VMM.cpp@ 87819

Last change on this file since 87819 was 87819, checked in by vboxsync, 4 years ago
VMM: Disabled the EMT yield timer as it is out dated (multi core CPUs) and will be pointless when timers move off the EMTs. bugref:9943
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1	/* $Id: VMM.cpp 87819 2021-02-20 10:24:03Z vboxsync $ */
2	/** @file
3	* VMM - The Virtual Machine Monitor Core.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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	//#define NO_SUPCALLR0VMM
19
20	/** @page pg_vmm VMM - The Virtual Machine Monitor
21	*
22	* The VMM component is two things at the moment, it's a component doing a few
23	* management and routing tasks, and it's the whole virtual machine monitor
24	* thing. For hysterical reasons, it is not doing all the management that one
25	* would expect, this is instead done by @ref pg_vm. We'll address this
26	* misdesign eventually, maybe.
27	*
28	* VMM is made up of these components:
29	* - @subpage pg_cfgm
30	* - @subpage pg_cpum
31	* - @subpage pg_dbgf
32	* - @subpage pg_em
33	* - @subpage pg_gim
34	* - @subpage pg_gmm
35	* - @subpage pg_gvmm
36	* - @subpage pg_hm
37	* - @subpage pg_iem
38	* - @subpage pg_iom
39	* - @subpage pg_mm
40	* - @subpage pg_nem
41	* - @subpage pg_pdm
42	* - @subpage pg_pgm
43	* - @subpage pg_selm
44	* - @subpage pg_ssm
45	* - @subpage pg_stam
46	* - @subpage pg_tm
47	* - @subpage pg_trpm
48	* - @subpage pg_vm
49	*
50	*
51	* @see @ref grp_vmm @ref grp_vm @subpage pg_vmm_guideline @subpage pg_raw
52	*
53	*
54	* @section sec_vmmstate VMM State
55	*
56	* @image html VM_Statechart_Diagram.gif
57	*
58	* To be written.
59	*
60	*
61	* @subsection subsec_vmm_init VMM Initialization
62	*
63	* To be written.
64	*
65	*
66	* @subsection subsec_vmm_term VMM Termination
67	*
68	* To be written.
69	*
70	*
71	* @section sec_vmm_limits VMM Limits
72	*
73	* There are various resource limits imposed by the VMM and it's
74	* sub-components. We'll list some of them here.
75	*
76	* On 64-bit hosts:
77	* - Max 8191 VMs. Imposed by GVMM's handle allocation (GVMM_MAX_HANDLES),
78	* can be increased up to 64K - 1.
79	* - Max 16TB - 64KB of the host memory can be used for backing VM RAM and
80	* ROM pages. The limit is imposed by the 32-bit page ID used by GMM.
81	* - A VM can be assigned all the memory we can use (16TB), however, the
82	* Main API will restrict this to 2TB (MM_RAM_MAX_IN_MB).
83	* - Max 32 virtual CPUs (VMM_MAX_CPU_COUNT).
84	*
85	* On 32-bit hosts:
86	* - Max 127 VMs. Imposed by GMM's per page structure.
87	* - Max 64GB - 64KB of the host memory can be used for backing VM RAM and
88	* ROM pages. The limit is imposed by the 28-bit page ID used
89	* internally in GMM. It is also limited by PAE.
90	* - A VM can be assigned all the memory GMM can allocate, however, the
91	* Main API will restrict this to 3584MB (MM_RAM_MAX_IN_MB).
92	* - Max 32 virtual CPUs (VMM_MAX_CPU_COUNT).
93	*
94	*/
95
96
97	/*********************************************************************************************************************************
98	* Header Files *
99	*********************************************************************************************************************************/
100	#define LOG_GROUP LOG_GROUP_VMM
101	#include <VBox/vmm/vmm.h>
102	#include <VBox/vmm/vmapi.h>
103	#include <VBox/vmm/pgm.h>
104	#include <VBox/vmm/cfgm.h>
105	#include <VBox/vmm/pdmqueue.h>
106	#include <VBox/vmm/pdmcritsect.h>
107	#include <VBox/vmm/pdmcritsectrw.h>
108	#include <VBox/vmm/pdmapi.h>
109	#include <VBox/vmm/cpum.h>
110	#include <VBox/vmm/gim.h>
111	#include <VBox/vmm/mm.h>
112	#include <VBox/vmm/nem.h>
113	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
114	# include <VBox/vmm/iem.h>
115	#endif
116	#include <VBox/vmm/iom.h>
117	#include <VBox/vmm/trpm.h>
118	#include <VBox/vmm/selm.h>
119	#include <VBox/vmm/em.h>
120	#include <VBox/sup.h>
121	#include <VBox/vmm/dbgf.h>
122	#include <VBox/vmm/apic.h>
123	#include <VBox/vmm/ssm.h>
124	#include <VBox/vmm/tm.h>
125	#include "VMMInternal.h"
126	#include <VBox/vmm/vmcc.h>
127
128	#include <VBox/err.h>
129	#include <VBox/param.h>
130	#include <VBox/version.h>
131	#include <VBox/vmm/hm.h>
132	#include <iprt/assert.h>
133	#include <iprt/alloc.h>
134	#include <iprt/asm.h>
135	#include <iprt/time.h>
136	#include <iprt/semaphore.h>
137	#include <iprt/stream.h>
138	#include <iprt/string.h>
139	#include <iprt/stdarg.h>
140	#include <iprt/ctype.h>
141	#include <iprt/x86.h>
142
143
144	/*********************************************************************************************************************************
145	* Defined Constants And Macros *
146	*********************************************************************************************************************************/
147	/** The saved state version. */
148	#define VMM_SAVED_STATE_VERSION 4
149	/** The saved state version used by v3.0 and earlier. (Teleportation) */
150	#define VMM_SAVED_STATE_VERSION_3_0 3
151
152	/** Macro for flushing the ring-0 logging. */
153	#define VMM_FLUSH_R0_LOG(a_pR0Logger, a_pR3Logger) \
154	do { \
155	PVMMR0LOGGER pVmmLogger = (a_pR0Logger); \
156	if (!pVmmLogger \|\| pVmmLogger->Logger.offScratch == 0) \
157	{ /* likely? */ } \
158	else \
159	RTLogFlushR0(a_pR3Logger, &pVmmLogger->Logger); \
160	} while (0)
161
162
163	/*********************************************************************************************************************************
164	* Internal Functions *
165	*********************************************************************************************************************************/
166	static int vmmR3InitStacks(PVM pVM);
167	static int vmmR3InitLoggers(PVM pVM);
168	static void vmmR3InitRegisterStats(PVM pVM);
169	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM);
170	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
171	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, TMTIMERHANDLE hTimer, void *pvUser);
172	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
173	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser);
174	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu);
175	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
176
177
178	/**
179	* Initializes the VMM.
180	*
181	* @returns VBox status code.
182	* @param pVM The cross context VM structure.
183	*/
184	VMMR3_INT_DECL(int) VMMR3Init(PVM pVM)
185	{
186	LogFlow(("VMMR3Init\n"));
187
188	/*
189	* Assert alignment, sizes and order.
190	*/
191	AssertCompile(sizeof(pVM->vmm.s) <= sizeof(pVM->vmm.padding));
192	AssertCompile(RT_SIZEOFMEMB(VMCPU, vmm.s) <= RT_SIZEOFMEMB(VMCPU, vmm.padding));
193
194	/*
195	* Init basic VM VMM members.
196	*/
197	pVM->vmm.s.pahEvtRendezvousEnterOrdered = NULL;
198	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
199	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
200	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
201	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
202	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
203	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
204	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
205	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
206
207	#if 0 /* pointless when timers doesn't run on EMT */
208	/** @cfgm{/YieldEMTInterval, uint32_t, 1, UINT32_MAX, 23, ms}
209	* The EMT yield interval. The EMT yielding is a hack we employ to play a
210	* bit nicer with the rest of the system (like for instance the GUI).
211	*/
212	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "YieldEMTInterval", &pVM->vmm.s.cYieldEveryMillies,
213	23 /* Value arrived at after experimenting with the grub boot prompt. */);
214	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"YieldEMTInterval\", rc=%Rrc\n", rc), rc);
215	#endif
216
217	/** @cfgm{/VMM/UsePeriodicPreemptionTimers, boolean, true}
218	* Controls whether we employ per-cpu preemption timers to limit the time
219	* spent executing guest code. This option is not available on all
220	* platforms and we will silently ignore this setting then. If we are
221	* running in VT-x mode, we will use the VMX-preemption timer instead of
222	* this one when possible.
223	*/
224	PCFGMNODE pCfgVMM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "VMM");
225	int rc = CFGMR3QueryBoolDef(pCfgVMM, "UsePeriodicPreemptionTimers", &pVM->vmm.s.fUsePeriodicPreemptionTimers, true);
226	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"VMM/UsePeriodicPreemptionTimers\", rc=%Rrc\n", rc), rc);
227
228	/*
229	* Initialize the VMM rendezvous semaphores.
230	*/
231	pVM->vmm.s.pahEvtRendezvousEnterOrdered = (PRTSEMEVENT)MMR3HeapAlloc(pVM, MM_TAG_VMM, sizeof(RTSEMEVENT) * pVM->cCpus);
232	if (!pVM->vmm.s.pahEvtRendezvousEnterOrdered)
233	return VERR_NO_MEMORY;
234	for (VMCPUID i = 0; i < pVM->cCpus; i++)
235	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
236	for (VMCPUID i = 0; i < pVM->cCpus; i++)
237	{
238	rc = RTSemEventCreate(&pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
239	AssertRCReturn(rc, rc);
240	}
241	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousEnterOneByOne);
242	AssertRCReturn(rc, rc);
243	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
244	AssertRCReturn(rc, rc);
245	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousDone);
246	AssertRCReturn(rc, rc);
247	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousDoneCaller);
248	AssertRCReturn(rc, rc);
249	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPush);
250	AssertRCReturn(rc, rc);
251	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPop);
252	AssertRCReturn(rc, rc);
253	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
254	AssertRCReturn(rc, rc);
255	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
256	AssertRCReturn(rc, rc);
257
258	/*
259	* Register the saved state data unit.
260	*/
261	rc = SSMR3RegisterInternal(pVM, "vmm", 1, VMM_SAVED_STATE_VERSION, VMM_STACK_SIZE + sizeof(RTGCPTR),
262	NULL, NULL, NULL,
263	NULL, vmmR3Save, NULL,
264	NULL, vmmR3Load, NULL);
265	if (RT_FAILURE(rc))
266	return rc;
267
268	/*
269	* Register the Ring-0 VM handle with the session for fast ioctl calls.
270	*/
271	rc = SUPR3SetVMForFastIOCtl(VMCC_GET_VMR0_FOR_CALL(pVM));
272	if (RT_FAILURE(rc))
273	return rc;
274
275	/*
276	* Init various sub-components.
277	*/
278	rc = vmmR3InitStacks(pVM);
279	if (RT_SUCCESS(rc))
280	{
281	rc = vmmR3InitLoggers(pVM);
282
283	#ifdef VBOX_WITH_NMI
284	/*
285	* Allocate mapping for the host APIC.
286	*/
287	if (RT_SUCCESS(rc))
288	{
289	rc = MMR3HyperReserve(pVM, PAGE_SIZE, "Host APIC", &pVM->vmm.s.GCPtrApicBase);
290	AssertRC(rc);
291	}
292	#endif
293	if (RT_SUCCESS(rc))
294	{
295	/*
296	* Debug info and statistics.
297	*/
298	DBGFR3InfoRegisterInternal(pVM, "fflags", "Displays the current Forced actions Flags.", vmmR3InfoFF);
299	vmmR3InitRegisterStats(pVM);
300	vmmInitFormatTypes();
301
302	return VINF_SUCCESS;
303	}
304	}
305	/** @todo Need failure cleanup? */
306
307	return rc;
308	}
309
310
311	/**
312	* Allocate & setup the VMM RC stack(s) (for EMTs).
313	*
314	* The stacks are also used for long jumps in Ring-0.
315	*
316	* @returns VBox status code.
317	* @param pVM The cross context VM structure.
318	*
319	* @remarks The optional guard page gets it protection setup up during R3 init
320	* completion because of init order issues.
321	*/
322	static int vmmR3InitStacks(PVM pVM)
323	{
324	int rc = VINF_SUCCESS;
325	#ifdef VMM_R0_SWITCH_STACK
326	uint32_t fFlags = MMHYPER_AONR_FLAGS_KERNEL_MAPPING;
327	#else
328	uint32_t fFlags = 0;
329	#endif
330
331	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
332	{
333	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
334
335	#ifdef VBOX_STRICT_VMM_STACK
336	rc = MMR3HyperAllocOnceNoRelEx(pVM, PAGE_SIZE + VMM_STACK_SIZE + PAGE_SIZE,
337	#else
338	rc = MMR3HyperAllocOnceNoRelEx(pVM, VMM_STACK_SIZE,
339	#endif
340	PAGE_SIZE, MM_TAG_VMM, fFlags, (void **)&pVCpu->vmm.s.pbEMTStackR3);
341	if (RT_SUCCESS(rc))
342	{
343	#ifdef VBOX_STRICT_VMM_STACK
344	pVCpu->vmm.s.pbEMTStackR3 += PAGE_SIZE;
345	#endif
346	pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
347
348	}
349	}
350
351	return rc;
352	}
353
354
355	/**
356	* Initialize the loggers.
357	*
358	* @returns VBox status code.
359	* @param pVM The cross context VM structure.
360	*/
361	static int vmmR3InitLoggers(PVM pVM)
362	{
363	int rc;
364	#define RTLogCalcSizeForR0(cGroups, fFlags) (RT_UOFFSETOF_DYN(VMMR0LOGGER, Logger.afGroups[cGroups]) + PAGE_SIZE)
365
366	/*
367	* Allocate R0 Logger instance (finalized in the relocator).
368	*/
369	#if defined(LOG_ENABLED) && defined(VBOX_WITH_R0_LOGGING)
370	PRTLOGGER pLogger = RTLogDefaultInstance();
371	if (pLogger)
372	{
373	size_t const cbLogger = RTLogCalcSizeForR0(pLogger->cGroups, 0);
374	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
375	{
376	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
377	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
378	(void **)&pVCpu->vmm.s.pR0LoggerR3);
379	if (RT_FAILURE(rc))
380	return rc;
381	pVCpu->vmm.s.pR0LoggerR3->pVM = VMCC_GET_VMR0_FOR_CALL(pVM);
382	//pVCpu->vmm.s.pR0LoggerR3->fCreated = false;
383	pVCpu->vmm.s.pR0LoggerR3->cbLogger = (uint32_t)cbLogger;
384	pVCpu->vmm.s.pR0LoggerR0 = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pR0LoggerR3);
385	}
386	}
387	#endif /* LOG_ENABLED && VBOX_WITH_R0_LOGGING */
388
389	/*
390	* Release logging.
391	*/
392	PRTLOGGER pRelLogger = RTLogRelGetDefaultInstance();
393	if (pRelLogger)
394	{
395	/*
396	* Ring-0 release logger.
397	*/
398	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
399	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
400	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
401
402	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
403	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
404	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
405
406	size_t const cbLogger = RTLogCalcSizeForR0(pRelLogger->cGroups, 0);
407
408	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
409	{
410	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
411	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
412	(void **)&pVCpu->vmm.s.pR0RelLoggerR3);
413	if (RT_FAILURE(rc))
414	return rc;
415	PVMMR0LOGGER pVmmLogger = pVCpu->vmm.s.pR0RelLoggerR3;
416	RTR0PTR R0PtrVmmLogger = MMHyperR3ToR0(pVM, pVmmLogger);
417	pVCpu->vmm.s.pR0RelLoggerR0 = R0PtrVmmLogger;
418	pVmmLogger->pVM = VMCC_GET_VMR0_FOR_CALL(pVM);
419	pVmmLogger->cbLogger = (uint32_t)cbLogger;
420	pVmmLogger->fCreated = false;
421	pVmmLogger->fFlushingDisabled = false;
422	pVmmLogger->fRegistered = false;
423	pVmmLogger->idCpu = idCpu;
424
425	char szR0ThreadName[16];
426	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", idCpu);
427	rc = RTLogCreateForR0(&pVmmLogger->Logger, pVmmLogger->cbLogger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
428	pfnLoggerWrapper, pfnLoggerFlush,
429	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
430	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
431
432	/* We only update the release log instance here. */
433	rc = RTLogCopyGroupsAndFlagsForR0(&pVmmLogger->Logger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
434	pRelLogger, RTLOGFLAGS_BUFFERED, UINT32_MAX);
435	AssertReleaseMsgRCReturn(rc, ("RTLogCopyGroupsAndFlagsForR0 failed! rc=%Rra\n", rc), rc);
436
437	pVmmLogger->fCreated = true;
438	}
439	}
440
441	return VINF_SUCCESS;
442	}
443
444
445	/**
446	* VMMR3Init worker that register the statistics with STAM.
447	*
448	* @param pVM The cross context VM structure.
449	*/
450	static void vmmR3InitRegisterStats(PVM pVM)
451	{
452	RT_NOREF_PV(pVM);
453
454	/*
455	* Statistics.
456	*/
457	STAM_REG(pVM, &pVM->vmm.s.StatRunGC, STAMTYPE_COUNTER, "/VMM/RunGC", STAMUNIT_OCCURENCES, "Number of context switches.");
458	STAM_REG(pVM, &pVM->vmm.s.StatRZRetNormal, STAMTYPE_COUNTER, "/VMM/RZRet/Normal", STAMUNIT_OCCURENCES, "Number of VINF_SUCCESS returns.");
459	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterrupt, STAMTYPE_COUNTER, "/VMM/RZRet/Interrupt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT returns.");
460	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptHyper, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptHyper", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_HYPER returns.");
461	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGuestTrap, STAMTYPE_COUNTER, "/VMM/RZRet/GuestTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_GUEST_TRAP returns.");
462	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitch, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitch", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH returns.");
463	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitchInt, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitchInt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH_INT returns.");
464	STAM_REG(pVM, &pVM->vmm.s.StatRZRetStaleSelector, STAMTYPE_COUNTER, "/VMM/RZRet/StaleSelector", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_STALE_SELECTOR returns.");
465	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIRETTrap, STAMTYPE_COUNTER, "/VMM/RZRet/IRETTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_IRET_TRAP returns.");
466	STAM_REG(pVM, &pVM->vmm.s.StatRZRetEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/Emulate", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION returns.");
467	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/PatchEmulate", STAMUNIT_OCCURENCES, "Number of VINF_PATCH_EMULATE_INSTR returns.");
468	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIORead, STAMTYPE_COUNTER, "/VMM/RZRet/IORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_READ returns.");
469	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_WRITE returns.");
470	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_COMMIT_WRITE returns.");
471	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIORead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ returns.");
472	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_WRITE returns.");
473	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_COMMIT_WRITE returns.");
474	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOReadWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOReadWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ_WRITE returns.");
475	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchRead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchRead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_READ returns.");
476	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_WRITE returns.");
477	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRRead, STAMTYPE_COUNTER, "/VMM/RZRet/MSRRead", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_READ returns.");
478	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MSRWrite", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_WRITE returns.");
479	STAM_REG(pVM, &pVM->vmm.s.StatRZRetLDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/LDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_GDT_FAULT returns.");
480	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/GDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_LDT_FAULT returns.");
481	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/IDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_IDT_FAULT returns.");
482	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTSSFault, STAMTYPE_COUNTER, "/VMM/RZRet/TSSFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_TSS_FAULT returns.");
483	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCSAMTask, STAMTYPE_COUNTER, "/VMM/RZRet/CSAMTask", STAMUNIT_OCCURENCES, "Number of VINF_CSAM_PENDING_ACTION returns.");
484	STAM_REG(pVM, &pVM->vmm.s.StatRZRetSyncCR3, STAMTYPE_COUNTER, "/VMM/RZRet/SyncCR", STAMUNIT_OCCURENCES, "Number of VINF_PGM_SYNC_CR3 returns.");
485	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMisc, STAMTYPE_COUNTER, "/VMM/RZRet/Misc", STAMUNIT_OCCURENCES, "Number of misc returns.");
486	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchInt3, STAMTYPE_COUNTER, "/VMM/RZRet/PatchInt3", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_INT3 returns.");
487	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchPF, STAMTYPE_COUNTER, "/VMM/RZRet/PatchPF", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_PF returns.");
488	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchGP, STAMTYPE_COUNTER, "/VMM/RZRet/PatchGP", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_GP returns.");
489	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchIretIRQ, STAMTYPE_COUNTER, "/VMM/RZRet/PatchIret", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PENDING_IRQ_AFTER_IRET returns.");
490	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRescheduleREM, STAMTYPE_COUNTER, "/VMM/RZRet/ScheduleREM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RESCHEDULE_REM returns.");
491	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Total, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns.");
492	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Unknown, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/Unknown", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns without responsible force flag.");
493	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3FF, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/ToR3", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VMCPU_FF_TO_R3.");
494	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3TMVirt, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/TMVirt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VM_FF_TM_VIRTUAL_SYNC.");
495	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3HandyPages, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/Handy", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VM_FF_PGM_NEED_HANDY_PAGES.");
496	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3PDMQueues, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/PDMQueue", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VM_FF_PDM_QUEUES.");
497	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Rendezvous, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/Rendezvous", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VM_FF_EMT_RENDEZVOUS.");
498	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Timer, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/Timer", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VMCPU_FF_TIMER.");
499	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3DMA, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/DMA", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VM_FF_PDM_DMA.");
500	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3CritSect, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/CritSect", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VMCPU_FF_PDM_CRITSECT.");
501	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Iem, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/IEM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VMCPU_FF_IEM.");
502	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Iom, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3/IOM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns with VMCPU_FF_IOM.");
503	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTimerPending, STAMTYPE_COUNTER, "/VMM/RZRet/TimerPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TIMER_PENDING returns.");
504	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptPending, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_PENDING returns.");
505	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPATMDuplicateFn, STAMTYPE_COUNTER, "/VMM/RZRet/PATMDuplicateFn", STAMUNIT_OCCURENCES, "Number of VINF_PATM_DUPLICATE_FUNCTION returns.");
506	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMChangeMode, STAMTYPE_COUNTER, "/VMM/RZRet/PGMChangeMode", STAMUNIT_OCCURENCES, "Number of VINF_PGM_CHANGE_MODE returns.");
507	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMFlushPending, STAMTYPE_COUNTER, "/VMM/RZRet/PGMFlushPending", STAMUNIT_OCCURENCES, "Number of VINF_PGM_POOL_FLUSH_PENDING returns.");
508	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPendingRequest, STAMTYPE_COUNTER, "/VMM/RZRet/PendingRequest", STAMUNIT_OCCURENCES, "Number of VINF_EM_PENDING_REQUEST returns.");
509	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchTPR, STAMTYPE_COUNTER, "/VMM/RZRet/PatchTPR", STAMUNIT_OCCURENCES, "Number of VINF_EM_HM_PATCH_TPR_INSTR returns.");
510	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCallRing3, STAMTYPE_COUNTER, "/VMM/RZCallR3/Misc", STAMUNIT_OCCURENCES, "Number of Other ring-3 calls.");
511	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_LOCK calls.");
512	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMCritSectEnter, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMCritSectEnter", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_CRITSECT_ENTER calls.");
513	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_LOCK calls.");
514	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMPoolGrow, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMPoolGrow", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_POOL_GROW calls.");
515	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMMapChunk, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMMapChunk", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_MAP_CHUNK calls.");
516	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMAllocHandy, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMAllocHandy", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES calls.");
517	STAM_REG(pVM, &pVM->vmm.s.StatRZCallLogFlush, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMMLogFlush", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VMM_LOGGER_FLUSH calls.");
518	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMSetError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_ERROR calls.");
519	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetRuntimeError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMRuntimeError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_RUNTIME_ERROR calls.");
520
521	#ifdef VBOX_WITH_STATISTICS
522	for (VMCPUID i = 0; i < pVM->cCpus; i++)
523	{
524	PVMCPU pVCpu = pVM->apCpusR3[i];
525	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cbUsedMax, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Max amount of stack used.", "/VMM/Stack/CPU%u/Max", i);
526	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cbUsedAvg, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Average stack usage.", "/VMM/Stack/CPU%u/Avg", i);
527	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cUsedTotal, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of stack usages.", "/VMM/Stack/CPU%u/Uses", i);
528	}
529	#endif
530	for (VMCPUID i = 0; i < pVM->cCpus; i++)
531	{
532	PVMCPU pVCpu = pVM->apCpusR3[i];
533	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlock, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlock", i);
534	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOnTime, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOnTime", i);
535	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOverslept, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOverslept", i);
536	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockInsomnia, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockInsomnia", i);
537	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExec, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec", i);
538	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromSpin, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromSpin", i);
539	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromBlock, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromBlock", i);
540	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0Halts, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryCounter", i);
541	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsSucceeded, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistorySucceeded", i);
542	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsToRing3, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryToRing3", i);
543	}
544	}
545
546
547	/**
548	* Worker for VMMR3InitR0 that calls ring-0 to do EMT specific initialization.
549	*
550	* @returns VBox status code.
551	* @param pVM The cross context VM structure.
552	* @param pVCpu The cross context per CPU structure.
553	* @thread EMT(pVCpu)
554	*/
555	static DECLCALLBACK(int) vmmR3InitR0Emt(PVM pVM, PVMCPU pVCpu)
556	{
557	return VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_VMMR0_INIT_EMT, 0, NULL);
558	}
559
560
561	/**
562	* Initializes the R0 VMM.
563	*
564	* @returns VBox status code.
565	* @param pVM The cross context VM structure.
566	*/
567	VMMR3_INT_DECL(int) VMMR3InitR0(PVM pVM)
568	{
569	int rc;
570	PVMCPU pVCpu = VMMGetCpu(pVM);
571	Assert(pVCpu && pVCpu->idCpu == 0);
572
573	#ifdef LOG_ENABLED
574	/*
575	* Initialize the ring-0 logger if we haven't done so yet.
576	*/
577	if ( pVCpu->vmm.s.pR0LoggerR3
578	&& !pVCpu->vmm.s.pR0LoggerR3->fCreated)
579	{
580	rc = VMMR3UpdateLoggers(pVM);
581	if (RT_FAILURE(rc))
582	return rc;
583	}
584	#endif
585
586	/*
587	* Call Ring-0 entry with init code.
588	*/
589	for (;;)
590	{
591	#ifdef NO_SUPCALLR0VMM
592	//rc = VERR_GENERAL_FAILURE;
593	rc = VINF_SUCCESS;
594	#else
595	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), 0 /idCpu/, VMMR0_DO_VMMR0_INIT, RT_MAKE_U64(VMMGetSvnRev(), vmmGetBuildType()), NULL);
596	#endif
597	/*
598	* Flush the logs.
599	*/
600	#ifdef LOG_ENABLED
601	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
602	#endif
603	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
604	if (rc != VINF_VMM_CALL_HOST)
605	break;
606	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
607	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
608	break;
609	/* Resume R0 */
610	}
611
612	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
613	{
614	LogRel(("VMM: R0 init failed, rc=%Rra\n", rc));
615	if (RT_SUCCESS(rc))
616	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
617	}
618
619	/* Log whether thread-context hooks are used (on Linux this can depend on how the kernel is configured). */
620	if (pVM->apCpusR3[0]->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
621	LogRel(("VMM: Enabled thread-context hooks\n"));
622	else
623	LogRel(("VMM: Thread-context hooks unavailable\n"));
624
625	/* Log RTThreadPreemptIsPendingTrusty() and RTThreadPreemptIsPossible() results. */
626	if (pVM->vmm.s.fIsPreemptPendingApiTrusty)
627	LogRel(("VMM: RTThreadPreemptIsPending() can be trusted\n"));
628	else
629	LogRel(("VMM: Warning! RTThreadPreemptIsPending() cannot be trusted! Need to update kernel info?\n"));
630	if (pVM->vmm.s.fIsPreemptPossible)
631	LogRel(("VMM: Kernel preemption is possible\n"));
632	else
633	LogRel(("VMM: Kernel preemption is not possible it seems\n"));
634
635	/*
636	* Send all EMTs to ring-0 to get their logger initialized.
637	*/
638	for (VMCPUID idCpu = 0; RT_SUCCESS(rc) && idCpu < pVM->cCpus; idCpu++)
639	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)vmmR3InitR0Emt, 2, pVM, pVM->apCpusR3[idCpu]);
640
641	return rc;
642	}
643
644
645	/**
646	* Called when an init phase completes.
647	*
648	* @returns VBox status code.
649	* @param pVM The cross context VM structure.
650	* @param enmWhat Which init phase.
651	*/
652	VMMR3_INT_DECL(int) VMMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
653	{
654	int rc = VINF_SUCCESS;
655
656	switch (enmWhat)
657	{
658	case VMINITCOMPLETED_RING3:
659	{
660	#if 0 /* pointless when timers doesn't run on EMT */
661	/*
662	* Create the EMT yield timer.
663	*/
664	rc = TMR3TimerCreate(pVM, TMCLOCK_REAL, vmmR3YieldEMT, NULL, TMTIMER_FLAGS_NO_RING0,
665	"EMT Yielder", &pVM->vmm.s.hYieldTimer);
666	AssertRCReturn(rc, rc);
667
668	rc = TMTimerSetMillies(pVM, pVM->vmm.s.hYieldTimer, pVM->vmm.s.cYieldEveryMillies);
669	AssertRCReturn(rc, rc);
670	#endif
671	break;
672	}
673
674	case VMINITCOMPLETED_HM:
675	{
676	/*
677	* Disable the periodic preemption timers if we can use the
678	* VMX-preemption timer instead.
679	*/
680	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
681	&& HMR3IsVmxPreemptionTimerUsed(pVM))
682	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
683	LogRel(("VMM: fUsePeriodicPreemptionTimers=%RTbool\n", pVM->vmm.s.fUsePeriodicPreemptionTimers));
684
685	/*
686	* Last chance for GIM to update its CPUID leaves if it requires
687	* knowledge/information from HM initialization.
688	*/
689	rc = GIMR3InitCompleted(pVM);
690	AssertRCReturn(rc, rc);
691
692	/*
693	* CPUM's post-initialization (print CPUIDs).
694	*/
695	CPUMR3LogCpuIdAndMsrFeatures(pVM);
696	break;
697	}
698
699	default: /* shuts up gcc */
700	break;
701	}
702
703	return rc;
704	}
705
706
707	/**
708	* Terminate the VMM bits.
709	*
710	* @returns VBox status code.
711	* @param pVM The cross context VM structure.
712	*/
713	VMMR3_INT_DECL(int) VMMR3Term(PVM pVM)
714	{
715	PVMCPU pVCpu = VMMGetCpu(pVM);
716	Assert(pVCpu && pVCpu->idCpu == 0);
717
718	/*
719	* Call Ring-0 entry with termination code.
720	*/
721	int rc;
722	for (;;)
723	{
724	#ifdef NO_SUPCALLR0VMM
725	//rc = VERR_GENERAL_FAILURE;
726	rc = VINF_SUCCESS;
727	#else
728	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), 0 /idCpu/, VMMR0_DO_VMMR0_TERM, 0, NULL);
729	#endif
730	/*
731	* Flush the logs.
732	*/
733	#ifdef LOG_ENABLED
734	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
735	#endif
736	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
737	if (rc != VINF_VMM_CALL_HOST)
738	break;
739	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
740	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
741	break;
742	/* Resume R0 */
743	}
744	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
745	{
746	LogRel(("VMM: VMMR3Term: R0 term failed, rc=%Rra. (warning)\n", rc));
747	if (RT_SUCCESS(rc))
748	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
749	}
750
751	for (VMCPUID i = 0; i < pVM->cCpus; i++)
752	{
753	RTSemEventDestroy(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
754	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
755	}
756	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
757	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
758	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
759	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
760	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousDone);
761	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
762	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousDoneCaller);
763	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
764	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
765	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
766	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
767	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
768	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
769	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
770	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
771	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
772
773	vmmTermFormatTypes();
774	return rc;
775	}
776
777
778	/**
779	* Applies relocations to data and code managed by this
780	* component. This function will be called at init and
781	* whenever the VMM need to relocate it self inside the GC.
782	*
783	* The VMM will need to apply relocations to the core code.
784	*
785	* @param pVM The cross context VM structure.
786	* @param offDelta The relocation delta.
787	*/
788	VMMR3_INT_DECL(void) VMMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
789	{
790	LogFlow(("VMMR3Relocate: offDelta=%RGv\n", offDelta));
791	RT_NOREF(offDelta);
792
793	/*
794	* Update the logger.
795	*/
796	VMMR3UpdateLoggers(pVM);
797	}
798
799
800	/**
801	* Updates the settings for the RC and R0 loggers.
802	*
803	* @returns VBox status code.
804	* @param pVM The cross context VM structure.
805	*/
806	VMMR3_INT_DECL(int) VMMR3UpdateLoggers(PVM pVM)
807	{
808	int rc = VINF_SUCCESS;
809
810	#ifdef LOG_ENABLED
811	/*
812	* For the ring-0 EMT logger, we use a per-thread logger instance
813	* in ring-0. Only initialize it once.
814	*/
815	PRTLOGGER const pDefault = RTLogDefaultInstance();
816	for (VMCPUID i = 0; i < pVM->cCpus; i++)
817	{
818	PVMCPU pVCpu = pVM->apCpusR3[i];
819	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
820	if (pR0LoggerR3)
821	{
822	if (!pR0LoggerR3->fCreated)
823	{
824	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
825	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
826	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
827
828	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
829	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
830	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
831
832	char szR0ThreadName[16];
833	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", i);
834	rc = RTLogCreateForR0(&pR0LoggerR3->Logger, pR0LoggerR3->cbLogger,
835	pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
836	pfnLoggerWrapper, pfnLoggerFlush,
837	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
838	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
839
840	pR0LoggerR3->idCpu = i;
841	pR0LoggerR3->fCreated = true;
842	pR0LoggerR3->fFlushingDisabled = false;
843	}
844
845	rc = RTLogCopyGroupsAndFlagsForR0(&pR0LoggerR3->Logger, pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
846	pDefault, RTLOGFLAGS_BUFFERED, UINT32_MAX);
847	AssertRC(rc);
848	}
849	}
850	#else
851	RT_NOREF(pVM);
852	#endif
853
854	return rc;
855	}
856
857
858	/**
859	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg1Weak output.
860	*
861	* @returns Pointer to the buffer.
862	* @param pVM The cross context VM structure.
863	*/
864	VMMR3DECL(const char *) VMMR3GetRZAssertMsg1(PVM pVM)
865	{
866	return pVM->vmm.s.szRing0AssertMsg1;
867	}
868
869
870	/**
871	* Returns the VMCPU of the specified virtual CPU.
872	*
873	* @returns The VMCPU pointer. NULL if @a idCpu or @a pUVM is invalid.
874	*
875	* @param pUVM The user mode VM handle.
876	* @param idCpu The ID of the virtual CPU.
877	*/
878	VMMR3DECL(PVMCPU) VMMR3GetCpuByIdU(PUVM pUVM, RTCPUID idCpu)
879	{
880	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
881	AssertReturn(idCpu < pUVM->cCpus, NULL);
882	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, NULL);
883	return pUVM->pVM->apCpusR3[idCpu];
884	}
885
886
887	/**
888	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg2Weak output.
889	*
890	* @returns Pointer to the buffer.
891	* @param pVM The cross context VM structure.
892	*/
893	VMMR3DECL(const char *) VMMR3GetRZAssertMsg2(PVM pVM)
894	{
895	return pVM->vmm.s.szRing0AssertMsg2;
896	}
897
898
899	/**
900	* Execute state save operation.
901	*
902	* @returns VBox status code.
903	* @param pVM The cross context VM structure.
904	* @param pSSM SSM operation handle.
905	*/
906	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM)
907	{
908	LogFlow(("vmmR3Save:\n"));
909
910	/*
911	* Save the started/stopped state of all CPUs except 0 as it will always
912	* be running. This avoids breaking the saved state version. :-)
913	*/
914	for (VMCPUID i = 1; i < pVM->cCpus; i++)
915	SSMR3PutBool(pSSM, VMCPUSTATE_IS_STARTED(VMCPU_GET_STATE(pVM->apCpusR3[i])));
916
917	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
918	}
919
920
921	/**
922	* Execute state load operation.
923	*
924	* @returns VBox status code.
925	* @param pVM The cross context VM structure.
926	* @param pSSM SSM operation handle.
927	* @param uVersion Data layout version.
928	* @param uPass The data pass.
929	*/
930	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
931	{
932	LogFlow(("vmmR3Load:\n"));
933	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
934
935	/*
936	* Validate version.
937	*/
938	if ( uVersion != VMM_SAVED_STATE_VERSION
939	&& uVersion != VMM_SAVED_STATE_VERSION_3_0)
940	{
941	AssertMsgFailed(("vmmR3Load: Invalid version uVersion=%u!\n", uVersion));
942	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
943	}
944
945	if (uVersion <= VMM_SAVED_STATE_VERSION_3_0)
946	{
947	/* Ignore the stack bottom, stack pointer and stack bits. */
948	RTRCPTR RCPtrIgnored;
949	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
950	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
951	#ifdef RT_OS_DARWIN
952	if ( SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(3,0,0)
953	&& SSMR3HandleVersion(pSSM) < VBOX_FULL_VERSION_MAKE(3,1,0)
954	&& SSMR3HandleRevision(pSSM) >= 48858
955	&& ( !strcmp(SSMR3HandleHostOSAndArch(pSSM), "darwin.x86")
956	\|\| !strcmp(SSMR3HandleHostOSAndArch(pSSM), "") )
957	)
958	SSMR3Skip(pSSM, 16384);
959	else
960	SSMR3Skip(pSSM, 8192);
961	#else
962	SSMR3Skip(pSSM, 8192);
963	#endif
964	}
965
966	/*
967	* Restore the VMCPU states. VCPU 0 is always started.
968	*/
969	VMCPU_SET_STATE(pVM->apCpusR3[0], VMCPUSTATE_STARTED);
970	for (VMCPUID i = 1; i < pVM->cCpus; i++)
971	{
972	bool fStarted;
973	int rc = SSMR3GetBool(pSSM, &fStarted);
974	if (RT_FAILURE(rc))
975	return rc;
976	VMCPU_SET_STATE(pVM->apCpusR3[i], fStarted ? VMCPUSTATE_STARTED : VMCPUSTATE_STOPPED);
977	}
978
979	/* terminator */
980	uint32_t u32;
981	int rc = SSMR3GetU32(pSSM, &u32);
982	if (RT_FAILURE(rc))
983	return rc;
984	if (u32 != UINT32_MAX)
985	{
986	AssertMsgFailed(("u32=%#x\n", u32));
987	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
988	}
989	return VINF_SUCCESS;
990	}
991
992
993	/**
994	* Suspends the CPU yielder.
995	*
996	* @param pVM The cross context VM structure.
997	*/
998	VMMR3_INT_DECL(void) VMMR3YieldSuspend(PVM pVM)
999	{
1000	#if 0 /* pointless when timers doesn't run on EMT */
1001	VMCPU_ASSERT_EMT(pVM->apCpusR3[0]);
1002	if (!pVM->vmm.s.cYieldResumeMillies)
1003	{
1004	uint64_t u64Now = TMTimerGet(pVM, pVM->vmm.s.hYieldTimer);
1005	uint64_t u64Expire = TMTimerGetExpire(pVM, pVM->vmm.s.hYieldTimer);
1006	if (u64Now >= u64Expire \|\| u64Expire == ~(uint64_t)0)
1007	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1008	else
1009	pVM->vmm.s.cYieldResumeMillies = TMTimerToMilli(pVM, pVM->vmm.s.hYieldTimer, u64Expire - u64Now);
1010	TMTimerStop(pVM, pVM->vmm.s.hYieldTimer);
1011	}
1012	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1013	#else
1014	RT_NOREF(pVM);
1015	#endif
1016	}
1017
1018
1019	/**
1020	* Stops the CPU yielder.
1021	*
1022	* @param pVM The cross context VM structure.
1023	*/
1024	VMMR3_INT_DECL(void) VMMR3YieldStop(PVM pVM)
1025	{
1026	#if 0 /* pointless when timers doesn't run on EMT */
1027	if (!pVM->vmm.s.cYieldResumeMillies)
1028	TMTimerStop(pVM, pVM->vmm.s.hYieldTimer);
1029	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1030	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1031	#else
1032	RT_NOREF(pVM);
1033	#endif
1034	}
1035
1036
1037	/**
1038	* Resumes the CPU yielder when it has been a suspended or stopped.
1039	*
1040	* @param pVM The cross context VM structure.
1041	*/
1042	VMMR3_INT_DECL(void) VMMR3YieldResume(PVM pVM)
1043	{
1044	#if 0 /* pointless when timers doesn't run on EMT */
1045	if (pVM->vmm.s.cYieldResumeMillies)
1046	{
1047	TMTimerSetMillies(pVM, pVM->vmm.s.hYieldTimer, pVM->vmm.s.cYieldResumeMillies);
1048	pVM->vmm.s.cYieldResumeMillies = 0;
1049	}
1050	#else
1051	RT_NOREF(pVM);
1052	#endif
1053	}
1054
1055
1056	#if 0 /* pointless when timers doesn't run on EMT */
1057	/**
1058	* @callback_method_impl{FNTMTIMERINT, EMT yielder}
1059	*
1060	* @todo This is a UNI core/thread thing, really... Should be reconsidered.
1061	*/
1062	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, TMTIMERHANDLE hTimer, void *pvUser)
1063	{
1064	NOREF(pvUser);
1065
1066	/*
1067	* This really needs some careful tuning. While we shouldn't be too greedy since
1068	* that'll cause the rest of the system to stop up, we shouldn't be too nice either
1069	* because that'll cause us to stop up.
1070	*
1071	* The current logic is to use the default interval when there is no lag worth
1072	* mentioning, but when we start accumulating lag we don't bother yielding at all.
1073	*
1074	* (This depends on the TMCLOCK_VIRTUAL_SYNC to be scheduled before TMCLOCK_REAL
1075	* so the lag is up to date.)
1076	*/
1077	const uint64_t u64Lag = TMVirtualSyncGetLag(pVM);
1078	if ( u64Lag < 50000000 /* 50ms */
1079	\|\| ( u64Lag < 1000000000 /* 1s */
1080	&& RTTimeNanoTS() - pVM->vmm.s.u64LastYield < 500000000 /* 500 ms */)
1081	)
1082	{
1083	uint64_t u64Elapsed = RTTimeNanoTS();
1084	pVM->vmm.s.u64LastYield = u64Elapsed;
1085
1086	RTThreadYield();
1087
1088	#ifdef LOG_ENABLED
1089	u64Elapsed = RTTimeNanoTS() - u64Elapsed;
1090	Log(("vmmR3YieldEMT: %RI64 ns\n", u64Elapsed));
1091	#endif
1092	}
1093	TMTimerSetMillies(pVM, hTimer, pVM->vmm.s.cYieldEveryMillies);
1094	}
1095	#endif
1096
1097
1098	/**
1099	* Executes guest code (Intel VT-x and AMD-V).
1100	*
1101	* @param pVM The cross context VM structure.
1102	* @param pVCpu The cross context virtual CPU structure.
1103	*/
1104	VMMR3_INT_DECL(int) VMMR3HmRunGC(PVM pVM, PVMCPU pVCpu)
1105	{
1106	Log2(("VMMR3HmRunGC: (cs:rip=%04x:%RX64)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1107
1108	for (;;)
1109	{
1110	int rc;
1111	do
1112	{
1113	#ifdef NO_SUPCALLR0VMM
1114	rc = VERR_GENERAL_FAILURE;
1115	#else
1116	rc = SUPR3CallVMMR0Fast(VMCC_GET_VMR0_FOR_CALL(pVM), VMMR0_DO_HM_RUN, pVCpu->idCpu);
1117	if (RT_LIKELY(rc == VINF_SUCCESS))
1118	rc = pVCpu->vmm.s.iLastGZRc;
1119	#endif
1120	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
1121
1122	#if 0 /** @todo triggers too often */
1123	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TO_R3));
1124	#endif
1125
1126	/*
1127	* Flush the logs
1128	*/
1129	#ifdef LOG_ENABLED
1130	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1131	#endif
1132	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1133	if (rc != VINF_VMM_CALL_HOST)
1134	{
1135	Log2(("VMMR3HmRunGC: returns %Rrc (cs:rip=%04x:%RX64)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1136	return rc;
1137	}
1138	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1139	if (RT_FAILURE(rc))
1140	return rc;
1141	/* Resume R0 */
1142	}
1143	}
1144
1145
1146	/**
1147	* Perform one of the fast I/O control VMMR0 operation.
1148	*
1149	* @returns VBox strict status code.
1150	* @param pVM The cross context VM structure.
1151	* @param pVCpu The cross context virtual CPU structure.
1152	* @param enmOperation The operation to perform.
1153	*/
1154	VMMR3_INT_DECL(VBOXSTRICTRC) VMMR3CallR0EmtFast(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation)
1155	{
1156	for (;;)
1157	{
1158	VBOXSTRICTRC rcStrict;
1159	do
1160	{
1161	#ifdef NO_SUPCALLR0VMM
1162	rcStrict = VERR_GENERAL_FAILURE;
1163	#else
1164	rcStrict = SUPR3CallVMMR0Fast(VMCC_GET_VMR0_FOR_CALL(pVM), enmOperation, pVCpu->idCpu);
1165	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
1166	rcStrict = pVCpu->vmm.s.iLastGZRc;
1167	#endif
1168	} while (rcStrict == VINF_EM_RAW_INTERRUPT_HYPER);
1169
1170	/*
1171	* Flush the logs
1172	*/
1173	#ifdef LOG_ENABLED
1174	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1175	#endif
1176	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1177	if (rcStrict != VINF_VMM_CALL_HOST)
1178	return rcStrict;
1179	int rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1180	if (RT_FAILURE(rc))
1181	return rc;
1182	/* Resume R0 */
1183	}
1184	}
1185
1186
1187	/**
1188	* VCPU worker for VMMR3SendStartupIpi.
1189	*
1190	* @param pVM The cross context VM structure.
1191	* @param idCpu Virtual CPU to perform SIPI on.
1192	* @param uVector The SIPI vector.
1193	*/
1194	static DECLCALLBACK(int) vmmR3SendStarupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1195	{
1196	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1197	VMCPU_ASSERT_EMT(pVCpu);
1198
1199	/*
1200	* In the INIT state, the target CPU is only responsive to an SIPI.
1201	* This is also true for when when the CPU is in VMX non-root mode.
1202	*
1203	* See AMD spec. 16.5 "Interprocessor Interrupts (IPI)".
1204	* See Intel spec. 26.6.2 "Activity State".
1205	*/
1206	if (EMGetState(pVCpu) != EMSTATE_WAIT_SIPI)
1207	return VINF_SUCCESS;
1208
1209	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1210	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1211	if (CPUMIsGuestInVmxRootMode(pCtx))
1212	{
1213	/* If the CPU is in VMX non-root mode we must cause a VM-exit. */
1214	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1215	return VBOXSTRICTRC_TODO(IEMExecVmxVmexitStartupIpi(pVCpu, uVector));
1216
1217	/* If the CPU is in VMX root mode (and not in VMX non-root mode) SIPIs are blocked. */
1218	return VINF_SUCCESS;
1219	}
1220	#endif
1221
1222	pCtx->cs.Sel = uVector << 8;
1223	pCtx->cs.ValidSel = uVector << 8;
1224	pCtx->cs.fFlags = CPUMSELREG_FLAGS_VALID;
1225	pCtx->cs.u64Base = uVector << 12;
1226	pCtx->cs.u32Limit = UINT32_C(0x0000ffff);
1227	pCtx->rip = 0;
1228
1229	Log(("vmmR3SendSipi for VCPU %d with vector %x\n", idCpu, uVector));
1230
1231	# if 1 /* If we keep the EMSTATE_WAIT_SIPI method, then move this to EM.cpp. */
1232	EMSetState(pVCpu, EMSTATE_HALTED);
1233	return VINF_EM_RESCHEDULE;
1234	# else /* And if we go the VMCPU::enmState way it can stay here. */
1235	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STOPPED);
1236	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1237	return VINF_SUCCESS;
1238	# endif
1239	}
1240
1241
1242	/**
1243	* VCPU worker for VMMR3SendInitIpi.
1244	*
1245	* @returns VBox status code.
1246	* @param pVM The cross context VM structure.
1247	* @param idCpu Virtual CPU to perform SIPI on.
1248	*/
1249	static DECLCALLBACK(int) vmmR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1250	{
1251	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1252	VMCPU_ASSERT_EMT(pVCpu);
1253
1254	Log(("vmmR3SendInitIpi for VCPU %d\n", idCpu));
1255
1256	/** @todo r=ramshankar: We should probably block INIT signal when the CPU is in
1257	* wait-for-SIPI state. Verify. */
1258
1259	/* If the CPU is in VMX non-root mode, INIT signals cause VM-exits. */
1260	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1261	PCCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1262	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1263	return VBOXSTRICTRC_TODO(IEMExecVmxVmexit(pVCpu, VMX_EXIT_INIT_SIGNAL, 0 /* uExitQual */));
1264	#endif
1265
1266	/** @todo Figure out how to handle a SVM nested-guest intercepts here for INIT
1267	* IPI (e.g. SVM_EXIT_INIT). */
1268
1269	PGMR3ResetCpu(pVM, pVCpu);
1270	PDMR3ResetCpu(pVCpu); /* Only clears pending interrupts force flags */
1271	APICR3InitIpi(pVCpu);
1272	TRPMR3ResetCpu(pVCpu);
1273	CPUMR3ResetCpu(pVM, pVCpu);
1274	EMR3ResetCpu(pVCpu);
1275	HMR3ResetCpu(pVCpu);
1276	NEMR3ResetCpu(pVCpu, true /fInitIpi/);
1277
1278	/* This will trickle up on the target EMT. */
1279	return VINF_EM_WAIT_SIPI;
1280	}
1281
1282
1283	/**
1284	* Sends a Startup IPI to the virtual CPU by setting CS:EIP into
1285	* vector-dependent state and unhalting processor.
1286	*
1287	* @param pVM The cross context VM structure.
1288	* @param idCpu Virtual CPU to perform SIPI on.
1289	* @param uVector SIPI vector.
1290	*/
1291	VMMR3_INT_DECL(void) VMMR3SendStartupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1292	{
1293	AssertReturnVoid(idCpu < pVM->cCpus);
1294
1295	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendStarupIpi, 3, pVM, idCpu, uVector);
1296	AssertRC(rc);
1297	}
1298
1299
1300	/**
1301	* Sends init IPI to the virtual CPU.
1302	*
1303	* @param pVM The cross context VM structure.
1304	* @param idCpu Virtual CPU to perform int IPI on.
1305	*/
1306	VMMR3_INT_DECL(void) VMMR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1307	{
1308	AssertReturnVoid(idCpu < pVM->cCpus);
1309
1310	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendInitIpi, 2, pVM, idCpu);
1311	AssertRC(rc);
1312	}
1313
1314
1315	/**
1316	* Registers the guest memory range that can be used for patching.
1317	*
1318	* @returns VBox status code.
1319	* @param pVM The cross context VM structure.
1320	* @param pPatchMem Patch memory range.
1321	* @param cbPatchMem Size of the memory range.
1322	*/
1323	VMMR3DECL(int) VMMR3RegisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1324	{
1325	VM_ASSERT_EMT(pVM);
1326	if (HMIsEnabled(pVM))
1327	return HMR3EnablePatching(pVM, pPatchMem, cbPatchMem);
1328
1329	return VERR_NOT_SUPPORTED;
1330	}
1331
1332
1333	/**
1334	* Deregisters the guest memory range that can be used for patching.
1335	*
1336	* @returns VBox status code.
1337	* @param pVM The cross context VM structure.
1338	* @param pPatchMem Patch memory range.
1339	* @param cbPatchMem Size of the memory range.
1340	*/
1341	VMMR3DECL(int) VMMR3DeregisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1342	{
1343	if (HMIsEnabled(pVM))
1344	return HMR3DisablePatching(pVM, pPatchMem, cbPatchMem);
1345
1346	return VINF_SUCCESS;
1347	}
1348
1349
1350	/**
1351	* Common recursion handler for the other EMTs.
1352	*
1353	* @returns Strict VBox status code.
1354	* @param pVM The cross context VM structure.
1355	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1356	* @param rcStrict Current status code to be combined with the one
1357	* from this recursion and returned.
1358	*/
1359	static VBOXSTRICTRC vmmR3EmtRendezvousCommonRecursion(PVM pVM, PVMCPU pVCpu, VBOXSTRICTRC rcStrict)
1360	{
1361	int rc2;
1362
1363	/*
1364	* We wait here while the initiator of this recursion reconfigures
1365	* everything. The last EMT to get in signals the initiator.
1366	*/
1367	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) == pVM->cCpus)
1368	{
1369	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1370	AssertLogRelRC(rc2);
1371	}
1372
1373	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPush, RT_INDEFINITE_WAIT);
1374	AssertLogRelRC(rc2);
1375
1376	/*
1377	* Do the normal rendezvous processing.
1378	*/
1379	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1380	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1381
1382	/*
1383	* Wait for the initiator to restore everything.
1384	*/
1385	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPop, RT_INDEFINITE_WAIT);
1386	AssertLogRelRC(rc2);
1387
1388	/*
1389	* Last thread out of here signals the initiator.
1390	*/
1391	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) == pVM->cCpus)
1392	{
1393	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1394	AssertLogRelRC(rc2);
1395	}
1396
1397	/*
1398	* Merge status codes and return.
1399	*/
1400	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
1401	if ( rcStrict2 != VINF_SUCCESS
1402	&& ( rcStrict == VINF_SUCCESS
1403	\|\| rcStrict > rcStrict2))
1404	rcStrict = rcStrict2;
1405	return rcStrict;
1406	}
1407
1408
1409	/**
1410	* Count returns and have the last non-caller EMT wake up the caller.
1411	*
1412	* @returns VBox strict informational status code for EM scheduling. No failures
1413	* will be returned here, those are for the caller only.
1414	*
1415	* @param pVM The cross context VM structure.
1416	* @param rcStrict The current accumulated recursive status code,
1417	* to be merged with i32RendezvousStatus and
1418	* returned.
1419	*/
1420	DECL_FORCE_INLINE(VBOXSTRICTRC) vmmR3EmtRendezvousNonCallerReturn(PVM pVM, VBOXSTRICTRC rcStrict)
1421	{
1422	VBOXSTRICTRC rcStrict2 = ASMAtomicReadS32(&pVM->vmm.s.i32RendezvousStatus);
1423
1424	uint32_t cReturned = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsReturned);
1425	if (cReturned == pVM->cCpus - 1U)
1426	{
1427	int rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1428	AssertLogRelRC(rc);
1429	}
1430
1431	/*
1432	* Merge the status codes, ignoring error statuses in this code path.
1433	*/
1434	AssertLogRelMsgReturn( rcStrict2 <= VINF_SUCCESS
1435	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1436	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)),
1437	VERR_IPE_UNEXPECTED_INFO_STATUS);
1438
1439	if (RT_SUCCESS(rcStrict2))
1440	{
1441	if ( rcStrict2 != VINF_SUCCESS
1442	&& ( rcStrict == VINF_SUCCESS
1443	\|\| rcStrict > rcStrict2))
1444	rcStrict = rcStrict2;
1445	}
1446	return rcStrict;
1447	}
1448
1449
1450	/**
1451	* Common worker for VMMR3EmtRendezvous and VMMR3EmtRendezvousFF.
1452	*
1453	* @returns VBox strict informational status code for EM scheduling. No failures
1454	* will be returned here, those are for the caller only. When
1455	* fIsCaller is set, VINF_SUCCESS is always returned.
1456	*
1457	* @param pVM The cross context VM structure.
1458	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1459	* @param fIsCaller Whether we're the VMMR3EmtRendezvous caller or
1460	* not.
1461	* @param fFlags The flags.
1462	* @param pfnRendezvous The callback.
1463	* @param pvUser The user argument for the callback.
1464	*/
1465	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
1466	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1467	{
1468	int rc;
1469	VBOXSTRICTRC rcStrictRecursion = VINF_SUCCESS;
1470
1471	/*
1472	* Enter, the last EMT triggers the next callback phase.
1473	*/
1474	uint32_t cEntered = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsEntered);
1475	if (cEntered != pVM->cCpus)
1476	{
1477	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1478	{
1479	/* Wait for our turn. */
1480	for (;;)
1481	{
1482	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, RT_INDEFINITE_WAIT);
1483	AssertLogRelRC(rc);
1484	if (!pVM->vmm.s.fRendezvousRecursion)
1485	break;
1486	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1487	}
1488	}
1489	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1490	{
1491	/* Wait for the last EMT to arrive and wake everyone up. */
1492	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce, RT_INDEFINITE_WAIT);
1493	AssertLogRelRC(rc);
1494	Assert(!pVM->vmm.s.fRendezvousRecursion);
1495	}
1496	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1497	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1498	{
1499	/* Wait for our turn. */
1500	for (;;)
1501	{
1502	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1503	AssertLogRelRC(rc);
1504	if (!pVM->vmm.s.fRendezvousRecursion)
1505	break;
1506	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1507	}
1508	}
1509	else
1510	{
1511	Assert((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE);
1512
1513	/*
1514	* The execute once is handled specially to optimize the code flow.
1515	*
1516	* The last EMT to arrive will perform the callback and the other
1517	* EMTs will wait on the Done/DoneCaller semaphores (instead of
1518	* the EnterOneByOne/AllAtOnce) in the meanwhile. When the callback
1519	* returns, that EMT will initiate the normal return sequence.
1520	*/
1521	if (!fIsCaller)
1522	{
1523	for (;;)
1524	{
1525	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1526	AssertLogRelRC(rc);
1527	if (!pVM->vmm.s.fRendezvousRecursion)
1528	break;
1529	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1530	}
1531
1532	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1533	}
1534	return VINF_SUCCESS;
1535	}
1536	}
1537	else
1538	{
1539	/*
1540	* All EMTs are waiting, clear the FF and take action according to the
1541	* execution method.
1542	*/
1543	VM_FF_CLEAR(pVM, VM_FF_EMT_RENDEZVOUS);
1544
1545	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1546	{
1547	/* Wake up everyone. */
1548	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
1549	AssertLogRelRC(rc);
1550	}
1551	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1552	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1553	{
1554	/* Figure out who to wake up and wake it up. If it's ourself, then
1555	it's easy otherwise wait for our turn. */
1556	VMCPUID iFirst = (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1557	? 0
1558	: pVM->cCpus - 1U;
1559	if (pVCpu->idCpu != iFirst)
1560	{
1561	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iFirst]);
1562	AssertLogRelRC(rc);
1563	for (;;)
1564	{
1565	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1566	AssertLogRelRC(rc);
1567	if (!pVM->vmm.s.fRendezvousRecursion)
1568	break;
1569	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1570	}
1571	}
1572	}
1573	/* else: execute the handler on the current EMT and wake up one or more threads afterwards. */
1574	}
1575
1576
1577	/*
1578	* Do the callback and update the status if necessary.
1579	*/
1580	if ( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1581	\|\| RT_SUCCESS(ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus)) )
1582	{
1583	VBOXSTRICTRC rcStrict2 = pfnRendezvous(pVM, pVCpu, pvUser);
1584	if (rcStrict2 != VINF_SUCCESS)
1585	{
1586	AssertLogRelMsg( rcStrict2 <= VINF_SUCCESS
1587	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1588	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)));
1589	int32_t i32RendezvousStatus;
1590	do
1591	{
1592	i32RendezvousStatus = ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus);
1593	if ( rcStrict2 == i32RendezvousStatus
1594	\|\| RT_FAILURE(i32RendezvousStatus)
1595	\|\| ( i32RendezvousStatus != VINF_SUCCESS
1596	&& rcStrict2 > i32RendezvousStatus))
1597	break;
1598	} while (!ASMAtomicCmpXchgS32(&pVM->vmm.s.i32RendezvousStatus, VBOXSTRICTRC_VAL(rcStrict2), i32RendezvousStatus));
1599	}
1600	}
1601
1602	/*
1603	* Increment the done counter and take action depending on whether we're
1604	* the last to finish callback execution.
1605	*/
1606	uint32_t cDone = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsDone);
1607	if ( cDone != pVM->cCpus
1608	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE)
1609	{
1610	/* Signal the next EMT? */
1611	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1612	{
1613	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1614	AssertLogRelRC(rc);
1615	}
1616	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1617	{
1618	Assert(cDone == pVCpu->idCpu + 1U);
1619	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu + 1U]);
1620	AssertLogRelRC(rc);
1621	}
1622	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1623	{
1624	Assert(pVM->cCpus - cDone == pVCpu->idCpu);
1625	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVM->cCpus - cDone - 1U]);
1626	AssertLogRelRC(rc);
1627	}
1628
1629	/* Wait for the rest to finish (the caller waits on hEvtRendezvousDoneCaller). */
1630	if (!fIsCaller)
1631	{
1632	for (;;)
1633	{
1634	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1635	AssertLogRelRC(rc);
1636	if (!pVM->vmm.s.fRendezvousRecursion)
1637	break;
1638	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1639	}
1640	}
1641	}
1642	else
1643	{
1644	/* Callback execution is all done, tell the rest to return. */
1645	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1646	AssertLogRelRC(rc);
1647	}
1648
1649	if (!fIsCaller)
1650	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1651	return rcStrictRecursion;
1652	}
1653
1654
1655	/**
1656	* Called in response to VM_FF_EMT_RENDEZVOUS.
1657	*
1658	* @returns VBox strict status code - EM scheduling. No errors will be returned
1659	* here, nor will any non-EM scheduling status codes be returned.
1660	*
1661	* @param pVM The cross context VM structure.
1662	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1663	*
1664	* @thread EMT
1665	*/
1666	VMMR3_INT_DECL(int) VMMR3EmtRendezvousFF(PVM pVM, PVMCPU pVCpu)
1667	{
1668	Assert(!pVCpu->vmm.s.fInRendezvous);
1669	Log(("VMMR3EmtRendezvousFF: EMT%#u\n", pVCpu->idCpu));
1670	pVCpu->vmm.s.fInRendezvous = true;
1671	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1672	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1673	pVCpu->vmm.s.fInRendezvous = false;
1674	Log(("VMMR3EmtRendezvousFF: EMT%#u returns %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
1675	return VBOXSTRICTRC_TODO(rcStrict);
1676	}
1677
1678
1679	/**
1680	* Helper for resetting an single wakeup event sempahore.
1681	*
1682	* @returns VERR_TIMEOUT on success, RTSemEventWait status otherwise.
1683	* @param hEvt The event semaphore to reset.
1684	*/
1685	static int vmmR3HlpResetEvent(RTSEMEVENT hEvt)
1686	{
1687	for (uint32_t cLoops = 0; ; cLoops++)
1688	{
1689	int rc = RTSemEventWait(hEvt, 0 /cMsTimeout/);
1690	if (rc != VINF_SUCCESS \|\| cLoops > _4K)
1691	return rc;
1692	}
1693	}
1694
1695
1696	/**
1697	* Worker for VMMR3EmtRendezvous that handles recursion.
1698	*
1699	* @returns VBox strict status code. This will be the first error,
1700	* VINF_SUCCESS, or an EM scheduling status code.
1701	*
1702	* @param pVM The cross context VM structure.
1703	* @param pVCpu The cross context virtual CPU structure of the
1704	* calling EMT.
1705	* @param fFlags Flags indicating execution methods. See
1706	* grp_VMMR3EmtRendezvous_fFlags.
1707	* @param pfnRendezvous The callback.
1708	* @param pvUser User argument for the callback.
1709	*
1710	* @thread EMT(pVCpu)
1711	*/
1712	static VBOXSTRICTRC vmmR3EmtRendezvousRecursive(PVM pVM, PVMCPU pVCpu, uint32_t fFlags,
1713	PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1714	{
1715	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d\n", fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions));
1716	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1717	Assert(pVCpu->vmm.s.fInRendezvous);
1718
1719	/*
1720	* Save the current state.
1721	*/
1722	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1723	uint32_t const cParentDone = pVM->vmm.s.cRendezvousEmtsDone;
1724	int32_t const iParentStatus = pVM->vmm.s.i32RendezvousStatus;
1725	PFNVMMEMTRENDEZVOUS const pfnParent = pVM->vmm.s.pfnRendezvous;
1726	void * const pvParentUser = pVM->vmm.s.pvRendezvousUser;
1727
1728	/*
1729	* Check preconditions and save the current state.
1730	*/
1731	AssertReturn( (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1732	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1733	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1734	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1735	VERR_INTERNAL_ERROR);
1736	AssertReturn(pVM->vmm.s.cRendezvousEmtsEntered == pVM->cCpus, VERR_INTERNAL_ERROR_2);
1737	AssertReturn(pVM->vmm.s.cRendezvousEmtsReturned == 0, VERR_INTERNAL_ERROR_3);
1738
1739	/*
1740	* Reset the recursion prep and pop semaphores.
1741	*/
1742	int rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1743	AssertLogRelRCReturn(rc, rc);
1744	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1745	AssertLogRelRCReturn(rc, rc);
1746	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1747	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1748	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1749	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1750
1751	/*
1752	* Usher the other thread into the recursion routine.
1753	*/
1754	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush, 0);
1755	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, true);
1756
1757	uint32_t cLeft = pVM->cCpus - (cParentDone + 1U);
1758	if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1759	while (cLeft-- > 0)
1760	{
1761	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1762	AssertLogRelRC(rc);
1763	}
1764	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1765	{
1766	Assert(cLeft == pVM->cCpus - (pVCpu->idCpu + 1U));
1767	for (VMCPUID iCpu = pVCpu->idCpu + 1U; iCpu < pVM->cCpus; iCpu++)
1768	{
1769	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu]);
1770	AssertLogRelRC(rc);
1771	}
1772	}
1773	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1774	{
1775	Assert(cLeft == pVCpu->idCpu);
1776	for (VMCPUID iCpu = pVCpu->idCpu; iCpu > 0; iCpu--)
1777	{
1778	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu - 1U]);
1779	AssertLogRelRC(rc);
1780	}
1781	}
1782	else
1783	AssertLogRelReturn((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1784	VERR_INTERNAL_ERROR_4);
1785
1786	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1787	AssertLogRelRC(rc);
1788	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1789	AssertLogRelRC(rc);
1790
1791
1792	/*
1793	* Wait for the EMTs to wake up and get out of the parent rendezvous code.
1794	*/
1795	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) != pVM->cCpus)
1796	{
1797	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPushCaller, RT_INDEFINITE_WAIT);
1798	AssertLogRelRC(rc);
1799	}
1800
1801	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, false);
1802
1803	/*
1804	* Clear the slate and setup the new rendezvous.
1805	*/
1806	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1807	{
1808	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1809	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1810	}
1811	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1812	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1813	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1814	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1815
1816	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
1817	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
1818	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1819	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
1820	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
1821	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
1822	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
1823	ASMAtomicIncU32(&pVM->vmm.s.cRendezvousRecursions);
1824
1825	/*
1826	* We're ready to go now, do normal rendezvous processing.
1827	*/
1828	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1829	AssertLogRelRC(rc);
1830
1831	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /fIsCaller/, fFlags, pfnRendezvous, pvUser);
1832
1833	/*
1834	* The caller waits for the other EMTs to be done, return and waiting on the
1835	* pop semaphore.
1836	*/
1837	for (;;)
1838	{
1839	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
1840	AssertLogRelRC(rc);
1841	if (!pVM->vmm.s.fRendezvousRecursion)
1842	break;
1843	rcStrict = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict);
1844	}
1845
1846	/*
1847	* Get the return code and merge it with the above recursion status.
1848	*/
1849	VBOXSTRICTRC rcStrict2 = pVM->vmm.s.i32RendezvousStatus;
1850	if ( rcStrict2 != VINF_SUCCESS
1851	&& ( rcStrict == VINF_SUCCESS
1852	\|\| rcStrict > rcStrict2))
1853	rcStrict = rcStrict2;
1854
1855	/*
1856	* Restore the parent rendezvous state.
1857	*/
1858	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1859	{
1860	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1861	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1862	}
1863	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1864	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1865	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1866	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1867
1868	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, pVM->cCpus);
1869	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1870	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, cParentDone);
1871	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, iParentStatus);
1872	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fParentFlags);
1873	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvParentUser);
1874	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnParent);
1875
1876	/*
1877	* Usher the other EMTs back to their parent recursion routine, waiting
1878	* for them to all get there before we return (makes sure they've been
1879	* scheduled and are past the pop event sem, see below).
1880	*/
1881	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop, 0);
1882	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1883	AssertLogRelRC(rc);
1884
1885	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) != pVM->cCpus)
1886	{
1887	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPopCaller, RT_INDEFINITE_WAIT);
1888	AssertLogRelRC(rc);
1889	}
1890
1891	/*
1892	* We must reset the pop semaphore on the way out (doing the pop caller too,
1893	* just in case). The parent may be another recursion.
1894	*/
1895	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop); AssertLogRelRC(rc);
1896	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1897
1898	ASMAtomicDecU32(&pVM->vmm.s.cRendezvousRecursions);
1899
1900	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d returns %Rrc\n",
1901	fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions, VBOXSTRICTRC_VAL(rcStrict)));
1902	return rcStrict;
1903	}
1904
1905
1906	/**
1907	* EMT rendezvous.
1908	*
1909	* Gathers all the EMTs and execute some code on each of them, either in a one
1910	* by one fashion or all at once.
1911	*
1912	* @returns VBox strict status code. This will be the first error,
1913	* VINF_SUCCESS, or an EM scheduling status code.
1914	*
1915	* @retval VERR_DEADLOCK if recursion is attempted using a rendezvous type that
1916	* doesn't support it or if the recursion is too deep.
1917	*
1918	* @param pVM The cross context VM structure.
1919	* @param fFlags Flags indicating execution methods. See
1920	* grp_VMMR3EmtRendezvous_fFlags. The one-by-one,
1921	* descending and ascending rendezvous types support
1922	* recursion from inside @a pfnRendezvous.
1923	* @param pfnRendezvous The callback.
1924	* @param pvUser User argument for the callback.
1925	*
1926	* @thread Any.
1927	*/
1928	VMMR3DECL(int) VMMR3EmtRendezvous(PVM pVM, uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1929	{
1930	/*
1931	* Validate input.
1932	*/
1933	AssertReturn(pVM, VERR_INVALID_VM_HANDLE);
1934	AssertMsg( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_INVALID
1935	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) <= VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1936	&& !(fFlags & ~VMMEMTRENDEZVOUS_FLAGS_VALID_MASK), ("%#x\n", fFlags));
1937	AssertMsg( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1938	\|\| ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE
1939	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE),
1940	("type %u\n", fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK));
1941
1942	VBOXSTRICTRC rcStrict;
1943	PVMCPU pVCpu = VMMGetCpu(pVM);
1944	if (!pVCpu)
1945	{
1946	/*
1947	* Forward the request to an EMT thread.
1948	*/
1949	Log(("VMMR3EmtRendezvous: %#x non-EMT\n", fFlags));
1950	if (!(fFlags & VMMEMTRENDEZVOUS_FLAGS_PRIORITY))
1951	rcStrict = VMR3ReqCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1952	else
1953	rcStrict = VMR3ReqPriorityCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1954	Log(("VMMR3EmtRendezvous: %#x non-EMT returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1955	}
1956	else if ( pVM->cCpus == 1
1957	\|\| ( pVM->enmVMState == VMSTATE_DESTROYING
1958	&& VMR3GetActiveEmts(pVM->pUVM) < pVM->cCpus ) )
1959	{
1960	/*
1961	* Shortcut for the single EMT case.
1962	*
1963	* We also ends up here if EMT(0) (or others) tries to issue a rendezvous
1964	* during vmR3Destroy after other emulation threads have started terminating.
1965	*/
1966	if (!pVCpu->vmm.s.fInRendezvous)
1967	{
1968	Log(("VMMR3EmtRendezvous: %#x EMT (uni)\n", fFlags));
1969	pVCpu->vmm.s.fInRendezvous = true;
1970	pVM->vmm.s.fRendezvousFlags = fFlags;
1971	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1972	pVCpu->vmm.s.fInRendezvous = false;
1973	}
1974	else
1975	{
1976	/* Recursion. Do the same checks as in the SMP case. */
1977	Log(("VMMR3EmtRendezvous: %#x EMT (uni), recursion depth=%d\n", fFlags, pVM->vmm.s.cRendezvousRecursions));
1978	uint32_t fType = pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK;
1979	AssertLogRelReturn( !pVCpu->vmm.s.fInRendezvous
1980	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1981	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1982	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1983	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
1984	, VERR_DEADLOCK);
1985
1986	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1987	pVM->vmm.s.cRendezvousRecursions++;
1988	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1989	pVM->vmm.s.fRendezvousFlags = fFlags;
1990
1991	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1992
1993	pVM->vmm.s.fRendezvousFlags = fParentFlags;
1994	pVM->vmm.s.cRendezvousRecursions--;
1995	}
1996	Log(("VMMR3EmtRendezvous: %#x EMT (uni) returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1997	}
1998	else
1999	{
2000	/*
2001	* Spin lock. If busy, check for recursion, if not recursing wait for
2002	* the other EMT to finish while keeping a lookout for the RENDEZVOUS FF.
2003	*/
2004	int rc;
2005	rcStrict = VINF_SUCCESS;
2006	if (RT_UNLIKELY(!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0)))
2007	{
2008	/* Allow recursion in some cases. */
2009	if ( pVCpu->vmm.s.fInRendezvous
2010	&& ( (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2011	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2012	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2013	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
2014	))
2015	return VBOXSTRICTRC_TODO(vmmR3EmtRendezvousRecursive(pVM, pVCpu, fFlags, pfnRendezvous, pvUser));
2016
2017	AssertLogRelMsgReturn(!pVCpu->vmm.s.fInRendezvous, ("fRendezvousFlags=%#x\n", pVM->vmm.s.fRendezvousFlags),
2018	VERR_DEADLOCK);
2019
2020	Log(("VMMR3EmtRendezvous: %#x EMT#%u, waiting for lock...\n", fFlags, pVCpu->idCpu));
2021	while (!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0))
2022	{
2023	if (VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS))
2024	{
2025	rc = VMMR3EmtRendezvousFF(pVM, pVCpu);
2026	if ( rc != VINF_SUCCESS
2027	&& ( rcStrict == VINF_SUCCESS
2028	\|\| rcStrict > rc))
2029	rcStrict = rc;
2030	/** @todo Perhaps deal with termination here? */
2031	}
2032	ASMNopPause();
2033	}
2034	}
2035
2036	Log(("VMMR3EmtRendezvous: %#x EMT#%u\n", fFlags, pVCpu->idCpu));
2037	Assert(!VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS));
2038	Assert(!pVCpu->vmm.s.fInRendezvous);
2039	pVCpu->vmm.s.fInRendezvous = true;
2040
2041	/*
2042	* Clear the slate and setup the rendezvous. This is a semaphore ping-pong orgy. :-)
2043	*/
2044	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2045	{
2046	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i], 0);
2047	AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2048	}
2049	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2050	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2051	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2052	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2053	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
2054	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
2055	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2056	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
2057	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
2058	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
2059	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
2060
2061	/*
2062	* Set the FF and poke the other EMTs.
2063	*/
2064	VM_FF_SET(pVM, VM_FF_EMT_RENDEZVOUS);
2065	VMR3NotifyGlobalFFU(pVM->pUVM, VMNOTIFYFF_FLAGS_POKE);
2066
2067	/*
2068	* Do the same ourselves.
2069	*/
2070	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /* fIsCaller */, fFlags, pfnRendezvous, pvUser);
2071
2072	/*
2073	* The caller waits for the other EMTs to be done and return before doing
2074	* the cleanup. This makes away with wakeup / reset races we would otherwise
2075	* risk in the multiple release event semaphore code (hEvtRendezvousDoneCaller).
2076	*/
2077	for (;;)
2078	{
2079	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
2080	AssertLogRelRC(rc);
2081	if (!pVM->vmm.s.fRendezvousRecursion)
2082	break;
2083	rcStrict2 = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict2);
2084	}
2085
2086	/*
2087	* Get the return code and clean up a little bit.
2088	*/
2089	VBOXSTRICTRC rcStrict3 = pVM->vmm.s.i32RendezvousStatus;
2090	ASMAtomicWriteNullPtr((void * volatile *)&pVM->vmm.s.pfnRendezvous);
2091
2092	ASMAtomicWriteU32(&pVM->vmm.s.u32RendezvousLock, 0);
2093	pVCpu->vmm.s.fInRendezvous = false;
2094
2095	/*
2096	* Merge rcStrict, rcStrict2 and rcStrict3.
2097	*/
2098	AssertRC(VBOXSTRICTRC_VAL(rcStrict));
2099	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
2100	if ( rcStrict2 != VINF_SUCCESS
2101	&& ( rcStrict == VINF_SUCCESS
2102	\|\| rcStrict > rcStrict2))
2103	rcStrict = rcStrict2;
2104	if ( rcStrict3 != VINF_SUCCESS
2105	&& ( rcStrict == VINF_SUCCESS
2106	\|\| rcStrict > rcStrict3))
2107	rcStrict = rcStrict3;
2108	Log(("VMMR3EmtRendezvous: %#x EMT#%u returns %Rrc\n", fFlags, pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
2109	}
2110
2111	AssertLogRelMsgReturn( rcStrict <= VINF_SUCCESS
2112	\|\| (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST),
2113	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
2114	VERR_IPE_UNEXPECTED_INFO_STATUS);
2115	return VBOXSTRICTRC_VAL(rcStrict);
2116	}
2117
2118
2119	/**
2120	* Interface for vmR3SetHaltMethodU.
2121	*
2122	* @param pVCpu The cross context virtual CPU structure of the
2123	* calling EMT.
2124	* @param fMayHaltInRing0 The new state.
2125	* @param cNsSpinBlockThreshold The spin-vs-blocking threashold.
2126	* @thread EMT(pVCpu)
2127	*
2128	* @todo Move the EMT handling to VMM (or EM). I soooooo regret that VM
2129	* component.
2130	*/
2131	VMMR3_INT_DECL(void) VMMR3SetMayHaltInRing0(PVMCPU pVCpu, bool fMayHaltInRing0, uint32_t cNsSpinBlockThreshold)
2132	{
2133	pVCpu->vmm.s.fMayHaltInRing0 = fMayHaltInRing0;
2134	pVCpu->vmm.s.cNsSpinBlockThreshold = cNsSpinBlockThreshold;
2135	}
2136
2137
2138	/**
2139	* Read from the ring 0 jump buffer stack.
2140	*
2141	* @returns VBox status code.
2142	*
2143	* @param pVM The cross context VM structure.
2144	* @param idCpu The ID of the source CPU context (for the address).
2145	* @param R0Addr Where to start reading.
2146	* @param pvBuf Where to store the data we've read.
2147	* @param cbRead The number of bytes to read.
2148	*/
2149	VMMR3_INT_DECL(int) VMMR3ReadR0Stack(PVM pVM, VMCPUID idCpu, RTHCUINTPTR R0Addr, void *pvBuf, size_t cbRead)
2150	{
2151	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
2152	AssertReturn(pVCpu, VERR_INVALID_PARAMETER);
2153	AssertReturn(cbRead < ~(size_t)0 / 2, VERR_INVALID_PARAMETER);
2154
2155	int rc;
2156	#ifdef VMM_R0_SWITCH_STACK
2157	RTHCUINTPTR off = R0Addr - MMHyperCCToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
2158	#else
2159	RTHCUINTPTR off = pVCpu->vmm.s.CallRing3JmpBufR0.cbSavedStack - (pVCpu->vmm.s.CallRing3JmpBufR0.SpCheck - R0Addr);
2160	#endif
2161	if ( off < VMM_STACK_SIZE
2162	&& off + cbRead <= VMM_STACK_SIZE)
2163	{
2164	memcpy(pvBuf, &pVCpu->vmm.s.pbEMTStackR3[off], cbRead);
2165	rc = VINF_SUCCESS;
2166	}
2167	else
2168	rc = VERR_INVALID_POINTER;
2169
2170	/* Supply the setjmp return RIP/EIP. */
2171	if ( pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation + sizeof(RTR0UINTPTR) > R0Addr
2172	&& pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation < R0Addr + cbRead)
2173	{
2174	uint8_t const pbSrc = (uint8_t const )&pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue;
2175	size_t cbSrc = sizeof(pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue);
2176	size_t offDst = 0;
2177	if (R0Addr < pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2178	offDst = pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation - R0Addr;
2179	else if (R0Addr > pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2180	{
2181	size_t offSrc = R0Addr - pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation;
2182	Assert(offSrc < cbSrc);
2183	pbSrc -= offSrc;
2184	cbSrc -= offSrc;
2185	}
2186	if (cbSrc > cbRead - offDst)
2187	cbSrc = cbRead - offDst;
2188	memcpy((uint8_t *)pvBuf + offDst, pbSrc, cbSrc);
2189
2190	if (cbSrc == cbRead)
2191	rc = VINF_SUCCESS;
2192	}
2193
2194	return rc;
2195	}
2196
2197
2198	/**
2199	* Used by the DBGF stack unwinder to initialize the register state.
2200	*
2201	* @param pUVM The user mode VM handle.
2202	* @param idCpu The ID of the CPU being unwound.
2203	* @param pState The unwind state to initialize.
2204	*/
2205	VMMR3_INT_DECL(void) VMMR3InitR0StackUnwindState(PUVM pUVM, VMCPUID idCpu, struct RTDBGUNWINDSTATE *pState)
2206	{
2207	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, idCpu);
2208	AssertReturnVoid(pVCpu);
2209
2210	/*
2211	* Locate the resume point on the stack.
2212	*/
2213	#ifdef VMM_R0_SWITCH_STACK
2214	uintptr_t off = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume - MMHyperCCToR0(pVCpu->pVMR3, pVCpu->vmm.s.pbEMTStackR3);
2215	AssertReturnVoid(off < VMM_STACK_SIZE);
2216	#else
2217	uintptr_t off = 0;
2218	#endif
2219
2220	#ifdef RT_ARCH_AMD64
2221	/*
2222	* This code must match the .resume stuff in VMMR0JmpA-amd64.asm exactly.
2223	*/
2224	# ifdef VBOX_STRICT
2225	Assert((uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2226	off += 8; /* RESUME_MAGIC */
2227	# endif
2228	# ifdef RT_OS_WINDOWS
2229	off += 0xa0; /* XMM6 thru XMM15 */
2230	# endif
2231	pState->u.x86.uRFlags = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2232	off += 8;
2233	pState->u.x86.auRegs[X86_GREG_xBX] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2234	off += 8;
2235	# ifdef RT_OS_WINDOWS
2236	pState->u.x86.auRegs[X86_GREG_xSI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2237	off += 8;
2238	pState->u.x86.auRegs[X86_GREG_xDI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2239	off += 8;
2240	# endif
2241	pState->u.x86.auRegs[X86_GREG_x12] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2242	off += 8;
2243	pState->u.x86.auRegs[X86_GREG_x13] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2244	off += 8;
2245	pState->u.x86.auRegs[X86_GREG_x14] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2246	off += 8;
2247	pState->u.x86.auRegs[X86_GREG_x15] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2248	off += 8;
2249	pState->u.x86.auRegs[X86_GREG_xBP] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2250	off += 8;
2251	pState->uPc = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2252	off += 8;
2253
2254	#elif defined(RT_ARCH_X86)
2255	/*
2256	* This code must match the .resume stuff in VMMR0JmpA-x86.asm exactly.
2257	*/
2258	# ifdef VBOX_STRICT
2259	Assert((uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2260	off += 4; /* RESUME_MAGIC */
2261	# endif
2262	pState->u.x86.uRFlags = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2263	off += 4;
2264	pState->u.x86.auRegs[X86_GREG_xBX] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2265	off += 4;
2266	pState->u.x86.auRegs[X86_GREG_xSI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2267	off += 4;
2268	pState->u.x86.auRegs[X86_GREG_xDI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2269	off += 4;
2270	pState->u.x86.auRegs[X86_GREG_xBP] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2271	off += 4;
2272	pState->uPc = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2273	off += 4;
2274	#else
2275	# error "Port me"
2276	#endif
2277
2278	/*
2279	* This is all we really need here, though the above helps if the assembly
2280	* doesn't contain unwind info (currently only on win/64, so that is useful).
2281	*/
2282	pState->u.x86.auRegs[X86_GREG_xBP] = pVCpu->vmm.s.CallRing3JmpBufR0.SavedEbp;
2283	pState->u.x86.auRegs[X86_GREG_xSP] = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume;
2284	}
2285
2286
2287	/**
2288	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2289	*
2290	* @returns VBox status code.
2291	* @param pVM The cross context VM structure.
2292	* @param uOperation Operation to execute.
2293	* @param u64Arg Constant argument.
2294	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2295	* details.
2296	*/
2297	VMMR3DECL(int) VMMR3CallR0(PVM pVM, uint32_t uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2298	{
2299	PVMCPU pVCpu = VMMGetCpu(pVM);
2300	AssertReturn(pVCpu, VERR_VM_THREAD_NOT_EMT);
2301	return VMMR3CallR0Emt(pVM, pVCpu, (VMMR0OPERATION)uOperation, u64Arg, pReqHdr);
2302	}
2303
2304
2305	/**
2306	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2307	*
2308	* @returns VBox status code.
2309	* @param pVM The cross context VM structure.
2310	* @param pVCpu The cross context VM structure.
2311	* @param enmOperation Operation to execute.
2312	* @param u64Arg Constant argument.
2313	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2314	* details.
2315	*/
2316	VMMR3_INT_DECL(int) VMMR3CallR0Emt(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2317	{
2318	int rc;
2319	for (;;)
2320	{
2321	#ifdef NO_SUPCALLR0VMM
2322	rc = VERR_GENERAL_FAILURE;
2323	#else
2324	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), pVCpu->idCpu, enmOperation, u64Arg, pReqHdr);
2325	#endif
2326	/*
2327	* Flush the logs.
2328	*/
2329	#ifdef LOG_ENABLED
2330	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
2331	#endif
2332	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
2333	if (rc != VINF_VMM_CALL_HOST)
2334	break;
2335	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2336	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
2337	break;
2338	/* Resume R0 */
2339	}
2340
2341	AssertLogRelMsgReturn(rc == VINF_SUCCESS \|\| RT_FAILURE(rc),
2342	("enmOperation=%u rc=%Rrc\n", enmOperation, rc),
2343	VERR_IPE_UNEXPECTED_INFO_STATUS);
2344	return rc;
2345	}
2346
2347
2348	/**
2349	* Service a call to the ring-3 host code.
2350	*
2351	* @returns VBox status code.
2352	* @param pVM The cross context VM structure.
2353	* @param pVCpu The cross context virtual CPU structure.
2354	* @remarks Careful with critsects.
2355	*/
2356	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu)
2357	{
2358	/*
2359	* We must also check for pending critsect exits or else we can deadlock
2360	* when entering other critsects here.
2361	*/
2362	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PDM_CRITSECT))
2363	PDMCritSectBothFF(pVCpu);
2364
2365	switch (pVCpu->vmm.s.enmCallRing3Operation)
2366	{
2367	/*
2368	* Acquire a critical section.
2369	*/
2370	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
2371	{
2372	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectEnterEx((PPDMCRITSECT)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2373	true /fCallRing3/);
2374	break;
2375	}
2376
2377	/*
2378	* Enter a r/w critical section exclusively.
2379	*/
2380	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_EXCL:
2381	{
2382	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterExclEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2383	true /fCallRing3/);
2384	break;
2385	}
2386
2387	/*
2388	* Enter a r/w critical section shared.
2389	*/
2390	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_SHARED:
2391	{
2392	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterSharedEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2393	true /fCallRing3/);
2394	break;
2395	}
2396
2397	/*
2398	* Acquire the PDM lock.
2399	*/
2400	case VMMCALLRING3_PDM_LOCK:
2401	{
2402	pVCpu->vmm.s.rcCallRing3 = PDMR3LockCall(pVM);
2403	break;
2404	}
2405
2406	/*
2407	* Grow the PGM pool.
2408	*/
2409	case VMMCALLRING3_PGM_POOL_GROW:
2410	{
2411	pVCpu->vmm.s.rcCallRing3 = PGMR3PoolGrow(pVM, pVCpu);
2412	break;
2413	}
2414
2415	/*
2416	* Maps an page allocation chunk into ring-3 so ring-0 can use it.
2417	*/
2418	case VMMCALLRING3_PGM_MAP_CHUNK:
2419	{
2420	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysChunkMap(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2421	break;
2422	}
2423
2424	/*
2425	* Allocates more handy pages.
2426	*/
2427	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
2428	{
2429	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateHandyPages(pVM);
2430	break;
2431	}
2432
2433	/*
2434	* Allocates a large page.
2435	*/
2436	case VMMCALLRING3_PGM_ALLOCATE_LARGE_HANDY_PAGE:
2437	{
2438	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateLargeHandyPage(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2439	break;
2440	}
2441
2442	/*
2443	* Acquire the PGM lock.
2444	*/
2445	case VMMCALLRING3_PGM_LOCK:
2446	{
2447	pVCpu->vmm.s.rcCallRing3 = PGMR3LockCall(pVM);
2448	break;
2449	}
2450
2451	/*
2452	* Acquire the MM hypervisor heap lock.
2453	*/
2454	case VMMCALLRING3_MMHYPER_LOCK:
2455	{
2456	pVCpu->vmm.s.rcCallRing3 = MMR3LockCall(pVM);
2457	break;
2458	}
2459
2460	/*
2461	* This is a noop. We just take this route to avoid unnecessary
2462	* tests in the loops.
2463	*/
2464	case VMMCALLRING3_VMM_LOGGER_FLUSH:
2465	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2466	LogAlways(("FLUSH\n"));
2467	break;
2468
2469	/*
2470	* Set the VM error message.
2471	*/
2472	case VMMCALLRING3_VM_SET_ERROR:
2473	VMR3SetErrorWorker(pVM);
2474	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2475	break;
2476
2477	/*
2478	* Set the VM runtime error message.
2479	*/
2480	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
2481	pVCpu->vmm.s.rcCallRing3 = VMR3SetRuntimeErrorWorker(pVM);
2482	break;
2483
2484	/*
2485	* Signal a ring 0 hypervisor assertion.
2486	* Cancel the longjmp operation that's in progress.
2487	*/
2488	case VMMCALLRING3_VM_R0_ASSERTION:
2489	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2490	pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call = false;
2491	#ifdef RT_ARCH_X86
2492	pVCpu->vmm.s.CallRing3JmpBufR0.eip = 0;
2493	#else
2494	pVCpu->vmm.s.CallRing3JmpBufR0.rip = 0;
2495	#endif
2496	#ifdef VMM_R0_SWITCH_STACK
2497	(uint64_t )pVCpu->vmm.s.pbEMTStackR3 = 0; /* clear marker */
2498	#endif
2499	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg1));
2500	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg2));
2501	return VERR_VMM_RING0_ASSERTION;
2502
2503	/*
2504	* A forced switch to ring 0 for preemption purposes.
2505	*/
2506	case VMMCALLRING3_VM_R0_PREEMPT:
2507	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2508	break;
2509
2510	default:
2511	AssertMsgFailed(("enmCallRing3Operation=%d\n", pVCpu->vmm.s.enmCallRing3Operation));
2512	return VERR_VMM_UNKNOWN_RING3_CALL;
2513	}
2514
2515	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2516	return VINF_SUCCESS;
2517	}
2518
2519
2520	/**
2521	* Displays the Force action Flags.
2522	*
2523	* @param pVM The cross context VM structure.
2524	* @param pHlp The output helpers.
2525	* @param pszArgs The additional arguments (ignored).
2526	*/
2527	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2528	{
2529	int c;
2530	uint32_t f;
2531	NOREF(pszArgs);
2532
2533	#define PRINT_FLAG(prf,flag) do { \
2534	if (f & (prf##flag)) \
2535	{ \
2536	static const char *s_psz = #flag; \
2537	if (!(c % 6)) \
2538	pHlp->pfnPrintf(pHlp, "%s\n %s", c ? "," : "", s_psz); \
2539	else \
2540	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2541	c++; \
2542	f &= ~(prf##flag); \
2543	} \
2544	} while (0)
2545
2546	#define PRINT_GROUP(prf,grp,sfx) do { \
2547	if (f & (prf##grp##sfx)) \
2548	{ \
2549	static const char *s_psz = #grp; \
2550	if (!(c % 5)) \
2551	pHlp->pfnPrintf(pHlp, "%s %s", c ? ",\n" : " Groups:\n", s_psz); \
2552	else \
2553	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2554	c++; \
2555	} \
2556	} while (0)
2557
2558	/*
2559	* The global flags.
2560	*/
2561	const uint32_t fGlobalForcedActions = pVM->fGlobalForcedActions;
2562	pHlp->pfnPrintf(pHlp, "Global FFs: %#RX32", fGlobalForcedActions);
2563
2564	/* show the flag mnemonics */
2565	c = 0;
2566	f = fGlobalForcedActions;
2567	PRINT_FLAG(VM_FF_,TM_VIRTUAL_SYNC);
2568	PRINT_FLAG(VM_FF_,PDM_QUEUES);
2569	PRINT_FLAG(VM_FF_,PDM_DMA);
2570	PRINT_FLAG(VM_FF_,DBGF);
2571	PRINT_FLAG(VM_FF_,REQUEST);
2572	PRINT_FLAG(VM_FF_,CHECK_VM_STATE);
2573	PRINT_FLAG(VM_FF_,RESET);
2574	PRINT_FLAG(VM_FF_,EMT_RENDEZVOUS);
2575	PRINT_FLAG(VM_FF_,PGM_NEED_HANDY_PAGES);
2576	PRINT_FLAG(VM_FF_,PGM_NO_MEMORY);
2577	PRINT_FLAG(VM_FF_,PGM_POOL_FLUSH_PENDING);
2578	PRINT_FLAG(VM_FF_,DEBUG_SUSPEND);
2579	if (f)
2580	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX32\n", c ? "," : "", f);
2581	else
2582	pHlp->pfnPrintf(pHlp, "\n");
2583
2584	/* the groups */
2585	c = 0;
2586	f = fGlobalForcedActions;
2587	PRINT_GROUP(VM_FF_,EXTERNAL_SUSPENDED,_MASK);
2588	PRINT_GROUP(VM_FF_,EXTERNAL_HALTED,_MASK);
2589	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE,_MASK);
2590	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2591	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_POST,_MASK);
2592	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY_POST,_MASK);
2593	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY,_MASK);
2594	PRINT_GROUP(VM_FF_,ALL_REM,_MASK);
2595	if (c)
2596	pHlp->pfnPrintf(pHlp, "\n");
2597
2598	/*
2599	* Per CPU flags.
2600	*/
2601	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2602	{
2603	PVMCPU pVCpu = pVM->apCpusR3[i];
2604	const uint64_t fLocalForcedActions = pVCpu->fLocalForcedActions;
2605	pHlp->pfnPrintf(pHlp, "CPU %u FFs: %#RX64", i, fLocalForcedActions);
2606
2607	/* show the flag mnemonics */
2608	c = 0;
2609	f = fLocalForcedActions;
2610	PRINT_FLAG(VMCPU_FF_,INTERRUPT_APIC);
2611	PRINT_FLAG(VMCPU_FF_,INTERRUPT_PIC);
2612	PRINT_FLAG(VMCPU_FF_,TIMER);
2613	PRINT_FLAG(VMCPU_FF_,INTERRUPT_NMI);
2614	PRINT_FLAG(VMCPU_FF_,INTERRUPT_SMI);
2615	PRINT_FLAG(VMCPU_FF_,PDM_CRITSECT);
2616	PRINT_FLAG(VMCPU_FF_,UNHALT);
2617	PRINT_FLAG(VMCPU_FF_,IEM);
2618	PRINT_FLAG(VMCPU_FF_,UPDATE_APIC);
2619	PRINT_FLAG(VMCPU_FF_,DBGF);
2620	PRINT_FLAG(VMCPU_FF_,REQUEST);
2621	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_CR3);
2622	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_PAE_PDPES);
2623	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3);
2624	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3_NON_GLOBAL);
2625	PRINT_FLAG(VMCPU_FF_,TLB_FLUSH);
2626	PRINT_FLAG(VMCPU_FF_,INHIBIT_INTERRUPTS);
2627	PRINT_FLAG(VMCPU_FF_,BLOCK_NMIS);
2628	PRINT_FLAG(VMCPU_FF_,TO_R3);
2629	PRINT_FLAG(VMCPU_FF_,IOM);
2630	if (f)
2631	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX64\n", c ? "," : "", f);
2632	else
2633	pHlp->pfnPrintf(pHlp, "\n");
2634
2635	if (fLocalForcedActions & VMCPU_FF_INHIBIT_INTERRUPTS)
2636	pHlp->pfnPrintf(pHlp, " intr inhibit RIP: %RGp\n", EMGetInhibitInterruptsPC(pVCpu));
2637
2638	/* the groups */
2639	c = 0;
2640	f = fLocalForcedActions;
2641	PRINT_GROUP(VMCPU_FF_,EXTERNAL_SUSPENDED,_MASK);
2642	PRINT_GROUP(VMCPU_FF_,EXTERNAL_HALTED,_MASK);
2643	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE,_MASK);
2644	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2645	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_POST,_MASK);
2646	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY_POST,_MASK);
2647	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY,_MASK);
2648	PRINT_GROUP(VMCPU_FF_,RESUME_GUEST,_MASK);
2649	PRINT_GROUP(VMCPU_FF_,HM_TO_R3,_MASK);
2650	PRINT_GROUP(VMCPU_FF_,ALL_REM,_MASK);
2651	if (c)
2652	pHlp->pfnPrintf(pHlp, "\n");
2653	}
2654
2655	#undef PRINT_FLAG
2656	#undef PRINT_GROUP
2657	}
2658

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source: vbox/trunk/src/VBox/VMM/VMMR3/VMM.cpp@ 87819

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