIP_SAVE is supported by the CPU, otherwise use
4275	* hmR0SvmAdvanceRipDumb!
4276	*/
4277	DECLINLINE(void) hmR0SvmAdvanceRipHwAssist(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
4278	{
4279	if (pVCpu->CTX_SUFF(pVM)->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4280	{
4281	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4282	Assert(pVmcb->ctrl.u64NextRIP);
4283	Assert(pVmcb->ctrl.u64NextRIP - pCtx->rip == cb);
4284	pCtx->rip = pVmcb->ctrl.u64NextRIP;
4285	}
4286	else
4287	pCtx->rip += cb;
4288
4289	HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx);
4290	}
4291
4292
4293	/**
4294	* Advances the guest RIP by the number of bytes specified in @a cb. This does
4295	* not make use of any hardware features to determine the instruction length.
4296	*
4297	* @param pVCpu The cross context virtual CPU structure.
4298	* @param pCtx Pointer to the guest-CPU context.
4299	* @param cb RIP increment value in bytes.
4300	*/
4301	DECLINLINE(void) hmR0SvmAdvanceRipDumb(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
4302	{
4303	pCtx->rip += cb;
4304	HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx);
4305	}
4306	#undef HMSVM_UPDATE_INTR_SHADOW
4307
4308
4309	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
4310	/* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #VMEXIT handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
4311	/* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
4312
4313	/** @name \#VMEXIT handlers.
4314	* @{
4315	*/
4316
4317	/**
4318	* \#VMEXIT handler for external interrupts, NMIs, FPU assertion freeze and INIT
4319	* signals (SVM_EXIT_INTR, SVM_EXIT_NMI, SVM_EXIT_FERR_FREEZE, SVM_EXIT_INIT).
4320	*/
4321	HMSVM_EXIT_DECL hmR0SvmExitIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4322	{
4323	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4324
4325	if (pSvmTransient->u64ExitCode == SVM_EXIT_NMI)
4326	STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
4327	else if (pSvmTransient->u64ExitCode == SVM_EXIT_INTR)
4328	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
4329
4330	/*
4331	* AMD-V has no preemption timer and the generic periodic preemption timer has no way to signal -before- the timer
4332	* fires if the current interrupt is our own timer or a some other host interrupt. We also cannot examine what
4333	* interrupt it is until the host actually take the interrupt.
4334	*
4335	* Going back to executing guest code here unconditionally causes random scheduling problems (observed on an
4336	* AMD Phenom 9850 Quad-Core on Windows 64-bit host).
4337	*/
4338	return VINF_EM_RAW_INTERRUPT;
4339	}
4340
4341
4342	/**
4343	* \#VMEXIT handler for WBINVD (SVM_EXIT_WBINVD). Conditional \#VMEXIT.
4344	*/
4345	HMSVM_EXIT_DECL hmR0SvmExitWbinvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4346	{
4347	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4348
4349	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
4350	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWbinvd);
4351	int rc = VINF_SUCCESS;
4352	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4353	return rc;
4354	}
4355
4356
4357	/**
4358	* \#VMEXIT handler for INVD (SVM_EXIT_INVD). Unconditional \#VMEXIT.
4359	*/
4360	HMSVM_EXIT_DECL hmR0SvmExitInvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4361	{
4362	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4363
4364	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
4365	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvd);
4366	int rc = VINF_SUCCESS;
4367	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4368	return rc;
4369	}
4370
4371
4372	/**
4373	* \#VMEXIT handler for INVD (SVM_EXIT_CPUID). Conditional \#VMEXIT.
4374	*/
4375	HMSVM_EXIT_DECL hmR0SvmExitCpuid(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4376	{
4377	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4378	PVM pVM = pVCpu->CTX_SUFF(pVM);
4379	int rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4380	if (RT_LIKELY(rc == VINF_SUCCESS))
4381	{
4382	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
4383	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4384	}
4385	else
4386	{
4387	AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
4388	rc = VERR_EM_INTERPRETER;
4389	}
4390	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCpuid);
4391	return rc;
4392	}
4393
4394
4395	/**
4396	* \#VMEXIT handler for RDTSC (SVM_EXIT_RDTSC). Conditional \#VMEXIT.
4397	*/
4398	HMSVM_EXIT_DECL hmR0SvmExitRdtsc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4399	{
4400	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4401	PVM pVM = pVCpu->CTX_SUFF(pVM);
4402	int rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4403	if (RT_LIKELY(rc == VINF_SUCCESS))
4404	{
4405	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
4406	pSvmTransient->fUpdateTscOffsetting = true;
4407
4408	/* Single step check. */
4409	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4410	}
4411	else
4412	{
4413	AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtsc failed with %Rrc\n", rc));
4414	rc = VERR_EM_INTERPRETER;
4415	}
4416	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtsc);
4417	return rc;
4418	}
4419
4420
4421	/**
4422	* \#VMEXIT handler for RDTSCP (SVM_EXIT_RDTSCP). Conditional \#VMEXIT.
4423	*/
4424	HMSVM_EXIT_DECL hmR0SvmExitRdtscp(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4425	{
4426	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4427	int rc = EMInterpretRdtscp(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
4428	if (RT_LIKELY(rc == VINF_SUCCESS))
4429	{
4430	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
4431	pSvmTransient->fUpdateTscOffsetting = true;
4432	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4433	}
4434	else
4435	{
4436	AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtscp failed with %Rrc\n", rc));
4437	rc = VERR_EM_INTERPRETER;
4438	}
4439	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtscp);
4440	return rc;
4441	}
4442
4443
4444	/**
4445	* \#VMEXIT handler for RDPMC (SVM_EXIT_RDPMC). Conditional \#VMEXIT.
4446	*/
4447	HMSVM_EXIT_DECL hmR0SvmExitRdpmc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4448	{
4449	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4450	int rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
4451	if (RT_LIKELY(rc == VINF_SUCCESS))
4452	{
4453	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
4454	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4455	}
4456	else
4457	{
4458	AssertMsgFailed(("hmR0SvmExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
4459	rc = VERR_EM_INTERPRETER;
4460	}
4461	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdpmc);
4462	return rc;
4463	}
4464
4465
4466	/**
4467	* \#VMEXIT handler for INVLPG (SVM_EXIT_INVLPG). Conditional \#VMEXIT.
4468	*/
4469	HMSVM_EXIT_DECL hmR0SvmExitInvlpg(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4470	{
4471	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4472	PVM pVM = pVCpu->CTX_SUFF(pVM);
4473	Assert(!pVM->hm.s.fNestedPaging);
4474
4475	/** @todo Decode Assist. */
4476	int rc = hmR0SvmInterpretInvlpg(pVM, pVCpu, pCtx); /* Updates RIP if successful. */
4477	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpg);
4478	Assert(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER);
4479	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4480	return rc;
4481	}
4482
4483
4484	/**
4485	* \#VMEXIT handler for HLT (SVM_EXIT_HLT). Conditional \#VMEXIT.
