VMMR0.cpp@ 72300

Last change on this file since 72300 was 72300, checked in by vboxsync, 7 years ago

NEM,STAM: Partition memory statistics for NEM. bugref:9044

STAM: Redid the way we handle statistics requiring fetching data from ring-0 (or elsewhere) by introducing a refresh group concept. We'll refresh the statistics for a group if needed and only once per enumeration/query. There's a new registration API for these.
NEM: Added memory balance statistics for the partition. Some failed fumbling thru VID.DLL/SYS, before realizing that hypercall is the only way to get at them.
NEM: Added a hypervisor input/output page buffer for non-EMT threads so we can get statistics. Put the related data and code into separate structure to save duplication.

Property svn:eol-style set to native
Property svn:keywords set to Id Revision

File size: 88.6 KB

Line
1	/* $Id: VMMR0.cpp 72300 2018-05-23 15:13:06Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
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
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_VMM
23	#include <VBox/vmm/vmm.h>
24	#include <VBox/sup.h>
25	#include <VBox/vmm/trpm.h>
26	#include <VBox/vmm/cpum.h>
27	#include <VBox/vmm/pdmapi.h>
28	#include <VBox/vmm/pgm.h>
29	#ifdef VBOX_WITH_NEM_R0
30	# include <VBox/vmm/nem.h>
31	#endif
32	#include <VBox/vmm/stam.h>
33	#include <VBox/vmm/tm.h>
34	#include "VMMInternal.h"
35	#include <VBox/vmm/vm.h>
36	#include <VBox/vmm/gvm.h>
37	#ifdef VBOX_WITH_PCI_PASSTHROUGH
38	# include <VBox/vmm/pdmpci.h>
39	#endif
40	#include <VBox/vmm/apic.h>
41
42	#include <VBox/vmm/gvmm.h>
43	#include <VBox/vmm/gmm.h>
44	#include <VBox/vmm/gim.h>
45	#include <VBox/intnet.h>
46	#include <VBox/vmm/hm.h>
47	#include <VBox/param.h>
48	#include <VBox/err.h>
49	#include <VBox/version.h>
50	#include <VBox/log.h>
51
52	#include <iprt/asm-amd64-x86.h>
53	#include <iprt/assert.h>
54	#include <iprt/crc.h>
55	#include <iprt/mp.h>
56	#include <iprt/once.h>
57	#include <iprt/stdarg.h>
58	#include <iprt/string.h>
59	#include <iprt/thread.h>
60	#include <iprt/timer.h>
61
62	#include "dtrace/VBoxVMM.h"
63
64
65	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
66	# pragma intrinsic(_AddressOfReturnAddress)
67	#endif
68
69	#if defined(RT_OS_DARWIN) && ARCH_BITS == 32
70	# error "32-bit darwin is no longer supported. Go back to 4.3 or earlier!"
71	#endif
72
73
74
75	/*********************************************************************************************************************************
76	* Defined Constants And Macros *
77	*********************************************************************************************************************************/
78	/** @def VMM_CHECK_SMAP_SETUP
79	* SMAP check setup. */
80	/** @def VMM_CHECK_SMAP_CHECK
81	* Checks that the AC flag is set if SMAP is enabled. If AC is not set,
82	* it will be logged and @a a_BadExpr is executed. */
83	/** @def VMM_CHECK_SMAP_CHECK2
84	* Checks that the AC flag is set if SMAP is enabled. If AC is not set, it will
85	* be logged, written to the VMs assertion text buffer, and @a a_BadExpr is
86	* executed. */
87	#if defined(VBOX_STRICT) \|\| 1
88	# define VMM_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = SUPR0GetKernelFeatures()
89	# define VMM_CHECK_SMAP_CHECK(a_BadExpr) \
90	do { \
91	if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \
92	{ \
93	RTCCUINTREG fEflCheck = ASMGetFlags(); \
94	if (RT_LIKELY(fEflCheck & X86_EFL_AC)) \
95	{ /* likely */ } \
96	else \
97	{ \
98	SUPR0Printf("%s, line %d: EFLAGS.AC is clear! (%#x)\n", __FUNCTION__, __LINE__, (uint32_t)fEflCheck); \
99	a_BadExpr; \
100	} \
101	} \
102	} while (0)
103	# define VMM_CHECK_SMAP_CHECK2(a_pVM, a_BadExpr) \
104	do { \
105	if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \
106	{ \
107	RTCCUINTREG fEflCheck = ASMGetFlags(); \
108	if (RT_LIKELY(fEflCheck & X86_EFL_AC)) \
109	{ /* likely */ } \
110	else \
111	{ \
112	SUPR0BadContext((a_pVM) ? (a_pVM)->pSession : NULL, __FILE__, __LINE__, "EFLAGS.AC is zero!"); \
113	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1), \
114	"%s, line %d: EFLAGS.AC is clear! (%#x)\n", __FUNCTION__, __LINE__, (uint32_t)fEflCheck); \
115	a_BadExpr; \
116	} \
117	} \
118	} while (0)
119	#else
120	# define VMM_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = 0
121	# define VMM_CHECK_SMAP_CHECK(a_BadExpr) NOREF(fKernelFeatures)
122	# define VMM_CHECK_SMAP_CHECK2(a_pVM, a_BadExpr) NOREF(fKernelFeatures)
123	#endif
124
125
126	/*********************************************************************************************************************************
127	* Internal Functions *
128	*********************************************************************************************************************************/
129	RT_C_DECLS_BEGIN
130	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
131	extern uint64_t __udivdi3(uint64_t, uint64_t);
132	extern uint64_t __umoddi3(uint64_t, uint64_t);
133	#endif
134	RT_C_DECLS_END
135
136
137	/*********************************************************************************************************************************
138	* Global Variables *
139	*********************************************************************************************************************************/
140	/** Drag in necessary library bits.
141	* The runtime lives here (in VMMR0.r0) and VBoxDDR0.r0 links against us. /
142	PFNRT g_VMMR0Deps[] =
143	{
144	(PFNRT)RTCrc32,
145	(PFNRT)RTOnce,
146	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
147	(PFNRT)__udivdi3,
148	(PFNRT)__umoddi3,
149	#endif
150	NULL
151	};
152
153	#ifdef RT_OS_SOLARIS
154	/* Dependency information for the native solaris loader. */
155	extern "C" { char _depends_on[] = "vboxdrv"; }
156	#endif
157
158	/** The result of SUPR0GetRawModeUsability(), set by ModuleInit(). */
159	int g_rcRawModeUsability = VINF_SUCCESS;
160
161
162	/**
163	* Initialize the module.
164	* This is called when we're first loaded.
165	*
166	* @returns 0 on success.
167	* @returns VBox status on failure.
168	* @param hMod Image handle for use in APIs.
169	*/
170	DECLEXPORT(int) ModuleInit(void *hMod)
171	{
172	VMM_CHECK_SMAP_SETUP();
173	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
174
175	#ifdef VBOX_WITH_DTRACE_R0
176	/*
177	* The first thing to do is register the static tracepoints.
178	* (Deregistration is automatic.)
179	*/
180	int rc2 = SUPR0TracerRegisterModule(hMod, &g_VTGObjHeader);
181	if (RT_FAILURE(rc2))
182	return rc2;
183	#endif
184	LogFlow(("ModuleInit:\n"));
185
186	#ifdef VBOX_WITH_64ON32_CMOS_DEBUG
187	/*
188	* Display the CMOS debug code.
189	*/
190	ASMOutU8(0x72, 0x03);
191	uint8_t bDebugCode = ASMInU8(0x73);
192	LogRel(("CMOS Debug Code: %#x (%d)\n", bDebugCode, bDebugCode));
193	RTLogComPrintf("CMOS Debug Code: %#x (%d)\n", bDebugCode, bDebugCode);
194	#endif
195
196	/*
197	* Initialize the VMM, GVMM, GMM, HM, PGM (Darwin) and INTNET.
198	*/
199	int rc = vmmInitFormatTypes();
200	if (RT_SUCCESS(rc))
201	{
202	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
203	rc = GVMMR0Init();
204	if (RT_SUCCESS(rc))
205	{
206	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
207	rc = GMMR0Init();
208	if (RT_SUCCESS(rc))
209	{
210	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
211	rc = HMR0Init();
212	if (RT_SUCCESS(rc))
213	{
214	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
215	rc = PGMRegisterStringFormatTypes();
216	if (RT_SUCCESS(rc))
217	{
218	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
219	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
220	rc = PGMR0DynMapInit();
221	#endif
222	if (RT_SUCCESS(rc))
223	{
224	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
225	rc = IntNetR0Init();
226	if (RT_SUCCESS(rc))
227	{
228	#ifdef VBOX_WITH_PCI_PASSTHROUGH
229	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
230	rc = PciRawR0Init();
231	#endif
232	if (RT_SUCCESS(rc))
233	{
234	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
235	rc = CPUMR0ModuleInit();
236	if (RT_SUCCESS(rc))
237	{
238	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
239	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
240	rc = vmmR0TripleFaultHackInit();
241	if (RT_SUCCESS(rc))
242	#endif
243	{
244	VMM_CHECK_SMAP_CHECK(rc = VERR_VMM_SMAP_BUT_AC_CLEAR);
245	if (RT_SUCCESS(rc))
246	{
247	g_rcRawModeUsability = SUPR0GetRawModeUsability();
248	if (g_rcRawModeUsability != VINF_SUCCESS)
249	SUPR0Printf("VMMR0!ModuleInit: SUPR0GetRawModeUsability -> %Rrc\n",
250	g_rcRawModeUsability);
251	LogFlow(("ModuleInit: returns success\n"));
252	return VINF_SUCCESS;
253	}
254	}
255
256	/*
257	* Bail out.
