HWSVMR0.cpp@ 37655

Last change on this file since 37655 was 37386, checked in by vboxsync, 14 years ago
VMM/HM: more paranoid poking code.
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1	/* $Id: HWSVMR0.cpp 37386 2011-06-08 15:15:11Z vboxsync $ */
2	/** @file
3	* HWACCM SVM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_HWACCM
22	#include <VBox/vmm/hwaccm.h>
23	#include <VBox/vmm/pgm.h>
24	#include <VBox/vmm/selm.h>
25	#include <VBox/vmm/iom.h>
26	#include <VBox/vmm/dbgf.h>
27	#include <VBox/vmm/tm.h>
28	#include <VBox/vmm/pdmapi.h>
29	#include "HWACCMInternal.h"
30	#include <VBox/vmm/vm.h>
31	#include <VBox/x86.h>
32	#include <VBox/vmm/hwacc_svm.h>
33	#include <VBox/err.h>
34	#include <VBox/log.h>
35	#include <VBox/dis.h>
36	#include <VBox/disopcode.h>
37	#include <iprt/param.h>
38	#include <iprt/assert.h>
39	#include <iprt/asm.h>
40	#include <iprt/asm-amd64-x86.h>
41	#include <iprt/cpuset.h>
42	#include <iprt/mp.h>
43	#include <iprt/time.h>
44	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
45	# include <iprt/thread.h>
46	#endif
47	#include "HWSVMR0.h"
48
49	/*******************************************************************************
50	* Internal Functions *
51	*******************************************************************************/
52	static int svmR0InterpretInvpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID);
53	static int svmR0EmulateTprVMMCall(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
54	static void svmR0SetMSRPermission(PVMCPU pVCpu, unsigned ulMSR, bool fRead, bool fWrite);
55
56	/*******************************************************************************
57	* Global Variables *
58	*******************************************************************************/
59
60	/**
61	* Sets up and activates AMD-V on the current CPU
62	*
63	* @returns VBox status code.
64	* @param pCpu CPU info struct
65	* @param pVM The VM to operate on. (can be NULL after a resume!!)
66	* @param pvCpuPage Pointer to the global cpu page.
67	* @param HCPhysCpuPage Physical address of the global cpu page.
68	*/
69	VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBLCPUINFO pCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
70	{
71	AssertReturn(HCPhysCpuPage != 0 && HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
72	AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
73
74	/* We must turn on AMD-V and setup the host state physical address, as
75	those MSRs are per-cpu/core. */
76	uint64_t fEfer = ASMRdMsr(MSR_K6_EFER);
77	if (fEfer & MSR_K6_EFER_SVME)
78	{
79	/* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE hack is active, then we
80	blindly use AMD-V. */
81	if ( pVM
82	&& pVM->hwaccm.s.svm.fIgnoreInUseError)
83	pCpu->fIgnoreAMDVInUseError = true;
84	if (!pCpu->fIgnoreAMDVInUseError)
85	return VERR_SVM_IN_USE;
86	}
87
88	/* Turn on AMD-V in the EFER MSR. */
89	ASMWrMsr(MSR_K6_EFER, fEfer \| MSR_K6_EFER_SVME);
90
91	/* Write the physical page address where the CPU will store the host state
92	while executing the VM. */
93	ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
94
95	return VINF_SUCCESS;
96	}
97
98	/**
99	* Deactivates AMD-V on the current CPU
100	*
101	* @returns VBox status code.
102	* @param pCpu CPU info struct
103	* @param pvCpuPage Pointer to the global cpu page.
104	* @param HCPhysCpuPage Physical address of the global cpu page.
105	*/
106	VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBLCPUINFO pCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
107	{
108	AssertReturn(HCPhysCpuPage != 0 && HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
109	AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
110
111	/* Turn off AMD-V in the EFER MSR. */
112	uint64_t fEfer = ASMRdMsr(MSR_K6_EFER);
113	ASMWrMsr(MSR_K6_EFER, fEfer & ~MSR_K6_EFER_SVME);
114
115	/* Invalidate host state physical address. */
116	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
117
118	return VINF_SUCCESS;
119	}
120
121	/**
122	* Does Ring-0 per VM AMD-V init.
123	*
124	* @returns VBox status code.
125	* @param pVM The VM to operate on.
126	*/
127	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
128	{
129	int rc;
130
131	pVM->hwaccm.s.svm.pMemObjIOBitmap = NIL_RTR0MEMOBJ;
132
133	/* Allocate 12 KB for the IO bitmap (doesn't seem to be a way to convince SVM not to use it) */
134	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjIOBitmap, 3 << PAGE_SHIFT, true /* executable R0 mapping */);
135	if (RT_FAILURE(rc))
136	return rc;
137
138	pVM->hwaccm.s.svm.pIOBitmap = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjIOBitmap);
139	pVM->hwaccm.s.svm.pIOBitmapPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjIOBitmap, 0);
140	/* Set all bits to intercept all IO accesses. */
141	ASMMemFill32(pVM->hwaccm.s.svm.pIOBitmap, PAGE_SIZE*3, 0xffffffff);
142
143	/* Erratum 170 which requires a forced TLB flush for each world switch:
144	* See http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/33610.pdf
145	*
146	* All BH-G1/2 and DH-G1/2 models include a fix:
147	* Athlon X2: 0x6b 1/2
148	* 0x68 1/2
149	* Athlon 64: 0x7f 1
150	* 0x6f 2
151	* Sempron: 0x7f 1/2
152	* 0x6f 2
153	* 0x6c 2
154	* 0x7c 2
155	* Turion 64: 0x68 2
156	*
157	*/
158	uint32_t u32Dummy;
159	uint32_t u32Version, u32Family, u32Model, u32Stepping, u32BaseFamily;
160	ASMCpuId(1, &u32Version, &u32Dummy, &u32Dummy, &u32Dummy);
161	u32BaseFamily= (u32Version >> 8) & 0xf;
162	u32Family = u32BaseFamily + (u32BaseFamily == 0xf ? ((u32Version >> 20) & 0x7f) : 0);
163	u32Model = ((u32Version >> 4) & 0xf);
164	u32Model = u32Model \| ((u32BaseFamily == 0xf ? (u32Version >> 16) & 0x0f : 0) << 4);
165	u32Stepping = u32Version & 0xf;
166	if ( u32Family == 0xf
167	&& !((u32Model == 0x68 \|\| u32Model == 0x6b \|\| u32Model == 0x7f) && u32Stepping >= 1)
168	&& !((u32Model == 0x6f \|\| u32Model == 0x6c \|\| u32Model == 0x7c) && u32Stepping >= 2))
169	{
170	Log(("SVMR0InitVM: AMD cpu with erratum 170 family %x model %x stepping %x\n", u32Family, u32Model, u32Stepping));
171	pVM->hwaccm.s.svm.fAlwaysFlushTLB = true;
172	}
173
174	/* Allocate VMCBs for all guest CPUs. */
175	for (VMCPUID i = 0; i < pVM->cCpus; i++)
176	{
177	PVMCPU pVCpu = &pVM->aCpus[i];
178
179	pVCpu->hwaccm.s.svm.pMemObjVMCBHost = NIL_RTR0MEMOBJ;
180	pVCpu->hwaccm.s.svm.pMemObjVMCB = NIL_RTR0MEMOBJ;
181	pVCpu->hwaccm.s.svm.pMemObjMSRBitmap = NIL_RTR0MEMOBJ;
182
183	/* Allocate one page for the host context */
184	rc = RTR0MemObjAllocCont(&pVCpu->hwaccm.s.svm.pMemObjVMCBHost, 1 << PAGE_SHIFT, true /* executable R0 mapping */);
185	if (RT_FAILURE(rc))
186	return rc;
187
188	pVCpu->hwaccm.s.svm.pVMCBHost = RTR0MemObjAddress(pVCpu->hwaccm.s.svm.pMemObjVMCBHost);
189	pVCpu->hwaccm.s.svm.pVMCBHostPhys = RTR0MemObjGetPagePhysAddr(pVCpu->hwaccm.s.svm.pMemObjVMCBHost, 0);
190	Assert(pVCpu->hwaccm.s.svm.pVMCBHostPhys < _4G);
191	ASMMemZeroPage(pVCpu->hwaccm.s.svm.pVMCBHost);
192
193	/* Allocate one page for the VM control block (VMCB). */
194	rc = RTR0MemObjAllocCont(&pVCpu->hwaccm.s.svm.pMemObjVMCB, 1 << PAGE_SHIFT, true /* executable R0 mapping */);
195	if (RT_FAILURE(rc))
196	return rc;
197
198	pVCpu->hwaccm.s.svm.pVMCB = RTR0MemObjAddress(pVCpu->hwaccm.s.svm.pMemObjVMCB);
199	pVCpu->hwaccm.s.svm.pVMCBPhys = RTR0MemObjGetPagePhysAddr(pVCpu->hwaccm.s.svm.pMemObjVMCB, 0);
200	Assert(pVCpu->hwaccm.s.svm.pVMCBPhys < _4G);
201	ASMMemZeroPage(pVCpu->hwaccm.s.svm.pVMCB);
202
203	/* Allocate 8 KB for the MSR bitmap (doesn't seem to be a way to convince SVM not to use it) */
204	rc = RTR0MemObjAllocCont(&pVCpu->hwaccm.s.svm.pMemObjMSRBitmap, 2 << PAGE_SHIFT, true /* executable R0 mapping */);
205	if (RT_FAILURE(rc))
206	return rc;
207
208	pVCpu->hwaccm.s.svm.pMSRBitmap = RTR0MemObjAddress(pVCpu->hwaccm.s.svm.pMemObjMSRBitmap);
209	pVCpu->hwaccm.s.svm.pMSRBitmapPhys = RTR0MemObjGetPagePhysAddr(pVCpu->hwaccm.s.svm.pMemObjMSRBitmap, 0);
210	/* Set all bits to intercept all MSR accesses. */
211	ASMMemFill32(pVCpu->hwaccm.s.svm.pMSRBitmap, PAGE_SIZE*2, 0xffffffff);
212	}
213
214	return VINF_SUCCESS;
215	}
216
217	/**
218	* Does Ring-0 per VM AMD-V termination.
219	*
220	* @returns VBox status code.
221	* @param pVM The VM to operate on.
222	*/
223	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
224	{
225	for (VMCPUID i = 0; i < pVM->cCpus; i++)
226	{
227	PVMCPU pVCpu = &pVM->aCpus[i];
228
229	if (pVCpu->hwaccm.s.svm.pMemObjVMCBHost != NIL_RTR0MEMOBJ)
230	{
231	RTR0MemObjFree(pVCpu->hwaccm.s.svm.pMemObjVMCBHost, false);
232	pVCpu->hwaccm.s.svm.pVMCBHost = 0;
233	pVCpu->hwaccm.s.svm.pVMCBHostPhys = 0;
234	pVCpu->hwaccm.s.svm.pMemObjVMCBHost = NIL_RTR0MEMOBJ;
235	}
236
237	if (pVCpu->hwaccm.s.svm.pMemObjVMCB != NIL_RTR0MEMOBJ)
238	{
239	RTR0MemObjFree(pVCpu->hwaccm.s.svm.pMemObjVMCB, false);
240	pVCpu->hwaccm.s.svm.pVMCB = 0;
241	pVCpu->hwaccm.s.svm.pVMCBPhys = 0;
242	pVCpu->hwaccm.s.svm.pMemObjVMCB = NIL_RTR0MEMOBJ;
243	}
244	if (pVCpu->hwaccm.s.svm.pMemObjMSRBitmap != NIL_RTR0MEMOBJ)
245	{
246	RTR0MemObjFree(pVCpu->hwaccm.s.svm.pMemObjMSRBitmap, false);
247	pVCpu->hwaccm.s.svm.pMSRBitmap = 0;
248	pVCpu->hwaccm.s.svm.pMSRBitmapPhys = 0;
249	pVCpu->hwaccm.s.svm.pMemObjMSRBitmap = NIL_RTR0MEMOBJ;
250	}
251	}
252	if (pVM->hwaccm.s.svm.pMemObjIOBitmap != NIL_RTR0MEMOBJ)
253	{
254	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjIOBitmap, false);
255	pVM->hwaccm.s.svm.pIOBitmap = 0;
256	pVM->hwaccm.s.svm.pIOBitmapPhys = 0;
257	pVM->hwaccm.s.svm.pMemObjIOBitmap = NIL_RTR0MEMOBJ;
258	}
259	return VINF_SUCCESS;
260	}
261
262	/**
263	* Sets up AMD-V for the specified VM
264	*
265	* @returns VBox status code.
266	* @param pVM The VM to operate on.
267	*/
268	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
269	{
270	int rc = VINF_SUCCESS;
271
272	AssertReturn(pVM, VERR_INVALID_PARAMETER);
273
274	Assert(pVM->hwaccm.s.svm.fSupported);
275
276	for (VMCPUID i = 0; i < pVM->cCpus; i++)
277	{
278	PVMCPU pVCpu = &pVM->aCpus[i];
279	SVM_VMCB pVMCB = (SVM_VMCB )pVM->aCpus[i].hwaccm.s.svm.pVMCB;
280
281	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
282
283	/* Program the control fields. Most of them never have to be changed again. */
284	/* CR0/3/4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
285	/* Note: CR0 & CR4 can be safely read when guest and shadow copies are identical. */
286	if (!pVM->hwaccm.s.fNestedPaging)
287	pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(3) \| RT_BIT(4);
288	else
289	pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(4);
290
291	/*
292	* CR0/3/4 writes must be intercepted for obvious reasons.
293	*/
294	if (!pVM->hwaccm.s.fNestedPaging)
295	pVMCB->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(3) \| RT_BIT(4);
296	else
297	pVMCB->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(4);
298
299	/* Intercept all DRx reads and writes by default. Changed later on. */
300	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
301	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
302
303	/* Currently we don't care about DRx reads or writes. DRx registers are trashed.
304	* All breakpoints are automatically cleared when the VM exits.
305	*/
306
307	pVMCB->ctrl.u32InterceptException = HWACCM_SVM_TRAP_MASK;
308	#ifndef DEBUG
309	if (pVM->hwaccm.s.fNestedPaging)
310	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_PF); /* no longer need to intercept #PF. */
311	#endif
312
313	pVMCB->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR
314	\| SVM_CTRL1_INTERCEPT_VINTR
315	\| SVM_CTRL1_INTERCEPT_NMI
316	\| SVM_CTRL1_INTERCEPT_SMI
317	\| SVM_CTRL1_INTERCEPT_INIT
318	\| SVM_CTRL1_INTERCEPT_RDPMC
319	\| SVM_CTRL1_INTERCEPT_CPUID
320	\| SVM_CTRL1_INTERCEPT_RSM
321	\| SVM_CTRL1_INTERCEPT_HLT
322	\| SVM_CTRL1_INTERCEPT_INOUT_BITMAP
323	\| SVM_CTRL1_INTERCEPT_MSR_SHADOW
324	\| SVM_CTRL1_INTERCEPT_INVLPG
325	\| SVM_CTRL1_INTERCEPT_INVLPGA /* AMD only */
326	\| SVM_CTRL1_INTERCEPT_TASK_SWITCH
327	\| SVM_CTRL1_INTERCEPT_SHUTDOWN /* fatal */
328	\| SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Legacy FPU FERR handling. */
329	;
330	/* With nested paging we don't care about invlpg anymore. */
331	if (pVM->hwaccm.s.fNestedPaging)
332	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_INVLPG;
333
334	pVMCB->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* required */
335	\| SVM_CTRL2_INTERCEPT_VMMCALL
336	\| SVM_CTRL2_INTERCEPT_VMLOAD
337	\| SVM_CTRL2_INTERCEPT_VMSAVE
338	\| SVM_CTRL2_INTERCEPT_STGI
339	\| SVM_CTRL2_INTERCEPT_CLGI
340	\| SVM_CTRL2_INTERCEPT_SKINIT
341	\| SVM_CTRL2_INTERCEPT_WBINVD
342	\| SVM_CTRL2_INTERCEPT_MONITOR
343	\| SVM_CTRL2_INTERCEPT_MWAIT_UNCOND; /* don't execute mwait or else we'll idle inside the guest (host thinks the cpu load is high) */
344	;
345	Log(("pVMCB->ctrl.u32InterceptException = %x\n", pVMCB->ctrl.u32InterceptException));
346	Log(("pVMCB->ctrl.u32InterceptCtrl1 = %x\n", pVMCB->ctrl.u32InterceptCtrl1));
347	Log(("pVMCB->ctrl.u32InterceptCtrl2 = %x\n", pVMCB->ctrl.u32InterceptCtrl2));
348
349	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
350	pVMCB->ctrl.IntCtrl.n.u1VIrqMasking = 1;
351	/* Ignore the priority in the TPR; just deliver it when we tell it to. */
352	pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
353
354	/* Set IO and MSR bitmap addresses. */
355	pVMCB->ctrl.u64IOPMPhysAddr = pVM->hwaccm.s.svm.pIOBitmapPhys;
356	pVMCB->ctrl.u64MSRPMPhysAddr = pVCpu->hwaccm.s.svm.pMSRBitmapPhys;
357
358	/* No LBR virtualization. */
359	pVMCB->ctrl.u64LBRVirt = 0;
360
361	/** The ASID must start at 1; the host uses 0. */
362	pVMCB->ctrl.TLBCtrl.n.u32ASID = 1;
363
364	/** Setup the PAT msr (nested paging only) */
365	/* The default value should be 0x0007040600070406ULL, but we want to treat all guest memory as WB, so choose type 6 for all PAT slots. */
366	pVMCB->guest.u64GPAT = 0x0006060606060606ULL;
367
368	/* The following MSRs are saved automatically by vmload/vmsave, so we allow the guest
369	* to modify them directly.
370	*/
371	svmR0SetMSRPermission(pVCpu, MSR_K8_LSTAR, true, true);
372	svmR0SetMSRPermission(pVCpu, MSR_K8_CSTAR, true, true);
373	svmR0SetMSRPermission(pVCpu, MSR_K6_STAR, true, true);
374	svmR0SetMSRPermission(pVCpu, MSR_K8_SF_MASK, true, true);
375	svmR0SetMSRPermission(pVCpu, MSR_K8_FS_BASE, true, true);
376	svmR0SetMSRPermission(pVCpu, MSR_K8_GS_BASE, true, true);
377	svmR0SetMSRPermission(pVCpu, MSR_K8_KERNEL_GS_BASE, true, true);
378	svmR0SetMSRPermission(pVCpu, MSR_IA32_SYSENTER_CS, true, true);
379	svmR0SetMSRPermission(pVCpu, MSR_IA32_SYSENTER_ESP, true, true);
380	svmR0SetMSRPermission(pVCpu, MSR_IA32_SYSENTER_EIP, true, true);
381	}
382
383	return rc;
384	}
385
386
387	/**
388	* Sets the permission bits for the specified MSR
389	*
390	* @param pVCpu The VMCPU to operate on.
391	* @param ulMSR MSR value
392	* @param fRead Reading allowed/disallowed
393	* @param fWrite Writing allowed/disallowed
394	*/
395	static void svmR0SetMSRPermission(PVMCPU pVCpu, unsigned ulMSR, bool fRead, bool fWrite)
396	{
397	unsigned ulBit;
398	uint8_t pMSRBitmap = (uint8_t )pVCpu->hwaccm.s.svm.pMSRBitmap;
399
400	if (ulMSR <= 0x00001FFF)
401	{
402	/* Pentium-compatible MSRs */
403	ulBit = ulMSR * 2;
404	}
405	else
406	if ( ulMSR >= 0xC0000000
407	&& ulMSR <= 0xC0001FFF)
408	{
409	/* AMD Sixth Generation x86 Processor MSRs and SYSCALL */
410	ulBit = (ulMSR - 0xC0000000) * 2;
411	pMSRBitmap += 0x800;
412	}
413	else
414	if ( ulMSR >= 0xC0010000
415	&& ulMSR <= 0xC0011FFF)
416	{
417	/* AMD Seventh and Eighth Generation Processor MSRs */
418	ulBit = (ulMSR - 0xC0001000) * 2;
419	pMSRBitmap += 0x1000;
420	}
421	else
422	{
423	AssertFailed();
424	return;
425	}
426	Assert(ulBit < 16 * 1024 - 1);
427	if (fRead)
428	ASMBitClear(pMSRBitmap, ulBit);
429	else
430	ASMBitSet(pMSRBitmap, ulBit);
431
432	if (fWrite)
433	ASMBitClear(pMSRBitmap, ulBit + 1);
434	else
435	ASMBitSet(pMSRBitmap, ulBit + 1);
436	}
437
438	/**
439	* Injects an event (trap or external interrupt)
440	*
441	* @param pVCpu The VMCPU to operate on.
442	* @param pVMCB SVM control block
443	* @param pCtx CPU Context
444	* @param pIntInfo SVM interrupt info
445	*/
446	inline void SVMR0InjectEvent(PVMCPU pVCpu, SVM_VMCB pVMCB, CPUMCTX pCtx, SVM_EVENT* pEvent)
447	{
448	#ifdef VBOX_WITH_STATISTICS
449	STAM_COUNTER_INC(&pVCpu->hwaccm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
450	#endif
451
452	#ifdef VBOX_STRICT
453	if (pEvent->n.u8Vector == 0xE)
454	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]));
455	else
456	if (pEvent->n.u8Vector < 0x20)
457	Log(("SVM: Inject int %d at %RGv error code=%08x\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip, pEvent->n.u32ErrorCode));
458	else
459	{
460	Log(("INJ-EI: %x at %RGv\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip));
461	Assert(!VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS));
462	Assert(pCtx->eflags.u32 & X86_EFL_IF);
463	}
464	#endif
465
466	/* Set event injection state. */
467	pVMCB->ctrl.EventInject.au64[0] = pEvent->au64[0];
468	}
469
470
471	/**
472	* Checks for pending guest interrupts and injects them
473	*
474	* @returns VBox status code.
475	* @param pVM The VM to operate on.
476	* @param pVCpu The VM CPU to operate on.
477	* @param pVMCB SVM control block
478	* @param pCtx CPU Context
479	*/
480	static int SVMR0CheckPendingInterrupt(PVM pVM, PVMCPU pVCpu, SVM_VMCB pVMCB, CPUMCTX pCtx)
481	{
482	int rc;
483
484	/* Dispatch any pending interrupts. (injected before, but a VM exit occurred prematurely) */
485	if (pVCpu->hwaccm.s.Event.fPending)
486	{
487	SVM_EVENT Event;
488
489	Log(("Reinjecting event %08x %08x at %RGv\n", pVCpu->hwaccm.s.Event.intInfo, pVCpu->hwaccm.s.Event.errCode, (RTGCPTR)pCtx->rip));
490	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntReinject);
491	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
492	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
493
494	pVCpu->hwaccm.s.Event.fPending = false;
495	return VINF_SUCCESS;
496	}
497
498	/* If an active trap is already pending, then we must forward it first! */
499	if (!TRPMHasTrap(pVCpu))
500	{
501	if (VMCPU_FF_TESTANDCLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI))
502	{
503	SVM_EVENT Event;
504
505	Log(("CPU%d: injecting #NMI\n", pVCpu->idCpu));
506	Event.n.u8Vector = X86_XCPT_NMI;
507	Event.n.u1Valid = 1;
508	Event.n.u32ErrorCode = 0;
509	Event.n.u3Type = SVM_EVENT_NMI;
510
511	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
512	return VINF_SUCCESS;
513	}
514
515	/* @todo SMI interrupts. */
516
517	/* When external interrupts are pending, we should exit the VM when IF is set. */
518	if (VMCPU_FF_ISPENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC\|VMCPU_FF_INTERRUPT_PIC)))
519	{
520	if ( !(pCtx->eflags.u32 & X86_EFL_IF)
521	\|\| VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
522	{
523	if (!pVMCB->ctrl.IntCtrl.n.u1VIrqValid)
524	{
525	if (!VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
526	LogFlow(("Enable irq window exit!\n"));
527	else
528	Log(("Pending interrupt blocked at %RGv by VM_FF_INHIBIT_INTERRUPTS -> irq window exit\n", (RTGCPTR)pCtx->rip));
529
530	/** @todo use virtual interrupt method to inject a pending irq; dispatched as soon as guest.IF is set. */
531	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
532	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 1;
533	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0; /* don't care */
534	}
535	}
536	else
537	{
538	uint8_t u8Interrupt;
539
540	rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
541	Log(("Dispatch interrupt: u8Interrupt=%x (%d) rc=%Rrc\n", u8Interrupt, u8Interrupt, rc));
542	if (RT_SUCCESS(rc))
543	{
544	rc = TRPMAssertTrap(pVCpu, u8Interrupt, TRPM_HARDWARE_INT);
545	AssertRC(rc);
546	}
547	else
548	{
549	/* Can only happen in rare cases where a pending interrupt is cleared behind our back */
550	Assert(!VMCPU_FF_ISPENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC\|VMCPU_FF_INTERRUPT_PIC)));
551	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchGuestIrq);
552	/* Just continue */
553	}
554	}
555	}
556	}
557
558	#ifdef VBOX_STRICT
559	if (TRPMHasTrap(pVCpu))
560	{
561	uint8_t u8Vector;
562	rc = TRPMQueryTrapAll(pVCpu, &u8Vector, 0, 0, 0);
563	AssertRC(rc);
564	}
565	#endif
566
567	if ( (pCtx->eflags.u32 & X86_EFL_IF)
568	&& (!VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
569	&& TRPMHasTrap(pVCpu)
570	)
571	{
572	uint8_t u8Vector;
573	TRPMEVENT enmType;
574	SVM_EVENT Event;
575	RTGCUINT u32ErrorCode;
576
577	Event.au64[0] = 0;
578
579	/* If a new event is pending, then dispatch it now. */
580	rc = TRPMQueryTrapAll(pVCpu, &u8Vector, &enmType, &u32ErrorCode, 0);
581	AssertRC(rc);
582	Assert(pCtx->eflags.Bits.u1IF == 1 \|\| enmType == TRPM_TRAP);
583	Assert(enmType != TRPM_SOFTWARE_INT);
584
585	/* Clear the pending trap. */
586	rc = TRPMResetTrap(pVCpu);
587	AssertRC(rc);
588
589	Event.n.u8Vector = u8Vector;
590	Event.n.u1Valid = 1;
591	Event.n.u32ErrorCode = u32ErrorCode;
592
593	if (enmType == TRPM_TRAP)
594	{
595	switch (u8Vector) {
596	case 8:
597	case 10:
598	case 11:
599	case 12:
600	case 13:
601	case 14:
602	case 17:
603	/* Valid error codes. */
604	Event.n.u1ErrorCodeValid = 1;
605	break;
606	default:
607	break;
608	}
609	if (u8Vector == X86_XCPT_NMI)
610	Event.n.u3Type = SVM_EVENT_NMI;
611	else
612	Event.n.u3Type = SVM_EVENT_EXCEPTION;
613	}
614	else
615	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
616
617	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntInject);
618	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
619	} /* if (interrupts can be dispatched) */
620
621	return VINF_SUCCESS;
622	}
623
624	/**
625	* Save the host state
626	*
627	* @returns VBox status code.
628	* @param pVM The VM to operate on.
629	* @param pVCpu The VM CPU to operate on.
630	*/
631	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
632	{
633	NOREF(pVM);
634	NOREF(pVCpu);
635	/* Nothing to do here. */
636	return VINF_SUCCESS;
637	}
638
639	/**
640	* Loads the guest state
641	*
642	* NOTE: Don't do anything here that can cause a jump back to ring 3!!!!!
643	*
644	* @returns VBox status code.
645	* @param pVM The VM to operate on.
646	* @param pVCpu The VM CPU to operate on.
647	* @param pCtx Guest context
648	*/
649	VMMR0DECL(int) SVMR0LoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
650	{
651	RTGCUINTPTR val;
652	SVM_VMCB *pVMCB;
653
654	if (pVM == NULL)
655	return VERR_INVALID_PARAMETER;
656
657	/* Setup AMD SVM. */
658	Assert(pVM->hwaccm.s.svm.fSupported);
659
660	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
661	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
662
663	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
664	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SEGMENT_REGS)
665	{
666	SVM_WRITE_SELREG(CS, cs);
667	SVM_WRITE_SELREG(SS, ss);
668	SVM_WRITE_SELREG(DS, ds);
669	SVM_WRITE_SELREG(ES, es);
670	SVM_WRITE_SELREG(FS, fs);
671	SVM_WRITE_SELREG(GS, gs);
672	}
673
674	/* Guest CPU context: LDTR. */
675	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_LDTR)
676	{
677	SVM_WRITE_SELREG(LDTR, ldtr);
678	}
679
680	/* Guest CPU context: TR. */
681	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_TR)
682	{
683	SVM_WRITE_SELREG(TR, tr);
684	}
685
686	/* Guest CPU context: GDTR. */
687	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_GDTR)
688	{
689	pVMCB->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
690	pVMCB->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
691	}
692
693	/* Guest CPU context: IDTR. */
694	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_IDTR)
695	{
696	pVMCB->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
697	pVMCB->guest.IDTR.u64Base = pCtx->idtr.pIdt;
698	}
699
700	/*
701	* Sysenter MSRs (unconditional)
702	*/
703	pVMCB->guest.u64SysEnterCS = pCtx->SysEnter.cs;
704	pVMCB->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
705	pVMCB->guest.u64SysEnterESP = pCtx->SysEnter.esp;
706
707	/* Control registers */
708	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR0)
709	{
710	val = pCtx->cr0;
711	if (!CPUMIsGuestFPUStateActive(pVCpu))
712	{
713	/* Always use #NM exceptions to load the FPU/XMM state on demand. */
714	val \|= X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
715	}
716	else
717	{
718	/** @todo check if we support the old style mess correctly. */
719	if (!(val & X86_CR0_NE))
720	{
721	Log(("Forcing X86_CR0_NE!!!\n"));
722
723	/* Also catch floating point exceptions as we need to report them to the guest in a different way. */
724	if (!pVCpu->hwaccm.s.fFPUOldStyleOverride)
725	{
726	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_MF);
727	pVCpu->hwaccm.s.fFPUOldStyleOverride = true;
728	}
729	}
730	val \|= X86_CR0_NE; /* always turn on the native mechanism to report FPU errors (old style uses interrupts) */
731	}
732	/* Always enable caching. */
733	val &= ~(X86_CR0_CD\|X86_CR0_NW);
734
735	/* Note: WP is not relevant in nested paging mode as we catch accesses on the (guest) physical level. */
736	/* Note: In nested paging mode the guest is allowed to run with paging disabled; the guest physical to host physical translation will remain active. */
737	if (!pVM->hwaccm.s.fNestedPaging)
738	{
739	val \|= X86_CR0_PG; /* Paging is always enabled; even when the guest is running in real mode or PE without paging. */
740	val \|= X86_CR0_WP; /* Must set this as we rely on protecting various pages and supervisor writes must be caught. */
741	}
742	pVMCB->guest.u64CR0 = val;
743	}
744	/* CR2 as well */
745	pVMCB->guest.u64CR2 = pCtx->cr2;
746
747	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR3)
748	{
749	/* Save our shadow CR3 register. */
750	if (pVM->hwaccm.s.fNestedPaging)
751	{
752	PGMMODE enmShwPagingMode;
753
754	#if HC_ARCH_BITS == 32
755	if (CPUMIsGuestInLongModeEx(pCtx))
756	enmShwPagingMode = PGMMODE_AMD64_NX;
757	else
758	#endif
759	enmShwPagingMode = PGMGetHostMode(pVM);
760
761	pVMCB->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
762	Assert(pVMCB->ctrl.u64NestedPagingCR3);
763	pVMCB->guest.u64CR3 = pCtx->cr3;
764	}
765	else
766	{
767	pVMCB->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
768	Assert(pVMCB->guest.u64CR3 \|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL));
769	}
770	}
771
772	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR4)
773	{
774	val = pCtx->cr4;
775	if (!pVM->hwaccm.s.fNestedPaging)
776	{
777	switch(pVCpu->hwaccm.s.enmShadowMode)
778	{
779	case PGMMODE_REAL:
780	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
781	AssertFailed();
782	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
783
784	case PGMMODE_32_BIT: /* 32-bit paging. */
785	val &= ~X86_CR4_PAE;
786	break;
787
788	case PGMMODE_PAE: /* PAE paging. */
789	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
790	/** Must use PAE paging as we could use physical memory > 4 GB */
791	val \|= X86_CR4_PAE;
792	break;
793
794	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
795	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
796	#ifdef VBOX_ENABLE_64_BITS_GUESTS
797	break;
798	#else
799	AssertFailed();
800	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
801	#endif
802
803	default: /* shut up gcc */
804	AssertFailed();
805	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
806	}
807	}
808	pVMCB->guest.u64CR4 = val;
809	}
810
811	/* Debug registers. */
812	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_DEBUG)
813	{
814	pCtx->dr[6] \|= X86_DR6_INIT_VAL; /* set all reserved bits to 1. */
815	pCtx->dr[6] &= ~RT_BIT(12); /* must be zero. */
816
817	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
818	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
819	pCtx->dr[7] \|= 0x400; /* must be one */
820
821	pVMCB->guest.u64DR7 = pCtx->dr[7];
822	pVMCB->guest.u64DR6 = pCtx->dr[6];
823
824	#ifdef DEBUG
825	/* Sync the hypervisor debug state now if any breakpoint is armed. */
826	if ( CPUMGetHyperDR7(pVCpu) & (X86_DR7_ENABLED_MASK\|X86_DR7_GD)
827	&& !CPUMIsHyperDebugStateActive(pVCpu)
828	&& !DBGFIsStepping(pVCpu))
829	{
830	/* Save the host and load the hypervisor debug state. */
831	int rc = CPUMR0LoadHyperDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
832	AssertRC(rc);
833
834	/* DRx intercepts remain enabled. */
835
836	/* Override dr6 & dr7 with the hypervisor values. */
837	pVMCB->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
838	pVMCB->guest.u64DR6 = CPUMGetHyperDR6(pVCpu);
839	}
840	else
841	#endif
842	/* Sync the debug state now if any breakpoint is armed. */
843	if ( (pCtx->dr[7] & (X86_DR7_ENABLED_MASK\|X86_DR7_GD))
844	&& !CPUMIsGuestDebugStateActive(pVCpu)
845	&& !DBGFIsStepping(pVCpu))
846	{
847	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxArmed);
848
849	/* Disable drx move intercepts. */
850	pVMCB->ctrl.u16InterceptRdDRx = 0;
851	pVMCB->ctrl.u16InterceptWrDRx = 0;
852
853	/* Save the host and load the guest debug state. */
854	int rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
855	AssertRC(rc);
856	}
857	}
858
859	/* EIP, ESP and EFLAGS */
860	pVMCB->guest.u64RIP = pCtx->rip;
861	pVMCB->guest.u64RSP = pCtx->rsp;
862	pVMCB->guest.u64RFlags = pCtx->eflags.u32;
863
864	/* Set CPL */
865	pVMCB->guest.u8CPL = pCtx->csHid.Attr.n.u2Dpl;
866
867	/* RAX/EAX too, as VMRUN uses RAX as an implicit parameter. */
868	pVMCB->guest.u64RAX = pCtx->rax;
869
870	/* vmrun will fail without MSR_K6_EFER_SVME. */
871	pVMCB->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
872
873	/* 64 bits guest mode? */
874	if (CPUMIsGuestInLongModeEx(pCtx))
875	{
876	#if !defined(VBOX_ENABLE_64_BITS_GUESTS)
877	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
878	#elif HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
879	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
880	#else
881	# ifdef VBOX_WITH_HYBRID_32BIT_KERNEL
882	if (!pVM->hwaccm.s.fAllow64BitGuests)
883	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
884	# endif
885	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMRun64;
886	#endif
887	/* Unconditionally update these as wrmsr might have changed them. (HWACCM_CHANGED_GUEST_SEGMENT_REGS will not be set) */
888	pVMCB->guest.FS.u64Base = pCtx->fsHid.u64Base;
889	pVMCB->guest.GS.u64Base = pCtx->gsHid.u64Base;
890	}
891	else
892	{
893	/* Filter out the MSR_K6_LME bit or else AMD-V expects amd64 shadow paging. */
894	pVMCB->guest.u64EFER &= ~MSR_K6_EFER_LME;
895
896	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMRun;
897	}
898
899	/* TSC offset. */
900	if (TMCpuTickCanUseRealTSC(pVCpu, &pVMCB->ctrl.u64TSCOffset))
901	{
902	uint64_t u64CurTSC = ASMReadTSC();
903	if (u64CurTSC + pVMCB->ctrl.u64TSCOffset >= TMCpuTickGetLastSeen(pVCpu))
904	{
905	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
906	pVMCB->ctrl.u32InterceptCtrl2 &= ~SVM_CTRL2_INTERCEPT_RDTSCP;
907	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCOffset);
908	}
909	else
910	{
911	/* Fall back to rdtsc emulation as we would otherwise pass decreasing tsc values to the guest. */
912	LogFlow(("TSC %RX64 offset %RX64 time=%RX64 last=%RX64 (diff=%RX64, virt_tsc=%RX64)\n", u64CurTSC, pVMCB->ctrl.u64TSCOffset, u64CurTSC + pVMCB->ctrl.u64TSCOffset, TMCpuTickGetLastSeen(pVCpu), TMCpuTickGetLastSeen(pVCpu) - u64CurTSC - pVMCB->ctrl.u64TSCOffset, TMCpuTickGet(pVCpu)));
913	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
914	pVMCB->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
915	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCInterceptOverFlow);
916	}
917	}
918	else
919	{
920	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
921	pVMCB->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
922	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCIntercept);
923	}
924
925	/* Sync the various msrs for 64 bits mode. */
926	pVMCB->guest.u64STAR = pCtx->msrSTAR; /* legacy syscall eip, cs & ss */
927	pVMCB->guest.u64LSTAR = pCtx->msrLSTAR; /* 64 bits mode syscall rip */
928	pVMCB->guest.u64CSTAR = pCtx->msrCSTAR; /* compatibility mode syscall rip */
929	pVMCB->guest.u64SFMASK = pCtx->msrSFMASK; /* syscall flag mask */
930	pVMCB->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE; /* swapgs exchange value */
931
932	#ifdef DEBUG
933	/* Intercept X86_XCPT_DB if stepping is enabled */
934	if ( DBGFIsStepping(pVCpu)
935	\|\| CPUMIsHyperDebugStateActive(pVCpu))
936	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_DB);
937	else
938	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_DB);
939	#endif
940
941	/* Done. */
942	pVCpu->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_ALL_GUEST;
943
944	return VINF_SUCCESS;
945	}
946
947
948	/**
949	* Runs guest code in an AMD-V VM.
950	*
951	* @returns VBox status code.
952	* @param pVM The VM to operate on.
953	* @param pVCpu The VM CPU to operate on.
954	* @param pCtx Guest context
955	*/
956	VMMR0DECL(int) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
957	{
958	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatEntry, x);
959	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hwaccm.s.StatExit1);
960	STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hwaccm.s.StatExit2);
961
962	VBOXSTRICTRC rc = VINF_SUCCESS;
963	int rc2;
964	uint64_t exitCode = (uint64_t)SVM_EXIT_INVALID;
965	SVM_VMCB *pVMCB;
966	bool fSyncTPR = false;
967	unsigned cResume = 0;
968	uint8_t u8LastTPR;
969	PHMGLOBLCPUINFO pCpu = 0;
970	RTCCUINTREG uOldEFlags = ~(RTCCUINTREG)0;
971	#ifdef VBOX_STRICT
972	RTCPUID idCpuCheck;
973	#endif
974	#ifdef VBOX_HIGH_RES_TIMERS_HACK_IN_RING0
975	uint64_t u64LastTime = RTTimeMilliTS();
976	#endif
977
978	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
979	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
980
981	/* We can jump to this point to resume execution after determining that a VM-exit is innocent.
982	*/
983	ResumeExecution:
984	if (!STAM_PROFILE_ADV_IS_RUNNING(&pVCpu->hwaccm.s.StatEntry))
985	STAM_PROFILE_ADV_STOP_START(&pVCpu->hwaccm.s.StatExit2, &pVCpu->hwaccm.s.StatEntry, x);
986	Assert(!HWACCMR0SuspendPending());
987
988	/* Safety precaution; looping for too long here can have a very bad effect on the host */
989	if (RT_UNLIKELY(++cResume > pVM->hwaccm.s.cMaxResumeLoops))
990	{
991	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitMaxResume);
992	rc = VINF_EM_RAW_INTERRUPT;
993	goto end;
994	}
995
996	/* Check for irq inhibition due to instruction fusing (sti, mov ss). */
997	if (VMCPU_FF_ISSET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
998	{
999	Log(("VM_FF_INHIBIT_INTERRUPTS at %RGv successor %RGv\n", (RTGCPTR)pCtx->rip, EMGetInhibitInterruptsPC(pVCpu)));
1000	if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
1001	{
1002	/* Note: we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here.
1003	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
1004	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
1005	* break the guest. Sounds very unlikely, but such timing sensitive problems are not as rare as you might think.
1006	*/
1007	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
1008	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
1009	pVMCB->ctrl.u64IntShadow = 0;
1010	}
1011	}
1012	else
1013	{
1014	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
1015	pVMCB->ctrl.u64IntShadow = 0;
1016	}
1017
1018	#ifdef VBOX_HIGH_RES_TIMERS_HACK_IN_RING0
1019	if (RT_UNLIKELY((cResume & 0xf) == 0))
1020	{
1021	uint64_t u64CurTime = RTTimeMilliTS();
1022
1023	if (RT_UNLIKELY(u64CurTime > u64LastTime))
1024	{
1025	u64LastTime = u64CurTime;
1026	TMTimerPollVoid(pVM, pVCpu);
1027	}
1028	}
1029	#endif
1030
1031	/* Check for pending actions that force us to go back to ring 3. */
1032	if ( VM_FF_ISPENDING(pVM, VM_FF_HWACCM_TO_R3_MASK \| VM_FF_REQUEST \| VM_FF_PGM_POOL_FLUSH_PENDING \| VM_FF_PDM_DMA)
1033	\|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_HWACCM_TO_R3_MASK \| VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL \| VMCPU_FF_REQUEST))
1034	{
1035	/* Check if a sync operation is pending. */
1036	if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
1037	{
1038	rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
1039	AssertRC(VBOXSTRICTRC_VAL(rc));
1040	if (rc != VINF_SUCCESS)
1041	{
1042	Log(("Pending pool sync is forcing us back to ring 3; rc=%d\n", VBOXSTRICTRC_VAL(rc)));
1043	goto end;
1044	}
1045	}
1046
1047	#ifdef DEBUG
1048	/* Intercept X86_XCPT_DB if stepping is enabled */
1049	if (!DBGFIsStepping(pVCpu))
1050	#endif
1051	{
1052	if ( VM_FF_ISPENDING(pVM, VM_FF_HWACCM_TO_R3_MASK)
1053	\|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_HWACCM_TO_R3_MASK))
1054	{
1055	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchToR3);
1056	rc = RT_UNLIKELY(VM_FF_ISPENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
1057	goto end;
1058	}
1059	}
1060
1061	/* Pending request packets might contain actions that need immediate attention, such as pending hardware interrupts. */
1062	if ( VM_FF_ISPENDING(pVM, VM_FF_REQUEST)
1063	\|\| VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_REQUEST))
1064	{
1065	rc = VINF_EM_PENDING_REQUEST;
1066	goto end;
1067	}
1068
1069	/* Check if a pgm pool flush is in progress. */
1070	if (VM_FF_ISPENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
1071	{
1072	rc = VINF_PGM_POOL_FLUSH_PENDING;
1073	goto end;
1074	}
1075
1076	/* Check if DMA work is pending (2nd+ run). */
1077	if (VM_FF_ISPENDING(pVM, VM_FF_PDM_DMA) && cResume > 1)
1078	{
1079	rc = VINF_EM_RAW_TO_R3;
1080	goto end;
1081	}
1082	}
1083
1084	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
1085	/*
1086	* Exit to ring-3 preemption/work is pending.
1087	*
1088	* Interrupts are disabled before the call to make sure we don't miss any interrupt
1089	* that would flag preemption (IPI, timer tick, ++). (Would've been nice to do this
1090	* further down, but SVMR0CheckPendingInterrupt makes that impossible.)
1091	*
1092	* Note! Interrupts must be disabled done before we check for TLB flushes; TLB
1093	* shootdowns rely on this.
1094	*/
1095	uOldEFlags = ASMIntDisableFlags();
1096	if (RTThreadPreemptIsPending(NIL_RTTHREAD))
1097	{
1098	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitPreemptPending);
1099	rc = VINF_EM_RAW_INTERRUPT;
1100	goto end;
1101	}
1102	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
1103	#endif
1104
1105	/* When external interrupts are pending, we should exit the VM when IF is set. */
1106	/* Note! After VM_FF_INHIBIT_INTERRUPTS check!!! */
1107	rc = SVMR0CheckPendingInterrupt(pVM, pVCpu, pVMCB, pCtx);
1108	if (RT_FAILURE(rc))
1109	goto end;
1110
1111	/* TPR caching using CR8 is only available in 64 bits mode or with 32 bits guests when X86_CPUID_AMD_FEATURE_ECX_CR8L is supported. */
1112	/* Note: we can't do this in LoadGuestState as PDMApicGetTPR can jump back to ring 3 (lock)!!!!!!!! (no longer true)
1113	* @todo query and update the TPR only when it could have been changed (mmio access)
1114	*/
1115	if (pVM->hwaccm.s.fHasIoApic)
1116	{
1117	bool fPending;
1118
1119	/* TPR caching in CR8 */
1120	rc2 = PDMApicGetTPR(pVCpu, &u8LastTPR, &fPending);
1121	AssertRC(rc2);
1122
1123	if (pVM->hwaccm.s.fTPRPatchingActive)
1124	{
1125	/* Our patch code uses LSTAR for TPR caching. */
1126	pCtx->msrLSTAR = u8LastTPR;
1127
1128	if (fPending)
1129	{
1130	/* A TPR change could activate a pending interrupt, so catch lstar writes. */
1131	svmR0SetMSRPermission(pVCpu, MSR_K8_LSTAR, true, false);
1132	}
1133	else
1134	/* No interrupts are pending, so we don't need to be explicitely notified.
1135	* There are enough world switches for detecting pending interrupts.
1136	*/
1137	svmR0SetMSRPermission(pVCpu, MSR_K8_LSTAR, true, true);
1138	}
1139	else
1140	{
1141	pVMCB->ctrl.IntCtrl.n.u8VTPR = (u8LastTPR >> 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */
1142
1143	if (fPending)
1144	{
1145	/* A TPR change could activate a pending interrupt, so catch cr8 writes. */
1146	pVMCB->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
1147	}
1148	else
1149	/* No interrupts are pending, so we don't need to be explicitely notified.
1150	* There are enough world switches for detecting pending interrupts.
1151	*/
1152	pVMCB->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
1153	}
1154	fSyncTPR = !fPending;
1155	}
1156
1157	/* All done! Let's start VM execution. */
1158
1159	/* Enable nested paging if necessary (disabled each time after #VMEXIT). */
1160	pVMCB->ctrl.NestedPaging.n.u1NestedPaging = pVM->hwaccm.s.fNestedPaging;
1161
1162	#ifdef LOG_ENABLED
1163	pCpu = HWACCMR0GetCurrentCpu();
1164	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
1165	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
1166	{
1167	if (pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu)
1168	LogFlow(("Force TLB flush due to rescheduling to a different cpu (%d vs %d)\n", pVCpu->hwaccm.s.idLastCpu, pCpu->idCpu));
1169	else
1170	LogFlow(("Force TLB flush due to changed TLB flush count (%x vs %x)\n", pVCpu->hwaccm.s.cTLBFlushes, pCpu->cTLBFlushes));
1171	}
1172	if (pCpu->fFlushTLB)
1173	LogFlow(("Force TLB flush: first time cpu %d is used -> flush\n", pCpu->idCpu));
1174	#endif
1175
1176	/*
1177	* NOTE: DO NOT DO ANYTHING AFTER THIS POINT THAT MIGHT JUMP BACK TO RING 3!
1178	* (until the actual world switch)
1179	*/
1180	#ifdef VBOX_STRICT
1181	idCpuCheck = RTMpCpuId();
1182	#endif
1183	VMMR0LogFlushDisable(pVCpu);
1184
1185	/* Load the guest state; must be here as it sets up the shadow cr0 for lazy fpu syncing! */
1186	rc = SVMR0LoadGuestState(pVM, pVCpu, pCtx);
1187	if (RT_UNLIKELY(rc != VINF_SUCCESS))
1188	{
1189	VMMR0LogFlushEnable(pVCpu);
1190	goto end;
1191	}
1192
1193	#ifndef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
1194	/* Disable interrupts to make sure a poke will interrupt execution.
1195	* This must be done before we check for TLB flushes; TLB shootdowns rely on this.
1196	*/
1197	uOldEFlags = ASMIntDisableFlags();
1198	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
1199	#endif
1200	STAM_PROFILE_ADV_STOP_START(&pVCpu->hwaccm.s.StatEntry, &pVCpu->hwaccm.s.StatInGC, x);
1201
1202	pCpu = HWACCMR0GetCurrentCpu();
1203	/* Force a TLB flush for the first world switch if the current cpu differs from the one we ran on last. */
1204	/* Note that this can happen both for start and resume due to long jumps back to ring 3. */
1205	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
1206	/* 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. */
1207	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
1208	{
1209	/* Force a TLB flush on VM entry. */
1210	pVCpu->hwaccm.s.fForceTLBFlush = true;
1211	}
1212	else
1213	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
1214
1215	pVCpu->hwaccm.s.idLastCpu = pCpu->idCpu;
1216
1217	/* Set TLB flush state as checked until we return from the world switch. */
1218	ASMAtomicWriteBool(&pVCpu->hwaccm.s.fCheckedTLBFlush, true);
1219
1220	/* Check for tlb shootdown flushes. */
1221	if (VMCPU_FF_TESTANDCLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
1222	pVCpu->hwaccm.s.fForceTLBFlush = true;
1223
1224	/* Make sure we flush the TLB when required. Switch ASID to achieve the
1225	same thing, but without actually flushing the whole TLB (which is
1226	expensive). */
1227	if ( pVCpu->hwaccm.s.fForceTLBFlush
1228	&& !pVM->hwaccm.s.svm.fAlwaysFlushTLB)
1229	{
1230	if ( ++pCpu->uCurrentASID >= pVM->hwaccm.s.uMaxASID
1231	\|\| pCpu->fFlushTLB)
1232	{
1233	pCpu->fFlushTLB = false;
1234	pCpu->uCurrentASID = 1; /* start at 1; host uses 0 */
1235	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = 1; /* wrap around; flush TLB */
1236	pCpu->cTLBFlushes++;
1237	}
1238	else
1239	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushASID);
1240
1241	pVCpu->hwaccm.s.cTLBFlushes = pCpu->cTLBFlushes;
1242	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID;
1243	}
1244	else
1245	{
1246	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
1247
1248	/* We never increase uCurrentASID in the fAlwaysFlushTLB (erratum 170) case. */
1249	if (!pCpu->uCurrentASID \|\| !pVCpu->hwaccm.s.uCurrentASID)
1250	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID = 1;
1251
1252	Assert(!pVM->hwaccm.s.svm.fAlwaysFlushTLB \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1253	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = pVCpu->hwaccm.s.fForceTLBFlush;
1254
1255	if ( !pVM->hwaccm.s.svm.fAlwaysFlushTLB
1256	&& VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TLB_SHOOTDOWN))
1257	{
1258	/* Deal with pending TLB shootdown actions which were queued when we were not executing code. */
1259	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTlbShootdown);
1260	for (unsigned i=0;i<pVCpu->hwaccm.s.TlbShootdown.cPages;i++)
1261	SVMR0InvlpgA(pVCpu->hwaccm.s.TlbShootdown.aPages[i], pVMCB->ctrl.TLBCtrl.n.u32ASID);
1262	}
1263	}
1264	pVCpu->hwaccm.s.TlbShootdown.cPages = 0;
1265	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TLB_SHOOTDOWN);
1266
1267	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));
1268	AssertMsg(pCpu->uCurrentASID >= 1 && pCpu->uCurrentASID < pVM->hwaccm.s.uMaxASID, ("cpu%d uCurrentASID = %x\n", pCpu->idCpu, pCpu->uCurrentASID));
1269	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));
1270	pVMCB->ctrl.TLBCtrl.n.u32ASID = pVCpu->hwaccm.s.uCurrentASID;
1271
1272	#ifdef VBOX_WITH_STATISTICS
1273	if (pVMCB->ctrl.TLBCtrl.n.u1TLBFlush)
1274	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBWorldSwitch);
1275	else
1276	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatNoFlushTLBWorldSwitch);
1277	#endif
1278
1279	/* In case we execute a goto ResumeExecution later on. */
1280	pVCpu->hwaccm.s.fResumeVM = true;
1281	pVCpu->hwaccm.s.fForceTLBFlush = pVM->hwaccm.s.svm.fAlwaysFlushTLB;
1282
1283	Assert(sizeof(pVCpu->hwaccm.s.svm.pVMCBPhys) == 8);
1284	Assert(pVMCB->ctrl.IntCtrl.n.u1VIrqMasking);
1285	Assert(pVMCB->ctrl.u64IOPMPhysAddr == pVM->hwaccm.s.svm.pIOBitmapPhys);
1286	Assert(pVMCB->ctrl.u64MSRPMPhysAddr == pVCpu->hwaccm.s.svm.pMSRBitmapPhys);
1287	Assert(pVMCB->ctrl.u64LBRVirt == 0);
1288
1289	#ifdef VBOX_STRICT
1290	Assert(idCpuCheck == RTMpCpuId());
1291	#endif
1292	TMNotifyStartOfExecution(pVCpu);
1293	#ifdef VBOX_WITH_KERNEL_USING_XMM
1294	hwaccmR0SVMRunWrapXMM(pVCpu->hwaccm.s.svm.pVMCBHostPhys, pVCpu->hwaccm.s.svm.pVMCBPhys, pCtx, pVM, pVCpu, pVCpu->hwaccm.s.svm.pfnVMRun);
1295	#else
1296	pVCpu->hwaccm.s.svm.pfnVMRun(pVCpu->hwaccm.s.svm.pVMCBHostPhys, pVCpu->hwaccm.s.svm.pVMCBPhys, pCtx, pVM, pVCpu);
1297	#endif
1298	ASMAtomicWriteBool(&pVCpu->hwaccm.s.fCheckedTLBFlush, false);
1299	ASMAtomicIncU32(&pVCpu->hwaccm.s.cWorldSwitchExits);
1300	/* Possibly the last TSC value seen by the guest (too high) (only when we're in tsc offset mode). */
1301	if (!(pVMCB->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_RDTSC))
1302	TMCpuTickSetLastSeen(pVCpu, ASMReadTSC() + pVMCB->ctrl.u64TSCOffset - 0x400 /* guestimate of world switch overhead in clock ticks */);
1303	TMNotifyEndOfExecution(pVCpu);
1304	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1305	STAM_PROFILE_ADV_STOP_START(&pVCpu->hwaccm.s.StatInGC, &pVCpu->hwaccm.s.StatExit1, x);
1306	ASMSetFlags(uOldEFlags);
1307	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
1308	uOldEFlags = ~(RTCCUINTREG)0;
1309	#endif
1310
1311	/*
1312	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1313	* 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
1314	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1315	*/
1316
1317	/* Reason for the VM exit */
1318	exitCode = pVMCB->ctrl.u64ExitCode;
1319
1320	if (RT_UNLIKELY(exitCode == (uint64_t)SVM_EXIT_INVALID)) /* Invalid guest state. */
1321	{
1322	HWACCMDumpRegs(pVM, pVCpu, pCtx);
1323	#ifdef DEBUG
1324	Log(("ctrl.u16InterceptRdCRx %x\n", pVMCB->ctrl.u16InterceptRdCRx));
1325	Log(("ctrl.u16InterceptWrCRx %x\n", pVMCB->ctrl.u16InterceptWrCRx));
1326	Log(("ctrl.u16InterceptRdDRx %x\n", pVMCB->ctrl.u16InterceptRdDRx));
1327	Log(("ctrl.u16InterceptWrDRx %x\n", pVMCB->ctrl.u16InterceptWrDRx));
1328	Log(("ctrl.u32InterceptException %x\n", pVMCB->ctrl.u32InterceptException));
1329	Log(("ctrl.u32InterceptCtrl1 %x\n", pVMCB->ctrl.u32InterceptCtrl1));
1330	Log(("ctrl.u32InterceptCtrl2 %x\n", pVMCB->ctrl.u32InterceptCtrl2));
1331	Log(("ctrl.u64IOPMPhysAddr %RX64\n", pVMCB->ctrl.u64IOPMPhysAddr));
1332	Log(("ctrl.u64MSRPMPhysAddr %RX64\n", pVMCB->ctrl.u64MSRPMPhysAddr));
1333	Log(("ctrl.u64TSCOffset %RX64\n", pVMCB->ctrl.u64TSCOffset));
1334
1335	Log(("ctrl.TLBCtrl.u32ASID %x\n", pVMCB->ctrl.TLBCtrl.n.u32ASID));
1336	Log(("ctrl.TLBCtrl.u1TLBFlush %x\n", pVMCB->ctrl.TLBCtrl.n.u1TLBFlush));
1337	Log(("ctrl.TLBCtrl.u7Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u7Reserved));
1338	Log(("ctrl.TLBCtrl.u24Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u24Reserved));
1339
1340	Log(("ctrl.IntCtrl.u8VTPR %x\n", pVMCB->ctrl.IntCtrl.n.u8VTPR));
1341	Log(("ctrl.IntCtrl.u1VIrqValid %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqValid));
1342	Log(("ctrl.IntCtrl.u7Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved));
1343	Log(("ctrl.IntCtrl.u4VIrqPriority %x\n", pVMCB->ctrl.IntCtrl.n.u4VIrqPriority));
1344	Log(("ctrl.IntCtrl.u1IgnoreTPR %x\n", pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR));
1345	Log(("ctrl.IntCtrl.u3Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u3Reserved));
1346	Log(("ctrl.IntCtrl.u1VIrqMasking %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqMasking));
1347	Log(("ctrl.IntCtrl.u7Reserved2 %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved2));
1348	Log(("ctrl.IntCtrl.u8VIrqVector %x\n", pVMCB->ctrl.IntCtrl.n.u8VIrqVector));
1349	Log(("ctrl.IntCtrl.u24Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u24Reserved));
1350
1351	Log(("ctrl.u64IntShadow %RX64\n", pVMCB->ctrl.u64IntShadow));
1352	Log(("ctrl.u64ExitCode %RX64\n", pVMCB->ctrl.u64ExitCode));
1353	Log(("ctrl.u64ExitInfo1 %RX64\n", pVMCB->ctrl.u64ExitInfo1));
1354	Log(("ctrl.u64ExitInfo2 %RX64\n", pVMCB->ctrl.u64ExitInfo2));
1355	Log(("ctrl.ExitIntInfo.u8Vector %x\n", pVMCB->ctrl.ExitIntInfo.n.u8Vector));
1356	Log(("ctrl.ExitIntInfo.u3Type %x\n", pVMCB->ctrl.ExitIntInfo.n.u3Type));
1357	Log(("ctrl.ExitIntInfo.u1ErrorCodeValid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
1358	Log(("ctrl.ExitIntInfo.u19Reserved %x\n", pVMCB->ctrl.ExitIntInfo.n.u19Reserved));
1359	Log(("ctrl.ExitIntInfo.u1Valid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1Valid));
1360	Log(("ctrl.ExitIntInfo.u32ErrorCode %x\n", pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode));
1361	Log(("ctrl.NestedPaging %RX64\n", pVMCB->ctrl.NestedPaging.au64));
1362	Log(("ctrl.EventInject.u8Vector %x\n", pVMCB->ctrl.EventInject.n.u8Vector));
1363	Log(("ctrl.EventInject.u3Type %x\n", pVMCB->ctrl.EventInject.n.u3Type));
1364	Log(("ctrl.EventInject.u1ErrorCodeValid %x\n", pVMCB->ctrl.EventInject.n.u1ErrorCodeValid));
1365	Log(("ctrl.EventInject.u19Reserved %x\n", pVMCB->ctrl.EventInject.n.u19Reserved));
1366	Log(("ctrl.EventInject.u1Valid %x\n", pVMCB->ctrl.EventInject.n.u1Valid));
1367	Log(("ctrl.EventInject.u32ErrorCode %x\n", pVMCB->ctrl.EventInject.n.u32ErrorCode));
1368
1369	Log(("ctrl.u64NestedPagingCR3 %RX64\n", pVMCB->ctrl.u64NestedPagingCR3));
1370	Log(("ctrl.u64LBRVirt %RX64\n", pVMCB->ctrl.u64LBRVirt));
1371
1372	Log(("guest.CS.u16Sel %04X\n", pVMCB->guest.CS.u16Sel));
1373	Log(("guest.CS.u16Attr %04X\n", pVMCB->guest.CS.u16Attr));
1374	Log(("guest.CS.u32Limit %X\n", pVMCB->guest.CS.u32Limit));
1375	Log(("guest.CS.u64Base %RX64\n", pVMCB->guest.CS.u64Base));
1376	Log(("guest.DS.u16Sel %04X\n", pVMCB->guest.DS.u16Sel));
1377	Log(("guest.DS.u16Attr %04X\n", pVMCB->guest.DS.u16Attr));
1378	Log(("guest.DS.u32Limit %X\n", pVMCB->guest.DS.u32Limit));
1379	Log(("guest.DS.u64Base %RX64\n", pVMCB->guest.DS.u64Base));
1380	Log(("guest.ES.u16Sel %04X\n", pVMCB->guest.ES.u16Sel));
1381	Log(("guest.ES.u16Attr %04X\n", pVMCB->guest.ES.u16Attr));
1382	Log(("guest.ES.u32Limit %X\n", pVMCB->guest.ES.u32Limit));
1383	Log(("guest.ES.u64Base %RX64\n", pVMCB->guest.ES.u64Base));
1384	Log(("guest.FS.u16Sel %04X\n", pVMCB->guest.FS.u16Sel));
1385	Log(("guest.FS.u16Attr %04X\n", pVMCB->guest.FS.u16Attr));
1386	Log(("guest.FS.u32Limit %X\n", pVMCB->guest.FS.u32Limit));
1387	Log(("guest.FS.u64Base %RX64\n", pVMCB->guest.FS.u64Base));
1388	Log(("guest.GS.u16Sel %04X\n", pVMCB->guest.GS.u16Sel));
1389	Log(("guest.GS.u16Attr %04X\n", pVMCB->guest.GS.u16Attr));
1390	Log(("guest.GS.u32Limit %X\n", pVMCB->guest.GS.u32Limit));
1391	Log(("guest.GS.u64Base %RX64\n", pVMCB->guest.GS.u64Base));
1392
1393	Log(("guest.GDTR.u32Limit %X\n", pVMCB->guest.GDTR.u32Limit));
1394	Log(("guest.GDTR.u64Base %RX64\n", pVMCB->guest.GDTR.u64Base));
1395
1396	Log(("guest.LDTR.u16Sel %04X\n", pVMCB->guest.LDTR.u16Sel));
1397	Log(("guest.LDTR.u16Attr %04X\n", pVMCB->guest.LDTR.u16Attr));
1398	Log(("guest.LDTR.u32Limit %X\n", pVMCB->guest.LDTR.u32Limit));
1399	Log(("guest.LDTR.u64Base %RX64\n", pVMCB->guest.LDTR.u64Base));
1400
1401	Log(("guest.IDTR.u32Limit %X\n", pVMCB->guest.IDTR.u32Limit));
1402	Log(("guest.IDTR.u64Base %RX64\n", pVMCB->guest.IDTR.u64Base));
1403
1404	Log(("guest.TR.u16Sel %04X\n", pVMCB->guest.TR.u16Sel));
1405	Log(("guest.TR.u16Attr %04X\n", pVMCB->guest.TR.u16Attr));
1406	Log(("guest.TR.u32Limit %X\n", pVMCB->guest.TR.u32Limit));
1407	Log(("guest.TR.u64Base %RX64\n", pVMCB->guest.TR.u64Base));
1408
1409	Log(("guest.u8CPL %X\n", pVMCB->guest.u8CPL));
1410	Log(("guest.u64CR0 %RX64\n", pVMCB->guest.u64CR0));
1411	Log(("guest.u64CR2 %RX64\n", pVMCB->guest.u64CR2));
1412	Log(("guest.u64CR3 %RX64\n", pVMCB->guest.u64CR3));
1413	Log(("guest.u64CR4 %RX64\n", pVMCB->guest.u64CR4));
1414	Log(("guest.u64DR6 %RX64\n", pVMCB->guest.u64DR6));
1415	Log(("guest.u64DR7 %RX64\n", pVMCB->guest.u64DR7));
1416
1417	Log(("guest.u64RIP %RX64\n", pVMCB->guest.u64RIP));
1418	Log(("guest.u64RSP %RX64\n", pVMCB->guest.u64RSP));
1419	Log(("guest.u64RAX %RX64\n", pVMCB->guest.u64RAX));
1420	Log(("guest.u64RFlags %RX64\n", pVMCB->guest.u64RFlags));
1421
1422	Log(("guest.u64SysEnterCS %RX64\n", pVMCB->guest.u64SysEnterCS));
1423	Log(("guest.u64SysEnterEIP %RX64\n", pVMCB->guest.u64SysEnterEIP));
1424	Log(("guest.u64SysEnterESP %RX64\n", pVMCB->guest.u64SysEnterESP));
1425
1426	Log(("guest.u64EFER %RX64\n", pVMCB->guest.u64EFER));
1427	Log(("guest.u64STAR %RX64\n", pVMCB->guest.u64STAR));
1428	Log(("guest.u64LSTAR %RX64\n", pVMCB->guest.u64LSTAR));
1429	Log(("guest.u64CSTAR %RX64\n", pVMCB->guest.u64CSTAR));
1430	Log(("guest.u64SFMASK %RX64\n", pVMCB->guest.u64SFMASK));
1431	Log(("guest.u64KernelGSBase %RX64\n", pVMCB->guest.u64KernelGSBase));
1432	Log(("guest.u64GPAT %RX64\n", pVMCB->guest.u64GPAT));
1433	Log(("guest.u64DBGCTL %RX64\n", pVMCB->guest.u64DBGCTL));
1434	Log(("guest.u64BR_FROM %RX64\n", pVMCB->guest.u64BR_FROM));
1435	Log(("guest.u64BR_TO %RX64\n", pVMCB->guest.u64BR_TO));
1436	Log(("guest.u64LASTEXCPFROM %RX64\n", pVMCB->guest.u64LASTEXCPFROM));
1437	Log(("guest.u64LASTEXCPTO %RX64\n", pVMCB->guest.u64LASTEXCPTO));
1438
1439	#endif
1440	rc = VERR_SVM_UNABLE_TO_START_VM;
1441	VMMR0LogFlushEnable(pVCpu);
1442	goto end;
1443	}
1444
1445	/* Let's first sync back eip, esp, and eflags. */
1446	pCtx->rip = pVMCB->guest.u64RIP;
1447	pCtx->rsp = pVMCB->guest.u64RSP;
1448	pCtx->eflags.u32 = pVMCB->guest.u64RFlags;
1449	/* eax is saved/restore across the vmrun instruction */
1450	pCtx->rax = pVMCB->guest.u64RAX;
1451
1452	/* Save all the MSRs that can be changed by the guest without causing a world switch. (fs & gs base are saved with SVM_READ_SELREG) */
1453	pCtx->msrSTAR = pVMCB->guest.u64STAR; /* legacy syscall eip, cs & ss */
1454	pCtx->msrLSTAR = pVMCB->guest.u64LSTAR; /* 64 bits mode syscall rip */
1455	pCtx->msrCSTAR = pVMCB->guest.u64CSTAR; /* compatibility mode syscall rip */
1456	pCtx->msrSFMASK = pVMCB->guest.u64SFMASK; /* syscall flag mask */
1457	pCtx->msrKERNELGSBASE = pVMCB->guest.u64KernelGSBase; /* swapgs exchange value */
1458	pCtx->SysEnter.cs = pVMCB->guest.u64SysEnterCS;
1459	pCtx->SysEnter.eip = pVMCB->guest.u64SysEnterEIP;
1460	pCtx->SysEnter.esp = pVMCB->guest.u64SysEnterESP;
1461
1462	/* Can be updated behind our back in the nested paging case. */
1463	pCtx->cr2 = pVMCB->guest.u64CR2;
1464
1465	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
1466	SVM_READ_SELREG(SS, ss);
1467	SVM_READ_SELREG(CS, cs);
1468	SVM_READ_SELREG(DS, ds);
1469	SVM_READ_SELREG(ES, es);
1470	SVM_READ_SELREG(FS, fs);
1471	SVM_READ_SELREG(GS, gs);
1472
1473	/* Correct the hidden CS granularity flag. Haven't seen it being wrong in
1474	any other register (yet). */
1475	if ( !pCtx->csHid.Attr.n.u1Granularity
1476	&& pCtx->csHid.Attr.n.u1Present
1477	&& pCtx->csHid.u32Limit > UINT32_C(0xfffff))
1478	{
1479	Assert((pCtx->csHid.u32Limit & 0xfff) == 0xfff);
1480	pCtx->csHid.Attr.n.u1Granularity = 1;
1481	}
1482	#define SVM_ASSERT_SEL_GRANULARITY(reg) \
1483	AssertMsg( !pCtx->reg##Hid.Attr.n.u1Present \
1484	\|\| ( pCtx->reg##Hid.Attr.n.u1Granularity \
1485	? (pCtx->reg##Hid.u32Limit & 0xfff) == 0xfff \
1486	: pCtx->reg##Hid.u32Limit <= 0xfffff), \
1487	("%#x %#x %#llx\n", pCtx->reg##Hid.u32Limit, pCtx->reg##Hid.Attr.u, pCtx->reg##Hid.u64Base))
1488	SVM_ASSERT_SEL_GRANULARITY(ss);
1489	SVM_ASSERT_SEL_GRANULARITY(cs);
1490	SVM_ASSERT_SEL_GRANULARITY(ds);
1491	SVM_ASSERT_SEL_GRANULARITY(es);
1492	SVM_ASSERT_SEL_GRANULARITY(fs);
1493	SVM_ASSERT_SEL_GRANULARITY(gs);
1494	#undef SVM_ASSERT_SEL_GRANULARITY
1495
1496	/* Remaining guest CPU context: TR, IDTR, GDTR, LDTR; must sync everything otherwise we can get out of sync when jumping to ring 3. */
1497	SVM_READ_SELREG(LDTR, ldtr);
1498	SVM_READ_SELREG(TR, tr);
1499
1500	pCtx->gdtr.cbGdt = pVMCB->guest.GDTR.u32Limit;
1501	pCtx->gdtr.pGdt = pVMCB->guest.GDTR.u64Base;
1502
1503	pCtx->idtr.cbIdt = pVMCB->guest.IDTR.u32Limit;
1504	pCtx->idtr.pIdt = pVMCB->guest.IDTR.u64Base;
1505
1506	/* Note: no reason to sync back the CRx and DRx registers. They can't be changed by the guest. */
1507	/* Note: only in the nested paging case can CR3 & CR4 be changed by the guest. */
1508	if ( pVM->hwaccm.s.fNestedPaging
1509	&& pCtx->cr3 != pVMCB->guest.u64CR3)
1510	{
1511	CPUMSetGuestCR3(pVCpu, pVMCB->guest.u64CR3);
1512	PGMUpdateCR3(pVCpu, pVMCB->guest.u64CR3);
1513	}
1514
1515	/* Note! NOW IT'S SAFE FOR LOGGING! */
1516	VMMR0LogFlushEnable(pVCpu);
1517
1518	/* Take care of instruction fusing (sti, mov ss) (see 15.20.5 Interrupt Shadows) */
1519	if (pVMCB->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
1520	{
1521	Log(("uInterruptState %x rip=%RGv\n", pVMCB->ctrl.u64IntShadow, (RTGCPTR)pCtx->rip));
1522	EMSetInhibitInterruptsPC(pVCpu, pCtx->rip);
1523	}
1524	else
1525	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
1526
1527	Log2(("exitCode = %x\n", exitCode));
1528
1529	/* Sync back DR6 as it could have been changed by hitting breakpoints. */
1530	pCtx->dr[6] = pVMCB->guest.u64DR6;
1531	/* DR7.GD can be cleared by debug exceptions, so sync it back as well. */
1532	pCtx->dr[7] = pVMCB->guest.u64DR7;
1533
1534	/* Check if an injected event was interrupted prematurely. */
1535	pVCpu->hwaccm.s.Event.intInfo = pVMCB->ctrl.ExitIntInfo.au64[0];
1536	if ( pVMCB->ctrl.ExitIntInfo.n.u1Valid
1537	&& pVMCB->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT /* we don't care about 'int xx' as the instruction will be restarted. */)
1538	{
1539	Log(("Pending inject %RX64 at %RGv exit=%08x\n", pVCpu->hwaccm.s.Event.intInfo, (RTGCPTR)pCtx->rip, exitCode));
1540
1541	#ifdef LOG_ENABLED
1542	SVM_EVENT Event;
1543	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
1544
1545	if ( exitCode == SVM_EXIT_EXCEPTION_E
1546	&& Event.n.u8Vector == 0xE)
1547	{
1548	Log(("Double fault!\n"));
1549	}
1550	#endif
1551
1552	pVCpu->hwaccm.s.Event.fPending = true;
1553	/* Error code present? (redundant) */
1554	if (pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid)
1555	pVCpu->hwaccm.s.Event.errCode = pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode;
1556	else
1557	pVCpu->hwaccm.s.Event.errCode = 0;
1558	}
1559	#ifdef VBOX_WITH_STATISTICS
1560	if (exitCode == SVM_EXIT_NPF)
1561	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitReasonNPF);
1562	else
1563	STAM_COUNTER_INC(&pVCpu->hwaccm.s.paStatExitReasonR0[exitCode & MASK_EXITREASON_STAT]);
1564	#endif
1565
1566	/* Sync back the TPR if it was changed. */
1567	if (fSyncTPR)
1568	{
1569	if (pVM->hwaccm.s.fTPRPatchingActive)
1570	{
1571	if ((pCtx->msrLSTAR & 0xff) != u8LastTPR)
1572	{
1573	/* Our patch code uses LSTAR for TPR caching. */
1574	rc2 = PDMApicSetTPR(pVCpu, pCtx->msrLSTAR & 0xff);
1575	AssertRC(rc2);
1576	}
1577	}
1578	else
1579	{
1580	if ((u8LastTPR >> 4) != pVMCB->ctrl.IntCtrl.n.u8VTPR)
1581	{
1582	rc2 = PDMApicSetTPR(pVCpu, pVMCB->ctrl.IntCtrl.n.u8VTPR << 4); /* cr8 bits 3-0 correspond to bits 7-4 of the task priority mmio register. */
1583	AssertRC(rc2);
1584	}
1585	}
1586	}
1587
1588	STAM_PROFILE_ADV_STOP_START(&pVCpu->hwaccm.s.StatExit1, &pVCpu->hwaccm.s.StatExit2, x);
1589
1590	/* Deal with the reason of the VM-exit. */
1591	switch (exitCode)
1592	{
1593	case SVM_EXIT_EXCEPTION_0: case SVM_EXIT_EXCEPTION_1: case SVM_EXIT_EXCEPTION_2: case SVM_EXIT_EXCEPTION_3:
1594	case SVM_EXIT_EXCEPTION_4: case SVM_EXIT_EXCEPTION_5: case SVM_EXIT_EXCEPTION_6: case SVM_EXIT_EXCEPTION_7:
1595	case SVM_EXIT_EXCEPTION_8: case SVM_EXIT_EXCEPTION_9: case SVM_EXIT_EXCEPTION_A: case SVM_EXIT_EXCEPTION_B:
1596	case SVM_EXIT_EXCEPTION_C: case SVM_EXIT_EXCEPTION_D: case SVM_EXIT_EXCEPTION_E: case SVM_EXIT_EXCEPTION_F:
1597	case SVM_EXIT_EXCEPTION_10: case SVM_EXIT_EXCEPTION_11: case SVM_EXIT_EXCEPTION_12: case SVM_EXIT_EXCEPTION_13:
1598	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16: case SVM_EXIT_EXCEPTION_17:
1599	case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19: case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B:
1600	case SVM_EXIT_EXCEPTION_1C: case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
1601	{
1602	/* Pending trap. */
1603	SVM_EVENT Event;
1604	uint32_t vector = exitCode - SVM_EXIT_EXCEPTION_0;
1605
1606	Log2(("Hardware/software interrupt %d\n", vector));
1607	switch (vector)
1608	{
1609	case X86_XCPT_DB:
1610	{
1611	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDB);
1612
1613	/* Note that we don't support guest and host-initiated debugging at the same time. */
1614	Assert(DBGFIsStepping(pVCpu) \|\| CPUMIsHyperDebugStateActive(pVCpu));
1615
1616	rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pCtx->dr[6]);
1617	if (rc == VINF_EM_RAW_GUEST_TRAP)
1618	{
1619	Log(("Trap %x (debug) at %016RX64\n", vector, pCtx->rip));
1620
1621	/* Reinject the exception. */
1622	Event.au64[0] = 0;
1623	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1624	Event.n.u1Valid = 1;
1625	Event.n.u8Vector = X86_XCPT_DB;
1626
1627	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
1628	goto ResumeExecution;
1629	}
1630	/* Return to ring 3 to deal with the debug exit code. */
1631	Log(("Debugger hardware BP at %04x:%RGv (rc=%Rrc)\n", pCtx->cs, pCtx->rip, VBOXSTRICTRC_VAL(rc)));
1632	break;
1633	}
1634
1635	case X86_XCPT_NM:
1636	{
1637	Log(("#NM fault at %RGv\n", (RTGCPTR)pCtx->rip));
1638
1639	/** @todo don't intercept #NM exceptions anymore when we've activated the guest FPU state. */
1640	/* If we sync the FPU/XMM state on-demand, then we can continue execution as if nothing has happened. */
1641	rc = CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
1642	if (rc == VINF_SUCCESS)
1643	{
1644	Assert(CPUMIsGuestFPUStateActive(pVCpu));
1645	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowNM);
1646
1647	/* Continue execution. */
1648	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1649
1650	goto ResumeExecution;
1651	}
1652
1653	Log(("Forward #NM fault to the guest\n"));
1654	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNM);
1655
1656	Event.au64[0] = 0;
1657	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1658	Event.n.u1Valid = 1;
1659	Event.n.u8Vector = X86_XCPT_NM;
1660
1661	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
1662	goto ResumeExecution;
1663	}
1664
1665	case X86_XCPT_PF: /* Page fault */
1666	{
1667	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1668	RTGCUINTPTR uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1669
1670	#ifdef DEBUG
1671	if (pVM->hwaccm.s.fNestedPaging)
1672	{ /* A genuine pagefault.
1673	* Forward the trap to the guest by injecting the exception and resuming execution.
1674	*/
1675	Log(("Guest page fault at %04X:%RGv cr2=%RGv error code %x rsp=%RGv\n", pCtx->cs, (RTGCPTR)pCtx->rip, uFaultAddress, errCode, (RTGCPTR)pCtx->rsp));
1676	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1677
1678	/* Now we must update CR2. */
1679	pCtx->cr2 = uFaultAddress;
1680
1681	Event.au64[0] = 0;
1682	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1683	Event.n.u1Valid = 1;
1684	Event.n.u8Vector = X86_XCPT_PF;
1685	Event.n.u1ErrorCodeValid = 1;
1686	Event.n.u32ErrorCode = errCode;
1687
1688	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
1689	goto ResumeExecution;
1690	}
1691	#endif
1692	Assert(!pVM->hwaccm.s.fNestedPaging);
1693
1694	#ifdef VBOX_HWACCM_WITH_GUEST_PATCHING
1695	/* Shortcut for APIC TPR reads and writes; 32 bits guests only */
1696	if ( pVM->hwaccm.s.fTRPPatchingAllowed
1697	&& (uFaultAddress & 0xfff) == 0x080
1698	&& !(errCode & X86_TRAP_PF_P) /* not present */
1699	&& CPUMGetGuestCPL(pVCpu, CPUMCTX2CORE(pCtx)) == 0
1700	&& !CPUMIsGuestInLongModeEx(pCtx)
1701	&& pVM->hwaccm.s.cPatches < RT_ELEMENTS(pVM->hwaccm.s.aPatches))
1702	{
1703	RTGCPHYS GCPhysApicBase, GCPhys;
1704	PDMApicGetBase(pVM, &GCPhysApicBase); /* @todo cache this */
1705	GCPhysApicBase &= PAGE_BASE_GC_MASK;
1706
1707	rc = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL, &GCPhys);
1708	if ( rc == VINF_SUCCESS
1709	&& GCPhys == GCPhysApicBase)
1710	{
1711	/* Only attempt to patch the instruction once. */
1712	PHWACCMTPRPATCH pPatch = (PHWACCMTPRPATCH)RTAvloU32Get(&pVM->hwaccm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
1713	if (!pPatch)
1714	{
1715	rc = VINF_EM_HWACCM_PATCH_TPR_INSTR;
1716	break;
1717	}
1718	}
1719	}
1720	#endif
1721
1722	Log2(("Page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1723	/* Exit qualification contains the linear address of the page fault. */
1724	TRPMAssertTrap(pVCpu, X86_XCPT_PF, TRPM_TRAP);
1725	TRPMSetErrorCode(pVCpu, errCode);
1726	TRPMSetFaultAddress(pVCpu, uFaultAddress);
1727
1728	/* Forward it to our trap handler first, in case our shadow pages are out of sync. */
1729	rc = PGMTrap0eHandler(pVCpu, errCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
1730	Log2(("PGMTrap0eHandler %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, VBOXSTRICTRC_VAL(rc)));
1731	if (rc == VINF_SUCCESS)
1732	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1733	Log2(("Shadow page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1734	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1735
1736	TRPMResetTrap(pVCpu);
1737	goto ResumeExecution;
1738	}
1739	else
1740	if (rc == VINF_EM_RAW_GUEST_TRAP)
1741	{ /* A genuine pagefault.
1742	* Forward the trap to the guest by injecting the exception and resuming execution.
1743	*/
1744	Log2(("Forward page fault to the guest\n"));
1745	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1746	/* The error code might have been changed. */
1747	errCode = TRPMGetErrorCode(pVCpu);
1748
1749	TRPMResetTrap(pVCpu);
1750
1751	/* Now we must update CR2. */
1752	pCtx->cr2 = uFaultAddress;
1753
1754	Event.au64[0] = 0;
1755	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1756	Event.n.u1Valid = 1;
1757	Event.n.u8Vector = X86_XCPT_PF;
1758	Event.n.u1ErrorCodeValid = 1;
1759	Event.n.u32ErrorCode = errCode;
1760
1761	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
1762	goto ResumeExecution;
1763	}
1764	#ifdef VBOX_STRICT
1765	if (rc != VINF_EM_RAW_EMULATE_INSTR && rc != VINF_EM_RAW_EMULATE_IO_BLOCK)
1766	LogFlow(("PGMTrap0eHandler failed with %d\n", VBOXSTRICTRC_VAL(rc)));
1767	#endif
1768	/* Need to go back to the recompiler to emulate the instruction. */
1769	TRPMResetTrap(pVCpu);
1770	break;
1771	}
1772
1773	case X86_XCPT_MF: /* Floating point exception. */
1774	{
1775	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestMF);
1776	if (!(pCtx->cr0 & X86_CR0_NE))
1777	{
1778	/* old style FPU error reporting needs some extra work. */
1779	/** @todo don't fall back to the recompiler, but do it manually. */
1780	rc = VINF_EM_RAW_EMULATE_INSTR;
1781	break;
1782	}
1783	Log(("Trap %x at %RGv\n", vector, (RTGCPTR)pCtx->rip));
1784
1785	Event.au64[0] = 0;
1786	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1787	Event.n.u1Valid = 1;
1788	Event.n.u8Vector = X86_XCPT_MF;
1789
1790	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
1791	goto ResumeExecution;
1792	}
1793
1794	#ifdef VBOX_STRICT
1795	case X86_XCPT_BP: /* Breakpoint. */
1796	case X86_XCPT_GP: /* General protection failure exception.*/
1797	case X86_XCPT_UD: /* Unknown opcode exception. */
1798	case X86_XCPT_DE: /* Divide error. */
1799	case X86_XCPT_SS: /* Stack segment exception. */
1800	case X86_XCPT_NP: /* Segment not present exception. */
1801	{
1802	Event.au64[0] = 0;
1803	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1804	Event.n.u1Valid = 1;
1805	Event.n.u8Vector = vector;
1806
1807	switch(vector)
1808	{
1809	case X86_XCPT_GP:
1810	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestGP);
1811	Event.n.u1ErrorCodeValid = 1;
1812	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1813	break;
1814	case X86_XCPT_BP:
1815	/** Saves the wrong EIP on the stack (pointing to the int3 instead of the next instruction. */
1816	break;
1817	case X86_XCPT_DE:
1818	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDE);
1819	break;
1820	case X86_XCPT_UD:
1821	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestUD);
1822	break;
1823	case X86_XCPT_SS:
1824	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestSS);
1825	Event.n.u1ErrorCodeValid = 1;
1826	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1827	break;
1828	case X86_XCPT_NP:
1829	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNP);
1830	Event.n.u1ErrorCodeValid = 1;
1831	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1832	break;
1833	}
1834	Log(("Trap %x at %04x:%RGv esi=%x\n", vector, pCtx->cs, (RTGCPTR)pCtx->rip, pCtx->esi));
1835	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
1836	goto ResumeExecution;
1837	}
1838	#endif
1839	default:
1840	AssertMsgFailed(("Unexpected vm-exit caused by exception %x\n", vector));
1841	rc = VERR_EM_INTERNAL_ERROR;
1842	break;
1843
1844	} /* switch (vector) */
1845	break;
1846	}
1847
1848	case SVM_EXIT_NPF:
1849	{
1850	/* EXITINFO1 contains fault errorcode; EXITINFO2 contains the guest physical address causing the fault. */
1851	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1852	RTGCPHYS GCPhysFault = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1853	PGMMODE enmShwPagingMode;
1854
1855	Assert(pVM->hwaccm.s.fNestedPaging);
1856	LogFlow(("Nested page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, GCPhysFault, errCode));
1857
1858	#ifdef VBOX_HWACCM_WITH_GUEST_PATCHING
1859	/* Shortcut for APIC TPR reads and writes; 32 bits guests only */
1860	if ( pVM->hwaccm.s.fTRPPatchingAllowed
1861	&& (GCPhysFault & PAGE_OFFSET_MASK) == 0x080
1862	&& ( !(errCode & X86_TRAP_PF_P) /* not present */
1863	\|\| (errCode & (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P \| X86_TRAP_PF_RSVD) /* mmio optimization */)
1864	&& CPUMGetGuestCPL(pVCpu, CPUMCTX2CORE(pCtx)) == 0
1865	&& !CPUMIsGuestInLongModeEx(pCtx)
1866	&& pVM->hwaccm.s.cPatches < RT_ELEMENTS(pVM->hwaccm.s.aPatches))
1867	{
1868	RTGCPHYS GCPhysApicBase;
1869	PDMApicGetBase(pVM, &GCPhysApicBase); /* @todo cache this */
1870	GCPhysApicBase &= PAGE_BASE_GC_MASK;
1871
1872	if (GCPhysFault == GCPhysApicBase + 0x80)
1873	{
1874	/* Only attempt to patch the instruction once. */
1875	PHWACCMTPRPATCH pPatch = (PHWACCMTPRPATCH)RTAvloU32Get(&pVM->hwaccm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
1876	if (!pPatch)
1877	{
1878	rc = VINF_EM_HWACCM_PATCH_TPR_INSTR;
1879	break;
1880	}
1881	}
1882	}
1883	#endif
1884
1885	/* Handle the pagefault trap for the nested shadow table. */
1886	#if HC_ARCH_BITS == 32 /** @todo shadow this in a variable. */
1887	if (CPUMIsGuestInLongModeEx(pCtx))
1888	enmShwPagingMode = PGMMODE_AMD64_NX;
1889	else
1890	#endif
1891	enmShwPagingMode = PGMGetHostMode(pVM);
1892
1893	/* MMIO optimization */
1894	Assert((errCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
1895	if ((errCode & (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD \| X86_TRAP_PF_P))
1896	{
1897	rc = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmShwPagingMode, CPUMCTX2CORE(pCtx), GCPhysFault, errCode);
1898	if (rc == VINF_SUCCESS)
1899	{
1900	Log2(("PGMR0Trap0eHandlerNPMisconfig(,,,%RGp) at %RGv -> resume\n", GCPhysFault, (RTGCPTR)pCtx->rip));
1901	goto ResumeExecution;
1902	}
1903	Log2(("PGMR0Trap0eHandlerNPMisconfig(,,,%RGp) at %RGv -> resume\n", GCPhysFault, (RTGCPTR)pCtx->rip));
1904	break;
1905	}
1906
1907	/* Exit qualification contains the linear address of the page fault. */
1908	TRPMAssertTrap(pVCpu, X86_XCPT_PF, TRPM_TRAP);
1909	TRPMSetErrorCode(pVCpu, errCode);
1910	TRPMSetFaultAddress(pVCpu, GCPhysFault);
1911
1912	rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmShwPagingMode, errCode, CPUMCTX2CORE(pCtx), GCPhysFault);
1913	Log2(("PGMR0Trap0eHandlerNestedPaging %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, VBOXSTRICTRC_VAL(rc)));
1914	if (rc == VINF_SUCCESS)
1915	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1916	Log2(("Shadow page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, GCPhysFault, errCode));
1917	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1918
1919	TRPMResetTrap(pVCpu);
1920	goto ResumeExecution;
1921	}
1922
1923	#ifdef VBOX_STRICT
1924	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1925	LogFlow(("PGMTrap0eHandlerNestedPaging failed with %d\n", VBOXSTRICTRC_VAL(rc)));
1926	#endif
1927	/* Need to go back to the recompiler to emulate the instruction. */
1928	TRPMResetTrap(pVCpu);
1929	break;
1930	}
1931
1932	case SVM_EXIT_VINTR:
1933	/* A virtual interrupt is about to be delivered, which means IF=1. */
1934	Log(("SVM_EXIT_VINTR IF=%d\n", pCtx->eflags.Bits.u1IF));
1935	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 0;
1936	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0;
1937	goto ResumeExecution;
1938
1939	case SVM_EXIT_FERR_FREEZE:
1940	case SVM_EXIT_INTR:
1941	case SVM_EXIT_NMI:
1942	case SVM_EXIT_SMI:
1943	case SVM_EXIT_INIT:
1944	/* External interrupt; leave to allow it to be dispatched again. */
1945	rc = VINF_EM_RAW_INTERRUPT;
1946	break;
1947
1948	case SVM_EXIT_WBINVD:
1949	case SVM_EXIT_INVD: /* Guest software attempted to execute INVD. */
1950	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvd);
1951	/* Skip instruction and continue directly. */
1952	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1953	/* Continue execution.*/
1954	goto ResumeExecution;
1955
1956	case SVM_EXIT_CPUID: /* Guest software attempted to execute CPUID. */
1957	{
1958	Log2(("SVM: Cpuid at %RGv for %x\n", (RTGCPTR)pCtx->rip, pCtx->eax));
1959	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCpuid);
1960	rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
1961	if (rc == VINF_SUCCESS)
1962	{
1963	/* Update EIP and continue execution. */
1964	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1965	goto ResumeExecution;
1966	}
1967	AssertMsgFailed(("EMU: cpuid failed with %Rrc\n", VBOXSTRICTRC_VAL(rc)));
1968	rc = VINF_EM_RAW_EMULATE_INSTR;
1969	break;
1970	}
1971
1972	case SVM_EXIT_RDTSC: /* Guest software attempted to execute RDTSC. */
1973	{
1974	Log2(("SVM: Rdtsc\n"));
1975	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
1976	rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
1977	if (rc == VINF_SUCCESS)
1978	{
1979	/* Update EIP and continue execution. */
1980	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1981	goto ResumeExecution;
1982	}
1983	rc = VINF_EM_RAW_EMULATE_INSTR;
1984	break;
1985	}
1986
1987	case SVM_EXIT_RDPMC: /* Guest software attempted to execute RDPMC. */
1988	{
1989	Log2(("SVM: Rdpmc %x\n", pCtx->ecx));
1990	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdpmc);
1991	rc = EMInterpretRdpmc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
1992	if (rc == VINF_SUCCESS)
1993	{
1994	/* Update EIP and continue execution. */
1995	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1996	goto ResumeExecution;
1997	}
1998	rc = VINF_EM_RAW_EMULATE_INSTR;
1999	break;
2000	}
2001
2002	case SVM_EXIT_RDTSCP: /* Guest software attempted to execute RDTSCP. */
2003	{
2004	Log2(("SVM: Rdtscp\n"));
2005	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
2006	rc = EMInterpretRdtscp(pVM, pVCpu, pCtx);
2007	if (rc == VINF_SUCCESS)
2008	{
2009	/* Update EIP and continue execution. */
2010	pCtx->rip += 3; /* Note! hardcoded opcode size! */
2011	goto ResumeExecution;
2012	}
2013	AssertMsgFailed(("EMU: rdtscp failed with %Rrc\n", VBOXSTRICTRC_VAL(rc)));
2014	rc = VINF_EM_RAW_EMULATE_INSTR;
2015	break;
2016	}
2017
2018	case SVM_EXIT_INVLPG: /* Guest software attempted to execute INVPG. */
2019	{
2020	Log2(("SVM: invlpg\n"));
2021	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvpg);
2022
2023	Assert(!pVM->hwaccm.s.fNestedPaging);
2024
2025	/* Truly a pita. Why can't SVM give the same information as VT-x? */
2026	rc = svmR0InterpretInvpg(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVMCB->ctrl.TLBCtrl.n.u32ASID);
2027	if (rc == VINF_SUCCESS)
2028	{
2029	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageInvlpg);
2030	goto ResumeExecution; /* eip already updated */
2031	}
2032	break;
2033	}
2034
2035	case SVM_EXIT_WRITE_CR0: case SVM_EXIT_WRITE_CR1: case SVM_EXIT_WRITE_CR2: case SVM_EXIT_WRITE_CR3:
2036	case SVM_EXIT_WRITE_CR4: case SVM_EXIT_WRITE_CR5: case SVM_EXIT_WRITE_CR6: case SVM_EXIT_WRITE_CR7:
2037	case SVM_EXIT_WRITE_CR8: case SVM_EXIT_WRITE_CR9: case SVM_EXIT_WRITE_CR10: case SVM_EXIT_WRITE_CR11:
2038	case SVM_EXIT_WRITE_CR12: case SVM_EXIT_WRITE_CR13: case SVM_EXIT_WRITE_CR14: case SVM_EXIT_WRITE_CR15:
2039	{
2040	uint32_t cbSize;
2041
2042	Log2(("SVM: %RGv mov cr%d, \n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_CR0));
2043	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxWrite[exitCode - SVM_EXIT_WRITE_CR0]);
2044	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
2045
2046	switch (exitCode - SVM_EXIT_WRITE_CR0)
2047	{
2048	case 0:
2049	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
2050	break;
2051	case 2:
2052	break;
2053	case 3:
2054	Assert(!pVM->hwaccm.s.fNestedPaging);
2055	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR3;
2056	break;
2057	case 4:
2058	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR4;
2059	break;
2060	case 8:
2061	break;
2062	default:
2063	AssertFailed();
2064	}
2065	if (rc == VINF_SUCCESS)
2066	{
2067	/* EIP has been updated already. */
2068
2069	/* Only resume if successful. */
2070	goto ResumeExecution;
2071	}
2072	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
2073	break;
2074	}
2075
2076	case SVM_EXIT_READ_CR0: case SVM_EXIT_READ_CR1: case SVM_EXIT_READ_CR2: case SVM_EXIT_READ_CR3:
2077	case SVM_EXIT_READ_CR4: case SVM_EXIT_READ_CR5: case SVM_EXIT_READ_CR6: case SVM_EXIT_READ_CR7:
2078	case SVM_EXIT_READ_CR8: case SVM_EXIT_READ_CR9: case SVM_EXIT_READ_CR10: case SVM_EXIT_READ_CR11:
2079	case SVM_EXIT_READ_CR12: case SVM_EXIT_READ_CR13: case SVM_EXIT_READ_CR14: case SVM_EXIT_READ_CR15:
2080	{
2081	uint32_t cbSize;
2082
2083	Log2(("SVM: %RGv mov x, cr%d\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_CR0));
2084	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxRead[exitCode - SVM_EXIT_READ_CR0]);
2085	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
2086	if (rc == VINF_SUCCESS)
2087	{
2088	/* EIP has been updated already. */
2089
2090	/* Only resume if successful. */
2091	goto ResumeExecution;
2092	}
2093	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
2094	break;
2095	}
2096
2097	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
2098	case SVM_EXIT_WRITE_DR4: case SVM_EXIT_WRITE_DR5: case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7:
2099	case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9: case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11:
2100	case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13: case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
2101	{
2102	uint32_t cbSize;
2103
2104	Log2(("SVM: %RGv mov dr%d, x\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_DR0));
2105	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxWrite);
2106
2107	if ( !DBGFIsStepping(pVCpu)
2108	&& !CPUMIsHyperDebugStateActive(pVCpu))
2109	{
2110	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
2111
2112	/* Disable drx move intercepts. */
2113	pVMCB->ctrl.u16InterceptRdDRx = 0;
2114	pVMCB->ctrl.u16InterceptWrDRx = 0;
2115
2116	/* Save the host and load the guest debug state. */
2117	rc2 = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
2118	AssertRC(rc2);
2119	goto ResumeExecution;
2120	}
2121
2122	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
2123	if (rc == VINF_SUCCESS)
2124	{
2125	/* EIP has been updated already. */
2126	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
2127
2128	/* Only resume if successful. */
2129	goto ResumeExecution;
2130	}
2131	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
2132	break;
2133	}
2134
2135	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
2136	case SVM_EXIT_READ_DR4: case SVM_EXIT_READ_DR5: case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7:
2137	case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9: case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11:
2138	case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13: case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
2139	{
2140	uint32_t cbSize;
2141
2142	Log2(("SVM: %RGv mov x, dr%d\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_DR0));
2143	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxRead);
2144
2145	if (!DBGFIsStepping(pVCpu))
2146	{
2147	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
2148
2149	/* Disable drx move intercepts. */
2150	pVMCB->ctrl.u16InterceptRdDRx = 0;
2151	pVMCB->ctrl.u16InterceptWrDRx = 0;
2152
2153	/* Save the host and load the guest debug state. */
2154	rc2 = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
2155	AssertRC(rc2);
2156	goto ResumeExecution;
2157	}
2158
2159	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
2160	if (rc == VINF_SUCCESS)
2161	{
2162	/* EIP has been updated already. */
2163
2164	/* Only resume if successful. */
2165	goto ResumeExecution;
2166	}
2167	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
2168	break;
2169	}
2170
2171	/* Note: We'll get a #GP if the IO instruction isn't allowed (IOPL or TSS bitmap); no need to double check. */
2172	case SVM_EXIT_IOIO: /* I/O instruction. */
2173	{
2174	SVM_IOIO_EXIT IoExitInfo;
2175	uint32_t uIOSize, uAndVal;
2176
2177	IoExitInfo.au32[0] = pVMCB->ctrl.u64ExitInfo1;
2178
2179	/** @todo could use a lookup table here */
2180	if (IoExitInfo.n.u1OP8)
2181	{
2182	uIOSize = 1;
2183	uAndVal = 0xff;
2184	}
2185	else
2186	if (IoExitInfo.n.u1OP16)
2187	{
2188	uIOSize = 2;
2189	uAndVal = 0xffff;
2190	}
2191	else
2192	if (IoExitInfo.n.u1OP32)
2193	{
2194	uIOSize = 4;
2195	uAndVal = 0xffffffff;
2196	}
2197	else
2198	{
2199	AssertFailed(); /* should be fatal. */
2200	rc = VINF_EM_RAW_EMULATE_INSTR;
2201	break;
2202	}
2203
2204	if (IoExitInfo.n.u1STR)
2205	{
2206	/* ins/outs */
2207	PDISCPUSTATE pDis = &pVCpu->hwaccm.s.DisState;
2208
2209	/* Disassemble manually to deal with segment prefixes. */
2210	rc = EMInterpretDisasOne(pVM, pVCpu, CPUMCTX2CORE(pCtx), pDis, NULL);
2211	if (rc == VINF_SUCCESS)
2212	{
2213	if (IoExitInfo.n.u1Type == 0)
2214	{
2215	Log2(("IOMInterpretOUTSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
2216	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringWrite);
2217	rc = IOMInterpretOUTSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->prefix, uIOSize);
2218	}
2219	else
2220	{
2221	Log2(("IOMInterpretINSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
2222	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringRead);
2223	rc = IOMInterpretINSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->prefix, uIOSize);
2224	}
2225	}
2226	else
2227	rc = VINF_EM_RAW_EMULATE_INSTR;
2228	}
2229	else
2230	{
2231	/* normal in/out */
2232	Assert(!IoExitInfo.n.u1REP);
2233
2234	if (IoExitInfo.n.u1Type == 0)
2235	{
2236	Log2(("IOMIOPortWrite %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize));
2237	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOWrite);
2238	rc = IOMIOPortWrite(pVM, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize);
2239	if (rc == VINF_IOM_HC_IOPORT_WRITE)
2240	HWACCMR0SavePendingIOPortWrite(pVCpu, pCtx->rip, pVMCB->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, uIOSize);
2241	}
2242	else
2243	{
2244	uint32_t u32Val = 0;
2245
2246	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIORead);
2247	rc = IOMIOPortRead(pVM, IoExitInfo.n.u16Port, &u32Val, uIOSize);
2248	if (IOM_SUCCESS(rc))
2249	{
2250	/* Write back to the EAX register. */
2251	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
2252	Log2(("IOMIOPortRead %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, u32Val & uAndVal, uIOSize));
2253	}
2254	else
2255	if (rc == VINF_IOM_HC_IOPORT_READ)
2256	HWACCMR0SavePendingIOPortRead(pVCpu, pCtx->rip, pVMCB->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, uIOSize);
2257	}
2258	}
2259	/*
2260	* Handled the I/O return codes.
2261	* (The unhandled cases end up with rc == VINF_EM_RAW_EMULATE_INSTR.)
2262	*/
2263	if (IOM_SUCCESS(rc))
2264	{
2265	/* Update EIP and continue execution. */
2266	pCtx->rip = pVMCB->ctrl.u64ExitInfo2; /* RIP/EIP of the next instruction is saved in EXITINFO2. */
2267	if (RT_LIKELY(rc == VINF_SUCCESS))
2268	{
2269	/* If any IO breakpoints are armed, then we should check if a debug trap needs to be generated. */
2270	if (pCtx->dr[7] & X86_DR7_ENABLED_MASK)
2271	{
2272	/* IO operation lookup arrays. */
2273	static uint32_t const aIOSize[4] = {1, 2, 0, 4};
2274
2275	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxIOCheck);
2276	for (unsigned i=0;i<4;i++)
2277	{
2278	unsigned uBPLen = aIOSize[X86_DR7_GET_LEN(pCtx->dr[7], i)];
2279
2280	if ( (IoExitInfo.n.u16Port >= pCtx->dr[i] && IoExitInfo.n.u16Port < pCtx->dr[i] + uBPLen)
2281	&& (pCtx->dr[7] & (X86_DR7_L(i) \| X86_DR7_G(i)))
2282	&& (pCtx->dr[7] & X86_DR7_RW(i, X86_DR7_RW_IO)) == X86_DR7_RW(i, X86_DR7_RW_IO))
2283	{
2284	SVM_EVENT Event;
2285
2286	Assert(CPUMIsGuestDebugStateActive(pVCpu));
2287
2288	/* Clear all breakpoint status flags and set the one we just hit. */
2289	pCtx->dr[6] &= ~(X86_DR6_B0\|X86_DR6_B1\|X86_DR6_B2\|X86_DR6_B3);
2290	pCtx->dr[6] \|= (uint64_t)RT_BIT(i);
2291
2292	/* Note: AMD64 Architecture Programmer's Manual 13.1:
2293	* Bits 15:13 of the DR6 register is never cleared by the processor and must be cleared by software after
2294	* the contents have been read.
2295	*/
2296	pVMCB->guest.u64DR6 = pCtx->dr[6];
2297
2298	/* X86_DR7_GD will be cleared if drx accesses should be trapped inside the guest. */
2299	pCtx->dr[7] &= ~X86_DR7_GD;
2300
2301	/* Paranoia. */
2302	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
2303	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
2304	pCtx->dr[7] \|= 0x400; /* must be one */
2305
2306	pVMCB->guest.u64DR7 = pCtx->dr[7];
2307
2308	/* Inject the exception. */
2309	Log(("Inject IO debug trap at %RGv\n", (RTGCPTR)pCtx->rip));
2310
2311	Event.au64[0] = 0;
2312	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
2313	Event.n.u1Valid = 1;
2314	Event.n.u8Vector = X86_XCPT_DB;
2315
2316	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
2317	goto ResumeExecution;
2318	}
2319	}
2320	}
2321	goto ResumeExecution;
2322	}
2323	Log2(("EM status from IO at %RGv %x size %d: %Rrc\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize, VBOXSTRICTRC_VAL(rc)));
2324	break;
2325	}
2326
2327	#ifdef VBOX_STRICT
2328	if (rc == VINF_IOM_HC_IOPORT_READ)
2329	Assert(IoExitInfo.n.u1Type != 0);
2330	else if (rc == VINF_IOM_HC_IOPORT_WRITE)
2331	Assert(IoExitInfo.n.u1Type == 0);
2332	else
2333	AssertMsg(RT_FAILURE(rc) \|\| rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", VBOXSTRICTRC_VAL(rc)));
2334	#endif
2335	Log2(("Failed IO at %RGv %x size %d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
2336	break;
2337	}
2338
2339	case SVM_EXIT_HLT:
2340	/** Check if external interrupts are pending; if so, don't switch back. */
2341	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitHlt);
2342	pCtx->rip++; /* skip hlt */
2343	if (EMShouldContinueAfterHalt(pVCpu, pCtx))
2344	goto ResumeExecution;
2345
2346	rc = VINF_EM_HALT;
2347	break;
2348
2349	case SVM_EXIT_MWAIT_UNCOND:
2350	Log2(("SVM: mwait\n"));
2351	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitMwait);
2352	rc = EMInterpretMWait(pVM, pVCpu, CPUMCTX2CORE(pCtx));
2353	if ( rc == VINF_EM_HALT
2354	\|\| rc == VINF_SUCCESS)
2355	{
2356	/* Update EIP and continue execution. */
2357	pCtx->rip += 3; /* Note: hardcoded opcode size assumption! */
2358
2359	/** Check if external interrupts are pending; if so, don't switch back. */
2360	if ( rc == VINF_SUCCESS
2361	\|\| ( rc == VINF_EM_HALT
2362	&& EMShouldContinueAfterHalt(pVCpu, pCtx))
2363	)
2364	goto ResumeExecution;
2365	}
2366	AssertMsg(rc == VERR_EM_INTERPRETER \|\| rc == VINF_EM_HALT, ("EMU: mwait failed with %Rrc\n", VBOXSTRICTRC_VAL(rc)));
2367	break;
2368
2369	case SVM_EXIT_MONITOR:
2370	{
2371	Log2(("SVM: monitor\n"));
2372
2373	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitMonitor);
2374	rc = EMInterpretMonitor(pVM, pVCpu, CPUMCTX2CORE(pCtx));
2375	if (rc == VINF_SUCCESS)
2376	{
2377	/* Update EIP and continue execution. */
2378	pCtx->rip += 3; /* Note: hardcoded opcode size assumption! */
2379	goto ResumeExecution;
2380	}
2381	AssertMsg(rc == VERR_EM_INTERPRETER, ("EMU: monitor failed with %Rrc\n", VBOXSTRICTRC_VAL(rc)));
2382	break;
2383	}
2384
2385
2386	case SVM_EXIT_VMMCALL:
2387	rc = svmR0EmulateTprVMMCall(pVM, pVCpu, pCtx);
2388	if (rc == VINF_SUCCESS)
2389	{
2390	goto ResumeExecution; /* rip already updated. */
2391	}
2392	/* no break */
2393
2394	case SVM_EXIT_RSM:
2395	case SVM_EXIT_INVLPGA:
2396	case SVM_EXIT_VMRUN:
2397	case SVM_EXIT_VMLOAD:
2398	case SVM_EXIT_VMSAVE:
2399	case SVM_EXIT_STGI:
2400	case SVM_EXIT_CLGI:
2401	case SVM_EXIT_SKINIT:
2402	{
2403	/* Unsupported instructions. */
2404	SVM_EVENT Event;
2405
2406	Event.au64[0] = 0;
2407	Event.n.u3Type = SVM_EVENT_EXCEPTION;
2408	Event.n.u1Valid = 1;
2409	Event.n.u8Vector = X86_XCPT_UD;
2410
2411	Log(("Forced #UD trap at %RGv\n", (RTGCPTR)pCtx->rip));
2412	SVMR0InjectEvent(pVCpu, pVMCB, pCtx, &Event);
2413	goto ResumeExecution;
2414	}
2415
2416	/* Emulate in ring 3. */
2417	case SVM_EXIT_MSR:
2418	{
2419	uint32_t cbSize;
2420
2421	/* When an interrupt is pending, we'll let MSR_K8_LSTAR writes fault in our TPR patch code. */
2422	if ( pVM->hwaccm.s.fTPRPatchingActive
2423	&& pCtx->ecx == MSR_K8_LSTAR
2424	&& pVMCB->ctrl.u64ExitInfo1 == 1 /* wrmsr */)
2425	{
2426	if ((pCtx->eax & 0xff) != u8LastTPR)
2427	{
2428	Log(("SVM: Faulting MSR_K8_LSTAR write with new TPR value %x\n", pCtx->eax & 0xff));
2429
2430	/* Our patch code uses LSTAR for TPR caching. */
2431	rc2 = PDMApicSetTPR(pVCpu, pCtx->eax & 0xff);
2432	AssertRC(rc2);
2433	}
2434
2435	/* Skip the instruction and continue. */
2436	pCtx->rip += 2; /* wrmsr = [0F 30] */
2437
2438	/* Only resume if successful. */
2439	goto ResumeExecution;
2440	}
2441
2442	/* 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. */
2443	STAM_COUNTER_INC((pVMCB->ctrl.u64ExitInfo1 == 0) ? &pVCpu->hwaccm.s.StatExitRdmsr : &pVCpu->hwaccm.s.StatExitWrmsr);
2444	Log(("SVM: %s\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr"));
2445	rc = EMInterpretInstruction(pVM, pVCpu, CPUMCTX2CORE(pCtx), 0, &cbSize);
2446	if (rc == VINF_SUCCESS)
2447	{
2448	/* EIP has been updated already. */
2449
2450	/* Only resume if successful. */
2451	goto ResumeExecution;
2452	}
2453	AssertMsg(rc == VERR_EM_INTERPRETER, ("EMU: %s failed with %Rrc\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr", VBOXSTRICTRC_VAL(rc)));
2454	break;
2455	}
2456
2457	case SVM_EXIT_TASK_SWITCH: /* too complicated to emulate, so fall back to the recompiler*/
2458	Log(("SVM_EXIT_TASK_SWITCH: exit2=%RX64\n", pVMCB->ctrl.u64ExitInfo2));
2459	if ( !(pVMCB->ctrl.u64ExitInfo2 & (SVM_EXIT2_TASK_SWITCH_IRET \| SVM_EXIT2_TASK_SWITCH_JMP))
2460	&& pVCpu->hwaccm.s.Event.fPending)
2461	{
2462	SVM_EVENT Event;
2463
2464	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
2465
2466	/* Caused by an injected interrupt. */
2467	pVCpu->hwaccm.s.Event.fPending = false;
2468
2469	switch (Event.n.u3Type)
2470	{
2471	case SVM_EVENT_EXTERNAL_IRQ:
2472	case SVM_EVENT_NMI:
2473	Log(("SVM_EXIT_TASK_SWITCH: reassert trap %d\n", Event.n.u8Vector));
2474	Assert(!Event.n.u1ErrorCodeValid);
2475	rc2 = TRPMAssertTrap(pVCpu, Event.n.u8Vector, TRPM_HARDWARE_INT);
2476	AssertRC(rc2);
2477	break;
2478
2479	default:
2480	/* Exceptions and software interrupts can just be restarted. */
2481	break;
2482	}
2483	}
2484	rc = VERR_EM_INTERPRETER;
2485	break;
2486
2487	case SVM_EXIT_PAUSE:
2488	case SVM_EXIT_MWAIT_ARMED:
2489	rc = VERR_EM_INTERPRETER;
2490	break;
2491
2492	case SVM_EXIT_SHUTDOWN:
2493	rc = VINF_EM_RESET; /* Triple fault equals a reset. */
2494	break;
2495
2496	case SVM_EXIT_IDTR_READ:
2497	case SVM_EXIT_GDTR_READ:
2498	case SVM_EXIT_LDTR_READ:
2499	case SVM_EXIT_TR_READ:
2500	case SVM_EXIT_IDTR_WRITE:
2501	case SVM_EXIT_GDTR_WRITE:
2502	case SVM_EXIT_LDTR_WRITE:
2503	case SVM_EXIT_TR_WRITE:
2504	case SVM_EXIT_CR0_SEL_WRITE:
2505	default:
2506	/* Unexpected exit codes. */
2507	rc = VERR_EM_INTERNAL_ERROR;
2508	AssertMsgFailed(("Unexpected exit code %x\n", exitCode)); /* Can't happen. */
2509	break;
2510	}
2511
2512	end:
2513
2514	/* We now going back to ring-3, so clear the action flag. */
2515	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
2516
2517	/* Signal changes for the recompiler. */
2518	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR \| CPUM_CHANGED_LDTR \| CPUM_CHANGED_GDTR \| CPUM_CHANGED_IDTR \| CPUM_CHANGED_TR \| CPUM_CHANGED_HIDDEN_SEL_REGS);
2519
2520	/* If we executed vmrun and an external irq was pending, then we don't have to do a full sync the next time. */
2521	if (exitCode == SVM_EXIT_INTR)
2522	{
2523	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatPendingHostIrq);
2524	/* On the next entry we'll only sync the host context. */
2525	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_HOST_CONTEXT;
2526	}
2527	else
2528	{
2529	/* On the next entry we'll sync everything. */
2530	/** @todo we can do better than this */
2531	/* Not in the VINF_PGM_CHANGE_MODE though! */
2532	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_ALL;
2533	}
2534
2535	/* translate into a less severe return code */
2536	if (rc == VERR_EM_INTERPRETER)
2537	rc = VINF_EM_RAW_EMULATE_INSTR;
2538
2539	/* Just set the correct state here instead of trying to catch every goto above. */
2540	VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED, VMCPUSTATE_STARTED_EXEC);
2541
2542	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
2543	/* Restore interrupts if we exitted after disabling them. */
2544	if (uOldEFlags != ~(RTCCUINTREG)0)
2545	ASMSetFlags(uOldEFlags);
2546	#endif
2547
2548	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit2, x);
2549	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit1, x);
2550	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
2551	return VBOXSTRICTRC_TODO(rc);
2552	}
2553
2554	/**
2555	* Emulate simple mov tpr instruction
2556	*
2557	* @returns VBox status code.
