VMMR0.cpp@ 29294

Last change on this file since 29294 was 29250, checked in by vboxsync, 15 years ago
iprt/asm.h: split out asm-math.h, don't include asm-.h from asm.h, don't include asm.h from sup.h. Fixed a couple file headers.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 46.9 KB

Line
1	/* $Id: VMMR0.cpp 29250 2010-05-09 17:53:58Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_VMM
22	#include <VBox/vmm.h>
23	#include <VBox/sup.h>
24	#include <VBox/trpm.h>
25	#include <VBox/cpum.h>
26	#include <VBox/pdmapi.h>
27	#include <VBox/pgm.h>
28	#include <VBox/stam.h>
29	#include <VBox/tm.h>
30	#include "VMMInternal.h"
31	#include <VBox/vm.h>
32
33	#include <VBox/gvmm.h>
34	#include <VBox/gmm.h>
35	#include <VBox/intnet.h>
36	#include <VBox/hwaccm.h>
37	#include <VBox/param.h>
38	#include <VBox/err.h>
39	#include <VBox/version.h>
40	#include <VBox/log.h>
41
42	#include <iprt/asm-amd64-x86.h>
43	#include <iprt/assert.h>
44	#include <iprt/crc32.h>
45	#include <iprt/mp.h>
46	#include <iprt/stdarg.h>
47	#include <iprt/string.h>
48	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
49	# include <iprt/thread.h>
50	#endif
51
52	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
53	# pragma intrinsic(_AddressOfReturnAddress)
54	#endif
55
56
57	/*******************************************************************************
58	* Internal Functions *
59	*******************************************************************************/
60	RT_C_DECLS_BEGIN
61	VMMR0DECL(int) ModuleInit(void);
62	VMMR0DECL(void) ModuleTerm(void);
63	RT_C_DECLS_END
64
65
66	/*******************************************************************************
67	* Global Variables *
68	*******************************************************************************/
69	/** Drag in necessary library bits.
70	* The runtime lives here (in VMMR0.r0) and VBoxDDR0.r0 links against us. /
71	PFNRT g_VMMGCDeps[] =
72	{
73	(PFNRT)RTCrc32
74	};
75
76
77	/**
78	* Initialize the module.
79	* This is called when we're first loaded.
80	*
81	* @returns 0 on success.
82	* @returns VBox status on failure.
83	*/
84	VMMR0DECL(int) ModuleInit(void)
85	{
86	LogFlow(("ModuleInit:\n"));
87
88	/*
89	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
90	*/
91	int rc = GVMMR0Init();
92	if (RT_SUCCESS(rc))
93	{
94	rc = GMMR0Init();
95	if (RT_SUCCESS(rc))
96	{
97	rc = HWACCMR0Init();
98	if (RT_SUCCESS(rc))
99	{
100	rc = PGMRegisterStringFormatTypes();
101	if (RT_SUCCESS(rc))
102	{
103	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
104	rc = PGMR0DynMapInit();
105	#endif
106	if (RT_SUCCESS(rc))
107	{
108	rc = IntNetR0Init();
109	if (RT_SUCCESS(rc))
110	{
111	LogFlow(("ModuleInit: returns success.\n"));
112	return VINF_SUCCESS;
113	}
114
115	/* bail out */
116	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
117	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
118	PGMR0DynMapTerm();
119	#endif
120	}
121	PGMDeregisterStringFormatTypes();
122	}
123	HWACCMR0Term();
124	}
125	GMMR0Term();
126	}
127	GVMMR0Term();
128	}
129
130	LogFlow(("ModuleInit: failed %Rrc\n", rc));
131	return rc;
132	}
133
134
135	/**
136	* Terminate the module.
137	* This is called when we're finally unloaded.
138	*/
139	VMMR0DECL(void) ModuleTerm(void)
140	{
141	LogFlow(("ModuleTerm:\n"));
142
143	/*
144	* Terminate the internal network service.
145	*/
146	IntNetR0Term();
147
148	/*
149	* PGM (Darwin) and HWACCM global cleanup.
150	*/
151	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
152	PGMR0DynMapTerm();
153	#endif
154	PGMDeregisterStringFormatTypes();
155	HWACCMR0Term();
156
157	/*
158	* Destroy the GMM and GVMM instances.
159	*/
160	GMMR0Term();
161	GVMMR0Term();
162
163	LogFlow(("ModuleTerm: returns\n"));
164	}
165
166
167	/**
168	* Initaties the R0 driver for a particular VM instance.
169	*
170	* @returns VBox status code.
171	*
172	* @param pVM The VM instance in question.
173	* @param uSvnRev The SVN revision of the ring-3 part.
174	* @thread EMT.
175	*/
176	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
177	{
178	/*
179	* Match the SVN revisions.
180	*/
181	if (uSvnRev != VMMGetSvnRev())
182	{
183	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
184	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
185	return VERR_VERSION_MISMATCH;
186	}
187	if ( !VALID_PTR(pVM)
188	\|\| pVM->pVMR0 != pVM)
189	return VERR_INVALID_PARAMETER;
190
191	#ifdef LOG_ENABLED
192	/*
193	* Register the EMT R0 logger instance for VCPU 0.
194	*/
195	PVMCPU pVCpu = &pVM->aCpus[0];
196
197	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
198	if (pR0Logger)
199	{
200	# if 0 /* testing of the logger. */
201	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
202	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
203	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
204	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
205
206	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
207	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
208	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
209	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
210
211	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
212	LogCom(("vmmR0InitVM: returned succesfully from direct logger call.\n"));
213	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
214	LogCom(("vmmR0InitVM: returned succesfully from direct flush call.\n"));
215
216	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
217	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
218	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
219	LogCom(("vmmR0InitVM: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
220	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
221	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
222
223	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
224	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
225
226	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
227	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
228	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
229	# endif
230	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
231	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
232	pR0Logger->fRegistered = true;
233	}
234	#endif /* LOG_ENABLED */
235
236	/*
237	* Initialize the per VM data for GVMM and GMM.
238	*/
239	int rc = GVMMR0InitVM(pVM);
240	// if (RT_SUCCESS(rc))
241	// rc = GMMR0InitPerVMData(pVM);
242	if (RT_SUCCESS(rc))
243	{
244	/*
245	* Init HWACCM, CPUM and PGM (Darwin only).
246	*/
247	rc = HWACCMR0InitVM(pVM);
248	if (RT_SUCCESS(rc))
249	{
250	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
251	if (RT_SUCCESS(rc))
252	{
253	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
254	rc = PGMR0DynMapInitVM(pVM);
255	#endif
256	if (RT_SUCCESS(rc))
257	{
258	GVMMR0DoneInitVM(pVM);
259	return rc;
260	}
261
262	/* bail out */
263	}
264	HWACCMR0TermVM(pVM);
265	}
266	}
267	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
268	return rc;
269	}
270
271
272	/**
273	* Terminates the R0 driver for a particular VM instance.
274	*
275	* This is normally called by ring-3 as part of the VM termination process, but
276	* may alternatively be called during the support driver session cleanup when
277	* the VM object is destroyed (see GVMM).
278	*
279	* @returns VBox status code.
280	*
281	* @param pVM The VM instance in question.
282	* @param pGVM Pointer to the global VM structure. Optional.
283	* @thread EMT or session clean up thread.
284	*/
285	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
286	{
287	/*
288	* Tell GVMM what we're up to and check that we only do this once.
289	*/
290	if (GVMMR0DoingTermVM(pVM, pGVM))
291	{
292	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
293	PGMR0DynMapTermVM(pVM);
294	#endif
295	HWACCMR0TermVM(pVM);
296	}
297
298	/*
299	* Deregister the logger.
300	*/
301	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
302	return VINF_SUCCESS;
303	}
304
305
306	#ifdef VBOX_WITH_STATISTICS
307	/**
308	* Record return code statistics
309	* @param pVM The VM handle.
310	* @param pVCpu The VMCPU handle.
311	* @param rc The status code.
312	*/
313	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
314	{
315	/*
316	* Collect statistics.
317	*/
318	switch (rc)
319	{
320	case VINF_SUCCESS:
321	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
322	break;
323	case VINF_EM_RAW_INTERRUPT:
324	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
325	break;
326	case VINF_EM_RAW_INTERRUPT_HYPER:
327	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
328	break;
329	case VINF_EM_RAW_GUEST_TRAP:
330	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
331	break;
332	case VINF_EM_RAW_RING_SWITCH:
333	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
334	break;
335	case VINF_EM_RAW_RING_SWITCH_INT:
336	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
337	break;
338	case VINF_EM_RAW_STALE_SELECTOR:
339	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
340	break;
341	case VINF_EM_RAW_IRET_TRAP:
342	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
343	break;
344	case VINF_IOM_HC_IOPORT_READ:
345	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
346	break;
347	case VINF_IOM_HC_IOPORT_WRITE:
348	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
349	break;
350	case VINF_IOM_HC_MMIO_READ:
351	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
352	break;
353	case VINF_IOM_HC_MMIO_WRITE:
354	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
355	break;
356	case VINF_IOM_HC_MMIO_READ_WRITE:
357	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
358	break;
359	case VINF_PATM_HC_MMIO_PATCH_READ:
360	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
361	break;
362	case VINF_PATM_HC_MMIO_PATCH_WRITE:
363	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
364	break;
365	case VINF_EM_RAW_EMULATE_INSTR:
366	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
367	break;
368	case VINF_EM_RAW_EMULATE_IO_BLOCK:
369	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
370	break;
371	case VINF_PATCH_EMULATE_INSTR:
372	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
373	break;
374	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
375	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
376	break;
377	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
378	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
379	break;
380	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
381	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
382	break;
383	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
384	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
385	break;
386	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
387	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
388	break;
389	case VINF_CSAM_PENDING_ACTION:
390	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
391	break;
392	case VINF_PGM_SYNC_CR3:
393	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
394	break;
395	case VINF_PATM_PATCH_INT3:
396	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
397	break;
398	case VINF_PATM_PATCH_TRAP_PF:
399	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
400	break;
401	case VINF_PATM_PATCH_TRAP_GP:
402	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
403	break;
404	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
405	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
406	break;
407	case VINF_EM_RESCHEDULE_REM:
408	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
409	break;
410	case VINF_EM_RAW_TO_R3:
411	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
412	break;
413	case VINF_EM_RAW_TIMER_PENDING:
414	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
415	break;
416	case VINF_EM_RAW_INTERRUPT_PENDING:
417	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
418	break;
419	case VINF_VMM_CALL_HOST:
420	switch (pVCpu->vmm.s.enmCallRing3Operation)
421	{
422	case VMMCALLRING3_PDM_LOCK:
423	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
424	break;
425	case VMMCALLRING3_PDM_QUEUE_FLUSH:
426	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
427	break;
428	case VMMCALLRING3_PGM_POOL_GROW:
429	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
430	break;
431	case VMMCALLRING3_PGM_LOCK:
432	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
433	break;
434	case VMMCALLRING3_PGM_MAP_CHUNK:
435	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
436	break;
437	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
438	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
439	break;
440	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
441	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
442	break;
443	case VMMCALLRING3_VMM_LOGGER_FLUSH:
444	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
445	break;
446	case VMMCALLRING3_VM_SET_ERROR:
447	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
448	break;
449	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
450	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
451	break;
452	case VMMCALLRING3_VM_R0_ASSERTION:
453	default:
454	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
455	break;
456	}
457	break;
458	case VINF_PATM_DUPLICATE_FUNCTION:
459	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
460	break;
461	case VINF_PGM_CHANGE_MODE:
462	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
463	break;
464	case VINF_PGM_POOL_FLUSH_PENDING:
465	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
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	ASMSetFlags(uFlags);
537	return;
538	}
539
540	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
541	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
542	{
543	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
544	ASMSetFlags(uFlags);
545	return;
546	}
547	#endif
548
549	/* We might need to disable VT-x if the active switcher turns off paging. */
550	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
551	if (RT_FAILURE(rc))
552	{
553	pVCpu->vmm.s.iLastGZRc = rc;
554	ASMSetFlags(uFlags);
555	return;
556	}
557
558	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
559	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
560
561	TMNotifyStartOfExecution(pVCpu);
562	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
563	pVCpu->vmm.s.iLastGZRc = rc;
564	TMNotifyEndOfExecution(pVCpu);
565
566	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
567	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
568
569	/* Re-enable VT-x if previously turned off. */
570	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
571
572	if ( rc == VINF_EM_RAW_INTERRUPT
573	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
574	TRPMR0DispatchHostInterrupt(pVM);
575
576	ASMSetFlags(uFlags);
577
578	#ifdef VBOX_WITH_STATISTICS
579	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
580	vmmR0RecordRC(pVM, pVCpu, rc);
581	#endif
582	}
583	else
584	{
585	Assert(!pVM->vmm.s.fSwitcherDisabled);
586	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
587	}
588	break;
589	}
590
591	/*
592	* Run guest code using the available hardware acceleration technology.
593	*
594	* Disable interrupts before we do anything interesting. On Windows we avoid
595	* this by having the support driver raise the IRQL before calling us, this way
596	* we hope to get away with page faults and later calling into the kernel.
