VMMR0.cpp@ 48025

Last change on this file since 48025 was 48006, checked in by vboxsync, 11 years ago
VMMR0ThreadCtxHooksCreate: Disabled the preemption hooks on solaris for the moment as the driver seems unwilling to unload after they were enabled.
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File size: 62.6 KB

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1	/* $Id: VMMR0.cpp 48006 2013-08-22 19:41:15Z 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/intnet.h>
39	#include <VBox/vmm/hm.h>
40	#include <VBox/param.h>
41	#include <VBox/err.h>
42	#include <VBox/version.h>
43	#include <VBox/log.h>
44
45	#include <iprt/asm-amd64-x86.h>
46	#include <iprt/assert.h>
47	#include <iprt/crc.h>
48	#include <iprt/mp.h>
49	#include <iprt/once.h>
50	#include <iprt/stdarg.h>
51	#include <iprt/string.h>
52	#include <iprt/thread.h>
53	#include <iprt/timer.h>
54
55	#include "dtrace/VBoxVMM.h"
56
57
58	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
59	# pragma intrinsic(_AddressOfReturnAddress)
60	#endif
61
62
63	/*******************************************************************************
64	* Internal Functions *
65	*******************************************************************************/
66	RT_C_DECLS_BEGIN
67	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
68	extern uint64_t __udivdi3(uint64_t, uint64_t);
69	extern uint64_t __umoddi3(uint64_t, uint64_t);
70	#endif
71	RT_C_DECLS_END
72
73
74	/*******************************************************************************
75	* Global Variables *
76	*******************************************************************************/
77	/** Drag in necessary library bits.
78	* The runtime lives here (in VMMR0.r0) and VBoxDDR0.r0 links against us. /
79	PFNRT g_VMMGCDeps[] =
80	{
81	(PFNRT)RTCrc32,
82	(PFNRT)RTOnce,
83	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
84	(PFNRT)__udivdi3,
85	(PFNRT)__umoddi3,
86	#endif
87	NULL
88	};
89
90	#ifdef RT_OS_SOLARIS
91	/* Dependency information for the native solaris loader. */
92	extern "C" { char _depends_on[] = "vboxdrv"; }
93	#endif
94
95
96
97	/**
98	* Initialize the module.
99	* This is called when we're first loaded.
100	*
101	* @returns 0 on success.
102	* @returns VBox status on failure.
103	* @param hMod Image handle for use in APIs.
104	*/
105	DECLEXPORT(int) ModuleInit(void *hMod)
106	{
107	#ifdef VBOX_WITH_DTRACE_R0
108	/*
109	* The first thing to do is register the static tracepoints.
110	* (Deregistration is automatic.)
111	*/
112	int rc2 = SUPR0TracerRegisterModule(hMod, &g_VTGObjHeader);
113	if (RT_FAILURE(rc2))
114	return rc2;
115	#endif
116	LogFlow(("ModuleInit:\n"));
117
118	/*
119	* Initialize the VMM, GVMM, GMM, HM, PGM (Darwin) and INTNET.
120	*/
121	int rc = vmmInitFormatTypes();
122	if (RT_SUCCESS(rc))
123	{
124	rc = GVMMR0Init();
125	if (RT_SUCCESS(rc))
126	{
127	rc = GMMR0Init();
128	if (RT_SUCCESS(rc))
129	{
130	rc = HMR0Init();
131	if (RT_SUCCESS(rc))
132	{
133	rc = PGMRegisterStringFormatTypes();
134	if (RT_SUCCESS(rc))
135	{
136	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
137	rc = PGMR0DynMapInit();
138	#endif
139	if (RT_SUCCESS(rc))
140	{
141	rc = IntNetR0Init();
142	if (RT_SUCCESS(rc))
143	{
144	#ifdef VBOX_WITH_PCI_PASSTHROUGH
145	rc = PciRawR0Init();
146	#endif
147	if (RT_SUCCESS(rc))
148	{
149	rc = CPUMR0ModuleInit();
150	if (RT_SUCCESS(rc))
151	{
152	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
153	rc = vmmR0TripleFaultHackInit();
154	if (RT_SUCCESS(rc))
155	#endif
156	{
157	LogFlow(("ModuleInit: returns success.\n"));
158	return VINF_SUCCESS;
159	}
160
161	/*
162	* Bail out.
163	*/
164	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
165	vmmR0TripleFaultHackTerm();
166	#endif
167	}
168	else
169	LogRel(("ModuleInit: CPUMR0ModuleInit -> %Rrc\n", rc));
170	#ifdef VBOX_WITH_PCI_PASSTHROUGH
171	PciRawR0Term();
172	#endif
173	}
174	else
175	LogRel(("ModuleInit: PciRawR0Init -> %Rrc\n", rc));
176	IntNetR0Term();
177	}
178	else
179	LogRel(("ModuleInit: IntNetR0Init -> %Rrc\n", rc));
180	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
181	PGMR0DynMapTerm();
182	#endif
183	}
184	else
185	LogRel(("ModuleInit: PGMR0DynMapInit -> %Rrc\n", rc));
186	PGMDeregisterStringFormatTypes();
187	}
188	else
189	LogRel(("ModuleInit: PGMRegisterStringFormatTypes -> %Rrc\n", rc));
190	HMR0Term();
191	}
192	else
193	LogRel(("ModuleInit: HMR0Init -> %Rrc\n", rc));
194	GMMR0Term();
195	}
196	else
197	LogRel(("ModuleInit: GMMR0Init -> %Rrc\n", rc));
198	GVMMR0Term();
199	}
200	else
201	LogRel(("ModuleInit: GVMMR0Init -> %Rrc\n", rc));
202	vmmTermFormatTypes();
203	}
204	else
205	LogRel(("ModuleInit: vmmInitFormatTypes -> %Rrc\n", rc));
206
207	LogFlow(("ModuleInit: failed %Rrc\n", rc));
208	return rc;
209	}
210
211
212	/**
213	* Terminate the module.
214	* This is called when we're finally unloaded.
215	*
216	* @param hMod Image handle for use in APIs.
217	*/
218	DECLEXPORT(void) ModuleTerm(void *hMod)
219	{
220	LogFlow(("ModuleTerm:\n"));
221
222	/*
223	* Terminate the CPUM module (Local APIC cleanup).
224	*/
225	CPUMR0ModuleTerm();
226
227	/*
228	* Terminate the internal network service.
229	*/
230	IntNetR0Term();
231
232	/*
233	* PGM (Darwin), HM and PciRaw global cleanup.
234	*/
235	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
236	PGMR0DynMapTerm();
237	#endif
238	#ifdef VBOX_WITH_PCI_PASSTHROUGH
239	PciRawR0Term();
240	#endif
241	PGMDeregisterStringFormatTypes();
242	HMR0Term();
243	#ifdef VBOX_WITH_TRIPLE_FAULT_HACK
244	vmmR0TripleFaultHackTerm();
245	#endif
246
247	/*
248	* Destroy the GMM and GVMM instances.
249	*/
250	GMMR0Term();
251	GVMMR0Term();
252
253	vmmTermFormatTypes();
254
255	LogFlow(("ModuleTerm: returns\n"));
256	}
257
258
259	/**
260	* Initiates the R0 driver for a particular VM instance.
261	*
262	* @returns VBox status code.
263	*
264	* @param pVM Pointer to the VM.
265	* @param uSvnRev The SVN revision of the ring-3 part.
266	* @param uBuildType Build type indicator.
267	* @thread EMT.
268	*/
269	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev, uint32_t uBuildType)
270	{
271	/*
272	* Match the SVN revisions and build type.
273	*/
274	if (uSvnRev != VMMGetSvnRev())
275	{
276	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
277	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
278	return VERR_VMM_R0_VERSION_MISMATCH;
279	}
280	if (uBuildType != vmmGetBuildType())
281	{
282	LogRel(("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType()));
283	SUPR0Printf("VMMR0InitVM: Build type mismatch, r3=%#x r0=%#x\n", uBuildType, vmmGetBuildType());
284	return VERR_VMM_R0_VERSION_MISMATCH;
285	}
286	if ( !VALID_PTR(pVM)
287	\|\| pVM->pVMR0 != pVM)
288	return VERR_INVALID_PARAMETER;
289
290
291	#ifdef LOG_ENABLED
292	/*
293	* Register the EMT R0 logger instance for VCPU 0.
294	*/
295	PVMCPU pVCpu = &pVM->aCpus[0];
296
297	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
298	if (pR0Logger)
299	{
300	# if 0 /* testing of the logger. */
301	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
302	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
303	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
304	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
305
306	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
307	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
308	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
309	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
310
311	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
312	LogCom(("vmmR0InitVM: returned successfully from direct logger call.\n"));
313	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
314	LogCom(("vmmR0InitVM: returned successfully from direct flush call.\n"));
315
316	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
317	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
318	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
319	LogCom(("vmmR0InitVM: returned successfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
320	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
321	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
322
323	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
324	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
325
326	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
327	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
328	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
329	# endif
330	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
331	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
332	pR0Logger->fRegistered = true;
333	}
334	#endif /* LOG_ENABLED */
335
336	/*
337	* Check if the host supports high resolution timers or not.
338	*/
339	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
340	&& !RTTimerCanDoHighResolution())
341	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
342
343	/*
344	* Initialize the per VM data for GVMM and GMM.
345	*/
346	int rc = GVMMR0InitVM(pVM);
347	// if (RT_SUCCESS(rc))
348	// rc = GMMR0InitPerVMData(pVM);
349	if (RT_SUCCESS(rc))
350	{
351	/*
352	* Init HM, CPUM and PGM (Darwin only).
353	*/
354	rc = HMR0InitVM(pVM);
355	if (RT_SUCCESS(rc))
356	{
357	rc = CPUMR0InitVM(pVM);
358	if (RT_SUCCESS(rc))
359	{
360	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
361	rc = PGMR0DynMapInitVM(pVM);
362	#endif
363	if (RT_SUCCESS(rc))
364	{
365	#ifdef VBOX_WITH_PCI_PASSTHROUGH
366	rc = PciRawR0InitVM(pVM);
367	#endif
368	if (RT_SUCCESS(rc))
369	{
370	GVMMR0DoneInitVM(pVM);
371	return rc;
372	}
373	}
374
375	/* bail out */
376	}
377	#ifdef VBOX_WITH_PCI_PASSTHROUGH
378	PciRawR0TermVM(pVM);
379	#endif
380	HMR0TermVM(pVM);
381	}
382	}
383
384
385	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
386	return rc;
387	}
388
389
390	/**
391	* Terminates the R0 bits for a particular VM instance.
392	*
393	* This is normally called by ring-3 as part of the VM termination process, but
394	* may alternatively be called during the support driver session cleanup when
395	* the VM object is destroyed (see GVMM).
396	*
397	* @returns VBox status code.
398	*
399	* @param pVM Pointer to the VM.
400	* @param pGVM Pointer to the global VM structure. Optional.
401	* @thread EMT or session clean up thread.
402	*/
403	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
404	{
405	#ifdef VBOX_WITH_PCI_PASSTHROUGH
406	PciRawR0TermVM(pVM);
407	#endif
408
409
410	/*
411	* Tell GVMM what we're up to and check that we only do this once.
412	*/
413	if (GVMMR0DoingTermVM(pVM, pGVM))
414	{
415	/** @todo I wish to call PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu])
416	* here to make sure we don't leak any shared pages if we crash... */
417	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
418	PGMR0DynMapTermVM(pVM);
419	#endif
420	HMR0TermVM(pVM);
421	}
422
423	/*
424	* Deregister the logger.
425	*/
426	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
427	return VINF_SUCCESS;
428	}
429
430
431	/**
432	* Creates R0 thread-context hooks for the current EMT thread.
433	*
434	* @returns VBox status code.
435	*
436	* @param pVCpu Pointer to the VMCPU.
437	* @thread EMT.
438	*/
439	VMMR0DECL(int) VMMR0ThreadCtxHooksCreate(PVMCPU pVCpu)
440	{
441	VMCPU_ASSERT_EMT(pVCpu);
442	Assert(pVCpu->vmm.s.hR0ThreadCtx == NIL_RTTHREADCTX);
443	#if defined(RT_OS_LINUX) /\|\| defined(RT_OS_SOLARIS) - leaves the driver loaded, reenable when fixed. /
444	int rc = RTThreadCtxHooksCreate(&pVCpu->vmm.s.hR0ThreadCtx);
445	if ( RT_FAILURE(rc)
446	&& rc != VERR_NOT_SUPPORTED)
447	{
448	Log(("RTThreadCtxHooksCreate failed! rc=%Rrc pVCpu=%p idCpu=%RU32\n", rc, pVCpu, pVCpu->idCpu));
449	return rc;
450	}
451	#endif
452
453	return VINF_SUCCESS;
454	}
455
456
457	/**
458	* Releases the object reference for the thread-context hook.
459	*
460	* @param pVCpu Pointer to the VMCPU.
461	* @remarks Can be called from any thread.
462	*/
463	VMMR0DECL(void) VMMR0ThreadCtxHooksRelease(PVMCPU pVCpu)
464	{
465	RTThreadCtxHooksRelease(pVCpu->vmm.s.hR0ThreadCtx);
466	}
467
468
469	/**
470	* Registers the thread-context hook for this VCPU.
471	*
472	* @returns VBox status code.
473	* @param pVCpu Pointer to the VMCPU.
474	* @param pfnThreadHook Pointer to the thread-context callback.
475	*
476	* @thread EMT.
477	*/
478	VMMR0DECL(int) VMMR0ThreadCtxHooksRegister(PVMCPU pVCpu, PFNRTTHREADCTXHOOK pfnThreadHook)
479	{
480	VMCPU_ASSERT_EMT(pVCpu);
481	return RTThreadCtxHooksRegister(pVCpu->vmm.s.hR0ThreadCtx, pfnThreadHook, pVCpu);
482	}
483
484
485	/**
486	* Deregisters the thread-context hook for this VCPU.
487	*
488	* @returns VBox status code.
489	* @param pVCpu Pointer to the VMCPU.
490	*
491	* @thread EMT.
492	*/
493	VMMR0DECL(int) VMMR0ThreadCtxHooksDeregister(PVMCPU pVCpu)
494	{
495	return RTThreadCtxHooksDeregister(pVCpu->vmm.s.hR0ThreadCtx);
496	}
497
498
499	/**
500	* Whether thread-context hooks are created (implying they're supported) on this
501	* platform.
502	*
503	* @returns true if the hooks are created, false otherwise.
504	* @param pVCpu Pointer to the VMCPU.
505	*
506	* @remarks Can be called from any thread.
507	*/
508	VMMR0DECL(bool) VMMR0ThreadCtxHooksAreCreated(PVMCPU pVCpu)
509	{
510	return pVCpu->vmm.s.hR0ThreadCtx != NIL_RTTHREADCTX;
511	}
512
513
514	/**
515	* Whether thread-context hooks are registered for this VCPU.
516	*
517	* @returns true if registered, false otherwise.
518	* @param pVCpu Pointer to the VMCPU.
519	*/
520	VMMR0DECL(bool) VMMR0ThreadCtxHooksAreRegistered(PVMCPU pVCpu)
521	{
522	return RTThreadCtxHooksAreRegistered(pVCpu->vmm.s.hR0ThreadCtx);
523	}
524
525
526	/**
527	* VMM ring-0 thread-context callback.
528	*
529	* This does common HM state updating and calls the HM-specific thread-context
530	* callback.
531	*
532	* @param enmEvent The thread-context event.
533	* @param pvUser Opaque pointer to the VMCPU.
534	*/
535	static void vmmR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, void *pvUser)
536	{
537	PVMCPU pVCpu = (PVMCPU)pvUser;
538
539	switch (enmEvent)
540	{
541	case RTTHREADCTXEVENT_RESUMED:
542	{
543	/** @todo Linux may call us with preemption enabled (really!) but technically we
544	* cannot get preempted here, otherwise we end up in an infinite recursion
545	* scenario (i.e. preempted in resume hook -> preempt hook -> resume hook... ad
546	* infinitum). Let's just disable preemption for now...
547	*/
548	bool fPreemptDisabled = false;
549	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
550	if (RTThreadPreemptIsEnabled(NIL_RTTHREAD))
551	{
552	RTThreadPreemptDisable(&PreemptState);
553	fPreemptDisabled = true;
554	}
555
556	/* We need to update the VCPU <-> host CPU mapping. */
557	RTCPUID idHostCpu = RTMpCpuId();
558	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
559
560	/* Invoke the HM-specific thread-context callback. */
561	HMR0ThreadCtxCallback(enmEvent, pvUser);
562
563	/* Restore preemption. */
564	if (fPreemptDisabled)
565	RTThreadPreemptRestore(&PreemptState);
566	break;
567	}
568
569	case RTTHREADCTXEVENT_PREEMPTING:
570	/*
571	* Sigh. See VMMGetCpu() used by VMCPU_ASSERT_EMT(). We cannot let several VCPUs
572	* have the same host CPU associated with it.
573	*/
574	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
575	/* fallthru, no break! */
576	default:
577	/* Invoke the HM-specific thread-context callback. */
578	HMR0ThreadCtxCallback(enmEvent, pvUser);
579	break;
580	}
581
582	}
583
584
585	#ifdef VBOX_WITH_STATISTICS
586	/**
587	* Record return code statistics
588	* @param pVM Pointer to the VM.
589	* @param pVCpu Pointer to the VMCPU.
590	* @param rc The status code.
591	*/
592	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
593	{
594	/*
595	* Collect statistics.
596	*/
597	switch (rc)
598	{
599	case VINF_SUCCESS:
600	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
601	break;
602	case VINF_EM_RAW_INTERRUPT:
603	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
604	break;
605	case VINF_EM_RAW_INTERRUPT_HYPER:
606	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
607	break;
608	case VINF_EM_RAW_GUEST_TRAP:
609	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
610	break;
611	case VINF_EM_RAW_RING_SWITCH:
612	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
613	break;
614	case VINF_EM_RAW_RING_SWITCH_INT:
615	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
616	break;
617	case VINF_EM_RAW_STALE_SELECTOR:
618	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
619	break;
620	case VINF_EM_RAW_IRET_TRAP:
621	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
622	break;
623	case VINF_IOM_R3_IOPORT_READ:
624	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
625	break;
626	case VINF_IOM_R3_IOPORT_WRITE:
627	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
628	break;
629	case VINF_IOM_R3_MMIO_READ:
630	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
631	break;
632	case VINF_IOM_R3_MMIO_WRITE:
633	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
634	break;
635	case VINF_IOM_R3_MMIO_READ_WRITE:
636	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
637	break;
638	case VINF_PATM_HC_MMIO_PATCH_READ:
639	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
640	break;
641	case VINF_PATM_HC_MMIO_PATCH_WRITE:
642	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
643	break;
644	case VINF_EM_RAW_EMULATE_INSTR:
645	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
646	break;
647	case VINF_EM_RAW_EMULATE_IO_BLOCK:
648	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
649	break;
650	case VINF_PATCH_EMULATE_INSTR:
651	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
652	break;
653	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
654	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
655	break;
656	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
657	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
658	break;
659	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
660	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
661	break;
662	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
663	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
664	break;
665	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
666	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
667	break;
668	case VINF_CSAM_PENDING_ACTION:
669	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
670	break;
671	case VINF_PGM_SYNC_CR3:
672	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
673	break;
674	case VINF_PATM_PATCH_INT3:
675	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
676	break;
677	case VINF_PATM_PATCH_TRAP_PF:
678	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
679	break;
680	case VINF_PATM_PATCH_TRAP_GP:
681	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
682	break;
683	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
684	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
685	break;
686	case VINF_EM_RESCHEDULE_REM:
687	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
688	break;
689	case VINF_EM_RAW_TO_R3:
690	if (VM_FF_IS_PENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
691	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
692	else if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
693	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
694	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_QUEUES))
695	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
696	else if (VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS))
697	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
698	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
699	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
700	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TIMER))
701	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
702	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
703	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
704	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TO_R3))
705	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
706	else
707	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
708	break;
709
710	case VINF_EM_RAW_TIMER_PENDING:
711	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
712	break;
713	case VINF_EM_RAW_INTERRUPT_PENDING:
714	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
715	break;
716	case VINF_VMM_CALL_HOST:
717	switch (pVCpu->vmm.s.enmCallRing3Operation)
718	{
719	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
720	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
721	break;
722	case VMMCALLRING3_PDM_LOCK:
723	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
724	break;
725	case VMMCALLRING3_PGM_POOL_GROW:
726	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
727	break;
728	case VMMCALLRING3_PGM_LOCK:
729	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
730	break;
731	case VMMCALLRING3_PGM_MAP_CHUNK:
732	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
733	break;
734	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
735	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
736	break;
737	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
738	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
739	break;
740	case VMMCALLRING3_VMM_LOGGER_FLUSH:
741	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
742	break;
743	case VMMCALLRING3_VM_SET_ERROR:
744	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
745	break;
746	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
747	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
748	break;
749	case VMMCALLRING3_VM_R0_ASSERTION:
750	default:
751	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
752	break;
753	}
754	break;
755	case VINF_PATM_DUPLICATE_FUNCTION:
756	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
757	break;
758	case VINF_PGM_CHANGE_MODE:
759	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
760	break;
761	case VINF_PGM_POOL_FLUSH_PENDING:
762	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
763	break;
764	case VINF_EM_PENDING_REQUEST:
765	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
766	break;
767	case VINF_EM_HM_PATCH_TPR_INSTR:
768	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
769	break;
770	default:
771	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
772	break;
773	}
774	}
775	#endif /* VBOX_WITH_STATISTICS */
776
777
778	/**
779	* Unused ring-0 entry point that used to be called from the interrupt gate.
780	*
781	* Will be removed one of the next times we do a major SUPDrv version bump.
782	*
783	* @returns VBox status code.
784	* @param pVM Pointer to the VM.
785	* @param enmOperation Which operation to execute.
786	* @param pvArg Argument to the operation.
787	* @remarks Assume called with interrupts disabled.
788	*/
789	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
790	{
791	/*
792	* We're returning VERR_NOT_SUPPORT here so we've got something else
793	* than -1 which the interrupt gate glue code might return.
794	*/
795	Log(("operation %#x is not supported\n", enmOperation));
796	NOREF(enmOperation); NOREF(pvArg); NOREF(pVM);
797	return VERR_NOT_SUPPORTED;
798	}
799
800
801	/**
802	* The Ring 0 entry point, called by the fast-ioctl path.
803	*
804	* @param pVM Pointer to the VM.
805	* The return code is stored in pVM->vmm.s.iLastGZRc.
806	* @param idCpu The Virtual CPU ID of the calling EMT.
807	* @param enmOperation Which operation to execute.
808	* @remarks Assume called with interrupts _enabled_.
809	*/
810	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
811	{
812	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
813	return;
814	PVMCPU pVCpu = &pVM->aCpus[idCpu];
815
816	switch (enmOperation)
817	{
818	/*
819	* Switch to GC and run guest raw mode code.
820	* Disable interrupts before doing the world switch.
821	*/
822	case VMMR0_DO_RAW_RUN:
823	{
824	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
825	/* Some safety precautions first. */
826	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
827	{
828	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
829	break;
830	}
831	#endif
832
833	/* Disable preemption and update the periodic preemption timer. */
834	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
835	RTThreadPreemptDisable(&PreemptState);
836	RTCPUID idHostCpu = RTMpCpuId();
837	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
838	CPUMR0SetLApic(pVCpu, idHostCpu);
839	#endif
840	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
841	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
842	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
843
844	/* We might need to disable VT-x if the active switcher turns off paging. */
845	bool fVTxDisabled;
846	int rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
847	if (RT_SUCCESS(rc))
848	{
849	RTCCUINTREG uFlags = ASMIntDisableFlags();
850
851	for (;;)
852	{
853	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
854	TMNotifyStartOfExecution(pVCpu);
855
856	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
857	pVCpu->vmm.s.iLastGZRc = rc;
858
859	TMNotifyEndOfExecution(pVCpu);
860	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
861
862	if (rc != VINF_VMM_CALL_TRACER)
863	break;
864	SUPR0TracerUmodProbeFire(pVM->pSession, &pVCpu->vmm.s.TracerCtx);
865	}
866
867	/* Re-enable VT-x if previously turned off. */
868	HMR0LeaveSwitcher(pVM, fVTxDisabled);
869
870	if ( rc == VINF_EM_RAW_INTERRUPT
871	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
872	TRPMR0DispatchHostInterrupt(pVM);
873
874	ASMSetFlags(uFlags);
875
876	#ifdef VBOX_WITH_STATISTICS
877	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
878	vmmR0RecordRC(pVM, pVCpu, rc);
879	#endif
880	}
881	else
882	pVCpu->vmm.s.iLastGZRc = rc;
883	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
884	RTThreadPreemptRestore(&PreemptState);
885	break;
886	}
887
888	/*
889	* Run guest code using the available hardware acceleration technology.
890	*
891	* Disable interrupts before we do anything interesting. On Windows we avoid
892	* this by having the support driver raise the IRQL before calling us, this way
893	* we hope to get away with page faults and later calling into the kernel.
894	*/
895	case VMMR0_DO_HM_RUN:
896	{
897	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
898	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
899	RTThreadPreemptDisable(&PreemptState);
900	#elif !defined(RT_OS_WINDOWS)
901	RTCCUINTREG uFlags = ASMIntDisableFlags();
902	#endif
903	/* Update the VCPU <-> host CPU mapping before doing anything else. */
904	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
905	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
906	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
907	#ifdef LOG_ENABLED
908	if (pVCpu->idCpu > 0)
909	{
910	/* Lazy registration of ring 0 loggers. */
911	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
912	if ( pR0Logger
913	&& !pR0Logger->fRegistered)
914	{
915	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
916	pR0Logger->fRegistered = true;
917	}
918	}
919	#endif
920
921	int rc;
922	bool fPreemptRestored = false;
923	if (!HMR0SuspendPending())
924	{
925	/* Register thread-context hooks if required. */
926	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
927	if ( VMMR0ThreadCtxHooksAreCreated(pVCpu)
928	&& !VMMR0ThreadCtxHooksAreRegistered(pVCpu))
929	{
930	rc = VMMR0ThreadCtxHooksRegister(pVCpu, vmmR0ThreadCtxCallback);
931	AssertRC(rc);
932	}
933	#endif
934
935	/* Enter HM context. */
936	rc = HMR0Enter(pVM, pVCpu);
937
938	/* When preemption hooks are in place, enable preemption now that we're in HM context. */
939	if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
940	{
941	fPreemptRestored = true;
942	RTThreadPreemptRestore(&PreemptState);
943	}
944
945	if (RT_SUCCESS(rc))
946	{
947	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
948
949	/* Setup the longjmp machinery and execute guest code. */
950	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HMR0RunGuestCode, pVM, pVCpu);
951
952	/* Leave HM context. This deregisters thread-context hooks if any. */
953	int rc2 = HMR0Leave(pVM, pVCpu);
954	AssertRC(rc2);
955
956	if (RT_UNLIKELY( VMCPU_GET_STATE(pVCpu) != VMCPUSTATE_STARTED_HM
957	&& RT_SUCCESS_NP(rc) && rc != VINF_VMM_CALL_HOST ))
958	{
959	/* Manual assert as normal assertions are going to crash in this case. */
960	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
961	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
962	"Got VMCPU state %d expected %d.\n", VMCPU_GET_STATE(pVCpu), VMCPUSTATE_STARTED_HM);
963	rc = VERR_VMM_WRONG_HM_VMCPU_STATE;
964	}
965	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
966	}
967	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
968	}
969	else
970	{
971	/* System is about to go into suspend mode; go back to ring 3. */
972	rc = VINF_EM_RAW_INTERRUPT;
973	}
974	pVCpu->vmm.s.iLastGZRc = rc;
975
976	/* Clear the VCPU <-> host CPU mapping as we've left HM context. */
977	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
978
979	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
980	if (!fPreemptRestored)
981	RTThreadPreemptRestore(&PreemptState);
982	#elif !defined(RT_OS_WINDOWS)
983	ASMSetFlags(uFlags);
984	#endif
985
986	#ifdef VBOX_WITH_STATISTICS
987	vmmR0RecordRC(pVM, pVCpu, rc);
988	#endif
989	/* No special action required for external interrupts, just return. */
990	break;
991	}
992
993	/*
994	* For profiling.
995	*/
996	case VMMR0_DO_NOP:
997	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
998	break;
999
1000	/*
1001	* Impossible.
1002	*/
1003	default:
1004	AssertMsgFailed(("%#x\n", enmOperation));
1005	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
1006	break;
1007	}
1008	}
1009
1010
1011	/**
1012	* Validates a session or VM session argument.
1013	*
1014	* @returns true / false accordingly.
1015	* @param pVM Pointer to the VM.
1016	* @param pSession The session argument.
1017	*/
1018	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
1019	{
1020	/* This must be set! */
1021	if (!pSession)
1022	return false;
1023
1024	/* Only one out of the two. */
1025	if (pVM && pClaimedSession)
1026	return false;
1027	if (pVM)
1028	pClaimedSession = pVM->pSession;
1029	return pClaimedSession == pSession;
1030	}
1031
1032
1033	/**
1034	* VMMR0EntryEx worker function, either called directly or when ever possible
1035	* called thru a longjmp so we can exit safely on failure.
1036	*
1037	* @returns VBox status code.
1038	* @param pVM Pointer to the VM.
1039	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1040	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1041	* @param enmOperation Which operation to execute.
1042	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
1043	* The support driver validates this if it's present.
1044	* @param u64Arg Some simple constant argument.
1045	* @param pSession The session of the caller.
1046	* @remarks Assume called with interrupts _enabled_.
1047	*/
1048	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
1049	{
1050	/*
1051	* Common VM pointer validation.
1052	*/
1053	if (pVM)
1054	{
1055	if (RT_UNLIKELY( !VALID_PTR(pVM)
1056	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
1057	{
1058	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
1059	return VERR_INVALID_POINTER;
1060	}
1061	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
1062	\|\| pVM->enmVMState > VMSTATE_TERMINATED
1063	\|\| pVM->pVMR0 != pVM))
1064	{
1065	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
1066	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
1067	return VERR_INVALID_POINTER;
1068	}
1069
1070	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
1071	{
1072	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
1073	return VERR_INVALID_PARAMETER;
1074	}
1075	}
1076	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
1077	{
1078	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
1079	return VERR_INVALID_PARAMETER;
1080	}
1081
1082
1083	switch (enmOperation)
1084	{
1085	/*
1086	* GVM requests
1087	*/
1088	case VMMR0_DO_GVMM_CREATE_VM:
1089	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1090	return VERR_INVALID_PARAMETER;
1091	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
1092
1093	case VMMR0_DO_GVMM_DESTROY_VM:
1094	if (pReqHdr \|\| u64Arg)
1095	return VERR_INVALID_PARAMETER;
1096	return GVMMR0DestroyVM(pVM);
1097
1098	case VMMR0_DO_GVMM_REGISTER_VMCPU:
1099	{
1100	if (!pVM)
1101	return VERR_INVALID_PARAMETER;
1102	return GVMMR0RegisterVCpu(pVM, idCpu);
1103	}
1104
1105	case VMMR0_DO_GVMM_SCHED_HALT:
1106	if (pReqHdr)
1107	return VERR_INVALID_PARAMETER;
1108	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
1109
1110	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
1111	if (pReqHdr \|\| u64Arg)
1112	return VERR_INVALID_PARAMETER;
1113	return GVMMR0SchedWakeUp(pVM, idCpu);
1114
1115	case VMMR0_DO_GVMM_SCHED_POKE:
1116	if (pReqHdr \|\| u64Arg)
1117	return VERR_INVALID_PARAMETER;
1118	return GVMMR0SchedPoke(pVM, idCpu);
1119
1120	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
1121	if (u64Arg)
1122	return VERR_INVALID_PARAMETER;
1123	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
1124
1125	case VMMR0_DO_GVMM_SCHED_POLL:
1126	if (pReqHdr \|\| u64Arg > 1)
1127	return VERR_INVALID_PARAMETER;
1128	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
1129
1130	case VMMR0_DO_GVMM_QUERY_STATISTICS:
1131	if (u64Arg)
1132	return VERR_INVALID_PARAMETER;
1133	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
1134
1135	case VMMR0_DO_GVMM_RESET_STATISTICS:
1136	if (u64Arg)
1137	return VERR_INVALID_PARAMETER;
1138	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
1139
1140	/*
1141	* Initialize the R0 part of a VM instance.
1142	*/
1143	case VMMR0_DO_VMMR0_INIT:
1144	return vmmR0InitVM(pVM, RT_LODWORD(u64Arg), RT_HIDWORD(u64Arg));
1145
1146	/*
1147	* Terminate the R0 part of a VM instance.
1148	*/
1149	case VMMR0_DO_VMMR0_TERM:
1150	return VMMR0TermVM(pVM, NULL);
1151
1152	/*
1153	* Attempt to enable hm mode and check the current setting.
1154	*/
1155	case VMMR0_DO_HM_ENABLE:
1156	return HMR0EnableAllCpus(pVM);
1157
1158	/*
1159	* Setup the hardware accelerated session.
1160	*/
1161	case VMMR0_DO_HM_SETUP_VM:
1162	return HMR0SetupVM(pVM);
1163
1164	/*
1165	* Switch to RC to execute Hypervisor function.
1166	*/
1167	case VMMR0_DO_CALL_HYPERVISOR:
1168	{
1169	int rc;
1170	bool fVTxDisabled;
1171
1172	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1173	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
1174	return VERR_PGM_NO_CR3_SHADOW_ROOT;
1175	#endif
1176
1177	RTCCUINTREG fFlags = ASMIntDisableFlags();
1178
1179	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1180	RTCPUID idHostCpu = RTMpCpuId();
1181	CPUMR0SetLApic(&pVM->aCpus[0], idHostCpu);
1182	#endif
1183
1184	/* We might need to disable VT-x if the active switcher turns off paging. */
1185	rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
1186	if (RT_FAILURE(rc))
1187	return rc;
1188
1189	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
1190
1191	/* Re-enable VT-x if previously turned off. */
1192	HMR0LeaveSwitcher(pVM, fVTxDisabled);
1193
1194	/** @todo dispatch interrupts? */
1195	ASMSetFlags(fFlags);
1196	return rc;
1197	}
1198
1199	/*
1200	* PGM wrappers.
1201	*/
1202	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
1203	if (idCpu == NIL_VMCPUID)
1204	return VERR_INVALID_CPU_ID;
1205	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
1206
1207	case VMMR0_DO_PGM_FLUSH_HANDY_PAGES:
1208	if (idCpu == NIL_VMCPUID)
1209	return VERR_INVALID_CPU_ID;
1210	return PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu]);
1211
1212	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
1213	if (idCpu == NIL_VMCPUID)
1214	return VERR_INVALID_CPU_ID;
1215	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
1216
1217	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
1218	if (idCpu != 0)
1219	return VERR_INVALID_CPU_ID;
1220	return PGMR0PhysSetupIommu(pVM);
1221
1222	/*
1223	* GMM wrappers.
1224	*/
1225	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1226	if (u64Arg)
1227	return VERR_INVALID_PARAMETER;
1228	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
1229
1230	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1231	if (u64Arg)
1232	return VERR_INVALID_PARAMETER;
1233	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
1234
1235	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1236	if (u64Arg)
1237	return VERR_INVALID_PARAMETER;
1238	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
1239
1240	case VMMR0_DO_GMM_FREE_PAGES:
1241	if (u64Arg)
1242	return VERR_INVALID_PARAMETER;
1243	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1244
1245	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1246	if (u64Arg)
1247	return VERR_INVALID_PARAMETER;
1248	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1249
1250	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1251	if (u64Arg)
1252	return VERR_INVALID_PARAMETER;
1253	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
1254
1255	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1256	if (idCpu == NIL_VMCPUID)
1257	return VERR_INVALID_CPU_ID;
1258	if (u64Arg)
1259	return VERR_INVALID_PARAMETER;
1260	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1261
1262	case VMMR0_DO_GMM_BALLOONED_PAGES:
1263	if (u64Arg)
1264	return VERR_INVALID_PARAMETER;
1265	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1266
1267	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1268	if (u64Arg)
1269	return VERR_INVALID_PARAMETER;
1270	return GMMR0MapUnmapChunkReq(pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1271
1272	case VMMR0_DO_GMM_SEED_CHUNK:
1273	if (pReqHdr)
1274	return VERR_INVALID_PARAMETER;
1275	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
1276
1277	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1278	if (idCpu == NIL_VMCPUID)
1279	return VERR_INVALID_CPU_ID;
1280	if (u64Arg)
1281	return VERR_INVALID_PARAMETER;
1282	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1283
1284	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1285	if (idCpu == NIL_VMCPUID)
1286	return VERR_INVALID_CPU_ID;
1287	if (u64Arg)
1288	return VERR_INVALID_PARAMETER;
1289	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1290
1291	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1292	if (idCpu == NIL_VMCPUID)
1293	return VERR_INVALID_CPU_ID;
1294	if ( u64Arg
1295	\|\| pReqHdr)
1296	return VERR_INVALID_PARAMETER;
1297	return GMMR0ResetSharedModules(pVM, idCpu);
1298
1299	#ifdef VBOX_WITH_PAGE_SHARING
1300	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1301	{
1302	if (idCpu == NIL_VMCPUID)
1303	return VERR_INVALID_CPU_ID;
1304	if ( u64Arg
1305	\|\| pReqHdr)
1306	return VERR_INVALID_PARAMETER;
1307
1308	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1309	Assert(pVCpu->hNativeThreadR0 == RTThreadNativeSelf());
1310
1311	# ifdef DEBUG_sandervl
1312	/* 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). */
1313	/* Todo: this can have bad side effects for unexpected jumps back to r3. */
1314	int rc = GMMR0CheckSharedModulesStart(pVM);
1315	if (rc == VINF_SUCCESS)
1316	{
1317	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, GMMR0CheckSharedModules, pVM, pVCpu); /* this may resume code. */
1318	Assert( rc == VINF_SUCCESS
1319	\|\| (rc == VINF_VMM_CALL_HOST && pVCpu->vmm.s.enmCallRing3Operation == VMMCALLRING3_VMM_LOGGER_FLUSH));
1320	GMMR0CheckSharedModulesEnd(pVM);
1321	}
1322	# else
1323	int rc = GMMR0CheckSharedModules(pVM, pVCpu);
1324	# endif
1325	return rc;
1326	}
1327	#endif
1328
1329	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1330	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1331	if (u64Arg)
1332	return VERR_INVALID_PARAMETER;
1333	return GMMR0FindDuplicatePageReq(pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1334	#endif
1335
1336	case VMMR0_DO_GMM_QUERY_STATISTICS:
1337	if (u64Arg)
1338	return VERR_INVALID_PARAMETER;
1339	return GMMR0QueryStatisticsReq(pVM, (PGMMQUERYSTATISTICSSREQ)pReqHdr);
1340
1341	case VMMR0_DO_GMM_RESET_STATISTICS:
1342	if (u64Arg)
1343	return VERR_INVALID_PARAMETER;
1344	return GMMR0ResetStatisticsReq(pVM, (PGMMRESETSTATISTICSSREQ)pReqHdr);
1345
1346	/*
1347	* A quick GCFGM mock-up.
1348	*/
1349	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1350	case VMMR0_DO_GCFGM_SET_VALUE:
1351	case VMMR0_DO_GCFGM_QUERY_VALUE:
1352	{
1353	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1354	return VERR_INVALID_PARAMETER;
1355	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1356	if (pReq->Hdr.cbReq != sizeof(*pReq))
1357	return VERR_INVALID_PARAMETER;
1358	int rc;
1359	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1360	{
1361	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1362	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1363	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1364	}
1365	else
1366	{
1367	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1368	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1369	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1370	}
1371	return rc;
1372	}
1373
1374	/*
1375	* PDM Wrappers.
1376	*/
1377	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1378	{
1379	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1380	return VERR_INVALID_PARAMETER;
1381	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1382	}
1383
1384	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1385	{
1386	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1387	return VERR_INVALID_PARAMETER;
1388	return PDMR0DeviceCallReqHandler(pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1389	}
1390
1391	/*
1392	* Requests to the internal networking service.
1393	*/
1394	case VMMR0_DO_INTNET_OPEN:
1395	{
1396	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1397	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1398	return VERR_INVALID_PARAMETER;
1399	return IntNetR0OpenReq(pSession, pReq);
1400	}
1401
1402	case VMMR0_DO_INTNET_IF_CLOSE:
1403	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1404	return VERR_INVALID_PARAMETER;
1405	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1406
1407	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1408	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1409	return VERR_INVALID_PARAMETER;
1410	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1411
1412	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1413	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1414	return VERR_INVALID_PARAMETER;
1415	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1416
1417	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1418	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1419	return VERR_INVALID_PARAMETER;
1420	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1421
1422	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1423	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1424	return VERR_INVALID_PARAMETER;
1425	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1426
1427	case VMMR0_DO_INTNET_IF_SEND:
1428	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1429	return VERR_INVALID_PARAMETER;
1430	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1431
1432	case VMMR0_DO_INTNET_IF_WAIT:
1433	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1434	return VERR_INVALID_PARAMETER;
1435	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1436
1437	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
1438	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1439	return VERR_INVALID_PARAMETER;
1440	return IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
1441
1442	#ifdef VBOX_WITH_PCI_PASSTHROUGH
1443	/*
1444	* Requests to host PCI driver service.
1445	*/
1446	case VMMR0_DO_PCIRAW_REQ:
1447	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1448	return VERR_INVALID_PARAMETER;
1449	return PciRawR0ProcessReq(pSession, pVM, (PPCIRAWSENDREQ)pReqHdr);
1450	#endif
1451	/*
1452	* For profiling.
1453	*/
1454	case VMMR0_DO_NOP:
1455	case VMMR0_DO_SLOW_NOP:
1456	return VINF_SUCCESS;
1457
1458	/*
1459	* For testing Ring-0 APIs invoked in this environment.
1460	*/
1461	case VMMR0_DO_TESTS:
1462	/** @todo make new test */
1463	return VINF_SUCCESS;
1464
1465
1466	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1467	case VMMR0_DO_TEST_SWITCHER3264:
1468	if (idCpu == NIL_VMCPUID)
1469	return VERR_INVALID_CPU_ID;
1470	return HMR0TestSwitcher3264(pVM);
1471	#endif
1472	default:
1473	/*
1474	* We're returning VERR_NOT_SUPPORT here so we've got something else
1475	* than -1 which the interrupt gate glue code might return.
1476	*/
1477	Log(("operation %#x is not supported\n", enmOperation));
1478	return VERR_NOT_SUPPORTED;
1479	}
1480	}
1481
1482
1483	/**
1484	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1485	*/
1486	typedef struct VMMR0ENTRYEXARGS
1487	{
1488	PVM pVM;
1489	VMCPUID idCpu;
1490	VMMR0OPERATION enmOperation;
1491	PSUPVMMR0REQHDR pReq;
1492	uint64_t u64Arg;
1493	PSUPDRVSESSION pSession;
1494	} VMMR0ENTRYEXARGS;
1495	/** Pointer to a vmmR0EntryExWrapper argument package. */
1496	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1497
1498	/**
1499	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1500	*
1501	* @returns VBox status code.
1502	* @param pvArgs The argument package
1503	*/
1504	static DECLCALLBACK(int) vmmR0EntryExWrapper(void *pvArgs)
1505	{
1506	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1507	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1508	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1509	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1510	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1511	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1512	}
1513
1514
1515	/**
1516	* The Ring 0 entry point, called by the support library (SUP).
1517	*
1518	* @returns VBox status code.
1519	* @param pVM Pointer to the VM.
1520	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1521	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1522	* @param enmOperation Which operation to execute.
1523	* @param pReq Pointer to the SUPVMMR0REQHDR packet. Optional.
1524	* @param u64Arg Some simple constant argument.
1525	* @param pSession The session of the caller.
1526	* @remarks Assume called with interrupts _enabled_.
1527	*/
1528	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1529	{
1530	/*
1531	* Requests that should only happen on the EMT thread will be
1532	* wrapped in a setjmp so we can assert without causing trouble.
1533	*/
1534	if ( VALID_PTR(pVM)
1535	&& pVM->pVMR0
1536	&& idCpu < pVM->cCpus)
1537	{
1538	switch (enmOperation)
1539	{
1540	/* These might/will be called before VMMR3Init. */
1541	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1542	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1543	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1544	case VMMR0_DO_GMM_FREE_PAGES:
1545	case VMMR0_DO_GMM_BALLOONED_PAGES:
1546	/* On the mac we might not have a valid jmp buf, so check these as well. */
1547	case VMMR0_DO_VMMR0_INIT:
1548	case VMMR0_DO_VMMR0_TERM:
1549	{
1550	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1551
1552	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1553	break;
1554
1555	/** @todo validate this EMT claim... GVM knows. */
1556	VMMR0ENTRYEXARGS Args;
1557	Args.pVM = pVM;
1558	Args.idCpu = idCpu;
1559	Args.enmOperation = enmOperation;
1560	Args.pReq = pReq;
1561	Args.u64Arg = u64Arg;
1562	Args.pSession = pSession;
1563	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1564	}
1565
1566	default:
1567	break;
1568	}
1569	}
1570	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1571	}
1572
1573
1574	/**
1575	* Checks whether we've armed the ring-0 long jump machinery.
1576	*
1577	* @returns @c true / @c false
1578	* @param pVCpu Pointer to the VMCPU.
1579	* @thread EMT
1580	* @sa VMMIsLongJumpArmed
1581	*/
1582	VMMR0_INT_DECL(bool) VMMR0IsLongJumpArmed(PVMCPU pVCpu)
1583	{
1584	#ifdef RT_ARCH_X86
1585	return pVCpu->vmm.s.CallRing3JmpBufR0.eip
1586	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1587	#else
1588	return pVCpu->vmm.s.CallRing3JmpBufR0.rip
1589	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1590	#endif
1591	}
1592
1593
1594	/**
1595	* Checks whether we've done a ring-3 long jump.
1596	*
1597	* @returns @c true / @c false
1598	* @param pVCpu Pointer to the VMCPU.
1599	* @thread EMT
1600	*/
1601	VMMR0_INT_DECL(bool) VMMR0IsInRing3LongJump(PVMCPU pVCpu)
1602	{
1603	return pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1604	}
1605
1606
1607	/**
1608	* Internal R0 logger worker: Flush logger.
1609	*
1610	* @param pLogger The logger instance to flush.
1611	* @remark This function must be exported!
1612	*/
1613	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1614	{
1615	#ifdef LOG_ENABLED
1616	/*
1617	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1618	* (This is a bit paranoid code.)
1619	*/
1620	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1621	if ( !VALID_PTR(pR0Logger)
1622	\|\| !VALID_PTR(pR0Logger + 1)
1623	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1624	{
1625	# ifdef DEBUG
1626	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1627	# endif
1628	return;
1629	}
1630	if (pR0Logger->fFlushingDisabled)
1631	return; /* quietly */
1632
1633	PVM pVM = pR0Logger->pVM;
1634	if ( !VALID_PTR(pVM)
1635	\|\| pVM->pVMR0 != pVM)
1636	{
1637	# ifdef DEBUG
1638	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1639	# endif
1640	return;
1641	}
1642
1643	PVMCPU pVCpu = VMMGetCpu(pVM);
1644	if (pVCpu)
1645	{
1646	/*
1647	* Check that the jump buffer is armed.
1648	*/
1649	# ifdef RT_ARCH_X86
1650	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1651	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1652	# else
1653	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1654	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1655	# endif
1656	{
1657	# ifdef DEBUG
1658	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1659	# endif
1660	return;
1661	}
1662	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1663	}
1664	# ifdef DEBUG
1665	else
1666	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
1667	# endif
1668	#endif
1669	}
1670
1671	/**
1672	* Internal R0 logger worker: Custom prefix.
1673	*
1674	* @returns Number of chars written.
1675	*
1676	* @param pLogger The logger instance.
1677	* @param pchBuf The output buffer.
1678	* @param cchBuf The size of the buffer.
1679	* @param pvUser User argument (ignored).
1680	*/
1681	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1682	{
1683	NOREF(pvUser);
1684	#ifdef LOG_ENABLED
1685	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1686	if ( !VALID_PTR(pR0Logger)
1687	\|\| !VALID_PTR(pR0Logger + 1)
1688	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1689	\|\| cchBuf < 2)
1690	return 0;
1691
1692	static const char s_szHex[17] = "0123456789abcdef";
1693	VMCPUID const idCpu = pR0Logger->idCpu;
1694	pchBuf[1] = s_szHex[ idCpu & 15];
1695	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1696
1697	return 2;
1698	#else
1699	return 0;
1700	#endif
1701	}
1702
1703	#ifdef LOG_ENABLED
1704
1705	/**
1706	* Disables flushing of the ring-0 debug log.
1707	*
1708	* @param pVCpu Pointer to the VMCPU.
1709	*/
1710	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1711	{
1712	if (pVCpu->vmm.s.pR0LoggerR0)
1713	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1714	}
1715
1716
1717	/**
1718	* Enables flushing of the ring-0 debug log.
1719	*
1720	* @param pVCpu Pointer to the VMCPU.
1721	*/
1722	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1723	{
1724	if (pVCpu->vmm.s.pR0LoggerR0)
1725	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1726	}
1727
1728
1729	/**
1730	* Checks if log flushing is disabled or not.
1731	*
1732	* @param pVCpu Pointer to the VMCPU.
1733	*/
1734	VMMR0DECL(bool) VMMR0IsLogFlushDisabled(PVMCPU pVCpu)
1735	{
1736	if (pVCpu->vmm.s.pR0LoggerR0)
1737	return pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled;
1738	return true;
1739	}
1740	#endif /* LOG_ENABLED */
1741
1742	/**
1743	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1744	*
1745	* @returns true if the breakpoint should be hit, false if it should be ignored.
1746	*/
1747	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1748	{
1749	#if 0
1750	return true;
1751	#else
1752	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1753	if (pVM)
1754	{
1755	PVMCPU pVCpu = VMMGetCpu(pVM);
1756
1757	if (pVCpu)
1758	{
1759	#ifdef RT_ARCH_X86
1760	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1761	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1762	#else
1763	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1764	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1765	#endif
1766	{
1767	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1768	return RT_FAILURE_NP(rc);
1769	}
1770	}
1771	}
1772	#ifdef RT_OS_LINUX
1773	return true;
1774	#else
1775	return false;
1776	#endif
1777	#endif
1778	}
1779
1780
1781	/**
1782	* Override this so we can push it up to ring-3.
1783	*
1784	* @param pszExpr Expression. Can be NULL.
1785	* @param uLine Location line number.
1786	* @param pszFile Location file name.
1787	* @param pszFunction Location function name.
1788	*/
1789	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1790	{
1791	/*
1792	* To the log.
1793	*/
1794	LogAlways(("\n!!R0-Assertion Failed!!\n"
1795	"Expression: %s\n"
1796	"Location : %s(%d) %s\n",
1797	pszExpr, pszFile, uLine, pszFunction));
1798
1799	/*
1800	* To the global VMM buffer.
1801	*/
1802	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1803	if (pVM)
1804	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1805	"\n!!R0-Assertion Failed!!\n"
1806	"Expression: %s\n"
1807	"Location : %s(%d) %s\n",
1808	pszExpr, pszFile, uLine, pszFunction);
1809
1810	/*
1811	* Continue the normal way.
1812	*/
1813	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1814	}
1815
1816
1817	/**
1818	* Callback for RTLogFormatV which writes to the ring-3 log port.
1819	* See PFNLOGOUTPUT() for details.
1820	*/
1821	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1822	{
1823	for (size_t i = 0; i < cbChars; i++)
1824	LogAlways(("%c", pachChars[i]));
1825
1826	NOREF(pv);
1827	return cbChars;
1828	}
1829
1830
1831	/**
1832	* Override this so we can push it up to ring-3.
1833	*
1834	* @param pszFormat The format string.
1835	* @param va Arguments.
1836	*/
1837	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1838	{
1839	va_list vaCopy;
1840
1841	/*
1842	* Push the message to the loggers.
1843	*/
1844	PRTLOGGER pLog = RTLogGetDefaultInstance(); /* Don't initialize it here... */
1845	if (pLog)
1846	{
1847	va_copy(vaCopy, va);
1848	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1849	va_end(vaCopy);
1850	}
1851	pLog = RTLogRelDefaultInstance();
1852	if (pLog)
1853	{
1854	va_copy(vaCopy, va);
1855	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1856	va_end(vaCopy);
1857	}
1858
1859	/*
1860	* Push it to the global VMM buffer.
1861	*/
1862	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1863	if (pVM)
1864	{
1865	va_copy(vaCopy, va);
1866	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1867	va_end(vaCopy);
1868	}
1869
1870	/*
1871	* Continue the normal way.
1872	*/
1873	RTAssertMsg2V(pszFormat, va);
1874	}
1875

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 48025

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