HWSVMR0.cpp@ 5448

Last change on this file since 5448 was 5447, checked in by vboxsync, 17 years ago
Bugfix for rare cases where a pending interrupt is cleared behind our back
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File size: 60.2 KB

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1	/* $Id: HWSVMR0.cpp 5447 2007-10-23 16:01:08Z vboxsync $ */
2	/** @file
3	* HWACCM SVM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 innotek GmbH
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 as published by the Free Software Foundation,
13	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14	* distribution. VirtualBox OSE is distributed in the hope that it will
15	* be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_HWACCM
23	#include <VBox/hwaccm.h>
24	#include "HWACCMInternal.h"
25	#include <VBox/vm.h>
26	#include <VBox/x86.h>
27	#include <VBox/hwacc_svm.h>
28	#include <VBox/pgm.h>
29	#include <VBox/pdm.h>
30	#include <VBox/err.h>
31	#include <VBox/log.h>
32	#include <VBox/selm.h>
33	#include <VBox/iom.h>
34	#include <VBox/dis.h>
35	#include <VBox/dbgf.h>
36	#include <VBox/disopcode.h>
37	#include <iprt/param.h>
38	#include <iprt/assert.h>
39	#include <iprt/asm.h>
40	#include "HWSVMR0.h"
41
42	static int SVMR0InterpretInvpg(PVM pVM, PCPUMCTXCORE pRegFrame, uint32_t uASID);
43
44	/**
45	* Sets up and activates SVM
46	*
47	* @returns VBox status code.
48	* @param pVM The VM to operate on.
49	*/
50	HWACCMR0DECL(int) SVMR0Setup(PVM pVM)
51	{
52	int rc = VINF_SUCCESS;
53	SVM_VMCB *pVMCB;
54
55	if (pVM == NULL)
56	return VERR_INVALID_PARAMETER;
57
58	/* Setup AMD SVM. */
59	Assert(pVM->hwaccm.s.svm.fSupported);
60
61	pVMCB = (SVM_VMCB *)pVM->hwaccm.s.svm.pVMCB;
62	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
63
64	/* Program the control fields. Most of them never have to be changed again. */
65	/* CR0/3/4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
66	/** @note CR0 & CR4 can be safely read when guest and shadow copies are identical. */
67	pVMCB->ctrl.u16InterceptRdCRx = BIT(0) \| BIT(3) \| BIT(4) \| BIT(8);
68
69	/*
70	* CR0/3/4 writes must be intercepted for obvious reasons.
71	*/
72	pVMCB->ctrl.u16InterceptWrCRx = BIT(0) \| BIT(3) \| BIT(4) \| BIT(8);
73
74	/* Intercept all DRx reads and writes. */
75	pVMCB->ctrl.u16InterceptRdDRx = BIT(0) \| BIT(1) \| BIT(2) \| BIT(3) \| BIT(4) \| BIT(5) \| BIT(6) \| BIT(7);
76	pVMCB->ctrl.u16InterceptWrDRx = BIT(0) \| BIT(1) \| BIT(2) \| BIT(3) \| BIT(4) \| BIT(5) \| BIT(6) \| BIT(7);
77
78	/* Currently we don't care about DRx reads or writes. DRx registers are trashed.
79	* All breakpoints are automatically cleared when the VM exits.
80	*/
81
82	/** @todo nested paging */
83	/* Intercept #NM only; #PF is not relevant due to nested paging (we get a seperate exit code (SVM_EXIT_NPF) for
84	* pagefaults that need our attention).
85	*/
86	pVMCB->ctrl.u32InterceptException = HWACCM_SVM_TRAP_MASK;
87
88	pVMCB->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR
89	\| SVM_CTRL1_INTERCEPT_VINTR
90	\| SVM_CTRL1_INTERCEPT_NMI
91	\| SVM_CTRL1_INTERCEPT_SMI
92	\| SVM_CTRL1_INTERCEPT_INIT
93	\| SVM_CTRL1_INTERCEPT_CR0 /** @todo redundant? */
94	\| SVM_CTRL1_INTERCEPT_RDPMC
95	\| SVM_CTRL1_INTERCEPT_CPUID
96	\| SVM_CTRL1_INTERCEPT_RSM
97	\| SVM_CTRL1_INTERCEPT_HLT
98	\| SVM_CTRL1_INTERCEPT_INOUT_BITMAP
99	\| SVM_CTRL1_INTERCEPT_MSR_SHADOW
100	\| SVM_CTRL1_INTERCEPT_INVLPG
101	\| SVM_CTRL1_INTERCEPT_INVLPGA /* AMD only */
102	\| SVM_CTRL1_INTERCEPT_SHUTDOWN /* fatal */
103	\| SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Legacy FPU FERR handling. */
104	;
105	pVMCB->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* required */
106	\| SVM_CTRL2_INTERCEPT_VMMCALL
107	\| SVM_CTRL2_INTERCEPT_VMLOAD
108	\| SVM_CTRL2_INTERCEPT_VMSAVE
109	\| SVM_CTRL2_INTERCEPT_STGI
110	\| SVM_CTRL2_INTERCEPT_CLGI
111	\| SVM_CTRL2_INTERCEPT_SKINIT
112	\| SVM_CTRL2_INTERCEPT_RDTSCP /* AMD only; we don't support this one */
113	;
114	Log(("pVMCB->ctrl.u32InterceptException = %x\n", pVMCB->ctrl.u32InterceptException));
115	Log(("pVMCB->ctrl.u32InterceptCtrl1 = %x\n", pVMCB->ctrl.u32InterceptCtrl1));
116	Log(("pVMCB->ctrl.u32InterceptCtrl2 = %x\n", pVMCB->ctrl.u32InterceptCtrl2));
117
118	/* Virtualize masking of INTR interrupts. */
119	pVMCB->ctrl.IntCtrl.n.u1VIrqMasking = 1;
120
121	/* Set IO and MSR bitmap addresses. */
122	pVMCB->ctrl.u64IOPMPhysAddr = pVM->hwaccm.s.svm.pIOBitmapPhys;
123	pVMCB->ctrl.u64MSRPMPhysAddr = pVM->hwaccm.s.svm.pMSRBitmapPhys;
124
125	/* Enable nested paging. */
126	/** @todo how to detect support for this?? */
127	pVMCB->ctrl.u64NestedPaging = 0; /** @todo SVM_NESTED_PAGING_ENABLE; */
128
129	/* No LBR virtualization. */
130	pVMCB->ctrl.u64LBRVirt = 0;
131
132	return rc;
133	}
134
135
136	/**
137	* Injects an event (trap or external interrupt)
138	*
139	* @param pVM The VM to operate on.
140	* @param pVMCB SVM control block
141	* @param pCtx CPU Context
142	* @param pIntInfo SVM interrupt info
143	*/
144	inline void SVMR0InjectEvent(PVM pVM, SVM_VMCB pVMCB, CPUMCTX pCtx, SVM_EVENT* pEvent)
145	{
146	#ifdef VBOX_STRICT
147	if (pEvent->n.u8Vector == 0xE)
148	Log(("SVM: Inject int %d at %VGv error code=%08x CR2=%08x intInfo=%08x\n", pEvent->n.u8Vector, pCtx->eip, pEvent->n.u32ErrorCode, pCtx->cr2, pEvent->au64[0]));
149	else
150	if (pEvent->n.u8Vector < 0x20)
151	Log(("SVM: Inject int %d at %VGv error code=%08x\n", pEvent->n.u8Vector, pCtx->eip, pEvent->n.u32ErrorCode));
152	else
153	{
154	Log(("INJ-EI: %x at %VGv\n", pEvent->n.u8Vector, pCtx->eip));
155	Assert(!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS));
156	Assert(pCtx->eflags.u32 & X86_EFL_IF);
157	}
158	#endif
159
160	/* Set event injection state. */
161	pVMCB->ctrl.EventInject.au64[0] = pEvent->au64[0];
162	}
163
164
165	/**
166	* Checks for pending guest interrupts and injects them
167	*
168	* @returns VBox status code.
169	* @param pVM The VM to operate on.
