VMM.cpp@ 71289

Last change on this file since 71289 was 71222, checked in by vboxsync, 7 years ago
NEM/win,VMM,PGM: Ported NEM runloop to ring-0. bugref:9044
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 114.6 KB

Line
1	/* $Id: VMM.cpp 71222 2018-03-05 22:07:48Z vboxsync $ */
2	/** @file
3	* VMM - The Virtual Machine Monitor Core.
4	*/
5
6	/*
7	* Copyright (C) 2006-2017 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_csam
32	* - @subpage pg_dbgf
33	* - @subpage pg_em
34	* - @subpage pg_gim
35	* - @subpage pg_gmm
36	* - @subpage pg_gvmm
37	* - @subpage pg_hm
38	* - @subpage pg_iem
39	* - @subpage pg_iom
40	* - @subpage pg_mm
41	* - @subpage pg_patm
42	* - @subpage pg_pdm
43	* - @subpage pg_pgm
44	* - @subpage pg_rem
45	* - @subpage pg_selm
46	* - @subpage pg_ssm
47	* - @subpage pg_stam
48	* - @subpage pg_tm
49	* - @subpage pg_trpm
50	* - @subpage pg_vm
51	*
52	*
53	* @see @ref grp_vmm @ref grp_vm @subpage pg_vmm_guideline @subpage pg_raw
54	*
55	*
56	* @section sec_vmmstate VMM State
57	*
58	* @image html VM_Statechart_Diagram.gif
59	*
60	* To be written.
61	*
62	*
63	* @subsection subsec_vmm_init VMM Initialization
64	*
65	* To be written.
66	*
67	*
68	* @subsection subsec_vmm_term VMM Termination
69	*
70	* To be written.
71	*
72	*
73	* @section sec_vmm_limits VMM Limits
74	*
75	* There are various resource limits imposed by the VMM and it's
76	* sub-components. We'll list some of them here.
77	*
78	* On 64-bit hosts:
79	* - Max 8191 VMs. Imposed by GVMM's handle allocation (GVMM_MAX_HANDLES),
80	* can be increased up to 64K - 1.
81	* - Max 16TB - 64KB of the host memory can be used for backing VM RAM and
82	* ROM pages. The limit is imposed by the 32-bit page ID used by GMM.
83	* - A VM can be assigned all the memory we can use (16TB), however, the
84	* Main API will restrict this to 2TB (MM_RAM_MAX_IN_MB).
85	* - Max 32 virtual CPUs (VMM_MAX_CPU_COUNT).
86	*
87	* On 32-bit hosts:
88	* - Max 127 VMs. Imposed by GMM's per page structure.
89	* - Max 64GB - 64KB of the host memory can be used for backing VM RAM and
90	* ROM pages. The limit is imposed by the 28-bit page ID used
91	* internally in GMM. It is also limited by PAE.
92	* - A VM can be assigned all the memory GMM can allocate, however, the
93	* Main API will restrict this to 3584MB (MM_RAM_MAX_IN_MB).
94	* - Max 32 virtual CPUs (VMM_MAX_CPU_COUNT).
95	*
96	*/
97
98
99	/*********************************************************************************************************************************
100	* Header Files *
101	*********************************************************************************************************************************/
102	#define LOG_GROUP LOG_GROUP_VMM
103	#include <VBox/vmm/vmm.h>
104	#include <VBox/vmm/vmapi.h>
105	#include <VBox/vmm/pgm.h>
106	#include <VBox/vmm/cfgm.h>
107	#include <VBox/vmm/pdmqueue.h>
108	#include <VBox/vmm/pdmcritsect.h>
109	#include <VBox/vmm/pdmcritsectrw.h>
110	#include <VBox/vmm/pdmapi.h>
111	#include <VBox/vmm/cpum.h>
112	#include <VBox/vmm/gim.h>
113	#include <VBox/vmm/mm.h>
114	#include <VBox/vmm/nem.h>
115	#include <VBox/vmm/iom.h>
116	#include <VBox/vmm/trpm.h>
117	#include <VBox/vmm/selm.h>
118	#include <VBox/vmm/em.h>
119	#include <VBox/sup.h>
120	#include <VBox/vmm/dbgf.h>
121	#include <VBox/vmm/csam.h>
122	#include <VBox/vmm/patm.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/ftm.h>
129	#include <VBox/vmm/tm.h>
130	#include "VMMInternal.h"
131	#include "VMMSwitcher.h"
132	#include <VBox/vmm/vm.h>
133	#include <VBox/vmm/uvm.h>
134
135	#include <VBox/err.h>
136	#include <VBox/param.h>
137	#include <VBox/version.h>
138	#include <VBox/vmm/hm.h>
139	#include <iprt/assert.h>
140	#include <iprt/alloc.h>
141	#include <iprt/asm.h>
142	#include <iprt/time.h>
143	#include <iprt/semaphore.h>
144	#include <iprt/stream.h>
145	#include <iprt/string.h>
146	#include <iprt/stdarg.h>
147	#include <iprt/ctype.h>
148	#include <iprt/x86.h>
149
150
151	/*********************************************************************************************************************************
152	* Defined Constants And Macros *
153	*********************************************************************************************************************************/
154	/** The saved state version. */
155	#define VMM_SAVED_STATE_VERSION 4
156	/** The saved state version used by v3.0 and earlier. (Teleportation) */
157	#define VMM_SAVED_STATE_VERSION_3_0 3
158
159
160	/*********************************************************************************************************************************
161	* Internal Functions *
162	*********************************************************************************************************************************/
163	static int vmmR3InitStacks(PVM pVM);
164	static int vmmR3InitLoggers(PVM pVM);
165	static void vmmR3InitRegisterStats(PVM pVM);
166	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM);
167	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
168	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, PTMTIMER pTimer, void *pvUser);
169	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
170	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser);
171	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu);
172	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
173
174
175	/**
176	* Initializes the VMM.
177	*
178	* @returns VBox status code.
179	* @param pVM The cross context VM structure.
180	*/
181	VMMR3_INT_DECL(int) VMMR3Init(PVM pVM)
182	{
183	LogFlow(("VMMR3Init\n"));
184
185	/*
186	* Assert alignment, sizes and order.
187	*/
188	AssertMsg(pVM->vmm.s.offVM == 0, ("Already initialized!\n"));
189	AssertCompile(sizeof(pVM->vmm.s) <= sizeof(pVM->vmm.padding));
190	AssertCompile(sizeof(pVM->aCpus[0].vmm.s) <= sizeof(pVM->aCpus[0].vmm.padding));
191
192	/*
193	* Init basic VM VMM members.
194	*/
195	pVM->vmm.s.offVM = RT_OFFSETOF(VM, vmm);
196	pVM->vmm.s.pahEvtRendezvousEnterOrdered = NULL;
197	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
198	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
199	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
200	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
201	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
202	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
203	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
204	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
205
206	/** @cfgm{/YieldEMTInterval, uint32_t, 1, UINT32_MAX, 23, ms}
207	* The EMT yield interval. The EMT yielding is a hack we employ to play a
208	* bit nicer with the rest of the system (like for instance the GUI).
209	*/
210	int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "YieldEMTInterval", &pVM->vmm.s.cYieldEveryMillies,
211	23 /* Value arrived at after experimenting with the grub boot prompt. */);
212	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"YieldEMTInterval\", rc=%Rrc\n", rc), rc);
213
214
215	/** @cfgm{/VMM/UsePeriodicPreemptionTimers, boolean, true}
216	* Controls whether we employ per-cpu preemption timers to limit the time
217	* spent executing guest code. This option is not available on all
218	* platforms and we will silently ignore this setting then. If we are
219	* running in VT-x mode, we will use the VMX-preemption timer instead of
220	* this one when possible.
221	*/
222	PCFGMNODE pCfgVMM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "VMM");
223	rc = CFGMR3QueryBoolDef(pCfgVMM, "UsePeriodicPreemptionTimers", &pVM->vmm.s.fUsePeriodicPreemptionTimers, true);
224	AssertMsgRCReturn(rc, ("Configuration error. Failed to query \"VMM/UsePeriodicPreemptionTimers\", rc=%Rrc\n", rc), rc);
225
226	/*
227	* Initialize the VMM rendezvous semaphores.
228	*/
229	pVM->vmm.s.pahEvtRendezvousEnterOrdered = (PRTSEMEVENT)MMR3HeapAlloc(pVM, MM_TAG_VMM, sizeof(RTSEMEVENT) * pVM->cCpus);
230	if (!pVM->vmm.s.pahEvtRendezvousEnterOrdered)
231	return VERR_NO_MEMORY;
232	for (VMCPUID i = 0; i < pVM->cCpus; i++)
233	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
234	for (VMCPUID i = 0; i < pVM->cCpus; i++)
235	{
236	rc = RTSemEventCreate(&pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
237	AssertRCReturn(rc, rc);
238	}
239	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousEnterOneByOne);
240	AssertRCReturn(rc, rc);
241	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
242	AssertRCReturn(rc, rc);
243	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousDone);
244	AssertRCReturn(rc, rc);
245	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousDoneCaller);
246	AssertRCReturn(rc, rc);
247	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPush);
248	AssertRCReturn(rc, rc);
249	rc = RTSemEventMultiCreate(&pVM->vmm.s.hEvtMulRendezvousRecursionPop);
250	AssertRCReturn(rc, rc);
251	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
252	AssertRCReturn(rc, rc);
253	rc = RTSemEventCreate(&pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
254	AssertRCReturn(rc, rc);
255
256	/*
257	* Register the saved state data unit.
258	*/
259	rc = SSMR3RegisterInternal(pVM, "vmm", 1, VMM_SAVED_STATE_VERSION, VMM_STACK_SIZE + sizeof(RTGCPTR),
260	NULL, NULL, NULL,
261	NULL, vmmR3Save, NULL,
262	NULL, vmmR3Load, NULL);
263	if (RT_FAILURE(rc))
264	return rc;
265
266	/*
267	* Register the Ring-0 VM handle with the session for fast ioctl calls.
268	*/
269	rc = SUPR3SetVMForFastIOCtl(pVM->pVMR0);
270	if (RT_FAILURE(rc))
271	return rc;
272
273	/*
274	* Init various sub-components.
275	*/
276	rc = vmmR3SwitcherInit(pVM);
277	if (RT_SUCCESS(rc))
278	{
279	rc = vmmR3InitStacks(pVM);
280	if (RT_SUCCESS(rc))
281	{
282	rc = vmmR3InitLoggers(pVM);
283
284	#ifdef VBOX_WITH_NMI
285	/*
286	* Allocate mapping for the host APIC.
287	*/
288	if (RT_SUCCESS(rc))
289	{
290	rc = MMR3HyperReserve(pVM, PAGE_SIZE, "Host APIC", &pVM->vmm.s.GCPtrApicBase);
291	AssertRC(rc);
292	}
293	#endif
294	if (RT_SUCCESS(rc))
295	{
296	/*
297	* Debug info and statistics.
298	*/
299	DBGFR3InfoRegisterInternal(pVM, "fflags", "Displays the current Forced actions Flags.", vmmR3InfoFF);
300	vmmR3InitRegisterStats(pVM);
301	vmmInitFormatTypes();
302
303	return VINF_SUCCESS;
304	}
305	}
306	/** @todo Need failure cleanup. */
307
308	//more todo in here?
309	//if (RT_SUCCESS(rc))
310	//{
311	//}
312	//int rc2 = vmmR3TermCoreCode(pVM);
313	//AssertRC(rc2));
314	}
315
316	return rc;
317	}
318
319
320	/**
321	* Allocate & setup the VMM RC stack(s) (for EMTs).
322	*
323	* The stacks are also used for long jumps in Ring-0.
324	*
325	* @returns VBox status code.
326	* @param pVM The cross context VM structure.
327	*
328	* @remarks The optional guard page gets it protection setup up during R3 init
329	* completion because of init order issues.
330	*/
331	static int vmmR3InitStacks(PVM pVM)
332	{
333	int rc = VINF_SUCCESS;
334	#ifdef VMM_R0_SWITCH_STACK
335	uint32_t fFlags = MMHYPER_AONR_FLAGS_KERNEL_MAPPING;
336	#else
337	uint32_t fFlags = 0;
338	#endif
339
340	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
341	{
342	PVMCPU pVCpu = &pVM->aCpus[idCpu];
343
344	#ifdef VBOX_STRICT_VMM_STACK
345	rc = MMR3HyperAllocOnceNoRelEx(pVM, PAGE_SIZE + VMM_STACK_SIZE + PAGE_SIZE,
346	#else
347	rc = MMR3HyperAllocOnceNoRelEx(pVM, VMM_STACK_SIZE,
348	#endif
349	PAGE_SIZE, MM_TAG_VMM, fFlags, (void **)&pVCpu->vmm.s.pbEMTStackR3);
350	if (RT_SUCCESS(rc))
351	{
352	#ifdef VBOX_STRICT_VMM_STACK
353	pVCpu->vmm.s.pbEMTStackR3 += PAGE_SIZE;
354	#endif
355	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
356	/* MMHyperR3ToR0 returns R3 when not doing hardware assisted virtualization. */
357	if (VM_IS_RAW_MODE_ENABLED(pVM))
358	pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack = NIL_RTR0PTR;
359	else
360	#endif
361	pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
362	pVCpu->vmm.s.pbEMTStackRC = MMHyperR3ToRC(pVM, pVCpu->vmm.s.pbEMTStackR3);
363	pVCpu->vmm.s.pbEMTStackBottomRC = pVCpu->vmm.s.pbEMTStackRC + VMM_STACK_SIZE;
364	AssertRelease(pVCpu->vmm.s.pbEMTStackRC);
365
366	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC);
367	}
368	}
369
370	return rc;
371	}
372
373
374	/**
375	* Initialize the loggers.
376	*
377	* @returns VBox status code.
378	* @param pVM The cross context VM structure.
379	*/
380	static int vmmR3InitLoggers(PVM pVM)
381	{
382	int rc;
383	#define RTLogCalcSizeForR0(cGroups, fFlags) (RT_OFFSETOF(VMMR0LOGGER, Logger.afGroups[cGroups]) + PAGE_SIZE)
384
385	/*
386	* Allocate RC & R0 Logger instances (they are finalized in the relocator).
387	*/
388	#ifdef LOG_ENABLED
389	PRTLOGGER pLogger = RTLogDefaultInstance();
390	if (pLogger)
391	{
392	if (VM_IS_RAW_MODE_ENABLED(pVM))
393	{
394	pVM->vmm.s.cbRCLogger = RT_OFFSETOF(RTLOGGERRC, afGroups[pLogger->cGroups]);
395	rc = MMR3HyperAllocOnceNoRel(pVM, pVM->vmm.s.cbRCLogger, 0, MM_TAG_VMM, (void **)&pVM->vmm.s.pRCLoggerR3);
396	if (RT_FAILURE(rc))
397	return rc;
398	pVM->vmm.s.pRCLoggerRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pRCLoggerR3);
399	}
400
401	# ifdef VBOX_WITH_R0_LOGGING
402	size_t const cbLogger = RTLogCalcSizeForR0(pLogger->cGroups, 0);
403	for (VMCPUID i = 0; i < pVM->cCpus; i++)
404	{
405	PVMCPU pVCpu = &pVM->aCpus[i];
406	rc = MMR3HyperAllocOnceNoRelEx(pVM, cbLogger, PAGE_SIZE, MM_TAG_VMM, MMHYPER_AONR_FLAGS_KERNEL_MAPPING,
407	(void **)&pVCpu->vmm.s.pR0LoggerR3);
408	if (RT_FAILURE(rc))
409	return rc;
410	pVCpu->vmm.s.pR0LoggerR3->pVM = pVM->pVMR0;
411	//pVCpu->vmm.s.pR0LoggerR3->fCreated = false;
412	pVCpu->vmm.s.pR0LoggerR3->cbLogger = (uint32_t)cbLogger;
413	pVCpu->vmm.s.pR0LoggerR0 = MMHyperR3ToR0(pVM, pVCpu->vmm.s.pR0LoggerR3);
414	}
415	# endif
416	}
417	#endif /* LOG_ENABLED */
418
419	#ifdef VBOX_WITH_RC_RELEASE_LOGGING
420	/*
421	* Allocate RC release logger instances (finalized in the relocator).