258	*/
259	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
260	vmmR0TripleFaultHackTerm();
261	#endif
262	}
263	else
264	LogRel(("ModuleInit: CPUMR0ModuleInit -> %Rrc\n", rc));
265	#ifdef VBOX_WITH_PCI_PASSTHROUGH
266	PciRawR0Term();
267	#endif
268	}
269	else
270	LogRel(("ModuleInit: PciRawR0Init -> %Rrc\n", rc));
271	IntNetR0Term();
272	}
273	else
274	LogRel(("ModuleInit: IntNetR0Init -> %Rrc\n", rc));
275	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
276	PGMR0DynMapTerm();
277	#endif
278	}
279	else
280	LogRel(("ModuleInit: PGMR0DynMapInit -> %Rrc\n", rc));
281	PGMDeregisterStringFormatTypes();
282	}
283	else
284	LogRel(("ModuleInit: PGMRegisterStringFormatTypes -> %Rrc\n", rc));
285	HMR0Term();
286	}
287	else
288	LogRel(("ModuleInit: HMR0Init -> %Rrc\n", rc));
289	GMMR0Term();
290	}
291	else
292	LogRel(("ModuleInit: GMMR0Init -> %Rrc\n", rc));
293	GVMMR0Term();
294	}
295	else
296	LogRel(("ModuleInit: GVMMR0Init -> %Rrc\n", rc));
297	vmmTermFormatTypes();
298	}
299	else
300	LogRel(("ModuleInit: vmmInitFormatTypes -> %Rrc\n", rc));
301
302	LogFlow(("ModuleInit: failed %Rrc\n", rc));
303	return rc;
304	}
305
306
307	/**
308	* Terminate the module.
309	* This is called when we're finally unloaded.
310	*
311	* @param hMod Image handle for use in APIs.
312	*/
313	DECLEXPORT(void) ModuleTerm(void *hMod)
314	{
315	NOREF(hMod);
316	LogFlow(("ModuleTerm:\n"));
317
318	/*
319	* Terminate the CPUM module (Local APIC cleanup).
320	*/
321	CPUMR0ModuleTerm();
322
323	/*
324	* Terminate the internal network service.
325	*/
326	IntNetR0Term();
327
328	/*
329	* PGM (Darwin), HM and PciRaw global cleanup.
330	*/
331	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
332	PGMR0DynMapTerm();
333	#endif
334	#ifdef VBOX_WITH_PCI_PASSTHROUGH
335	PciRawR0Term();
336	#endif
337	PGMDeregisterStringFormatTypes();
338	HMR0Term();
339	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
340	vmmR0TripleFaultHackTerm();
341	#endif
342
343	/*
344	* Destroy the GMM and GVMM instances.
345	*/
346	GMMR0Term();
347	GVMMR0Term();
348
349	vmmTermFormatTypes();
350
351	LogFlow(("ModuleTerm: returns\n"));
352	}
353
354
355	/**
356	* Initiates the R0 driver for a particular VM instance.
357	*
358	* @returns VBox status code.
359	*
360	* @param pGVM The global (ring-0) VM structure.
361	* @param pVM The cross context VM structure.
362	* @param uSvnRev The SVN revision of the ring-3 part.
363	* @param uBuildType Build type indicator.
364	* @thread EMT(0)
365	*/
366	static int vmmR0InitVM(PGVM pGVM, PVM pVM, uint32_t uSvnRev, uint32_t uBuildType)
367	{
368	VMM_CHECK_SMAP_SETUP();
369	VMM_CHECK_SMAP_CHECK(return VERR_VMM_SMAP_BUT_AC_CLEAR);
370
371	/*
372	* Match the SVN revisions and build type.
373	*/
374	if (uSvnRev != VMMGetSvnRev())
375	{
376	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
377	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
378	return VERR_VMM_R0_VERSION_MISMATCH;
379	}
380	if (uBuildType != vmmGetBuildType())
381	{
382	LogRel(("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType()));
383	SUPR0Printf("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType());
384	return VERR_VMM_R0_VERSION_MISMATCH;
385	}
386
387	int rc = GVMMR0ValidateGVMandVMandEMT(pGVM, pVM, 0 /idCpu/);
388	if (RT_FAILURE(rc))
389	return rc;
390
391
392	#ifdef LOG_ENABLED
393	/*
394	* Register the EMT R0 logger instance for VCPU 0.
395	*/
396	PVMCPU pVCpu = &pVM->aCpus[0];
397
398	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
399	if (pR0Logger)
400	{
401	# if 0 /* testing of the logger. */
402	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
403	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
404	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
405	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
406
407	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
408	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
409	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
410	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
411
412	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
413	LogCom(("vmmR0InitVM: returned successfully from direct logger call.\n"));
414	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
415	LogCom(("vmmR0InitVM: returned successfully from direct flush call.\n"));
416
417	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
418	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
419	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
420	LogCom(("vmmR0InitVM: returned successfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
421	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
422	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
423
424	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
425	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
426
427	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
428	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
429	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
430	# endif
431	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
432	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
433	pR0Logger->fRegistered = true;
434	}
435	#endif /* LOG_ENABLED */
436
437	/*
438	* Check if the host supports high resolution timers or not.
439	*/
440	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
441	&& !RTTimerCanDoHighResolution())
442	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
443
444	/*
445	* Initialize the per VM data for GVMM and GMM.
446	*/
447	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
448	rc = GVMMR0InitVM(pGVM);
449	// if (RT_SUCCESS(rc))
450	// rc = GMMR0InitPerVMData(pVM);
451	if (RT_SUCCESS(rc))
452	{
453	/*
454	* Init HM, CPUM and PGM (Darwin only).
455	*/
456	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
457	rc = HMR0InitVM(pVM);
458	if (RT_SUCCESS(rc))
459	VMM_CHECK_SMAP_CHECK2(pVM, rc = VERR_VMM_RING0_ASSERTION); /* CPUR0InitVM will otherwise panic the host */
460	if (RT_SUCCESS(rc))
461	{
462	rc = CPUMR0InitVM(pVM);
463	if (RT_SUCCESS(rc))
464	{
465	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
466	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
467	rc = PGMR0DynMapInitVM(pVM);
468	#endif
469	if (RT_SUCCESS(rc))
470	{
471	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
472	#ifdef VBOX_WITH_PCI_PASSTHROUGH
473	rc = PciRawR0InitVM(pGVM, pVM);
474	#endif
475	if (RT_SUCCESS(rc))
476	{
477	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
478	rc = GIMR0InitVM(pVM);
479	if (RT_SUCCESS(rc))
480	{
481	VMM_CHECK_SMAP_CHECK2(pVM, rc = VERR_VMM_RING0_ASSERTION);
482	if (RT_SUCCESS(rc))
483	{
484	GVMMR0DoneInitVM(pGVM);
485	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
486	return rc;
487	}
488
489	/* bail out*/
490	GIMR0TermVM(pVM);
491	}
492	#ifdef VBOX_WITH_PCI_PASSTHROUGH
493	PciRawR0TermVM(pGVM, pVM);
494	#endif
495	}
496	}
497	}
498	HMR0TermVM(pVM);
499	}
500	}
501
502	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
503	return rc;
504	}
505
506
507	/**
508	* Does EMT specific VM initialization.
509	*
510	* @returns VBox status code.
511	* @param pGVM The ring-0 VM structure.
512	* @param pVM The cross context VM structure.
513	* @param idCpu The EMT that's calling.
514	*/
515	static int vmmR0InitVMEmt(PGVM pGVM, PVM pVM, VMCPUID idCpu)
516	{
517	/* Paranoia (caller checked these already). */
518	AssertReturn(idCpu < pGVM->cCpus, VERR_INVALID_CPU_ID);
519	AssertReturn(pGVM->aCpus[idCpu].hEMT == RTThreadNativeSelf(), VERR_INVALID_CPU_ID);
520
521	#ifdef LOG_ENABLED
522	/*
523	* Registration of ring 0 loggers.
524	*/
525	PVMCPU pVCpu = &pVM->aCpus[idCpu];
526	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
527	if ( pR0Logger
528	&& !pR0Logger->fRegistered)
529	{
530	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
531	pR0Logger->fRegistered = true;
532	}
533	#endif
534	RT_NOREF(pVM);
535
536	return VINF_SUCCESS;
537	}
538
539
540
541	/**
542	* Terminates the R0 bits for a particular VM instance.
543	*
544	* This is normally called by ring-3 as part of the VM termination process, but
545	* may alternatively be called during the support driver session cleanup when
546	* the VM object is destroyed (see GVMM).
547	*
548	* @returns VBox status code.
549	*
550	* @param pGVM The global (ring-0) VM structure.
551	* @param pVM The cross context VM structure.
552	* @param idCpu Set to 0 if EMT(0) or NIL_VMCPUID if session cleanup
553	* thread.
554	* @thread EMT(0) or session clean up thread.
555	*/
556	VMMR0_INT_DECL(int) VMMR0TermVM(PGVM pGVM, PVM pVM, VMCPUID idCpu)
557	{
558	/*
559	* Check EMT(0) claim if we're called from userland.
560	*/
561	if (idCpu != NIL_VMCPUID)
562	{
563	AssertReturn(idCpu == 0, VERR_INVALID_CPU_ID);
564	int rc = GVMMR0ValidateGVMandVMandEMT(pGVM, pVM, idCpu);
565	if (RT_FAILURE(rc))
566	return rc;
567	}
568
569	#ifdef VBOX_WITH_PCI_PASSTHROUGH
570	PciRawR0TermVM(pGVM, pVM);
571	#endif
572
573	/*
574	* Tell GVMM what we're up to and check that we only do this once.
575	*/
576	if (GVMMR0DoingTermVM(pGVM))
577	{
578	GIMR0TermVM(pVM);
579
580	/** @todo I wish to call PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu])
581	* here to make sure we don't leak any shared pages if we crash... */
582	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
583	PGMR0DynMapTermVM(pVM);
584	#endif
585	HMR0TermVM(pVM);
586	}
587
588	/*
589	* Deregister the logger.
590	*/
591	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
592	return VINF_SUCCESS;
593	}
594
595
596	/**
597	* VMM ring-0 thread-context callback.
598	*
599	* This does common HM state updating and calls the HM-specific thread-context
600	* callback.
601	*
602	* @param enmEvent The thread-context event.
603	* @param pvUser Opaque pointer to the VMCPU.
604	*
605	* @thread EMT(pvUser)
606	*/
607	static DECLCALLBACK(void) vmmR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, void *pvUser)
608	{
609	PVMCPU pVCpu = (PVMCPU)pvUser;
610
611	switch (enmEvent)
612	{
613	case RTTHREADCTXEVENT_IN:
614	{
615	/*
616	* Linux may call us with preemption enabled (really!) but technically we
617	* cannot get preempted here, otherwise we end up in an infinite recursion
618	* scenario (i.e. preempted in resume hook -> preempt hook -> resume hook...
619	* ad infinitum). Let's just disable preemption for now...
620	*/
621	/** @todo r=bird: I don't believe the above. The linux code is clearly enabling
622	* preemption after doing the callout (one or two functions up the
623	* call chain). */
624	/** @todo r=ramshankar: See @bugref{5313#c30}. */
625	RTTHREADPREEMPTSTATE ParanoidPreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
626	RTThreadPreemptDisable(&ParanoidPreemptState);
627
628	/* We need to update the VCPU <-> host CPU mapping. */
629	RTCPUID idHostCpu;
630	uint32_t iHostCpuSet = RTMpCurSetIndexAndId(&idHostCpu);
631	pVCpu->iHostCpuSet = iHostCpuSet;
632	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
633
634	/* In the very unlikely event that the GIP delta for the CPU we're
635	rescheduled needs calculating, try force a return to ring-3.
636	We unfortunately cannot do the measurements right here. */
637	if (RT_UNLIKELY(SUPIsTscDeltaAvailableForCpuSetIndex(iHostCpuSet)))
638	VMCPU_FF_SET(pVCpu, VMCPU_FF_TO_R3);
639
640	/* Invoke the HM-specific thread-context callback. */
641	HMR0ThreadCtxCallback(enmEvent, pvUser);
642
643	/* Restore preemption. */
644	RTThreadPreemptRestore(&ParanoidPreemptState);
645	break;
646	}
647
648	case RTTHREADCTXEVENT_OUT:
649	{
650	/* Invoke the HM-specific thread-context callback. */
651	HMR0ThreadCtxCallback(enmEvent, pvUser);
652
653	/*
654	* Sigh. See VMMGetCpu() used by VMCPU_ASSERT_EMT(). We cannot let several VCPUs
655	* have the same host CPU associated with it.
656	*/
657	pVCpu->iHostCpuSet = UINT32_MAX;
658	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
659	break;
660	}
661
662	default:
663	/* Invoke the HM-specific thread-context callback. */
664	HMR0ThreadCtxCallback(enmEvent, pvUser);
665	break;
666	}
667	}
668
669
670	/**
671	* Creates thread switching hook for the current EMT thread.
672	*
673	* This is called by GVMMR0CreateVM and GVMMR0RegisterVCpu. If the host
674	* platform does not implement switcher hooks, no hooks will be create and the
675	* member set to NIL_RTTHREADCTXHOOK.
676	*
677	* @returns VBox status code.
678	* @param pVCpu The cross context virtual CPU structure.
679	* @thread EMT(pVCpu)
680	*/
681	VMMR0_INT_DECL(int) VMMR0ThreadCtxHookCreateForEmt(PVMCPU pVCpu)
682	{
683	VMCPU_ASSERT_EMT(pVCpu);
684	Assert(pVCpu->vmm.s.hCtxHook == NIL_RTTHREADCTXHOOK);
685
686	#if 1 /* To disable this stuff change to zero. */
687	int rc = RTThreadCtxHookCreate(&pVCpu->vmm.s.hCtxHook, 0, vmmR0ThreadCtxCallback, pVCpu);
688	if (RT_SUCCESS(rc))
689	return rc;
690	#else
691	RT_NOREF(vmmR0ThreadCtxCallback);
692	int rc = VERR_NOT_SUPPORTED;
693	#endif
694
695	pVCpu->vmm.s.hCtxHook = NIL_RTTHREADCTXHOOK;
696	if (rc == VERR_NOT_SUPPORTED)
697	return VINF_SUCCESS;
698
699	LogRelMax(32, ("RTThreadCtxHookCreate failed! rc=%Rrc pVCpu=%p idCpu=%RU32\n", rc, pVCpu, pVCpu->idCpu));
700	return VINF_SUCCESS; /* Just ignore it, we can live without context hooks. */
701	}
702
703
704	/**
705	* Destroys the thread switching hook for the specified VCPU.
706	*
707	* @param pVCpu The cross context virtual CPU structure.
708	* @remarks Can be called from any thread.
709	*/
710	VMMR0_INT_DECL(void) VMMR0ThreadCtxHookDestroyForEmt(PVMCPU pVCpu)
711	{
712	int rc = RTThreadCtxHookDestroy(pVCpu->vmm.s.hCtxHook);
713	AssertRC(rc);
714	pVCpu->vmm.s.hCtxHook = NIL_RTTHREADCTXHOOK;
715	}
716
717
718	/**
719	* Disables the thread switching hook for this VCPU (if we got one).
720	*
721	* @param pVCpu The cross context virtual CPU structure.
722	* @thread EMT(pVCpu)
723	*
724	* @remarks This also clears VMCPU::idHostCpu, so the mapping is invalid after
725	* this call. This means you have to be careful with what you do!
726	*/
727	VMMR0_INT_DECL(void) VMMR0ThreadCtxHookDisable(PVMCPU pVCpu)
728	{
729	/*
730	* Clear the VCPU <-> host CPU mapping as we've left HM context.
731	* @bugref{7726#c19} explains the need for this trick:
732	*
733	* hmR0VmxCallRing3Callback/hmR0SvmCallRing3Callback &
734	* hmR0VmxLeaveSession/hmR0SvmLeaveSession disables context hooks during
735	* longjmp & normal return to ring-3, which opens a window where we may be
736	* rescheduled without changing VMCPUID::idHostCpu and cause confusion if
737	* the CPU starts executing a different EMT. Both functions first disables
738	* preemption and then calls HMR0LeaveCpu which invalids idHostCpu, leaving
739	* an opening for getting preempted.
740	*/
741	/** @todo Make HM not need this API! Then we could leave the hooks enabled
742	* all the time. */
743	/** @todo move this into the context hook disabling if(). */
744	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
745
746	/*
747	* Disable the context hook, if we got one.
748	*/
749	if (pVCpu->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
750	{
751	Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
752	int rc = RTThreadCtxHookDisable(pVCpu->vmm.s.hCtxHook);
753	AssertRC(rc);
754	}
755	}
756
757
758	/**
759	* Internal version of VMMR0ThreadCtxHooksAreRegistered.
760	*
761	* @returns true if registered, false otherwise.
762	* @param pVCpu The cross context virtual CPU structure.
763	*/
764	DECLINLINE(bool) vmmR0ThreadCtxHookIsEnabled(PVMCPU pVCpu)
765	{
766	return RTThreadCtxHookIsEnabled(pVCpu->vmm.s.hCtxHook);
767	}
768
769
770	/**
771	* Whether thread-context hooks are registered for this VCPU.
772	*
773	* @returns true if registered, false otherwise.
774	* @param pVCpu The cross context virtual CPU structure.
775	*/
776	VMMR0_INT_DECL(bool) VMMR0ThreadCtxHookIsEnabled(PVMCPU pVCpu)
777	{
778	return vmmR0ThreadCtxHookIsEnabled(pVCpu);
779	}
780
781
782	#ifdef VBOX_WITH_STATISTICS
783	/**
784	* Record return code statistics
785	* @param pVM The cross context VM structure.
786	* @param pVCpu The cross context virtual CPU structure.
787	* @param rc The status code.
788	*/
789	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
790	{
791	/*
792	* Collect statistics.
793	*/
794	switch (rc)
795	{
796	case VINF_SUCCESS:
797	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
798	break;
799	case VINF_EM_RAW_INTERRUPT:
800	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
801	break;
802	case VINF_EM_RAW_INTERRUPT_HYPER:
803	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
804	break;
805	case VINF_EM_RAW_GUEST_TRAP:
806	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
807	break;
808	case VINF_EM_RAW_RING_SWITCH:
809	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
810	break;
811	case VINF_EM_RAW_RING_SWITCH_INT:
812	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
813	break;
814	case VINF_EM_RAW_STALE_SELECTOR:
815	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
816	break;
817	case VINF_EM_RAW_IRET_TRAP:
818	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
819	break;
820	case VINF_IOM_R3_IOPORT_READ:
821	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
822	break;
823	case VINF_IOM_R3_IOPORT_WRITE:
824	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
825	break;
826	case VINF_IOM_R3_IOPORT_COMMIT_WRITE:
827	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOCommitWrite);
828	break;
829	case VINF_IOM_R3_MMIO_READ:
830	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
831	break;
832	case VINF_IOM_R3_MMIO_WRITE:
833	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
834	break;
835	case VINF_IOM_R3_MMIO_COMMIT_WRITE:
836	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOCommitWrite);
837	break;
838	case VINF_IOM_R3_MMIO_READ_WRITE:
839	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
840	break;
841	case VINF_PATM_HC_MMIO_PATCH_READ:
842	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
843	break;
844	case VINF_PATM_HC_MMIO_PATCH_WRITE:
845	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
846	break;
847	case VINF_CPUM_R3_MSR_READ:
848	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMSRRead);
849	break;
850	case VINF_CPUM_R3_MSR_WRITE:
851	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMSRWrite);
852	break;
853	case VINF_EM_RAW_EMULATE_INSTR:
854	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
855	break;
856	case VINF_EM_RAW_EMULATE_IO_BLOCK:
857	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
858	break;
859	case VINF_PATCH_EMULATE_INSTR:
860	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
861	break;
862	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
863	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
864	break;
865	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
866	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
867	break;
868	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
869	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
870	break;
871	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
872	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
873	break;
874	case VINF_CSAM_PENDING_ACTION:
875	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
876	break;
877	case VINF_PGM_SYNC_CR3:
878	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
879	break;
880	case VINF_PATM_PATCH_INT3:
881	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
882	break;
883	case VINF_PATM_PATCH_TRAP_PF:
884	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
885	break;
886	case VINF_PATM_PATCH_TRAP_GP:
887	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
888	break;
889	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
890	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
891	break;
892	case VINF_EM_RESCHEDULE_REM:
893	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
894	break;
895	case VINF_EM_RAW_TO_R3:
896	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Total);
897	if (VM_FF_IS_PENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
898	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
899	else if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
900	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
901	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_QUEUES))
902	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
903	else if (VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS))
904	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
905	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
906	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
907	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TIMER))
908	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
909	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
910	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
911	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TO_R3))
912	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3FF);
913	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_IEM))
914	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Iem);
915	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_IOM))
916	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Iom);
917	else
918	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
919	break;
920
921	case VINF_EM_RAW_TIMER_PENDING:
922	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
923	break;
924	case VINF_EM_RAW_INTERRUPT_PENDING:
925	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
926	break;
927	case VINF_VMM_CALL_HOST:
928	switch (pVCpu->vmm.s.enmCallRing3Operation)
929	{
930	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
931	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
932	break;
933	case VMMCALLRING3_PDM_LOCK:
934	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
935	break;
936	case VMMCALLRING3_PGM_POOL_GROW:
937	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
938	break;
939	case VMMCALLRING3_PGM_LOCK:
940	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
941	break;
942	case VMMCALLRING3_PGM_MAP_CHUNK:
943	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
944	break;
945	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
946	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
947	break;
948	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
949	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
950	break;
951	case VMMCALLRING3_VMM_LOGGER_FLUSH:
952	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
953	break;
954	case VMMCALLRING3_VM_SET_ERROR:
955	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
956	break;
957	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
958	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
959	break;
960	case VMMCALLRING3_VM_R0_ASSERTION:
961	default:
962	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
963	break;
964	}
965	break;
966	case VINF_PATM_DUPLICATE_FUNCTION:
967	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
968	break;
969	case VINF_PGM_CHANGE_MODE:
970	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
971	break;
972	case VINF_PGM_POOL_FLUSH_PENDING:
973	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
974	break;
975	case VINF_EM_PENDING_REQUEST:
976	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
977	break;
978	case VINF_EM_HM_PATCH_TPR_INSTR:
979	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
980	break;
981	default:
982	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
983	break;
984	}
985	}
986	#endif /* VBOX_WITH_STATISTICS */
987
988
989	/**
990	* The Ring 0 entry point, called by the fast-ioctl path.
991	*
992	* @param pGVM The global (ring-0) VM structure.
993	* @param pVM The cross context VM structure.
994	* The return code is stored in pVM->vmm.s.iLastGZRc.
995	* @param idCpu The Virtual CPU ID of the calling EMT.
996	* @param enmOperation Which operation to execute.
997	* @remarks Assume called with interrupts _enabled_.
998	*/
999	VMMR0DECL(void) VMMR0EntryFast(PGVM pGVM, PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
1000	{
1001	/*
1002	* Validation.
1003	*/
1004	if ( idCpu < pGVM->cCpus
1005	&& pGVM->cCpus == pVM->cCpus)
1006	{ /likely/ }
1007	else
1008	{
1009	SUPR0Printf("VMMR0EntryFast: Bad idCpu=%#x cCpus=%#x/%#x\n", idCpu, pGVM->cCpus, pVM->cCpus);
1010	return;
1011	}
1012
1013	PGVMCPU pGVCpu = &pGVM->aCpus[idCpu];
1014	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1015	RTNATIVETHREAD const hNativeThread = RTThreadNativeSelf();
1016	if (RT_LIKELY( pGVCpu->hEMT == hNativeThread
1017	&& pVCpu->hNativeThreadR0 == hNativeThread))
1018	{ /* likely */ }
1019	else
1020	{
1021	SUPR0Printf("VMMR0EntryFast: Bad thread idCpu=%#x hNativeSelf=%p pGVCpu->hEmt=%p pVCpu->hNativeThreadR0=%p\n",
1022	idCpu, hNativeThread, pGVCpu->hEMT, pVCpu->hNativeThreadR0);
1023	return;
1024	}
1025
1026	/*
1027	* SMAP fun.
1028	*/
1029	VMM_CHECK_SMAP_SETUP();
1030	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1031
1032	/*
1033	* Perform requested operation.
1034	*/
1035	switch (enmOperation)
1036	{
1037	/*
1038	* Switch to GC and run guest raw mode code.
1039	* Disable interrupts before doing the world switch.
1040	*/
1041	case VMMR0_DO_RAW_RUN:
1042	{
1043	#ifdef VBOX_WITH_RAW_MODE
1044	# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1045	/* Some safety precautions first. */
1046	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
1047	{
1048	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
1049	break;
1050	}
1051	# endif
1052	if (RT_SUCCESS(g_rcRawModeUsability))
1053	{ /* likely */ }
1054	else
1055	{
1056	pVCpu->vmm.s.iLastGZRc = g_rcRawModeUsability;
1057	break;
1058	}
1059
1060	/*
1061	* Disable preemption.
1062	*/
1063	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
1064	RTThreadPreemptDisable(&PreemptState);
1065
1066	/*
1067	* Get the host CPU identifiers, make sure they are valid and that
1068	* we've got a TSC delta for the CPU.
1069	*/
1070	RTCPUID idHostCpu;
1071	uint32_t iHostCpuSet = RTMpCurSetIndexAndId(&idHostCpu);
1072	if (RT_LIKELY( iHostCpuSet < RTCPUSET_MAX_CPUS
1073	&& SUPIsTscDeltaAvailableForCpuSetIndex(iHostCpuSet)))
1074	{
1075	/*
1076	* Commit the CPU identifiers and update the periodict preemption timer if it's active.
1077	*/
1078	# ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1079	CPUMR0SetLApic(pVCpu, iHostCpuSet);
1080	# endif
1081	pVCpu->iHostCpuSet = iHostCpuSet;
1082	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
1083
1084	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
1085	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
1086
1087	/*
1088	* We might need to disable VT-x if the active switcher turns off paging.
1089	*/
1090	bool fVTxDisabled;
1091	int rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
1092	if (RT_SUCCESS(rc))
1093	{
1094	/*
1095	* Disable interrupts and run raw-mode code. The loop is for efficiently
1096	* dispatching tracepoints that fired in raw-mode context.
1097	*/
1098	RTCCUINTREG uFlags = ASMIntDisableFlags();
1099
1100	for (;;)
1101	{
1102	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
1103	TMNotifyStartOfExecution(pVCpu);
1104
1105	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
1106	pVCpu->vmm.s.iLastGZRc = rc;
1107
1108	TMNotifyEndOfExecution(pVCpu);
1109	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1110
1111	if (rc != VINF_VMM_CALL_TRACER)
1112	break;
1113	SUPR0TracerUmodProbeFire(pVM->pSession, &pVCpu->vmm.s.TracerCtx);
1114	}
1115
1116	/*
1117	* Re-enable VT-x before we dispatch any pending host interrupts and
1118	* re-enables interrupts.
1119	*/
1120	HMR0LeaveSwitcher(pVM, fVTxDisabled);
1121
1122	if ( rc == VINF_EM_RAW_INTERRUPT
1123	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
1124	TRPMR0DispatchHostInterrupt(pVM);
1125
1126	ASMSetFlags(uFlags);
1127
1128	/* Fire dtrace probe and collect statistics. */
1129	VBOXVMM_R0_VMM_RETURN_TO_RING3_RC(pVCpu, CPUMQueryGuestCtxPtr(pVCpu), rc);
1130	# ifdef VBOX_WITH_STATISTICS
1131	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
1132	vmmR0RecordRC(pVM, pVCpu, rc);
1133	# endif
1134	}
1135	else
1136	pVCpu->vmm.s.iLastGZRc = rc;
1137
1138	/*
1139	* Invalidate the host CPU identifiers as we restore preemption.
1140	*/
1141	pVCpu->iHostCpuSet = UINT32_MAX;
1142	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1143
1144	RTThreadPreemptRestore(&PreemptState);
1145	}
1146	/*
1147	* Invalid CPU set index or TSC delta in need of measuring.
1148	*/
1149	else
1150	{
1151	RTThreadPreemptRestore(&PreemptState);
1152	if (iHostCpuSet < RTCPUSET_MAX_CPUS)
1153	{
1154	int rc = SUPR0TscDeltaMeasureBySetIndex(pVM->pSession, iHostCpuSet, 0 /fFlags/,
1155	2 /cMsWaitRetry/, 5RT_MS_1SEC /cMsWaitThread*/,
1156	0 /default cTries/);
1157	if (RT_SUCCESS(rc) \|\| rc == VERR_CPU_OFFLINE)
1158	pVCpu->vmm.s.iLastGZRc = VINF_EM_RAW_TO_R3;
1159	else
1160	pVCpu->vmm.s.iLastGZRc = rc;
1161	}
1162	else
1163	pVCpu->vmm.s.iLastGZRc = VERR_INVALID_CPU_INDEX;
1164	}
1165
1166	#else /* !VBOX_WITH_RAW_MODE */
1167	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_NOT_SUPPORTED;
1168	#endif
1169	break;
1170	}
1171
1172	/*
1173	* Run guest code using the available hardware acceleration technology.
1174	*/
1175	case VMMR0_DO_HM_RUN:
1176	{
1177	/*
1178	* Disable preemption.
1179	*/
1180	Assert(!vmmR0ThreadCtxHookIsEnabled(pVCpu));
1181	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
1182	RTThreadPreemptDisable(&PreemptState);
1183
1184	/*
1185	* Get the host CPU identifiers, make sure they are valid and that
1186	* we've got a TSC delta for the CPU.
1187	*/
1188	RTCPUID idHostCpu;
1189	uint32_t iHostCpuSet = RTMpCurSetIndexAndId(&idHostCpu);
1190	if (RT_LIKELY( iHostCpuSet < RTCPUSET_MAX_CPUS
1191	&& SUPIsTscDeltaAvailableForCpuSetIndex(iHostCpuSet)))
1192	{
1193	pVCpu->iHostCpuSet = iHostCpuSet;
1194	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
1195
1196	/*
1197	* Update the periodic preemption timer if it's active.
1198	*/
1199	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
1200	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
1201	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1202
1203	#ifdef VMM_R0_TOUCH_FPU
1204	/*
1205	* Make sure we've got the FPU state loaded so and we don't need to clear
1206	* CR0.TS and get out of sync with the host kernel when loading the guest
1207	* FPU state. @ref sec_cpum_fpu (CPUM.cpp) and @bugref{4053}.
1208	*/
1209	CPUMR0TouchHostFpu();
1210	#endif
1211	int rc;
1212	bool fPreemptRestored = false;
1213	if (!HMR0SuspendPending())
1214	{
1215	/*
1216	* Enable the context switching hook.
1217	*/
1218	if (pVCpu->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
1219	{
1220	Assert(!RTThreadCtxHookIsEnabled(pVCpu->vmm.s.hCtxHook));
1221	int rc2 = RTThreadCtxHookEnable(pVCpu->vmm.s.hCtxHook); AssertRC(rc2);
1222	}
1223
1224	/*
1225	* Enter HM context.
1226	*/
1227	rc = HMR0Enter(pVM, pVCpu);
1228	if (RT_SUCCESS(rc))
1229	{
1230	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
1231
1232	/*
1233	* When preemption hooks are in place, enable preemption now that
1234	* we're in HM context.
1235	*/
1236	if (vmmR0ThreadCtxHookIsEnabled(pVCpu))
1237	{
1238	fPreemptRestored = true;
1239	RTThreadPreemptRestore(&PreemptState);
1240	}
1241
1242	/*
1243	* Setup the longjmp machinery and execute guest code (calls HMR0RunGuestCode).
1244	*/
1245	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1246	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HMR0RunGuestCode, pVM, pVCpu);
1247	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1248
1249	/*
1250	* Assert sanity on the way out. Using manual assertions code here as normal
1251	* assertions are going to panic the host since we're outside the setjmp/longjmp zone.
1252	*/
1253	if (RT_UNLIKELY( VMCPU_GET_STATE(pVCpu) != VMCPUSTATE_STARTED_HM
1254	&& RT_SUCCESS_NP(rc) && rc != VINF_VMM_CALL_HOST ))
1255	{
1256	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
1257	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
1258	"Got VMCPU state %d expected %d.\n", VMCPU_GET_STATE(pVCpu), VMCPUSTATE_STARTED_HM);
1259	rc = VERR_VMM_WRONG_HM_VMCPU_STATE;
1260	}
1261	/** @todo Get rid of this. HM shouldn't disable the context hook. */
1262	else if (RT_UNLIKELY(vmmR0ThreadCtxHookIsEnabled(pVCpu)))
1263	{
1264	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
1265	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
1266	"Thread-context hooks still enabled! VCPU=%p Id=%u rc=%d.\n", pVCpu, pVCpu->idCpu, rc);
1267	rc = VERR_INVALID_STATE;
1268	}
1269
1270	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1271	}
1272	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
1273
1274	/*
1275	* Invalidate the host CPU identifiers before we disable the context
1276	* hook / restore preemption.
1277	*/
1278	pVCpu->iHostCpuSet = UINT32_MAX;
1279	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1280
1281	/*
1282	* Disable context hooks. Due to unresolved cleanup issues, we
1283	* cannot leave the hooks enabled when we return to ring-3.
1284	*
1285	* Note! At the moment HM may also have disabled the hook
1286	* when we get here, but the IPRT API handles that.
1287	*/
1288	if (pVCpu->vmm.s.hCtxHook != NIL_RTTHREADCTXHOOK)
1289	{
1290	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1291	RTThreadCtxHookDisable(pVCpu->vmm.s.hCtxHook);
1292	}
1293	}
1294	/*
1295	* The system is about to go into suspend mode; go back to ring 3.
1296	*/
1297	else
1298	{
1299	rc = VINF_EM_RAW_INTERRUPT;
1300	pVCpu->iHostCpuSet = UINT32_MAX;
1301	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1302	}
1303
1304	/** @todo When HM stops messing with the context hook state, we'll disable
1305	* preemption again before the RTThreadCtxHookDisable call. */
1306	if (!fPreemptRestored)
1307	RTThreadPreemptRestore(&PreemptState);
1308
1309	pVCpu->vmm.s.iLastGZRc = rc;
1310
1311	/* Fire dtrace probe and collect statistics. */
1312	VBOXVMM_R0_VMM_RETURN_TO_RING3_HM(pVCpu, CPUMQueryGuestCtxPtr(pVCpu), rc);
1313	#ifdef VBOX_WITH_STATISTICS
1314	vmmR0RecordRC(pVM, pVCpu, rc);
1315	#endif
1316	}
1317	/*
1318	* Invalid CPU set index or TSC delta in need of measuring.
1319	*/
1320	else
1321	{
1322	pVCpu->iHostCpuSet = UINT32_MAX;
1323	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1324	RTThreadPreemptRestore(&PreemptState);
1325	if (iHostCpuSet < RTCPUSET_MAX_CPUS)
1326	{
1327	int rc = SUPR0TscDeltaMeasureBySetIndex(pVM->pSession, iHostCpuSet, 0 /fFlags/,
1328	2 /cMsWaitRetry/, 5RT_MS_1SEC /cMsWaitThread*/,
1329	0 /default cTries/);
1330	if (RT_SUCCESS(rc) \|\| rc == VERR_CPU_OFFLINE)
1331	pVCpu->vmm.s.iLastGZRc = VINF_EM_RAW_TO_R3;
1332	else
1333	pVCpu->vmm.s.iLastGZRc = rc;
1334	}
1335	else
1336	pVCpu->vmm.s.iLastGZRc = VERR_INVALID_CPU_INDEX;
1337	}
1338	break;
1339	}
1340
1341	#ifdef VBOX_WITH_NEM_R0
1342	# if defined(RT_ARCH_AMD64) && defined(RT_OS_WINDOWS)
1343	case VMMR0_DO_NEM_RUN:
1344	{
1345	/*
1346	* Setup the longjmp machinery and execute guest code (calls NEMR0RunGuestCode).
1347	*/
1348	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1349	int rc = vmmR0CallRing3SetJmp2(&pVCpu->vmm.s.CallRing3JmpBufR0, NEMR0RunGuestCode, pGVM, idCpu);
1350	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1351	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
1352
1353	pVCpu->vmm.s.iLastGZRc = rc;
1354
1355	/*
1356	* Fire dtrace probe and collect statistics.
1357	*/
1358	VBOXVMM_R0_VMM_RETURN_TO_RING3_NEM(pVCpu, CPUMQueryGuestCtxPtr(pVCpu), rc);
1359	# ifdef VBOX_WITH_STATISTICS
1360	vmmR0RecordRC(pVM, pVCpu, rc);
1361	# endif
1362	break;
1363	}
1364	# endif
1365	#endif
1366
1367
1368	/*
1369	* For profiling.
1370	*/
1371	case VMMR0_DO_NOP:
1372	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
1373	break;
1374
1375	/*
1376	* Shouldn't happen.
1377	*/
1378	default:
1379	AssertMsgFailed(("%#x\n", enmOperation));
1380	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
1381	break;
1382	}
1383	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1384	}
1385
1386
1387	/**
1388	* Validates a session or VM session argument.
1389	*
1390	* @returns true / false accordingly.
1391	* @param pVM The cross context VM structure.
1392	* @param pClaimedSession The session claim to validate.
1393	* @param pSession The session argument.
1394	*/
1395	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
1396	{
1397	/* This must be set! */
1398	if (!pSession)
1399	return false;
1400
1401	/* Only one out of the two. */
1402	if (pVM && pClaimedSession)
1403	return false;
1404	if (pVM)
1405	pClaimedSession = pVM->pSession;
1406	return pClaimedSession == pSession;
1407	}
1408
1409
1410	/**
1411	* VMMR0EntryEx worker function, either called directly or when ever possible
1412	* called thru a longjmp so we can exit safely on failure.
1413	*
1414	* @returns VBox status code.
1415	* @param pGVM The global (ring-0) VM structure.
1416	* @param pVM The cross context VM structure.
1417	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1418	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1419	* @param enmOperation Which operation to execute.
1420	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
1421	* The support driver validates this if it's present.
1422	* @param u64Arg Some simple constant argument.
1423	* @param pSession The session of the caller.
1424	*
1425	* @remarks Assume called with interrupts _enabled_.
1426	*/
1427	static int vmmR0EntryExWorker(PGVM pGVM, PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation,
1428	PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
1429	{
1430	/*
1431	* Validate pGVM, pVM and idCpu for consistency and validity.
1432	*/
1433	if ( pGVM != NULL
1434	\|\| pVM != NULL)
1435	{
1436	if (RT_LIKELY( RT_VALID_PTR(pGVM)
1437	&& RT_VALID_PTR(pVM)
1438	&& ((uintptr_t)pVM & PAGE_OFFSET_MASK) == 0))
1439	{ /* likely */ }
1440	else
1441	{
1442	SUPR0Printf("vmmR0EntryExWorker: Invalid pGVM=%p and/or pVM=%p! (op=%d)\n", pGVM, pVM, enmOperation);
1443	return VERR_INVALID_POINTER;
1444	}
1445
1446	if (RT_LIKELY(pGVM->pVM == pVM))
1447	{ /* likely */ }
1448	else
1449	{
1450	SUPR0Printf("vmmR0EntryExWorker: pVM mismatch: got %p, pGVM->pVM=%p\n", pVM, pGVM->pVM);
1451	return VERR_INVALID_PARAMETER;
1452	}
1453
1454	if (RT_LIKELY(idCpu == NIL_VMCPUID \|\| idCpu < pGVM->cCpus))
1455	{ /* likely */ }
1456	else
1457	{
1458	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu %#x (cCpus=%#x)\n", idCpu, pGVM->cCpus);
1459	return VERR_INVALID_PARAMETER;
1460	}
1461
1462	if (RT_LIKELY( pVM->enmVMState >= VMSTATE_CREATING
1463	&& pVM->enmVMState <= VMSTATE_TERMINATED
1464	&& pVM->cCpus == pGVM->cCpus
1465	&& pVM->pSession == pSession
1466	&& pVM->pVMR0 == pVM))
1467	{ /* likely */ }
1468	else
1469	{
1470	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{.enmVMState=%d, .cCpus=%#x(==%#x), .pSession=%p(==%p), .pVMR0=%p(==%p)}! (op=%d)\n",
1471	pVM, pVM->enmVMState, pVM->cCpus, pGVM->cCpus, pVM->pSession, pSession, pVM->pVMR0, pVM, enmOperation);
1472	return VERR_INVALID_POINTER;
1473	}
1474	}
1475	else if (RT_LIKELY(idCpu == NIL_VMCPUID))
1476	{ /* likely */ }
1477	else
1478	{
1479	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
1480	return VERR_INVALID_PARAMETER;
1481	}
1482
1483	/*
1484	* SMAP fun.
1485	*/
1486	VMM_CHECK_SMAP_SETUP();
1487	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
1488
1489	/*
1490	* Process the request.
1491	*/
1492	int rc;
1493	switch (enmOperation)
1494	{
1495	/*
1496	* GVM requests
1497	*/
1498	case VMMR0_DO_GVMM_CREATE_VM:
1499	if (pGVM == NULL && pVM == NULL && u64Arg == 0 && idCpu == NIL_VMCPUID)
1500	rc = GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr, pSession);
1501	else
1502	rc = VERR_INVALID_PARAMETER;
1503	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
1504	break;
1505
1506	case VMMR0_DO_GVMM_DESTROY_VM:
1507	if (pReqHdr == NULL && u64Arg == 0)
1508	rc = GVMMR0DestroyVM(pGVM, pVM);
1509	else
1510	rc = VERR_INVALID_PARAMETER;
1511	VMM_CHECK_SMAP_CHECK(RT_NOTHING);
1512	break;
1513
1514	case VMMR0_DO_GVMM_REGISTER_VMCPU:
1515	if (pGVM != NULL && pVM != NULL)
1516	rc = GVMMR0RegisterVCpu(pGVM, pVM, idCpu);
1517	else
1518	rc = VERR_INVALID_PARAMETER;
1519	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1520	break;
1521
1522	case VMMR0_DO_GVMM_DEREGISTER_VMCPU:
1523	if (pGVM != NULL && pVM != NULL)
1524	rc = GVMMR0DeregisterVCpu(pGVM, pVM, idCpu);
1525	else
1526	rc = VERR_INVALID_PARAMETER;
1527	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1528	break;
1529
1530	case VMMR0_DO_GVMM_SCHED_HALT:
1531	if (pReqHdr)
1532	return VERR_INVALID_PARAMETER;
1533	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1534	rc = GVMMR0SchedHalt(pGVM, pVM, idCpu, u64Arg);
1535	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1536	break;
1537
1538	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
1539	if (pReqHdr \|\| u64Arg)
1540	return VERR_INVALID_PARAMETER;
1541	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1542	rc = GVMMR0SchedWakeUp(pGVM, pVM, idCpu);
1543	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1544	break;
1545
1546	case VMMR0_DO_GVMM_SCHED_POKE:
1547	if (pReqHdr \|\| u64Arg)
1548	return VERR_INVALID_PARAMETER;
1549	rc = GVMMR0SchedPoke(pGVM, pVM, idCpu);
1550	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1551	break;
1552
1553	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
1554	if (u64Arg)
1555	return VERR_INVALID_PARAMETER;
1556	rc = GVMMR0SchedWakeUpAndPokeCpusReq(pGVM, pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
1557	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1558	break;
1559
1560	case VMMR0_DO_GVMM_SCHED_POLL:
1561	if (pReqHdr \|\| u64Arg > 1)
1562	return VERR_INVALID_PARAMETER;
1563	rc = GVMMR0SchedPoll(pGVM, pVM, idCpu, !!u64Arg);
1564	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1565	break;
1566
1567	case VMMR0_DO_GVMM_QUERY_STATISTICS:
1568	if (u64Arg)
1569	return VERR_INVALID_PARAMETER;
1570	rc = GVMMR0QueryStatisticsReq(pGVM, pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr, pSession);
1571	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1572	break;
1573
1574	case VMMR0_DO_GVMM_RESET_STATISTICS:
1575	if (u64Arg)
1576	return VERR_INVALID_PARAMETER;
1577	rc = GVMMR0ResetStatisticsReq(pGVM, pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr, pSession);
1578	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1579	break;
1580
1581	/*
1582	* Initialize the R0 part of a VM instance.
1583	*/
1584	case VMMR0_DO_VMMR0_INIT:
1585	rc = vmmR0InitVM(pGVM, pVM, RT_LODWORD(u64Arg), RT_HIDWORD(u64Arg));
1586	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1587	break;
1588
1589	/*
1590	* Does EMT specific ring-0 init.
1591	*/
1592	case VMMR0_DO_VMMR0_INIT_EMT:
1593	rc = vmmR0InitVMEmt(pGVM, pVM, idCpu);
1594	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1595	break;
1596
1597	/*
1598	* Terminate the R0 part of a VM instance.
1599	*/
1600	case VMMR0_DO_VMMR0_TERM:
1601	rc = VMMR0TermVM(pGVM, pVM, 0 /idCpu/);
1602	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1603	break;
1604
1605	/*
1606	* Attempt to enable hm mode and check the current setting.
1607	*/
1608	case VMMR0_DO_HM_ENABLE:
1609	rc = HMR0EnableAllCpus(pVM);
1610	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1611	break;
1612
1613	/*
1614	* Setup the hardware accelerated session.
1615	*/
1616	case VMMR0_DO_HM_SETUP_VM:
1617	rc = HMR0SetupVM(pVM);
1618	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1619	break;
1620
1621	/*
1622	* Switch to RC to execute Hypervisor function.
1623	*/
1624	case VMMR0_DO_CALL_HYPERVISOR:
1625	{
1626	#ifdef VBOX_WITH_RAW_MODE
1627	/*
1628	* Validate input / context.
1629	*/
1630	if (RT_UNLIKELY(idCpu != 0))
1631	return VERR_INVALID_CPU_ID;
1632	if (RT_UNLIKELY(pVM->cCpus != 1))
1633	return VERR_INVALID_PARAMETER;
1634	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1635	# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1636	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
1637	return VERR_PGM_NO_CR3_SHADOW_ROOT;
1638	# endif
1639	if (RT_FAILURE(g_rcRawModeUsability))
1640	return g_rcRawModeUsability;
1641
1642	/*
1643	* Disable interrupts.
1644	*/
1645	RTCCUINTREG fFlags = ASMIntDisableFlags();
1646
1647	/*
1648	* Get the host CPU identifiers, make sure they are valid and that
1649	* we've got a TSC delta for the CPU.
1650	*/
1651	RTCPUID idHostCpu;
1652	uint32_t iHostCpuSet = RTMpCurSetIndexAndId(&idHostCpu);
1653	if (RT_UNLIKELY(iHostCpuSet >= RTCPUSET_MAX_CPUS))
1654	{
1655	ASMSetFlags(fFlags);
1656	return VERR_INVALID_CPU_INDEX;
1657	}
1658	if (RT_UNLIKELY(!SUPIsTscDeltaAvailableForCpuSetIndex(iHostCpuSet)))
1659	{
1660	ASMSetFlags(fFlags);
1661	rc = SUPR0TscDeltaMeasureBySetIndex(pVM->pSession, iHostCpuSet, 0 /fFlags/,
1662	2 /cMsWaitRetry/, 5RT_MS_1SEC /cMsWaitThread*/,
1663	0 /default cTries/);
1664	if (RT_FAILURE(rc) && rc != VERR_CPU_OFFLINE)
1665	{
1666	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1667	return rc;
1668	}
1669	}
1670
1671	/*
1672	* Commit the CPU identifiers.
1673	*/
1674	# ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1675	CPUMR0SetLApic(pVCpu, iHostCpuSet);
1676	# endif
1677	pVCpu->iHostCpuSet = iHostCpuSet;
1678	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
1679
1680	/*
1681	* We might need to disable VT-x if the active switcher turns off paging.
1682	*/
1683	bool fVTxDisabled;
1684	rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
1685	if (RT_SUCCESS(rc))
1686	{
1687	/*
1688	* Go through the wormhole...
1689	*/
1690	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
1691
1692	/*
1693	* Re-enable VT-x before we dispatch any pending host interrupts.
1694	*/
1695	HMR0LeaveSwitcher(pVM, fVTxDisabled);
1696
1697	if ( rc == VINF_EM_RAW_INTERRUPT
1698	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
1699	TRPMR0DispatchHostInterrupt(pVM);
1700	}
1701
1702	/*
1703	* Invalidate the host CPU identifiers as we restore interrupts.
1704	*/
1705	pVCpu->iHostCpuSet = UINT32_MAX;
1706	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1707	ASMSetFlags(fFlags);
1708
1709	#else /* !VBOX_WITH_RAW_MODE */
1710	rc = VERR_RAW_MODE_NOT_SUPPORTED;
1711	#endif
1712	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1713	break;
1714	}
1715
1716	/*
1717	* PGM wrappers.
1718	*/
1719	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
1720	if (idCpu == NIL_VMCPUID)
1721	return VERR_INVALID_CPU_ID;
1722	rc = PGMR0PhysAllocateHandyPages(pGVM, pVM, idCpu);
1723	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1724	break;
1725
1726	case VMMR0_DO_PGM_FLUSH_HANDY_PAGES:
1727	if (idCpu == NIL_VMCPUID)
1728	return VERR_INVALID_CPU_ID;
1729	rc = PGMR0PhysFlushHandyPages(pGVM, pVM, idCpu);
1730	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1731	break;
1732
1733	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
1734	if (idCpu == NIL_VMCPUID)
1735	return VERR_INVALID_CPU_ID;
1736	rc = PGMR0PhysAllocateLargeHandyPage(pGVM, pVM, idCpu);
1737	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1738	break;
1739
1740	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
1741	if (idCpu != 0)
1742	return VERR_INVALID_CPU_ID;
1743	rc = PGMR0PhysSetupIoMmu(pGVM, pVM);
1744	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1745	break;
1746
1747	/*
1748	* GMM wrappers.
1749	*/
1750	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1751	if (u64Arg)
1752	return VERR_INVALID_PARAMETER;
1753	rc = GMMR0InitialReservationReq(pGVM, pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
1754	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1755	break;
1756
1757	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1758	if (u64Arg)
1759	return VERR_INVALID_PARAMETER;
1760	rc = GMMR0UpdateReservationReq(pGVM, pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
1761	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1762	break;
1763
1764	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1765	if (u64Arg)
1766	return VERR_INVALID_PARAMETER;
1767	rc = GMMR0AllocatePagesReq(pGVM, pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
1768	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1769	break;
1770
1771	case VMMR0_DO_GMM_FREE_PAGES:
1772	if (u64Arg)
1773	return VERR_INVALID_PARAMETER;
1774	rc = GMMR0FreePagesReq(pGVM, pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1775	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1776	break;
1777
1778	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1779	if (u64Arg)
1780	return VERR_INVALID_PARAMETER;
1781	rc = GMMR0FreeLargePageReq(pGVM, pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1782	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1783	break;
1784
1785	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1786	if (u64Arg)
1787	return VERR_INVALID_PARAMETER;
1788	rc = GMMR0QueryHypervisorMemoryStatsReq((PGMMMEMSTATSREQ)pReqHdr);
1789	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1790	break;
1791
1792	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1793	if (idCpu == NIL_VMCPUID)
1794	return VERR_INVALID_CPU_ID;
1795	if (u64Arg)
1796	return VERR_INVALID_PARAMETER;
1797	rc = GMMR0QueryMemoryStatsReq(pGVM, pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1798	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1799	break;
1800
1801	case VMMR0_DO_GMM_BALLOONED_PAGES:
1802	if (u64Arg)
1803	return VERR_INVALID_PARAMETER;
1804	rc = GMMR0BalloonedPagesReq(pGVM, pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1805	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1806	break;
1807
1808	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1809	if (u64Arg)
1810	return VERR_INVALID_PARAMETER;
1811	rc = GMMR0MapUnmapChunkReq(pGVM, pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1812	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1813	break;
1814
1815	case VMMR0_DO_GMM_SEED_CHUNK:
1816	if (pReqHdr)
1817	return VERR_INVALID_PARAMETER;
1818	rc = GMMR0SeedChunk(pGVM, pVM, idCpu, (RTR3PTR)u64Arg);
1819	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1820	break;
1821
1822	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1823	if (idCpu == NIL_VMCPUID)
1824	return VERR_INVALID_CPU_ID;
1825	if (u64Arg)
1826	return VERR_INVALID_PARAMETER;
1827	rc = GMMR0RegisterSharedModuleReq(pGVM, pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1828	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1829	break;
1830
1831	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1832	if (idCpu == NIL_VMCPUID)
1833	return VERR_INVALID_CPU_ID;
1834	if (u64Arg)
1835	return VERR_INVALID_PARAMETER;
1836	rc = GMMR0UnregisterSharedModuleReq(pGVM, pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1837	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1838	break;
1839
1840	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1841	if (idCpu == NIL_VMCPUID)
1842	return VERR_INVALID_CPU_ID;
1843	if ( u64Arg
1844	\|\| pReqHdr)
1845	return VERR_INVALID_PARAMETER;
1846	rc = GMMR0ResetSharedModules(pGVM, pVM, idCpu);
1847	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1848	break;
1849
1850	#ifdef VBOX_WITH_PAGE_SHARING
1851	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1852	{
1853	if (idCpu == NIL_VMCPUID)
1854	return VERR_INVALID_CPU_ID;
1855	if ( u64Arg
1856	\|\| pReqHdr)
1857	return VERR_INVALID_PARAMETER;
1858	rc = GMMR0CheckSharedModules(pGVM, pVM, idCpu);
1859	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1860	break;
1861	}
1862	#endif
1863
1864	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1865	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1866	if (u64Arg)
1867	return VERR_INVALID_PARAMETER;
1868	rc = GMMR0FindDuplicatePageReq(pGVM, pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1869	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1870	break;
1871	#endif
1872
1873	case VMMR0_DO_GMM_QUERY_STATISTICS:
1874	if (u64Arg)
1875	return VERR_INVALID_PARAMETER;
1876	rc = GMMR0QueryStatisticsReq(pGVM, pVM, (PGMMQUERYSTATISTICSSREQ)pReqHdr);
1877	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1878	break;
1879
1880	case VMMR0_DO_GMM_RESET_STATISTICS:
1881	if (u64Arg)
1882	return VERR_INVALID_PARAMETER;
1883	rc = GMMR0ResetStatisticsReq(pGVM, pVM, (PGMMRESETSTATISTICSSREQ)pReqHdr);
1884	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1885	break;
1886
1887	/*
1888	* A quick GCFGM mock-up.
1889	*/
1890	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1891	case VMMR0_DO_GCFGM_SET_VALUE:
1892	case VMMR0_DO_GCFGM_QUERY_VALUE:
1893	{
1894	if (pGVM \|\| pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1895	return VERR_INVALID_PARAMETER;
1896	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1897	if (pReq->Hdr.cbReq != sizeof(*pReq))
1898	return VERR_INVALID_PARAMETER;
1899	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1900	{
1901	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1902	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1903	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1904	}
1905	else
1906	{
1907	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1908	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1909	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1910	}
1911	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1912	break;
1913	}
1914
1915	/*
1916	* PDM Wrappers.
1917	*/
1918	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1919	{
1920	if (!pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1921	return VERR_INVALID_PARAMETER;
1922	rc = PDMR0DriverCallReqHandler(pGVM, pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1923	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1924	break;
1925	}
1926
1927	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1928	{
1929	if (!pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1930	return VERR_INVALID_PARAMETER;
1931	rc = PDMR0DeviceCallReqHandler(pGVM, pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1932	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1933	break;
1934	}
1935
1936	/*
1937	* Requests to the internal networking service.
1938	*/
1939	case VMMR0_DO_INTNET_OPEN:
1940	{
1941	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1942	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1943	return VERR_INVALID_PARAMETER;
1944	rc = IntNetR0OpenReq(pSession, pReq);
1945	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1946	break;
1947	}
1948
1949	case VMMR0_DO_INTNET_IF_CLOSE:
1950	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1951	return VERR_INVALID_PARAMETER;
1952	rc = IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1953	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1954	break;
1955
1956
1957	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1958	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1959	return VERR_INVALID_PARAMETER;
1960	rc = IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1961	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1962	break;
1963
1964	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1965	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1966	return VERR_INVALID_PARAMETER;
1967	rc = IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1968	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1969	break;
1970
1971	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1972	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1973	return VERR_INVALID_PARAMETER;
1974	rc = IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1975	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1976	break;
1977
1978	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1979	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1980	return VERR_INVALID_PARAMETER;
1981	rc = IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1982	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1983	break;
1984
1985	case VMMR0_DO_INTNET_IF_SEND:
1986	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1987	return VERR_INVALID_PARAMETER;
1988	rc = IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1989	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1990	break;
1991
1992	case VMMR0_DO_INTNET_IF_WAIT:
1993	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1994	return VERR_INVALID_PARAMETER;
1995	rc = IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1996	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
1997	break;
1998
1999	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
2000	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2001	return VERR_INVALID_PARAMETER;
2002	rc = IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
2003	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2004	break;
2005
2006	#ifdef VBOX_WITH_PCI_PASSTHROUGH
2007	/*
2008	* Requests to host PCI driver service.
2009	*/
2010	case VMMR0_DO_PCIRAW_REQ:
2011	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
2012	return VERR_INVALID_PARAMETER;
2013	rc = PciRawR0ProcessReq(pGVM, pVM, pSession, (PPCIRAWSENDREQ)pReqHdr);
2014	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2015	break;
2016	#endif
2017
2018	/*
2019	* NEM requests.
2020	*/
2021	#ifdef VBOX_WITH_NEM_R0
2022	# if defined(RT_ARCH_AMD64) && defined(RT_OS_WINDOWS)
2023	case VMMR0_DO_NEM_INIT_VM:
2024	if (u64Arg \|\| pReqHdr \|\| idCpu != 0)
2025	return VERR_INVALID_PARAMETER;
2026	rc = NEMR0InitVM(pGVM, pVM);
2027	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2028	break;
2029
2030	case VMMR0_DO_NEM_INIT_VM_PART_2:
2031	if (u64Arg \|\| pReqHdr \|\| idCpu != 0)
2032	return VERR_INVALID_PARAMETER;
2033	rc = NEMR0InitVMPart2(pGVM, pVM);
2034	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2035	break;
2036
2037	case VMMR0_DO_NEM_MAP_PAGES:
2038	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2039	return VERR_INVALID_PARAMETER;
2040	rc = NEMR0MapPages(pGVM, pVM, idCpu);
2041	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2042	break;
2043
2044	case VMMR0_DO_NEM_UNMAP_PAGES:
2045	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2046	return VERR_INVALID_PARAMETER;
2047	rc = NEMR0UnmapPages(pGVM, pVM, idCpu);
2048	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2049	break;
2050
2051	case VMMR0_DO_NEM_EXPORT_STATE:
2052	if (u64Arg \|\| pReqHdr \|\| idCpu == NIL_VMCPUID)
2053	return VERR_INVALID_PARAMETER;
2054	rc = NEMR0ExportState(pGVM, pVM, idCpu);
2055	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2056	break;
2057
2058	case VMMR0_DO_NEM_IMPORT_STATE:
2059	if (pReqHdr \|\| idCpu == NIL_VMCPUID)
2060	return VERR_INVALID_PARAMETER;
2061	rc = NEMR0ImportState(pGVM, pVM, idCpu, u64Arg);
2062	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2063	break;
2064
2065	case VMMR0_DO_NEM_UPDATE_STATISTICS:
2066	if (u64Arg \|\| pReqHdr)
2067	return VERR_INVALID_PARAMETER;
2068	rc = NEMR0UpdateStatistics(pGVM, pVM, idCpu);
2069	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2070	break;
2071	# endif
2072	#endif
2073
2074	/*
2075	* For profiling.
2076	*/
2077	case VMMR0_DO_NOP:
2078	case VMMR0_DO_SLOW_NOP:
2079	return VINF_SUCCESS;
2080
2081	/*
2082	* For testing Ring-0 APIs invoked in this environment.
2083	*/
2084	case VMMR0_DO_TESTS:
2085	/** @todo make new test */
2086	return VINF_SUCCESS;
2087
2088
2089	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
2090	case VMMR0_DO_TEST_SWITCHER3264:
2091	if (idCpu == NIL_VMCPUID)
2092	return VERR_INVALID_CPU_ID;
2093	rc = HMR0TestSwitcher3264(pVM);
2094	VMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
2095	break;
2096	#endif
2097	default:
2098	/*
2099	* We're returning VERR_NOT_SUPPORT here so we've got something else
2100	* than -1 which the interrupt gate glue code might return.
2101	*/
2102	Log(("operation %#x is not supported\n", enmOperation));
2103	return VERR_NOT_SUPPORTED;
2104	}
2105	return rc;
2106	}
2107
2108
2109	/**
2110	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
2111	*/
2112	typedef struct VMMR0ENTRYEXARGS
2113	{
2114	PGVM pGVM;
2115	PVM pVM;
2116	VMCPUID idCpu;
2117	VMMR0OPERATION enmOperation;
2118	PSUPVMMR0REQHDR pReq;
2119	uint64_t u64Arg;
2120	PSUPDRVSESSION pSession;
2121	} VMMR0ENTRYEXARGS;
2122	/** Pointer to a vmmR0EntryExWrapper argument package. */
2123	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
2124
2125	/**
2126	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
2127	*
2128	* @returns VBox status code.
2129	* @param pvArgs The argument package
2130	*/
2131	static DECLCALLBACK(int) vmmR0EntryExWrapper(void *pvArgs)
2132	{
2133	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pGVM,
2134	((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
2135	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
2136	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
2137	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
2138	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
2139	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
2140	}
2141
2142
2143	/**
2144	* The Ring 0 entry point, called by the support library (SUP).
2145	*
2146	* @returns VBox status code.
2147	* @param pGVM The global (ring-0) VM structure.
2148	* @param pVM The cross context VM structure.
2149	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
2150	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
2151	* @param enmOperation Which operation to execute.
2152	* @param pReq Pointer to the SUPVMMR0REQHDR packet. Optional.
2153	* @param u64Arg Some simple constant argument.
2154	* @param pSession The session of the caller.
2155	* @remarks Assume called with interrupts _enabled_.
2156	*/
2157	VMMR0DECL(int) VMMR0EntryEx(PGVM pGVM, PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation,
2158	PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
2159	{
2160	/*
2161	* Requests that should only happen on the EMT thread will be
2162	* wrapped in a setjmp so we can assert without causing trouble.
2163	*/
2164	if ( pVM != NULL
2165	&& pGVM != NULL
2166	&& idCpu < pGVM->cCpus
2167	&& pVM->pVMR0 != NULL)
2168	{
2169	switch (enmOperation)
2170	{
2171	/* These might/will be called before VMMR3Init. */
2172	case VMMR0_DO_GMM_INITIAL_RESERVATION:
2173	case VMMR0_DO_GMM_UPDATE_RESERVATION:
2174	case VMMR0_DO_GMM_ALLOCATE_PAGES:
2175	case VMMR0_DO_GMM_FREE_PAGES:
2176	case VMMR0_DO_GMM_BALLOONED_PAGES:
2177	/* On the mac we might not have a valid jmp buf, so check these as well. */
2178	case VMMR0_DO_VMMR0_INIT:
2179	case VMMR0_DO_VMMR0_TERM:
2180	{
2181	PGVMCPU pGVCpu = &pGVM->aCpus[idCpu];
2182	PVMCPU pVCpu = &pVM->aCpus[idCpu];
2183	RTNATIVETHREAD hNativeThread = RTThreadNativeSelf();
2184	if (RT_LIKELY( pGVCpu->hEMT == hNativeThread
2185	&& pVCpu->hNativeThreadR0 == hNativeThread))
2186	{
2187	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
2188	break;
2189
2190	/** @todo validate this EMT claim... GVM knows. */
2191	VMMR0ENTRYEXARGS Args;
2192	Args.pGVM = pGVM;
2193	Args.pVM = pVM;
2194	Args.idCpu = idCpu;
2195	Args.enmOperation = enmOperation;
2196	Args.pReq = pReq;
2197	Args.u64Arg = u64Arg;
2198	Args.pSession = pSession;
2199	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
2200	}
2201	return VERR_VM_THREAD_NOT_EMT;
2202	}
2203
2204	default:
2205	break;
2206	}
2207	}
2208	return vmmR0EntryExWorker(pGVM, pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
2209	}
2210
2211
2212	/**
2213	* Checks whether we've armed the ring-0 long jump machinery.
2214	*
2215	* @returns @c true / @c false
2216	* @param pVCpu The cross context virtual CPU structure.
2217	* @thread EMT
2218	* @sa VMMIsLongJumpArmed
2219	*/
2220	VMMR0_INT_DECL(bool) VMMR0IsLongJumpArmed(PVMCPU pVCpu)
2221	{
2222	#ifdef RT_ARCH_X86
2223	return pVCpu->vmm.s.CallRing3JmpBufR0.eip
2224	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
2225	#else
2226	return pVCpu->vmm.s.CallRing3JmpBufR0.rip
2227	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
2228	#endif
2229	}
2230
2231
2232	/**
2233	* Checks whether we've done a ring-3 long jump.
2234	*
2235	* @returns @c true / @c false
2236	* @param pVCpu The cross context virtual CPU structure.
2237	* @thread EMT
2238	*/
2239	VMMR0_INT_DECL(bool) VMMR0IsInRing3LongJump(PVMCPU pVCpu)
2240	{
2241	return pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
2242	}
2243
2244
2245	/**
2246	* Internal R0 logger worker: Flush logger.
2247	*
2248	* @param pLogger The logger instance to flush.
2249	* @remark This function must be exported!
2250	*/
2251	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
2252	{
2253	#ifdef LOG_ENABLED
2254	/*
2255	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
2256	* (This is a bit paranoid code.)
2257	*/
2258	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
2259	if ( !VALID_PTR(pR0Logger)
2260	\|\| !VALID_PTR(pR0Logger + 1)
2261	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
2262	{
2263	# ifdef DEBUG
2264	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
2265	# endif
2266	return;
2267	}
2268	if (pR0Logger->fFlushingDisabled)
2269	return; /* quietly */
2270
2271	PVM pVM = pR0Logger->pVM;
2272	if ( !VALID_PTR(pVM)
2273	\|\| pVM->pVMR0 != pVM)
2274	{
2275	# ifdef DEBUG
2276	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
2277	# endif
2278	return;
2279	}
2280
2281	PVMCPU pVCpu = VMMGetCpu(pVM);
2282	if (pVCpu)
2283	{
2284	/*
2285	* Check that the jump buffer is armed.
2286	*/
2287	# ifdef RT_ARCH_X86
2288	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
2289	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2290	# else
2291	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
2292	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2293	# endif
2294	{
2295	# ifdef DEBUG
2296	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
2297	# endif
2298	return;
2299	}
2300	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
2301	}
2302	# ifdef DEBUG
2303	else
2304	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
2305	# endif
2306	#else
2307	NOREF(pLogger);
2308	#endif /* LOG_ENABLED */
2309	}
2310
2311	/**
2312	* Internal R0 logger worker: Custom prefix.
2313	*
2314	* @returns Number of chars written.
2315	*
2316	* @param pLogger The logger instance.
2317	* @param pchBuf The output buffer.
2318	* @param cchBuf The size of the buffer.
2319	* @param pvUser User argument (ignored).
2320	*/
2321	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
2322	{
2323	NOREF(pvUser);
2324	#ifdef LOG_ENABLED
2325	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
2326	if ( !VALID_PTR(pR0Logger)
2327	\|\| !VALID_PTR(pR0Logger + 1)
2328	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
2329	\|\| cchBuf < 2)
2330	return 0;
2331
2332	static const char s_szHex[17] = "0123456789abcdef";
2333	VMCPUID const idCpu = pR0Logger->idCpu;
2334	pchBuf[1] = s_szHex[ idCpu & 15];
2335	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
2336
2337	return 2;
2338	#else
2339	NOREF(pLogger); NOREF(pchBuf); NOREF(cchBuf);
2340	return 0;
2341	#endif
2342	}
2343
2344	#ifdef LOG_ENABLED
2345
2346	/**
2347	* Disables flushing of the ring-0 debug log.
2348	*
2349	* @param pVCpu The cross context virtual CPU structure.
2350	*/
2351	VMMR0_INT_DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
2352	{
2353	if (pVCpu->vmm.s.pR0LoggerR0)
2354	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
2355	}
2356
2357
2358	/**
2359	* Enables flushing of the ring-0 debug log.
2360	*
2361	* @param pVCpu The cross context virtual CPU structure.
2362	*/
2363	VMMR0_INT_DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
2364	{
2365	if (pVCpu->vmm.s.pR0LoggerR0)
2366	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
2367	}
2368
2369
2370	/**
2371	* Checks if log flushing is disabled or not.
2372	*
2373	* @param pVCpu The cross context virtual CPU structure.
2374	*/
2375	VMMR0_INT_DECL(bool) VMMR0IsLogFlushDisabled(PVMCPU pVCpu)
2376	{
2377	if (pVCpu->vmm.s.pR0LoggerR0)
2378	return pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled;
2379	return true;
2380	}
2381	#endif /* LOG_ENABLED */
2382
2383	/**
2384	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
2385	*
2386	* @returns true if the breakpoint should be hit, false if it should be ignored.
2387	*/
2388	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
2389	{
2390	#if 0
2391	return true;
2392	#else
2393	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
2394	if (pVM)
2395	{
2396	PVMCPU pVCpu = VMMGetCpu(pVM);
2397
2398	if (pVCpu)
2399	{
2400	#ifdef RT_ARCH_X86
2401	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
2402	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2403	#else
2404	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
2405	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
2406	#endif
2407	{
2408	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
2409	return RT_FAILURE_NP(rc);
2410	}
2411	}
2412	}
2413	#ifdef RT_OS_LINUX
2414	return true;
2415	#else
2416	return false;
2417	#endif
2418	#endif
2419	}
2420
2421
2422	/**
2423	* Override this so we can push it up to ring-3.
2424	*
2425	* @param pszExpr Expression. Can be NULL.
2426	* @param uLine Location line number.
2427	* @param pszFile Location file name.
2428	* @param pszFunction Location function name.
2429	*/
2430	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
2431	{
2432	/*
2433	* To the log.
2434	*/
2435	LogAlways(("\n!!R0-Assertion Failed!!\n"
2436	"Expression: %s\n"
2437	"Location : %s(%d) %s\n",
2438	pszExpr, pszFile, uLine, pszFunction));
2439
2440	/*
2441	* To the global VMM buffer.
2442	*/
2443	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
2444	if (pVM)
2445	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
2446	"\n!!R0-Assertion Failed!!\n"
2447	"Expression: %.*s\n"
2448	"Location : %s(%d) %s\n",
2449	sizeof(pVM->vmm.s.szRing0AssertMsg1) / 4 * 3, pszExpr,
2450	pszFile, uLine, pszFunction);
2451
2452	/*
2453	* Continue the normal way.
2454	*/
2455	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
2456	}
2457
2458
2459	/**
2460	* Callback for RTLogFormatV which writes to the ring-3 log port.
2461	* See PFNLOGOUTPUT() for details.
2462	*/
2463	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
2464	{
2465	for (size_t i = 0; i < cbChars; i++)
2466	{
2467	LogAlways(("%c", pachChars[i])); NOREF(pachChars);
2468	}
2469
2470	NOREF(pv);
2471	return cbChars;
2472	}
2473
2474
2475	/**
2476	* Override this so we can push it up to ring-3.
2477	*
2478	* @param pszFormat The format string.
2479	* @param va Arguments.
2480	*/
2481	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
2482	{
2483	va_list vaCopy;
2484
2485	/*
2486	* Push the message to the loggers.
2487	*/
2488	PRTLOGGER pLog = RTLogGetDefaultInstance(); /* Don't initialize it here... */
2489	if (pLog)
2490	{
2491	va_copy(vaCopy, va);
2492	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
2493	va_end(vaCopy);
2494	}
2495	pLog = RTLogRelGetDefaultInstance();
2496	if (pLog)
2497	{
2498	va_copy(vaCopy, va);
2499	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
2500	va_end(vaCopy);
2501	}
2502
2503	/*
2504	* Push it to the global VMM buffer.
2505	*/
2506	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
2507	if (pVM)
2508	{
2509	va_copy(vaCopy, va);
2510	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
2511	va_end(vaCopy);
2512	}
2513
2514	/*
2515	* Continue the normal way.
2516	*/
2517	RTAssertMsg2V(pszFormat, va);
2518	}
2519

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

source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 72300

Download in other formats: