VMMR0.cpp@ 20979

Last change on this file since 20979 was 20979, checked in by vboxsync, 16 years ago
Cpu poke never worked in the VT-x/AMD-V case, because pVCpu->idHostCpu was never set.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 45.3 KB

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1	/* $Id: VMMR0.cpp 20979 2009-06-26 14:56:03Z 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.215389.xyz. 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	#ifdef LOG_ENABLED
611	if (pVCpu->idCpu > 0)
612	{
613	/* Lazy registration of ring 0 loggers. */
614	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
615	if ( pR0Logger
616	&& !pR0Logger->fRegistered)
617	{
618	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
619	pR0Logger->fRegistered = true;
620	}
621	}
622	#endif
623	if (!HWACCMR0SuspendPending())
624	{
625	rc = HWACCMR0Enter(pVM, pVCpu);
626	if (RT_SUCCESS(rc))
627	{
628	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
629	int rc2 = HWACCMR0Leave(pVM, pVCpu);
630	AssertRC(rc2);
631	}
632	}
633	else
634	{
635	/* System is about to go into suspend mode; go back to ring 3. */
636	rc = VINF_EM_RAW_INTERRUPT;
637	}
638	pVCpu->vmm.s.iLastGZRc = rc;
639
640	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
641	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
642	RTThreadPreemptRestore(&PreemptState);
643	#elif !defined(RT_OS_WINDOWS)
644	ASMSetFlags(uFlags);
645	#endif
646
647	#ifdef VBOX_WITH_STATISTICS
648	vmmR0RecordRC(pVM, pVCpu, rc);
649	#endif
650	/* No special action required for external interrupts, just return. */
651	break;
652	}
653
654	/*
655	* For profiling.
656	*/
657	case VMMR0_DO_NOP:
658	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
659	break;
660
661	/*
662	* Impossible.
663	*/
664	default:
665	AssertMsgFailed(("%#x\n", enmOperation));
666	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
667	break;
668	}
669	}
670
671
672	/**
673	* Validates a session or VM session argument.
674	*
675	* @returns true / false accordingly.
676	* @param pVM The VM argument.
677	* @param pSession The session argument.
678	*/
679	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
680	{
681	/* This must be set! */
682	if (!pSession)
683	return false;
684
685	/* Only one out of the two. */
686	if (pVM && pClaimedSession)
687	return false;
688	if (pVM)
689	pClaimedSession = pVM->pSession;
690	return pClaimedSession == pSession;
691	}
692
693
694	/**
695	* VMMR0EntryEx worker function, either called directly or when ever possible
696	* called thru a longjmp so we can exit safely on failure.
697	*
698	* @returns VBox status code.
699	* @param pVM The VM to operate on.
700	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
701	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
702	* @param enmOperation Which operation to execute.
703	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
704	* The support driver validates this if it's present.
705	* @param u64Arg Some simple constant argument.
706	* @param pSession The session of the caller.
707	* @remarks Assume called with interrupts _enabled_.
708	*/
709	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
710	{
711	/*
712	* Common VM pointer validation.
713	*/
714	if (pVM)
715	{
716	if (RT_UNLIKELY( !VALID_PTR(pVM)
717	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
718	{
719	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
720	return VERR_INVALID_POINTER;
721	}
722	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
723	\|\| pVM->enmVMState > VMSTATE_TERMINATED
724	\|\| pVM->pVMR0 != pVM))
725	{
726	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
727	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
728	return VERR_INVALID_POINTER;
729	}
730
731	if (RT_UNLIKELY(idCpu >= pVM->cCPUs && idCpu != NIL_VMCPUID))
732	{
733	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCPUs=%u)\n", idCpu, pVM->cCPUs);
734	return VERR_INVALID_PARAMETER;
735	}
736	}
737	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
738	{
739	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
740	return VERR_INVALID_PARAMETER;
741	}
742
743
744	switch (enmOperation)
745	{
746	/*
747	* GVM requests
748	*/
749	case VMMR0_DO_GVMM_CREATE_VM:
750	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
751	return VERR_INVALID_PARAMETER;
752	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
753
754	case VMMR0_DO_GVMM_DESTROY_VM:
755	if (pReqHdr \|\| u64Arg)
756	return VERR_INVALID_PARAMETER;
757	return GVMMR0DestroyVM(pVM);
758
759	case VMMR0_DO_GVMM_REGISTER_VMCPU:
760	{
761	if (!pVM)
762	return VERR_INVALID_PARAMETER;
763	return GVMMR0RegisterVCpu(pVM, idCpu);
764	}
765
766	case VMMR0_DO_GVMM_SCHED_HALT:
767	if (pReqHdr)
768	return VERR_INVALID_PARAMETER;
769	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
770
771	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
772	if (pReqHdr \|\| u64Arg)
773	return VERR_INVALID_PARAMETER;
774	return GVMMR0SchedWakeUp(pVM, idCpu);
775
776	case VMMR0_DO_GVMM_SCHED_POKE:
777	if (pReqHdr \|\| u64Arg)
778	return VERR_INVALID_PARAMETER;
779	return GVMMR0SchedPoke(pVM, idCpu);
780
781	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
782	if (u64Arg)
783	return VERR_INVALID_PARAMETER;
784	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
785
786	case VMMR0_DO_GVMM_SCHED_POLL:
787	if (pReqHdr \|\| u64Arg > 1)
788	return VERR_INVALID_PARAMETER;
789	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
790
791	case VMMR0_DO_GVMM_QUERY_STATISTICS:
792	if (u64Arg)
793	return VERR_INVALID_PARAMETER;
794	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
795
796	case VMMR0_DO_GVMM_RESET_STATISTICS:
797	if (u64Arg)
798	return VERR_INVALID_PARAMETER;
799	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
800
801	/*
802	* Initialize the R0 part of a VM instance.
803	*/
804	case VMMR0_DO_VMMR0_INIT:
805	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
806
807	/*
808	* Terminate the R0 part of a VM instance.
809	*/
810	case VMMR0_DO_VMMR0_TERM:
811	return VMMR0TermVM(pVM, NULL);
812
813	/*
814	* Attempt to enable hwacc mode and check the current setting.
815	*
816	*/
817	case VMMR0_DO_HWACC_ENABLE:
818	return HWACCMR0EnableAllCpus(pVM);
819
820	/*
821	* Setup the hardware accelerated raw-mode session.
822	*/
823	case VMMR0_DO_HWACC_SETUP_VM:
824	{
825	RTCCUINTREG fFlags = ASMIntDisableFlags();
826	int rc = HWACCMR0SetupVM(pVM);
827	ASMSetFlags(fFlags);
828	return rc;
829	}
830
831	/*
832	* Switch to RC to execute Hypervisor function.
833	*/
834	case VMMR0_DO_CALL_HYPERVISOR:
835	{
836	int rc;
837	bool fVTxDisabled;
838
839	/* Safety precaution as HWACCM can disable the switcher. */
840	Assert(!pVM->vmm.s.fSwitcherDisabled);
841	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
842	return VERR_NOT_SUPPORTED;
843
844	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
845	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
846	return VERR_PGM_NO_CR3_SHADOW_ROOT;
847	#endif
848
849	RTCCUINTREG fFlags = ASMIntDisableFlags();
850
851	/* We might need to disable VT-x if the active switcher turns off paging. */
852	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
853	if (RT_FAILURE(rc))
854	return rc;
855
856	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
857
858	/* Re-enable VT-x if previously turned off. */
859	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
860
861	/** @todo dispatch interrupts? */
862	ASMSetFlags(fFlags);
863	return rc;
864	}
865
866	/*
867	* PGM wrappers.
868	*/
869	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
870	if (idCpu == NIL_VMCPUID)
871	return VERR_INVALID_CPU_ID;
872	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
873
874	/*
875	* GMM wrappers.
876	*/
877	case VMMR0_DO_GMM_INITIAL_RESERVATION:
878	if (u64Arg)
879	return VERR_INVALID_PARAMETER;
880	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
881
882	case VMMR0_DO_GMM_UPDATE_RESERVATION:
883	if (u64Arg)
884	return VERR_INVALID_PARAMETER;
885	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
886
887	case VMMR0_DO_GMM_ALLOCATE_PAGES:
888	if (u64Arg)
889	return VERR_INVALID_PARAMETER;
890	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
891
892	case VMMR0_DO_GMM_FREE_PAGES:
893	if (u64Arg)
894	return VERR_INVALID_PARAMETER;
895	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
896
897	case VMMR0_DO_GMM_BALLOONED_PAGES:
898	if (u64Arg)
899	return VERR_INVALID_PARAMETER;
900	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
901
902	case VMMR0_DO_GMM_DEFLATED_BALLOON:
903	if (pReqHdr)
904	return VERR_INVALID_PARAMETER;
905	return GMMR0DeflatedBalloon(pVM, idCpu, (uint32_t)u64Arg);
906
907	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
908	if (u64Arg)
909	return VERR_INVALID_PARAMETER;
910	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
911
912	case VMMR0_DO_GMM_SEED_CHUNK:
913	if (pReqHdr)
914	return VERR_INVALID_PARAMETER;
915	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
916
917	/*
918	* A quick GCFGM mock-up.
919	*/
920	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
921	case VMMR0_DO_GCFGM_SET_VALUE:
922	case VMMR0_DO_GCFGM_QUERY_VALUE:
923	{
924	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
925	return VERR_INVALID_PARAMETER;
926	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
927	if (pReq->Hdr.cbReq != sizeof(*pReq))
928	return VERR_INVALID_PARAMETER;
929	int rc;
930	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
931	{
932	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
933	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
934	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
935	}
936	else
937	{
938	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
939	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
940	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
941	}
942	return rc;
943	}
944
945
946	/*
947	* Requests to the internal networking service.
948	*/
949	case VMMR0_DO_INTNET_OPEN:
950	{
951	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
952	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
953	return VERR_INVALID_PARAMETER;
954	if (!g_pIntNet)
955	return VERR_NOT_SUPPORTED;
956	return INTNETR0OpenReq(g_pIntNet, pSession, pReq);
957	}
958
959	case VMMR0_DO_INTNET_IF_CLOSE:
960	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
961	return VERR_INVALID_PARAMETER;
962	if (!g_pIntNet)
963	return VERR_NOT_SUPPORTED;
964	return INTNETR0IfCloseReq(g_pIntNet, pSession, (PINTNETIFCLOSEREQ)pReqHdr);
965
966	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
967	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETRING3BUFFERREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
968	return VERR_INVALID_PARAMETER;
969	if (!g_pIntNet)
970	return VERR_NOT_SUPPORTED;
971	return INTNETR0IfGetRing3BufferReq(g_pIntNet, pSession, (PINTNETIFGETRING3BUFFERREQ)pReqHdr);
972
973	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
974	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
975	return VERR_INVALID_PARAMETER;
976	if (!g_pIntNet)
977	return VERR_NOT_SUPPORTED;
978	return INTNETR0IfSetPromiscuousModeReq(g_pIntNet, pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
979
980	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
981	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
982	return VERR_INVALID_PARAMETER;
983	if (!g_pIntNet)
984	return VERR_NOT_SUPPORTED;
985	return INTNETR0IfSetMacAddressReq(g_pIntNet, pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
986
987	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
988	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
989	return VERR_INVALID_PARAMETER;
990	if (!g_pIntNet)
991	return VERR_NOT_SUPPORTED;
992	return INTNETR0IfSetActiveReq(g_pIntNet, pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
993
994	case VMMR0_DO_INTNET_IF_SEND:
995	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
996	return VERR_INVALID_PARAMETER;
997	if (!g_pIntNet)
998	return VERR_NOT_SUPPORTED;
999	return INTNETR0IfSendReq(g_pIntNet, pSession, (PINTNETIFSENDREQ)pReqHdr);
1000
1001	case VMMR0_DO_INTNET_IF_WAIT:
1002	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1003	return VERR_INVALID_PARAMETER;
1004	if (!g_pIntNet)
1005	return VERR_NOT_SUPPORTED;
1006	return INTNETR0IfWaitReq(g_pIntNet, pSession, (PINTNETIFWAITREQ)pReqHdr);
1007
1008	/*
1009	* For profiling.
1010	*/
1011	case VMMR0_DO_NOP:
1012	case VMMR0_DO_SLOW_NOP:
1013	return VINF_SUCCESS;
1014
1015	/*
1016	* For testing Ring-0 APIs invoked in this environment.
1017	*/
1018	case VMMR0_DO_TESTS:
1019	/** @todo make new test */
1020	return VINF_SUCCESS;
1021
1022
1023	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1024	case VMMR0_DO_TEST_SWITCHER3264:
1025	if (idCpu == NIL_VMCPUID)
1026	return VERR_INVALID_CPU_ID;
1027	return HWACCMR0TestSwitcher3264(pVM);
1028	#endif
1029	default:
1030	/*
1031	* We're returning VERR_NOT_SUPPORT here so we've got something else
1032	* than -1 which the interrupt gate glue code might return.
1033	*/
1034	Log(("operation %#x is not supported\n", enmOperation));
1035	return VERR_NOT_SUPPORTED;
1036	}
1037	}
1038
1039
1040	/**
1041	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1042	*/
1043	typedef struct VMMR0ENTRYEXARGS
1044	{
1045	PVM pVM;
1046	VMCPUID idCpu;
1047	VMMR0OPERATION enmOperation;
1048	PSUPVMMR0REQHDR pReq;
1049	uint64_t u64Arg;
1050	PSUPDRVSESSION pSession;
1051	} VMMR0ENTRYEXARGS;
1052	/** Pointer to a vmmR0EntryExWrapper argument package. */
1053	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1054
1055	/**
1056	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1057	*
1058	* @returns VBox status code.
1059	* @param pvArgs The argument package
1060	*/
1061	static int vmmR0EntryExWrapper(void *pvArgs)
1062	{
1063	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1064	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1065	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1066	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1067	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1068	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1069	}
1070
1071
1072	/**
1073	* The Ring 0 entry point, called by the support library (SUP).
1074	*
1075	* @returns VBox status code.
1076	* @param pVM The VM to operate on.
1077	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1078	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1079	* @param enmOperation Which operation to execute.
1080	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1081	* @param u64Arg Some simple constant argument.
1082	* @param pSession The session of the caller.
1083	* @remarks Assume called with interrupts _enabled_.
1084	*/
1085	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1086	{
1087	/*
1088	* Requests that should only happen on the EMT thread will be
1089	* wrapped in a setjmp so we can assert without causing trouble.
1090	*/
1091	if ( VALID_PTR(pVM)
1092	&& pVM->pVMR0
1093	&& idCpu < pVM->cCPUs)
1094	{
1095	switch (enmOperation)
1096	{
1097	/* These might/will be called before VMMR3Init. */
1098	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1099	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1100	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1101	case VMMR0_DO_GMM_FREE_PAGES:
1102	case VMMR0_DO_GMM_BALLOONED_PAGES:
1103	case VMMR0_DO_GMM_DEFLATED_BALLOON:
1104	/* On the mac we might not have a valid jmp buf, so check these as well. */
1105	case VMMR0_DO_VMMR0_INIT:
1106	case VMMR0_DO_VMMR0_TERM:
1107	{
1108	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1109
1110	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1111	break;
1112
1113	/** @todo validate this EMT claim... GVM knows. */
1114	VMMR0ENTRYEXARGS Args;
1115	Args.pVM = pVM;
1116	Args.idCpu = idCpu;
1117	Args.enmOperation = enmOperation;
1118	Args.pReq = pReq;
1119	Args.u64Arg = u64Arg;
1120	Args.pSession = pSession;
1121	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1122	}
1123
1124	default:
1125	break;
1126	}
1127	}
1128	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1129	}
1130
1131	/**
1132	* Internal R0 logger worker: Flush logger.
1133	*
1134	* @param pLogger The logger instance to flush.
1135	* @remark This function must be exported!
1136	*/
1137	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1138	{
1139	#ifdef LOG_ENABLED
1140	/*
1141	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1142	* (This is a bit paranoid code.)
1143	*/
1144	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1145	if ( !VALID_PTR(pR0Logger)
1146	\|\| !VALID_PTR(pR0Logger + 1)
1147	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1148	{
1149	# ifdef DEBUG
1150	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1151	# endif
1152	return;
1153	}
1154	if (pR0Logger->fFlushingDisabled)
1155	return; /* quietly */
1156
1157	PVM pVM = pR0Logger->pVM;
1158	if ( !VALID_PTR(pVM)
1159	\|\| pVM->pVMR0 != pVM)
1160	{
1161	# ifdef DEBUG
1162	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1163	# endif
1164	return;
1165	}
1166
1167	PVMCPU pVCpu = VMMGetCpu(pVM);
1168
1169	/*
1170	* Check that the jump buffer is armed.
1171	*/
1172	# ifdef RT_ARCH_X86
1173	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1174	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1175	# else
1176	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1177	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1178	# endif
1179	{
1180	# ifdef DEBUG
1181	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1182	# endif
1183	return;
1184	}
1185	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1186	#endif
1187	}
1188
1189	/**
1190	* Interal R0 logger worker: Custom prefix.
1191	*
1192	* @returns Number of chars written.
1193	*
1194	* @param pLogger The logger instance.
1195	* @param pchBuf The output buffer.
1196	* @param cchBuf The size of the buffer.
1197	* @param pvUser User argument (ignored).
1198	*/
1199	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1200	{
1201	NOREF(pvUser);
1202	#ifdef LOG_ENABLED
1203	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1204	if ( !VALID_PTR(pR0Logger)
1205	\|\| !VALID_PTR(pR0Logger + 1)
1206	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1207	\|\| cchBuf < 2)
1208	return 0;
1209
1210	static const char s_szHex[17] = "0123456789abcdef";
1211	VMCPUID const idCpu = pR0Logger->idCpu;
1212	pchBuf[1] = s_szHex[ idCpu & 15];
1213	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1214
1215	return 2;
1216	#else
1217	return 0;
1218	#endif
1219	}
1220
1221
1222	#ifdef LOG_ENABLED
1223	/**
1224	* Disables flushing of the ring-0 debug log.
1225	*
1226	* @param pVCpu The shared virtual cpu structure.
1227	*/
1228	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1229	{
1230	PVM pVM = pVCpu->pVMR0;
1231	if (pVCpu->vmm.s.pR0LoggerR0)
1232	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1233	}
1234
1235
1236	/**
1237	* Enables flushing of the ring-0 debug log.
1238	*
1239	* @param pVCpu The shared virtual cpu structure.
1240	*/
1241	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1242	{
1243	PVM pVM = pVCpu->pVMR0;
1244	if (pVCpu->vmm.s.pR0LoggerR0)
1245	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1246	}
1247	#endif
1248
1249	/**
1250	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1251	*
1252	* @returns true if the breakpoint should be hit, false if it should be ignored.
1253	*/
1254	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1255	{
1256	#if 0
1257	return true;
1258	#else
1259	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1260	if (pVM)
1261	{
1262	PVMCPU pVCpu = VMMGetCpu(pVM);
1263
1264	#ifdef RT_ARCH_X86
1265	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1266	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1267	#else
1268	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1269	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1270	#endif
1271	{
1272	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1273	return RT_FAILURE_NP(rc);
1274	}
1275	}
1276	#ifdef RT_OS_LINUX
1277	return true;
1278	#else
1279	return false;
1280	#endif
1281	#endif
1282	}
1283
1284
1285	/**
1286	* Override this so we can push it up to ring-3.
1287	*
1288	* @param pszExpr Expression. Can be NULL.
1289	* @param uLine Location line number.
1290	* @param pszFile Location file name.
1291	* @param pszFunction Location function name.
1292	*/
1293	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1294	{
1295	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1296	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1297	"Expression: %s\n"
1298	"Location : %s(%d) %s\n",
1299	pszExpr, pszFile, uLine, pszFunction);
1300	#endif
1301	LogAlways(("\n!!R0-Assertion Failed!!\n"
1302	"Expression: %s\n"
1303	"Location : %s(%d) %s\n",
1304	pszExpr, pszFile, uLine, pszFunction));
1305
1306	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1307	if (pVM)
1308	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1309	"\n!!R0-Assertion Failed!!\n"
1310	"Expression: %s\n"
1311	"Location : %s(%d) %s\n",
1312	pszExpr, pszFile, uLine, pszFunction);
1313	#ifdef RT_OS_DARWIN
1314	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1315	#endif
1316	}
1317
1318
1319	/**
1320	* Callback for RTLogFormatV which writes to the ring-3 log port.
1321	* See PFNLOGOUTPUT() for details.
1322	*/
1323	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1324	{
1325	for (size_t i = 0; i < cbChars; i++)
1326	{
1327	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1328	SUPR0Printf("%c", pachChars[i]);
1329	#endif
1330	LogAlways(("%c", pachChars[i]));
1331	}
1332
1333	return cbChars;
1334	}
1335
1336
1337	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1338	{
1339	va_list va;
1340
1341	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1342	if (pLog)
1343	{
1344	va_start(va, pszFormat);
1345	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1346	va_end(va);
1347
1348	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1349	if (pVM)
1350	{
1351	va_start(va, pszFormat);
1352	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1353	va_end(va);
1354	}
1355	}
1356
1357	#ifdef RT_OS_DARWIN
1358	va_start(va, pszFormat);
1359	RTAssertMsg2V(pszFormat, va);
1360	va_end(va);
1361	#endif
1362	}
1363

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 20979

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