VMMR0.cpp@ 25062

Last change on this file since 25062 was 23468, checked in by vboxsync, 15 years ago
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1	/* $Id: VMMR0.cpp 23468 2009-10-01 11:19:07Z 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_STALE_SELECTOR:
342	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
343	break;
344	case VINF_EM_RAW_IRET_TRAP:
345	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
346	break;
347	case VINF_IOM_HC_IOPORT_READ:
348	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
349	break;
350	case VINF_IOM_HC_IOPORT_WRITE:
351	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
352	break;
353	case VINF_IOM_HC_MMIO_READ:
354	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
355	break;
356	case VINF_IOM_HC_MMIO_WRITE:
357	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
358	break;
359	case VINF_IOM_HC_MMIO_READ_WRITE:
360	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
361	break;
362	case VINF_PATM_HC_MMIO_PATCH_READ:
363	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
364	break;
365	case VINF_PATM_HC_MMIO_PATCH_WRITE:
366	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
367	break;
368	case VINF_EM_RAW_EMULATE_INSTR:
369	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
370	break;
371	case VINF_EM_RAW_EMULATE_IO_BLOCK:
372	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
373	break;
374	case VINF_PATCH_EMULATE_INSTR:
375	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
376	break;
377	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
378	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
379	break;
380	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
381	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
382	break;
383	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
384	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
385	break;
386	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
387	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
388	break;
389	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
390	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
391	break;
392	case VINF_CSAM_PENDING_ACTION:
393	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
394	break;
395	case VINF_PGM_SYNC_CR3:
396	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
397	break;
398	case VINF_PATM_PATCH_INT3:
399	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
400	break;
401	case VINF_PATM_PATCH_TRAP_PF:
402	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
403	break;
404	case VINF_PATM_PATCH_TRAP_GP:
405	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
406	break;
407	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
408	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
409	break;
410	case VINF_EM_RESCHEDULE_REM:
411	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
412	break;
413	case VINF_EM_RAW_TO_R3:
414	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
415	break;
416	case VINF_EM_RAW_TIMER_PENDING:
417	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
418	break;
419	case VINF_EM_RAW_INTERRUPT_PENDING:
420	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
421	break;
422	case VINF_VMM_CALL_HOST:
423	switch (pVCpu->vmm.s.enmCallRing3Operation)
424	{
425	case VMMCALLRING3_PDM_LOCK:
426	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
427	break;
428	case VMMCALLRING3_PDM_QUEUE_FLUSH:
429	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
430	break;
431	case VMMCALLRING3_PGM_POOL_GROW:
432	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
433	break;
434	case VMMCALLRING3_PGM_LOCK:
435	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
436	break;
437	case VMMCALLRING3_PGM_MAP_CHUNK:
438	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
439	break;
440	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
441	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
442	break;
443	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
444	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
445	break;
446	case VMMCALLRING3_VMM_LOGGER_FLUSH:
447	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
448	break;
449	case VMMCALLRING3_VM_SET_ERROR:
450	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
451	break;
452	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
453	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
454	break;
455	case VMMCALLRING3_VM_R0_ASSERTION:
456	default:
457	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
458	break;
459	}
460	break;
461	case VINF_PATM_DUPLICATE_FUNCTION:
462	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
463	break;
464	case VINF_PGM_CHANGE_MODE:
465	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
466	break;
467	case VINF_EM_PENDING_REQUEST:
468	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
469	break;
470	case VINF_EM_HWACCM_PATCH_TPR_INSTR:
471	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
472	break;
473	default:
474	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
475	break;
476	}
477	}
478	#endif /* VBOX_WITH_STATISTICS */
479
480
481	/**
482	* Unused ring-0 entry point that used to be called from the interrupt gate.
483	*
484	* Will be removed one of the next times we do a major SUPDrv version bump.
485	*
486	* @returns VBox status code.
487	* @param pVM The VM to operate on.
488	* @param enmOperation Which operation to execute.
489	* @param pvArg Argument to the operation.
490	* @remarks Assume called with interrupts disabled.
491	*/
492	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
493	{
494	/*
495	* We're returning VERR_NOT_SUPPORT here so we've got something else
496	* than -1 which the interrupt gate glue code might return.
497	*/
498	Log(("operation %#x is not supported\n", enmOperation));
499	return VERR_NOT_SUPPORTED;
500	}
501
502
503	/**
504	* The Ring 0 entry point, called by the fast-ioctl path.
505	*
506	* @param pVM The VM to operate on.
507	* The return code is stored in pVM->vmm.s.iLastGZRc.
508	* @param idCpu The Virtual CPU ID of the calling EMT.
509	* @param enmOperation Which operation to execute.
510	* @remarks Assume called with interrupts _enabled_.
511	*/
512	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
513	{
514	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
515	return;
516	PVMCPU pVCpu = &pVM->aCpus[idCpu];
517
518	switch (enmOperation)
519	{
520	/*
521	* Switch to GC and run guest raw mode code.
522	* Disable interrupts before doing the world switch.
523	*/
524	case VMMR0_DO_RAW_RUN:
525	{
526	/* Safety precaution as hwaccm disables the switcher. */
527	if (RT_LIKELY(!pVM->vmm.s.fSwitcherDisabled))
528	{
529	RTCCUINTREG uFlags = ASMIntDisableFlags();
530	int rc;
531	bool fVTxDisabled;
532
533	if (RT_UNLIKELY(pVM->cCpus > 1))
534	{
535	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
536	return;
537	}
538
539	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
540	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
541	{
542	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
543	return;
544	}
545	#endif
546
547	/* We might need to disable VT-x if the active switcher turns off paging. */
548	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
549	if (RT_FAILURE(rc))
550	{
551	pVCpu->vmm.s.iLastGZRc = rc;
552	return;
553	}
554
555	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
556	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
557
558	TMNotifyStartOfExecution(pVCpu);
559	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
560	pVCpu->vmm.s.iLastGZRc = rc;
561	TMNotifyEndOfExecution(pVCpu);
562
563	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
564	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
565
566	/* Re-enable VT-x if previously turned off. */
567	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
568
569	if ( rc == VINF_EM_RAW_INTERRUPT
570	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
571	TRPMR0DispatchHostInterrupt(pVM);
572
573	ASMSetFlags(uFlags);
574
575	#ifdef VBOX_WITH_STATISTICS
576	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
577	vmmR0RecordRC(pVM, pVCpu, rc);
578	#endif
579	}
580	else
581	{
582	Assert(!pVM->vmm.s.fSwitcherDisabled);
583	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
584	}
585	break;
586	}
587
588	/*
589	* Run guest code using the available hardware acceleration technology.
590	*
591	* Disable interrupts before we do anything interesting. On Windows we avoid
592	* this by having the support driver raise the IRQL before calling us, this way
593	* we hope to get away with page faults and later calling into the kernel.
594	*/
595	case VMMR0_DO_HWACC_RUN:
596	{
597	int rc;
598
599	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
600
601	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
602	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
603	RTThreadPreemptDisable(&PreemptState);
604	#elif !defined(RT_OS_WINDOWS)
605	RTCCUINTREG uFlags = ASMIntDisableFlags();
606	#endif
607	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
608
609	#ifdef LOG_ENABLED
610	if (pVCpu->idCpu > 0)
611	{
612	/* Lazy registration of ring 0 loggers. */
613	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
614	if ( pR0Logger
615	&& !pR0Logger->fRegistered)
616	{
617	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
618	pR0Logger->fRegistered = true;
619	}
620	}
621	#endif
622	if (!HWACCMR0SuspendPending())
623	{
624	rc = HWACCMR0Enter(pVM, pVCpu);
625	if (RT_SUCCESS(rc))
626	{
627	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
628	int rc2 = HWACCMR0Leave(pVM, pVCpu);
629	AssertRC(rc2);
630	}
631	}
632	else
633	{
634	/* System is about to go into suspend mode; go back to ring 3. */
635	rc = VINF_EM_RAW_INTERRUPT;
636	}
637	pVCpu->vmm.s.iLastGZRc = rc;
638
639	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
640	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
641	RTThreadPreemptRestore(&PreemptState);
642	#elif !defined(RT_OS_WINDOWS)
643	ASMSetFlags(uFlags);
644	#endif
645
646	#ifdef VBOX_WITH_STATISTICS
647	vmmR0RecordRC(pVM, pVCpu, rc);
648	#endif
649	/* No special action required for external interrupts, just return. */
650	break;
651	}
652
653	/*
654	* For profiling.
655	*/
656	case VMMR0_DO_NOP:
657	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
658	break;
659
660	/*
661	* Impossible.
662	*/
663	default:
664	AssertMsgFailed(("%#x\n", enmOperation));
665	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
666	break;
667	}
668	}
669
670
671	/**
672	* Validates a session or VM session argument.
673	*
674	* @returns true / false accordingly.
675	* @param pVM The VM argument.
676	* @param pSession The session argument.
677	*/
678	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
679	{
680	/* This must be set! */
681	if (!pSession)
682	return false;
683
684	/* Only one out of the two. */
685	if (pVM && pClaimedSession)
686	return false;
687	if (pVM)
688	pClaimedSession = pVM->pSession;
689	return pClaimedSession == pSession;
690	}
691
692
693	/**
694	* VMMR0EntryEx worker function, either called directly or when ever possible
695	* called thru a longjmp so we can exit safely on failure.
696	*
697	* @returns VBox status code.
698	* @param pVM The VM to operate on.
699	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
700	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
701	* @param enmOperation Which operation to execute.
702	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
703	* The support driver validates this if it's present.
704	* @param u64Arg Some simple constant argument.
705	* @param pSession The session of the caller.
706	* @remarks Assume called with interrupts _enabled_.
707	*/
708	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
709	{
710	/*
711	* Common VM pointer validation.
712	*/
713	if (pVM)
714	{
715	if (RT_UNLIKELY( !VALID_PTR(pVM)
716	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
717	{
718	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
719	return VERR_INVALID_POINTER;
720	}
721	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
722	\|\| pVM->enmVMState > VMSTATE_TERMINATED
723	\|\| pVM->pVMR0 != pVM))
724	{
725	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
726	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
727	return VERR_INVALID_POINTER;
728	}
729
730	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
731	{
732	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
733	return VERR_INVALID_PARAMETER;
734	}
735	}
736	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
737	{
738	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
739	return VERR_INVALID_PARAMETER;
740	}
741
742
743	switch (enmOperation)
744	{
745	/*
746	* GVM requests
747	*/
748	case VMMR0_DO_GVMM_CREATE_VM:
749	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
750	return VERR_INVALID_PARAMETER;
751	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
752
753	case VMMR0_DO_GVMM_DESTROY_VM:
754	if (pReqHdr \|\| u64Arg)
755	return VERR_INVALID_PARAMETER;
756	return GVMMR0DestroyVM(pVM);
757
758	case VMMR0_DO_GVMM_REGISTER_VMCPU:
759	{
760	if (!pVM)
761	return VERR_INVALID_PARAMETER;
762	return GVMMR0RegisterVCpu(pVM, idCpu);
763	}
764
765	case VMMR0_DO_GVMM_SCHED_HALT:
766	if (pReqHdr)
767	return VERR_INVALID_PARAMETER;
768	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
769
770	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
771	if (pReqHdr \|\| u64Arg)
772	return VERR_INVALID_PARAMETER;
773	return GVMMR0SchedWakeUp(pVM, idCpu);
774
775	case VMMR0_DO_GVMM_SCHED_POKE:
776	if (pReqHdr \|\| u64Arg)
777	return VERR_INVALID_PARAMETER;
778	return GVMMR0SchedPoke(pVM, idCpu);
779
780	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
781	if (u64Arg)
782	return VERR_INVALID_PARAMETER;
783	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
784
785	case VMMR0_DO_GVMM_SCHED_POLL:
786	if (pReqHdr \|\| u64Arg > 1)
787	return VERR_INVALID_PARAMETER;
788	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
789
790	case VMMR0_DO_GVMM_QUERY_STATISTICS:
791	if (u64Arg)
792	return VERR_INVALID_PARAMETER;
793	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
794
795	case VMMR0_DO_GVMM_RESET_STATISTICS:
796	if (u64Arg)
797	return VERR_INVALID_PARAMETER;
798	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
799
800	/*
801	* Initialize the R0 part of a VM instance.
802	*/
803	case VMMR0_DO_VMMR0_INIT:
804	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
805
806	/*
807	* Terminate the R0 part of a VM instance.
808	*/
809	case VMMR0_DO_VMMR0_TERM:
810	return VMMR0TermVM(pVM, NULL);
811
812	/*
813	* Attempt to enable hwacc mode and check the current setting.
814	*
815	*/
816	case VMMR0_DO_HWACC_ENABLE:
817	return HWACCMR0EnableAllCpus(pVM);
818
819	/*
820	* Setup the hardware accelerated session.
821	*/
822	case VMMR0_DO_HWACC_SETUP_VM:
823	{
824	RTCCUINTREG fFlags = ASMIntDisableFlags();
825	int rc = HWACCMR0SetupVM(pVM);
826	ASMSetFlags(fFlags);
827	return rc;
828	}
829
830	/*
831	* Switch to RC to execute Hypervisor function.
832	*/
833	case VMMR0_DO_CALL_HYPERVISOR:
834	{
835	int rc;
836	bool fVTxDisabled;
837
838	/* Safety precaution as HWACCM can disable the switcher. */
839	Assert(!pVM->vmm.s.fSwitcherDisabled);
840	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
841	return VERR_NOT_SUPPORTED;
842
843	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
844	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
845	return VERR_PGM_NO_CR3_SHADOW_ROOT;
846	#endif
847
848	RTCCUINTREG fFlags = ASMIntDisableFlags();
849
850	/* We might need to disable VT-x if the active switcher turns off paging. */
851	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
852	if (RT_FAILURE(rc))
853	return rc;
854
855	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
856
857	/* Re-enable VT-x if previously turned off. */
858	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
859
860	/** @todo dispatch interrupts? */
861	ASMSetFlags(fFlags);
862	return rc;
863	}
864
865	/*
866	* PGM wrappers.
867	*/
868	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
869	if (idCpu == NIL_VMCPUID)
870	return VERR_INVALID_CPU_ID;
871	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
872
873	/*
874	* GMM wrappers.
875	*/
876	case VMMR0_DO_GMM_INITIAL_RESERVATION:
877	if (u64Arg)
878	return VERR_INVALID_PARAMETER;
879	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
880
881	case VMMR0_DO_GMM_UPDATE_RESERVATION:
882	if (u64Arg)
883	return VERR_INVALID_PARAMETER;
884	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
885
886	case VMMR0_DO_GMM_ALLOCATE_PAGES:
887	if (u64Arg)
888	return VERR_INVALID_PARAMETER;
889	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
890
891	case VMMR0_DO_GMM_FREE_PAGES:
892	if (u64Arg)
893	return VERR_INVALID_PARAMETER;
894	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
895
896	case VMMR0_DO_GMM_BALLOONED_PAGES:
897	if (u64Arg)
898	return VERR_INVALID_PARAMETER;
899	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
900
901	case VMMR0_DO_GMM_DEFLATED_BALLOON:
902	if (pReqHdr)
903	return VERR_INVALID_PARAMETER;
904	return GMMR0DeflatedBalloon(pVM, idCpu, (uint32_t)u64Arg);
905
906	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
907	if (u64Arg)
908	return VERR_INVALID_PARAMETER;
909	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
910
911	case VMMR0_DO_GMM_SEED_CHUNK:
912	if (pReqHdr)
913	return VERR_INVALID_PARAMETER;
914	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
915
916	/*
917	* A quick GCFGM mock-up.
918	*/
919	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
920	case VMMR0_DO_GCFGM_SET_VALUE:
921	case VMMR0_DO_GCFGM_QUERY_VALUE:
922	{
923	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
924	return VERR_INVALID_PARAMETER;
925	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
926	if (pReq->Hdr.cbReq != sizeof(*pReq))
927	return VERR_INVALID_PARAMETER;
928	int rc;
929	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
930	{
931	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
932	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
933	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
934	}
935	else
936	{
937	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
938	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
939	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
940	}
941	return rc;
942	}
943
944
945	/*
946	* Requests to the internal networking service.
947	*/
948	case VMMR0_DO_INTNET_OPEN:
949	{
950	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
951	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
952	return VERR_INVALID_PARAMETER;
953	if (!g_pIntNet)
954	return VERR_NOT_SUPPORTED;
955	return INTNETR0OpenReq(g_pIntNet, pSession, pReq);
956	}
957
958	case VMMR0_DO_INTNET_IF_CLOSE:
959	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
960	return VERR_INVALID_PARAMETER;
961	if (!g_pIntNet)
962	return VERR_NOT_SUPPORTED;
963	return INTNETR0IfCloseReq(g_pIntNet, pSession, (PINTNETIFCLOSEREQ)pReqHdr);
964
965	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
966	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETRING3BUFFERREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
967	return VERR_INVALID_PARAMETER;
968	if (!g_pIntNet)
969	return VERR_NOT_SUPPORTED;
970	return INTNETR0IfGetRing3BufferReq(g_pIntNet, pSession, (PINTNETIFGETRING3BUFFERREQ)pReqHdr);
971
972	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
973	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
974	return VERR_INVALID_PARAMETER;
975	if (!g_pIntNet)
976	return VERR_NOT_SUPPORTED;
977	return INTNETR0IfSetPromiscuousModeReq(g_pIntNet, pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
978
979	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
980	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
981	return VERR_INVALID_PARAMETER;
982	if (!g_pIntNet)
983	return VERR_NOT_SUPPORTED;
984	return INTNETR0IfSetMacAddressReq(g_pIntNet, pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
985
986	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
987	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
988	return VERR_INVALID_PARAMETER;
989	if (!g_pIntNet)
990	return VERR_NOT_SUPPORTED;
991	return INTNETR0IfSetActiveReq(g_pIntNet, pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
992
993	case VMMR0_DO_INTNET_IF_SEND:
994	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
995	return VERR_INVALID_PARAMETER;
996	if (!g_pIntNet)
997	return VERR_NOT_SUPPORTED;
998	return INTNETR0IfSendReq(g_pIntNet, pSession, (PINTNETIFSENDREQ)pReqHdr);
999
1000	case VMMR0_DO_INTNET_IF_WAIT:
1001	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1002	return VERR_INVALID_PARAMETER;
1003	if (!g_pIntNet)
1004	return VERR_NOT_SUPPORTED;
1005	return INTNETR0IfWaitReq(g_pIntNet, pSession, (PINTNETIFWAITREQ)pReqHdr);
1006
1007	/*
1008	* For profiling.
1009	*/
1010	case VMMR0_DO_NOP:
1011	case VMMR0_DO_SLOW_NOP:
1012	return VINF_SUCCESS;
1013
1014	/*
1015	* For testing Ring-0 APIs invoked in this environment.
1016	*/
1017	case VMMR0_DO_TESTS:
1018	/** @todo make new test */
1019	return VINF_SUCCESS;
1020
1021
1022	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1023	case VMMR0_DO_TEST_SWITCHER3264:
1024	if (idCpu == NIL_VMCPUID)
1025	return VERR_INVALID_CPU_ID;
1026	return HWACCMR0TestSwitcher3264(pVM);
1027	#endif
1028	default:
1029	/*
1030	* We're returning VERR_NOT_SUPPORT here so we've got something else
1031	* than -1 which the interrupt gate glue code might return.
1032	*/
1033	Log(("operation %#x is not supported\n", enmOperation));
1034	return VERR_NOT_SUPPORTED;
1035	}
1036	}
1037
1038
1039	/**
1040	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1041	*/
1042	typedef struct VMMR0ENTRYEXARGS
1043	{
1044	PVM pVM;
1045	VMCPUID idCpu;
1046	VMMR0OPERATION enmOperation;
1047	PSUPVMMR0REQHDR pReq;
1048	uint64_t u64Arg;
1049	PSUPDRVSESSION pSession;
1050	} VMMR0ENTRYEXARGS;
1051	/** Pointer to a vmmR0EntryExWrapper argument package. */
1052	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1053
1054	/**
1055	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1056	*
1057	* @returns VBox status code.
1058	* @param pvArgs The argument package
1059	*/
1060	static int vmmR0EntryExWrapper(void *pvArgs)
1061	{
1062	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1063	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1064	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1065	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1066	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1067	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1068	}
1069
1070
1071	/**
1072	* The Ring 0 entry point, called by the support library (SUP).
1073	*
1074	* @returns VBox status code.
1075	* @param pVM The VM to operate on.
1076	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1077	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1078	* @param enmOperation Which operation to execute.
1079	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1080	* @param u64Arg Some simple constant argument.
1081	* @param pSession The session of the caller.
1082	* @remarks Assume called with interrupts _enabled_.
1083	*/
1084	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1085	{
1086	/*
1087	* Requests that should only happen on the EMT thread will be
1088	* wrapped in a setjmp so we can assert without causing trouble.
1089	*/
1090	if ( VALID_PTR(pVM)
1091	&& pVM->pVMR0
1092	&& idCpu < pVM->cCpus)
1093	{
1094	switch (enmOperation)
1095	{
1096	/* These might/will be called before VMMR3Init. */
1097	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1098	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1099	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1100	case VMMR0_DO_GMM_FREE_PAGES:
1101	case VMMR0_DO_GMM_BALLOONED_PAGES:
1102	case VMMR0_DO_GMM_DEFLATED_BALLOON:
1103	/* On the mac we might not have a valid jmp buf, so check these as well. */
1104	case VMMR0_DO_VMMR0_INIT:
1105	case VMMR0_DO_VMMR0_TERM:
1106	{
1107	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1108
1109	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1110	break;
1111
1112	/** @todo validate this EMT claim... GVM knows. */
1113	VMMR0ENTRYEXARGS Args;
1114	Args.pVM = pVM;
1115	Args.idCpu = idCpu;
1116	Args.enmOperation = enmOperation;
1117	Args.pReq = pReq;
1118	Args.u64Arg = u64Arg;
1119	Args.pSession = pSession;
1120	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1121	}
1122
1123	default:
1124	break;
1125	}
1126	}
1127	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1128	}
1129
1130	/**
1131	* Internal R0 logger worker: Flush logger.
1132	*
1133	* @param pLogger The logger instance to flush.
1134	* @remark This function must be exported!
1135	*/
1136	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1137	{
1138	#ifdef LOG_ENABLED
1139	/*
1140	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1141	* (This is a bit paranoid code.)
1142	*/
1143	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1144	if ( !VALID_PTR(pR0Logger)
1145	\|\| !VALID_PTR(pR0Logger + 1)
1146	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1147	{
1148	# ifdef DEBUG
1149	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1150	# endif
1151	return;
1152	}
1153	if (pR0Logger->fFlushingDisabled)
1154	return; /* quietly */
1155
1156	PVM pVM = pR0Logger->pVM;
1157	if ( !VALID_PTR(pVM)
1158	\|\| pVM->pVMR0 != pVM)
1159	{
1160	# ifdef DEBUG
1161	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1162	# endif
1163	return;
1164	}
1165
1166	PVMCPU pVCpu = VMMGetCpu(pVM);
1167
1168	/*
1169	* Check that the jump buffer is armed.
1170	*/
1171	# ifdef RT_ARCH_X86
1172	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1173	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1174	# else
1175	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1176	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1177	# endif
1178	{
1179	# ifdef DEBUG
1180	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1181	# endif
1182	return;
1183	}
1184	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1185	#endif
1186	}
1187
1188	/**
1189	* Interal R0 logger worker: Custom prefix.
1190	*
1191	* @returns Number of chars written.
1192	*
1193	* @param pLogger The logger instance.
1194	* @param pchBuf The output buffer.
1195	* @param cchBuf The size of the buffer.
1196	* @param pvUser User argument (ignored).
1197	*/
1198	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1199	{
1200	NOREF(pvUser);
1201	#ifdef LOG_ENABLED
1202	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1203	if ( !VALID_PTR(pR0Logger)
1204	\|\| !VALID_PTR(pR0Logger + 1)
1205	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1206	\|\| cchBuf < 2)
1207	return 0;
1208
1209	static const char s_szHex[17] = "0123456789abcdef";
1210	VMCPUID const idCpu = pR0Logger->idCpu;
1211	pchBuf[1] = s_szHex[ idCpu & 15];
1212	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1213
1214	return 2;
1215	#else
1216	return 0;
1217	#endif
1218	}
1219
1220
1221	#ifdef LOG_ENABLED
1222	/**
1223	* Disables flushing of the ring-0 debug log.
1224	*
1225	* @param pVCpu The shared virtual cpu structure.
1226	*/
1227	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1228	{
1229	PVM pVM = pVCpu->pVMR0;
1230	if (pVCpu->vmm.s.pR0LoggerR0)
1231	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1232	}
1233
1234
1235	/**
1236	* Enables flushing of the ring-0 debug log.
1237	*
1238	* @param pVCpu The shared virtual cpu structure.
1239	*/
1240	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1241	{
1242	PVM pVM = pVCpu->pVMR0;
1243	if (pVCpu->vmm.s.pR0LoggerR0)
1244	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1245	}
1246	#endif
1247
1248	/**
1249	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1250	*
1251	* @returns true if the breakpoint should be hit, false if it should be ignored.
1252	*/
1253	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1254	{
1255	#if 0
1256	return true;
1257	#else
1258	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1259	if (pVM)
1260	{
1261	PVMCPU pVCpu = VMMGetCpu(pVM);
1262
1263	#ifdef RT_ARCH_X86
1264	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1265	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1266	#else
1267	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1268	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1269	#endif
1270	{
1271	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1272	return RT_FAILURE_NP(rc);
1273	}
1274	}
1275	#ifdef RT_OS_LINUX
1276	return true;
1277	#else
1278	return false;
1279	#endif
1280	#endif
1281	}
1282
1283
1284	/**
1285	* Override this so we can push it up to ring-3.
1286	*
1287	* @param pszExpr Expression. Can be NULL.
1288	* @param uLine Location line number.
1289	* @param pszFile Location file name.
1290	* @param pszFunction Location function name.
1291	*/
1292	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1293	{
1294	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1295	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1296	"Expression: %s\n"
1297	"Location : %s(%d) %s\n",
1298	pszExpr, pszFile, uLine, pszFunction);
1299	#endif
1300	LogAlways(("\n!!R0-Assertion Failed!!\n"
1301	"Expression: %s\n"
1302	"Location : %s(%d) %s\n",
1303	pszExpr, pszFile, uLine, pszFunction));
1304
1305	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1306	if (pVM)
1307	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1308	"\n!!R0-Assertion Failed!!\n"
1309	"Expression: %s\n"
1310	"Location : %s(%d) %s\n",
1311	pszExpr, pszFile, uLine, pszFunction);
1312	#ifdef RT_OS_DARWIN
1313	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1314	#endif
1315	}
1316
1317
1318	/**
1319	* Callback for RTLogFormatV which writes to the ring-3 log port.
1320	* See PFNLOGOUTPUT() for details.
1321	*/
1322	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1323	{
1324	for (size_t i = 0; i < cbChars; i++)
1325	{
1326	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1327	SUPR0Printf("%c", pachChars[i]);
1328	#endif
1329	LogAlways(("%c", pachChars[i]));
1330	}
1331
1332	return cbChars;
1333	}
1334
1335
1336	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1337	{
1338	va_list va;
1339
1340	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1341	if (pLog)
1342	{
1343	va_start(va, pszFormat);
1344	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1345	va_end(va);
1346
1347	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1348	if (pVM)
1349	{
1350	va_start(va, pszFormat);
1351	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1352	va_end(va);
1353	}
1354	}
1355
1356	#ifdef RT_OS_DARWIN
1357	va_start(va, pszFormat);
1358	RTAssertMsg2V(pszFormat, va);
1359	va_end(va);
1360	#endif
1361	}
1362

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 25062

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