VMM.cpp@ 80281

Last change on this file since 80281 was 80281, checked in by vboxsync, 5 years ago
VMM,++: Refactoring code to use VMMC & VMMCPUCC. bugref:9217
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1	/* $Id: VMM.cpp 80281 2019-08-15 07:29:37Z vboxsync $ */
2	/** @file
3	* VMM - The Virtual Machine Monitor Core.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 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_pdm
41	* - @subpage pg_pgm
42	* - @subpage pg_rem
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 VBOX_BUGREF_9217_PART_I
101	#define LOG_GROUP LOG_GROUP_VMM
102	#include <VBox/vmm/vmm.h>
103	#include <VBox/vmm/vmapi.h>
104	#include <VBox/vmm/pgm.h>
105	#include <VBox/vmm/cfgm.h>
106	#include <VBox/vmm/pdmqueue.h>
107	#include <VBox/vmm/pdmcritsect.h>
108	#include <VBox/vmm/pdmcritsectrw.h>
109	#include <VBox/vmm/pdmapi.h>
110	#include <VBox/vmm/cpum.h>
111	#include <VBox/vmm/gim.h>
112	#include <VBox/vmm/mm.h>
113	#include <VBox/vmm/nem.h>
114	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
115	# include <VBox/vmm/iem.h>
116	#endif
117	#include <VBox/vmm/iom.h>
118	#include <VBox/vmm/trpm.h>
119	#include <VBox/vmm/selm.h>
120	#include <VBox/vmm/em.h>
121	#include <VBox/sup.h>
122	#include <VBox/vmm/dbgf.h>
123	#include <VBox/vmm/apic.h>
124	#ifdef VBOX_WITH_REM
125	# include <VBox/vmm/rem.h>
126	#endif
127	#include <VBox/vmm/ssm.h>
128	#include <VBox/vmm/tm.h>
129	#include "VMMInternal.h"
130	#include <VBox/vmm/vmcc.h>
131
132	#include <VBox/err.h>
133	#include <VBox/param.h>
134	#include <VBox/version.h>
135	#include <VBox/vmm/hm.h>
136	#include <iprt/assert.h>
137	#include <iprt/alloc.h>
138	#include <iprt/asm.h>
139	#include <iprt/time.h>
140	#include <iprt/semaphore.h>
141	#include <iprt/stream.h>
142	#include <iprt/string.h>
143	#include <iprt/stdarg.h>
144	#include <iprt/ctype.h>
145	#include <iprt/x86.h>
146
147
148	/*********************************************************************************************************************************
149	* Defined Constants And Macros *
150	*********************************************************************************************************************************/
151	/** The saved state version. */
152	#define VMM_SAVED_STATE_VERSION 4
153	/** The saved state version used by v3.0 and earlier. (Teleportation) */
154	#define VMM_SAVED_STATE_VERSION_3_0 3
155
156	/** Macro for flushing the ring-0 logging. */
157	#define VMM_FLUSH_R0_LOG(a_pR0Logger, a_pR3Logger) \
158	do { \
159	PVMMR0LOGGER pVmmLogger = (a_pR0Logger); \
160	if (!pVmmLogger \|\| pVmmLogger->Logger.offScratch == 0) \
161	{ /* likely? */ } \
162	else \
163	RTLogFlushR0(a_pR3Logger, &pVmmLogger->Logger); \
164	} while (0)
165
166
167	/*********************************************************************************************************************************
168	* Internal Functions *
169	*********************************************************************************************************************************/
170	static int vmmR3InitStacks(PVM pVM);
171	static int vmmR3InitLoggers(PVM pVM);
172	static void vmmR3InitRegisterStats(PVM pVM);
173	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM);
174	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
175	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, PTMTIMER pTimer, void *pvUser);
176	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
177	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser);
178	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu);
179	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
180
181
182	/**
183	* Initializes the VMM.
184	*
185	* @returns VBox status code.
186	* @param pVM The cross context VM structure.
187	*/
188	VMMR3_INT_DECL(int) VMMR3Init(PVM pVM)
189	{
190	LogFlow(("VMMR3Init\n"));
191
192	/*
193	* Assert alignment, sizes and order.
194	*/
195	AssertCompile(sizeof(pVM->vmm.s) <= sizeof(pVM->vmm.padding));
196	AssertCompile(RT_SIZEOFMEMB(VMCPU, vmm.s) <= RT_SIZEOFMEMB(VMCPU, vmm.padding));
197
198	/*
199	* Init basic VM VMM members.
200	*/
201	pVM->vmm.s.pahEvtRendezvousEnterOrdered = NULL;
202	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
203	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
204	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
205	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
206	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
207	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
208	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
209	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
210
211	/** @cfgm{/YieldEMTInterval, uint32_t, 1, UINT32_MAX, 23, ms}
212	* The EMT yield interval. The EMT yielding is a hack we employ to play a
213	* bit nicer with the rest of the system (like for instance the GUI).
214	*/
215	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "YieldEMTInterval", &pVM->vmm.s.cYieldEveryMillies,
216	23 /* Value arrived at after experimenting with the grub boot prompt. */);
217	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"YieldEMTInterval\", rc=%Rrc\n", rc), rc);
218
219
220	/** @cfgm{/VMM/UsePeriodicPreemptionTimers, boolean, true}
221	* Controls whether we employ per-cpu preemption timers to limit the time
222	* spent executing guest code. This option is not available on all
223	* platforms and we will silently ignore this setting then. If we are
224	* running in VT-x mode, we will use the VMX-preemption timer instead of
225	* this one when possible.
226	*/
227	PCFGMNODE pCfgVMM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "VMM");
228	rc = CFGMR3QueryBoolDef(pCfgVMM, "UsePeriodicPreemptionTimers", &pVM->vmm.s.fUsePeriodicPreemptionTimers, true);
229	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"VMM/UsePeriodicPreemptionTimers\", rc=%Rrc\n", rc), rc);
230
231	/*
232	* Initialize the VMM rendezvous semaphores.
233	*/
234	pVM->vmm.s.pahEvtRendezvousEnterOrdered = (PRTSEMEVENT)MMR3HeapAlloc(pVM, MM_TAG_VMM, sizeof(RTSEMEVENT) * pVM->cCpus);
235	if (!pVM->vmm.s.pahEvtRendezvousEnterOrdered)
236	return VERR_NO_MEMORY;
237	for (VMCPUID i = 0; i < pVM->cCpus; i++)
238	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
239	for (VMCPUID i = 0; i < pVM->cCpus; i++)
240	{
241	rc = RTSemEventCreate(&pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
242	AssertRCReturn(rc, rc);
243	}
244	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousEnterOneByOne);
245	AssertRCReturn(rc, rc);
246	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
247	AssertRCReturn(rc, rc);
248	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousDone);
249	AssertRCReturn(rc, rc);
250	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousDoneCaller);
251	AssertRCReturn(rc, rc);
252	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPush);
253	AssertRCReturn(rc, rc);
254	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPop);
255	AssertRCReturn(rc, rc);
256	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
257	AssertRCReturn(rc, rc);
258	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
259	AssertRCReturn(rc, rc);
260
261	/*
262	* Register the saved state data unit.
263	*/
264	rc = SSMR3RegisterInternal(pVM, "vmm", 1, VMM_SAVED_STATE_VERSION, VMM_STACK_SIZE + sizeof(RTGCPTR),
265	NULL, NULL, NULL,
266	NULL, vmmR3Save, NULL,
267	NULL, vmmR3Load, NULL);
268	if (RT_FAILURE(rc))
269	return rc;
270
271	/*
272	* Register the Ring-0 VM handle with the session for fast ioctl calls.
273	*/
274	rc = SUPR3SetVMForFastIOCtl(VMCC_GET_VMR0_FOR_CALL(pVM));
275	if (RT_FAILURE(rc))
276	return rc;
277
278	/*
279	* Init various sub-components.
280	*/
281	rc = vmmR3InitStacks(pVM);
282	if (RT_SUCCESS(rc))
283	{
284	rc = vmmR3InitLoggers(pVM);
285
286	#ifdef VBOX_WITH_NMI
287	/*
288	* Allocate mapping for the host APIC.
289	*/
290	if (RT_SUCCESS(rc))
291	{
292	rc = MMR3HyperReserve(pVM, PAGE_SIZE, "Host APIC", &pVM->vmm.s.GCPtrApicBase);
293	AssertRC(rc);
294	}
295	#endif
296	if (RT_SUCCESS(rc))
297	{
298	/*
299	* Debug info and statistics.
300	*/
301	DBGFR3InfoRegisterInternal(pVM, "fflags", "Displays the current Forced actions Flags.", vmmR3InfoFF);
302	vmmR3InitRegisterStats(pVM);
303	vmmInitFormatTypes();
304
305	return VINF_SUCCESS;
306	}
307	}
308	/** @todo Need failure cleanup? */
309
310	return rc;
311	}
312
313
314	/**
315	* Allocate & setup the VMM RC stack(s) (for EMTs).
316	*
317	* The stacks are also used for long jumps in Ring-0.
318	*
319	* @returns VBox status code.
320	* @param pVM The cross context VM structure.
321	*
322	* @remarks The optional guard page gets it protection setup up during R3 init
323	* completion because of init order issues.
324	*/
325	static int vmmR3InitStacks(PVM pVM)
326	{
327	int rc = VINF_SUCCESS;
328	#ifdef VMM_R0_SWITCH_STACK
329	uint32_t fFlags = MMHYPER_AONR_FLAGS_KERNEL_MAPPING;
330	#else
331	uint32_t fFlags = 0;
332	#endif
333
334	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
335	{
336	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
337
338	#ifdef VBOX_STRICT_VMM_STACK
339	rc = MMR3HyperAllocOnceNoRelEx(pVM, PAGE_SIZE + VMM_STACK_SIZE + PAGE_SIZE,
340	#else
341	rc = MMR3HyperAllocOnceNoRelEx(pVM, VMM_STACK_SIZE,
342	#endif
343	PAGE_SIZE, MM_TAG_VMM, fFlags, (void **)&pVCpu->vmm.s.pbEMTStackR3);
344	if (RT_SUCCESS(rc))
345	{
346	#ifdef VBOX_STRICT_VMM_STACK
347	pVCpu->vmm.s.pbEMTStackR3 += PAGE_SIZE;
348	#endif
349	pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
350
351	}
352	}
353
354	return rc;
355	}
356
357
358	/**
359	* Initialize the loggers.
360	*
361	* @returns VBox status code.
362	* @param pVM The cross context VM structure.
363	*/
364	static int vmmR3InitLoggers(PVM pVM)
365	{
366	int rc;
367	#define RTLogCalcSizeForR0(cGroups, fFlags) (RT_UOFFSETOF_DYN(VMMR0LOGGER, Logger.afGroups[cGroups]) + PAGE_SIZE)
368
369	/*
370	* Allocate R0 Logger instance (finalized in the relocator).
371	*/
372	#if defined(LOG_ENABLED) && defined(VBOX_WITH_R0_LOGGING)
373	PRTLOGGER pLogger = RTLogDefaultInstance();
374	if (pLogger)
375	{
376	size_t const cbLogger = RTLogCalcSizeForR0(pLogger->cGroups, 0);
377	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
378	{
379	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
380	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
381	(void **)&pVCpu->vmm.s.pR0LoggerR3);
382	if (RT_FAILURE(rc))
383	return rc;
384	pVCpu->vmm.s.pR0LoggerR3->pVM = VMCC_GET_VMR0_FOR_CALL(pVM);
385	//pVCpu->vmm.s.pR0LoggerR3->fCreated = false;
386	pVCpu->vmm.s.pR0LoggerR3->cbLogger = (uint32_t)cbLogger;
387	pVCpu->vmm.s.pR0LoggerR0 = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pR0LoggerR3);
388	}
389	}
390	#endif /* LOG_ENABLED && VBOX_WITH_R0_LOGGING */
391
392	/*
393	* Release logging.
394	*/
395	PRTLOGGER pRelLogger = RTLogRelGetDefaultInstance();
396	if (pRelLogger)
397	{
398	/*
399	* Ring-0 release logger.
400	*/
401	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
402	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
403	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
404
405	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
406	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
407	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
408
409	size_t const cbLogger = RTLogCalcSizeForR0(pRelLogger->cGroups, 0);
410
411	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
412	{
413	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
414	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
415	(void **)&pVCpu->vmm.s.pR0RelLoggerR3);
416	if (RT_FAILURE(rc))
417	return rc;
418	PVMMR0LOGGER pVmmLogger = pVCpu->vmm.s.pR0RelLoggerR3;
419	RTR0PTR R0PtrVmmLogger = MMHyperR3ToR0(pVM, pVmmLogger);
420	pVCpu->vmm.s.pR0RelLoggerR0 = R0PtrVmmLogger;
421	pVmmLogger->pVM = VMCC_GET_VMR0_FOR_CALL(pVM);
422	pVmmLogger->cbLogger = (uint32_t)cbLogger;
423	pVmmLogger->fCreated = false;
424	pVmmLogger->fFlushingDisabled = false;
425	pVmmLogger->fRegistered = false;
426	pVmmLogger->idCpu = idCpu;
427
428	char szR0ThreadName[16];
429	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", idCpu);
430	rc = RTLogCreateForR0(&pVmmLogger->Logger, pVmmLogger->cbLogger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
431	pfnLoggerWrapper, pfnLoggerFlush,
432	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
433	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
434
435	/* We only update the release log instance here. */
436	rc = RTLogCopyGroupsAndFlagsForR0(&pVmmLogger->Logger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
437	pRelLogger, RTLOGFLAGS_BUFFERED, UINT32_MAX);
438	AssertReleaseMsgRCReturn(rc, ("RTLogCopyGroupsAndFlagsForR0 failed! rc=%Rra\n", rc), rc);
439
440	pVmmLogger->fCreated = true;
441	}
442	}
443
444	return VINF_SUCCESS;
445	}
446
447
448	/**
449	* VMMR3Init worker that register the statistics with STAM.
450	*
451	* @param pVM The cross context VM structure.
452	*/
453	static void vmmR3InitRegisterStats(PVM pVM)
454	{
455	RT_NOREF_PV(pVM);
456
457	/*
458	* Statistics.
459	*/
460	STAM_REG(pVM, &pVM->vmm.s.StatRunGC, STAMTYPE_COUNTER, "/VMM/RunGC", STAMUNIT_OCCURENCES, "Number of context switches.");
461	STAM_REG(pVM, &pVM->vmm.s.StatRZRetNormal, STAMTYPE_COUNTER, "/VMM/RZRet/Normal", STAMUNIT_OCCURENCES, "Number of VINF_SUCCESS returns.");
462	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterrupt, STAMTYPE_COUNTER, "/VMM/RZRet/Interrupt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT returns.");
463	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptHyper, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptHyper", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_HYPER returns.");
464	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGuestTrap, STAMTYPE_COUNTER, "/VMM/RZRet/GuestTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_GUEST_TRAP returns.");
465	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitch, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitch", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH returns.");
466	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitchInt, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitchInt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH_INT returns.");
467	STAM_REG(pVM, &pVM->vmm.s.StatRZRetStaleSelector, STAMTYPE_COUNTER, "/VMM/RZRet/StaleSelector", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_STALE_SELECTOR returns.");
468	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIRETTrap, STAMTYPE_COUNTER, "/VMM/RZRet/IRETTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_IRET_TRAP returns.");
469	STAM_REG(pVM, &pVM->vmm.s.StatRZRetEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/Emulate", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION returns.");
470	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/PatchEmulate", STAMUNIT_OCCURENCES, "Number of VINF_PATCH_EMULATE_INSTR returns.");
471	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIORead, STAMTYPE_COUNTER, "/VMM/RZRet/IORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_READ returns.");
472	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_WRITE returns.");
473	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_COMMIT_WRITE returns.");
474	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIORead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ returns.");
475	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_WRITE returns.");
476	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_COMMIT_WRITE returns.");
477	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOReadWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOReadWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ_WRITE returns.");
478	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchRead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchRead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_READ returns.");
479	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_WRITE returns.");
480	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRRead, STAMTYPE_COUNTER, "/VMM/RZRet/MSRRead", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_READ returns.");
481	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MSRWrite", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_WRITE returns.");
482	STAM_REG(pVM, &pVM->vmm.s.StatRZRetLDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/LDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_GDT_FAULT returns.");
483	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/GDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_LDT_FAULT returns.");
484	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/IDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_IDT_FAULT returns.");
485	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTSSFault, STAMTYPE_COUNTER, "/VMM/RZRet/TSSFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_TSS_FAULT returns.");
486	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCSAMTask, STAMTYPE_COUNTER, "/VMM/RZRet/CSAMTask", STAMUNIT_OCCURENCES, "Number of VINF_CSAM_PENDING_ACTION returns.");
487	STAM_REG(pVM, &pVM->vmm.s.StatRZRetSyncCR3, STAMTYPE_COUNTER, "/VMM/RZRet/SyncCR", STAMUNIT_OCCURENCES, "Number of VINF_PGM_SYNC_CR3 returns.");
488	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMisc, STAMTYPE_COUNTER, "/VMM/RZRet/Misc", STAMUNIT_OCCURENCES, "Number of misc returns.");
489	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchInt3, STAMTYPE_COUNTER, "/VMM/RZRet/PatchInt3", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_INT3 returns.");
490	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchPF, STAMTYPE_COUNTER, "/VMM/RZRet/PatchPF", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_PF returns.");
491	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchGP, STAMTYPE_COUNTER, "/VMM/RZRet/PatchGP", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_GP returns.");
492	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchIretIRQ, STAMTYPE_COUNTER, "/VMM/RZRet/PatchIret", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PENDING_IRQ_AFTER_IRET returns.");
493	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRescheduleREM, STAMTYPE_COUNTER, "/VMM/RZRet/ScheduleREM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RESCHEDULE_REM returns.");
494	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Total, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns.");
495	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.");
496	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.");
497	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.");
498	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.");
499	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.");
500	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.");
501	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.");
502	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.");
503	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.");
504	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.");
505	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.");
506	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTimerPending, STAMTYPE_COUNTER, "/VMM/RZRet/TimerPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TIMER_PENDING returns.");
507	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptPending, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_PENDING returns.");
508	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPATMDuplicateFn, STAMTYPE_COUNTER, "/VMM/RZRet/PATMDuplicateFn", STAMUNIT_OCCURENCES, "Number of VINF_PATM_DUPLICATE_FUNCTION returns.");
509	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMChangeMode, STAMTYPE_COUNTER, "/VMM/RZRet/PGMChangeMode", STAMUNIT_OCCURENCES, "Number of VINF_PGM_CHANGE_MODE returns.");
510	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMFlushPending, STAMTYPE_COUNTER, "/VMM/RZRet/PGMFlushPending", STAMUNIT_OCCURENCES, "Number of VINF_PGM_POOL_FLUSH_PENDING returns.");
511	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPendingRequest, STAMTYPE_COUNTER, "/VMM/RZRet/PendingRequest", STAMUNIT_OCCURENCES, "Number of VINF_EM_PENDING_REQUEST returns.");
512	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchTPR, STAMTYPE_COUNTER, "/VMM/RZRet/PatchTPR", STAMUNIT_OCCURENCES, "Number of VINF_EM_HM_PATCH_TPR_INSTR returns.");
513	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCallRing3, STAMTYPE_COUNTER, "/VMM/RZCallR3/Misc", STAMUNIT_OCCURENCES, "Number of Other ring-3 calls.");
514	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_LOCK calls.");
515	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMCritSectEnter, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMCritSectEnter", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_CRITSECT_ENTER calls.");
516	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_LOCK calls.");
517	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMPoolGrow, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMPoolGrow", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_POOL_GROW calls.");
518	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMMapChunk, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMMapChunk", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_MAP_CHUNK calls.");
519	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMAllocHandy, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMAllocHandy", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES calls.");
520	STAM_REG(pVM, &pVM->vmm.s.StatRZCallRemReplay, STAMTYPE_COUNTER, "/VMM/RZCallR3/REMReplay", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS calls.");
521	STAM_REG(pVM, &pVM->vmm.s.StatRZCallLogFlush, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMMLogFlush", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VMM_LOGGER_FLUSH calls.");
522	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMSetError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_ERROR calls.");
523	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetRuntimeError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMRuntimeError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_RUNTIME_ERROR calls.");
524
525	#ifdef VBOX_WITH_STATISTICS
526	for (VMCPUID i = 0; i < pVM->cCpus; i++)
527	{
528	PVMCPU pVCpu = pVM->apCpusR3[i];
529	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);
530	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cbUsedAvg, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Average stack usage.", "/VMM/Stack/CPU%u/Avg", i);
531	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cUsedTotal, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of stack usages.", "/VMM/Stack/CPU%u/Uses", i);
532	}
533	#endif
534	for (VMCPUID i = 0; i < pVM->cCpus; i++)
535	{
536	PVMCPU pVCpu = pVM->apCpusR3[i];
537	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlock, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlock", i);
538	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOnTime, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOnTime", i);
539	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOverslept, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOverslept", i);
540	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockInsomnia, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockInsomnia", i);
541	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExec, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec", i);
542	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromSpin, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromSpin", i);
543	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromBlock, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromBlock", i);
544	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0Halts, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryCounter", i);
545	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsSucceeded, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistorySucceeded", i);
546	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsToRing3, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryToRing3", i);
547	}
548	}
549
550
551	/**
552	* Worker for VMMR3InitR0 that calls ring-0 to do EMT specific initialization.
553	*
554	* @returns VBox status code.
555	* @param pVM The cross context VM structure.
556	* @param pVCpu The cross context per CPU structure.
557	* @thread EMT(pVCpu)
558	*/
559	static DECLCALLBACK(int) vmmR3InitR0Emt(PVM pVM, PVMCPU pVCpu)
560	{
561	return VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_VMMR0_INIT_EMT, 0, NULL);
562	}
563
564
565	/**
566	* Initializes the R0 VMM.
567	*
568	* @returns VBox status code.
569	* @param pVM The cross context VM structure.
570	*/
571	VMMR3_INT_DECL(int) VMMR3InitR0(PVM pVM)
572	{
573	int rc;
574	PVMCPU pVCpu = VMMGetCpu(pVM);
575	Assert(pVCpu && pVCpu->idCpu == 0);
576
577	#ifdef LOG_ENABLED
578	/*
579	* Initialize the ring-0 logger if we haven't done so yet.
580	*/
581	if ( pVCpu->vmm.s.pR0LoggerR3
582	&& !pVCpu->vmm.s.pR0LoggerR3->fCreated)
583	{
584	rc = VMMR3UpdateLoggers(pVM);
585	if (RT_FAILURE(rc))
586	return rc;
587	}
588	#endif
589
590	/*
591	* Call Ring-0 entry with init code.
592	*/
593	for (;;)
594	{
595	#ifdef NO_SUPCALLR0VMM
596	//rc = VERR_GENERAL_FAILURE;
597	rc = VINF_SUCCESS;
598	#else
599	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), 0 /idCpu/, VMMR0_DO_VMMR0_INIT, RT_MAKE_U64(VMMGetSvnRev(), vmmGetBuildType()), NULL);
600	#endif
601	/*
602	* Flush the logs.
603	*/
604	#ifdef LOG_ENABLED
605	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
606	#endif
607	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
608	if (rc != VINF_VMM_CALL_HOST)
609	break;
610	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
611	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
612	break;
613	/* Resume R0 */
614	}
615
616	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
617	{
618	LogRel(("VMM: R0 init failed, rc=%Rra\n", rc));
619	if (RT_SUCCESS(rc))
620	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
621	}
622
623	/* Log whether thread-context hooks are used (on Linux this can depend on how the kernel is configured). */
624	if (pVM->apCpusR3[0]->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
625	LogRel(("VMM: Enabled thread-context hooks\n"));
626	else
627	LogRel(("VMM: Thread-context hooks unavailable\n"));
628
629	/* Log RTThreadPreemptIsPendingTrusty() and RTThreadPreemptIsPossible() results. */
630	if (pVM->vmm.s.fIsPreemptPendingApiTrusty)
631	LogRel(("VMM: RTThreadPreemptIsPending() can be trusted\n"));
632	else
633	LogRel(("VMM: Warning! RTThreadPreemptIsPending() cannot be trusted! Need to update kernel info?\n"));
634	if (pVM->vmm.s.fIsPreemptPossible)
635	LogRel(("VMM: Kernel preemption is possible\n"));
636	else
637	LogRel(("VMM: Kernel preemption is not possible it seems\n"));
638
639	/*
640	* Send all EMTs to ring-0 to get their logger initialized.
641	*/
642	for (VMCPUID idCpu = 0; RT_SUCCESS(rc) && idCpu < pVM->cCpus; idCpu++)
643	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)vmmR3InitR0Emt, 2, pVM, pVM->apCpusR3[idCpu]);
644
645	return rc;
646	}
647
648
649	/**
650	* Called when an init phase completes.
651	*
652	* @returns VBox status code.
653	* @param pVM The cross context VM structure.
654	* @param enmWhat Which init phase.
655	*/
656	VMMR3_INT_DECL(int) VMMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
657	{
658	int rc = VINF_SUCCESS;
659
660	switch (enmWhat)
661	{
662	case VMINITCOMPLETED_RING3:
663	{
664	/*
665	* Create the EMT yield timer.
666	*/
667	rc = TMR3TimerCreateInternal(pVM, TMCLOCK_REAL, vmmR3YieldEMT, NULL, "EMT Yielder", &pVM->vmm.s.pYieldTimer);
668	AssertRCReturn(rc, rc);
669
670	rc = TMTimerSetMillies(pVM->vmm.s.pYieldTimer, pVM->vmm.s.cYieldEveryMillies);
671	AssertRCReturn(rc, rc);
672	break;
673	}
674
675	case VMINITCOMPLETED_HM:
676	{
677	/*
678	* Disable the periodic preemption timers if we can use the
679	* VMX-preemption timer instead.
680	*/
681	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
682	&& HMR3IsVmxPreemptionTimerUsed(pVM))
683	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
684	LogRel(("VMM: fUsePeriodicPreemptionTimers=%RTbool\n", pVM->vmm.s.fUsePeriodicPreemptionTimers));
685
686	/*
687	* Last chance for GIM to update its CPUID leaves if it requires
688	* knowledge/information from HM initialization.
689	*/
690	rc = GIMR3InitCompleted(pVM);
691	AssertRCReturn(rc, rc);
692
693	/*
694	* CPUM's post-initialization (print CPUIDs).
695	*/
696	CPUMR3LogCpuIdAndMsrFeatures(pVM);
697	break;
698	}
699
700	default: /* shuts up gcc */
701	break;
702	}
703
704	return rc;
705	}
706
707
708	/**
709	* Terminate the VMM bits.
710	*
711	* @returns VBox status code.
712	* @param pVM The cross context VM structure.
713	*/
714	VMMR3_INT_DECL(int) VMMR3Term(PVM pVM)
715	{
716	PVMCPU pVCpu = VMMGetCpu(pVM);
717	Assert(pVCpu && pVCpu->idCpu == 0);
718
719	/*
720	* Call Ring-0 entry with termination code.
721	*/
722	int rc;
723	for (;;)
724	{
725	#ifdef NO_SUPCALLR0VMM
726	//rc = VERR_GENERAL_FAILURE;
727	rc = VINF_SUCCESS;
728	#else
729	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), 0 /idCpu/, VMMR0_DO_VMMR0_TERM, 0, NULL);
730	#endif
731	/*
732	* Flush the logs.
733	*/
734	#ifdef LOG_ENABLED
735	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
736	#endif
737	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
738	if (rc != VINF_VMM_CALL_HOST)
739	break;
740	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
741	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
742	break;
743	/* Resume R0 */
744	}
745	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
746	{
747	LogRel(("VMM: VMMR3Term: R0 term failed, rc=%Rra. (warning)\n", rc));
748	if (RT_SUCCESS(rc))
749	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
750	}
751
752	for (VMCPUID i = 0; i < pVM->cCpus; i++)
753	{
754	RTSemEventDestroy(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
755	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
756	}
757	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
758	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
759	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
760	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
761	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousDone);
762	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
763	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousDoneCaller);
764	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
765	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
766	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
767	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
768	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
769	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
770	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
771	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
772	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
773
774	vmmTermFormatTypes();
775	return rc;
776	}
777
778
779	/**
780	* Applies relocations to data and code managed by this
781	* component. This function will be called at init and
782	* whenever the VMM need to relocate it self inside the GC.
783	*
784	* The VMM will need to apply relocations to the core code.
785	*
786	* @param pVM The cross context VM structure.
787	* @param offDelta The relocation delta.
788	*/
789	VMMR3_INT_DECL(void) VMMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
790	{
791	LogFlow(("VMMR3Relocate: offDelta=%RGv\n", offDelta));
792	RT_NOREF(offDelta);
793
794	/*
795	* Update the logger.
796	*/
797	VMMR3UpdateLoggers(pVM);
798	}
799
800
801	/**
802	* Updates the settings for the RC and R0 loggers.
803	*
804	* @returns VBox status code.
805	* @param pVM The cross context VM structure.
806	*/
807	VMMR3_INT_DECL(int) VMMR3UpdateLoggers(PVM pVM)
808	{
809	int rc = VINF_SUCCESS;
810
811	#ifdef LOG_ENABLED
812	/*
813	* For the ring-0 EMT logger, we use a per-thread logger instance
814	* in ring-0. Only initialize it once.
815	*/
816	PRTLOGGER const pDefault = RTLogDefaultInstance();
817	for (VMCPUID i = 0; i < pVM->cCpus; i++)
818	{
819	PVMCPU pVCpu = pVM->apCpusR3[i];
820	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
821	if (pR0LoggerR3)
822	{
823	if (!pR0LoggerR3->fCreated)
824	{
825	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
826	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
827	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
828
829	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
830	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
831	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
832
833	char szR0ThreadName[16];
834	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", i);
835	rc = RTLogCreateForR0(&pR0LoggerR3->Logger, pR0LoggerR3->cbLogger,
836	pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
837	pfnLoggerWrapper, pfnLoggerFlush,
838	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
839	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
840
841	pR0LoggerR3->idCpu = i;
842	pR0LoggerR3->fCreated = true;
843	pR0LoggerR3->fFlushingDisabled = false;
844	}
845
846	rc = RTLogCopyGroupsAndFlagsForR0(&pR0LoggerR3->Logger, pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
847	pDefault, RTLOGFLAGS_BUFFERED, UINT32_MAX);
848	AssertRC(rc);
849	}
850	}
851	#else
852	RT_NOREF(pVM);
853	#endif
854
855	return rc;
856	}
857
858
859	/**
860	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg1Weak output.
861	*
862	* @returns Pointer to the buffer.
863	* @param pVM The cross context VM structure.
864	*/
865	VMMR3DECL(const char *) VMMR3GetRZAssertMsg1(PVM pVM)
866	{
867	return pVM->vmm.s.szRing0AssertMsg1;
868	}
869
870
871	/**
872	* Returns the VMCPU of the specified virtual CPU.
873	*
874	* @returns The VMCPU pointer. NULL if @a idCpu or @a pUVM is invalid.
875	*
876	* @param pUVM The user mode VM handle.
877	* @param idCpu The ID of the virtual CPU.
878	*/
879	VMMR3DECL(PVMCPU) VMMR3GetCpuByIdU(PUVM pUVM, RTCPUID idCpu)
880	{
881	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
882	AssertReturn(idCpu < pUVM->cCpus, NULL);
883	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, NULL);
884	return pUVM->pVM->apCpusR3[idCpu];
885	}
886
887
888	/**
889	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg2Weak output.
890	*
891	* @returns Pointer to the buffer.
892	* @param pVM The cross context VM structure.
893	*/
894	VMMR3DECL(const char *) VMMR3GetRZAssertMsg2(PVM pVM)
895	{
896	return pVM->vmm.s.szRing0AssertMsg2;
897	}
898
899
900	/**
901	* Execute state save operation.
902	*
903	* @returns VBox status code.
904	* @param pVM The cross context VM structure.
905	* @param pSSM SSM operation handle.
906	*/
907	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM)
908	{
909	LogFlow(("vmmR3Save:\n"));
910
911	/*
912	* Save the started/stopped state of all CPUs except 0 as it will always
913	* be running. This avoids breaking the saved state version. :-)
914	*/
915	for (VMCPUID i = 1; i < pVM->cCpus; i++)
916	SSMR3PutBool(pSSM, VMCPUSTATE_IS_STARTED(VMCPU_GET_STATE(pVM->apCpusR3[i])));
917
918	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
919	}
920
921
922	/**
923	* Execute state load operation.
924	*
925	* @returns VBox status code.
926	* @param pVM The cross context VM structure.
927	* @param pSSM SSM operation handle.
928	* @param uVersion Data layout version.
929	* @param uPass The data pass.
930	*/
931	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
932	{
933	LogFlow(("vmmR3Load:\n"));
934	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
935
936	/*
937	* Validate version.
938	*/
939	if ( uVersion != VMM_SAVED_STATE_VERSION
940	&& uVersion != VMM_SAVED_STATE_VERSION_3_0)
941	{
942	AssertMsgFailed(("vmmR3Load: Invalid version uVersion=%u!\n", uVersion));
943	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
944	}
945
946	if (uVersion <= VMM_SAVED_STATE_VERSION_3_0)
947	{
948	/* Ignore the stack bottom, stack pointer and stack bits. */
949	RTRCPTR RCPtrIgnored;
950	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
951	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
952	#ifdef RT_OS_DARWIN
953	if ( SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(3,0,0)
954	&& SSMR3HandleVersion(pSSM) < VBOX_FULL_VERSION_MAKE(3,1,0)
955	&& SSMR3HandleRevision(pSSM) >= 48858
956	&& ( !strcmp(SSMR3HandleHostOSAndArch(pSSM), "darwin.x86")
957	\|\| !strcmp(SSMR3HandleHostOSAndArch(pSSM), "") )
958	)
959	SSMR3Skip(pSSM, 16384);
960	else
961	SSMR3Skip(pSSM, 8192);
962	#else
963	SSMR3Skip(pSSM, 8192);
964	#endif
965	}
966
967	/*
968	* Restore the VMCPU states. VCPU 0 is always started.
969	*/
970	VMCPU_SET_STATE(pVM->apCpusR3[0], VMCPUSTATE_STARTED);
971	for (VMCPUID i = 1; i < pVM->cCpus; i++)
972	{
973	bool fStarted;
974	int rc = SSMR3GetBool(pSSM, &fStarted);
975	if (RT_FAILURE(rc))
976	return rc;
977	VMCPU_SET_STATE(pVM->apCpusR3[i], fStarted ? VMCPUSTATE_STARTED : VMCPUSTATE_STOPPED);
978	}
979
980	/* terminator */
981	uint32_t u32;
982	int rc = SSMR3GetU32(pSSM, &u32);
983	if (RT_FAILURE(rc))
984	return rc;
985	if (u32 != UINT32_MAX)
986	{
987	AssertMsgFailed(("u32=%#x\n", u32));
988	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
989	}
990	return VINF_SUCCESS;
991	}
992
993
994	/**
995	* Suspends the CPU yielder.
996	*
997	* @param pVM The cross context VM structure.
998	*/
999	VMMR3_INT_DECL(void) VMMR3YieldSuspend(PVM pVM)
1000	{
1001	VMCPU_ASSERT_EMT(pVM->apCpusR3[0]);
1002	if (!pVM->vmm.s.cYieldResumeMillies)
1003	{
1004	uint64_t u64Now = TMTimerGet(pVM->vmm.s.pYieldTimer);
1005	uint64_t u64Expire = TMTimerGetExpire(pVM->vmm.s.pYieldTimer);
1006	if (u64Now >= u64Expire \|\| u64Expire == ~(uint64_t)0)
1007	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1008	else
1009	pVM->vmm.s.cYieldResumeMillies = TMTimerToMilli(pVM->vmm.s.pYieldTimer, u64Expire - u64Now);
1010	TMTimerStop(pVM->vmm.s.pYieldTimer);
1011	}
1012	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1013	}
1014
1015
1016	/**
1017	* Stops the CPU yielder.
1018	*
1019	* @param pVM The cross context VM structure.
1020	*/
1021	VMMR3_INT_DECL(void) VMMR3YieldStop(PVM pVM)
1022	{
1023	if (!pVM->vmm.s.cYieldResumeMillies)
1024	TMTimerStop(pVM->vmm.s.pYieldTimer);
1025	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1026	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1027	}
1028
1029
1030	/**
1031	* Resumes the CPU yielder when it has been a suspended or stopped.
1032	*
1033	* @param pVM The cross context VM structure.
1034	*/
1035	VMMR3_INT_DECL(void) VMMR3YieldResume(PVM pVM)
1036	{
1037	if (pVM->vmm.s.cYieldResumeMillies)
1038	{
1039	TMTimerSetMillies(pVM->vmm.s.pYieldTimer, pVM->vmm.s.cYieldResumeMillies);
1040	pVM->vmm.s.cYieldResumeMillies = 0;
1041	}
1042	}
1043
1044
1045	/**
1046	* Internal timer callback function.
1047	*
1048	* @param pVM The cross context VM structure.
1049	* @param pTimer The timer handle.
1050	* @param pvUser User argument specified upon timer creation.
1051	*/
1052	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, PTMTIMER pTimer, void *pvUser)
1053	{
1054	NOREF(pvUser);
1055
1056	/*
1057	* This really needs some careful tuning. While we shouldn't be too greedy since
1058	* that'll cause the rest of the system to stop up, we shouldn't be too nice either
1059	* because that'll cause us to stop up.
1060	*
1061	* The current logic is to use the default interval when there is no lag worth
1062	* mentioning, but when we start accumulating lag we don't bother yielding at all.
1063	*
1064	* (This depends on the TMCLOCK_VIRTUAL_SYNC to be scheduled before TMCLOCK_REAL
1065	* so the lag is up to date.)
1066	*/
1067	const uint64_t u64Lag = TMVirtualSyncGetLag(pVM);
1068	if ( u64Lag < 50000000 /* 50ms */
1069	\|\| ( u64Lag < 1000000000 /* 1s */
1070	&& RTTimeNanoTS() - pVM->vmm.s.u64LastYield < 500000000 /* 500 ms */)
1071	)
1072	{
1073	uint64_t u64Elapsed = RTTimeNanoTS();
1074	pVM->vmm.s.u64LastYield = u64Elapsed;
1075
1076	RTThreadYield();
1077
1078	#ifdef LOG_ENABLED
1079	u64Elapsed = RTTimeNanoTS() - u64Elapsed;
1080	Log(("vmmR3YieldEMT: %RI64 ns\n", u64Elapsed));
1081	#endif
1082	}
1083	TMTimerSetMillies(pTimer, pVM->vmm.s.cYieldEveryMillies);
1084	}
1085
1086
1087	/**
1088	* Executes guest code (Intel VT-x and AMD-V).
1089	*
1090	* @param pVM The cross context VM structure.
1091	* @param pVCpu The cross context virtual CPU structure.
1092	*/
1093	VMMR3_INT_DECL(int) VMMR3HmRunGC(PVM pVM, PVMCPU pVCpu)
1094	{
1095	Log2(("VMMR3HmRunGC: (cs:rip=%04x:%RX64)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1096
1097	for (;;)
1098	{
1099	int rc;
1100	do
1101	{
1102	#ifdef NO_SUPCALLR0VMM
1103	rc = VERR_GENERAL_FAILURE;
1104	#else
1105	rc = SUPR3CallVMMR0Fast(VMCC_GET_VMR0_FOR_CALL(pVM), VMMR0_DO_HM_RUN, pVCpu->idCpu);
1106	if (RT_LIKELY(rc == VINF_SUCCESS))
1107	rc = pVCpu->vmm.s.iLastGZRc;
1108	#endif
1109	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
1110
1111	#if 0 /** @todo triggers too often */
1112	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TO_R3));
1113	#endif
1114
1115	/*
1116	* Flush the logs
1117	*/
1118	#ifdef LOG_ENABLED
1119	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1120	#endif
1121	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1122	if (rc != VINF_VMM_CALL_HOST)
1123	{
1124	Log2(("VMMR3HmRunGC: returns %Rrc (cs:rip=%04x:%RX64)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1125	return rc;
1126	}
1127	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1128	if (RT_FAILURE(rc))
1129	return rc;
1130	/* Resume R0 */
1131	}
1132	}
1133
1134
1135	/**
1136	* Perform one of the fast I/O control VMMR0 operation.
1137	*
1138	* @returns VBox strict status code.
1139	* @param pVM The cross context VM structure.
1140	* @param pVCpu The cross context virtual CPU structure.
1141	* @param enmOperation The operation to perform.
1142	*/
1143	VMMR3_INT_DECL(VBOXSTRICTRC) VMMR3CallR0EmtFast(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation)
1144	{
1145	for (;;)
1146	{
1147	VBOXSTRICTRC rcStrict;
1148	do
1149	{
1150	#ifdef NO_SUPCALLR0VMM
1151	rcStrict = VERR_GENERAL_FAILURE;
1152	#else
1153	rcStrict = SUPR3CallVMMR0Fast(VMCC_GET_VMR0_FOR_CALL(pVM), enmOperation, pVCpu->idCpu);
1154	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
1155	rcStrict = pVCpu->vmm.s.iLastGZRc;
1156	#endif
1157	} while (rcStrict == VINF_EM_RAW_INTERRUPT_HYPER);
1158
1159	/*
1160	* Flush the logs
1161	*/
1162	#ifdef LOG_ENABLED
1163	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1164	#endif
1165	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1166	if (rcStrict != VINF_VMM_CALL_HOST)
1167	return rcStrict;
1168	int rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1169	if (RT_FAILURE(rc))
1170	return rc;
1171	/* Resume R0 */
1172	}
1173	}
1174
1175
1176	/**
1177	* VCPU worker for VMMR3SendStartupIpi.
1178	*
1179	* @param pVM The cross context VM structure.
1180	* @param idCpu Virtual CPU to perform SIPI on.
1181	* @param uVector The SIPI vector.
1182	*/
1183	static DECLCALLBACK(int) vmmR3SendStarupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1184	{
1185	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1186	VMCPU_ASSERT_EMT(pVCpu);
1187
1188	/*
1189	* In the INIT state, the target CPU is only responsive to an SIPI.
1190	* This is also true for when when the CPU is in VMX non-root mode.
1191	*
1192	* See AMD spec. 16.5 "Interprocessor Interrupts (IPI)".
1193	* See Intel spec. 26.6.2 "Activity State".
1194	*/
1195	if (EMGetState(pVCpu) != EMSTATE_WAIT_SIPI)
1196	return VINF_SUCCESS;
1197
1198	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1199	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1200	if (CPUMIsGuestInVmxRootMode(pCtx))
1201	{
1202	/* If the CPU is in VMX non-root mode we must cause a VM-exit. */
1203	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1204	return VBOXSTRICTRC_TODO(IEMExecVmxVmexitStartupIpi(pVCpu, uVector));
1205
1206	/* If the CPU is in VMX root mode (and not in VMX non-root mode) SIPIs are blocked. */
1207	return VINF_SUCCESS;
1208	}
1209	#endif
1210
1211	pCtx->cs.Sel = uVector << 8;
1212	pCtx->cs.ValidSel = uVector << 8;
1213	pCtx->cs.fFlags = CPUMSELREG_FLAGS_VALID;
1214	pCtx->cs.u64Base = uVector << 12;
1215	pCtx->cs.u32Limit = UINT32_C(0x0000ffff);
1216	pCtx->rip = 0;
1217
1218	Log(("vmmR3SendSipi for VCPU %d with vector %x\n", idCpu, uVector));
1219
1220	# if 1 /* If we keep the EMSTATE_WAIT_SIPI method, then move this to EM.cpp. */
1221	EMSetState(pVCpu, EMSTATE_HALTED);
1222	return VINF_EM_RESCHEDULE;
1223	# else /* And if we go the VMCPU::enmState way it can stay here. */
1224	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STOPPED);
1225	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1226	return VINF_SUCCESS;
1227	# endif
1228	}
1229
1230
1231	/**
1232	* VCPU worker for VMMR3SendInitIpi.
1233	*
1234	* @returns VBox status code.
1235	* @param pVM The cross context VM structure.
1236	* @param idCpu Virtual CPU to perform SIPI on.
1237	*/
1238	static DECLCALLBACK(int) vmmR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1239	{
1240	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1241	VMCPU_ASSERT_EMT(pVCpu);
1242
1243	Log(("vmmR3SendInitIpi for VCPU %d\n", idCpu));
1244
1245	/** @todo r=ramshankar: We should probably block INIT signal when the CPU is in
1246	* wait-for-SIPI state. Verify. */
1247
1248	/* If the CPU is in VMX non-root mode, INIT signals cause VM-exits. */
1249	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1250	PCCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1251	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1252	return VBOXSTRICTRC_TODO(IEMExecVmxVmexit(pVCpu, VMX_EXIT_INIT_SIGNAL, 0 /* uExitQual */));
1253	#endif
1254
1255	/** @todo Figure out how to handle a SVM nested-guest intercepts here for INIT
1256	* IPI (e.g. SVM_EXIT_INIT). */
1257
1258	PGMR3ResetCpu(pVM, pVCpu);
1259	PDMR3ResetCpu(pVCpu); /* Only clears pending interrupts force flags */
1260	APICR3InitIpi(pVCpu);
1261	TRPMR3ResetCpu(pVCpu);
1262	CPUMR3ResetCpu(pVM, pVCpu);
1263	EMR3ResetCpu(pVCpu);
1264	HMR3ResetCpu(pVCpu);
1265	NEMR3ResetCpu(pVCpu, true /fInitIpi/);
1266
1267	/* This will trickle up on the target EMT. */
1268	return VINF_EM_WAIT_SIPI;
1269	}
1270
1271
1272	/**
1273	* Sends a Startup IPI to the virtual CPU by setting CS:EIP into
1274	* vector-dependent state and unhalting processor.
1275	*
1276	* @param pVM The cross context VM structure.
1277	* @param idCpu Virtual CPU to perform SIPI on.
1278	* @param uVector SIPI vector.
1279	*/
1280	VMMR3_INT_DECL(void) VMMR3SendStartupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1281	{
1282	AssertReturnVoid(idCpu < pVM->cCpus);
1283
1284	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendStarupIpi, 3, pVM, idCpu, uVector);
1285	AssertRC(rc);
1286	}
1287
1288
1289	/**
1290	* Sends init IPI to the virtual CPU.
1291	*
1292	* @param pVM The cross context VM structure.
1293	* @param idCpu Virtual CPU to perform int IPI on.
1294	*/
1295	VMMR3_INT_DECL(void) VMMR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1296	{
1297	AssertReturnVoid(idCpu < pVM->cCpus);
1298
1299	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendInitIpi, 2, pVM, idCpu);
1300	AssertRC(rc);
1301	}
1302
1303
1304	/**
1305	* Registers the guest memory range that can be used for patching.
1306	*
1307	* @returns VBox status code.
1308	* @param pVM The cross context VM structure.
1309	* @param pPatchMem Patch memory range.
1310	* @param cbPatchMem Size of the memory range.
1311	*/
1312	VMMR3DECL(int) VMMR3RegisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1313	{
1314	VM_ASSERT_EMT(pVM);
1315	if (HMIsEnabled(pVM))
1316	return HMR3EnablePatching(pVM, pPatchMem, cbPatchMem);
1317
1318	return VERR_NOT_SUPPORTED;
1319	}
1320
1321
1322	/**
1323	* Deregisters the guest memory range that can be used for patching.
1324	*
1325	* @returns VBox status code.
1326	* @param pVM The cross context VM structure.
1327	* @param pPatchMem Patch memory range.
1328	* @param cbPatchMem Size of the memory range.
1329	*/
1330	VMMR3DECL(int) VMMR3DeregisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1331	{
1332	if (HMIsEnabled(pVM))
1333	return HMR3DisablePatching(pVM, pPatchMem, cbPatchMem);
1334
1335	return VINF_SUCCESS;
1336	}
1337
1338
1339	/**
1340	* Common recursion handler for the other EMTs.
1341	*
1342	* @returns Strict VBox status code.
1343	* @param pVM The cross context VM structure.
1344	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1345	* @param rcStrict Current status code to be combined with the one
1346	* from this recursion and returned.
1347	*/
1348	static VBOXSTRICTRC vmmR3EmtRendezvousCommonRecursion(PVM pVM, PVMCPU pVCpu, VBOXSTRICTRC rcStrict)
1349	{
1350	int rc2;
1351
1352	/*
1353	* We wait here while the initiator of this recursion reconfigures
1354	* everything. The last EMT to get in signals the initiator.
1355	*/
1356	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) == pVM->cCpus)
1357	{
1358	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1359	AssertLogRelRC(rc2);
1360	}
1361
1362	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPush, RT_INDEFINITE_WAIT);
1363	AssertLogRelRC(rc2);
1364
1365	/*
1366	* Do the normal rendezvous processing.
1367	*/
1368	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1369	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1370
1371	/*
1372	* Wait for the initiator to restore everything.
1373	*/
1374	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPop, RT_INDEFINITE_WAIT);
1375	AssertLogRelRC(rc2);
1376
1377	/*
1378	* Last thread out of here signals the initiator.
1379	*/
1380	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) == pVM->cCpus)
1381	{
1382	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1383	AssertLogRelRC(rc2);
1384	}
1385
1386	/*
1387	* Merge status codes and return.
1388	*/
1389	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
1390	if ( rcStrict2 != VINF_SUCCESS
1391	&& ( rcStrict == VINF_SUCCESS
1392	\|\| rcStrict > rcStrict2))
1393	rcStrict = rcStrict2;
1394	return rcStrict;
1395	}
1396
1397
1398	/**
1399	* Count returns and have the last non-caller EMT wake up the caller.
1400	*
1401	* @returns VBox strict informational status code for EM scheduling. No failures
1402	* will be returned here, those are for the caller only.
1403	*
1404	* @param pVM The cross context VM structure.
1405	* @param rcStrict The current accumulated recursive status code,
1406	* to be merged with i32RendezvousStatus and
1407	* returned.
1408	*/
1409	DECL_FORCE_INLINE(VBOXSTRICTRC) vmmR3EmtRendezvousNonCallerReturn(PVM pVM, VBOXSTRICTRC rcStrict)
1410	{
1411	VBOXSTRICTRC rcStrict2 = ASMAtomicReadS32(&pVM->vmm.s.i32RendezvousStatus);
1412
1413	uint32_t cReturned = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsReturned);
1414	if (cReturned == pVM->cCpus - 1U)
1415	{
1416	int rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1417	AssertLogRelRC(rc);
1418	}
1419
1420	/*
1421	* Merge the status codes, ignoring error statuses in this code path.
1422	*/
1423	AssertLogRelMsgReturn( rcStrict2 <= VINF_SUCCESS
1424	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1425	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)),
1426	VERR_IPE_UNEXPECTED_INFO_STATUS);
1427
1428	if (RT_SUCCESS(rcStrict2))
1429	{
1430	if ( rcStrict2 != VINF_SUCCESS
1431	&& ( rcStrict == VINF_SUCCESS
1432	\|\| rcStrict > rcStrict2))
1433	rcStrict = rcStrict2;
1434	}
1435	return rcStrict;
1436	}
1437
1438
1439	/**
1440	* Common worker for VMMR3EmtRendezvous and VMMR3EmtRendezvousFF.
1441	*
1442	* @returns VBox strict informational status code for EM scheduling. No failures
1443	* will be returned here, those are for the caller only. When
1444	* fIsCaller is set, VINF_SUCCESS is always returned.
1445	*
1446	* @param pVM The cross context VM structure.
1447	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1448	* @param fIsCaller Whether we're the VMMR3EmtRendezvous caller or
1449	* not.
1450	* @param fFlags The flags.
1451	* @param pfnRendezvous The callback.
1452	* @param pvUser The user argument for the callback.
1453	*/
1454	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
1455	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1456	{
1457	int rc;
1458	VBOXSTRICTRC rcStrictRecursion = VINF_SUCCESS;
1459
1460	/*
1461	* Enter, the last EMT triggers the next callback phase.
1462	*/
1463	uint32_t cEntered = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsEntered);
1464	if (cEntered != pVM->cCpus)
1465	{
1466	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1467	{
1468	/* Wait for our turn. */
1469	for (;;)
1470	{
1471	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, RT_INDEFINITE_WAIT);
1472	AssertLogRelRC(rc);
1473	if (!pVM->vmm.s.fRendezvousRecursion)
1474	break;
1475	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1476	}
1477	}
1478	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1479	{
1480	/* Wait for the last EMT to arrive and wake everyone up. */
1481	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce, RT_INDEFINITE_WAIT);
1482	AssertLogRelRC(rc);
1483	Assert(!pVM->vmm.s.fRendezvousRecursion);
1484	}
1485	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1486	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1487	{
1488	/* Wait for our turn. */
1489	for (;;)
1490	{
1491	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1492	AssertLogRelRC(rc);
1493	if (!pVM->vmm.s.fRendezvousRecursion)
1494	break;
1495	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1496	}
1497	}
1498	else
1499	{
1500	Assert((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE);
1501
1502	/*
1503	* The execute once is handled specially to optimize the code flow.
1504	*
1505	* The last EMT to arrive will perform the callback and the other
1506	* EMTs will wait on the Done/DoneCaller semaphores (instead of
1507	* the EnterOneByOne/AllAtOnce) in the meanwhile. When the callback
1508	* returns, that EMT will initiate the normal return sequence.
1509	*/
1510	if (!fIsCaller)
1511	{
1512	for (;;)
1513	{
1514	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1515	AssertLogRelRC(rc);
1516	if (!pVM->vmm.s.fRendezvousRecursion)
1517	break;
1518	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1519	}
1520
1521	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1522	}
1523	return VINF_SUCCESS;
1524	}
1525	}
1526	else
1527	{
1528	/*
1529	* All EMTs are waiting, clear the FF and take action according to the
1530	* execution method.
1531	*/
1532	VM_FF_CLEAR(pVM, VM_FF_EMT_RENDEZVOUS);
1533
1534	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1535	{
1536	/* Wake up everyone. */
1537	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
1538	AssertLogRelRC(rc);
1539	}
1540	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1541	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1542	{
1543	/* Figure out who to wake up and wake it up. If it's ourself, then
1544	it's easy otherwise wait for our turn. */
1545	VMCPUID iFirst = (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1546	? 0
1547	: pVM->cCpus - 1U;
1548	if (pVCpu->idCpu != iFirst)
1549	{
1550	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iFirst]);
1551	AssertLogRelRC(rc);
1552	for (;;)
1553	{
1554	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1555	AssertLogRelRC(rc);
1556	if (!pVM->vmm.s.fRendezvousRecursion)
1557	break;
1558	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1559	}
1560	}
1561	}
1562	/* else: execute the handler on the current EMT and wake up one or more threads afterwards. */
1563	}
1564
1565
1566	/*
1567	* Do the callback and update the status if necessary.
1568	*/
1569	if ( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1570	\|\| RT_SUCCESS(ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus)) )
1571	{
1572	VBOXSTRICTRC rcStrict2 = pfnRendezvous(pVM, pVCpu, pvUser);
1573	if (rcStrict2 != VINF_SUCCESS)
1574	{
1575	AssertLogRelMsg( rcStrict2 <= VINF_SUCCESS
1576	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1577	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)));
1578	int32_t i32RendezvousStatus;
1579	do
1580	{
1581	i32RendezvousStatus = ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus);
1582	if ( rcStrict2 == i32RendezvousStatus
1583	\|\| RT_FAILURE(i32RendezvousStatus)
1584	\|\| ( i32RendezvousStatus != VINF_SUCCESS
1585	&& rcStrict2 > i32RendezvousStatus))
1586	break;
1587	} while (!ASMAtomicCmpXchgS32(&pVM->vmm.s.i32RendezvousStatus, VBOXSTRICTRC_VAL(rcStrict2), i32RendezvousStatus));
1588	}
1589	}
1590
1591	/*
1592	* Increment the done counter and take action depending on whether we're
1593	* the last to finish callback execution.
1594	*/
1595	uint32_t cDone = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsDone);
1596	if ( cDone != pVM->cCpus
1597	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE)
1598	{
1599	/* Signal the next EMT? */
1600	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1601	{
1602	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1603	AssertLogRelRC(rc);
1604	}
1605	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1606	{
1607	Assert(cDone == pVCpu->idCpu + 1U);
1608	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu + 1U]);
1609	AssertLogRelRC(rc);
1610	}
1611	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1612	{
1613	Assert(pVM->cCpus - cDone == pVCpu->idCpu);
1614	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVM->cCpus - cDone - 1U]);
1615	AssertLogRelRC(rc);
1616	}
1617
1618	/* Wait for the rest to finish (the caller waits on hEvtRendezvousDoneCaller). */
1619	if (!fIsCaller)
1620	{
1621	for (;;)
1622	{
1623	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1624	AssertLogRelRC(rc);
1625	if (!pVM->vmm.s.fRendezvousRecursion)
1626	break;
1627	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1628	}
1629	}
1630	}
1631	else
1632	{
1633	/* Callback execution is all done, tell the rest to return. */
1634	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1635	AssertLogRelRC(rc);
1636	}
1637
1638	if (!fIsCaller)
1639	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1640	return rcStrictRecursion;
1641	}
1642
1643
1644	/**
1645	* Called in response to VM_FF_EMT_RENDEZVOUS.
1646	*
1647	* @returns VBox strict status code - EM scheduling. No errors will be returned
1648	* here, nor will any non-EM scheduling status codes be returned.
1649	*
1650	* @param pVM The cross context VM structure.
1651	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1652	*
1653	* @thread EMT
1654	*/
1655	VMMR3_INT_DECL(int) VMMR3EmtRendezvousFF(PVM pVM, PVMCPU pVCpu)
1656	{
1657	Assert(!pVCpu->vmm.s.fInRendezvous);
1658	Log(("VMMR3EmtRendezvousFF: EMT%#u\n", pVCpu->idCpu));
1659	pVCpu->vmm.s.fInRendezvous = true;
1660	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1661	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1662	pVCpu->vmm.s.fInRendezvous = false;
1663	Log(("VMMR3EmtRendezvousFF: EMT%#u returns %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
1664	return VBOXSTRICTRC_TODO(rcStrict);
1665	}
1666
1667
1668	/**
1669	* Helper for resetting an single wakeup event sempahore.
1670	*
1671	* @returns VERR_TIMEOUT on success, RTSemEventWait status otherwise.
1672	* @param hEvt The event semaphore to reset.
1673	*/
1674	static int vmmR3HlpResetEvent(RTSEMEVENT hEvt)
1675	{
1676	for (uint32_t cLoops = 0; ; cLoops++)
1677	{
1678	int rc = RTSemEventWait(hEvt, 0 /cMsTimeout/);
1679	if (rc != VINF_SUCCESS \|\| cLoops > _4K)
1680	return rc;
1681	}
1682	}
1683
1684
1685	/**
1686	* Worker for VMMR3EmtRendezvous that handles recursion.
1687	*
1688	* @returns VBox strict status code. This will be the first error,
1689	* VINF_SUCCESS, or an EM scheduling status code.
1690	*
1691	* @param pVM The cross context VM structure.
1692	* @param pVCpu The cross context virtual CPU structure of the
1693	* calling EMT.
1694	* @param fFlags Flags indicating execution methods. See
1695	* grp_VMMR3EmtRendezvous_fFlags.
1696	* @param pfnRendezvous The callback.
1697	* @param pvUser User argument for the callback.
1698	*
1699	* @thread EMT(pVCpu)
1700	*/
1701	static VBOXSTRICTRC vmmR3EmtRendezvousRecursive(PVM pVM, PVMCPU pVCpu, uint32_t fFlags,
1702	PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1703	{
1704	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d\n", fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions));
1705	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1706	Assert(pVCpu->vmm.s.fInRendezvous);
1707
1708	/*
1709	* Save the current state.
1710	*/
1711	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1712	uint32_t const cParentDone = pVM->vmm.s.cRendezvousEmtsDone;
1713	int32_t const iParentStatus = pVM->vmm.s.i32RendezvousStatus;
1714	PFNVMMEMTRENDEZVOUS const pfnParent = pVM->vmm.s.pfnRendezvous;
1715	void * const pvParentUser = pVM->vmm.s.pvRendezvousUser;
1716
1717	/*
1718	* Check preconditions and save the current state.
1719	*/
1720	AssertReturn( (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1721	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1722	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1723	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1724	VERR_INTERNAL_ERROR);
1725	AssertReturn(pVM->vmm.s.cRendezvousEmtsEntered == pVM->cCpus, VERR_INTERNAL_ERROR_2);
1726	AssertReturn(pVM->vmm.s.cRendezvousEmtsReturned == 0, VERR_INTERNAL_ERROR_3);
1727
1728	/*
1729	* Reset the recursion prep and pop semaphores.
1730	*/
1731	int rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1732	AssertLogRelRCReturn(rc, rc);
1733	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1734	AssertLogRelRCReturn(rc, rc);
1735	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1736	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1737	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1738	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1739
1740	/*
1741	* Usher the other thread into the recursion routine.
1742	*/
1743	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush, 0);
1744	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, true);
1745
1746	uint32_t cLeft = pVM->cCpus - (cParentDone + 1U);
1747	if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1748	while (cLeft-- > 0)
1749	{
1750	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1751	AssertLogRelRC(rc);
1752	}
1753	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1754	{
1755	Assert(cLeft == pVM->cCpus - (pVCpu->idCpu + 1U));
1756	for (VMCPUID iCpu = pVCpu->idCpu + 1U; iCpu < pVM->cCpus; iCpu++)
1757	{
1758	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu]);
1759	AssertLogRelRC(rc);
1760	}
1761	}
1762	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1763	{
1764	Assert(cLeft == pVCpu->idCpu);
1765	for (VMCPUID iCpu = pVCpu->idCpu; iCpu > 0; iCpu--)
1766	{
1767	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu - 1U]);
1768	AssertLogRelRC(rc);
1769	}
1770	}
1771	else
1772	AssertLogRelReturn((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1773	VERR_INTERNAL_ERROR_4);
1774
1775	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1776	AssertLogRelRC(rc);
1777	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1778	AssertLogRelRC(rc);
1779
1780
1781	/*
1782	* Wait for the EMTs to wake up and get out of the parent rendezvous code.
1783	*/
1784	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) != pVM->cCpus)
1785	{
1786	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPushCaller, RT_INDEFINITE_WAIT);
1787	AssertLogRelRC(rc);
1788	}
1789
1790	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, false);
1791
1792	/*
1793	* Clear the slate and setup the new rendezvous.
1794	*/
1795	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1796	{
1797	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1798	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1799	}
1800	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1801	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1802	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1803	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1804
1805	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
1806	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
1807	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1808	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
1809	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
1810	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
1811	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
1812	ASMAtomicIncU32(&pVM->vmm.s.cRendezvousRecursions);
1813
1814	/*
1815	* We're ready to go now, do normal rendezvous processing.
1816	*/
1817	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1818	AssertLogRelRC(rc);
1819
1820	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /fIsCaller/, fFlags, pfnRendezvous, pvUser);
1821
1822	/*
1823	* The caller waits for the other EMTs to be done, return and waiting on the
1824	* pop semaphore.
1825	*/
1826	for (;;)
1827	{
1828	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
1829	AssertLogRelRC(rc);
1830	if (!pVM->vmm.s.fRendezvousRecursion)
1831	break;
1832	rcStrict = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict);
1833	}
1834
1835	/*
1836	* Get the return code and merge it with the above recursion status.
1837	*/
1838	VBOXSTRICTRC rcStrict2 = pVM->vmm.s.i32RendezvousStatus;
1839	if ( rcStrict2 != VINF_SUCCESS
1840	&& ( rcStrict == VINF_SUCCESS
1841	\|\| rcStrict > rcStrict2))
1842	rcStrict = rcStrict2;
1843
1844	/*
1845	* Restore the parent rendezvous state.
1846	*/
1847	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1848	{
1849	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1850	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1851	}
1852	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1853	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1854	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1855	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1856
1857	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, pVM->cCpus);
1858	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1859	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, cParentDone);
1860	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, iParentStatus);
1861	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fParentFlags);
1862	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvParentUser);
1863	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnParent);
1864
1865	/*
1866	* Usher the other EMTs back to their parent recursion routine, waiting
1867	* for them to all get there before we return (makes sure they've been
1868	* scheduled and are past the pop event sem, see below).
1869	*/
1870	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop, 0);
1871	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1872	AssertLogRelRC(rc);
1873
1874	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) != pVM->cCpus)
1875	{
1876	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPopCaller, RT_INDEFINITE_WAIT);
1877	AssertLogRelRC(rc);
1878	}
1879
1880	/*
1881	* We must reset the pop semaphore on the way out (doing the pop caller too,
1882	* just in case). The parent may be another recursion.
1883	*/
1884	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop); AssertLogRelRC(rc);
1885	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1886
1887	ASMAtomicDecU32(&pVM->vmm.s.cRendezvousRecursions);
1888
1889	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d returns %Rrc\n",
1890	fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions, VBOXSTRICTRC_VAL(rcStrict)));
1891	return rcStrict;
1892	}
1893
1894
1895	/**
1896	* EMT rendezvous.
1897	*
1898	* Gathers all the EMTs and execute some code on each of them, either in a one
1899	* by one fashion or all at once.
1900	*
1901	* @returns VBox strict status code. This will be the first error,
1902	* VINF_SUCCESS, or an EM scheduling status code.
1903	*
1904	* @retval VERR_DEADLOCK if recursion is attempted using a rendezvous type that
1905	* doesn't support it or if the recursion is too deep.
1906	*
1907	* @param pVM The cross context VM structure.
1908	* @param fFlags Flags indicating execution methods. See
1909	* grp_VMMR3EmtRendezvous_fFlags. The one-by-one,
1910	* descending and ascending rendezvous types support
1911	* recursion from inside @a pfnRendezvous.
1912	* @param pfnRendezvous The callback.
1913	* @param pvUser User argument for the callback.
1914	*
1915	* @thread Any.
1916	*/
1917	VMMR3DECL(int) VMMR3EmtRendezvous(PVM pVM, uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1918	{
1919	/*
1920	* Validate input.
1921	*/
1922	AssertReturn(pVM, VERR_INVALID_VM_HANDLE);
1923	AssertMsg( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_INVALID
1924	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) <= VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1925	&& !(fFlags & ~VMMEMTRENDEZVOUS_FLAGS_VALID_MASK), ("%#x\n", fFlags));
1926	AssertMsg( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1927	\|\| ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE
1928	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE),
1929	("type %u\n", fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK));
1930
1931	VBOXSTRICTRC rcStrict;
1932	PVMCPU pVCpu = VMMGetCpu(pVM);
1933	if (!pVCpu)
1934	{
1935	/*
1936	* Forward the request to an EMT thread.
1937	*/
1938	Log(("VMMR3EmtRendezvous: %#x non-EMT\n", fFlags));
1939	if (!(fFlags & VMMEMTRENDEZVOUS_FLAGS_PRIORITY))
1940	rcStrict = VMR3ReqCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1941	else
1942	rcStrict = VMR3ReqPriorityCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1943	Log(("VMMR3EmtRendezvous: %#x non-EMT returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1944	}
1945	else if ( pVM->cCpus == 1
1946	\|\| ( pVM->enmVMState == VMSTATE_DESTROYING
1947	&& VMR3GetActiveEmts(pVM->pUVM) < pVM->cCpus ) )
1948	{
1949	/*
1950	* Shortcut for the single EMT case.
1951	*
1952	* We also ends up here if EMT(0) (or others) tries to issue a rendezvous
1953	* during vmR3Destroy after other emulation threads have started terminating.
1954	*/
1955	if (!pVCpu->vmm.s.fInRendezvous)
1956	{
1957	Log(("VMMR3EmtRendezvous: %#x EMT (uni)\n", fFlags));
1958	pVCpu->vmm.s.fInRendezvous = true;
1959	pVM->vmm.s.fRendezvousFlags = fFlags;
1960	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1961	pVCpu->vmm.s.fInRendezvous = false;
1962	}
1963	else
1964	{
1965	/* Recursion. Do the same checks as in the SMP case. */
1966	Log(("VMMR3EmtRendezvous: %#x EMT (uni), recursion depth=%d\n", fFlags, pVM->vmm.s.cRendezvousRecursions));
1967	uint32_t fType = pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK;
1968	AssertLogRelReturn( !pVCpu->vmm.s.fInRendezvous
1969	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1970	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1971	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1972	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
1973	, VERR_DEADLOCK);
1974
1975	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1976	pVM->vmm.s.cRendezvousRecursions++;
1977	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1978	pVM->vmm.s.fRendezvousFlags = fFlags;
1979
1980	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1981
1982	pVM->vmm.s.fRendezvousFlags = fParentFlags;
1983	pVM->vmm.s.cRendezvousRecursions--;
1984	}
1985	Log(("VMMR3EmtRendezvous: %#x EMT (uni) returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1986	}
1987	else
1988	{
1989	/*
1990	* Spin lock. If busy, check for recursion, if not recursing wait for
1991	* the other EMT to finish while keeping a lookout for the RENDEZVOUS FF.
1992	*/
1993	int rc;
1994	rcStrict = VINF_SUCCESS;
1995	if (RT_UNLIKELY(!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0)))
1996	{
1997	/* Allow recursion in some cases. */
1998	if ( pVCpu->vmm.s.fInRendezvous
1999	&& ( (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2000	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2001	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2002	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
2003	))
2004	return VBOXSTRICTRC_TODO(vmmR3EmtRendezvousRecursive(pVM, pVCpu, fFlags, pfnRendezvous, pvUser));
2005
2006	AssertLogRelMsgReturn(!pVCpu->vmm.s.fInRendezvous, ("fRendezvousFlags=%#x\n", pVM->vmm.s.fRendezvousFlags),
2007	VERR_DEADLOCK);
2008
2009	Log(("VMMR3EmtRendezvous: %#x EMT#%u, waiting for lock...\n", fFlags, pVCpu->idCpu));
2010	while (!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0))
2011	{
2012	if (VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS))
2013	{
2014	rc = VMMR3EmtRendezvousFF(pVM, pVCpu);
2015	if ( rc != VINF_SUCCESS
2016	&& ( rcStrict == VINF_SUCCESS
2017	\|\| rcStrict > rc))
2018	rcStrict = rc;
2019	/** @todo Perhaps deal with termination here? */
2020	}
2021	ASMNopPause();
2022	}
2023	}
2024
2025	Log(("VMMR3EmtRendezvous: %#x EMT#%u\n", fFlags, pVCpu->idCpu));
2026	Assert(!VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS));
2027	Assert(!pVCpu->vmm.s.fInRendezvous);
2028	pVCpu->vmm.s.fInRendezvous = true;
2029
2030	/*
2031	* Clear the slate and setup the rendezvous. This is a semaphore ping-pong orgy. :-)
2032	*/
2033	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2034	{
2035	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i], 0);
2036	AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2037	}
2038	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2039	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2040	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2041	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2042	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
2043	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
2044	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2045	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
2046	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
2047	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
2048	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
2049
2050	/*
2051	* Set the FF and poke the other EMTs.
2052	*/
2053	VM_FF_SET(pVM, VM_FF_EMT_RENDEZVOUS);
2054	VMR3NotifyGlobalFFU(pVM->pUVM, VMNOTIFYFF_FLAGS_POKE);
2055
2056	/*
2057	* Do the same ourselves.
2058	*/
2059	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /* fIsCaller */, fFlags, pfnRendezvous, pvUser);
2060
2061	/*
2062	* The caller waits for the other EMTs to be done and return before doing
2063	* the cleanup. This makes away with wakeup / reset races we would otherwise
2064	* risk in the multiple release event semaphore code (hEvtRendezvousDoneCaller).
2065	*/
2066	for (;;)
2067	{
2068	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
2069	AssertLogRelRC(rc);
2070	if (!pVM->vmm.s.fRendezvousRecursion)
2071	break;
2072	rcStrict2 = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict2);
2073	}
2074
2075	/*
2076	* Get the return code and clean up a little bit.
2077	*/
2078	VBOXSTRICTRC rcStrict3 = pVM->vmm.s.i32RendezvousStatus;
2079	ASMAtomicWriteNullPtr((void * volatile *)&pVM->vmm.s.pfnRendezvous);
2080
2081	ASMAtomicWriteU32(&pVM->vmm.s.u32RendezvousLock, 0);
2082	pVCpu->vmm.s.fInRendezvous = false;
2083
2084	/*
2085	* Merge rcStrict, rcStrict2 and rcStrict3.
2086	*/
2087	AssertRC(VBOXSTRICTRC_VAL(rcStrict));
2088	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
2089	if ( rcStrict2 != VINF_SUCCESS
2090	&& ( rcStrict == VINF_SUCCESS
2091	\|\| rcStrict > rcStrict2))
2092	rcStrict = rcStrict2;
2093	if ( rcStrict3 != VINF_SUCCESS
2094	&& ( rcStrict == VINF_SUCCESS
2095	\|\| rcStrict > rcStrict3))
2096	rcStrict = rcStrict3;
2097	Log(("VMMR3EmtRendezvous: %#x EMT#%u returns %Rrc\n", fFlags, pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
2098	}
2099
2100	AssertLogRelMsgReturn( rcStrict <= VINF_SUCCESS
2101	\|\| (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST),
2102	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
2103	VERR_IPE_UNEXPECTED_INFO_STATUS);
2104	return VBOXSTRICTRC_VAL(rcStrict);
2105	}
2106
2107
2108	/**
2109	* Interface for vmR3SetHaltMethodU.
2110	*
2111	* @param pVCpu The cross context virtual CPU structure of the
2112	* calling EMT.
2113	* @param fMayHaltInRing0 The new state.
2114	* @param cNsSpinBlockThreshold The spin-vs-blocking threashold.
2115	* @thread EMT(pVCpu)
2116	*
2117	* @todo Move the EMT handling to VMM (or EM). I soooooo regret that VM
2118	* component.
2119	*/
2120	VMMR3_INT_DECL(void) VMMR3SetMayHaltInRing0(PVMCPU pVCpu, bool fMayHaltInRing0, uint32_t cNsSpinBlockThreshold)
2121	{
2122	pVCpu->vmm.s.fMayHaltInRing0 = fMayHaltInRing0;
2123	pVCpu->vmm.s.cNsSpinBlockThreshold = cNsSpinBlockThreshold;
2124	}
2125
2126
2127	/**
2128	* Read from the ring 0 jump buffer stack.
2129	*
2130	* @returns VBox status code.
2131	*
2132	* @param pVM The cross context VM structure.
2133	* @param idCpu The ID of the source CPU context (for the address).
2134	* @param R0Addr Where to start reading.
2135	* @param pvBuf Where to store the data we've read.
2136	* @param cbRead The number of bytes to read.
2137	*/
2138	VMMR3_INT_DECL(int) VMMR3ReadR0Stack(PVM pVM, VMCPUID idCpu, RTHCUINTPTR R0Addr, void *pvBuf, size_t cbRead)
2139	{
2140	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
2141	AssertReturn(pVCpu, VERR_INVALID_PARAMETER);
2142	AssertReturn(cbRead < ~(size_t)0 / 2, VERR_INVALID_PARAMETER);
2143
2144	int rc;
2145	#ifdef VMM_R0_SWITCH_STACK
2146	RTHCUINTPTR off = R0Addr - MMHyperCCToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
2147	#else
2148	RTHCUINTPTR off = pVCpu->vmm.s.CallRing3JmpBufR0.cbSavedStack - (pVCpu->vmm.s.CallRing3JmpBufR0.SpCheck - R0Addr);
2149	#endif
2150	if ( off < VMM_STACK_SIZE
2151	&& off + cbRead <= VMM_STACK_SIZE)
2152	{
2153	memcpy(pvBuf, &pVCpu->vmm.s.pbEMTStackR3[off], cbRead);
2154	rc = VINF_SUCCESS;
2155	}
2156	else
2157	rc = VERR_INVALID_POINTER;
2158
2159	/* Supply the setjmp return RIP/EIP. */
2160	if ( pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation + sizeof(RTR0UINTPTR) > R0Addr
2161	&& pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation < R0Addr + cbRead)
2162	{
2163	uint8_t const pbSrc = (uint8_t const )&pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue;
2164	size_t cbSrc = sizeof(pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue);
2165	size_t offDst = 0;
2166	if (R0Addr < pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2167	offDst = pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation - R0Addr;
2168	else if (R0Addr > pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2169	{
2170	size_t offSrc = R0Addr - pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation;
2171	Assert(offSrc < cbSrc);
2172	pbSrc -= offSrc;
2173	cbSrc -= offSrc;
2174	}
2175	if (cbSrc > cbRead - offDst)
2176	cbSrc = cbRead - offDst;
2177	memcpy((uint8_t *)pvBuf + offDst, pbSrc, cbSrc);
2178
2179	if (cbSrc == cbRead)
2180	rc = VINF_SUCCESS;
2181	}
2182
2183	return rc;
2184	}
2185
2186
2187	/**
2188	* Used by the DBGF stack unwinder to initialize the register state.
2189	*
2190	* @param pUVM The user mode VM handle.
2191	* @param idCpu The ID of the CPU being unwound.
2192	* @param pState The unwind state to initialize.
2193	*/
2194	VMMR3_INT_DECL(void) VMMR3InitR0StackUnwindState(PUVM pUVM, VMCPUID idCpu, struct RTDBGUNWINDSTATE *pState)
2195	{
2196	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, idCpu);
2197	AssertReturnVoid(pVCpu);
2198
2199	/*
2200	* Locate the resume point on the stack.
2201	*/
2202	#ifdef VMM_R0_SWITCH_STACK
2203	uintptr_t off = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume - MMHyperCCToR0(pVCpu->pVMR3, pVCpu->vmm.s.pbEMTStackR3);
2204	AssertReturnVoid(off < VMM_STACK_SIZE);
2205	#else
2206	uintptr_t off = 0;
2207	#endif
2208
2209	#ifdef RT_ARCH_AMD64
2210	/*
2211	* This code must match the .resume stuff in VMMR0JmpA-amd64.asm exactly.
2212	*/
2213	# ifdef VBOX_STRICT
2214	Assert((uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2215	off += 8; /* RESUME_MAGIC */
2216	# endif
2217	# ifdef RT_OS_WINDOWS
2218	off += 0xa0; /* XMM6 thru XMM15 */
2219	# endif
2220	pState->u.x86.uRFlags = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2221	off += 8;
2222	pState->u.x86.auRegs[X86_GREG_xBX] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2223	off += 8;
2224	# ifdef RT_OS_WINDOWS
2225	pState->u.x86.auRegs[X86_GREG_xSI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2226	off += 8;
2227	pState->u.x86.auRegs[X86_GREG_xDI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2228	off += 8;
2229	# endif
2230	pState->u.x86.auRegs[X86_GREG_x12] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2231	off += 8;
2232	pState->u.x86.auRegs[X86_GREG_x13] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2233	off += 8;
2234	pState->u.x86.auRegs[X86_GREG_x14] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2235	off += 8;
2236	pState->u.x86.auRegs[X86_GREG_x15] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2237	off += 8;
2238	pState->u.x86.auRegs[X86_GREG_xBP] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2239	off += 8;
2240	pState->uPc = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2241	off += 8;
2242
2243	#elif defined(RT_ARCH_X86)
2244	/*
2245	* This code must match the .resume stuff in VMMR0JmpA-x86.asm exactly.
2246	*/
2247	# ifdef VBOX_STRICT
2248	Assert((uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2249	off += 4; /* RESUME_MAGIC */
2250	# endif
2251	pState->u.x86.uRFlags = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2252	off += 4;
2253	pState->u.x86.auRegs[X86_GREG_xBX] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2254	off += 4;
2255	pState->u.x86.auRegs[X86_GREG_xSI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2256	off += 4;
2257	pState->u.x86.auRegs[X86_GREG_xDI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2258	off += 4;
2259	pState->u.x86.auRegs[X86_GREG_xBP] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2260	off += 4;
2261	pState->uPc = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2262	off += 4;
2263	#else
2264	# error "Port me"
2265	#endif
2266
2267	/*
2268	* This is all we really need here, though the above helps if the assembly
2269	* doesn't contain unwind info (currently only on win/64, so that is useful).
2270	*/
2271	pState->u.x86.auRegs[X86_GREG_xBP] = pVCpu->vmm.s.CallRing3JmpBufR0.SavedEbp;
2272	pState->u.x86.auRegs[X86_GREG_xSP] = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume;
2273	}
2274
2275
2276	/**
2277	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2278	*
2279	* @returns VBox status code.
2280	* @param pVM The cross context VM structure.
2281	* @param uOperation Operation to execute.
2282	* @param u64Arg Constant argument.
2283	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2284	* details.
2285	*/
2286	VMMR3DECL(int) VMMR3CallR0(PVM pVM, uint32_t uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2287	{
2288	PVMCPU pVCpu = VMMGetCpu(pVM);
2289	AssertReturn(pVCpu, VERR_VM_THREAD_NOT_EMT);
2290	return VMMR3CallR0Emt(pVM, pVCpu, (VMMR0OPERATION)uOperation, u64Arg, pReqHdr);
2291	}
2292
2293
2294	/**
2295	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2296	*
2297	* @returns VBox status code.
2298	* @param pVM The cross context VM structure.
2299	* @param pVCpu The cross context VM structure.
2300	* @param enmOperation Operation to execute.
2301	* @param u64Arg Constant argument.
2302	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2303	* details.
2304	*/
2305	VMMR3_INT_DECL(int) VMMR3CallR0Emt(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2306	{
2307	int rc;
2308	for (;;)
2309	{
2310	#ifdef NO_SUPCALLR0VMM
2311	rc = VERR_GENERAL_FAILURE;
2312	#else
2313	rc = SUPR3CallVMMR0Ex(VMCC_GET_VMR0_FOR_CALL(pVM), pVCpu->idCpu, enmOperation, u64Arg, pReqHdr);
2314	#endif
2315	/*
2316	* Flush the logs.
2317	*/
2318	#ifdef LOG_ENABLED
2319	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
2320	#endif
2321	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
2322	if (rc != VINF_VMM_CALL_HOST)
2323	break;
2324	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2325	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
2326	break;
2327	/* Resume R0 */
2328	}
2329
2330	AssertLogRelMsgReturn(rc == VINF_SUCCESS \|\| RT_FAILURE(rc),
2331	("enmOperation=%u rc=%Rrc\n", enmOperation, rc),
2332	VERR_IPE_UNEXPECTED_INFO_STATUS);
2333	return rc;
2334	}
2335
2336
2337	/**
2338	* Service a call to the ring-3 host code.
2339	*
2340	* @returns VBox status code.
2341	* @param pVM The cross context VM structure.
2342	* @param pVCpu The cross context virtual CPU structure.
2343	* @remarks Careful with critsects.
2344	*/
2345	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu)
2346	{
2347	/*
2348	* We must also check for pending critsect exits or else we can deadlock
2349	* when entering other critsects here.
2350	*/
2351	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PDM_CRITSECT))
2352	PDMCritSectBothFF(pVCpu);
2353
2354	switch (pVCpu->vmm.s.enmCallRing3Operation)
2355	{
2356	/*
2357	* Acquire a critical section.
2358	*/
2359	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
2360	{
2361	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectEnterEx((PPDMCRITSECT)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2362	true /fCallRing3/);
2363	break;
2364	}
2365
2366	/*
2367	* Enter a r/w critical section exclusively.
2368	*/
2369	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_EXCL:
2370	{
2371	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterExclEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2372	true /fCallRing3/);
2373	break;
2374	}
2375
2376	/*
2377	* Enter a r/w critical section shared.
2378	*/
2379	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_SHARED:
2380	{
2381	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterSharedEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2382	true /fCallRing3/);
2383	break;
2384	}
2385
2386	/*
2387	* Acquire the PDM lock.
2388	*/
2389	case VMMCALLRING3_PDM_LOCK:
2390	{
2391	pVCpu->vmm.s.rcCallRing3 = PDMR3LockCall(pVM);
2392	break;
2393	}
2394
2395	/*
2396	* Grow the PGM pool.
2397	*/
2398	case VMMCALLRING3_PGM_POOL_GROW:
2399	{
2400	pVCpu->vmm.s.rcCallRing3 = PGMR3PoolGrow(pVM);
2401	break;
2402	}
2403
2404	/*
2405	* Maps an page allocation chunk into ring-3 so ring-0 can use it.
2406	*/
2407	case VMMCALLRING3_PGM_MAP_CHUNK:
2408	{
2409	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysChunkMap(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2410	break;
2411	}
2412
2413	/*
2414	* Allocates more handy pages.
2415	*/
2416	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
2417	{
2418	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateHandyPages(pVM);
2419	break;
2420	}
2421
2422	/*
2423	* Allocates a large page.
2424	*/
2425	case VMMCALLRING3_PGM_ALLOCATE_LARGE_HANDY_PAGE:
2426	{
2427	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateLargeHandyPage(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2428	break;
2429	}
2430
2431	/*
2432	* Acquire the PGM lock.
2433	*/
2434	case VMMCALLRING3_PGM_LOCK:
2435	{
2436	pVCpu->vmm.s.rcCallRing3 = PGMR3LockCall(pVM);
2437	break;
2438	}
2439
2440	/*
2441	* Acquire the MM hypervisor heap lock.
2442	*/
2443	case VMMCALLRING3_MMHYPER_LOCK:
2444	{
2445	pVCpu->vmm.s.rcCallRing3 = MMR3LockCall(pVM);
2446	break;
2447	}
2448
2449	#ifdef VBOX_WITH_REM
2450	/*
2451	* Flush REM handler notifications.
2452	*/
2453	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
2454	{
2455	REMR3ReplayHandlerNotifications(pVM);
2456	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2457	break;
2458	}
2459	#endif
2460
2461	/*
2462	* This is a noop. We just take this route to avoid unnecessary
2463	* tests in the loops.
2464	*/
2465	case VMMCALLRING3_VMM_LOGGER_FLUSH:
2466	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2467	LogAlways(("FLUSH\n"));
2468	break;
2469
2470	/*
2471	* Set the VM error message.
2472	*/
2473	case VMMCALLRING3_VM_SET_ERROR:
2474	VMR3SetErrorWorker(pVM);
2475	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2476	break;
2477
2478	/*
2479	* Set the VM runtime error message.
2480	*/
2481	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
2482	pVCpu->vmm.s.rcCallRing3 = VMR3SetRuntimeErrorWorker(pVM);
2483	break;
2484
2485	/*
2486	* Signal a ring 0 hypervisor assertion.
2487	* Cancel the longjmp operation that's in progress.
2488	*/
2489	case VMMCALLRING3_VM_R0_ASSERTION:
2490	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2491	pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call = false;
2492	#ifdef RT_ARCH_X86
2493	pVCpu->vmm.s.CallRing3JmpBufR0.eip = 0;
2494	#else
2495	pVCpu->vmm.s.CallRing3JmpBufR0.rip = 0;
2496	#endif
2497	#ifdef VMM_R0_SWITCH_STACK
2498	(uint64_t )pVCpu->vmm.s.pbEMTStackR3 = 0; /* clear marker */
2499	#endif
2500	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg1));
2501	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg2));
2502	return VERR_VMM_RING0_ASSERTION;
2503
2504	/*
2505	* A forced switch to ring 0 for preemption purposes.
2506	*/
2507	case VMMCALLRING3_VM_R0_PREEMPT:
2508	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2509	break;
2510
2511	default:
2512	AssertMsgFailed(("enmCallRing3Operation=%d\n", pVCpu->vmm.s.enmCallRing3Operation));
2513	return VERR_VMM_UNKNOWN_RING3_CALL;
2514	}
2515
2516	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2517	return VINF_SUCCESS;
2518	}
2519
2520
2521	/**
2522	* Displays the Force action Flags.
2523	*
2524	* @param pVM The cross context VM structure.
2525	* @param pHlp The output helpers.
2526	* @param pszArgs The additional arguments (ignored).
2527	*/
2528	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2529	{
2530	int c;
2531	uint32_t f;
2532	NOREF(pszArgs);
2533
2534	#define PRINT_FLAG(prf,flag) do { \
2535	if (f & (prf##flag)) \
2536	{ \
2537	static const char *s_psz = #flag; \
2538	if (!(c % 6)) \
2539	pHlp->pfnPrintf(pHlp, "%s\n %s", c ? "," : "", s_psz); \
2540	else \
2541	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2542	c++; \
2543	f &= ~(prf##flag); \
2544	} \
2545	} while (0)
2546
2547	#define PRINT_GROUP(prf,grp,sfx) do { \
2548	if (f & (prf##grp##sfx)) \
2549	{ \
2550	static const char *s_psz = #grp; \
2551	if (!(c % 5)) \
2552	pHlp->pfnPrintf(pHlp, "%s %s", c ? ",\n" : " Groups:\n", s_psz); \
2553	else \
2554	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2555	c++; \
2556	} \
2557	} while (0)
2558
2559	/*
2560	* The global flags.
2561	*/
2562	const uint32_t fGlobalForcedActions = pVM->fGlobalForcedActions;
2563	pHlp->pfnPrintf(pHlp, "Global FFs: %#RX32", fGlobalForcedActions);
2564
2565	/* show the flag mnemonics */
2566	c = 0;
2567	f = fGlobalForcedActions;
2568	PRINT_FLAG(VM_FF_,TM_VIRTUAL_SYNC);
2569	PRINT_FLAG(VM_FF_,PDM_QUEUES);
2570	PRINT_FLAG(VM_FF_,PDM_DMA);
2571	PRINT_FLAG(VM_FF_,DBGF);
2572	PRINT_FLAG(VM_FF_,REQUEST);
2573	PRINT_FLAG(VM_FF_,CHECK_VM_STATE);
2574	PRINT_FLAG(VM_FF_,RESET);
2575	PRINT_FLAG(VM_FF_,EMT_RENDEZVOUS);
2576	PRINT_FLAG(VM_FF_,PGM_NEED_HANDY_PAGES);
2577	PRINT_FLAG(VM_FF_,PGM_NO_MEMORY);
2578	PRINT_FLAG(VM_FF_,PGM_POOL_FLUSH_PENDING);
2579	PRINT_FLAG(VM_FF_,REM_HANDLER_NOTIFY);
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@ 80281

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