597	*/
598	case VMMR0_DO_HWACC_RUN:
599	{
600	int rc;
601
602	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
603
604	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
605	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
606	RTThreadPreemptDisable(&PreemptState);
607	#elif !defined(RT_OS_WINDOWS)
608	RTCCUINTREG uFlags = ASMIntDisableFlags();
609	#endif
610	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
611
612	#ifdef LOG_ENABLED
613	if (pVCpu->idCpu > 0)
614	{
615	/* Lazy registration of ring 0 loggers. */
616	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
617	if ( pR0Logger
618	&& !pR0Logger->fRegistered)
619	{
620	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
621	pR0Logger->fRegistered = true;
622	}
623	}
624	#endif
625	if (!HWACCMR0SuspendPending())
626	{
627	rc = HWACCMR0Enter(pVM, pVCpu);
628	if (RT_SUCCESS(rc))
629	{
630	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
631	int rc2 = HWACCMR0Leave(pVM, pVCpu);
632	AssertRC(rc2);
633	}
634	}
635	else
636	{
637	/* System is about to go into suspend mode; go back to ring 3. */
638	rc = VINF_EM_RAW_INTERRUPT;
639	}
640	pVCpu->vmm.s.iLastGZRc = rc;
641
642	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
643	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
644	RTThreadPreemptRestore(&PreemptState);
645	#elif !defined(RT_OS_WINDOWS)
646	ASMSetFlags(uFlags);
647	#endif
648
649	#ifdef VBOX_WITH_STATISTICS
650	vmmR0RecordRC(pVM, pVCpu, rc);
651	#endif
652	/* No special action required for external interrupts, just return. */
653	break;
654	}
655
656	/*
657	* For profiling.
658	*/
659	case VMMR0_DO_NOP:
660	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
661	break;
662
663	/*
664	* Impossible.
665	*/
666	default:
667	AssertMsgFailed(("%#x\n", enmOperation));
668	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
669	break;
670	}
671	}
672
673
674	/**
675	* Validates a session or VM session argument.
676	*
677	* @returns true / false accordingly.
678	* @param pVM The VM argument.
679	* @param pSession The session argument.
680	*/
681	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
682	{
683	/* This must be set! */
684	if (!pSession)
685	return false;
686
687	/* Only one out of the two. */
688	if (pVM && pClaimedSession)
689	return false;
690	if (pVM)
691	pClaimedSession = pVM->pSession;
692	return pClaimedSession == pSession;
693	}
694
695
696	/**
697	* VMMR0EntryEx worker function, either called directly or when ever possible
698	* called thru a longjmp so we can exit safely on failure.
699	*
700	* @returns VBox status code.
701	* @param pVM The VM to operate on.
702	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
703	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
704	* @param enmOperation Which operation to execute.
705	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
706	* The support driver validates this if it's present.
707	* @param u64Arg Some simple constant argument.
708	* @param pSession The session of the caller.
709	* @remarks Assume called with interrupts _enabled_.
710	*/
711	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
712	{
713	/*
714	* Common VM pointer validation.
715	*/
716	if (pVM)
717	{
718	if (RT_UNLIKELY( !VALID_PTR(pVM)
719	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
720	{
721	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
722	return VERR_INVALID_POINTER;
723	}
724	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
725	\|\| pVM->enmVMState > VMSTATE_TERMINATED
726	\|\| pVM->pVMR0 != pVM))
727	{
728	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
729	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
730	return VERR_INVALID_POINTER;
731	}
732
733	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
734	{
735	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
736	return VERR_INVALID_PARAMETER;
737	}
738	}
739	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
740	{
741	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
742	return VERR_INVALID_PARAMETER;
743	}
744
745
746	switch (enmOperation)
747	{
748	/*
749	* GVM requests
750	*/
751	case VMMR0_DO_GVMM_CREATE_VM:
752	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
753	return VERR_INVALID_PARAMETER;
754	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
755
756	case VMMR0_DO_GVMM_DESTROY_VM:
757	if (pReqHdr \|\| u64Arg)
758	return VERR_INVALID_PARAMETER;
759	return GVMMR0DestroyVM(pVM);
760
761	case VMMR0_DO_GVMM_REGISTER_VMCPU:
762	{
763	if (!pVM)
764	return VERR_INVALID_PARAMETER;
765	return GVMMR0RegisterVCpu(pVM, idCpu);
766	}
767
768	case VMMR0_DO_GVMM_SCHED_HALT:
769	if (pReqHdr)
770	return VERR_INVALID_PARAMETER;
771	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
772
773	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
774	if (pReqHdr \|\| u64Arg)
775	return VERR_INVALID_PARAMETER;
776	return GVMMR0SchedWakeUp(pVM, idCpu);
777
778	case VMMR0_DO_GVMM_SCHED_POKE:
779	if (pReqHdr \|\| u64Arg)
780	return VERR_INVALID_PARAMETER;
781	return GVMMR0SchedPoke(pVM, idCpu);
782
783	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
784	if (u64Arg)
785	return VERR_INVALID_PARAMETER;
786	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
787
788	case VMMR0_DO_GVMM_SCHED_POLL:
789	if (pReqHdr \|\| u64Arg > 1)
790	return VERR_INVALID_PARAMETER;
791	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
792
793	case VMMR0_DO_GVMM_QUERY_STATISTICS:
794	if (u64Arg)
795	return VERR_INVALID_PARAMETER;
796	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
797
798	case VMMR0_DO_GVMM_RESET_STATISTICS:
799	if (u64Arg)
800	return VERR_INVALID_PARAMETER;
801	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
802
803	/*
804	* Initialize the R0 part of a VM instance.
805	*/
806	case VMMR0_DO_VMMR0_INIT:
807	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
808
809	/*
810	* Terminate the R0 part of a VM instance.
811	*/
812	case VMMR0_DO_VMMR0_TERM:
813	return VMMR0TermVM(pVM, NULL);
814
815	/*
816	* Attempt to enable hwacc mode and check the current setting.
817	*/
818	case VMMR0_DO_HWACC_ENABLE:
819	return HWACCMR0EnableAllCpus(pVM);
820
821	/*
822	* Setup the hardware accelerated session.
823	*/
824	case VMMR0_DO_HWACC_SETUP_VM:
825	{
826	RTCCUINTREG fFlags = ASMIntDisableFlags();
827	int rc = HWACCMR0SetupVM(pVM);
828	ASMSetFlags(fFlags);
829	return rc;
830	}
831
832	/*
833	* Switch to RC to execute Hypervisor function.
834	*/
835	case VMMR0_DO_CALL_HYPERVISOR:
836	{
837	int rc;
838	bool fVTxDisabled;
839
840	/* Safety precaution as HWACCM can disable the switcher. */
841	Assert(!pVM->vmm.s.fSwitcherDisabled);
842	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
843	return VERR_NOT_SUPPORTED;
844
845	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
846	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
847	return VERR_PGM_NO_CR3_SHADOW_ROOT;
848	#endif
849
850	RTCCUINTREG fFlags = ASMIntDisableFlags();
851
852	/* We might need to disable VT-x if the active switcher turns off paging. */
853	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
854	if (RT_FAILURE(rc))
855	return rc;
856
857	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
858
859	/* Re-enable VT-x if previously turned off. */
860	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
861
862	/** @todo dispatch interrupts? */
863	ASMSetFlags(fFlags);
864	return rc;
865	}
866
867	/*
868	* PGM wrappers.
869	*/
870	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
871	if (idCpu == NIL_VMCPUID)
872	return VERR_INVALID_CPU_ID;
873	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
874
875	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
876	if (idCpu == NIL_VMCPUID)
877	return VERR_INVALID_CPU_ID;
878	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
879
880	#ifdef VBOX_WITH_PAGE_SHARING
881	case VMMR0_DO_PGM_CHECK_SHARED_MODULE:
882	{
883	if (idCpu == NIL_VMCPUID)
884	return VERR_INVALID_CPU_ID;
885
886	PVMCPU pVCpu = &pVM->aCpus[idCpu];
887
888	/* Select a valid VCPU context. */
889	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
890
891	int rc = PGMR0SharedModuleCheck(pVM, pVCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
892
893	/* Clear the VCPU context. */
894	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
895	return rc;
896	}
897	#endif
898
899	/*
900	* GMM wrappers.
901	*/
902	case VMMR0_DO_GMM_INITIAL_RESERVATION:
903	if (u64Arg)
904	return VERR_INVALID_PARAMETER;
905	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
906
907	case VMMR0_DO_GMM_UPDATE_RESERVATION:
908	if (u64Arg)
909	return VERR_INVALID_PARAMETER;
910	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
911
912	case VMMR0_DO_GMM_ALLOCATE_PAGES:
913	if (u64Arg)
914	return VERR_INVALID_PARAMETER;
915	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
916
917	case VMMR0_DO_GMM_FREE_PAGES:
918	if (u64Arg)
919	return VERR_INVALID_PARAMETER;
920	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
921
922	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
923	if (u64Arg)
924	return VERR_INVALID_PARAMETER;
925	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
926
927	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
928	if (u64Arg)
929	return VERR_INVALID_PARAMETER;
930	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
931
932	case VMMR0_DO_GMM_QUERY_MEM_STATS:
933	if (idCpu == NIL_VMCPUID)
934	return VERR_INVALID_CPU_ID;
935	if (u64Arg)
936	return VERR_INVALID_PARAMETER;
937	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
938
939	case VMMR0_DO_GMM_BALLOONED_PAGES:
940	if (u64Arg)
941	return VERR_INVALID_PARAMETER;
942	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
943
944	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
945	if (u64Arg)
946	return VERR_INVALID_PARAMETER;
947	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
948
949	case VMMR0_DO_GMM_SEED_CHUNK:
950	if (pReqHdr)
951	return VERR_INVALID_PARAMETER;
952	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
953
954	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
955	if (idCpu == NIL_VMCPUID)
956	return VERR_INVALID_CPU_ID;
957	if (u64Arg)
958	return VERR_INVALID_PARAMETER;
959	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
960
961	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
962	if (idCpu == NIL_VMCPUID)
963	return VERR_INVALID_CPU_ID;
964	if (u64Arg)
965	return VERR_INVALID_PARAMETER;
966	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
967
968	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
969	if (idCpu == NIL_VMCPUID)
970	return VERR_INVALID_CPU_ID;
971	if ( u64Arg
972	\|\| pReqHdr)
973	return VERR_INVALID_PARAMETER;
974	return GMMR0ResetSharedModules(pVM, idCpu);
975
976	/*
977	* A quick GCFGM mock-up.
978	*/
979	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
980	case VMMR0_DO_GCFGM_SET_VALUE:
981	case VMMR0_DO_GCFGM_QUERY_VALUE:
982	{
983	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
984	return VERR_INVALID_PARAMETER;
985	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
986	if (pReq->Hdr.cbReq != sizeof(*pReq))
987	return VERR_INVALID_PARAMETER;
988	int rc;
989	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
990	{
991	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
992	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
993	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
994	}
995	else
996	{
997	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
998	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
999	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1000	}
1001	return rc;
1002	}
1003
1004	/*
1005	* PDM Wrappers.
1006	*/
1007	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1008	{
1009	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1010	return VERR_INVALID_PARAMETER;
1011	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1012	}
1013
1014	/*
1015	* Requests to the internal networking service.
1016	*/
1017	case VMMR0_DO_INTNET_OPEN:
1018	{
1019	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1020	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1021	return VERR_INVALID_PARAMETER;
1022	return IntNetR0OpenReq(pSession, pReq);
1023	}
1024
1025	case VMMR0_DO_INTNET_IF_CLOSE:
1026	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1027	return VERR_INVALID_PARAMETER;
1028	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1029
1030	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1031	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1032	return VERR_INVALID_PARAMETER;
1033	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1034
1035	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1036	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1037	return VERR_INVALID_PARAMETER;
1038	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1039
1040	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1041	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1042	return VERR_INVALID_PARAMETER;
1043	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1044
1045	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1046	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1047	return VERR_INVALID_PARAMETER;
1048	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1049
1050	case VMMR0_DO_INTNET_IF_SEND:
1051	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1052	return VERR_INVALID_PARAMETER;
1053	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1054
1055	case VMMR0_DO_INTNET_IF_WAIT:
1056	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1057	return VERR_INVALID_PARAMETER;
1058	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1059
1060	/*
1061	* For profiling.
1062	*/
1063	case VMMR0_DO_NOP:
1064	case VMMR0_DO_SLOW_NOP:
1065	return VINF_SUCCESS;
1066
1067	/*
1068	* For testing Ring-0 APIs invoked in this environment.
1069	*/
1070	case VMMR0_DO_TESTS:
1071	/** @todo make new test */
1072	return VINF_SUCCESS;
1073
1074
1075	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1076	case VMMR0_DO_TEST_SWITCHER3264:
1077	if (idCpu == NIL_VMCPUID)
1078	return VERR_INVALID_CPU_ID;
1079	return HWACCMR0TestSwitcher3264(pVM);
1080	#endif
1081	default:
1082	/*
1083	* We're returning VERR_NOT_SUPPORT here so we've got something else
1084	* than -1 which the interrupt gate glue code might return.
1085	*/
1086	Log(("operation %#x is not supported\n", enmOperation));
1087	return VERR_NOT_SUPPORTED;
1088	}
1089	}
1090
1091
1092	/**
1093	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1094	*/
1095	typedef struct VMMR0ENTRYEXARGS
1096	{
1097	PVM pVM;
1098	VMCPUID idCpu;
1099	VMMR0OPERATION enmOperation;
1100	PSUPVMMR0REQHDR pReq;
1101	uint64_t u64Arg;
1102	PSUPDRVSESSION pSession;
1103	} VMMR0ENTRYEXARGS;
1104	/** Pointer to a vmmR0EntryExWrapper argument package. */
1105	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1106
1107	/**
1108	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1109	*
1110	* @returns VBox status code.
1111	* @param pvArgs The argument package
1112	*/
1113	static int vmmR0EntryExWrapper(void *pvArgs)
1114	{
1115	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1116	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1117	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1118	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1119	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1120	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1121	}
1122
1123
1124	/**
1125	* The Ring 0 entry point, called by the support library (SUP).
1126	*
1127	* @returns VBox status code.
1128	* @param pVM The VM to operate on.
1129	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1130	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1131	* @param enmOperation Which operation to execute.
1132	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1133	* @param u64Arg Some simple constant argument.
1134	* @param pSession The session of the caller.
1135	* @remarks Assume called with interrupts _enabled_.
1136	*/
1137	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1138	{
1139	/*
1140	* Requests that should only happen on the EMT thread will be
1141	* wrapped in a setjmp so we can assert without causing trouble.
1142	*/
1143	if ( VALID_PTR(pVM)
1144	&& pVM->pVMR0
1145	&& idCpu < pVM->cCpus)
1146	{
1147	switch (enmOperation)
1148	{
1149	/* These might/will be called before VMMR3Init. */
1150	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1151	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1152	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1153	case VMMR0_DO_GMM_FREE_PAGES:
1154	case VMMR0_DO_GMM_BALLOONED_PAGES:
1155	/* On the mac we might not have a valid jmp buf, so check these as well. */
1156	case VMMR0_DO_VMMR0_INIT:
1157	case VMMR0_DO_VMMR0_TERM:
1158	{
1159	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1160
1161	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1162	break;
1163
1164	/** @todo validate this EMT claim... GVM knows. */
1165	VMMR0ENTRYEXARGS Args;
1166	Args.pVM = pVM;
1167	Args.idCpu = idCpu;
1168	Args.enmOperation = enmOperation;
1169	Args.pReq = pReq;
1170	Args.u64Arg = u64Arg;
1171	Args.pSession = pSession;
1172	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1173	}
1174
1175	default:
1176	break;
1177	}
1178	}
1179	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1180	}
1181
1182	/**
1183	* Internal R0 logger worker: Flush logger.
1184	*
1185	* @param pLogger The logger instance to flush.
1186	* @remark This function must be exported!
1187	*/
1188	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1189	{
1190	#ifdef LOG_ENABLED
1191	/*
1192	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1193	* (This is a bit paranoid code.)
1194	*/
1195	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1196	if ( !VALID_PTR(pR0Logger)
1197	\|\| !VALID_PTR(pR0Logger + 1)
1198	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1199	{
1200	# ifdef DEBUG
1201	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1202	# endif
1203	return;
1204	}
1205	if (pR0Logger->fFlushingDisabled)
1206	return; /* quietly */
1207
1208	PVM pVM = pR0Logger->pVM;
1209	if ( !VALID_PTR(pVM)
1210	\|\| pVM->pVMR0 != pVM)
1211	{
1212	# ifdef DEBUG
1213	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1214	# endif
1215	return;
1216	}
1217
1218	PVMCPU pVCpu = VMMGetCpu(pVM);
1219
1220	/*
1221	* Check that the jump buffer is armed.
1222	*/
1223	# ifdef RT_ARCH_X86
1224	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1225	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1226	# else
1227	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1228	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1229	# endif
1230	{
1231	# ifdef DEBUG
1232	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1233	# endif
1234	return;
1235	}
1236	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1237	#endif
1238	}
1239
1240	/**
1241	* Interal R0 logger worker: Custom prefix.
1242	*
1243	* @returns Number of chars written.
1244	*
1245	* @param pLogger The logger instance.
1246	* @param pchBuf The output buffer.
1247	* @param cchBuf The size of the buffer.
1248	* @param pvUser User argument (ignored).
1249	*/
1250	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1251	{
1252	NOREF(pvUser);
1253	#ifdef LOG_ENABLED
1254	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1255	if ( !VALID_PTR(pR0Logger)
1256	\|\| !VALID_PTR(pR0Logger + 1)
1257	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1258	\|\| cchBuf < 2)
1259	return 0;
1260
1261	static const char s_szHex[17] = "0123456789abcdef";
1262	VMCPUID const idCpu = pR0Logger->idCpu;
1263	pchBuf[1] = s_szHex[ idCpu & 15];
1264	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1265
1266	return 2;
1267	#else
1268	return 0;
1269	#endif
1270	}
1271
1272
1273	#ifdef LOG_ENABLED
1274	/**
1275	* Disables flushing of the ring-0 debug log.
1276	*
1277	* @param pVCpu The shared virtual cpu structure.
1278	*/
1279	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1280	{
1281	PVM pVM = pVCpu->pVMR0;
1282	if (pVCpu->vmm.s.pR0LoggerR0)
1283	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1284	}
1285
1286
1287	/**
1288	* Enables flushing of the ring-0 debug log.
1289	*
1290	* @param pVCpu The shared virtual cpu structure.
1291	*/
1292	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1293	{
1294	PVM pVM = pVCpu->pVMR0;
1295	if (pVCpu->vmm.s.pR0LoggerR0)
1296	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1297	}
1298	#endif
1299
1300	/**
1301	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1302	*
1303	* @returns true if the breakpoint should be hit, false if it should be ignored.
1304	*/
1305	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1306	{
1307	#if 0
1308	return true;
1309	#else
1310	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1311	if (pVM)
1312	{
1313	PVMCPU pVCpu = VMMGetCpu(pVM);
1314
1315	if (pVCpu)
1316	{
1317	#ifdef RT_ARCH_X86
1318	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1319	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1320	#else
1321	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1322	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1323	#endif
1324	{
1325	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1326	return RT_FAILURE_NP(rc);
1327	}
1328	}
1329	}
1330	#ifdef RT_OS_LINUX
1331	return true;
1332	#else
1333	return false;
1334	#endif
1335	#endif
1336	}
1337
1338
1339	/**
1340	* Override this so we can push it up to ring-3.
1341	*
1342	* @param pszExpr Expression. Can be NULL.
1343	* @param uLine Location line number.
1344	* @param pszFile Location file name.
1345	* @param pszFunction Location function name.
1346	*/
1347	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1348	{
1349	/*
1350	* To the log.
1351	*/
1352	LogAlways(("\n!!R0-Assertion Failed!!\n"
1353	"Expression: %s\n"
1354	"Location : %s(%d) %s\n",
1355	pszExpr, pszFile, uLine, pszFunction));
1356
1357	/*
1358	* To the global VMM buffer.
1359	*/
1360	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1361	if (pVM)
1362	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1363	"\n!!R0-Assertion Failed!!\n"
1364	"Expression: %s\n"
1365	"Location : %s(%d) %s\n",
1366	pszExpr, pszFile, uLine, pszFunction);
1367
1368	/*
1369	* Continue the normal way.
1370	*/
1371	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1372	}
1373
1374
1375	/**
1376	* Callback for RTLogFormatV which writes to the ring-3 log port.
1377	* See PFNLOGOUTPUT() for details.
1378	*/
1379	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1380	{
1381	for (size_t i = 0; i < cbChars; i++)
1382	LogAlways(("%c", pachChars[i]));
1383
1384	return cbChars;
1385	}
1386
1387
1388	/**
1389	* Override this so we can push it up to ring-3.
1390	*
1391	* @param pszFormat The format string.
1392	* @param va Arguments.
1393	*/
1394	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1395	{
1396	va_list vaCopy;
1397
1398	/*
1399	* Push the message to the logger.
1400	*/
1401	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1402	if (pLog)
1403	{
1404	va_copy(vaCopy, va);
1405	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1406	va_end(vaCopy);
1407	}
1408
1409	/*
1410	* Push it to the global VMM buffer.
1411	*/
1412	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1413	if (pVM)
1414	{
1415	va_copy(vaCopy, va);
1416	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1417	va_end(vaCopy);
1418	}
1419
1420	/*
1421	* Continue the normal way.
1422	*/
1423	RTAssertMsg2V(pszFormat, va);
1424	}
1425

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 29294

Download in other formats: