HWSVMR0.cpp@ 19420

Last change on this file since 19420 was 19417, checked in by vboxsync, 15 years ago
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1	/* $Id: HWSVMR0.cpp 19417 2009-05-06 09:40:37Z 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, PVMCPU pVCpu, 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	#if defined(LOG_ENABLED) && !defined(DEBUG_bird)
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	#if defined(LOG_ENABLED) && !defined(DEBUG_bird)
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_WBINVD
330	\| SVM_CTRL2_INTERCEPT_MWAIT_UNCOND; /* don't execute mwait or else we'll idle inside the guest (host thinks the cpu load is high) */
331	;
332	Log(("pVMCB->ctrl.u32InterceptException = %x\n", pVMCB->ctrl.u32InterceptException));
333	Log(("pVMCB->ctrl.u32InterceptCtrl1 = %x\n", pVMCB->ctrl.u32InterceptCtrl1));
334	Log(("pVMCB->ctrl.u32InterceptCtrl2 = %x\n", pVMCB->ctrl.u32InterceptCtrl2));
335
336	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
337	pVMCB->ctrl.IntCtrl.n.u1VIrqMasking = 1;
338	/* Ignore the priority in the TPR; just deliver it when we tell it to. */
339	pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
340
341	/* Set IO and MSR bitmap addresses. */
342	pVMCB->ctrl.u64IOPMPhysAddr = pVM->hwaccm.s.svm.pIOBitmapPhys;
343	pVMCB->ctrl.u64MSRPMPhysAddr = pVM->hwaccm.s.svm.pMSRBitmapPhys;
344
345	/* No LBR virtualization. */
346	pVMCB->ctrl.u64LBRVirt = 0;
347
348	/** The ASID must start at 1; the host uses 0. */
349	pVMCB->ctrl.TLBCtrl.n.u32ASID = 1;
350
351	/** Setup the PAT msr (nested paging only) */
352	pVMCB->guest.u64GPAT = 0x0007040600070406ULL;
353	}
354	return rc;
355	}
356
357
358	/**
359	* Injects an event (trap or external interrupt)
360	*
361	* @param pVM The VM to operate on.
362	* @param pVMCB SVM control block
363	* @param pCtx CPU Context
364	* @param pIntInfo SVM interrupt info
365	*/
366	inline void SVMR0InjectEvent(PVM pVM, SVM_VMCB pVMCB, CPUMCTX pCtx, SVM_EVENT* pEvent)
367	{
368	#ifdef VBOX_STRICT
369	if (pEvent->n.u8Vector == 0xE)
370	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]));
371	else
372	if (pEvent->n.u8Vector < 0x20)
373	Log(("SVM: Inject int %d at %RGv error code=%08x\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip, pEvent->n.u32ErrorCode));
374	else
375	{
376	Log(("INJ-EI: %x at %RGv\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip));
377	Assert(!VMCPU_FF_ISSET(VMMGetCpu(pVM), VMCPU_FF_INHIBIT_INTERRUPTS));
378	Assert(pCtx->eflags.u32 & X86_EFL_IF);
379	}
380	#endif
381
382	/* Set event injection state. */
383	pVMCB->ctrl.EventInject.au64[0] = pEvent->au64[0];
384	}
385
386
387	/**
388	* Checks for pending guest interrupts and injects them
389	*
390	* @returns VBox status code.
391	* @param pVM The VM to operate on.
392	* @param pVCpu The VM CPU to operate on.
393	* @param pVMCB SVM control block
394	* @param pCtx CPU Context
395	*/
396	static int SVMR0CheckPendingInterrupt(PVM pVM, PVMCPU pVCpu, SVM_VMCB pVMCB, CPUMCTX pCtx)
397	{
398	int rc;
399
400	/* Dispatch any pending interrupts. (injected before, but a VM exit occurred prematurely) */
401	if (pVCpu->hwaccm.s.Event.fPending)
402	{
403	SVM_EVENT Event;
404
405	Log(("Reinjecting event %08x %08x at %RGv\n", pVCpu->hwaccm.s.Event.intInfo, pVCpu->hwaccm.s.Event.errCode, (RTGCPTR)pCtx->rip));
406	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntReinject);
407	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
408	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
409
410	pVCpu->hwaccm.s.Event.fPending = false;
411	return VINF_SUCCESS;
412	}
413
414	if (pVM->hwaccm.s.fInjectNMI)
415	{
416	SVM_EVENT Event;
417
418	Event.n.u8Vector = X86_XCPT_NMI;
419	Event.n.u1Valid = 1;
420	Event.n.u32ErrorCode = 0;
421	Event.n.u3Type = SVM_EVENT_NMI;
422
423	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
424	pVM->hwaccm.s.fInjectNMI = false;
425	return VINF_SUCCESS;
426	}
427
428	/* When external interrupts are pending, we should exit the VM when IF is set. */
429	if ( !TRPMHasTrap(pVCpu)
430	&& VMCPU_FF_ISPENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC\|VMCPU_FF_INTERRUPT_PIC)))
431	{
432	if ( !(pCtx->eflags.u32 & X86_EFL_IF)
433	\|\| VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
434	{
435	if (!pVMCB->ctrl.IntCtrl.n.u1VIrqValid)
436	{
437	if (!VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
438	LogFlow(("Enable irq window exit!\n"));
439	else
440	Log(("Pending interrupt blocked at %RGv by VM_FF_INHIBIT_INTERRUPTS -> irq window exit\n", (RTGCPTR)pCtx->rip));
441
442	/** @todo use virtual interrupt method to inject a pending irq; dispatched as soon as guest.IF is set. */
443	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
444	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 1;
445	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0; /* don't care */
446	}
447	}
448	else
449	{
450	uint8_t u8Interrupt;
451
452	rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
453	Log(("Dispatch interrupt: u8Interrupt=%x (%d) rc=%Rrc\n", u8Interrupt, u8Interrupt, rc));
454	if (RT_SUCCESS(rc))
455	{
456	rc = TRPMAssertTrap(pVCpu, u8Interrupt, TRPM_HARDWARE_INT);
457	AssertRC(rc);
458	}
459	else
460	{
461	/* Can only happen in rare cases where a pending interrupt is cleared behind our back */
462	Assert(!VMCPU_FF_ISPENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC\|VMCPU_FF_INTERRUPT_PIC)));
463	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchGuestIrq);
464	/* Just continue */
465	}
466	}
467	}
468
469	#ifdef VBOX_STRICT
470	if (TRPMHasTrap(pVCpu))
471	{
472	uint8_t u8Vector;
473	rc = TRPMQueryTrapAll(pVCpu, &u8Vector, 0, 0, 0);
474	AssertRC(rc);
475	}
476	#endif
477
478	if ( pCtx->eflags.u32 & X86_EFL_IF
479	&& (!VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
480	&& TRPMHasTrap(pVCpu)
481	)
482	{
483	uint8_t u8Vector;
484	int rc;
485	TRPMEVENT enmType;
486	SVM_EVENT Event;
487	RTGCUINT u32ErrorCode;
488
489	Event.au64[0] = 0;
490
491	/* If a new event is pending, then dispatch it now. */
492	rc = TRPMQueryTrapAll(pVCpu, &u8Vector, &enmType, &u32ErrorCode, 0);
493	AssertRC(rc);
494	Assert(pCtx->eflags.Bits.u1IF == 1 \|\| enmType == TRPM_TRAP);
495	Assert(enmType != TRPM_SOFTWARE_INT);
496
497	/* Clear the pending trap. */
498	rc = TRPMResetTrap(pVCpu);
499	AssertRC(rc);
500
501	Event.n.u8Vector = u8Vector;
502	Event.n.u1Valid = 1;
503	Event.n.u32ErrorCode = u32ErrorCode;
504
505	if (enmType == TRPM_TRAP)
506	{
507	switch (u8Vector) {
508	case 8:
509	case 10:
510	case 11:
511	case 12:
512	case 13:
513	case 14:
514	case 17:
515	/* Valid error codes. */
516	Event.n.u1ErrorCodeValid = 1;
517	break;
518	default:
519	break;
520	}
521	if (u8Vector == X86_XCPT_NMI)
522	Event.n.u3Type = SVM_EVENT_NMI;
523	else
524	Event.n.u3Type = SVM_EVENT_EXCEPTION;
525	}
526	else
527	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
528
529	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntInject);
530	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
531	} /* if (interrupts can be dispatched) */
532
533	return VINF_SUCCESS;
534	}
535
536	/**
537	* Save the host state
538	*
539	* @returns VBox status code.
540	* @param pVM The VM to operate on.
541	* @param pVCpu The VM CPU to operate on.
542	*/
543	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
544	{
545	NOREF(pVM);
546	NOREF(pVCpu);
547	/* Nothing to do here. */
548	return VINF_SUCCESS;
549	}
550
551	/**
552	* Loads the guest state
553	*
554	* NOTE: Don't do anything here that can cause a jump back to ring 3!!!!!
555	*
556	* @returns VBox status code.
557	* @param pVM The VM to operate on.
558	* @param pVCpu The VM CPU to operate on.
559	* @param pCtx Guest context
560	*/
561	VMMR0DECL(int) SVMR0LoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
562	{
563	RTGCUINTPTR val;
564	SVM_VMCB *pVMCB;
565
566	if (pVM == NULL)
567	return VERR_INVALID_PARAMETER;
568
569	/* Setup AMD SVM. */
570	Assert(pVM->hwaccm.s.svm.fSupported);
571
572	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
573	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
574
575	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
576	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SEGMENT_REGS)
577	{
578	SVM_WRITE_SELREG(CS, cs);
579	SVM_WRITE_SELREG(SS, ss);
580	SVM_WRITE_SELREG(DS, ds);
581	SVM_WRITE_SELREG(ES, es);
582	SVM_WRITE_SELREG(FS, fs);
583	SVM_WRITE_SELREG(GS, gs);
584	}
585
586	/* Guest CPU context: LDTR. */
587	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_LDTR)
588	{
589	SVM_WRITE_SELREG(LDTR, ldtr);
590	}
591
592	/* Guest CPU context: TR. */
593	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_TR)
594	{
595	SVM_WRITE_SELREG(TR, tr);
596	}
597
598	/* Guest CPU context: GDTR. */
599	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_GDTR)
600	{
601	pVMCB->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
602	pVMCB->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
603	}
604
605	/* Guest CPU context: IDTR. */
606	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_IDTR)
607	{
608	pVMCB->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
609	pVMCB->guest.IDTR.u64Base = pCtx->idtr.pIdt;
610	}
611
612	/*
613	* Sysenter MSRs (unconditional)
614	*/
615	pVMCB->guest.u64SysEnterCS = pCtx->SysEnter.cs;
616	pVMCB->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
617	pVMCB->guest.u64SysEnterESP = pCtx->SysEnter.esp;
618
619	/* Control registers */
620	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR0)
621	{
622	val = pCtx->cr0;
623	if (!CPUMIsGuestFPUStateActive(pVCpu))
624	{
625	/* Always use #NM exceptions to load the FPU/XMM state on demand. */
626	val \|= X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
627	}
628	else
629	{
630	/** @todo check if we support the old style mess correctly. */
631	if (!(val & X86_CR0_NE))
632	{
633	Log(("Forcing X86_CR0_NE!!!\n"));
634
635	/* Also catch floating point exceptions as we need to report them to the guest in a different way. */
636	if (!pVCpu->hwaccm.s.fFPUOldStyleOverride)
637	{
638	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_MF);
639	pVCpu->hwaccm.s.fFPUOldStyleOverride = true;
640	}
641	}
642	val \|= X86_CR0_NE; /* always turn on the native mechanism to report FPU errors (old style uses interrupts) */
643	}
644	/* Always enable caching. */
645	val &= ~(X86_CR0_CD\|X86_CR0_NW);
646
647	/* Note: WP is not relevant in nested paging mode as we catch accesses on the (guest) physical level. */
648	/* Note: In nested paging mode the guest is allowed to run with paging disabled; the guest physical to host physical translation will remain active. */
649	if (!pVM->hwaccm.s.fNestedPaging)
650	{
651	val \|= X86_CR0_PG; /* Paging is always enabled; even when the guest is running in real mode or PE without paging. */
652	val \|= X86_CR0_WP; /* Must set this as we rely on protect various pages and supervisor writes must be caught. */
653	}
654	pVMCB->guest.u64CR0 = val;
655	}
656	/* CR2 as well */
657	pVMCB->guest.u64CR2 = pCtx->cr2;
658
659	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR3)
660	{
661	/* Save our shadow CR3 register. */
662	if (pVM->hwaccm.s.fNestedPaging)
663	{
664	PGMMODE enmShwPagingMode;
665
666	#if HC_ARCH_BITS == 32
667	if (CPUMIsGuestInLongModeEx(pCtx))
668	enmShwPagingMode = PGMMODE_AMD64_NX;
669	else
670	#endif
671	enmShwPagingMode = PGMGetHostMode(pVM);
672
673	pVMCB->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
674	Assert(pVMCB->ctrl.u64NestedPagingCR3);
675	pVMCB->guest.u64CR3 = pCtx->cr3;
676	}
677	else
678	{
679	pVMCB->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
680	Assert(pVMCB->guest.u64CR3 \|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL));
681	}
682	}
683
684	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR4)
685	{
686	val = pCtx->cr4;
687	if (!pVM->hwaccm.s.fNestedPaging)
688	{
689	switch(pVCpu->hwaccm.s.enmShadowMode)
690	{
691	case PGMMODE_REAL:
692	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
693	AssertFailed();
694	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
695
696	case PGMMODE_32_BIT: /* 32-bit paging. */
697	val &= ~X86_CR4_PAE;
698	break;
699
700	case PGMMODE_PAE: /* PAE paging. */
701	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
702	/** @todo use normal 32 bits paging */
703	val \|= X86_CR4_PAE;
704	break;
705
706	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
707	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
708	#ifdef VBOX_ENABLE_64_BITS_GUESTS
709	break;
710	#else
711	AssertFailed();
712	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
713	#endif
714
715	default: /* shut up gcc */
716	AssertFailed();
717	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
718	}
719	}
720	pVMCB->guest.u64CR4 = val;
721	}
722
723	/* Debug registers. */
724	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_DEBUG)
725	{
726	pCtx->dr[6] \|= X86_DR6_INIT_VAL; /* set all reserved bits to 1. */
727	pCtx->dr[6] &= ~RT_BIT(12); /* must be zero. */
728
729	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
730	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
731	pCtx->dr[7] \|= 0x400; /* must be one */
732
733	pVMCB->guest.u64DR7 = pCtx->dr[7];
734	pVMCB->guest.u64DR6 = pCtx->dr[6];
735
736	/* Sync the debug state now if any breakpoint is armed. */
737	if ( (pCtx->dr[7] & (X86_DR7_ENABLED_MASK\|X86_DR7_GD))
738	&& !CPUMIsGuestDebugStateActive(pVCpu)
739	&& !DBGFIsStepping(pVCpu))
740	{
741	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxArmed);
742
743	/* Disable drx move intercepts. */
744	pVMCB->ctrl.u16InterceptRdDRx = 0;
745	pVMCB->ctrl.u16InterceptWrDRx = 0;
746
747	/* Save the host and load the guest debug state. */
748	int rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
749	AssertRC(rc);
750	}
751	}
752
753	/* EIP, ESP and EFLAGS */
754	pVMCB->guest.u64RIP = pCtx->rip;
755	pVMCB->guest.u64RSP = pCtx->rsp;
756	pVMCB->guest.u64RFlags = pCtx->eflags.u32;
757
758	/* Set CPL */
759	pVMCB->guest.u8CPL = pCtx->csHid.Attr.n.u2Dpl;
760
761	/* RAX/EAX too, as VMRUN uses RAX as an implicit parameter. */
762	pVMCB->guest.u64RAX = pCtx->rax;
763
764	/* vmrun will fail without MSR_K6_EFER_SVME. */
765	pVMCB->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
766
767	/* 64 bits guest mode? */
768	if (pCtx->msrEFER & MSR_K6_EFER_LMA)
769	{
770	#if !defined(VBOX_ENABLE_64_BITS_GUESTS)
771	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
772	#elif HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
773	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
774	#else
775	# ifdef VBOX_WITH_HYBRID_32BIT_KERNEL
776	if (!pVM->hwaccm.s.fAllow64BitGuests)
777	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
778	# endif
779	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMRun64;
780	#endif
781	/* Unconditionally update these as wrmsr might have changed them. (HWACCM_CHANGED_GUEST_SEGMENT_REGS will not be set) */
782	pVMCB->guest.FS.u64Base = pCtx->fsHid.u64Base;
783	pVMCB->guest.GS.u64Base = pCtx->gsHid.u64Base;
784	}
785	else
786	{
787	/* Filter out the MSR_K6_LME bit or else AMD-V expects amd64 shadow paging. */
788	pVMCB->guest.u64EFER &= ~MSR_K6_EFER_LME;
789
790	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMRun;
791	}
792
793	/* TSC offset. */
794	if (TMCpuTickCanUseRealTSC(pVCpu, &pVMCB->ctrl.u64TSCOffset))
795	{
796	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
797	pVMCB->ctrl.u32InterceptCtrl2 &= ~SVM_CTRL2_INTERCEPT_RDTSCP;
798	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCOffset);
799	}
800	else
801	{
802	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
803	pVMCB->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
804	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCIntercept);
805	}
806
807	/* Sync the various msrs for 64 bits mode. */
808	pVMCB->guest.u64STAR = pCtx->msrSTAR; /* legacy syscall eip, cs & ss */
809	pVMCB->guest.u64LSTAR = pCtx->msrLSTAR; /* 64 bits mode syscall rip */
810	pVMCB->guest.u64CSTAR = pCtx->msrCSTAR; /* compatibility mode syscall rip */
811	pVMCB->guest.u64SFMASK = pCtx->msrSFMASK; /* syscall flag mask */
812	pVMCB->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE; /* swapgs exchange value */
813
814	#ifdef DEBUG
815	/* Intercept X86_XCPT_DB if stepping is enabled */
816	if (DBGFIsStepping(pVCpu))
817	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_DB);
818	else
819	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_DB);
820	#endif
821
822	/* Done. */
823	pVCpu->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_ALL_GUEST;
824
825	return VINF_SUCCESS;
826	}
827
828
829	/**
830	* Runs guest code in an AMD-V VM.
831	*
832	* @returns VBox status code.
833	* @param pVM The VM to operate on.
834	* @param pVCpu The VM CPU to operate on.
835	* @param pCtx Guest context
836	*/
837	VMMR0DECL(int) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
838	{
839	int rc = VINF_SUCCESS;
840	uint64_t exitCode = (uint64_t)SVM_EXIT_INVALID;
841	SVM_VMCB *pVMCB;
842	bool fSyncTPR = false;
843	unsigned cResume = 0;
844	uint8_t u8LastVTPR;
845	PHWACCM_CPUINFO pCpu = 0;
846	#ifdef VBOX_STRICT
847	RTCPUID idCpuCheck;
848	#endif
849
850	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatEntry, x);
851
852	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
853	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
854
855	/* We can jump to this point to resume execution after determining that a VM-exit is innocent.
856	*/
857	ResumeExecution:
858	Assert(!HWACCMR0SuspendPending());
859
860	/* Safety precaution; looping for too long here can have a very bad effect on the host */
861	if (++cResume > HWACCM_MAX_RESUME_LOOPS)
862	{
863	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitMaxResume);
864	rc = VINF_EM_RAW_INTERRUPT;
865	goto end;
866	}
867
868	/* Check for irq inhibition due to instruction fusing (sti, mov ss). */
869	if (VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
870	{
871	Log(("VM_FF_INHIBIT_INTERRUPTS at %RGv successor %RGv\n", (RTGCPTR)pCtx->rip, EMGetInhibitInterruptsPC(pVCpu)));
872	if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
873	{
874	/* Note: we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here.
875	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
876	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
877	* break the guest. Sounds very unlikely, but such timing sensitive problems are not as rare as you might think.
878	*/
879	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
880	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
881	pVMCB->ctrl.u64IntShadow = 0;
882	}
883	}
884	else
885	{
886	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
887	pVMCB->ctrl.u64IntShadow = 0;
888	}
889
890	/* Check for pending actions that force us to go back to ring 3. */
891	#ifdef DEBUG
892	/* Intercept X86_XCPT_DB if stepping is enabled */
893	if (!DBGFIsStepping(pVCpu))
894	#endif
895	{
896	if ( VM_FF_ISPENDING(pVM, VM_FF_HWACCM_TO_R3_MASK)
897	\|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_HWACCM_TO_R3_MASK))
898	{
899	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
900	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchToR3);
901	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
902	rc = RT_UNLIKELY(VM_FF_ISPENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
903	goto end;
904	}
905	}
906
907	/* Pending request packets might contain actions that need immediate attention, such as pending hardware interrupts. */
908	if ( VM_FF_ISPENDING(pVM, VM_FF_REQUEST)
909	\|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_REQUEST))
910	{
911	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
912	rc = VINF_EM_PENDING_REQUEST;
913	goto end;
914	}
915
916	/* When external interrupts are pending, we should exit the VM when IF is set. */
917	/* Note! After VM_FF_INHIBIT_INTERRUPTS check!!! */
918	rc = SVMR0CheckPendingInterrupt(pVM, pVCpu, pVMCB, pCtx);
919	if (RT_FAILURE(rc))
920	{
921	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
922	goto end;
923	}
924
925	/* TPR caching using CR8 is only available in 64 bits mode */
926	/* Note the 32 bits exception for AMD (X86_CPUID_AMD_FEATURE_ECX_CR8L), but that appears missing in Intel CPUs */
927	/* Note: we can't do this in LoadGuestState as PDMApicGetTPR can jump back to ring 3 (lock)!!!!!!!! */
928	if (pCtx->msrEFER & MSR_K6_EFER_LMA)
929	{
930	bool fPending;
931
932	/* TPR caching in CR8 */
933	int rc = PDMApicGetTPR(pVM, &u8LastVTPR, &fPending);
934	AssertRC(rc);
935	pVMCB->ctrl.IntCtrl.n.u8VTPR = u8LastVTPR;
936
937	if (fPending)
938	{
939	/* A TPR change could activate a pending interrupt, so catch cr8 writes. */
940	pVMCB->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
941	}
942	else
943	/* No interrupts are pending, so we don't need to be explicitely notified.
