VMM.cpp@ 87821

Last change on this file since 87821 was 87821, 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. [build fix] bugref:9943
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1	/* $Id: VMM.cpp 87821 2021-02-20 10:26:21Z 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	#if 0 /* pointless when timers doesn't run on EMT */
172	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, TMTIMERHANDLE hTimer, void *pvUser);
173	#endif
174	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
175	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser);
176	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu);
177	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
178
179
180	/**
181	* Initializes the VMM.
182	*
183	* @returns VBox status code.
184	* @param pVM The cross context VM structure.
185	*/
186	VMMR3_INT_DECL(int) VMMR3Init(PVM pVM)
187	{
188	LogFlow(("VMMR3Init\n"));
189
190	/*
191	* Assert alignment, sizes and order.
192	*/
193	AssertCompile(sizeof(pVM->vmm.s) <= sizeof(pVM->vmm.padding));
194	AssertCompile(RT_SIZEOFMEMB(VMCPU, vmm.s) <= RT_SIZEOFMEMB(VMCPU, vmm.padding));
195
196	/*
197	* Init basic VM VMM members.
198	*/
199	pVM->vmm.s.pahEvtRendezvousEnterOrdered = NULL;
200	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
201	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
202	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
203	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
204	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
205	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
206	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
207	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
208
209	#if 0 /* pointless when timers doesn't run on EMT */
210	/** @cfgm{/YieldEMTInterval, uint32_t, 1, UINT32_MAX, 23, ms}
211	* The EMT yield interval. The EMT yielding is a hack we employ to play a
212	* bit nicer with the rest of the system (like for instance the GUI).
213	*/
214	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "YieldEMTInterval", &pVM->vmm.s.cYieldEveryMillies,
215	23 /* Value arrived at after experimenting with the grub boot prompt. */);
216	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"YieldEMTInterval\", rc=%Rrc\n", rc), rc);
217	#endif
218
219	/** @cfgm{/VMM/UsePeriodicPreemptionTimers, boolean, true}
220	* Controls whether we employ per-cpu preemption timers to limit the time
221	* spent executing guest code. This option is not available on all
222	* platforms and we will silently ignore this setting then. If we are
223	* running in VT-x mode, we will use the VMX-preemption timer instead of
224	* this one when possible.
225	*/
226	PCFGMNODE pCfgVMM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "VMM");
227	int rc = CFGMR3QueryBoolDef(pCfgVMM, "UsePeriodicPreemptionTimers", &pVM->vmm.s.fUsePeriodicPreemptionTimers, true);
228	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"VMM/UsePeriodicPreemptionTimers\", rc=%Rrc\n", rc), rc);
229
230	/*
231	* Initialize the VMM rendezvous semaphores.
232	*/
233	pVM->vmm.s.pahEvtRendezvousEnterOrdered = (PRTSEMEVENT)MMR3HeapAlloc(pVM, MM_TAG_VMM, sizeof(RTSEMEVENT) * pVM->cCpus);
234	if (!pVM->vmm.s.pahEvtRendezvousEnterOrdered)
235	return VERR_NO_MEMORY;
236	for (VMCPUID i = 0; i < pVM->cCpus; i++)
237	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
238	for (VMCPUID i = 0; i < pVM->cCpus; i++)
239	{
240	rc = RTSemEventCreate(&pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
241	AssertRCReturn(rc, rc);
242	}
243	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousEnterOneByOne);
244	AssertRCReturn(rc, rc);
245	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
246	AssertRCReturn(rc, rc);
247	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousDone);
248	AssertRCReturn(rc, rc);
249	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousDoneCaller);
250	AssertRCReturn(rc, rc);
251	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPush);
252	AssertRCReturn(rc, rc);
253	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPop);
254	AssertRCReturn(rc, rc);
255	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
256	AssertRCReturn(rc, rc);
257	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
258	AssertRCReturn(rc, rc);
259
260	/*
261	* Register the saved state data unit.
262	*/
263	rc = SSMR3RegisterInternal(pVM, "vmm", 1, VMM_SAVED_STATE_VERSION, VMM_STACK_SIZE + sizeof(RTGCPTR),
264	NULL, NULL, NULL,
265	NULL, vmmR3Save, NULL,
266	NULL, vmmR3Load, NULL);
267	if (RT_FAILURE(rc))
268	return rc;
269
270	/*
271	* Register the Ring-0 VM handle with the session for fast ioctl calls.
272	*/
273	rc = SUPR3SetVMForFastIOCtl(VMCC_GET_VMR0_FOR_CALL(pVM));
274	if (RT_FAILURE(rc))
275	return rc;
276
277	/*
278	* Init various sub-components.
279	*/
280	rc = vmmR3InitStacks(pVM);
281	if (RT_SUCCESS(rc))
282	{
283	rc = vmmR3InitLoggers(pVM);
284
285	#ifdef VBOX_WITH_NMI
286	/*
287	* Allocate mapping for the host APIC.
288	*/
289	if (RT_SUCCESS(rc))
290	{
291	rc = MMR3HyperReserve(pVM, PAGE_SIZE, "Host APIC", &pVM->vmm.s.GCPtrApicBase);
292	AssertRC(rc);
293	}
294	#endif
295	if (RT_SUCCESS(rc))
296	{
297	/*
298	* Debug info and statistics.
299	*/
300	DBGFR3InfoRegisterInternal(pVM, "fflags", "Displays the current Forced actions Flags.", vmmR3InfoFF);
301	vmmR3InitRegisterStats(pVM);
302	vmmInitFormatTypes();
303
304	return VINF_SUCCESS;
305	}
306	}
307	/** @todo Need failure cleanup? */
308
309	return rc;
310	}
311
312
313	/**
314	* Allocate & setup the VMM RC stack(s) (for EMTs).
315	*
316	* The stacks are also used for long jumps in Ring-0.
317	*
318	* @returns VBox status code.
319	* @param pVM The cross context VM structure.
320	*
321	* @remarks The optional guard page gets it protection setup up during R3 init
322	* completion because of init order issues.
323	*/
324	static int vmmR3InitStacks(PVM pVM)
325	{
326	int rc = VINF_SUCCESS;
327	#ifdef VMM_R0_SWITCH_STACK
328	uint32_t fFlags = MMHYPER_AONR_FLAGS_KERNEL_MAPPING;
329	#else
330	uint32_t fFlags = 0;
331	#endif
332
333	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
334	{
335	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
336
337	#ifdef VBOX_STRICT_VMM_STACK
338	rc = MMR3HyperAllocOnceNoRelEx(pVM, PAGE_SIZE + VMM_STACK_SIZE + PAGE_SIZE,
339	#else
340	rc = MMR3HyperAllocOnceNoRelEx(pVM, VMM_STACK_SIZE,
341	#endif
342	PAGE_SIZE, MM_TAG_VMM, fFlags, (void **)&pVCpu->vmm.s.pbEMTStackR3);
343	if (RT_SUCCESS(rc))
344	{
345	#ifdef VBOX_STRICT_VMM_STACK
346	pVCpu->vmm.s.pbEMTStackR3 += PAGE_SIZE;
347	#endif
348	pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
349
350	}
351	}
352
353	return rc;
354	}
355
356
357	/**
358	* Initialize the loggers.
359	*
360	* @returns VBox status code.
361	* @param pVM The cross context VM structure.
362	*/
363	static int vmmR3InitLoggers(PVM pVM)
364	{
365	int rc;
366	#define RTLogCalcSizeForR0(cGroups, fFlags) (RT_UOFFSETOF_DYN(VMMR0LOGGER, Logger.afGroups[cGroups]) + PAGE_SIZE)
367
368	/*
369	* Allocate R0 Logger instance (finalized in the relocator).
370	*/
371	#if defined(LOG_ENABLED) && defined(VBOX_WITH_R0_LOGGING)
372	PRTLOGGER pLogger = RTLogDefaultInstance();
373	if (pLogger)
374	{
375	size_t const cbLogger = RTLogCalcSizeForR0(pLogger->cGroups, 0);
376	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
377	{
378	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
379	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
380	(void **)&pVCpu->vmm.s.pR0LoggerR3);
381	if (RT_FAILURE(rc))
382	return rc;
383	pVCpu->vmm.s.pR0LoggerR3->pVM = VMCC_GET_VMR0_FOR_CALL(pVM);
384	//pVCpu->vmm.s.pR0LoggerR3->fCreated = false;
385	pVCpu->vmm.s.pR0LoggerR3->cbLogger = (uint32_t)cbLogger;
386	pVCpu->vmm.s.pR0LoggerR0 = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pR0LoggerR3);
387	}
388	}
389	#endif /* LOG_ENABLED && VBOX_WITH_R0_LOGGING */
390
391	/*
392	* Release logging.
393	*/
394	PRTLOGGER pRelLogger = RTLogRelGetDefaultInstance();
395	if (pRelLogger)
396	{
397	/*
398	* Ring-0 release logger.
399	*/
400	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
401	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
402	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
403
404	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
405	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
406	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
407
408	size_t const cbLogger = RTLogCalcSizeForR0(pRelLogger->cGroups, 0);
409
410	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
411	{
412	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
413	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
414	(void **)&pVCpu->vmm.s.pR0RelLoggerR3);
415	if (RT_FAILURE(rc))
416	return rc;
417	PVMMR0LOGGER pVmmLogger = pVCpu->vmm.s.pR0RelLoggerR3;
418	RTR0PTR R0PtrVmmLogger = MMHyperR3ToR0(pVM, pVmmLogger);
419	pVCpu->vmm.s.pR0RelLoggerR0 = R0PtrVmmLogger;
420	pVmmLogger->pVM = VMCC_GET_VMR0_FOR_CALL(pVM);
421	pVmmLogger->cbLogger = (uint32_t)cbLogger;
422	pVmmLogger->fCreated = false;
423	pVmmLogger->fFlushingDisabled = false;
424	pVmmLogger->fRegistered = false;
425	pVmmLogger->idCpu = idCpu;
426
427	char szR0ThreadName[16];
428	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", idCpu);
429	rc = RTLogCreateForR0(&pVmmLogger->Logger, pVmmLogger->cbLogger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
430	pfnLoggerWrapper, pfnLoggerFlush,
431	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
432	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
433
434	/* We only update the release log instance here. */
435	rc = RTLogCopyGroupsAndFlagsForR0(&pVmmLogger->Logger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
436	pRelLogger, RTLOGFLAGS_BUFFERED, UINT32_MAX);
437	AssertReleaseMsgRCReturn(rc, ("RTLogCopyGroupsAndFlagsForR0 failed! rc=%Rra\n", rc), rc);
438
439	pVmmLogger->fCreated = true;
440	}
441	}
442
443	return VINF_SUCCESS;
444	}
445
446
447	/**
448	* VMMR3Init worker that register the statistics with STAM.
449	*
450	* @param pVM The cross context VM structure.
451	*/
452	static void vmmR3InitRegisterStats(PVM pVM)
453	{
454	RT_NOREF_PV(pVM);
455
456	/*
457	* Statistics.
