VMMR0.cpp@ 53632

Last change on this file since 53632 was 53632, checked in by vboxsync, 10 years ago
Return to ring-3 trace points.
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1	/* $Id: VMMR0.cpp 53632 2015-01-02 00:22:53Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2012 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	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_VMM
22	#include <VBox/vmm/vmm.h>
23	#include <VBox/sup.h>
24	#include <VBox/vmm/trpm.h>
25	#include <VBox/vmm/cpum.h>
26	#include <VBox/vmm/pdmapi.h>
27	#include <VBox/vmm/pgm.h>
28	#include <VBox/vmm/stam.h>
29	#include <VBox/vmm/tm.h>
30	#include "VMMInternal.h"
31	#include <VBox/vmm/vm.h>
32	#ifdef VBOX_WITH_PCI_PASSTHROUGH
33	# include <VBox/vmm/pdmpci.h>
34	#endif
35
36	#include <VBox/vmm/gvmm.h>
37	#include <VBox/vmm/gmm.h>
38	#include <VBox/vmm/gim.h>
39	#include <VBox/intnet.h>
40	#include <VBox/vmm/hm.h>
41	#include <VBox/param.h>
42	#include <VBox/err.h>
43	#include <VBox/version.h>
44	#include <VBox/log.h>
45
46	#include <iprt/asm-amd64-x86.h>
47	#include <iprt/assert.h>
48	#include <iprt/crc.h>
49	#include <iprt/mp.h>
50	#include <iprt/once.h>
51	#include <iprt/stdarg.h>
52	#include <iprt/string.h>
53	#include <iprt/thread.h>
54	#include <iprt/timer.h>
55
56	#include "dtrace/VBoxVMM.h"
57
58
59	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
60	# pragma intrinsic(_AddressOfReturnAddress)
61	#endif
62
63
64	/*******************************************************************************
65	* Internal Functions *
66	*******************************************************************************/
67	RT_C_DECLS_BEGIN
68	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
69	extern uint64_t __udivdi3(uint64_t, uint64_t);
70	extern uint64_t __umoddi3(uint64_t, uint64_t);
71	#endif
72	RT_C_DECLS_END
73
74
75	/*******************************************************************************
76	* Global Variables *
77	*******************************************************************************/
78	/** Drag in necessary library bits.
79	* The runtime lives here (in VMMR0.r0) and VBoxDDR0.r0 links against us. /
80	PFNRT g_VMMGCDeps[] =
81	{
82	(PFNRT)RTCrc32,
83	(PFNRT)RTOnce,
84	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
85	(PFNRT)__udivdi3,
86	(PFNRT)__umoddi3,
87	#endif
88	NULL
89	};
90
91	#ifdef RT_OS_SOLARIS
92	/* Dependency information for the native solaris loader. */
93	extern "C" { char _depends_on[] = "vboxdrv"; }
94	#endif
95
96
97
98	/**
99	* Initialize the module.
100	* This is called when we're first loaded.
101	*
102	* @returns 0 on success.
103	* @returns VBox status on failure.
104	* @param hMod Image handle for use in APIs.
105	*/
106	DECLEXPORT(int) ModuleInit(void *hMod)
107	{
108	#ifdef VBOX_WITH_DTRACE_R0
109	/*
110	* The first thing to do is register the static tracepoints.
111	* (Deregistration is automatic.)
112	*/
113	int rc2 = SUPR0TracerRegisterModule(hMod, &g_VTGObjHeader);
114	if (RT_FAILURE(rc2))
115	return rc2;
116	#endif
117	LogFlow(("ModuleInit:\n"));
118
119	#ifdef VBOX_WITH_64ON32_CMOS_DEBUG
120	/*
121	* Display the CMOS debug code.
122	*/
123	ASMOutU8(0x72, 0x03);
124	uint8_t bDebugCode = ASMInU8(0x73);
125	LogRel(("CMOS Debug Code: %#x (%d)\n", bDebugCode, bDebugCode));
126	RTLogComPrintf("CMOS Debug Code: %#x (%d)\n", bDebugCode, bDebugCode);
127	#endif
128
129	/*
130	* Initialize the VMM, GVMM, GMM, HM, PGM (Darwin) and INTNET.
131	*/
132	int rc = vmmInitFormatTypes();
133	if (RT_SUCCESS(rc))
134	{
135	rc = GVMMR0Init();
136	if (RT_SUCCESS(rc))
137	{
138	rc = GMMR0Init();
139	if (RT_SUCCESS(rc))
140	{
141	rc = HMR0Init();
142	if (RT_SUCCESS(rc))
143	{
144	rc = PGMRegisterStringFormatTypes();
145	if (RT_SUCCESS(rc))
146	{
147	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
148	rc = PGMR0DynMapInit();
149	#endif
150	if (RT_SUCCESS(rc))
151	{
152	rc = IntNetR0Init();
153	if (RT_SUCCESS(rc))
154	{
155	#ifdef VBOX_WITH_PCI_PASSTHROUGH
156	rc = PciRawR0Init();
157	#endif
158	if (RT_SUCCESS(rc))
159	{
160	rc = CPUMR0ModuleInit();
161	if (RT_SUCCESS(rc))
162	{
163	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
164	rc = vmmR0TripleFaultHackInit();
165	if (RT_SUCCESS(rc))
166	#endif
167	{
168	LogFlow(("ModuleInit: returns success.\n"));
169	return VINF_SUCCESS;
170	}
171
172	/*
173	* Bail out.
174	*/
175	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
176	vmmR0TripleFaultHackTerm();
177	#endif
178	}
179	else
180	LogRel(("ModuleInit: CPUMR0ModuleInit -> %Rrc\n", rc));
181	#ifdef VBOX_WITH_PCI_PASSTHROUGH
182	PciRawR0Term();
183	#endif
184	}
185	else
186	LogRel(("ModuleInit: PciRawR0Init -> %Rrc\n", rc));
187	IntNetR0Term();
188	}
189	else
190	LogRel(("ModuleInit: IntNetR0Init -> %Rrc\n", rc));
191	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
192	PGMR0DynMapTerm();
193	#endif
194	}
195	else
196	LogRel(("ModuleInit: PGMR0DynMapInit -> %Rrc\n", rc));
197	PGMDeregisterStringFormatTypes();
198	}
199	else
200	LogRel(("ModuleInit: PGMRegisterStringFormatTypes -> %Rrc\n", rc));
201	HMR0Term();
202	}
203	else
204	LogRel(("ModuleInit: HMR0Init -> %Rrc\n", rc));
205	GMMR0Term();
206	}
207	else
208	LogRel(("ModuleInit: GMMR0Init -> %Rrc\n", rc));
209	GVMMR0Term();
210	}
211	else
212	LogRel(("ModuleInit: GVMMR0Init -> %Rrc\n", rc));
213	vmmTermFormatTypes();
214	}
215	else
216	LogRel(("ModuleInit: vmmInitFormatTypes -> %Rrc\n", rc));
217
218	LogFlow(("ModuleInit: failed %Rrc\n", rc));
219	return rc;
220	}
221
222
223	/**
224	* Terminate the module.
