EMHM.cpp@ 56287

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1	/* $Id: EMHM.cpp 56287 2015-06-09 11:15:22Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor / Manager - hardware virtualization
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 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_EM
22	#include <VBox/vmm/em.h>
23	#include <VBox/vmm/vmm.h>
24	#include <VBox/vmm/csam.h>
25	#include <VBox/vmm/selm.h>
26	#include <VBox/vmm/trpm.h>
27	#include <VBox/vmm/iem.h>
28	#include <VBox/vmm/iom.h>
29	#include <VBox/vmm/dbgf.h>
30	#include <VBox/vmm/pgm.h>
31	#ifdef VBOX_WITH_REM
32	# include <VBox/vmm/rem.h>
33	#endif
34	#include <VBox/vmm/tm.h>
35	#include <VBox/vmm/mm.h>
36	#include <VBox/vmm/ssm.h>
37	#include <VBox/vmm/pdmapi.h>
38	#include <VBox/vmm/pdmcritsect.h>
39	#include <VBox/vmm/pdmqueue.h>
40	#include <VBox/vmm/hm.h>
41	#include "EMInternal.h"
42	#include <VBox/vmm/vm.h>
43	#include <VBox/vmm/cpumdis.h>
44	#include <VBox/dis.h>
45	#include <VBox/disopcode.h>
46	#include <VBox/vmm/dbgf.h>
47	#include "VMMTracing.h"
48
49	#include <iprt/asm.h>
50
51
52	/*******************************************************************************
53	* Defined Constants And Macros *
54	*******************************************************************************/
55	#if 0 /* Disabled till after 2.1.0 when we've time to test it. */
56	#define EM_NOTIFY_HM
57	#endif
58
59
60	/*******************************************************************************
61	* Internal Functions *
62	*******************************************************************************/
63	DECLINLINE(int) emR3HmExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC = VINF_SUCCESS);
64	static int emR3HmExecuteIOInstruction(PVM pVM, PVMCPU pVCpu);
65	static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
66
67	#define EMHANDLERC_WITH_HM
68	#define emR3ExecuteInstruction emR3HmExecuteInstruction
69	#define emR3ExecuteIOInstruction emR3HmExecuteIOInstruction
70	#include "EMHandleRCTmpl.h"
71
72
73	/**
74	* Executes instruction in HM mode if we can.
75	*
76	* This is somewhat comparable to REMR3EmulateInstruction.
77	*
78	* @returns VBox strict status code.
79	* @retval VINF_EM_DBG_STEPPED on success.
80	* @retval VERR_EM_CANNOT_EXEC_GUEST if we cannot execute guest instructions in
81	* HM right now.
82	*
83	* @param pVM Pointer to the cross context VM structure.
84	* @param pVCpu Pointer to the cross context CPU structure for
85	* the calling EMT.
86	* @param fFlags Combinations of EM_ONE_INS_FLAGS_XXX.
87	* @thread EMT.
88	*/
89	VMMR3_INT_DECL(VBOXSTRICTRC) EMR3HmSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags)
90	{
91	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
92	Assert(!(fFlags & ~EM_ONE_INS_FLAGS_MASK));
93
94	if (!HMR3CanExecuteGuest(pVM, pCtx))
95	return VINF_EM_RESCHEDULE;
96
97	uint64_t const uOldRip = pCtx->rip;
98	for (;;)
99	{
100	/*
101	* Service necessary FFs before going into HM.
102	*/
103	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
104	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
105	{
106	VBOXSTRICTRC rcStrict = emR3HmForcedActions(pVM, pVCpu, pCtx);
107	if (rcStrict != VINF_SUCCESS)
108	{
109	Log(("EMR3HmSingleInstruction: FFs before -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
110	return rcStrict;
111	}
112	}
113
114	/*
115	* Go execute it.
116	*/
117	bool fOld = HMSetSingleInstruction(pVCpu, true);
118	VBOXSTRICTRC rcStrict = VMMR3HmRunGC(pVM, pVCpu);
119	HMSetSingleInstruction(pVCpu, fOld);
120	LogFlow(("EMR3HmSingleInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
121
122	/*
123	* Handle high priority FFs and informational status codes. We don't do
124	* normal FF processing the caller or the next call can deal with them.
125	*/
126	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
127	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
128	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
129	{
130	rcStrict = emR3HighPriorityPostForcedActions(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
131	LogFlow(("EMR3HmSingleInstruction: FFs after -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
132	}
133
134	if (rcStrict != VINF_SUCCESS && (rcStrict < VINF_EM_FIRST \|\| rcStrict > VINF_EM_LAST))
135	{
136	rcStrict = emR3HmHandleRC(pVM, pVCpu, pCtx, VBOXSTRICTRC_TODO(rcStrict));
137	Log(("EMR3HmSingleInstruction: emR3HmHandleRC -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
138	}
139
140	/*
141	* Done?
142	*/
143	if ( (rcStrict != VINF_SUCCESS && rcStrict != VINF_EM_DBG_STEPPED)
144	\|\| !(fFlags & EM_ONE_INS_FLAGS_RIP_CHANGE)
145	\|\| pCtx->rip != uOldRip)
146	{
147	if (rcStrict == VINF_SUCCESS && pCtx->rip != uOldRip)
148	rcStrict = VINF_EM_DBG_STEPPED;
149	Log(("EMR3HmSingleInstruction: returns %Rrc (rip %llx -> %llx)\n", VBOXSTRICTRC_VAL(rcStrict), uOldRip, pCtx->rip));
150	return rcStrict;
151	}
152	}
153	}
154
155
156	/**
157	* Executes one (or perhaps a few more) instruction(s).
158	*
159	* @returns VBox status code suitable for EM.
160	*
161	* @param pVM Pointer to the VM.
162	* @param pVCpu Pointer to the VMCPU.
163	* @param rcRC Return code from RC.
164	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
165	* instruction and prefix the log output with this text.
166	*/
167	#ifdef LOG_ENABLED
168	static int emR3HmExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC, const char *pszPrefix)
169	#else
170	static int emR3HmExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC)
171	#endif
172	{
173	#ifdef LOG_ENABLED
174	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
175	#endif
176	int rc;
177	NOREF(rcRC);
178
179	#ifdef LOG_ENABLED
180	/*
181	* Log it.
182	*/
183	Log(("EMINS: %04x:%RGv RSP=%RGv\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip, (RTGCPTR)pCtx->rsp));
184	if (pszPrefix)
185	{
186	DBGFR3_INFO_LOG(pVM, "cpumguest", pszPrefix);
187	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
188	}
189	#endif
190
191	/*
192	* Use IEM and fallback on REM if the functionality is missing.
193	* Once IEM gets mature enough, nothing should ever fall back.
194	*/
195	STAM_PROFILE_START(&pVCpu->em.s.StatIEMEmu, a);
196	rc = VBOXSTRICTRC_TODO(IEMExecOne(pVCpu));
197	STAM_PROFILE_STOP(&pVCpu->em.s.StatIEMEmu, a);
198
199	if ( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
200	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED)
201	{
202	#ifdef VBOX_WITH_REM
203	STAM_PROFILE_START(&pVCpu->em.s.StatREMEmu, b);
204	EMRemLock(pVM);
205	/* Flush the recompiler TLB if the VCPU has changed. */
206	if (pVM->em.s.idLastRemCpu != pVCpu->idCpu)
207	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_ALL);
208	pVM->em.s.idLastRemCpu = pVCpu->idCpu;
209
210	rc = REMR3EmulateInstruction(pVM, pVCpu);
211	EMRemUnlock(pVM);
212	STAM_PROFILE_STOP(&pVCpu->em.s.StatREMEmu, b);
213	#else /* !VBOX_WITH_REM */
214	NOREF(pVM);
215	#endif /* !VBOX_WITH_REM */
216	}
217
218	#ifdef EM_NOTIFY_HM
219	if (pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM)
220	HMR3NotifyEmulated(pVCpu);
221	#endif
222	return rc;
223	}
224
225
226	/**
227	* Executes one (or perhaps a few more) instruction(s).
228	* This is just a wrapper for discarding pszPrefix in non-logging builds.
229	*
230	* @returns VBox status code suitable for EM.
231	* @param pVM Pointer to the VM.
232	* @param pVCpu Pointer to the VMCPU.
233	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
234	* instruction and prefix the log output with this text.
235	* @param rcGC GC return code
236	*/
237	DECLINLINE(int) emR3HmExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC)
238	{
239	#ifdef LOG_ENABLED
240	return emR3HmExecuteInstructionWorker(pVM, pVCpu, rcGC, pszPrefix);
241	#else
242	return emR3HmExecuteInstructionWorker(pVM, pVCpu, rcGC);
243	#endif
244	}
245
246	/**
247	* Executes one (or perhaps a few more) IO instruction(s).
248	*
249	* @returns VBox status code suitable for EM.
250	* @param pVM Pointer to the VM.
251	* @param pVCpu Pointer to the VMCPU.
252	*/
253	static int emR3HmExecuteIOInstruction(PVM pVM, PVMCPU pVCpu)
254	{
255	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
256
257	STAM_PROFILE_START(&pVCpu->em.s.StatIOEmu, a);
258
259	/*
260	* Try to restart the io instruction that was refused in ring-0.
261	*/
262	VBOXSTRICTRC rcStrict = HMR3RestartPendingIOInstr(pVM, pVCpu, pCtx);
263	if (IOM_SUCCESS(rcStrict))
264	{
265	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoRestarted);
266	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
267	return VBOXSTRICTRC_TODO(rcStrict); /* rip already updated. */
268	}
269	AssertMsgReturn(rcStrict == VERR_NOT_FOUND, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
270	RT_SUCCESS_NP(rcStrict) ? VERR_IPE_UNEXPECTED_INFO_STATUS : VBOXSTRICTRC_TODO(rcStrict));
271
272	/*
273	* Hand it over to the interpreter.
274	*/
275	rcStrict = IEMExecOne(pVCpu);
276	LogFlow(("emR3HmExecuteIOInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
277	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoIem);
278	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
279	return VBOXSTRICTRC_TODO(rcStrict);
280	}
281
282
283	/**
284	* Process raw-mode specific forced actions.
285	*
286	* This function is called when any FFs in the VM_FF_HIGH_PRIORITY_PRE_RAW_MASK is pending.
287	*
288	* @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
289	* EM statuses.
290	* @param pVM Pointer to the VM.
291	* @param pVCpu Pointer to the VMCPU.
292	* @param pCtx Pointer to the guest CPU context.
293	*/
294	static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
295	{
296	/*
297	* Sync page directory.
298	*/
299	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
300	{
301	Assert(pVCpu->em.s.enmState != EMSTATE_WAIT_SIPI);
302	int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
303	if (RT_FAILURE(rc))
304	return rc;
305
306	#ifdef VBOX_WITH_RAW_MODE
307	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
308	#endif
309
310	/* Prefetch pages for EIP and ESP. */
311	/** @todo This is rather expensive. Should investigate if it really helps at all. */
312	rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_CS, CPUMCTX2CORE(pCtx), pCtx->rip));
313	if (rc == VINF_SUCCESS)
314	rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVM, DISSELREG_SS, CPUMCTX2CORE(pCtx), pCtx->rsp));
315	if (rc != VINF_SUCCESS)
316	{
317	if (rc != VINF_PGM_SYNC_CR3)
318	{
319	AssertLogRelMsgReturn(RT_FAILURE(rc), ("%Rrc\n", rc), VERR_IPE_UNEXPECTED_INFO_STATUS);
320	return rc;
321	}
322	rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
323	if (RT_FAILURE(rc))
324	return rc;
325	}
326	/** @todo maybe prefetch the supervisor stack page as well */
327	#ifdef VBOX_WITH_RAW_MODE
328	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
329	#endif
330	}
331
332	/*
333	* Allocate handy pages (just in case the above actions have consumed some pages).
334	*/
335	if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
336	{
337	int rc = PGMR3PhysAllocateHandyPages(pVM);
338	if (RT_FAILURE(rc))
339	return rc;
340	}
341
342	/*
343	* Check whether we're out of memory now.
344	*
345	* This may stem from some of the above actions or operations that has been executed
346	* since we ran FFs. The allocate handy pages must for instance always be followed by
347	* this check.
348	*/
349	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY))
350	return VINF_EM_NO_MEMORY;
351
352	return VINF_SUCCESS;
353	}
354
355
356	/**
357	* Executes hardware accelerated raw code. (Intel VT-x & AMD-V)
358	*
359	* This function contains the raw-mode version of the inner
360	* execution loop (the outer loop being in EMR3ExecuteVM()).
361	*
362	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE, VINF_EM_RESCHEDULE_RAW,
363	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
364	*
365	* @param pVM Pointer to the VM.
366	* @param pVCpu Pointer to the VMCPU.
367	* @param pfFFDone Where to store an indicator telling whether or not
368	* FFs were done before returning.
369	*/
370	int emR3HmExecute(PVM pVM, PVMCPU pVCpu, bool *pfFFDone)
371	{
372	int rc = VERR_IPE_UNINITIALIZED_STATUS;
373	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
374
375	LogFlow(("emR3HmExecute%d: (cs:eip=%04x:%RGv)\n", pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
376	*pfFFDone = false;
377
378	STAM_COUNTER_INC(&pVCpu->em.s.StatHmExecuteEntry);
379
380	#ifdef EM_NOTIFY_HM
381	HMR3NotifyScheduled(pVCpu);
382	#endif
383
384	/*
385	* Spin till we get a forced action which returns anything but VINF_SUCCESS.
386	*/
387	for (;;)
388	{
389	STAM_PROFILE_ADV_START(&pVCpu->em.s.StatHmEntry, a);
390
391	/* Check if a forced reschedule is pending. */
392	if (HMR3IsRescheduleRequired(pVM, pCtx))
393	{
394	rc = VINF_EM_RESCHEDULE;
395	break;
396	}
397
398	/*
399	* Process high priority pre-execution raw-mode FFs.
400	*/
401	#ifdef VBOX_WITH_RAW_MODE
402	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_TSS \| VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
403	#endif
404	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
405	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
406	{
407	rc = emR3HmForcedActions(pVM, pVCpu, pCtx);
408	if (rc != VINF_SUCCESS)
409	break;
410	}
411
412	#ifdef LOG_ENABLED
413	/*
414	* Log important stuff before entering GC.
415	*/
416	if (TRPMHasTrap(pVCpu))
417	Log(("CPU%d: Pending hardware interrupt=0x%x cs:rip=%04X:%RGv\n", pVCpu->idCpu, TRPMGetTrapNo(pVCpu), pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
418
419	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
420
421	if (pVM->cCpus == 1)
422	{
423	if (pCtx->eflags.Bits.u1VM)
424	Log(("HWV86: %08X IF=%d\n", pCtx->eip, pCtx->eflags.Bits.u1IF));
425	else if (CPUMIsGuestIn64BitCodeEx(pCtx))
426	Log(("HWR%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->cs.Sel, (RTGCPTR)pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
427	else
428	Log(("HWR%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pCtx->cs.Sel, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
429	}
430	else
431	{
432	if (pCtx->eflags.Bits.u1VM)
433	Log(("HWV86-CPU%d: %08X IF=%d\n", pVCpu->idCpu, pCtx->eip, pCtx->eflags.Bits.u1IF));
434	else if (CPUMIsGuestIn64BitCodeEx(pCtx))
435	Log(("HWR%d-CPU%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip, pCtx->rsp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
436	else
437	Log(("HWR%d-CPU%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pCtx->cs.Sel, pCtx->eip, pCtx->esp, pCtx->eflags.Bits.u1IF, pCtx->eflags.Bits.u2IOPL, (uint32_t)pCtx->cr0, (uint32_t)pCtx->cr4, (uint32_t)pCtx->msrEFER));
438	}
439	#endif /* LOG_ENABLED */
440
441	/*
442	* Execute the code.
443	*/
444	STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatHmEntry, a);
445
446	if (RT_LIKELY(emR3IsExecutionAllowed(pVM, pVCpu)))
447	{
448	STAM_PROFILE_START(&pVCpu->em.s.StatHmExec, x);
449	rc = VMMR3HmRunGC(pVM, pVCpu);
450	STAM_PROFILE_STOP(&pVCpu->em.s.StatHmExec, x);
451	}
452	else
453	{
454	/* Give up this time slice; virtual time continues */
455	STAM_REL_PROFILE_ADV_START(&pVCpu->em.s.StatCapped, u);
456	RTThreadSleep(5);
457	STAM_REL_PROFILE_ADV_STOP(&pVCpu->em.s.StatCapped, u);
458	rc = VINF_SUCCESS;
459	}
460
461
462	/*
463	* Deal with high priority post execution FFs before doing anything else.
464	*/
465	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
466	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
467	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
468	rc = emR3HighPriorityPostForcedActions(pVM, pVCpu, rc);
469
470	/*
471	* Process the returned status code.
472	*/
473	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
474	break;
475
476	rc = emR3HmHandleRC(pVM, pVCpu, pCtx, rc);
477	if (rc != VINF_SUCCESS)
478	break;
479
480	/*
481	* Check and execute forced actions.
482	*/
483	#ifdef VBOX_HIGH_RES_TIMERS_HACK
484	TMTimerPollVoid(pVM, pVCpu);
485	#endif
486	if ( VM_FF_IS_PENDING(pVM, VM_FF_ALL_MASK)
487	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_ALL_MASK))
488	{
489	rc = emR3ForcedActions(pVM, pVCpu, rc);
490	VBOXVMM_EM_FF_ALL_RET(pVCpu, rc);
491	if ( rc != VINF_SUCCESS
492	&& rc != VINF_EM_RESCHEDULE_HM)
493	{
494	*pfFFDone = true;
495	break;
496	}
497	}
498	}
499
500	/*
501	* Return to outer loop.
502	*/
503	#if defined(LOG_ENABLED) && defined(DEBUG)
504	RTLogFlush(NULL);
505	#endif
506	return rc;
507	}
508

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source: vbox/trunk/src/VBox/VMM/VMMR3/EMHM.cpp@ 56287

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