458	*/
459	STAM_REG(pVM, &pVM->vmm.s.StatRunGC, STAMTYPE_COUNTER, "/VMM/RunGC", STAMUNIT_OCCURENCES, "Number of context switches.");
460	STAM_REG(pVM, &pVM->vmm.s.StatRZRetNormal, STAMTYPE_COUNTER, "/VMM/RZRet/Normal", STAMUNIT_OCCURENCES, "Number of VINF_SUCCESS returns.");
461	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterrupt, STAMTYPE_COUNTER, "/VMM/RZRet/Interrupt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT returns.");
462	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptHyper, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptHyper", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_HYPER returns.");
463	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGuestTrap, STAMTYPE_COUNTER, "/VMM/RZRet/GuestTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_GUEST_TRAP returns.");
464	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitch, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitch", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH returns.");
465	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitchInt, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitchInt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH_INT returns.");
466	STAM_REG(pVM, &pVM->vmm.s.StatRZRetStaleSelector, STAMTYPE_COUNTER, "/VMM/RZRet/StaleSelector", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_STALE_SELECTOR returns.");
467	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIRETTrap, STAMTYPE_COUNTER, "/VMM/RZRet/IRETTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_IRET_TRAP returns.");
468	STAM_REG(pVM, &pVM->vmm.s.StatRZRetEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/Emulate", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION returns.");
469	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/PatchEmulate", STAMUNIT_OCCURENCES, "Number of VINF_PATCH_EMULATE_INSTR returns.");
470	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIORead, STAMTYPE_COUNTER, "/VMM/RZRet/IORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_READ returns.");
471	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_WRITE returns.");
472	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_COMMIT_WRITE returns.");
473	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIORead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ returns.");
474	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_WRITE returns.");
475	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_COMMIT_WRITE returns.");
476	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOReadWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOReadWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ_WRITE returns.");
477	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchRead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchRead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_READ returns.");
478	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_WRITE returns.");
479	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRRead, STAMTYPE_COUNTER, "/VMM/RZRet/MSRRead", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_READ returns.");
480	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MSRWrite", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_WRITE returns.");
481	STAM_REG(pVM, &pVM->vmm.s.StatRZRetLDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/LDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_GDT_FAULT returns.");
482	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/GDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_LDT_FAULT returns.");
483	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/IDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_IDT_FAULT returns.");
484	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTSSFault, STAMTYPE_COUNTER, "/VMM/RZRet/TSSFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_TSS_FAULT returns.");
485	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCSAMTask, STAMTYPE_COUNTER, "/VMM/RZRet/CSAMTask", STAMUNIT_OCCURENCES, "Number of VINF_CSAM_PENDING_ACTION returns.");
486	STAM_REG(pVM, &pVM->vmm.s.StatRZRetSyncCR3, STAMTYPE_COUNTER, "/VMM/RZRet/SyncCR", STAMUNIT_OCCURENCES, "Number of VINF_PGM_SYNC_CR3 returns.");
487	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMisc, STAMTYPE_COUNTER, "/VMM/RZRet/Misc", STAMUNIT_OCCURENCES, "Number of misc returns.");
488	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchInt3, STAMTYPE_COUNTER, "/VMM/RZRet/PatchInt3", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_INT3 returns.");
489	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchPF, STAMTYPE_COUNTER, "/VMM/RZRet/PatchPF", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_PF returns.");
490	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchGP, STAMTYPE_COUNTER, "/VMM/RZRet/PatchGP", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_GP returns.");
491	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchIretIRQ, STAMTYPE_COUNTER, "/VMM/RZRet/PatchIret", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PENDING_IRQ_AFTER_IRET returns.");
492	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRescheduleREM, STAMTYPE_COUNTER, "/VMM/RZRet/ScheduleREM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RESCHEDULE_REM returns.");
493	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Total, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns.");
494	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.");
495	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.");
496	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.");
497	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.");
498	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.");
499	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.");
500	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.");
501	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.");
502	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.");
503	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.");
504	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.");
505	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTimerPending, STAMTYPE_COUNTER, "/VMM/RZRet/TimerPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TIMER_PENDING returns.");
506	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptPending, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_PENDING returns.");
507	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPATMDuplicateFn, STAMTYPE_COUNTER, "/VMM/RZRet/PATMDuplicateFn", STAMUNIT_OCCURENCES, "Number of VINF_PATM_DUPLICATE_FUNCTION returns.");
508	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMChangeMode, STAMTYPE_COUNTER, "/VMM/RZRet/PGMChangeMode", STAMUNIT_OCCURENCES, "Number of VINF_PGM_CHANGE_MODE returns.");
509	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMFlushPending, STAMTYPE_COUNTER, "/VMM/RZRet/PGMFlushPending", STAMUNIT_OCCURENCES, "Number of VINF_PGM_POOL_FLUSH_PENDING returns.");
510	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPendingRequest, STAMTYPE_COUNTER, "/VMM/RZRet/PendingRequest", STAMUNIT_OCCURENCES, "Number of VINF_EM_PENDING_REQUEST returns.");
511	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchTPR, STAMTYPE_COUNTER, "/VMM/RZRet/PatchTPR", STAMUNIT_OCCURENCES, "Number of VINF_EM_HM_PATCH_TPR_INSTR returns.");
512	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCallRing3, STAMTYPE_COUNTER, "/VMM/RZCallR3/Misc", STAMUNIT_OCCURENCES, "Number of Other ring-3 calls.");
513	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_LOCK calls.");
514	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMCritSectEnter, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMCritSectEnter", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_CRITSECT_ENTER calls.");
515	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_LOCK calls.");
516	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMPoolGrow, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMPoolGrow", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_POOL_GROW calls.");
517	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMMapChunk, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMMapChunk", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_MAP_CHUNK calls.");
518	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMAllocHandy, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMAllocHandy", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES calls.");
519	STAM_REG(pVM, &pVM->vmm.s.StatRZCallLogFlush, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMMLogFlush", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VMM_LOGGER_FLUSH calls.");
520	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMSetError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_ERROR calls.");
521	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetRuntimeError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMRuntimeError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_RUNTIME_ERROR calls.");
522
523	#ifdef VBOX_WITH_STATISTICS
524	for (VMCPUID i = 0; i < pVM->cCpus; i++)
525	{
526	PVMCPU pVCpu = pVM->apCpusR3[i];
527	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);
528	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cbUsedAvg, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Average stack usage.", "/VMM/Stack/CPU%u/Avg", i);
529	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cUsedTotal, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of stack usages.", "/VMM/Stack/CPU%u/Uses", i);
530	}
531	#endif
532	for (VMCPUID i = 0; i < pVM->cCpus; i++)
533	{
534	PVMCPU pVCpu = pVM->apCpusR3[i];
535	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlock, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlock", i);
536	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOnTime, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOnTime", i);
537	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOverslept, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOverslept", i);
538	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockInsomnia, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockInsomnia", i);
539	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExec, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec", i);
540	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromSpin, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromSpin", i);
541	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromBlock, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromBlock", i);
542	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0Halts, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryCounter", i);
543	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsSucceeded, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistorySucceeded", i);
544	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsToRing3, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryToRing3", i);
545	}
546	}
547
548
549	/**
550	* Worker for VMMR3InitR0 that calls ring-0 to do EMT specific initialization.
551	*
552	* @returns VBox status code.
553	* @param pVM The cross context VM structure.
554	* @param pVCpu The cross context per CPU structure.
555	* @thread EMT(pVCpu)
556	*/
557	static DECLCALLBACK(int) vmmR3InitR0Emt(PVM pVM, PVMCPU pVCpu)
558	{
559	return VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_VMMR0_INIT_EMT, 0, NULL);
560	}
561
562
563	/**
564	* Initializes the R0 VMM.
565	*
566	* @returns VBox status code.
567	* @param pVM The cross context VM structure.
568	*/
569	VMMR3_INT_DECL(int) VMMR3InitR0(PVM pVM)
570	{
571	int rc;
572	PVMCPU pVCpu = VMMGetCpu(pVM);
573	Assert(pVCpu && pVCpu->idCpu == 0);
574
575	#ifdef LOG_ENABLED
576	/*
577	* Initialize the ring-0 logger if we haven't done so yet.
578	*/
579	if ( pVCpu->vmm.s.pR0LoggerR3
580	&& !pVCpu->vmm.s.pR0LoggerR3->fCreated)
581	{
582	rc = VMMR3UpdateLoggers(pVM);
583	if (RT_FAILURE(rc))
584	return rc;
585	}
586	#endif
587
588	/*
589	* Call Ring-0 entry with init code.
590	*/
591	for (;;)
592	{
593	#ifdef NO_SUPCALLR0VMM
594	//rc = VERR_GENERAL_FAILURE;
595	rc = VINF_SUCCESS;
596	#else
597	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), 0 /idCpu/, VMMR0_DO_VMMR0_INIT, RT_MAKE_U64(VMMGetSvnRev(), vmmGetBuildType()), NULL);
598	#endif
599	/*
600	* Flush the logs.
601	*/
602	#ifdef LOG_ENABLED
603	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
604	#endif
605	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
606	if (rc != VINF_VMM_CALL_HOST)
607	break;
608	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
609	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
610	break;
611	/* Resume R0 */
612	}
613
614	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
615	{
616	LogRel(("VMM: R0 init failed, rc=%Rra\n", rc));
617	if (RT_SUCCESS(rc))
618	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
619	}
620
621	/* Log whether thread-context hooks are used (on Linux this can depend on how the kernel is configured). */
622	if (pVM->apCpusR3[0]->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
623	LogRel(("VMM: Enabled thread-context hooks\n"));
624	else
625	LogRel(("VMM: Thread-context hooks unavailable\n"));
626
627	/* Log RTThreadPreemptIsPendingTrusty() and RTThreadPreemptIsPossible() results. */
628	if (pVM->vmm.s.fIsPreemptPendingApiTrusty)
629	LogRel(("VMM: RTThreadPreemptIsPending() can be trusted\n"));
630	else
631	LogRel(("VMM: Warning! RTThreadPreemptIsPending() cannot be trusted! Need to update kernel info?\n"));
632	if (pVM->vmm.s.fIsPreemptPossible)
633	LogRel(("VMM: Kernel preemption is possible\n"));
634	else
635	LogRel(("VMM: Kernel preemption is not possible it seems\n"));
636
637	/*
638	* Send all EMTs to ring-0 to get their logger initialized.
639	*/
640	for (VMCPUID idCpu = 0; RT_SUCCESS(rc) && idCpu < pVM->cCpus; idCpu++)
641	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)vmmR3InitR0Emt, 2, pVM, pVM->apCpusR3[idCpu]);
642
643	return rc;
644	}
645
646
647	/**
648	* Called when an init phase completes.
649	*
650	* @returns VBox status code.
651	* @param pVM The cross context VM structure.
652	* @param enmWhat Which init phase.
653	*/
654	VMMR3_INT_DECL(int) VMMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
655	{
656	int rc = VINF_SUCCESS;
657
658	switch (enmWhat)
659	{
660	case VMINITCOMPLETED_RING3:
661	{
662	#if 0 /* pointless when timers doesn't run on EMT */
663	/*
664	* Create the EMT yield timer.
665	*/
666	rc = TMR3TimerCreate(pVM, TMCLOCK_REAL, vmmR3YieldEMT, NULL, TMTIMER_FLAGS_NO_RING0,
667	"EMT Yielder", &pVM->vmm.s.hYieldTimer);
668	AssertRCReturn(rc, rc);
669
670	rc = TMTimerSetMillies(pVM, pVM->vmm.s.hYieldTimer, pVM->vmm.s.cYieldEveryMillies);
671	AssertRCReturn(rc, rc);
672	#endif
673	break;
674	}
675
676	case VMINITCOMPLETED_HM:
677	{
678	/*
679	* Disable the periodic preemption timers if we can use the
680	* VMX-preemption timer instead.
681	*/
682	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
683	&& HMR3IsVmxPreemptionTimerUsed(pVM))
684	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
685	LogRel(("VMM: fUsePeriodicPreemptionTimers=%RTbool\n", pVM->vmm.s.fUsePeriodicPreemptionTimers));
686
687	/*
688	* Last chance for GIM to update its CPUID leaves if it requires
689	* knowledge/information from HM initialization.