944	* There are enough world switches for detecting pending interrupts.
945	*/
946	pVMCB->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
947
948	fSyncTPR = !fPending;
949	}
950
951	/* All done! Let's start VM execution. */
952	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatInGC, x);
953
954	/* Enable nested paging if necessary (disabled each time after #VMEXIT). */
955	pVMCB->ctrl.NestedPaging.n.u1NestedPaging = pVM->hwaccm.s.fNestedPaging;
956
957	#ifdef LOG_ENABLED
958	pCpu = HWACCMR0GetCurrentCpu();
959	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
960	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
961	{
962	if (pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu)
963	Log(("Force TLB flush due to rescheduling to a different cpu (%d vs %d)\n", pVCpu->hwaccm.s.idLastCpu, pCpu->idCpu));
964	else
965	Log(("Force TLB flush due to changed TLB flush count (%x vs %x)\n", pVCpu->hwaccm.s.cTLBFlushes, pCpu->cTLBFlushes));
966	}
967	if (pCpu->fFlushTLB)
968	Log(("Force TLB flush: first time cpu %d is used -> flush\n", pCpu->idCpu));
969	#endif
970
971	/*
972	* NOTE: DO NOT DO ANYTHING AFTER THIS POINT THAT MIGHT JUMP BACK TO RING 3!
973	* (until the actual world switch)
974	*/
975
976	#ifdef VBOX_STRICT
977	idCpuCheck = RTMpCpuId();
978	#endif
979
980	/* Load the guest state; must be here as it sets up the shadow cr0 for lazy fpu syncing! */
981	rc = SVMR0LoadGuestState(pVM, pVCpu, pCtx);
982	if (rc != VINF_SUCCESS)
983	{
984	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
985	goto end;
986	}
987
988	pCpu = HWACCMR0GetCurrentCpu();
989	/* Force a TLB flush for the first world switch if the current cpu differs from the one we ran on last. */
990	/* Note that this can happen both for start and resume due to long jumps back to ring 3. */
991	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
992	/* 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. */
993	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
994	{
995	/* Force a TLB flush on VM entry. */
996	pVCpu->hwaccm.s.fForceTLBFlush = true;
997	}
998	else
999	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
1000
1001	pVCpu->hwaccm.s.idLastCpu = pCpu->idCpu;
1002
1003	/* 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). */
1004	if ( pVCpu->hwaccm.s.fForceTLBFlush
1005	&& !pVM->hwaccm.s.svm.fAlwaysFlushTLB)
1006	{
1007	if ( ++pCpu->uCurrentASID >= pVM->hwaccm.s.uMaxASID
1008	\|\| pCpu->fFlushTLB)
1009	{
1010	pCpu->fFlushTLB = false;
1011	pCpu->uCurrentASID = 1; /* start at 1; host uses 0 */
1012	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = 1; /* wrap around; flush TLB */
1013	pCpu->cTLBFlushes++;
1014	}
1015	else
1016	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushASID);
1017
1018	pVCpu->hwaccm.s.cTLBFlushes = pCpu->cTLBFlushes;
1019	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID;
1020	}
1021	else
1022	{
1023	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
1024
1025	/* We never increase uCurrentASID in the fAlwaysFlushTLB (erratum 170) case. */
1026	if (!pCpu->uCurrentASID \|\| !pVCpu->hwaccm.s.uCurrentASID)
1027	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID = 1;
1028
1029	Assert(!pVM->hwaccm.s.svm.fAlwaysFlushTLB \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1030	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = pVCpu->hwaccm.s.fForceTLBFlush;
1031
1032	if ( !pVM->hwaccm.s.svm.fAlwaysFlushTLB
1033	&& VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TLB_SHOOTDOWN))
1034	{
1035	/* Deal with pending TLB shootdown actions which were queued when we were not executing code. */
1036	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTlbShootdown);
1037	for (unsigned i=0;i<pVCpu->hwaccm.s.cTlbShootdownPages;i++)
1038	SVMR0InvlpgA(pVCpu->hwaccm.s.aTlbShootdownPages[i], pVMCB->ctrl.TLBCtrl.n.u32ASID);
1039	}
1040	}
1041	pVCpu->hwaccm.s.cTlbShootdownPages = 0;
1042	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TLB_SHOOTDOWN);
1043
1044	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));
1045	AssertMsg(pCpu->uCurrentASID >= 1 && pCpu->uCurrentASID < pVM->hwaccm.s.uMaxASID, ("cpu%d uCurrentASID = %x\n", pCpu->idCpu, pCpu->uCurrentASID));
1046	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));
1047	pVMCB->ctrl.TLBCtrl.n.u32ASID = pVCpu->hwaccm.s.uCurrentASID;
1048
1049	#ifdef VBOX_WITH_STATISTICS
1050	if (pVMCB->ctrl.TLBCtrl.n.u1TLBFlush)
1051	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBWorldSwitch);
1052	else
1053	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatNoFlushTLBWorldSwitch);
1054	#endif
1055
1056	/* In case we execute a goto ResumeExecution later on. */
1057	pVCpu->hwaccm.s.fResumeVM = true;
1058	pVCpu->hwaccm.s.fForceTLBFlush = pVM->hwaccm.s.svm.fAlwaysFlushTLB;
1059
1060	Assert(sizeof(pVCpu->hwaccm.s.svm.pVMCBPhys) == 8);
1061	Assert(pVMCB->ctrl.IntCtrl.n.u1VIrqMasking);
1062	Assert(pVMCB->ctrl.u64IOPMPhysAddr == pVM->hwaccm.s.svm.pIOBitmapPhys);
1063	Assert(pVMCB->ctrl.u64MSRPMPhysAddr == pVM->hwaccm.s.svm.pMSRBitmapPhys);
1064	Assert(pVMCB->ctrl.u64LBRVirt == 0);
1065
1066	#ifdef VBOX_STRICT
1067	Assert(idCpuCheck == RTMpCpuId());
1068	#endif
1069	TMNotifyStartOfExecution(pVCpu);
1070	pVCpu->hwaccm.s.svm.pfnVMRun(pVM->hwaccm.s.svm.pVMCBHostPhys, pVCpu->hwaccm.s.svm.pVMCBPhys, pCtx, pVM, pVCpu);
1071	TMNotifyEndOfExecution(pVCpu);
1072	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatInGC, x);
1073
1074	/*
1075	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1076	* 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
1077	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1078	*/
1079
1080	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatExit1, x);
1081
1082	/* Reason for the VM exit */
1083	exitCode = pVMCB->ctrl.u64ExitCode;
1084
1085	if (exitCode == (uint64_t)SVM_EXIT_INVALID) /* Invalid guest state. */
1086	{
1087	HWACCMDumpRegs(pVM, pVCpu, pCtx);
1088	#ifdef DEBUG
1089	Log(("ctrl.u16InterceptRdCRx %x\n", pVMCB->ctrl.u16InterceptRdCRx));
1090	Log(("ctrl.u16InterceptWrCRx %x\n", pVMCB->ctrl.u16InterceptWrCRx));
1091	Log(("ctrl.u16InterceptRdDRx %x\n", pVMCB->ctrl.u16InterceptRdDRx));
1092	Log(("ctrl.u16InterceptWrDRx %x\n", pVMCB->ctrl.u16InterceptWrDRx));
1093	Log(("ctrl.u32InterceptException %x\n", pVMCB->ctrl.u32InterceptException));
1094	Log(("ctrl.u32InterceptCtrl1 %x\n", pVMCB->ctrl.u32InterceptCtrl1));
1095	Log(("ctrl.u32InterceptCtrl2 %x\n", pVMCB->ctrl.u32InterceptCtrl2));
1096	Log(("ctrl.u64IOPMPhysAddr %RX64\n", pVMCB->ctrl.u64IOPMPhysAddr));
1097	Log(("ctrl.u64MSRPMPhysAddr %RX64\n", pVMCB->ctrl.u64MSRPMPhysAddr));
1098	Log(("ctrl.u64TSCOffset %RX64\n", pVMCB->ctrl.u64TSCOffset));
1099
1100	Log(("ctrl.TLBCtrl.u32ASID %x\n", pVMCB->ctrl.TLBCtrl.n.u32ASID));
1101	Log(("ctrl.TLBCtrl.u1TLBFlush %x\n", pVMCB->ctrl.TLBCtrl.n.u1TLBFlush));
1102	Log(("ctrl.TLBCtrl.u7Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u7Reserved));
1103	Log(("ctrl.TLBCtrl.u24Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u24Reserved));
1104
1105	Log(("ctrl.IntCtrl.u8VTPR %x\n", pVMCB->ctrl.IntCtrl.n.u8VTPR));
1106	Log(("ctrl.IntCtrl.u1VIrqValid %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqValid));
1107	Log(("ctrl.IntCtrl.u7Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved));
1108	Log(("ctrl.IntCtrl.u4VIrqPriority %x\n", pVMCB->ctrl.IntCtrl.n.u4VIrqPriority));
1109	Log(("ctrl.IntCtrl.u1IgnoreTPR %x\n", pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR));
1110	Log(("ctrl.IntCtrl.u3Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u3Reserved));
1111	Log(("ctrl.IntCtrl.u1VIrqMasking %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqMasking));
1112	Log(("ctrl.IntCtrl.u7Reserved2 %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved2));
1113	Log(("ctrl.IntCtrl.u8VIrqVector %x\n", pVMCB->ctrl.IntCtrl.n.u8VIrqVector));
1114	Log(("ctrl.IntCtrl.u24Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u24Reserved));
1115
1116	Log(("ctrl.u64IntShadow %RX64\n", pVMCB->ctrl.u64IntShadow));
1117	Log(("ctrl.u64ExitCode %RX64\n", pVMCB->ctrl.u64ExitCode));
1118	Log(("ctrl.u64ExitInfo1 %RX64\n", pVMCB->ctrl.u64ExitInfo1));
1119	Log(("ctrl.u64ExitInfo2 %RX64\n", pVMCB->ctrl.u64ExitInfo2));
1120	Log(("ctrl.ExitIntInfo.u8Vector %x\n", pVMCB->ctrl.ExitIntInfo.n.u8Vector));
1121	Log(("ctrl.ExitIntInfo.u3Type %x\n", pVMCB->ctrl.ExitIntInfo.n.u3Type));
1122	Log(("ctrl.ExitIntInfo.u1ErrorCodeValid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
1123	Log(("ctrl.ExitIntInfo.u19Reserved %x\n", pVMCB->ctrl.ExitIntInfo.n.u19Reserved));
1124	Log(("ctrl.ExitIntInfo.u1Valid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1Valid));
1125	Log(("ctrl.ExitIntInfo.u32ErrorCode %x\n", pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode));
1126	Log(("ctrl.NestedPaging %RX64\n", pVMCB->ctrl.NestedPaging.au64));
1127	Log(("ctrl.EventInject.u8Vector %x\n", pVMCB->ctrl.EventInject.n.u8Vector));
1128	Log(("ctrl.EventInject.u3Type %x\n", pVMCB->ctrl.EventInject.n.u3Type));
1129	Log(("ctrl.EventInject.u1ErrorCodeValid %x\n", pVMCB->ctrl.EventInject.n.u1ErrorCodeValid));
1130	Log(("ctrl.EventInject.u19Reserved %x\n", pVMCB->ctrl.EventInject.n.u19Reserved));
1131	Log(("ctrl.EventInject.u1Valid %x\n", pVMCB->ctrl.EventInject.n.u1Valid));
1132	Log(("ctrl.EventInject.u32ErrorCode %x\n", pVMCB->ctrl.EventInject.n.u32ErrorCode));