225	* This is called when we're finally unloaded.
226	*
227	* @param hMod Image handle for use in APIs.
228	*/
229	DECLEXPORT(void) ModuleTerm(void *hMod)
230	{
231	NOREF(hMod);
232	LogFlow(("ModuleTerm:\n"));
233
234	/*
235	* Terminate the CPUM module (Local APIC cleanup).
236	*/
237	CPUMR0ModuleTerm();
238
239	/*
240	* Terminate the internal network service.
241	*/
242	IntNetR0Term();
243
244	/*
245	* PGM (Darwin), HM and PciRaw global cleanup.
246	*/
247	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
248	PGMR0DynMapTerm();
249	#endif
250	#ifdef VBOX_WITH_PCI_PASSTHROUGH
251	PciRawR0Term();
252	#endif
253	PGMDeregisterStringFormatTypes();
254	HMR0Term();
255	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
256	vmmR0TripleFaultHackTerm();
257	#endif
258
259	/*
260	* Destroy the GMM and GVMM instances.
261	*/
262	GMMR0Term();
263	GVMMR0Term();
264
265	vmmTermFormatTypes();
266
267	LogFlow(("ModuleTerm: returns\n"));
268	}
269
270
271	/**
272	* Initiates the R0 driver for a particular VM instance.
273	*
274	* @returns VBox status code.
275	*
276	* @param pVM Pointer to the VM.
277	* @param uSvnRev The SVN revision of the ring-3 part.
278	* @param uBuildType Build type indicator.
279	* @thread EMT.
280	*/
281	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev, uint32_t uBuildType)
282	{
283	/*
284	* Match the SVN revisions and build type.
285	*/
286	if (uSvnRev != VMMGetSvnRev())
287	{
288	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
289	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
290	return VERR_VMM_R0_VERSION_MISMATCH;
291	}
292	if (uBuildType != vmmGetBuildType())
293	{
294	LogRel(("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType()));
295	SUPR0Printf("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType());
296	return VERR_VMM_R0_VERSION_MISMATCH;
297	}
298	if ( !VALID_PTR(pVM)
299	\|\| pVM->pVMR0 != pVM)
300	return VERR_INVALID_PARAMETER;
301
302
303	#ifdef LOG_ENABLED
304	/*
305	* Register the EMT R0 logger instance for VCPU 0.
306	*/
307	PVMCPU pVCpu = &pVM->aCpus[0];
308
309	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
310	if (pR0Logger)
311	{
312	# if 0 /* testing of the logger. */
313	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
314	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
315	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
316	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
317
318	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
319	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
320	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
321	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
322
323	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
324	LogCom(("vmmR0InitVM: returned successfully from direct logger call.\n"));
325	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
326	LogCom(("vmmR0InitVM: returned successfully from direct flush call.\n"));
327
328	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
329	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
330	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
331	LogCom(("vmmR0InitVM: returned successfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
332	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
333	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
334
335	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
336	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
337
338	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
339	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
340	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
341	# endif
342	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
343	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
344	pR0Logger->fRegistered = true;
345	}
346	#endif /* LOG_ENABLED */
347
348	/*
349	* Check if the host supports high resolution timers or not.
350	*/
351	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
352	&& !RTTimerCanDoHighResolution())
353	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
354
355	/*
356	* Initialize the per VM data for GVMM and GMM.
357	*/
358	int rc = GVMMR0InitVM(pVM);
359	// if (RT_SUCCESS(rc))
360	// rc = GMMR0InitPerVMData(pVM);
361	if (RT_SUCCESS(rc))
362	{
363	/*
364	* Init HM, CPUM and PGM (Darwin only).
365	*/
366	rc = HMR0InitVM(pVM);
367	if (RT_SUCCESS(rc))
368	{
369	rc = CPUMR0InitVM(pVM);
370	if (RT_SUCCESS(rc))
371	{
372	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
373	rc = PGMR0DynMapInitVM(pVM);
374	#endif
375	if (RT_SUCCESS(rc))
376	{
377	#ifdef VBOX_WITH_PCI_PASSTHROUGH
378	rc = PciRawR0InitVM(pVM);
379	#endif
380	if (RT_SUCCESS(rc))
381	{
382	rc = GIMR0InitVM(pVM);
383	if (RT_SUCCESS(rc))
384	{
385	GVMMR0DoneInitVM(pVM);
386	return rc;
387	}
388
389	/* bail out*/
390	#ifdef VBOX_WITH_PCI_PASSTHROUGH
391	PciRawR0TermVM(pVM);
392	#endif
393	}
394	}
395	}
396	HMR0TermVM(pVM);
397	}
398	}
399
400
401	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
402	return rc;
403	}
404
405
406	/**
407	* Terminates the R0 bits for a particular VM instance.
408	*
409	* This is normally called by ring-3 as part of the VM termination process, but
410	* may alternatively be called during the support driver session cleanup when
411	* the VM object is destroyed (see GVMM).
412	*
413	* @returns VBox status code.
414	*
415	* @param pVM Pointer to the VM.
416	* @param pGVM Pointer to the global VM structure. Optional.
417	* @thread EMT or session clean up thread.
418	*/
419	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
420	{
421	#ifdef VBOX_WITH_PCI_PASSTHROUGH
422	PciRawR0TermVM(pVM);
423	#endif
424
425	/*
426	* Tell GVMM what we're up to and check that we only do this once.
427	*/
428	if (GVMMR0DoingTermVM(pVM, pGVM))
429	{
430	GIMR0TermVM(pVM);
431
432	/** @todo I wish to call PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu])
433	* here to make sure we don't leak any shared pages if we crash... */
434	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
435	PGMR0DynMapTermVM(pVM);
436	#endif
437	HMR0TermVM(pVM);
438	}
439
440	/*
441	* Deregister the logger.
442	*/
443	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
444	return VINF_SUCCESS;
445	}
446
447
448	/**
449	* Creates R0 thread-context hooks for the current EMT thread.
450	*
451	* @returns VBox status code.
452	* @param pVCpu Pointer to the VMCPU.
453	*
454	* @thread EMT(pVCpu)
455	*/
456	VMMR0DECL(int) VMMR0ThreadCtxHooksCreate(PVMCPU pVCpu)
457	{
458	VMCPU_ASSERT_EMT(pVCpu);
459	Assert(pVCpu->vmm.s.hR0ThreadCtx == NIL_RTTHREADCTX);
460	#if defined(RT_OS_LINUX) \|\| defined(RT_OS_SOLARIS)
461	int rc = RTThreadCtxHooksCreate(&pVCpu->vmm.s.hR0ThreadCtx);
462	if ( RT_FAILURE(rc)
463	&& rc != VERR_NOT_SUPPORTED)
464	{
465	Log(("RTThreadCtxHooksCreate failed! rc=%Rrc pVCpu=%p idCpu=%RU32\n", rc, pVCpu, pVCpu->idCpu));
466	return rc;
467	}
468	#endif
469
470	return VINF_SUCCESS;
471	}
472
473
474	/**
475	* Releases the object reference for the thread-context hook.
476	*
477	* @param pVCpu Pointer to the VMCPU.
478	* @remarks Can be called from any thread.
479	*/
480	VMMR0DECL(void) VMMR0ThreadCtxHooksRelease(PVMCPU pVCpu)
481	{
482	RTThreadCtxHooksRelease(pVCpu->vmm.s.hR0ThreadCtx);
483	}
484
485
486	/**
487	* Registers the thread-context hook for this VCPU.
488	*
489	* @returns VBox status code.
490	* @param pVCpu Pointer to the VMCPU.
491	* @param pfnThreadHook Pointer to the thread-context callback.
492	*
493	* @thread EMT(pVCpu)
494	*/
495	VMMR0DECL(int) VMMR0ThreadCtxHooksRegister(PVMCPU pVCpu, PFNRTTHREADCTXHOOK pfnThreadHook)
496	{
497	VMCPU_ASSERT_EMT(pVCpu);
498	return RTThreadCtxHooksRegister(pVCpu->vmm.s.hR0ThreadCtx, pfnThreadHook, pVCpu);
499	}
500
501
502	/**
503	* Deregisters the thread-context hook for this VCPU.
504	*
505	* @returns VBox status code.
506	* @param pVCpu Pointer to the VMCPU.
507	*
508	* @thread EMT(pVCpu)
509	*/
510	VMMR0DECL(int) VMMR0ThreadCtxHooksDeregister(PVMCPU pVCpu)
511	{
512	return RTThreadCtxHooksDeregister(pVCpu->vmm.s.hR0ThreadCtx);
513	}
514
515
516	/**
517	* Whether thread-context hooks are created (implying they're supported) on this
518	* platform.
519	*
520	* @returns true if the hooks are created, false otherwise.
521	* @param pVCpu Pointer to the VMCPU.
522	*/
523	VMMR0DECL(bool) VMMR0ThreadCtxHooksAreCreated(PVMCPU pVCpu)
524	{
525	return pVCpu->vmm.s.hR0ThreadCtx != NIL_RTTHREADCTX;
526	}
527
528
529	/**
530	* Whether thread-context hooks are registered for this VCPU.
531	*
532	* @returns true if registered, false otherwise.
533	* @param pVCpu Pointer to the VMCPU.
534	*/
535	VMMR0DECL(bool) VMMR0ThreadCtxHooksAreRegistered(PVMCPU pVCpu)
536	{
537	return RTThreadCtxHooksAreRegistered(pVCpu->vmm.s.hR0ThreadCtx);
538	}
539
540
541	/**
542	* VMM ring-0 thread-context callback.
543	*
544	* This does common HM state updating and calls the HM-specific thread-context
545	* callback.
546	*
547	* @param enmEvent The thread-context event.
548	* @param pvUser Opaque pointer to the VMCPU.
549	*
550	* @thread EMT(pvUser)
551	*/
552	static DECLCALLBACK(void) vmmR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, void *pvUser)
553	{
554	PVMCPU pVCpu = (PVMCPU)pvUser;
555
556	switch (enmEvent)
557	{
558	case RTTHREADCTXEVENT_RESUMED:
559	{
560	/** @todo Linux may call us with preemption enabled (really!) but technically we
561	* cannot get preempted here, otherwise we end up in an infinite recursion
562	* scenario (i.e. preempted in resume hook -> preempt hook -> resume hook... ad
563	* infinitum). Let's just disable preemption for now...
564	*/
565	HM_DISABLE_PREEMPT_IF_NEEDED();
566
567	/* We need to update the VCPU <-> host CPU mapping. */
568	RTCPUID idHostCpu = RTMpCpuId();
569	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
570
571	/* Invoke the HM-specific thread-context callback. */
572	HMR0ThreadCtxCallback(enmEvent, pvUser);
573
574	/* Restore preemption. */
575	HM_RESTORE_PREEMPT_IF_NEEDED();
576	break;
577	}
578
579	case RTTHREADCTXEVENT_PREEMPTING:
580	{
581	/* Invoke the HM-specific thread-context callback. */
582	HMR0ThreadCtxCallback(enmEvent, pvUser);
583
584	/*
585	* Sigh. See VMMGetCpu() used by VMCPU_ASSERT_EMT(). We cannot let several VCPUs
586	* have the same host CPU associated with it.
587	*/
588	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
589	break;
590	}
591
592	default:
593	/* Invoke the HM-specific thread-context callback. */
594	HMR0ThreadCtxCallback(enmEvent, pvUser);
595	break;
596	}
597	}
598
599
600	#ifdef VBOX_WITH_STATISTICS
601	/**
602	* Record return code statistics
603	* @param pVM Pointer to the VM.
604	* @param pVCpu Pointer to the VMCPU.
605	* @param rc The status code.
606	*/
607	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
608	{
609	/*
610	* Collect statistics.
611	*/
612	switch (rc)
613	{
614	case VINF_SUCCESS:
615	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
616	break;
617	case VINF_EM_RAW_INTERRUPT:
618	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
619	break;
620	case VINF_EM_RAW_INTERRUPT_HYPER:
621	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
622	break;
623	case VINF_EM_RAW_GUEST_TRAP:
624	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
625	break;
626	case VINF_EM_RAW_RING_SWITCH:
627	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
628	break;
629	case VINF_EM_RAW_RING_SWITCH_INT:
630	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
631	break;
632	case VINF_EM_RAW_STALE_SELECTOR:
633	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
634	break;
635	case VINF_EM_RAW_IRET_TRAP:
636	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
637	break;
638	case VINF_IOM_R3_IOPORT_READ:
639	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
640	break;
641	case VINF_IOM_R3_IOPORT_WRITE:
642	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
643	break;
644	case VINF_IOM_R3_MMIO_READ:
645	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
646	break;
647	case VINF_IOM_R3_MMIO_WRITE:
648	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
649	break;
650	case VINF_IOM_R3_MMIO_READ_WRITE:
651	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
652	break;
653	case VINF_PATM_HC_MMIO_PATCH_READ:
654	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
655	break;
656	case VINF_PATM_HC_MMIO_PATCH_WRITE:
657	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
658	break;
659	case VINF_CPUM_R3_MSR_READ:
660	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMSRRead);
661	break;
662	case VINF_CPUM_R3_MSR_WRITE:
663	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMSRWrite);
664	break;
665	case VINF_EM_RAW_EMULATE_INSTR:
666	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
667	break;
668	case VINF_EM_RAW_EMULATE_IO_BLOCK:
669	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
670	break;
671	case VINF_PATCH_EMULATE_INSTR:
672	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
673	break;
674	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
675	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
676	break;
677	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
678	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
679	break;
680	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
681	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
682	break;
683	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
684	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
685	break;
686	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
687	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
688	break;
689	case VINF_CSAM_PENDING_ACTION:
690	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
691	break;
692	case VINF_PGM_SYNC_CR3:
693	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
694	break;
695	case VINF_PATM_PATCH_INT3:
696	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
697	break;
698	case VINF_PATM_PATCH_TRAP_PF:
699	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
700	break;
701	case VINF_PATM_PATCH_TRAP_GP:
702	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
703	break;
704	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
705	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
706	break;
707	case VINF_EM_RESCHEDULE_REM:
708	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
709	break;
710	case VINF_EM_RAW_TO_R3:
711	if (VM_FF_IS_PENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
712	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
713	else if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
714	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
715	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_QUEUES))
716	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
717	else if (VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS))
718	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
719	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
720	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
721	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TIMER))
722	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
723	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
724	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
725	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TO_R3))
726	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
727	else
728	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
729	break;
730
731	case VINF_EM_RAW_TIMER_PENDING:
732	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
733	break;
734	case VINF_EM_RAW_INTERRUPT_PENDING:
735	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
736	break;
737	case VINF_VMM_CALL_HOST:
738	switch (pVCpu->vmm.s.enmCallRing3Operation)
739	{
740	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
741	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
742	break;
743	case VMMCALLRING3_PDM_LOCK:
744	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
745	break;
746	case VMMCALLRING3_PGM_POOL_GROW:
747	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
748	break;
749	case VMMCALLRING3_PGM_LOCK:
750	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
751	break;
752	case VMMCALLRING3_PGM_MAP_CHUNK:
753	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
754	break;
755	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
756	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
757	break;
758	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
759	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
760	break;
761	case VMMCALLRING3_VMM_LOGGER_FLUSH:
762	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
763	break;
764	case VMMCALLRING3_VM_SET_ERROR:
765	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
766	break;
767	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
768	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
769	break;
770	case VMMCALLRING3_VM_R0_ASSERTION:
771	default:
772	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
773	break;
774	}
775	break;
776	case VINF_PATM_DUPLICATE_FUNCTION:
777	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
778	break;
779	case VINF_PGM_CHANGE_MODE:
780	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
781	break;
782	case VINF_PGM_POOL_FLUSH_PENDING:
783	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
784	break;
785	case VINF_EM_PENDING_REQUEST:
786	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
787	break;
788	case VINF_EM_HM_PATCH_TPR_INSTR:
789	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
790	break;
791	default:
792	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
793	break;
794	}
795	}
796	#endif /* VBOX_WITH_STATISTICS */
797
798
799	/**
800	* Unused ring-0 entry point that used to be called from the interrupt gate.
801	*
802	* Will be removed one of the next times we do a major SUPDrv version bump.
803	*
804	* @returns VBox status code.
805	* @param pVM Pointer to the VM.
806	* @param enmOperation Which operation to execute.
807	* @param pvArg Argument to the operation.
808	* @remarks Assume called with interrupts disabled.
809	*/
810	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
811	{
812	/*
813	* We're returning VERR_NOT_SUPPORT here so we've got something else
814	* than -1 which the interrupt gate glue code might return.
815	*/
816	Log(("operation %#x is not supported\n", enmOperation));
817	NOREF(enmOperation); NOREF(pvArg); NOREF(pVM);
818	return VERR_NOT_SUPPORTED;
819	}
820
821
822	/**
823	* The Ring 0 entry point, called by the fast-ioctl path.
824	*
825	* @param pVM Pointer to the VM.
826	* The return code is stored in pVM->vmm.s.iLastGZRc.
827	* @param idCpu The Virtual CPU ID of the calling EMT.
828	* @param enmOperation Which operation to execute.
829	* @remarks Assume called with interrupts _enabled_.
830	*/
831	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
832	{
833	/*
834	* Validation.
835	*/
836	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
837	return;
838	PVMCPU pVCpu = &pVM->aCpus[idCpu];
839	if (RT_UNLIKELY(pVCpu->hNativeThreadR0 != RTThreadNativeSelf()))
840	return;
841
842	/*
843	* Perform requested operation.
844	*/
845	switch (enmOperation)
846	{
847	/*
848	* Switch to GC and run guest raw mode code.
849	* Disable interrupts before doing the world switch.
850	*/
851	case VMMR0_DO_RAW_RUN:
852	{
853	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
854	/* Some safety precautions first. */
855	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
856	{
857	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
858	break;
859	}
860	#endif
861
862	/* Disable preemption and update the periodic preemption timer. */
863	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
864	RTThreadPreemptDisable(&PreemptState);
865	RTCPUID idHostCpu = RTMpCpuId();
866	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
867	CPUMR0SetLApic(pVCpu, idHostCpu);
868	#endif
869	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
870	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
871	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
872
873	/* We might need to disable VT-x if the active switcher turns off paging. */
874	bool fVTxDisabled;
875	int rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
876	if (RT_SUCCESS(rc))
877	{
878	RTCCUINTREG uFlags = ASMIntDisableFlags();
879
880	for (;;)
881	{
882	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
883	TMNotifyStartOfExecution(pVCpu);
884
885	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
886	pVCpu->vmm.s.iLastGZRc = rc;
887
888	TMNotifyEndOfExecution(pVCpu);
889	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
890
891	if (rc != VINF_VMM_CALL_TRACER)
892	break;
893	SUPR0TracerUmodProbeFire(pVM->pSession, &pVCpu->vmm.s.TracerCtx);
894	}
895
896	/* Re-enable VT-x if previously turned off. */
897	HMR0LeaveSwitcher(pVM, fVTxDisabled);
898
899	if ( rc == VINF_EM_RAW_INTERRUPT
900	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
901	TRPMR0DispatchHostInterrupt(pVM);
902
903	ASMSetFlags(uFlags);
904
905	VBOXVMM_R0_VMM_RETURN_TO_RING3_RC(pVCpu, CPUMQueryGuestCtxPtr(pVCpu), rc);
906	#ifdef VBOX_WITH_STATISTICS
907	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
908	vmmR0RecordRC(pVM, pVCpu, rc);
909	#endif
910	}
911	else
912	pVCpu->vmm.s.iLastGZRc = rc;
913	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
914	RTThreadPreemptRestore(&PreemptState);
915	break;
916	}
917
918	/*
919	* Run guest code using the available hardware acceleration technology.
920	*/
921	case VMMR0_DO_HM_RUN:
922	{
923	Assert(!VMMR0ThreadCtxHooksAreRegistered(pVCpu));
924	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
925	RTThreadPreemptDisable(&PreemptState);
926
927	/* Update the VCPU <-> host CPU mapping before doing anything else. */
928	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
929	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
930	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
931	#ifdef LOG_ENABLED
932	if (pVCpu->idCpu > 0)
933	{
934	/* Lazy registration of ring 0 loggers. */
935	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
936	if ( pR0Logger
937	&& !pR0Logger->fRegistered)
938	{
939	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
940	pR0Logger->fRegistered = true;
941	}
942	}
943	#endif
944
945	int rc;
946	bool fPreemptRestored = false;
947	if (!HMR0SuspendPending())
948	{
949	/* Register thread-context hooks if required. */
950	if ( VMMR0ThreadCtxHooksAreCreated(pVCpu)
951	&& !VMMR0ThreadCtxHooksAreRegistered(pVCpu))
952	{
953	rc = VMMR0ThreadCtxHooksRegister(pVCpu, vmmR0ThreadCtxCallback);
954	AssertRC(rc);
955	}
956
957	/* Enter HM context. */
958	rc = HMR0Enter(pVM, pVCpu);
959	if (RT_SUCCESS(rc))
960	{
961	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
962
963	/* When preemption hooks are in place, enable preemption now that we're in HM context. */
964	if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
965	{
966	fPreemptRestored = true;
967	RTThreadPreemptRestore(&PreemptState);
968	}
969
970	/* Setup the longjmp machinery and execute guest code. */
971	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HMR0RunGuestCode, pVM, pVCpu);
972
973	/* Manual assert as normal assertions are going to crash in this case. */
974	if (RT_UNLIKELY( VMCPU_GET_STATE(pVCpu) != VMCPUSTATE_STARTED_HM
975	&& RT_SUCCESS_NP(rc) && rc != VINF_VMM_CALL_HOST ))
976	{
977	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
978	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
979	"Got VMCPU state %d expected %d.\n", VMCPU_GET_STATE(pVCpu), VMCPUSTATE_STARTED_HM);
980	rc = VERR_VMM_WRONG_HM_VMCPU_STATE;
981	}
982	else if (RT_UNLIKELY(VMMR0ThreadCtxHooksAreRegistered(pVCpu)))
983	{
984	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
985	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
986	"Thread-context hooks still registered! VCPU=%p Id=%u rc=%d.\n", pVCpu, pVCpu->idCpu, rc);
987	rc = VERR_INVALID_STATE;
988	}
989
990	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
991	}
992	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
993	}
994	else
995	{
996	/* System is about to go into suspend mode; go back to ring 3. */
997	rc = VINF_EM_RAW_INTERRUPT;
998	}
999	pVCpu->vmm.s.iLastGZRc = rc;
1000
1001	/* Clear the VCPU <-> host CPU mapping as we've left HM context. */
1002	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
1003
1004	if (!fPreemptRestored)
1005	RTThreadPreemptRestore(&PreemptState);
1006
1007	VBOXVMM_R0_VMM_RETURN_TO_RING3_HM(pVCpu, CPUMQueryGuestCtxPtr(pVCpu), rc);
1008	#ifdef VBOX_WITH_STATISTICS
1009	vmmR0RecordRC(pVM, pVCpu, rc);
1010	#endif
1011	/* No special action required for external interrupts, just return. */
1012	break;
1013	}
1014
1015	/*
1016	* For profiling.
1017	*/
1018	case VMMR0_DO_NOP:
1019	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
1020	break;
1021
1022	/*
1023	* Impossible.
1024	*/
1025	default:
1026	AssertMsgFailed(("%#x\n", enmOperation));
1027	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
1028	break;
1029	}
1030	}
1031
1032
1033	/**
1034	* Validates a session or VM session argument.
1035	*
1036	* @returns true / false accordingly.
1037	* @param pVM Pointer to the VM.
1038	* @param pSession The session argument.
1039	*/
1040	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
1041	{
1042	/* This must be set! */
1043	if (!pSession)
1044	return false;
1045
1046	/* Only one out of the two. */
1047	if (pVM && pClaimedSession)
1048	return false;
1049	if (pVM)
1050	pClaimedSession = pVM->pSession;
1051	return pClaimedSession == pSession;
1052	}
1053
1054
1055	/**
1056	* VMMR0EntryEx worker function, either called directly or when ever possible
1057	* called thru a longjmp so we can exit safely on failure.
1058	*
1059	* @returns VBox status code.
1060	* @param pVM Pointer to the VM.
1061	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1062	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1063	* @param enmOperation Which operation to execute.
1064	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
1065	* The support driver validates this if it's present.
1066	* @param u64Arg Some simple constant argument.
1067	* @param pSession The session of the caller.
1068	* @remarks Assume called with interrupts _enabled_.
1069	*/
1070	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
1071	{
1072	/*
1073	* Common VM pointer validation.
1074	*/
1075	if (pVM)
1076	{
1077	if (RT_UNLIKELY( !VALID_PTR(pVM)
1078	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
1079	{
1080	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
1081	return VERR_INVALID_POINTER;
1082	}
1083	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
1084	\|\| pVM->enmVMState > VMSTATE_TERMINATED
1085	\|\| pVM->pVMR0 != pVM))
1086	{
1087	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
1088	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
1089	return VERR_INVALID_POINTER;
1090	}
1091
1092	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
1093	{
1094	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
1095	return VERR_INVALID_PARAMETER;
1096	}
1097	}
1098	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
1099	{
1100	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
1101	return VERR_INVALID_PARAMETER;
1102	}
1103
1104
1105	switch (enmOperation)
1106	{
1107	/*
1108	* GVM requests
1109	*/
1110	case VMMR0_DO_GVMM_CREATE_VM:
1111	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1112	return VERR_INVALID_PARAMETER;
1113	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
1114
1115	case VMMR0_DO_GVMM_DESTROY_VM:
1116	if (pReqHdr \|\| u64Arg)
1117	return VERR_INVALID_PARAMETER;
1118	return GVMMR0DestroyVM(pVM);
1119
1120	case VMMR0_DO_GVMM_REGISTER_VMCPU:
1121	{
1122	if (!pVM)
1123	return VERR_INVALID_PARAMETER;
1124	return GVMMR0RegisterVCpu(pVM, idCpu);
1125	}
1126
1127	case VMMR0_DO_GVMM_SCHED_HALT:
1128	if (pReqHdr)
1129	return VERR_INVALID_PARAMETER;
1130	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
1131
1132	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
1133	if (pReqHdr \|\| u64Arg)
1134	return VERR_INVALID_PARAMETER;
1135	return GVMMR0SchedWakeUp(pVM, idCpu);
1136
1137	case VMMR0_DO_GVMM_SCHED_POKE:
1138	if (pReqHdr \|\| u64Arg)
1139	return VERR_INVALID_PARAMETER;
1140	return GVMMR0SchedPoke(pVM, idCpu);
1141
1142	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
1143	if (u64Arg)
1144	return VERR_INVALID_PARAMETER;
1145	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
1146
1147	case VMMR0_DO_GVMM_SCHED_POLL:
1148	if (pReqHdr \|\| u64Arg > 1)
1149	return VERR_INVALID_PARAMETER;
1150	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
1151
1152	case VMMR0_DO_GVMM_QUERY_STATISTICS:
1153	if (u64Arg)
1154	return VERR_INVALID_PARAMETER;
1155	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
1156
1157	case VMMR0_DO_GVMM_RESET_STATISTICS:
1158	if (u64Arg)
1159	return VERR_INVALID_PARAMETER;
1160	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
1161
1162	/*
1163	* Initialize the R0 part of a VM instance.
1164	*/
1165	case VMMR0_DO_VMMR0_INIT:
1166	return vmmR0InitVM(pVM, RT_LODWORD(u64Arg), RT_HIDWORD(u64Arg));
1167
1168	/*
1169	* Terminate the R0 part of a VM instance.
1170	*/
1171	case VMMR0_DO_VMMR0_TERM:
1172	return VMMR0TermVM(pVM, NULL);
1173
1174	/*
1175	* Attempt to enable hm mode and check the current setting.
1176	*/
1177	case VMMR0_DO_HM_ENABLE:
1178	return HMR0EnableAllCpus(pVM);
1179
1180	/*
1181	* Setup the hardware accelerated session.
1182	*/
1183	case VMMR0_DO_HM_SETUP_VM:
1184	return HMR0SetupVM(pVM);
1185
1186	/*
1187	* Switch to RC to execute Hypervisor function.
1188	*/
1189	case VMMR0_DO_CALL_HYPERVISOR:
1190	{
1191	int rc;
1192	bool fVTxDisabled;
1193
1194	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1195	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
1196	return VERR_PGM_NO_CR3_SHADOW_ROOT;
1197	#endif
1198
1199	RTCCUINTREG fFlags = ASMIntDisableFlags();
1200
1201	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1202	RTCPUID idHostCpu = RTMpCpuId();
1203	CPUMR0SetLApic(&pVM->aCpus[0], idHostCpu);
1204	#endif
1205
1206	/* We might need to disable VT-x if the active switcher turns off paging. */
1207	rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
1208	if (RT_FAILURE(rc))
1209	return rc;
1210
1211	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
1212
1213	/* Re-enable VT-x if previously turned off. */
1214	HMR0LeaveSwitcher(pVM, fVTxDisabled);
1215
1216	/** @todo dispatch interrupts? */
1217	ASMSetFlags(fFlags);
1218	return rc;
1219	}
1220
1221	/*
1222	* PGM wrappers.
1223	*/
1224	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
1225	if (idCpu == NIL_VMCPUID)
1226	return VERR_INVALID_CPU_ID;
1227	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
1228
1229	case VMMR0_DO_PGM_FLUSH_HANDY_PAGES:
1230	if (idCpu == NIL_VMCPUID)
1231	return VERR_INVALID_CPU_ID;
1232	return PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu]);
1233
1234	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
1235	if (idCpu == NIL_VMCPUID)
1236	return VERR_INVALID_CPU_ID;
1237	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
1238
1239	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
1240	if (idCpu != 0)
1241	return VERR_INVALID_CPU_ID;
1242	return PGMR0PhysSetupIommu(pVM);
1243
1244	/*
1245	* GMM wrappers.
1246	*/
1247	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1248	if (u64Arg)
1249	return VERR_INVALID_PARAMETER;
1250	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
1251
1252	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1253	if (u64Arg)
1254	return VERR_INVALID_PARAMETER;
1255	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
1256
1257	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1258	if (u64Arg)
1259	return VERR_INVALID_PARAMETER;
1260	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
1261
1262	case VMMR0_DO_GMM_FREE_PAGES:
1263	if (u64Arg)
1264	return VERR_INVALID_PARAMETER;
1265	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1266
1267	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1268	if (u64Arg)
1269	return VERR_INVALID_PARAMETER;
1270	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1271
1272	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1273	if (u64Arg)
1274	return VERR_INVALID_PARAMETER;
1275	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
1276
1277	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1278	if (idCpu == NIL_VMCPUID)
1279	return VERR_INVALID_CPU_ID;
1280	if (u64Arg)
1281	return VERR_INVALID_PARAMETER;
1282	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1283
1284	case VMMR0_DO_GMM_BALLOONED_PAGES:
1285	if (u64Arg)
1286	return VERR_INVALID_PARAMETER;
1287	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1288
1289	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1290	if (u64Arg)
1291	return VERR_INVALID_PARAMETER;
1292	return GMMR0MapUnmapChunkReq(pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1293
1294	case VMMR0_DO_GMM_SEED_CHUNK:
1295	if (pReqHdr)
1296	return VERR_INVALID_PARAMETER;
1297	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
1298
1299	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1300	if (idCpu == NIL_VMCPUID)
1301	return VERR_INVALID_CPU_ID;
1302	if (u64Arg)
1303	return VERR_INVALID_PARAMETER;
1304	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1305
1306	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1307	if (idCpu == NIL_VMCPUID)
1308	return VERR_INVALID_CPU_ID;
1309	if (u64Arg)
1310	return VERR_INVALID_PARAMETER;
1311	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1312
1313	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1314	if (idCpu == NIL_VMCPUID)
1315	return VERR_INVALID_CPU_ID;
1316	if ( u64Arg
1317	\|\| pReqHdr)
1318	return VERR_INVALID_PARAMETER;
1319	return GMMR0ResetSharedModules(pVM, idCpu);
1320
1321	#ifdef VBOX_WITH_PAGE_SHARING
1322	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1323	{
1324	if (idCpu == NIL_VMCPUID)
1325	return VERR_INVALID_CPU_ID;
1326	if ( u64Arg
1327	\|\| pReqHdr)
1328	return VERR_INVALID_PARAMETER;
1329
1330	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1331	Assert(pVCpu->hNativeThreadR0 == RTThreadNativeSelf());
1332
1333	# ifdef DEBUG_sandervl
1334	/* Make sure that log flushes can jump back to ring-3; annoying to get an incomplete log (this is risky though as the code doesn't take this into account). */
1335	/* Todo: this can have bad side effects for unexpected jumps back to r3. */
1336	int rc = GMMR0CheckSharedModulesStart(pVM);
1337	if (rc == VINF_SUCCESS)
1338	{
1339	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, GMMR0CheckSharedModules, pVM, pVCpu); /* this may resume code. */
1340	Assert( rc == VINF_SUCCESS
1341	\|\| (rc == VINF_VMM_CALL_HOST && pVCpu->vmm.s.enmCallRing3Operation == VMMCALLRING3_VMM_LOGGER_FLUSH));
1342	GMMR0CheckSharedModulesEnd(pVM);
1343	}
1344	# else
1345	int rc = GMMR0CheckSharedModules(pVM, pVCpu);
1346	# endif
1347	return rc;
1348	}
1349	#endif
1350
1351	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1352	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1353	if (u64Arg)
1354	return VERR_INVALID_PARAMETER;
1355	return GMMR0FindDuplicatePageReq(pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1356	#endif
1357
1358	case VMMR0_DO_GMM_QUERY_STATISTICS:
1359	if (u64Arg)
1360	return VERR_INVALID_PARAMETER;
1361	return GMMR0QueryStatisticsReq(pVM, (PGMMQUERYSTATISTICSSREQ)pReqHdr);
1362
1363	case VMMR0_DO_GMM_RESET_STATISTICS:
1364	if (u64Arg)
1365	return VERR_INVALID_PARAMETER;
1366	return GMMR0ResetStatisticsReq(pVM, (PGMMRESETSTATISTICSSREQ)pReqHdr);
1367
1368	/*
1369	* A quick GCFGM mock-up.
1370	*/
1371	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1372	case VMMR0_DO_GCFGM_SET_VALUE:
1373	case VMMR0_DO_GCFGM_QUERY_VALUE:
1374	{
1375	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1376	return VERR_INVALID_PARAMETER;
1377	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1378	if (pReq->Hdr.cbReq != sizeof(*pReq))
1379	return VERR_INVALID_PARAMETER;
1380	int rc;
1381	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1382	{
1383	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1384	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1385	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1386	}
1387	else
1388	{
1389	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1390	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1391	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1392	}
1393	return rc;
1394	}
1395
1396	/*
1397	* PDM Wrappers.
1398	*/
1399	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1400	{
1401	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1402	return VERR_INVALID_PARAMETER;
1403	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1404	}
1405
1406	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1407	{
1408	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1409	return VERR_INVALID_PARAMETER;
1410	return PDMR0DeviceCallReqHandler(pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1411	}
1412
1413	/*
1414	* Requests to the internal networking service.
1415	*/
1416	case VMMR0_DO_INTNET_OPEN:
1417	{
1418	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1419	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1420	return VERR_INVALID_PARAMETER;
1421	return IntNetR0OpenReq(pSession, pReq);
1422	}
1423
1424	case VMMR0_DO_INTNET_IF_CLOSE:
1425	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1426	return VERR_INVALID_PARAMETER;
1427	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1428
1429	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1430	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1431	return VERR_INVALID_PARAMETER;
1432	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1433
1434	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1435	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1436	return VERR_INVALID_PARAMETER;
1437	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1438
1439	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1440	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1441	return VERR_INVALID_PARAMETER;
1442	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1443
1444	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1445	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1446	return VERR_INVALID_PARAMETER;
1447	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1448
1449	case VMMR0_DO_INTNET_IF_SEND:
1450	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1451	return VERR_INVALID_PARAMETER;
1452	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1453
1454	case VMMR0_DO_INTNET_IF_WAIT:
1455	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1456	return VERR_INVALID_PARAMETER;
1457	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1458
1459	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
1460	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1461	return VERR_INVALID_PARAMETER;
1462	return IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
1463
1464	#ifdef VBOX_WITH_PCI_PASSTHROUGH
1465	/*
1466	* Requests to host PCI driver service.
1467	*/
1468	case VMMR0_DO_PCIRAW_REQ:
1469	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1470	return VERR_INVALID_PARAMETER;
1471	return PciRawR0ProcessReq(pSession, pVM, (PPCIRAWSENDREQ)pReqHdr);
1472	#endif
1473	/*
1474	* For profiling.
1475	*/
1476	case VMMR0_DO_NOP:
1477	case VMMR0_DO_SLOW_NOP:
1478	return VINF_SUCCESS;
1479
1480	/*
1481	* For testing Ring-0 APIs invoked in this environment.
1482	*/
1483	case VMMR0_DO_TESTS:
1484	/** @todo make new test */
1485	return VINF_SUCCESS;
1486
1487
1488	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1489	case VMMR0_DO_TEST_SWITCHER3264:
1490	if (idCpu == NIL_VMCPUID)
1491	return VERR_INVALID_CPU_ID;
1492	return HMR0TestSwitcher3264(pVM);
1493	#endif
1494	default:
1495	/*
1496	* We're returning VERR_NOT_SUPPORT here so we've got something else
1497	* than -1 which the interrupt gate glue code might return.
1498	*/
1499	Log(("operation %#x is not supported\n", enmOperation));
1500	return VERR_NOT_SUPPORTED;
1501	}
1502	}
1503
1504
1505	/**
1506	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1507	*/
1508	typedef struct VMMR0ENTRYEXARGS
1509	{
1510	PVM pVM;
1511	VMCPUID idCpu;
1512	VMMR0OPERATION enmOperation;
1513	PSUPVMMR0REQHDR pReq;
1514	uint64_t u64Arg;
1515	PSUPDRVSESSION pSession;
1516	} VMMR0ENTRYEXARGS;
1517	/** Pointer to a vmmR0EntryExWrapper argument package. */
1518	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1519
1520	/**
1521	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1522	*
1523	* @returns VBox status code.
1524	* @param pvArgs The argument package
1525	*/
1526	static DECLCALLBACK(int) vmmR0EntryExWrapper(void *pvArgs)
1527	{
1528	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1529	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1530	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1531	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1532	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1533	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1534	}
1535
1536
1537	/**
1538	* The Ring 0 entry point, called by the support library (SUP).
1539	*
1540	* @returns VBox status code.
1541	* @param pVM Pointer to the VM.
1542	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1543	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1544	* @param enmOperation Which operation to execute.
1545	* @param pReq Pointer to the SUPVMMR0REQHDR packet. Optional.
1546	* @param u64Arg Some simple constant argument.
1547	* @param pSession The session of the caller.
1548	* @remarks Assume called with interrupts _enabled_.
1549	*/
1550	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1551	{
1552	/*
1553	* Requests that should only happen on the EMT thread will be
1554	* wrapped in a setjmp so we can assert without causing trouble.
1555	*/
1556	if ( VALID_PTR(pVM)
1557	&& pVM->pVMR0
1558	&& idCpu < pVM->cCpus)
1559	{
1560	switch (enmOperation)
1561	{
1562	/* These might/will be called before VMMR3Init. */
1563	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1564	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1565	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1566	case VMMR0_DO_GMM_FREE_PAGES:
1567	case VMMR0_DO_GMM_BALLOONED_PAGES:
1568	/* On the mac we might not have a valid jmp buf, so check these as well. */
1569	case VMMR0_DO_VMMR0_INIT:
1570	case VMMR0_DO_VMMR0_TERM:
1571	{
1572	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1573
1574	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1575	break;
1576
1577	/** @todo validate this EMT claim... GVM knows. */
1578	VMMR0ENTRYEXARGS Args;
1579	Args.pVM = pVM;
1580	Args.idCpu = idCpu;
1581	Args.enmOperation = enmOperation;
1582	Args.pReq = pReq;
1583	Args.u64Arg = u64Arg;
1584	Args.pSession = pSession;
1585	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1586	}
1587
1588	default:
1589	break;
1590	}
1591	}
1592	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1593	}
1594
1595
1596	/**
1597	* Checks whether we've armed the ring-0 long jump machinery.
1598	*
1599	* @returns @c true / @c false
1600	* @param pVCpu Pointer to the VMCPU.
1601	* @thread EMT
1602	* @sa VMMIsLongJumpArmed
1603	*/
1604	VMMR0_INT_DECL(bool) VMMR0IsLongJumpArmed(PVMCPU pVCpu)
1605	{
1606	#ifdef RT_ARCH_X86
1607	return pVCpu->vmm.s.CallRing3JmpBufR0.eip
1608	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1609	#else
1610	return pVCpu->vmm.s.CallRing3JmpBufR0.rip
1611	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1612	#endif
1613	}
1614
1615
1616	/**
1617	* Checks whether we've done a ring-3 long jump.
1618	*
1619	* @returns @c true / @c false
1620	* @param pVCpu Pointer to the VMCPU.
1621	* @thread EMT
1622	*/
1623	VMMR0_INT_DECL(bool) VMMR0IsInRing3LongJump(PVMCPU pVCpu)
1624	{
1625	return pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1626	}
1627
1628
1629	/**
1630	* Internal R0 logger worker: Flush logger.
1631	*
1632	* @param pLogger The logger instance to flush.
1633	* @remark This function must be exported!
1634	*/
1635	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1636	{
1637	#ifdef LOG_ENABLED
1638	/*
1639	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1640	* (This is a bit paranoid code.)
1641	*/
1642	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1643	if ( !VALID_PTR(pR0Logger)
1644	\|\| !VALID_PTR(pR0Logger + 1)
1645	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1646	{
1647	# ifdef DEBUG
1648	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1649	# endif
1650	return;
1651	}
1652	if (pR0Logger->fFlushingDisabled)
1653	return; /* quietly */
1654
1655	PVM pVM = pR0Logger->pVM;
1656	if ( !VALID_PTR(pVM)
1657	\|\| pVM->pVMR0 != pVM)
1658	{
1659	# ifdef DEBUG
1660	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1661	# endif
1662	return;
1663	}
1664
1665	PVMCPU pVCpu = VMMGetCpu(pVM);
1666	if (pVCpu)
1667	{
1668	/*
1669	* Check that the jump buffer is armed.
1670	*/
1671	# ifdef RT_ARCH_X86
1672	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1673	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1674	# else
1675	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1676	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1677	# endif
1678	{
1679	# ifdef DEBUG
1680	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1681	# endif
1682	return;
1683	}
1684	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1685	}
1686	# ifdef DEBUG
1687	else
1688	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
1689	# endif
1690	#endif
1691	}
1692
1693	/**
1694	* Internal R0 logger worker: Custom prefix.
1695	*
1696	* @returns Number of chars written.
1697	*
1698	* @param pLogger The logger instance.
1699	* @param pchBuf The output buffer.
1700	* @param cchBuf The size of the buffer.
1701	* @param pvUser User argument (ignored).
1702	*/
1703	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1704	{
1705	NOREF(pvUser);
1706	#ifdef LOG_ENABLED
1707	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1708	if ( !VALID_PTR(pR0Logger)
1709	\|\| !VALID_PTR(pR0Logger + 1)
1710	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1711	\|\| cchBuf < 2)
1712	return 0;
1713
1714	static const char s_szHex[17] = "0123456789abcdef";
1715	VMCPUID const idCpu = pR0Logger->idCpu;
1716	pchBuf[1] = s_szHex[ idCpu & 15];
1717	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1718
1719	return 2;
1720	#else
1721	return 0;
1722	#endif
1723	}
1724
1725	#ifdef LOG_ENABLED
1726
1727	/**
1728	* Disables flushing of the ring-0 debug log.
1729	*
1730	* @param pVCpu Pointer to the VMCPU.
1731	*/
1732	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1733	{
1734	if (pVCpu->vmm.s.pR0LoggerR0)
1735	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1736	}
1737
1738
1739	/**
1740	* Enables flushing of the ring-0 debug log.
1741	*
1742	* @param pVCpu Pointer to the VMCPU.
1743	*/
1744	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1745	{
1746	if (pVCpu->vmm.s.pR0LoggerR0)
1747	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1748	}
1749
1750
1751	/**
1752	* Checks if log flushing is disabled or not.
1753	*
1754	* @param pVCpu Pointer to the VMCPU.
1755	*/
1756	VMMR0DECL(bool) VMMR0IsLogFlushDisabled(PVMCPU pVCpu)
1757	{
1758	if (pVCpu->vmm.s.pR0LoggerR0)
1759	return pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled;
1760	return true;
1761	}
1762	#endif /* LOG_ENABLED */
1763
1764	/**
1765	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1766	*
1767	* @returns true if the breakpoint should be hit, false if it should be ignored.
1768	*/
1769	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1770	{
1771	#if 0
1772	return true;
1773	#else
1774	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1775	if (pVM)
1776	{
1777	PVMCPU pVCpu = VMMGetCpu(pVM);
1778
1779	if (pVCpu)
1780	{
1781	#ifdef RT_ARCH_X86
1782	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1783	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1784	#else
1785	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1786	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1787	#endif
1788	{
1789	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1790	return RT_FAILURE_NP(rc);
1791	}
1792	}
1793	}
1794	#ifdef RT_OS_LINUX
1795	return true;
1796	#else
1797	return false;
1798	#endif
1799	#endif
1800	}
1801
1802
1803	/**
1804	* Override this so we can push it up to ring-3.
1805	*
1806	* @param pszExpr Expression. Can be NULL.
1807	* @param uLine Location line number.
1808	* @param pszFile Location file name.
1809	* @param pszFunction Location function name.
1810	*/
1811	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1812	{
1813	/*
1814	* To the log.
1815	*/
1816	LogAlways(("\n!!R0-Assertion Failed!!\n"
1817	"Expression: %s\n"
1818	"Location : %s(%d) %s\n",
1819	pszExpr, pszFile, uLine, pszFunction));
1820
1821	/*
1822	* To the global VMM buffer.
1823	*/
1824	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1825	if (pVM)
1826	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1827	"\n!!R0-Assertion Failed!!\n"
1828	"Expression: %s\n"
1829	"Location : %s(%d) %s\n",
1830	pszExpr, pszFile, uLine, pszFunction);
1831
1832	/*
1833	* Continue the normal way.
1834	*/
1835	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1836	}
1837
1838
1839	/**
1840	* Callback for RTLogFormatV which writes to the ring-3 log port.
1841	* See PFNLOGOUTPUT() for details.
1842	*/
1843	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1844	{
1845	for (size_t i = 0; i < cbChars; i++)
1846	LogAlways(("%c", pachChars[i]));
1847
1848	NOREF(pv);
1849	return cbChars;
1850	}
1851
1852
1853	/**
1854	* Override this so we can push it up to ring-3.
1855	*
1856	* @param pszFormat The format string.
1857	* @param va Arguments.
1858	*/
1859	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1860	{
1861	va_list vaCopy;
1862
1863	/*
1864	* Push the message to the loggers.
1865	*/
1866	PRTLOGGER pLog = RTLogGetDefaultInstance(); /* Don't initialize it here... */
1867	if (pLog)
1868	{
1869	va_copy(vaCopy, va);
1870	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1871	va_end(vaCopy);
1872	}
1873	pLog = RTLogRelDefaultInstance();
1874	if (pLog)
1875	{
1876	va_copy(vaCopy, va);
1877	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1878	va_end(vaCopy);
1879	}
1880
1881	/*
1882	* Push it to the global VMM buffer.
1883	*/
1884	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1885	if (pVM)
1886	{
1887	va_copy(vaCopy, va);
1888	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1889	va_end(vaCopy);
1890	}
1891
1892	/*
1893	* Continue the normal way.
1894	*/
1895	RTAssertMsg2V(pszFormat, va);
1896	}
1897

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 53632

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