690	*/
691	rc = GIMR3InitCompleted(pVM);
692	AssertRCReturn(rc, rc);
693
694	/*
695	* CPUM's post-initialization (print CPUIDs).
696	*/
697	CPUMR3LogCpuIdAndMsrFeatures(pVM);
698	break;
699	}
700
701	default: /* shuts up gcc */
702	break;
703	}
704
705	return rc;
706	}
707
708
709	/**
710	* Terminate the VMM bits.
711	*
712	* @returns VBox status code.
713	* @param pVM The cross context VM structure.
714	*/
715	VMMR3_INT_DECL(int) VMMR3Term(PVM pVM)
716	{
717	PVMCPU pVCpu = VMMGetCpu(pVM);
718	Assert(pVCpu && pVCpu->idCpu == 0);
719
720	/*
721	* Call Ring-0 entry with termination code.
722	*/
723	int rc;
724	for (;;)
725	{
726	#ifdef NO_SUPCALLR0VMM
727	//rc = VERR_GENERAL_FAILURE;
728	rc = VINF_SUCCESS;
729	#else
730	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), 0 /idCpu/, VMMR0_DO_VMMR0_TERM, 0, NULL);
731	#endif
732	/*
733	* Flush the logs.
734	*/
735	#ifdef LOG_ENABLED
736	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
737	#endif
738	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
739	if (rc != VINF_VMM_CALL_HOST)
740	break;
741	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
742	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
743	break;
744	/* Resume R0 */
745	}
746	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
747	{
748	LogRel(("VMM: VMMR3Term: R0 term failed, rc=%Rra. (warning)\n", rc));
749	if (RT_SUCCESS(rc))
750	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
751	}
752
753	for (VMCPUID i = 0; i < pVM->cCpus; i++)
754	{
755	RTSemEventDestroy(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
756	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
757	}
758	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
759	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
760	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
761	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
762	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousDone);
763	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
764	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousDoneCaller);
765	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
766	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
767	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
768	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
769	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
770	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
771	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
772	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
773	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
774
775	vmmTermFormatTypes();
776	return rc;
777	}
778
779
780	/**
781	* Applies relocations to data and code managed by this
782	* component. This function will be called at init and
783	* whenever the VMM need to relocate it self inside the GC.
784	*
785	* The VMM will need to apply relocations to the core code.
786	*
787	* @param pVM The cross context VM structure.
788	* @param offDelta The relocation delta.
789	*/
790	VMMR3_INT_DECL(void) VMMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
791	{
792	LogFlow(("VMMR3Relocate: offDelta=%RGv\n", offDelta));
793	RT_NOREF(offDelta);
794
795	/*
796	* Update the logger.
797	*/
798	VMMR3UpdateLoggers(pVM);
799	}
800
801
802	/**
803	* Updates the settings for the RC and R0 loggers.
804	*
805	* @returns VBox status code.
806	* @param pVM The cross context VM structure.
807	*/
808	VMMR3_INT_DECL(int) VMMR3UpdateLoggers(PVM pVM)
809	{
810	int rc = VINF_SUCCESS;
811
812	#ifdef LOG_ENABLED
813	/*
814	* For the ring-0 EMT logger, we use a per-thread logger instance
815	* in ring-0. Only initialize it once.
816	*/
817	PRTLOGGER const pDefault = RTLogDefaultInstance();
818	for (VMCPUID i = 0; i < pVM->cCpus; i++)
819	{
820	PVMCPU pVCpu = pVM->apCpusR3[i];
821	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
822	if (pR0LoggerR3)
823	{
824	if (!pR0LoggerR3->fCreated)
825	{
826	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
827	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
828	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
829
830	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
831	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
832	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
833
834	char szR0ThreadName[16];
835	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", i);
836	rc = RTLogCreateForR0(&pR0LoggerR3->Logger, pR0LoggerR3->cbLogger,
837	pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
838	pfnLoggerWrapper, pfnLoggerFlush,
839	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
840	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
841
842	pR0LoggerR3->idCpu = i;
843	pR0LoggerR3->fCreated = true;
844	pR0LoggerR3->fFlushingDisabled = false;
845	}
846
847	rc = RTLogCopyGroupsAndFlagsForR0(&pR0LoggerR3->Logger, pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
848	pDefault, RTLOGFLAGS_BUFFERED, UINT32_MAX);
849	AssertRC(rc);
850	}
851	}
852	#else
853	RT_NOREF(pVM);
854	#endif
855
856	return rc;
857	}
858
859
860	/**
861	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg1Weak output.
862	*
863	* @returns Pointer to the buffer.
864	* @param pVM The cross context VM structure.
865	*/
866	VMMR3DECL(const char *) VMMR3GetRZAssertMsg1(PVM pVM)
867	{
868	return pVM->vmm.s.szRing0AssertMsg1;
869	}
870
871
872	/**
873	* Returns the VMCPU of the specified virtual CPU.
874	*
875	* @returns The VMCPU pointer. NULL if @a idCpu or @a pUVM is invalid.
876	*
877	* @param pUVM The user mode VM handle.
878	* @param idCpu The ID of the virtual CPU.
879	*/
880	VMMR3DECL(PVMCPU) VMMR3GetCpuByIdU(PUVM pUVM, RTCPUID idCpu)
881	{
882	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
883	AssertReturn(idCpu < pUVM->cCpus, NULL);
884	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, NULL);
885	return pUVM->pVM->apCpusR3[idCpu];
886	}
887
888
889	/**
890	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg2Weak output.
891	*
892	* @returns Pointer to the buffer.
893	* @param pVM The cross context VM structure.
894	*/
895	VMMR3DECL(const char *) VMMR3GetRZAssertMsg2(PVM pVM)
896	{
897	return pVM->vmm.s.szRing0AssertMsg2;
898	}
899
900
901	/**
902	* Execute state save operation.
903	*
904	* @returns VBox status code.
905	* @param pVM The cross context VM structure.
906	* @param pSSM SSM operation handle.
907	*/
908	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM)
909	{
910	LogFlow(("vmmR3Save:\n"));
911
912	/*
913	* Save the started/stopped state of all CPUs except 0 as it will always
914	* be running. This avoids breaking the saved state version. :-)
915	*/
916	for (VMCPUID i = 1; i < pVM->cCpus; i++)
917	SSMR3PutBool(pSSM, VMCPUSTATE_IS_STARTED(VMCPU_GET_STATE(pVM->apCpusR3[i])));
918
919	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
920	}
921
922
923	/**
924	* Execute state load operation.
925	*
926	* @returns VBox status code.
927	* @param pVM The cross context VM structure.
928	* @param pSSM SSM operation handle.
929	* @param uVersion Data layout version.
930	* @param uPass The data pass.
931	*/
932	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
933	{
934	LogFlow(("vmmR3Load:\n"));
935	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
936
937	/*
938	* Validate version.
939	*/
940	if ( uVersion != VMM_SAVED_STATE_VERSION
941	&& uVersion != VMM_SAVED_STATE_VERSION_3_0)
942	{
943	AssertMsgFailed(("vmmR3Load: Invalid version uVersion=%u!\n", uVersion));
944	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
945	}
946
947	if (uVersion <= VMM_SAVED_STATE_VERSION_3_0)
948	{
949	/* Ignore the stack bottom, stack pointer and stack bits. */
950	RTRCPTR RCPtrIgnored;
951	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
952	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
953	#ifdef RT_OS_DARWIN
954	if ( SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(3,0,0)
955	&& SSMR3HandleVersion(pSSM) < VBOX_FULL_VERSION_MAKE(3,1,0)
956	&& SSMR3HandleRevision(pSSM) >= 48858
957	&& ( !strcmp(SSMR3HandleHostOSAndArch(pSSM), "darwin.x86")
958	\|\| !strcmp(SSMR3HandleHostOSAndArch(pSSM), "") )
959	)
960	SSMR3Skip(pSSM, 16384);
961	else
962	SSMR3Skip(pSSM, 8192);
963	#else
964	SSMR3Skip(pSSM, 8192);
965	#endif
966	}
967
968	/*
969	* Restore the VMCPU states. VCPU 0 is always started.
970	*/
971	VMCPU_SET_STATE(pVM->apCpusR3[0], VMCPUSTATE_STARTED);
972	for (VMCPUID i = 1; i < pVM->cCpus; i++)
973	{
974	bool fStarted;
975	int rc = SSMR3GetBool(pSSM, &fStarted);
976	if (RT_FAILURE(rc))
977	return rc;
978	VMCPU_SET_STATE(pVM->apCpusR3[i], fStarted ? VMCPUSTATE_STARTED : VMCPUSTATE_STOPPED);
979	}
980
981	/* terminator */
982	uint32_t u32;
983	int rc = SSMR3GetU32(pSSM, &u32);
984	if (RT_FAILURE(rc))
985	return rc;
986	if (u32 != UINT32_MAX)
987	{
988	AssertMsgFailed(("u32=%#x\n", u32));
989	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
990	}
991	return VINF_SUCCESS;
992	}
993
994
995	/**
996	* Suspends the CPU yielder.
997	*
998	* @param pVM The cross context VM structure.
999	*/
1000	VMMR3_INT_DECL(void) VMMR3YieldSuspend(PVM pVM)
1001	{
1002	#if 0 /* pointless when timers doesn't run on EMT */
1003	VMCPU_ASSERT_EMT(pVM->apCpusR3[0]);
1004	if (!pVM->vmm.s.cYieldResumeMillies)
1005	{
1006	uint64_t u64Now = TMTimerGet(pVM, pVM->vmm.s.hYieldTimer);
1007	uint64_t u64Expire = TMTimerGetExpire(pVM, pVM->vmm.s.hYieldTimer);
1008	if (u64Now >= u64Expire \|\| u64Expire == ~(uint64_t)0)
1009	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1010	else
1011	pVM->vmm.s.cYieldResumeMillies = TMTimerToMilli(pVM, pVM->vmm.s.hYieldTimer, u64Expire - u64Now);
1012	TMTimerStop(pVM, pVM->vmm.s.hYieldTimer);
1013	}
1014	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1015	#else
1016	RT_NOREF(pVM);
1017	#endif
1018	}
1019
1020
1021	/**
1022	* Stops the CPU yielder.
1023	*
1024	* @param pVM The cross context VM structure.
1025	*/
1026	VMMR3_INT_DECL(void) VMMR3YieldStop(PVM pVM)
1027	{
1028	#if 0 /* pointless when timers doesn't run on EMT */
1029	if (!pVM->vmm.s.cYieldResumeMillies)
1030	TMTimerStop(pVM, pVM->vmm.s.hYieldTimer);
1031	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1032	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1033	#else
1034	RT_NOREF(pVM);
1035	#endif
1036	}
1037
1038
1039	/**
1040	* Resumes the CPU yielder when it has been a suspended or stopped.
1041	*
1042	* @param pVM The cross context VM structure.
1043	*/
1044	VMMR3_INT_DECL(void) VMMR3YieldResume(PVM pVM)
1045	{
1046	#if 0 /* pointless when timers doesn't run on EMT */
1047	if (pVM->vmm.s.cYieldResumeMillies)
1048	{
1049	TMTimerSetMillies(pVM, pVM->vmm.s.hYieldTimer, pVM->vmm.s.cYieldResumeMillies);
1050	pVM->vmm.s.cYieldResumeMillies = 0;
1051	}
1052	#else
1053	RT_NOREF(pVM);
1054	#endif
1055	}
1056
1057
1058	#if 0 /* pointless when timers doesn't run on EMT */
1059	/**
1060	* @callback_method_impl{FNTMTIMERINT, EMT yielder}
1061	*
1062	* @todo This is a UNI core/thread thing, really... Should be reconsidered.
1063	*/
1064	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, TMTIMERHANDLE hTimer, void *pvUser)
1065	{
1066	NOREF(pvUser);
1067
1068	/*
1069	* This really needs some careful tuning. While we shouldn't be too greedy since
1070	* that'll cause the rest of the system to stop up, we shouldn't be too nice either
1071	* because that'll cause us to stop up.
1072	*
1073	* The current logic is to use the default interval when there is no lag worth
1074	* mentioning, but when we start accumulating lag we don't bother yielding at all.
1075	*
1076	* (This depends on the TMCLOCK_VIRTUAL_SYNC to be scheduled before TMCLOCK_REAL
1077	* so the lag is up to date.)
1078	*/
1079	const uint64_t u64Lag = TMVirtualSyncGetLag(pVM);
1080	if ( u64Lag < 50000000 /* 50ms */
1081	\|\| ( u64Lag < 1000000000 /* 1s */
1082	&& RTTimeNanoTS() - pVM->vmm.s.u64LastYield < 500000000 /* 500 ms */)
1083	)
1084	{
1085	uint64_t u64Elapsed = RTTimeNanoTS();
1086	pVM->vmm.s.u64LastYield = u64Elapsed;
1087
1088	RTThreadYield();
1089
1090	#ifdef LOG_ENABLED
1091	u64Elapsed = RTTimeNanoTS() - u64Elapsed;
1092	Log(("vmmR3YieldEMT: %RI64 ns\n", u64Elapsed));
1093	#endif
1094	}
1095	TMTimerSetMillies(pVM, hTimer, pVM->vmm.s.cYieldEveryMillies);
1096	}
1097	#endif
1098
1099
1100	/**
1101	* Executes guest code (Intel VT-x and AMD-V).
1102	*
1103	* @param pVM The cross context VM structure.
1104	* @param pVCpu The cross context virtual CPU structure.
1105	*/
1106	VMMR3_INT_DECL(int) VMMR3HmRunGC(PVM pVM, PVMCPU pVCpu)
1107	{
1108	Log2(("VMMR3HmRunGC: (cs:rip=%04x:%RX64)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1109
1110	for (;;)
1111	{
1112	int rc;
1113	do
1114	{
1115	#ifdef NO_SUPCALLR0VMM
1116	rc = VERR_GENERAL_FAILURE;
1117	#else
1118	rc = SUPR3CallVMMR0Fast(VMCC_GET_VMR0_FOR_CALL(pVM), VMMR0_DO_HM_RUN, pVCpu->idCpu);
1119	if (RT_LIKELY(rc == VINF_SUCCESS))
1120	rc = pVCpu->vmm.s.iLastGZRc;
1121	#endif
1122	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
1123
1124	#if 0 /** @todo triggers too often */
1125	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TO_R3));
1126	#endif
1127
1128	/*
1129	* Flush the logs
1130	*/
1131	#ifdef LOG_ENABLED
1132	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1133	#endif
1134	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1135	if (rc != VINF_VMM_CALL_HOST)
1136	{
1137	Log2(("VMMR3HmRunGC: returns %Rrc (cs:rip=%04x:%RX64)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1138	return rc;
1139	}
1140	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1141	if (RT_FAILURE(rc))
1142	return rc;
1143	/* Resume R0 */
1144	}
1145	}
1146
1147
1148	/**
1149	* Perform one of the fast I/O control VMMR0 operation.
1150	*
1151	* @returns VBox strict status code.
1152	* @param pVM The cross context VM structure.
1153	* @param pVCpu The cross context virtual CPU structure.
1154	* @param enmOperation The operation to perform.
1155	*/
1156	VMMR3_INT_DECL(VBOXSTRICTRC) VMMR3CallR0EmtFast(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation)
1157	{
1158	for (;;)
1159	{
1160	VBOXSTRICTRC rcStrict;
1161	do
1162	{
1163	#ifdef NO_SUPCALLR0VMM
1164	rcStrict = VERR_GENERAL_FAILURE;
1165	#else
1166	rcStrict = SUPR3CallVMMR0Fast(VMCC_GET_VMR0_FOR_CALL(pVM), enmOperation, pVCpu->idCpu);
1167	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
1168	rcStrict = pVCpu->vmm.s.iLastGZRc;
1169	#endif
1170	} while (rcStrict == VINF_EM_RAW_INTERRUPT_HYPER);
1171
1172	/*
1173	* Flush the logs
1174	*/
1175	#ifdef LOG_ENABLED
1176	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1177	#endif
1178	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1179	if (rcStrict != VINF_VMM_CALL_HOST)
1180	return rcStrict;
1181	int rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1182	if (RT_FAILURE(rc))
1183	return rc;
1184	/* Resume R0 */
1185	}
1186	}
1187
1188
1189	/**
1190	* VCPU worker for VMMR3SendStartupIpi.
1191	*
1192	* @param pVM The cross context VM structure.
1193	* @param idCpu Virtual CPU to perform SIPI on.
1194	* @param uVector The SIPI vector.
1195	*/
1196	static DECLCALLBACK(int) vmmR3SendStarupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1197	{
1198	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1199	VMCPU_ASSERT_EMT(pVCpu);
1200
1201	/*
1202	* In the INIT state, the target CPU is only responsive to an SIPI.
1203	* This is also true for when when the CPU is in VMX non-root mode.
1204	*
1205	* See AMD spec. 16.5 "Interprocessor Interrupts (IPI)".
1206	* See Intel spec. 26.6.2 "Activity State".
1207	*/
1208	if (EMGetState(pVCpu) != EMSTATE_WAIT_SIPI)
1209	return VINF_SUCCESS;
1210
1211	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1212	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1213	if (CPUMIsGuestInVmxRootMode(pCtx))
1214	{
1215	/* If the CPU is in VMX non-root mode we must cause a VM-exit. */
1216	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1217	return VBOXSTRICTRC_TODO(IEMExecVmxVmexitStartupIpi(pVCpu, uVector));
1218
1219	/* If the CPU is in VMX root mode (and not in VMX non-root mode) SIPIs are blocked. */
1220	return VINF_SUCCESS;
1221	}
1222	#endif
1223
1224	pCtx->cs.Sel = uVector << 8;
1225	pCtx->cs.ValidSel = uVector << 8;
1226	pCtx->cs.fFlags = CPUMSELREG_FLAGS_VALID;
1227	pCtx->cs.u64Base = uVector << 12;
1228	pCtx->cs.u32Limit = UINT32_C(0x0000ffff);
1229	pCtx->rip = 0;
1230
1231	Log(("vmmR3SendSipi for VCPU %d with vector %x\n", idCpu, uVector));
1232
1233	# if 1 /* If we keep the EMSTATE_WAIT_SIPI method, then move this to EM.cpp. */
1234	EMSetState(pVCpu, EMSTATE_HALTED);
1235	return VINF_EM_RESCHEDULE;
1236	# else /* And if we go the VMCPU::enmState way it can stay here. */
1237	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STOPPED);
1238	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1239	return VINF_SUCCESS;
1240	# endif
1241	}
1242
1243
1244	/**
1245	* VCPU worker for VMMR3SendInitIpi.
1246	*
1247	* @returns VBox status code.
1248	* @param pVM The cross context VM structure.
1249	* @param idCpu Virtual CPU to perform SIPI on.
1250	*/
1251	static DECLCALLBACK(int) vmmR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1252	{
1253	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1254	VMCPU_ASSERT_EMT(pVCpu);
1255
1256	Log(("vmmR3SendInitIpi for VCPU %d\n", idCpu));
1257
1258	/** @todo r=ramshankar: We should probably block INIT signal when the CPU is in
1259	* wait-for-SIPI state. Verify. */
1260
1261	/* If the CPU is in VMX non-root mode, INIT signals cause VM-exits. */
1262	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1263	PCCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1264	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1265	return VBOXSTRICTRC_TODO(IEMExecVmxVmexit(pVCpu, VMX_EXIT_INIT_SIGNAL, 0 /* uExitQual */));
1266	#endif
1267
1268	/** @todo Figure out how to handle a SVM nested-guest intercepts here for INIT
1269	* IPI (e.g. SVM_EXIT_INIT). */
1270
1271	PGMR3ResetCpu(pVM, pVCpu);
1272	PDMR3ResetCpu(pVCpu); /* Only clears pending interrupts force flags */
1273	APICR3InitIpi(pVCpu);
1274	TRPMR3ResetCpu(pVCpu);
1275	CPUMR3ResetCpu(pVM, pVCpu);
1276	EMR3ResetCpu(pVCpu);
1277	HMR3ResetCpu(pVCpu);
1278	NEMR3ResetCpu(pVCpu, true /fInitIpi/);
1279
1280	/* This will trickle up on the target EMT. */
1281	return VINF_EM_WAIT_SIPI;
1282	}
1283
1284
1285	/**
1286	* Sends a Startup IPI to the virtual CPU by setting CS:EIP into
1287	* vector-dependent state and unhalting processor.
1288	*
1289	* @param pVM The cross context VM structure.
1290	* @param idCpu Virtual CPU to perform SIPI on.
1291	* @param uVector SIPI vector.
1292	*/
1293	VMMR3_INT_DECL(void) VMMR3SendStartupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1294	{
1295	AssertReturnVoid(idCpu < pVM->cCpus);
1296
1297	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendStarupIpi, 3, pVM, idCpu, uVector);
1298	AssertRC(rc);
1299	}
1300
1301
1302	/**
1303	* Sends init IPI to the virtual CPU.
1304	*
1305	* @param pVM The cross context VM structure.
1306	* @param idCpu Virtual CPU to perform int IPI on.
1307	*/
1308	VMMR3_INT_DECL(void) VMMR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1309	{
1310	AssertReturnVoid(idCpu < pVM->cCpus);
1311
1312	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendInitIpi, 2, pVM, idCpu);
1313	AssertRC(rc);
1314	}
1315
1316
1317	/**
1318	* Registers the guest memory range that can be used for patching.
1319	*
1320	* @returns VBox status code.
1321	* @param pVM The cross context VM structure.
1322	* @param pPatchMem Patch memory range.
1323	* @param cbPatchMem Size of the memory range.
1324	*/
1325	VMMR3DECL(int) VMMR3RegisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1326	{
1327	VM_ASSERT_EMT(pVM);
1328	if (HMIsEnabled(pVM))
1329	return HMR3EnablePatching(pVM, pPatchMem, cbPatchMem);
1330
1331	return VERR_NOT_SUPPORTED;
1332	}
1333
1334
1335	/**
1336	* Deregisters the guest memory range that can be used for patching.
1337	*
1338	* @returns VBox status code.
1339	* @param pVM The cross context VM structure.
1340	* @param pPatchMem Patch memory range.
1341	* @param cbPatchMem Size of the memory range.
1342	*/
1343	VMMR3DECL(int) VMMR3DeregisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1344	{
1345	if (HMIsEnabled(pVM))
1346	return HMR3DisablePatching(pVM, pPatchMem, cbPatchMem);
1347
1348	return VINF_SUCCESS;
1349	}
1350
1351
1352	/**
1353	* Common recursion handler for the other EMTs.
1354	*
1355	* @returns Strict VBox status code.
1356	* @param pVM The cross context VM structure.
1357	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1358	* @param rcStrict Current status code to be combined with the one
1359	* from this recursion and returned.
1360	*/
1361	static VBOXSTRICTRC vmmR3EmtRendezvousCommonRecursion(PVM pVM, PVMCPU pVCpu, VBOXSTRICTRC rcStrict)
1362	{
1363	int rc2;
1364
1365	/*
1366	* We wait here while the initiator of this recursion reconfigures
1367	* everything. The last EMT to get in signals the initiator.
1368	*/
1369	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) == pVM->cCpus)
1370	{
1371	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1372	AssertLogRelRC(rc2);
1373	}
1374
1375	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPush, RT_INDEFINITE_WAIT);
1376	AssertLogRelRC(rc2);
1377
1378	/*
1379	* Do the normal rendezvous processing.
1380	*/
1381	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1382	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1383
1384	/*
1385	* Wait for the initiator to restore everything.
1386	*/
1387	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPop, RT_INDEFINITE_WAIT);
1388	AssertLogRelRC(rc2);
1389
1390	/*
1391	* Last thread out of here signals the initiator.
1392	*/
1393	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) == pVM->cCpus)
1394	{
1395	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1396	AssertLogRelRC(rc2);
1397	}
1398
1399	/*
1400	* Merge status codes and return.
1401	*/
1402	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
1403	if ( rcStrict2 != VINF_SUCCESS
1404	&& ( rcStrict == VINF_SUCCESS
1405	\|\| rcStrict > rcStrict2))
1406	rcStrict = rcStrict2;
1407	return rcStrict;
1408	}
1409
1410
1411	/**
1412	* Count returns and have the last non-caller EMT wake up the caller.
1413	*
1414	* @returns VBox strict informational status code for EM scheduling. No failures
1415	* will be returned here, those are for the caller only.
1416	*
1417	* @param pVM The cross context VM structure.
1418	* @param rcStrict The current accumulated recursive status code,
1419	* to be merged with i32RendezvousStatus and
1420	* returned.
1421	*/
1422	DECL_FORCE_INLINE(VBOXSTRICTRC) vmmR3EmtRendezvousNonCallerReturn(PVM pVM, VBOXSTRICTRC rcStrict)
1423	{
1424	VBOXSTRICTRC rcStrict2 = ASMAtomicReadS32(&pVM->vmm.s.i32RendezvousStatus);
1425
1426	uint32_t cReturned = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsReturned);
1427	if (cReturned == pVM->cCpus - 1U)
1428	{
1429	int rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1430	AssertLogRelRC(rc);
1431	}
1432
1433	/*
1434	* Merge the status codes, ignoring error statuses in this code path.
1435	*/
1436	AssertLogRelMsgReturn( rcStrict2 <= VINF_SUCCESS
1437	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1438	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)),
1439	VERR_IPE_UNEXPECTED_INFO_STATUS);
1440
1441	if (RT_SUCCESS(rcStrict2))
1442	{
1443	if ( rcStrict2 != VINF_SUCCESS
1444	&& ( rcStrict == VINF_SUCCESS
1445	\|\| rcStrict > rcStrict2))
1446	rcStrict = rcStrict2;
1447	}
1448	return rcStrict;
1449	}
1450
1451
1452	/**
1453	* Common worker for VMMR3EmtRendezvous and VMMR3EmtRendezvousFF.
1454	*
1455	* @returns VBox strict informational status code for EM scheduling. No failures
1456	* will be returned here, those are for the caller only. When
1457	* fIsCaller is set, VINF_SUCCESS is always returned.
1458	*
1459	* @param pVM The cross context VM structure.
1460	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1461	* @param fIsCaller Whether we're the VMMR3EmtRendezvous caller or
1462	* not.
1463	* @param fFlags The flags.
1464	* @param pfnRendezvous The callback.
1465	* @param pvUser The user argument for the callback.
1466	*/
1467	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
1468	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1469	{
1470	int rc;
1471	VBOXSTRICTRC rcStrictRecursion = VINF_SUCCESS;
1472
1473	/*
1474	* Enter, the last EMT triggers the next callback phase.
1475	*/
1476	uint32_t cEntered = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsEntered);
1477	if (cEntered != pVM->cCpus)
1478	{
1479	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1480	{
1481	/* Wait for our turn. */
1482	for (;;)
1483	{
1484	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, RT_INDEFINITE_WAIT);
1485	AssertLogRelRC(rc);
1486	if (!pVM->vmm.s.fRendezvousRecursion)
1487	break;
1488	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1489	}
1490	}
1491	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1492	{
1493	/* Wait for the last EMT to arrive and wake everyone up. */
1494	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce, RT_INDEFINITE_WAIT);
1495	AssertLogRelRC(rc);
1496	Assert(!pVM->vmm.s.fRendezvousRecursion);
1497	}
1498	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1499	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1500	{
1501	/* Wait for our turn. */
1502	for (;;)
1503	{
1504	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1505	AssertLogRelRC(rc);
1506	if (!pVM->vmm.s.fRendezvousRecursion)
1507	break;
1508	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1509	}
1510	}
1511	else
1512	{
1513	Assert((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE);
1514
1515	/*
1516	* The execute once is handled specially to optimize the code flow.
1517	*
1518	* The last EMT to arrive will perform the callback and the other
1519	* EMTs will wait on the Done/DoneCaller semaphores (instead of
1520	* the EnterOneByOne/AllAtOnce) in the meanwhile. When the callback
1521	* returns, that EMT will initiate the normal return sequence.
1522	*/
1523	if (!fIsCaller)
1524	{
1525	for (;;)
1526	{
1527	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1528	AssertLogRelRC(rc);
1529	if (!pVM->vmm.s.fRendezvousRecursion)
1530	break;
1531	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1532	}
1533
1534	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1535	}
1536	return VINF_SUCCESS;
1537	}
1538	}
1539	else
1540	{
1541	/*
1542	* All EMTs are waiting, clear the FF and take action according to the
1543	* execution method.
1544	*/
1545	VM_FF_CLEAR(pVM, VM_FF_EMT_RENDEZVOUS);
1546
1547	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1548	{
1549	/* Wake up everyone. */
1550	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
1551	AssertLogRelRC(rc);
1552	}
1553	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1554	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1555	{
1556	/* Figure out who to wake up and wake it up. If it's ourself, then
1557	it's easy otherwise wait for our turn. */
1558	VMCPUID iFirst = (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1559	? 0
1560	: pVM->cCpus - 1U;
1561	if (pVCpu->idCpu != iFirst)
1562	{
1563	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iFirst]);
1564	AssertLogRelRC(rc);
1565	for (;;)
1566	{
1567	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1568	AssertLogRelRC(rc);
1569	if (!pVM->vmm.s.fRendezvousRecursion)
1570	break;
1571	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1572	}
1573	}
1574	}
1575	/* else: execute the handler on the current EMT and wake up one or more threads afterwards. */
1576	}
1577
1578
1579	/*
1580	* Do the callback and update the status if necessary.
1581	*/
1582	if ( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1583	\|\| RT_SUCCESS(ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus)) )
1584	{
1585	VBOXSTRICTRC rcStrict2 = pfnRendezvous(pVM, pVCpu, pvUser);
1586	if (rcStrict2 != VINF_SUCCESS)
1587	{
1588	AssertLogRelMsg( rcStrict2 <= VINF_SUCCESS
1589	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1590	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)));
1591	int32_t i32RendezvousStatus;
1592	do
1593	{
1594	i32RendezvousStatus = ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus);
1595	if ( rcStrict2 == i32RendezvousStatus
1596	\|\| RT_FAILURE(i32RendezvousStatus)
1597	\|\| ( i32RendezvousStatus != VINF_SUCCESS
1598	&& rcStrict2 > i32RendezvousStatus))
1599	break;
1600	} while (!ASMAtomicCmpXchgS32(&pVM->vmm.s.i32RendezvousStatus, VBOXSTRICTRC_VAL(rcStrict2), i32RendezvousStatus));
1601	}
1602	}
1603
1604	/*
1605	* Increment the done counter and take action depending on whether we're
1606	* the last to finish callback execution.
1607	*/
1608	uint32_t cDone = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsDone);
1609	if ( cDone != pVM->cCpus
1610	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE)
1611	{
1612	/* Signal the next EMT? */
1613	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1614	{
1615	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1616	AssertLogRelRC(rc);
1617	}
1618	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1619	{
1620	Assert(cDone == pVCpu->idCpu + 1U);
1621	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu + 1U]);
1622	AssertLogRelRC(rc);
1623	}
1624	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1625	{
1626	Assert(pVM->cCpus - cDone == pVCpu->idCpu);
1627	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVM->cCpus - cDone - 1U]);
1628	AssertLogRelRC(rc);
1629	}
1630
1631	/* Wait for the rest to finish (the caller waits on hEvtRendezvousDoneCaller). */
1632	if (!fIsCaller)
1633	{
1634	for (;;)
1635	{
1636	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1637	AssertLogRelRC(rc);
1638	if (!pVM->vmm.s.fRendezvousRecursion)
1639	break;
1640	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1641	}
1642	}
1643	}
1644	else
1645	{
1646	/* Callback execution is all done, tell the rest to return. */
1647	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1648	AssertLogRelRC(rc);
1649	}
1650
1651	if (!fIsCaller)
1652	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1653	return rcStrictRecursion;
1654	}
1655
1656
1657	/**
1658	* Called in response to VM_FF_EMT_RENDEZVOUS.
1659	*
1660	* @returns VBox strict status code - EM scheduling. No errors will be returned
1661	* here, nor will any non-EM scheduling status codes be returned.
1662	*
1663	* @param pVM The cross context VM structure.
1664	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1665	*
1666	* @thread EMT
1667	*/
1668	VMMR3_INT_DECL(int) VMMR3EmtRendezvousFF(PVM pVM, PVMCPU pVCpu)
1669	{
1670	Assert(!pVCpu->vmm.s.fInRendezvous);
1671	Log(("VMMR3EmtRendezvousFF: EMT%#u\n", pVCpu->idCpu));
1672	pVCpu->vmm.s.fInRendezvous = true;
1673	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1674	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1675	pVCpu->vmm.s.fInRendezvous = false;
1676	Log(("VMMR3EmtRendezvousFF: EMT%#u returns %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
1677	return VBOXSTRICTRC_TODO(rcStrict);
1678	}
1679
1680
1681	/**
1682	* Helper for resetting an single wakeup event sempahore.
1683	*
1684	* @returns VERR_TIMEOUT on success, RTSemEventWait status otherwise.
1685	* @param hEvt The event semaphore to reset.
1686	*/
1687	static int vmmR3HlpResetEvent(RTSEMEVENT hEvt)
1688	{
1689	for (uint32_t cLoops = 0; ; cLoops++)
1690	{
1691	int rc = RTSemEventWait(hEvt, 0 /cMsTimeout/);
1692	if (rc != VINF_SUCCESS \|\| cLoops > _4K)
1693	return rc;
1694	}
1695	}
1696
1697
1698	/**
1699	* Worker for VMMR3EmtRendezvous that handles recursion.
1700	*
1701	* @returns VBox strict status code. This will be the first error,
1702	* VINF_SUCCESS, or an EM scheduling status code.
1703	*
1704	* @param pVM The cross context VM structure.
1705	* @param pVCpu The cross context virtual CPU structure of the
1706	* calling EMT.
1707	* @param fFlags Flags indicating execution methods. See
1708	* grp_VMMR3EmtRendezvous_fFlags.
1709	* @param pfnRendezvous The callback.
1710	* @param pvUser User argument for the callback.
1711	*
1712	* @thread EMT(pVCpu)
1713	*/
1714	static VBOXSTRICTRC vmmR3EmtRendezvousRecursive(PVM pVM, PVMCPU pVCpu, uint32_t fFlags,
1715	PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1716	{
1717	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d\n", fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions));
1718	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1719	Assert(pVCpu->vmm.s.fInRendezvous);
1720
1721	/*
1722	* Save the current state.