2558	* @param pVM The VM to operate on.
2559	* @param pVCpu The VM CPU to operate on.
2560	* @param pCtx CPU context
2561	*/
2562	static int svmR0EmulateTprVMMCall(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2563	{
2564	int rc;
2565
2566	LogFlow(("Emulated VMMCall TPR access replacement at %RGv\n", pCtx->rip));
2567
2568	while (true)
2569	{
2570	bool fPending;
2571	uint8_t u8Tpr;
2572
2573	PHWACCMTPRPATCH pPatch = (PHWACCMTPRPATCH)RTAvloU32Get(&pVM->hwaccm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
2574	if (!pPatch)
2575	break;
2576
2577	switch(pPatch->enmType)
2578	{
2579	case HWACCMTPRINSTR_READ:
2580	/* TPR caching in CR8 */
2581	rc = PDMApicGetTPR(pVCpu, &u8Tpr, &fPending);
2582	AssertRC(rc);
2583
2584	rc = DISWriteReg32(CPUMCTX2CORE(pCtx), pPatch->uDstOperand, u8Tpr);
2585	AssertRC(rc);
2586
2587	LogFlow(("Emulated read successfully\n"));
2588	pCtx->rip += pPatch->cbOp;
2589	break;
2590
2591	case HWACCMTPRINSTR_WRITE_REG:
2592	case HWACCMTPRINSTR_WRITE_IMM:
2593	/* Fetch the new TPR value */
2594	if (pPatch->enmType == HWACCMTPRINSTR_WRITE_REG)
2595	{
2596	uint32_t val;
2597
2598	rc = DISFetchReg32(CPUMCTX2CORE(pCtx), pPatch->uSrcOperand, &val);
2599	AssertRC(rc);
2600	u8Tpr = val;
2601	}
2602	else
2603	u8Tpr = (uint8_t)pPatch->uSrcOperand;
2604
2605	rc = PDMApicSetTPR(pVCpu, u8Tpr);
2606	AssertRC(rc);
2607	LogFlow(("Emulated write successfully\n"));
2608	pCtx->rip += pPatch->cbOp;
2609	break;
2610	default:
2611	AssertMsgFailedReturn(("Unexpected type %d\n", pPatch->enmType), VERR_INTERNAL_ERROR);
2612	}
2613	}
2614	return VINF_SUCCESS;
2615	}
2616
2617
2618	/**
2619	* Enters the AMD-V session
2620	*
2621	* @returns VBox status code.
2622	* @param pVM The VM to operate on.
2623	* @param pVCpu The VM CPU to operate on.
2624	* @param pCpu CPU info struct
2625	*/
2626	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHMGLOBLCPUINFO pCpu)
2627	{
2628	Assert(pVM->hwaccm.s.svm.fSupported);
2629
2630	LogFlow(("SVMR0Enter cpu%d last=%d asid=%d\n", pCpu->idCpu, pVCpu->hwaccm.s.idLastCpu, pVCpu->hwaccm.s.uCurrentASID));
2631	pVCpu->hwaccm.s.fResumeVM = false;
2632
2633	/* Force to reload LDTR, so we'll execute VMLoad to load additional guest state. */
2634	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_LDTR;
2635
2636	return VINF_SUCCESS;
2637	}
2638
2639
2640	/**
2641	* Leaves the AMD-V session
2642	*
2643	* @returns VBox status code.
2644	* @param pVM The VM to operate on.
2645	* @param pVCpu The VM CPU to operate on.
2646	* @param pCtx CPU context
2647	*/
2648	VMMR0DECL(int) SVMR0Leave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2649	{
2650	SVM_VMCB pVMCB = (SVM_VMCB )pVCpu->hwaccm.s.svm.pVMCB;
2651
2652	Assert(pVM->hwaccm.s.svm.fSupported);
2653
2654	#ifdef DEBUG
2655	if (CPUMIsHyperDebugStateActive(pVCpu))
2656	{
2657	CPUMR0LoadHostDebugState(pVM, pVCpu);
2658	}
2659	else
2660	#endif
2661	/* Save the guest debug state if necessary. */
2662	if (CPUMIsGuestDebugStateActive(pVCpu))
2663	{
2664	CPUMR0SaveGuestDebugState(pVM, pVCpu, pCtx, false /* skip DR6 */);
2665
2666	/* Intercept all DRx reads and writes again. Changed later on. */
2667	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
2668	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
2669
2670	/* Resync the debug registers the next time. */
2671	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
2672	}
2673	else
2674	Assert(pVMCB->ctrl.u16InterceptRdDRx == 0xFFFF && pVMCB->ctrl.u16InterceptWrDRx == 0xFFFF);
2675
2676	return VINF_SUCCESS;
2677	}
2678
2679
2680	static int svmR0InterpretInvlPg(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2681	{
2682	OP_PARAMVAL param1;
2683	RTGCPTR addr;
2684
2685	int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->param1, &param1, PARAM_SOURCE);
2686	if(RT_FAILURE(rc))
2687	return VERR_EM_INTERPRETER;
2688
2689	switch(param1.type)
2690	{
2691	case PARMTYPE_IMMEDIATE:
2692	case PARMTYPE_ADDRESS:
2693	if(!(param1.flags & (PARAM_VAL32\|PARAM_VAL64)))
2694	return VERR_EM_INTERPRETER;
2695	addr = param1.val.val64;
2696	break;
2697
2698	default:
2699	return VERR_EM_INTERPRETER;
2700	}
2701
2702	/** @todo is addr always a flat linear address or ds based
2703	* (in absence of segment override prefixes)????
2704	*/
2705	rc = PGMInvalidatePage(pVCpu, addr);
2706	if (RT_SUCCESS(rc))
2707	return VINF_SUCCESS;
2708
2709	AssertRC(rc);
2710	return rc;
2711	}
2712
2713	/**
2714	* Interprets INVLPG
2715	*
2716	* @returns VBox status code.
2717	* @retval VINF_* Scheduling instructions.
2718	* @retval VERR_EM_INTERPRETER Something we can't cope with.
2719	* @retval VERR_* Fatal errors.
2720	*
2721	* @param pVM The VM handle.
2722	* @param pRegFrame The register frame.
2723	* @param ASID Tagged TLB id for the guest
2724	*
2725	* Updates the EIP if an instruction was executed successfully.
2726	*/
2727	static int svmR0InterpretInvpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2728	{
2729	/*
2730	* Only allow 32 & 64 bits code.
2731	*/
2732	DISCPUMODE enmMode = SELMGetCpuModeFromSelector(pVM, pRegFrame->eflags, pRegFrame->cs, &pRegFrame->csHid);
2733	if (enmMode != CPUMODE_16BIT)
2734	{
2735	RTGCPTR pbCode;
2736	int rc = SELMValidateAndConvertCSAddr(pVM, pRegFrame->eflags, pRegFrame->ss, pRegFrame->cs,
2737	&pRegFrame->csHid, (RTGCPTR)pRegFrame->rip, &pbCode);
2738	if (RT_SUCCESS(rc))
2739	{
2740	uint32_t cbOp;
2741	PDISCPUSTATE pDis = &pVCpu->hwaccm.s.DisState;
2742
2743	pDis->mode = enmMode;
2744	rc = EMInterpretDisasOneEx(pVM, pVCpu, pbCode, pRegFrame, pDis, &cbOp);
2745	Assert(RT_FAILURE(rc) \|\| pDis->pCurInstr->opcode == OP_INVLPG);
2746	if (RT_SUCCESS(rc) && pDis->pCurInstr->opcode == OP_INVLPG)
2747	{
2748	Assert(cbOp == pDis->opsize);
2749	rc = svmR0InterpretInvlPg(pVCpu, pDis, pRegFrame, uASID);
2750	if (RT_SUCCESS(rc))
2751	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
2752
2753	return rc;
2754	}
2755	}
2756	}
2757	return VERR_EM_INTERPRETER;
2758	}
2759
2760
2761	/**
2762	* Invalidates a guest page
2763	*
2764	* @returns VBox status code.
2765	* @param pVM The VM to operate on.
2766	* @param pVCpu The VM CPU to operate on.
2767	* @param GCVirt Page to invalidate
2768	*/
2769	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
2770	{
2771	bool fFlushPending = pVM->hwaccm.s.svm.fAlwaysFlushTLB \| VMCPU_FF_ISSET(pVCpu, VMCPU_FF_TLB_FLUSH);
2772
2773	/* Skip it if a TLB flush is already pending. */
2774	if (!fFlushPending)
2775	{
2776	SVM_VMCB *pVMCB;
2777
2778	Log2(("SVMR0InvalidatePage %RGv\n", GCVirt));
2779	AssertReturn(pVM, VERR_INVALID_PARAMETER);
2780	Assert(pVM->hwaccm.s.svm.fSupported);
2781
2782	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
2783	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
2784
2785	#if HC_ARCH_BITS == 32
2786	/* If we get a flush in 64 bits guest mode, then force a full TLB flush. Invlpga takes only 32 bits addresses. */
2787	if (CPUMIsGuestInLongMode(pVCpu))
2788	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
2789	else
2790	#endif
2791	SVMR0InvlpgA(GCVirt, pVMCB->ctrl.TLBCtrl.n.u32ASID);
2792	}
2793	return VINF_SUCCESS;
2794	}
2795
2796
2797	#if 0 /* obsolete, but left here for clarification. */
2798	/**
2799	* Invalidates a guest page by physical address
2800	*
2801	* @returns VBox status code.
2802	* @param pVM The VM to operate on.
2803	* @param pVCpu The VM CPU to operate on.
2804	* @param GCPhys Page to invalidate
2805	*/
2806	VMMR0DECL(int) SVMR0InvalidatePhysPage(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys)
2807	{
2808	Assert(pVM->hwaccm.s.fNestedPaging);
2809	/* invlpga only invalidates TLB entries for guest virtual addresses; we have no choice but to force a TLB flush here. */
2810	VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
2811	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBInvlpga);
2812	return VINF_SUCCESS;
2813	}
2814	#endif
2815
2816	#if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
2817	/**
2818	* Prepares for and executes VMRUN (64 bits guests from a 32 bits hosts).
2819	*
2820	* @returns VBox status code.
2821	* @param pVMCBHostPhys Physical address of host VMCB.
2822	* @param pVMCBPhys Physical address of the VMCB.
2823	* @param pCtx Guest context.
2824	* @param pVM The VM to operate on.
2825	* @param pVCpu The VMCPU to operate on.
2826	*/
2827	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS pVMCBHostPhys, RTHCPHYS pVMCBPhys, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
2828	{
2829	uint32_t aParam[4];
2830
2831	aParam[0] = (uint32_t)(pVMCBHostPhys); /* Param 1: pVMCBHostPhys - Lo. */
2832	aParam[1] = (uint32_t)(pVMCBHostPhys >> 32); /* Param 1: pVMCBHostPhys - Hi. */
2833	aParam[2] = (uint32_t)(pVMCBPhys); /* Param 2: pVMCBPhys - Lo. */
2834	aParam[3] = (uint32_t)(pVMCBPhys >> 32); /* Param 2: pVMCBPhys - Hi. */
2835
2836	return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, pVM->hwaccm.s.pfnSVMGCVMRun64, 4, &aParam[0]);
2837	}
2838
2839	/**
2840	* Executes the specified handler in 64 mode
2841	*
2842	* @returns VBox status code.
2843	* @param pVM The VM to operate on.
2844	* @param pVCpu The VMCPU to operate on.
2845	* @param pCtx Guest context
2846	* @param pfnHandler RC handler
2847	* @param cbParam Number of parameters
2848	* @param paParam Array of 32 bits parameters
2849	*/
2850	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, RTRCPTR pfnHandler, uint32_t cbParam, uint32_t *paParam)
2851	{
2852	int rc;
2853	RTHCUINTREG uOldEFlags;
2854
2855	Assert(pfnHandler);
2856
2857	/* Disable interrupts. */
2858	uOldEFlags = ASMIntDisableFlags();
2859
2860	CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
2861	CPUMSetHyperEIP(pVCpu, pfnHandler);
2862	for (int i=(int)cbParam-1;i>=0;i--)
2863	CPUMPushHyper(pVCpu, paParam[i]);
2864
2865	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatWorldSwitch3264, z);
2866	/* Call switcher. */
2867	rc = pVM->hwaccm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
2868	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatWorldSwitch3264, z);
2869
2870	ASMSetFlags(uOldEFlags);
2871	return rc;
2872	}
2873
2874	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */

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source: vbox/trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp@ 37655

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