VMMR0.cpp@ 20981

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1	/* $Id: VMMR0.cpp 20981 2009-06-26 15:03:24Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_VMM
26	#include <VBox/vmm.h>
27	#include <VBox/sup.h>
28	#include <VBox/trpm.h>
29	#include <VBox/cpum.h>
30	#include <VBox/pgm.h>
31	#include <VBox/stam.h>
32	#include <VBox/tm.h>
33	#include "VMMInternal.h"
34	#include <VBox/vm.h>
35
36	#include <VBox/gvmm.h>
37	#include <VBox/gmm.h>
38	#include <VBox/intnet.h>
39	#include <VBox/hwaccm.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/assert.h>
46	#include <iprt/mp.h>
47	#include <iprt/stdarg.h>
48	#include <iprt/string.h>
49	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
50	# include <iprt/thread.h>
51	#endif
52
53	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
54	# pragma intrinsic(_AddressOfReturnAddress)
55	#endif
56
57
58	/*******************************************************************************
59	* Internal Functions *
60	*******************************************************************************/
61	RT_C_DECLS_BEGIN
62	VMMR0DECL(int) ModuleInit(void);
63	VMMR0DECL(void) ModuleTerm(void);
64	RT_C_DECLS_END
65
66
67	/*******************************************************************************
68	* Global Variables *
69	*******************************************************************************/
70	/** Pointer to the internal networking service instance. */
71	PINTNET g_pIntNet = 0;
72
73
74	/**
75	* Initialize the module.
76	* This is called when we're first loaded.
77	*
78	* @returns 0 on success.
79	* @returns VBox status on failure.
80	*/
81	VMMR0DECL(int) ModuleInit(void)
82	{
83	LogFlow(("ModuleInit:\n"));
84
85	/*
86	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
87	*/
88	int rc = GVMMR0Init();
89	if (RT_SUCCESS(rc))
90	{
91	rc = GMMR0Init();
92	if (RT_SUCCESS(rc))
93	{
94	rc = HWACCMR0Init();
95	if (RT_SUCCESS(rc))
96	{
97	rc = PGMRegisterStringFormatTypes();
98	if (RT_SUCCESS(rc))
99	{
100	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
101	rc = PGMR0DynMapInit();
102	#endif
103	if (RT_SUCCESS(rc))
104	{
105	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
106	g_pIntNet = NULL;
107	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
108	rc = INTNETR0Create(&g_pIntNet);
109	if (RT_SUCCESS(rc))
110	{
111	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
112	return VINF_SUCCESS;
113	}
114
115	/* bail out */
116	g_pIntNet = NULL;
117	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
118	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
119	PGMR0DynMapTerm();
120	#endif
121	}
122	PGMDeregisterStringFormatTypes();
123	}
124	HWACCMR0Term();
125	}
126	GMMR0Term();
127	}
128	GVMMR0Term();
129	}
130
131	LogFlow(("ModuleInit: failed %Rrc\n", rc));
132	return rc;
133	}
134
135
136	/**
137	* Terminate the module.
138	* This is called when we're finally unloaded.
139	*/
140	VMMR0DECL(void) ModuleTerm(void)
141	{
142	LogFlow(("ModuleTerm:\n"));
143
144	/*
145	* Destroy the internal networking instance.
146	*/
147	if (g_pIntNet)
148	{
149	INTNETR0Destroy(g_pIntNet);
150	g_pIntNet = NULL;
151	}
152
153	/*
154	* PGM (Darwin) and HWACCM global cleanup.
155	* Destroy the GMM and GVMM instances.
156	*/
157	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
158	PGMR0DynMapTerm();
159	#endif
160	PGMDeregisterStringFormatTypes();
161	HWACCMR0Term();
162
163	GMMR0Term();
164	GVMMR0Term();
165
166	LogFlow(("ModuleTerm: returns\n"));
167	}
168
169
170	/**
171	* Initaties the R0 driver for a particular VM instance.
172	*
173	* @returns VBox status code.
174	*
175	* @param pVM The VM instance in question.
176	* @param uSvnRev The SVN revision of the ring-3 part.
177	* @thread EMT.
178	*/
179	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
180	{
181	/*
182	* Match the SVN revisions.
183	*/
184	if (uSvnRev != VMMGetSvnRev())
185	{
186	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
187	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
188	return VERR_VERSION_MISMATCH;
189	}
190	if ( !VALID_PTR(pVM)
191	\|\| pVM->pVMR0 != pVM)
192	return VERR_INVALID_PARAMETER;
193
194	#ifdef LOG_ENABLED
195	/*
196	* Register the EMT R0 logger instance for VCPU 0.
197	*/
198	PVMCPU pVCpu = &pVM->aCpus[0];
199
200	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
201	if (pR0Logger)
202	{
203	# if 0 /* testing of the logger. */
204	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
205	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
206	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
207	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
208
209	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
210	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
211	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
212	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
213
214	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
215	LogCom(("vmmR0InitVM: returned succesfully from direct logger call.\n"));
216	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
217	LogCom(("vmmR0InitVM: returned succesfully from direct flush call.\n"));
218
219	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
220	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
221	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
222	LogCom(("vmmR0InitVM: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
223	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
224	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
225
226	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
227	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
228
229	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
230	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
231	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
232	# endif
233	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
234	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
235	pR0Logger->fRegistered = true;
236	}
237	#endif /* LOG_ENABLED */
238
239	/*
240	* Initialize the per VM data for GVMM and GMM.
241	*/
242	int rc = GVMMR0InitVM(pVM);
243	// if (RT_SUCCESS(rc))
244	// rc = GMMR0InitPerVMData(pVM);
245	if (RT_SUCCESS(rc))
246	{
247	/*
248	* Init HWACCM, CPUM and PGM (Darwin only).
249	*/
250	rc = HWACCMR0InitVM(pVM);
251	if (RT_SUCCESS(rc))
252	{
253	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
254	if (RT_SUCCESS(rc))
255	{
256	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
257	rc = PGMR0DynMapInitVM(pVM);
258	#endif
259	if (RT_SUCCESS(rc))
260	{
261	GVMMR0DoneInitVM(pVM);
262	return rc;
263	}
264
265	/* bail out */
266	}
267	HWACCMR0TermVM(pVM);
268	}
269	}
270	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
271	return rc;
272	}
273
274
275	/**
276	* Terminates the R0 driver for a particular VM instance.
277	*
278	* This is normally called by ring-3 as part of the VM termination process, but
279	* may alternatively be called during the support driver session cleanup when
280	* the VM object is destroyed (see GVMM).
281	*
282	* @returns VBox status code.
283	*
284	* @param pVM The VM instance in question.
285	* @param pGVM Pointer to the global VM structure. Optional.
286	* @thread EMT or session clean up thread.
287	*/
288	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
289	{
290	/*
291	* Tell GVMM what we're up to and check that we only do this once.
292	*/
293	if (GVMMR0DoingTermVM(pVM, pGVM))
294	{
295	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
296	PGMR0DynMapTermVM(pVM);
297	#endif
298	HWACCMR0TermVM(pVM);
299	}
300
301	/*
302	* Deregister the logger.
303	*/
304	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
305	return VINF_SUCCESS;
306	}
307
308
309	#ifdef VBOX_WITH_STATISTICS
310	/**
311	* Record return code statistics
312	* @param pVM The VM handle.
313	* @param pVCpu The VMCPU handle.
314	* @param rc The status code.
315	*/
316	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
317	{
318	/*
319	* Collect statistics.
320	*/
321	switch (rc)
322	{
323	case VINF_SUCCESS:
324	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
325	break;
326	case VINF_EM_RAW_INTERRUPT:
327	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
328	break;
329	case VINF_EM_RAW_INTERRUPT_HYPER:
330	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
331	break;
332	case VINF_EM_RAW_GUEST_TRAP:
333	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
334	break;
335	case VINF_EM_RAW_RING_SWITCH:
336	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
337	break;
338	case VINF_EM_RAW_RING_SWITCH_INT:
339	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
340	break;
341	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
342	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetExceptionPrivilege);
343	break;
344	case VINF_EM_RAW_STALE_SELECTOR:
345	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
346	break;
347	case VINF_EM_RAW_IRET_TRAP:
348	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
349	break;
350	case VINF_IOM_HC_IOPORT_READ:
351	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
352	break;
353	case VINF_IOM_HC_IOPORT_WRITE:
354	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
355	break;
356	case VINF_IOM_HC_MMIO_READ:
357	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
358	break;
359	case VINF_IOM_HC_MMIO_WRITE:
360	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
361	break;
362	case VINF_IOM_HC_MMIO_READ_WRITE:
363	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
364	break;
365	case VINF_PATM_HC_MMIO_PATCH_READ:
366	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
367	break;