1133
1134	Log(("ctrl.u64NestedPagingCR3 %RX64\n", pVMCB->ctrl.u64NestedPagingCR3));
1135	Log(("ctrl.u64LBRVirt %RX64\n", pVMCB->ctrl.u64LBRVirt));
1136
1137	Log(("guest.CS.u16Sel %04X\n", pVMCB->guest.CS.u16Sel));
1138	Log(("guest.CS.u16Attr %04X\n", pVMCB->guest.CS.u16Attr));
1139	Log(("guest.CS.u32Limit %X\n", pVMCB->guest.CS.u32Limit));
1140	Log(("guest.CS.u64Base %RX64\n", pVMCB->guest.CS.u64Base));
1141	Log(("guest.DS.u16Sel %04X\n", pVMCB->guest.DS.u16Sel));
1142	Log(("guest.DS.u16Attr %04X\n", pVMCB->guest.DS.u16Attr));
1143	Log(("guest.DS.u32Limit %X\n", pVMCB->guest.DS.u32Limit));
1144	Log(("guest.DS.u64Base %RX64\n", pVMCB->guest.DS.u64Base));
1145	Log(("guest.ES.u16Sel %04X\n", pVMCB->guest.ES.u16Sel));
1146	Log(("guest.ES.u16Attr %04X\n", pVMCB->guest.ES.u16Attr));
1147	Log(("guest.ES.u32Limit %X\n", pVMCB->guest.ES.u32Limit));
1148	Log(("guest.ES.u64Base %RX64\n", pVMCB->guest.ES.u64Base));
1149	Log(("guest.FS.u16Sel %04X\n", pVMCB->guest.FS.u16Sel));
1150	Log(("guest.FS.u16Attr %04X\n", pVMCB->guest.FS.u16Attr));
1151	Log(("guest.FS.u32Limit %X\n", pVMCB->guest.FS.u32Limit));
1152	Log(("guest.FS.u64Base %RX64\n", pVMCB->guest.FS.u64Base));
1153	Log(("guest.GS.u16Sel %04X\n", pVMCB->guest.GS.u16Sel));
1154	Log(("guest.GS.u16Attr %04X\n", pVMCB->guest.GS.u16Attr));
1155	Log(("guest.GS.u32Limit %X\n", pVMCB->guest.GS.u32Limit));
1156	Log(("guest.GS.u64Base %RX64\n", pVMCB->guest.GS.u64Base));
1157
1158	Log(("guest.GDTR.u32Limit %X\n", pVMCB->guest.GDTR.u32Limit));
1159	Log(("guest.GDTR.u64Base %RX64\n", pVMCB->guest.GDTR.u64Base));
1160
1161	Log(("guest.LDTR.u16Sel %04X\n", pVMCB->guest.LDTR.u16Sel));
1162	Log(("guest.LDTR.u16Attr %04X\n", pVMCB->guest.LDTR.u16Attr));
1163	Log(("guest.LDTR.u32Limit %X\n", pVMCB->guest.LDTR.u32Limit));
1164	Log(("guest.LDTR.u64Base %RX64\n", pVMCB->guest.LDTR.u64Base));
1165
1166	Log(("guest.IDTR.u32Limit %X\n", pVMCB->guest.IDTR.u32Limit));
1167	Log(("guest.IDTR.u64Base %RX64\n", pVMCB->guest.IDTR.u64Base));
1168
1169	Log(("guest.TR.u16Sel %04X\n", pVMCB->guest.TR.u16Sel));
1170	Log(("guest.TR.u16Attr %04X\n", pVMCB->guest.TR.u16Attr));
1171	Log(("guest.TR.u32Limit %X\n", pVMCB->guest.TR.u32Limit));
1172	Log(("guest.TR.u64Base %RX64\n", pVMCB->guest.TR.u64Base));
1173
1174	Log(("guest.u8CPL %X\n", pVMCB->guest.u8CPL));
1175	Log(("guest.u64CR0 %RX64\n", pVMCB->guest.u64CR0));
1176	Log(("guest.u64CR2 %RX64\n", pVMCB->guest.u64CR2));
1177	Log(("guest.u64CR3 %RX64\n", pVMCB->guest.u64CR3));
1178	Log(("guest.u64CR4 %RX64\n", pVMCB->guest.u64CR4));
1179	Log(("guest.u64DR6 %RX64\n", pVMCB->guest.u64DR6));
1180	Log(("guest.u64DR7 %RX64\n", pVMCB->guest.u64DR7));
1181
1182	Log(("guest.u64RIP %RX64\n", pVMCB->guest.u64RIP));
1183	Log(("guest.u64RSP %RX64\n", pVMCB->guest.u64RSP));
1184	Log(("guest.u64RAX %RX64\n", pVMCB->guest.u64RAX));
1185	Log(("guest.u64RFlags %RX64\n", pVMCB->guest.u64RFlags));
1186
1187	Log(("guest.u64SysEnterCS %RX64\n", pVMCB->guest.u64SysEnterCS));
1188	Log(("guest.u64SysEnterEIP %RX64\n", pVMCB->guest.u64SysEnterEIP));
1189	Log(("guest.u64SysEnterESP %RX64\n", pVMCB->guest.u64SysEnterESP));
1190
1191	Log(("guest.u64EFER %RX64\n", pVMCB->guest.u64EFER));
1192	Log(("guest.u64STAR %RX64\n", pVMCB->guest.u64STAR));
1193	Log(("guest.u64LSTAR %RX64\n", pVMCB->guest.u64LSTAR));
1194	Log(("guest.u64CSTAR %RX64\n", pVMCB->guest.u64CSTAR));
1195	Log(("guest.u64SFMASK %RX64\n", pVMCB->guest.u64SFMASK));
1196	Log(("guest.u64KernelGSBase %RX64\n", pVMCB->guest.u64KernelGSBase));
1197	Log(("guest.u64GPAT %RX64\n", pVMCB->guest.u64GPAT));
1198	Log(("guest.u64DBGCTL %RX64\n", pVMCB->guest.u64DBGCTL));
1199	Log(("guest.u64BR_FROM %RX64\n", pVMCB->guest.u64BR_FROM));
1200	Log(("guest.u64BR_TO %RX64\n", pVMCB->guest.u64BR_TO));
1201	Log(("guest.u64LASTEXCPFROM %RX64\n", pVMCB->guest.u64LASTEXCPFROM));
1202	Log(("guest.u64LASTEXCPTO %RX64\n", pVMCB->guest.u64LASTEXCPTO));
1203
1204	#endif
1205	rc = VERR_SVM_UNABLE_TO_START_VM;
1206	goto end;
1207	}
1208
1209	/* Let's first sync back eip, esp, and eflags. */
1210	pCtx->rip = pVMCB->guest.u64RIP;
1211	pCtx->rsp = pVMCB->guest.u64RSP;
1212	pCtx->eflags.u32 = pVMCB->guest.u64RFlags;
1213	/* eax is saved/restore across the vmrun instruction */
1214	pCtx->rax = pVMCB->guest.u64RAX;
1215
1216	pCtx->msrKERNELGSBASE = pVMCB->guest.u64KernelGSBase; /* swapgs exchange value */
1217
1218	/* Can be updated behind our back in the nested paging case. */
1219	pCtx->cr2 = pVMCB->guest.u64CR2;
1220
1221	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
1222	SVM_READ_SELREG(SS, ss);
1223	SVM_READ_SELREG(CS, cs);
1224	SVM_READ_SELREG(DS, ds);
1225	SVM_READ_SELREG(ES, es);
1226	SVM_READ_SELREG(FS, fs);
1227	SVM_READ_SELREG(GS, gs);
1228
1229	/*
1230	* System MSRs
1231	*/
1232	pCtx->SysEnter.cs = pVMCB->guest.u64SysEnterCS;
1233	pCtx->SysEnter.eip = pVMCB->guest.u64SysEnterEIP;
1234	pCtx->SysEnter.esp = pVMCB->guest.u64SysEnterESP;
1235
1236	/* Remaining guest CPU context: TR, IDTR, GDTR, LDTR; must sync everything otherwise we can get out of sync when jumping to ring 3. */
1237	SVM_READ_SELREG(LDTR, ldtr);
1238	SVM_READ_SELREG(TR, tr);
1239
1240	pCtx->gdtr.cbGdt = pVMCB->guest.GDTR.u32Limit;
1241	pCtx->gdtr.pGdt = pVMCB->guest.GDTR.u64Base;
1242
1243	pCtx->idtr.cbIdt = pVMCB->guest.IDTR.u32Limit;
1244	pCtx->idtr.pIdt = pVMCB->guest.IDTR.u64Base;
1245
1246	/* Note: no reason to sync back the CRx and DRx registers. They can't be changed by the guest. */
1247	/* Note: only in the nested paging case can CR3 & CR4 be changed by the guest. */
1248	if ( pVM->hwaccm.s.fNestedPaging
1249	&& pCtx->cr3 != pVMCB->guest.u64CR3)
1250	{
1251	CPUMSetGuestCR3(pVCpu, pVMCB->guest.u64CR3);
1252	PGMUpdateCR3(pVCpu, pVMCB->guest.u64CR3);
1253	}
1254
1255	/* Note! NOW IT'S SAFE FOR LOGGING! */
1256
1257	/* Take care of instruction fusing (sti, mov ss) (see 15.20.5 Interrupt Shadows) */
1258	if (pVMCB->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
1259	{
1260	Log(("uInterruptState %x rip=%RGv\n", pVMCB->ctrl.u64IntShadow, (RTGCPTR)pCtx->rip));
1261	EMSetInhibitInterruptsPC(pVCpu, pCtx->rip);
1262	}
1263	else
1264	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
1265
1266	Log2(("exitCode = %x\n", exitCode));
1267
1268	/* Sync back DR6 as it could have been changed by hitting breakpoints. */
1269	pCtx->dr[6] = pVMCB->guest.u64DR6;
1270	/* DR7.GD can be cleared by debug exceptions, so sync it back as well. */
1271	pCtx->dr[7] = pVMCB->guest.u64DR7;
1272
1273	/* Check if an injected event was interrupted prematurely. */
1274	pVCpu->hwaccm.s.Event.intInfo = pVMCB->ctrl.ExitIntInfo.au64[0];
1275	if ( pVMCB->ctrl.ExitIntInfo.n.u1Valid
1276	&& pVMCB->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT /* we don't care about 'int xx' as the instruction will be restarted. */)
1277	{
1278	Log(("Pending inject %RX64 at %RGv exit=%08x\n", pVCpu->hwaccm.s.Event.intInfo, (RTGCPTR)pCtx->rip, exitCode));
1279
1280	#ifdef LOG_ENABLED
1281	SVM_EVENT Event;
1282	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
1283
1284	if ( exitCode == SVM_EXIT_EXCEPTION_E
1285	&& Event.n.u8Vector == 0xE)
1286	{
1287	Log(("Double fault!\n"));
1288	}
1289	#endif
1290
1291	pVCpu->hwaccm.s.Event.fPending = true;
1292	/* Error code present? (redundant) */
1293	if (pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid)
1294	{
1295	pVCpu->hwaccm.s.Event.errCode = pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode;
1296	}
1297	else
1298	pVCpu->hwaccm.s.Event.errCode = 0;
1299	}
1300	#ifdef VBOX_WITH_STATISTICS
1301	if (exitCode == SVM_EXIT_NPF)
1302	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitReasonNPF);
1303	else
1304	STAM_COUNTER_INC(&pVCpu->hwaccm.s.paStatExitReasonR0[exitCode & MASK_EXITREASON_STAT]);
1305	#endif
1306
1307	if (fSyncTPR)
1308	{
1309	rc = PDMApicSetTPR(pVM, pVMCB->ctrl.IntCtrl.n.u8VTPR);
1310	AssertRC(rc);
1311	}
1312
1313	/* Deal with the reason of the VM-exit. */
1314	switch (exitCode)
1315	{
1316	case SVM_EXIT_EXCEPTION_0: case SVM_EXIT_EXCEPTION_1: case SVM_EXIT_EXCEPTION_2: case SVM_EXIT_EXCEPTION_3:
1317	case SVM_EXIT_EXCEPTION_4: case SVM_EXIT_EXCEPTION_5: case SVM_EXIT_EXCEPTION_6: case SVM_EXIT_EXCEPTION_7:
1318	case SVM_EXIT_EXCEPTION_8: case SVM_EXIT_EXCEPTION_9: case SVM_EXIT_EXCEPTION_A: case SVM_EXIT_EXCEPTION_B:
1319	case SVM_EXIT_EXCEPTION_C: case SVM_EXIT_EXCEPTION_D: case SVM_EXIT_EXCEPTION_E: case SVM_EXIT_EXCEPTION_F:
1320	case SVM_EXIT_EXCEPTION_10: case SVM_EXIT_EXCEPTION_11: case SVM_EXIT_EXCEPTION_12: case SVM_EXIT_EXCEPTION_13:
1321	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16: case SVM_EXIT_EXCEPTION_17:
1322	case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19: case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B:
1323	case SVM_EXIT_EXCEPTION_1C: case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
1324	{
1325	/* Pending trap. */
1326	SVM_EVENT Event;
1327	uint32_t vector = exitCode - SVM_EXIT_EXCEPTION_0;
1328
1329	Log2(("Hardware/software interrupt %d\n", vector));
1330	switch (vector)
1331	{
1332	case X86_XCPT_DB:
1333	{
1334	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDB);
1335
1336	/* Note that we don't support guest and host-initiated debugging at the same time. */
1337	Assert(DBGFIsStepping(pVCpu));
1338
