HWSVMR0.cpp@ 14299

Last change on this file since 14299 was 14109, checked in by vboxsync, 16 years ago
Implemented NMI injection.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 90.4 KB

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1	/* $Id: HWSVMR0.cpp 14109 2008-11-11 19:39:53Z vboxsync $ */
2	/** @file
3	* HWACCM SVM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_HWACCM
27	#include <VBox/hwaccm.h>
28	#include "HWACCMInternal.h"
29	#include <VBox/vm.h>
30	#include <VBox/x86.h>
31	#include <VBox/hwacc_svm.h>
32	#include <VBox/pgm.h>
33	#include <VBox/pdm.h>
34	#include <VBox/err.h>
35	#include <VBox/log.h>
36	#include <VBox/selm.h>
37	#include <VBox/iom.h>
38	#include <VBox/dis.h>
39	#include <VBox/dbgf.h>
40	#include <VBox/disopcode.h>
41	#include <iprt/param.h>
42	#include <iprt/assert.h>
43	#include <iprt/asm.h>
44	#include <iprt/cpuset.h>
45	#include <iprt/mp.h>
46	#include "HWSVMR0.h"
47
48	/*******************************************************************************
49	* Internal Functions *
50	*******************************************************************************/
51	static int SVMR0InterpretInvpg(PVM pVM, PCPUMCTXCORE pRegFrame, uint32_t uASID);
52
53	/*******************************************************************************
54	* Global Variables *
55	*******************************************************************************/
56	/* IO operation lookup arrays. */
57	static uint32_t const g_aIOSize[4] = {1, 2, 0, 4};
58
59	/**
60	* Sets up and activates AMD-V on the current CPU
61	*
62	* @returns VBox status code.
63	* @param pCpu CPU info struct
64	* @param pVM The VM to operate on. (can be NULL after a resume!!)
65	* @param pvPageCpu Pointer to the global cpu page
66	* @param pPageCpuPhys Physical address of the global cpu page
67	*/
68	VMMR0DECL(int) SVMR0EnableCpu(PHWACCM_CPUINFO pCpu, PVM pVM, void *pvPageCpu, RTHCPHYS pPageCpuPhys)
69	{
70	AssertReturn(pPageCpuPhys, VERR_INVALID_PARAMETER);
71	AssertReturn(pvPageCpu, VERR_INVALID_PARAMETER);
72
73	/* We must turn on AMD-V and setup the host state physical address, as those MSRs are per-cpu/core. */
74
75	#ifdef LOG_ENABLED
76	SUPR0Printf("SVMR0EnableCpu cpu %d page (%x) %x\n", pCpu->idCpu, pvPageCpu, (uint32_t)pPageCpuPhys);
77	#endif
78
79	/* Turn on AMD-V in the EFER MSR. */
80	uint64_t val = ASMRdMsr(MSR_K6_EFER);
81	if (!(val & MSR_K6_EFER_SVME))
82	ASMWrMsr(MSR_K6_EFER, val \| MSR_K6_EFER_SVME);
83
84	/* Write the physical page address where the CPU will store the host state while executing the VM. */
85	ASMWrMsr(MSR_K8_VM_HSAVE_PA, pPageCpuPhys);
86
87	return VINF_SUCCESS;
88	}
89
90	/**
91	* Deactivates AMD-V on the current CPU
92	*
93	* @returns VBox status code.
94	* @param pCpu CPU info struct
95	* @param pvPageCpu Pointer to the global cpu page
96	* @param pPageCpuPhys Physical address of the global cpu page
97	*/
98	VMMR0DECL(int) SVMR0DisableCpu(PHWACCM_CPUINFO pCpu, void *pvPageCpu, RTHCPHYS pPageCpuPhys)
99	{
100	AssertReturn(pPageCpuPhys, VERR_INVALID_PARAMETER);
101	AssertReturn(pvPageCpu, VERR_INVALID_PARAMETER);
102
103	#ifdef LOG_ENABLED
104	SUPR0Printf("SVMR0DisableCpu cpu %d\n", pCpu->idCpu);
105	#endif
106
107	/* Turn off AMD-V in the EFER MSR. */
108	uint64_t val = ASMRdMsr(MSR_K6_EFER);
109	ASMWrMsr(MSR_K6_EFER, val & ~MSR_K6_EFER_SVME);
110
111	/* Invalidate host state physical address. */
112	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
113
114	return VINF_SUCCESS;
115	}
116
117	/**
118	* Does Ring-0 per VM AMD-V init.
119	*
120	* @returns VBox status code.
121	* @param pVM The VM to operate on.
122	*/
123	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
124	{
125	int rc;
126
127	pVM->hwaccm.s.svm.pMemObjVMCBHost = NIL_RTR0MEMOBJ;
128	pVM->hwaccm.s.svm.pMemObjIOBitmap = NIL_RTR0MEMOBJ;
129	pVM->hwaccm.s.svm.pMemObjMSRBitmap = NIL_RTR0MEMOBJ;
130
131	/* Allocate one page for the host context */
132	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjVMCBHost, 1 << PAGE_SHIFT, true /* executable R0 mapping */);
133	if (RT_FAILURE(rc))
134	return rc;
135
136	pVM->hwaccm.s.svm.pVMCBHost = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjVMCBHost);
137	pVM->hwaccm.s.svm.pVMCBHostPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjVMCBHost, 0);
138	ASMMemZeroPage(pVM->hwaccm.s.svm.pVMCBHost);
139
140	/* Allocate 12 KB for the IO bitmap (doesn't seem to be a way to convince SVM not to use it) */
141	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjIOBitmap, 3 << PAGE_SHIFT, true /* executable R0 mapping */);
142	if (RT_FAILURE(rc))
143	return rc;
144
145	pVM->hwaccm.s.svm.pIOBitmap = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjIOBitmap);
146	pVM->hwaccm.s.svm.pIOBitmapPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjIOBitmap, 0);
147	/* Set all bits to intercept all IO accesses. */
148	ASMMemFill32(pVM->hwaccm.s.svm.pIOBitmap, PAGE_SIZE*3, 0xffffffff);
149
150	/* Allocate 8 KB for the MSR bitmap (doesn't seem to be a way to convince SVM not to use it) */
151	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjMSRBitmap, 2 << PAGE_SHIFT, true /* executable R0 mapping */);
152	if (RT_FAILURE(rc))
153	return rc;
154
155	pVM->hwaccm.s.svm.pMSRBitmap = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjMSRBitmap);
156	pVM->hwaccm.s.svm.pMSRBitmapPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjMSRBitmap, 0);
157	/* Set all bits to intercept all MSR accesses. */
158	ASMMemFill32(pVM->hwaccm.s.svm.pMSRBitmap, PAGE_SIZE*2, 0xffffffff);
159
160	/* Erratum 170 which requires a forced TLB flush for each world switch:
161	* See http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/33610.pdf
162	*
163	* All BH-G1/2 and DH-G1/2 models include a fix:
164	* Athlon X2: 0x6b 1/2
165	* 0x68 1/2
166	* Athlon 64: 0x7f 1
167	* 0x6f 2
168	* Sempron: 0x7f 1/2
169	* 0x6f 2
170	* 0x6c 2
171	* 0x7c 2
172	* Turion 64: 0x68 2
173	*
174	*/
175	uint32_t u32Dummy;
176	uint32_t u32Version, u32Family, u32Model, u32Stepping, u32BaseFamily;
177	ASMCpuId(1, &u32Version, &u32Dummy, &u32Dummy, &u32Dummy);
178	u32BaseFamily= (u32Version >> 8) & 0xf;
179	u32Family = u32BaseFamily + (u32BaseFamily == 0xf ? ((u32Version >> 20) & 0x7f) : 0);
180	u32Model = ((u32Version >> 4) & 0xf);
181	u32Model = u32Model \| ((u32BaseFamily == 0xf ? (u32Version >> 16) & 0x0f : 0) << 4);
182	u32Stepping = u32Version & 0xf;
183	if ( u32Family == 0xf
184	&& !((u32Model == 0x68 \|\| u32Model == 0x6b \|\| u32Model == 0x7f) && u32Stepping >= 1)
185	&& !((u32Model == 0x6f \|\| u32Model == 0x6c \|\| u32Model == 0x7c) && u32Stepping >= 2))
186	{
187	Log(("SVMR0InitVM: AMD cpu with erratum 170 family %x model %x stepping %x\n", u32Family, u32Model, u32Stepping));
188	pVM->hwaccm.s.svm.fAlwaysFlushTLB = true;
189	}
190
191	/* Allocate VMCBs for all guest CPUs. */
192	for (unsigned i=0;i<pVM->cCPUs;i++)
193	{
194	pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB = NIL_RTR0MEMOBJ;
195
196	/* Allocate one page for the VM control block (VMCB). */
197	rc = RTR0MemObjAllocCont(&pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB, 1 << PAGE_SHIFT, true /* executable R0 mapping */);
198	if (RT_FAILURE(rc))
199	return rc;
200
201	pVM->aCpus[i].hwaccm.s.svm.pVMCB = RTR0MemObjAddress(pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB);
202	pVM->aCpus[i].hwaccm.s.svm.pVMCBPhys = RTR0MemObjGetPagePhysAddr(pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB, 0);
203	ASMMemZeroPage(pVM->aCpus[i].hwaccm.s.svm.pVMCB);
204	}
205
206	return VINF_SUCCESS;
207	}
208
209	/**
210	* Does Ring-0 per VM AMD-V termination.
211	*
212	* @returns VBox status code.
213	* @param pVM The VM to operate on.
214	*/
215	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
216	{
217	for (unsigned i=0;i<pVM->cCPUs;i++)
218	{
219	if (pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB != NIL_RTR0MEMOBJ)
220	{
221	RTR0MemObjFree(pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB, false);
222	pVM->aCpus[i].hwaccm.s.svm.pVMCB = 0;
223	pVM->aCpus[i].hwaccm.s.svm.pVMCBPhys = 0;
224	pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB = NIL_RTR0MEMOBJ;
225	}
226	}
227	if (pVM->hwaccm.s.svm.pMemObjVMCBHost != NIL_RTR0MEMOBJ)
228	{
229	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjVMCBHost, false);
230	pVM->hwaccm.s.svm.pVMCBHost = 0;
231	pVM->hwaccm.s.svm.pVMCBHostPhys = 0;
232	pVM->hwaccm.s.svm.pMemObjVMCBHost = NIL_RTR0MEMOBJ;
233	}
234	if (pVM->hwaccm.s.svm.pMemObjIOBitmap != NIL_RTR0MEMOBJ)
235	{
236	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjIOBitmap, false);
237	pVM->hwaccm.s.svm.pIOBitmap = 0;
238	pVM->hwaccm.s.svm.pIOBitmapPhys = 0;
239	pVM->hwaccm.s.svm.pMemObjIOBitmap = NIL_RTR0MEMOBJ;
240	}
241	if (pVM->hwaccm.s.svm.pMemObjMSRBitmap != NIL_RTR0MEMOBJ)
242	{
243	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjMSRBitmap, false);
244	pVM->hwaccm.s.svm.pMSRBitmap = 0;
245	pVM->hwaccm.s.svm.pMSRBitmapPhys = 0;
246	pVM->hwaccm.s.svm.pMemObjMSRBitmap = NIL_RTR0MEMOBJ;
247	}
248	return VINF_SUCCESS;
249	}
250
251	/**
252	* Sets up AMD-V for the specified VM
253	*
254	* @returns VBox status code.
255	* @param pVM The VM to operate on.
256	*/
257	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
258	{
259	int rc = VINF_SUCCESS;
260	SVM_VMCB *pVMCB;
261
262	AssertReturn(pVM, VERR_INVALID_PARAMETER);
263
264	Assert(pVM->hwaccm.s.svm.fSupported);
265
266	for (unsigned i=0;i<pVM->cCPUs;i++)
267	{
268	pVMCB = (SVM_VMCB *)pVM->aCpus[i].hwaccm.s.svm.pVMCB;
269	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
270
271	/* Program the control fields. Most of them never have to be changed again. */
272	/* CR0/3/4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
273	/* Note: CR0 & CR4 can be safely read when guest and shadow copies are identical. */
274	if (!pVM->hwaccm.s.fNestedPaging)
275	pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(3) \| RT_BIT(4);
276	else
277	pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(4);
278
279	/*
280	* CR0/3/4 writes must be intercepted for obvious reasons.
