EMHM.cpp@ 107466

Last change on this file since 107466 was 107194, checked in by vboxsync, 2 months ago
VMM: More adjustments for VBOX_WITH_ONLY_PGM_NEM_MODE, VBOX_WITH_MINIMAL_R0, VBOX_WITH_HWVIRT and such. jiraref:VBP-1466
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 18.6 KB

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1	/* $Id: EMHM.cpp 107194 2024-11-29 14:47:06Z vboxsync $ */
2	/** @file
3	* EM - Execution Monitor / Manager - hardware virtualization
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_EM
33	#define VMCPU_INCL_CPUM_GST_CTX
34	#include <VBox/vmm/em.h>
35	#include <VBox/vmm/vmm.h>
36	#include <VBox/vmm/selm.h>
37	#include <VBox/vmm/trpm.h>
38	#include <VBox/vmm/iem.h>
39	#include <VBox/vmm/iom.h>
40	#include <VBox/vmm/dbgf.h>
41	#include <VBox/vmm/pgm.h>
42	#include <VBox/vmm/tm.h>
43	#include <VBox/vmm/mm.h>
44	#include <VBox/vmm/ssm.h>
45	#include <VBox/vmm/pdmapi.h>
46	#include <VBox/vmm/pdmcritsect.h>
47	#include <VBox/vmm/pdmqueue.h>
48	#include <VBox/vmm/hm.h>
49	#include "EMInternal.h"
50	#include <VBox/vmm/vm.h>
51	#include <VBox/vmm/gim.h>
52	#include <VBox/vmm/cpumdis.h>
53	#include <VBox/dis.h>
54	#include <VBox/err.h>
55	#include <VBox/vmm/dbgf.h>
56	#include "VMMTracing.h"
57
58	#include <iprt/asm.h>
59
60	#include "EMInline.h"
61
62	#ifndef VBOX_WITH_HWVIRT
63	# error "VBOX_WITH_HWVIRT misconfig!"
64	#endif
65
66
67	/*********************************************************************************************************************************
68	* Internal Functions *
69	*********************************************************************************************************************************/
70	static int emR3HmHandleRC(PVM pVM, PVMCPU pVCpu, int rc);
71	DECLINLINE(int) emR3HmExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC = VINF_SUCCESS);
72	static int emR3HmExecuteIOInstruction(PVM pVM, PVMCPU pVCpu);
73	static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu);
74
75	#define EMHANDLERC_WITH_HM
76	#define emR3ExecuteInstruction emR3HmExecuteInstruction
77	#define emR3ExecuteIOInstruction emR3HmExecuteIOInstruction
78	#include "EMHandleRCTmpl.h"
79
80
81	/**
82	* Executes instruction in HM mode if we can.
83	*
84	* This is somewhat comparable to REMR3EmulateInstruction.
85	*
86	* @returns VBox strict status code.
87	* @retval VINF_EM_DBG_STEPPED on success.
88	* @retval VERR_EM_CANNOT_EXEC_GUEST if we cannot execute guest instructions in
89	* HM right now.
90	*
91	* @param pVM The cross context VM structure.
92	* @param pVCpu The cross context virtual CPU structure for the calling EMT.
93	* @param fFlags Combinations of EM_ONE_INS_FLAGS_XXX.
94	* @thread EMT.
95	*/
96	VMMR3_INT_DECL(VBOXSTRICTRC) EMR3HmSingleInstruction(PVM pVM, PVMCPU pVCpu, uint32_t fFlags)
97	{
98	Assert(!(fFlags & ~EM_ONE_INS_FLAGS_MASK));
99
100	if (!HMCanExecuteGuest(pVM, pVCpu, &pVCpu->cpum.GstCtx))
101	return VINF_EM_RESCHEDULE;
102
103	uint64_t const uOldRip = pVCpu->cpum.GstCtx.rip;
104	for (;;)
105	{
106	/*
107	* Service necessary FFs before going into HM.
108	*/
109	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
110	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
111	{
112	VBOXSTRICTRC rcStrict = emR3HmForcedActions(pVM, pVCpu);
113	if (rcStrict != VINF_SUCCESS)
114	{
115	Log(("EMR3HmSingleInstruction: FFs before -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
116	return rcStrict;
117	}
118	}
119
120	/*
121	* Go execute it.
122	*/
123	bool fOld = HMSetSingleInstruction(pVM, pVCpu, true);
124	VBOXSTRICTRC rcStrict = VMMR3HmRunGC(pVM, pVCpu);
125	HMSetSingleInstruction(pVM, pVCpu, fOld);
126	LogFlow(("EMR3HmSingleInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
127
128	/*
129	* Handle high priority FFs and informational status codes. We don't do
130	* normal FF processing the caller or the next call can deal with them.
131	*/
132	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
133	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
134	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
135	{
136	rcStrict = emR3HighPriorityPostForcedActions(pVM, pVCpu, rcStrict);
137	LogFlow(("EMR3HmSingleInstruction: FFs after -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
138	}
139
140	if (rcStrict != VINF_SUCCESS && (rcStrict < VINF_EM_FIRST \|\| rcStrict > VINF_EM_LAST))
141	{
142	rcStrict = emR3HmHandleRC(pVM, pVCpu, VBOXSTRICTRC_TODO(rcStrict));
143	Log(("EMR3HmSingleInstruction: emR3HmHandleRC -> %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
144	}
145
146	/*
147	* Done?
148	*/
149	if ( (rcStrict != VINF_SUCCESS && rcStrict != VINF_EM_DBG_STEPPED)
150	\|\| !(fFlags & EM_ONE_INS_FLAGS_RIP_CHANGE)
151	\|\| pVCpu->cpum.GstCtx.rip != uOldRip)
152	{
153	if (rcStrict == VINF_SUCCESS && pVCpu->cpum.GstCtx.rip != uOldRip)
154	rcStrict = VINF_EM_DBG_STEPPED;
155	Log(("EMR3HmSingleInstruction: returns %Rrc (rip %llx -> %llx)\n", VBOXSTRICTRC_VAL(rcStrict), uOldRip, pVCpu->cpum.GstCtx.rip));
156	CPUM_IMPORT_EXTRN_RET(pVCpu, ~CPUMCTX_EXTRN_KEEPER_MASK);
157	return rcStrict;
158	}
159	}
160	}
161
162
163	/**
164	* Executes one (or perhaps a few more) instruction(s).
165	*
166	* @returns VBox status code suitable for EM.
167	*
168	* @param pVM The cross context VM structure.
169	* @param pVCpu The cross context virtual CPU structure.
170	* @param rcRC Return code from RC.
171	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
172	* instruction and prefix the log output with this text.
173	*/
174	#if defined(LOG_ENABLED) \|\| defined(DOXYGEN_RUNNING)
175	static int emR3HmExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC, const char *pszPrefix)
176	#else
177	static int emR3HmExecuteInstructionWorker(PVM pVM, PVMCPU pVCpu, int rcRC)
178	#endif
179	{
180	RT_NOREF(rcRC, pVM);
181
182	#ifdef LOG_ENABLED
183	/*
184	* Log it.
185	*/
186	Log(("EMINS: %04x:%RGv RSP=%RGv\n", pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip, (RTGCPTR)pVCpu->cpum.GstCtx.rsp));
187	if (pszPrefix)
188	{
189	DBGFR3_INFO_LOG(pVM, pVCpu, "cpumguest", pszPrefix);
190	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, pszPrefix);
191	}
192	#endif
193
194	/*
195	* Use IEM and fallback on REM if the functionality is missing.
196	* Once IEM gets mature enough, nothing should ever fall back.
197	*/
198	STAM_PROFILE_START(&pVCpu->em.s.StatIEMEmu, a);
199	VBOXSTRICTRC rcStrict;
200	uint32_t idxContinueExitRec = pVCpu->em.s.idxContinueExitRec;
201	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
202	if (idxContinueExitRec >= RT_ELEMENTS(pVCpu->em.s.aExitRecords))
203	{
204	CPUM_IMPORT_EXTRN_RET(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
205	rcStrict = VBOXSTRICTRC_TODO(IEMExecOne(pVCpu));
206	}
207	else
208	{
209	RT_UNTRUSTED_VALIDATED_FENCE();
210	rcStrict = EMHistoryExec(pVCpu, &pVCpu->em.s.aExitRecords[idxContinueExitRec], 0);
211	LogFlow(("emR3HmExecuteInstruction: %Rrc (EMHistoryExec)\n", VBOXSTRICTRC_VAL(rcStrict)));
212	}
213	STAM_PROFILE_STOP(&pVCpu->em.s.StatIEMEmu, a);
214
215	return VBOXSTRICTRC_TODO(rcStrict);
216	}
217
218
219	/**
220	* Executes one (or perhaps a few more) instruction(s).
221	* This is just a wrapper for discarding pszPrefix in non-logging builds.
222	*
223	* @returns VBox status code suitable for EM.
224	* @param pVM The cross context VM structure.
225	* @param pVCpu The cross context virtual CPU structure.
226	* @param pszPrefix Disassembly prefix. If not NULL we'll disassemble the
227	* instruction and prefix the log output with this text.
228	* @param rcGC GC return code
229	*/
230	DECLINLINE(int) emR3HmExecuteInstruction(PVM pVM, PVMCPU pVCpu, const char *pszPrefix, int rcGC)
231	{
232	#ifdef LOG_ENABLED
233	return emR3HmExecuteInstructionWorker(pVM, pVCpu, rcGC, pszPrefix);
234	#else
235	RT_NOREF_PV(pszPrefix);
236	return emR3HmExecuteInstructionWorker(pVM, pVCpu, rcGC);
237	#endif
238	}
239
240
241	/**
242	* Executes one (or perhaps a few more) IO instruction(s).
243	*
244	* @returns VBox status code suitable for EM.
245	* @param pVM The cross context VM structure.
246	* @param pVCpu The cross context virtual CPU structure.
247	*/
248	static int emR3HmExecuteIOInstruction(PVM pVM, PVMCPU pVCpu)
249	{
250	RT_NOREF(pVM);
251	STAM_PROFILE_START(&pVCpu->em.s.StatIOEmu, a);
252
253	VBOXSTRICTRC rcStrict;
254	uint32_t idxContinueExitRec = pVCpu->em.s.idxContinueExitRec;
255	RT_UNTRUSTED_NONVOLATILE_COPY_FENCE();
256	if (idxContinueExitRec >= RT_ELEMENTS(pVCpu->em.s.aExitRecords))
257	{
258	/*
259	* Hand it over to the interpreter.
260	*/
261	CPUM_IMPORT_EXTRN_RET(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
262	rcStrict = IEMExecOne(pVCpu);
263	LogFlow(("emR3HmExecuteIOInstruction: %Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
264	}
265	else
266	{
267	RT_UNTRUSTED_VALIDATED_FENCE();
268	CPUM_IMPORT_EXTRN_RET(pVCpu, IEM_CPUMCTX_EXTRN_MUST_MASK);
269	rcStrict = EMHistoryExec(pVCpu, &pVCpu->em.s.aExitRecords[idxContinueExitRec], 0);
270	LogFlow(("emR3HmExecuteIOInstruction: %Rrc (EMHistoryExec)\n", VBOXSTRICTRC_VAL(rcStrict)));
271	STAM_COUNTER_INC(&pVCpu->em.s.StatIoRestarted);
272	}
273
274	STAM_COUNTER_INC(&pVCpu->em.s.StatIoIem);
275	STAM_PROFILE_STOP(&pVCpu->em.s.StatIOEmu, a);
276	return VBOXSTRICTRC_TODO(rcStrict);
277	}
278
279
280	/**
281	* Process HM specific forced actions.
282	*
283	* This function is called when any FFs in the VM_FF_HIGH_PRIORITY_PRE_RAW_MASK
284	* or/and VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK are pending.
285	*
286	* @returns VBox status code. May return VINF_EM_NO_MEMORY but none of the other
287	* EM statuses.
288	* @param pVM The cross context VM structure.
289	* @param pVCpu The cross context virtual CPU structure.
290	*/
291	static int emR3HmForcedActions(PVM pVM, PVMCPU pVCpu)
292	{
293	/*
294	* Sync page directory.
295	*/
296	if (VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3 \| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
297	{
298	CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_CR0 \| CPUMCTX_EXTRN_CR3 \| CPUMCTX_EXTRN_CR4);
299	Assert(pVCpu->em.s.enmState != EMSTATE_WAIT_SIPI);
300	int rc = PGMSyncCR3(pVCpu, pVCpu->cpum.GstCtx.cr0, pVCpu->cpum.GstCtx.cr3, pVCpu->cpum.GstCtx.cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
301	if (RT_FAILURE(rc))
302	return rc;
303
304	/* Prefetch pages for EIP and ESP. */
305	/** @todo This is rather expensive. Should investigate if it really helps at all. */
306	/** @todo this should be skipped! */
307	CPUM_IMPORT_EXTRN_RET(pVCpu, CPUMCTX_EXTRN_CS \| CPUMCTX_EXTRN_SS);
308	rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVCpu, X86_SREG_CS, &pVCpu->cpum.GstCtx, pVCpu->cpum.GstCtx.rip));
309	if (rc == VINF_SUCCESS)
310	rc = PGMPrefetchPage(pVCpu, SELMToFlat(pVCpu, X86_SREG_SS, &pVCpu->cpum.GstCtx, pVCpu->cpum.GstCtx.rsp));
311	if (rc != VINF_SUCCESS)
312	{
313	if (rc != VINF_PGM_SYNC_CR3)
314	{
315	AssertLogRelMsgReturn(RT_FAILURE(rc), ("%Rrc\n", rc), VERR_IPE_UNEXPECTED_INFO_STATUS);
316	return rc;
317	}
318	rc = PGMSyncCR3(pVCpu, pVCpu->cpum.GstCtx.cr0, pVCpu->cpum.GstCtx.cr3, pVCpu->cpum.GstCtx.cr4, VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
319	if (RT_FAILURE(rc))
320	return rc;
321	}
322	/** @todo maybe prefetch the supervisor stack page as well */
323	}
324
325	/*
326	* Allocate handy pages (just in case the above actions have consumed some pages).
327	*/
328	if (VM_FF_IS_PENDING_EXCEPT(pVM, VM_FF_PGM_NEED_HANDY_PAGES, VM_FF_PGM_NO_MEMORY))
329	{
330	int rc = PGMR3PhysAllocateHandyPages(pVM);
331	if (RT_FAILURE(rc))
332	return rc;
333	}
334
335	/*
336	* Check whether we're out of memory now.
337	*
338	* This may stem from some of the above actions or operations that has been executed
339	* since we ran FFs. The allocate handy pages must for instance always be followed by
340	* this check.
341	*/
342	if (VM_FF_IS_SET(pVM, VM_FF_PGM_NO_MEMORY))
343	return VINF_EM_NO_MEMORY;
344
345	return VINF_SUCCESS;
346	}
347
348
349	/**
350	* Executes hardware accelerated raw code. (Intel VT-x & AMD-V)
351	*
352	* This function contains the inner EM execution loop for HM (the outer loop
353	* being in EMR3ExecuteVM()).
354	*
355	* @returns VBox status code. The most important ones are: VINF_EM_RESCHEDULE,
356	* VINF_EM_RESCHEDULE_REM, VINF_EM_SUSPEND, VINF_EM_RESET and VINF_EM_TERMINATE.
357	*
358	* @param pVM The cross context VM structure.
359	* @param pVCpu The cross context virtual CPU structure.
360	* @param pfFFDone Where to store an indicator telling whether or not
361	* FFs were done before returning.
362	*/
363	int emR3HmExecute(PVM pVM, PVMCPU pVCpu, bool *pfFFDone)
364	{
365	int rc = VERR_IPE_UNINITIALIZED_STATUS;
366
367	LogFlow(("emR3HmExecute%d: (cs:eip=%04x:%RGv)\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip));
368	*pfFFDone = false;
369
370	STAM_REL_COUNTER_INC(&pVCpu->em.s.StatHMExecuteCalled);
371
372	/*
373	* Spin till we get a forced action which returns anything but VINF_SUCCESS.
374	*/
375	for (;;)
376	{
377	STAM_PROFILE_ADV_START(&pVCpu->em.s.StatHMEntry, a);
378
379	/* Check if a forced reschedule is pending. */
380	if (HMR3IsRescheduleRequired(pVM, &pVCpu->cpum.GstCtx))
381	{
382	rc = VINF_EM_RESCHEDULE;
383	break;
384	}
385
386	/*
387	* Process high priority pre-execution raw-mode FFs.
388	*/
389	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_PRE_RAW_MASK)
390	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_PRE_RAW_MASK))
391	{
392	rc = emR3HmForcedActions(pVM, pVCpu);
393	if (rc != VINF_SUCCESS)
394	break;
395	}
396
397	#ifdef LOG_ENABLED
398	/*
399	* Log important stuff before entering GC.
400	*/
401	if (TRPMHasTrap(pVCpu))
402	Log(("CPU%d: Pending hardware interrupt=0x%x cs:rip=%04X:%RGv\n", pVCpu->idCpu, TRPMGetTrapNo(pVCpu), pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip));
403
404	uint32_t cpl = CPUMGetGuestCPL(pVCpu);
405	if (pVM->cCpus == 1)
406	{
407	if (pVCpu->cpum.GstCtx.eflags.Bits.u1VM)
408	Log(("HWV86: %08X IF=%d\n", pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.eflags.Bits.u1IF));
409	else if (CPUMIsGuestIn64BitCodeEx(&pVCpu->cpum.GstCtx))
410	Log(("HWR%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.rsp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
411	else
412	Log(("HWR%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.esp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
413	}
414	else
415	{
416	if (pVCpu->cpum.GstCtx.eflags.Bits.u1VM)
417	Log(("HWV86-CPU%d: %08X IF=%d\n", pVCpu->idCpu, pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.eflags.Bits.u1IF));
418	else if (CPUMIsGuestIn64BitCodeEx(&pVCpu->cpum.GstCtx))
419	Log(("HWR%d-CPU%d: %04X:%RGv ESP=%RGv IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, (RTGCPTR)pVCpu->cpum.GstCtx.rip, pVCpu->cpum.GstCtx.rsp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
420	else
421	Log(("HWR%d-CPU%d: %04X:%08X ESP=%08X IF=%d IOPL=%d CR0=%x CR4=%x EFER=%x\n", cpl, pVCpu->idCpu, pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.eip, pVCpu->cpum.GstCtx.esp, pVCpu->cpum.GstCtx.eflags.Bits.u1IF, pVCpu->cpum.GstCtx.eflags.Bits.u2IOPL, (uint32_t)pVCpu->cpum.GstCtx.cr0, (uint32_t)pVCpu->cpum.GstCtx.cr4, (uint32_t)pVCpu->cpum.GstCtx.msrEFER));
422	}
423	#endif /* LOG_ENABLED */
424
425	/*
426	* Execute the code.
427	*/
428	STAM_PROFILE_ADV_STOP(&pVCpu->em.s.StatHMEntry, a);
429
430	if (RT_LIKELY(emR3IsExecutionAllowed(pVM, pVCpu)))
431	{
432	STAM_REL_PROFILE_START(&pVCpu->em.s.StatHMExec, x);
433	rc = VMMR3HmRunGC(pVM, pVCpu);
434	STAM_REL_PROFILE_STOP(&pVCpu->em.s.StatHMExec, x);
435	}
436	else
437	{
438	/* Give up this time slice; virtual time continues */
439	STAM_REL_PROFILE_ADV_START(&pVCpu->em.s.StatCapped, u);
440	RTThreadSleep(5);
441	STAM_REL_PROFILE_ADV_STOP(&pVCpu->em.s.StatCapped, u);
442	rc = VINF_SUCCESS;
443	}
444
445
446	/*
447	* Deal with high priority post execution FFs before doing anything else.
448	*/
449	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_RESUME_GUEST_MASK);
450	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_HIGH_PRIORITY_POST_MASK)
451	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_HIGH_PRIORITY_POST_MASK))
452	rc = VBOXSTRICTRC_TODO(emR3HighPriorityPostForcedActions(pVM, pVCpu, rc));
453
454	/*
455	* Process the returned status code.
456	*/
457	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
458	break;
459
460	rc = emR3HmHandleRC(pVM, pVCpu, rc);
461	if (rc != VINF_SUCCESS)
462	break;
463
464	/*
465	* Check and execute forced actions.
466	*/
467	#ifdef VBOX_HIGH_RES_TIMERS_HACK
468	TMTimerPollVoid(pVM, pVCpu);
469	#endif
470	if ( VM_FF_IS_ANY_SET(pVM, VM_FF_ALL_MASK)
471	\|\| VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_ALL_MASK))
472	{
473	rc = emR3ForcedActions(pVM, pVCpu, rc);
474	VBOXVMM_EM_FF_ALL_RET(pVCpu, rc);
475	if ( rc != VINF_SUCCESS
476	&& rc != VINF_EM_RESCHEDULE_EXEC_ENGINE)
477	{
478	*pfFFDone = true;
479	break;
480	}
481	}
482	}
483
484	/*
485	* Return to outer loop.
486	*/
487	#if defined(LOG_ENABLED) && defined(DEBUG)
488	RTLogFlush(NULL);
489	#endif
490	return rc;
491	}
492

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source: vbox/trunk/src/VBox/VMM/VMMR3/EMHM.cpp@ 107466

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