1339	rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pCtx->dr[6]);
1340	if (rc == VINF_EM_RAW_GUEST_TRAP)
1341	{
1342	Log(("Trap %x (debug) at %016RX64\n", vector, pCtx->rip));
1343
1344	/* Reinject the exception. */
1345	Event.au64[0] = 0;
1346	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1347	Event.n.u1Valid = 1;
1348	Event.n.u8Vector = X86_XCPT_DB;
1349
1350	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1351
1352	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1353	goto ResumeExecution;
1354	}
1355	/* Return to ring 3 to deal with the debug exit code. */
1356	break;
1357	}
1358
1359	case X86_XCPT_NM:
1360	{
1361	Log(("#NM fault at %RGv\n", (RTGCPTR)pCtx->rip));
1362
1363	/** @todo don't intercept #NM exceptions anymore when we've activated the guest FPU state. */
1364	/* If we sync the FPU/XMM state on-demand, then we can continue execution as if nothing has happened. */
1365	rc = CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
1366	if (rc == VINF_SUCCESS)
1367	{
1368	Assert(CPUMIsGuestFPUStateActive(pVCpu));
1369	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowNM);
1370
1371	/* Continue execution. */
1372	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1373	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1374
1375	goto ResumeExecution;
1376	}
1377
1378	Log(("Forward #NM fault to the guest\n"));
1379	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNM);
1380
1381	Event.au64[0] = 0;
1382	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1383	Event.n.u1Valid = 1;
1384	Event.n.u8Vector = X86_XCPT_NM;
1385
1386	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1387	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1388	goto ResumeExecution;
1389	}
1390
1391	case X86_XCPT_PF: /* Page fault */
1392	{
1393	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1394	RTGCUINTPTR uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1395
1396	#ifdef DEBUG
1397	if (pVM->hwaccm.s.fNestedPaging)
1398	{ /* A genuine pagefault.
1399	* Forward the trap to the guest by injecting the exception and resuming execution.
1400	*/
1401	Log(("Guest page fault at %RGv cr2=%RGv error code %x rsp=%RGv\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode, (RTGCPTR)pCtx->rsp));
1402	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1403
1404	/* Now we must update CR2. */
1405	pCtx->cr2 = uFaultAddress;
1406
1407	Event.au64[0] = 0;
1408	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1409	Event.n.u1Valid = 1;
1410	Event.n.u8Vector = X86_XCPT_PF;
1411	Event.n.u1ErrorCodeValid = 1;
1412	Event.n.u32ErrorCode = errCode;
1413
1414	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1415
1416	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1417	goto ResumeExecution;
1418	}
1419	#endif
1420	Assert(!pVM->hwaccm.s.fNestedPaging);
1421
1422	Log2(("Page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1423	/* Exit qualification contains the linear address of the page fault. */
1424	TRPMAssertTrap(pVCpu, X86_XCPT_PF, TRPM_TRAP);
1425	TRPMSetErrorCode(pVCpu, errCode);
1426	TRPMSetFaultAddress(pVCpu, uFaultAddress);
1427
1428	/* Forward it to our trap handler first, in case our shadow pages are out of sync. */
1429	rc = PGMTrap0eHandler(pVCpu, errCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
1430	Log2(("PGMTrap0eHandler %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, rc));
1431	if (rc == VINF_SUCCESS)
1432	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1433	Log2(("Shadow page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1434	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1435
1436	TRPMResetTrap(pVCpu);
1437
1438	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1439	goto ResumeExecution;
1440	}
1441	else
1442	if (rc == VINF_EM_RAW_GUEST_TRAP)
1443	{ /* A genuine pagefault.
1444	* Forward the trap to the guest by injecting the exception and resuming execution.
1445	*/
1446	Log2(("Forward page fault to the guest\n"));
1447	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1448	/* The error code might have been changed. */
1449	errCode = TRPMGetErrorCode(pVCpu);
1450
1451	TRPMResetTrap(pVCpu);
1452
1453	/* Now we must update CR2. */
1454	pCtx->cr2 = uFaultAddress;
1455
1456	Event.au64[0] = 0;
1457	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1458	Event.n.u1Valid = 1;
1459	Event.n.u8Vector = X86_XCPT_PF;
1460	Event.n.u1ErrorCodeValid = 1;
1461	Event.n.u32ErrorCode = errCode;
1462
1463	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1464
1465	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1466	goto ResumeExecution;
1467	}
1468	#ifdef VBOX_STRICT
1469	if (rc != VINF_EM_RAW_EMULATE_INSTR && rc != VINF_EM_RAW_EMULATE_IO_BLOCK)
1470	LogFlow(("PGMTrap0eHandler failed with %d\n", rc));
1471	#endif
1472	/* Need to go back to the recompiler to emulate the instruction. */
1473	TRPMResetTrap(pVCpu);
1474	break;
1475	}
1476
1477	case X86_XCPT_MF: /* Floating point exception. */
1478	{
1479	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestMF);
1480	if (!(pCtx->cr0 & X86_CR0_NE))
1481	{
1482	/* old style FPU error reporting needs some extra work. */
1483	/** @todo don't fall back to the recompiler, but do it manually. */
1484	rc = VINF_EM_RAW_EMULATE_INSTR;
1485	break;
1486	}
1487	Log(("Trap %x at %RGv\n", vector, (RTGCPTR)pCtx->rip));
1488
1489	Event.au64[0] = 0;
1490	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1491	Event.n.u1Valid = 1;
1492	Event.n.u8Vector = X86_XCPT_MF;
1493
1494	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1495
1496	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1497	goto ResumeExecution;
1498	}
1499
1500	#ifdef VBOX_STRICT
1501	case X86_XCPT_GP: /* General protection failure exception.*/
1502	case X86_XCPT_UD: /* Unknown opcode exception. */
1503	case X86_XCPT_DE: /* Divide error. */
1504	case X86_XCPT_SS: /* Stack segment exception. */
1505	case X86_XCPT_NP: /* Segment not present exception. */
1506	{
1507	Event.au64[0] = 0;
1508	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1509	Event.n.u1Valid = 1;
1510	Event.n.u8Vector = vector;
1511
1512	switch(vector)
1513	{
1514	case X86_XCPT_GP:
1515	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestGP);
1516	Event.n.u1ErrorCodeValid = 1;
1517	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1518	break;
1519	case X86_XCPT_DE:
1520	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDE);
1521	break;
1522	case X86_XCPT_UD:
1523	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestUD);
1524	break;
1525	case X86_XCPT_SS:
1526	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestSS);
1527	Event.n.u1ErrorCodeValid = 1;
1528	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1529	break;
1530	case X86_XCPT_NP:
1531	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNP);
1532	Event.n.u1ErrorCodeValid = 1;
1533	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1534	break;
1535	}
1536	Log(("Trap %x at %RGv esi=%x\n", vector, (RTGCPTR)pCtx->rip, pCtx->esi));
1537	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1538
1539	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1540	goto ResumeExecution;
1541	}
1542	#endif
1543	default:
1544	AssertMsgFailed(("Unexpected vm-exit caused by exception %x\n", vector));
1545	rc = VERR_EM_INTERNAL_ERROR;
1546	break;
1547
1548	} /* switch (vector) */
1549	break;
1550	}
1551
1552	case SVM_EXIT_NPF:
1553	{
1554	/* EXITINFO1 contains fault errorcode; EXITINFO2 contains the guest physical address causing the fault. */
1555	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1556	RTGCPHYS uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1557	PGMMODE enmShwPagingMode;
1558
1559	Assert(pVM->hwaccm.s.fNestedPaging);
1560	Log(("Nested page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1561	/* Exit qualification contains the linear address of the page fault. */
1562	TRPMAssertTrap(pVCpu, X86_XCPT_PF, TRPM_TRAP);
1563	TRPMSetErrorCode(pVCpu, errCode);
1564	TRPMSetFaultAddress(pVCpu, uFaultAddress);
1565
1566	/* Handle the pagefault trap for the nested shadow table. */
1567	#if HC_ARCH_BITS == 32
1568	if (CPUMIsGuestInLongModeEx(pCtx))
1569	enmShwPagingMode = PGMMODE_AMD64_NX;
1570	else
1571	#endif
1572	enmShwPagingMode = PGMGetHostMode(pVM);
1573
1574	rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmShwPagingMode, errCode, CPUMCTX2CORE(pCtx), uFaultAddress);
1575	Log2(("PGMR0Trap0eHandlerNestedPaging %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, rc));
1576	if (rc == VINF_SUCCESS)
1577	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1578	Log2(("Shadow page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1579	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1580
1581	TRPMResetTrap(pVCpu);
1582
1583	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1584	goto ResumeExecution;
1585	}
1586
1587	#ifdef VBOX_STRICT
1588	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1589	LogFlow(("PGMTrap0eHandlerNestedPaging failed with %d\n", rc));
1590	#endif
1591	/* Need to go back to the recompiler to emulate the instruction. */
1592	TRPMResetTrap(pVCpu);
1593	break;
1594	}
1595
1596	case SVM_EXIT_VINTR:
1597	/* A virtual interrupt is about to be delivered, which means IF=1. */
1598	Log(("SVM_EXIT_VINTR IF=%d\n", pCtx->eflags.Bits.u1IF));
1599	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 0;