281	*/
282	if (!pVM->hwaccm.s.fNestedPaging)
283	pVMCB->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(3) \| RT_BIT(4);
284	else
285	pVMCB->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(4) \| RT_BIT(8);
286
287	/* Intercept all DRx reads and writes by default. Changed later on. */
288	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
289	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
290
291	/* Currently we don't care about DRx reads or writes. DRx registers are trashed.
292	* All breakpoints are automatically cleared when the VM exits.
293	*/
294
295	pVMCB->ctrl.u32InterceptException = HWACCM_SVM_TRAP_MASK;
296	#ifndef DEBUG
297	if (pVM->hwaccm.s.fNestedPaging)
298	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_PF); /* no longer need to intercept #PF. */
299	#endif
300
301	pVMCB->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR
302	\| SVM_CTRL1_INTERCEPT_VINTR
303	\| SVM_CTRL1_INTERCEPT_NMI
304	\| SVM_CTRL1_INTERCEPT_SMI
305	\| SVM_CTRL1_INTERCEPT_INIT
306	\| SVM_CTRL1_INTERCEPT_RDPMC
307	\| SVM_CTRL1_INTERCEPT_CPUID
308	\| SVM_CTRL1_INTERCEPT_RSM
309	\| SVM_CTRL1_INTERCEPT_HLT
310	\| SVM_CTRL1_INTERCEPT_INOUT_BITMAP
311	\| SVM_CTRL1_INTERCEPT_MSR_SHADOW
312	\| SVM_CTRL1_INTERCEPT_INVLPG
313	\| SVM_CTRL1_INTERCEPT_INVLPGA /* AMD only */
314	\| SVM_CTRL1_INTERCEPT_TASK_SWITCH
315	\| SVM_CTRL1_INTERCEPT_SHUTDOWN /* fatal */
316	\| SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Legacy FPU FERR handling. */
317	;
318	/* With nested paging we don't care about invlpg anymore. */
319	if (pVM->hwaccm.s.fNestedPaging)
320	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_INVLPG;
321
322	pVMCB->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* required */
323	\| SVM_CTRL2_INTERCEPT_VMMCALL
324	\| SVM_CTRL2_INTERCEPT_VMLOAD
325	\| SVM_CTRL2_INTERCEPT_VMSAVE
326	\| SVM_CTRL2_INTERCEPT_STGI
327	\| SVM_CTRL2_INTERCEPT_CLGI
328	\| SVM_CTRL2_INTERCEPT_SKINIT
329	\| SVM_CTRL2_INTERCEPT_RDTSCP /* AMD only; we don't support this one */
330	\| SVM_CTRL2_INTERCEPT_WBINVD
331	\| SVM_CTRL2_INTERCEPT_MWAIT_UNCOND; /* don't execute mwait or else we'll idle inside the guest (host thinks the cpu load is high) */
332	;
333	Log(("pVMCB->ctrl.u32InterceptException = %x\n", pVMCB->ctrl.u32InterceptException));
334	Log(("pVMCB->ctrl.u32InterceptCtrl1 = %x\n", pVMCB->ctrl.u32InterceptCtrl1));
335	Log(("pVMCB->ctrl.u32InterceptCtrl2 = %x\n", pVMCB->ctrl.u32InterceptCtrl2));
336
337	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
338	pVMCB->ctrl.IntCtrl.n.u1VIrqMasking = 1;
339	/* Ignore the priority in the TPR; just deliver it when we tell it to. */
340	pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
341
342	/* Set IO and MSR bitmap addresses. */
343	pVMCB->ctrl.u64IOPMPhysAddr = pVM->hwaccm.s.svm.pIOBitmapPhys;
344	pVMCB->ctrl.u64MSRPMPhysAddr = pVM->hwaccm.s.svm.pMSRBitmapPhys;
345
346	/* No LBR virtualization. */
347	pVMCB->ctrl.u64LBRVirt = 0;
348
349	/** The ASID must start at 1; the host uses 0. */
350	pVMCB->ctrl.TLBCtrl.n.u32ASID = 1;
351
352	/** Setup the PAT msr (nested paging only) */
353	pVMCB->guest.u64GPAT = 0x0007040600070406ULL;
354	}
355	return rc;
356	}
357
358
359	/**
360	* Injects an event (trap or external interrupt)
361	*
362	* @param pVM The VM to operate on.
363	* @param pVMCB SVM control block
364	* @param pCtx CPU Context
365	* @param pIntInfo SVM interrupt info
366	*/
367	inline void SVMR0InjectEvent(PVM pVM, SVM_VMCB pVMCB, CPUMCTX pCtx, SVM_EVENT* pEvent)
368	{
369	#ifdef VBOX_STRICT
370	if (pEvent->n.u8Vector == 0xE)
371	Log(("SVM: Inject int %d at %RGv error code=%02x CR2=%RGv intInfo=%08x\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip, pEvent->n.u32ErrorCode, (RTGCPTR)pCtx->cr2, pEvent->au64[0]));
372	else
373	if (pEvent->n.u8Vector < 0x20)
374	Log(("SVM: Inject int %d at %RGv error code=%08x\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip, pEvent->n.u32ErrorCode));
375	else
376	{
377	Log(("INJ-EI: %x at %RGv\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip));
378	Assert(!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS));
379	Assert(pCtx->eflags.u32 & X86_EFL_IF);
380	}
381	#endif
382
383	/* Set event injection state. */
384	pVMCB->ctrl.EventInject.au64[0] = pEvent->au64[0];
385	}
386
387
388	/**
389	* Checks for pending guest interrupts and injects them
390	*
391	* @returns VBox status code.
392	* @param pVM The VM to operate on.
393	* @param pVCpu The VM CPU to operate on.
394	* @param pVMCB SVM control block
395	* @param pCtx CPU Context
396	*/
397	static int SVMR0CheckPendingInterrupt(PVM pVM, PVMCPU pVCpu, SVM_VMCB pVMCB, CPUMCTX pCtx)
398	{
399	int rc;
400
401	/* Dispatch any pending interrupts. (injected before, but a VM exit occurred prematurely) */
402	if (pVCpu->hwaccm.s.Event.fPending)
403	{
404	SVM_EVENT Event;
405
406	Log(("Reinjecting event %08x %08x at %RGv\n", pVCpu->hwaccm.s.Event.intInfo, pVCpu->hwaccm.s.Event.errCode, (RTGCPTR)pCtx->rip));
407	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntReinject);
408	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
409	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
410
411	pVCpu->hwaccm.s.Event.fPending = false;
412	return VINF_SUCCESS;
413	}
414
415	if (pVM->hwaccm.s.fInjectNMI)
416	{
417	SVM_EVENT Event;
418
419	Event.n.u8Vector = X86_XCPT_NMI;
420	Event.n.u1Valid = 1;
421	Event.n.u32ErrorCode = 0;
422	Event.n.u3Type = SVM_EVENT_NMI;
423
424	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
425	pVM->hwaccm.s.fInjectNMI = false;
426	return VINF_SUCCESS;
427	}
428
429	/* When external interrupts are pending, we should exit the VM when IF is set. */
430	if ( !TRPMHasTrap(pVM)
431	&& VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
432	{
433	if ( !(pCtx->eflags.u32 & X86_EFL_IF)
434	\|\| VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
435	{
436	if (!pVMCB->ctrl.IntCtrl.n.u1VIrqValid)
437	{
438	if (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
439	LogFlow(("Enable irq window exit!\n"));
440	else
441	Log(("Pending interrupt blocked at %RGv by VM_FF_INHIBIT_INTERRUPTS -> irq window exit\n", (RTGCPTR)pCtx->rip));
442
443	/** @todo use virtual interrupt method to inject a pending irq; dispatched as soon as guest.IF is set. */
444	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
445	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 1;
446	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0; /* don't care */
447	}
448	}
449	else
450	{
451	uint8_t u8Interrupt;
452
453	rc = PDMGetInterrupt(pVM, &u8Interrupt);
454	Log(("Dispatch interrupt: u8Interrupt=%x (%d) rc=%Rrc\n", u8Interrupt, u8Interrupt, rc));
455	if (RT_SUCCESS(rc))
456	{
457	rc = TRPMAssertTrap(pVM, u8Interrupt, TRPM_HARDWARE_INT);
458	AssertRC(rc);
459	}
460	else
461	{
462	/* Can only happen in rare cases where a pending interrupt is cleared behind our back */
463	Assert(!VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)));
464	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchGuestIrq);
465	/* Just continue */
466	}
467	}
468	}
469
470	#ifdef VBOX_STRICT
471	if (TRPMHasTrap(pVM))
472	{
473	uint8_t u8Vector;
474	rc = TRPMQueryTrapAll(pVM, &u8Vector, 0, 0, 0);
475	AssertRC(rc);
476	}
477	#endif
478
479	if ( pCtx->eflags.u32 & X86_EFL_IF
480	&& (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
481	&& TRPMHasTrap(pVM)
482	)
483	{
484	uint8_t u8Vector;
485	int rc;
486	TRPMEVENT enmType;
487	SVM_EVENT Event;
488	RTGCUINT u32ErrorCode;
489
490	Event.au64[0] = 0;
491
492	/* If a new event is pending, then dispatch it now. */
493	rc = TRPMQueryTrapAll(pVM, &u8Vector, &enmType, &u32ErrorCode, 0);
494	AssertRC(rc);
495	Assert(pCtx->eflags.Bits.u1IF == 1 \|\| enmType == TRPM_TRAP);
496	Assert(enmType != TRPM_SOFTWARE_INT);
497
498	/* Clear the pending trap. */
499	rc = TRPMResetTrap(pVM);
500	AssertRC(rc);
501
502	Event.n.u8Vector = u8Vector;
503	Event.n.u1Valid = 1;
504	Event.n.u32ErrorCode = u32ErrorCode;
505
506	if (enmType == TRPM_TRAP)
507	{
508	switch (u8Vector) {
509	case 8:
510	case 10:
511	case 11:
512	case 12:
513	case 13:
514	case 14:
515	case 17:
516	/* Valid error codes. */
517	Event.n.u1ErrorCodeValid = 1;
518	break;
519	default:
520	break;
521	}
522	if (u8Vector == X86_XCPT_NMI)
523	Event.n.u3Type = SVM_EVENT_NMI;
524	else
525	Event.n.u3Type = SVM_EVENT_EXCEPTION;
526	}
527	else
528	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
529
530	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntInject);
531	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
532	} /* if (interrupts can be dispatched) */
533
534	return VINF_SUCCESS;
535	}
536
537	/**
538	* Save the host state
539	*
540	* @returns VBox status code.
541	* @param pVM The VM to operate on.
542	* @param pVCpu The VM CPU to operate on.
543	*/
544	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
545	{
546	NOREF(pVM);
547	NOREF(pVCpu);
548	/* Nothing to do here. */
549	return VINF_SUCCESS;
550	}
551
552	/**
553	* Loads the guest state
554	*
555	* NOTE: Don't do anything here that can cause a jump back to ring 3!!!!!
556	*
557	* @returns VBox status code.
558	* @param pVM The VM to operate on.
559	* @param pVCpu The VM CPU to operate on.
560	* @param pCtx Guest context
561	*/
562	VMMR0DECL(int) SVMR0LoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
563	{
564	RTGCUINTPTR val;
565	SVM_VMCB *pVMCB;
566
567	if (pVM == NULL)
568	return VERR_INVALID_PARAMETER;
569
570	/* Setup AMD SVM. */
571	Assert(pVM->hwaccm.s.svm.fSupported);
572
573	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
574	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
575
576	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
577	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SEGMENT_REGS)
578	{
579	SVM_WRITE_SELREG(CS, cs);
580	SVM_WRITE_SELREG(SS, ss);
581	SVM_WRITE_SELREG(DS, ds);
582	SVM_WRITE_SELREG(ES, es);
583	SVM_WRITE_SELREG(FS, fs);
584	SVM_WRITE_SELREG(GS, gs);
585	}
586
587	/* Guest CPU context: LDTR. */
588	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_LDTR)
589	{
590	SVM_WRITE_SELREG(LDTR, ldtr);
591	}
592
593	/* Guest CPU context: TR. */
594	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_TR)
595	{
596	SVM_WRITE_SELREG(TR, tr);
597	}
598
599	/* Guest CPU context: GDTR. */
600	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_GDTR)
601	{
602	pVMCB->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
603	pVMCB->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
604	}
605
606	/* Guest CPU context: IDTR. */
607	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_IDTR)
608	{
609	pVMCB->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
610	pVMCB->guest.IDTR.u64Base = pCtx->idtr.pIdt;
611	}
612
613	/*
614	* Sysenter MSRs (unconditional)
615	*/
616	pVMCB->guest.u64SysEnterCS = pCtx->SysEnter.cs;
617	pVMCB->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
618	pVMCB->guest.u64SysEnterESP = pCtx->SysEnter.esp;
619
620	/* Control registers */
621	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR0)
622	{
623	val = pCtx->cr0;
624	if (!CPUMIsGuestFPUStateActive(pVCpu))
625	{
626	/* Always use #NM exceptions to load the FPU/XMM state on demand. */
627	val \|= X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
628	}
629	else
630	{
631	/** @todo check if we support the old style mess correctly. */
632	if (!(val & X86_CR0_NE))
633	{
634	Log(("Forcing X86_CR0_NE!!!\n"));
635
636	/* Also catch floating point exceptions as we need to report them to the guest in a different way. */
637	if (!pVCpu->hwaccm.s.fFPUOldStyleOverride)
638	{
639	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_MF);
640	pVCpu->hwaccm.s.fFPUOldStyleOverride = true;
641	}
642	}
643	val \|= X86_CR0_NE; /* always turn on the native mechanism to report FPU errors (old style uses interrupts) */
644	}
645	/* Always enable caching. */
646	val &= ~(X86_CR0_CD\|X86_CR0_NW);
647
648	/* Note: WP is not relevant in nested paging mode as we catch accesses on the (guest) physical level. */
649	/* Note: In nested paging mode the guest is allowed to run with paging disabled; the guest physical to host physical translation will remain active. */
650	if (!pVM->hwaccm.s.fNestedPaging)
651	{
652	val \|= X86_CR0_PG; /* Paging is always enabled; even when the guest is running in real mode or PE without paging. */
653	val \|= X86_CR0_WP; /* Must set this as we rely on protect various pages and supervisor writes must be caught. */
654	}
655	pVMCB->guest.u64CR0 = val;
656	}
657	/* CR2 as well */
658	pVMCB->guest.u64CR2 = pCtx->cr2;
659
660	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR3)
661	{
662	/* Save our shadow CR3 register. */
663	if (pVM->hwaccm.s.fNestedPaging)
664	{
665	pVMCB->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVM, PGMGetHostMode(pVM));
666	Assert(pVMCB->ctrl.u64NestedPagingCR3);
667	pVMCB->guest.u64CR3 = pCtx->cr3;
668	}
669	else
670	{
671	pVMCB->guest.u64CR3 = PGMGetHyperCR3(pVM);
672	Assert(pVMCB->guest.u64CR3);
673	}
674	}
675
676	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR4)
677	{
678	val = pCtx->cr4;
679	if (!pVM->hwaccm.s.fNestedPaging)
680	{
681	switch(pVCpu->hwaccm.s.enmShadowMode)
682	{
683	case PGMMODE_REAL:
684	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
685	AssertFailed();
686	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
687
688	case PGMMODE_32_BIT: /* 32-bit paging. */
689	break;
690
691	case PGMMODE_PAE: /* PAE paging. */
692	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
693	/** @todo use normal 32 bits paging */
694	val \|= X86_CR4_PAE;
695	break;
696
697	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
698	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
699	#ifdef VBOX_ENABLE_64_BITS_GUESTS
700	break;
701	#else
702	AssertFailed();
703	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
704	#endif
705
706	default: /* shut up gcc */
707	AssertFailed();
708	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
709	}
710	}
711	pVMCB->guest.u64CR4 = val;
712	}
713
714	/* Debug registers. */
715	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_DEBUG)
716	{
717	pCtx->dr[6] \|= X86_DR6_INIT_VAL; /* set all reserved bits to 1. */
718	pCtx->dr[6] &= ~RT_BIT(12); /* must be zero. */
719
720	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
721	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
722	pCtx->dr[7] \|= 0x400; /* must be one */
723
724	pVMCB->guest.u64DR7 = pCtx->dr[7];
725	pVMCB->guest.u64DR6 = pCtx->dr[6];
726
727	/* Sync the debug state now if any breakpoint is armed. */
728	if ( (pCtx->dr[7] & (X86_DR7_ENABLED_MASK\|X86_DR7_GD))
729	&& !CPUMIsGuestDebugStateActive(pVM)
730	&& !DBGFIsStepping(pVM))
731	{
732	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxArmed);
733
734	/* Disable drx move intercepts. */
735	pVMCB->ctrl.u16InterceptRdDRx = 0;
736	pVMCB->ctrl.u16InterceptWrDRx = 0;
737
738	/* Save the host and load the guest debug state. */
739	int rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
740	AssertRC(rc);
741	}
742	}
743
744	/* EIP, ESP and EFLAGS */
745	pVMCB->guest.u64RIP = pCtx->rip;
746	pVMCB->guest.u64RSP = pCtx->rsp;
747	pVMCB->guest.u64RFlags = pCtx->eflags.u32;
748
749	/* Set CPL */
750	pVMCB->guest.u8CPL = pCtx->csHid.Attr.n.u2Dpl;
751
752	/* RAX/EAX too, as VMRUN uses RAX as an implicit parameter. */
753	pVMCB->guest.u64RAX = pCtx->rax;
754
755	/* vmrun will fail without MSR_K6_EFER_SVME. */
756	pVMCB->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
757
758	/* 64 bits guest mode? */
759	if (pCtx->msrEFER & MSR_K6_EFER_LMA)
760	{
761	#if !defined(VBOX_WITH_64_BITS_GUESTS) \|\| HC_ARCH_BITS != 64
762	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
763	#else
764	pVCpu->hwaccm.s.svm.pfnVMRun = SVMVMRun64;
765	#endif
766	/* Unconditionally update these as wrmsr might have changed them. (HWACCM_CHANGED_GUEST_SEGMENT_REGS will not be set) */
767	pVMCB->guest.FS.u64Base = pCtx->fsHid.u64Base;
768	pVMCB->guest.GS.u64Base = pCtx->gsHid.u64Base;
769	}
770	else
771	{
772	/* Filter out the MSR_K6_LME bit or else AMD-V expects amd64 shadow paging. */
773	pVMCB->guest.u64EFER &= ~MSR_K6_EFER_LME;
774
775	pVCpu->hwaccm.s.svm.pfnVMRun = SVMVMRun;
776	}
777
778	/* TSC offset. */
779	if (TMCpuTickCanUseRealTSC(pVM, &pVMCB->ctrl.u64TSCOffset))
780	{
781	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
782	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCOffset);
783	}
784	else
785	{
786	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
787	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCIntercept);
788	}
789
790	/* Sync the various msrs for 64 bits mode. */
791	pVMCB->guest.u64STAR = pCtx->msrSTAR; /* legacy syscall eip, cs & ss */
792	pVMCB->guest.u64LSTAR = pCtx->msrLSTAR; /* 64 bits mode syscall rip */
793	pVMCB->guest.u64CSTAR = pCtx->msrCSTAR; /* compatibility mode syscall rip */
794	pVMCB->guest.u64SFMASK = pCtx->msrSFMASK; /* syscall flag mask */
795	pVMCB->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE; /* swapgs exchange value */
796
797	#ifdef DEBUG
798	/* Intercept X86_XCPT_DB if stepping is enabled */
799	if (DBGFIsStepping(pVM))
800	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_DB);
801	else
802	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_DB);
803	#endif
804
805	/* Done. */
806	pVCpu->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_ALL_GUEST;
807
808	return VINF_SUCCESS;
809	}
810
811
812	/**
813	* Runs guest code in an AMD-V VM.
814	*
815	* @returns VBox status code.
816	* @param pVM The VM to operate on.
817	* @param pVCpu The VM CPU to operate on.
818	* @param pCtx Guest context
819	*/
820	VMMR0DECL(int) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
821	{
822	int rc = VINF_SUCCESS;
823	uint64_t exitCode = (uint64_t)SVM_EXIT_INVALID;
824	SVM_VMCB *pVMCB;
825	bool fSyncTPR = false;
826	unsigned cResume = 0;
827	uint8_t u8LastVTPR;
828	PHWACCM_CPUINFO pCpu = 0;
829	#ifdef VBOX_STRICT
830	RTCPUID idCpuCheck;
831	#endif
832
833	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatEntry, x);
834
835	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
836	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
837
838	/* We can jump to this point to resume execution after determining that a VM-exit is innocent.
839	*/
840	ResumeExecution:
841	Assert(!HWACCMR0SuspendPending());
842
843	/* Safety precaution; looping for too long here can have a very bad effect on the host */
844	if (++cResume > HWACCM_MAX_RESUME_LOOPS)
845	{
846	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitMaxResume);
847	rc = VINF_EM_RAW_INTERRUPT;
848	goto end;
849	}
850
851	/* Check for irq inhibition due to instruction fusing (sti, mov ss). */
852	if (VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
853	{
854	Log(("VM_FF_INHIBIT_INTERRUPTS at %RGv successor %RGv\n", (RTGCPTR)pCtx->rip, EMGetInhibitInterruptsPC(pVM)));
855	if (pCtx->rip != EMGetInhibitInterruptsPC(pVM))
856	{
857	/* Note: we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here.
858	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
859	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
860	* break the guest. Sounds very unlikely, but such timing sensitive problem are not as rare as you might think.
861	*/
862	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
863	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
864	pVMCB->ctrl.u64IntShadow = 0;
865	}
866	}
867	else
868	{
869	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
870	pVMCB->ctrl.u64IntShadow = 0;
871	}
872
873	/* Check for pending actions that force us to go back to ring 3. */
874	#ifdef DEBUG
875	/* Intercept X86_XCPT_DB if stepping is enabled */
876	if (!DBGFIsStepping(pVM))
877	#endif
878	{
879	if (VM_FF_ISPENDING(pVM, VM_FF_TO_R3 \| VM_FF_TIMER))
880	{
881	VM_FF_CLEAR(pVM, VM_FF_TO_R3);
882	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchToR3);
883	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
884	rc = VINF_EM_RAW_TO_R3;
885	goto end;
886	}
887	}
888
889	/* Pending request packets might contain actions that need immediate attention, such as pending hardware interrupts. */
890	if (VM_FF_ISPENDING(pVM, VM_FF_REQUEST))
891	{
892	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
893	rc = VINF_EM_PENDING_REQUEST;
894	goto end;
895	}
896
897	/* When external interrupts are pending, we should exit the VM when IF is set. */
898	/* Note! After VM_FF_INHIBIT_INTERRUPTS check!!! */
899	rc = SVMR0CheckPendingInterrupt(pVM, pVCpu, pVMCB, pCtx);
900	if (RT_FAILURE(rc))
901	{
902	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
903	goto end;
904	}
905
906	/* TPR caching using CR8 is only available in 64 bits mode */
907	/* Note the 32 bits exception for AMD (X86_CPUID_AMD_FEATURE_ECX_CR8L), but that appears missing in Intel CPUs */
908	/* Note: we can't do this in LoadGuestState as PDMApicGetTPR can jump back to ring 3 (lock)!!!!!!!! */
909	if (pCtx->msrEFER & MSR_K6_EFER_LMA)
910	{
911	bool fPending;
912
913	/* TPR caching in CR8 */
914	int rc = PDMApicGetTPR(pVM, &u8LastVTPR, &fPending);
915	AssertRC(rc);
916	pVMCB->ctrl.IntCtrl.n.u8VTPR = u8LastVTPR;
917
918	if (fPending)
919	{
920	/* A TPR change could activate a pending interrupt, so catch cr8 writes. */
921	pVMCB->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
922	}
923	else
924	/* No interrupts are pending, so we don't need to be explicitely notified.
925	* There are enough world switches for detecting pending interrupts.
926	*/
927	pVMCB->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
928
929	fSyncTPR = !fPending;
930	}
931
932	/* All done! Let's start VM execution. */
933	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatInGC, x);
934
935	/* Enable nested paging if necessary (disabled each time after #VMEXIT). */
936	pVMCB->ctrl.NestedPaging.n.u1NestedPaging = pVM->hwaccm.s.fNestedPaging;
937
938	#ifdef LOG_ENABLED
939	pCpu = HWACCMR0GetCurrentCpu();
940	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
941	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
942	{
943	if (pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu)
944	Log(("Force TLB flush due to rescheduling to a different cpu (%d vs %d)\n", pVCpu->hwaccm.s.idLastCpu, pCpu->idCpu));
945	else
946	Log(("Force TLB flush due to changed TLB flush count (%x vs %x)\n", pVCpu->hwaccm.s.cTLBFlushes, pCpu->cTLBFlushes));
947	}
948	if (pCpu->fFlushTLB)
949	Log(("Force TLB flush: first time cpu %d is used -> flush\n", pCpu->idCpu));
950	#endif
951
952	/*
953	* NOTE: DO NOT DO ANYTHING AFTER THIS POINT THAT MIGHT JUMP BACK TO RING 3!
954	* (until the actual world switch)
955	*/
956
957	#ifdef VBOX_STRICT
958	idCpuCheck = RTMpCpuId();
959	#endif
960
961	/* Load the guest state; must be here as it sets up the shadow cr0 for lazy fpu syncing! */
962	rc = SVMR0LoadGuestState(pVM, pVCpu, pCtx);
963	if (rc != VINF_SUCCESS)
964	{
965	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
966	goto end;
967	}
968
969	pCpu = HWACCMR0GetCurrentCpu();
970	/* Force a TLB flush for the first world switch if the current cpu differs from the one we ran on last. */
971	/* Note that this can happen both for start and resume due to long jumps back to ring 3. */
972	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
973	/* if the tlb flush count has changed, another VM has flushed the TLB of this cpu, so we can't use our current ASID anymore. */
974	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
975	{
976	/* Force a TLB flush on VM entry. */
977	pVCpu->hwaccm.s.fForceTLBFlush = true;
978	}
979	else
980	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
981
982	pVCpu->hwaccm.s.idLastCpu = pCpu->idCpu;
983
984	/* Make sure we flush the TLB when required. Switch ASID to achieve the same thing, but without actually flushing the whole TLB (which is expensive). */
985	if ( pVCpu->hwaccm.s.fForceTLBFlush
986	&& !pVM->hwaccm.s.svm.fAlwaysFlushTLB)
987	{
988	if ( ++pCpu->uCurrentASID >= pVM->hwaccm.s.uMaxASID
989	\|\| pCpu->fFlushTLB)
990	{
991	pCpu->fFlushTLB = false;
992	pCpu->uCurrentASID = 1; /* start at 1; host uses 0 */
993	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = 1; /* wrap around; flush TLB */
994	pCpu->cTLBFlushes++;
995	}
996	else
997	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushASID);
998
999	pVCpu->hwaccm.s.cTLBFlushes = pCpu->cTLBFlushes;
1000	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID;
1001	}
1002	else
1003	{
1004	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
1005
1006	/* We never increase uCurrentASID in the fAlwaysFlushTLB (erratum 170) case. */
1007	if (!pCpu->uCurrentASID \|\| !pVCpu->hwaccm.s.uCurrentASID)
1008	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID = 1;
1009
1010	Assert(!pVM->hwaccm.s.svm.fAlwaysFlushTLB \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1011	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = pVCpu->hwaccm.s.fForceTLBFlush;
1012	}
1013	AssertMsg(pVCpu->hwaccm.s.cTLBFlushes == pCpu->cTLBFlushes, ("Flush count mismatch for cpu %d (%x vs %x)\n", pCpu->idCpu, pVCpu->hwaccm.s.cTLBFlushes, pCpu->cTLBFlushes));
1014	AssertMsg(pCpu->uCurrentASID >= 1 && pCpu->uCurrentASID < pVM->hwaccm.s.uMaxASID, ("cpu%d uCurrentASID = %x\n", pCpu->idCpu, pCpu->uCurrentASID));
1015	AssertMsg(pVCpu->hwaccm.s.uCurrentASID >= 1 && pVCpu->hwaccm.s.uCurrentASID < pVM->hwaccm.s.uMaxASID, ("cpu%d VM uCurrentASID = %x\n", pCpu->idCpu, pVCpu->hwaccm.s.uCurrentASID));
1016	pVMCB->ctrl.TLBCtrl.n.u32ASID = pVCpu->hwaccm.s.uCurrentASID;
1017
1018	#ifdef VBOX_WITH_STATISTICS
1019	if (pVMCB->ctrl.TLBCtrl.n.u1TLBFlush)
1020	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBWorldSwitch);
1021	else
1022	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatNoFlushTLBWorldSwitch);
1023	#endif
1024
1025	/* In case we execute a goto ResumeExecution later on. */
1026	pVCpu->hwaccm.s.fResumeVM = true;
1027	pVCpu->hwaccm.s.fForceTLBFlush = pVM->hwaccm.s.svm.fAlwaysFlushTLB;
1028
1029	Assert(sizeof(pVCpu->hwaccm.s.svm.pVMCBPhys) == 8);
1030	Assert(pVMCB->ctrl.u32InterceptCtrl2 == ( SVM_CTRL2_INTERCEPT_VMRUN /* required */
1031	\| SVM_CTRL2_INTERCEPT_VMMCALL
1032	\| SVM_CTRL2_INTERCEPT_VMLOAD
1033	\| SVM_CTRL2_INTERCEPT_VMSAVE
1034	\| SVM_CTRL2_INTERCEPT_STGI
1035	\| SVM_CTRL2_INTERCEPT_CLGI
1036	\| SVM_CTRL2_INTERCEPT_SKINIT
1037	\| SVM_CTRL2_INTERCEPT_RDTSCP /* AMD only; we don't support this one */
1038	\| SVM_CTRL2_INTERCEPT_WBINVD
1039	\| SVM_CTRL2_INTERCEPT_MWAIT_UNCOND /* don't execute mwait or else we'll idle inside the guest (host thinks the cpu load is high) */
1040	));
1041	Assert(pVMCB->ctrl.IntCtrl.n.u1VIrqMasking);
1042	Assert(pVMCB->ctrl.u64IOPMPhysAddr == pVM->hwaccm.s.svm.pIOBitmapPhys);
1043	Assert(pVMCB->ctrl.u64MSRPMPhysAddr == pVM->hwaccm.s.svm.pMSRBitmapPhys);
1044	Assert(pVMCB->ctrl.u64LBRVirt == 0);
1045
1046	#ifdef VBOX_STRICT
1047	Assert(idCpuCheck == RTMpCpuId());
1048	#endif
1049	TMNotifyStartOfExecution(pVM);
1050	pVCpu->hwaccm.s.svm.pfnVMRun(pVM->hwaccm.s.svm.pVMCBHostPhys, pVCpu->hwaccm.s.svm.pVMCBPhys, pCtx);
1051	TMNotifyEndOfExecution(pVM);
1052	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatInGC, x);
1053
1054	/*
1055	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1056	* IMPORTANT: WE CAN'T DO ANY LOGGING OR OPERATIONS THAT CAN DO A LONGJMP BACK TO RING 3 BEFORE WE'VE SYNCED BACK (MOST OF) THE GUEST STATE
1057	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1058	*/
1059
1060	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatExit, x);
1061
1062	/* Reason for the VM exit */
1063	exitCode = pVMCB->ctrl.u64ExitCode;
1064
1065	if (exitCode == (uint64_t)SVM_EXIT_INVALID) /* Invalid guest state. */
1066	{
1067	HWACCMDumpRegs(pVM, pCtx);
1068	#ifdef DEBUG
1069	Log(("ctrl.u16InterceptRdCRx %x\n", pVMCB->ctrl.u16InterceptRdCRx));
1070	Log(("ctrl.u16InterceptWrCRx %x\n", pVMCB->ctrl.u16InterceptWrCRx));
1071	Log(("ctrl.u16InterceptRdDRx %x\n", pVMCB->ctrl.u16InterceptRdDRx));
1072	Log(("ctrl.u16InterceptWrDRx %x\n", pVMCB->ctrl.u16InterceptWrDRx));
1073	Log(("ctrl.u32InterceptException %x\n", pVMCB->ctrl.u32InterceptException));
1074	Log(("ctrl.u32InterceptCtrl1 %x\n", pVMCB->ctrl.u32InterceptCtrl1));
1075	Log(("ctrl.u32InterceptCtrl2 %x\n", pVMCB->ctrl.u32InterceptCtrl2));
1076	Log(("ctrl.u64IOPMPhysAddr %RX64\n", pVMCB->ctrl.u64IOPMPhysAddr));
1077	Log(("ctrl.u64MSRPMPhysAddr %RX64\n", pVMCB->ctrl.u64MSRPMPhysAddr));
1078	Log(("ctrl.u64TSCOffset %RX64\n", pVMCB->ctrl.u64TSCOffset));
1079
1080	Log(("ctrl.TLBCtrl.u32ASID %x\n", pVMCB->ctrl.TLBCtrl.n.u32ASID));
1081	Log(("ctrl.TLBCtrl.u1TLBFlush %x\n", pVMCB->ctrl.TLBCtrl.n.u1TLBFlush));
1082	Log(("ctrl.TLBCtrl.u7Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u7Reserved));
1083	Log(("ctrl.TLBCtrl.u24Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u24Reserved));
1084
1085	Log(("ctrl.IntCtrl.u8VTPR %x\n", pVMCB->ctrl.IntCtrl.n.u8VTPR));
1086	Log(("ctrl.IntCtrl.u1VIrqValid %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqValid));
1087	Log(("ctrl.IntCtrl.u7Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved));
1088	Log(("ctrl.IntCtrl.u4VIrqPriority %x\n", pVMCB->ctrl.IntCtrl.n.u4VIrqPriority));
1089	Log(("ctrl.IntCtrl.u1IgnoreTPR %x\n", pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR));
1090	Log(("ctrl.IntCtrl.u3Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u3Reserved));
1091	Log(("ctrl.IntCtrl.u1VIrqMasking %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqMasking));
1092	Log(("ctrl.IntCtrl.u7Reserved2 %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved2));
1093	Log(("ctrl.IntCtrl.u8VIrqVector %x\n", pVMCB->ctrl.IntCtrl.n.u8VIrqVector));
1094	Log(("ctrl.IntCtrl.u24Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u24Reserved));
1095
1096	Log(("ctrl.u64IntShadow %RX64\n", pVMCB->ctrl.u64IntShadow));
1097	Log(("ctrl.u64ExitCode %RX64\n", pVMCB->ctrl.u64ExitCode));
1098	Log(("ctrl.u64ExitInfo1 %RX64\n", pVMCB->ctrl.u64ExitInfo1));
1099	Log(("ctrl.u64ExitInfo2 %RX64\n", pVMCB->ctrl.u64ExitInfo2));
1100	Log(("ctrl.ExitIntInfo.u8Vector %x\n", pVMCB->ctrl.ExitIntInfo.n.u8Vector));
1101	Log(("ctrl.ExitIntInfo.u3Type %x\n", pVMCB->ctrl.ExitIntInfo.n.u3Type));
1102	Log(("ctrl.ExitIntInfo.u1ErrorCodeValid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
1103	Log(("ctrl.ExitIntInfo.u19Reserved %x\n", pVMCB->ctrl.ExitIntInfo.n.u19Reserved));
1104	Log(("ctrl.ExitIntInfo.u1Valid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1Valid));
1105	Log(("ctrl.ExitIntInfo.u32ErrorCode %x\n", pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode));
1106	Log(("ctrl.NestedPaging %RX64\n", pVMCB->ctrl.NestedPaging.au64));
1107	Log(("ctrl.EventInject.u8Vector %x\n", pVMCB->ctrl.EventInject.n.u8Vector));
1108	Log(("ctrl.EventInject.u3Type %x\n", pVMCB->ctrl.EventInject.n.u3Type));
1109	Log(("ctrl.EventInject.u1ErrorCodeValid %x\n", pVMCB->ctrl.EventInject.n.u1ErrorCodeValid));
1110	Log(("ctrl.EventInject.u19Reserved %x\n", pVMCB->ctrl.EventInject.n.u19Reserved));
1111	Log(("ctrl.EventInject.u1Valid %x\n", pVMCB->ctrl.EventInject.n.u1Valid));
1112	Log(("ctrl.EventInject.u32ErrorCode %x\n", pVMCB->ctrl.EventInject.n.u32ErrorCode));
1113
1114	Log(("ctrl.u64NestedPagingCR3 %RX64\n", pVMCB->ctrl.u64NestedPagingCR3));
1115	Log(("ctrl.u64LBRVirt %RX64\n", pVMCB->ctrl.u64LBRVirt));
1116
1117	Log(("guest.CS.u16Sel %04X\n", pVMCB->guest.CS.u16Sel));
1118	Log(("guest.CS.u16Attr %04X\n", pVMCB->guest.CS.u16Attr));
1119	Log(("guest.CS.u32Limit %X\n", pVMCB->guest.CS.u32Limit));
1120	Log(("guest.CS.u64Base %RX64\n", pVMCB->guest.CS.u64Base));
1121	Log(("guest.DS.u16Sel %04X\n", pVMCB->guest.DS.u16Sel));
1122	Log(("guest.DS.u16Attr %04X\n", pVMCB->guest.DS.u16Attr));
1123	Log(("guest.DS.u32Limit %X\n", pVMCB->guest.DS.u32Limit));
1124	Log(("guest.DS.u64Base %RX64\n", pVMCB->guest.DS.u64Base));
1125	Log(("guest.ES.u16Sel %04X\n", pVMCB->guest.ES.u16Sel));
1126	Log(("guest.ES.u16Attr %04X\n", pVMCB->guest.ES.u16Attr));
1127	Log(("guest.ES.u32Limit %X\n", pVMCB->guest.ES.u32Limit));
1128	Log(("guest.ES.u64Base %RX64\n", pVMCB->guest.ES.u64Base));
1129	Log(("guest.FS.u16Sel %04X\n", pVMCB->guest.FS.u16Sel));
1130	Log(("guest.FS.u16Attr %04X\n", pVMCB->guest.FS.u16Attr));
1131	Log(("guest.FS.u32Limit %X\n", pVMCB->guest.FS.u32Limit));
1132	Log(("guest.FS.u64Base %RX64\n", pVMCB->guest.FS.u64Base));
1133	Log(("guest.GS.u16Sel %04X\n", pVMCB->guest.GS.u16Sel));
1134	Log(("guest.GS.u16Attr %04X\n", pVMCB->guest.GS.u16Attr));
1135	Log(("guest.GS.u32Limit %X\n", pVMCB->guest.GS.u32Limit));
1136	Log(("guest.GS.u64Base %RX64\n", pVMCB->guest.GS.u64Base));
1137
1138	Log(("guest.GDTR.u32Limit %X\n", pVMCB->guest.GDTR.u32Limit));
1139	Log(("guest.GDTR.u64Base %RX64\n", pVMCB->guest.GDTR.u64Base));
1140
1141	Log(("guest.LDTR.u16Sel %04X\n", pVMCB->guest.LDTR.u16Sel));
1142	Log(("guest.LDTR.u16Attr %04X\n", pVMCB->guest.LDTR.u16Attr));
1143	Log(("guest.LDTR.u32Limit %X\n", pVMCB->guest.LDTR.u32Limit));
1144	Log(("guest.LDTR.u64Base %RX64\n", pVMCB->guest.LDTR.u64Base));
1145
1146	Log(("guest.IDTR.u32Limit %X\n", pVMCB->guest.IDTR.u32Limit));
1147	Log(("guest.IDTR.u64Base %RX64\n", pVMCB->guest.IDTR.u64Base));
1148
1149	Log(("guest.TR.u16Sel %04X\n", pVMCB->guest.TR.u16Sel));
1150	Log(("guest.TR.u16Attr %04X\n", pVMCB->guest.TR.u16Attr));
1151	Log(("guest.TR.u32Limit %X\n", pVMCB->guest.TR.u32Limit));
1152	Log(("guest.TR.u64Base %RX64\n", pVMCB->guest.TR.u64Base));
1153
1154	Log(("guest.u8CPL %X\n", pVMCB->guest.u8CPL));
1155	Log(("guest.u64CR0 %RX64\n", pVMCB->guest.u64CR0));
1156	Log(("guest.u64CR2 %RX64\n", pVMCB->guest.u64CR2));
1157	Log(("guest.u64CR3 %RX64\n", pVMCB->guest.u64CR3));
1158	Log(("guest.u64CR4 %RX64\n", pVMCB->guest.u64CR4));
1159	Log(("guest.u64DR6 %RX64\n", pVMCB->guest.u64DR6));
1160	Log(("guest.u64DR7 %RX64\n", pVMCB->guest.u64DR7));
1161
1162	Log(("guest.u64RIP %RX64\n", pVMCB->guest.u64RIP));
1163	Log(("guest.u64RSP %RX64\n", pVMCB->guest.u64RSP));
1164	Log(("guest.u64RAX %RX64\n", pVMCB->guest.u64RAX));
1165	Log(("guest.u64RFlags %RX64\n", pVMCB->guest.u64RFlags));
1166
1167	Log(("guest.u64SysEnterCS %RX64\n", pVMCB->guest.u64SysEnterCS));
1168	Log(("guest.u64SysEnterEIP %RX64\n", pVMCB->guest.u64SysEnterEIP));
1169	Log(("guest.u64SysEnterESP %RX64\n", pVMCB->guest.u64SysEnterESP));
1170
1171	Log(("guest.u64EFER %RX64\n", pVMCB->guest.u64EFER));
1172	Log(("guest.u64STAR %RX64\n", pVMCB->guest.u64STAR));
1173	Log(("guest.u64LSTAR %RX64\n", pVMCB->guest.u64LSTAR));
1174	Log(("guest.u64CSTAR %RX64\n", pVMCB->guest.u64CSTAR));
1175	Log(("guest.u64SFMASK %RX64\n", pVMCB->guest.u64SFMASK));
1176	Log(("guest.u64KernelGSBase %RX64\n", pVMCB->guest.u64KernelGSBase));
1177	Log(("guest.u64GPAT %RX64\n", pVMCB->guest.u64GPAT));
1178	Log(("guest.u64DBGCTL %RX64\n", pVMCB->guest.u64DBGCTL));
1179	Log(("guest.u64BR_FROM %RX64\n", pVMCB->guest.u64BR_FROM));
1180	Log(("guest.u64BR_TO %RX64\n", pVMCB->guest.u64BR_TO));
1181	Log(("guest.u64LASTEXCPFROM %RX64\n", pVMCB->guest.u64LASTEXCPFROM));
1182	Log(("guest.u64LASTEXCPTO %RX64\n", pVMCB->guest.u64LASTEXCPTO));
1183
1184	#endif
1185	rc = VERR_SVM_UNABLE_TO_START_VM;
1186	goto end;
1187	}
1188
1189	/* Let's first sync back eip, esp, and eflags. */
1190	pCtx->rip = pVMCB->guest.u64RIP;
1191	pCtx->rsp = pVMCB->guest.u64RSP;
1192	pCtx->eflags.u32 = pVMCB->guest.u64RFlags;
1193	/* eax is saved/restore across the vmrun instruction */
1194	pCtx->rax = pVMCB->guest.u64RAX;
1195
1196	pCtx->msrKERNELGSBASE = pVMCB->guest.u64KernelGSBase; /* swapgs exchange value */
1197
1198	/* Can be updated behind our back in the nested paging case. */
1199	pCtx->cr2 = pVMCB->guest.u64CR2;
1200
1201	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
1202	SVM_READ_SELREG(SS, ss);
1203	SVM_READ_SELREG(CS, cs);
1204	SVM_READ_SELREG(DS, ds);
1205	SVM_READ_SELREG(ES, es);
1206	SVM_READ_SELREG(FS, fs);
1207	SVM_READ_SELREG(GS, gs);
1208
1209	/*
1210	* System MSRs
1211	*/
1212	pCtx->SysEnter.cs = pVMCB->guest.u64SysEnterCS;
1213	pCtx->SysEnter.eip = pVMCB->guest.u64SysEnterEIP;
1214	pCtx->SysEnter.esp = pVMCB->guest.u64SysEnterESP;
1215
1216	/* Remaining guest CPU context: TR, IDTR, GDTR, LDTR; must sync everything otherwise we can get out of sync when jumping to ring 3. */
1217	SVM_READ_SELREG(LDTR, ldtr);
1218	SVM_READ_SELREG(TR, tr);
1219
1220	pCtx->gdtr.cbGdt = pVMCB->guest.GDTR.u32Limit;
1221	pCtx->gdtr.pGdt = pVMCB->guest.GDTR.u64Base;
1222
1223	pCtx->idtr.cbIdt = pVMCB->guest.IDTR.u32Limit;
1224	pCtx->idtr.pIdt = pVMCB->guest.IDTR.u64Base;
1225
1226	/* Note: no reason to sync back the CRx and DRx registers. They can't be changed by the guest. */
1227	/* Note: only in the nested paging case can CR3 & CR4 be changed by the guest. */
1228	if ( pVM->hwaccm.s.fNestedPaging
1229	&& pCtx->cr3 != pVMCB->guest.u64CR3)
1230	{
1231	CPUMSetGuestCR3(pVM, pVMCB->guest.u64CR3);
1232	PGMUpdateCR3(pVM, pVMCB->guest.u64CR3);
1233	}
1234
1235	/* Note! NOW IT'S SAFE FOR LOGGING! */
1236
1237	/* Take care of instruction fusing (sti, mov ss) (see 15.20.5 Interrupt Shadows) */
1238	if (pVMCB->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
1239	{
1240	Log(("uInterruptState %x rip=%RGv\n", pVMCB->ctrl.u64IntShadow, (RTGCPTR)pCtx->rip));
1241	EMSetInhibitInterruptsPC(pVM, pCtx->rip);
1242	}
1243	else
1244	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
1245
1246	Log2(("exitCode = %x\n", exitCode));
1247
1248	/* Sync back DR6 as it could have been changed by hitting breakpoints. */
1249	pCtx->dr[6] = pVMCB->guest.u64DR6;
1250	/* DR7.GD can be cleared by debug exceptions, so sync it back as well. */
1251	pCtx->dr[7] = pVMCB->guest.u64DR7;
1252
1253	/* Check if an injected event was interrupted prematurely. */
1254	pVCpu->hwaccm.s.Event.intInfo = pVMCB->ctrl.ExitIntInfo.au64[0];
1255	if ( pVMCB->ctrl.ExitIntInfo.n.u1Valid
1256	&& pVMCB->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT /* we don't care about 'int xx' as the instruction will be restarted. */)
1257	{
1258	Log(("Pending inject %RX64 at %RGv exit=%08x\n", pVCpu->hwaccm.s.Event.intInfo, (RTGCPTR)pCtx->rip, exitCode));
1259
1260	#ifdef LOG_ENABLED
1261	SVM_EVENT Event;
1262	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
1263
1264	if ( exitCode == SVM_EXIT_EXCEPTION_E
1265	&& Event.n.u8Vector == 0xE)
1266	{
1267	Log(("Double fault!\n"));
1268	}
1269	#endif
1270
1271	pVCpu->hwaccm.s.Event.fPending = true;
1272	/* Error code present? (redundant) */
1273	if (pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid)
1274	{
1275	pVCpu->hwaccm.s.Event.errCode = pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode;
1276	}
1277	else
1278	pVCpu->hwaccm.s.Event.errCode = 0;
1279	}
1280	#ifdef VBOX_WITH_STATISTICS
1281	if (exitCode == SVM_EXIT_NPF)
1282	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitReasonNPF);
1283	else
1284	STAM_COUNTER_INC(&pVCpu->hwaccm.s.paStatExitReasonR0[exitCode & MASK_EXITREASON_STAT]);
1285	#endif
1286
1287	if (fSyncTPR)
1288	{
1289	rc = PDMApicSetTPR(pVM, pVMCB->ctrl.IntCtrl.n.u8VTPR);
1290	AssertRC(rc);
1291	}
1292
1293	/* Deal with the reason of the VM-exit. */
1294	switch (exitCode)
1295	{
1296	case SVM_EXIT_EXCEPTION_0: case SVM_EXIT_EXCEPTION_1: case SVM_EXIT_EXCEPTION_2: case SVM_EXIT_EXCEPTION_3:
1297	case SVM_EXIT_EXCEPTION_4: case SVM_EXIT_EXCEPTION_5: case SVM_EXIT_EXCEPTION_6: case SVM_EXIT_EXCEPTION_7:
1298	case SVM_EXIT_EXCEPTION_8: case SVM_EXIT_EXCEPTION_9: case SVM_EXIT_EXCEPTION_A: case SVM_EXIT_EXCEPTION_B:
1299	case SVM_EXIT_EXCEPTION_C: case SVM_EXIT_EXCEPTION_D: case SVM_EXIT_EXCEPTION_E: case SVM_EXIT_EXCEPTION_F:
1300	case SVM_EXIT_EXCEPTION_10: case SVM_EXIT_EXCEPTION_11: case SVM_EXIT_EXCEPTION_12: case SVM_EXIT_EXCEPTION_13:
1301	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16: case SVM_EXIT_EXCEPTION_17:
1302	case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19: case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B:
1303	case SVM_EXIT_EXCEPTION_1C: case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
1304	{
1305	/* Pending trap. */
1306	SVM_EVENT Event;
1307	uint32_t vector = exitCode - SVM_EXIT_EXCEPTION_0;
1308
1309	Log2(("Hardware/software interrupt %d\n", vector));
1310	switch (vector)
1311	{
1312	case X86_XCPT_DB:
1313	{
1314	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDB);
1315
1316	/* Note that we don't support guest and host-initiated debugging at the same time. */
1317	Assert(DBGFIsStepping(pVM));
1318
1319	rc = DBGFR0Trap01Handler(pVM, CPUMCTX2CORE(pCtx), pCtx->dr[6]);
1320	if (rc == VINF_EM_RAW_GUEST_TRAP)
1321	{
1322	Log(("Trap %x (debug) at %016RX64\n", vector, pCtx->rip));
1323
1324	/* Reinject the exception. */
1325	Event.au64[0] = 0;
1326	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1327	Event.n.u1Valid = 1;
1328	Event.n.u8Vector = X86_XCPT_DB;
1329
1330	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1331
1332	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1333	goto ResumeExecution;
1334	}
1335	/* Return to ring 3 to deal with the debug exit code. */
1336	break;
1337	}
1338
1339	case X86_XCPT_NM:
1340	{
1341	Log(("#NM fault at %RGv\n", (RTGCPTR)pCtx->rip));
1342
1343	/** @todo don't intercept #NM exceptions anymore when we've activated the guest FPU state. */
1344	/* If we sync the FPU/XMM state on-demand, then we can continue execution as if nothing has happened. */
1345	rc = CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
1346	if (rc == VINF_SUCCESS)
1347	{
1348	Assert(CPUMIsGuestFPUStateActive(pVCpu));
1349	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowNM);
1350
1351	/* Continue execution. */
1352	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1353	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1354
1355	goto ResumeExecution;
1356	}
1357
1358	Log(("Forward #NM fault to the guest\n"));
1359	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNM);
1360
1361	Event.au64[0] = 0;
1362	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1363	Event.n.u1Valid = 1;
1364	Event.n.u8Vector = X86_XCPT_NM;
1365
1366	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1367	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1368	goto ResumeExecution;
1369	}
1370
1371	case X86_XCPT_PF: /* Page fault */
1372	{
1373	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1374	RTGCUINTPTR uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1375
1376	#ifdef DEBUG
1377	if (pVM->hwaccm.s.fNestedPaging)
1378	{ /* A genuine pagefault.
1379	* Forward the trap to the guest by injecting the exception and resuming execution.
1380	*/
1381	Log(("Guest page fault at %RGv cr2=%RGv error code %x rsp=%RGv\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode, (RTGCPTR)pCtx->rsp));
1382	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1383
1384	/* Now we must update CR2. */
1385	pCtx->cr2 = uFaultAddress;
1386
1387	Event.au64[0] = 0;
1388	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1389	Event.n.u1Valid = 1;
1390	Event.n.u8Vector = X86_XCPT_PF;
1391	Event.n.u1ErrorCodeValid = 1;
1392	Event.n.u32ErrorCode = errCode;
1393
1394	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1395
1396	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1397	goto ResumeExecution;
1398	}
1399	#endif
1400	Assert(!pVM->hwaccm.s.fNestedPaging);
1401
1402	Log2(("Page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1403	/* Exit qualification contains the linear address of the page fault. */
1404	TRPMAssertTrap(pVM, X86_XCPT_PF, TRPM_TRAP);
1405	TRPMSetErrorCode(pVM, errCode);
1406	TRPMSetFaultAddress(pVM, uFaultAddress);
1407
1408	/* Forward it to our trap handler first, in case our shadow pages are out of sync. */
1409	rc = PGMTrap0eHandler(pVM, errCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
1410	Log2(("PGMTrap0eHandler %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, rc));
1411	if (rc == VINF_SUCCESS)
1412	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1413	Log2(("Shadow page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1414	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1415
1416	TRPMResetTrap(pVM);
1417
1418	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1419	goto ResumeExecution;
1420	}
1421	else
1422	if (rc == VINF_EM_RAW_GUEST_TRAP)
1423	{ /* A genuine pagefault.
1424	* Forward the trap to the guest by injecting the exception and resuming execution.
1425	*/
1426	Log2(("Forward page fault to the guest\n"));
1427	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1428	/* The error code might have been changed. */
1429	errCode = TRPMGetErrorCode(pVM);
1430
1431	TRPMResetTrap(pVM);
1432
1433	/* Now we must update CR2. */
1434	pCtx->cr2 = uFaultAddress;
1435
1436	Event.au64[0] = 0;
1437	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1438	Event.n.u1Valid = 1;
1439	Event.n.u8Vector = X86_XCPT_PF;
1440	Event.n.u1ErrorCodeValid = 1;
1441	Event.n.u32ErrorCode = errCode;
1442
1443	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1444
1445	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1446	goto ResumeExecution;
1447	}
1448	#ifdef VBOX_STRICT
1449	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1450	LogFlow(("PGMTrap0eHandler failed with %d\n", rc));
1451	#endif
1452	/* Need to go back to the recompiler to emulate the instruction. */
1453	TRPMResetTrap(pVM);
1454	break;
1455	}
1456
1457	case X86_XCPT_MF: /* Floating point exception. */
1458	{
1459	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestMF);
1460	if (!(pCtx->cr0 & X86_CR0_NE))
1461	{
1462	/* old style FPU error reporting needs some extra work. */
1463	/** @todo don't fall back to the recompiler, but do it manually. */
1464	rc = VINF_EM_RAW_EMULATE_INSTR;
1465	break;
1466	}
1467	Log(("Trap %x at %RGv\n", vector, (RTGCPTR)pCtx->rip));
1468
1469	Event.au64[0] = 0;
1470	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1471	Event.n.u1Valid = 1;
1472	Event.n.u8Vector = X86_XCPT_MF;
1473
1474	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1475
1476	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1477	goto ResumeExecution;
1478	}
1479
1480	#ifdef VBOX_STRICT
1481	case X86_XCPT_GP: /* General protection failure exception.*/
1482	case X86_XCPT_UD: /* Unknown opcode exception. */
1483	case X86_XCPT_DE: /* Divide error. */
1484	case X86_XCPT_SS: /* Stack segment exception. */
1485	case X86_XCPT_NP: /* Segment not present exception. */
1486	{
1487	Event.au64[0] = 0;
1488	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1489	Event.n.u1Valid = 1;
1490	Event.n.u8Vector = vector;
1491
1492	switch(vector)
1493	{
1494	case X86_XCPT_GP:
1495	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestGP);
1496	Event.n.u1ErrorCodeValid = 1;
1497	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1498	break;
1499	case X86_XCPT_DE:
1500	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDE);
1501	break;
1502	case X86_XCPT_UD:
1503	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestUD);
1504	break;
1505	case X86_XCPT_SS:
1506	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestSS);
1507	Event.n.u1ErrorCodeValid = 1;
1508	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1509	break;
1510	case X86_XCPT_NP:
1511	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNP);
1512	Event.n.u1ErrorCodeValid = 1;
1513	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1514	break;
1515	}
1516	Log(("Trap %x at %RGv esi=%x\n", vector, (RTGCPTR)pCtx->rip, pCtx->esi));
1517	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1518
1519	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1520	goto ResumeExecution;
1521	}
1522	#endif
1523	default:
1524	AssertMsgFailed(("Unexpected vm-exit caused by exception %x\n", vector));
1525	rc = VERR_EM_INTERNAL_ERROR;
1526	break;
1527
1528	} /* switch (vector) */
1529	break;
1530	}
1531
1532	case SVM_EXIT_NPF:
1533	{
1534	/* EXITINFO1 contains fault errorcode; EXITINFO2 contains the guest physical address causing the fault. */
1535	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1536	RTGCPHYS uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1537
1538	Assert(pVM->hwaccm.s.fNestedPaging);
1539	Log(("Nested page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1540	/* Exit qualification contains the linear address of the page fault. */
1541	TRPMAssertTrap(pVM, X86_XCPT_PF, TRPM_TRAP);
1542	TRPMSetErrorCode(pVM, errCode);
1543	TRPMSetFaultAddress(pVM, uFaultAddress);
1544
1545	/* Handle the pagefault trap for the nested shadow table. */
1546	rc = PGMR0Trap0eHandlerNestedPaging(pVM, PGMGetHostMode(pVM), errCode, CPUMCTX2CORE(pCtx), uFaultAddress);
1547	Log2(("PGMR0Trap0eHandlerNestedPaging %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, rc));
1548	if (rc == VINF_SUCCESS)
1549	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1550	Log2(("Shadow page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1551	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1552
1553	TRPMResetTrap(pVM);
1554
1555	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1556	goto ResumeExecution;
1557	}
1558
1559	#ifdef VBOX_STRICT
1560	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1561	LogFlow(("PGMTrap0eHandlerNestedPaging failed with %d\n", rc));
1562	#endif
1563	/* Need to go back to the recompiler to emulate the instruction. */
1564	TRPMResetTrap(pVM);
1565	break;
1566	}
1567
1568	case SVM_EXIT_VINTR:
1569	/* A virtual interrupt is about to be delivered, which means IF=1. */
1570	Log(("SVM_EXIT_VINTR IF=%d\n", pCtx->eflags.Bits.u1IF));
1571	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 0;
1572	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0;
1573	goto ResumeExecution;
1574
1575	case SVM_EXIT_FERR_FREEZE:
1576	case SVM_EXIT_INTR:
1577	case SVM_EXIT_NMI:
1578	case SVM_EXIT_SMI:
1579	case SVM_EXIT_INIT:
1580	/* External interrupt; leave to allow it to be dispatched again. */
1581	rc = VINF_EM_RAW_INTERRUPT;
1582	break;
1583
1584	case SVM_EXIT_WBINVD:
1585	case SVM_EXIT_INVD: /* Guest software attempted to execute INVD. */
1586	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvd);
1587	/* Skip instruction and continue directly. */
1588	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1589	/* Continue execution.*/
1590	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1591	goto ResumeExecution;
1592
1593	case SVM_EXIT_CPUID: /* Guest software attempted to execute CPUID. */
1594	{
1595	Log2(("SVM: Cpuid at %RGv for %x\n", (RTGCPTR)pCtx->rip, pCtx->eax));
1596	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCpuid);
1597	rc = EMInterpretCpuId(pVM, CPUMCTX2CORE(pCtx));
1598	if (rc == VINF_SUCCESS)
1599	{
1600	/* Update EIP and continue execution. */
1601	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1602	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1603	goto ResumeExecution;
1604	}
1605	AssertMsgFailed(("EMU: cpuid failed with %Rrc\n", rc));
1606	rc = VINF_EM_RAW_EMULATE_INSTR;
1607	break;
1608	}
1609
1610	case SVM_EXIT_RDTSC: /* Guest software attempted to execute RDTSC. */
1611	{
1612	Log2(("SVM: Rdtsc\n"));
1613	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
1614	rc = EMInterpretRdtsc(pVM, CPUMCTX2CORE(pCtx));
1615	if (rc == VINF_SUCCESS)
1616	{
1617	/* Update EIP and continue execution. */
1618	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1619	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1620	goto ResumeExecution;
1621	}
1622	AssertMsgFailed(("EMU: rdtsc failed with %Rrc\n", rc));
1623	rc = VINF_EM_RAW_EMULATE_INSTR;
1624	break;
1625	}
1626
1627	case SVM_EXIT_INVLPG: /* Guest software attempted to execute INVPG. */
1628	{
1629	Log2(("SVM: invlpg\n"));
1630	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvpg);
1631
1632	Assert(!pVM->hwaccm.s.fNestedPaging);
1633
1634	/* Truly a pita. Why can't SVM give the same information as VT-x? */
1635	rc = SVMR0InterpretInvpg(pVM, CPUMCTX2CORE(pCtx), pVMCB->ctrl.TLBCtrl.n.u32ASID);
1636	if (rc == VINF_SUCCESS)
1637	{
1638	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageInvlpg);
1639	goto ResumeExecution; /* eip already updated */
1640	}
1641	break;
1642	}
1643
1644	case SVM_EXIT_WRITE_CR0: case SVM_EXIT_WRITE_CR1: case SVM_EXIT_WRITE_CR2: case SVM_EXIT_WRITE_CR3:
1645	case SVM_EXIT_WRITE_CR4: case SVM_EXIT_WRITE_CR5: case SVM_EXIT_WRITE_CR6: case SVM_EXIT_WRITE_CR7:
1646	case SVM_EXIT_WRITE_CR8: case SVM_EXIT_WRITE_CR9: case SVM_EXIT_WRITE_CR10: case SVM_EXIT_WRITE_CR11:
1647	case SVM_EXIT_WRITE_CR12: case SVM_EXIT_WRITE_CR13: case SVM_EXIT_WRITE_CR14: case SVM_EXIT_WRITE_CR15:
1648	{
1649	uint32_t cbSize;
1650
1651	Log2(("SVM: %RGv mov cr%d, \n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_CR0));
1652	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxWrite);
1653	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1654
1655	switch (exitCode - SVM_EXIT_WRITE_CR0)
1656	{
1657	case 0:
1658	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1659	break;
1660	case 2:
1661	break;
1662	case 3:
1663	Assert(!pVM->hwaccm.s.fNestedPaging);
1664	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR3;
1665	break;
1666	case 4:
1667	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR4;
1668	break;
1669	case 8:
1670	break;
1671	default:
1672	AssertFailed();
1673	}
1674	/* Check if a sync operation is pending. */
1675	if ( rc == VINF_SUCCESS /* don't bother if we are going to ring 3 anyway */
1676	&& VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL))
1677	{
1678	rc = PGMSyncCR3(pVM, CPUMGetGuestCR0(pVM), CPUMGetGuestCR3(pVM), CPUMGetGuestCR4(pVM), VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
1679	AssertRC(rc);
1680
1681	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBCRxChange);
1682
1683	/* Must be set by PGMSyncCR3 */
1684	Assert(PGMGetGuestMode(pVM) <= PGMMODE_PROTECTED \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1685	}
1686	if (rc == VINF_SUCCESS)
1687	{
1688	/* EIP has been updated already. */
1689
1690	/* Only resume if successful. */
1691	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1692	goto ResumeExecution;
1693	}
1694	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1695	break;
1696	}
1697
1698	case SVM_EXIT_READ_CR0: case SVM_EXIT_READ_CR1: case SVM_EXIT_READ_CR2: case SVM_EXIT_READ_CR3:
1699	case SVM_EXIT_READ_CR4: case SVM_EXIT_READ_CR5: case SVM_EXIT_READ_CR6: case SVM_EXIT_READ_CR7:
1700	case SVM_EXIT_READ_CR8: case SVM_EXIT_READ_CR9: case SVM_EXIT_READ_CR10: case SVM_EXIT_READ_CR11:
1701	case SVM_EXIT_READ_CR12: case SVM_EXIT_READ_CR13: case SVM_EXIT_READ_CR14: case SVM_EXIT_READ_CR15:
1702	{
1703	uint32_t cbSize;
1704
1705	Log2(("SVM: %RGv mov x, cr%d\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_CR0));
1706	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxRead);
1707	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1708	if (rc == VINF_SUCCESS)
1709	{
1710	/* EIP has been updated already. */
1711
1712	/* Only resume if successful. */
1713	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1714	goto ResumeExecution;
1715	}
1716	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1717	break;
1718	}
1719
1720	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
1721	case SVM_EXIT_WRITE_DR4: case SVM_EXIT_WRITE_DR5: case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7:
1722	case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9: case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11:
1723	case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13: case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
1724	{
1725	uint32_t cbSize;
1726
1727	Log2(("SVM: %RGv mov dr%d, x\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_DR0));
1728	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxRead);
1729
1730	if (!DBGFIsStepping(pVM))
1731	{
1732	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
1733
1734	/* Disable drx move intercepts. */
1735	pVMCB->ctrl.u16InterceptRdDRx = 0;
1736	pVMCB->ctrl.u16InterceptWrDRx = 0;
1737
1738	/* Save the host and load the guest debug state. */
1739	rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
1740	AssertRC(rc);
1741
1742	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1743	goto ResumeExecution;
1744	}
1745
1746	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1747	if (rc == VINF_SUCCESS)
1748	{
1749	/* EIP has been updated already. */
1750	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
1751
1752	/* Only resume if successful. */
1753	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1754	goto ResumeExecution;
1755	}
1756	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1757	break;
1758	}
1759
1760	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
1761	case SVM_EXIT_READ_DR4: case SVM_EXIT_READ_DR5: case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7:
1762	case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9: case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11:
1763	case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13: case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
1764	{
1765	uint32_t cbSize;
1766
1767	Log2(("SVM: %RGv mov dr%d, x\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_DR0));
1768	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxRead);
1769
1770	if (!DBGFIsStepping(pVM))
1771	{
1772	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
1773
1774	/* Disable drx move intercepts. */
1775	pVMCB->ctrl.u16InterceptRdDRx = 0;
1776	pVMCB->ctrl.u16InterceptWrDRx = 0;
1777
1778	/* Save the host and load the guest debug state. */
1779	rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
1780	AssertRC(rc);
1781
1782	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1783	goto ResumeExecution;
1784	}
1785
1786	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1787	if (rc == VINF_SUCCESS)
1788	{
1789	/* EIP has been updated already. */
1790
1791	/* Only resume if successful. */
1792	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1793	goto ResumeExecution;
1794	}
1795	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1796	break;
1797	}
1798
1799	/* Note: We'll get a #GP if the IO instruction isn't allowed (IOPL or TSS bitmap); no need to double check. */
1800	case SVM_EXIT_IOIO: /* I/O instruction. */
1801	{
1802	SVM_IOIO_EXIT IoExitInfo;
1803	uint32_t uIOSize, uAndVal;
1804
1805	IoExitInfo.au32[0] = pVMCB->ctrl.u64ExitInfo1;
1806
1807	/** @todo could use a lookup table here */
1808	if (IoExitInfo.n.u1OP8)
1809	{
1810	uIOSize = 1;
1811	uAndVal = 0xff;
1812	}
1813	else
1814	if (IoExitInfo.n.u1OP16)
1815	{
1816	uIOSize = 2;
1817	uAndVal = 0xffff;
1818	}
1819	else
1820	if (IoExitInfo.n.u1OP32)
1821	{
1822	uIOSize = 4;
1823	uAndVal = 0xffffffff;
1824	}
1825	else
1826	{
1827	AssertFailed(); /* should be fatal. */
1828	rc = VINF_EM_RAW_EMULATE_INSTR;
1829	break;
1830	}
1831
1832	if (IoExitInfo.n.u1STR)
1833	{
1834	/* ins/outs */
1835	uint32_t prefix = 0;
1836	if (IoExitInfo.n.u1REP)
1837	prefix \|= PREFIX_REP;
1838
1839	if (IoExitInfo.n.u1Type == 0)
1840	{
1841	Log2(("IOMInterpretOUTSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1842	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringWrite);
1843	rc = IOMInterpretOUTSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, prefix, uIOSize);
1844	}
1845	else
1846	{
1847	Log2(("IOMInterpretINSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1848	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringRead);
1849	rc = IOMInterpretINSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, prefix, uIOSize);
1850	}
1851	}
1852	else
1853	{
1854	/* normal in/out */
1855	Assert(!IoExitInfo.n.u1REP);
1856
1857	if (IoExitInfo.n.u1Type == 0)
1858	{
1859	Log2(("IOMIOPortWrite %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize));
1860	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOWrite);
1861	rc = IOMIOPortWrite(pVM, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize);
1862	}
1863	else
1864	{
1865	uint32_t u32Val = 0;
1866
1867	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIORead);
1868	rc = IOMIOPortRead(pVM, IoExitInfo.n.u16Port, &u32Val, uIOSize);
1869	if (IOM_SUCCESS(rc))
1870	{
1871	/* Write back to the EAX register. */
1872	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
1873	Log2(("IOMIOPortRead %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, u32Val & uAndVal, uIOSize));
1874	}
1875	}
1876	}
1877	/*
1878	* Handled the I/O return codes.
1879	* (The unhandled cases end up with rc == VINF_EM_RAW_EMULATE_INSTR.)
1880	*/
1881	if (IOM_SUCCESS(rc))
1882	{
1883	/* Update EIP and continue execution. */
1884	pCtx->rip = pVMCB->ctrl.u64ExitInfo2; /* RIP/EIP of the next instruction is saved in EXITINFO2. */
1885	if (RT_LIKELY(rc == VINF_SUCCESS))
1886	{
1887	/* If any IO breakpoints are armed, then we should check if a debug trap needs to be generated. */
1888	if (pCtx->dr[7] & X86_DR7_ENABLED_MASK)
1889	{
1890	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxIOCheck);
1891	for (unsigned i=0;i<4;i++)
1892	{
1893	unsigned uBPLen = g_aIOSize[X86_DR7_GET_LEN(pCtx->dr[7], i)];
1894
1895	if ( (IoExitInfo.n.u16Port >= pCtx->dr[i] && IoExitInfo.n.u16Port < pCtx->dr[i] + uBPLen)
1896	&& (pCtx->dr[7] & (X86_DR7_L(i) \| X86_DR7_G(i)))
1897	&& (pCtx->dr[7] & X86_DR7_RW(i, X86_DR7_RW_IO)) == X86_DR7_RW(i, X86_DR7_RW_IO))
1898	{
1899	SVM_EVENT Event;
1900
1901	Assert(CPUMIsGuestDebugStateActive(pVM));
1902
1903	/* Clear all breakpoint status flags and set the one we just hit. */
1904	pCtx->dr[6] &= ~(X86_DR6_B0\|X86_DR6_B1\|X86_DR6_B2\|X86_DR6_B3);
1905	pCtx->dr[6] \|= (uint64_t)RT_BIT(i);
1906
1907	/* Note: AMD64 Architecture Programmer's Manual 13.1:
1908	* Bits 15:13 of the DR6 register is never cleared by the processor and must be cleared by software after
1909	* the contents have been read.
1910	*/
1911	pVMCB->guest.u64DR6 = pCtx->dr[6];
1912
1913	/* X86_DR7_GD will be cleared if drx accesses should be trapped inside the guest. */
1914	pCtx->dr[7] &= ~X86_DR7_GD;
1915
1916	/* Paranoia. */
1917	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
1918	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
1919	pCtx->dr[7] \|= 0x400; /* must be one */
1920
1921	pVMCB->guest.u64DR7 = pCtx->dr[7];
1922
1923	/* Inject the exception. */
1924	Log(("Inject IO debug trap at %RGv\n", (RTGCPTR)pCtx->rip));
1925
1926	Event.au64[0] = 0;
1927	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1928	Event.n.u1Valid = 1;
1929	Event.n.u8Vector = X86_XCPT_DB;
1930
1931	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1932
1933	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1934	goto ResumeExecution;
1935	}
1936	}
1937	}
1938
1939	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1940	goto ResumeExecution;
1941	}
1942	Log2(("EM status from IO at %RGv %x size %d: %Rrc\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize, rc));
1943	break;
1944	}
1945
1946	#ifdef VBOX_STRICT
1947	if (rc == VINF_IOM_HC_IOPORT_READ)
1948	Assert(IoExitInfo.n.u1Type != 0);
1949	else if (rc == VINF_IOM_HC_IOPORT_WRITE)
1950	Assert(IoExitInfo.n.u1Type == 0);
1951	else
1952	AssertMsg(RT_FAILURE(rc) \|\| rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", rc));
1953	#endif
1954	Log2(("Failed IO at %RGv %x size %d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1955	break;
1956	}
1957
1958	case SVM_EXIT_HLT:
1959	/** Check if external interrupts are pending; if so, don't switch back. */
1960	pCtx->rip++; /* skip hlt */
1961	if ( pCtx->eflags.Bits.u1IF
1962	&& VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
1963	goto ResumeExecution;
1964
1965	rc = VINF_EM_HALT;
1966	break;
1967
1968	case SVM_EXIT_RSM:
1969	case SVM_EXIT_INVLPGA:
1970	case SVM_EXIT_VMRUN:
1971	case SVM_EXIT_VMMCALL:
1972	case SVM_EXIT_VMLOAD:
1973	case SVM_EXIT_VMSAVE:
1974	case SVM_EXIT_STGI:
1975	case SVM_EXIT_CLGI:
1976	case SVM_EXIT_SKINIT:
1977	case SVM_EXIT_RDTSCP:
1978	{
1979	/* Unsupported instructions. */
1980	SVM_EVENT Event;
1981
1982	Event.au64[0] = 0;
1983	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1984	Event.n.u1Valid = 1;
1985	Event.n.u8Vector = X86_XCPT_UD;
1986
1987	Log(("Forced #UD trap at %RGv\n", (RTGCPTR)pCtx->rip));
1988	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1989
1990	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1991	goto ResumeExecution;
1992	}
1993
1994	/* Emulate in ring 3. */
1995	case SVM_EXIT_MSR:
1996	{
1997	uint32_t cbSize;
1998
1999	/* Note: the intel manual claims there's a REX version of RDMSR that's slightly different, so we play safe by completely disassembling the instruction. */
2000	Log(("SVM: %s\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr"));
2001	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
2002	if (rc == VINF_SUCCESS)
2003	{
2004	/* EIP has been updated already. */
2005
2006	/* Only resume if successful. */
2007	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
2008	goto ResumeExecution;
2009	}
2010	AssertMsg(rc == VERR_EM_INTERPRETER, ("EMU: %s failed with %Rrc\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr", rc));
2011	break;
2012	}
2013
2014	case SVM_EXIT_MONITOR:
2015	case SVM_EXIT_RDPMC:
2016	case SVM_EXIT_PAUSE:
2017	case SVM_EXIT_MWAIT_UNCOND:
2018	case SVM_EXIT_MWAIT_ARMED:
2019	case SVM_EXIT_TASK_SWITCH: /* can change CR3; emulate */
2020	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
2021	break;
2022
2023	case SVM_EXIT_SHUTDOWN:
2024	rc = VINF_EM_RESET; /* Triple fault equals a reset. */
2025	break;
2026
2027	case SVM_EXIT_IDTR_READ:
2028	case SVM_EXIT_GDTR_READ:
2029	case SVM_EXIT_LDTR_READ:
2030	case SVM_EXIT_TR_READ:
2031	case SVM_EXIT_IDTR_WRITE:
2032	case SVM_EXIT_GDTR_WRITE:
2033	case SVM_EXIT_LDTR_WRITE:
2034	case SVM_EXIT_TR_WRITE:
2035	case SVM_EXIT_CR0_SEL_WRITE:
2036	default:
2037	/* Unexpected exit codes. */
2038	rc = VERR_EM_INTERNAL_ERROR;
2039	AssertMsgFailed(("Unexpected exit code %x\n", exitCode)); /* Can't happen. */
2040	break;
2041	}
2042
2043	end:
2044
2045	/* Signal changes for the recompiler. */
2046	CPUMSetChangedFlags(pVM, CPUM_CHANGED_SYSENTER_MSR \| CPUM_CHANGED_LDTR \| CPUM_CHANGED_GDTR \| CPUM_CHANGED_IDTR \| CPUM_CHANGED_TR \| CPUM_CHANGED_HIDDEN_SEL_REGS);
2047
2048	/* If we executed vmrun and an external irq was pending, then we don't have to do a full sync the next time. */
2049	if (exitCode == SVM_EXIT_INTR)
2050	{
2051	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatPendingHostIrq);
2052	/* On the next entry we'll only sync the host context. */
2053	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_HOST_CONTEXT;
2054	}
2055	else
2056	{
2057	/* On the next entry we'll sync everything. */
2058	/** @todo we can do better than this */
2059	/* Not in the VINF_PGM_CHANGE_MODE though! */
2060	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_ALL;
2061	}
2062
2063	/* translate into a less severe return code */
2064	if (rc == VERR_EM_INTERPRETER)
2065	rc = VINF_EM_RAW_EMULATE_INSTR;
2066
2067	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
2068	return rc;
2069	}
2070
2071	/**
2072	* Enters the AMD-V session
2073	*
2074	* @returns VBox status code.
2075	* @param pVM The VM to operate on.
2076	* @param pVCpu The VM CPU to operate on.
2077	* @param pCpu CPU info struct
2078	*/
2079	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHWACCM_CPUINFO pCpu)
2080	{
2081	Assert(pVM->hwaccm.s.svm.fSupported);
2082
2083	LogFlow(("SVMR0Enter cpu%d last=%d asid=%d\n", pCpu->idCpu, pVCpu->hwaccm.s.idLastCpu, pVCpu->hwaccm.s.uCurrentASID));
2084	pVCpu->hwaccm.s.fResumeVM = false;
2085
2086	/* Force to reload LDTR, so we'll execute VMLoad to load additional guest state. */
2087	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_LDTR;
2088
2089	return VINF_SUCCESS;
2090	}
2091
2092
2093	/**
2094	* Leaves the AMD-V session
2095	*
2096	* @returns VBox status code.
2097	* @param pVM The VM to operate on.
2098	* @param pVCpu The VM CPU to operate on.
2099	* @param pCtx CPU context
2100	*/
2101	VMMR0DECL(int) SVMR0Leave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2102	{
2103	SVM_VMCB pVMCB = (SVM_VMCB )pVCpu->hwaccm.s.svm.pVMCB;
2104
2105	Assert(pVM->hwaccm.s.svm.fSupported);
2106
2107	/* Save the guest debug state if necessary. */
2108	if (CPUMIsGuestDebugStateActive(pVM))
2109	{
2110	CPUMR0SaveGuestDebugState(pVM, pVCpu, pCtx, false /* skip DR6 */);
2111
2112	/* Intercept all DRx reads and writes again. Changed later on. */
2113	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
2114	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
2115
2116	/* Resync the debug registers the next time. */
2117	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
2118	}
2119	else
2120	Assert(pVMCB->ctrl.u16InterceptRdDRx == 0xFFFF && pVMCB->ctrl.u16InterceptWrDRx == 0xFFFF);
2121
2122	return VINF_SUCCESS;
2123	}
2124
2125
2126	static int svmR0InterpretInvlPg(PVM pVM, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2127	{
2128	OP_PARAMVAL param1;
2129	RTGCPTR addr;
2130
2131	int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->param1, &param1, PARAM_SOURCE);
2132	if(RT_FAILURE(rc))
2133	return VERR_EM_INTERPRETER;
2134
2135	switch(param1.type)
2136	{
2137	case PARMTYPE_IMMEDIATE:
2138	case PARMTYPE_ADDRESS:
2139	if(!(param1.flags & (PARAM_VAL32\|PARAM_VAL64)))
2140	return VERR_EM_INTERPRETER;
2141	addr = param1.val.val64;
2142	break;
2143
2144	default:
2145	return VERR_EM_INTERPRETER;
2146	}
2147
2148	/** @todo is addr always a flat linear address or ds based
2149	* (in absence of segment override prefixes)????
2150	*/
2151	rc = PGMInvalidatePage(pVM, addr);
2152	if (RT_SUCCESS(rc))
2153	{
2154	/* Manually invalidate the page for the VM's TLB. */
2155	Log(("SVMInvlpgA %RGv ASID=%d\n", addr, uASID));
2156	SVMInvlpgA(addr, uASID);
2157	return VINF_SUCCESS;
2158	}
2159	Assert(rc == VERR_REM_FLUSHED_PAGES_OVERFLOW);
2160	return rc;
2161	}
2162
2163	/**
2164	* Interprets INVLPG
2165	*
2166	* @returns VBox status code.
2167	* @retval VINF_* Scheduling instructions.
2168	* @retval VERR_EM_INTERPRETER Something we can't cope with.
2169	* @retval VERR_* Fatal errors.
2170	*
2171	* @param pVM The VM handle.
2172	* @param pRegFrame The register frame.
2173	* @param ASID Tagged TLB id for the guest
2174	*
2175	* Updates the EIP if an instruction was executed successfully.
2176	*/
2177	static int SVMR0InterpretInvpg(PVM pVM, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2178	{
2179	/*
2180	* Only allow 32 & 64 bits code.
2181	*/
2182	DISCPUMODE enmMode = SELMGetCpuModeFromSelector(pVM, pRegFrame->eflags, pRegFrame->cs, &pRegFrame->csHid);
2183	if (enmMode != CPUMODE_16BIT)
2184	{
2185	RTGCPTR pbCode;
2186	int rc = SELMValidateAndConvertCSAddr(pVM, pRegFrame->eflags, pRegFrame->ss, pRegFrame->cs, &pRegFrame->csHid, (RTGCPTR)pRegFrame->rip, &pbCode);
2187	if (RT_SUCCESS(rc))
2188	{
2189	uint32_t cbOp;
2190	DISCPUSTATE Cpu;
2191
2192	Cpu.mode = enmMode;
2193	rc = EMInterpretDisasOneEx(pVM, pbCode, pRegFrame, &Cpu, &cbOp);
2194	Assert(RT_FAILURE(rc) \|\| Cpu.pCurInstr->opcode == OP_INVLPG);
2195	if (RT_SUCCESS(rc) && Cpu.pCurInstr->opcode == OP_INVLPG)
2196	{
2197	Assert(cbOp == Cpu.opsize);
2198	rc = svmR0InterpretInvlPg(pVM, &Cpu, pRegFrame, uASID);
2199	if (RT_SUCCESS(rc))
2200	{
2201	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
2202	}
2203	return rc;
2204	}
2205	}
2206	}
2207	return VERR_EM_INTERPRETER;
2208	}
2209
2210
2211	/**
2212	* Invalidates a guest page
2213	*
2214	* @returns VBox status code.
2215	* @param pVM The VM to operate on.
2216	* @param pVCpu The VM CPU to operate on.
2217	* @param GCVirt Page to invalidate
2218	*/
2219	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
2220	{
2221	bool fFlushPending = pVM->hwaccm.s.svm.fAlwaysFlushTLB \| pVCpu->hwaccm.s.fForceTLBFlush;
2222
2223	/* Skip it if a TLB flush is already pending. */
2224	if (!fFlushPending)
2225	{
2226	SVM_VMCB *pVMCB;
2227
2228	Log2(("SVMR0InvalidatePage %RGv\n", GCVirt));
2229	AssertReturn(pVM, VERR_INVALID_PARAMETER);
2230	Assert(pVM->hwaccm.s.svm.fSupported);
2231
2232	/* @todo SMP */
2233	pVMCB = (SVM_VMCB *)pVM->aCpus[0].hwaccm.s.svm.pVMCB;
2234	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
2235
2236	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageManual);
2237	SVMInvlpgA(GCVirt, pVMCB->ctrl.TLBCtrl.n.u32ASID);
2238	}
2239	return VINF_SUCCESS;
2240	}
2241
2242
2243	/**
2244	* Invalidates a guest page by physical address
2245	*
2246	* @returns VBox status code.
2247	* @param pVM The VM to operate on.
2248	* @param pVCpu The VM CPU to operate on.
2249	* @param GCPhys Page to invalidate
2250	*/
2251	VMMR0DECL(int) SVMR0InvalidatePhysPage(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys)
2252	{
2253	Assert(pVM->hwaccm.s.fNestedPaging);
2254	/* invlpga only invalidates TLB entries for guest virtual addresses; we have no choice but to force a TLB flush here. */
2255	pVCpu->hwaccm.s.fForceTLBFlush = true;
2256	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBInvlpga);
2257	return VINF_SUCCESS;
2258	}

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source: vbox/trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp@ 14299

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