VMM.cpp@ 80191

Last change on this file since 80191 was 80191, checked in by vboxsync, 5 years ago
VMM/r3: Refactored VMCPU enumeration in preparation that aCpus will be replaced with a pointer array. Removed two raw-mode offset members from the CPUM and CPUMCPU sub-structures. bugref:9217 bugref:9517
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 105.6 KB

Line
1	/* $Id: VMM.cpp 80191 2019-08-08 00:36:57Z 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/vm.h>
131	#include <VBox/vmm/uvm.h>
132
133	#include <VBox/err.h>
134	#include <VBox/param.h>
135	#include <VBox/version.h>
136	#include <VBox/vmm/hm.h>
137	#include <iprt/assert.h>
138	#include <iprt/alloc.h>
139	#include <iprt/asm.h>
140	#include <iprt/time.h>
141	#include <iprt/semaphore.h>
142	#include <iprt/stream.h>
143	#include <iprt/string.h>
144	#include <iprt/stdarg.h>
145	#include <iprt/ctype.h>
146	#include <iprt/x86.h>
147
148
149	/*********************************************************************************************************************************
150	* Defined Constants And Macros *
151	*********************************************************************************************************************************/
152	/** The saved state version. */
153	#define VMM_SAVED_STATE_VERSION 4
154	/** The saved state version used by v3.0 and earlier. (Teleportation) */
155	#define VMM_SAVED_STATE_VERSION_3_0 3
156
157	/** Macro for flushing the ring-0 logging. */
158	#define VMM_FLUSH_R0_LOG(a_pR0Logger, a_pR3Logger) \
159	do { \
160	PVMMR0LOGGER pVmmLogger = (a_pR0Logger); \
161	if (!pVmmLogger \|\| pVmmLogger->Logger.offScratch == 0) \
162	{ /* likely? */ } \
163	else \
164	RTLogFlushR0(a_pR3Logger, &pVmmLogger->Logger); \
165	} while (0)
166
167
168	/*********************************************************************************************************************************
169	* Internal Functions *
170	*********************************************************************************************************************************/
171	static int vmmR3InitStacks(PVM pVM);
172	static int vmmR3InitLoggers(PVM pVM);
173	static void vmmR3InitRegisterStats(PVM pVM);
174	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM);
175	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
176	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, PTMTIMER pTimer, void *pvUser);
177	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
178	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser);
179	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu);
180	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
181
182
183	/**
184	* Initializes the VMM.
185	*
186	* @returns VBox status code.
187	* @param pVM The cross context VM structure.
188	*/
189	VMMR3_INT_DECL(int) VMMR3Init(PVM pVM)
190	{
191	LogFlow(("VMMR3Init\n"));
192
193	/*
194	* Assert alignment, sizes and order.
195	*/
196	AssertCompile(sizeof(pVM->vmm.s) <= sizeof(pVM->vmm.padding));
197	AssertCompile(RT_SIZEOFMEMB(VMCPU, vmm.s) <= RT_SIZEOFMEMB(VMCPU, vmm.padding));
198
199	/*
200	* Init basic VM VMM members.
201	*/
202	pVM->vmm.s.pahEvtRendezvousEnterOrdered = NULL;
203	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
204	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
205	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
206	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
207	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
208	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
209	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
210	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
211
212	/** @cfgm{/YieldEMTInterval, uint32_t, 1, UINT32_MAX, 23, ms}
213	* The EMT yield interval. The EMT yielding is a hack we employ to play a
214	* bit nicer with the rest of the system (like for instance the GUI).
215	*/
216	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "YieldEMTInterval", &pVM->vmm.s.cYieldEveryMillies,
217	23 /* Value arrived at after experimenting with the grub boot prompt. */);
218	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"YieldEMTInterval\", rc=%Rrc\n", rc), rc);
219
220
221	/** @cfgm{/VMM/UsePeriodicPreemptionTimers, boolean, true}
222	* Controls whether we employ per-cpu preemption timers to limit the time
223	* spent executing guest code. This option is not available on all
224	* platforms and we will silently ignore this setting then. If we are
225	* running in VT-x mode, we will use the VMX-preemption timer instead of
226	* this one when possible.
227	*/
228	PCFGMNODE pCfgVMM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "VMM");
229	rc = CFGMR3QueryBoolDef(pCfgVMM, "UsePeriodicPreemptionTimers", &pVM->vmm.s.fUsePeriodicPreemptionTimers, true);
230	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"VMM/UsePeriodicPreemptionTimers\", rc=%Rrc\n", rc), rc);
231
232	/*
233	* Initialize the VMM rendezvous semaphores.
234	*/
235	pVM->vmm.s.pahEvtRendezvousEnterOrdered = (PRTSEMEVENT)MMR3HeapAlloc(pVM, MM_TAG_VMM, sizeof(RTSEMEVENT) * pVM->cCpus);
236	if (!pVM->vmm.s.pahEvtRendezvousEnterOrdered)
237	return VERR_NO_MEMORY;
238	for (VMCPUID i = 0; i < pVM->cCpus; i++)
239	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
240	for (VMCPUID i = 0; i < pVM->cCpus; i++)
241	{
242	rc = RTSemEventCreate(&pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
243	AssertRCReturn(rc, rc);
244	}
245	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousEnterOneByOne);
246	AssertRCReturn(rc, rc);
247	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
248	AssertRCReturn(rc, rc);
249	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousDone);
250	AssertRCReturn(rc, rc);
251	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousDoneCaller);
252	AssertRCReturn(rc, rc);
253	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPush);
254	AssertRCReturn(rc, rc);
255	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPop);
256	AssertRCReturn(rc, rc);
257	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
258	AssertRCReturn(rc, rc);
259	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
260	AssertRCReturn(rc, rc);
261
262	/*
263	* Register the saved state data unit.
264	*/
265	rc = SSMR3RegisterInternal(pVM, "vmm", 1, VMM_SAVED_STATE_VERSION, VMM_STACK_SIZE + sizeof(RTGCPTR),
266	NULL, NULL, NULL,
267	NULL, vmmR3Save, NULL,
268	NULL, vmmR3Load, NULL);
269	if (RT_FAILURE(rc))
270	return rc;
271
272	/*
273	* Register the Ring-0 VM handle with the session for fast ioctl calls.
274	*/
275	rc = SUPR3SetVMForFastIOCtl(pVM->pVMR0);
276	if (RT_FAILURE(rc))
277	return rc;
278
279	/*
280	* Init various sub-components.
281	*/
282	rc = vmmR3InitStacks(pVM);
283	if (RT_SUCCESS(rc))
284	{
285	rc = vmmR3InitLoggers(pVM);
286
287	#ifdef VBOX_WITH_NMI
288	/*
289	* Allocate mapping for the host APIC.
290	*/
291	if (RT_SUCCESS(rc))
292	{
293	rc = MMR3HyperReserve(pVM, PAGE_SIZE, "Host APIC", &pVM->vmm.s.GCPtrApicBase);
294	AssertRC(rc);
295	}
296	#endif
297	if (RT_SUCCESS(rc))
298	{
299	/*
300	* Debug info and statistics.
301	*/
302	DBGFR3InfoRegisterInternal(pVM, "fflags", "Displays the current Forced actions Flags.", vmmR3InfoFF);
303	vmmR3InitRegisterStats(pVM);
304	vmmInitFormatTypes();
305
306	return VINF_SUCCESS;
307	}
308	}
309	/** @todo Need failure cleanup? */
310
311	return rc;
312	}
313
314
315	/**
316	* Allocate & setup the VMM RC stack(s) (for EMTs).
317	*
318	* The stacks are also used for long jumps in Ring-0.
319	*
320	* @returns VBox status code.
321	* @param pVM The cross context VM structure.
322	*
323	* @remarks The optional guard page gets it protection setup up during R3 init
324	* completion because of init order issues.
325	*/
326	static int vmmR3InitStacks(PVM pVM)
327	{
328	int rc = VINF_SUCCESS;
329	#ifdef VMM_R0_SWITCH_STACK
330	uint32_t fFlags = MMHYPER_AONR_FLAGS_KERNEL_MAPPING;
331	#else
332	uint32_t fFlags = 0;
333	#endif
334
335	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
336	{
337	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
338
339	#ifdef VBOX_STRICT_VMM_STACK
340	rc = MMR3HyperAllocOnceNoRelEx(pVM, PAGE_SIZE + VMM_STACK_SIZE + PAGE_SIZE,
341	#else
342	rc = MMR3HyperAllocOnceNoRelEx(pVM, VMM_STACK_SIZE,
343	#endif
344	PAGE_SIZE, MM_TAG_VMM, fFlags, (void **)&pVCpu->vmm.s.pbEMTStackR3);
345	if (RT_SUCCESS(rc))
346	{
347	#ifdef VBOX_STRICT_VMM_STACK
348	pVCpu->vmm.s.pbEMTStackR3 += PAGE_SIZE;
349	#endif
350	pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
351
352	}
353	}
354
355	return rc;
356	}
357
358
359	/**
360	* Initialize the loggers.
361	*
362	* @returns VBox status code.
363	* @param pVM The cross context VM structure.
364	*/
365	static int vmmR3InitLoggers(PVM pVM)
366	{
367	int rc;
368	#define RTLogCalcSizeForR0(cGroups, fFlags) (RT_UOFFSETOF_DYN(VMMR0LOGGER, Logger.afGroups[cGroups]) + PAGE_SIZE)
369
370	/*
371	* Allocate R0 Logger instance (finalized in the relocator).
372	*/
373	#if defined(LOG_ENABLED) && defined(VBOX_WITH_R0_LOGGING)
374	PRTLOGGER pLogger = RTLogDefaultInstance();
375	if (pLogger)
376	{
377	size_t const cbLogger = RTLogCalcSizeForR0(pLogger->cGroups, 0);
378	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
379	{
380	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
381	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
382	(void **)&pVCpu->vmm.s.pR0LoggerR3);
383	if (RT_FAILURE(rc))
384	return rc;
385	pVCpu->vmm.s.pR0LoggerR3->pVM = pVM->pVMR0;
386	//pVCpu->vmm.s.pR0LoggerR3->fCreated = false;
387	pVCpu->vmm.s.pR0LoggerR3->cbLogger = (uint32_t)cbLogger;
388	pVCpu->vmm.s.pR0LoggerR0 = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pR0LoggerR3);
389	}
390	}
391	#endif /* LOG_ENABLED && VBOX_WITH_R0_LOGGING */
392
393	/*
394	* Release logging.
395	*/
396	PRTLOGGER pRelLogger = RTLogRelGetDefaultInstance();
397	if (pRelLogger)
398	{
399	/*
400	* Ring-0 release logger.
401	*/
402	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
403	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
404	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
405
406	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
407	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
408	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
409
410	size_t const cbLogger = RTLogCalcSizeForR0(pRelLogger->cGroups, 0);
411
412	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
413	{
414	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
415	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
416	(void **)&pVCpu->vmm.s.pR0RelLoggerR3);
417	if (RT_FAILURE(rc))
418	return rc;
419	PVMMR0LOGGER pVmmLogger = pVCpu->vmm.s.pR0RelLoggerR3;
420	RTR0PTR R0PtrVmmLogger = MMHyperR3ToR0(pVM, pVmmLogger);
421	pVCpu->vmm.s.pR0RelLoggerR0 = R0PtrVmmLogger;
422	pVmmLogger->pVM = pVM->pVMR0;
423	pVmmLogger->cbLogger = (uint32_t)cbLogger;
424	pVmmLogger->fCreated = false;
425	pVmmLogger->fFlushingDisabled = false;
426	pVmmLogger->fRegistered = false;
427	pVmmLogger->idCpu = idCpu;
428
429	char szR0ThreadName[16];
430	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", idCpu);
431	rc = RTLogCreateForR0(&pVmmLogger->Logger, pVmmLogger->cbLogger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
432	pfnLoggerWrapper, pfnLoggerFlush,
433	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
434	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
435
436	/* We only update the release log instance here. */
437	rc = RTLogCopyGroupsAndFlagsForR0(&pVmmLogger->Logger, R0PtrVmmLogger + RT_UOFFSETOF(VMMR0LOGGER, Logger),
438	pRelLogger, RTLOGFLAGS_BUFFERED, UINT32_MAX);
439	AssertReleaseMsgRCReturn(rc, ("RTLogCopyGroupsAndFlagsForR0 failed! rc=%Rra\n", rc), rc);
440
441	pVmmLogger->fCreated = true;
442	}
443	}
444
445	return VINF_SUCCESS;
446	}
447
448
449	/**
450	* VMMR3Init worker that register the statistics with STAM.