368	case VINF_PATM_HC_MMIO_PATCH_WRITE:
369	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
370	break;
371	case VINF_EM_RAW_EMULATE_INSTR:
372	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
373	break;
374	case VINF_EM_RAW_EMULATE_IO_BLOCK:
375	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
376	break;
377	case VINF_PATCH_EMULATE_INSTR:
378	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
379	break;
380	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
381	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
382	break;
383	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
384	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
385	break;
386	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
387	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
388	break;
389	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
390	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
391	break;
392	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
393	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
394	break;
395	case VINF_CSAM_PENDING_ACTION:
396	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
397	break;
398	case VINF_PGM_SYNC_CR3:
399	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
400	break;
401	case VINF_PATM_PATCH_INT3:
402	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
403	break;
404	case VINF_PATM_PATCH_TRAP_PF:
405	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
406	break;
407	case VINF_PATM_PATCH_TRAP_GP:
408	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
409	break;
410	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
411	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
412	break;
413	case VINF_EM_RESCHEDULE_REM:
414	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
415	break;
416	case VINF_EM_RAW_TO_R3:
417	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
418	break;
419	case VINF_EM_RAW_TIMER_PENDING:
420	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
421	break;
422	case VINF_EM_RAW_INTERRUPT_PENDING:
423	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
424	break;
425	case VINF_VMM_CALL_HOST:
426	switch (pVCpu->vmm.s.enmCallRing3Operation)
427	{
428	case VMMCALLRING3_PDM_LOCK:
429	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
430	break;
431	case VMMCALLRING3_PDM_QUEUE_FLUSH:
432	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
433	break;
434	case VMMCALLRING3_PGM_POOL_GROW:
435	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
436	break;
437	case VMMCALLRING3_PGM_LOCK:
438	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
439	break;
440	case VMMCALLRING3_PGM_MAP_CHUNK:
441	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
442	break;
443	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
444	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
445	break;
446	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
447	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
448	break;
449	case VMMCALLRING3_VMM_LOGGER_FLUSH:
450	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
451	break;
452	case VMMCALLRING3_VM_SET_ERROR:
453	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
454	break;
455	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
456	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
457	break;
458	case VMMCALLRING3_VM_R0_ASSERTION:
459	default:
460	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
461	break;
462	}
463	break;
464	case VINF_PATM_DUPLICATE_FUNCTION:
465	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
466	break;
467	case VINF_PGM_CHANGE_MODE:
468	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
469	break;
470	case VINF_EM_RAW_EMULATE_INSTR_HLT:
471	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulHlt);
472	break;
473	case VINF_EM_PENDING_REQUEST:
474	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
475	break;
476	default:
477	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
478	break;
479	}
480	}
481	#endif /* VBOX_WITH_STATISTICS */
482
483
484	/**
485	* Unused ring-0 entry point that used to be called from the interrupt gate.
486	*
487	* Will be removed one of the next times we do a major SUPDrv version bump.
488	*
489	* @returns VBox status code.
490	* @param pVM The VM to operate on.
491	* @param enmOperation Which operation to execute.
492	* @param pvArg Argument to the operation.
493	* @remarks Assume called with interrupts disabled.
494	*/
495	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
496	{
497	/*
498	* We're returning VERR_NOT_SUPPORT here so we've got something else
499	* than -1 which the interrupt gate glue code might return.
500	*/
501	Log(("operation %#x is not supported\n", enmOperation));
502	return VERR_NOT_SUPPORTED;
503	}
504
505
506	/**
507	* The Ring 0 entry point, called by the fast-ioctl path.
508	*
509	* @param pVM The VM to operate on.
510	* The return code is stored in pVM->vmm.s.iLastGZRc.
511	* @param idCpu The Virtual CPU ID of the calling EMT.
512	* @param enmOperation Which operation to execute.
513	* @remarks Assume called with interrupts _enabled_.
514	*/
515	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
516	{
517	if (RT_UNLIKELY(idCpu >= pVM->cCPUs))
518	return;
519	PVMCPU pVCpu = &pVM->aCpus[idCpu];
520
521	switch (enmOperation)
522	{
523	/*
524	* Switch to GC and run guest raw mode code.
525	* Disable interrupts before doing the world switch.
526	*/
527	case VMMR0_DO_RAW_RUN:
528	{
529	/* Safety precaution as hwaccm disables the switcher. */
530	if (RT_LIKELY(!pVM->vmm.s.fSwitcherDisabled))
531	{
532	RTCCUINTREG uFlags = ASMIntDisableFlags();
533	int rc;
534	bool fVTxDisabled;
535
536	if (RT_UNLIKELY(pVM->cCPUs > 1))
537	{
538	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
539	return;
540	}
541
542	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
543	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
544	{
545	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
546	return;
547	}
548	#endif
549
550	/* We might need to disable VT-x if the active switcher turns off paging. */
551	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
552	if (RT_FAILURE(rc))
553	{
554	pVCpu->vmm.s.iLastGZRc = rc;
555	return;
556	}
557
558	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
559	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
560
561	TMNotifyStartOfExecution(pVCpu);
562	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
563	pVCpu->vmm.s.iLastGZRc = rc;
564	TMNotifyEndOfExecution(pVCpu);
565
566	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
567	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
568
569	/* Re-enable VT-x if previously turned off. */
570	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
571
572	if ( rc == VINF_EM_RAW_INTERRUPT
573	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
574	TRPMR0DispatchHostInterrupt(pVM);
575
576	ASMSetFlags(uFlags);
577
578	#ifdef VBOX_WITH_STATISTICS
579	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
580	vmmR0RecordRC(pVM, pVCpu, rc);
581	#endif
582	}
583	else
584	{
585	Assert(!pVM->vmm.s.fSwitcherDisabled);
586	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
587	}
588	break;
589	}
590
591	/*
592	* Run guest code using the available hardware acceleration technology.
593	*
594	* Disable interrupts before we do anything interesting. On Windows we avoid
595	* this by having the support driver raise the IRQL before calling us, this way
596	* we hope to get away with page faults and later calling into the kernel.
597	*/
598	case VMMR0_DO_HWACC_RUN:
599	{
600	int rc;
601
602	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
603
604	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
605	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
606	RTThreadPreemptDisable(&PreemptState);
607	#elif !defined(RT_OS_WINDOWS)
608	RTCCUINTREG uFlags = ASMIntDisableFlags();
609	#endif
610	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
611
612	#ifdef LOG_ENABLED
613	if (pVCpu->idCpu > 0)
614	{
615	/* Lazy registration of ring 0 loggers. */
616	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
617	if ( pR0Logger
618	&& !pR0Logger->fRegistered)
619	{
620	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
621	pR0Logger->fRegistered = true;
622	}
623	}
624	#endif
625	if (!HWACCMR0SuspendPending())
626	{
627	rc = HWACCMR0Enter(pVM, pVCpu);
628	if (RT_SUCCESS(rc))
629	{
630	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
631	int rc2 = HWACCMR0Leave(pVM, pVCpu);
632	AssertRC(rc2);
633	}
634	}
635	else
636	{
637	/* System is about to go into suspend mode; go back to ring 3. */
638	rc = VINF_EM_RAW_INTERRUPT;
639	}
640	pVCpu->vmm.s.iLastGZRc = rc;
641
642	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
643	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
644	RTThreadPreemptRestore(&PreemptState);
645	#elif !defined(RT_OS_WINDOWS)
646	ASMSetFlags(uFlags);
647	#endif
648
649	#ifdef VBOX_WITH_STATISTICS
650	vmmR0RecordRC(pVM, pVCpu, rc);
651	#endif
652	/* No special action required for external interrupts, just return. */
653	break;
654	}
655
656	/*
657	* For profiling.
658	*/
659	case VMMR0_DO_NOP:
660	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
661	break;
662
663	/*
664	* Impossible.
665	*/
666	default:
667	AssertMsgFailed(("%#x\n", enmOperation));
668	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
669	break;
670	}
671	}
672
673
674	/**
675	* Validates a session or VM session argument.
676	*
677	* @returns true / false accordingly.
678	* @param pVM The VM argument.
679	* @param pSession The session argument.
680	*/
681	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
682	{
683	/* This must be set! */
684	if (!pSession)
685	return false;
686
687	/* Only one out of the two. */
688	if (pVM && pClaimedSession)
689	return false;
690	if (pVM)
691	pClaimedSession = pVM->pSession;
692	return pClaimedSession == pSession;
693	}
694
695
696	/**
697	* VMMR0EntryEx worker function, either called directly or when ever possible
698	* called thru a longjmp so we can exit safely on failure.
699	*
700	* @returns VBox status code.
701	* @param pVM The VM to operate on.
702	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
703	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
704	* @param enmOperation Which operation to execute.
705	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
706	* The support driver validates this if it's present.
707	* @param u64Arg Some simple constant argument.
708	* @param pSession The session of the caller.
709	* @remarks Assume called with interrupts _enabled_.
710	*/
711	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
712	{
713	/*
714	* Common VM pointer validation.
715	*/
716	if (pVM)
717	{
718	if (RT_UNLIKELY( !VALID_PTR(pVM)
719	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
720	{
721	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
722	return VERR_INVALID_POINTER;
723	}
724	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
725	\|\| pVM->enmVMState > VMSTATE_TERMINATED
726	\|\| pVM->pVMR0 != pVM))
727	{
728	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
729	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
730	return VERR_INVALID_POINTER;
731	}
732
733	if (RT_UNLIKELY(idCpu >= pVM->cCPUs && idCpu != NIL_VMCPUID))
734	{
735	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCPUs=%u)\n", idCpu, pVM->cCPUs);
736	return VERR_INVALID_PARAMETER;
737	}
738	}
739	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
740	{
741	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
742	return VERR_INVALID_PARAMETER;
743	}
744
745
746	switch (enmOperation)
747	{
748	/*
749	* GVM requests
750	*/
751	case VMMR0_DO_GVMM_CREATE_VM:
752	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
753	return VERR_INVALID_PARAMETER;
754	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
755
756	case VMMR0_DO_GVMM_DESTROY_VM:
757	if (pReqHdr \|\| u64Arg)
758	return VERR_INVALID_PARAMETER;
759	return GVMMR0DestroyVM(pVM);
760
761	case VMMR0_DO_GVMM_REGISTER_VMCPU:
762	{
763	if (!pVM)
764	return VERR_INVALID_PARAMETER;
765	return GVMMR0RegisterVCpu(pVM, idCpu);
766	}
767
768	case VMMR0_DO_GVMM_SCHED_HALT:
769	if (pReqHdr)
770	return VERR_INVALID_PARAMETER;
771	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
772
773	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
774	if (pReqHdr \|\| u64Arg)
775	return VERR_INVALID_PARAMETER;
776	return GVMMR0SchedWakeUp(pVM, idCpu);
777
778	case VMMR0_DO_GVMM_SCHED_POKE:
779	if (pReqHdr \|\| u64Arg)
780	return VERR_INVALID_PARAMETER;
781	return GVMMR0SchedPoke(pVM, idCpu);
782
783	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
784	if (u64Arg)
785	return VERR_INVALID_PARAMETER;
786	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
787
788	case VMMR0_DO_GVMM_SCHED_POLL:
789	if (pReqHdr \|\| u64Arg > 1)
790	return VERR_INVALID_PARAMETER;
791	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
792
793	case VMMR0_DO_GVMM_QUERY_STATISTICS:
794	if (u64Arg)
795	return VERR_INVALID_PARAMETER;
796	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
797
798	case VMMR0_DO_GVMM_RESET_STATISTICS:
799	if (u64Arg)
800	return VERR_INVALID_PARAMETER;
801	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
802
803	/*
804	* Initialize the R0 part of a VM instance.
805	*/
806	case VMMR0_DO_VMMR0_INIT:
807	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
808
809	/*
810	* Terminate the R0 part of a VM instance.
811	*/
812	case VMMR0_DO_VMMR0_TERM:
813	return VMMR0TermVM(pVM, NULL);
814
815	/*
816	* Attempt to enable hwacc mode and check the current setting.
817	*
818	*/
819	case VMMR0_DO_HWACC_ENABLE:
820	return HWACCMR0EnableAllCpus(pVM);
821
822	/*
823	* Setup the hardware accelerated raw-mode session.
824	*/
825	case VMMR0_DO_HWACC_SETUP_VM:
826	{
827	RTCCUINTREG fFlags = ASMIntDisableFlags();
828	int rc = HWACCMR0SetupVM(pVM);
829	ASMSetFlags(fFlags);
830	return rc;
831	}
832
833	/*
834	* Switch to RC to execute Hypervisor function.
835	*/
836	case VMMR0_DO_CALL_HYPERVISOR:
837	{
838	int rc;
839	bool fVTxDisabled;
840
841	/* Safety precaution as HWACCM can disable the switcher. */
842	Assert(!pVM->vmm.s.fSwitcherDisabled);
843	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
844	return VERR_NOT_SUPPORTED;
845
846	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
847	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
848	return VERR_PGM_NO_CR3_SHADOW_ROOT;
849	#endif
850
851	RTCCUINTREG fFlags = ASMIntDisableFlags();
852
853	/* We might need to disable VT-x if the active switcher turns off paging. */
854	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
855	if (RT_FAILURE(rc))
856	return rc;
857
858	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
859
860	/* Re-enable VT-x if previously turned off. */
861	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
862
863	/** @todo dispatch interrupts? */
864	ASMSetFlags(fFlags);
865	return rc;
866	}
867
868	/*
869	* PGM wrappers.
870	*/
871	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
872	if (idCpu == NIL_VMCPUID)
873	return VERR_INVALID_CPU_ID;
874	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
875
876	/*
877	* GMM wrappers.
878	*/
879	case VMMR0_DO_GMM_INITIAL_RESERVATION:
880	if (u64Arg)
881	return VERR_INVALID_PARAMETER;
882	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
883
884	case VMMR0_DO_GMM_UPDATE_RESERVATION:
885	if (u64Arg)
886	return VERR_INVALID_PARAMETER;
887	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
888
889	case VMMR0_DO_GMM_ALLOCATE_PAGES:
890	if (u64Arg)
891	return VERR_INVALID_PARAMETER;
892	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
893
894	case VMMR0_DO_GMM_FREE_PAGES:
895	if (u64Arg)
896	return VERR_INVALID_PARAMETER;
897	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
898
899	case VMMR0_DO_GMM_BALLOONED_PAGES:
900	if (u64Arg)
901	return VERR_INVALID_PARAMETER;
902	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
903
904	case VMMR0_DO_GMM_DEFLATED_BALLOON:
905	if (pReqHdr)
906	return VERR_INVALID_PARAMETER;
907	return GMMR0DeflatedBalloon(pVM, idCpu, (uint32_t)u64Arg);
908
909	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
910	if (u64Arg)
911	return VERR_INVALID_PARAMETER;
912	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
913
914	case VMMR0_DO_GMM_SEED_CHUNK:
915	if (pReqHdr)
916	return VERR_INVALID_PARAMETER;
917	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
918
919	/*
920	* A quick GCFGM mock-up.
921	*/
922	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
923	case VMMR0_DO_GCFGM_SET_VALUE:
924	case VMMR0_DO_GCFGM_QUERY_VALUE:
925	{
926	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
927	return VERR_INVALID_PARAMETER;
928	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
929	if (pReq->Hdr.cbReq != sizeof(*pReq))
930	return VERR_INVALID_PARAMETER;
931	int rc;
932	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
933	{
934	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
935	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
936	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
937	}
938	else
939	{
940	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
941	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
942	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
943	}
944	return rc;
945	}
946
947
948	/*
949	* Requests to the internal networking service.
950	*/
951	case VMMR0_DO_INTNET_OPEN:
952	{
953	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
954	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
955	return VERR_INVALID_PARAMETER;
956	if (!g_pIntNet)
957	return VERR_NOT_SUPPORTED;
958	return INTNETR0OpenReq(g_pIntNet, pSession, pReq);
959	}
960
961	case VMMR0_DO_INTNET_IF_CLOSE:
962	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
963	return VERR_INVALID_PARAMETER;
964	if (!g_pIntNet)
965	return VERR_NOT_SUPPORTED;
966	return INTNETR0IfCloseReq(g_pIntNet, pSession, (PINTNETIFCLOSEREQ)pReqHdr);
967
968	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
969	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETRING3BUFFERREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
970	return VERR_INVALID_PARAMETER;
971	if (!g_pIntNet)
972	return VERR_NOT_SUPPORTED;
973	return INTNETR0IfGetRing3BufferReq(g_pIntNet, pSession, (PINTNETIFGETRING3BUFFERREQ)pReqHdr);
974
975	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
976	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
977	return VERR_INVALID_PARAMETER;
978	if (!g_pIntNet)
979	return VERR_NOT_SUPPORTED;
980	return INTNETR0IfSetPromiscuousModeReq(g_pIntNet, pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
981
982	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
983	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
984	return VERR_INVALID_PARAMETER;
985	if (!g_pIntNet)
986	return VERR_NOT_SUPPORTED;
987	return INTNETR0IfSetMacAddressReq(g_pIntNet, pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
988
989	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
990	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
991	return VERR_INVALID_PARAMETER;
992	if (!g_pIntNet)
993	return VERR_NOT_SUPPORTED;
994	return INTNETR0IfSetActiveReq(g_pIntNet, pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
995
996	case VMMR0_DO_INTNET_IF_SEND:
997	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
998	return VERR_INVALID_PARAMETER;
999	if (!g_pIntNet)
1000	return VERR_NOT_SUPPORTED;
1001	return INTNETR0IfSendReq(g_pIntNet, pSession, (PINTNETIFSENDREQ)pReqHdr);
1002
1003	case VMMR0_DO_INTNET_IF_WAIT:
1004	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1005	return VERR_INVALID_PARAMETER;
1006	if (!g_pIntNet)
1007	return VERR_NOT_SUPPORTED;
1008	return INTNETR0IfWaitReq(g_pIntNet, pSession, (PINTNETIFWAITREQ)pReqHdr);
1009
1010	/*
1011	* For profiling.
1012	*/
1013	case VMMR0_DO_NOP:
1014	case VMMR0_DO_SLOW_NOP:
1015	return VINF_SUCCESS;
1016
1017	/*
1018	* For testing Ring-0 APIs invoked in this environment.
1019	*/
1020	case VMMR0_DO_TESTS:
1021	/** @todo make new test */
1022	return VINF_SUCCESS;
1023
1024
1025	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1026	case VMMR0_DO_TEST_SWITCHER3264:
1027	if (idCpu == NIL_VMCPUID)
1028	return VERR_INVALID_CPU_ID;
1029	return HWACCMR0TestSwitcher3264(pVM);
1030	#endif
1031	default:
1032	/*
1033	* We're returning VERR_NOT_SUPPORT here so we've got something else
1034	* than -1 which the interrupt gate glue code might return.
1035	*/
1036	Log(("operation %#x is not supported\n", enmOperation));
1037	return VERR_NOT_SUPPORTED;
1038	}
1039	}
1040
1041
1042	/**
1043	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1044	*/
1045	typedef struct VMMR0ENTRYEXARGS
1046	{
1047	PVM pVM;
1048	VMCPUID idCpu;
1049	VMMR0OPERATION enmOperation;
1050	PSUPVMMR0REQHDR pReq;
1051	uint64_t u64Arg;
1052	PSUPDRVSESSION pSession;
1053	} VMMR0ENTRYEXARGS;
1054	/** Pointer to a vmmR0EntryExWrapper argument package. */
1055	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1056
1057	/**
1058	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1059	*
1060	* @returns VBox status code.
1061	* @param pvArgs The argument package
1062	*/
1063	static int vmmR0EntryExWrapper(void *pvArgs)
1064	{
1065	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1066	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1067	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1068	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1069	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1070	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1071	}
1072
1073
1074	/**
1075	* The Ring 0 entry point, called by the support library (SUP).
1076	*
1077	* @returns VBox status code.
1078	* @param pVM The VM to operate on.
1079	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1080	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1081	* @param enmOperation Which operation to execute.
1082	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1083	* @param u64Arg Some simple constant argument.
1084	* @param pSession The session of the caller.
1085	* @remarks Assume called with interrupts _enabled_.
1086	*/
1087	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1088	{
1089	/*
1090	* Requests that should only happen on the EMT thread will be
1091	* wrapped in a setjmp so we can assert without causing trouble.
1092	*/
1093	if ( VALID_PTR(pVM)
1094	&& pVM->pVMR0
1095	&& idCpu < pVM->cCPUs)
1096	{
1097	switch (enmOperation)
1098	{
1099	/* These might/will be called before VMMR3Init. */
1100	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1101	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1102	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1103	case VMMR0_DO_GMM_FREE_PAGES:
1104	case VMMR0_DO_GMM_BALLOONED_PAGES:
1105	case VMMR0_DO_GMM_DEFLATED_BALLOON:
1106	/* On the mac we might not have a valid jmp buf, so check these as well. */
1107	case VMMR0_DO_VMMR0_INIT:
1108	case VMMR0_DO_VMMR0_TERM:
1109	{
1110	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1111
1112	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1113	break;
1114
1115	/** @todo validate this EMT claim... GVM knows. */
1116	VMMR0ENTRYEXARGS Args;
1117	Args.pVM = pVM;
1118	Args.idCpu = idCpu;
1119	Args.enmOperation = enmOperation;
1120	Args.pReq = pReq;
1121	Args.u64Arg = u64Arg;
1122	Args.pSession = pSession;
1123	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1124	}
1125
1126	default:
1127	break;
1128	}
1129	}
1130	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1131	}
1132
1133	/**
1134	* Internal R0 logger worker: Flush logger.
1135	*
1136	* @param pLogger The logger instance to flush.
1137	* @remark This function must be exported!
1138	*/
1139	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1140	{
1141	#ifdef LOG_ENABLED
1142	/*
1143	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1144	* (This is a bit paranoid code.)
1145	*/
1146	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1147	if ( !VALID_PTR(pR0Logger)
1148	\|\| !VALID_PTR(pR0Logger + 1)
1149	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1150	{
1151	# ifdef DEBUG
1152	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1153	# endif
1154	return;
1155	}
1156	if (pR0Logger->fFlushingDisabled)
1157	return; /* quietly */
1158
1159	PVM pVM = pR0Logger->pVM;
1160	if ( !VALID_PTR(pVM)
1161	\|\| pVM->pVMR0 != pVM)
1162	{
1163	# ifdef DEBUG
1164	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1165	# endif
1166	return;
1167	}
1168
1169	PVMCPU pVCpu = VMMGetCpu(pVM);
1170
1171	/*
1172	* Check that the jump buffer is armed.
1173	*/
1174	# ifdef RT_ARCH_X86
1175	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1176	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1177	# else
1178	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1179	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1180	# endif
1181	{
1182	# ifdef DEBUG
1183	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1184	# endif
1185	return;
1186	}
1187	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1188	#endif
1189	}
1190
1191	/**
1192	* Interal R0 logger worker: Custom prefix.
1193	*
1194	* @returns Number of chars written.
1195	*
1196	* @param pLogger The logger instance.
1197	* @param pchBuf The output buffer.
1198	* @param cchBuf The size of the buffer.
1199	* @param pvUser User argument (ignored).
1200	*/
1201	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1202	{
1203	NOREF(pvUser);
1204	#ifdef LOG_ENABLED
1205	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1206	if ( !VALID_PTR(pR0Logger)
1207	\|\| !VALID_PTR(pR0Logger + 1)
1208	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1209	\|\| cchBuf < 2)
1210	return 0;
1211
1212	static const char s_szHex[17] = "0123456789abcdef";
1213	VMCPUID const idCpu = pR0Logger->idCpu;
1214	pchBuf[1] = s_szHex[ idCpu & 15];
1215	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1216
1217	return 2;
1218	#else
1219	return 0;
1220	#endif
1221	}
1222
1223
1224	#ifdef LOG_ENABLED
1225	/**
1226	* Disables flushing of the ring-0 debug log.
1227	*
1228	* @param pVCpu The shared virtual cpu structure.
1229	*/
1230	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1231	{
1232	PVM pVM = pVCpu->pVMR0;
1233	if (pVCpu->vmm.s.pR0LoggerR0)
1234	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1235	}
1236
1237
1238	/**
1239	* Enables flushing of the ring-0 debug log.
1240	*
1241	* @param pVCpu The shared virtual cpu structure.
1242	*/
1243	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1244	{
1245	PVM pVM = pVCpu->pVMR0;
1246	if (pVCpu->vmm.s.pR0LoggerR0)
1247	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1248	}
1249	#endif
1250
1251	/**
1252	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1253	*
1254	* @returns true if the breakpoint should be hit, false if it should be ignored.
1255	*/
1256	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1257	{
1258	#if 0
1259	return true;
1260	#else
1261	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1262	if (pVM)
1263	{
1264	PVMCPU pVCpu = VMMGetCpu(pVM);
1265
1266	#ifdef RT_ARCH_X86
1267	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1268	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1269	#else
1270	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1271	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1272	#endif
1273	{
1274	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1275	return RT_FAILURE_NP(rc);
1276	}
1277	}
1278	#ifdef RT_OS_LINUX
1279	return true;
1280	#else
1281	return false;
1282	#endif
1283	#endif
1284	}
1285
1286
1287	/**
1288	* Override this so we can push it up to ring-3.
1289	*
1290	* @param pszExpr Expression. Can be NULL.
1291	* @param uLine Location line number.
1292	* @param pszFile Location file name.
1293	* @param pszFunction Location function name.
1294	*/
1295	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1296	{
1297	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1298	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1299	"Expression: %s\n"
1300	"Location : %s(%d) %s\n",
1301	pszExpr, pszFile, uLine, pszFunction);
1302	#endif
1303	LogAlways(("\n!!R0-Assertion Failed!!\n"
1304	"Expression: %s\n"
1305	"Location : %s(%d) %s\n",
1306	pszExpr, pszFile, uLine, pszFunction));
1307
1308	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1309	if (pVM)
1310	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1311	"\n!!R0-Assertion Failed!!\n"
1312	"Expression: %s\n"
1313	"Location : %s(%d) %s\n",
1314	pszExpr, pszFile, uLine, pszFunction);
1315	#ifdef RT_OS_DARWIN
1316	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1317	#endif
1318	}
1319
1320
1321	/**
1322	* Callback for RTLogFormatV which writes to the ring-3 log port.
1323	* See PFNLOGOUTPUT() for details.
1324	*/
1325	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1326	{
1327	for (size_t i = 0; i < cbChars; i++)
1328	{
1329	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1330	SUPR0Printf("%c", pachChars[i]);
1331	#endif
1332	LogAlways(("%c", pachChars[i]));
1333	}
1334
1335	return cbChars;
1336	}
1337
1338
1339	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1340	{
1341	va_list va;
1342
1343	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1344	if (pLog)
1345	{
1346	va_start(va, pszFormat);
1347	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1348	va_end(va);
1349
1350	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1351	if (pVM)
1352	{
1353	va_start(va, pszFormat);
1354	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1355	va_end(va);
1356	}
1357	}
1358
1359	#ifdef RT_OS_DARWIN
1360	va_start(va, pszFormat);
1361	RTAssertMsg2V(pszFormat, va);
1362	va_end(va);
1363	#endif
1364	}
1365

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 20981

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