422	*/
423	if (VM_IS_RAW_MODE_ENABLED(pVM))
424	{
425	PRTLOGGER pRelLogger = RTLogRelGetDefaultInstance();
426	if (pRelLogger)
427	{
428	pVM->vmm.s.cbRCRelLogger = RT_OFFSETOF(RTLOGGERRC, afGroups[pRelLogger->cGroups]);
429	rc = MMR3HyperAllocOnceNoRel(pVM, pVM->vmm.s.cbRCRelLogger, 0, MM_TAG_VMM, (void **)&pVM->vmm.s.pRCRelLoggerR3);
430	if (RT_FAILURE(rc))
431	return rc;
432	pVM->vmm.s.pRCRelLoggerRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pRCRelLoggerR3);
433	}
434	}
435	#endif /* VBOX_WITH_RC_RELEASE_LOGGING */
436	return VINF_SUCCESS;
437	}
438
439
440	/**
441	* VMMR3Init worker that register the statistics with STAM.
442	*
443	* @param pVM The cross context VM structure.
444	*/
445	static void vmmR3InitRegisterStats(PVM pVM)
446	{
447	RT_NOREF_PV(pVM);
448
449	/*
450	* Statistics.
451	*/
452	STAM_REG(pVM, &pVM->vmm.s.StatRunRC, STAMTYPE_COUNTER, "/VMM/RunRC", STAMUNIT_OCCURENCES, "Number of context switches.");
453	STAM_REG(pVM, &pVM->vmm.s.StatRZRetNormal, STAMTYPE_COUNTER, "/VMM/RZRet/Normal", STAMUNIT_OCCURENCES, "Number of VINF_SUCCESS returns.");
454	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterrupt, STAMTYPE_COUNTER, "/VMM/RZRet/Interrupt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT returns.");
455	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptHyper, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptHyper", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_HYPER returns.");
456	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGuestTrap, STAMTYPE_COUNTER, "/VMM/RZRet/GuestTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_GUEST_TRAP returns.");
457	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitch, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitch", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH returns.");
458	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRingSwitchInt, STAMTYPE_COUNTER, "/VMM/RZRet/RingSwitchInt", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_RING_SWITCH_INT returns.");
459	STAM_REG(pVM, &pVM->vmm.s.StatRZRetStaleSelector, STAMTYPE_COUNTER, "/VMM/RZRet/StaleSelector", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_STALE_SELECTOR returns.");
460	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIRETTrap, STAMTYPE_COUNTER, "/VMM/RZRet/IRETTrap", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_IRET_TRAP returns.");
461	STAM_REG(pVM, &pVM->vmm.s.StatRZRetEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/Emulate", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION returns.");
462	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOBlockEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/EmulateIOBlock", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_EMULATE_IO_BLOCK returns.");
463	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchEmulate, STAMTYPE_COUNTER, "/VMM/RZRet/PatchEmulate", STAMUNIT_OCCURENCES, "Number of VINF_PATCH_EMULATE_INSTR returns.");
464	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIORead, STAMTYPE_COUNTER, "/VMM/RZRet/IORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_READ returns.");
465	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_WRITE returns.");
466	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/IOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_IOPORT_COMMIT_WRITE returns.");
467	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIORead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIORead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ returns.");
468	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_WRITE returns.");
469	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOCommitWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOCommitWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_COMMIT_WRITE returns.");
470	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOReadWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOReadWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_R3_MMIO_READ_WRITE returns.");
471	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchRead, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchRead", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_READ returns.");
472	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMMIOPatchWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MMIOPatchWrite", STAMUNIT_OCCURENCES, "Number of VINF_IOM_HC_MMIO_PATCH_WRITE returns.");
473	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRRead, STAMTYPE_COUNTER, "/VMM/RZRet/MSRRead", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_READ returns.");
474	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMSRWrite, STAMTYPE_COUNTER, "/VMM/RZRet/MSRWrite", STAMUNIT_OCCURENCES, "Number of VINF_CPUM_R3_MSR_WRITE returns.");
475	STAM_REG(pVM, &pVM->vmm.s.StatRZRetLDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/LDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_GDT_FAULT returns.");
476	STAM_REG(pVM, &pVM->vmm.s.StatRZRetGDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/GDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_LDT_FAULT returns.");
477	STAM_REG(pVM, &pVM->vmm.s.StatRZRetIDTFault, STAMTYPE_COUNTER, "/VMM/RZRet/IDTFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_IDT_FAULT returns.");
478	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTSSFault, STAMTYPE_COUNTER, "/VMM/RZRet/TSSFault", STAMUNIT_OCCURENCES, "Number of VINF_EM_EXECUTE_INSTRUCTION_TSS_FAULT returns.");
479	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCSAMTask, STAMTYPE_COUNTER, "/VMM/RZRet/CSAMTask", STAMUNIT_OCCURENCES, "Number of VINF_CSAM_PENDING_ACTION returns.");
480	STAM_REG(pVM, &pVM->vmm.s.StatRZRetSyncCR3, STAMTYPE_COUNTER, "/VMM/RZRet/SyncCR", STAMUNIT_OCCURENCES, "Number of VINF_PGM_SYNC_CR3 returns.");
481	STAM_REG(pVM, &pVM->vmm.s.StatRZRetMisc, STAMTYPE_COUNTER, "/VMM/RZRet/Misc", STAMUNIT_OCCURENCES, "Number of misc returns.");
482	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchInt3, STAMTYPE_COUNTER, "/VMM/RZRet/PatchInt3", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_INT3 returns.");
483	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchPF, STAMTYPE_COUNTER, "/VMM/RZRet/PatchPF", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_PF returns.");
484	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchGP, STAMTYPE_COUNTER, "/VMM/RZRet/PatchGP", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PATCH_TRAP_GP returns.");
485	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchIretIRQ, STAMTYPE_COUNTER, "/VMM/RZRet/PatchIret", STAMUNIT_OCCURENCES, "Number of VINF_PATM_PENDING_IRQ_AFTER_IRET returns.");
486	STAM_REG(pVM, &pVM->vmm.s.StatRZRetRescheduleREM, STAMTYPE_COUNTER, "/VMM/RZRet/ScheduleREM", STAMUNIT_OCCURENCES, "Number of VINF_EM_RESCHEDULE_REM returns.");
487	STAM_REG(pVM, &pVM->vmm.s.StatRZRetToR3Total, STAMTYPE_COUNTER, "/VMM/RZRet/ToR3", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TO_R3 returns.");
488	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.");
489	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.");
490	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.");
491	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.");
492	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.");
493	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.");
494	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.");
495	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.");
496	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.");
497	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.");
498	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.");
499	STAM_REG(pVM, &pVM->vmm.s.StatRZRetTimerPending, STAMTYPE_COUNTER, "/VMM/RZRet/TimerPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_TIMER_PENDING returns.");
500	STAM_REG(pVM, &pVM->vmm.s.StatRZRetInterruptPending, STAMTYPE_COUNTER, "/VMM/RZRet/InterruptPending", STAMUNIT_OCCURENCES, "Number of VINF_EM_RAW_INTERRUPT_PENDING returns.");
501	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPATMDuplicateFn, STAMTYPE_COUNTER, "/VMM/RZRet/PATMDuplicateFn", STAMUNIT_OCCURENCES, "Number of VINF_PATM_DUPLICATE_FUNCTION returns.");
502	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMChangeMode, STAMTYPE_COUNTER, "/VMM/RZRet/PGMChangeMode", STAMUNIT_OCCURENCES, "Number of VINF_PGM_CHANGE_MODE returns.");
503	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPGMFlushPending, STAMTYPE_COUNTER, "/VMM/RZRet/PGMFlushPending", STAMUNIT_OCCURENCES, "Number of VINF_PGM_POOL_FLUSH_PENDING returns.");
504	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPendingRequest, STAMTYPE_COUNTER, "/VMM/RZRet/PendingRequest", STAMUNIT_OCCURENCES, "Number of VINF_EM_PENDING_REQUEST returns.");
505	STAM_REG(pVM, &pVM->vmm.s.StatRZRetPatchTPR, STAMTYPE_COUNTER, "/VMM/RZRet/PatchTPR", STAMUNIT_OCCURENCES, "Number of VINF_EM_HM_PATCH_TPR_INSTR returns.");
506	STAM_REG(pVM, &pVM->vmm.s.StatRZRetCallRing3, STAMTYPE_COUNTER, "/VMM/RZCallR3/Misc", STAMUNIT_OCCURENCES, "Number of Other ring-3 calls.");
507	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_LOCK calls.");
508	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPDMCritSectEnter, STAMTYPE_COUNTER, "/VMM/RZCallR3/PDMCritSectEnter", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PDM_CRITSECT_ENTER calls.");
509	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMLock, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMLock", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_LOCK calls.");
510	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMPoolGrow, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMPoolGrow", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_POOL_GROW calls.");
511	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMMapChunk, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMMapChunk", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_MAP_CHUNK calls.");
512	STAM_REG(pVM, &pVM->vmm.s.StatRZCallPGMAllocHandy, STAMTYPE_COUNTER, "/VMM/RZCallR3/PGMAllocHandy", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES calls.");
513	STAM_REG(pVM, &pVM->vmm.s.StatRZCallRemReplay, STAMTYPE_COUNTER, "/VMM/RZCallR3/REMReplay", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS calls.");
514	STAM_REG(pVM, &pVM->vmm.s.StatRZCallLogFlush, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMMLogFlush", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VMM_LOGGER_FLUSH calls.");
515	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMSetError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_ERROR calls.");
516	STAM_REG(pVM, &pVM->vmm.s.StatRZCallVMSetRuntimeError, STAMTYPE_COUNTER, "/VMM/RZCallR3/VMRuntimeError", STAMUNIT_OCCURENCES, "Number of VMMCALLRING3_VM_SET_RUNTIME_ERROR calls.");
517
518	#ifdef VBOX_WITH_STATISTICS
519	for (VMCPUID i = 0; i < pVM->cCpus; i++)
520	{
521	STAMR3RegisterF(pVM, &pVM->aCpus[i].vmm.s.CallRing3JmpBufR0.cbUsedMax, STAMTYPE_U32_RESET, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Max amount of stack used.", "/VMM/Stack/CPU%u/Max", i);
522	STAMR3RegisterF(pVM, &pVM->aCpus[i].vmm.s.CallRing3JmpBufR0.cbUsedAvg, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Average stack usage.", "/VMM/Stack/CPU%u/Avg", i);
523	STAMR3RegisterF(pVM, &pVM->aCpus[i].vmm.s.CallRing3JmpBufR0.cUsedTotal, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of stack usages.", "/VMM/Stack/CPU%u/Uses", i);
524	}
525	#endif
526	}
527
528
529	/**
530	* Worker for VMMR3InitR0 that calls ring-0 to do EMT specific initialization.
531	*
532	* @returns VBox status code.
533	* @param pVM The cross context VM structure.
534	* @param pVCpu The cross context per CPU structure.
535	* @thread EMT(pVCpu)
536	*/
537	static DECLCALLBACK(int) vmmR3InitR0Emt(PVM pVM, PVMCPU pVCpu)
538	{
539	return VMMR3CallR0Emt(pVM, pVCpu, VMMR0_DO_VMMR0_INIT_EMT, 0, NULL);
540	}
541
542
543	/**
544	* Initializes the R0 VMM.
545	*
546	* @returns VBox status code.
547	* @param pVM The cross context VM structure.
548	*/
549	VMMR3_INT_DECL(int) VMMR3InitR0(PVM pVM)
550	{
551	int rc;
552	PVMCPU pVCpu = VMMGetCpu(pVM);
553	Assert(pVCpu && pVCpu->idCpu == 0);
554
555	#ifdef LOG_ENABLED
556	/*
557	* Initialize the ring-0 logger if we haven't done so yet.
558	*/
559	if ( pVCpu->vmm.s.pR0LoggerR3
560	&& !pVCpu->vmm.s.pR0LoggerR3->fCreated)
561	{
562	rc = VMMR3UpdateLoggers(pVM);
563	if (RT_FAILURE(rc))
564	return rc;
565	}
566	#endif
567
568	/*
569	* Call Ring-0 entry with init code.
570	*/
571	for (;;)
572	{
573	#ifdef NO_SUPCALLR0VMM
574	//rc = VERR_GENERAL_FAILURE;
575	rc = VINF_SUCCESS;
576	#else
577	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /idCpu/, VMMR0_DO_VMMR0_INIT, RT_MAKE_U64(VMMGetSvnRev(), vmmGetBuildType()), NULL);
578	#endif
579	/*
580	* Flush the logs.
581	*/
582	#ifdef LOG_ENABLED
583	if ( pVCpu->vmm.s.pR0LoggerR3
584	&& pVCpu->vmm.s.pR0LoggerR3->Logger.offScratch > 0)
585	RTLogFlushR0(NULL, &pVCpu->vmm.s.pR0LoggerR3->Logger);
586	#endif
587	if (rc != VINF_VMM_CALL_HOST)
588	break;
589	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
590	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
591	break;
592	/* Resume R0 */
593	}
594
595	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
596	{
597	LogRel(("VMM: R0 init failed, rc=%Rra\n", rc));
598	if (RT_SUCCESS(rc))
599	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
600	}
601
602	/* Log whether thread-context hooks are used (on Linux this can depend on how the kernel is configured). */
603	if (pVM->aCpus[0].vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
604	LogRel(("VMM: Enabled thread-context hooks\n"));
605	else
606	LogRel(("VMM: Thread-context hooks unavailable\n"));
607
608	/*
609	* Send all EMTs to ring-0 to get their logger initialized.
610	*/
611	for (VMCPUID idCpu = 0; RT_SUCCESS(rc) && idCpu < pVM->cCpus; idCpu++)
612	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)vmmR3InitR0Emt, 2, pVM, &pVM->aCpus[idCpu]);
613
614	return rc;
615	}
616
617
618	#ifdef VBOX_WITH_RAW_MODE
619	/**
620	* Initializes the RC VMM.
621	*
622	* @returns VBox status code.
623	* @param pVM The cross context VM structure.
624	*/
625	VMMR3_INT_DECL(int) VMMR3InitRC(PVM pVM)
626	{
627	PVMCPU pVCpu = VMMGetCpu(pVM);
628	Assert(pVCpu && pVCpu->idCpu == 0);
629
630	/* In VMX mode, there's no need to init RC. */
631	if (!VM_IS_RAW_MODE_ENABLED(pVM))
632	return VINF_SUCCESS;
633
634	AssertReturn(pVM->cCpus == 1, VERR_RAW_MODE_INVALID_SMP);
635
636	/*
637	* Call VMMRCInit():
638	* -# resolve the address.
639	* -# setup stackframe and EIP to use the trampoline.
640	* -# do a generic hypervisor call.
641	*/
642	RTRCPTR RCPtrEP;
643	int rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "VMMRCEntry", &RCPtrEP);
644	if (RT_SUCCESS(rc))
645	{
646	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
647	uint64_t u64TS = RTTimeProgramStartNanoTS();
648	CPUMPushHyper(pVCpu, RT_HI_U32(u64TS)); /* Param 4: The program startup TS - Hi. */
649	CPUMPushHyper(pVCpu, RT_LO_U32(u64TS)); /* Param 4: The program startup TS - Lo. */
650	CPUMPushHyper(pVCpu, vmmGetBuildType()); /* Param 3: Version argument. */
651	CPUMPushHyper(pVCpu, VMMGetSvnRev()); /* Param 2: Version argument. */
652	CPUMPushHyper(pVCpu, VMMRC_DO_VMMRC_INIT); /* Param 1: Operation. */
653	CPUMPushHyper(pVCpu, pVM->pVMRC); /* Param 0: pVM */
654	CPUMPushHyper(pVCpu, 6 * sizeof(RTRCPTR)); /* trampoline param: stacksize. */
655	CPUMPushHyper(pVCpu, RCPtrEP); /* Call EIP. */
656	CPUMSetHyperEIP(pVCpu, pVM->vmm.s.pfnCallTrampolineRC);
657	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
658
659	for (;;)
660	{
661	#ifdef NO_SUPCALLR0VMM
662	//rc = VERR_GENERAL_FAILURE;
663	rc = VINF_SUCCESS;
664	#else
665	rc = SUPR3CallVMMR0(pVM->pVMR0, 0 /* VCPU 0 */, VMMR0_DO_CALL_HYPERVISOR, NULL);
666	#endif
667	#ifdef LOG_ENABLED
668	PRTLOGGERRC pLogger = pVM->vmm.s.pRCLoggerR3;
669	if ( pLogger
670	&& pLogger->offScratch > 0)
671	RTLogFlushRC(NULL, pLogger);
672	#endif
673	#ifdef VBOX_WITH_RC_RELEASE_LOGGING
674	PRTLOGGERRC pRelLogger = pVM->vmm.s.pRCRelLoggerR3;
675	if (RT_UNLIKELY(pRelLogger && pRelLogger->offScratch > 0))
676	RTLogFlushRC(RTLogRelGetDefaultInstance(), pRelLogger);
677	#endif
678	if (rc != VINF_VMM_CALL_HOST)
679	break;
680	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
681	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
682	break;
683	}
684
685	/* Don't trigger assertions or guru if raw-mode is unavailable. */
686	if (rc != VERR_SUPDRV_NO_RAW_MODE_HYPER_V_ROOT)
687	{
688	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
689	{
690	VMMR3FatalDump(pVM, pVCpu, rc);
691	if (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST)
692	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
693	}
694	AssertRC(rc);
695	}
696	}
697	return rc;
698	}
699	#endif /* VBOX_WITH_RAW_MODE */
700
701
702	/**
703	* Called when an init phase completes.
704	*
705	* @returns VBox status code.
706	* @param pVM The cross context VM structure.
707	* @param enmWhat Which init phase.
708	*/
709	VMMR3_INT_DECL(int) VMMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
710	{
711	int rc = VINF_SUCCESS;
712
713	switch (enmWhat)
714	{
715	case VMINITCOMPLETED_RING3:
716	{
717	/*
718	* Set page attributes to r/w for stack pages.
719	*/
720	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
721	{
722	rc = PGMMapSetPage(pVM, pVM->aCpus[idCpu].vmm.s.pbEMTStackRC, VMM_STACK_SIZE,
723	X86_PTE_P \| X86_PTE_A \| X86_PTE_D \| X86_PTE_RW);
724	AssertRCReturn(rc, rc);
725	}
726
727	/*
728	* Create the EMT yield timer.
729	*/
730	rc = TMR3TimerCreateInternal(pVM, TMCLOCK_REAL, vmmR3YieldEMT, NULL, "EMT Yielder", &pVM->vmm.s.pYieldTimer);
731	AssertRCReturn(rc, rc);
732
733	rc = TMTimerSetMillies(pVM->vmm.s.pYieldTimer, pVM->vmm.s.cYieldEveryMillies);
734	AssertRCReturn(rc, rc);
735
736	#ifdef VBOX_WITH_NMI
737	/*
738	* Map the host APIC into GC - This is AMD/Intel + Host OS specific!
739	*/
740	rc = PGMMap(pVM, pVM->vmm.s.GCPtrApicBase, 0xfee00000, PAGE_SIZE,
741	X86_PTE_P \| X86_PTE_RW \| X86_PTE_PWT \| X86_PTE_PCD \| X86_PTE_A \| X86_PTE_D);
742	AssertRCReturn(rc, rc);
743	#endif
744
745	#ifdef VBOX_STRICT_VMM_STACK
746	/*
747	* Setup the stack guard pages: Two inaccessible pages at each sides of the
748	* stack to catch over/under-flows.
749	*/
750	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
751	{
752	uint8_t *pbEMTStackR3 = pVM->aCpus[idCpu].vmm.s.pbEMTStackR3;
753
754	memset(pbEMTStackR3 - PAGE_SIZE, 0xcc, PAGE_SIZE);
755	MMR3HyperSetGuard(pVM, pbEMTStackR3 - PAGE_SIZE, PAGE_SIZE, true /fSet/);
756
757	memset(pbEMTStackR3 + VMM_STACK_SIZE, 0xcc, PAGE_SIZE);
758	MMR3HyperSetGuard(pVM, pbEMTStackR3 + VMM_STACK_SIZE, PAGE_SIZE, true /fSet/);
759	}
760	pVM->vmm.s.fStackGuardsStationed = true;
761	#endif
762	break;
763	}
764
765	case VMINITCOMPLETED_HM:
766	{
767	/*
768	* Disable the periodic preemption timers if we can use the
769	* VMX-preemption timer instead.
770	*/
771	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
772	&& HMR3IsVmxPreemptionTimerUsed(pVM))
773	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
774	LogRel(("VMM: fUsePeriodicPreemptionTimers=%RTbool\n", pVM->vmm.s.fUsePeriodicPreemptionTimers));
775
776	/*
777	* Last chance for GIM to update its CPUID leaves if it requires
778	* knowledge/information from HM initialization.
779	*/
780	rc = GIMR3InitCompleted(pVM);
781	AssertRCReturn(rc, rc);
782
783	/*
784	* CPUM's post-initialization (print CPUIDs).
785	*/
786	CPUMR3LogCpuIds(pVM);
787	break;
788	}
789
790	default: /* shuts up gcc */
791	break;
792	}
793
794	return rc;
795	}
796
797
798	/**
799	* Terminate the VMM bits.
800	*
801	* @returns VBox status code.
802	* @param pVM The cross context VM structure.
803	*/
804	VMMR3_INT_DECL(int) VMMR3Term(PVM pVM)
805	{
806	PVMCPU pVCpu = VMMGetCpu(pVM);
807	Assert(pVCpu && pVCpu->idCpu == 0);
808
809	/*
810	* Call Ring-0 entry with termination code.
811	*/
812	int rc;
813	for (;;)
814	{
815	#ifdef NO_SUPCALLR0VMM
816	//rc = VERR_GENERAL_FAILURE;
817	rc = VINF_SUCCESS;
818	#else
819	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /idCpu/, VMMR0_DO_VMMR0_TERM, 0, NULL);
820	#endif
821	/*
822	* Flush the logs.
823	*/
824	#ifdef LOG_ENABLED
825	if ( pVCpu->vmm.s.pR0LoggerR3
826	&& pVCpu->vmm.s.pR0LoggerR3->Logger.offScratch > 0)
827	RTLogFlushR0(NULL, &pVCpu->vmm.s.pR0LoggerR3->Logger);
828	#endif
829	if (rc != VINF_VMM_CALL_HOST)
830	break;
831	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
832	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
833	break;
834	/* Resume R0 */
835	}
836	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
837	{
838	LogRel(("VMM: VMMR3Term: R0 term failed, rc=%Rra. (warning)\n", rc));
839	if (RT_SUCCESS(rc))
840	rc = VERR_IPE_UNEXPECTED_INFO_STATUS;
841	}
842
843	for (VMCPUID i = 0; i < pVM->cCpus; i++)
844	{
845	RTSemEventDestroy(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
846	pVM->vmm.s.pahEvtRendezvousEnterOrdered[i] = NIL_RTSEMEVENT;
847	}
848	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
849	pVM->vmm.s.hEvtRendezvousEnterOneByOne = NIL_RTSEMEVENT;
850	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
851	pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce = NIL_RTSEMEVENTMULTI;
852	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousDone);
853	pVM->vmm.s.hEvtMulRendezvousDone = NIL_RTSEMEVENTMULTI;
854	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousDoneCaller);
855	pVM->vmm.s.hEvtRendezvousDoneCaller = NIL_RTSEMEVENT;
856	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
857	pVM->vmm.s.hEvtMulRendezvousRecursionPush = NIL_RTSEMEVENTMULTI;
858	RTSemEventMultiDestroy(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
859	pVM->vmm.s.hEvtMulRendezvousRecursionPop = NIL_RTSEMEVENTMULTI;
860	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
861	pVM->vmm.s.hEvtRendezvousRecursionPushCaller = NIL_RTSEMEVENT;
862	RTSemEventDestroy(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
863	pVM->vmm.s.hEvtRendezvousRecursionPopCaller = NIL_RTSEMEVENT;
864
865	#ifdef VBOX_STRICT_VMM_STACK
866	/*
867	* Make the two stack guard pages present again.
868	*/
869	if (pVM->vmm.s.fStackGuardsStationed)
870	{
871	for (VMCPUID i = 0; i < pVM->cCpus; i++)
872	{
873	uint8_t *pbEMTStackR3 = pVM->aCpus[i].vmm.s.pbEMTStackR3;
874	MMR3HyperSetGuard(pVM, pbEMTStackR3 - PAGE_SIZE, PAGE_SIZE, false /fSet/);
875	MMR3HyperSetGuard(pVM, pbEMTStackR3 + VMM_STACK_SIZE, PAGE_SIZE, false /fSet/);
876	}
877	pVM->vmm.s.fStackGuardsStationed = false;
878	}
879	#endif
880
881	vmmTermFormatTypes();
882	return rc;
883	}
884
885
886	/**
887	* Applies relocations to data and code managed by this
888	* component. This function will be called at init and
889	* whenever the VMM need to relocate it self inside the GC.
890	*
891	* The VMM will need to apply relocations to the core code.
892	*
893	* @param pVM The cross context VM structure.
894	* @param offDelta The relocation delta.
895	*/
896	VMMR3_INT_DECL(void) VMMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
897	{
898	LogFlow(("VMMR3Relocate: offDelta=%RGv\n", offDelta));
899
900	/*
901	* Recalc the RC address.
902	*/
903	#ifdef VBOX_WITH_RAW_MODE
904	pVM->vmm.s.pvCoreCodeRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pvCoreCodeR3);
905	#endif
906
907	/*
908	* The stack.
909	*/
910	for (VMCPUID i = 0; i < pVM->cCpus; i++)
911	{
912	PVMCPU pVCpu = &pVM->aCpus[i];
913
914	CPUMSetHyperESP(pVCpu, CPUMGetHyperESP(pVCpu) + offDelta);
915
916	pVCpu->vmm.s.pbEMTStackRC = MMHyperR3ToRC(pVM, pVCpu->vmm.s.pbEMTStackR3);
917	pVCpu->vmm.s.pbEMTStackBottomRC = pVCpu->vmm.s.pbEMTStackRC + VMM_STACK_SIZE;
918	}
919
920	/*
921	* All the switchers.
922	*/
923	vmmR3SwitcherRelocate(pVM, offDelta);
924
925	/*
926	* Get other RC entry points.
927	*/
928	if (VM_IS_RAW_MODE_ENABLED(pVM))
929	{
930	int rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "CPUMGCResumeGuest", &pVM->vmm.s.pfnCPUMRCResumeGuest);
931	AssertReleaseMsgRC(rc, ("CPUMGCResumeGuest not found! rc=%Rra\n", rc));
932
933	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "CPUMGCResumeGuestV86", &pVM->vmm.s.pfnCPUMRCResumeGuestV86);
934	AssertReleaseMsgRC(rc, ("CPUMGCResumeGuestV86 not found! rc=%Rra\n", rc));
935	}
936
937	/*
938	* Update the logger.
939	*/
940	VMMR3UpdateLoggers(pVM);
941	}
942
943
944	/**
945	* Updates the settings for the RC and R0 loggers.
946	*
947	* @returns VBox status code.
948	* @param pVM The cross context VM structure.
949	*/
950	VMMR3_INT_DECL(int) VMMR3UpdateLoggers(PVM pVM)
951	{
952	/*
953	* Simply clone the logger instance (for RC).
954	*/
955	int rc = VINF_SUCCESS;
956	RTRCPTR RCPtrLoggerFlush = 0;
957
958	if ( pVM->vmm.s.pRCLoggerR3
959	#ifdef VBOX_WITH_RC_RELEASE_LOGGING
960	\|\| pVM->vmm.s.pRCRelLoggerR3
961	#endif
962	)
963	{
964	Assert(VM_IS_RAW_MODE_ENABLED(pVM));
965	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "vmmGCLoggerFlush", &RCPtrLoggerFlush);
966	AssertReleaseMsgRC(rc, ("vmmGCLoggerFlush not found! rc=%Rra\n", rc));
967	}
968
969	if (pVM->vmm.s.pRCLoggerR3)
970	{
971	Assert(VM_IS_RAW_MODE_ENABLED(pVM));
972	RTRCPTR RCPtrLoggerWrapper = 0;
973	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "vmmGCLoggerWrapper", &RCPtrLoggerWrapper);
974	AssertReleaseMsgRC(rc, ("vmmGCLoggerWrapper not found! rc=%Rra\n", rc));
975
976	pVM->vmm.s.pRCLoggerRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pRCLoggerR3);
977	rc = RTLogCloneRC(NULL /* default */, pVM->vmm.s.pRCLoggerR3, pVM->vmm.s.cbRCLogger,
978	RCPtrLoggerWrapper, RCPtrLoggerFlush, RTLOGFLAGS_BUFFERED);
979	AssertReleaseMsgRC(rc, ("RTLogCloneRC failed! rc=%Rra\n", rc));
980	}
981
982	#ifdef VBOX_WITH_RC_RELEASE_LOGGING
983	if (pVM->vmm.s.pRCRelLoggerR3)
984	{
985	Assert(VM_IS_RAW_MODE_ENABLED(pVM));
986	RTRCPTR RCPtrLoggerWrapper = 0;
987	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "vmmGCRelLoggerWrapper", &RCPtrLoggerWrapper);
988	AssertReleaseMsgRC(rc, ("vmmGCRelLoggerWrapper not found! rc=%Rra\n", rc));
989
990	pVM->vmm.s.pRCRelLoggerRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pRCRelLoggerR3);
991	rc = RTLogCloneRC(RTLogRelGetDefaultInstance(), pVM->vmm.s.pRCRelLoggerR3, pVM->vmm.s.cbRCRelLogger,
992	RCPtrLoggerWrapper, RCPtrLoggerFlush, RTLOGFLAGS_BUFFERED);
993	AssertReleaseMsgRC(rc, ("RTLogCloneRC failed! rc=%Rra\n", rc));
994	}
995	#endif /* VBOX_WITH_RC_RELEASE_LOGGING */
996
997	#ifdef LOG_ENABLED
998	/*
999	* For the ring-0 EMT logger, we use a per-thread logger instance
1000	* in ring-0. Only initialize it once.
1001	*/
1002	PRTLOGGER const pDefault = RTLogDefaultInstance();
1003	for (VMCPUID i = 0; i < pVM->cCpus; i++)
1004	{
1005	PVMCPU pVCpu = &pVM->aCpus[i];
1006	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
1007	if (pR0LoggerR3)
1008	{
1009	if (!pR0LoggerR3->fCreated)
1010	{
1011	RTR0PTR pfnLoggerWrapper = NIL_RTR0PTR;
1012	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerWrapper", &pfnLoggerWrapper);
1013	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerWrapper not found! rc=%Rra\n", rc), rc);
1014
1015	RTR0PTR pfnLoggerFlush = NIL_RTR0PTR;
1016	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerFlush", &pfnLoggerFlush);
1017	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerFlush not found! rc=%Rra\n", rc), rc);
1018
1019	rc = RTLogCreateForR0(&pR0LoggerR3->Logger, pR0LoggerR3->cbLogger,
1020	pVCpu->vmm.s.pR0LoggerR0 + RT_OFFSETOF(VMMR0LOGGER, Logger),
1021	pfnLoggerWrapper, pfnLoggerFlush,
1022	RTLOGFLAGS_BUFFERED, RTLOGDEST_DUMMY);
1023	AssertReleaseMsgRCReturn(rc, ("RTLogCreateForR0 failed! rc=%Rra\n", rc), rc);
1024
1025	RTR0PTR pfnLoggerPrefix = NIL_RTR0PTR;
1026	rc = PDMR3LdrGetSymbolR0(pVM, VMMR0_MAIN_MODULE_NAME, "vmmR0LoggerPrefix", &pfnLoggerPrefix);
1027	AssertReleaseMsgRCReturn(rc, ("vmmR0LoggerPrefix not found! rc=%Rra\n", rc), rc);
1028	rc = RTLogSetCustomPrefixCallbackForR0(&pR0LoggerR3->Logger,
1029	pVCpu->vmm.s.pR0LoggerR0 + RT_OFFSETOF(VMMR0LOGGER, Logger),
1030	pfnLoggerPrefix, NIL_RTR0PTR);
1031	AssertReleaseMsgRCReturn(rc, ("RTLogSetCustomPrefixCallback failed! rc=%Rra\n", rc), rc);
1032
1033	pR0LoggerR3->idCpu = i;
1034	pR0LoggerR3->fCreated = true;
1035	pR0LoggerR3->fFlushingDisabled = false;
1036
1037	}
1038
1039	rc = RTLogCopyGroupsAndFlagsForR0(&pR0LoggerR3->Logger, pVCpu->vmm.s.pR0LoggerR0 + RT_OFFSETOF(VMMR0LOGGER, Logger),
1040	pDefault, RTLOGFLAGS_BUFFERED, UINT32_MAX);
1041	AssertRC(rc);
1042	}
1043	}
1044	#endif
1045	return rc;
1046	}
1047
1048
1049	/**
1050	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg1Weak output.
1051	*
1052	* @returns Pointer to the buffer.
1053	* @param pVM The cross context VM structure.
1054	*/
1055	VMMR3DECL(const char *) VMMR3GetRZAssertMsg1(PVM pVM)
1056	{
1057	if (!VM_IS_RAW_MODE_ENABLED(pVM))
1058	return pVM->vmm.s.szRing0AssertMsg1;
1059
1060	RTRCPTR RCPtr;
1061	int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_szRTAssertMsg1", &RCPtr);
1062	if (RT_SUCCESS(rc))
1063	return (const char *)MMHyperRCToR3(pVM, RCPtr);
1064
1065	return NULL;
1066	}
1067
1068
1069	/**
1070	* Returns the VMCPU of the specified virtual CPU.
1071	*
1072	* @returns The VMCPU pointer. NULL if @a idCpu or @a pUVM is invalid.
1073	*
1074	* @param pUVM The user mode VM handle.
1075	* @param idCpu The ID of the virtual CPU.
1076	*/
1077	VMMR3DECL(PVMCPU) VMMR3GetCpuByIdU(PUVM pUVM, RTCPUID idCpu)
1078	{
1079	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
1080	AssertReturn(idCpu < pUVM->cCpus, NULL);
1081	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, NULL);
1082	return &pUVM->pVM->aCpus[idCpu];
1083	}
1084
1085
1086	/**
1087	* Gets the pointer to a buffer containing the R0/RC RTAssertMsg2Weak output.
1088	*
1089	* @returns Pointer to the buffer.
1090	* @param pVM The cross context VM structure.
1091	*/
1092	VMMR3DECL(const char *) VMMR3GetRZAssertMsg2(PVM pVM)
1093	{
1094	if (!VM_IS_RAW_MODE_ENABLED(pVM))
1095	return pVM->vmm.s.szRing0AssertMsg2;
1096
1097	RTRCPTR RCPtr;
1098	int rc = PDMR3LdrGetSymbolRC(pVM, NULL, "g_szRTAssertMsg2", &RCPtr);
1099	if (RT_SUCCESS(rc))
1100	return (const char *)MMHyperRCToR3(pVM, RCPtr);
1101
1102	return NULL;
1103	}
1104
1105
1106	/**
1107	* Execute state save operation.
1108	*
1109	* @returns VBox status code.
1110	* @param pVM The cross context VM structure.
1111	* @param pSSM SSM operation handle.
1112	*/
1113	static DECLCALLBACK(int) vmmR3Save(PVM pVM, PSSMHANDLE pSSM)
1114	{
1115	LogFlow(("vmmR3Save:\n"));
1116
1117	/*
1118	* Save the started/stopped state of all CPUs except 0 as it will always
1119	* be running. This avoids breaking the saved state version. :-)
1120	*/
1121	for (VMCPUID i = 1; i < pVM->cCpus; i++)
1122	SSMR3PutBool(pSSM, VMCPUSTATE_IS_STARTED(VMCPU_GET_STATE(&pVM->aCpus[i])));
1123
1124	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
1125	}
1126
1127
1128	/**
1129	* Execute state load operation.
1130	*
1131	* @returns VBox status code.
1132	* @param pVM The cross context VM structure.
1133	* @param pSSM SSM operation handle.
1134	* @param uVersion Data layout version.
1135	* @param uPass The data pass.
1136	*/
1137	static DECLCALLBACK(int) vmmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1138	{
1139	LogFlow(("vmmR3Load:\n"));
1140	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
1141
1142	/*
1143	* Validate version.
1144	*/
1145	if ( uVersion != VMM_SAVED_STATE_VERSION
1146	&& uVersion != VMM_SAVED_STATE_VERSION_3_0)
1147	{
1148	AssertMsgFailed(("vmmR3Load: Invalid version uVersion=%u!\n", uVersion));
1149	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1150	}
1151
1152	if (uVersion <= VMM_SAVED_STATE_VERSION_3_0)
1153	{
1154	/* Ignore the stack bottom, stack pointer and stack bits. */
1155	RTRCPTR RCPtrIgnored;
1156	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
1157	SSMR3GetRCPtr(pSSM, &RCPtrIgnored);
1158	#ifdef RT_OS_DARWIN
1159	if ( SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(3,0,0)
1160	&& SSMR3HandleVersion(pSSM) < VBOX_FULL_VERSION_MAKE(3,1,0)
1161	&& SSMR3HandleRevision(pSSM) >= 48858
1162	&& ( !strcmp(SSMR3HandleHostOSAndArch(pSSM), "darwin.x86")
1163	\|\| !strcmp(SSMR3HandleHostOSAndArch(pSSM), "") )
1164	)
1165	SSMR3Skip(pSSM, 16384);
1166	else
1167	SSMR3Skip(pSSM, 8192);
1168	#else
1169	SSMR3Skip(pSSM, 8192);
1170	#endif
1171	}
1172
1173	/*
1174	* Restore the VMCPU states. VCPU 0 is always started.
1175	*/
1176	VMCPU_SET_STATE(&pVM->aCpus[0], VMCPUSTATE_STARTED);
1177	for (VMCPUID i = 1; i < pVM->cCpus; i++)
1178	{
1179	bool fStarted;
1180	int rc = SSMR3GetBool(pSSM, &fStarted);
1181	if (RT_FAILURE(rc))
1182	return rc;
1183	VMCPU_SET_STATE(&pVM->aCpus[i], fStarted ? VMCPUSTATE_STARTED : VMCPUSTATE_STOPPED);
1184	}
1185
1186	/* terminator */
1187	uint32_t u32;
1188	int rc = SSMR3GetU32(pSSM, &u32);
1189	if (RT_FAILURE(rc))
1190	return rc;
1191	if (u32 != UINT32_MAX)
1192	{
1193	AssertMsgFailed(("u32=%#x\n", u32));
1194	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1195	}
1196	return VINF_SUCCESS;
1197	}
1198
1199
1200	#ifdef VBOX_WITH_RAW_MODE
1201	/**
1202	* Resolve a builtin RC symbol.
1203	*
1204	* Called by PDM when loading or relocating RC modules.
1205	*
1206	* @returns VBox status
1207	* @param pVM The cross context VM structure.
1208	* @param pszSymbol Symbol to resolve.
1209	* @param pRCPtrValue Where to store the symbol value.
1210	*
1211	* @remark This has to work before VMMR3Relocate() is called.
1212	*/
1213	VMMR3_INT_DECL(int) VMMR3GetImportRC(PVM pVM, const char *pszSymbol, PRTRCPTR pRCPtrValue)
1214	{
1215	if (!strcmp(pszSymbol, "g_Logger"))
1216	{
1217	if (pVM->vmm.s.pRCLoggerR3)
1218	pVM->vmm.s.pRCLoggerRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pRCLoggerR3);
1219	*pRCPtrValue = pVM->vmm.s.pRCLoggerRC;
1220	}
1221	else if (!strcmp(pszSymbol, "g_RelLogger"))
1222	{
1223	# ifdef VBOX_WITH_RC_RELEASE_LOGGING
1224	if (pVM->vmm.s.pRCRelLoggerR3)
1225	pVM->vmm.s.pRCRelLoggerRC = MMHyperR3ToRC(pVM, pVM->vmm.s.pRCRelLoggerR3);
1226	*pRCPtrValue = pVM->vmm.s.pRCRelLoggerRC;
1227	# else
1228	*pRCPtrValue = NIL_RTRCPTR;
1229	# endif
1230	}
1231	else
1232	return VERR_SYMBOL_NOT_FOUND;
1233	return VINF_SUCCESS;
1234	}
1235	#endif /* VBOX_WITH_RAW_MODE */
1236
1237
1238	/**
1239	* Suspends the CPU yielder.
1240	*
1241	* @param pVM The cross context VM structure.
1242	*/
1243	VMMR3_INT_DECL(void) VMMR3YieldSuspend(PVM pVM)
1244	{
1245	VMCPU_ASSERT_EMT(&pVM->aCpus[0]);
1246	if (!pVM->vmm.s.cYieldResumeMillies)
1247	{
1248	uint64_t u64Now = TMTimerGet(pVM->vmm.s.pYieldTimer);
1249	uint64_t u64Expire = TMTimerGetExpire(pVM->vmm.s.pYieldTimer);
1250	if (u64Now >= u64Expire \|\| u64Expire == ~(uint64_t)0)
1251	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1252	else
1253	pVM->vmm.s.cYieldResumeMillies = TMTimerToMilli(pVM->vmm.s.pYieldTimer, u64Expire - u64Now);
1254	TMTimerStop(pVM->vmm.s.pYieldTimer);
1255	}
1256	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1257	}
1258
1259
1260	/**
1261	* Stops the CPU yielder.
1262	*
1263	* @param pVM The cross context VM structure.
1264	*/
1265	VMMR3_INT_DECL(void) VMMR3YieldStop(PVM pVM)
1266	{
1267	if (!pVM->vmm.s.cYieldResumeMillies)
1268	TMTimerStop(pVM->vmm.s.pYieldTimer);
1269	pVM->vmm.s.cYieldResumeMillies = pVM->vmm.s.cYieldEveryMillies;
1270	pVM->vmm.s.u64LastYield = RTTimeNanoTS();
1271	}
1272
1273
1274	/**
1275	* Resumes the CPU yielder when it has been a suspended or stopped.
1276	*
1277	* @param pVM The cross context VM structure.
1278	*/
1279	VMMR3_INT_DECL(void) VMMR3YieldResume(PVM pVM)
1280	{
1281	if (pVM->vmm.s.cYieldResumeMillies)
1282	{
1283	TMTimerSetMillies(pVM->vmm.s.pYieldTimer, pVM->vmm.s.cYieldResumeMillies);
1284	pVM->vmm.s.cYieldResumeMillies = 0;
1285	}
1286	}
1287
1288
1289	/**
1290	* Internal timer callback function.
1291	*
1292	* @param pVM The cross context VM structure.
1293	* @param pTimer The timer handle.
1294	* @param pvUser User argument specified upon timer creation.
1295	*/
1296	static DECLCALLBACK(void) vmmR3YieldEMT(PVM pVM, PTMTIMER pTimer, void *pvUser)
1297	{
1298	NOREF(pvUser);
1299
1300	/*
1301	* This really needs some careful tuning. While we shouldn't be too greedy since
1302	* that'll cause the rest of the system to stop up, we shouldn't be too nice either
1303	* because that'll cause us to stop up.
1304	*
1305	* The current logic is to use the default interval when there is no lag worth
1306	* mentioning, but when we start accumulating lag we don't bother yielding at all.
1307	*
1308	* (This depends on the TMCLOCK_VIRTUAL_SYNC to be scheduled before TMCLOCK_REAL
1309	* so the lag is up to date.)
1310	*/
1311	const uint64_t u64Lag = TMVirtualSyncGetLag(pVM);
1312	if ( u64Lag < 50000000 /* 50ms */
1313	\|\| ( u64Lag < 1000000000 /* 1s */
1314	&& RTTimeNanoTS() - pVM->vmm.s.u64LastYield < 500000000 /* 500 ms */)
1315	)
1316	{
1317	uint64_t u64Elapsed = RTTimeNanoTS();
1318	pVM->vmm.s.u64LastYield = u64Elapsed;
1319
1320	RTThreadYield();
1321
1322	#ifdef LOG_ENABLED
1323	u64Elapsed = RTTimeNanoTS() - u64Elapsed;
1324	Log(("vmmR3YieldEMT: %RI64 ns\n", u64Elapsed));
1325	#endif
1326	}
1327	TMTimerSetMillies(pTimer, pVM->vmm.s.cYieldEveryMillies);
1328	}
1329
1330
1331	#ifdef VBOX_WITH_RAW_MODE
1332	/**
1333	* Executes guest code in the raw-mode context.
1334	*
1335	* @param pVM The cross context VM structure.
1336	* @param pVCpu The cross context virtual CPU structure.
1337	*/
1338	VMMR3_INT_DECL(int) VMMR3RawRunGC(PVM pVM, PVMCPU pVCpu)
1339	{
1340	Log2(("VMMR3RawRunGC: (cs:eip=%04x:%08x)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestEIP(pVCpu)));
1341
1342	AssertReturn(pVM->cCpus == 1, VERR_RAW_MODE_INVALID_SMP);
1343
1344	/*
1345	* Set the hypervisor to resume executing a CPUM resume function
1346	* in CPUMRCA.asm.
1347	*/
1348	CPUMSetHyperState(pVCpu,
1349	CPUMGetGuestEFlags(pVCpu) & X86_EFL_VM
1350	? pVM->vmm.s.pfnCPUMRCResumeGuestV86
1351	: pVM->vmm.s.pfnCPUMRCResumeGuest, /* eip */
1352	pVCpu->vmm.s.pbEMTStackBottomRC, /* esp */
1353	0, /* eax */
1354	VM_RC_ADDR(pVM, &pVCpu->cpum) /* edx */);
1355
1356	/*
1357	* We hide log flushes (outer) and hypervisor interrupts (inner).
1358	*/
1359	for (;;)
1360	{
1361	#ifdef VBOX_STRICT
1362	if (RT_UNLIKELY(!CPUMGetHyperCR3(pVCpu) \|\| CPUMGetHyperCR3(pVCpu) != PGMGetHyperCR3(pVCpu)))
1363	EMR3FatalError(pVCpu, VERR_VMM_HYPER_CR3_MISMATCH);
1364	PGMMapCheck(pVM);
1365	# ifdef VBOX_WITH_SAFE_STR
1366	SELMR3CheckShadowTR(pVM);
1367	# endif
1368	#endif
1369	int rc;
1370	do
1371	{
1372	#ifdef NO_SUPCALLR0VMM
1373	rc = VERR_GENERAL_FAILURE;
1374	#else
1375	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
1376	if (RT_LIKELY(rc == VINF_SUCCESS))
1377	rc = pVCpu->vmm.s.iLastGZRc;
1378	#endif
1379	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
1380
1381	/*
1382	* Flush the logs.
1383	*/
1384	#ifdef LOG_ENABLED
1385	PRTLOGGERRC pLogger = pVM->vmm.s.pRCLoggerR3;
1386	if ( pLogger
1387	&& pLogger->offScratch > 0)
1388	RTLogFlushRC(NULL, pLogger);
1389	#endif
1390	#ifdef VBOX_WITH_RC_RELEASE_LOGGING
1391	PRTLOGGERRC pRelLogger = pVM->vmm.s.pRCRelLoggerR3;
1392	if (RT_UNLIKELY(pRelLogger && pRelLogger->offScratch > 0))
1393	RTLogFlushRC(RTLogRelGetDefaultInstance(), pRelLogger);
1394	#endif
1395	if (rc != VINF_VMM_CALL_HOST)
1396	{
1397	Log2(("VMMR3RawRunGC: returns %Rrc (cs:eip=%04x:%08x)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestEIP(pVCpu)));
1398	return rc;
1399	}
1400	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1401	if (RT_FAILURE(rc))
1402	return rc;
1403	/* Resume GC */
1404	}
1405	}
1406	#endif /* VBOX_WITH_RAW_MODE */
1407
1408
1409	/**
1410	* Executes guest code (Intel VT-x and AMD-V).
1411	*
1412	* @param pVM The cross context VM structure.
1413	* @param pVCpu The cross context virtual CPU structure.
1414	*/
1415	VMMR3_INT_DECL(int) VMMR3HmRunGC(PVM pVM, PVMCPU pVCpu)
1416	{
1417	Log2(("VMMR3HmRunGC: (cs:rip=%04x:%RX64)\n", CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1418
1419	for (;;)
1420	{
1421	int rc;
1422	do
1423	{
1424	#ifdef NO_SUPCALLR0VMM
1425	rc = VERR_GENERAL_FAILURE;
1426	#else
1427	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HM_RUN, pVCpu->idCpu);
1428	if (RT_LIKELY(rc == VINF_SUCCESS))
1429	rc = pVCpu->vmm.s.iLastGZRc;
1430	#endif
1431	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
1432
1433	#if 0 /** @todo triggers too often */
1434	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_TO_R3));
1435	#endif
1436
1437	#ifdef LOG_ENABLED
1438	/*
1439	* Flush the log
1440	*/
1441	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
1442	if ( pR0LoggerR3
1443	&& pR0LoggerR3->Logger.offScratch > 0)
1444	RTLogFlushR0(NULL, &pR0LoggerR3->Logger);
1445	#endif /* !LOG_ENABLED */
1446	if (rc != VINF_VMM_CALL_HOST)
1447	{
1448	Log2(("VMMR3HmRunGC: returns %Rrc (cs:rip=%04x:%RX64)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestRIP(pVCpu)));
1449	return rc;
1450	}
1451	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1452	if (RT_FAILURE(rc))
1453	return rc;
1454	/* Resume R0 */
1455	}
1456	}
1457
1458
1459	/**
1460	* Perform one of the fast I/O control VMMR0 operation.
1461	*
1462	* @returns VBox strict status code.
1463	* @param pVM The cross context VM structure.
1464	* @param pVCpu The cross context virtual CPU structure.
1465	* @param enmOperation The operation to perform.
1466	*/
1467	VMMR3_INT_DECL(VBOXSTRICTRC) VMMR3CallR0EmtFast(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation)
1468	{
1469	for (;;)
1470	{
1471	VBOXSTRICTRC rcStrict;
1472	do
1473	{
1474	#ifdef NO_SUPCALLR0VMM
1475	rcStrict = VERR_GENERAL_FAILURE;
1476	#else
1477	rcStrict = SUPR3CallVMMR0Fast(pVM->pVMR0, enmOperation, pVCpu->idCpu);
1478	if (RT_LIKELY(rcStrict == VINF_SUCCESS))
1479	rcStrict = pVCpu->vmm.s.iLastGZRc;
1480	#endif
1481	} while (rcStrict == VINF_EM_RAW_INTERRUPT_HYPER);
1482
1483	#ifdef LOG_ENABLED
1484	/*
1485	* Flush the log
1486	*/
1487	PVMMR0LOGGER pR0LoggerR3 = pVCpu->vmm.s.pR0LoggerR3;
1488	if ( pR0LoggerR3
1489	&& pR0LoggerR3->Logger.offScratch > 0)
1490	RTLogFlushR0(NULL, &pR0LoggerR3->Logger);
1491	#endif /* !LOG_ENABLED */
1492	if (rcStrict != VINF_VMM_CALL_HOST)
1493	return rcStrict;
1494	int rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
1495	if (RT_FAILURE(rc))
1496	return rc;
1497	/* Resume R0 */
1498	}
1499	}
1500
1501
1502	/**
1503	* VCPU worker for VMMSendStartupIpi.
1504	*
1505	* @param pVM The cross context VM structure.
1506	* @param idCpu Virtual CPU to perform SIPI on.
1507	* @param uVector The SIPI vector.
1508	*/
1509	static DECLCALLBACK(int) vmmR3SendStarupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1510	{
1511	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1512	VMCPU_ASSERT_EMT(pVCpu);
1513
1514	/*
1515	* Active, halt and shutdown states of the processor all block SIPIs.
1516	* So we can safely discard the SIPI. See Intel spec. 26.6.2 "Activity State".
1517	*/
1518	if (EMGetState(pVCpu) != EMSTATE_WAIT_SIPI)
1519	return VERR_ACCESS_DENIED;
1520
1521
1522	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1523
1524	pCtx->cs.Sel = uVector << 8;
1525	pCtx->cs.ValidSel = uVector << 8;
1526	pCtx->cs.fFlags = CPUMSELREG_FLAGS_VALID;
1527	pCtx->cs.u64Base = uVector << 12;
1528	pCtx->cs.u32Limit = UINT32_C(0x0000ffff);
1529	pCtx->rip = 0;
1530
1531	Log(("vmmR3SendSipi for VCPU %d with vector %x\n", idCpu, uVector));
1532
1533	# if 1 /* If we keep the EMSTATE_WAIT_SIPI method, then move this to EM.cpp. */
1534	EMSetState(pVCpu, EMSTATE_HALTED);
1535	return VINF_EM_RESCHEDULE;
1536	# else /* And if we go the VMCPU::enmState way it can stay here. */
1537	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STOPPED);
1538	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1539	return VINF_SUCCESS;
1540	# endif
1541	}
1542
1543
1544	static DECLCALLBACK(int) vmmR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1545	{
1546	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
1547	VMCPU_ASSERT_EMT(pVCpu);
1548
1549	Log(("vmmR3SendInitIpi for VCPU %d\n", idCpu));
1550
1551	/** @todo Figure out how to handle a nested-guest intercepts here for INIT
1552	* IPI (e.g. SVM_EXIT_INIT). */
1553
1554	PGMR3ResetCpu(pVM, pVCpu);
1555	PDMR3ResetCpu(pVCpu); /* Only clears pending interrupts force flags */
1556	APICR3InitIpi(pVCpu);
1557	TRPMR3ResetCpu(pVCpu);
1558	CPUMR3ResetCpu(pVM, pVCpu);
1559	EMR3ResetCpu(pVCpu);
1560	HMR3ResetCpu(pVCpu);
1561	NEMR3ResetCpu(pVCpu, true /fInitIpi/);
1562
1563	/* This will trickle up on the target EMT. */
1564	return VINF_EM_WAIT_SIPI;
1565	}
1566
1567
1568	/**
1569	* Sends a Startup IPI to the virtual CPU by setting CS:EIP into
1570	* vector-dependent state and unhalting processor.
1571	*
1572	* @param pVM The cross context VM structure.
1573	* @param idCpu Virtual CPU to perform SIPI on.
1574	* @param uVector SIPI vector.
1575	*/
1576	VMMR3_INT_DECL(void) VMMR3SendStartupIpi(PVM pVM, VMCPUID idCpu, uint32_t uVector)
1577	{
1578	AssertReturnVoid(idCpu < pVM->cCpus);
1579
1580	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendStarupIpi, 3, pVM, idCpu, uVector);
1581	AssertRC(rc);
1582	}
1583
1584
1585	/**
1586	* Sends init IPI to the virtual CPU.
1587	*
1588	* @param pVM The cross context VM structure.
1589	* @param idCpu Virtual CPU to perform int IPI on.
1590	*/
1591	VMMR3_INT_DECL(void) VMMR3SendInitIpi(PVM pVM, VMCPUID idCpu)
1592	{
1593	AssertReturnVoid(idCpu < pVM->cCpus);
1594
1595	int rc = VMR3ReqCallNoWait(pVM, idCpu, (PFNRT)vmmR3SendInitIpi, 2, pVM, idCpu);
1596	AssertRC(rc);
1597	}
1598
1599
1600	/**
1601	* Registers the guest memory range that can be used for patching.
1602	*
1603	* @returns VBox status code.
1604	* @param pVM The cross context VM structure.
1605	* @param pPatchMem Patch memory range.
1606	* @param cbPatchMem Size of the memory range.
1607	*/
1608	VMMR3DECL(int) VMMR3RegisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1609	{
1610	VM_ASSERT_EMT(pVM);
1611	if (HMIsEnabled(pVM))
1612	return HMR3EnablePatching(pVM, pPatchMem, cbPatchMem);
1613
1614	return VERR_NOT_SUPPORTED;
1615	}
1616
1617
1618	/**
1619	* Deregisters the guest memory range that can be used for patching.
1620	*
1621	* @returns VBox status code.
1622	* @param pVM The cross context VM structure.
1623	* @param pPatchMem Patch memory range.
1624	* @param cbPatchMem Size of the memory range.
1625	*/
1626	VMMR3DECL(int) VMMR3DeregisterPatchMemory(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem)
1627	{
1628	if (HMIsEnabled(pVM))
1629	return HMR3DisablePatching(pVM, pPatchMem, cbPatchMem);
1630
1631	return VINF_SUCCESS;
1632	}
1633
1634
1635	/**
1636	* Common recursion handler for the other EMTs.
1637	*
1638	* @returns Strict VBox status code.
1639	* @param pVM The cross context VM structure.
1640	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1641	* @param rcStrict Current status code to be combined with the one
1642	* from this recursion and returned.
1643	*/
1644	static VBOXSTRICTRC vmmR3EmtRendezvousCommonRecursion(PVM pVM, PVMCPU pVCpu, VBOXSTRICTRC rcStrict)
1645	{
1646	int rc2;
1647
1648	/*
1649	* We wait here while the initiator of this recursion reconfigures
1650	* everything. The last EMT to get in signals the initiator.
1651	*/
1652	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) == pVM->cCpus)
1653	{
1654	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
1655	AssertLogRelRC(rc2);
1656	}
1657
1658	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPush, RT_INDEFINITE_WAIT);
1659	AssertLogRelRC(rc2);
1660
1661	/*
1662	* Do the normal rendezvous processing.
1663	*/
1664	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1665	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1666
1667	/*
1668	* Wait for the initiator to restore everything.
1669	*/
1670	rc2 = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousRecursionPop, RT_INDEFINITE_WAIT);
1671	AssertLogRelRC(rc2);
1672
1673	/*
1674	* Last thread out of here signals the initiator.
1675	*/
1676	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) == pVM->cCpus)
1677	{
1678	rc2 = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
1679	AssertLogRelRC(rc2);
1680	}
1681
1682	/*
1683	* Merge status codes and return.
1684	*/
1685	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
1686	if ( rcStrict2 != VINF_SUCCESS
1687	&& ( rcStrict == VINF_SUCCESS
1688	\|\| rcStrict > rcStrict2))
1689	rcStrict = rcStrict2;
1690	return rcStrict;
1691	}
1692
1693
1694	/**
1695	* Count returns and have the last non-caller EMT wake up the caller.
1696	*
1697	* @returns VBox strict informational status code for EM scheduling. No failures
1698	* will be returned here, those are for the caller only.
1699	*
1700	* @param pVM The cross context VM structure.
1701	* @param rcStrict The current accumulated recursive status code,
1702	* to be merged with i32RendezvousStatus and
1703	* returned.
1704	*/
1705	DECL_FORCE_INLINE(VBOXSTRICTRC) vmmR3EmtRendezvousNonCallerReturn(PVM pVM, VBOXSTRICTRC rcStrict)
1706	{
1707	VBOXSTRICTRC rcStrict2 = ASMAtomicReadS32(&pVM->vmm.s.i32RendezvousStatus);
1708
1709	uint32_t cReturned = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsReturned);
1710	if (cReturned == pVM->cCpus - 1U)
1711	{
1712	int rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
1713	AssertLogRelRC(rc);
1714	}
1715
1716	/*
1717	* Merge the status codes, ignoring error statuses in this code path.
1718	*/
1719	AssertLogRelMsgReturn( rcStrict2 <= VINF_SUCCESS
1720	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1721	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)),
1722	VERR_IPE_UNEXPECTED_INFO_STATUS);
1723
1724	if (RT_SUCCESS(rcStrict2))
1725	{
1726	if ( rcStrict2 != VINF_SUCCESS
1727	&& ( rcStrict == VINF_SUCCESS
1728	\|\| rcStrict > rcStrict2))
1729	rcStrict = rcStrict2;
1730	}
1731	return rcStrict;
1732	}
1733
1734
1735	/**
1736	* Common worker for VMMR3EmtRendezvous and VMMR3EmtRendezvousFF.
1737	*
1738	* @returns VBox strict informational status code for EM scheduling. No failures
1739	* will be returned here, those are for the caller only. When
1740	* fIsCaller is set, VINF_SUCCESS is always returned.
1741	*
1742	* @param pVM The cross context VM structure.
1743	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1744	* @param fIsCaller Whether we're the VMMR3EmtRendezvous caller or
1745	* not.
1746	* @param fFlags The flags.
1747	* @param pfnRendezvous The callback.
1748	* @param pvUser The user argument for the callback.
1749	*/
1750	static VBOXSTRICTRC vmmR3EmtRendezvousCommon(PVM pVM, PVMCPU pVCpu, bool fIsCaller,
1751	uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1752	{
1753	int rc;
1754	VBOXSTRICTRC rcStrictRecursion = VINF_SUCCESS;
1755
1756	/*
1757	* Enter, the last EMT triggers the next callback phase.
1758	*/
1759	uint32_t cEntered = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsEntered);
1760	if (cEntered != pVM->cCpus)
1761	{
1762	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1763	{
1764	/* Wait for our turn. */
1765	for (;;)
1766	{
1767	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, RT_INDEFINITE_WAIT);
1768	AssertLogRelRC(rc);
1769	if (!pVM->vmm.s.fRendezvousRecursion)
1770	break;
1771	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1772	}
1773	}
1774	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1775	{
1776	/* Wait for the last EMT to arrive and wake everyone up. */
1777	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce, RT_INDEFINITE_WAIT);
1778	AssertLogRelRC(rc);
1779	Assert(!pVM->vmm.s.fRendezvousRecursion);
1780	}
1781	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1782	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1783	{
1784	/* Wait for our turn. */
1785	for (;;)
1786	{
1787	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1788	AssertLogRelRC(rc);
1789	if (!pVM->vmm.s.fRendezvousRecursion)
1790	break;
1791	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1792	}
1793	}
1794	else
1795	{
1796	Assert((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE);
1797
1798	/*
1799	* The execute once is handled specially to optimize the code flow.
1800	*
1801	* The last EMT to arrive will perform the callback and the other
1802	* EMTs will wait on the Done/DoneCaller semaphores (instead of
1803	* the EnterOneByOne/AllAtOnce) in the meanwhile. When the callback
1804	* returns, that EMT will initiate the normal return sequence.
1805	*/
1806	if (!fIsCaller)
1807	{
1808	for (;;)
1809	{
1810	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1811	AssertLogRelRC(rc);
1812	if (!pVM->vmm.s.fRendezvousRecursion)
1813	break;
1814	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1815	}
1816
1817	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1818	}
1819	return VINF_SUCCESS;
1820	}
1821	}
1822	else
1823	{
1824	/*
1825	* All EMTs are waiting, clear the FF and take action according to the
1826	* execution method.
1827	*/
1828	VM_FF_CLEAR(pVM, VM_FF_EMT_RENDEZVOUS);
1829
1830	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE)
1831	{
1832	/* Wake up everyone. */
1833	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce);
1834	AssertLogRelRC(rc);
1835	}
1836	else if ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1837	\|\| (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1838	{
1839	/* Figure out who to wake up and wake it up. If it's ourself, then
1840	it's easy otherwise wait for our turn. */
1841	VMCPUID iFirst = (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
1842	? 0
1843	: pVM->cCpus - 1U;
1844	if (pVCpu->idCpu != iFirst)
1845	{
1846	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iFirst]);
1847	AssertLogRelRC(rc);
1848	for (;;)
1849	{
1850	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu], RT_INDEFINITE_WAIT);
1851	AssertLogRelRC(rc);
1852	if (!pVM->vmm.s.fRendezvousRecursion)
1853	break;
1854	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1855	}
1856	}
1857	}
1858	/* else: execute the handler on the current EMT and wake up one or more threads afterwards. */
1859	}
1860
1861
1862	/*
1863	* Do the callback and update the status if necessary.