451	*
452	* @param pVM The cross context VM structure.
453	*/
454	static void vmmR3InitRegisterStats(PVM pVM)
455	{
456	RT_NOREF_PV(pVM);
457
458	/*
459	* Statistics.
460	*/
461	STAM_REG(pVM, &pVM->vmm.s.StatRunGC, STAMTYPE_COUNTER, "/VMM/RunGC", STAMUNIT_OCCURENCES, "Number of context switches.");
462	STAM_REG(pVM, &pVM->vmm.s.StatRZRetNormal, STAMTYPE_COUNTER, "/VMM/RZRet/Normal", STAMUNIT_OCCURENCES, "Number of VINF_SUCCESS returns.");
463	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterrupt, STAMTYPE_COUNTER, "/VMM/RZRet/Interrupt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT returns.");
464	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptHyper, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptHyper", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_HYPER returns.");
465	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGuestTrap, STAMTYPE_COUNTER, "/VMM/RZRet/GuestTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_GUEST_TRAP returns.");
466	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitch, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitch", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH returns.");
467	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitchInt, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitchInt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH_INT returns.");
468	STAM_REG(pVM, &pVM->vmm.s.StatRZRetStaleSelector, STAMTYPE_COUNTER, "/VMM/RZRet/StaleSelector", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_STALE_SELECTOR returns.");
469	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIRETTrap, STAMTYPE_COUNTER, "/VMM/RZRet/IRETTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_IRET_TRAP returns.");
470	STAM_REG(pVM, &pVM->vmm.s.StatRZRetEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/Emulate", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION returns.");
471	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/PatchEmulate", STAMUNIT_OCCURENCES, "Number of VINF_PATCH_EMULATE_INSTR returns.");
472	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIORead, STAMTYPE_COUNTER, "/VMM/RZRet/IORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_READ returns.");
473	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_WRITE returns.");
474	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_COMMIT_WRITE returns.");
475	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIORead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ returns.");
476	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_WRITE returns.");
477	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_COMMIT_WRITE returns.");
478	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOReadWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOReadWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ_WRITE returns.");
479	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchRead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchRead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_READ returns.");
480	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_WRITE returns.");
481	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRRead, STAMTYPE_COUNTER, "/VMM/RZRet/MSRRead", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_READ returns.");
482	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MSRWrite", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_WRITE returns.");
483	STAM_REG(pVM, &pVM->vmm.s.StatRZRetLDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/LDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_GDT_FAULT returns.");
484	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/GDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_LDT_FAULT returns.");
485	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/IDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_IDT_FAULT returns.");
486	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTSSFault, STAMTYPE_COUNTER, "/VMM/RZRet/TSSFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_TSS_FAULT returns.");
487	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCSAMTask, STAMTYPE_COUNTER, "/VMM/RZRet/CSAMTask", STAMUNIT_OCCURENCES, "Number of VINF_CSAM_PENDING_ACTION returns.");
488	STAM_REG(pVM, &pVM->vmm.s.StatRZRetSyncCR3, STAMTYPE_COUNTER, "/VMM/RZRet/SyncCR", STAMUNIT_OCCURENCES, "Number of VINF_PGM_SYNC_CR3 returns.");
489	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMisc, STAMTYPE_COUNTER, "/VMM/RZRet/Misc", STAMUNIT_OCCURENCES, "Number of misc returns.");
490	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchInt3, STAMTYPE_COUNTER, "/VMM/RZRet/PatchInt3", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_INT3 returns.");
491	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchPF, STAMTYPE_COUNTER, "/VMM/RZRet/PatchPF", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_PF returns.");
492	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchGP, STAMTYPE_COUNTER, "/VMM/RZRet/PatchGP", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_GP returns.");
493	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchIretIRQ, STAMTYPE_COUNTER, "/VMM/RZRet/PatchIret", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PENDING_IRQ_AFTER_IRET returns.");
494	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRescheduleREM, STAMTYPE_COUNTER, "/VMM/RZRet/ScheduleREM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RESCHEDULE_REM returns.");
495	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Total, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns.");
496	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.");
497	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.");
498	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.");
499	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.");
500	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.");
501	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.");
502	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.");
503	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.");
504	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.");
505	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.");
506	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.");
507	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTimerPending, STAMTYPE_COUNTER, "/VMM/RZRet/TimerPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TIMER_PENDING returns.");
508	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptPending, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_PENDING returns.");
509	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPATMDuplicateFn, STAMTYPE_COUNTER, "/VMM/RZRet/PATMDuplicateFn", STAMUNIT_OCCURENCES, "Number of VINF_PATM_DUPLICATE_FUNCTION returns.");
510	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMChangeMode, STAMTYPE_COUNTER, "/VMM/RZRet/PGMChangeMode", STAMUNIT_OCCURENCES, "Number of VINF_PGM_CHANGE_MODE returns.");
511	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMFlushPending, STAMTYPE_COUNTER, "/VMM/RZRet/PGMFlushPending", STAMUNIT_OCCURENCES, "Number of VINF_PGM_POOL_FLUSH_PENDING returns.");
512	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPendingRequest, STAMTYPE_COUNTER, "/VMM/RZRet/PendingRequest", STAMUNIT_OCCURENCES, "Number of VINF_EM_PENDING_REQUEST returns.");
513	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchTPR, STAMTYPE_COUNTER, "/VMM/RZRet/PatchTPR", STAMUNIT_OCCURENCES, "Number of VINF_EM_HM_PATCH_TPR_INSTR returns.");
514	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCallRing3, STAMTYPE_COUNTER, "/VMM/RZCallR3/Misc", STAMUNIT_OCCURENCES, "Number of Other ring-3 calls.");
515	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_LOCK calls.");
516	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMCritSectEnter, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMCritSectEnter", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_CRITSECT_ENTER calls.");
517	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_LOCK calls.");
518	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMPoolGrow, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMPoolGrow", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_POOL_GROW calls.");
519	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMMapChunk, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMMapChunk", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_MAP_CHUNK calls.");
520	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMAllocHandy, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMAllocHandy", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES calls.");
521	STAM_REG(pVM, &pVM->vmm.s.StatRZCallRemReplay, STAMTYPE_COUNTER, "/VMM/RZCallR3/REMReplay", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS calls.");
522	STAM_REG(pVM, &pVM->vmm.s.StatRZCallLogFlush, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMMLogFlush", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VMM_LOGGER_FLUSH calls.");
523	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMSetError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_ERROR calls.");
524	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetRuntimeError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMRuntimeError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_RUNTIME_ERROR calls.");
525
526	#ifdef VBOX_WITH_STATISTICS
527	for (VMCPUID i = 0; i < pVM->cCpus; i++)
528	{
529	PVMCPU pVCpu = pVM->apCpusR3[i];
530	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);
531	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cbUsedAvg, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Average stack usage.", "/VMM/Stack/CPU%u/Avg", i);
532	STAMR3RegisterF(pVM, &pVCpu->vmm.s.CallRing3JmpBufR0.cUsedTotal, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of stack usages.", "/VMM/Stack/CPU%u/Uses", i);
533	}
534	#endif
535	for (VMCPUID i = 0; i < pVM->cCpus; i++)
536	{
537	PVMCPU pVCpu = pVM->apCpusR3[i];
538	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlock, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlock", i);
539	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOnTime, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOnTime", i);
540	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockOverslept, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockOverslept", i);
541	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltBlockInsomnia, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "", "/PROF/CPU%u/VM/Halt/R0HaltBlockInsomnia", i);
542	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExec, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec", i);
543	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromSpin, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromSpin", i);
544	STAMR3RegisterF(pVM, &pVCpu->vmm.s.StatR0HaltExecFromBlock, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltExec/FromBlock", i);
545	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0Halts, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryCounter", i);
546	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsSucceeded, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistorySucceeded", i);
547	STAMR3RegisterF(pVM, &pVCpu->vmm.s.cR0HaltsToRing3, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "", "/PROF/CPU%u/VM/Halt/R0HaltHistoryToRing3", i);
548	}
549	}
550
551
552	/**
553	* Worker for VMMR3InitR0 that calls ring-0 to do EMT specific initialization.
554	*
555	* @returns VBox status code.
556	* @param pVM The cross context VM structure.
557	* @param pVCpu The cross context per CPU structure.
558	* @thread EMT(pVCpu)
559	*/
560	static DECLCALLBACK(int) vmmR3InitR0Emt(PVM pVM, PVMCPU pVCpu)
561	{
562	return VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_VMMR0_INIT_EMT, 0, NULL);
563	}
564
565
566	/**
567	* Initializes the R0 VMM.
568	*
569	* @returns VBox status code.
570	* @param pVM The cross context VM structure.
571	*/
572	VMMR3_INT_DECL(int) VMMR3InitR0(PVM pVM)
573	{
574	int rc;
575	PVMCPU pVCpu = VMMGetCpu(pVM);
576	Assert(pVCpu && pVCpu->idCpu == 0);
577
578	#ifdef LOG_ENABLED
579	/*
580	* Initialize the ring-0 logger if we haven't done so yet.
581	*/
582	if ( pVCpu->vmm.s.pR0LoggerR3
583	&& !pVCpu->vmm.s.pR0LoggerR3->fCreated)
584	{
585	rc = VMMR3UpdateLoggers(pVM);
586	if (RT_FAILURE(rc))
587	return rc;
588	}
589	#endif
590
591	/*
592	* Call Ring-0 entry with init code.
593	*/
594	for (;;)
595	{
596	#ifdef NO_SUPCALLR0VMM
597	//rc = VERR_GENERAL_FAILURE;
598	rc = VINF_SUCCESS;
599	#else
600	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /idCpu/, VMMR0_DO_VMMR0_INIT, RT_MAKE_U64(VMMGetSvnRev(), vmmGetBuildType()), NULL);
601	#endif
602	/*
603	* Flush the logs.
604	*/
605	#ifdef LOG_ENABLED
606	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
607	#endif
608	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
609	if (rc != VINF_VMM_CALL_HOST)
610	break;
611	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
612	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
613	break;
614	/* Resume R0 */
615	}
616
617	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
618	{
619	LogRel(("VMM: R0 init failed, rc=%Rra\n", rc));
620	if (RT_SUCCESS(rc))
621	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
622	}
623
624	/* Log whether thread-context hooks are used (on Linux this can depend on how the kernel is configured). */
625	if (pVM->apCpusR3[0]->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
626	LogRel(("VMM: Enabled thread-context hooks\n"));
627	else
628	LogRel(("VMM: Thread-context hooks unavailable\n"));
629
630	/* Log RTThreadPreemptIsPendingTrusty() and RTThreadPreemptIsPossible() results. */
631	if (pVM->vmm.s.fIsPreemptPendingApiTrusty)
632	LogRel(("VMM: RTThreadPreemptIsPending() can be trusted\n"));
633	else
634	LogRel(("VMM: Warning! RTThreadPreemptIsPending() cannot be trusted! Need to update kernel info?\n"));
635	if (pVM->vmm.s.fIsPreemptPossible)
636	LogRel(("VMM: Kernel preemption is possible\n"));
637	else
638	LogRel(("VMM: Kernel preemption is not possible it seems\n"));
639
640	/*
641	* Send all EMTs to ring-0 to get their logger initialized.
642	*/
643	for (VMCPUID idCpu = 0; RT_SUCCESS(rc) && idCpu < pVM->cCpus; idCpu++)
644	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)vmmR3InitR0Emt, 2, pVM, pVM->apCpusR3[idCpu]);
645
646	return rc;
647	}
648
649
650	/**
651	* Called when an init phase completes.
652	*
653	* @returns VBox status code.
654	* @param pVM The cross context VM structure.
655	* @param enmWhat Which init phase.
656	*/
657	VMMR3_INT_DECL(int) VMMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
658	{
659	int rc = VINF_SUCCESS;
660
661	switch (enmWhat)
662	{
663	case VMINITCOMPLETED_RING3:
664	{
665	/*
666	* Create the EMT yield timer.
667	*/
668	rc = TMR3TimerCreateInternal(pVM, TMCLOCK_REAL, vmmR3YieldEMT, NULL, "EMT Yielder", &pVM->vmm.s.pYieldTimer);
669	AssertRCReturn(rc, rc);
670
671	rc = TMTimerSetMillies(pVM->vmm.s.pYieldTimer, pVM->vmm.s.cYieldEveryMillies);
672	AssertRCReturn(rc, rc);
673	break;
674	}
675
676	case VMINITCOMPLETED_HM:
677	{
678	/*
679	* Disable the periodic preemption timers if we can use the
680	* VMX-preemption timer instead.
681	*/
682	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
683	&& HMR3IsVmxPreemptionTimerUsed(pVM))
684	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
685	LogRel(("VMM: fUsePeriodicPreemptionTimers=%RTbool\n", pVM->vmm.s.fUsePeriodicPreemptionTimers));
686
687	/*
688	* Last chance for GIM to update its CPUID leaves if it requires
689	* knowledge/information from HM initialization.
690	*/
691	rc = GIMR3InitCompleted(pVM);
692	AssertRCReturn(rc, rc);
693
694	/*
695	* CPUM's post-initialization (print CPUIDs).
696	*/
697	CPUMR3LogCpuIdAndMsrFeatures(pVM);
698	break;
699	}
700
701	default: /* shuts up gcc */
702	break;
703	}
704
705	return rc;
706	}
707
708
709	/**
710	* Terminate the VMM bits.
711	*
712	* @returns VBox status code.
713	* @param pVM The cross context VM structure.
714	*/
715	VMMR3_INT_DECL(int) VMMR3Term(PVM pVM)
716	{
717	PVMCPU pVCpu = VMMGetCpu(pVM);
718	Assert(pVCpu && pVCpu->idCpu == 0);
719
720	/*
721	* Call Ring-0 entry with termination code.
722	*/
723	int rc;
724	for (;;)
725	{
726	#ifdef NO_SUPCALLR0VMM
727	//rc = VERR_GENERAL_FAILURE;
728	rc = VINF_SUCCESS;
729	#else
730	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /idCpu/, VMMR0_DO_VMMR0_TERM, 0, NULL);
731	#endif
732	/*
733	* Flush the logs.
734	*/
735	#ifdef LOG_ENABLED
736	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
737	#endif
738	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
739	if (rc != VINF_VMM_CALL_HOST)
740	break;
741	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
742	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
743	break;
744	/* Resume R0 */
745	}
746	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
747	{
748	LogRel(("VMM: VMMR3Term: R0 term failed, rc=%Rra. (warning)\n", rc));
749	if (RT_SUCCESS(rc))
750	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
751	}
752
753	for (VMCPUID i = 0; i < pVM->cCpus; i++)
754	{
755	RTSemEventDestroy(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
756	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
757	}
758	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
759	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
760	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
761	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
762	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousDone);
763	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
764	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousDoneCaller);
765	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
766	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
767	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
768	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
769	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
770	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
771	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
772	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
773	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
774
775	vmmTermFormatTypes();
776	return rc;
777	}
778
779
780	/**
781	* Applies relocations to data and code managed by this
782	* component. This function will be called at init and
783	* whenever the VMM need to relocate it self inside the GC.
784	*
785	* The VMM will need to apply relocations to the core code.
786	*
787	* @param pVM The cross context VM structure.
788	* @param offDelta The relocation delta.
789	*/
790	VMMR3_INT_DECL(void) VMMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
791	{
792	LogFlow(("VMMR3Relocate: offDelta=%RGv\n", offDelta));
793	RT_NOREF(offDelta);
794
795	/*
796	* Update the logger.
797	*/
798	VMMR3UpdateLoggers(pVM);
799	}
800
801
802	/**
803	* Updates the settings for the RC and R0 loggers.
804	*
805	* @returns VBox status code.
806	* @param pVM The cross context VM structure.
807	*/
808	VMMR3_INT_DECL(int) VMMR3UpdateLoggers(PVM pVM)
809	{
810	int rc = VINF_SUCCESS;
811
812	#ifdef LOG_ENABLED
813	/*
814	* For the ring-0 EMT logger, we use a per-thread logger instance
815	* in ring-0. Only initialize it once.
816	*/
817	PRTLOGGER const pDefault = RTLogDefaultInstance();
818	for (VMCPUID i = 0; i < pVM->cCpus; i++)
819	{
820	PVMCPU pVCpu = pVM->apCpusR3[i];
821	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
822	if (pR0LoggerR3)
823	{
824	if (!pR0LoggerR3->fCreated)
825	{
826	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
827	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
828	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
829
830	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
831	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
832	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
833
834	char szR0ThreadName[16];
835	RTStrPrintf(szR0ThreadName, sizeof(szR0ThreadName), "EMT-%u-R0", i);
836	rc = RTLogCreateForR0(&pR0LoggerR3->Logger, pR0LoggerR3->cbLogger,
837	pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
838	pfnLoggerWrapper, pfnLoggerFlush,
839	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY, szR0ThreadName);
840	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
841
842	pR0LoggerR3->idCpu = i;
843	pR0LoggerR3->fCreated = true;
844	pR0LoggerR3->fFlushingDisabled = false;
845	}
846
847	rc = RTLogCopyGroupsAndFlagsForR0(&pR0LoggerR3->Logger, pVCpu->vmm.s.pR0LoggerR0 + RT_UOFFSETOF(VMMR0LOGGER, Logger),
848	pDefault, RTLOGFLAGS_BUFFERED, UINT32_MAX);
849	AssertRC(rc);
850	}
851	}
852	#else
853	RT_NOREF(pVM);
854	#endif
855
856	return rc;
857	}
858
859
860	/**
861	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg1Weak output.
862	*
863	* @returns Pointer to the buffer.
864	* @param pVM The cross context VM structure.
865	*/
866	VMMR3DECL(const char *) VMMR3GetRZAssertMsg1(PVM pVM)
867	{
868	return pVM->vmm.s.szRing0AssertMsg1;
869	}
870
871
872	/**
873	* Returns the VMCPU of the specified virtual CPU.
874	*
875	* @returns The VMCPU pointer. NULL if @a idCpu or @a pUVM is invalid.
876	*
877	* @param pUVM The user mode VM handle.
878	* @param idCpu The ID of the virtual CPU.
879	*/
880	VMMR3DECL(PVMCPU) VMMR3GetCpuByIdU(PUVM pUVM, RTCPUID idCpu)
881	{
882	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
883	AssertReturn(idCpu < pUVM->cCpus, NULL);
884	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, NULL);
885	return pUVM->pVM->apCpusR3[idCpu];
886	}
887
888
889	/**
890	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg2Weak output.
891	*
892	* @returns Pointer to the buffer.
893	* @param pVM The cross context VM structure.
894	*/
895	VMMR3DECL(const char *) VMMR3GetRZAssertMsg2(PVM pVM)
896	{
897	return pVM->vmm.s.szRing0AssertMsg2;
898	}
899
900
901	/**
902	* Execute state save operation.
903	*
904	* @returns VBox status code.
905	* @param pVM The cross context VM structure.
906	* @param pSSM SSM operation handle.
907	*/
908	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM)
909	{
910	LogFlow(("vmmR3Save:\n"));
911
912	/*
913	* Save the started/stopped state of all CPUs except 0 as it will always
914	* be running. This avoids breaking the saved state version. :-)
915	*/
916	for (VMCPUID i = 1; i < pVM->cCpus; i++)
917	SSMR3PutBool(pSSM, VMCPUSTATE_IS_STARTED(VMCPU_GET_STATE(pVM->apCpusR3[i])));
918
919	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
920	}
921
922
923	/**
924	* Execute state load operation.
925	*
926	* @returns VBox status code.
927	* @param pVM The cross context VM structure.
928	* @param pSSM SSM operation handle.
929	* @param uVersion Data layout version.
930	* @param uPass The data pass.
931	*/
932	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
933	{
934	LogFlow(("vmmR3Load:\n"));
935	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
936
937	/*
938	* Validate version.
939	*/
940	if ( uVersion != VMM_SAVED_STATE_VERSION
941	&& uVersion != VMM_SAVED_STATE_VERSION_3_0)
942	{
943	AssertMsgFailed(("vmmR3Load: Invalid version uVersion=%u!\n", uVersion));
944	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
945	}
946
947	if (uVersion <= VMM_SAVED_STATE_VERSION_3_0)
948	{
949	/* Ignore the stack bottom, stack pointer and stack bits. */
950	RTRCPTR RCPtrIgnored;
951	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
952	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
953	#ifdef RT_OS_DARWIN
954	if ( SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(3,0,0)
955	&& SSMR3HandleVersion(pSSM) < VBOX_FULL_VERSION_MAKE(3,1,0)
956	&& SSMR3HandleRevision(pSSM) >= 48858
957	&& ( !strcmp(SSMR3HandleHostOSAndArch(pSSM), "darwin.x86")
958	\|\| !strcmp(SSMR3HandleHostOSAndArch(pSSM), "") )
959	)
960	SSMR3Skip(pSSM, 16384);
961	else
962	SSMR3Skip(pSSM, 8192);
963	#else
964	SSMR3Skip(pSSM, 8192);
965	#endif
966	}
967
968	/*
969	* Restore the VMCPU states. VCPU 0 is always started.
970	*/
971	VMCPU_SET_STATE(pVM->apCpusR3[0], VMCPUSTATE_STARTED);
972	for (VMCPUID i = 1; i < pVM->cCpus; i++)
973	{
974	bool fStarted;
975	int rc = SSMR3GetBool(pSSM, &fStarted);
976	if (RT_FAILURE(rc))
977	return rc;
978	VMCPU_SET_STATE(pVM->apCpusR3[i], fStarted ? VMCPUSTATE_STARTED : VMCPUSTATE_STOPPED);
979	}
980
981	/* terminator */
982	uint32_t u32;
983	int rc = SSMR3GetU32(pSSM, &u32);
984	if (RT_FAILURE(rc))
985	return rc;
986	if (u32 != UINT32_MAX)
987	{
988	AssertMsgFailed(("u32=%#x\n", u32));
989	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
990	}
991	return VINF_SUCCESS;
992	}
993
994
995	/**
996	* Suspends the CPU yielder.
997	*
998	* @param pVM The cross context VM structure.
999	*/
1000	VMMR3_INT_DECL(void) VMMR3YieldSuspend(PVM pVM)
1001	{
1002	VMCPU_ASSERT_EMT(pVM->apCpusR3[0]);
1003	if (!pVM->vmm.s.cYieldResumeMillies)
1004	{
1005	uint64_t u64Now = TMTimerGet(pVM->vmm.s.pYieldTimer);
1006	uint64_t u64Expire = TMTimerGetExpire(pVM->vmm.s.pYieldTimer);
1007	if (u64Now >= u64Expire \|\| u64Expire == ~(uint64_t)0)
1008	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1009	else
1010	pVM->vmm.s.cYieldResumeMillies = TMTimerToMilli(pVM->vmm.s.pYieldTimer, u64Expire - u64Now);
1011	TMTimerStop(pVM->vmm.s.pYieldTimer);
1012	}
1013	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1014	}
1015
1016
1017	/**
1018	* Stops the CPU yielder.