1723	*/
1724	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1725	uint32_t const cParentDone = pVM->vmm.s.cRendezvousEmtsDone;
1726	int32_t const iParentStatus = pVM->vmm.s.i32RendezvousStatus;
1727	PFNVMMEMTRENDEZVOUS const pfnParent = pVM->vmm.s.pfnRendezvous;
1728	void * const pvParentUser = pVM->vmm.s.pvRendezvousUser;
1729
1730	/*
1731	* Check preconditions and save the current state.
1732	*/
1733	AssertReturn( (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1734	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1735	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1736	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1737	VERR_INTERNAL_ERROR);
1738	AssertReturn(pVM->vmm.s.cRendezvousEmtsEntered == pVM->cCpus, VERR_INTERNAL_ERROR_2);
1739	AssertReturn(pVM->vmm.s.cRendezvousEmtsReturned == 0, VERR_INTERNAL_ERROR_3);
1740
1741	/*
1742	* Reset the recursion prep and pop semaphores.
1743	*/
1744	int rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1745	AssertLogRelRCReturn(rc, rc);
1746	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1747	AssertLogRelRCReturn(rc, rc);
1748	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1749	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1750	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1751	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1752
1753	/*
1754	* Usher the other thread into the recursion routine.
1755	*/
1756	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush, 0);
1757	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, true);
1758
1759	uint32_t cLeft = pVM->cCpus - (cParentDone + 1U);
1760	if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1761	while (cLeft-- > 0)
1762	{
1763	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1764	AssertLogRelRC(rc);
1765	}
1766	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1767	{
1768	Assert(cLeft == pVM->cCpus - (pVCpu->idCpu + 1U));
1769	for (VMCPUID iCpu = pVCpu->idCpu + 1U; iCpu < pVM->cCpus; iCpu++)
1770	{
1771	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu]);
1772	AssertLogRelRC(rc);
1773	}
1774	}
1775	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1776	{
1777	Assert(cLeft == pVCpu->idCpu);
1778	for (VMCPUID iCpu = pVCpu->idCpu; iCpu > 0; iCpu--)
1779	{
1780	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu - 1U]);
1781	AssertLogRelRC(rc);
1782	}
1783	}
1784	else
1785	AssertLogRelReturn((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1786	VERR_INTERNAL_ERROR_4);
1787
1788	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1789	AssertLogRelRC(rc);
1790	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1791	AssertLogRelRC(rc);
1792
1793
1794	/*
1795	* Wait for the EMTs to wake up and get out of the parent rendezvous code.
1796	*/
1797	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) != pVM->cCpus)
1798	{
1799	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPushCaller, RT_INDEFINITE_WAIT);
1800	AssertLogRelRC(rc);
1801	}
1802
1803	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, false);
1804
1805	/*
1806	* Clear the slate and setup the new rendezvous.
1807	*/
1808	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1809	{
1810	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1811	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1812	}
1813	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1814	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1815	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1816	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1817
1818	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
1819	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
1820	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1821	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
1822	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
1823	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
1824	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
1825	ASMAtomicIncU32(&pVM->vmm.s.cRendezvousRecursions);
1826
1827	/*
1828	* We're ready to go now, do normal rendezvous processing.
1829	*/
1830	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1831	AssertLogRelRC(rc);
1832
1833	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /fIsCaller/, fFlags, pfnRendezvous, pvUser);
1834
1835	/*
1836	* The caller waits for the other EMTs to be done, return and waiting on the
1837	* pop semaphore.
1838	*/
1839	for (;;)
1840	{
1841	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
1842	AssertLogRelRC(rc);
1843	if (!pVM->vmm.s.fRendezvousRecursion)
1844	break;
1845	rcStrict = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict);
1846	}
1847
1848	/*
1849	* Get the return code and merge it with the above recursion status.
1850	*/
1851	VBOXSTRICTRC rcStrict2 = pVM->vmm.s.i32RendezvousStatus;
1852	if ( rcStrict2 != VINF_SUCCESS
1853	&& ( rcStrict == VINF_SUCCESS
1854	\|\| rcStrict > rcStrict2))
1855	rcStrict = rcStrict2;
1856
1857	/*
1858	* Restore the parent rendezvous state.
1859	*/
1860	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1861	{
1862	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1863	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1864	}
1865	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1866	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1867	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1868	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1869
1870	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, pVM->cCpus);
1871	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1872	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, cParentDone);
1873	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, iParentStatus);
1874	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fParentFlags);
1875	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvParentUser);
1876	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnParent);
1877
1878	/*
1879	* Usher the other EMTs back to their parent recursion routine, waiting
1880	* for them to all get there before we return (makes sure they've been
1881	* scheduled and are past the pop event sem, see below).
1882	*/
1883	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop, 0);
1884	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1885	AssertLogRelRC(rc);
1886
1887	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) != pVM->cCpus)
1888	{
1889	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPopCaller, RT_INDEFINITE_WAIT);
1890	AssertLogRelRC(rc);
1891	}
1892
1893	/*
1894	* We must reset the pop semaphore on the way out (doing the pop caller too,
1895	* just in case). The parent may be another recursion.
1896	*/
1897	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop); AssertLogRelRC(rc);
1898	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1899
1900	ASMAtomicDecU32(&pVM->vmm.s.cRendezvousRecursions);
1901
1902	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d returns %Rrc\n",
1903	fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions, VBOXSTRICTRC_VAL(rcStrict)));
1904	return rcStrict;
1905	}
1906
1907
1908	/**
1909	* EMT rendezvous.
1910	*
1911	* Gathers all the EMTs and execute some code on each of them, either in a one
1912	* by one fashion or all at once.
1913	*
1914	* @returns VBox strict status code. This will be the first error,
1915	* VINF_SUCCESS, or an EM scheduling status code.
1916	*
1917	* @retval VERR_DEADLOCK if recursion is attempted using a rendezvous type that
1918	* doesn't support it or if the recursion is too deep.
1919	*
1920	* @param pVM The cross context VM structure.
1921	* @param fFlags Flags indicating execution methods. See
1922	* grp_VMMR3EmtRendezvous_fFlags. The one-by-one,
1923	* descending and ascending rendezvous types support
1924	* recursion from inside @a pfnRendezvous.
1925	* @param pfnRendezvous The callback.
1926	* @param pvUser User argument for the callback.
1927	*
1928	* @thread Any.
1929	*/
1930	VMMR3DECL(int) VMMR3EmtRendezvous(PVM pVM, uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1931	{
1932	/*
1933	* Validate input.
1934	*/
1935	AssertReturn(pVM, VERR_INVALID_VM_HANDLE);
1936	AssertMsg( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_INVALID
1937	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) <= VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1938	&& !(fFlags & ~VMMEMTRENDEZVOUS_FLAGS_VALID_MASK), ("%#x\n", fFlags));
1939	AssertMsg( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1940	\|\| ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE
1941	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE),
1942	("type %u\n", fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK));
1943
1944	VBOXSTRICTRC rcStrict;
1945	PVMCPU pVCpu = VMMGetCpu(pVM);
1946	if (!pVCpu)
1947	{
1948	/*
1949	* Forward the request to an EMT thread.
1950	*/
1951	Log(("VMMR3EmtRendezvous: %#x non-EMT\n", fFlags));
1952	if (!(fFlags & VMMEMTRENDEZVOUS_FLAGS_PRIORITY))
1953	rcStrict = VMR3ReqCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1954	else
1955	rcStrict = VMR3ReqPriorityCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1956	Log(("VMMR3EmtRendezvous: %#x non-EMT returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1957	}
1958	else if ( pVM->cCpus == 1
1959	\|\| ( pVM->enmVMState == VMSTATE_DESTROYING
1960	&& VMR3GetActiveEmts(pVM->pUVM) < pVM->cCpus ) )
1961	{
1962	/*
1963	* Shortcut for the single EMT case.
1964	*
1965	* We also ends up here if EMT(0) (or others) tries to issue a rendezvous
1966	* during vmR3Destroy after other emulation threads have started terminating.
1967	*/
1968	if (!pVCpu->vmm.s.fInRendezvous)
1969	{
1970	Log(("VMMR3EmtRendezvous: %#x EMT (uni)\n", fFlags));
1971	pVCpu->vmm.s.fInRendezvous = true;
1972	pVM->vmm.s.fRendezvousFlags = fFlags;
1973	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1974	pVCpu->vmm.s.fInRendezvous = false;
1975	}
1976	else
1977	{
1978	/* Recursion. Do the same checks as in the SMP case. */
1979	Log(("VMMR3EmtRendezvous: %#x EMT (uni), recursion depth=%d\n", fFlags, pVM->vmm.s.cRendezvousRecursions));
1980	uint32_t fType = pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK;
1981	AssertLogRelReturn( !pVCpu->vmm.s.fInRendezvous
1982	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1983	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1984	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1985	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
1986	, VERR_DEADLOCK);
1987
1988	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1989	pVM->vmm.s.cRendezvousRecursions++;
1990	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1991	pVM->vmm.s.fRendezvousFlags = fFlags;
1992
1993	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1994
1995	pVM->vmm.s.fRendezvousFlags = fParentFlags;
1996	pVM->vmm.s.cRendezvousRecursions--;
1997	}
1998	Log(("VMMR3EmtRendezvous: %#x EMT (uni) returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1999	}
2000	else
2001	{
2002	/*
2003	* Spin lock. If busy, check for recursion, if not recursing wait for
2004	* the other EMT to finish while keeping a lookout for the RENDEZVOUS FF.
2005	*/
2006	int rc;
2007	rcStrict = VINF_SUCCESS;
2008	if (RT_UNLIKELY(!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0)))
2009	{
2010	/* Allow recursion in some cases. */
2011	if ( pVCpu->vmm.s.fInRendezvous
2012	&& ( (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2013	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2014	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2015	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
2016	))
2017	return VBOXSTRICTRC_TODO(vmmR3EmtRendezvousRecursive(pVM, pVCpu, fFlags, pfnRendezvous, pvUser));
2018
2019	AssertLogRelMsgReturn(!pVCpu->vmm.s.fInRendezvous, ("fRendezvousFlags=%#x\n", pVM->vmm.s.fRendezvousFlags),
2020	VERR_DEADLOCK);
2021
2022	Log(("VMMR3EmtRendezvous: %#x EMT#%u, waiting for lock...\n", fFlags, pVCpu->idCpu));
2023	while (!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0))
2024	{
2025	if (VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS))
2026	{
2027	rc = VMMR3EmtRendezvousFF(pVM, pVCpu);
2028	if ( rc != VINF_SUCCESS
2029	&& ( rcStrict == VINF_SUCCESS
2030	\|\| rcStrict > rc))
2031	rcStrict = rc;
2032	/** @todo Perhaps deal with termination here? */
2033	}
2034	ASMNopPause();
2035	}
2036	}
2037
2038	Log(("VMMR3EmtRendezvous: %#x EMT#%u\n", fFlags, pVCpu->idCpu));
2039	Assert(!VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS));
2040	Assert(!pVCpu->vmm.s.fInRendezvous);
2041	pVCpu->vmm.s.fInRendezvous = true;
2042
2043	/*
2044	* Clear the slate and setup the rendezvous. This is a semaphore ping-pong orgy. :-)
2045	*/
2046	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2047	{
2048	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i], 0);
2049	AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2050	}
2051	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2052	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2053	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2054	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2055	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
2056	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
2057	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2058	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
2059	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
2060	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
2061	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
2062
2063	/*
2064	* Set the FF and poke the other EMTs.
2065	*/
2066	VM_FF_SET(pVM, VM_FF_EMT_RENDEZVOUS);
2067	VMR3NotifyGlobalFFU(pVM->pUVM, VMNOTIFYFF_FLAGS_POKE);
2068
2069	/*
2070	* Do the same ourselves.
2071	*/
2072	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /* fIsCaller */, fFlags, pfnRendezvous, pvUser);
2073
2074	/*
2075	* The caller waits for the other EMTs to be done and return before doing
2076	* the cleanup. This makes away with wakeup / reset races we would otherwise
2077	* risk in the multiple release event semaphore code (hEvtRendezvousDoneCaller).
2078	*/
2079	for (;;)
2080	{
2081	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
2082	AssertLogRelRC(rc);
2083	if (!pVM->vmm.s.fRendezvousRecursion)
2084	break;
2085	rcStrict2 = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict2);
2086	}
2087
2088	/*
2089	* Get the return code and clean up a little bit.
2090	*/
2091	VBOXSTRICTRC rcStrict3 = pVM->vmm.s.i32RendezvousStatus;
2092	ASMAtomicWriteNullPtr((void * volatile *)&pVM->vmm.s.pfnRendezvous);
2093
2094	ASMAtomicWriteU32(&pVM->vmm.s.u32RendezvousLock, 0);
2095	pVCpu->vmm.s.fInRendezvous = false;
2096
2097	/*
2098	* Merge rcStrict, rcStrict2 and rcStrict3.
2099	*/
2100	AssertRC(VBOXSTRICTRC_VAL(rcStrict));
2101	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
2102	if ( rcStrict2 != VINF_SUCCESS
2103	&& ( rcStrict == VINF_SUCCESS
2104	\|\| rcStrict > rcStrict2))
2105	rcStrict = rcStrict2;
2106	if ( rcStrict3 != VINF_SUCCESS
2107	&& ( rcStrict == VINF_SUCCESS
2108	\|\| rcStrict > rcStrict3))
2109	rcStrict = rcStrict3;
2110	Log(("VMMR3EmtRendezvous: %#x EMT#%u returns %Rrc\n", fFlags, pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
2111	}
2112
2113	AssertLogRelMsgReturn( rcStrict <= VINF_SUCCESS
2114	\|\| (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST),
2115	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
2116	VERR_IPE_UNEXPECTED_INFO_STATUS);
2117	return VBOXSTRICTRC_VAL(rcStrict);
2118	}
2119
2120
2121	/**
2122	* Interface for vmR3SetHaltMethodU.
2123	*
2124	* @param pVCpu The cross context virtual CPU structure of the
2125	* calling EMT.
2126	* @param fMayHaltInRing0 The new state.
2127	* @param cNsSpinBlockThreshold The spin-vs-blocking threashold.
2128	* @thread EMT(pVCpu)
2129	*
2130	* @todo Move the EMT handling to VMM (or EM). I soooooo regret that VM
2131	* component.
2132	*/
2133	VMMR3_INT_DECL(void) VMMR3SetMayHaltInRing0(PVMCPU pVCpu, bool fMayHaltInRing0, uint32_t cNsSpinBlockThreshold)
2134	{
2135	pVCpu->vmm.s.fMayHaltInRing0 = fMayHaltInRing0;
2136	pVCpu->vmm.s.cNsSpinBlockThreshold = cNsSpinBlockThreshold;
2137	}
2138
2139
2140	/**
2141	* Read from the ring 0 jump buffer stack.
2142	*
2143	* @returns VBox status code.
2144	*
2145	* @param pVM The cross context VM structure.
2146	* @param idCpu The ID of the source CPU context (for the address).
2147	* @param R0Addr Where to start reading.
2148	* @param pvBuf Where to store the data we've read.
2149	* @param cbRead The number of bytes to read.
2150	*/
2151	VMMR3_INT_DECL(int) VMMR3ReadR0Stack(PVM pVM, VMCPUID idCpu, RTHCUINTPTR R0Addr, void *pvBuf, size_t cbRead)
2152	{
2153	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
2154	AssertReturn(pVCpu, VERR_INVALID_PARAMETER);
2155	AssertReturn(cbRead < ~(size_t)0 / 2, VERR_INVALID_PARAMETER);
2156
2157	int rc;
2158	#ifdef VMM_R0_SWITCH_STACK
2159	RTHCUINTPTR off = R0Addr - MMHyperCCToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
2160	#else
2161	RTHCUINTPTR off = pVCpu->vmm.s.CallRing3JmpBufR0.cbSavedStack - (pVCpu->vmm.s.CallRing3JmpBufR0.SpCheck - R0Addr);
2162	#endif
2163	if ( off < VMM_STACK_SIZE
2164	&& off + cbRead <= VMM_STACK_SIZE)
2165	{
2166	memcpy(pvBuf, &pVCpu->vmm.s.pbEMTStackR3[off], cbRead);
2167	rc = VINF_SUCCESS;
2168	}
2169	else
2170	rc = VERR_INVALID_POINTER;
2171
2172	/* Supply the setjmp return RIP/EIP. */
2173	if ( pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation + sizeof(RTR0UINTPTR) > R0Addr
2174	&& pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation < R0Addr + cbRead)
2175	{
2176	uint8_t const pbSrc = (uint8_t const )&pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue;
2177	size_t cbSrc = sizeof(pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue);
2178	size_t offDst = 0;
2179	if (R0Addr < pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2180	offDst = pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation - R0Addr;
2181	else if (R0Addr > pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2182	{
2183	size_t offSrc = R0Addr - pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation;
2184	Assert(offSrc < cbSrc);
2185	pbSrc -= offSrc;
2186	cbSrc -= offSrc;
2187	}
2188	if (cbSrc > cbRead - offDst)
2189	cbSrc = cbRead - offDst;
2190	memcpy((uint8_t *)pvBuf + offDst, pbSrc, cbSrc);
2191
2192	if (cbSrc == cbRead)
2193	rc = VINF_SUCCESS;
2194	}
2195
2196	return rc;
2197	}
2198
2199
2200	/**
2201	* Used by the DBGF stack unwinder to initialize the register state.
2202	*
2203	* @param pUVM The user mode VM handle.
2204	* @param idCpu The ID of the CPU being unwound.
2205	* @param pState The unwind state to initialize.
2206	*/
2207	VMMR3_INT_DECL(void) VMMR3InitR0StackUnwindState(PUVM pUVM, VMCPUID idCpu, struct RTDBGUNWINDSTATE *pState)
2208	{
2209	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, idCpu);
2210	AssertReturnVoid(pVCpu);
2211
2212	/*
2213	* Locate the resume point on the stack.
2214	*/
2215	#ifdef VMM_R0_SWITCH_STACK
2216	uintptr_t off = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume - MMHyperCCToR0(pVCpu->pVMR3, pVCpu->vmm.s.pbEMTStackR3);
2217	AssertReturnVoid(off < VMM_STACK_SIZE);
2218	#else
2219	uintptr_t off = 0;
2220	#endif
2221
2222	#ifdef RT_ARCH_AMD64
2223	/*
2224	* This code must match the .resume stuff in VMMR0JmpA-amd64.asm exactly.
2225	*/
2226	# ifdef VBOX_STRICT
2227	Assert((uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2228	off += 8; /* RESUME_MAGIC */
2229	# endif
2230	# ifdef RT_OS_WINDOWS
2231	off += 0xa0; /* XMM6 thru XMM15 */
2232	# endif
2233	pState->u.x86.uRFlags = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2234	off += 8;
2235	pState->u.x86.auRegs[X86_GREG_xBX] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2236	off += 8;
2237	# ifdef RT_OS_WINDOWS
2238	pState->u.x86.auRegs[X86_GREG_xSI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2239	off += 8;
2240	pState->u.x86.auRegs[X86_GREG_xDI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2241	off += 8;
2242	# endif
2243	pState->u.x86.auRegs[X86_GREG_x12] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2244	off += 8;
2245	pState->u.x86.auRegs[X86_GREG_x13] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2246	off += 8;
2247	pState->u.x86.auRegs[X86_GREG_x14] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2248	off += 8;
2249	pState->u.x86.auRegs[X86_GREG_x15] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2250	off += 8;
2251	pState->u.x86.auRegs[X86_GREG_xBP] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2252	off += 8;
2253	pState->uPc = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2254	off += 8;
2255
2256	#elif defined(RT_ARCH_X86)
2257	/*
2258	* This code must match the .resume stuff in VMMR0JmpA-x86.asm exactly.
2259	*/
2260	# ifdef VBOX_STRICT
2261	Assert((uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2262	off += 4; /* RESUME_MAGIC */
2263	# endif
2264	pState->u.x86.uRFlags = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2265	off += 4;
2266	pState->u.x86.auRegs[X86_GREG_xBX] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2267	off += 4;
2268	pState->u.x86.auRegs[X86_GREG_xSI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2269	off += 4;
2270	pState->u.x86.auRegs[X86_GREG_xDI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2271	off += 4;
2272	pState->u.x86.auRegs[X86_GREG_xBP] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2273	off += 4;
2274	pState->uPc = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2275	off += 4;
2276	#else
2277	# error "Port me"
2278	#endif
2279
2280	/*
2281	* This is all we really need here, though the above helps if the assembly
2282	* doesn't contain unwind info (currently only on win/64, so that is useful).
2283	*/
2284	pState->u.x86.auRegs[X86_GREG_xBP] = pVCpu->vmm.s.CallRing3JmpBufR0.SavedEbp;
2285	pState->u.x86.auRegs[X86_GREG_xSP] = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume;
2286	}
2287
2288
2289	/**
2290	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2291	*
2292	* @returns VBox status code.
2293	* @param pVM The cross context VM structure.
2294	* @param uOperation Operation to execute.
2295	* @param u64Arg Constant argument.
2296	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2297	* details.
2298	*/
2299	VMMR3DECL(int) VMMR3CallR0(PVM pVM, uint32_t uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2300	{
2301	PVMCPU pVCpu = VMMGetCpu(pVM);
2302	AssertReturn(pVCpu, VERR_VM_THREAD_NOT_EMT);
2303	return VMMR3CallR0Emt(pVM, pVCpu, (VMMR0OPERATION)uOperation, u64Arg, pReqHdr);
2304	}
2305
2306
2307	/**
2308	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2309	*
2310	* @returns VBox status code.
2311	* @param pVM The cross context VM structure.
2312	* @param pVCpu The cross context VM structure.
2313	* @param enmOperation Operation to execute.
2314	* @param u64Arg Constant argument.
2315	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2316	* details.
2317	*/
2318	VMMR3_INT_DECL(int) VMMR3CallR0Emt(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2319	{
2320	int rc;
2321	for (;;)
2322	{
2323	#ifdef NO_SUPCALLR0VMM
2324	rc = VERR_GENERAL_FAILURE;
2325	#else
2326	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), pVCpu->idCpu, enmOperation, u64Arg, pReqHdr);
2327	#endif
2328	/*
2329	* Flush the logs.
2330	*/
2331	#ifdef LOG_ENABLED
2332	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
2333	#endif
2334	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
2335	if (rc != VINF_VMM_CALL_HOST)
2336	break;
2337	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2338	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
2339	break;
2340	/* Resume R0 */
2341	}
2342
2343	AssertLogRelMsgReturn(rc == VINF_SUCCESS \|\| RT_FAILURE(rc),
2344	("enmOperation=%u rc=%Rrc\n", enmOperation, rc),
2345	VERR_IPE_UNEXPECTED_INFO_STATUS);
2346	return rc;
2347	}
2348
2349
2350	/**
2351	* Service a call to the ring-3 host code.
2352	*
2353	* @returns VBox status code.
2354	* @param pVM The cross context VM structure.
2355	* @param pVCpu The cross context virtual CPU structure.
2356	* @remarks Careful with critsects.
2357	*/
2358	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu)
2359	{
2360	/*
2361	* We must also check for pending critsect exits or else we can deadlock
2362	* when entering other critsects here.
2363	*/
2364	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PDM_CRITSECT))
2365	PDMCritSectBothFF(pVCpu);
2366
2367	switch (pVCpu->vmm.s.enmCallRing3Operation)
2368	{
2369	/*
2370	* Acquire a critical section.
2371	*/
2372	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
2373	{
2374	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectEnterEx((PPDMCRITSECT)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2375	true /fCallRing3/);
2376	break;
2377	}
2378
2379	/*
2380	* Enter a r/w critical section exclusively.
2381	*/
2382	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_EXCL:
2383	{
2384	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterExclEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2385	true /fCallRing3/);
2386	break;
2387	}
2388
2389	/*
2390	* Enter a r/w critical section shared.
2391	*/
2392	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_SHARED:
2393	{
2394	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterSharedEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2395	true /fCallRing3/);
2396	break;
2397	}
2398
2399	/*
2400	* Acquire the PDM lock.
2401	*/
2402	case VMMCALLRING3_PDM_LOCK:
2403	{
2404	pVCpu->vmm.s.rcCallRing3 = PDMR3LockCall(pVM);
2405	break;
2406	}
2407
2408	/*
2409	* Grow the PGM pool.
2410	*/
2411	case VMMCALLRING3_PGM_POOL_GROW:
2412	{
2413	pVCpu->vmm.s.rcCallRing3 = PGMR3PoolGrow(pVM, pVCpu);
2414	break;
2415	}
2416
2417	/*
2418	* Maps an page allocation chunk into ring-3 so ring-0 can use it.
2419	*/
2420	case VMMCALLRING3_PGM_MAP_CHUNK:
2421	{
2422	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysChunkMap(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2423	break;
2424	}
2425
2426	/*
2427	* Allocates more handy pages.
2428	*/
2429	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
2430	{
2431	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateHandyPages(pVM);
2432	break;
2433	}
2434
2435	/*
2436	* Allocates a large page.
2437	*/
2438	case VMMCALLRING3_PGM_ALLOCATE_LARGE_HANDY_PAGE:
2439	{
2440	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateLargeHandyPage(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2441	break;
2442	}
2443
2444	/*
2445	* Acquire the PGM lock.
2446	*/
2447	case VMMCALLRING3_PGM_LOCK:
2448	{
2449	pVCpu->vmm.s.rcCallRing3 = PGMR3LockCall(pVM);
2450	break;
2451	}
2452
2453	/*
2454	* Acquire the MM hypervisor heap lock.
2455	*/
2456	case VMMCALLRING3_MMHYPER_LOCK:
2457	{
2458	pVCpu->vmm.s.rcCallRing3 = MMR3LockCall(pVM);
2459	break;
2460	}
2461
2462	/*
2463	* This is a noop. We just take this route to avoid unnecessary
2464	* tests in the loops.
2465	*/
2466	case VMMCALLRING3_VMM_LOGGER_FLUSH:
2467	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2468	LogAlways(("FLUSH\n"));
2469	break;
2470
2471	/*
2472	* Set the VM error message.
2473	*/
2474	case VMMCALLRING3_VM_SET_ERROR:
2475	VMR3SetErrorWorker(pVM);
2476	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2477	break;
2478
2479	/*
2480	* Set the VM runtime error message.
2481	*/
2482	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
2483	pVCpu->vmm.s.rcCallRing3 = VMR3SetRuntimeErrorWorker(pVM);
2484	break;
2485
2486	/*
2487	* Signal a ring 0 hypervisor assertion.
2488	* Cancel the longjmp operation that's in progress.
2489	*/
2490	case VMMCALLRING3_VM_R0_ASSERTION:
2491	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2492	pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call = false;
2493	#ifdef RT_ARCH_X86
2494	pVCpu->vmm.s.CallRing3JmpBufR0.eip = 0;
2495	#else
2496	pVCpu->vmm.s.CallRing3JmpBufR0.rip = 0;
2497	#endif
2498	#ifdef VMM_R0_SWITCH_STACK
2499	(uint64_t )pVCpu->vmm.s.pbEMTStackR3 = 0; /* clear marker */
2500	#endif
2501	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg1));
2502	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg2));
2503	return VERR_VMM_RING0_ASSERTION;
2504
2505	/*
2506	* A forced switch to ring 0 for preemption purposes.
2507	*/
2508	case VMMCALLRING3_VM_R0_PREEMPT:
2509	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2510	break;
2511
2512	default:
2513	AssertMsgFailed(("enmCallRing3Operation=%d\n", pVCpu->vmm.s.enmCallRing3Operation));
2514	return VERR_VMM_UNKNOWN_RING3_CALL;
2515	}
2516
2517	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2518	return VINF_SUCCESS;
2519	}
2520
2521
2522	/**
2523	* Displays the Force action Flags.
2524	*
2525	* @param pVM The cross context VM structure.
2526	* @param pHlp The output helpers.
2527	* @param pszArgs The additional arguments (ignored).
2528	*/
2529	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2530	{
2531	int c;
2532	uint32_t f;
2533	NOREF(pszArgs);
2534
2535	#define PRINT_FLAG(prf,flag) do { \
2536	if (f & (prf##flag)) \
2537	{ \
2538	static const char *s_psz = #flag; \
2539	if (!(c % 6)) \
2540	pHlp->pfnPrintf(pHlp, "%s\n %s", c ? "," : "", s_psz); \
2541	else \
2542	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2543	c++; \
2544	f &= ~(prf##flag); \
2545	} \
2546	} while (0)
2547
2548	#define PRINT_GROUP(prf,grp,sfx) do { \
2549	if (f & (prf##grp##sfx)) \
2550	{ \
2551	static const char *s_psz = #grp; \
2552	if (!(c % 5)) \
2553	pHlp->pfnPrintf(pHlp, "%s %s", c ? ",\n" : " Groups:\n", s_psz); \
2554	else \
2555	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2556	c++; \
2557	} \
2558	} while (0)
2559
2560	/*
2561	* The global flags.
2562	*/
2563	const uint32_t fGlobalForcedActions = pVM->fGlobalForcedActions;
2564	pHlp->pfnPrintf(pHlp, "Global FFs: %#RX32", fGlobalForcedActions);
2565
2566	/* show the flag mnemonics */
2567	c = 0;
2568	f = fGlobalForcedActions;
2569	PRINT_FLAG(VM_FF_,TM_VIRTUAL_SYNC);
2570	PRINT_FLAG(VM_FF_,PDM_QUEUES);
2571	PRINT_FLAG(VM_FF_,PDM_DMA);
2572	PRINT_FLAG(VM_FF_,DBGF);
2573	PRINT_FLAG(VM_FF_,REQUEST);
2574	PRINT_FLAG(VM_FF_,CHECK_VM_STATE);
2575	PRINT_FLAG(VM_FF_,RESET);
2576	PRINT_FLAG(VM_FF_,EMT_RENDEZVOUS);
2577	PRINT_FLAG(VM_FF_,PGM_NEED_HANDY_PAGES);
2578	PRINT_FLAG(VM_FF_,PGM_NO_MEMORY);
2579	PRINT_FLAG(VM_FF_,PGM_POOL_FLUSH_PENDING);
2580	PRINT_FLAG(VM_FF_,DEBUG_SUSPEND);
2581	if (f)
2582	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX32\n", c ? "," : "", f);
2583	else
2584	pHlp->pfnPrintf(pHlp, "\n");
2585
2586	/* the groups */
2587	c = 0;
2588	f = fGlobalForcedActions;
2589	PRINT_GROUP(VM_FF_,EXTERNAL_SUSPENDED,_MASK);
2590	PRINT_GROUP(VM_FF_,EXTERNAL_HALTED,_MASK);
2591	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE,_MASK);
2592	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2593	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_POST,_MASK);
2594	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY_POST,_MASK);
2595	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY,_MASK);
2596	PRINT_GROUP(VM_FF_,ALL_REM,_MASK);
2597	if (c)
2598	pHlp->pfnPrintf(pHlp, "\n");
2599
2600	/*
2601	* Per CPU flags.
2602	*/
2603	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2604	{
2605	PVMCPU pVCpu = pVM->apCpusR3[i];
2606	const uint64_t fLocalForcedActions = pVCpu->fLocalForcedActions;
2607	pHlp->pfnPrintf(pHlp, "CPU %u FFs: %#RX64", i, fLocalForcedActions);
2608
2609	/* show the flag mnemonics */
2610	c = 0;
2611	f = fLocalForcedActions;
2612	PRINT_FLAG(VMCPU_FF_,INTERRUPT_APIC);
2613	PRINT_FLAG(VMCPU_FF_,INTERRUPT_PIC);
2614	PRINT_FLAG(VMCPU_FF_,TIMER);
2615	PRINT_FLAG(VMCPU_FF_,INTERRUPT_NMI);
2616	PRINT_FLAG(VMCPU_FF_,INTERRUPT_SMI);
2617	PRINT_FLAG(VMCPU_FF_,PDM_CRITSECT);
2618	PRINT_FLAG(VMCPU_FF_,UNHALT);
2619	PRINT_FLAG(VMCPU_FF_,IEM);
2620	PRINT_FLAG(VMCPU_FF_,UPDATE_APIC);
2621	PRINT_FLAG(VMCPU_FF_,DBGF);
2622	PRINT_FLAG(VMCPU_FF_,REQUEST);
2623	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_CR3);
2624	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_PAE_PDPES);
2625	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3);
2626	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3_NON_GLOBAL);
2627	PRINT_FLAG(VMCPU_FF_,TLB_FLUSH);
2628	PRINT_FLAG(VMCPU_FF_,INHIBIT_INTERRUPTS);
2629	PRINT_FLAG(VMCPU_FF_,BLOCK_NMIS);
2630	PRINT_FLAG(VMCPU_FF_,TO_R3);
2631	PRINT_FLAG(VMCPU_FF_,IOM);
2632	if (f)
2633	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX64\n", c ? "," : "", f);
2634	else
2635	pHlp->pfnPrintf(pHlp, "\n");
2636
2637	if (fLocalForcedActions & VMCPU_FF_INHIBIT_INTERRUPTS)
2638	pHlp->pfnPrintf(pHlp, " intr inhibit RIP: %RGp\n", EMGetInhibitInterruptsPC(pVCpu));
2639
2640	/* the groups */
2641	c = 0;
2642	f = fLocalForcedActions;
2643	PRINT_GROUP(VMCPU_FF_,EXTERNAL_SUSPENDED,_MASK);
2644	PRINT_GROUP(VMCPU_FF_,EXTERNAL_HALTED,_MASK);
2645	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE,_MASK);
2646	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2647	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_POST,_MASK);
2648	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY_POST,_MASK);
2649	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY,_MASK);
2650	PRINT_GROUP(VMCPU_FF_,RESUME_GUEST,_MASK);
2651	PRINT_GROUP(VMCPU_FF_,HM_TO_R3,_MASK);
2652	PRINT_GROUP(VMCPU_FF_,ALL_REM,_MASK);
2653	if (c)
2654	pHlp->pfnPrintf(pHlp, "\n");
2655	}
2656
2657	#undef PRINT_FLAG
2658	#undef PRINT_GROUP
2659	}
2660

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source: vbox/trunk/src/VBox/VMM/VMMR3/VMM.cpp@ 87821

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