1864	*/
1865	if ( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
1866	\|\| RT_SUCCESS(ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus)) )
1867	{
1868	VBOXSTRICTRC rcStrict2 = pfnRendezvous(pVM, pVCpu, pvUser);
1869	if (rcStrict2 != VINF_SUCCESS)
1870	{
1871	AssertLogRelMsg( rcStrict2 <= VINF_SUCCESS
1872	\|\| (rcStrict2 >= VINF_EM_FIRST && rcStrict2 <= VINF_EM_LAST),
1873	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict2)));
1874	int32_t i32RendezvousStatus;
1875	do
1876	{
1877	i32RendezvousStatus = ASMAtomicUoReadS32(&pVM->vmm.s.i32RendezvousStatus);
1878	if ( rcStrict2 == i32RendezvousStatus
1879	\|\| RT_FAILURE(i32RendezvousStatus)
1880	\|\| ( i32RendezvousStatus != VINF_SUCCESS
1881	&& rcStrict2 > i32RendezvousStatus))
1882	break;
1883	} while (!ASMAtomicCmpXchgS32(&pVM->vmm.s.i32RendezvousStatus, VBOXSTRICTRC_VAL(rcStrict2), i32RendezvousStatus));
1884	}
1885	}
1886
1887	/*
1888	* Increment the done counter and take action depending on whether we're
1889	* the last to finish callback execution.
1890	*/
1891	uint32_t cDone = ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsDone);
1892	if ( cDone != pVM->cCpus
1893	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE)
1894	{
1895	/* Signal the next EMT? */
1896	if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
1897	{
1898	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
1899	AssertLogRelRC(rc);
1900	}
1901	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
1902	{
1903	Assert(cDone == pVCpu->idCpu + 1U);
1904	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVCpu->idCpu + 1U]);
1905	AssertLogRelRC(rc);
1906	}
1907	else if ((fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
1908	{
1909	Assert(pVM->cCpus - cDone == pVCpu->idCpu);
1910	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[pVM->cCpus - cDone - 1U]);
1911	AssertLogRelRC(rc);
1912	}
1913
1914	/* Wait for the rest to finish (the caller waits on hEvtRendezvousDoneCaller). */
1915	if (!fIsCaller)
1916	{
1917	for (;;)
1918	{
1919	rc = RTSemEventMultiWait(pVM->vmm.s.hEvtMulRendezvousDone, RT_INDEFINITE_WAIT);
1920	AssertLogRelRC(rc);
1921	if (!pVM->vmm.s.fRendezvousRecursion)
1922	break;
1923	rcStrictRecursion = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrictRecursion);
1924	}
1925	}
1926	}
1927	else
1928	{
1929	/* Callback execution is all done, tell the rest to return. */
1930	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
1931	AssertLogRelRC(rc);
1932	}
1933
1934	if (!fIsCaller)
1935	return vmmR3EmtRendezvousNonCallerReturn(pVM, rcStrictRecursion);
1936	return rcStrictRecursion;
1937	}
1938
1939
1940	/**
1941	* Called in response to VM_FF_EMT_RENDEZVOUS.
1942	*
1943	* @returns VBox strict status code - EM scheduling. No errors will be returned
1944	* here, nor will any non-EM scheduling status codes be returned.
1945	*
1946	* @param pVM The cross context VM structure.
1947	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1948	*
1949	* @thread EMT
1950	*/
1951	VMMR3_INT_DECL(int) VMMR3EmtRendezvousFF(PVM pVM, PVMCPU pVCpu)
1952	{
1953	Assert(!pVCpu->vmm.s.fInRendezvous);
1954	Log(("VMMR3EmtRendezvousFF: EMT%#u\n", pVCpu->idCpu));
1955	pVCpu->vmm.s.fInRendezvous = true;
1956	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, false /* fIsCaller */, pVM->vmm.s.fRendezvousFlags,
1957	pVM->vmm.s.pfnRendezvous, pVM->vmm.s.pvRendezvousUser);
1958	pVCpu->vmm.s.fInRendezvous = false;
1959	Log(("VMMR3EmtRendezvousFF: EMT%#u returns %Rrc\n", pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
1960	return VBOXSTRICTRC_TODO(rcStrict);
1961	}
1962
1963
1964	/**
1965	* Helper for resetting an single wakeup event sempahore.
1966	*
1967	* @returns VERR_TIMEOUT on success, RTSemEventWait status otherwise.
1968	* @param hEvt The event semaphore to reset.
1969	*/
1970	static int vmmR3HlpResetEvent(RTSEMEVENT hEvt)
1971	{
1972	for (uint32_t cLoops = 0; ; cLoops++)
1973	{
1974	int rc = RTSemEventWait(hEvt, 0 /cMsTimeout/);
1975	if (rc != VINF_SUCCESS \|\| cLoops > _4K)
1976	return rc;
1977	}
1978	}
1979
1980
1981	/**
1982	* Worker for VMMR3EmtRendezvous that handles recursion.
1983	*
1984	* @returns VBox strict status code. This will be the first error,
1985	* VINF_SUCCESS, or an EM scheduling status code.
1986	*
1987	* @param pVM The cross context VM structure.
1988	* @param pVCpu The cross context virtual CPU structure of the
1989	* calling EMT.
1990	* @param fFlags Flags indicating execution methods. See
1991	* grp_VMMR3EmtRendezvous_fFlags.
1992	* @param pfnRendezvous The callback.
1993	* @param pvUser User argument for the callback.
1994	*
1995	* @thread EMT(pVCpu)
1996	*/
1997	static VBOXSTRICTRC vmmR3EmtRendezvousRecursive(PVM pVM, PVMCPU pVCpu, uint32_t fFlags,
1998	PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
1999	{
2000	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d\n", fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions));
2001	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
2002	Assert(pVCpu->vmm.s.fInRendezvous);
2003
2004	/*
2005	* Save the current state.
2006	*/
2007	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
2008	uint32_t const cParentDone = pVM->vmm.s.cRendezvousEmtsDone;
2009	int32_t const iParentStatus = pVM->vmm.s.i32RendezvousStatus;
2010	PFNVMMEMTRENDEZVOUS const pfnParent = pVM->vmm.s.pfnRendezvous;
2011	void * const pvParentUser = pVM->vmm.s.pvRendezvousUser;
2012
2013	/*
2014	* Check preconditions and save the current state.
2015	*/
2016	AssertReturn( (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2017	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2018	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2019	\|\| (fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
2020	VERR_INTERNAL_ERROR);
2021	AssertReturn(pVM->vmm.s.cRendezvousEmtsEntered == pVM->cCpus, VERR_INTERNAL_ERROR_2);
2022	AssertReturn(pVM->vmm.s.cRendezvousEmtsReturned == 0, VERR_INTERNAL_ERROR_3);
2023
2024	/*
2025	* Reset the recursion prep and pop semaphores.
2026	*/
2027	int rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
2028	AssertLogRelRCReturn(rc, rc);
2029	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
2030	AssertLogRelRCReturn(rc, rc);
2031	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPushCaller);
2032	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
2033	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller);
2034	AssertLogRelMsgReturn(rc == VERR_TIMEOUT, ("%Rrc\n", rc), RT_FAILURE_NP(rc) ? rc : VERR_IPE_UNEXPECTED_INFO_STATUS);
2035
2036	/*
2037	* Usher the other thread into the recursion routine.
2038	*/
2039	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush, 0);
2040	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, true);
2041
2042	uint32_t cLeft = pVM->cCpus - (cParentDone + 1U);
2043	if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE)
2044	while (cLeft-- > 0)
2045	{
2046	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousEnterOneByOne);
2047	AssertLogRelRC(rc);
2048	}
2049	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING)
2050	{
2051	Assert(cLeft == pVM->cCpus - (pVCpu->idCpu + 1U));
2052	for (VMCPUID iCpu = pVCpu->idCpu + 1U; iCpu < pVM->cCpus; iCpu++)
2053	{
2054	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu]);
2055	AssertLogRelRC(rc);
2056	}
2057	}
2058	else if ((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING)
2059	{
2060	Assert(cLeft == pVCpu->idCpu);
2061	for (VMCPUID iCpu = pVCpu->idCpu; iCpu > 0; iCpu--)
2062	{
2063	rc = RTSemEventSignal(pVM->vmm.s.pahEvtRendezvousEnterOrdered[iCpu - 1U]);
2064	AssertLogRelRC(rc);
2065	}
2066	}
2067	else
2068	AssertLogRelReturn((fParentFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE,
2069	VERR_INTERNAL_ERROR_4);
2070
2071	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousDone);
2072	AssertLogRelRC(rc);
2073	rc = RTSemEventSignal(pVM->vmm.s.hEvtRendezvousDoneCaller);
2074	AssertLogRelRC(rc);
2075
2076
2077	/*
2078	* Wait for the EMTs to wake up and get out of the parent rendezvous code.
2079	*/
2080	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPush) != pVM->cCpus)
2081	{
2082	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPushCaller, RT_INDEFINITE_WAIT);
2083	AssertLogRelRC(rc);
2084	}
2085
2086	ASMAtomicWriteBool(&pVM->vmm.s.fRendezvousRecursion, false);
2087
2088	/*
2089	* Clear the slate and setup the new rendezvous.
2090	*/
2091	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2092	{
2093	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
2094	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2095	}
2096	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2097	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2098	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2099	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2100
2101	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
2102	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
2103	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2104	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
2105	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
2106	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
2107	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
2108	ASMAtomicIncU32(&pVM->vmm.s.cRendezvousRecursions);
2109
2110	/*
2111	* We're ready to go now, do normal rendezvous processing.
2112	*/
2113	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPush);
2114	AssertLogRelRC(rc);
2115
2116	VBOXSTRICTRC rcStrict = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /fIsCaller/, fFlags, pfnRendezvous, pvUser);
2117
2118	/*
2119	* The caller waits for the other EMTs to be done, return and waiting on the
2120	* pop semaphore.
2121	*/
2122	for (;;)
2123	{
2124	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
2125	AssertLogRelRC(rc);
2126	if (!pVM->vmm.s.fRendezvousRecursion)
2127	break;
2128	rcStrict = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict);
2129	}
2130
2131	/*
2132	* Get the return code and merge it with the above recursion status.
2133	*/
2134	VBOXSTRICTRC rcStrict2 = pVM->vmm.s.i32RendezvousStatus;
2135	if ( rcStrict2 != VINF_SUCCESS
2136	&& ( rcStrict == VINF_SUCCESS
2137	\|\| rcStrict > rcStrict2))
2138	rcStrict = rcStrict2;
2139
2140	/*
2141	* Restore the parent rendezvous state.
2142	*/
2143	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2144	{
2145	rc = vmmR3HlpResetEvent(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i]);
2146	AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2147	}
2148	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousEnterOneByOne); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2149	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2150	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2151	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousDoneCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2152
2153	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, pVM->cCpus);
2154	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2155	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, cParentDone);
2156	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, iParentStatus);
2157	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fParentFlags);
2158	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvParentUser);
2159	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnParent);
2160
2161	/*
2162	* Usher the other EMTs back to their parent recursion routine, waiting
2163	* for them to all get there before we return (makes sure they've been
2164	* scheduled and are past the pop event sem, see below).
2165	*/
2166	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop, 0);
2167	rc = RTSemEventMultiSignal(pVM->vmm.s.hEvtMulRendezvousRecursionPop);
2168	AssertLogRelRC(rc);
2169
2170	if (ASMAtomicIncU32(&pVM->vmm.s.cRendezvousEmtsRecursingPop) != pVM->cCpus)
2171	{
2172	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousRecursionPopCaller, RT_INDEFINITE_WAIT);
2173	AssertLogRelRC(rc);
2174	}
2175
2176	/*
2177	* We must reset the pop semaphore on the way out (doing the pop caller too,
2178	* just in case). The parent may be another recursion.
2179	*/
2180	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousRecursionPop); AssertLogRelRC(rc);
2181	rc = vmmR3HlpResetEvent(pVM->vmm.s.hEvtRendezvousRecursionPopCaller); AssertLogRelMsg(rc == VERR_TIMEOUT, ("%Rrc\n", rc));
2182
2183	ASMAtomicDecU32(&pVM->vmm.s.cRendezvousRecursions);
2184
2185	Log(("vmmR3EmtRendezvousRecursive: %#x EMT#%u depth=%d returns %Rrc\n",
2186	fFlags, pVCpu->idCpu, pVM->vmm.s.cRendezvousRecursions, VBOXSTRICTRC_VAL(rcStrict)));
2187	return rcStrict;
2188	}
2189
2190
2191	/**
2192	* EMT rendezvous.
2193	*
2194	* Gathers all the EMTs and execute some code on each of them, either in a one
2195	* by one fashion or all at once.
2196	*
2197	* @returns VBox strict status code. This will be the first error,
2198	* VINF_SUCCESS, or an EM scheduling status code.
2199	*
2200	* @retval VERR_DEADLOCK if recursion is attempted using a rendezvous type that
2201	* doesn't support it or if the recursion is too deep.
2202	*
2203	* @param pVM The cross context VM structure.
2204	* @param fFlags Flags indicating execution methods. See
2205	* grp_VMMR3EmtRendezvous_fFlags. The one-by-one,
2206	* descending and ascending rendezvous types support
2207	* recursion from inside @a pfnRendezvous.
2208	* @param pfnRendezvous The callback.
2209	* @param pvUser User argument for the callback.
2210	*
2211	* @thread Any.
2212	*/
2213	VMMR3DECL(int) VMMR3EmtRendezvous(PVM pVM, uint32_t fFlags, PFNVMMEMTRENDEZVOUS pfnRendezvous, void *pvUser)
2214	{
2215	/*
2216	* Validate input.
2217	*/
2218	AssertReturn(pVM, VERR_INVALID_VM_HANDLE);
2219	AssertMsg( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_INVALID
2220	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) <= VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2221	&& !(fFlags & ~VMMEMTRENDEZVOUS_FLAGS_VALID_MASK), ("%#x\n", fFlags));
2222	AssertMsg( !(fFlags & VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR)
2223	\|\| ( (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ALL_AT_ONCE
2224	&& (fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) != VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE),
2225	("type %u\n", fFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK));
2226
2227	VBOXSTRICTRC rcStrict;
2228	PVMCPU pVCpu = VMMGetCpu(pVM);
2229	if (!pVCpu)
2230	{
2231	/*
2232	* Forward the request to an EMT thread.
2233	*/
2234	Log(("VMMR3EmtRendezvous: %#x non-EMT\n", fFlags));
2235	if (!(fFlags & VMMEMTRENDEZVOUS_FLAGS_PRIORITY))
2236	rcStrict = VMR3ReqCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
2237	else
2238	rcStrict = VMR3ReqPriorityCallWait(pVM, VMCPUID_ANY, (PFNRT)VMMR3EmtRendezvous, 4, pVM, fFlags, pfnRendezvous, pvUser);
2239	Log(("VMMR3EmtRendezvous: %#x non-EMT returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
2240	}
2241	else if ( pVM->cCpus == 1
2242	\|\| ( pVM->enmVMState == VMSTATE_DESTROYING
2243	&& VMR3GetActiveEmts(pVM->pUVM) < pVM->cCpus ) )
2244	{
2245	/*
2246	* Shortcut for the single EMT case.
2247	*
2248	* We also ends up here if EMT(0) (or others) tries to issue a rendezvous
2249	* during vmR3Destroy after other emulation threads have started terminating.
2250	*/
2251	if (!pVCpu->vmm.s.fInRendezvous)
2252	{
2253	Log(("VMMR3EmtRendezvous: %#x EMT (uni)\n", fFlags));
2254	pVCpu->vmm.s.fInRendezvous = true;
2255	pVM->vmm.s.fRendezvousFlags = fFlags;
2256	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
2257	pVCpu->vmm.s.fInRendezvous = false;
2258	}
2259	else
2260	{
2261	/* Recursion. Do the same checks as in the SMP case. */
2262	Log(("VMMR3EmtRendezvous: %#x EMT (uni), recursion depth=%d\n", fFlags, pVM->vmm.s.cRendezvousRecursions));
2263	uint32_t fType = pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK;
2264	AssertLogRelReturn( !pVCpu->vmm.s.fInRendezvous
2265	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2266	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2267	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2268	\|\| fType == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
2269	, VERR_DEADLOCK);
2270
2271	AssertLogRelReturn(pVM->vmm.s.cRendezvousRecursions < 3, VERR_DEADLOCK);
2272	pVM->vmm.s.cRendezvousRecursions++;
2273	uint32_t const fParentFlags = pVM->vmm.s.fRendezvousFlags;
2274	pVM->vmm.s.fRendezvousFlags = fFlags;
2275
2276	rcStrict = pfnRendezvous(pVM, pVCpu, pvUser);
2277
2278	pVM->vmm.s.fRendezvousFlags = fParentFlags;
2279	pVM->vmm.s.cRendezvousRecursions--;
2280	}
2281	Log(("VMMR3EmtRendezvous: %#x EMT (uni) returns %Rrc\n", fFlags, VBOXSTRICTRC_VAL(rcStrict)));
2282	}
2283	else
2284	{
2285	/*
2286	* Spin lock. If busy, check for recursion, if not recursing wait for
2287	* the other EMT to finish while keeping a lookout for the RENDEZVOUS FF.
2288	*/
2289	int rc;
2290	rcStrict = VINF_SUCCESS;
2291	if (RT_UNLIKELY(!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0)))
2292	{
2293	/* Allow recursion in some cases. */
2294	if ( pVCpu->vmm.s.fInRendezvous
2295	&& ( (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ASCENDING
2296	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING
2297	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE
2298	\|\| (pVM->vmm.s.fRendezvousFlags & VMMEMTRENDEZVOUS_FLAGS_TYPE_MASK) == VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE
2299	))
2300	return VBOXSTRICTRC_TODO(vmmR3EmtRendezvousRecursive(pVM, pVCpu, fFlags, pfnRendezvous, pvUser));
2301
2302	AssertLogRelMsgReturn(!pVCpu->vmm.s.fInRendezvous, ("fRendezvousFlags=%#x\n", pVM->vmm.s.fRendezvousFlags),
2303	VERR_DEADLOCK);
2304
2305	Log(("VMMR3EmtRendezvous: %#x EMT#%u, waiting for lock...\n", fFlags, pVCpu->idCpu));
2306	while (!ASMAtomicCmpXchgU32(&pVM->vmm.s.u32RendezvousLock, 0x77778888, 0))
2307	{
2308	if (VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS))
2309	{
2310	rc = VMMR3EmtRendezvousFF(pVM, pVCpu);
2311	if ( rc != VINF_SUCCESS
2312	&& ( rcStrict == VINF_SUCCESS
2313	\|\| rcStrict > rc))
2314	rcStrict = rc;
2315	/** @todo Perhaps deal with termination here? */
2316	}
2317	ASMNopPause();
2318	}
2319	}
2320
2321	Log(("VMMR3EmtRendezvous: %#x EMT#%u\n", fFlags, pVCpu->idCpu));
2322	Assert(!VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS));
2323	Assert(!pVCpu->vmm.s.fInRendezvous);
2324	pVCpu->vmm.s.fInRendezvous = true;
2325
2326	/*
2327	* Clear the slate and setup the rendezvous. This is a semaphore ping-pong orgy. :-)
2328	*/
2329	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2330	{
2331	rc = RTSemEventWait(pVM->vmm.s.pahEvtRendezvousEnterOrdered[i], 0);
2332	AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2333	}
2334	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousEnterOneByOne, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2335	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousEnterAllAtOnce); AssertLogRelRC(rc);
2336	rc = RTSemEventMultiReset(pVM->vmm.s.hEvtMulRendezvousDone); AssertLogRelRC(rc);
2337	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, 0); AssertLogRelMsg(rc == VERR_TIMEOUT \|\| rc == VINF_SUCCESS, ("%Rrc\n", rc));
2338	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsEntered, 0);
2339	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsDone, 0);
2340	ASMAtomicWriteU32(&pVM->vmm.s.cRendezvousEmtsReturned, 0);
2341	ASMAtomicWriteS32(&pVM->vmm.s.i32RendezvousStatus, VINF_SUCCESS);
2342	ASMAtomicWritePtr((void * volatile )&pVM->vmm.s.pfnRendezvous, (void )(uintptr_t)pfnRendezvous);
2343	ASMAtomicWritePtr(&pVM->vmm.s.pvRendezvousUser, pvUser);
2344	ASMAtomicWriteU32(&pVM->vmm.s.fRendezvousFlags, fFlags);
2345
2346	/*
2347	* Set the FF and poke the other EMTs.
2348	*/
2349	VM_FF_SET(pVM, VM_FF_EMT_RENDEZVOUS);
2350	VMR3NotifyGlobalFFU(pVM->pUVM, VMNOTIFYFF_FLAGS_POKE);
2351
2352	/*
2353	* Do the same ourselves.
2354	*/
2355	VBOXSTRICTRC rcStrict2 = vmmR3EmtRendezvousCommon(pVM, pVCpu, true /* fIsCaller */, fFlags, pfnRendezvous, pvUser);
2356
2357	/*
2358	* The caller waits for the other EMTs to be done and return before doing
2359	* the cleanup. This makes away with wakeup / reset races we would otherwise
2360	* risk in the multiple release event semaphore code (hEvtRendezvousDoneCaller).
2361	*/
2362	for (;;)
2363	{
2364	rc = RTSemEventWait(pVM->vmm.s.hEvtRendezvousDoneCaller, RT_INDEFINITE_WAIT);
2365	AssertLogRelRC(rc);
2366	if (!pVM->vmm.s.fRendezvousRecursion)
2367	break;
2368	rcStrict2 = vmmR3EmtRendezvousCommonRecursion(pVM, pVCpu, rcStrict2);
2369	}
2370
2371	/*
2372	* Get the return code and clean up a little bit.
2373	*/
2374	VBOXSTRICTRC rcStrict3 = pVM->vmm.s.i32RendezvousStatus;
2375	ASMAtomicWriteNullPtr((void * volatile *)&pVM->vmm.s.pfnRendezvous);
2376
2377	ASMAtomicWriteU32(&pVM->vmm.s.u32RendezvousLock, 0);
2378	pVCpu->vmm.s.fInRendezvous = false;
2379
2380	/*
2381	* Merge rcStrict, rcStrict2 and rcStrict3.
2382	*/
2383	AssertRC(VBOXSTRICTRC_VAL(rcStrict));
2384	AssertRC(VBOXSTRICTRC_VAL(rcStrict2));
2385	if ( rcStrict2 != VINF_SUCCESS
2386	&& ( rcStrict == VINF_SUCCESS
2387	\|\| rcStrict > rcStrict2))
2388	rcStrict = rcStrict2;
2389	if ( rcStrict3 != VINF_SUCCESS
2390	&& ( rcStrict == VINF_SUCCESS
2391	\|\| rcStrict > rcStrict3))
2392	rcStrict = rcStrict3;
2393	Log(("VMMR3EmtRendezvous: %#x EMT#%u returns %Rrc\n", fFlags, pVCpu->idCpu, VBOXSTRICTRC_VAL(rcStrict)));
2394	}
2395
2396	AssertLogRelMsgReturn( rcStrict <= VINF_SUCCESS
2397	\|\| (rcStrict >= VINF_EM_FIRST && rcStrict <= VINF_EM_LAST),
2398	("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)),
2399	VERR_IPE_UNEXPECTED_INFO_STATUS);
2400	return VBOXSTRICTRC_VAL(rcStrict);
2401	}
2402
2403
2404	/**
2405	* Read from the ring 0 jump buffer stack.
2406	*
2407	* @returns VBox status code.
2408	*
2409	* @param pVM The cross context VM structure.
2410	* @param idCpu The ID of the source CPU context (for the address).
2411	* @param R0Addr Where to start reading.
2412	* @param pvBuf Where to store the data we've read.
2413	* @param cbRead The number of bytes to read.
2414	*/
2415	VMMR3_INT_DECL(int) VMMR3ReadR0Stack(PVM pVM, VMCPUID idCpu, RTHCUINTPTR R0Addr, void *pvBuf, size_t cbRead)
2416	{
2417	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
2418	AssertReturn(pVCpu, VERR_INVALID_PARAMETER);
2419
2420	#ifdef VMM_R0_SWITCH_STACK
2421	RTHCUINTPTR off = R0Addr - MMHyperCCToR0(pVM, pVCpu->vmm.s.pbEMTStackR3);
2422	#else
2423	RTHCUINTPTR off = pVCpu->vmm.s.CallRing3JmpBufR0.cbSavedStack - (pVCpu->vmm.s.CallRing3JmpBufR0.SpCheck - R0Addr);
2424	#endif
2425	if ( off > VMM_STACK_SIZE
2426	\|\| off + cbRead >= VMM_STACK_SIZE)
2427	return VERR_INVALID_POINTER;
2428
2429	memcpy(pvBuf, &pVCpu->vmm.s.pbEMTStackR3[off], cbRead);
2430	return VINF_SUCCESS;
2431	}
2432
2433	#ifdef VBOX_WITH_RAW_MODE
2434
2435	/**
2436	* Calls a RC function.
2437	*
2438	* @param pVM The cross context VM structure.
2439	* @param RCPtrEntry The address of the RC function.
2440	* @param cArgs The number of arguments in the ....
2441	* @param ... Arguments to the function.
2442	*/
2443	VMMR3DECL(int) VMMR3CallRC(PVM pVM, RTRCPTR RCPtrEntry, unsigned cArgs, ...)
2444	{
2445	va_list args;
2446	va_start(args, cArgs);
2447	int rc = VMMR3CallRCV(pVM, RCPtrEntry, cArgs, args);
2448	va_end(args);
2449	return rc;
2450	}
2451
2452
2453	/**
2454	* Calls a RC function.
2455	*
2456	* @param pVM The cross context VM structure.
2457	* @param RCPtrEntry The address of the RC function.
2458	* @param cArgs The number of arguments in the ....
2459	* @param args Arguments to the function.
2460	*/
2461	VMMR3DECL(int) VMMR3CallRCV(PVM pVM, RTRCPTR RCPtrEntry, unsigned cArgs, va_list args)
2462	{
2463	/* Raw mode implies 1 VCPU. */
2464	AssertReturn(pVM->cCpus == 1, VERR_RAW_MODE_INVALID_SMP);
2465	PVMCPU pVCpu = &pVM->aCpus[0];
2466
2467	Log2(("VMMR3CallGCV: RCPtrEntry=%RRv cArgs=%d\n", RCPtrEntry, cArgs));
2468
2469	/*
2470	* Setup the call frame using the trampoline.
2471	*/
2472	CPUMSetHyperState(pVCpu,
2473	pVM->vmm.s.pfnCallTrampolineRC, /* eip */
2474	pVCpu->vmm.s.pbEMTStackBottomRC - cArgs * sizeof(RTGCUINTPTR32), /* esp */
2475	RCPtrEntry, /* eax */
2476	cArgs /* edx */
2477	);
2478
2479	#if 0
2480	memset(pVCpu->vmm.s.pbEMTStackR3, 0xaa, VMM_STACK_SIZE); /* Clear the stack. */
2481	#endif
2482	PRTGCUINTPTR32 pFrame = (PRTGCUINTPTR32)(pVCpu->vmm.s.pbEMTStackR3 + VMM_STACK_SIZE) - cArgs;
2483	int i = cArgs;
2484	while (i-- > 0)
2485	*pFrame++ = va_arg(args, RTGCUINTPTR32);
2486
2487	CPUMPushHyper(pVCpu, cArgs * sizeof(RTGCUINTPTR32)); /* stack frame size */
2488	CPUMPushHyper(pVCpu, RCPtrEntry); /* what to call */
2489
2490	/*
2491	* We hide log flushes (outer) and hypervisor interrupts (inner).
2492	*/
2493	for (;;)
2494	{
2495	int rc;
2496	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
2497	do
2498	{
2499	#ifdef NO_SUPCALLR0VMM
2500	rc = VERR_GENERAL_FAILURE;
2501	#else
2502	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
2503	if (RT_LIKELY(rc == VINF_SUCCESS))
2504	rc = pVCpu->vmm.s.iLastGZRc;
2505	#endif
2506	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
2507
2508	/*
2509	* Flush the loggers.
2510	*/
2511	#ifdef LOG_ENABLED
2512	PRTLOGGERRC pLogger = pVM->vmm.s.pRCLoggerR3;
2513	if ( pLogger
2514	&& pLogger->offScratch > 0)
2515	RTLogFlushRC(NULL, pLogger);
2516	#endif
2517	#ifdef VBOX_WITH_RC_RELEASE_LOGGING
2518	PRTLOGGERRC pRelLogger = pVM->vmm.s.pRCRelLoggerR3;
2519	if (RT_UNLIKELY(pRelLogger && pRelLogger->offScratch > 0))
2520	RTLogFlushRC(RTLogRelGetDefaultInstance(), pRelLogger);
2521	#endif
2522	if (rc == VERR_TRPM_PANIC \|\| rc == VERR_TRPM_DONT_PANIC)
2523	VMMR3FatalDump(pVM, pVCpu, rc);
2524	if (rc != VINF_VMM_CALL_HOST)
2525	{
2526	Log2(("VMMR3CallGCV: returns %Rrc (cs:eip=%04x:%08x)\n", rc, CPUMGetGuestCS(pVCpu), CPUMGetGuestEIP(pVCpu)));
2527	return rc;
2528	}
2529	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2530	if (RT_FAILURE(rc))
2531	return rc;
2532	}
2533	}
2534
2535	#endif /* VBOX_WITH_RAW_MODE */
2536
2537	/**
2538	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2539	*
2540	* @returns VBox status code.
2541	* @param pVM The cross context VM structure.
2542	* @param uOperation Operation to execute.
2543	* @param u64Arg Constant argument.
2544	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2545	* details.
2546	*/
2547	VMMR3DECL(int) VMMR3CallR0(PVM pVM, uint32_t uOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2548	{
2549	PVMCPU pVCpu = VMMGetCpu(pVM);
2550	AssertReturn(pVCpu, VERR_VM_THREAD_NOT_EMT);
2551	return VMMR3CallR0Emt(pVM, pVCpu, (VMMR0OPERATION)uOperation, u64Arg, pReqHdr);
2552	}
2553
2554
2555	/**
2556	* Wrapper for SUPR3CallVMMR0Ex which will deal with VINF_VMM_CALL_HOST returns.
2557	*
2558	* @returns VBox status code.
2559	* @param pVM The cross context VM structure.
2560	* @param pVCpu The cross context VM structure.
2561	* @param enmOperation Operation to execute.
2562	* @param u64Arg Constant argument.
2563	* @param pReqHdr Pointer to a request header. See SUPR3CallVMMR0Ex for
2564	* details.
2565	*/
2566	VMMR3_INT_DECL(int) VMMR3CallR0Emt(PVM pVM, PVMCPU pVCpu, VMMR0OPERATION enmOperation, uint64_t u64Arg, PSUPVMMR0REQHDR pReqHdr)
2567	{
2568	int rc;
2569	for (;;)
2570	{
2571	#ifdef NO_SUPCALLR0VMM
2572	rc = VERR_GENERAL_FAILURE;
2573	#else
2574	rc = SUPR3CallVMMR0Ex(pVM->pVMR0, pVCpu->idCpu, enmOperation, u64Arg, pReqHdr);
2575	#endif
2576	/*
2577	* Flush the logs.
2578	*/
2579	#ifdef LOG_ENABLED
2580	if ( pVCpu->vmm.s.pR0LoggerR3
2581	&& pVCpu->vmm.s.pR0LoggerR3->Logger.offScratch > 0)
2582	RTLogFlushR0(NULL, &pVCpu->vmm.s.pR0LoggerR3->Logger);
2583	#endif
2584	if (rc != VINF_VMM_CALL_HOST)
2585	break;
2586	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2587	if (RT_FAILURE(rc) \|\| (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST))
2588	break;
2589	/* Resume R0 */
2590	}
2591
2592	AssertLogRelMsgReturn(rc == VINF_SUCCESS \|\| RT_FAILURE(rc),
2593	("enmOperation=%u rc=%Rrc\n", enmOperation, rc),
2594	VERR_IPE_UNEXPECTED_INFO_STATUS);
2595	return rc;
2596	}
2597
2598
2599	#ifdef VBOX_WITH_RAW_MODE
2600	/**
2601	* Resumes executing hypervisor code when interrupted by a queue flush or a
2602	* debug event.
2603	*
2604	* @returns VBox status code.
2605	* @param pVM The cross context VM structure.
2606	* @param pVCpu The cross context virtual CPU structure.
2607	*/
2608	VMMR3DECL(int) VMMR3ResumeHyper(PVM pVM, PVMCPU pVCpu)
2609	{
2610	Log(("VMMR3ResumeHyper: eip=%RRv esp=%RRv\n", CPUMGetHyperEIP(pVCpu), CPUMGetHyperESP(pVCpu)));
2611	AssertReturn(pVM->cCpus == 1, VERR_RAW_MODE_INVALID_SMP);
2612
2613	/*
2614	* We hide log flushes (outer) and hypervisor interrupts (inner).
2615	*/
2616	for (;;)
2617	{
2618	int rc;
2619	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
2620	do
2621	{
2622	# ifdef NO_SUPCALLR0VMM
2623	rc = VERR_GENERAL_FAILURE;
2624	# else
2625	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
2626	if (RT_LIKELY(rc == VINF_SUCCESS))
2627	rc = pVCpu->vmm.s.iLastGZRc;
2628	# endif
2629	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
2630
2631	/*
2632	* Flush the loggers.
2633	*/
2634	# ifdef LOG_ENABLED
2635	PRTLOGGERRC pLogger = pVM->vmm.s.pRCLoggerR3;
2636	if ( pLogger
2637	&& pLogger->offScratch > 0)
2638	RTLogFlushRC(NULL, pLogger);
2639	# endif
2640	# ifdef VBOX_WITH_RC_RELEASE_LOGGING
2641	PRTLOGGERRC pRelLogger = pVM->vmm.s.pRCRelLoggerR3;
2642	if (RT_UNLIKELY(pRelLogger && pRelLogger->offScratch > 0))
2643	RTLogFlushRC(RTLogRelGetDefaultInstance(), pRelLogger);
2644	# endif
2645	if (rc == VERR_TRPM_PANIC \|\| rc == VERR_TRPM_DONT_PANIC)
2646	VMMR3FatalDump(pVM, pVCpu, rc);
2647	if (rc != VINF_VMM_CALL_HOST)
2648	{
2649	Log(("VMMR3ResumeHyper: returns %Rrc\n", rc));
2650	return rc;
2651	}
2652	rc = vmmR3ServiceCallRing3Request(pVM, pVCpu);
2653	if (RT_FAILURE(rc))
2654	return rc;
2655	}
2656	}
2657	#endif /* VBOX_WITH_RAW_MODE */
2658
2659
2660	/**
2661	* Service a call to the ring-3 host code.
2662	*
2663	* @returns VBox status code.
2664	* @param pVM The cross context VM structure.
2665	* @param pVCpu The cross context virtual CPU structure.
2666	* @remarks Careful with critsects.
2667	*/
2668	static int vmmR3ServiceCallRing3Request(PVM pVM, PVMCPU pVCpu)
2669	{
2670	/*
2671	* We must also check for pending critsect exits or else we can deadlock
2672	* when entering other critsects here.
2673	*/
2674	if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
2675	PDMCritSectBothFF(pVCpu);
2676
2677	switch (pVCpu->vmm.s.enmCallRing3Operation)
2678	{
2679	/*
2680	* Acquire a critical section.
2681	*/
2682	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
2683	{
2684	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectEnterEx((PPDMCRITSECT)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2685	true /fCallRing3/);
2686	break;
2687	}
2688
2689	/*
2690	* Enter a r/w critical section exclusively.
2691	*/
2692	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_EXCL:
2693	{
2694	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterExclEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2695	true /fCallRing3/);
2696	break;
2697	}
2698
2699	/*
2700	* Enter a r/w critical section shared.
2701	*/
2702	case VMMCALLRING3_PDM_CRIT_SECT_RW_ENTER_SHARED:
2703	{
2704	pVCpu->vmm.s.rcCallRing3 = PDMR3CritSectRwEnterSharedEx((PPDMCRITSECTRW)(uintptr_t)pVCpu->vmm.s.u64CallRing3Arg,
2705	true /fCallRing3/);
2706	break;
2707	}
2708
2709	/*
2710	* Acquire the PDM lock.
2711	*/
2712	case VMMCALLRING3_PDM_LOCK:
2713	{
2714	pVCpu->vmm.s.rcCallRing3 = PDMR3LockCall(pVM);
2715	break;
2716	}
2717
2718	/*
2719	* Grow the PGM pool.
2720	*/
2721	case VMMCALLRING3_PGM_POOL_GROW:
2722	{
2723	pVCpu->vmm.s.rcCallRing3 = PGMR3PoolGrow(pVM);
2724	break;
2725	}
2726
2727	/*
2728	* Maps an page allocation chunk into ring-3 so ring-0 can use it.
2729	*/
2730	case VMMCALLRING3_PGM_MAP_CHUNK:
2731	{
2732	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysChunkMap(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2733	break;
2734	}
2735
2736	/*
2737	* Allocates more handy pages.
2738	*/
2739	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
2740	{
2741	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateHandyPages(pVM);
2742	break;
2743	}
2744
2745	/*
2746	* Allocates a large page.
2747	*/
2748	case VMMCALLRING3_PGM_ALLOCATE_LARGE_HANDY_PAGE:
2749	{
2750	pVCpu->vmm.s.rcCallRing3 = PGMR3PhysAllocateLargeHandyPage(pVM, pVCpu->vmm.s.u64CallRing3Arg);
2751	break;
2752	}
2753
2754	/*
2755	* Acquire the PGM lock.
2756	*/
2757	case VMMCALLRING3_PGM_LOCK:
2758	{
2759	pVCpu->vmm.s.rcCallRing3 = PGMR3LockCall(pVM);
2760	break;
2761	}
2762
2763	/*
2764	* Acquire the MM hypervisor heap lock.
2765	*/
2766	case VMMCALLRING3_MMHYPER_LOCK:
2767	{
2768	pVCpu->vmm.s.rcCallRing3 = MMR3LockCall(pVM);
2769	break;
2770	}
2771
2772	#ifdef VBOX_WITH_REM
2773	/*
2774	* Flush REM handler notifications.
2775	*/
2776	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
2777	{
2778	REMR3ReplayHandlerNotifications(pVM);
2779	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2780	break;
2781	}
2782	#endif
2783
2784	/*
2785	* This is a noop. We just take this route to avoid unnecessary
2786	* tests in the loops.
2787	*/
2788	case VMMCALLRING3_VMM_LOGGER_FLUSH:
2789	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2790	LogAlways(("FLUSH\n"));
2791	break;
2792
2793	/*
2794	* Set the VM error message.
2795	*/
2796	case VMMCALLRING3_VM_SET_ERROR:
2797	VMR3SetErrorWorker(pVM);
2798	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2799	break;
2800
2801	/*
2802	* Set the VM runtime error message.
2803	*/
2804	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
2805	pVCpu->vmm.s.rcCallRing3 = VMR3SetRuntimeErrorWorker(pVM);
2806	break;
2807
2808	/*
2809	* Signal a ring 0 hypervisor assertion.
2810	* Cancel the longjmp operation that's in progress.
2811	*/
2812	case VMMCALLRING3_VM_R0_ASSERTION:
2813	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2814	pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call = false;
2815	#ifdef RT_ARCH_X86
2816	pVCpu->vmm.s.CallRing3JmpBufR0.eip = 0;
2817	#else
2818	pVCpu->vmm.s.CallRing3JmpBufR0.rip = 0;
2819	#endif
2820	#ifdef VMM_R0_SWITCH_STACK
2821	(uint64_t )pVCpu->vmm.s.pbEMTStackR3 = 0; /* clear marker */
2822	#endif
2823	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg1));
2824	LogRel(("%s", pVM->vmm.s.szRing0AssertMsg2));
2825	return VERR_VMM_RING0_ASSERTION;
2826
2827	/*
2828	* A forced switch to ring 0 for preemption purposes.
2829	*/
2830	case VMMCALLRING3_VM_R0_PREEMPT:
2831	pVCpu->vmm.s.rcCallRing3 = VINF_SUCCESS;
2832	break;
2833
2834	case VMMCALLRING3_FTM_SET_CHECKPOINT:
2835	pVCpu->vmm.s.rcCallRing3 = FTMR3SetCheckpoint(pVM, (FTMCHECKPOINTTYPE)pVCpu->vmm.s.u64CallRing3Arg);
2836	break;
2837
2838	default:
2839	AssertMsgFailed(("enmCallRing3Operation=%d\n", pVCpu->vmm.s.enmCallRing3Operation));
2840	return VERR_VMM_UNKNOWN_RING3_CALL;
2841	}
2842
2843	pVCpu->vmm.s.enmCallRing3Operation = VMMCALLRING3_INVALID;
2844	return VINF_SUCCESS;
2845	}
2846
2847
2848	/**
2849	* Displays the Force action Flags.
2850	*
2851	* @param pVM The cross context VM structure.
2852	* @param pHlp The output helpers.
2853	* @param pszArgs The additional arguments (ignored).
2854	*/
2855	static DECLCALLBACK(void) vmmR3InfoFF(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
2856	{
2857	int c;
2858	uint32_t f;
2859	NOREF(pszArgs);
2860
2861	#define PRINT_FLAG(prf,flag) do { \
2862	if (f & (prf##flag)) \
2863	{ \
2864	static const char *s_psz = #flag; \
2865	if (!(c % 6)) \
2866	pHlp->pfnPrintf(pHlp, "%s\n %s", c ? "," : "", s_psz); \
2867	else \
2868	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2869	c++; \
2870	f &= ~(prf##flag); \
2871	} \
2872	} while (0)
2873
2874	#define PRINT_GROUP(prf,grp,sfx) do { \
2875	if (f & (prf##grp##sfx)) \
2876	{ \
2877	static const char *s_psz = #grp; \
2878	if (!(c % 5)) \
2879	pHlp->pfnPrintf(pHlp, "%s %s", c ? ",\n" : " Groups:\n", s_psz); \
2880	else \
2881	pHlp->pfnPrintf(pHlp, ", %s", s_psz); \
2882	c++; \
2883	} \
2884	} while (0)
2885
2886	/*
2887	* The global flags.
2888	*/
2889	const uint32_t fGlobalForcedActions = pVM->fGlobalForcedActions;
2890	pHlp->pfnPrintf(pHlp, "Global FFs: %#RX32", fGlobalForcedActions);
2891
2892	/* show the flag mnemonics */
2893	c = 0;
2894	f = fGlobalForcedActions;
2895	PRINT_FLAG(VM_FF_,TM_VIRTUAL_SYNC);
2896	PRINT_FLAG(VM_FF_,PDM_QUEUES);
2897	PRINT_FLAG(VM_FF_,PDM_DMA);
2898	PRINT_FLAG(VM_FF_,DBGF);
2899	PRINT_FLAG(VM_FF_,REQUEST);
2900	PRINT_FLAG(VM_FF_,CHECK_VM_STATE);
2901	PRINT_FLAG(VM_FF_,RESET);
2902	PRINT_FLAG(VM_FF_,EMT_RENDEZVOUS);
2903	PRINT_FLAG(VM_FF_,PGM_NEED_HANDY_PAGES);
2904	PRINT_FLAG(VM_FF_,PGM_NO_MEMORY);
2905	PRINT_FLAG(VM_FF_,PGM_POOL_FLUSH_PENDING);
2906	PRINT_FLAG(VM_FF_,REM_HANDLER_NOTIFY);
2907	PRINT_FLAG(VM_FF_,DEBUG_SUSPEND);
2908	if (f)
2909	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX32\n", c ? "," : "", f);
2910	else
2911	pHlp->pfnPrintf(pHlp, "\n");
2912
2913	/* the groups */
2914	c = 0;
2915	f = fGlobalForcedActions;
2916	PRINT_GROUP(VM_FF_,EXTERNAL_SUSPENDED,_MASK);
2917	PRINT_GROUP(VM_FF_,EXTERNAL_HALTED,_MASK);
2918	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE,_MASK);
2919	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2920	PRINT_GROUP(VM_FF_,HIGH_PRIORITY_POST,_MASK);
2921	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY_POST,_MASK);
2922	PRINT_GROUP(VM_FF_,NORMAL_PRIORITY,_MASK);
2923	PRINT_GROUP(VM_FF_,ALL_REM,_MASK);
2924	if (c)
2925	pHlp->pfnPrintf(pHlp, "\n");
2926
2927	/*
2928	* Per CPU flags.
2929	*/
2930	for (VMCPUID i = 0; i < pVM->cCpus; i++)
2931	{
2932	const uint32_t fLocalForcedActions = pVM->aCpus[i].fLocalForcedActions;
2933	pHlp->pfnPrintf(pHlp, "CPU %u FFs: %#RX32", i, fLocalForcedActions);
2934
2935	/* show the flag mnemonics */
2936	c = 0;
2937	f = fLocalForcedActions;
2938	PRINT_FLAG(VMCPU_FF_,INTERRUPT_APIC);
2939	PRINT_FLAG(VMCPU_FF_,INTERRUPT_PIC);
2940	PRINT_FLAG(VMCPU_FF_,TIMER);
2941	PRINT_FLAG(VMCPU_FF_,INTERRUPT_NMI);
2942	PRINT_FLAG(VMCPU_FF_,INTERRUPT_SMI);
2943	PRINT_FLAG(VMCPU_FF_,PDM_CRITSECT);
2944	PRINT_FLAG(VMCPU_FF_,UNHALT);
2945	PRINT_FLAG(VMCPU_FF_,IEM);
2946	PRINT_FLAG(VMCPU_FF_,UPDATE_APIC);
2947	PRINT_FLAG(VMCPU_FF_,DBGF);
2948	PRINT_FLAG(VMCPU_FF_,REQUEST);
2949	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_CR3);
2950	PRINT_FLAG(VMCPU_FF_,HM_UPDATE_PAE_PDPES);
2951	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3);
2952	PRINT_FLAG(VMCPU_FF_,PGM_SYNC_CR3_NON_GLOBAL);
2953	PRINT_FLAG(VMCPU_FF_,TLB_FLUSH);
2954	PRINT_FLAG(VMCPU_FF_,INHIBIT_INTERRUPTS);
2955	PRINT_FLAG(VMCPU_FF_,BLOCK_NMIS);
2956	PRINT_FLAG(VMCPU_FF_,TO_R3);
2957	PRINT_FLAG(VMCPU_FF_,IOM);
2958	#ifdef VBOX_WITH_RAW_MODE
2959	PRINT_FLAG(VMCPU_FF_,TRPM_SYNC_IDT);
2960	PRINT_FLAG(VMCPU_FF_,SELM_SYNC_TSS);
2961	PRINT_FLAG(VMCPU_FF_,SELM_SYNC_GDT);
2962	PRINT_FLAG(VMCPU_FF_,SELM_SYNC_LDT);
2963	PRINT_FLAG(VMCPU_FF_,CSAM_SCAN_PAGE);
2964	PRINT_FLAG(VMCPU_FF_,CSAM_PENDING_ACTION);
2965	PRINT_FLAG(VMCPU_FF_,CPUM);
2966	#endif
2967	if (f)
2968	pHlp->pfnPrintf(pHlp, "%s\n Unknown bits: %#RX32\n", c ? "," : "", f);
2969	else
2970	pHlp->pfnPrintf(pHlp, "\n");
2971
2972	if (fLocalForcedActions & VMCPU_FF_INHIBIT_INTERRUPTS)
2973	pHlp->pfnPrintf(pHlp, " intr inhibit RIP: %RGp\n", EMGetInhibitInterruptsPC(&pVM->aCpus[i]));
2974
2975	/* the groups */
2976	c = 0;
2977	f = fLocalForcedActions;
2978	PRINT_GROUP(VMCPU_FF_,EXTERNAL_SUSPENDED,_MASK);
2979	PRINT_GROUP(VMCPU_FF_,EXTERNAL_HALTED,_MASK);
2980	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE,_MASK);
2981	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_PRE_RAW,_MASK);
2982	PRINT_GROUP(VMCPU_FF_,HIGH_PRIORITY_POST,_MASK);
2983	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY_POST,_MASK);
2984	PRINT_GROUP(VMCPU_FF_,NORMAL_PRIORITY,_MASK);
2985	PRINT_GROUP(VMCPU_FF_,RESUME_GUEST,_MASK);
2986	PRINT_GROUP(VMCPU_FF_,HM_TO_R3,_MASK);
2987	PRINT_GROUP(VMCPU_FF_,ALL_REM,_MASK);
2988	if (c)
2989	pHlp->pfnPrintf(pHlp, "\n");
2990	}
2991
2992	#undef PRINT_FLAG
2993	#undef PRINT_GROUP
2994	}
2995

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

source: vbox/trunk/src/VBox/VMM/VMMR3/VMM.cpp@ 71289

Download in other formats: