VMMR0.cpp@ 52023

Last change on this file since 52023 was 51643, checked in by vboxsync, 10 years ago
VMM/GIM: More bits for Hyper-V implementation.
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1	/* $Id: VMMR0.cpp 51643 2014-06-18 11:06:06Z 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_EM_RAW_EMULATE_INSTR:
660	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
661	break;
662	case VINF_EM_RAW_EMULATE_IO_BLOCK:
663	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
664	break;
665	case VINF_PATCH_EMULATE_INSTR:
666	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
667	break;
668	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
669	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
670	break;
671	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
672	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
673	break;
674	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
675	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
676	break;
677	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
678	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
679	break;
680	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
681	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
682	break;
683	case VINF_CSAM_PENDING_ACTION:
684	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
685	break;
686	case VINF_PGM_SYNC_CR3:
687	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
688	break;
689	case VINF_PATM_PATCH_INT3:
690	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
691	break;
692	case VINF_PATM_PATCH_TRAP_PF:
693	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
694	break;
695	case VINF_PATM_PATCH_TRAP_GP:
696	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
697	break;
698	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
699	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
700	break;
701	case VINF_EM_RESCHEDULE_REM:
702	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
703	break;
704	case VINF_EM_RAW_TO_R3:
705	if (VM_FF_IS_PENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
706	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
707	else if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
708	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
709	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_QUEUES))
710	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
711	else if (VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS))
712	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
713	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
714	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
715	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TIMER))
716	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
717	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
718	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
719	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TO_R3))
720	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
721	else
722	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
723	break;
724
725	case VINF_EM_RAW_TIMER_PENDING:
726	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
727	break;
728	case VINF_EM_RAW_INTERRUPT_PENDING:
729	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
730	break;
731	case VINF_VMM_CALL_HOST:
732	switch (pVCpu->vmm.s.enmCallRing3Operation)
733	{
734	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
735	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
736	break;
737	case VMMCALLRING3_PDM_LOCK:
738	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
739	break;
740	case VMMCALLRING3_PGM_POOL_GROW:
741	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
742	break;
743	case VMMCALLRING3_PGM_LOCK:
744	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
745	break;
746	case VMMCALLRING3_PGM_MAP_CHUNK:
747	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
748	break;
749	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
750	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
751	break;
752	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
753	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
754	break;
755	case VMMCALLRING3_VMM_LOGGER_FLUSH:
756	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
757	break;
758	case VMMCALLRING3_VM_SET_ERROR:
759	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
760	break;
761	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
762	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
763	break;
764	case VMMCALLRING3_VM_R0_ASSERTION:
765	default:
766	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
767	break;
768	}
769	break;
770	case VINF_PATM_DUPLICATE_FUNCTION:
771	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
772	break;
773	case VINF_PGM_CHANGE_MODE:
774	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
775	break;
776	case VINF_PGM_POOL_FLUSH_PENDING:
777	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
778	break;
779	case VINF_EM_PENDING_REQUEST:
780	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
781	break;
782	case VINF_EM_HM_PATCH_TPR_INSTR:
783	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
784	break;
785	default:
786	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
787	break;
788	}
789	}
790	#endif /* VBOX_WITH_STATISTICS */
791
792
793	/**
794	* Unused ring-0 entry point that used to be called from the interrupt gate.
795	*
796	* Will be removed one of the next times we do a major SUPDrv version bump.
797	*
798	* @returns VBox status code.
799	* @param pVM Pointer to the VM.
800	* @param enmOperation Which operation to execute.
801	* @param pvArg Argument to the operation.
802	* @remarks Assume called with interrupts disabled.
803	*/
804	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
805	{
806	/*
807	* We're returning VERR_NOT_SUPPORT here so we've got something else
808	* than -1 which the interrupt gate glue code might return.
809	*/
810	Log(("operation %#x is not supported\n", enmOperation));
811	NOREF(enmOperation); NOREF(pvArg); NOREF(pVM);
812	return VERR_NOT_SUPPORTED;
813	}
814
815
816	/**
817	* The Ring 0 entry point, called by the fast-ioctl path.
818	*
819	* @param pVM Pointer to the VM.
820	* The return code is stored in pVM->vmm.s.iLastGZRc.
821	* @param idCpu The Virtual CPU ID of the calling EMT.
822	* @param enmOperation Which operation to execute.
823	* @remarks Assume called with interrupts _enabled_.
824	*/
825	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
826	{
827	/*
828	* Validation.
829	*/
830	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
831	return;
832	PVMCPU pVCpu = &pVM->aCpus[idCpu];
833	if (RT_UNLIKELY(pVCpu->hNativeThreadR0 != RTThreadNativeSelf()))
834	return;
835
836	/*
837	* Perform requested operation.
838	*/
839	switch (enmOperation)
840	{
841	/*
842	* Switch to GC and run guest raw mode code.
843	* Disable interrupts before doing the world switch.
844	*/
845	case VMMR0_DO_RAW_RUN:
846	{
847	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
848	/* Some safety precautions first. */
849	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
850	{
851	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
852	break;
853	}
854	#endif
855
856	/* Disable preemption and update the periodic preemption timer. */
857	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
858	RTThreadPreemptDisable(&PreemptState);
859	RTCPUID idHostCpu = RTMpCpuId();
860	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
861	CPUMR0SetLApic(pVCpu, idHostCpu);
862	#endif
863	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
864	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
865	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
866
867	/* We might need to disable VT-x if the active switcher turns off paging. */
868	bool fVTxDisabled;
869	int rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
870	if (RT_SUCCESS(rc))
871	{
872	RTCCUINTREG uFlags = ASMIntDisableFlags();
873
874	for (;;)
875	{
876	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
877	TMNotifyStartOfExecution(pVCpu);
878
879	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
880	pVCpu->vmm.s.iLastGZRc = rc;
881
882	TMNotifyEndOfExecution(pVCpu);
883	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
884
885	if (rc != VINF_VMM_CALL_TRACER)
886	break;
887	SUPR0TracerUmodProbeFire(pVM->pSession, &pVCpu->vmm.s.TracerCtx);
888	}
889
890	/* Re-enable VT-x if previously turned off. */
891	HMR0LeaveSwitcher(pVM, fVTxDisabled);
892
893	if ( rc == VINF_EM_RAW_INTERRUPT
894	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
895	TRPMR0DispatchHostInterrupt(pVM);
896
897	ASMSetFlags(uFlags);
898
899	#ifdef VBOX_WITH_STATISTICS
900	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
901	vmmR0RecordRC(pVM, pVCpu, rc);
902	#endif
903	}
904	else
905	pVCpu->vmm.s.iLastGZRc = rc;
906	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
907	RTThreadPreemptRestore(&PreemptState);
908	break;
909	}
910
911	/*
912	* Run guest code using the available hardware acceleration technology.
913	*/
914	case VMMR0_DO_HM_RUN:
915	{
916	Assert(!VMMR0ThreadCtxHooksAreRegistered(pVCpu));
917	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
918	RTThreadPreemptDisable(&PreemptState);
919
920	/* Update the VCPU <-> host CPU mapping before doing anything else. */
921	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
922	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
923	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
924	#ifdef LOG_ENABLED
925	if (pVCpu->idCpu > 0)
926	{
927	/* Lazy registration of ring 0 loggers. */
928	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
929	if ( pR0Logger
930	&& !pR0Logger->fRegistered)
931	{
932	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
933	pR0Logger->fRegistered = true;
934	}
935	}
936	#endif
937
938	int rc;
939	bool fPreemptRestored = false;
940	if (!HMR0SuspendPending())
941	{
942	/* Register thread-context hooks if required. */
943	if ( VMMR0ThreadCtxHooksAreCreated(pVCpu)
944	&& !VMMR0ThreadCtxHooksAreRegistered(pVCpu))
945	{
946	rc = VMMR0ThreadCtxHooksRegister(pVCpu, vmmR0ThreadCtxCallback);
947	AssertRC(rc);
948	}
949
950	/* Enter HM context. */
951	rc = HMR0Enter(pVM, pVCpu);
952	if (RT_SUCCESS(rc))
953	{
954	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
955
956	/* When preemption hooks are in place, enable preemption now that we're in HM context. */
957	if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
958	{
959	fPreemptRestored = true;
960	RTThreadPreemptRestore(&PreemptState);
961	}
962
963	/* Setup the longjmp machinery and execute guest code. */
964	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HMR0RunGuestCode, pVM, pVCpu);
965
966	/* Manual assert as normal assertions are going to crash in this case. */
967	if (RT_UNLIKELY( VMCPU_GET_STATE(pVCpu) != VMCPUSTATE_STARTED_HM
968	&& RT_SUCCESS_NP(rc) && rc != VINF_VMM_CALL_HOST ))
969	{
970	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
971	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
972	"Got VMCPU state %d expected %d.\n", VMCPU_GET_STATE(pVCpu), VMCPUSTATE_STARTED_HM);
973	rc = VERR_VMM_WRONG_HM_VMCPU_STATE;
974	}
975	else if (RT_UNLIKELY(VMMR0ThreadCtxHooksAreRegistered(pVCpu)))
976	{
977	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
978	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
979	"Thread-context hooks still registered! VCPU=%p Id=%u rc=%d.\n", pVCpu, pVCpu->idCpu, rc);
980	rc = VERR_INVALID_STATE;
981	}
982
983	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
984	}
985	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
986	}
987	else
988	{
989	/* System is about to go into suspend mode; go back to ring 3. */
990	rc = VINF_EM_RAW_INTERRUPT;
991	}
992	pVCpu->vmm.s.iLastGZRc = rc;
993
994	/* Clear the VCPU <-> host CPU mapping as we've left HM context. */
995	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
996
997	if (!fPreemptRestored)
998	RTThreadPreemptRestore(&PreemptState);
999
1000	#ifdef VBOX_WITH_STATISTICS
1001	vmmR0RecordRC(pVM, pVCpu, rc);
1002	#endif
1003	/* No special action required for external interrupts, just return. */
1004	break;
1005	}
1006
1007	/*
1008	* For profiling.
1009	*/
1010	case VMMR0_DO_NOP:
1011	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
1012	break;
1013
1014	/*
1015	* Impossible.
1016	*/
1017	default:
1018	AssertMsgFailed(("%#x\n", enmOperation));
1019	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
1020	break;
1021	}
1022	}
1023
1024
1025	/**
1026	* Validates a session or VM session argument.
1027	*
1028	* @returns true / false accordingly.
1029	* @param pVM Pointer to the VM.
1030	* @param pSession The session argument.
1031	*/
1032	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
1033	{
1034	/* This must be set! */
1035	if (!pSession)
1036	return false;
1037
1038	/* Only one out of the two. */
1039	if (pVM && pClaimedSession)
1040	return false;
1041	if (pVM)
1042	pClaimedSession = pVM->pSession;
1043	return pClaimedSession == pSession;
1044	}
1045
1046
1047	/**
1048	* VMMR0EntryEx worker function, either called directly or when ever possible
1049	* called thru a longjmp so we can exit safely on failure.
1050	*
1051	* @returns VBox status code.
1052	* @param pVM Pointer to the VM.
1053	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1054	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1055	* @param enmOperation Which operation to execute.
1056	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
1057	* The support driver validates this if it's present.
1058	* @param u64Arg Some simple constant argument.
1059	* @param pSession The session of the caller.
1060	* @remarks Assume called with interrupts _enabled_.
1061	*/
1062	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
1063	{
1064	/*
1065	* Common VM pointer validation.
1066	*/
1067	if (pVM)
1068	{
1069	if (RT_UNLIKELY( !VALID_PTR(pVM)
1070	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
1071	{
1072	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
1073	return VERR_INVALID_POINTER;
1074	}
1075	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
1076	\|\| pVM->enmVMState > VMSTATE_TERMINATED
1077	\|\| pVM->pVMR0 != pVM))
1078	{
1079	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
1080	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
1081	return VERR_INVALID_POINTER;
1082	}
1083
1084	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
1085	{
1086	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
1087	return VERR_INVALID_PARAMETER;
1088	}
1089	}
1090	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
1091	{
1092	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
1093	return VERR_INVALID_PARAMETER;
1094	}
1095
1096
1097	switch (enmOperation)
1098	{
1099	/*
1100	* GVM requests
1101	*/
1102	case VMMR0_DO_GVMM_CREATE_VM:
1103	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1104	return VERR_INVALID_PARAMETER;
1105	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
1106
1107	case VMMR0_DO_GVMM_DESTROY_VM:
1108	if (pReqHdr \|\| u64Arg)
1109	return VERR_INVALID_PARAMETER;
1110	return GVMMR0DestroyVM(pVM);
1111
1112	case VMMR0_DO_GVMM_REGISTER_VMCPU:
1113	{
1114	if (!pVM)
1115	return VERR_INVALID_PARAMETER;
1116	return GVMMR0RegisterVCpu(pVM, idCpu);
1117	}
1118
1119	case VMMR0_DO_GVMM_SCHED_HALT:
1120	if (pReqHdr)
1121	return VERR_INVALID_PARAMETER;
1122	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
1123
1124	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
1125	if (pReqHdr \|\| u64Arg)
1126	return VERR_INVALID_PARAMETER;
1127	return GVMMR0SchedWakeUp(pVM, idCpu);
1128
1129	case VMMR0_DO_GVMM_SCHED_POKE:
1130	if (pReqHdr \|\| u64Arg)
1131	return VERR_INVALID_PARAMETER;
1132	return GVMMR0SchedPoke(pVM, idCpu);
1133
1134	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
1135	if (u64Arg)
1136	return VERR_INVALID_PARAMETER;
1137	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
1138
1139	case VMMR0_DO_GVMM_SCHED_POLL:
1140	if (pReqHdr \|\| u64Arg > 1)
1141	return VERR_INVALID_PARAMETER;
1142	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
1143
1144	case VMMR0_DO_GVMM_QUERY_STATISTICS:
1145	if (u64Arg)
1146	return VERR_INVALID_PARAMETER;
1147	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
1148
1149	case VMMR0_DO_GVMM_RESET_STATISTICS:
1150	if (u64Arg)
1151	return VERR_INVALID_PARAMETER;
1152	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
1153
1154	/*
1155	* Initialize the R0 part of a VM instance.
1156	*/
1157	case VMMR0_DO_VMMR0_INIT:
1158	return vmmR0InitVM(pVM, RT_LODWORD(u64Arg), RT_HIDWORD(u64Arg));
1159
1160	/*
1161	* Terminate the R0 part of a VM instance.
1162	*/
1163	case VMMR0_DO_VMMR0_TERM:
1164	return VMMR0TermVM(pVM, NULL);
1165
1166	/*
1167	* Attempt to enable hm mode and check the current setting.
1168	*/
1169	case VMMR0_DO_HM_ENABLE:
1170	return HMR0EnableAllCpus(pVM);
1171
1172	/*
1173	* Setup the hardware accelerated session.
1174	*/
1175	case VMMR0_DO_HM_SETUP_VM:
1176	return HMR0SetupVM(pVM);
1177
1178	/*
1179	* Switch to RC to execute Hypervisor function.
1180	*/
1181	case VMMR0_DO_CALL_HYPERVISOR:
1182	{
1183	int rc;
1184	bool fVTxDisabled;
1185
1186	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1187	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
1188	return VERR_PGM_NO_CR3_SHADOW_ROOT;
1189	#endif
1190
1191	RTCCUINTREG fFlags = ASMIntDisableFlags();
1192
1193	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1194	RTCPUID idHostCpu = RTMpCpuId();
1195	CPUMR0SetLApic(&pVM->aCpus[0], idHostCpu);
1196	#endif
1197
1198	/* We might need to disable VT-x if the active switcher turns off paging. */
1199	rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
1200	if (RT_FAILURE(rc))
1201	return rc;
1202
1203	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
1204
1205	/* Re-enable VT-x if previously turned off. */
1206	HMR0LeaveSwitcher(pVM, fVTxDisabled);
1207
1208	/** @todo dispatch interrupts? */
1209	ASMSetFlags(fFlags);
1210	return rc;
1211	}
1212
1213	/*
1214	* PGM wrappers.
1215	*/
1216	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
1217	if (idCpu == NIL_VMCPUID)
1218	return VERR_INVALID_CPU_ID;
1219	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
1220
1221	case VMMR0_DO_PGM_FLUSH_HANDY_PAGES:
1222	if (idCpu == NIL_VMCPUID)
1223	return VERR_INVALID_CPU_ID;
1224	return PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu]);
1225
1226	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
1227	if (idCpu == NIL_VMCPUID)
1228	return VERR_INVALID_CPU_ID;
1229	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
1230
1231	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
1232	if (idCpu != 0)
1233	return VERR_INVALID_CPU_ID;
1234	return PGMR0PhysSetupIommu(pVM);
1235
1236	/*
1237	* GMM wrappers.
1238	*/
1239	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1240	if (u64Arg)
1241	return VERR_INVALID_PARAMETER;
1242	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
1243
1244	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1245	if (u64Arg)
1246	return VERR_INVALID_PARAMETER;
1247	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
1248
1249	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1250	if (u64Arg)
1251	return VERR_INVALID_PARAMETER;
1252	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
1253
1254	case VMMR0_DO_GMM_FREE_PAGES:
1255	if (u64Arg)
1256	return VERR_INVALID_PARAMETER;
1257	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1258
1259	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1260	if (u64Arg)
1261	return VERR_INVALID_PARAMETER;
1262	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1263
1264	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1265	if (u64Arg)
1266	return VERR_INVALID_PARAMETER;
1267	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
1268
1269	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1270	if (idCpu == NIL_VMCPUID)
1271	return VERR_INVALID_CPU_ID;
1272	if (u64Arg)
1273	return VERR_INVALID_PARAMETER;
1274	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1275
1276	case VMMR0_DO_GMM_BALLOONED_PAGES:
1277	if (u64Arg)
1278	return VERR_INVALID_PARAMETER;
1279	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1280
1281	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1282	if (u64Arg)
1283	return VERR_INVALID_PARAMETER;
1284	return GMMR0MapUnmapChunkReq(pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1285
1286	case VMMR0_DO_GMM_SEED_CHUNK:
1287	if (pReqHdr)
1288	return VERR_INVALID_PARAMETER;
1289	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
1290
1291	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1292	if (idCpu == NIL_VMCPUID)
1293	return VERR_INVALID_CPU_ID;
1294	if (u64Arg)
1295	return VERR_INVALID_PARAMETER;
1296	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1297
1298	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1299	if (idCpu == NIL_VMCPUID)
1300	return VERR_INVALID_CPU_ID;
1301	if (u64Arg)
1302	return VERR_INVALID_PARAMETER;
1303	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1304
1305	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1306	if (idCpu == NIL_VMCPUID)
1307	return VERR_INVALID_CPU_ID;
1308	if ( u64Arg
1309	\|\| pReqHdr)
1310	return VERR_INVALID_PARAMETER;
1311	return GMMR0ResetSharedModules(pVM, idCpu);
1312
1313	#ifdef VBOX_WITH_PAGE_SHARING
1314	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1315	{
1316	if (idCpu == NIL_VMCPUID)
1317	return VERR_INVALID_CPU_ID;
1318	if ( u64Arg
1319	\|\| pReqHdr)
1320	return VERR_INVALID_PARAMETER;
1321
1322	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1323	Assert(pVCpu->hNativeThreadR0 == RTThreadNativeSelf());
1324
1325	# ifdef DEBUG_sandervl
1326	/* 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). */
1327	/* Todo: this can have bad side effects for unexpected jumps back to r3. */
1328	int rc = GMMR0CheckSharedModulesStart(pVM);
1329	if (rc == VINF_SUCCESS)
1330	{
1331	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, GMMR0CheckSharedModules, pVM, pVCpu); /* this may resume code. */
1332	Assert( rc == VINF_SUCCESS
1333	\|\| (rc == VINF_VMM_CALL_HOST && pVCpu->vmm.s.enmCallRing3Operation == VMMCALLRING3_VMM_LOGGER_FLUSH));
1334	GMMR0CheckSharedModulesEnd(pVM);
1335	}
1336	# else
1337	int rc = GMMR0CheckSharedModules(pVM, pVCpu);
1338	# endif
1339	return rc;
1340	}
1341	#endif
1342
1343	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1344	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1345	if (u64Arg)
1346	return VERR_INVALID_PARAMETER;
1347	return GMMR0FindDuplicatePageReq(pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1348	#endif
1349
1350	case VMMR0_DO_GMM_QUERY_STATISTICS:
1351	if (u64Arg)
1352	return VERR_INVALID_PARAMETER;
1353	return GMMR0QueryStatisticsReq(pVM, (PGMMQUERYSTATISTICSSREQ)pReqHdr);
1354
1355	case VMMR0_DO_GMM_RESET_STATISTICS:
1356	if (u64Arg)
1357	return VERR_INVALID_PARAMETER;
1358	return GMMR0ResetStatisticsReq(pVM, (PGMMRESETSTATISTICSSREQ)pReqHdr);
1359
1360	/*
1361	* A quick GCFGM mock-up.
1362	*/
1363	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1364	case VMMR0_DO_GCFGM_SET_VALUE:
1365	case VMMR0_DO_GCFGM_QUERY_VALUE:
1366	{
1367	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1368	return VERR_INVALID_PARAMETER;
1369	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1370	if (pReq->Hdr.cbReq != sizeof(*pReq))
1371	return VERR_INVALID_PARAMETER;
1372	int rc;
1373	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1374	{
1375	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1376	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1377	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1378	}
1379	else
1380	{
1381	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1382	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1383	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1384	}
1385	return rc;
1386	}
1387
1388	/*
1389	* PDM Wrappers.
1390	*/
1391	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1392	{
1393	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1394	return VERR_INVALID_PARAMETER;
1395	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1396	}
1397
1398	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1399	{
1400	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1401	return VERR_INVALID_PARAMETER;
1402	return PDMR0DeviceCallReqHandler(pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1403	}
1404
1405	/*
1406	* Requests to the internal networking service.
1407	*/
1408	case VMMR0_DO_INTNET_OPEN:
1409	{
1410	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1411	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1412	return VERR_INVALID_PARAMETER;
1413	return IntNetR0OpenReq(pSession, pReq);
1414	}
1415
1416	case VMMR0_DO_INTNET_IF_CLOSE:
1417	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1418	return VERR_INVALID_PARAMETER;
1419	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1420
1421	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1422	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1423	return VERR_INVALID_PARAMETER;
1424	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1425
1426	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1427	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1428	return VERR_INVALID_PARAMETER;
1429	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1430
1431	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1432	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1433	return VERR_INVALID_PARAMETER;
1434	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1435
1436	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1437	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1438	return VERR_INVALID_PARAMETER;
1439	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1440
1441	case VMMR0_DO_INTNET_IF_SEND:
1442	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1443	return VERR_INVALID_PARAMETER;
1444	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1445
1446	case VMMR0_DO_INTNET_IF_WAIT:
1447	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1448	return VERR_INVALID_PARAMETER;
1449	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1450
1451	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
1452	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1453	return VERR_INVALID_PARAMETER;
1454	return IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
1455
1456	#ifdef VBOX_WITH_PCI_PASSTHROUGH
1457	/*
1458	* Requests to host PCI driver service.
1459	*/
1460	case VMMR0_DO_PCIRAW_REQ:
1461	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1462	return VERR_INVALID_PARAMETER;
1463	return PciRawR0ProcessReq(pSession, pVM, (PPCIRAWSENDREQ)pReqHdr);
1464	#endif
1465	/*
1466	* For profiling.
1467	*/
1468	case VMMR0_DO_NOP:
1469	case VMMR0_DO_SLOW_NOP:
1470	return VINF_SUCCESS;
1471
1472	/*
1473	* For testing Ring-0 APIs invoked in this environment.
1474	*/
1475	case VMMR0_DO_TESTS:
1476	/** @todo make new test */
1477	return VINF_SUCCESS;
1478
1479
1480	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1481	case VMMR0_DO_TEST_SWITCHER3264:
1482	if (idCpu == NIL_VMCPUID)
1483	return VERR_INVALID_CPU_ID;
1484	return HMR0TestSwitcher3264(pVM);
1485	#endif
1486	default:
1487	/*
1488	* We're returning VERR_NOT_SUPPORT here so we've got something else
1489	* than -1 which the interrupt gate glue code might return.
1490	*/
1491	Log(("operation %#x is not supported\n", enmOperation));
1492	return VERR_NOT_SUPPORTED;
1493	}
1494	}
1495
1496
1497	/**
1498	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1499	*/
1500	typedef struct VMMR0ENTRYEXARGS
1501	{
1502	PVM pVM;
1503	VMCPUID idCpu;
1504	VMMR0OPERATION enmOperation;
1505	PSUPVMMR0REQHDR pReq;
1506	uint64_t u64Arg;
1507	PSUPDRVSESSION pSession;
1508	} VMMR0ENTRYEXARGS;
1509	/** Pointer to a vmmR0EntryExWrapper argument package. */
1510	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1511
1512	/**
1513	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1514	*
1515	* @returns VBox status code.
1516	* @param pvArgs The argument package
1517	*/
1518	static DECLCALLBACK(int) vmmR0EntryExWrapper(void *pvArgs)
1519	{
1520	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1521	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1522	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1523	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1524	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1525	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1526	}
1527
1528
1529	/**
1530	* The Ring 0 entry point, called by the support library (SUP).
1531	*
1532	* @returns VBox status code.
1533	* @param pVM Pointer to the VM.
1534	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1535	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1536	* @param enmOperation Which operation to execute.
1537	* @param pReq Pointer to the SUPVMMR0REQHDR packet. Optional.
1538	* @param u64Arg Some simple constant argument.
1539	* @param pSession The session of the caller.
1540	* @remarks Assume called with interrupts _enabled_.
1541	*/
1542	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1543	{
1544	/*
1545	* Requests that should only happen on the EMT thread will be
1546	* wrapped in a setjmp so we can assert without causing trouble.
1547	*/
1548	if ( VALID_PTR(pVM)
1549	&& pVM->pVMR0
1550	&& idCpu < pVM->cCpus)
1551	{
1552	switch (enmOperation)
1553	{
1554	/* These might/will be called before VMMR3Init. */
1555	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1556	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1557	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1558	case VMMR0_DO_GMM_FREE_PAGES:
1559	case VMMR0_DO_GMM_BALLOONED_PAGES:
1560	/* On the mac we might not have a valid jmp buf, so check these as well. */
1561	case VMMR0_DO_VMMR0_INIT:
1562	case VMMR0_DO_VMMR0_TERM:
1563	{
1564	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1565
1566	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1567	break;
1568
1569	/** @todo validate this EMT claim... GVM knows. */
1570	VMMR0ENTRYEXARGS Args;
1571	Args.pVM = pVM;
1572	Args.idCpu = idCpu;
1573	Args.enmOperation = enmOperation;
1574	Args.pReq = pReq;
1575	Args.u64Arg = u64Arg;
1576	Args.pSession = pSession;
1577	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1578	}
1579
1580	default:
1581	break;
1582	}
1583	}
1584	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1585	}
1586
1587
1588	/**
1589	* Checks whether we've armed the ring-0 long jump machinery.
1590	*
1591	* @returns @c true / @c false
1592	* @param pVCpu Pointer to the VMCPU.
1593	* @thread EMT
1594	* @sa VMMIsLongJumpArmed
1595	*/
1596	VMMR0_INT_DECL(bool) VMMR0IsLongJumpArmed(PVMCPU pVCpu)
1597	{
1598	#ifdef RT_ARCH_X86
1599	return pVCpu->vmm.s.CallRing3JmpBufR0.eip
1600	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1601	#else
1602	return pVCpu->vmm.s.CallRing3JmpBufR0.rip
1603	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1604	#endif
1605	}
1606
1607
1608	/**
1609	* Checks whether we've done a ring-3 long jump.
1610	*
1611	* @returns @c true / @c false
1612	* @param pVCpu Pointer to the VMCPU.
1613	* @thread EMT
1614	*/
1615	VMMR0_INT_DECL(bool) VMMR0IsInRing3LongJump(PVMCPU pVCpu)
1616	{
1617	return pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1618	}
1619
1620
1621	/**
1622	* Internal R0 logger worker: Flush logger.
1623	*
1624	* @param pLogger The logger instance to flush.
1625	* @remark This function must be exported!
1626	*/
1627	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1628	{
1629	#ifdef LOG_ENABLED
1630	/*
1631	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1632	* (This is a bit paranoid code.)
1633	*/
1634	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1635	if ( !VALID_PTR(pR0Logger)
1636	\|\| !VALID_PTR(pR0Logger + 1)
1637	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1638	{
1639	# ifdef DEBUG
1640	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1641	# endif
1642	return;
1643	}
1644	if (pR0Logger->fFlushingDisabled)
1645	return; /* quietly */
1646
1647	PVM pVM = pR0Logger->pVM;
1648	if ( !VALID_PTR(pVM)
1649	\|\| pVM->pVMR0 != pVM)
1650	{
1651	# ifdef DEBUG
1652	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1653	# endif
1654	return;
1655	}
1656
1657	PVMCPU pVCpu = VMMGetCpu(pVM);
1658	if (pVCpu)
1659	{
1660	/*
1661	* Check that the jump buffer is armed.
1662	*/
1663	# ifdef RT_ARCH_X86
1664	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1665	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1666	# else
1667	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1668	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1669	# endif
1670	{
1671	# ifdef DEBUG
1672	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1673	# endif
1674	return;
1675	}
1676	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1677	}
1678	# ifdef DEBUG
1679	else
1680	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
1681	# endif
1682	#endif
1683	}
1684
1685	/**
1686	* Internal R0 logger worker: Custom prefix.
1687	*
1688	* @returns Number of chars written.
1689	*
1690	* @param pLogger The logger instance.
1691	* @param pchBuf The output buffer.
1692	* @param cchBuf The size of the buffer.
1693	* @param pvUser User argument (ignored).
1694	*/
1695	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1696	{
1697	NOREF(pvUser);
1698	#ifdef LOG_ENABLED
1699	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1700	if ( !VALID_PTR(pR0Logger)
1701	\|\| !VALID_PTR(pR0Logger + 1)
1702	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1703	\|\| cchBuf < 2)
1704	return 0;
1705
1706	static const char s_szHex[17] = "0123456789abcdef";
1707	VMCPUID const idCpu = pR0Logger->idCpu;
1708	pchBuf[1] = s_szHex[ idCpu & 15];
1709	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1710
1711	return 2;
1712	#else
1713	return 0;
1714	#endif
1715	}
1716
1717	#ifdef LOG_ENABLED
1718
1719	/**
1720	* Disables flushing of the ring-0 debug log.
1721	*
1722	* @param pVCpu Pointer to the VMCPU.
1723	*/
1724	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1725	{
1726	if (pVCpu->vmm.s.pR0LoggerR0)
1727	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1728	}
1729
1730
1731	/**
1732	* Enables flushing of the ring-0 debug log.
1733	*
1734	* @param pVCpu Pointer to the VMCPU.
1735	*/
1736	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1737	{
1738	if (pVCpu->vmm.s.pR0LoggerR0)
1739	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1740	}
1741
1742
1743	/**
1744	* Checks if log flushing is disabled or not.
1745	*
1746	* @param pVCpu Pointer to the VMCPU.
1747	*/
1748	VMMR0DECL(bool) VMMR0IsLogFlushDisabled(PVMCPU pVCpu)
1749	{
1750	if (pVCpu->vmm.s.pR0LoggerR0)
1751	return pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled;
1752	return true;
1753	}
1754	#endif /* LOG_ENABLED */
1755
1756	/**
1757	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1758	*
1759	* @returns true if the breakpoint should be hit, false if it should be ignored.
1760	*/
1761	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1762	{
1763	#if 0
1764	return true;
1765	#else
1766	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1767	if (pVM)
1768	{
1769	PVMCPU pVCpu = VMMGetCpu(pVM);
1770
1771	if (pVCpu)
1772	{
1773	#ifdef RT_ARCH_X86
1774	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1775	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1776	#else
1777	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1778	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1779	#endif
1780	{
1781	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1782	return RT_FAILURE_NP(rc);
1783	}
1784	}
1785	}
1786	#ifdef RT_OS_LINUX
1787	return true;
1788	#else
1789	return false;
1790	#endif
1791	#endif
1792	}
1793
1794
1795	/**
1796	* Override this so we can push it up to ring-3.
1797	*
1798	* @param pszExpr Expression. Can be NULL.
1799	* @param uLine Location line number.
1800	* @param pszFile Location file name.
1801	* @param pszFunction Location function name.
1802	*/
1803	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1804	{
1805	/*
1806	* To the log.
1807	*/
1808	LogAlways(("\n!!R0-Assertion Failed!!\n"
1809	"Expression: %s\n"
1810	"Location : %s(%d) %s\n",
1811	pszExpr, pszFile, uLine, pszFunction));
1812
1813	/*
1814	* To the global VMM buffer.
1815	*/
1816	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1817	if (pVM)
1818	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1819	"\n!!R0-Assertion Failed!!\n"
1820	"Expression: %s\n"
1821	"Location : %s(%d) %s\n",
1822	pszExpr, pszFile, uLine, pszFunction);
1823
1824	/*
1825	* Continue the normal way.
1826	*/
1827	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1828	}
1829
1830
1831	/**
1832	* Callback for RTLogFormatV which writes to the ring-3 log port.
1833	* See PFNLOGOUTPUT() for details.
1834	*/
1835	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1836	{
1837	for (size_t i = 0; i < cbChars; i++)
1838	LogAlways(("%c", pachChars[i]));
1839
1840	NOREF(pv);
1841	return cbChars;
1842	}
1843
1844
1845	/**
1846	* Override this so we can push it up to ring-3.
1847	*
1848	* @param pszFormat The format string.
1849	* @param va Arguments.
1850	*/
1851	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1852	{
1853	va_list vaCopy;
1854
1855	/*
1856	* Push the message to the loggers.
1857	*/
1858	PRTLOGGER pLog = RTLogGetDefaultInstance(); /* Don't initialize it here... */
1859	if (pLog)
1860	{
1861	va_copy(vaCopy, va);
1862	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1863	va_end(vaCopy);
1864	}
1865	pLog = RTLogRelDefaultInstance();
1866	if (pLog)
1867	{
1868	va_copy(vaCopy, va);
1869	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1870	va_end(vaCopy);
1871	}
1872
1873	/*
1874	* Push it to the global VMM buffer.
1875	*/
1876	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1877	if (pVM)
1878	{
1879	va_copy(vaCopy, va);
1880	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1881	va_end(vaCopy);
1882	}
1883
1884	/*
1885	* Continue the normal way.
1886	*/
1887	RTAssertMsg2V(pszFormat, va);
1888	}
1889

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 52023

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