VMMR0.cpp@ 19495

Last change on this file since 19495 was 19462, checked in by vboxsync, 16 years ago
VMM: iLastGZRc from VMM to VMMCPU.
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1	/* $Id: VMMR0.cpp 19462 2009-05-06 20:20:47Z 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	#include <VBox/gvmm.h>
36	#include <VBox/gmm.h>
37	#include <VBox/intnet.h>
38	#include <VBox/hwaccm.h>
39	#include <VBox/param.h>
40
41	#include <VBox/err.h>
42	#include <VBox/version.h>
43	#include <VBox/log.h>
44	#include <iprt/assert.h>
45	#include <iprt/stdarg.h>
46	#include <iprt/mp.h>
47	#include <iprt/string.h>
48
49	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
50	# pragma intrinsic(_AddressOfReturnAddress)
51	#endif
52
53
54	/*******************************************************************************
55	* Internal Functions *
56	*******************************************************************************/
57	__BEGIN_DECLS
58	VMMR0DECL(int) ModuleInit(void);
59	VMMR0DECL(void) ModuleTerm(void);
60	__END_DECLS
61
62
63	/*******************************************************************************
64	* Global Variables *
65	*******************************************************************************/
66	/** Pointer to the internal networking service instance. */
67	PINTNET g_pIntNet = 0;
68
69
70	/**
71	* Initialize the module.
72	* This is called when we're first loaded.
73	*
74	* @returns 0 on success.
75	* @returns VBox status on failure.
76	*/
77	VMMR0DECL(int) ModuleInit(void)
78	{
79	LogFlow(("ModuleInit:\n"));
80
81	/*
82	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
83	*/
84	int rc = GVMMR0Init();
85	if (RT_SUCCESS(rc))
86	{
87	rc = GMMR0Init();
88	if (RT_SUCCESS(rc))
89	{
90	rc = HWACCMR0Init();
91	if (RT_SUCCESS(rc))
92	{
93	rc = PGMRegisterStringFormatTypes();
94	if (RT_SUCCESS(rc))
95	{
96	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
97	rc = PGMR0DynMapInit();
98	#endif
99	if (RT_SUCCESS(rc))
100	{
101	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
102	g_pIntNet = NULL;
103	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
104	rc = INTNETR0Create(&g_pIntNet);
105	if (RT_SUCCESS(rc))
106	{
107	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
108	return VINF_SUCCESS;
109	}
110
111	/* bail out */
112	g_pIntNet = NULL;
113	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
114	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
115	PGMR0DynMapTerm();
116	#endif
117	}
118	PGMDeregisterStringFormatTypes();
119	}
120	HWACCMR0Term();
121	}
122	GMMR0Term();
123	}
124	GVMMR0Term();
125	}
126
127	LogFlow(("ModuleInit: failed %Rrc\n", rc));
128	return rc;
129	}
130
131
132	/**
133	* Terminate the module.
134	* This is called when we're finally unloaded.
135	*/
136	VMMR0DECL(void) ModuleTerm(void)
137	{
138	LogFlow(("ModuleTerm:\n"));
139
140	/*
141	* Destroy the internal networking instance.
142	*/
143	if (g_pIntNet)
144	{
145	INTNETR0Destroy(g_pIntNet);
146	g_pIntNet = NULL;
147	}
148
149	/*
150	* PGM (Darwin) and HWACCM global cleanup.
151	* Destroy the GMM and GVMM instances.
152	*/
153	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
154	PGMR0DynMapTerm();
155	#endif
156	PGMDeregisterStringFormatTypes();
157	HWACCMR0Term();
158
159	GMMR0Term();
160	GVMMR0Term();
161
162	LogFlow(("ModuleTerm: returns\n"));
163	}
164
165
166	/**
167	* Initaties the R0 driver for a particular VM instance.
168	*
169	* @returns VBox status code.
170	*
171	* @param pVM The VM instance in question.
172	* @param uSvnRev The SVN revision of the ring-3 part.
173	* @thread EMT.
174	*/
175	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
176	{
177	/*
178	* Match the SVN revisions.
179	*/
180	if (uSvnRev != VMMGetSvnRev())
181	{
182	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
183	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
184	return VERR_VERSION_MISMATCH;
185	}
186	if ( !VALID_PTR(pVM)
187	\|\| pVM->pVMR0 != pVM)
188	return VERR_INVALID_PARAMETER;
189
190	/*
191	* Register the EMT R0 logger instance.
192	*/
193	PVMMR0LOGGER pR0Logger = pVM->vmm.s.pR0LoggerR0;
194	if (pR0Logger)
195	{
196	#if 0 /* testing of the logger. */
197	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
198	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
199	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
200	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
201
202	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
203	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
204	RTLogSetDefaultInstanceThread(NULL, 0);
205	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
206
207	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
208	LogCom(("vmmR0InitVM: returned succesfully from direct logger call.\n"));
209	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
210	LogCom(("vmmR0InitVM: returned succesfully from direct flush call.\n"));
211
212	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
213	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
214	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
215	LogCom(("vmmR0InitVM: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
216	RTLogSetDefaultInstanceThread(NULL, 0);
217	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
218
219	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
220	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
221
222	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
223	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
224	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
225	#endif
226	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
227	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
228	}
229
230	/*
231	* Initialize the per VM data for GVMM and GMM.
232	*/
233	int rc = GVMMR0InitVM(pVM);
234	// if (RT_SUCCESS(rc))
235	// rc = GMMR0InitPerVMData(pVM);
236	if (RT_SUCCESS(rc))
237	{
238	/*
239	* Init HWACCM, CPUM and PGM (Darwin only).
240	*/
241	rc = HWACCMR0InitVM(pVM);
242	if (RT_SUCCESS(rc))
243	{
244	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
245	if (RT_SUCCESS(rc))
246	{
247	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
248	rc = PGMR0DynMapInitVM(pVM);
249	#endif
250	if (RT_SUCCESS(rc))
251	{
252	GVMMR0DoneInitVM(pVM);
253	return rc;
254	}
255
256	/* bail out */
257	}
258	HWACCMR0TermVM(pVM);
259	}
260	}
261	RTLogSetDefaultInstanceThread(NULL, 0);
262	return rc;
263	}
264
265
266	/**
267	* Terminates the R0 driver for a particular VM instance.
268	*
269	* This is normally called by ring-3 as part of the VM termination process, but
270	* may alternatively be called during the support driver session cleanup when
271	* the VM object is destroyed (see GVMM).
272	*
273	* @returns VBox status code.
274	*
275	* @param pVM The VM instance in question.
276	* @param pGVM Pointer to the global VM structure. Optional.
277	* @thread EMT or session clean up thread.
278	*/
279	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
280	{
281	/*
282	* Tell GVMM what we're up to and check that we only do this once.
283	*/
284	if (GVMMR0DoingTermVM(pVM, pGVM))
285	{
286	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
287	PGMR0DynMapTermVM(pVM);
288	#endif
289	HWACCMR0TermVM(pVM);
290	}
291
292	/*
293	* Deregister the logger.
294	*/
295	RTLogSetDefaultInstanceThread(NULL, 0);
296	return VINF_SUCCESS;
297	}
298
299
300	/**
301	* Calls the ring-3 host code.
302	*
303	* @returns VBox status code of the ring-3 call.
304	* @param pVM The VM handle.
305	* @param enmOperation The operation.
306	* @param uArg The argument to the operation.
307	*/
308	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
309	{
310	PVMCPU pVCpu = VMMGetCpu(pVM);
311
312	/** @todo profile this! */
313	pVCpu->vmm.s.enmCallHostOperation = enmOperation;
314	pVCpu->vmm.s.u64CallHostArg = uArg;
315	pVCpu->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
316	int rc = vmmR0CallHostLongJmp(&pVCpu->vmm.s.CallHostR0JmpBuf, VINF_VMM_CALL_HOST);
317	if (rc == VINF_SUCCESS)
318	rc = pVCpu->vmm.s.rcCallHost;
319	return rc;
320	}
321
322
323	#ifdef VBOX_WITH_STATISTICS
324	/**
325	* Record return code statistics
326	* @param pVM The VM handle.
327	* @param pVCpu The VMCPU handle.
328	* @param rc The status code.
329	*/
330	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
331	{
332	/*
333	* Collect statistics.
334	*/
335	switch (rc)
336	{
337	case VINF_SUCCESS:
338	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
339	break;
340	case VINF_EM_RAW_INTERRUPT:
341	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
342	break;
343	case VINF_EM_RAW_INTERRUPT_HYPER:
344	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
345	break;
346	case VINF_EM_RAW_GUEST_TRAP:
347	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
348	break;
349	case VINF_EM_RAW_RING_SWITCH:
350	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
351	break;
352	case VINF_EM_RAW_RING_SWITCH_INT:
353	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
354	break;
355	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
356	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetExceptionPrivilege);
357	break;
358	case VINF_EM_RAW_STALE_SELECTOR:
359	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
360	break;
361	case VINF_EM_RAW_IRET_TRAP:
362	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
363	break;
364	case VINF_IOM_HC_IOPORT_READ:
365	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
366	break;
367	case VINF_IOM_HC_IOPORT_WRITE:
368	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
369	break;
370	case VINF_IOM_HC_MMIO_READ:
371	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
372	break;
373	case VINF_IOM_HC_MMIO_WRITE:
374	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
375	break;
376	case VINF_IOM_HC_MMIO_READ_WRITE:
377	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
378	break;
379	case VINF_PATM_HC_MMIO_PATCH_READ:
380	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
381	break;
382	case VINF_PATM_HC_MMIO_PATCH_WRITE:
383	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
384	break;
385	case VINF_EM_RAW_EMULATE_INSTR:
386	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
387	break;
388	case VINF_EM_RAW_EMULATE_IO_BLOCK:
389	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
390	break;
391	case VINF_PATCH_EMULATE_INSTR:
392	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
393	break;
394	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
395	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
396	break;
397	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
398	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
399	break;
400	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
401	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
402	break;
403	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
404	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
405	break;
406	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
407	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
408	break;
409	case VINF_CSAM_PENDING_ACTION:
410	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
411	break;
412	case VINF_PGM_SYNC_CR3:
413	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
414	break;
415	case VINF_PATM_PATCH_INT3:
416	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
417	break;
418	case VINF_PATM_PATCH_TRAP_PF:
419	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
420	break;
421	case VINF_PATM_PATCH_TRAP_GP:
422	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
423	break;
424	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
425	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
426	break;
427	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
428	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPageOverflow);
429	break;
430	case VINF_EM_RESCHEDULE_REM:
431	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
432	break;
433	case VINF_EM_RAW_TO_R3:
434	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
435	break;
436	case VINF_EM_RAW_TIMER_PENDING:
437	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
438	break;
439	case VINF_EM_RAW_INTERRUPT_PENDING:
440	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
441	break;
442	case VINF_VMM_CALL_HOST:
443	switch (pVCpu->vmm.s.enmCallHostOperation)
444	{
445	case VMMCALLHOST_PDM_LOCK:
446	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
447	break;
448	case VMMCALLHOST_PDM_QUEUE_FLUSH:
449	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
450	break;
451	case VMMCALLHOST_PGM_POOL_GROW:
452	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
453	break;
454	case VMMCALLHOST_PGM_LOCK:
455	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
456	break;
457	case VMMCALLHOST_PGM_MAP_CHUNK:
458	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
459	break;
460	case VMMCALLHOST_PGM_ALLOCATE_HANDY_PAGES:
461	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
462	break;
463	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
464	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
465	break;
466	case VMMCALLHOST_VMM_LOGGER_FLUSH:
467	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
468	break;
469	case VMMCALLHOST_VM_SET_ERROR:
470	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
471	break;
472	case VMMCALLHOST_VM_SET_RUNTIME_ERROR:
473	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
474	break;
475	case VMMCALLHOST_VM_R0_ASSERTION:
476	default:
477	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallHost);
478	break;
479	}
480	break;
481	case VINF_PATM_DUPLICATE_FUNCTION:
482	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
483	break;
484	case VINF_PGM_CHANGE_MODE:
485	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
486	break;
487	case VINF_EM_RAW_EMULATE_INSTR_HLT:
488	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulHlt);
489	break;
490	case VINF_EM_PENDING_REQUEST:
491	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
492	break;
493	default:
494	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
495	break;
496	}
497	}
498	#endif /* VBOX_WITH_STATISTICS */
499
500
501	/**
502	* Unused ring-0 entry point that used to be called from the interrupt gate.
503	*
504	* Will be removed one of the next times we do a major SUPDrv version bump.
505	*
506	* @returns VBox status code.
507	* @param pVM The VM to operate on.
508	* @param enmOperation Which operation to execute.
509	* @param pvArg Argument to the operation.
510	* @remarks Assume called with interrupts disabled.
511	*/
512	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
513	{
514	/*
515	* We're returning VERR_NOT_SUPPORT here so we've got something else
516	* than -1 which the interrupt gate glue code might return.
517	*/
518	Log(("operation %#x is not supported\n", enmOperation));
519	return VERR_NOT_SUPPORTED;
520	}
521
522
523	/**
524	* The Ring 0 entry point, called by the fast-ioctl path.
525	*
526	* @param pVM The VM to operate on.
527	* The return code is stored in pVM->vmm.s.iLastGZRc.
528	* @param idCpu The Virtual CPU ID of the calling EMT.
529	* @param enmOperation Which operation to execute.
530	* @remarks Assume called with interrupts _enabled_.
531	*/
532	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
533	{
534	if (RT_UNLIKELY(idCpu >= pVM->cCPUs))
535	return;
536	PVMCPU pVCpu = &pVM->aCpus[idCpu];
537
538	switch (enmOperation)
539	{
540	/*
541	* Switch to GC and run guest raw mode code.
542	* Disable interrupts before doing the world switch.
543	*/
544	case VMMR0_DO_RAW_RUN:
545	{
546	/* Safety precaution as hwaccm disables the switcher. */
547	if (RT_LIKELY(!pVM->vmm.s.fSwitcherDisabled))
548	{
549	RTCCUINTREG uFlags = ASMIntDisableFlags();
550	int rc;
551	bool fVTxDisabled;
552
553	if (RT_UNLIKELY(pVM->cCPUs > 1))
554	{
555	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
556	return;
557	}
558
559	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
560	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
561	{
562	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
563	return;
564	}
565	#endif
566
567	/* We might need to disable VT-x if the active switcher turns off paging. */
568	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
569	if (RT_FAILURE(rc))
570	{
571	pVCpu->vmm.s.iLastGZRc = rc;
572	return;
573	}
574
575	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
576	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
577
578	TMNotifyStartOfExecution(pVCpu);
579	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
580	pVCpu->vmm.s.iLastGZRc = rc;
581	TMNotifyEndOfExecution(pVCpu);
582
583	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
584	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
585
586	/* Re-enable VT-x if previously turned off. */
587	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
588
589	if ( rc == VINF_EM_RAW_INTERRUPT
590	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
591	TRPMR0DispatchHostInterrupt(pVM);
592
593	ASMSetFlags(uFlags);
594
595	#ifdef VBOX_WITH_STATISTICS
596	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
597	vmmR0RecordRC(pVM, pVCpu, rc);
598	#endif
599	}
600	else
601	{
602	Assert(!pVM->vmm.s.fSwitcherDisabled);
603	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
604	}
605	break;
606	}
607
608	/*
609	* Run guest code using the available hardware acceleration technology.
610	*
611	* Disable interrupts before we do anything interesting. On Windows we avoid
612	* this by having the support driver raise the IRQL before calling us, this way
613	* we hope to get away with page faults and later calling into the kernel.
614	*/
615	case VMMR0_DO_HWACC_RUN:
616	{
617	int rc;
618
619	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
620
621	#ifndef RT_OS_WINDOWS /** @todo check other hosts */
622	RTCCUINTREG uFlags = ASMIntDisableFlags();
623	#endif
624	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
625
626	if (!HWACCMR0SuspendPending())
627	{
628	rc = HWACCMR0Enter(pVM, pVCpu);
629	if (RT_SUCCESS(rc))
630	{
631	rc = vmmR0CallHostSetJmp(&pVCpu->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
632	int rc2 = HWACCMR0Leave(pVM, pVCpu);
633	AssertRC(rc2);
634	}
635	}
636	else
637	{
638	/* System is about to go into suspend mode; go back to ring 3. */
639	rc = VINF_EM_RAW_INTERRUPT;
640	}
641	pVCpu->vmm.s.iLastGZRc = rc;
642
643	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
644	#ifndef RT_OS_WINDOWS /** @todo check other hosts */
645	ASMSetFlags(uFlags);
646	#endif
647
648	#ifdef VBOX_WITH_STATISTICS
649	vmmR0RecordRC(pVM, pVCpu, rc);
650	#endif
651	/* No special action required for external interrupts, just return. */
652	break;
653	}
654
655	/*
656	* For profiling.
657	*/
658	case VMMR0_DO_NOP:
659	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
660	break;
661
662	/*
663	* Impossible.
664	*/
665	default:
666	AssertMsgFailed(("%#x\n", enmOperation));
667	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
668	break;
669	}
670	}
671
672
673	/**
674	* Validates a session or VM session argument.
675	*
676	* @returns true / false accordingly.
677	* @param pVM The VM argument.
678	* @param pSession The session argument.
679	*/
680	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
681	{
682	/* This must be set! */
683	if (!pSession)
684	return false;
685
686	/* Only one out of the two. */
687	if (pVM && pClaimedSession)
688	return false;
689	if (pVM)
690	pClaimedSession = pVM->pSession;
691	return pClaimedSession == pSession;
692	}
693
694
695	/**
696	* VMMR0EntryEx worker function, either called directly or when ever possible
697	* called thru a longjmp so we can exit safely on failure.
698	*
699	* @returns VBox status code.
700	* @param pVM The VM to operate on.
701	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
702	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
703	* @param enmOperation Which operation to execute.
704	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
705	* The support driver validates this if it's present.
706	* @param u64Arg Some simple constant argument.
707	* @param pSession The session of the caller.
708	* @remarks Assume called with interrupts _enabled_.
709	*/
710	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
711	{
712	/*
713	* Common VM pointer validation.
714	*/
715	if (pVM)
716	{
717	if (RT_UNLIKELY( !VALID_PTR(pVM)
718	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
719	{
720	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
721	return VERR_INVALID_POINTER;
722	}
723	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
724	\|\| pVM->enmVMState > VMSTATE_TERMINATED
725	\|\| pVM->pVMR0 != pVM))
726	{
727	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
728	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
729	return VERR_INVALID_POINTER;
730	}
731
732	if (RT_UNLIKELY(idCpu >= pVM->cCPUs && idCpu != NIL_VMCPUID))
733	{
734	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCPUs=%u)\n", idCpu, pVM->cCPUs);
735	return VERR_INVALID_PARAMETER;
736	}
737	}
738	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
739	{
740	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
741	return VERR_INVALID_PARAMETER;
742	}
743
744
745	switch (enmOperation)
746	{
747	/*
748	* GVM requests
749	*/
750	case VMMR0_DO_GVMM_CREATE_VM:
751	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
752	return VERR_INVALID_PARAMETER;
753	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
754
755	case VMMR0_DO_GVMM_DESTROY_VM:
756	if (pReqHdr \|\| u64Arg)
757	return VERR_INVALID_PARAMETER;
758	return GVMMR0DestroyVM(pVM);
759
760	case VMMR0_DO_GVMM_REGISTER_VMCPU:
761	if (!pVM)
762	return VERR_INVALID_PARAMETER;
763	return GVMMR0RegisterVCpu(pVM, idCpu);
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 raw-mode 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.CallHostR0JmpBuf.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 vmmR0CallHostSetJmpEx(&pVCpu->vmm.s.CallHostR0JmpBuf, vmmR0EntryExWrapper, &Args);
1121	}
1122
1123	default:
1124	break;
1125	}
1126	}
1127	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1128	}
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	/*
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.CallHostR0JmpBuf.eip
1173	\|\| pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1174	#else
1175	if ( !pVCpu->vmm.s.CallHostR0JmpBuf.rip
1176	\|\| pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1177	#endif
1178	{
1179	#ifdef DEBUG
1180	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1181	#endif
1182	return;
1183	}
1184	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
1185	}
1186
1187
1188	/**
1189	* Disables flushing of the ring-0 debug log.
1190	*
1191	* @param pVCpu The shared virtual cpu structure.
1192	*/
1193	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1194	{
1195	PVM pVM = pVCpu->pVMR0;
1196	if (pVM->vmm.s.pR0LoggerR0)
1197	pVM->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1198	}
1199
1200
1201	/**
1202	* Enables flushing of the ring-0 debug log.
1203	*
1204	* @param pVCpu The shared virtual cpu structure.
1205	*/
1206	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1207	{
1208	PVM pVM = pVCpu->pVMR0;
1209	if (pVM->vmm.s.pR0LoggerR0)
1210	pVM->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1211	}
1212
1213
1214	/**
1215	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1216	*
1217	* @returns true if the breakpoint should be hit, false if it should be ignored.
1218	*/
1219	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1220	{
1221	#if 0
1222	return true;
1223	#else
1224	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1225	if (pVM)
1226	{
1227	PVMCPU pVCpu = VMMGetCpu(pVM);
1228
1229	#ifdef RT_ARCH_X86
1230	if ( pVCpu->vmm.s.CallHostR0JmpBuf.eip
1231	&& !pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1232	#else
1233	if ( pVCpu->vmm.s.CallHostR0JmpBuf.rip
1234	&& !pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1235	#endif
1236	{
1237	int rc = VMMR0CallHost(pVM, VMMCALLHOST_VM_R0_ASSERTION, 0);
1238	return RT_FAILURE_NP(rc);
1239	}
1240	}
1241	#ifdef RT_OS_LINUX
1242	return true;
1243	#else
1244	return false;
1245	#endif
1246	#endif
1247	}
1248
1249
1250	/**
1251	* Override this so we can push it up to ring-3.
1252	*
1253	* @param pszExpr Expression. Can be NULL.
1254	* @param uLine Location line number.
1255	* @param pszFile Location file name.
1256	* @param pszFunction Location function name.
1257	*/
1258	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1259	{
1260	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1261	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1262	"Expression: %s\n"
1263	"Location : %s(%d) %s\n",
1264	pszExpr, pszFile, uLine, pszFunction);
1265	#endif
1266	LogAlways(("\n!!R0-Assertion Failed!!\n"
1267	"Expression: %s\n"
1268	"Location : %s(%d) %s\n",
1269	pszExpr, pszFile, uLine, pszFunction));
1270
1271	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1272	if (pVM)
1273	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1274	"\n!!R0-Assertion Failed!!\n"
1275	"Expression: %s\n"
1276	"Location : %s(%d) %s\n",
1277	pszExpr, pszFile, uLine, pszFunction);
1278	#ifdef RT_OS_DARWIN
1279	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1280	#endif
1281	}
1282
1283
1284	/**
1285	* Callback for RTLogFormatV which writes to the ring-3 log port.
1286	* See PFNLOGOUTPUT() for details.
1287	*/
1288	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1289	{
1290	for (size_t i = 0; i < cbChars; i++)
1291	{
1292	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1293	SUPR0Printf("%c", pachChars[i]);
1294	#endif
1295	LogAlways(("%c", pachChars[i]));
1296	}
1297
1298	return cbChars;
1299	}
1300
1301
1302	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1303	{
1304	va_list va;
1305
1306	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1307	if (pLog)
1308	{
1309	va_start(va, pszFormat);
1310	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1311	va_end(va);
1312
1313	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1314	if (pVM)
1315	{
1316	va_start(va, pszFormat);
1317	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1318	va_end(va);
1319	}
1320	}
1321
1322	#ifdef RT_OS_DARWIN
1323	va_start(va, pszFormat);
1324	RTAssertMsg2V(pszFormat, va);
1325	va_end(va);
1326	#endif
1327	}
1328

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 19495

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