1019	*
1020	* @param pVM The cross context VM structure.
1021	*/
1022	VMMR3_INT_DECL(void) VMMR3YieldStop(PVM pVM)
1023	{
1024	if (!pVM->vmm.s.cYieldResumeMillies)
1025	TMTimerStop(pVM->vmm.s.pYieldTimer);
1026	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1027	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1028	}
1029
1030
1031	/**
1032	* Resumes the CPU yielder when it has been a suspended or stopped.
1033	*
1034	* @param pVM The cross context VM structure.
1035	*/
1036	VMMR3_INT_DECL(void) VMMR3YieldResume(PVM pVM)
1037	{
1038	if (pVM->vmm.s.cYieldResumeMillies)
1039	{
1040	TMTimerSetMillies(pVM->vmm.s.pYieldTimer, pVM->vmm.s.cYieldResumeMillies);
1041	pVM->vmm.s.cYieldResumeMillies = 0;
1042	}
1043	}
1044
1045
1046	/**
1047	* Internal timer callback function.
1048	*
1049	* @param pVM The cross context VM structure.
1050	* @param pTimer The timer handle.
1051	* @param pvUser User argument specified upon timer creation.
1052	*/
1053	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, PTMTIMER pTimer, void *pvUser)
1054	{
1055	NOREF(pvUser);
1056
1057	/*
1058	* This really needs some careful tuning. While we shouldn't be too greedy since
1059	* that'll cause the rest of the system to stop up, we shouldn't be too nice either
1060	* because that'll cause us to stop up.
1061	*
1062	* The current logic is to use the default interval when there is no lag worth
1063	* mentioning, but when we start accumulating lag we don't bother yielding at all.
1064	*
1065	* (This depends on the TMCLOCK_VIRTUAL_SYNC to be scheduled before TMCLOCK_REAL
1066	* so the lag is up to date.)
1067	*/
1068	const uint64_t u64Lag = TMVirtualSyncGetLag(pVM);
1069	if ( u64Lag < 50000000 /* 50ms */
1070	\|\| ( u64Lag < 1000000000 /* 1s */
1071	&& RTTimeNanoTS() - pVM->vmm.s.u64LastYield < 500000000 /* 500 ms */)
1072	)
1073	{
1074	uint64_t u64Elapsed = RTTimeNanoTS();
1075	pVM->vmm.s.u64LastYield = u64Elapsed;
1076
1077	RTThreadYield();
1078
1079	#ifdef LOG_ENABLED
1080	u64Elapsed = RTTimeNanoTS() - u64Elapsed;
1081	Log(("vmmR3YieldEMT: %RI64 ns\n", u64Elapsed));
1082	#endif
1083	}
1084	TMTimerSetMillies(pTimer, pVM->vmm.s.cYieldEveryMillies);
1085	}
1086
1087
1088	/**
1089	* Executes guest code (Intel VT-x and AMD-V).
1090	*
1091	* @param pVM The cross context VM structure.
1092	* @param pVCpu The cross context virtual CPU structure.
1093	*/
1094	VMMR3_INT_DECL(int) VMMR3HmRunGC(PVM pVM, PVMCPU pVCpu)
1095	{
1096	Log2(("VMMR3HmRunGC: (cs:rip=%04x:%RX64)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1097
1098	for (;;)
1099	{
1100	int rc;
1101	do
1102	{
1103	#ifdef NO_SUPCALLR0VMM
1104	rc = VERR_GENERAL_FAILURE;
1105	#else
1106	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HM_RUN, pVCpu->idCpu);
1107	if (RT_LIKELY(rc == VINF_SUCCESS))
1108	rc = pVCpu->vmm.s.iLastGZRc;
1109	#endif
1110	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
1111
1112	#if 0 /** @todo triggers too often */
1113	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TO_R3));
1114	#endif
1115
1116	/*
1117	* Flush the logs
1118	*/
1119	#ifdef LOG_ENABLED
1120	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1121	#endif
1122	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1123	if (rc != VINF_VMM_CALL_HOST)
1124	{
1125	Log2(("VMMR3HmRunGC: returns %Rrc (cs:rip=%04x:%RX64)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1126	return rc;
1127	}
1128	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1129	if (RT_FAILURE(rc))
1130	return rc;
1131	/* Resume R0 */
1132	}
1133	}
1134
1135
1136	/**
1137	* Perform one of the fast I/O control VMMR0 operation.
1138	*
1139	* @returns VBox strict status code.
1140	* @param pVM The cross context VM structure.
1141	* @param pVCpu The cross context virtual CPU structure.
1142	* @param enmOperation The operation to perform.
1143	*/
1144	VMMR3_INT_DECL(VBOXSTRICTRC) VMMR3CallR0EmtFast(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation)
1145	{
1146	for (;;)
1147	{
1148	VBOXSTRICTRC rcStrict;
1149	do
1150	{
1151	#ifdef NO_SUPCALLR0VMM
1152	rcStrict = VERR_GENERAL_FAILURE;
1153	#else
1154	rcStrict = SUPR3CallVMMR0Fast(pVM->pVMR0, enmOperation, pVCpu->idCpu);
1155	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
1156	rcStrict = pVCpu->vmm.s.iLastGZRc;
1157	#endif
1158	} while (rcStrict == VINF_EM_RAW_INTERRUPT_HYPER);
1159
1160	/*
1161	* Flush the logs
1162	*/
1163	#ifdef LOG_ENABLED
1164	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
1165	#endif
1166	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
1167	if (rcStrict != VINF_VMM_CALL_HOST)
1168	return rcStrict;
1169	int rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1170	if (RT_FAILURE(rc))
1171	return rc;
1172	/* Resume R0 */
1173	}
1174	}
1175
1176
1177	/**
1178	* VCPU worker for VMMR3SendStartupIpi.
1179	*
1180	* @param pVM The cross context VM structure.
1181	* @param idCpu Virtual CPU to perform SIPI on.
1182	* @param uVector The SIPI vector.
1183	*/
1184	static DECLCALLBACK(int) vmmR3SendStarupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1185	{
1186	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1187	VMCPU_ASSERT_EMT(pVCpu);
1188
1189	/*
1190	* In the INIT state, the target CPU is only responsive to an SIPI.
1191	* This is also true for when when the CPU is in VMX non-root mode.
1192	*
1193	* See AMD spec. 16.5 "Interprocessor Interrupts (IPI)".
1194	* See Intel spec. 26.6.2 "Activity State".
1195	*/
1196	if (EMGetState(pVCpu) != EMSTATE_WAIT_SIPI)
1197	return VINF_SUCCESS;
1198
1199	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1200	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1201	if (CPUMIsGuestInVmxRootMode(pCtx))
1202	{
1203	/* If the CPU is in VMX non-root mode we must cause a VM-exit. */
1204	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1205	return VBOXSTRICTRC_TODO(IEMExecVmxVmexitStartupIpi(pVCpu, uVector));
1206
1207	/* If the CPU is in VMX root mode (and not in VMX non-root mode) SIPIs are blocked. */
1208	return VINF_SUCCESS;
1209	}
1210	#endif
1211
1212	pCtx->cs.Sel = uVector << 8;
1213	pCtx->cs.ValidSel = uVector << 8;
1214	pCtx->cs.fFlags = CPUMSELREG_FLAGS_VALID;
1215	pCtx->cs.u64Base = uVector << 12;
1216	pCtx->cs.u32Limit = UINT32_C(0x0000ffff);
1217	pCtx->rip = 0;
1218
1219	Log(("vmmR3SendSipi for VCPU %d with vector %x\n", idCpu, uVector));
1220
1221	# if 1 /* If we keep the EMSTATE_WAIT_SIPI method, then move this to EM.cpp. */
1222	EMSetState(pVCpu, EMSTATE_HALTED);
1223	return VINF_EM_RESCHEDULE;
1224	# else /* And if we go the VMCPU::enmState way it can stay here. */
1225	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STOPPED);
1226	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1227	return VINF_SUCCESS;
1228	# endif
1229	}
1230
1231
1232	/**
1233	* VCPU worker for VMMR3SendInitIpi.
1234	*
1235	* @returns VBox status code.
1236	* @param pVM The cross context VM structure.
1237	* @param idCpu Virtual CPU to perform SIPI on.
1238	*/
1239	static DECLCALLBACK(int) vmmR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1240	{
1241	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1242	VMCPU_ASSERT_EMT(pVCpu);
1243
1244	Log(("vmmR3SendInitIpi for VCPU %d\n", idCpu));
1245
1246	/** @todo r=ramshankar: We should probably block INIT signal when the CPU is in
1247	* wait-for-SIPI state. Verify. */
1248
1249	/* If the CPU is in VMX non-root mode, INIT signals cause VM-exits. */
1250	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
1251	PCCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1252	if (CPUMIsGuestInVmxNonRootMode(pCtx))
1253	return VBOXSTRICTRC_TODO(IEMExecVmxVmexit(pVCpu, VMX_EXIT_INIT_SIGNAL, 0 /* uExitQual */));
1254	#endif
1255
1256	/** @todo Figure out how to handle a SVM nested-guest intercepts here for INIT
1257	* IPI (e.g. SVM_EXIT_INIT). */
1258
1259	PGMR3ResetCpu(pVM, pVCpu);
1260	PDMR3ResetCpu(pVCpu); /* Only clears pending interrupts force flags */
1261	APICR3InitIpi(pVCpu);
1262	TRPMR3ResetCpu(pVCpu);
1263	CPUMR3ResetCpu(pVM, pVCpu);
1264	EMR3ResetCpu(pVCpu);
1265	HMR3ResetCpu(pVCpu);
1266	NEMR3ResetCpu(pVCpu, true /fInitIpi/);
1267
1268	/* This will trickle up on the target EMT. */
1269	return VINF_EM_WAIT_SIPI;
1270	}
1271
1272
1273	/**
1274	* Sends a Startup IPI to the virtual CPU by setting CS:EIP into
1275	* vector-dependent state and unhalting processor.
1276	*
1277	* @param pVM The cross context VM structure.
1278	* @param idCpu Virtual CPU to perform SIPI on.
1279	* @param uVector SIPI vector.
1280	*/
1281	VMMR3_INT_DECL(void) VMMR3SendStartupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1282	{
1283	AssertReturnVoid(idCpu < pVM->cCpus);
1284
1285	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendStarupIpi, 3, pVM, idCpu, uVector);
1286	AssertRC(rc);
1287	}
1288
1289
1290	/**
1291	* Sends init IPI to the virtual CPU.
1292	*
1293	* @param pVM The cross context VM structure.
1294	* @param idCpu Virtual CPU to perform int IPI on.
1295	*/
1296	VMMR3_INT_DECL(void) VMMR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1297	{
1298	AssertReturnVoid(idCpu < pVM->cCpus);
1299
1300	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendInitIpi, 2, pVM, idCpu);
1301	AssertRC(rc);
1302	}
1303
1304
1305	/**
1306	* Registers the guest memory range that can be used for patching.
1307	*
1308	* @returns VBox status code.
1309	* @param pVM The cross context VM structure.
1310	* @param pPatchMem Patch memory range.
1311	* @param cbPatchMem Size of the memory range.
1312	*/
1313	VMMR3DECL(int) VMMR3RegisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1314	{
1315	VM_ASSERT_EMT(pVM);
1316	if (HMIsEnabled(pVM))
1317	return HMR3EnablePatching(pVM, pPatchMem, cbPatchMem);
1318
1319	return VERR_NOT_SUPPORTED;
1320	}
1321
1322
1323	/**
1324	* Deregisters the guest memory range that can be used for patching.
1325	*
1326	* @returns VBox status code.
1327	* @param pVM The cross context VM structure.
1328	* @param pPatchMem Patch memory range.
1329	* @param cbPatchMem Size of the memory range.
1330	*/
1331	VMMR3DECL(int) VMMR3DeregisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1332	{
1333	if (HMIsEnabled(pVM))
1334	return HMR3DisablePatching(pVM, pPatchMem, cbPatchMem);
1335
1336	return VINF_SUCCESS;
1337	}
1338
1339
1340	/**
1341	* Common recursion handler for the other EMTs.
1342	*
1343	* @returns Strict VBox status code.
1344	* @param pVM The cross context VM structure.
1345	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1346	* @param rcStrict Current status code to be combined with the one
1347	* from this recursion and returned.
1348	*/
1349	static VBOXSTRICTRC vmmR3EmtRendezvousCommonRecursion(PVM pVM, PVMCPU pVCpu, VBOXSTRICTRC rcStrict)
1350	{
1351	int rc2;
1352
1353	/*
1354	* We wait here while the initiator of this recursion reconfigures
1355	* everything. The last EMT to get in signals the initiator.
1356	*/
1357	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) == pVM->cCpus)
1358	{
1359	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1360	AssertLogRelRC(rc2);
1361	}
1362
1363	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPush, RT_INDEFINITE_WAIT);
1364	AssertLogRelRC(rc2);
1365
1366	/*
1367	* Do the normal rendezvous processing.
1368	*/
1369	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1370	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1371
1372	/*
1373	* Wait for the initiator to restore everything.
1374	*/
1375	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPop, RT_INDEFINITE_WAIT);
1376	AssertLogRelRC(rc2);
1377
1378	/*
1379	* Last thread out of here signals the initiator.
1380	*/
1381	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) == pVM->cCpus)
1382	{
1383	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1384	AssertLogRelRC(rc2);
1385	}
1386
1387	/*
1388	* Merge status codes and return.
1389	*/
1390	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
1391	if ( rcStrict2 != VINF_SUCCESS
1392	&& ( rcStrict == VINF_SUCCESS
1393	\|\| rcStrict > rcStrict2))
1394	rcStrict = rcStrict2;
1395	return rcStrict;
1396	}
1397
1398
1399	/**
1400	* Count returns and have the last non-caller EMT wake up the caller.
1401	*
1402	* @returns VBox strict informational status code for EM scheduling. No failures
1403	* will be returned here, those are for the caller only.
1404	*
1405	* @param pVM The cross context VM structure.
1406	* @param rcStrict The current accumulated recursive status code,
1407	* to be merged with i32RendezvousStatus and
1408	* returned.
1409	*/
1410	DECL_FORCE_INLINE(VBOXSTRICTRC) vmmR3EmtRendezvousNonCallerReturn(PVM pVM, VBOXSTRICTRC rcStrict)
1411	{
1412	VBOXSTRICTRC rcStrict2 = ASMAtomicReadS32(&pVM->vmm.s.i32RendezvousStatus);
1413
1414	uint32_t cReturned = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsReturned);
1415	if (cReturned == pVM->cCpus - 1U)
1416	{
1417	int rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1418	AssertLogRelRC(rc);
1419	}
1420
1421	/*
1422	* Merge the status codes, ignoring error statuses in this code path.
1423	*/
1424	AssertLogRelMsgReturn( rcStrict2 <= VINF_SUCCESS
1425	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1426	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)),
1427	VERR_IPE_UNEXPECTED_INFO_STATUS);
1428
1429	if (RT_SUCCESS(rcStrict2))
1430	{
1431	if ( rcStrict2 != VINF_SUCCESS
1432	&& ( rcStrict == VINF_SUCCESS
1433	\|\| rcStrict > rcStrict2))
1434	rcStrict = rcStrict2;
1435	}
1436	return rcStrict;
1437	}
1438
1439
1440	/**
1441	* Common worker for VMMR3EmtRendezvous and VMMR3EmtRendezvousFF.
1442	*
1443	* @returns VBox strict informational status code for EM scheduling. No failures
1444	* will be returned here, those are for the caller only. When
1445	* fIsCaller is set, VINF_SUCCESS is always returned.
1446	*
1447	* @param pVM The cross context VM structure.
1448	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1449	* @param fIsCaller Whether we're the VMMR3EmtRendezvous caller or
1450	* not.
1451	* @param fFlags The flags.
1452	* @param pfnRendezvous The callback.
1453	* @param pvUser The user argument for the callback.
1454	*/
1455	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
1456	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1457	{
1458	int rc;
1459	VBOXSTRICTRC rcStrictRecursion = VINF_SUCCESS;
1460
1461	/*
1462	* Enter, the last EMT triggers the next callback phase.
1463	*/
1464	uint32_t cEntered = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsEntered);
1465	if (cEntered != pVM->cCpus)
1466	{
1467	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1468	{
1469	/* Wait for our turn. */
1470	for (;;)
1471	{
1472	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, RT_INDEFINITE_WAIT);
1473	AssertLogRelRC(rc);
1474	if (!pVM->vmm.s.fRendezvousRecursion)
1475	break;
1476	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1477	}
1478	}
1479	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1480	{
1481	/* Wait for the last EMT to arrive and wake everyone up. */
1482	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce, RT_INDEFINITE_WAIT);
1483	AssertLogRelRC(rc);
1484	Assert(!pVM->vmm.s.fRendezvousRecursion);
1485	}
1486	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1487	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1488	{
1489	/* Wait for our turn. */
1490	for (;;)
1491	{
1492	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1493	AssertLogRelRC(rc);
1494	if (!pVM->vmm.s.fRendezvousRecursion)
1495	break;
1496	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1497	}
1498	}
1499	else
1500	{
1501	Assert((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE);
1502
1503	/*
1504	* The execute once is handled specially to optimize the code flow.
1505	*
1506	* The last EMT to arrive will perform the callback and the other
1507	* EMTs will wait on the Done/DoneCaller semaphores (instead of
1508	* the EnterOneByOne/AllAtOnce) in the meanwhile. When the callback
1509	* returns, that EMT will initiate the normal return sequence.
1510	*/
1511	if (!fIsCaller)
1512	{
1513	for (;;)
1514	{
1515	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1516	AssertLogRelRC(rc);
1517	if (!pVM->vmm.s.fRendezvousRecursion)
1518	break;
1519	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1520	}
1521
1522	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1523	}
1524	return VINF_SUCCESS;
1525	}
1526	}
1527	else
1528	{
1529	/*
1530	* All EMTs are waiting, clear the FF and take action according to the
1531	* execution method.
1532	*/
1533	VM_FF_CLEAR(pVM, VM_FF_EMT_RENDEZVOUS);
1534
1535	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1536	{
1537	/* Wake up everyone. */
1538	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
1539	AssertLogRelRC(rc);
1540	}
1541	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1542	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1543	{
1544	/* Figure out who to wake up and wake it up. If it's ourself, then
1545	it's easy otherwise wait for our turn. */
1546	VMCPUID iFirst = (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1547	? 0
1548	: pVM->cCpus - 1U;
1549	if (pVCpu->idCpu != iFirst)
1550	{
1551	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iFirst]);
1552	AssertLogRelRC(rc);
1553	for (;;)
1554	{
1555	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1556	AssertLogRelRC(rc);
1557	if (!pVM->vmm.s.fRendezvousRecursion)
1558	break;
1559	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1560	}
1561	}
1562	}
1563	/* else: execute the handler on the current EMT and wake up one or more threads afterwards. */
1564	}
1565
1566
1567	/*
1568	* Do the callback and update the status if necessary.
1569	*/
1570	if ( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1571	\|\| RT_SUCCESS(ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus)) )
1572	{
1573	VBOXSTRICTRC rcStrict2 = pfnRendezvous(pVM, pVCpu, pvUser);
1574	if (rcStrict2 != VINF_SUCCESS)
1575	{
1576	AssertLogRelMsg( rcStrict2 <= VINF_SUCCESS
1577	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1578	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)));
1579	int32_t i32RendezvousStatus;
1580	do
1581	{
1582	i32RendezvousStatus = ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus);
1583	if ( rcStrict2 == i32RendezvousStatus
1584	\|\| RT_FAILURE(i32RendezvousStatus)
1585	\|\| ( i32RendezvousStatus != VINF_SUCCESS
1586	&& rcStrict2 > i32RendezvousStatus))
1587	break;
1588	} while (!ASMAtomicCmpXchgS32(&pVM->vmm.s.i32RendezvousStatus, VBOXSTRICTRC_VAL(rcStrict2), i32RendezvousStatus));
1589	}
1590	}
1591
1592	/*
1593	* Increment the done counter and take action depending on whether we're
1594	* the last to finish callback execution.
1595	*/
1596	uint32_t cDone = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsDone);
1597	if ( cDone != pVM->cCpus
1598	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE)
1599	{
1600	/* Signal the next EMT? */
1601	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1602	{
1603	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1604	AssertLogRelRC(rc);
1605	}
1606	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1607	{
1608	Assert(cDone == pVCpu->idCpu + 1U);
1609	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu + 1U]);
1610	AssertLogRelRC(rc);
1611	}
1612	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1613	{
1614	Assert(pVM->cCpus - cDone == pVCpu->idCpu);
1615	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVM->cCpus - cDone - 1U]);
1616	AssertLogRelRC(rc);
1617	}
1618
1619	/* Wait for the rest to finish (the caller waits on hEvtRendezvousDoneCaller). */
1620	if (!fIsCaller)
1621	{
1622	for (;;)
1623	{
1624	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1625	AssertLogRelRC(rc);
1626	if (!pVM->vmm.s.fRendezvousRecursion)
1627	break;
1628	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1629	}
1630	}
1631	}
1632	else
1633	{
1634	/* Callback execution is all done, tell the rest to return. */
1635	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1636	AssertLogRelRC(rc);
1637	}
1638
1639	if (!fIsCaller)
1640	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1641	return rcStrictRecursion;
1642	}
1643
1644
1645	/**
1646	* Called in response to VM_FF_EMT_RENDEZVOUS.
1647	*
1648	* @returns VBox strict status code - EM scheduling. No errors will be returned
1649	* here, nor will any non-EM scheduling status codes be returned.
1650	*
1651	* @param pVM The cross context VM structure.
1652	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1653	*
1654	* @thread EMT
1655	*/
1656	VMMR3_INT_DECL(int) VMMR3EmtRendezvousFF(PVM pVM, PVMCPU pVCpu)
1657	{
1658	Assert(!pVCpu->vmm.s.fInRendezvous);
1659	Log(("VMMR3EmtRendezvousFF: EMT%#u\n", pVCpu->idCpu));
1660	pVCpu->vmm.s.fInRendezvous = true;
1661	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1662	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1663	pVCpu->vmm.s.fInRendezvous = false;
1664	Log(("VMMR3EmtRendezvousFF: EMT%#u returns %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
1665	return VBOXSTRICTRC_TODO(rcStrict);
1666	}
1667
1668
1669	/**
1670	* Helper for resetting an single wakeup event sempahore.
1671	*
1672	* @returns VERR_TIMEOUT on success, RTSemEventWait status otherwise.
1673	* @param hEvt The event semaphore to reset.
1674	*/
1675	static int vmmR3HlpResetEvent(RTSEMEVENT hEvt)
1676	{
1677	for (uint32_t cLoops = 0; ; cLoops++)
1678	{
1679	int rc = RTSemEventWait(hEvt, 0 /cMsTimeout/);
1680	if (rc != VINF_SUCCESS \|\| cLoops > _4K)
1681	return rc;
1682	}
1683	}
1684
1685
1686	/**
1687	* Worker for VMMR3EmtRendezvous that handles recursion.
1688	*
1689	* @returns VBox strict status code. This will be the first error,
1690	* VINF_SUCCESS, or an EM scheduling status code.
1691	*
1692	* @param pVM The cross context VM structure.
1693	* @param pVCpu The cross context virtual CPU structure of the
1694	* calling EMT.
1695	* @param fFlags Flags indicating execution methods. See
1696	* grp_VMMR3EmtRendezvous_fFlags.
1697	* @param pfnRendezvous The callback.
1698	* @param pvUser User argument for the callback.
1699	*
1700	* @thread EMT(pVCpu)
1701	*/
1702	static VBOXSTRICTRC vmmR3EmtRendezvousRecursive(PVM pVM, PVMCPU pVCpu, uint32_t fFlags,
1703	PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1704	{
1705	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d\n", fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions));
1706	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1707	Assert(pVCpu->vmm.s.fInRendezvous);
1708
1709	/*
1710	* Save the current state.
1711	*/
1712	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1713	uint32_t const cParentDone = pVM->vmm.s.cRendezvousEmtsDone;
1714	int32_t const iParentStatus = pVM->vmm.s.i32RendezvousStatus;
1715	PFNVMMEMTRENDEZVOUS const pfnParent = pVM->vmm.s.pfnRendezvous;
1716	void * const pvParentUser = pVM->vmm.s.pvRendezvousUser;
1717
1718	/*
1719	* Check preconditions and save the current state.
1720	*/
1721	AssertReturn( (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1722	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1723	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1724	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1725	VERR_INTERNAL_ERROR);
1726	AssertReturn(pVM->vmm.s.cRendezvousEmtsEntered == pVM->cCpus, VERR_INTERNAL_ERROR_2);
1727	AssertReturn(pVM->vmm.s.cRendezvousEmtsReturned == 0, VERR_INTERNAL_ERROR_3);
1728
1729	/*
1730	* Reset the recursion prep and pop semaphores.
1731	*/
1732	int rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1733	AssertLogRelRCReturn(rc, rc);
1734	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1735	AssertLogRelRCReturn(rc, rc);
1736	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1737	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1738	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1739	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
1740
1741	/*
1742	* Usher the other thread into the recursion routine.
1743	*/
1744	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush, 0);
1745	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, true);
1746
1747	uint32_t cLeft = pVM->cCpus - (cParentDone + 1U);
1748	if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1749	while (cLeft-- > 0)
1750	{
1751	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1752	AssertLogRelRC(rc);
1753	}
1754	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1755	{
1756	Assert(cLeft == pVM->cCpus - (pVCpu->idCpu + 1U));
1757	for (VMCPUID iCpu = pVCpu->idCpu + 1U; iCpu < pVM->cCpus; iCpu++)
1758	{
1759	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu]);
1760	AssertLogRelRC(rc);
1761	}
1762	}
1763	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1764	{
1765	Assert(cLeft == pVCpu->idCpu);
1766	for (VMCPUID iCpu = pVCpu->idCpu; iCpu > 0; iCpu--)
1767	{
1768	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu - 1U]);
1769	AssertLogRelRC(rc);
1770	}
1771	}
1772	else
1773	AssertLogRelReturn((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
1774	VERR_INTERNAL_ERROR_4);
1775
1776	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1777	AssertLogRelRC(rc);
1778	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1779	AssertLogRelRC(rc);
1780
1781
1782	/*
1783	* Wait for the EMTs to wake up and get out of the parent rendezvous code.
1784	*/
1785	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) != pVM->cCpus)
1786	{
1787	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPushCaller, RT_INDEFINITE_WAIT);
1788	AssertLogRelRC(rc);
1789	}
1790
1791	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, false);
1792
1793	/*
1794	* Clear the slate and setup the new rendezvous.
1795	*/
1796	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1797	{
1798	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1799	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1800	}
1801	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1802	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1803	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1804	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1805
1806	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
1807	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
1808	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1809	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
1810	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
1811	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
1812	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
1813	ASMAtomicIncU32(&pVM->vmm.s.cRendezvousRecursions);
1814
1815	/*
1816	* We're ready to go now, do normal rendezvous processing.
1817	*/
1818	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
1819	AssertLogRelRC(rc);
1820
1821	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /fIsCaller/, fFlags, pfnRendezvous, pvUser);
1822
1823	/*
1824	* The caller waits for the other EMTs to be done, return and waiting on the
1825	* pop semaphore.
1826	*/
1827	for (;;)
1828	{
1829	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
1830	AssertLogRelRC(rc);
1831	if (!pVM->vmm.s.fRendezvousRecursion)
1832	break;
1833	rcStrict = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict);
1834	}
1835
1836	/*
1837	* Get the return code and merge it with the above recursion status.
1838	*/
1839	VBOXSTRICTRC rcStrict2 = pVM->vmm.s.i32RendezvousStatus;
1840	if ( rcStrict2 != VINF_SUCCESS
1841	&& ( rcStrict == VINF_SUCCESS
1842	\|\| rcStrict > rcStrict2))
1843	rcStrict = rcStrict2;
1844
1845	/*
1846	* Restore the parent rendezvous state.
1847	*/
1848	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1849	{
1850	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
1851	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1852	}
1853	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1854	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
1855	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
1856	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1857
1858	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, pVM->cCpus);
1859	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
1860	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, cParentDone);
1861	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, iParentStatus);
1862	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fParentFlags);
1863	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvParentUser);
1864	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnParent);
1865
1866	/*
1867	* Usher the other EMTs back to their parent recursion routine, waiting
1868	* for them to all get there before we return (makes sure they've been
1869	* scheduled and are past the pop event sem, see below).
1870	*/
1871	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop, 0);
1872	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
1873	AssertLogRelRC(rc);
1874
1875	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) != pVM->cCpus)
1876	{
1877	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPopCaller, RT_INDEFINITE_WAIT);
1878	AssertLogRelRC(rc);
1879	}
1880
1881	/*
1882	* We must reset the pop semaphore on the way out (doing the pop caller too,
1883	* just in case). The parent may be another recursion.
1884	*/
1885	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop); AssertLogRelRC(rc);
1886	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
1887
1888	ASMAtomicDecU32(&pVM->vmm.s.cRendezvousRecursions);
1889
1890	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d returns %Rrc\n",
1891	fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions, VBOXSTRICTRC_VAL(rcStrict)));
1892	return rcStrict;
1893	}
1894
1895
1896	/**
1897	* EMT rendezvous.
1898	*
1899	* Gathers all the EMTs and execute some code on each of them, either in a one
1900	* by one fashion or all at once.
1901	*
1902	* @returns VBox strict status code. This will be the first error,
1903	* VINF_SUCCESS, or an EM scheduling status code.
1904	*
1905	* @retval VERR_DEADLOCK if recursion is attempted using a rendezvous type that
1906	* doesn't support it or if the recursion is too deep.
1907	*
1908	* @param pVM The cross context VM structure.
1909	* @param fFlags Flags indicating execution methods. See
1910	* grp_VMMR3EmtRendezvous_fFlags. The one-by-one,
1911	* descending and ascending rendezvous types support
1912	* recursion from inside @a pfnRendezvous.
1913	* @param pfnRendezvous The callback.
1914	* @param pvUser User argument for the callback.
1915	*
1916	* @thread Any.
1917	*/
1918	VMMR3DECL(int) VMMR3EmtRendezvous(PVM pVM, uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1919	{
1920	/*
1921	* Validate input.
1922	*/
1923	AssertReturn(pVM, VERR_INVALID_VM_HANDLE);
1924	AssertMsg( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_INVALID
1925	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) <= VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1926	&& !(fFlags & ~VMMEMTRENDEZVOUS_FLAGS_VALID_MASK), ("%#x\n", fFlags));
1927	AssertMsg( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1928	\|\| ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE
1929	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE),
1930	("type %u\n", fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK));
1931
1932	VBOXSTRICTRC rcStrict;
1933	PVMCPU pVCpu = VMMGetCpu(pVM);
1934	if (!pVCpu)
1935	{
1936	/*
1937	* Forward the request to an EMT thread.
1938	*/
1939	Log(("VMMR3EmtRendezvous: %#x non-EMT\n", fFlags));
1940	if (!(fFlags & VMMEMTRENDEZVOUS_FLAGS_PRIORITY))
1941	rcStrict = VMR3ReqCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1942	else
1943	rcStrict = VMR3ReqPriorityCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
1944	Log(("VMMR3EmtRendezvous: %#x non-EMT returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1945	}
1946	else if ( pVM->cCpus == 1
1947	\|\| ( pVM->enmVMState == VMSTATE_DESTROYING
1948	&& VMR3GetActiveEmts(pVM->pUVM) < pVM->cCpus ) )
1949	{
1950	/*
1951	* Shortcut for the single EMT case.
1952	*
1953	* We also ends up here if EMT(0) (or others) tries to issue a rendezvous
1954	* during vmR3Destroy after other emulation threads have started terminating.
1955	*/
1956	if (!pVCpu->vmm.s.fInRendezvous)
1957	{
1958	Log(("VMMR3EmtRendezvous: %#x EMT (uni)\n", fFlags));
1959	pVCpu->vmm.s.fInRendezvous = true;
1960	pVM->vmm.s.fRendezvousFlags = fFlags;
1961	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1962	pVCpu->vmm.s.fInRendezvous = false;
1963	}
1964	else
1965	{
1966	/* Recursion. Do the same checks as in the SMP case. */
1967	Log(("VMMR3EmtRendezvous: %#x EMT (uni), recursion depth=%d\n", fFlags, pVM->vmm.s.cRendezvousRecursions));
1968	uint32_t fType = pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK;
1969	AssertLogRelReturn( !pVCpu->vmm.s.fInRendezvous
1970	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1971	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
1972	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
1973	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
1974	, VERR_DEADLOCK);
1975
1976	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
1977	pVM->vmm.s.cRendezvousRecursions++;
1978	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
1979	pVM->vmm.s.fRendezvousFlags = fFlags;
1980
1981	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
1982
1983	pVM->vmm.s.fRendezvousFlags = fParentFlags;
1984	pVM->vmm.s.cRendezvousRecursions--;
1985	}
1986	Log(("VMMR3EmtRendezvous: %#x EMT (uni) returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
1987	}
1988	else
1989	{
1990	/*
1991	* Spin lock. If busy, check for recursion, if not recursing wait for
1992	* the other EMT to finish while keeping a lookout for the RENDEZVOUS FF.
1993	*/
1994	int rc;
1995	rcStrict = VINF_SUCCESS;
1996	if (RT_UNLIKELY(!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0)))
1997	{
1998	/* Allow recursion in some cases. */
1999	if ( pVCpu->vmm.s.fInRendezvous
2000	&& ( (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2001	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2002	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2003	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
2004	))
2005	return VBOXSTRICTRC_TODO(vmmR3EmtRendezvousRecursive(pVM, pVCpu, fFlags, pfnRendezvous, pvUser));
2006
2007	AssertLogRelMsgReturn(!pVCpu->vmm.s.fInRendezvous, ("fRendezvousFlags=%#x\n", pVM->vmm.s.fRendezvousFlags),
2008	VERR_DEADLOCK);
2009
2010	Log(("VMMR3EmtRendezvous: %#x EMT#%u, waiting for lock...\n", fFlags, pVCpu->idCpu));
2011	while (!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0))
2012	{
2013	if (VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS))
2014	{
2015	rc = VMMR3EmtRendezvousFF(pVM, pVCpu);
2016	if ( rc != VINF_SUCCESS
2017	&& ( rcStrict == VINF_SUCCESS
2018	\|\| rcStrict > rc))
2019	rcStrict = rc;
2020	/** @todo Perhaps deal with termination here? */
2021	}
2022	ASMNopPause();
2023	}
2024	}
2025
2026	Log(("VMMR3EmtRendezvous: %#x EMT#%u\n", fFlags, pVCpu->idCpu));
2027	Assert(!VM_FF_IS_SET(pVM, VM_FF_EMT_RENDEZVOUS));
2028	Assert(!pVCpu->vmm.s.fInRendezvous);
2029	pVCpu->vmm.s.fInRendezvous = true;
2030
2031	/*
2032	* Clear the slate and setup the rendezvous. This is a semaphore ping-pong orgy. :-)
2033	*/
2034	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2035	{
2036	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i], 0);
2037	AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2038	}
2039	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2040	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2041	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2042	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2043	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
2044	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
2045	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2046	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
2047	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
2048	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
2049	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
2050
2051	/*
2052	* Set the FF and poke the other EMTs.
2053	*/
2054	VM_FF_SET(pVM, VM_FF_EMT_RENDEZVOUS);
2055	VMR3NotifyGlobalFFU(pVM->pUVM, VMNOTIFYFF_FLAGS_POKE);
2056
2057	/*
2058	* Do the same ourselves.
2059	*/
2060	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /* fIsCaller */, fFlags, pfnRendezvous, pvUser);
2061
2062	/*
2063	* The caller waits for the other EMTs to be done and return before doing
2064	* the cleanup. This makes away with wakeup / reset races we would otherwise
2065	* risk in the multiple release event semaphore code (hEvtRendezvousDoneCaller).
2066	*/
2067	for (;;)
2068	{
2069	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
2070	AssertLogRelRC(rc);
2071	if (!pVM->vmm.s.fRendezvousRecursion)
2072	break;
2073	rcStrict2 = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict2);
2074	}
2075
2076	/*
2077	* Get the return code and clean up a little bit.
2078	*/
2079	VBOXSTRICTRC rcStrict3 = pVM->vmm.s.i32RendezvousStatus;
2080	ASMAtomicWriteNullPtr((void * volatile *)&pVM->vmm.s.pfnRendezvous);
2081
2082	ASMAtomicWriteU32(&pVM->vmm.s.u32RendezvousLock, 0);
2083	pVCpu->vmm.s.fInRendezvous = false;
2084
2085	/*
2086	* Merge rcStrict, rcStrict2 and rcStrict3.
2087	*/
2088	AssertRC(VBOXSTRICTRC_VAL(rcStrict));
2089	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
2090	if ( rcStrict2 != VINF_SUCCESS
2091	&& ( rcStrict == VINF_SUCCESS
2092	\|\| rcStrict > rcStrict2))
2093	rcStrict = rcStrict2;
2094	if ( rcStrict3 != VINF_SUCCESS
2095	&& ( rcStrict == VINF_SUCCESS
2096	\|\| rcStrict > rcStrict3))
2097	rcStrict = rcStrict3;
2098	Log(("VMMR3EmtRendezvous: %#x EMT#%u returns %Rrc\n", fFlags, pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
2099	}
2100
2101	AssertLogRelMsgReturn( rcStrict <= VINF_SUCCESS
2102	\|\| (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST),
2103	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
2104	VERR_IPE_UNEXPECTED_INFO_STATUS);
2105	return VBOXSTRICTRC_VAL(rcStrict);
2106	}
2107
2108
2109	/**
2110	* Interface for vmR3SetHaltMethodU.
2111	*
2112	* @param pVCpu The cross context virtual CPU structure of the
2113	* calling EMT.
2114	* @param fMayHaltInRing0 The new state.
2115	* @param cNsSpinBlockThreshold The spin-vs-blocking threashold.
2116	* @thread EMT(pVCpu)
2117	*
2118	* @todo Move the EMT handling to VMM (or EM). I soooooo regret that VM
2119	* component.
2120	*/
2121	VMMR3_INT_DECL(void) VMMR3SetMayHaltInRing0(PVMCPU pVCpu, bool fMayHaltInRing0, uint32_t cNsSpinBlockThreshold)
2122	{
2123	pVCpu->vmm.s.fMayHaltInRing0 = fMayHaltInRing0;
2124	pVCpu->vmm.s.cNsSpinBlockThreshold = cNsSpinBlockThreshold;
2125	}
2126
2127
2128	/**
2129	* Read from the ring 0 jump buffer stack.
2130	*
2131	* @returns VBox status code.
2132	*
2133	* @param pVM The cross context VM structure.
2134	* @param idCpu The ID of the source CPU context (for the address).
2135	* @param R0Addr Where to start reading.
2136	* @param pvBuf Where to store the data we've read.
2137	* @param cbRead The number of bytes to read.
2138	*/
2139	VMMR3_INT_DECL(int) VMMR3ReadR0Stack(PVM pVM, VMCPUID idCpu, RTHCUINTPTR R0Addr, void *pvBuf, size_t cbRead)
2140	{
2141	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
2142	AssertReturn(pVCpu, VERR_INVALID_PARAMETER);
2143	AssertReturn(cbRead < ~(size_t)0 / 2, VERR_INVALID_PARAMETER);
2144
2145	int rc;
2146	#ifdef VMM_R0_SWITCH_STACK
2147	RTHCUINTPTR off = R0Addr - MMHyperCCToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
2148	#else
2149	RTHCUINTPTR off = pVCpu->vmm.s.CallRing3JmpBufR0.cbSavedStack - (pVCpu->vmm.s.CallRing3JmpBufR0.SpCheck - R0Addr);
2150	#endif
2151	if ( off < VMM_STACK_SIZE
2152	&& off + cbRead <= VMM_STACK_SIZE)
2153	{
2154	memcpy(pvBuf, &pVCpu->vmm.s.pbEMTStackR3[off], cbRead);
2155	rc = VINF_SUCCESS;
2156	}
2157	else
2158	rc = VERR_INVALID_POINTER;
2159
2160	/* Supply the setjmp return RIP/EIP. */
2161	if ( pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation + sizeof(RTR0UINTPTR) > R0Addr
2162	&& pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation < R0Addr + cbRead)
2163	{
2164	uint8_t const pbSrc = (uint8_t const )&pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue;
2165	size_t cbSrc = sizeof(pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcValue);
2166	size_t offDst = 0;
2167	if (R0Addr < pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2168	offDst = pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation - R0Addr;
2169	else if (R0Addr > pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation)
2170	{
2171	size_t offSrc = R0Addr - pVCpu->vmm.s.CallRing3JmpBufR0.UnwindRetPcLocation;
2172	Assert(offSrc < cbSrc);
2173	pbSrc -= offSrc;
2174	cbSrc -= offSrc;
2175	}
2176	if (cbSrc > cbRead - offDst)
2177	cbSrc = cbRead - offDst;
2178	memcpy((uint8_t *)pvBuf + offDst, pbSrc, cbSrc);
2179
2180	if (cbSrc == cbRead)
2181	rc = VINF_SUCCESS;
2182	}
2183
2184	return rc;
2185	}
2186
2187
2188	/**
2189	* Used by the DBGF stack unwinder to initialize the register state.
2190	*
2191	* @param pUVM The user mode VM handle.
2192	* @param idCpu The ID of the CPU being unwound.
2193	* @param pState The unwind state to initialize.
2194	*/
2195	VMMR3_INT_DECL(void) VMMR3InitR0StackUnwindState(PUVM pUVM, VMCPUID idCpu, struct RTDBGUNWINDSTATE *pState)
2196	{
2197	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, idCpu);
2198	AssertReturnVoid(pVCpu);
2199
2200	/*
2201	* Locate the resume point on the stack.
2202	*/
2203	#ifdef VMM_R0_SWITCH_STACK
2204	uintptr_t off = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume - MMHyperCCToR0(pVCpu->pVMR3, pVCpu->vmm.s.pbEMTStackR3);
2205	AssertReturnVoid(off < VMM_STACK_SIZE);
2206	#else
2207	uintptr_t off = 0;
2208	#endif
2209
2210	#ifdef RT_ARCH_AMD64
2211	/*
2212	* This code must match the .resume stuff in VMMR0JmpA-amd64.asm exactly.
2213	*/
2214	# ifdef VBOX_STRICT
2215	Assert((uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2216	off += 8; /* RESUME_MAGIC */
2217	# endif
2218	# ifdef RT_OS_WINDOWS
2219	off += 0xa0; /* XMM6 thru XMM15 */
2220	# endif
2221	pState->u.x86.uRFlags = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2222	off += 8;
2223	pState->u.x86.auRegs[X86_GREG_xBX] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2224	off += 8;
2225	# ifdef RT_OS_WINDOWS
2226	pState->u.x86.auRegs[X86_GREG_xSI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2227	off += 8;
2228	pState->u.x86.auRegs[X86_GREG_xDI] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2229	off += 8;
2230	# endif
2231	pState->u.x86.auRegs[X86_GREG_x12] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2232	off += 8;
2233	pState->u.x86.auRegs[X86_GREG_x13] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2234	off += 8;
2235	pState->u.x86.auRegs[X86_GREG_x14] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2236	off += 8;
2237	pState->u.x86.auRegs[X86_GREG_x15] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2238	off += 8;
2239	pState->u.x86.auRegs[X86_GREG_xBP] = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2240	off += 8;
2241	pState->uPc = (uint64_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2242	off += 8;
2243
2244	#elif defined(RT_ARCH_X86)
2245	/*
2246	* This code must match the .resume stuff in VMMR0JmpA-x86.asm exactly.
2247	*/
2248	# ifdef VBOX_STRICT
2249	Assert((uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off] == UINT32_C(0x7eadf00d));
2250	off += 4; /* RESUME_MAGIC */
2251	# endif
2252	pState->u.x86.uRFlags = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2253	off += 4;
2254	pState->u.x86.auRegs[X86_GREG_xBX] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2255	off += 4;
2256	pState->u.x86.auRegs[X86_GREG_xSI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2257	off += 4;
2258	pState->u.x86.auRegs[X86_GREG_xDI] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2259	off += 4;
2260	pState->u.x86.auRegs[X86_GREG_xBP] = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2261	off += 4;
2262	pState->uPc = (uint32_t const )&pVCpu->vmm.s.pbEMTStackR3[off];
2263	off += 4;
2264	#else
2265	# error "Port me"
2266	#endif
2267
2268	/*
2269	* This is all we really need here, though the above helps if the assembly
2270	* doesn't contain unwind info (currently only on win/64, so that is useful).
2271	*/
2272	pState->u.x86.auRegs[X86_GREG_xBP] = pVCpu->vmm.s.CallRing3JmpBufR0.SavedEbp;
2273	pState->u.x86.auRegs[X86_GREG_xSP] = pVCpu->vmm.s.CallRing3JmpBufR0.SpResume;
2274	}
2275
2276
2277	/**
2278	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2279	*
2280	* @returns VBox status code.
2281	* @param pVM The cross context VM structure.
2282	* @param uOperation Operation to execute.
2283	* @param u64Arg Constant argument.
2284	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2285	* details.
2286	*/
2287	VMMR3DECL(int) VMMR3CallR0(PVM pVM, uint32_t uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2288	{
2289	PVMCPU pVCpu = VMMGetCpu(pVM);
2290	AssertReturn(pVCpu, VERR_VM_THREAD_NOT_EMT);
2291	return VMMR3CallR0Emt(pVM, pVCpu, (VMMR0OPERATION)uOperation, u64Arg, pReqHdr);
2292	}
2293
2294
2295	/**
2296	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2297	*
2298	* @returns VBox status code.
2299	* @param pVM The cross context VM structure.
2300	* @param pVCpu The cross context VM structure.
2301	* @param enmOperation Operation to execute.
2302	* @param u64Arg Constant argument.
2303	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2304	* details.
2305	*/
2306	VMMR3_INT_DECL(int) VMMR3CallR0Emt(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2307	{
2308	int rc;
2309	for (;;)
2310	{
2311	#ifdef NO_SUPCALLR0VMM
2312	rc = VERR_GENERAL_FAILURE;
2313	#else
2314	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, pVCpu->idCpu, enmOperation, u64Arg, pReqHdr);
2315	#endif
2316	/*
2317	* Flush the logs.
2318	*/
2319	#ifdef LOG_ENABLED
2320	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0LoggerR3, NULL);
2321	#endif
2322	VMM_FLUSH_R0_LOG(pVCpu->vmm.s.pR0RelLoggerR3, RTLogRelGetDefaultInstance());
2323	if (rc != VINF_VMM_CALL_HOST)
2324	break;
2325	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2326	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
2327	break;
2328	/* Resume R0 */
2329	}
2330
2331	AssertLogRelMsgReturn(rc == VINF_SUCCESS \|\| RT_FAILURE(rc),
2332	("enmOperation=%u rc=%Rrc\n", enmOperation, rc),
2333	VERR_IPE_UNEXPECTED_INFO_STATUS);
2334	return rc;
2335	}
2336
2337
2338	/**
2339	* Service a call to the ring-3 host code.
2340	*
2341	* @returns VBox status code.
2342	* @param pVM The cross context VM structure.
2343	* @param pVCpu The cross context virtual CPU structure.
2344	* @remarks Careful with critsects.
2345	*/
2346	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu)
2347	{
2348	/*
2349	* We must also check for pending critsect exits or else we can deadlock
2350	* when entering other critsects here.
2351	*/
2352	if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_PDM_CRITSECT))
2353	PDMCritSectBothFF(pVCpu);
2354
2355	switch (pVCpu->vmm.s.enmCallRing3Operation)
2356	{
2357	/*
2358	* Acquire a critical section.
2359	*/
2360	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
2361	{
2362	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectEnterEx((PPDMCRITSECT)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2363	true /fCallRing3/);
2364	break;
2365	}
2366
2367	/*
2368	* Enter a r/w critical section exclusively.
2369	*/
2370	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_EXCL:
2371	{
2372	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterExclEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2373	true /fCallRing3/);
2374	break;
2375	}
2376
2377	/*
2378	* Enter a r/w critical section shared.
2379	*/
2380	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_SHARED:
2381	{
2382	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterSharedEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2383	true /fCallRing3/);
2384	break;
2385	}
2386
2387	/*
2388	* Acquire the PDM lock.
2389	*/
2390	case VMMCALLRING3_PDM_LOCK:
2391	{
2392	pVCpu->vmm.s.rcCallRing3 = PDMR3LockCall(pVM);
2393	break;
2394	}
2395
2396	/*
2397	* Grow the PGM pool.
2398	*/
2399	case VMMCALLRING3_PGM_POOL_GROW:
2400	{
2401	pVCpu->vmm.s.rcCallRing3 = PGMR3PoolGrow(pVM);
2402	break;
2403	}
2404
2405	/*
2406	* Maps an page allocation chunk into ring-3 so ring-0 can use it.
2407	*/
2408	case VMMCALLRING3_PGM_MAP_CHUNK:
2409	{
2410	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysChunkMap(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2411	break;
2412	}
2413
2414	/*
2415	* Allocates more handy pages.
2416	*/
2417	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
2418	{
2419	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateHandyPages(pVM);
2420	break;
2421	}
2422
2423	/*
2424	* Allocates a large page.
2425	*/
2426	case VMMCALLRING3_PGM_ALLOCATE_LARGE_HANDY_PAGE:
2427	{
2428	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateLargeHandyPage(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2429	break;
2430	}
2431
2432	/*
2433	* Acquire the PGM lock.
2434	*/
2435	case VMMCALLRING3_PGM_LOCK:
2436	{
2437	pVCpu->vmm.s.rcCallRing3 = PGMR3LockCall(pVM);
2438	break;
2439	}
2440
2441	/*
2442	* Acquire the MM hypervisor heap lock.
2443	*/
2444	case VMMCALLRING3_MMHYPER_LOCK:
2445	{
2446	pVCpu->vmm.s.rcCallRing3 = MMR3LockCall(pVM);
2447	break;
2448	}
2449
2450	#ifdef VBOX_WITH_REM
2451	/*
2452	* Flush REM handler notifications.
2453	*/
2454	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
2455	{
2456	REMR3ReplayHandlerNotifications(pVM);
2457	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2458	break;
2459	}
2460	#endif
2461
2462	/*
2463	* This is a noop. We just take this route to avoid unnecessary
2464	* tests in the loops.
2465	*/
2466	case VMMCALLRING3_VMM_LOGGER_FLUSH:
2467	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2468	LogAlways(("FLUSH\n"));
2469	break;
2470
2471	/*
2472	* Set the VM error message.
2473	*/
2474	case VMMCALLRING3_VM_SET_ERROR:
2475	VMR3SetErrorWorker(pVM);
2476	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2477	break;
2478
2479	/*
2480	* Set the VM runtime error message.
2481	*/
2482	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
2483	pVCpu->vmm.s.rcCallRing3 = VMR3SetRuntimeErrorWorker(pVM);
2484	break;
2485
2486	/*
2487	* Signal a ring 0 hypervisor assertion.
2488	* Cancel the longjmp operation that's in progress.
2489	*/
2490	case VMMCALLRING3_VM_R0_ASSERTION:
2491	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2492	pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call = false;
2493	#ifdef RT_ARCH_X86
2494	pVCpu->vmm.s.CallRing3JmpBufR0.eip = 0;
2495	#else
2496	pVCpu->vmm.s.CallRing3JmpBufR0.rip = 0;
2497	#endif
2498	#ifdef VMM_R0_SWITCH_STACK
2499	(uint64_t )pVCpu->vmm.s.pbEMTStackR3 = 0; /* clear marker */
2500	#endif
2501	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg1));
2502	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg2));
2503	return VERR_VMM_RING0_ASSERTION;
2504
2505	/*
2506	* A forced switch to ring 0 for preemption purposes.
2507	*/
2508	case VMMCALLRING3_VM_R0_PREEMPT:
2509	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2510	break;
2511
2512	default:
2513	AssertMsgFailed(("enmCallRing3Operation=%d\n", pVCpu->vmm.s.enmCallRing3Operation));
2514	return VERR_VMM_UNKNOWN_RING3_CALL;
2515	}
2516
2517	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2518	return VINF_SUCCESS;
2519	}
2520
2521
2522	/**
2523	* Displays the Force action Flags.
2524	*
2525	* @param pVM The cross context VM structure.
2526	* @param pHlp The output helpers.
2527	* @param pszArgs The additional arguments (ignored).
2528	*/
2529	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2530	{
2531	int c;
2532	uint32_t f;
2533	NOREF(pszArgs);
2534
2535	#define PRINT_FLAG(prf,flag) do { \
2536	if (f & (prf##flag)) \
2537	{ \
2538	static const char *s_psz = #flag; \
2539	if (!(c % 6)) \
2540	pHlp->pfnPrintf(pHlp, "%s\n %s", c ? "," : "", s_psz); \
2541	else \
2542	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2543	c++; \
2544	f &= ~(prf##flag); \
2545	} \
2546	} while (0)
2547
2548	#define PRINT_GROUP(prf,grp,sfx) do { \
2549	if (f & (prf##grp##sfx)) \
2550	{ \
2551	static const char *s_psz = #grp; \
2552	if (!(c % 5)) \
2553	pHlp->pfnPrintf(pHlp, "%s %s", c ? ",\n" : " Groups:\n", s_psz); \
2554	else \
2555	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2556	c++; \
2557	} \
2558	} while (0)
2559
2560	/*
2561	* The global flags.
2562	*/
2563	const uint32_t fGlobalForcedActions = pVM->fGlobalForcedActions;
2564	pHlp->pfnPrintf(pHlp, "Global FFs: %#RX32", fGlobalForcedActions);
2565
2566	/* show the flag mnemonics */
2567	c = 0;
2568	f = fGlobalForcedActions;
2569	PRINT_FLAG(VM_FF_,TM_VIRTUAL_SYNC);
2570	PRINT_FLAG(VM_FF_,PDM_QUEUES);
2571	PRINT_FLAG(VM_FF_,PDM_DMA);
2572	PRINT_FLAG(VM_FF_,DBGF);
2573	PRINT_FLAG(VM_FF_,REQUEST);
2574	PRINT_FLAG(VM_FF_,CHECK_VM_STATE);
2575	PRINT_FLAG(VM_FF_,RESET);
2576	PRINT_FLAG(VM_FF_,EMT_RENDEZVOUS);
2577	PRINT_FLAG(VM_FF_,PGM_NEED_HANDY_PAGES);
2578	PRINT_FLAG(VM_FF_,PGM_NO_MEMORY);
2579	PRINT_FLAG(VM_FF_,PGM_POOL_FLUSH_PENDING);
2580	PRINT_FLAG(VM_FF_,REM_HANDLER_NOTIFY);
2581	PRINT_FLAG(VM_FF_,DEBUG_SUSPEND);
2582	if (f)
2583	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX32\n", c ? "," : "", f);
2584	else
2585	pHlp->pfnPrintf(pHlp, "\n");
2586
2587	/* the groups */
2588	c = 0;
2589	f = fGlobalForcedActions;
2590	PRINT_GROUP(VM_FF_,EXTERNAL_SUSPENDED,_MASK);
2591	PRINT_GROUP(VM_FF_,EXTERNAL_HALTED,_MASK);
2592	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE,_MASK);
2593	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2594	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_POST,_MASK);
2595	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY_POST,_MASK);
2596	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY,_MASK);
2597	PRINT_GROUP(VM_FF_,ALL_REM,_MASK);
2598	if (c)
2599	pHlp->pfnPrintf(pHlp, "\n");
2600
2601	/*
2602	* Per CPU flags.
2603	*/
2604	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2605	{
2606	PVMCPU pVCpu = pVM->apCpusR3[i];
2607	const uint64_t fLocalForcedActions = pVCpu->fLocalForcedActions;
2608	pHlp->pfnPrintf(pHlp, "CPU %u FFs: %#RX64", i, fLocalForcedActions);
2609
2610	/* show the flag mnemonics */
2611	c = 0;
2612	f = fLocalForcedActions;
2613	PRINT_FLAG(VMCPU_FF_,INTERRUPT_APIC);
2614	PRINT_FLAG(VMCPU_FF_,INTERRUPT_PIC);
2615	PRINT_FLAG(VMCPU_FF_,TIMER);
2616	PRINT_FLAG(VMCPU_FF_,INTERRUPT_NMI);
2617	PRINT_FLAG(VMCPU_FF_,INTERRUPT_SMI);
2618	PRINT_FLAG(VMCPU_FF_,PDM_CRITSECT);
2619	PRINT_FLAG(VMCPU_FF_,UNHALT);
2620	PRINT_FLAG(VMCPU_FF_,IEM);
2621	PRINT_FLAG(VMCPU_FF_,UPDATE_APIC);
2622	PRINT_FLAG(VMCPU_FF_,DBGF);
2623	PRINT_FLAG(VMCPU_FF_,REQUEST);
2624	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_CR3);
2625	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_PAE_PDPES);
2626	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3);
2627	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3_NON_GLOBAL);
2628	PRINT_FLAG(VMCPU_FF_,TLB_FLUSH);
2629	PRINT_FLAG(VMCPU_FF_,INHIBIT_INTERRUPTS);
2630	PRINT_FLAG(VMCPU_FF_,BLOCK_NMIS);
2631	PRINT_FLAG(VMCPU_FF_,TO_R3);
2632	PRINT_FLAG(VMCPU_FF_,IOM);
2633	if (f)
2634	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX64\n", c ? "," : "", f);
2635	else
2636	pHlp->pfnPrintf(pHlp, "\n");
2637
2638	if (fLocalForcedActions & VMCPU_FF_INHIBIT_INTERRUPTS)
2639	pHlp->pfnPrintf(pHlp, " intr inhibit RIP: %RGp\n", EMGetInhibitInterruptsPC(pVCpu));
2640
2641	/* the groups */
2642	c = 0;
2643	f = fLocalForcedActions;
2644	PRINT_GROUP(VMCPU_FF_,EXTERNAL_SUSPENDED,_MASK);
2645	PRINT_GROUP(VMCPU_FF_,EXTERNAL_HALTED,_MASK);
2646	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE,_MASK);
2647	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2648	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_POST,_MASK);
2649	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY_POST,_MASK);
2650	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY,_MASK);
2651	PRINT_GROUP(VMCPU_FF_,RESUME_GUEST,_MASK);
2652	PRINT_GROUP(VMCPU_FF_,HM_TO_R3,_MASK);
2653	PRINT_GROUP(VMCPU_FF_,ALL_REM,_MASK);
2654	if (c)
2655	pHlp->pfnPrintf(pHlp, "\n");
2656	}
2657
2658	#undef PRINT_FLAG
2659	#undef PRINT_GROUP
2660	}
2661

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/VMM/VMMR3/VMM.cpp@ 80191

Download in other formats: