VMMR0.cpp@ 47473

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1	/* $Id: VMMR0.cpp 47457 2013-07-29 12:52:56Z 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 = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
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	int rc = RTThreadCtxHooksCreate(&pVCpu->vmm.s.hR0ThreadCtx);
444	if ( RT_SUCCESS(rc)
445	\|\| rc == VERR_NOT_SUPPORTED)
446	{
447	return VINF_SUCCESS;
448	}
449
450	Log(("RTThreadCtxHooksCreate failed! rc=%Rrc pVCpu=%p idCpu=%RU32\n", rc, pVCpu, pVCpu->idCpu));
451	return rc;
452	}
453
454
455	/**
456	* Releases the object reference for the thread-context hook.
457	*
458	* @param pVCpu Pointer to the VMCPU.
459	* @remarks Can be called from any thread.
460	*/
461	VMMR0DECL(void) VMMR0ThreadCtxHooksRelease(PVMCPU pVCpu)
462	{
463	RTThreadCtxHooksRelease(pVCpu->vmm.s.hR0ThreadCtx);
464	}
465
466
467	#ifdef VBOX_WITH_STATISTICS
468	/**
469	* Record return code statistics
470	* @param pVM Pointer to the VM.
471	* @param pVCpu Pointer to the VMCPU.
472	* @param rc The status code.
473	*/
474	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
475	{
476	/*
477	* Collect statistics.
478	*/
479	switch (rc)
480	{
481	case VINF_SUCCESS:
482	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
483	break;
484	case VINF_EM_RAW_INTERRUPT:
485	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
486	break;
487	case VINF_EM_RAW_INTERRUPT_HYPER:
488	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
489	break;
490	case VINF_EM_RAW_GUEST_TRAP:
491	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
492	break;
493	case VINF_EM_RAW_RING_SWITCH:
494	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
495	break;
496	case VINF_EM_RAW_RING_SWITCH_INT:
497	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
498	break;
499	case VINF_EM_RAW_STALE_SELECTOR:
500	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
501	break;
502	case VINF_EM_RAW_IRET_TRAP:
503	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
504	break;
505	case VINF_IOM_R3_IOPORT_READ:
506	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
507	break;
508	case VINF_IOM_R3_IOPORT_WRITE:
509	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
510	break;
511	case VINF_IOM_R3_MMIO_READ:
512	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
513	break;
514	case VINF_IOM_R3_MMIO_WRITE:
515	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
516	break;
517	case VINF_IOM_R3_MMIO_READ_WRITE:
518	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
519	break;
520	case VINF_PATM_HC_MMIO_PATCH_READ:
521	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
522	break;
523	case VINF_PATM_HC_MMIO_PATCH_WRITE:
524	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
525	break;
526	case VINF_EM_RAW_EMULATE_INSTR:
527	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
528	break;
529	case VINF_EM_RAW_EMULATE_IO_BLOCK:
530	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
531	break;
532	case VINF_PATCH_EMULATE_INSTR:
533	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
534	break;
535	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
536	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
537	break;
538	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
539	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
540	break;
541	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
542	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
543	break;
544	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
545	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
546	break;
547	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
548	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
549	break;
550	case VINF_CSAM_PENDING_ACTION:
551	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
552	break;
553	case VINF_PGM_SYNC_CR3:
554	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
555	break;
556	case VINF_PATM_PATCH_INT3:
557	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
558	break;
559	case VINF_PATM_PATCH_TRAP_PF:
560	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
561	break;
562	case VINF_PATM_PATCH_TRAP_GP:
563	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
564	break;
565	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
566	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
567	break;
568	case VINF_EM_RESCHEDULE_REM:
569	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
570	break;
571	case VINF_EM_RAW_TO_R3:
572	if (VM_FF_IS_PENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
573	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
574	else if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
575	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
576	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_QUEUES))
577	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
578	else if (VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS))
579	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
580	else if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
581	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
582	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TIMER))
583	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
584	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
585	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
586	else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TO_R3))
587	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
588	else
589	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
590	break;
591
592	case VINF_EM_RAW_TIMER_PENDING:
593	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
594	break;
595	case VINF_EM_RAW_INTERRUPT_PENDING:
596	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
597	break;
598	case VINF_VMM_CALL_HOST:
599	switch (pVCpu->vmm.s.enmCallRing3Operation)
600	{
601	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
602	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
603	break;
604	case VMMCALLRING3_PDM_LOCK:
605	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
606	break;
607	case VMMCALLRING3_PGM_POOL_GROW:
608	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
609	break;
610	case VMMCALLRING3_PGM_LOCK:
611	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
612	break;
613	case VMMCALLRING3_PGM_MAP_CHUNK:
614	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
615	break;
616	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
617	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
618	break;
619	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
620	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
621	break;
622	case VMMCALLRING3_VMM_LOGGER_FLUSH:
623	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
624	break;
625	case VMMCALLRING3_VM_SET_ERROR:
626	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
627	break;
628	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
629	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
630	break;
631	case VMMCALLRING3_VM_R0_ASSERTION:
632	default:
633	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
634	break;
635	}
636	break;
637	case VINF_PATM_DUPLICATE_FUNCTION:
638	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
639	break;
640	case VINF_PGM_CHANGE_MODE:
641	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
642	break;
643	case VINF_PGM_POOL_FLUSH_PENDING:
644	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
645	break;
646	case VINF_EM_PENDING_REQUEST:
647	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
648	break;
649	case VINF_EM_HM_PATCH_TPR_INSTR:
650	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
651	break;
652	default:
653	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
654	break;
655	}
656	}
657	#endif /* VBOX_WITH_STATISTICS */
658
659
660	/**
661	* Unused ring-0 entry point that used to be called from the interrupt gate.
662	*
663	* Will be removed one of the next times we do a major SUPDrv version bump.
664	*
665	* @returns VBox status code.
666	* @param pVM Pointer to the VM.
667	* @param enmOperation Which operation to execute.
668	* @param pvArg Argument to the operation.
669	* @remarks Assume called with interrupts disabled.
670	*/
671	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
672	{
673	/*
674	* We're returning VERR_NOT_SUPPORT here so we've got something else
675	* than -1 which the interrupt gate glue code might return.
676	*/
677	Log(("operation %#x is not supported\n", enmOperation));
678	NOREF(enmOperation); NOREF(pvArg); NOREF(pVM);
679	return VERR_NOT_SUPPORTED;
680	}
681
682
683	/**
684	* The Ring 0 entry point, called by the fast-ioctl path.
685	*
686	* @param pVM Pointer to the VM.
687	* The return code is stored in pVM->vmm.s.iLastGZRc.
688	* @param idCpu The Virtual CPU ID of the calling EMT.
689	* @param enmOperation Which operation to execute.
690	* @remarks Assume called with interrupts _enabled_.
691	*/
692	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
693	{
694	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
695	return;
696	PVMCPU pVCpu = &pVM->aCpus[idCpu];
697
698	switch (enmOperation)
699	{
700	/*
701	* Switch to GC and run guest raw mode code.
702	* Disable interrupts before doing the world switch.
703	*/
704	case VMMR0_DO_RAW_RUN:
705	{
706	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
707	/* Some safety precautions first. */
708	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
709	{
710	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
711	break;
712	}
713	#endif
714
715	/* Disable preemption and update the periodic preemption timer. */
716	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
717	RTThreadPreemptDisable(&PreemptState);
718	RTCPUID idHostCpu = RTMpCpuId();
719	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
720	CPUMR0SetLApic(pVM, idHostCpu);
721	#endif
722	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
723	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
724	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
725
726	/* We might need to disable VT-x if the active switcher turns off paging. */
727	bool fVTxDisabled;
728	int rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
729	if (RT_SUCCESS(rc))
730	{
731	RTCCUINTREG uFlags = ASMIntDisableFlags();
732
733	for (;;)
734	{
735	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
736	TMNotifyStartOfExecution(pVCpu);
737
738	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
739	pVCpu->vmm.s.iLastGZRc = rc;
740
741	TMNotifyEndOfExecution(pVCpu);
742	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
743
744	if (rc != VINF_VMM_CALL_TRACER)
745	break;
746	SUPR0TracerUmodProbeFire(pVM->pSession, &pVCpu->vmm.s.TracerCtx);
747	}
748
749	/* Re-enable VT-x if previously turned off. */
750	HMR0LeaveSwitcher(pVM, fVTxDisabled);
751
752	if ( rc == VINF_EM_RAW_INTERRUPT
753	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
754	TRPMR0DispatchHostInterrupt(pVM);
755
756	ASMSetFlags(uFlags);
757
758	#ifdef VBOX_WITH_STATISTICS
759	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
760	vmmR0RecordRC(pVM, pVCpu, rc);
761	#endif
762	}
763	else
764	pVCpu->vmm.s.iLastGZRc = rc;
765	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
766	RTThreadPreemptRestore(&PreemptState);
767	break;
768	}
769
770	/*
771	* Run guest code using the available hardware acceleration technology.