4486	*/
4487	HMSVM_EXIT_DECL hmR0SvmExitHlt(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4488	{
4489	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4490
4491	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 1);
4492	int rc = EMShouldContinueAfterHalt(pVCpu, pCtx) ? VINF_SUCCESS : VINF_EM_HALT;
4493	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4494	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitHlt);
4495	if (rc != VINF_SUCCESS)
4496	STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHltToR3);
4497	return rc;
4498	}
4499
4500
4501	/**
4502	* \#VMEXIT handler for MONITOR (SVM_EXIT_MONITOR). Conditional \#VMEXIT.
4503	*/
4504	HMSVM_EXIT_DECL hmR0SvmExitMonitor(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4505	{
4506	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4507	int rc = EMInterpretMonitor(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
4508	if (RT_LIKELY(rc == VINF_SUCCESS))
4509	{
4510	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
4511	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4512	}
4513	else
4514	{
4515	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMonitor: EMInterpretMonitor failed with %Rrc\n", rc));
4516	rc = VERR_EM_INTERPRETER;
4517	}
4518	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMonitor);
4519	return rc;
4520	}
4521
4522
4523	/**
4524	* \#VMEXIT handler for MWAIT (SVM_EXIT_MWAIT). Conditional \#VMEXIT.
4525	*/
4526	HMSVM_EXIT_DECL hmR0SvmExitMwait(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4527	{
4528	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4529	VBOXSTRICTRC rc2 = EMInterpretMWait(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
4530	int rc = VBOXSTRICTRC_VAL(rc2);
4531	if ( rc == VINF_EM_HALT
4532	\|\| rc == VINF_SUCCESS)
4533	{
4534	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
4535
4536	if ( rc == VINF_EM_HALT
4537	&& EMMonitorWaitShouldContinue(pVCpu, pCtx))
4538	{
4539	rc = VINF_SUCCESS;
4540	}
4541	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4542	}
4543	else
4544	{
4545	AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMwait: EMInterpretMWait failed with %Rrc\n", rc));
4546	rc = VERR_EM_INTERPRETER;
4547	}
4548	AssertMsg(rc == VINF_SUCCESS \|\| rc == VINF_EM_HALT \|\| rc == VERR_EM_INTERPRETER,
4549	("hmR0SvmExitMwait: EMInterpretMWait failed rc=%Rrc\n", rc));
4550	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMwait);
4551	return rc;
4552	}
4553
4554
4555	/**
4556	* \#VMEXIT handler for shutdown (triple-fault) (SVM_EXIT_SHUTDOWN). Conditional
4557	* \#VMEXIT.
4558	*/
4559	HMSVM_EXIT_DECL hmR0SvmExitShutdown(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4560	{
4561	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4562	return VINF_EM_RESET;
4563	}
4564
4565
4566	/**
4567	* \#VMEXIT handler for CRx reads (SVM_EXIT_READ_CR*). Conditional \#VMEXIT.
4568	*/
4569	HMSVM_EXIT_DECL hmR0SvmExitReadCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4570	{
4571	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4572
4573	Log4(("hmR0SvmExitReadCRx: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
4574
4575	/** @todo Decode Assist. */
4576	VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
4577	int rc = VBOXSTRICTRC_VAL(rc2);
4578	AssertMsg(rc == VINF_SUCCESS \|\| rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3,
4579	("hmR0SvmExitReadCRx: EMInterpretInstruction failed rc=%Rrc\n", rc));
4580	Assert((pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0) <= 15);
4581	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCRxRead[pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0]);
4582	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4583	return rc;
4584	}
4585
4586
4587	/**
4588	* \#VMEXIT handler for CRx writes (SVM_EXIT_WRITE_CR*). Conditional \#VMEXIT.
4589	*/
4590	HMSVM_EXIT_DECL hmR0SvmExitWriteCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4591	{
4592	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4593
4594	/** @todo Decode Assist. */
4595	VBOXSTRICTRC rcStrict = IEMExecOneBypassEx(pVCpu, CPUMCTX2CORE(pCtx), NULL);
4596	if (RT_UNLIKELY( rcStrict == VERR_IEM_ASPECT_NOT_IMPLEMENTED
4597	\|\| rcStrict == VERR_IEM_INSTR_NOT_IMPLEMENTED))
4598	rcStrict = VERR_EM_INTERPRETER;
4599	if (rcStrict == VINF_SUCCESS)
4600	{
4601	/* RIP has been updated by EMInterpretInstruction(). */
4602	Assert((pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0) <= 15);
4603	switch (pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0)
4604	{
4605	case 0: /* CR0. */
4606	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
4607	break;
4608
4609	case 3: /* CR3. */
4610	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
4611	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR3);
4612	break;
4613
4614	case 4: /* CR4. */
4615	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR4);
4616	break;
4617
4618	case 8: /* CR8 (TPR). */
4619	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4620	break;
4621
4622	default:
4623	AssertMsgFailed(("hmR0SvmExitWriteCRx: Invalid/Unexpected Write-CRx exit. u64ExitCode=%#RX64 %#x\n",
4624	pSvmTransient->u64ExitCode, pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0));
4625	break;
4626	}
4627	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
4628	}
4629	else
4630	Assert(rcStrict == VERR_EM_INTERPRETER \|\| rcStrict == VINF_PGM_CHANGE_MODE \|\| rcStrict == VINF_PGM_SYNC_CR3);
4631	return VBOXSTRICTRC_TODO(rcStrict);
4632	}
4633
4634
4635	/**
4636	* \#VMEXIT handler for instructions that result in a \#UD exception delivered
4637	* to the guest.
4638	*/
4639	HMSVM_EXIT_DECL hmR0SvmExitSetPendingXcptUD(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4640	{
4641	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4642	hmR0SvmSetPendingXcptUD(pVCpu);
4643	return VINF_SUCCESS;
4644	}
4645
4646
4647	/**
4648	* \#VMEXIT handler for MSR read and writes (SVM_EXIT_MSR). Conditional
4649	* \#VMEXIT.
4650	*/
4651	HMSVM_EXIT_DECL hmR0SvmExitMsr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4652	{
4653	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4654	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4655	PVM pVM = pVCpu->CTX_SUFF(pVM);
4656
4657	int rc;
4658	if (pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
4659	{
4660	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
4661
4662	/* Handle TPR patching; intercepted LSTAR write. */
4663	if ( pVM->hm.s.fTPRPatchingActive
4664	&& pCtx->ecx == MSR_K8_LSTAR)
4665	{
4666	if ((pCtx->eax & 0xff) != pSvmTransient->u8GuestTpr)
4667	{
4668	/* Our patch code uses LSTAR for TPR caching for 32-bit guests. */
4669	int rc2 = APICSetTpr(pVCpu, pCtx->eax & 0xff);
4670	AssertRC(rc2);
4671	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4672	}
4673	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
4674	rc = VINF_SUCCESS;
4675	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4676	return rc;
4677	}
4678
4679	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4680	{
4681	rc = EMInterpretWrmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4682	if (RT_LIKELY(rc == VINF_SUCCESS))
4683	{
4684	pCtx->rip = pVmcb->ctrl.u64NextRIP;
4685	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4686	}
4687	else
4688	AssertMsg( rc == VERR_EM_INTERPRETER
4689	\|\| rc == VINF_CPUM_R3_MSR_WRITE, ("hmR0SvmExitMsr: EMInterpretWrmsr failed rc=%Rrc\n", rc));
4690	}
4691	else
4692	{
4693	rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */));
4694	if (RT_LIKELY(rc == VINF_SUCCESS))
4695	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc); /* RIP updated by EMInterpretInstruction(). */
4696	else
4697	AssertMsg( rc == VERR_EM_INTERPRETER
4698	\|\| rc == VINF_CPUM_R3_MSR_WRITE, ("hmR0SvmExitMsr: WrMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
4699	}
4700
4701	if (rc == VINF_SUCCESS)
4702	{
4703	/* If this is an X2APIC WRMSR access, update the APIC state as well. */
4704	if ( pCtx->ecx >= MSR_IA32_X2APIC_START
4705	&& pCtx->ecx <= MSR_IA32_X2APIC_END)
4706	{
4707	/*
4708	* We've already saved the APIC related guest-state (TPR) in hmR0SvmPostRunGuest(). When full APIC register
4709	* virtualization is implemented we'll have to make sure APIC state is saved from the VMCB before
4710	* EMInterpretWrmsr() changes it.
4711	*/
4712	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
4713	}
4714	else if (pCtx->ecx == MSR_K6_EFER)
4715	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
4716	else if (pCtx->ecx == MSR_IA32_TSC)
4717	pSvmTransient->fUpdateTscOffsetting = true;
4718	}
4719	}
4720	else
4721	{
4722	/* MSR Read access. */
4723	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
4724	Assert(pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_READ);
4725
4726	if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4727	{
4728	rc = EMInterpretRdmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
4729	if (RT_LIKELY(rc == VINF_SUCCESS))
4730	{
4731	pCtx->rip = pVmcb->ctrl.u64NextRIP;
4732	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4733	}
4734	else
4735	AssertMsg( rc == VERR_EM_INTERPRETER
4736	\|\| rc == VINF_CPUM_R3_MSR_READ, ("hmR0SvmExitMsr: EMInterpretRdmsr failed rc=%Rrc\n", rc));
4737	}
4738	else
4739	{
4740	rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0));
4741	if (RT_UNLIKELY(rc != VINF_SUCCESS))
4742	{
4743	AssertMsg( rc == VERR_EM_INTERPRETER
4744	\|\| rc == VINF_CPUM_R3_MSR_READ, ("hmR0SvmExitMsr: RdMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
4745	}
4746	/* RIP updated by EMInterpretInstruction(). */
4747	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4748	}
4749	}
4750
4751	/* RIP has been updated by EMInterpret[Rd\|Wr]msr(). */
4752	return rc;
4753	}
4754
4755
4756	/**
4757	* \#VMEXIT handler for DRx read (SVM_EXIT_READ_DRx). Conditional \#VMEXIT.
4758	*/
4759	HMSVM_EXIT_DECL hmR0SvmExitReadDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4760	{
4761	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4762	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
4763
4764	/* We should -not- get this #VMEXIT if the guest's debug registers were active. */
4765	if (pSvmTransient->fWasGuestDebugStateActive)
4766	{
4767	AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
4768	pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
4769	return VERR_SVM_UNEXPECTED_EXIT;
4770	}
4771
4772	/*
4773	* Lazy DR0-3 loading.
4774	*/
4775	if (!pSvmTransient->fWasHyperDebugStateActive)
4776	{
4777	Assert(!DBGFIsStepping(pVCpu)); Assert(!pVCpu->hm.s.fSingleInstruction);
4778	Log5(("hmR0SvmExitReadDRx: Lazy loading guest debug registers\n"));
4779
4780	/* Don't intercept DRx read and writes. */
4781	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4782	pVmcb->ctrl.u16InterceptRdDRx = 0;
4783	pVmcb->ctrl.u16InterceptWrDRx = 0;
4784	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
4785
4786	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
4787	VMMRZCallRing3Disable(pVCpu);
4788	HM_DISABLE_PREEMPT();
4789
4790	/* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
4791	CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
4792	Assert(CPUMIsGuestDebugStateActive(pVCpu) \|\| HC_ARCH_BITS == 32);
4793
4794	HM_RESTORE_PREEMPT();
4795	VMMRZCallRing3Enable(pVCpu);
4796
4797	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
4798	return VINF_SUCCESS;
4799	}
4800
4801	/*
4802	* Interpret the read/writing of DRx.
4803	*/
4804	/** @todo Decode assist. */
4805	VBOXSTRICTRC rc = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
4806	Log5(("hmR0SvmExitReadDRx: Emulated DRx access: rc=%Rrc\n", VBOXSTRICTRC_VAL(rc)));
4807	if (RT_LIKELY(rc == VINF_SUCCESS))
4808	{
4809	/* Not necessary for read accesses but whatever doesn't hurt for now, will be fixed with decode assist. */
4810	/** @todo CPUM should set this flag! */
4811	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
4812	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
4813	}
4814	else
4815	Assert(rc == VERR_EM_INTERPRETER);
4816	return VBOXSTRICTRC_TODO(rc);
4817	}
4818
4819
4820	/**
4821	* \#VMEXIT handler for DRx write (SVM_EXIT_WRITE_DRx). Conditional \#VMEXIT.
4822	*/
4823	HMSVM_EXIT_DECL hmR0SvmExitWriteDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4824	{
4825	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4826	/* For now it's the same since we interpret the instruction anyway. Will change when using of Decode Assist is implemented. */
4827	int rc = hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
4828	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
4829	STAM_COUNTER_DEC(&pVCpu->hm.s.StatExitDRxRead);
4830	return rc;
4831	}
4832
4833
4834	/**
4835	* \#VMEXIT handler for XCRx write (SVM_EXIT_XSETBV). Conditional \#VMEXIT.
4836	*/
4837	HMSVM_EXIT_DECL hmR0SvmExitXsetbv(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4838	{
4839	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4840
4841	/** @todo decode assists... */
4842	VBOXSTRICTRC rcStrict = IEMExecOne(pVCpu);
4843	if (rcStrict == VINF_IEM_RAISED_XCPT)
4844	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
4845
4846	pVCpu->hm.s.fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
4847	Log4(("hmR0SvmExitXsetbv: New XCR0=%#RX64 fLoadSaveGuestXcr0=%d (cr4=%RX64) rcStrict=%Rrc\n",
4848	pCtx->aXcr[0], pVCpu->hm.s.fLoadSaveGuestXcr0, pCtx->cr4, VBOXSTRICTRC_VAL(rcStrict)));
4849
4850	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
4851	return VBOXSTRICTRC_TODO(rcStrict);
4852	}
4853
4854
4855	/**
4856	* \#VMEXIT handler for I/O instructions (SVM_EXIT_IOIO). Conditional \#VMEXIT.
4857	*/
4858	HMSVM_EXIT_DECL hmR0SvmExitIOInstr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
4859	{
4860	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
4861
4862	/* I/O operation lookup arrays. */
4863	static uint32_t const s_aIOSize[8] = { 0, 1, 2, 0, 4, 0, 0, 0 }; /* Size of the I/O accesses in bytes. */
4864	static uint32_t const s_aIOOpAnd[8] = { 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 }; /* AND masks for saving
4865	the result (in AL/AX/EAX). */
4866	Log4(("hmR0SvmExitIOInstr: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
4867
4868	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
4869	PVM pVM = pVCpu->CTX_SUFF(pVM);
4870
4871	/* Refer AMD spec. 15.10.2 "IN and OUT Behaviour" and Figure 15-2. "EXITINFO1 for IOIO Intercept" for the format. */
4872	SVMIOIOEXIT IoExitInfo;
4873	IoExitInfo.u = (uint32_t)pVmcb->ctrl.u64ExitInfo1;
4874	uint32_t uIOWidth = (IoExitInfo.u >> 4) & 0x7;
4875	uint32_t cbValue = s_aIOSize[uIOWidth];
4876	uint32_t uAndVal = s_aIOOpAnd[uIOWidth];
4877
4878	if (RT_UNLIKELY(!cbValue))
4879	{
4880	AssertMsgFailed(("hmR0SvmExitIOInstr: Invalid IO operation. uIOWidth=%u\n", uIOWidth));
4881	return VERR_EM_INTERPRETER;
4882	}
4883
4884	VBOXSTRICTRC rcStrict;
4885	bool fUpdateRipAlready = false;
4886	if (IoExitInfo.n.u1STR)
4887	{
4888	#ifdef VBOX_WITH_2ND_IEM_STEP
4889	/* INS/OUTS - I/O String instruction. */
4890	/** @todo Huh? why can't we use the segment prefix information given by AMD-V
4891	* in EXITINFO1? Investigate once this thing is up and running. */
4892	Log4(("CS:RIP=%04x:%08RX64 %#06x/%u %c str\n", pCtx->cs.Sel, pCtx->rip, IoExitInfo.n.u16Port, cbValue,
4893	IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? 'w' : 'r'));
4894	AssertReturn(pCtx->dx == IoExitInfo.n.u16Port, VERR_SVM_IPE_2);
4895	static IEMMODE const s_aenmAddrMode[8] =
4896	{
4897	(IEMMODE)-1, IEMMODE_16BIT, IEMMODE_32BIT, (IEMMODE)-1, IEMMODE_64BIT, (IEMMODE)-1, (IEMMODE)-1, (IEMMODE)-1
4898	};
4899	IEMMODE enmAddrMode = s_aenmAddrMode[(IoExitInfo.u >> 7) & 0x7];
4900	if (enmAddrMode != (IEMMODE)-1)
4901	{
4902	uint64_t cbInstr = pVmcb->ctrl.u64ExitInfo2 - pCtx->rip;
4903	if (cbInstr <= 15 && cbInstr >= 1)
4904	{
4905	Assert(cbInstr >= 1U + IoExitInfo.n.u1REP);
4906	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
4907	{
4908	/* Don't know exactly how to detect whether u3SEG is valid, currently
4909	only enabling it for Bulldozer and later with NRIP. OS/2 broke on
4910	2384 Opterons when only checking NRIP. */
4911	if ( (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
4912	&& pVM->cpum.ro.GuestFeatures.enmMicroarch >= kCpumMicroarch_AMD_15h_First)
4913	{
4914	AssertMsg(IoExitInfo.n.u3SEG == X86_SREG_DS \|\| cbInstr > 1U + IoExitInfo.n.u1REP,
4915	("u32Seg=%d cbInstr=%d u1REP=%d", IoExitInfo.n.u3SEG, cbInstr, IoExitInfo.n.u1REP));
4916	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1REP, (uint8_t)cbInstr,
4917	IoExitInfo.n.u3SEG, true /fIoChecked/);
4918	}
4919	else if (cbInstr == 1U + IoExitInfo.n.u1REP)
4920	rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1REP, (uint8_t)cbInstr,
4921	X86_SREG_DS, true /fIoChecked/);
4922	else
4923	rcStrict = IEMExecOne(pVCpu);
4924	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
4925	}
4926	else
4927	{
4928	AssertMsg(IoExitInfo.n.u3SEG == X86_SREG_ES /=0/, ("%#x\n", IoExitInfo.n.u3SEG));
4929	rcStrict = IEMExecStringIoRead(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1REP, (uint8_t)cbInstr,
4930	true /fIoChecked/);
4931	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
4932	}
4933	}
4934	else
4935	{
4936	AssertMsgFailed(("rip=%RX64 nrip=%#RX64 cbInstr=%#RX64\n", pCtx->rip, pVmcb->ctrl.u64ExitInfo2, cbInstr));
4937	rcStrict = IEMExecOne(pVCpu);
4938	}
4939	}
4940	else
4941	{
4942	AssertMsgFailed(("IoExitInfo=%RX64\n", IoExitInfo.u));
4943	rcStrict = IEMExecOne(pVCpu);
4944	}
4945	fUpdateRipAlready = true;
4946
4947	#else
4948	/* INS/OUTS - I/O String instruction. */
4949	PDISCPUSTATE pDis = &pVCpu->hm.s.DisState;
4950
4951	/** @todo Huh? why can't we use the segment prefix information given by AMD-V
4952	* in EXITINFO1? Investigate once this thing is up and running. */
4953
4954	rcStrict = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL);
4955	if (rcStrict == VINF_SUCCESS)
4956	{
4957	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
4958	{
4959	rcStrict = IOMInterpretOUTSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
4960	(DISCPUMODE)pDis->uAddrMode, cbValue);
4961	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
4962	}
4963	else
4964	{
4965	rcStrict = IOMInterpretINSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
4966	(DISCPUMODE)pDis->uAddrMode, cbValue);
4967	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
4968	}
4969	}
4970	else
4971	rcStrict = VINF_EM_RAW_EMULATE_INSTR;
4972	#endif
4973	}
4974	else
4975	{
4976	/* IN/OUT - I/O instruction. */
4977	Assert(!IoExitInfo.n.u1REP);
4978
4979	if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
4980	{
4981	rcStrict = IOMIOPortWrite(pVM, pVCpu, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, cbValue);
4982	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
4983	}
4984	else
4985	{
4986	uint32_t u32Val = 0;
4987	rcStrict = IOMIOPortRead(pVM, pVCpu, IoExitInfo.n.u16Port, &u32Val, cbValue);
4988	if (IOM_SUCCESS(rcStrict))
4989	{
4990	/* Save result of I/O IN instr. in AL/AX/EAX. */
4991	/** @todo r=bird: 32-bit op size should clear high bits of rax! */
4992	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
4993	}
4994	else if (rcStrict == VINF_IOM_R3_IOPORT_READ)
4995	HMR0SavePendingIOPortRead(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
4996
4997	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
4998	}
4999	}
5000
5001	if (IOM_SUCCESS(rcStrict))
5002	{
5003	/* AMD-V saves the RIP of the instruction following the IO instruction in EXITINFO2. */
5004	if (!fUpdateRipAlready)
5005	pCtx->rip = pVmcb->ctrl.u64ExitInfo2;
5006
5007	/*
5008	* If any I/O breakpoints are armed, we need to check if one triggered
5009	* and take appropriate action.
5010	* Note that the I/O breakpoint type is undefined if CR4.DE is 0.
5011	*/
5012	/** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
5013	* execution engines about whether hyper BPs and such are pending. */
5014	uint32_t const uDr7 = pCtx->dr[7];
5015	if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
5016	&& X86_DR7_ANY_RW_IO(uDr7)
5017	&& (pCtx->cr4 & X86_CR4_DE))
5018	\|\| DBGFBpIsHwIoArmed(pVM)))
5019	{
5020	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
5021	VMMRZCallRing3Disable(pVCpu);
5022	HM_DISABLE_PREEMPT();
5023
5024	STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
5025	CPUMR0DebugStateMaybeSaveGuest(pVCpu, false /fDr6/);
5026
5027	VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, pCtx, IoExitInfo.n.u16Port, cbValue);
5028	if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
5029	{
5030	/* Raise #DB. */
5031	pVmcb->guest.u64DR6 = pCtx->dr[6];
5032	pVmcb->guest.u64DR7 = pCtx->dr[7];
5033	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
5034	hmR0SvmSetPendingXcptDB(pVCpu);
5035	}
5036	/* rcStrict is VINF_SUCCESS, VINF_IOM_R3_IOPORT_COMMIT_WRITE, or in [VINF_EM_FIRST..VINF_EM_LAST],
5037	however we can ditch VINF_IOM_R3_IOPORT_COMMIT_WRITE as it has VMCPU_FF_IOM as backup. */
5038	else if ( rcStrict2 != VINF_SUCCESS
5039	&& (rcStrict == VINF_SUCCESS \|\| rcStrict2 < rcStrict))
5040	rcStrict = rcStrict2;
5041	AssertCompile(VINF_EM_LAST < VINF_IOM_R3_IOPORT_COMMIT_WRITE);
5042
5043	HM_RESTORE_PREEMPT();
5044	VMMRZCallRing3Enable(pVCpu);
5045	}
5046
5047	HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
5048	}
5049
5050	#ifdef VBOX_STRICT
5051	if (rcStrict == VINF_IOM_R3_IOPORT_READ)
5052	Assert(IoExitInfo.n.u1Type == SVM_IOIO_READ);
5053	else if (rcStrict == VINF_IOM_R3_IOPORT_WRITE \|\| rcStrict == VINF_IOM_R3_IOPORT_COMMIT_WRITE)
5054	Assert(IoExitInfo.n.u1Type == SVM_IOIO_WRITE);
5055	else
5056	{
5057	/** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
5058	* statuses, that the VMM device and some others may return. See
5059	* IOM_SUCCESS() for guidance. */
5060	AssertMsg( RT_FAILURE(rcStrict)
5061	\|\| rcStrict == VINF_SUCCESS
5062	\|\| rcStrict == VINF_EM_RAW_EMULATE_INSTR
5063	\|\| rcStrict == VINF_EM_DBG_BREAKPOINT
5064	\|\| rcStrict == VINF_EM_RAW_GUEST_TRAP
5065	\|\| rcStrict == VINF_EM_RAW_TO_R3
5066	\|\| rcStrict == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
5067	}
5068	#endif
5069	return VBOXSTRICTRC_TODO(rcStrict);
5070	}
5071
5072
5073	/**
5074	* \#VMEXIT handler for Nested Page-faults (SVM_EXIT_NPF). Conditional \#VMEXIT.
5075	*/
5076	HMSVM_EXIT_DECL hmR0SvmExitNestedPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5077	{
5078	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5079	PVM pVM = pVCpu->CTX_SUFF(pVM);
5080	Assert(pVM->hm.s.fNestedPaging);
5081
5082	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5083
5084	/* See AMD spec. 15.25.6 "Nested versus Guest Page Faults, Fault Ordering" for VMCB details for #NPF. */
5085	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5086	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
5087	RTGCPHYS GCPhysFaultAddr = pVmcb->ctrl.u64ExitInfo2;
5088
5089	Log4(("#NPF at CS:RIP=%04x:%#RX64 faultaddr=%RGp errcode=%#x \n", pCtx->cs.Sel, pCtx->rip, GCPhysFaultAddr, u32ErrCode));
5090
5091	#ifdef VBOX_HM_WITH_GUEST_PATCHING
5092	/* TPR patching for 32-bit guests, using the reserved bit in the page tables for MMIO regions. */
5093	if ( pVM->hm.s.fTprPatchingAllowed
5094	&& (GCPhysFaultAddr & PAGE_OFFSET_MASK) == XAPIC_OFF_TPR
5095	&& ( !(u32ErrCode & X86_TRAP_PF_P) /* Not present */
5096	\|\| (u32ErrCode & (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) /* MMIO page. */
5097	&& !CPUMIsGuestInLongModeEx(pCtx)
5098	&& !CPUMGetGuestCPL(pVCpu)
5099	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
5100	{
5101	RTGCPHYS GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
5102	GCPhysApicBase &= PAGE_BASE_GC_MASK;
5103
5104	if (GCPhysFaultAddr == GCPhysApicBase + XAPIC_OFF_TPR)
5105	{
5106	/* Only attempt to patch the instruction once. */
5107	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
5108	if (!pPatch)
5109	return VINF_EM_HM_PATCH_TPR_INSTR;
5110	}
5111	}
5112	#endif
5113
5114	/*
5115	* Determine the nested paging mode.
5116	*/
5117	PGMMODE enmNestedPagingMode;
5118	#if HC_ARCH_BITS == 32
5119	if (CPUMIsGuestInLongModeEx(pCtx))
5120	enmNestedPagingMode = PGMMODE_AMD64_NX;
5121	else
5122	#endif
5123	enmNestedPagingMode = PGMGetHostMode(pVM);
5124
5125	/*
5126	* MMIO optimization using the reserved (RSVD) bit in the guest page tables for MMIO pages.
5127	*/
5128	int rc;
5129	Assert((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
5130	if ((u32ErrCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P))
5131	{
5132	/* If event delivery causes an MMIO #NPF, go back to instruction emulation as
5133	otherwise injecting the original pending event would most likely cause the same MMIO #NPF. */
5134	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
5135	return VERR_EM_INTERPRETER;
5136
5137	VBOXSTRICTRC rc2 = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmNestedPagingMode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr,
5138	u32ErrCode);
5139	rc = VBOXSTRICTRC_VAL(rc2);
5140
5141	/*
5142	* If we succeed, resume guest execution.
5143	* If we fail in interpreting the instruction because we couldn't get the guest physical address
5144	* of the page containing the instruction via the guest's page tables (we would invalidate the guest page
5145	* in the host TLB), resume execution which would cause a guest page fault to let the guest handle this
5146	* weird case. See @bugref{6043}.
5147	*/
5148	if ( rc == VINF_SUCCESS
5149	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
5150	\|\| rc == VERR_PAGE_NOT_PRESENT)
5151	{
5152	/* Successfully handled MMIO operation. */
5153	HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
5154	rc = VINF_SUCCESS;
5155	}
5156	return rc;
5157	}
5158
5159	TRPMAssertXcptPF(pVCpu, GCPhysFaultAddr, u32ErrCode);
5160	rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmNestedPagingMode, u32ErrCode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr);
5161	TRPMResetTrap(pVCpu);
5162
5163	Log4(("#NPF: PGMR0Trap0eHandlerNestedPaging returned %Rrc CS:RIP=%04x:%#RX64\n", rc, pCtx->cs.Sel, pCtx->rip));
5164
5165	/*
5166	* Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}.
5167	*/
5168	if ( rc == VINF_SUCCESS
5169	\|\| rc == VERR_PAGE_TABLE_NOT_PRESENT
5170	\|\| rc == VERR_PAGE_NOT_PRESENT)
5171	{
5172	/* We've successfully synced our shadow page tables. */
5173	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
5174	rc = VINF_SUCCESS;
5175	}
5176
5177	return rc;
5178	}
5179
5180
5181	/**
5182	* \#VMEXIT handler for virtual interrupt (SVM_EXIT_VINTR). Conditional
5183	* \#VMEXIT.
5184	*/
5185	HMSVM_EXIT_DECL hmR0SvmExitVIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5186	{
5187	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5188
5189	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5190	pVmcb->ctrl.IntCtrl.n.u1VIrqValid = 0; /* No virtual interrupts pending, we'll inject the current one/NMI before reentry. */
5191	pVmcb->ctrl.IntCtrl.n.u8VIrqVector = 0;
5192
5193	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive interrupts/NMIs, it is now ready. */
5194	pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_VINTR;
5195	pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS \| HMSVM_VMCB_CLEAN_TPR);
5196
5197	/* Deliver the pending interrupt/NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
5198	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
5199	return VINF_SUCCESS;
5200	}
5201
5202
5203	/**
5204	* \#VMEXIT handler for task switches (SVM_EXIT_TASK_SWITCH). Conditional
5205	* \#VMEXIT.
5206	*/
5207	HMSVM_EXIT_DECL hmR0SvmExitTaskSwitch(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5208	{
5209	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5210
5211	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5212
5213	#ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
5214	Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
5215	#endif
5216
5217	/* Check if this task-switch occurred while delivering an event through the guest IDT. */
5218	if (pVCpu->hm.s.Event.fPending) /* Can happen with exceptions/NMI. See @bugref{8411}. */
5219	{
5220	/*
5221	* AMD-V provides us with the exception which caused the TS; we collect
5222	* the information in the call to hmR0SvmCheckExitDueToEventDelivery.
5223	*/
5224	Log4(("hmR0SvmExitTaskSwitch: TS occurred during event delivery.\n"));
5225	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
5226	return VINF_EM_RAW_INJECT_TRPM_EVENT;
5227	}
5228
5229	/** @todo Emulate task switch someday, currently just going back to ring-3 for
5230	* emulation. */
5231	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
5232	return VERR_EM_INTERPRETER;
5233	}
5234
5235
5236	/**
5237	* \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
5238	*/
5239	HMSVM_EXIT_DECL hmR0SvmExitVmmCall(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5240	{
5241	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5242	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitVmcall);
5243
5244	/* First check if this is a patched VMMCALL for mov TPR */
5245	int rc = hmR0SvmEmulateMovTpr(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
5246	if (rc == VINF_SUCCESS)
5247	{
5248	HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
5249	return VINF_SUCCESS;
5250	}
5251
5252	if (rc == VERR_NOT_FOUND)
5253	{
5254	if (pVCpu->hm.s.fHypercallsEnabled)
5255	{
5256	VBOXSTRICTRC rcStrict = GIMHypercall(pVCpu, pCtx);
5257	if (RT_SUCCESS(VBOXSTRICTRC_VAL(rcStrict)))
5258	{
5259	if (rcStrict == VINF_SUCCESS)
5260	hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3 /* cbInstr */);
5261	else
5262	Assert( rcStrict == VINF_GIM_HYPERCALL_CONTINUING
5263	\|\| rcStrict == VINF_GIM_R3_HYPERCALL);
5264
5265	/* If the hypercall changes anything other than guest's general-purpose registers,
5266	we would need to reload the guest changed bits here before VM-entry. */
5267	}
5268	rc = VBOXSTRICTRC_VAL(rcStrict);
5269	}
5270	else
5271	Log4(("hmR0SvmExitVmmCall: Hypercalls not enabled\n"));
5272	}
5273
5274	/* If hypercalls are disabled or the hypercall failed for some reason, raise #UD and continue. */
5275	if (RT_FAILURE(rc))
5276	{
5277	hmR0SvmSetPendingXcptUD(pVCpu);
5278	rc = VINF_SUCCESS;
5279	}
5280
5281	return rc;
5282	}
5283
5284
5285	/**
5286	* \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
5287	*/
5288	HMSVM_EXIT_DECL hmR0SvmExitPause(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5289	{
5290	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5291	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitPause);
5292	return VINF_EM_RAW_INTERRUPT;
5293	}
5294
5295
5296	/**
5297	* \#VMEXIT handler for IRET (SVM_EXIT_IRET). Conditional \#VMEXIT.
5298	*/
5299	HMSVM_EXIT_DECL hmR0SvmExitIret(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5300	{
5301	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5302
5303	/* Clear NMI blocking. */
5304	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
5305
5306	/* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
5307	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5308	hmR0SvmClearIretIntercept(pVmcb);
5309
5310	/* Deliver the pending NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
5311	return VINF_SUCCESS;
5312	}
5313
5314
5315	/**
5316	* \#VMEXIT handler for page-fault exceptions (SVM_EXIT_EXCEPTION_E).
5317	* Conditional \#VMEXIT.
5318	*/
5319	HMSVM_EXIT_DECL hmR0SvmExitXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5320	{
5321	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5322
5323	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5324
5325	/* See AMD spec. 15.12.15 "#PF (Page Fault)". */
5326	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5327	uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
5328	RTGCUINTPTR uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
5329	PVM pVM = pVCpu->CTX_SUFF(pVM);
5330
5331	#if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) \|\| defined(HMSVM_ALWAYS_TRAP_PF)
5332	if (pVM->hm.s.fNestedPaging)
5333	{
5334	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
5335	if (!pSvmTransient->fVectoringDoublePF)
5336	{
5337	/* A genuine guest #PF, reflect it to the guest. */
5338	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
5339	Log4(("#PF: Guest page fault at %04X:%RGv FaultAddr=%RGv ErrCode=%#x\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip,
5340	uFaultAddress, u32ErrCode));
5341	}
5342	else
5343	{
5344	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
5345	hmR0SvmSetPendingXcptDF(pVCpu);
5346	Log4(("Pending #DF due to vectoring #PF. NP\n"));
5347	}
5348	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
5349	return VINF_SUCCESS;
5350	}
5351	#endif
5352
5353	Assert(!pVM->hm.s.fNestedPaging);
5354
5355	#ifdef VBOX_HM_WITH_GUEST_PATCHING
5356	/* Shortcut for APIC TPR reads and writes; only applicable to 32-bit guests. */
5357	if ( pVM->hm.s.fTprPatchingAllowed
5358	&& (uFaultAddress & 0xfff) == XAPIC_OFF_TPR
5359	&& !(u32ErrCode & X86_TRAP_PF_P) /* Not present. */
5360	&& !CPUMIsGuestInLongModeEx(pCtx)
5361	&& !CPUMGetGuestCPL(pVCpu)
5362	&& pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
5363	{
5364	RTGCPHYS GCPhysApicBase;
5365	GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
5366	GCPhysApicBase &= PAGE_BASE_GC_MASK;
5367
5368	/* Check if the page at the fault-address is the APIC base. */
5369	RTGCPHYS GCPhysPage;
5370	int rc2 = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL /* pfFlags */, &GCPhysPage);
5371	if ( rc2 == VINF_SUCCESS
5372	&& GCPhysPage == GCPhysApicBase)
5373	{
5374	/* Only attempt to patch the instruction once. */
5375	PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
5376	if (!pPatch)
5377	return VINF_EM_HM_PATCH_TPR_INSTR;
5378	}
5379	}
5380	#endif
5381
5382	Log4(("#PF: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode %#RX32 cr3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
5383	pCtx->rip, u32ErrCode, pCtx->cr3));
5384
5385	/* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
5386	of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
5387	if (pSvmTransient->fVectoringPF)
5388	{
5389	Assert(pVCpu->hm.s.Event.fPending);
5390	return VINF_EM_RAW_INJECT_TRPM_EVENT;
5391	}
5392
5393	TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
5394	int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
5395
5396	Log4(("#PF rc=%Rrc\n", rc));
5397
5398	if (rc == VINF_SUCCESS)
5399	{
5400	/* Successfully synced shadow pages tables or emulated an MMIO instruction. */
5401	TRPMResetTrap(pVCpu);
5402	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
5403	HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
5404	return rc;
5405	}
5406	else if (rc == VINF_EM_RAW_GUEST_TRAP)
5407	{
5408	pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
5409
5410	if (!pSvmTransient->fVectoringDoublePF)
5411	{
5412	/* It's a guest page fault and needs to be reflected to the guest. */
5413	u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
5414	TRPMResetTrap(pVCpu);
5415	hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
5416	}
5417	else
5418	{
5419	/* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
5420	TRPMResetTrap(pVCpu);
5421	hmR0SvmSetPendingXcptDF(pVCpu);
5422	Log4(("#PF: Pending #DF due to vectoring #PF\n"));
5423	}
5424
5425	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
5426	return VINF_SUCCESS;
5427	}
5428
5429	TRPMResetTrap(pVCpu);
5430	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
5431	return rc;
5432	}
5433
5434
5435	/**
5436	* \#VMEXIT handler for device-not-available exceptions (SVM_EXIT_EXCEPTION_7).
5437	* Conditional \#VMEXIT.
5438	*/
5439	HMSVM_EXIT_DECL hmR0SvmExitXcptNM(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5440	{
5441	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5442
5443	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
5444	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb; NOREF(pVmcb);
5445	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid);
5446
5447	/* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
5448	VMMRZCallRing3Disable(pVCpu);
5449	HM_DISABLE_PREEMPT();
5450
5451	int rc;
5452	/* If the guest FPU was active at the time of the #NM exit, then it's a guest fault. */
5453	if (pSvmTransient->fWasGuestFPUStateActive)
5454	{
5455	rc = VINF_EM_RAW_GUEST_TRAP;
5456	Assert(CPUMIsGuestFPUStateActive(pVCpu) \|\| HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0));
5457	}
5458	else
5459	{
5460	#ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
5461	Assert(!pSvmTransient->fWasGuestFPUStateActive);
5462	#endif
5463	rc = CPUMR0Trap07Handler(pVCpu->CTX_SUFF(pVM), pVCpu); /* (No need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
5464	Assert( rc == VINF_EM_RAW_GUEST_TRAP
5465	\|\| ((rc == VINF_SUCCESS \|\| rc == VINF_CPUM_HOST_CR0_MODIFIED) && CPUMIsGuestFPUStateActive(pVCpu)));
5466	}
5467
5468	HM_RESTORE_PREEMPT();
5469	VMMRZCallRing3Enable(pVCpu);
5470
5471	if (rc == VINF_SUCCESS \|\| rc == VINF_CPUM_HOST_CR0_MODIFIED)
5472	{
5473	/* Guest FPU state was activated, we'll want to change CR0 FPU intercepts before the next VM-reentry. */
5474	HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
5475	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowNM);
5476	pVCpu->hm.s.fPreloadGuestFpu = true;
5477	}
5478	else
5479	{
5480	/* Forward #NM to the guest. */
5481	Assert(rc == VINF_EM_RAW_GUEST_TRAP);
5482	hmR0SvmSetPendingXcptNM(pVCpu);
5483	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNM);
5484	}
5485	return VINF_SUCCESS;
5486	}
5487
5488
5489	/**
5490	* \#VMEXIT handler for undefined opcode (SVM_EXIT_EXCEPTION_6).
5491	* Conditional \#VMEXIT.
5492	*/
5493	HMSVM_EXIT_DECL hmR0SvmExitXcptUD(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5494	{
5495	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5496
5497	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
5498	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb; NOREF(pVmcb);
5499	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid);
5500
5501	int rc = VERR_SVM_UNEXPECTED_XCPT_EXIT;
5502	if (pVCpu->hm.s.fGIMTrapXcptUD)
5503	{
5504	uint8_t cbInstr = 0;
5505	VBOXSTRICTRC rcStrict = GIMXcptUD(pVCpu, pCtx, NULL /* pDis */, &cbInstr);
5506	if (rcStrict == VINF_SUCCESS)
5507	{
5508	/* #UD #VMEXIT does not have valid NRIP information, manually advance RIP. See @bugref{7270#c170}. */
5509	hmR0SvmAdvanceRipDumb(pVCpu, pCtx, cbInstr);
5510	rc = VINF_SUCCESS;
5511	}
5512	else if (rcStrict == VINF_GIM_HYPERCALL_CONTINUING)
5513	rc = VINF_SUCCESS;
5514	else if (rcStrict == VINF_GIM_R3_HYPERCALL)
5515	rc = VINF_GIM_R3_HYPERCALL;
5516	else
5517	Assert(RT_FAILURE(VBOXSTRICTRC_VAL(rcStrict)));
5518	}
5519
5520	/* If the GIM #UD exception handler didn't succeed for some reason or wasn't needed, raise #UD. */
5521	if (RT_FAILURE(rc))
5522	{
5523	hmR0SvmSetPendingXcptUD(pVCpu);
5524	rc = VINF_SUCCESS;
5525	}
5526
5527	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD);
5528	return rc;
5529	}
5530
5531
5532	/**
5533	* \#VMEXIT handler for math-fault exceptions (SVM_EXIT_EXCEPTION_10).
5534	* Conditional \#VMEXIT.
5535	*/
5536	HMSVM_EXIT_DECL hmR0SvmExitXcptMF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5537	{
5538	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5539
5540	/* Paranoia; Ensure we cannot be called as a result of event delivery. */
5541	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb; NOREF(pVmcb);
5542	Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid);
5543
5544	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
5545
5546	if (!(pCtx->cr0 & X86_CR0_NE))
5547	{
5548	PVM pVM = pVCpu->CTX_SUFF(pVM);
5549	PDISSTATE pDis = &pVCpu->hm.s.DisState;
5550	unsigned cbOp;
5551	int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp);
5552	if (RT_SUCCESS(rc))
5553	{
5554	/* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
5555	rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13, 1, 0 /* uTagSrc */);
5556	if (RT_SUCCESS(rc))
5557	pCtx->rip += cbOp;
5558	}
5559	else
5560	Log4(("hmR0SvmExitXcptMF: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
5561	return rc;
5562	}
5563
5564	hmR0SvmSetPendingXcptMF(pVCpu);
5565	return VINF_SUCCESS;
5566	}
5567
5568
5569	/**
5570	* \#VMEXIT handler for debug exceptions (SVM_EXIT_EXCEPTION_1). Conditional
5571	* \#VMEXIT.
5572	*/
5573	HMSVM_EXIT_DECL hmR0SvmExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5574	{
5575	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5576
5577	/* If this #DB is the result of delivering an event, go back to the interpreter. */
5578	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5579	if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
5580	{
5581	STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
5582	return VERR_EM_INTERPRETER;
5583	}
5584
5585	STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
5586
5587	/* This can be a fault-type #DB (instruction breakpoint) or a trap-type #DB (data breakpoint). However, for both cases
5588	DR6 and DR7 are updated to what the exception handler expects. See AMD spec. 15.12.2 "#DB (Debug)". */
5589	PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
5590	PVM pVM = pVCpu->CTX_SUFF(pVM);
5591	int rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVmcb->guest.u64DR6, pVCpu->hm.s.fSingleInstruction);
5592	if (rc == VINF_EM_RAW_GUEST_TRAP)
5593	{
5594	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> guest trap\n", pVmcb->guest.u64DR6));
5595	if (CPUMIsHyperDebugStateActive(pVCpu))
5596	CPUMSetGuestDR6(pVCpu, CPUMGetGuestDR6(pVCpu) \| pVmcb->guest.u64DR6);
5597
5598	/* Reflect the exception back to the guest. */
5599	hmR0SvmSetPendingXcptDB(pVCpu);
5600	rc = VINF_SUCCESS;
5601	}
5602
5603	/*
5604	* Update DR6.
5605	*/
5606	if (CPUMIsHyperDebugStateActive(pVCpu))
5607	{
5608	Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> %Rrc\n", pVmcb->guest.u64DR6, rc));
5609	pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
5610	pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
5611	}
5612	else
5613	{
5614	AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc));
5615	Assert(!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu));
5616	}
5617
5618	return rc;
5619	}
5620
5621
5622	/**
5623	* \#VMEXIT handler for alignment check exceptions (SVM_EXIT_EXCEPTION_11).
5624	* Conditional \#VMEXIT.
5625	*/
5626	HMSVM_EXIT_DECL hmR0SvmExitXcptAC(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5627	{
5628	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5629
5630	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5631
5632	SVMEVENT Event;
5633	Event.u = 0;
5634	Event.n.u1Valid = 1;
5635	Event.n.u3Type = SVM_EVENT_EXCEPTION;
5636	Event.n.u8Vector = X86_XCPT_AC;
5637	Event.n.u1ErrorCodeValid = 1;
5638	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
5639	return VINF_SUCCESS;
5640	}
5641
5642
5643	/**
5644	* \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_EXCEPTION_3).
5645	* Conditional \#VMEXIT.
5646	*/
5647	HMSVM_EXIT_DECL hmR0SvmExitXcptBP(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
5648	{
5649	HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
5650
5651	HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
5652
5653	int rc = DBGFRZTrap03Handler(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
5654	if (rc == VINF_EM_RAW_GUEST_TRAP)
5655	{
5656	SVMEVENT Event;
5657	Event.u = 0;
5658	Event.n.u1Valid = 1;
5659	Event.n.u3Type = SVM_EVENT_EXCEPTION;
5660	Event.n.u8Vector = X86_XCPT_BP;
5661	Event.n.u1ErrorCodeValid = 0;
5662	hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
5663	}
5664
5665	Assert(rc == VINF_SUCCESS \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_EM_DBG_BREAKPOINT);
5666	return rc;
5667	}
5668
5669	/** @} */
5670

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source: vbox/trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp@ 64874

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