170	* @param pVMCB SVM control block
171	* @param pCtx CPU Context
172	*/
173	static int SVMR0CheckPendingInterrupt(PVM pVM, SVM_VMCB pVMCB, CPUMCTX pCtx)
174	{
175	int rc;
176
177	/* Dispatch any pending interrupts. (injected before, but a VM exit occurred prematurely) */
178	if (pVM->hwaccm.s.Event.fPending)
179	{
180	SVM_EVENT Event;
181
182	Log(("Reinjecting event %08x %08x at %VGv\n", pVM->hwaccm.s.Event.intInfo, pVM->hwaccm.s.Event.errCode, pCtx->eip));
183	STAM_COUNTER_INC(&pVM->hwaccm.s.StatIntReinject);
184	Event.au64[0] = pVM->hwaccm.s.Event.intInfo;
185	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
186
187	pVM->hwaccm.s.Event.fPending = false;
188	return VINF_SUCCESS;
189	}
190
191	/* When external interrupts are pending, we should exit the VM when IF is set. */
192	if ( !TRPMHasTrap(pVM)
193	&& VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
194	{
195	if (!(pCtx->eflags.u32 & X86_EFL_IF))
196	{
197	Log2(("Enable irq window exit!\n"));
198	/** @todo use virtual interrupt method to inject a pending irq; dispatched as soon as guest.IF is set. */
199	//// pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
200	//// AssertRC(rc);
201	}
202	else
203	if (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
204	{
205	uint8_t u8Interrupt;
206
207	rc = PDMGetInterrupt(pVM, &u8Interrupt);
208	Log(("Dispatch interrupt: u8Interrupt=%x (%d) rc=%Vrc\n", u8Interrupt, u8Interrupt, rc));
209	if (VBOX_SUCCESS(rc))
210	{
211	rc = TRPMAssertTrap(pVM, u8Interrupt, TRPM_HARDWARE_INT);
212	AssertRC(rc);
213	}
214	else
215	{
216	/* Can only happen in rare cases where a pending interrupt is cleared behind our back */
217	Assert(!VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)));
218	STAM_COUNTER_INC(&pVM->hwaccm.s.StatSwitchGuestIrq);
219	/* Just continue */
220	}
221	}
222	else
223	Log(("Pending interrupt blocked at %VGv by VM_FF_INHIBIT_INTERRUPTS!!\n", pCtx->eip));
224	}
225
226	#ifdef VBOX_STRICT
227	if (TRPMHasTrap(pVM))
228	{
229	uint8_t u8Vector;
230	rc = TRPMQueryTrapAll(pVM, &u8Vector, 0, 0, 0);
231	AssertRC(rc);
232	}
233	#endif
234
235	if ( pCtx->eflags.u32 & X86_EFL_IF
236	&& (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
237	&& TRPMHasTrap(pVM)
238	)
239	{
240	uint8_t u8Vector;
241	int rc;
242	TRPMEVENT enmType;
243	SVM_EVENT Event;
244	uint32_t u32ErrorCode;
245
246	Event.au64[0] = 0;
247
248	/* If a new event is pending, then dispatch it now. */
249	rc = TRPMQueryTrapAll(pVM, &u8Vector, &enmType, &u32ErrorCode, 0);
250	AssertRC(rc);
251	Assert(pCtx->eflags.Bits.u1IF == 1 \|\| enmType == TRPM_TRAP);
252	Assert(enmType != TRPM_SOFTWARE_INT);
253
254	/* Clear the pending trap. */
255	rc = TRPMResetTrap(pVM);
256	AssertRC(rc);
257
258	Event.n.u8Vector = u8Vector;
259	Event.n.u1Valid = 1;
260	Event.n.u32ErrorCode = u32ErrorCode;
261
262	if (enmType == TRPM_TRAP)
263	{
264	switch (u8Vector) {
265	case 8:
266	case 10:
267	case 11:
268	case 12:
269	case 13:
270	case 14:
271	case 17:
272	/* Valid error codes. */
273	Event.n.u1ErrorCodeValid = 1;
274	break;
275	default:
276	break;
277	}
278	if (u8Vector == X86_XCPT_NMI)
279	Event.n.u3Type = SVM_EVENT_NMI;
280	else
281	Event.n.u3Type = SVM_EVENT_EXCEPTION;
282	}
283	else
284	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
285
286	STAM_COUNTER_INC(&pVM->hwaccm.s.StatIntInject);
287	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
288	} /* if (interrupts can be dispatched) */
289
290	return VINF_SUCCESS;
291	}
292
293
294	/**
295	* Loads the guest state
296	*
297	* @returns VBox status code.
298	* @param pVM The VM to operate on.
299	* @param pCtx Guest context
300	*/
301	HWACCMR0DECL(int) SVMR0LoadGuestState(PVM pVM, CPUMCTX *pCtx)
302	{
303	RTGCUINTPTR val;
304	SVM_VMCB *pVMCB;
305
306	if (pVM == NULL)
307	return VERR_INVALID_PARAMETER;
308
309	/* Setup AMD SVM. */
310	Assert(pVM->hwaccm.s.svm.fSupported);
311
312	pVMCB = (SVM_VMCB *)pVM->hwaccm.s.svm.pVMCB;
313	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
314
315	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
316	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SEGMENT_REGS)
317	{
318	SVM_WRITE_SELREG(CS, cs);
319	SVM_WRITE_SELREG(SS, ss);
320	SVM_WRITE_SELREG(DS, ds);
321	SVM_WRITE_SELREG(ES, es);
322	SVM_WRITE_SELREG(FS, fs);
323	SVM_WRITE_SELREG(GS, gs);
324	}
325
326	/* Guest CPU context: LDTR. */
327	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_LDTR)
328	{
329	SVM_WRITE_SELREG(LDTR, ldtr);
330	}
331
332	/* Guest CPU context: TR. */
333	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_TR)
334	{
335	SVM_WRITE_SELREG(TR, tr);
336	}
337
338	/* Guest CPU context: GDTR. */
339	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_GDTR)
340	{
341	pVMCB->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
342	pVMCB->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
343	}
344
345	/* Guest CPU context: IDTR. */
346	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_IDTR)
347	{
348	pVMCB->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
349	pVMCB->guest.IDTR.u64Base = pCtx->idtr.pIdt;
350	}
351
352	/*
353	* Sysenter MSRs
354	*/
355	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SYSENTER_MSR)
356	{
357	pVMCB->guest.u64SysEnterCS = pCtx->SysEnter.cs;
358	pVMCB->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
359	pVMCB->guest.u64SysEnterESP = pCtx->SysEnter.esp;
360	}
361
362	/* Control registers */
363	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR0)
364	{
365	val = pCtx->cr0;
366	if (CPUMIsGuestFPUStateActive(pVM) == false)
367	{
368	/* Always use #NM exceptions to load the FPU/XMM state on demand. */
369	val \|= X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
370	}
371	else
372	{
373	Assert(pVM->hwaccm.s.svm.fResumeVM == true);
374	/** @todo check if we support the old style mess correctly. */
375	if (!(val & X86_CR0_NE))
376	{
377	Log(("Forcing X86_CR0_NE!!!\n"));
378
379	/* Also catch floating point exceptions as we need to report them to the guest in a different way. */
380	if (!pVM->hwaccm.s.fFPUOldStyleOverride)
381	{
382	pVMCB->ctrl.u32InterceptException \|= BIT(16);
383	pVM->hwaccm.s.fFPUOldStyleOverride = true;
384	}
385	}
386	val \|= X86_CR0_NE; /* always turn on the native mechanism to report FPU errors (old style uses interrupts) */
387	}
388	if (!(val & X86_CR0_CD))
389	val &= ~X86_CR0_NW; /* Illegal when cache is turned on. */
390
391	val \|= X86_CR0_PG; /* Paging is always enabled; even when the guest is running in real mode or PE without paging. */
392	pVMCB->guest.u64CR0 = val;
393	}
394	/* CR2 as well */
395	pVMCB->guest.u64CR2 = pCtx->cr2;
396
397	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR3)
398	{
399	/* Save our shadow CR3 register. */
400	pVMCB->guest.u64CR3 = PGMGetHyperCR3(pVM);
401	}
402
403	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR4)
404	{
405	val = pCtx->cr4;
406	switch(pVM->hwaccm.s.enmShadowMode)
407	{
408	case PGMMODE_REAL:
409	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
410	AssertFailed();
411	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
412
413	case PGMMODE_32_BIT: /* 32-bit paging. */
414	break;
415
416	case PGMMODE_PAE: /* PAE paging. */
417	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
418	/** @todo use normal 32 bits paging */
419	val \|= X86_CR4_PAE;
420	break;
421
422	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
423	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
424	AssertFailed();
425	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
426
427	default: /* shut up gcc */
428	AssertFailed();
429	return VERR_PGM_UNSUPPORTED_HOST_PAGING_MODE;
430	}
431	pVMCB->guest.u64CR4 = val;
432	}
433
434	/* Debug registers. */
435	if (pVM->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_DEBUG)
436	{
437	/** @todo DR0-6 */
438	val = pCtx->dr7;
439	val &= ~(BIT(11) \| BIT(12) \| BIT(14) \| BIT(15)); /* must be zero */
440	val \|= 0x400; /* must be one */
441	#ifdef VBOX_STRICT
442	val = 0x400;
443	#endif
444	pVMCB->guest.u64DR7 = val;
445
446	pVMCB->guest.u64DR6 = pCtx->dr6;
447	}
448
449	/* EIP, ESP and EFLAGS */
450	pVMCB->guest.u64RIP = pCtx->eip;
451	pVMCB->guest.u64RSP = pCtx->esp;
452	pVMCB->guest.u64RFlags = pCtx->eflags.u32;
453
454	/* Set CPL */
455	pVMCB->guest.u8CPL = pCtx->ssHid.Attr.n.u2Dpl;
456
457	/* RAX/EAX too, as VMRUN uses RAX as an implicit parameter. */
458	pVMCB->guest.u64RAX = pCtx->eax;
459
460	/* vmrun will fail otherwise. */
461	pVMCB->guest.u64EFER = MSR_K6_EFER_SVME;
462
463	/** @note We can do more complex things with tagged TLBs. */
464	pVMCB->ctrl.TLBCtrl.n.u32ASID = 1;
465
466	/** TSC offset. */
467	if (TMCpuTickCanUseRealTSC(pVM, &pVMCB->ctrl.u64TSCOffset))
468	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
469	else
470	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
471
472	/** @todo 64 bits stuff (?):
473	* - STAR
474	* - LSTAR
475	* - CSTAR
476	* - SFMASK
477	* - KernelGSBase
478	*/
479
480	#ifdef DEBUG
481	/* Intercept X86_XCPT_DB if stepping is enabled */
482	if (DBGFIsStepping(pVM))
483	pVMCB->ctrl.u32InterceptException \|= BIT(1);
484	else
485	pVMCB->ctrl.u32InterceptException &= ~BIT(1);
486	#endif
487
488	/* Done. */
489	pVM->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_ALL_GUEST;
490
491	return VINF_SUCCESS;
492	}
493
494
495	/**
496	* Runs guest code in an SVM VM.
497	*
498	* @todo This can be much more efficient, when we only sync that which has actually changed. (this is the first attempt only)
499	*
500	* @returns VBox status code.
501	* @param pVM The VM to operate on.
502	* @param pCtx Guest context
503	*/
504	HWACCMR0DECL(int) SVMR0RunGuestCode(PVM pVM, CPUMCTX *pCtx)
505	{
506	int rc = VINF_SUCCESS;
507	uint64_t exitCode = (uint64_t)SVM_EXIT_INVALID;
508	SVM_VMCB *pVMCB;
509	bool fForceTLBFlush = false;
510	bool fGuestStateSynced = false;
511	unsigned cResume = 0;
512
513	STAM_PROFILE_ADV_START(&pVM->hwaccm.s.StatEntry, x);
514
515	pVMCB = (SVM_VMCB *)pVM->hwaccm.s.svm.pVMCB;
516	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
517
518	/* We can jump to this point to resume execution after determining that a VM-exit is innocent.
519	*/
520	ResumeExecution:
521	/* Safety precaution; looping for too long here can have a very bad effect on the host */
522	if (++cResume > HWACCM_MAX_RESUME_LOOPS)
523	{
524	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitMaxResume);
525	rc = VINF_EM_RAW_INTERRUPT;
526	goto end;
527	}
528
529	/* Check for irq inhibition due to instruction fusing (sti, mov ss). */
530	if (VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
531	{
532	Log(("VM_FF_INHIBIT_INTERRUPTS at %VGv successor %VGv\n", pCtx->eip, EMGetInhibitInterruptsPC(pVM)));
533	if (pCtx->eip != EMGetInhibitInterruptsPC(pVM))
534	{
535	/** @note we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here.
536	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
537	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
538	* break the guest. Sounds very unlikely, but such timing sensitive problem are not as rare as you might think.
539	*/
540	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
541	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
542	pVMCB->ctrl.u64IntShadow = 0;
543	}
544	}
545	else
546	{
547	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
548	pVMCB->ctrl.u64IntShadow = 0;
549	}
550
551	/* Check for pending actions that force us to go back to ring 3. */
552	#ifdef DEBUG
553	/* Intercept X86_XCPT_DB if stepping is enabled */
554	if (!DBGFIsStepping(pVM))
555	#endif
556	{
557	if (VM_FF_ISPENDING(pVM, VM_FF_TO_R3 \| VM_FF_TIMER))
558	{
559	VM_FF_CLEAR(pVM, VM_FF_TO_R3);
560	STAM_COUNTER_INC(&pVM->hwaccm.s.StatSwitchToR3);
561	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
562	rc = VINF_EM_RAW_TO_R3;
563	goto end;
564	}
565	}
566
567	/* Pending request packets might contain actions that need immediate attention, such as pending hardware interrupts. */
568	if (VM_FF_ISPENDING(pVM, VM_FF_REQUEST))
569	{
570	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
571	rc = VINF_EM_PENDING_REQUEST;
572	goto end;
573	}
574
575	/* When external interrupts are pending, we should exit the VM when IF is set. */
576	/** @note after VM_FF_INHIBIT_INTERRUPTS check!!! */
577	rc = SVMR0CheckPendingInterrupt(pVM, pVMCB, pCtx);
578	if (VBOX_FAILURE(rc))
579	{
580	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
581	goto end;
582	}
583
584	/* Load the guest state */
585	rc = SVMR0LoadGuestState(pVM, pCtx);
586	if (rc != VINF_SUCCESS)
587	{
588	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatEntry, x);
589	goto end;
590	}
591	fGuestStateSynced = true;
592
593	/* All done! Let's start VM execution. */
594	STAM_PROFILE_ADV_START(&pVM->hwaccm.s.StatInGC, x);
595
596	/** Erratum #170 -> must force a TLB flush */
597	/** @todo supposed to be fixed in future by AMD */
598	fForceTLBFlush = true;
599
600	if ( pVM->hwaccm.s.svm.fResumeVM == false
601	\|\| fForceTLBFlush)
602	{
603	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = 1;
604	}
605	else
606	{
607	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = 0;
608	}
609	/* In case we execute a goto ResumeExecution later on. */
610	pVM->hwaccm.s.svm.fResumeVM = true;
611	fForceTLBFlush = false;
612
613	Assert(sizeof(pVM->hwaccm.s.svm.pVMCBPhys) == 8);
614	Assert(pVMCB->ctrl.u32InterceptCtrl2 == ( SVM_CTRL2_INTERCEPT_VMRUN /* required */
615	\| SVM_CTRL2_INTERCEPT_VMMCALL
616	\| SVM_CTRL2_INTERCEPT_VMLOAD
617	\| SVM_CTRL2_INTERCEPT_VMSAVE
618	\| SVM_CTRL2_INTERCEPT_STGI
619	\| SVM_CTRL2_INTERCEPT_CLGI
620	\| SVM_CTRL2_INTERCEPT_SKINIT
621	\| SVM_CTRL2_INTERCEPT_RDTSCP /* AMD only; we don't support this one */
622	));
623	Assert(pVMCB->ctrl.IntCtrl.n.u1VIrqMasking);
624	Assert(pVMCB->ctrl.u64IOPMPhysAddr == pVM->hwaccm.s.svm.pIOBitmapPhys);
625	Assert(pVMCB->ctrl.u64MSRPMPhysAddr == pVM->hwaccm.s.svm.pMSRBitmapPhys);
626	Assert(pVMCB->ctrl.u64NestedPaging == 0);
627	Assert(pVMCB->ctrl.u64LBRVirt == 0);
628
629	SVMVMRun(pVM->hwaccm.s.svm.pVMCBHostPhys, pVM->hwaccm.s.svm.pVMCBPhys, pCtx);
630	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatInGC, x);
631
632	/**
633	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
634	* 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
635	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
636	*/
637
638	STAM_PROFILE_ADV_START(&pVM->hwaccm.s.StatExit, x);
639
640	/* Reason for the VM exit */
641	exitCode = pVMCB->ctrl.u64ExitCode;
642
643	if (exitCode == (uint64_t)SVM_EXIT_INVALID) /* Invalid guest state. */
644	{
645	HWACCMDumpRegs(pCtx);
646	#ifdef DEBUG
647	Log(("ctrl.u16InterceptRdCRx %x\n", pVMCB->ctrl.u16InterceptRdCRx));
648	Log(("ctrl.u16InterceptWrCRx %x\n", pVMCB->ctrl.u16InterceptWrCRx));
649	Log(("ctrl.u16InterceptRdDRx %x\n", pVMCB->ctrl.u16InterceptRdDRx));
650	Log(("ctrl.u16InterceptWrDRx %x\n", pVMCB->ctrl.u16InterceptWrDRx));
651	Log(("ctrl.u32InterceptException %x\n", pVMCB->ctrl.u32InterceptException));
652	Log(("ctrl.u32InterceptCtrl1 %x\n", pVMCB->ctrl.u32InterceptCtrl1));
653	Log(("ctrl.u32InterceptCtrl2 %x\n", pVMCB->ctrl.u32InterceptCtrl2));
654	Log(("ctrl.u64IOPMPhysAddr %VX64\n", pVMCB->ctrl.u64IOPMPhysAddr));
655	Log(("ctrl.u64MSRPMPhysAddr %VX64\n", pVMCB->ctrl.u64MSRPMPhysAddr));
656	Log(("ctrl.u64TSCOffset %VX64\n", pVMCB->ctrl.u64TSCOffset));
657
658	Log(("ctrl.TLBCtrl.u32ASID %x\n", pVMCB->ctrl.TLBCtrl.n.u32ASID));
659	Log(("ctrl.TLBCtrl.u1TLBFlush %x\n", pVMCB->ctrl.TLBCtrl.n.u1TLBFlush));
660	Log(("ctrl.TLBCtrl.u7Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u7Reserved));
661	Log(("ctrl.TLBCtrl.u24Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u24Reserved));
662
663	Log(("ctrl.IntCtrl.u8VTPR %x\n", pVMCB->ctrl.IntCtrl.n.u8VTPR));
664	Log(("ctrl.IntCtrl.u1VIrqValid %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqValid));
665	Log(("ctrl.IntCtrl.u7Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved));
666	Log(("ctrl.IntCtrl.u4VIrqPriority %x\n", pVMCB->ctrl.IntCtrl.n.u4VIrqPriority));
667	Log(("ctrl.IntCtrl.u1IgnoreTPR %x\n", pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR));
668	Log(("ctrl.IntCtrl.u3Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u3Reserved));
669	Log(("ctrl.IntCtrl.u1VIrqMasking %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqMasking));
670	Log(("ctrl.IntCtrl.u7Reserved2 %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved2));
671	Log(("ctrl.IntCtrl.u8VIrqVector %x\n", pVMCB->ctrl.IntCtrl.n.u8VIrqVector));
672	Log(("ctrl.IntCtrl.u24Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u24Reserved));
673
674	Log(("ctrl.u64IntShadow %VX64\n", pVMCB->ctrl.u64IntShadow));
675	Log(("ctrl.u64ExitCode %VX64\n", pVMCB->ctrl.u64ExitCode));
676	Log(("ctrl.u64ExitInfo1 %VX64\n", pVMCB->ctrl.u64ExitInfo1));
677	Log(("ctrl.u64ExitInfo2 %VX64\n", pVMCB->ctrl.u64ExitInfo2));
678	Log(("ctrl.ExitIntInfo.u8Vector %x\n", pVMCB->ctrl.ExitIntInfo.n.u8Vector));
679	Log(("ctrl.ExitIntInfo.u3Type %x\n", pVMCB->ctrl.ExitIntInfo.n.u3Type));
680	Log(("ctrl.ExitIntInfo.u1ErrorCodeValid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
681	Log(("ctrl.ExitIntInfo.u19Reserved %x\n", pVMCB->ctrl.ExitIntInfo.n.u19Reserved));
682	Log(("ctrl.ExitIntInfo.u1Valid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1Valid));
683	Log(("ctrl.ExitIntInfo.u32ErrorCode %x\n", pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode));
684	Log(("ctrl.u64NestedPaging %VX64\n", pVMCB->ctrl.u64NestedPaging));
685	Log(("ctrl.EventInject.u8Vector %x\n", pVMCB->ctrl.EventInject.n.u8Vector));
686	Log(("ctrl.EventInject.u3Type %x\n", pVMCB->ctrl.EventInject.n.u3Type));
687	Log(("ctrl.EventInject.u1ErrorCodeValid %x\n", pVMCB->ctrl.EventInject.n.u1ErrorCodeValid));
688	Log(("ctrl.EventInject.u19Reserved %x\n", pVMCB->ctrl.EventInject.n.u19Reserved));
689	Log(("ctrl.EventInject.u1Valid %x\n", pVMCB->ctrl.EventInject.n.u1Valid));
690	Log(("ctrl.EventInject.u32ErrorCode %x\n", pVMCB->ctrl.EventInject.n.u32ErrorCode));
691
692	Log(("ctrl.u64HostCR3 %VX64\n", pVMCB->ctrl.u64HostCR3));
693	Log(("ctrl.u64LBRVirt %VX64\n", pVMCB->ctrl.u64LBRVirt));
694
695	Log(("guest.CS.u16Sel %04X\n", pVMCB->guest.CS.u16Sel));
696	Log(("guest.CS.u16Attr %04X\n", pVMCB->guest.CS.u16Attr));
697	Log(("guest.CS.u32Limit %X\n", pVMCB->guest.CS.u32Limit));
698	Log(("guest.CS.u64Base %VX64\n", pVMCB->guest.CS.u64Base));
699	Log(("guest.DS.u16Sel %04X\n", pVMCB->guest.DS.u16Sel));
700	Log(("guest.DS.u16Attr %04X\n", pVMCB->guest.DS.u16Attr));
701	Log(("guest.DS.u32Limit %X\n", pVMCB->guest.DS.u32Limit));
702	Log(("guest.DS.u64Base %VX64\n", pVMCB->guest.DS.u64Base));
703	Log(("guest.ES.u16Sel %04X\n", pVMCB->guest.ES.u16Sel));
704	Log(("guest.ES.u16Attr %04X\n", pVMCB->guest.ES.u16Attr));
705	Log(("guest.ES.u32Limit %X\n", pVMCB->guest.ES.u32Limit));
706	Log(("guest.ES.u64Base %VX64\n", pVMCB->guest.ES.u64Base));
707	Log(("guest.FS.u16Sel %04X\n", pVMCB->guest.FS.u16Sel));
708	Log(("guest.FS.u16Attr %04X\n", pVMCB->guest.FS.u16Attr));
709	Log(("guest.FS.u32Limit %X\n", pVMCB->guest.FS.u32Limit));
710	Log(("guest.FS.u64Base %VX64\n", pVMCB->guest.FS.u64Base));
711	Log(("guest.GS.u16Sel %04X\n", pVMCB->guest.GS.u16Sel));
712	Log(("guest.GS.u16Attr %04X\n", pVMCB->guest.GS.u16Attr));
713	Log(("guest.GS.u32Limit %X\n", pVMCB->guest.GS.u32Limit));
714	Log(("guest.GS.u64Base %VX64\n", pVMCB->guest.GS.u64Base));
715
716	Log(("guest.GDTR.u32Limit %X\n", pVMCB->guest.GDTR.u32Limit));
717	Log(("guest.GDTR.u64Base %VX64\n", pVMCB->guest.GDTR.u64Base));
718
719	Log(("guest.LDTR.u16Sel %04X\n", pVMCB->guest.LDTR.u16Sel));
720	Log(("guest.LDTR.u16Attr %04X\n", pVMCB->guest.LDTR.u16Attr));
721	Log(("guest.LDTR.u32Limit %X\n", pVMCB->guest.LDTR.u32Limit));
722	Log(("guest.LDTR.u64Base %VX64\n", pVMCB->guest.LDTR.u64Base));
723
724	Log(("guest.IDTR.u32Limit %X\n", pVMCB->guest.IDTR.u32Limit));
725	Log(("guest.IDTR.u64Base %VX64\n", pVMCB->guest.IDTR.u64Base));
726
727	Log(("guest.TR.u16Sel %04X\n", pVMCB->guest.TR.u16Sel));
728	Log(("guest.TR.u16Attr %04X\n", pVMCB->guest.TR.u16Attr));
729	Log(("guest.TR.u32Limit %X\n", pVMCB->guest.TR.u32Limit));
730	Log(("guest.TR.u64Base %VX64\n", pVMCB->guest.TR.u64Base));
731
732	Log(("guest.u8CPL %X\n", pVMCB->guest.u8CPL));
733	Log(("guest.u64CR0 %VX64\n", pVMCB->guest.u64CR0));
734	Log(("guest.u64CR2 %VX64\n", pVMCB->guest.u64CR2));
735	Log(("guest.u64CR3 %VX64\n", pVMCB->guest.u64CR3));
736	Log(("guest.u64CR4 %VX64\n", pVMCB->guest.u64CR4));
737	Log(("guest.u64DR6 %VX64\n", pVMCB->guest.u64DR6));
738	Log(("guest.u64DR7 %VX64\n", pVMCB->guest.u64DR7));
739
740	Log(("guest.u64RIP %VX64\n", pVMCB->guest.u64RIP));
741	Log(("guest.u64RSP %VX64\n", pVMCB->guest.u64RSP));
742	Log(("guest.u64RAX %VX64\n", pVMCB->guest.u64RAX));
743	Log(("guest.u64RFlags %VX64\n", pVMCB->guest.u64RFlags));
744
745	Log(("guest.u64SysEnterCS %VX64\n", pVMCB->guest.u64SysEnterCS));
746	Log(("guest.u64SysEnterEIP %VX64\n", pVMCB->guest.u64SysEnterEIP));
747	Log(("guest.u64SysEnterESP %VX64\n", pVMCB->guest.u64SysEnterESP));
748
749	Log(("guest.u64EFER %VX64\n", pVMCB->guest.u64EFER));
750	Log(("guest.u64STAR %VX64\n", pVMCB->guest.u64STAR));
751	Log(("guest.u64LSTAR %VX64\n", pVMCB->guest.u64LSTAR));
752	Log(("guest.u64CSTAR %VX64\n", pVMCB->guest.u64CSTAR));
753	Log(("guest.u64SFMASK %VX64\n", pVMCB->guest.u64SFMASK));
754	Log(("guest.u64KernelGSBase %VX64\n", pVMCB->guest.u64KernelGSBase));
755	Log(("guest.u64GPAT %VX64\n", pVMCB->guest.u64GPAT));
756	Log(("guest.u64DBGCTL %VX64\n", pVMCB->guest.u64DBGCTL));
757	Log(("guest.u64BR_FROM %VX64\n", pVMCB->guest.u64BR_FROM));
758	Log(("guest.u64BR_TO %VX64\n", pVMCB->guest.u64BR_TO));
759	Log(("guest.u64LASTEXCPFROM %VX64\n", pVMCB->guest.u64LASTEXCPFROM));
760	Log(("guest.u64LASTEXCPTO %VX64\n", pVMCB->guest.u64LASTEXCPTO));
761
762	#endif
763	rc = VERR_SVM_UNABLE_TO_START_VM;
764	goto end;
765	}
766
767	/* Let's first sync back eip, esp, and eflags. */
768	pCtx->eip = pVMCB->guest.u64RIP;
769	pCtx->esp = pVMCB->guest.u64RSP;
770	pCtx->eflags.u32 = pVMCB->guest.u64RFlags;
771	/* eax is saved/restore across the vmrun instruction */
772	pCtx->eax = pVMCB->guest.u64RAX;
773
774	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
775	SVM_READ_SELREG(SS, ss);
776	SVM_READ_SELREG(CS, cs);
777	SVM_READ_SELREG(DS, ds);
778	SVM_READ_SELREG(ES, es);
779	SVM_READ_SELREG(FS, fs);
780	SVM_READ_SELREG(GS, gs);
781
782	/** @note no reason to sync back the CRx and DRx registers. They can't be changed by the guest. */
783
784	/** @note NOW IT'S SAFE FOR LOGGING! */
785
786	/* Take care of instruction fusing (sti, mov ss) */
787	if (pVMCB->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
788	{
789	Log(("uInterruptState %x eip=%VGv\n", pVMCB->ctrl.u64IntShadow, pCtx->eip));
790	EMSetInhibitInterruptsPC(pVM, pCtx->eip);
791	}
792	else
793	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
794
795	Log2(("exitCode = %x\n", exitCode));
796
797	/* Check if an injected event was interrupted prematurely. */
798	pVM->hwaccm.s.Event.intInfo = pVMCB->ctrl.ExitIntInfo.au64[0];
799	if ( pVMCB->ctrl.ExitIntInfo.n.u1Valid
800	&& pVMCB->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT /* we don't care about 'int xx' as the instruction will be restarted. */)
801	{
802	Log(("Pending inject %VX64 at %08x exit=%08x\n", pVM->hwaccm.s.Event.intInfo, pCtx->eip, exitCode));
803	pVM->hwaccm.s.Event.fPending = true;
804	/* Error code present? (redundant) */
805	if (pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid)
806	{
807	pVM->hwaccm.s.Event.errCode = pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode;
808	}
809	else
810	pVM->hwaccm.s.Event.errCode = 0;
811	}
812	STAM_COUNTER_INC(&pVM->hwaccm.s.pStatExitReasonR0[exitCode & MASK_EXITREASON_STAT]);
813
814	/* Deal with the reason of the VM-exit. */
815	switch (exitCode)
816	{
817	case SVM_EXIT_EXCEPTION_0: case SVM_EXIT_EXCEPTION_1: case SVM_EXIT_EXCEPTION_2: case SVM_EXIT_EXCEPTION_3:
818	case SVM_EXIT_EXCEPTION_4: case SVM_EXIT_EXCEPTION_5: case SVM_EXIT_EXCEPTION_6: case SVM_EXIT_EXCEPTION_7:
819	case SVM_EXIT_EXCEPTION_8: case SVM_EXIT_EXCEPTION_9: case SVM_EXIT_EXCEPTION_A: case SVM_EXIT_EXCEPTION_B:
820	case SVM_EXIT_EXCEPTION_C: case SVM_EXIT_EXCEPTION_D: case SVM_EXIT_EXCEPTION_E: case SVM_EXIT_EXCEPTION_F:
821	case SVM_EXIT_EXCEPTION_10: case SVM_EXIT_EXCEPTION_11: case SVM_EXIT_EXCEPTION_12: case SVM_EXIT_EXCEPTION_13:
822	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16: case SVM_EXIT_EXCEPTION_17:
823	case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19: case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B:
824	case SVM_EXIT_EXCEPTION_1C: case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
825	{
826	/* Pending trap. */
827	SVM_EVENT Event;
828	uint32_t vector = exitCode - SVM_EXIT_EXCEPTION_0;
829
830	Log2(("Hardware/software interrupt %d\n", vector));
831	switch (vector)
832	{
833	#ifdef DEBUG
834	case X86_XCPT_DB:
835	rc = DBGFR0Trap01Handler(pVM, CPUMCTX2CORE(pCtx), pVMCB->guest.u64DR6);
836	Assert(rc != VINF_EM_RAW_GUEST_TRAP);
837	break;
838	#endif
839
840	case X86_XCPT_NM:
841	{
842	uint32_t oldCR0;
843
844	Log(("#NM fault at %VGv\n", pCtx->eip));
845
846	/** @todo don't intercept #NM exceptions anymore when we've activated the guest FPU state. */
847	oldCR0 = ASMGetCR0();
848	/* If we sync the FPU/XMM state on-demand, then we can continue execution as if nothing has happened. */
849	rc = CPUMHandleLazyFPU(pVM);
850	if (rc == VINF_SUCCESS)
851	{
852	Assert(CPUMIsGuestFPUStateActive(pVM));
853
854	/* CPUMHandleLazyFPU could have changed CR0; restore it. */
855	ASMSetCR0(oldCR0);
856
857	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitShadowNM);
858
859	/* Continue execution. */
860	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
861	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
862
863	goto ResumeExecution;
864	}
865
866	Log(("Forward #NM fault to the guest\n"));
867	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestNM);
868
869	Event.au64[0] = 0;
870	Event.n.u3Type = SVM_EVENT_EXCEPTION;
871	Event.n.u1Valid = 1;
872	Event.n.u8Vector = X86_XCPT_NM;
873
874	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
875	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
876	goto ResumeExecution;
877	}
878
879	case X86_XCPT_PF: /* Page fault */
880	{
881	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
882	RTGCUINTPTR uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
883
884	Log2(("Page fault at %VGv cr2=%VGv error code %x\n", pCtx->eip, uFaultAddress, errCode));
885	/* Exit qualification contains the linear address of the page fault. */
886	TRPMAssertTrap(pVM, X86_XCPT_PF, TRPM_TRAP);
887	TRPMSetErrorCode(pVM, errCode);
888	TRPMSetFaultAddress(pVM, uFaultAddress);
889
890	/* Forward it to our trap handler first, in case our shadow pages are out of sync. */
891	rc = PGMTrap0eHandler(pVM, errCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
892	Log2(("PGMTrap0eHandler %VGv returned %Vrc\n", pCtx->eip, rc));
893	if (rc == VINF_SUCCESS)
894	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
895	Log2(("Shadow page fault at %VGv cr2=%VGv error code %x\n", pCtx->eip, uFaultAddress, errCode));
896	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitShadowPF);
897
898	TRPMResetTrap(pVM);
899
900	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
901	goto ResumeExecution;
902	}
903	else
904	if (rc == VINF_EM_RAW_GUEST_TRAP)
905	{ /* A genuine pagefault.
906	* Forward the trap to the guest by injecting the exception and resuming execution.
907	*/
908	Log2(("Forward page fault to the guest\n"));
909	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestPF);
910	/* The error code might have been changed. */
911	errCode = TRPMGetErrorCode(pVM);
912
913	TRPMResetTrap(pVM);
914
915	/* Now we must update CR2. */
916	pCtx->cr2 = uFaultAddress;
917
918	Event.au64[0] = 0;
919	Event.n.u3Type = SVM_EVENT_EXCEPTION;
920	Event.n.u1Valid = 1;
921	Event.n.u8Vector = X86_XCPT_PF;
922	Event.n.u1ErrorCodeValid = 1;
923	Event.n.u32ErrorCode = errCode;
924
925	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
926
927	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
928	goto ResumeExecution;
929	}
930	#ifdef VBOX_STRICT
931	if (rc != VINF_EM_RAW_EMULATE_INSTR)
932	Log(("PGMTrap0eHandler failed with %d\n", rc));
933	#endif
934	/* Need to go back to the recompiler to emulate the instruction. */
935	TRPMResetTrap(pVM);
936	break;
937	}
938
939	case X86_XCPT_MF: /* Floating point exception. */
940	{
941	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestMF);
942	if (!(pCtx->cr0 & X86_CR0_NE))
943	{
944	/* old style FPU error reporting needs some extra work. */
945	/** @todo don't fall back to the recompiler, but do it manually. */
946	rc = VINF_EM_RAW_EMULATE_INSTR;
947	break;
948	}
949	Log(("Trap %x at %VGv\n", vector, pCtx->eip));
950
951	Event.au64[0] = 0;
952	Event.n.u3Type = SVM_EVENT_EXCEPTION;
953	Event.n.u1Valid = 1;
954	Event.n.u8Vector = X86_XCPT_MF;
955
956	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
957
958	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
959	goto ResumeExecution;
960	}
961
962	#ifdef VBOX_STRICT
963	case X86_XCPT_GP: /* General protection failure exception.*/
964	case X86_XCPT_UD: /* Unknown opcode exception. */
965	case X86_XCPT_DE: /* Debug exception. */
966	case X86_XCPT_SS: /* Stack segment exception. */
967	case X86_XCPT_NP: /* Segment not present exception. */
968	{
969	Event.au64[0] = 0;
970	Event.n.u3Type = SVM_EVENT_EXCEPTION;
971	Event.n.u1Valid = 1;
972	Event.n.u8Vector = vector;
973
974	switch(vector)
975	{
976	case X86_XCPT_GP:
977	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestGP);
978	Event.n.u1ErrorCodeValid = 1;
979	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
980	break;
981	case X86_XCPT_DE:
982	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestDE);
983	break;
984	case X86_XCPT_UD:
985	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestUD);
986	break;
987	case X86_XCPT_SS:
988	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestSS);
989	Event.n.u1ErrorCodeValid = 1;
990	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
991	break;
992	case X86_XCPT_NP:
993	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitGuestNP);
994	Event.n.u1ErrorCodeValid = 1;
995	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
996	break;
997	}
998	Log(("Trap %x at %VGv\n", vector, pCtx->eip));
999	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1000
1001	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1002	goto ResumeExecution;
1003	}
1004	#endif
1005	default:
1006	AssertMsgFailed(("Unexpected vm-exit caused by exception %x\n", vector));
1007	rc = VERR_EM_INTERNAL_ERROR;
1008	break;
1009
1010	} /* switch (vector) */
1011	break;
1012	}
1013
1014	case SVM_EXIT_FERR_FREEZE:
1015	case SVM_EXIT_INTR:
1016	case SVM_EXIT_NMI:
1017	case SVM_EXIT_SMI:
1018	case SVM_EXIT_INIT:
1019	case SVM_EXIT_VINTR:
1020	/* External interrupt; leave to allow it to be dispatched again. */
1021	rc = VINF_EM_RAW_INTERRUPT;
1022	break;
1023
1024	case SVM_EXIT_INVD: /* Guest software attempted to execute INVD. */
1025	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitInvd);
1026	/* Skip instruction and continue directly. */
1027	pCtx->eip += 2; /** @note hardcoded opcode size! */
1028	/* Continue execution.*/
1029	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1030	goto ResumeExecution;
1031
1032	case SVM_EXIT_CPUID: /* Guest software attempted to execute CPUID. */
1033	{
1034	Log2(("SVM: Cpuid %x\n", pCtx->eax));
1035	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCpuid);
1036	rc = EMInterpretCpuId(pVM, CPUMCTX2CORE(pCtx));
1037	if (rc == VINF_SUCCESS)
1038	{
1039	/* Update EIP and continue execution. */
1040	pCtx->eip += 2; /** @note hardcoded opcode size! */
1041	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1042	goto ResumeExecution;
1043	}
1044	AssertMsgFailed(("EMU: cpuid failed with %Vrc\n", rc));
1045	rc = VINF_EM_RAW_EMULATE_INSTR;
1046	break;
1047	}
1048
1049	case SVM_EXIT_RDTSC: /* Guest software attempted to execute RDTSC. */
1050	{
1051	Log2(("SVM: Rdtsc\n"));
1052	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitRdtsc);
1053	rc = EMInterpretRdtsc(pVM, CPUMCTX2CORE(pCtx));
1054	if (rc == VINF_SUCCESS)
1055	{
1056	/* Update EIP and continue execution. */
1057	pCtx->eip += 2; /** @note hardcoded opcode size! */
1058	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1059	goto ResumeExecution;
1060	}
1061	AssertMsgFailed(("EMU: rdtsc failed with %Vrc\n", rc));
1062	rc = VINF_EM_RAW_EMULATE_INSTR;
1063	break;
1064	}
1065
1066	case SVM_EXIT_INVLPG: /* Guest software attempted to execute INVPG. */
1067	{
1068	Log2(("SVM: invlpg\n"));
1069	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitInvpg);
1070
1071	/* Truly a pita. Why can't SVM give the same information as VMX? */
1072	rc = SVMR0InterpretInvpg(pVM, CPUMCTX2CORE(pCtx), pVMCB->ctrl.TLBCtrl.n.u32ASID);
1073	if (rc == VINF_SUCCESS)
1074	goto ResumeExecution; /* eip already updated */
1075	break;
1076	}
1077
1078	case SVM_EXIT_WRITE_CR0: case SVM_EXIT_WRITE_CR1: case SVM_EXIT_WRITE_CR2: case SVM_EXIT_WRITE_CR3:
1079	case SVM_EXIT_WRITE_CR4: case SVM_EXIT_WRITE_CR5: case SVM_EXIT_WRITE_CR6: case SVM_EXIT_WRITE_CR7:
1080	case SVM_EXIT_WRITE_CR8: case SVM_EXIT_WRITE_CR9: case SVM_EXIT_WRITE_CR10: case SVM_EXIT_WRITE_CR11:
1081	case SVM_EXIT_WRITE_CR12: case SVM_EXIT_WRITE_CR13: case SVM_EXIT_WRITE_CR14: case SVM_EXIT_WRITE_CR15:
1082	{
1083	uint32_t cbSize;
1084
1085	Log2(("SVM: %VGv mov cr%d, \n", pCtx->eip, exitCode - SVM_EXIT_WRITE_CR0));
1086	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCRxWrite);
1087	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1088
1089	switch (exitCode - SVM_EXIT_WRITE_CR0)
1090	{
1091	case 0:
1092	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1093	break;
1094	case 2:
1095	break;
1096	case 3:
1097	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR3;
1098	break;
1099	case 4:
1100	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR4;
1101	break;
1102	default:
1103	AssertFailed();
1104	}
1105	/* Check if a sync operation is pending. */
1106	if ( rc == VINF_SUCCESS /* don't bother if we are going to ring 3 anyway */
1107	&& VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL))
1108	{
1109	rc = PGMSyncCR3(pVM, CPUMGetGuestCR0(pVM), CPUMGetGuestCR3(pVM), CPUMGetGuestCR4(pVM), VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
1110	AssertRC(rc);
1111
1112	/** @note Force a TLB flush. SVM requires us to do it manually. */
1113	fForceTLBFlush = true;
1114	}
1115	if (rc == VINF_SUCCESS)
1116	{
1117	/* EIP has been updated already. */
1118
1119	/* Only resume if successful. */
1120	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1121	goto ResumeExecution;
1122	}
1123	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1124	break;
1125	}
1126
1127	case SVM_EXIT_READ_CR0: case SVM_EXIT_READ_CR1: case SVM_EXIT_READ_CR2: case SVM_EXIT_READ_CR3:
1128	case SVM_EXIT_READ_CR4: case SVM_EXIT_READ_CR5: case SVM_EXIT_READ_CR6: case SVM_EXIT_READ_CR7:
1129	case SVM_EXIT_READ_CR8: case SVM_EXIT_READ_CR9: case SVM_EXIT_READ_CR10: case SVM_EXIT_READ_CR11:
1130	case SVM_EXIT_READ_CR12: case SVM_EXIT_READ_CR13: case SVM_EXIT_READ_CR14: case SVM_EXIT_READ_CR15:
1131	{
1132	uint32_t cbSize;
1133
1134	Log2(("SVM: %VGv mov x, cr%d\n", pCtx->eip, exitCode - SVM_EXIT_READ_CR0));
1135	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitCRxRead);
1136	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1137	if (rc == VINF_SUCCESS)
1138	{
1139	/* EIP has been updated already. */
1140
1141	/* Only resume if successful. */
1142	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1143	goto ResumeExecution;
1144	}
1145	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1146	break;
1147	}
1148
1149	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
1150	case SVM_EXIT_WRITE_DR4: case SVM_EXIT_WRITE_DR5: case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7:
1151	case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9: case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11:
1152	case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13: case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
1153	{
1154	uint32_t cbSize;
1155
1156	Log2(("SVM: %VGv mov dr%d, x\n", pCtx->eip, exitCode - SVM_EXIT_WRITE_DR0));
1157	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitDRxRead);
1158	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1159	if (rc == VINF_SUCCESS)
1160	{
1161	/* EIP has been updated already. */
1162
1163	/* Only resume if successful. */
1164	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1165	goto ResumeExecution;
1166	}
1167	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1168	break;
1169	}
1170
1171	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
1172	case SVM_EXIT_READ_DR4: case SVM_EXIT_READ_DR5: case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7:
1173	case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9: case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11:
1174	case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13: case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
1175	{
1176	uint32_t cbSize;
1177
1178	Log2(("SVM: %VGv mov dr%d, x\n", pCtx->eip, exitCode - SVM_EXIT_READ_DR0));
1179	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitDRxRead);
1180	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1181	if (rc == VINF_SUCCESS)
1182	{
1183	/* EIP has been updated already. */
1184
1185	/* Only resume if successful. */
1186	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1187	goto ResumeExecution;
1188	}
1189	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1190	break;
1191	}
1192
1193	/* Note: We'll get a #GP if the IO instruction isn't allowed (IOPL or TSS bitmap); no need to double check. */
1194	case SVM_EXIT_IOIO: /* I/O instruction. */
1195	{
1196	SVM_IOIO_EXIT IoExitInfo;
1197	uint32_t uIOSize, uAndVal;
1198
1199	IoExitInfo.au32[0] = pVMCB->ctrl.u64ExitInfo1;
1200
1201	/** @todo could use a lookup table here */
1202	if (IoExitInfo.n.u1OP8)
1203	{
1204	uIOSize = 1;
1205	uAndVal = 0xff;
1206	}
1207	else
1208	if (IoExitInfo.n.u1OP16)
1209	{
1210	uIOSize = 2;
1211	uAndVal = 0xffff;
1212	}
1213	else
1214	if (IoExitInfo.n.u1OP32)
1215	{
1216	uIOSize = 4;
1217	uAndVal = 0xffffffff;
1218	}
1219	else
1220	{
1221	AssertFailed(); /* should be fatal. */
1222	rc = VINF_EM_RAW_EMULATE_INSTR;
1223	break;
1224	}
1225
1226	if (IoExitInfo.n.u1STR)
1227	{
1228	/* ins/outs */
1229	uint32_t prefix = 0;
1230	if (IoExitInfo.n.u1REP)
1231	prefix \|= PREFIX_REP;
1232
1233	if (IoExitInfo.n.u1Type == 0)
1234	{
1235	Log2(("IOMInterpretOUTSEx %VGv %x size=%d\n", pCtx->eip, IoExitInfo.n.u16Port, uIOSize));
1236	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIOStringWrite);
1237	rc = IOMInterpretOUTSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, prefix, uIOSize);
1238	}
1239	else
1240	{
1241	Log2(("IOMInterpretINSEx %VGv %x size=%d\n", pCtx->eip, IoExitInfo.n.u16Port, uIOSize));
1242	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIOStringRead);
1243	rc = IOMInterpretINSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, prefix, uIOSize);
1244	}
1245	}
1246	else
1247	{
1248	/* normal in/out */
1249	Assert(!IoExitInfo.n.u1REP);
1250
1251	if (IoExitInfo.n.u1Type == 0)
1252	{
1253	Log2(("IOMIOPortWrite %VGv %x %x size=%d\n", pCtx->eip, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize));
1254	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIOWrite);
1255	rc = IOMIOPortWrite(pVM, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize);
1256	}
1257	else
1258	{
1259	uint32_t u32Val = 0;
1260
1261	STAM_COUNTER_INC(&pVM->hwaccm.s.StatExitIORead);
1262	rc = IOMIOPortRead(pVM, IoExitInfo.n.u16Port, &u32Val, uIOSize);
1263	if (IOM_SUCCESS(rc))
1264	{
1265	/* Write back to the EAX register. */
1266	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
1267	Log2(("IOMIOPortRead %VGv %x %x size=%d\n", pCtx->eip, IoExitInfo.n.u16Port, u32Val & uAndVal, uIOSize));
1268	}
1269	}
1270	}
1271	/*
1272	* Handled the I/O return codes.
1273	* (The unhandled cases end up with rc == VINF_EM_RAW_EMULATE_INSTR.)
1274	*/
1275	if (IOM_SUCCESS(rc))
1276	{
1277	/* Update EIP and continue execution. */
1278	pCtx->eip = pVMCB->ctrl.u64ExitInfo2; /* RIP/EIP of the next instruction is saved in EXITINFO2. */
1279	if (RT_LIKELY(rc == VINF_SUCCESS))
1280	{
1281	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1282	goto ResumeExecution;
1283	}
1284	Log2(("EM status from IO at %VGv %x size %d: %Vrc\n", pCtx->eip, IoExitInfo.n.u16Port, uIOSize, rc));
1285	break;
1286	}
1287
1288	#ifdef VBOX_STRICT
1289	if (rc == VINF_IOM_HC_IOPORT_READ)
1290	Assert(IoExitInfo.n.u1Type != 0);
1291	else if (rc == VINF_IOM_HC_IOPORT_WRITE)
1292	Assert(IoExitInfo.n.u1Type == 0);
1293	else
1294	AssertMsg(VBOX_FAILURE(rc) \|\| rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED, ("%Vrc\n", rc));
1295	#endif
1296	Log2(("Failed IO at %VGv %x size %d\n", pCtx->eip, IoExitInfo.n.u16Port, uIOSize));
1297	break;
1298	}
1299
1300	case SVM_EXIT_HLT:
1301	/** Check if external interrupts are pending; if so, don't switch back. */
1302	if (VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
1303	{
1304	pCtx->eip++; /* skip hlt */
1305	goto ResumeExecution;
1306	}
1307
1308	rc = VINF_EM_RAW_EMULATE_INSTR_HLT;
1309	break;
1310
1311	case SVM_EXIT_RDPMC:
1312	case SVM_EXIT_RSM:
1313	case SVM_EXIT_INVLPGA:
1314	case SVM_EXIT_VMRUN:
1315	case SVM_EXIT_VMMCALL:
1316	case SVM_EXIT_VMLOAD:
1317	case SVM_EXIT_VMSAVE:
1318	case SVM_EXIT_STGI:
1319	case SVM_EXIT_CLGI:
1320	case SVM_EXIT_SKINIT:
1321	case SVM_EXIT_RDTSCP:
1322	{
1323	/* Unsupported instructions. */
1324	SVM_EVENT Event;
1325
1326	Event.au64[0] = 0;
1327	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1328	Event.n.u1Valid = 1;
1329	Event.n.u8Vector = X86_XCPT_UD;
1330
1331	Log(("Forced #UD trap at %VGv\n", pCtx->eip));
1332	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1333
1334	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1335	goto ResumeExecution;
1336	}
1337
1338	/* Emulate RDMSR & WRMSR in ring 3. */
1339	case SVM_EXIT_MSR:
1340	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
1341	break;
1342
1343	case SVM_EXIT_NPF:
1344	AssertFailed(); /* unexpected */
1345	break;
1346
1347	case SVM_EXIT_SHUTDOWN:
1348	rc = VINF_EM_RESET; /* Triple fault equals a reset. */
1349	break;
1350
1351	case SVM_EXIT_PAUSE:
1352	case SVM_EXIT_IDTR_READ:
1353	case SVM_EXIT_GDTR_READ:
1354	case SVM_EXIT_LDTR_READ:
1355	case SVM_EXIT_TR_READ:
1356	case SVM_EXIT_IDTR_WRITE:
1357	case SVM_EXIT_GDTR_WRITE:
1358	case SVM_EXIT_LDTR_WRITE:
1359	case SVM_EXIT_TR_WRITE:
1360	case SVM_EXIT_CR0_SEL_WRITE:
1361	default:
1362	/* Unexpected exit codes. */
1363	rc = VERR_EM_INTERNAL_ERROR;
1364	AssertMsgFailed(("Unexpected exit code %x\n", exitCode)); /* Can't happen. */
1365	break;
1366	}
1367
1368	end:
1369	if (fGuestStateSynced)
1370	{
1371	/* Remaining guest CPU context: TR, IDTR, GDTR, LDTR. */
1372	SVM_READ_SELREG(LDTR, ldtr);
1373	SVM_READ_SELREG(TR, tr);
1374
1375	pCtx->gdtr.cbGdt = pVMCB->guest.GDTR.u32Limit;
1376	pCtx->gdtr.pGdt = pVMCB->guest.GDTR.u64Base;
1377
1378	pCtx->idtr.cbIdt = pVMCB->guest.IDTR.u32Limit;
1379	pCtx->idtr.pIdt = pVMCB->guest.IDTR.u64Base;
1380
1381	/*
1382	* System MSRs
1383	*/
1384	pCtx->SysEnter.cs = pVMCB->guest.u64SysEnterCS;
1385	pCtx->SysEnter.eip = pVMCB->guest.u64SysEnterEIP;
1386	pCtx->SysEnter.esp = pVMCB->guest.u64SysEnterESP;
1387	}
1388
1389	/* Signal changes for the recompiler. */
1390	CPUMSetChangedFlags(pVM, CPUM_CHANGED_SYSENTER_MSR \| CPUM_CHANGED_LDTR \| CPUM_CHANGED_GDTR \| CPUM_CHANGED_IDTR \| CPUM_CHANGED_TR \| CPUM_CHANGED_HIDDEN_SEL_REGS);
1391
1392	/* If we executed vmrun and an external irq was pending, then we don't have to do a full sync the next time. */
1393	if (exitCode == SVM_EXIT_INTR)
1394	{
1395	STAM_COUNTER_INC(&pVM->hwaccm.s.StatPendingHostIrq);
1396	/* On the next entry we'll only sync the host context. */
1397	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_HOST_CONTEXT;
1398	}
1399	else
1400	{
1401	/* On the next entry we'll sync everything. */
1402	/** @todo we can do better than this */
1403	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_ALL;
1404	}
1405
1406	/* translate into a less severe return code */
1407	if (rc == VERR_EM_INTERPRETER)
1408	rc = VINF_EM_RAW_EMULATE_INSTR;
1409
1410	STAM_PROFILE_ADV_STOP(&pVM->hwaccm.s.StatExit, x);
1411	return rc;
1412	}
1413
1414	/**
1415	* Enable SVM
1416	*
1417	* @returns VBox status code.
1418	* @param pVM The VM to operate on.
1419	*/
1420	HWACCMR0DECL(int) SVMR0Enable(PVM pVM)
1421	{
1422	uint64_t val;
1423
1424	Assert(pVM->hwaccm.s.svm.fSupported);
1425
1426	/* We must turn on SVM and setup the host state physical address, as those MSRs are per-cpu/core. */
1427
1428	/* Turn on SVM in the EFER MSR. */
1429	val = ASMRdMsr(MSR_K6_EFER);
1430	if (!(val & MSR_K6_EFER_SVME))
1431	ASMWrMsr(MSR_K6_EFER, val \| MSR_K6_EFER_SVME);
1432
1433	/* Write the physical page address where the CPU will store the host state while executing the VM. */
1434	ASMWrMsr(MSR_K8_VM_HSAVE_PA, pVM->hwaccm.s.svm.pHStatePhys);
1435
1436	/* Force a TLB flush on VM entry. */
1437	pVM->hwaccm.s.svm.fResumeVM = false;
1438
1439	/* Force to reload LDTR, so we'll execute VMLoad to load additional guest state. */
1440	pVM->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_LDTR;
1441
1442	return VINF_SUCCESS;
1443	}
1444
1445
1446	/**
1447	* Disable SVM
1448	*
1449	* @returns VBox status code.
1450	* @param pVM The VM to operate on.
1451	*/
1452	HWACCMR0DECL(int) SVMR0Disable(PVM pVM)
1453	{
1454	/** @todo hopefully this is not very expensive. */
1455
1456	/* Turn off SVM in the EFER MSR. */
1457	uint64_t val = ASMRdMsr(MSR_K6_EFER);
1458	ASMWrMsr(MSR_K6_EFER, val & ~MSR_K6_EFER_SVME);
1459
1460	/* Invalidate host state physical address. */
1461	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
1462
1463	Assert(pVM->hwaccm.s.svm.fSupported);
1464	return VINF_SUCCESS;
1465	}
1466
1467
1468	static int svmInterpretInvlPg(PVM pVM, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
1469	{
1470	OP_PARAMVAL param1;
1471	RTGCPTR addr;
1472
1473	int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->param1, &param1, PARAM_SOURCE);
1474	if(VBOX_FAILURE(rc))
1475	return VERR_EM_INTERPRETER;
1476
1477	switch(param1.type)
1478	{
1479	case PARMTYPE_IMMEDIATE:
1480	case PARMTYPE_ADDRESS:
1481	if(!(param1.flags & PARAM_VAL32))
1482	return VERR_EM_INTERPRETER;
1483	addr = (RTGCPTR)param1.val.val32;
1484	break;
1485
1486	default:
1487	return VERR_EM_INTERPRETER;
1488	}
1489
1490	/** @todo is addr always a flat linear address or ds based
1491	* (in absence of segment override prefixes)????
1492	*/
1493	rc = PGMInvalidatePage(pVM, addr);
1494	if (VBOX_SUCCESS(rc))
1495	{
1496	/* Manually invalidate the page for the VM's TLB. */
1497	SVMInvlpgA(addr, uASID);
1498	return VINF_SUCCESS;
1499	}
1500	/** @todo r=bird: we shouldn't ignore returns codes like this... I'm 99% sure the error is fatal. */
1501	return VERR_EM_INTERPRETER;
1502	}
1503
1504	/**
1505	* Interprets INVLPG
1506	*
1507	* @returns VBox status code.
1508	* @retval VINF_* Scheduling instructions.
1509	* @retval VERR_EM_INTERPRETER Something we can't cope with.
1510	* @retval VERR_* Fatal errors.
1511	*
1512	* @param pVM The VM handle.
1513	* @param pRegFrame The register frame.
1514	* @param ASID Tagged TLB id for the guest
1515	*
1516	* Updates the EIP if an instruction was executed successfully.
1517	*/
1518	static int SVMR0InterpretInvpg(PVM pVM, PCPUMCTXCORE pRegFrame, uint32_t uASID)
1519	{
1520	/*
1521	* Only allow 32-bit code.
1522	*/
1523	if (SELMIsSelector32Bit(pVM, pRegFrame->eflags, pRegFrame->cs, &pRegFrame->csHid))
1524	{
1525	RTGCPTR pbCode;
1526	int rc = SELMValidateAndConvertCSAddr(pVM, pRegFrame->eflags, pRegFrame->ss, pRegFrame->cs, &pRegFrame->csHid, (RTGCPTR)pRegFrame->eip, &pbCode);
1527	if (VBOX_SUCCESS(rc))
1528	{
1529	uint32_t cbOp;
1530	DISCPUSTATE Cpu;
1531
1532	Cpu.mode = CPUMODE_32BIT;
1533	rc = EMInterpretDisasOneEx(pVM, pbCode, pRegFrame, &Cpu, &cbOp);
1534	Assert(VBOX_FAILURE(rc) \|\| Cpu.pCurInstr->opcode == OP_INVLPG);
1535	if (VBOX_SUCCESS(rc) && Cpu.pCurInstr->opcode == OP_INVLPG)
1536	{
1537	Assert(cbOp == Cpu.opsize);
1538	rc = svmInterpretInvlPg(pVM, &Cpu, pRegFrame, uASID);
1539	if (VBOX_SUCCESS(rc))
1540	{
1541	pRegFrame->eip += cbOp; /* Move on to the next instruction. */
1542	}
1543	return rc;
1544	}
1545	}
1546	}
1547	return VERR_EM_INTERPRETER;
1548	}
1549

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source: vbox/trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp@ 5448

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