EMR3Nem.cpp@ 71289

Last change on this file since 71289 was 71031, checked in by vboxsync, 7 years ago
NEM: More code. bugref:9044
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1	/* $Id: EMR3Nem.cpp 71031 2018-02-15 16:47:13Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor / Manager - NEM interface.
4	*/
5
6	/*
7	* Copyright (C) 2006-2018 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	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_EM
23	#include <VBox/vmm/em.h>
24	#include <VBox/vmm/vmm.h>
25	#include <VBox/vmm/csam.h>
26	#include <VBox/vmm/selm.h>
27	#include <VBox/vmm/trpm.h>
28	#include <VBox/vmm/iem.h>
29	#include <VBox/vmm/iom.h>
30	#include <VBox/vmm/nem.h>
31	#include <VBox/vmm/dbgf.h>
32	#include <VBox/vmm/pgm.h>
33	#ifdef VBOX_WITH_REM
34	# include <VBox/vmm/rem.h>
35	#endif
36	#include <VBox/vmm/tm.h>
37	#include <VBox/vmm/mm.h>
38	#include <VBox/vmm/ssm.h>
39	#include <VBox/vmm/pdmapi.h>
40	#include <VBox/vmm/pdmcritsect.h>
41	#include <VBox/vmm/pdmqueue.h>
42	#include "EMInternal.h"
43	#include <VBox/vmm/vm.h>
44	#include <VBox/vmm/gim.h>
45	#include <VBox/vmm/cpumdis.h>
46	#include <VBox/dis.h>
47	#include <VBox/disopcode.h>
48	#include <VBox/vmm/dbgf.h>
49	#include "VMMTracing.h"
50
51	#include <iprt/asm.h>
52
53
54	/*********************************************************************************************************************************
55	* Defined Constants And Macros *
56	*********************************************************************************************************************************/
57	#if 0 /* Disabled till after 2.1.0 when we've time to test it. */
58	#define EM_NOTIFY_HM
59	#endif
60
61
62	/*********************************************************************************************************************************
63	* Internal Functions *
64	*********************************************************************************************************************************/
65	DECLINLINE(int) emR3NemExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC = VINF_SUCCESS);
66	static int emR3NemExecuteIOInstruction(PVM pVM, PVMCPU pVCpu);
67	static int emR3NemForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
68
69	#define EMHANDLERC_WITH_NEM
70	#define emR3ExecuteInstruction emR3NemExecuteInstruction
71	#define emR3ExecuteIOInstruction emR3NemExecuteIOInstruction
72	#include "EMHandleRCTmpl.h"
73
74
75	/**
76	* Executes instruction in HM mode if we can.
77	*
78	* This is somewhat comparable to REMR3EmulateInstruction.
79	*
80	* @returns VBox strict status code.
81	* @retval VINF_EM_DBG_STEPPED on success.
82	* @retval VERR_EM_CANNOT_EXEC_GUEST if we cannot execute guest instructions in
83	* HM right now.
84	*
85	* @param pVM The cross context VM structure.
86	* @param pVCpu The cross context virtual CPU structure for the calling EMT.
87	* @param fFlags Combinations of EM_ONE_INS_FLAGS_XXX.
88	* @thread EMT.
89	*/
90	VBOXSTRICTRC emR3NemSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags)
91	{
92	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
93	Assert(!(fFlags & ~EM_ONE_INS_FLAGS_MASK));
94
95	if (!NEMR3CanExecuteGuest(pVM, pVCpu, pCtx))
96	return VINF_EM_RESCHEDULE;
97
98	uint64_t const uOldRip = pCtx->rip;
99	for (;;)
100	{
101	/*
102	* Service necessary FFs before going into HM.
103	*/
104	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
105	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
106	{
107	VBOXSTRICTRC rcStrict = emR3NemForcedActions(pVM, pVCpu, pCtx);
108	if (rcStrict != VINF_SUCCESS)
109	{
110	Log(("emR3NemSingleInstruction: FFs before -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
111	return rcStrict;
112	}
113	}
114
115	/*
116	* Go execute it.
117	*/
118	bool fOld = NEMR3SetSingleInstruction(pVM, pVCpu, true);
119	VBOXSTRICTRC rcStrict = NEMR3RunGC(pVM, pVCpu);
120	NEMR3SetSingleInstruction(pVM, pVCpu, fOld);
121	LogFlow(("emR3NemSingleInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
122
123	/*
124	* Handle high priority FFs and informational status codes. We don't do
125	* normal FF processing the caller or the next call can deal with them.
126	*/
127	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
128	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
129	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
130	{
131	rcStrict = emR3HighPriorityPostForcedActions(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
132	LogFlow(("emR3NemSingleInstruction: FFs after -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
133	}
134
135	if (rcStrict != VINF_SUCCESS && (rcStrict < VINF_EM_FIRST \|\| rcStrict > VINF_EM_LAST))
136	{
137	rcStrict = emR3NemHandleRC(pVM, pVCpu, pCtx, VBOXSTRICTRC_TODO(rcStrict));
138	Log(("emR3NemSingleInstruction: emR3NemHandleRC -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
139	}
140
141	/*
142	* Done?
143	*/
144	if ( (rcStrict != VINF_SUCCESS && rcStrict != VINF_EM_DBG_STEPPED)
145	\|\| !(fFlags & EM_ONE_INS_FLAGS_RIP_CHANGE)
146	\|\| pCtx->rip != uOldRip)
147	{
148	if (rcStrict == VINF_SUCCESS && pCtx->rip != uOldRip)
149	rcStrict = VINF_EM_DBG_STEPPED;
150	Log(("emR3NemSingleInstruction: returns %Rrc (rip %llx -> %llx)\n", VBOXSTRICTRC_VAL(rcStrict), uOldRip, pCtx->rip));
151	return rcStrict;
152	}
153	}
154	}
155
156
157	/**
158	* Executes one (or perhaps a few more) instruction(s).
159	*
160	* @returns VBox status code suitable for EM.
161	*
162	* @param pVM The cross context VM structure.
163	* @param pVCpu The cross context virtual CPU structure.
164	* @param rcRC Return code from RC.
165	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
166	* instruction and prefix the log output with this text.
167	*/
168	#if defined(LOG_ENABLED) \|\| defined(DOXYGEN_RUNNING)
169	static int emR3NemExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC, const char *pszPrefix)
170	#else
171	static int emR3NemExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC)
172	#endif
173	{
174	#ifdef LOG_ENABLED
175	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
176	#endif
177	int rc;
178	NOREF(rcRC);
179
180	#ifdef LOG_ENABLED
181	/*
182	* Log it.
183	*/
184	Log(("EMINS: %04x:%RGv RSP=%RGv\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip, (RTGCPTR)pCtx->rsp));
185	if (pszPrefix)
186	{
187	DBGFR3_INFO_LOG(pVM, pVCpu, "cpumguest", pszPrefix);
188	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
189	}
190	#endif
191
192	/*
193	* Use IEM and fallback on REM if the functionality is missing.
194	* Once IEM gets mature enough, nothing should ever fall back.
195	*/
196	STAM_PROFILE_START(&pVCpu->em.s.StatIEMEmu, a);
197	rc = VBOXSTRICTRC_TODO(IEMExecOne(pVCpu));
198	STAM_PROFILE_STOP(&pVCpu->em.s.StatIEMEmu, a);
199
200	if ( rc == VERR_IEM_ASPECT_NOT_IMPLEMENTED
201	\|\| rc == VERR_IEM_INSTR_NOT_IMPLEMENTED)
202	{
203	#ifdef VBOX_WITH_REM
204	STAM_PROFILE_START(&pVCpu->em.s.StatREMEmu, b);
205	EMRemLock(pVM);
206	/* Flush the recompiler TLB if the VCPU has changed. */
207	if (pVM->em.s.idLastRemCpu != pVCpu->idCpu)
208	CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_ALL);
209	pVM->em.s.idLastRemCpu = pVCpu->idCpu;
210
211	rc = REMR3EmulateInstruction(pVM, pVCpu);
212	EMRemUnlock(pVM);
213	STAM_PROFILE_STOP(&pVCpu->em.s.StatREMEmu, b);
214	#else /* !VBOX_WITH_REM */
215	NOREF(pVM);
216	#endif /* !VBOX_WITH_REM */
217	}
218
219	#ifdef EM_NOTIFY_HM
220	if (pVCpu->em.s.enmState == EMSTATE_DEBUG_GUEST_HM)
221	HMR3NotifyEmulated(pVCpu);
222	#endif
223	return rc;
224	}
225
226
227	/**
228	* Executes one (or perhaps a few more) instruction(s).
229	* This is just a wrapper for discarding pszPrefix in non-logging builds.
230	*
231	* @returns VBox status code suitable for EM.
232	* @param pVM The cross context VM structure.
233	* @param pVCpu The cross context virtual CPU structure.
234	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
235	* instruction and prefix the log output with this text.
236	* @param rcGC GC return code
237	*/
238	DECLINLINE(int) emR3NemExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC)
239	{
240	#ifdef LOG_ENABLED
241	return emR3NemExecuteInstructionWorker(pVM, pVCpu, rcGC, pszPrefix);
242	#else
243	RT_NOREF_PV(pszPrefix);
244	return emR3NemExecuteInstructionWorker(pVM, pVCpu, rcGC);
245	#endif
246	}
247
248	/**
249	* Executes one (or perhaps a few more) IO instruction(s).
250	*
251	* @returns VBox status code suitable for EM.
252	* @param pVM The cross context VM structure.
253	* @param pVCpu The cross context virtual CPU structure.
254	*/
255	static int emR3NemExecuteIOInstruction(PVM pVM, PVMCPU pVCpu)
256	{
257	RT_NOREF_PV(pVM);
258	STAM_PROFILE_START(&pVCpu->em.s.StatIOEmu, a);
259
260	#if 0
261	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
262
263	/*
264	* Try to restart the io instruction that was refused in ring-0.
265	*/
266	VBOXSTRICTRC rcStrict = HMR3RestartPendingIOInstr(pVM, pVCpu, pCtx);
267	if (IOM_SUCCESS(rcStrict))
268	{
269	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoRestarted);
270	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
271	return VBOXSTRICTRC_TODO(rcStrict); /* rip already updated. */
272	}
273	AssertMsgReturn(rcStrict == VERR_NOT_FOUND, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
274	RT_SUCCESS_NP(rcStrict) ? VERR_IPE_UNEXPECTED_INFO_STATUS : VBOXSTRICTRC_TODO(rcStrict));
275	#endif
276
277	/*
278	* Hand it over to the interpreter.
279	*/
280	VBOXSTRICTRC rcStrict = IEMExecOne(pVCpu);
281	LogFlow(("emR3NemExecuteIOInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
282	STAM_COUNTER_INC(&pVCpu->em.s.CTX_SUFF(pStats)->StatIoIem);
283
284	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
285	return VBOXSTRICTRC_TODO(rcStrict);
286	}
287
288
289	/**
290	* Process NEM specific forced actions.
291	*
292	* This function is called when any FFs in VM_FF_HIGH_PRIORITY_PRE_RAW_MASK
293	* or/and VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK are pending.
294	*
295	* @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
296	* EM statuses.
297	* @param pVM The cross context VM structure.
298	* @param pVCpu The cross context virtual CPU structure.
299	* @param pCtx Pointer to the guest CPU context.
300	*/
301	static int emR3NemForcedActions(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
302	{
303	#ifdef VBOX_WITH_RAW_MODE
304	Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_SELM_SYNC_TSS \| VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT));
305	#endif
306
307	/*
308	* Sync page directory should not happen in NEM mode.
309	*/
310	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
311	{
312	Log(("NEM: TODO: Make VMCPU_FF_PGM_SYNC_CR3 / VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL quiet! (%#x)\n", pVCpu->fLocalForcedActions));
313	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
314	}
315
316	/*
317	* Allocate handy pages (just in case the above actions have consumed some pages).
318	*/
319	if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
320	{
321	int rc = PGMR3PhysAllocateHandyPages(pVM);
322	if (RT_FAILURE(rc))
323	return rc;
324	}
325
326	/*
327	* Check whether we're out of memory now.
328	*
329	* This may stem from some of the above actions or operations that has been executed
330	* since we ran FFs. The allocate handy pages must for instance always be followed by
331	* this check.
332	*/
333	if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY))
334	return VINF_EM_NO_MEMORY;
335
336	RT_NOREF_PV(pCtx);
337	return VINF_SUCCESS;
338	}
339
340
341	/**
342	* Executes hardware accelerated raw code. (Intel VT-x & AMD-V)
343	*
344	* This function contains the raw-mode version of the inner
345	* execution loop (the outer loop being in EMR3ExecuteVM()).
346	*
347	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE, VINF_EM_RESCHEDULE_RAW,
348	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
349	*
350	* @param pVM The cross context VM structure.
351	* @param pVCpu The cross context virtual CPU structure.
352	* @param pfFFDone Where to store an indicator telling whether or not
353	* FFs were done before returning.
354	*/
355	VBOXSTRICTRC emR3NemExecute(PVM pVM, PVMCPU pVCpu, bool *pfFFDone)
356	{
357	VBOXSTRICTRC rcStrict = VERR_IPE_UNINITIALIZED_STATUS;
358	PCPUMCTX pCtx = pVCpu->em.s.pCtx;
359
360	LogFlow(("emR3NemExecute%d: (cs:eip=%04x:%RGv)\n", pVCpu->idCpu, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
361	*pfFFDone = false;
362
363	STAM_COUNTER_INC(&pVCpu->em.s.StatNEMExecuteCalled);
364
365	/*
366	* Spin till we get a forced action which returns anything but VINF_SUCCESS.
367	*/
368	for (;;)
369	{
370	STAM_PROFILE_ADV_START(&pVCpu->em.s.StatNEMEntry, a);
371
372	#if 0
373	/* Check if a forced reschedule is pending. */
374	if (NEMR3IsRescheduleRequired(pVM, pCtx))
375	{
376	rcStrict = VINF_EM_RESCHEDULE;
377	break;
378	}
379	#endif
380
381	/*
382	* Process high priority pre-execution raw-mode FFs.
383	*/
384	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
385	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
386	{
387	rcStrict = emR3NemForcedActions(pVM, pVCpu, pCtx);
388	if (rcStrict != VINF_SUCCESS)
389	break;
390	}
391
392	#ifdef LOG_ENABLED
393	/*
394	* Log important stuff before entering GC.
395	*/
396	if (TRPMHasTrap(pVCpu))
397	Log(("CPU%d: Pending hardware interrupt=0x%x cs:rip=%04X:%RGv\n", pVCpu->idCpu, TRPMGetTrapNo(pVCpu), pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
398
399	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
400	if (pVM->cCpus == 1)
401	{
402	if (pCtx->eflags.Bits.u1VM)
403	Log(("NEMV86: %08X IF=%d\n", pCtx->eip, pCtx->eflags.Bits.u1IF));
404	else if (CPUMIsGuestIn64BitCodeEx(pCtx))
405	Log(("NEMR%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));
406	else
407	Log(("NEMR%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));
408	}
409	else
410	{
411	if (pCtx->eflags.Bits.u1VM)
412	Log(("NEMV86-CPU%d: %08X IF=%d\n", pVCpu->idCpu, pCtx->eip, pCtx->eflags.Bits.u1IF));
413	else if (CPUMIsGuestIn64BitCodeEx(pCtx))
414	Log(("NEMR%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));
415	else
416	Log(("NEMR%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));
417	}
418	#endif /* LOG_ENABLED */
419
420	/*
421	* Execute the code.
422	*/
423	STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatNEMEntry, a);
424
425	if (RT_LIKELY(emR3IsExecutionAllowed(pVM, pVCpu)))
426	{
427	STAM_PROFILE_START(&pVCpu->em.s.StatNEMExec, x);
428	rcStrict = NEMR3RunGC(pVM, pVCpu);
429	STAM_PROFILE_STOP(&pVCpu->em.s.StatNEMExec, x);
430	}
431	else
432	{
433	/* Give up this time slice; virtual time continues */
434	STAM_REL_PROFILE_ADV_START(&pVCpu->em.s.StatCapped, u);
435	RTThreadSleep(5);
436	STAM_REL_PROFILE_ADV_STOP(&pVCpu->em.s.StatCapped, u);
437	rcStrict = VINF_SUCCESS;
438	}
439
440
441	/*
442	* Deal with high priority post execution FFs before doing anything else.
443	*/
444	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
445	if ( VM_FF_IS_PENDING(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
446	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
447	rcStrict = emR3HighPriorityPostForcedActions(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
448
449	/*
450	* Process the returned status code.
451	*/
452	if (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST)
453	break;
454
455	rcStrict = emR3NemHandleRC(pVM, pVCpu, pCtx, VBOXSTRICTRC_TODO(rcStrict));
456	if (rcStrict != VINF_SUCCESS)
457	break;
458
459	/*
460	* Check and execute forced actions.
461	*/
462	#ifdef VBOX_HIGH_RES_TIMERS_HACK
463	TMTimerPollVoid(pVM, pVCpu);
464	#endif
465	if ( VM_FF_IS_PENDING(pVM, VM_FF_ALL_MASK)
466	\|\| VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_ALL_MASK))
467	{
468	rcStrict = emR3ForcedActions(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
469	VBOXVMM_EM_FF_ALL_RET(pVCpu, VBOXSTRICTRC_VAL(rcStrict));
470	if ( rcStrict != VINF_SUCCESS
471	&& rcStrict != VINF_EM_RESCHEDULE_HM)
472	{
473	*pfFFDone = true;
474	break;
475	}
476	}
477	}
478
479	/*
480	* Return to outer loop.
481	*/
482	#if defined(LOG_ENABLED) && defined(DEBUG)
483	RTLogFlush(NULL);
484	#endif
485	return rcStrict;
486	}
487

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source: vbox/trunk/src/VBox/VMM/VMMR3/EMR3Nem.cpp@ 71289

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