1600	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0;
1601	goto ResumeExecution;
1602
1603	case SVM_EXIT_FERR_FREEZE:
1604	case SVM_EXIT_INTR:
1605	case SVM_EXIT_NMI:
1606	case SVM_EXIT_SMI:
1607	case SVM_EXIT_INIT:
1608	/* External interrupt; leave to allow it to be dispatched again. */
1609	rc = VINF_EM_RAW_INTERRUPT;
1610	break;
1611
1612	case SVM_EXIT_WBINVD:
1613	case SVM_EXIT_INVD: /* Guest software attempted to execute INVD. */
1614	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvd);
1615	/* Skip instruction and continue directly. */
1616	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1617	/* Continue execution.*/
1618	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1619	goto ResumeExecution;
1620
1621	case SVM_EXIT_CPUID: /* Guest software attempted to execute CPUID. */
1622	{
1623	Log2(("SVM: Cpuid at %RGv for %x\n", (RTGCPTR)pCtx->rip, pCtx->eax));
1624	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCpuid);
1625	rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
1626	if (rc == VINF_SUCCESS)
1627	{
1628	/* Update EIP and continue execution. */
1629	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1630	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1631	goto ResumeExecution;
1632	}
1633	AssertMsgFailed(("EMU: cpuid failed with %Rrc\n", rc));
1634	rc = VINF_EM_RAW_EMULATE_INSTR;
1635	break;
1636	}
1637
1638	case SVM_EXIT_RDTSC: /* Guest software attempted to execute RDTSC. */
1639	{
1640	Log2(("SVM: Rdtsc\n"));
1641	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
1642	rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
1643	if (rc == VINF_SUCCESS)
1644	{
1645	/* Update EIP and continue execution. */
1646	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1647	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1648	goto ResumeExecution;
1649	}
1650	rc = VINF_EM_RAW_EMULATE_INSTR;
1651	break;
1652	}
1653
1654	case SVM_EXIT_RDPMC: /* Guest software attempted to execute RDPMC. */
1655	{
1656	Log2(("SVM: Rdpmc %x\n", pCtx->ecx));
1657	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdpmc);
1658	rc = EMInterpretRdpmc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
1659	if (rc == VINF_SUCCESS)
1660	{
1661	/* Update EIP and continue execution. */
1662	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1663	goto ResumeExecution;
1664	}
1665	rc = VINF_EM_RAW_EMULATE_INSTR;
1666	break;
1667	}
1668
1669	case SVM_EXIT_RDTSCP: /* Guest software attempted to execute RDTSCP. */
1670	{
1671	Log2(("SVM: Rdtscp\n"));
1672	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
1673	rc = EMInterpretRdtscp(pVM, pVCpu, pCtx);
1674	if (rc == VINF_SUCCESS)
1675	{
1676	/* Update EIP and continue execution. */
1677	pCtx->rip += 3; /* Note! hardcoded opcode size! */
1678	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1679	goto ResumeExecution;
1680	}
1681	AssertMsgFailed(("EMU: rdtscp failed with %Rrc\n", rc));
1682	rc = VINF_EM_RAW_EMULATE_INSTR;
1683	break;
1684	}
1685
1686	case SVM_EXIT_INVLPG: /* Guest software attempted to execute INVPG. */
1687	{
1688	Log2(("SVM: invlpg\n"));
1689	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvpg);
1690
1691	Assert(!pVM->hwaccm.s.fNestedPaging);
1692
1693	/* Truly a pita. Why can't SVM give the same information as VT-x? */
1694	rc = SVMR0InterpretInvpg(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVMCB->ctrl.TLBCtrl.n.u32ASID);
1695	if (rc == VINF_SUCCESS)
1696	{
1697	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageInvlpg);
1698	goto ResumeExecution; /* eip already updated */
1699	}
1700	break;
1701	}
1702
1703	case SVM_EXIT_WRITE_CR0: case SVM_EXIT_WRITE_CR1: case SVM_EXIT_WRITE_CR2: case SVM_EXIT_WRITE_CR3:
1704	case SVM_EXIT_WRITE_CR4: case SVM_EXIT_WRITE_CR5: case SVM_EXIT_WRITE_CR6: case SVM_EXIT_WRITE_CR7:
1705	case SVM_EXIT_WRITE_CR8: case SVM_EXIT_WRITE_CR9: case SVM_EXIT_WRITE_CR10: case SVM_EXIT_WRITE_CR11:
1706	case SVM_EXIT_WRITE_CR12: case SVM_EXIT_WRITE_CR13: case SVM_EXIT_WRITE_CR14: case SVM_EXIT_WRITE_CR15:
1707	{
1708	uint32_t cbSize;
1709
1710	Log2(("SVM: %RGv mov cr%d, \n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_CR0));
1711	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxWrite[exitCode - SVM_EXIT_WRITE_CR0]);
1712	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
1713
1714	switch (exitCode - SVM_EXIT_WRITE_CR0)
1715	{
1716	case 0:
1717	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1718	break;
1719	case 2:
1720	break;
1721	case 3:
1722	Assert(!pVM->hwaccm.s.fNestedPaging);
1723	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR3;
1724	break;
1725	case 4:
1726	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR4;
1727	break;
1728	case 8:
1729	break;
1730	default:
1731	AssertFailed();
1732	}
1733	/* Check if a sync operation is pending. */
1734	if ( rc == VINF_SUCCESS /* don't bother if we are going to ring 3 anyway */
1735	&& VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
1736	{
1737	rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
1738	AssertRC(rc);
1739
1740	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBCRxChange);
1741
1742	/* Must be set by PGMSyncCR3 */
1743	Assert(rc != VINF_SUCCESS \|\| PGMGetGuestMode(pVCpu) <= PGMMODE_PROTECTED \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1744	}
1745	if (rc == VINF_SUCCESS)
1746	{
1747	/* EIP has been updated already. */
1748
1749	/* Only resume if successful. */
1750	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1751	goto ResumeExecution;
1752	}
1753	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1754	break;
1755	}
1756
1757	case SVM_EXIT_READ_CR0: case SVM_EXIT_READ_CR1: case SVM_EXIT_READ_CR2: case SVM_EXIT_READ_CR3:
1758	case SVM_EXIT_READ_CR4: case SVM_EXIT_READ_CR5: case SVM_EXIT_READ_CR6: case SVM_EXIT_READ_CR7:
1759	case SVM_EXIT_READ_CR8: case SVM_EXIT_READ_CR9: case SVM_EXIT_READ_CR10: case SVM_EXIT_READ_CR11:
1760	case SVM_EXIT_READ_CR12: case SVM_EXIT_READ_CR13: case SVM_EXIT_READ_CR14: case SVM_EXIT_READ_CR15:
1761	{
1762	uint32_t cbSize;
1763
1764	Log2(("SVM: %RGv mov x, cr%d\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_CR0));
1765	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxRead[exitCode - SVM_EXIT_READ_CR0]);
1766	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
1767	if (rc == VINF_SUCCESS)
1768	{
1769	/* EIP has been updated already. */
1770
1771	/* Only resume if successful. */
1772	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1773	goto ResumeExecution;
1774	}
1775	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1776	break;
1777	}
1778
1779	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
1780	case SVM_EXIT_WRITE_DR4: case SVM_EXIT_WRITE_DR5: case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7:
1781	case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9: case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11:
1782	case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13: case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
1783	{
1784	uint32_t cbSize;
1785
1786	Log2(("SVM: %RGv mov dr%d, x\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_DR0));
1787	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxWrite);
1788
1789	if (!DBGFIsStepping(pVCpu))
1790	{
1791	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
1792
1793	/* Disable drx move intercepts. */
1794	pVMCB->ctrl.u16InterceptRdDRx = 0;
1795	pVMCB->ctrl.u16InterceptWrDRx = 0;
1796
1797	/* Save the host and load the guest debug state. */
1798	rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
1799	AssertRC(rc);
1800
1801	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1802	goto ResumeExecution;
1803	}
1804
1805	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
1806	if (rc == VINF_SUCCESS)
1807	{
1808	/* EIP has been updated already. */
1809	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
1810
1811	/* Only resume if successful. */
1812	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1813	goto ResumeExecution;
1814	}
1815	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1816	break;
1817	}
1818
1819	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
1820	case SVM_EXIT_READ_DR4: case SVM_EXIT_READ_DR5: case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7:
1821	case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9: case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11:
1822	case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13: case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
1823	{
1824	uint32_t cbSize;
1825
1826	Log2(("SVM: %RGv mov x, dr%d\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_DR0));
1827	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxRead);
1828
1829	if (!DBGFIsStepping(pVCpu))
1830	{
1831	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
1832
1833	/* Disable drx move intercepts. */
1834	pVMCB->ctrl.u16InterceptRdDRx = 0;
1835	pVMCB->ctrl.u16InterceptWrDRx = 0;
1836
1837	/* Save the host and load the guest debug state. */
1838	rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
1839	AssertRC(rc);
1840
1841	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1842	goto ResumeExecution;
1843	}
1844
1845	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
1846	if (rc == VINF_SUCCESS)
1847	{
1848	/* EIP has been updated already. */
1849
1850	/* Only resume if successful. */
1851	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1852	goto ResumeExecution;
1853	}
1854	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1855	break;
1856	}
1857
1858	/* Note: We'll get a #GP if the IO instruction isn't allowed (IOPL or TSS bitmap); no need to double check. */
1859	case SVM_EXIT_IOIO: /* I/O instruction. */
1860	{
1861	SVM_IOIO_EXIT IoExitInfo;
1862	uint32_t uIOSize, uAndVal;
1863
1864	IoExitInfo.au32[0] = pVMCB->ctrl.u64ExitInfo1;
1865
1866	/** @todo could use a lookup table here */
1867	if (IoExitInfo.n.u1OP8)
1868	{
1869	uIOSize = 1;
1870	uAndVal = 0xff;
1871	}
1872	else
1873	if (IoExitInfo.n.u1OP16)
1874	{
1875	uIOSize = 2;
1876	uAndVal = 0xffff;
1877	}
1878	else
1879	if (IoExitInfo.n.u1OP32)
1880	{
1881	uIOSize = 4;
1882	uAndVal = 0xffffffff;
1883	}
1884	else
1885	{
1886	AssertFailed(); /* should be fatal. */
1887	rc = VINF_EM_RAW_EMULATE_INSTR;
1888	break;
1889	}
1890
1891	if (IoExitInfo.n.u1STR)
1892	{
1893	/* ins/outs */
1894	DISCPUSTATE Cpu;
1895
1896	/* Disassemble manually to deal with segment prefixes. */
1897	rc = EMInterpretDisasOne(pVM, pVCpu, CPUMCTX2CORE(pCtx), &Cpu, NULL);
1898	if (rc == VINF_SUCCESS)
1899	{
1900	if (IoExitInfo.n.u1Type == 0)
1901	{
1902	Log2(("IOMInterpretOUTSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1903	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringWrite);
1904	rc = IOMInterpretOUTSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, Cpu.prefix, uIOSize);
1905	}
1906	else
1907	{
1908	Log2(("IOMInterpretINSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1909	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringRead);
1910	rc = IOMInterpretINSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, Cpu.prefix, uIOSize);
1911	}
1912	}
1913	else
1914	rc = VINF_EM_RAW_EMULATE_INSTR;
1915	}
1916	else
1917	{
1918	/* normal in/out */
1919	Assert(!IoExitInfo.n.u1REP);
1920
1921	if (IoExitInfo.n.u1Type == 0)
1922	{
1923	Log2(("IOMIOPortWrite %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize));
1924	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOWrite);
1925	rc = IOMIOPortWrite(pVM, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize);
1926	}
1927	else
1928	{
1929	uint32_t u32Val = 0;
1930
1931	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIORead);
1932	rc = IOMIOPortRead(pVM, IoExitInfo.n.u16Port, &u32Val, uIOSize);
1933	if (IOM_SUCCESS(rc))
1934	{
1935	/* Write back to the EAX register. */
1936	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
1937	Log2(("IOMIOPortRead %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, u32Val & uAndVal, uIOSize));
1938	}
1939	}
1940	}
1941	/*
1942	* Handled the I/O return codes.
1943	* (The unhandled cases end up with rc == VINF_EM_RAW_EMULATE_INSTR.)
1944	*/
1945	if (IOM_SUCCESS(rc))
1946	{
1947	/* Update EIP and continue execution. */
1948	pCtx->rip = pVMCB->ctrl.u64ExitInfo2; /* RIP/EIP of the next instruction is saved in EXITINFO2. */
1949	if (RT_LIKELY(rc == VINF_SUCCESS))
1950	{
1951	/* If any IO breakpoints are armed, then we should check if a debug trap needs to be generated. */
1952	if (pCtx->dr[7] & X86_DR7_ENABLED_MASK)
1953	{
1954	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxIOCheck);
1955	for (unsigned i=0;i<4;i++)
1956	{
1957	unsigned uBPLen = g_aIOSize[X86_DR7_GET_LEN(pCtx->dr[7], i)];
1958
1959	if ( (IoExitInfo.n.u16Port >= pCtx->dr[i] && IoExitInfo.n.u16Port < pCtx->dr[i] + uBPLen)
1960	&& (pCtx->dr[7] & (X86_DR7_L(i) \| X86_DR7_G(i)))
1961	&& (pCtx->dr[7] & X86_DR7_RW(i, X86_DR7_RW_IO)) == X86_DR7_RW(i, X86_DR7_RW_IO))
1962	{
1963	SVM_EVENT Event;
1964
1965	Assert(CPUMIsGuestDebugStateActive(pVCpu));
1966
1967	/* Clear all breakpoint status flags and set the one we just hit. */
1968	pCtx->dr[6] &= ~(X86_DR6_B0\|X86_DR6_B1\|X86_DR6_B2\|X86_DR6_B3);
1969	pCtx->dr[6] \|= (uint64_t)RT_BIT(i);
1970
1971	/* Note: AMD64 Architecture Programmer's Manual 13.1:
1972	* Bits 15:13 of the DR6 register is never cleared by the processor and must be cleared by software after
1973	* the contents have been read.
1974	*/
1975	pVMCB->guest.u64DR6 = pCtx->dr[6];
1976
1977	/* X86_DR7_GD will be cleared if drx accesses should be trapped inside the guest. */
1978	pCtx->dr[7] &= ~X86_DR7_GD;
1979
1980	/* Paranoia. */
1981	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
1982	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
1983	pCtx->dr[7] \|= 0x400; /* must be one */
1984
1985	pVMCB->guest.u64DR7 = pCtx->dr[7];
1986
1987	/* Inject the exception. */
1988	Log(("Inject IO debug trap at %RGv\n", (RTGCPTR)pCtx->rip));
1989
1990	Event.au64[0] = 0;
1991	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1992	Event.n.u1Valid = 1;
1993	Event.n.u8Vector = X86_XCPT_DB;
1994
1995	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1996
1997	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
1998	goto ResumeExecution;
1999	}
2000	}
2001	}
2002
2003	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
2004	goto ResumeExecution;
2005	}
2006	Log2(("EM status from IO at %RGv %x size %d: %Rrc\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize, rc));
2007	break;
2008	}
2009
2010	#ifdef VBOX_STRICT
2011	if (rc == VINF_IOM_HC_IOPORT_READ)
2012	Assert(IoExitInfo.n.u1Type != 0);
2013	else if (rc == VINF_IOM_HC_IOPORT_WRITE)
2014	Assert(IoExitInfo.n.u1Type == 0);
2015	else
2016	AssertMsg(RT_FAILURE(rc) \|\| rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", rc));
2017	#endif
2018	Log2(("Failed IO at %RGv %x size %d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
2019	break;
2020	}
2021
2022	case SVM_EXIT_HLT:
2023	/** Check if external interrupts are pending; if so, don't switch back. */
2024	pCtx->rip++; /* skip hlt */
2025	if ( pCtx->eflags.Bits.u1IF
2026	&& VMCPU_FF_ISPENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC\|VMCPU_FF_INTERRUPT_PIC)))
2027	goto ResumeExecution;
2028
2029	rc = VINF_EM_HALT;
2030	break;
2031
2032	case SVM_EXIT_RSM:
2033	case SVM_EXIT_INVLPGA:
2034	case SVM_EXIT_VMRUN:
2035	case SVM_EXIT_VMMCALL:
2036	case SVM_EXIT_VMLOAD:
2037	case SVM_EXIT_VMSAVE:
2038	case SVM_EXIT_STGI:
2039	case SVM_EXIT_CLGI:
2040	case SVM_EXIT_SKINIT:
2041	{
2042	/* Unsupported instructions. */
2043	SVM_EVENT Event;
2044
2045	Event.au64[0] = 0;
2046	Event.n.u3Type = SVM_EVENT_EXCEPTION;
2047	Event.n.u1Valid = 1;
2048	Event.n.u8Vector = X86_XCPT_UD;
2049
2050	Log(("Forced #UD trap at %RGv\n", (RTGCPTR)pCtx->rip));
2051	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
2052
2053	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
2054	goto ResumeExecution;
2055	}
2056
2057	/* Emulate in ring 3. */
2058	case SVM_EXIT_MSR:
2059	{
2060	uint32_t cbSize;
2061
2062	/* 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. */
2063	Log(("SVM: %s\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr"));
2064	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
2065	if (rc == VINF_SUCCESS)
2066	{
2067	/* EIP has been updated already. */
2068
2069	/* Only resume if successful. */
2070	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
2071	goto ResumeExecution;
2072	}
2073	AssertMsg(rc == VERR_EM_INTERPRETER, ("EMU: %s failed with %Rrc\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr", rc));
2074	break;
2075	}
2076
2077	case SVM_EXIT_MONITOR:
2078	case SVM_EXIT_PAUSE:
2079	case SVM_EXIT_MWAIT_UNCOND:
2080	case SVM_EXIT_MWAIT_ARMED:
2081	case SVM_EXIT_TASK_SWITCH: /* can change CR3; emulate */
2082	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
2083	break;
2084
2085	case SVM_EXIT_SHUTDOWN:
2086	rc = VINF_EM_RESET; /* Triple fault equals a reset. */
2087	break;
2088
2089	case SVM_EXIT_IDTR_READ:
2090	case SVM_EXIT_GDTR_READ:
2091	case SVM_EXIT_LDTR_READ:
2092	case SVM_EXIT_TR_READ:
2093	case SVM_EXIT_IDTR_WRITE:
2094	case SVM_EXIT_GDTR_WRITE:
2095	case SVM_EXIT_LDTR_WRITE:
2096	case SVM_EXIT_TR_WRITE:
2097	case SVM_EXIT_CR0_SEL_WRITE:
2098	default:
2099	/* Unexpected exit codes. */
2100	rc = VERR_EM_INTERNAL_ERROR;
2101	AssertMsgFailed(("Unexpected exit code %x\n", exitCode)); /* Can't happen. */
2102	break;
2103	}
2104
2105	end:
2106
2107	/* Signal changes for the recompiler. */
2108	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR \| CPUM_CHANGED_LDTR \| CPUM_CHANGED_GDTR \| CPUM_CHANGED_IDTR \| CPUM_CHANGED_TR \| CPUM_CHANGED_HIDDEN_SEL_REGS);
2109
2110	/* If we executed vmrun and an external irq was pending, then we don't have to do a full sync the next time. */
2111	if (exitCode == SVM_EXIT_INTR)
2112	{
2113	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatPendingHostIrq);
2114	/* On the next entry we'll only sync the host context. */
2115	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_HOST_CONTEXT;
2116	}
2117	else
2118	{
2119	/* On the next entry we'll sync everything. */
2120	/** @todo we can do better than this */
2121	/* Not in the VINF_PGM_CHANGE_MODE though! */
2122	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_ALL;
2123	}
2124
2125	/* translate into a less severe return code */
2126	if (rc == VERR_EM_INTERPRETER)
2127	rc = VINF_EM_RAW_EMULATE_INSTR;
2128
2129	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
2130	return rc;
2131	}
2132
2133	/**
2134	* Enters the AMD-V session
2135	*
2136	* @returns VBox status code.
2137	* @param pVM The VM to operate on.
2138	* @param pVCpu The VM CPU to operate on.
2139	* @param pCpu CPU info struct
2140	*/
2141	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHWACCM_CPUINFO pCpu)
2142	{
2143	Assert(pVM->hwaccm.s.svm.fSupported);
2144
2145	LogFlow(("SVMR0Enter cpu%d last=%d asid=%d\n", pCpu->idCpu, pVCpu->hwaccm.s.idLastCpu, pVCpu->hwaccm.s.uCurrentASID));
2146	pVCpu->hwaccm.s.fResumeVM = false;
2147
2148	/* Force to reload LDTR, so we'll execute VMLoad to load additional guest state. */
2149	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_LDTR;
2150
2151	return VINF_SUCCESS;
2152	}
2153
2154
2155	/**
2156	* Leaves the AMD-V session
2157	*
2158	* @returns VBox status code.
2159	* @param pVM The VM to operate on.
2160	* @param pVCpu The VM CPU to operate on.
2161	* @param pCtx CPU context
2162	*/
2163	VMMR0DECL(int) SVMR0Leave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2164	{
2165	SVM_VMCB pVMCB = (SVM_VMCB )pVCpu->hwaccm.s.svm.pVMCB;
2166
2167	Assert(pVM->hwaccm.s.svm.fSupported);
2168
2169	/* Save the guest debug state if necessary. */
2170	if (CPUMIsGuestDebugStateActive(pVCpu))
2171	{
2172	CPUMR0SaveGuestDebugState(pVM, pVCpu, pCtx, false /* skip DR6 */);
2173
2174	/* Intercept all DRx reads and writes again. Changed later on. */
2175	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
2176	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
2177
2178	/* Resync the debug registers the next time. */
2179	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
2180	}
2181	else
2182	Assert(pVMCB->ctrl.u16InterceptRdDRx == 0xFFFF && pVMCB->ctrl.u16InterceptWrDRx == 0xFFFF);
2183
2184	return VINF_SUCCESS;
2185	}
2186
2187
2188	static int svmR0InterpretInvlPg(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2189	{
2190	OP_PARAMVAL param1;
2191	RTGCPTR addr;
2192
2193	int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->param1, &param1, PARAM_SOURCE);
2194	if(RT_FAILURE(rc))
2195	return VERR_EM_INTERPRETER;
2196
2197	switch(param1.type)
2198	{
2199	case PARMTYPE_IMMEDIATE:
2200	case PARMTYPE_ADDRESS:
2201	if(!(param1.flags & (PARAM_VAL32\|PARAM_VAL64)))
2202	return VERR_EM_INTERPRETER;
2203	addr = param1.val.val64;
2204	break;
2205
2206	default:
2207	return VERR_EM_INTERPRETER;
2208	}
2209
2210	/** @todo is addr always a flat linear address or ds based
2211	* (in absence of segment override prefixes)????
2212	*/
2213	rc = PGMInvalidatePage(pVCpu, addr);
2214	if (RT_SUCCESS(rc))
2215	{
2216	/* Manually invalidate the page for the VM's TLB. */
2217	Log(("SVMR0InvlpgA %RGv ASID=%d\n", addr, uASID));
2218	SVMR0InvlpgA(addr, uASID);
2219	return VINF_SUCCESS;
2220	}
2221	Assert(rc == VERR_REM_FLUSHED_PAGES_OVERFLOW);
2222	return rc;
2223	}
2224
2225	/**
2226	* Interprets INVLPG
2227	*
2228	* @returns VBox status code.
2229	* @retval VINF_* Scheduling instructions.
2230	* @retval VERR_EM_INTERPRETER Something we can't cope with.
2231	* @retval VERR_* Fatal errors.
2232	*
2233	* @param pVM The VM handle.
2234	* @param pRegFrame The register frame.
2235	* @param ASID Tagged TLB id for the guest
2236	*
2237	* Updates the EIP if an instruction was executed successfully.
2238	*/
2239	static int SVMR0InterpretInvpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2240	{
2241	/*
2242	* Only allow 32 & 64 bits code.
2243	*/
2244	DISCPUMODE enmMode = SELMGetCpuModeFromSelector(pVM, pRegFrame->eflags, pRegFrame->cs, &pRegFrame->csHid);
2245	if (enmMode != CPUMODE_16BIT)
2246	{
2247	RTGCPTR pbCode;
2248	int rc = SELMValidateAndConvertCSAddr(pVM, pRegFrame->eflags, pRegFrame->ss, pRegFrame->cs, &pRegFrame->csHid, (RTGCPTR)pRegFrame->rip, &pbCode);
2249	if (RT_SUCCESS(rc))
2250	{
2251	uint32_t cbOp;
2252	DISCPUSTATE Cpu;
2253
2254	Cpu.mode = enmMode;
2255	rc = EMInterpretDisasOneEx(pVM, pVCpu, pbCode, pRegFrame, &Cpu, &cbOp);
2256	Assert(RT_FAILURE(rc) \|\| Cpu.pCurInstr->opcode == OP_INVLPG);
2257	if (RT_SUCCESS(rc) && Cpu.pCurInstr->opcode == OP_INVLPG)
2258	{
2259	Assert(cbOp == Cpu.opsize);
2260	rc = svmR0InterpretInvlPg(pVCpu, &Cpu, pRegFrame, uASID);
2261	if (RT_SUCCESS(rc))
2262	{
2263	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
2264	}
2265	return rc;
2266	}
2267	}
2268	}
2269	return VERR_EM_INTERPRETER;
2270	}
2271
2272
2273	/**
2274	* Invalidates a guest page
2275	*
2276	* @returns VBox status code.
2277	* @param pVM The VM to operate on.
2278	* @param pVCpu The VM CPU to operate on.
2279	* @param GCVirt Page to invalidate
2280	*/
2281	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
2282	{
2283	bool fFlushPending = pVM->hwaccm.s.svm.fAlwaysFlushTLB \| pVCpu->hwaccm.s.fForceTLBFlush;
2284
2285	/* Skip it if a TLB flush is already pending. */
2286	if (!fFlushPending)
2287	{
2288	SVM_VMCB *pVMCB;
2289
2290	Log2(("SVMR0InvalidatePage %RGv\n", GCVirt));
2291	AssertReturn(pVM, VERR_INVALID_PARAMETER);
2292	Assert(pVM->hwaccm.s.svm.fSupported);
2293
2294	/* @todo SMP */
2295	pVMCB = (SVM_VMCB *)pVM->aCpus[0].hwaccm.s.svm.pVMCB;
2296	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
2297
2298	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageManual);
2299	#if HC_ARCH_BITS == 32
2300	/* If we get a flush in 64 bits guest mode, then force a full TLB flush. Invlpga takes only 32 bits addresses. */
2301	if (CPUMIsGuestInLongMode(pVCpu))
2302	pVCpu->hwaccm.s.fForceTLBFlush = true;
2303	else
2304	#endif
2305	SVMR0InvlpgA(GCVirt, pVMCB->ctrl.TLBCtrl.n.u32ASID);
2306	}
2307	return VINF_SUCCESS;
2308	}
2309
2310
2311	/**
2312	* Invalidates a guest page by physical address
2313	*
2314	* @returns VBox status code.
2315	* @param pVM The VM to operate on.
2316	* @param pVCpu The VM CPU to operate on.
2317	* @param GCPhys Page to invalidate
2318	*/
2319	VMMR0DECL(int) SVMR0InvalidatePhysPage(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys)
2320	{
2321	Assert(pVM->hwaccm.s.fNestedPaging);
2322	/* invlpga only invalidates TLB entries for guest virtual addresses; we have no choice but to force a TLB flush here. */
2323	pVCpu->hwaccm.s.fForceTLBFlush = true;
2324	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBInvlpga);
2325	return VINF_SUCCESS;
2326	}
2327
2328	#if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
2329	/**
2330	* Prepares for and executes VMRUN (64 bits guests from a 32 bits hosts).
2331	*
2332	* @returns VBox status code.
2333	* @param pVMCBHostPhys Physical address of host VMCB.
2334	* @param pVMCBPhys Physical address of the VMCB.
2335	* @param pCtx Guest context.
2336	* @param pVM The VM to operate on.
2337	* @param pVCpu The VMCPU to operate on.
2338	*/
2339	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS pVMCBHostPhys, RTHCPHYS pVMCBPhys, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
2340	{
2341	uint32_t aParam[4];
2342
2343	aParam[0] = (uint32_t)(pVMCBHostPhys); /* Param 1: pVMCBHostPhys - Lo. */
2344	aParam[1] = (uint32_t)(pVMCBHostPhys >> 32); /* Param 1: pVMCBHostPhys - Hi. */
2345	aParam[2] = (uint32_t)(pVMCBPhys); /* Param 2: pVMCBPhys - Lo. */
2346	aParam[3] = (uint32_t)(pVMCBPhys >> 32); /* Param 2: pVMCBPhys - Hi. */
2347
2348	return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, pVM->hwaccm.s.pfnSVMGCVMRun64, 4, &aParam[0]);
2349	}
2350
2351	/**
2352	* Executes the specified handler in 64 mode
2353	*
2354	* @returns VBox status code.
2355	* @param pVM The VM to operate on.
2356	* @param pVCpu The VMCPU to operate on.
2357	* @param pCtx Guest context
2358	* @param pfnHandler RC handler
2359	* @param cbParam Number of parameters
2360	* @param paParam Array of 32 bits parameters
2361	*/
2362	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, RTRCPTR pfnHandler, uint32_t cbParam, uint32_t *paParam)
2363	{
2364	int rc;
2365	RTHCUINTREG uFlags;
2366
2367	/* @todo This code is not guest SMP safe (hyper stack) */
2368	AssertReturn(pVM->cCPUs == 1, VERR_ACCESS_DENIED);
2369	Assert(pfnHandler);
2370
2371	uFlags = ASMIntDisableFlags();
2372
2373	CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVM));
2374	CPUMSetHyperEIP(pVCpu, pfnHandler);
2375	for (int i=(int)cbParam-1;i>=0;i--)
2376	CPUMPushHyper(pVCpu, paParam[i]);
2377
2378	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatWorldSwitch3264, z);
2379	/* Call switcher. */
2380	rc = pVM->hwaccm.s.pfnHost32ToGuest64R0(pVM);
2381	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatWorldSwitch3264, z);
2382
2383	ASMSetFlags(uFlags);
2384	return rc;
2385	}
2386
2387	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */

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source: vbox/trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp@ 19420

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