772	*
773	* Disable interrupts before we do anything interesting. On Windows we avoid
774	* this by having the support driver raise the IRQL before calling us, this way
775	* we hope to get away with page faults and later calling into the kernel.
776	*/
777	case VMMR0_DO_HM_RUN:
778	{
779	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
780	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
781	RTThreadPreemptDisable(&PreemptState);
782	#elif !defined(RT_OS_WINDOWS)
783	RTCCUINTREG uFlags = ASMIntDisableFlags();
784	#endif
785	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
786	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
787	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
788
789	#ifdef LOG_ENABLED
790	if (pVCpu->idCpu > 0)
791	{
792	/* Lazy registration of ring 0 loggers. */
793	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
794	if ( pR0Logger
795	&& !pR0Logger->fRegistered)
796	{
797	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
798	pR0Logger->fRegistered = true;
799	}
800	}
801	#endif
802	int rc;
803	if (!HMR0SuspendPending())
804	{
805	rc = HMR0Enter(pVM, pVCpu);
806	if (RT_SUCCESS(rc))
807	{
808	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
809
810	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
811	int rc2 = HMR0Leave(pVM, pVCpu);
812	AssertRC(rc2);
813
814	if (RT_UNLIKELY( VMCPU_GET_STATE(pVCpu) != VMCPUSTATE_STARTED_HM
815	&& RT_SUCCESS_NP(rc) && rc != VINF_VMM_CALL_HOST ))
816	{
817	/* Manual assert as normal assertions are going to crash in this case. */
818	pVM->vmm.s.szRing0AssertMsg1[0] = '\0';
819	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2),
820	"Got VMCPU state %d expected %d.\n", VMCPU_GET_STATE(pVCpu), VMCPUSTATE_STARTED_HM);
821	rc = VERR_VMM_WRONG_HM_VMCPU_STATE;
822	}
823	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
824	}
825	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
826	}
827	else
828	{
829	/* System is about to go into suspend mode; go back to ring 3. */
830	rc = VINF_EM_RAW_INTERRUPT;
831	}
832	pVCpu->vmm.s.iLastGZRc = rc;
833
834	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
835	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
836	RTThreadPreemptRestore(&PreemptState);
837	#elif !defined(RT_OS_WINDOWS)
838	ASMSetFlags(uFlags);
839	#endif
840
841	#ifdef VBOX_WITH_STATISTICS
842	vmmR0RecordRC(pVM, pVCpu, rc);
843	#endif
844	/* No special action required for external interrupts, just return. */
845	break;
846	}
847
848	/*
849	* For profiling.
850	*/
851	case VMMR0_DO_NOP:
852	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
853	break;
854
855	/*
856	* Impossible.
857	*/
858	default:
859	AssertMsgFailed(("%#x\n", enmOperation));
860	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
861	break;
862	}
863	}
864
865
866	/**
867	* Validates a session or VM session argument.
868	*
869	* @returns true / false accordingly.
870	* @param pVM Pointer to the VM.
871	* @param pSession The session argument.
872	*/
873	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
874	{
875	/* This must be set! */
876	if (!pSession)
877	return false;
878
879	/* Only one out of the two. */
880	if (pVM && pClaimedSession)
881	return false;
882	if (pVM)
883	pClaimedSession = pVM->pSession;
884	return pClaimedSession == pSession;
885	}
886
887
888	/**
889	* VMMR0EntryEx worker function, either called directly or when ever possible
890	* called thru a longjmp so we can exit safely on failure.
891	*
892	* @returns VBox status code.
893	* @param pVM Pointer to the VM.
894	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
895	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
896	* @param enmOperation Which operation to execute.
897	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
898	* The support driver validates this if it's present.
899	* @param u64Arg Some simple constant argument.
900	* @param pSession The session of the caller.
901	* @remarks Assume called with interrupts _enabled_.
902	*/
903	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
904	{
905	/*
906	* Common VM pointer validation.
907	*/
908	if (pVM)
909	{
910	if (RT_UNLIKELY( !VALID_PTR(pVM)
911	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
912	{
913	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
914	return VERR_INVALID_POINTER;
915	}
916	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
917	\|\| pVM->enmVMState > VMSTATE_TERMINATED
918	\|\| pVM->pVMR0 != pVM))
919	{
920	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
921	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
922	return VERR_INVALID_POINTER;
923	}
924
925	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
926	{
927	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
928	return VERR_INVALID_PARAMETER;
929	}
930	}
931	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
932	{
933	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
934	return VERR_INVALID_PARAMETER;
935	}
936
937
938	switch (enmOperation)
939	{
940	/*
941	* GVM requests
942	*/
943	case VMMR0_DO_GVMM_CREATE_VM:
944	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
945	return VERR_INVALID_PARAMETER;
946	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
947
948	case VMMR0_DO_GVMM_DESTROY_VM:
949	if (pReqHdr \|\| u64Arg)
950	return VERR_INVALID_PARAMETER;
951	return GVMMR0DestroyVM(pVM);
952
953	case VMMR0_DO_GVMM_REGISTER_VMCPU:
954	{
955	if (!pVM)
956	return VERR_INVALID_PARAMETER;
957	return GVMMR0RegisterVCpu(pVM, idCpu);
958	}
959
960	case VMMR0_DO_GVMM_SCHED_HALT:
961	if (pReqHdr)
962	return VERR_INVALID_PARAMETER;
963	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
964
965	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
966	if (pReqHdr \|\| u64Arg)
967	return VERR_INVALID_PARAMETER;
968	return GVMMR0SchedWakeUp(pVM, idCpu);
969
970	case VMMR0_DO_GVMM_SCHED_POKE:
971	if (pReqHdr \|\| u64Arg)
972	return VERR_INVALID_PARAMETER;
973	return GVMMR0SchedPoke(pVM, idCpu);
974
975	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
976	if (u64Arg)
977	return VERR_INVALID_PARAMETER;
978	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
979
980	case VMMR0_DO_GVMM_SCHED_POLL:
981	if (pReqHdr \|\| u64Arg > 1)
982	return VERR_INVALID_PARAMETER;
983	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
984
985	case VMMR0_DO_GVMM_QUERY_STATISTICS:
986	if (u64Arg)
987	return VERR_INVALID_PARAMETER;
988	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
989
990	case VMMR0_DO_GVMM_RESET_STATISTICS:
991	if (u64Arg)
992	return VERR_INVALID_PARAMETER;
993	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
994
995	/*
996	* Initialize the R0 part of a VM instance.
997	*/
998	case VMMR0_DO_VMMR0_INIT:
999	return vmmR0InitVM(pVM, RT_LODWORD(u64Arg), RT_HIDWORD(u64Arg));
1000
1001	/*
1002	* Terminate the R0 part of a VM instance.
1003	*/
1004	case VMMR0_DO_VMMR0_TERM:
1005	return VMMR0TermVM(pVM, NULL);
1006
1007	/*
1008	* Attempt to enable hm mode and check the current setting.
1009	*/
1010	case VMMR0_DO_HM_ENABLE:
1011	return HMR0EnableAllCpus(pVM);
1012
1013	/*
1014	* Setup the hardware accelerated session.
1015	*/
1016	case VMMR0_DO_HM_SETUP_VM:
1017	return HMR0SetupVM(pVM);
1018
1019	/*
1020	* Switch to RC to execute Hypervisor function.
1021	*/
1022	case VMMR0_DO_CALL_HYPERVISOR:
1023	{
1024	int rc;
1025	bool fVTxDisabled;
1026
1027	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
1028	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
1029	return VERR_PGM_NO_CR3_SHADOW_ROOT;
1030	#endif
1031
1032	RTCCUINTREG fFlags = ASMIntDisableFlags();
1033
1034	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
1035	RTCPUID idHostCpu = RTMpCpuId();
1036	CPUMR0SetLApic(pVM, idHostCpu);
1037	#endif
1038
1039	/* We might need to disable VT-x if the active switcher turns off paging. */
1040	rc = HMR0EnterSwitcher(pVM, pVM->vmm.s.enmSwitcher, &fVTxDisabled);
1041	if (RT_FAILURE(rc))
1042	return rc;
1043
1044	rc = pVM->vmm.s.pfnR0ToRawMode(pVM);
1045
1046	/* Re-enable VT-x if previously turned off. */
1047	HMR0LeaveSwitcher(pVM, fVTxDisabled);
1048
1049	/** @todo dispatch interrupts? */
1050	ASMSetFlags(fFlags);
1051	return rc;
1052	}
1053
1054	/*
1055	* PGM wrappers.
1056	*/
1057	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
1058	if (idCpu == NIL_VMCPUID)
1059	return VERR_INVALID_CPU_ID;
1060	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
1061
1062	case VMMR0_DO_PGM_FLUSH_HANDY_PAGES:
1063	if (idCpu == NIL_VMCPUID)
1064	return VERR_INVALID_CPU_ID;
1065	return PGMR0PhysFlushHandyPages(pVM, &pVM->aCpus[idCpu]);
1066
1067	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
1068	if (idCpu == NIL_VMCPUID)
1069	return VERR_INVALID_CPU_ID;
1070	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
1071
1072	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
1073	if (idCpu != 0)
1074	return VERR_INVALID_CPU_ID;
1075	return PGMR0PhysSetupIommu(pVM);
1076
1077	/*
1078	* GMM wrappers.
1079	*/
1080	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1081	if (u64Arg)
1082	return VERR_INVALID_PARAMETER;
1083	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
1084
1085	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1086	if (u64Arg)
1087	return VERR_INVALID_PARAMETER;
1088	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
1089
1090	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1091	if (u64Arg)
1092	return VERR_INVALID_PARAMETER;
1093	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
1094
1095	case VMMR0_DO_GMM_FREE_PAGES:
1096	if (u64Arg)
1097	return VERR_INVALID_PARAMETER;
1098	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1099
1100	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1101	if (u64Arg)
1102	return VERR_INVALID_PARAMETER;
1103	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1104
1105	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1106	if (u64Arg)
1107	return VERR_INVALID_PARAMETER;
1108	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
1109
1110	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1111	if (idCpu == NIL_VMCPUID)
1112	return VERR_INVALID_CPU_ID;
1113	if (u64Arg)
1114	return VERR_INVALID_PARAMETER;
1115	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1116
1117	case VMMR0_DO_GMM_BALLOONED_PAGES:
1118	if (u64Arg)
1119	return VERR_INVALID_PARAMETER;
1120	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1121
1122	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1123	if (u64Arg)
1124	return VERR_INVALID_PARAMETER;
1125	return GMMR0MapUnmapChunkReq(pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1126
1127	case VMMR0_DO_GMM_SEED_CHUNK:
1128	if (pReqHdr)
1129	return VERR_INVALID_PARAMETER;
1130	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
1131
1132	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1133	if (idCpu == NIL_VMCPUID)
1134	return VERR_INVALID_CPU_ID;
1135	if (u64Arg)
1136	return VERR_INVALID_PARAMETER;
1137	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1138
1139	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1140	if (idCpu == NIL_VMCPUID)
1141	return VERR_INVALID_CPU_ID;
1142	if (u64Arg)
1143	return VERR_INVALID_PARAMETER;
1144	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1145
1146	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1147	if (idCpu == NIL_VMCPUID)
1148	return VERR_INVALID_CPU_ID;
1149	if ( u64Arg
1150	\|\| pReqHdr)
1151	return VERR_INVALID_PARAMETER;
1152	return GMMR0ResetSharedModules(pVM, idCpu);
1153
1154	#ifdef VBOX_WITH_PAGE_SHARING
1155	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1156	{
1157	if (idCpu == NIL_VMCPUID)
1158	return VERR_INVALID_CPU_ID;
1159	if ( u64Arg
1160	\|\| pReqHdr)
1161	return VERR_INVALID_PARAMETER;
1162
1163	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1164	Assert(pVCpu->hNativeThreadR0 == RTThreadNativeSelf());
1165
1166	# ifdef DEBUG_sandervl
1167	/* 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). */
1168	/* Todo: this can have bad side effects for unexpected jumps back to r3. */
1169	int rc = GMMR0CheckSharedModulesStart(pVM);
1170	if (rc == VINF_SUCCESS)
1171	{
1172	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, GMMR0CheckSharedModules, pVM, pVCpu); /* this may resume code. */
1173	Assert( rc == VINF_SUCCESS
1174	\|\| (rc == VINF_VMM_CALL_HOST && pVCpu->vmm.s.enmCallRing3Operation == VMMCALLRING3_VMM_LOGGER_FLUSH));
1175	GMMR0CheckSharedModulesEnd(pVM);
1176	}
1177	# else
1178	int rc = GMMR0CheckSharedModules(pVM, pVCpu);
1179	# endif
1180	return rc;
1181	}
1182	#endif
1183
1184	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1185	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1186	if (u64Arg)
1187	return VERR_INVALID_PARAMETER;
1188	return GMMR0FindDuplicatePageReq(pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1189	#endif
1190
1191	case VMMR0_DO_GMM_QUERY_STATISTICS:
1192	if (u64Arg)
1193	return VERR_INVALID_PARAMETER;
1194	return GMMR0QueryStatisticsReq(pVM, (PGMMQUERYSTATISTICSSREQ)pReqHdr);
1195
1196	case VMMR0_DO_GMM_RESET_STATISTICS:
1197	if (u64Arg)
1198	return VERR_INVALID_PARAMETER;
1199	return GMMR0ResetStatisticsReq(pVM, (PGMMRESETSTATISTICSSREQ)pReqHdr);
1200
1201	/*
1202	* A quick GCFGM mock-up.
1203	*/
1204	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1205	case VMMR0_DO_GCFGM_SET_VALUE:
1206	case VMMR0_DO_GCFGM_QUERY_VALUE:
1207	{
1208	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1209	return VERR_INVALID_PARAMETER;
1210	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1211	if (pReq->Hdr.cbReq != sizeof(*pReq))
1212	return VERR_INVALID_PARAMETER;
1213	int rc;
1214	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1215	{
1216	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1217	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1218	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1219	}
1220	else
1221	{
1222	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1223	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1224	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1225	}
1226	return rc;
1227	}
1228
1229	/*
1230	* PDM Wrappers.
1231	*/
1232	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1233	{
1234	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1235	return VERR_INVALID_PARAMETER;
1236	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1237	}
1238
1239	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1240	{
1241	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1242	return VERR_INVALID_PARAMETER;
1243	return PDMR0DeviceCallReqHandler(pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1244	}
1245
1246	/*
1247	* Requests to the internal networking service.
1248	*/
1249	case VMMR0_DO_INTNET_OPEN:
1250	{
1251	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1252	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1253	return VERR_INVALID_PARAMETER;
1254	return IntNetR0OpenReq(pSession, pReq);
1255	}
1256
1257	case VMMR0_DO_INTNET_IF_CLOSE:
1258	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1259	return VERR_INVALID_PARAMETER;
1260	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1261
1262	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1263	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1264	return VERR_INVALID_PARAMETER;
1265	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1266
1267	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1268	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1269	return VERR_INVALID_PARAMETER;
1270	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1271
1272	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1273	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1274	return VERR_INVALID_PARAMETER;
1275	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1276
1277	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1278	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1279	return VERR_INVALID_PARAMETER;
1280	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1281
1282	case VMMR0_DO_INTNET_IF_SEND:
1283	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1284	return VERR_INVALID_PARAMETER;
1285	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1286
1287	case VMMR0_DO_INTNET_IF_WAIT:
1288	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1289	return VERR_INVALID_PARAMETER;
1290	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1291
1292	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
1293	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1294	return VERR_INVALID_PARAMETER;
1295	return IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
1296
1297	#ifdef VBOX_WITH_PCI_PASSTHROUGH
1298	/*
1299	* Requests to host PCI driver service.
1300	*/
1301	case VMMR0_DO_PCIRAW_REQ:
1302	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1303	return VERR_INVALID_PARAMETER;
1304	return PciRawR0ProcessReq(pSession, pVM, (PPCIRAWSENDREQ)pReqHdr);
1305	#endif
1306	/*
1307	* For profiling.
1308	*/
1309	case VMMR0_DO_NOP:
1310	case VMMR0_DO_SLOW_NOP:
1311	return VINF_SUCCESS;
1312
1313	/*
1314	* For testing Ring-0 APIs invoked in this environment.
1315	*/
1316	case VMMR0_DO_TESTS:
1317	/** @todo make new test */
1318	return VINF_SUCCESS;
1319
1320
1321	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1322	case VMMR0_DO_TEST_SWITCHER3264:
1323	if (idCpu == NIL_VMCPUID)
1324	return VERR_INVALID_CPU_ID;
1325	return HMR0TestSwitcher3264(pVM);
1326	#endif
1327	default:
1328	/*
1329	* We're returning VERR_NOT_SUPPORT here so we've got something else
1330	* than -1 which the interrupt gate glue code might return.
1331	*/
1332	Log(("operation %#x is not supported\n", enmOperation));
1333	return VERR_NOT_SUPPORTED;
1334	}
1335	}
1336
1337
1338	/**
1339	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1340	*/
1341	typedef struct VMMR0ENTRYEXARGS
1342	{
1343	PVM pVM;
1344	VMCPUID idCpu;
1345	VMMR0OPERATION enmOperation;
1346	PSUPVMMR0REQHDR pReq;
1347	uint64_t u64Arg;
1348	PSUPDRVSESSION pSession;
1349	} VMMR0ENTRYEXARGS;
1350	/** Pointer to a vmmR0EntryExWrapper argument package. */
1351	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1352
1353	/**
1354	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1355	*
1356	* @returns VBox status code.
1357	* @param pvArgs The argument package
1358	*/
1359	static DECLCALLBACK(int) vmmR0EntryExWrapper(void *pvArgs)
1360	{
1361	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1362	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1363	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1364	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1365	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1366	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1367	}
1368
1369
1370	/**
1371	* The Ring 0 entry point, called by the support library (SUP).
1372	*
1373	* @returns VBox status code.
1374	* @param pVM Pointer to the VM.
1375	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1376	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1377	* @param enmOperation Which operation to execute.
1378	* @param pReq Pointer to the SUPVMMR0REQHDR packet. Optional.
1379	* @param u64Arg Some simple constant argument.
1380	* @param pSession The session of the caller.
1381	* @remarks Assume called with interrupts _enabled_.
1382	*/
1383	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1384	{
1385	/*
1386	* Requests that should only happen on the EMT thread will be
1387	* wrapped in a setjmp so we can assert without causing trouble.
1388	*/
1389	if ( VALID_PTR(pVM)
1390	&& pVM->pVMR0
1391	&& idCpu < pVM->cCpus)
1392	{
1393	switch (enmOperation)
1394	{
1395	/* These might/will be called before VMMR3Init. */
1396	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1397	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1398	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1399	case VMMR0_DO_GMM_FREE_PAGES:
1400	case VMMR0_DO_GMM_BALLOONED_PAGES:
1401	/* On the mac we might not have a valid jmp buf, so check these as well. */
1402	case VMMR0_DO_VMMR0_INIT:
1403	case VMMR0_DO_VMMR0_TERM:
1404	{
1405	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1406
1407	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1408	break;
1409
1410	/** @todo validate this EMT claim... GVM knows. */
1411	VMMR0ENTRYEXARGS Args;
1412	Args.pVM = pVM;
1413	Args.idCpu = idCpu;
1414	Args.enmOperation = enmOperation;
1415	Args.pReq = pReq;
1416	Args.u64Arg = u64Arg;
1417	Args.pSession = pSession;
1418	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1419	}
1420
1421	default:
1422	break;
1423	}
1424	}
1425	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1426	}
1427
1428
1429	/**
1430	* Checks whether we've armed the ring-0 long jump machinery.
1431	*
1432	* @returns @c true / @c false
1433	* @param pVCpu The caller's cross context virtual CPU structure.
1434	* @thread EMT
1435	* @sa VMMIsLongJumpArmed
1436	*/
1437	VMMR0_INT_DECL(bool) VMMR0IsLongJumpArmed(PVMCPU pVCpu)
1438	{
1439	#ifdef RT_ARCH_X86
1440	return pVCpu->vmm.s.CallRing3JmpBufR0.eip
1441	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1442	#else
1443	return pVCpu->vmm.s.CallRing3JmpBufR0.rip
1444	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call;
1445	#endif
1446	}
1447
1448
1449	/**
1450	* Internal R0 logger worker: Flush logger.
1451	*
1452	* @param pLogger The logger instance to flush.
1453	* @remark This function must be exported!
1454	*/
1455	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1456	{
1457	#ifdef LOG_ENABLED
1458	/*
1459	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1460	* (This is a bit paranoid code.)
1461	*/
1462	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1463	if ( !VALID_PTR(pR0Logger)
1464	\|\| !VALID_PTR(pR0Logger + 1)
1465	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1466	{
1467	# ifdef DEBUG
1468	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1469	# endif
1470	return;
1471	}
1472	if (pR0Logger->fFlushingDisabled)
1473	return; /* quietly */
1474
1475	PVM pVM = pR0Logger->pVM;
1476	if ( !VALID_PTR(pVM)
1477	\|\| pVM->pVMR0 != pVM)
1478	{
1479	# ifdef DEBUG
1480	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1481	# endif
1482	return;
1483	}
1484
1485	PVMCPU pVCpu = VMMGetCpu(pVM);
1486	if (pVCpu)
1487	{
1488	/*
1489	* Check that the jump buffer is armed.
1490	*/
1491	# ifdef RT_ARCH_X86
1492	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1493	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1494	# else
1495	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1496	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1497	# endif
1498	{
1499	# ifdef DEBUG
1500	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1501	# endif
1502	return;
1503	}
1504	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1505	}
1506	# ifdef DEBUG
1507	else
1508	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
1509	# endif
1510	#endif
1511	}
1512
1513	/**
1514	* Internal R0 logger worker: Custom prefix.
1515	*
1516	* @returns Number of chars written.
1517	*
1518	* @param pLogger The logger instance.
1519	* @param pchBuf The output buffer.
1520	* @param cchBuf The size of the buffer.
1521	* @param pvUser User argument (ignored).
1522	*/
1523	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1524	{
1525	NOREF(pvUser);
1526	#ifdef LOG_ENABLED
1527	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1528	if ( !VALID_PTR(pR0Logger)
1529	\|\| !VALID_PTR(pR0Logger + 1)
1530	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1531	\|\| cchBuf < 2)
1532	return 0;
1533
1534	static const char s_szHex[17] = "0123456789abcdef";
1535	VMCPUID const idCpu = pR0Logger->idCpu;
1536	pchBuf[1] = s_szHex[ idCpu & 15];
1537	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1538
1539	return 2;
1540	#else
1541	return 0;
1542	#endif
1543	}
1544
1545	#ifdef LOG_ENABLED
1546
1547	/**
1548	* Disables flushing of the ring-0 debug log.
1549	*
1550	* @param pVCpu Pointer to the VMCPU.
1551	*/
1552	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1553	{
1554	if (pVCpu->vmm.s.pR0LoggerR0)
1555	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1556	}
1557
1558
1559	/**
1560	* Enables flushing of the ring-0 debug log.
1561	*
1562	* @param pVCpu Pointer to the VMCPU.
1563	*/
1564	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1565	{
1566	if (pVCpu->vmm.s.pR0LoggerR0)
1567	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1568	}
1569
1570
1571	/**
1572	* Checks if log flushing is disabled or not.
1573	*
1574	* @param pVCpu Pointer to the VMCPU.
1575	*/
1576	VMMR0DECL(bool) VMMR0IsLogFlushDisabled(PVMCPU pVCpu)
1577	{
1578	if (pVCpu->vmm.s.pR0LoggerR0)
1579	return pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled;
1580	return true;
1581	}
1582	#endif /* LOG_ENABLED */
1583
1584	/**
1585	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1586	*
1587	* @returns true if the breakpoint should be hit, false if it should be ignored.
1588	*/
1589	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1590	{
1591	#if 0
1592	return true;
1593	#else
1594	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1595	if (pVM)
1596	{
1597	PVMCPU pVCpu = VMMGetCpu(pVM);
1598
1599	if (pVCpu)
1600	{
1601	#ifdef RT_ARCH_X86
1602	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1603	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1604	#else
1605	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1606	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1607	#endif
1608	{
1609	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1610	return RT_FAILURE_NP(rc);
1611	}
1612	}
1613	}
1614	#ifdef RT_OS_LINUX
1615	return true;
1616	#else
1617	return false;
1618	#endif
1619	#endif
1620	}
1621
1622
1623	/**
1624	* Override this so we can push it up to ring-3.
1625	*
1626	* @param pszExpr Expression. Can be NULL.
1627	* @param uLine Location line number.
1628	* @param pszFile Location file name.
1629	* @param pszFunction Location function name.
1630	*/
1631	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1632	{
1633	/*
1634	* To the log.
1635	*/
1636	LogAlways(("\n!!R0-Assertion Failed!!\n"
1637	"Expression: %s\n"
1638	"Location : %s(%d) %s\n",
1639	pszExpr, pszFile, uLine, pszFunction));
1640
1641	/*
1642	* To the global VMM buffer.
1643	*/
1644	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1645	if (pVM)
1646	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1647	"\n!!R0-Assertion Failed!!\n"
1648	"Expression: %s\n"
1649	"Location : %s(%d) %s\n",
1650	pszExpr, pszFile, uLine, pszFunction);
1651
1652	/*
1653	* Continue the normal way.
1654	*/
1655	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1656	}
1657
1658
1659	/**
1660	* Callback for RTLogFormatV which writes to the ring-3 log port.
1661	* See PFNLOGOUTPUT() for details.
1662	*/
1663	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1664	{
1665	for (size_t i = 0; i < cbChars; i++)
1666	LogAlways(("%c", pachChars[i]));
1667
1668	NOREF(pv);
1669	return cbChars;
1670	}
1671
1672
1673	/**
1674	* Override this so we can push it up to ring-3.
1675	*
1676	* @param pszFormat The format string.
1677	* @param va Arguments.
1678	*/
1679	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1680	{
1681	va_list vaCopy;
1682
1683	/*
1684	* Push the message to the loggers.
1685	*/
1686	PRTLOGGER pLog = RTLogGetDefaultInstance(); /* Don't initialize it here... */
1687	if (pLog)
1688	{
1689	va_copy(vaCopy, va);
1690	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1691	va_end(vaCopy);
1692	}
1693	pLog = RTLogRelDefaultInstance();
1694	if (pLog)
1695	{
1696	va_copy(vaCopy, va);
1697	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1698	va_end(vaCopy);
1699	}
1700
1701	/*
1702	* Push it to the global VMM buffer.
1703	*/
1704	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1705	if (pVM)
1706	{
1707	va_copy(vaCopy, va);
1708	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1709	va_end(vaCopy);
1710	}
1711
1712	/*
1713	* Continue the normal way.
1714	*/
1715	RTAssertMsg2V(pszFormat, va);
1716	}
1717

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 47473

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