VMMR0.cpp@ 34244

Last change on this file since 34244 was 33935, checked in by vboxsync, 14 years ago
VMM: mask all Local APIC interrupt vectors which are set up to NMI mode during world switch (raw mode only)
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File size: 51.2 KB

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1	/* $Id: VMMR0.cpp 33935 2010-11-10 15:37:02Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2010 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/crc.h>
45	#include <iprt/mp.h>
46	#include <iprt/once.h>
47	#include <iprt/stdarg.h>
48	#include <iprt/string.h>
49	#include <iprt/thread.h>
50	#include <iprt/timer.h>
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	(PFNRT)RTOnce
75	};
76
77
78	#if defined(RT_OS_WINDOWS) && defined(RT_ARCH_AMD64)
79	/* Increase the size of the image to work around the refusal of Win64 to
80	* load images in the 0x80000 range.
81	*/
82	static uint64_t u64BloatImage[8192] = {0};
83	#endif
84
85	/**
86	* Initialize the module.
87	* This is called when we're first loaded.
88	*
89	* @returns 0 on success.
90	* @returns VBox status on failure.
91	*/
92	VMMR0DECL(int) ModuleInit(void)
93	{
94	LogFlow(("ModuleInit:\n"));
95
96	/*
97	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
98	*/
99	int rc = GVMMR0Init();
100	if (RT_SUCCESS(rc))
101	{
102	rc = GMMR0Init();
103	if (RT_SUCCESS(rc))
104	{
105	rc = HWACCMR0Init();
106	if (RT_SUCCESS(rc))
107	{
108	rc = PGMRegisterStringFormatTypes();
109	if (RT_SUCCESS(rc))
110	{
111	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
112	rc = PGMR0DynMapInit();
113	#endif
114	if (RT_SUCCESS(rc))
115	{
116	rc = IntNetR0Init();
117	if (RT_SUCCESS(rc))
118	{
119	rc = CPUMR0ModuleInit();
120	if (RT_SUCCESS(rc))
121	{
122	LogFlow(("ModuleInit: returns success.\n"));
123	return VINF_SUCCESS;
124	}
125	}
126
127	/* bail out */
128	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
129	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
130	PGMR0DynMapTerm();
131	#endif
132	}
133	PGMDeregisterStringFormatTypes();
134	}
135	HWACCMR0Term();
136	}
137	GMMR0Term();
138	}
139	GVMMR0Term();
140	}
141
142	LogFlow(("ModuleInit: failed %Rrc\n", rc));
143	return rc;
144	}
145
146
147	/**
148	* Terminate the module.
149	* This is called when we're finally unloaded.
150	*/
151	VMMR0DECL(void) ModuleTerm(void)
152	{
153	LogFlow(("ModuleTerm:\n"));
154
155	/*
156	* Terminate the CPUM module (Local APIC cleanup).
157	*/
158	CPUMR0ModuleTerm();
159
160	/*
161	* Terminate the internal network service.
162	*/
163	IntNetR0Term();
164
165	/*
166	* PGM (Darwin) and HWACCM global cleanup.
167	*/
168	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
169	PGMR0DynMapTerm();
170	#endif
171	PGMDeregisterStringFormatTypes();
172	HWACCMR0Term();
173
174	/*
175	* Destroy the GMM and GVMM instances.
176	*/
177	GMMR0Term();
178	GVMMR0Term();
179
180	LogFlow(("ModuleTerm: returns\n"));
181	}
182
183
184	/**
185	* Initiates the R0 driver for a particular VM instance.
186	*
187	* @returns VBox status code.
188	*
189	* @param pVM The VM instance in question.
190	* @param uSvnRev The SVN revision of the ring-3 part.
191	* @thread EMT.
192	*/
193	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
194	{
195	/*
196	* Match the SVN revisions.
197	*/
198	if (uSvnRev != VMMGetSvnRev())
199	{
200	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
201	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
202	return VERR_VERSION_MISMATCH;
203	}
204	if ( !VALID_PTR(pVM)
205	\|\| pVM->pVMR0 != pVM)
206	return VERR_INVALID_PARAMETER;
207
208	#ifdef LOG_ENABLED
209	/*
210	* Register the EMT R0 logger instance for VCPU 0.
211	*/
212	PVMCPU pVCpu = &pVM->aCpus[0];
213
214	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
215	if (pR0Logger)
216	{
217	# if 0 /* testing of the logger. */
218	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
219	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
220	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
221	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
222
223	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
224	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
225	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
226	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
227
228	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
229	LogCom(("vmmR0InitVM: returned successfully from direct logger call.\n"));
230	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
231	LogCom(("vmmR0InitVM: returned successfully from direct flush call.\n"));
232
233	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
234	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
235	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
236	LogCom(("vmmR0InitVM: returned successfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
237	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
238	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
239
240	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
241	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
242
243	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
244	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
245	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
246	# endif
247	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
248	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
249	pR0Logger->fRegistered = true;
250	}
251	#endif /* LOG_ENABLED */
252
253	/*
254	* Check if the host supports high resolution timers or not.
255	*/
256	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
257	&& !RTTimerCanDoHighResolution())
258	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
259
260	/*
261	* Initialize the per VM data for GVMM and GMM.
262	*/
263	int rc = GVMMR0InitVM(pVM);
264	// if (RT_SUCCESS(rc))
265	// rc = GMMR0InitPerVMData(pVM);
266	if (RT_SUCCESS(rc))
267	{
268	/*
269	* Init HWACCM, CPUM and PGM (Darwin only).
270	*/
271	rc = HWACCMR0InitVM(pVM);
272	if (RT_SUCCESS(rc))
273	{
274	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
275	if (RT_SUCCESS(rc))
276	{
277	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
278	rc = PGMR0DynMapInitVM(pVM);
279	#endif
280	if (RT_SUCCESS(rc))
281	{
282	GVMMR0DoneInitVM(pVM);
283	return rc;
284	}
285
286	/* bail out */
287	}
288	HWACCMR0TermVM(pVM);
289	}
290	}
291	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
292	return rc;
293	}
294
295
296	/**
297	* Terminates the R0 driver for a particular VM instance.
298	*
299	* This is normally called by ring-3 as part of the VM termination process, but
300	* may alternatively be called during the support driver session cleanup when
301	* the VM object is destroyed (see GVMM).
302	*
303	* @returns VBox status code.
304	*
305	* @param pVM The VM instance in question.
306	* @param pGVM Pointer to the global VM structure. Optional.
307	* @thread EMT or session clean up thread.
308	*/
309	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
310	{
311	/*
312	* Tell GVMM what we're up to and check that we only do this once.
313	*/
314	if (GVMMR0DoingTermVM(pVM, pGVM))
315	{
316	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
317	PGMR0DynMapTermVM(pVM);
318	#endif
319	HWACCMR0TermVM(pVM);
320	}
321
322	/*
323	* Deregister the logger.
324	*/
325	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
326	return VINF_SUCCESS;
327	}
328
329
330	#ifdef VBOX_WITH_STATISTICS
331	/**
332	* Record return code statistics
333	* @param pVM The VM handle.
334	* @param pVCpu The VMCPU handle.
335	* @param rc The status code.
336	*/
337	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
338	{
339	/*
340	* Collect statistics.
341	*/
342	switch (rc)
343	{
344	case VINF_SUCCESS:
345	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
346	break;
347	case VINF_EM_RAW_INTERRUPT:
348	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
349	break;
350	case VINF_EM_RAW_INTERRUPT_HYPER:
351	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
352	break;
353	case VINF_EM_RAW_GUEST_TRAP:
354	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
355	break;
356	case VINF_EM_RAW_RING_SWITCH:
357	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
358	break;
359	case VINF_EM_RAW_RING_SWITCH_INT:
360	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
361	break;
362	case VINF_EM_RAW_STALE_SELECTOR:
363	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
364	break;
365	case VINF_EM_RAW_IRET_TRAP:
366	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
367	break;
368	case VINF_IOM_HC_IOPORT_READ:
369	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
370	break;
371	case VINF_IOM_HC_IOPORT_WRITE:
372	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
373	break;
374	case VINF_IOM_HC_MMIO_READ:
375	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
376	break;
377	case VINF_IOM_HC_MMIO_WRITE:
378	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
379	break;
380	case VINF_IOM_HC_MMIO_READ_WRITE:
381	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
382	break;
383	case VINF_PATM_HC_MMIO_PATCH_READ:
384	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
385	break;
386	case VINF_PATM_HC_MMIO_PATCH_WRITE:
387	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
388	break;
389	case VINF_EM_RAW_EMULATE_INSTR:
390	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
391	break;
392	case VINF_EM_RAW_EMULATE_IO_BLOCK:
393	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
394	break;
395	case VINF_PATCH_EMULATE_INSTR:
396	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
397	break;
398	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
399	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
400	break;
401	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
402	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
403	break;
404	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
405	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
406	break;
407	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
408	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
409	break;
410	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
411	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
412	break;
413	case VINF_CSAM_PENDING_ACTION:
414	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
415	break;
416	case VINF_PGM_SYNC_CR3:
417	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
418	break;
419	case VINF_PATM_PATCH_INT3:
420	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
421	break;
422	case VINF_PATM_PATCH_TRAP_PF:
423	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
424	break;
425	case VINF_PATM_PATCH_TRAP_GP:
426	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
427	break;
428	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
429	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
430	break;
431	case VINF_EM_RESCHEDULE_REM:
432	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
433	break;
434	case VINF_EM_RAW_TO_R3:
435	if (VM_FF_ISPENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
436	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
437	else
438	if (VM_FF_ISPENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
439	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
440	else
441	if (VM_FF_ISPENDING(pVM, VM_FF_PDM_QUEUES))
442	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
443	else
444	if (VM_FF_ISPENDING(pVM, VM_FF_EMT_RENDEZVOUS))
445	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
446	else
447	if (VM_FF_ISPENDING(pVM, VM_FF_PDM_DMA))
448	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
449	else
450	if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TIMER))
451	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
452	else
453	if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
454	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
455	else
456	if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TO_R3))
457	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
458	else
459	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
460	break;
461
462	case VINF_EM_RAW_TIMER_PENDING:
463	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
464	break;
465	case VINF_EM_RAW_INTERRUPT_PENDING:
466	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
467	break;
468	case VINF_VMM_CALL_HOST:
469	switch (pVCpu->vmm.s.enmCallRing3Operation)
470	{
471	case VMMCALLRING3_PDM_LOCK:
472	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
473	break;
474	case VMMCALLRING3_PGM_POOL_GROW:
475	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
476	break;
477	case VMMCALLRING3_PGM_LOCK:
478	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
479	break;
480	case VMMCALLRING3_PGM_MAP_CHUNK:
481	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
482	break;
483	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
484	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
485	break;
486	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
487	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
488	break;
489	case VMMCALLRING3_VMM_LOGGER_FLUSH:
490	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
491	break;
492	case VMMCALLRING3_VM_SET_ERROR:
493	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
494	break;
495	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
496	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
497	break;
498	case VMMCALLRING3_VM_R0_ASSERTION:
499	default:
500	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
501	break;
502	}
503	break;
504	case VINF_PATM_DUPLICATE_FUNCTION:
505	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
506	break;
507	case VINF_PGM_CHANGE_MODE:
508	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
509	break;
510	case VINF_PGM_POOL_FLUSH_PENDING:
511	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
512	break;
513	case VINF_EM_PENDING_REQUEST:
514	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
515	break;
516	case VINF_EM_HWACCM_PATCH_TPR_INSTR:
517	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
518	break;
519	default:
520	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
521	break;
522	}
523	}
524	#endif /* VBOX_WITH_STATISTICS */
525
526
527	/**
528	* Unused ring-0 entry point that used to be called from the interrupt gate.
529	*
530	* Will be removed one of the next times we do a major SUPDrv version bump.
531	*
532	* @returns VBox status code.
533	* @param pVM The VM to operate on.
534	* @param enmOperation Which operation to execute.
535	* @param pvArg Argument to the operation.
536	* @remarks Assume called with interrupts disabled.
537	*/
538	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
539	{
540	/*
541	* We're returning VERR_NOT_SUPPORT here so we've got something else
542	* than -1 which the interrupt gate glue code might return.
543	*/
544	Log(("operation %#x is not supported\n", enmOperation));
545	return VERR_NOT_SUPPORTED;
546	}
547
548
549	/**
550	* The Ring 0 entry point, called by the fast-ioctl path.
551	*
552	* @param pVM The VM to operate on.
553	* The return code is stored in pVM->vmm.s.iLastGZRc.
554	* @param idCpu The Virtual CPU ID of the calling EMT.
555	* @param enmOperation Which operation to execute.
556	* @remarks Assume called with interrupts _enabled_.
557	*/
558	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
559	{
560	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
561	return;
562	PVMCPU pVCpu = &pVM->aCpus[idCpu];
563
564	switch (enmOperation)
565	{
566	/*
567	* Switch to GC and run guest raw mode code.
568	* Disable interrupts before doing the world switch.
569	*/
570	case VMMR0_DO_RAW_RUN:
571	{
572	/* Some safety precautions first. */
573	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
574	if (RT_LIKELY( !pVM->vmm.s.fSwitcherDisabled /* hwaccm */
575	&& pVM->cCpus == 1 /* !smp */
576	&& PGMGetHyperCR3(pVCpu)))
577	#else
578	if (RT_LIKELY( !pVM->vmm.s.fSwitcherDisabled
579	&& pVM->cCpus == 1))
580	#endif
581	{
582	/* Disable preemption and update the periodic preemption timer. */
583	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
584	RTThreadPreemptDisable(&PreemptState);
585	RTCPUID idHostCpu = RTMpCpuId();
586	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
587	CPUMR0SetLApic(pVM, idHostCpu);
588	#endif
589	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
590	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
591	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
592
593	/* We might need to disable VT-x if the active switcher turns off paging. */
594	bool fVTxDisabled;
595	int rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
596	if (RT_SUCCESS(rc))
597	{
598	RTCCUINTREG uFlags = ASMIntDisableFlags();
599	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
600
601	TMNotifyStartOfExecution(pVCpu);
602	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
603	pVCpu->vmm.s.iLastGZRc = rc;
604	TMNotifyEndOfExecution(pVCpu);
605
606	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
607
608	/* Re-enable VT-x if previously turned off. */
609	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
610
611	if ( rc == VINF_EM_RAW_INTERRUPT
612	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
613	TRPMR0DispatchHostInterrupt(pVM);
614
615	ASMSetFlags(uFlags);
616
617	#ifdef VBOX_WITH_STATISTICS
618	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
619	vmmR0RecordRC(pVM, pVCpu, rc);
620	#endif
621	}
622	else
623	pVCpu->vmm.s.iLastGZRc = rc;
624	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
625	RTThreadPreemptRestore(&PreemptState);
626	}
627	else
628	{
629	Assert(!pVM->vmm.s.fSwitcherDisabled);
630	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
631	if (pVM->cCpus != 1)
632	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
633	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
634	if (!PGMGetHyperCR3(pVCpu))
635	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
636	#endif
637	}
638	break;
639	}
640
641	/*
642	* Run guest code using the available hardware acceleration technology.
643	*
644	* Disable interrupts before we do anything interesting. On Windows we avoid
645	* this by having the support driver raise the IRQL before calling us, this way
646	* we hope to get away with page faults and later calling into the kernel.
647	*/
648	case VMMR0_DO_HWACC_RUN:
649	{
650	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
651	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
652	RTThreadPreemptDisable(&PreemptState);
653	#elif !defined(RT_OS_WINDOWS)
654	RTCCUINTREG uFlags = ASMIntDisableFlags();
655	#endif
656	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
657	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
658	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
659
660	#ifdef LOG_ENABLED
661	if (pVCpu->idCpu > 0)
662	{
663	/* Lazy registration of ring 0 loggers. */
664	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
665	if ( pR0Logger
666	&& !pR0Logger->fRegistered)
667	{
668	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
669	pR0Logger->fRegistered = true;
670	}
671	}
672	#endif
673	int rc;
674	if (!HWACCMR0SuspendPending())
675	{
676	rc = HWACCMR0Enter(pVM, pVCpu);
677	if (RT_SUCCESS(rc))
678	{
679	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
680	int rc2 = HWACCMR0Leave(pVM, pVCpu);
681	AssertRC(rc2);
682	}
683	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
684	}
685	else
686	{
687	/* System is about to go into suspend mode; go back to ring 3. */
688	rc = VINF_EM_RAW_INTERRUPT;
689	}
690	pVCpu->vmm.s.iLastGZRc = rc;
691
692	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
693	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
694	RTThreadPreemptRestore(&PreemptState);
695	#elif !defined(RT_OS_WINDOWS)
696	ASMSetFlags(uFlags);
697	#endif
698
699	#ifdef VBOX_WITH_STATISTICS
700	vmmR0RecordRC(pVM, pVCpu, rc);
701	#endif
702	/* No special action required for external interrupts, just return. */
703	break;
704	}
705
706	/*
707	* For profiling.
708	*/
709	case VMMR0_DO_NOP:
710	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
711	break;
712
713	/*
714	* Impossible.
715	*/
716	default:
717	AssertMsgFailed(("%#x\n", enmOperation));
718	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
719	break;
720	}
721	}
722
723
724	/**
725	* Validates a session or VM session argument.
726	*
727	* @returns true / false accordingly.
728	* @param pVM The VM argument.
729	* @param pSession The session argument.
730	*/
731	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
732	{
733	/* This must be set! */
734	if (!pSession)
735	return false;
736
737	/* Only one out of the two. */
738	if (pVM && pClaimedSession)
739	return false;
740	if (pVM)
741	pClaimedSession = pVM->pSession;
742	return pClaimedSession == pSession;
743	}
744
745
746	/**
747	* VMMR0EntryEx worker function, either called directly or when ever possible
748	* called thru a longjmp so we can exit safely on failure.
749	*
750	* @returns VBox status code.
751	* @param pVM The VM to operate on.
752	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
753	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
754	* @param enmOperation Which operation to execute.
755	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
756	* The support driver validates this if it's present.
757	* @param u64Arg Some simple constant argument.
758	* @param pSession The session of the caller.
759	* @remarks Assume called with interrupts _enabled_.
760	*/
761	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
762	{
763	/*
764	* Common VM pointer validation.
765	*/
766	if (pVM)
767	{
768	if (RT_UNLIKELY( !VALID_PTR(pVM)
769	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
770	{
771	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
772	return VERR_INVALID_POINTER;
773	}
774	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
775	\|\| pVM->enmVMState > VMSTATE_TERMINATED
776	\|\| pVM->pVMR0 != pVM))
777	{
778	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
779	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
780	return VERR_INVALID_POINTER;
781	}
782
783	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
784	{
785	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
786	return VERR_INVALID_PARAMETER;
787	}
788	}
789	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
790	{
791	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
792	return VERR_INVALID_PARAMETER;
793	}
794
795
796	switch (enmOperation)
797	{
798	/*
799	* GVM requests
800	*/
801	case VMMR0_DO_GVMM_CREATE_VM:
802	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
803	return VERR_INVALID_PARAMETER;
804	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
805
806	case VMMR0_DO_GVMM_DESTROY_VM:
807	if (pReqHdr \|\| u64Arg)
808	return VERR_INVALID_PARAMETER;
809	return GVMMR0DestroyVM(pVM);
810
811	case VMMR0_DO_GVMM_REGISTER_VMCPU:
812	{
813	if (!pVM)
814	return VERR_INVALID_PARAMETER;
815	return GVMMR0RegisterVCpu(pVM, idCpu);
816	}
817
818	case VMMR0_DO_GVMM_SCHED_HALT:
819	if (pReqHdr)
820	return VERR_INVALID_PARAMETER;
821	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
822
823	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
824	if (pReqHdr \|\| u64Arg)
825	return VERR_INVALID_PARAMETER;
826	return GVMMR0SchedWakeUp(pVM, idCpu);
827
828	case VMMR0_DO_GVMM_SCHED_POKE:
829	if (pReqHdr \|\| u64Arg)
830	return VERR_INVALID_PARAMETER;
831	return GVMMR0SchedPoke(pVM, idCpu);
832
833	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
834	if (u64Arg)
835	return VERR_INVALID_PARAMETER;
836	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
837
838	case VMMR0_DO_GVMM_SCHED_POLL:
839	if (pReqHdr \|\| u64Arg > 1)
840	return VERR_INVALID_PARAMETER;
841	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
842
843	case VMMR0_DO_GVMM_QUERY_STATISTICS:
844	if (u64Arg)
845	return VERR_INVALID_PARAMETER;
846	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
847
848	case VMMR0_DO_GVMM_RESET_STATISTICS:
849	if (u64Arg)
850	return VERR_INVALID_PARAMETER;
851	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
852
853	/*
854	* Initialize the R0 part of a VM instance.
855	*/
856	case VMMR0_DO_VMMR0_INIT:
857	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
858
859	/*
860	* Terminate the R0 part of a VM instance.
861	*/
862	case VMMR0_DO_VMMR0_TERM:
863	return VMMR0TermVM(pVM, NULL);
864
865	/*
866	* Attempt to enable hwacc mode and check the current setting.
867	*/
868	case VMMR0_DO_HWACC_ENABLE:
869	return HWACCMR0EnableAllCpus(pVM);
870
871	/*
872	* Setup the hardware accelerated session.
873	*/
874	case VMMR0_DO_HWACC_SETUP_VM:
875	{
876	RTCCUINTREG fFlags = ASMIntDisableFlags();
877	int rc = HWACCMR0SetupVM(pVM);
878	ASMSetFlags(fFlags);
879	return rc;
880	}
881
882	/*
883	* Switch to RC to execute Hypervisor function.
884	*/
885	case VMMR0_DO_CALL_HYPERVISOR:
886	{
887	int rc;
888	bool fVTxDisabled;
889
890	/* Safety precaution as HWACCM can disable the switcher. */
891	Assert(!pVM->vmm.s.fSwitcherDisabled);
892	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
893	return VERR_NOT_SUPPORTED;
894
895	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
896	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
897	return VERR_PGM_NO_CR3_SHADOW_ROOT;
898	#endif
899
900	RTCCUINTREG fFlags = ASMIntDisableFlags();
901
902	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
903	RTCPUID idHostCpu = RTMpCpuId();
904	CPUMR0SetLApic(pVM, idHostCpu);
905	#endif
906
907	/* We might need to disable VT-x if the active switcher turns off paging. */
908	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
909	if (RT_FAILURE(rc))
910	return rc;
911
912	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
913
914	/* Re-enable VT-x if previously turned off. */
915	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
916
917	/** @todo dispatch interrupts? */
918	ASMSetFlags(fFlags);
919	return rc;
920	}
921
922	/*
923	* PGM wrappers.
924	*/
925	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
926	if (idCpu == NIL_VMCPUID)
927	return VERR_INVALID_CPU_ID;
928	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
929
930	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
931	if (idCpu == NIL_VMCPUID)
932	return VERR_INVALID_CPU_ID;
933	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
934
935	/*
936	* GMM wrappers.
937	*/
938	case VMMR0_DO_GMM_INITIAL_RESERVATION:
939	if (u64Arg)
940	return VERR_INVALID_PARAMETER;
941	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
942
943	case VMMR0_DO_GMM_UPDATE_RESERVATION:
944	if (u64Arg)
945	return VERR_INVALID_PARAMETER;
946	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
947
948	case VMMR0_DO_GMM_ALLOCATE_PAGES:
949	if (u64Arg)
950	return VERR_INVALID_PARAMETER;
951	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
952
953	case VMMR0_DO_GMM_FREE_PAGES:
954	if (u64Arg)
955	return VERR_INVALID_PARAMETER;
956	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
957
958	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
959	if (u64Arg)
960	return VERR_INVALID_PARAMETER;
961	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
962
963	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
964	if (u64Arg)
965	return VERR_INVALID_PARAMETER;
966	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
967
968	case VMMR0_DO_GMM_QUERY_MEM_STATS:
969	if (idCpu == NIL_VMCPUID)
970	return VERR_INVALID_CPU_ID;
971	if (u64Arg)
972	return VERR_INVALID_PARAMETER;
973	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
974
975	case VMMR0_DO_GMM_BALLOONED_PAGES:
976	if (u64Arg)
977	return VERR_INVALID_PARAMETER;
978	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
979
980	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
981	if (u64Arg)
982	return VERR_INVALID_PARAMETER;
983	return GMMR0MapUnmapChunkReq(pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
984
985	case VMMR0_DO_GMM_SEED_CHUNK:
986	if (pReqHdr)
987	return VERR_INVALID_PARAMETER;
988	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
989
990	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
991	if (idCpu == NIL_VMCPUID)
992	return VERR_INVALID_CPU_ID;
993	if (u64Arg)
994	return VERR_INVALID_PARAMETER;
995	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
996
997	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
998	if (idCpu == NIL_VMCPUID)
999	return VERR_INVALID_CPU_ID;
1000	if (u64Arg)
1001	return VERR_INVALID_PARAMETER;
1002	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1003
1004	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1005	if (idCpu == NIL_VMCPUID)
1006	return VERR_INVALID_CPU_ID;
1007	if ( u64Arg
1008	\|\| pReqHdr)
1009	return VERR_INVALID_PARAMETER;
1010	return GMMR0ResetSharedModules(pVM, idCpu);
1011
1012	#ifdef VBOX_WITH_PAGE_SHARING
1013	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1014	{
1015	if (idCpu == NIL_VMCPUID)
1016	return VERR_INVALID_CPU_ID;
1017	if ( u64Arg
1018	\|\| pReqHdr)
1019	return VERR_INVALID_PARAMETER;
1020
1021	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1022	Assert(pVCpu->hNativeThreadR0 == RTThreadNativeSelf());
1023
1024	# ifdef DEBUG_sandervl
1025	/* Make sure that log flushes can jump back to ring-3; annoying to get an incomplete log (this is risky though as the code doesn't take this into account). */
1026	/* Todo: this can have bad side effects for unexpected jumps back to r3. */
1027	int rc = GMMR0CheckSharedModulesStart(pVM);
1028	if (rc == VINF_SUCCESS)
1029	{
1030	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, GMMR0CheckSharedModules, pVM, pVCpu); /* this may resume code. */
1031	Assert( rc == VINF_SUCCESS
1032	\|\| (rc == VINF_VMM_CALL_HOST && pVCpu->vmm.s.enmCallRing3Operation == VMMCALLRING3_VMM_LOGGER_FLUSH));
1033	GMMR0CheckSharedModulesEnd(pVM);
1034	}
1035	# else
1036	int rc = GMMR0CheckSharedModules(pVM, pVCpu);
1037	# endif
1038	return rc;
1039	}
1040	#endif
1041
1042	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1043	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1044	{
1045	if (u64Arg)
1046	return VERR_INVALID_PARAMETER;
1047	return GMMR0FindDuplicatePageReq(pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1048	}
1049	#endif
1050
1051	/*
1052	* A quick GCFGM mock-up.
1053	*/
1054	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1055	case VMMR0_DO_GCFGM_SET_VALUE:
1056	case VMMR0_DO_GCFGM_QUERY_VALUE:
1057	{
1058	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1059	return VERR_INVALID_PARAMETER;
1060	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1061	if (pReq->Hdr.cbReq != sizeof(*pReq))
1062	return VERR_INVALID_PARAMETER;
1063	int rc;
1064	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1065	{
1066	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1067	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1068	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1069	}
1070	else
1071	{
1072	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1073	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1074	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1075	}
1076	return rc;
1077	}
1078
1079	/*
1080	* PDM Wrappers.
1081	*/
1082	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1083	{
1084	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1085	return VERR_INVALID_PARAMETER;
1086	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1087	}
1088
1089	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1090	{
1091	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1092	return VERR_INVALID_PARAMETER;
1093	return PDMR0DeviceCallReqHandler(pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1094	}
1095
1096	/*
1097	* Requests to the internal networking service.
1098	*/
1099	case VMMR0_DO_INTNET_OPEN:
1100	{
1101	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1102	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1103	return VERR_INVALID_PARAMETER;
1104	return IntNetR0OpenReq(pSession, pReq);
1105	}
1106
1107	case VMMR0_DO_INTNET_IF_CLOSE:
1108	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1109	return VERR_INVALID_PARAMETER;
1110	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1111
1112	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1113	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1114	return VERR_INVALID_PARAMETER;
1115	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1116
1117	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1118	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1119	return VERR_INVALID_PARAMETER;
1120	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1121
1122	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1123	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1124	return VERR_INVALID_PARAMETER;
1125	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1126
1127	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1128	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1129	return VERR_INVALID_PARAMETER;
1130	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1131
1132	case VMMR0_DO_INTNET_IF_SEND:
1133	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1134	return VERR_INVALID_PARAMETER;
1135	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1136
1137	case VMMR0_DO_INTNET_IF_WAIT:
1138	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1139	return VERR_INVALID_PARAMETER;
1140	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1141
1142	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
1143	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1144	return VERR_INVALID_PARAMETER;
1145	return IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
1146
1147	/*
1148	* For profiling.
1149	*/
1150	case VMMR0_DO_NOP:
1151	case VMMR0_DO_SLOW_NOP:
1152	return VINF_SUCCESS;
1153
1154	/*
1155	* For testing Ring-0 APIs invoked in this environment.
1156	*/
1157	case VMMR0_DO_TESTS:
1158	/** @todo make new test */
1159	return VINF_SUCCESS;
1160
1161
1162	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1163	case VMMR0_DO_TEST_SWITCHER3264:
1164	if (idCpu == NIL_VMCPUID)
1165	return VERR_INVALID_CPU_ID;
1166	return HWACCMR0TestSwitcher3264(pVM);
1167	#endif
1168	default:
1169	/*
1170	* We're returning VERR_NOT_SUPPORT here so we've got something else
1171	* than -1 which the interrupt gate glue code might return.
1172	*/
1173	Log(("operation %#x is not supported\n", enmOperation));
1174	return VERR_NOT_SUPPORTED;
1175	}
1176	}
1177
1178
1179	/**
1180	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1181	*/
1182	typedef struct VMMR0ENTRYEXARGS
1183	{
1184	PVM pVM;
1185	VMCPUID idCpu;
1186	VMMR0OPERATION enmOperation;
1187	PSUPVMMR0REQHDR pReq;
1188	uint64_t u64Arg;
1189	PSUPDRVSESSION pSession;
1190	} VMMR0ENTRYEXARGS;
1191	/** Pointer to a vmmR0EntryExWrapper argument package. */
1192	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1193
1194	/**
1195	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1196	*
1197	* @returns VBox status code.
1198	* @param pvArgs The argument package
1199	*/
1200	static int vmmR0EntryExWrapper(void *pvArgs)
1201	{
1202	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1203	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1204	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1205	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1206	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1207	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1208	}
1209
1210
1211	/**
1212	* The Ring 0 entry point, called by the support library (SUP).
1213	*
1214	* @returns VBox status code.
1215	* @param pVM The VM to operate on.
1216	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1217	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1218	* @param enmOperation Which operation to execute.
1219	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1220	* @param u64Arg Some simple constant argument.
1221	* @param pSession The session of the caller.
1222	* @remarks Assume called with interrupts _enabled_.
1223	*/
1224	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1225	{
1226	/*
1227	* Requests that should only happen on the EMT thread will be
1228	* wrapped in a setjmp so we can assert without causing trouble.
1229	*/
1230	if ( VALID_PTR(pVM)
1231	&& pVM->pVMR0
1232	&& idCpu < pVM->cCpus)
1233	{
1234	switch (enmOperation)
1235	{
1236	/* These might/will be called before VMMR3Init. */
1237	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1238	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1239	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1240	case VMMR0_DO_GMM_FREE_PAGES:
1241	case VMMR0_DO_GMM_BALLOONED_PAGES:
1242	/* On the mac we might not have a valid jmp buf, so check these as well. */
1243	case VMMR0_DO_VMMR0_INIT:
1244	case VMMR0_DO_VMMR0_TERM:
1245	{
1246	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1247
1248	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1249	break;
1250
1251	/** @todo validate this EMT claim... GVM knows. */
1252	VMMR0ENTRYEXARGS Args;
1253	Args.pVM = pVM;
1254	Args.idCpu = idCpu;
1255	Args.enmOperation = enmOperation;
1256	Args.pReq = pReq;
1257	Args.u64Arg = u64Arg;
1258	Args.pSession = pSession;
1259	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1260	}
1261
1262	default:
1263	break;
1264	}
1265	}
1266	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1267	}
1268
1269	/**
1270	* Internal R0 logger worker: Flush logger.
1271	*
1272	* @param pLogger The logger instance to flush.
1273	* @remark This function must be exported!
1274	*/
1275	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1276	{
1277	#ifdef LOG_ENABLED
1278	/*
1279	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1280	* (This is a bit paranoid code.)
1281	*/
1282	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1283	if ( !VALID_PTR(pR0Logger)
1284	\|\| !VALID_PTR(pR0Logger + 1)
1285	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1286	{
1287	# ifdef DEBUG
1288	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1289	# endif
1290	return;
1291	}
1292	if (pR0Logger->fFlushingDisabled)
1293	return; /* quietly */
1294
1295	PVM pVM = pR0Logger->pVM;
1296	if ( !VALID_PTR(pVM)
1297	\|\| pVM->pVMR0 != pVM)
1298	{
1299	# ifdef DEBUG
1300	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1301	# endif
1302	return;
1303	}
1304
1305	PVMCPU pVCpu = VMMGetCpu(pVM);
1306	if (pVCpu)
1307	{
1308	/*
1309	* Check that the jump buffer is armed.
1310	*/
1311	# ifdef RT_ARCH_X86
1312	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1313	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1314	# else
1315	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1316	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1317	# endif
1318	{
1319	# ifdef DEBUG
1320	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1321	# endif
1322	return;
1323	}
1324	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1325	}
1326	# ifdef DEBUG
1327	else
1328	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
1329	# endif
1330	#endif
1331	}
1332
1333	/**
1334	* Internal R0 logger worker: Custom prefix.
1335	*
1336	* @returns Number of chars written.
1337	*
1338	* @param pLogger The logger instance.
1339	* @param pchBuf The output buffer.
1340	* @param cchBuf The size of the buffer.
1341	* @param pvUser User argument (ignored).
1342	*/
1343	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1344	{
1345	NOREF(pvUser);
1346	#ifdef LOG_ENABLED
1347	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1348	if ( !VALID_PTR(pR0Logger)
1349	\|\| !VALID_PTR(pR0Logger + 1)
1350	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1351	\|\| cchBuf < 2)
1352	return 0;
1353
1354	static const char s_szHex[17] = "0123456789abcdef";
1355	VMCPUID const idCpu = pR0Logger->idCpu;
1356	pchBuf[1] = s_szHex[ idCpu & 15];
1357	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1358
1359	return 2;
1360	#else
1361	return 0;
1362	#endif
1363	}
1364
1365	#ifdef LOG_ENABLED
1366
1367	/**
1368	* Disables flushing of the ring-0 debug log.
1369	*
1370	* @param pVCpu The shared virtual cpu structure.
1371	*/
1372	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1373	{
1374	PVM pVM = pVCpu->pVMR0;
1375	if (pVCpu->vmm.s.pR0LoggerR0)
1376	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1377	}
1378
1379
1380	/**
1381	* Enables flushing of the ring-0 debug log.
1382	*
1383	* @param pVCpu The shared virtual cpu structure.
1384	*/
1385	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1386	{
1387	PVM pVM = pVCpu->pVMR0;
1388	if (pVCpu->vmm.s.pR0LoggerR0)
1389	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1390	}
1391
1392	#endif /* LOG_ENABLED */
1393
1394	/**
1395	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1396	*
1397	* @returns true if the breakpoint should be hit, false if it should be ignored.
1398	*/
1399	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1400	{
1401	#if 0
1402	return true;
1403	#else
1404	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1405	if (pVM)
1406	{
1407	PVMCPU pVCpu = VMMGetCpu(pVM);
1408
1409	if (pVCpu)
1410	{
1411	#ifdef RT_ARCH_X86
1412	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1413	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1414	#else
1415	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1416	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1417	#endif
1418	{
1419	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1420	return RT_FAILURE_NP(rc);
1421	}
1422	}
1423	}
1424	#ifdef RT_OS_LINUX
1425	return true;
1426	#else
1427	return false;
1428	#endif
1429	#endif
1430	}
1431
1432
1433	/**
1434	* Override this so we can push it up to ring-3.
1435	*
1436	* @param pszExpr Expression. Can be NULL.
1437	* @param uLine Location line number.
1438	* @param pszFile Location file name.
1439	* @param pszFunction Location function name.
1440	*/
1441	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1442	{
1443	/*
1444	* To the log.
1445	*/
1446	LogAlways(("\n!!R0-Assertion Failed!!\n"
1447	"Expression: %s\n"
1448	"Location : %s(%d) %s\n",
1449	pszExpr, pszFile, uLine, pszFunction));
1450
1451	/*
1452	* To the global VMM buffer.
1453	*/
1454	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1455	if (pVM)
1456	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1457	"\n!!R0-Assertion Failed!!\n"
1458	"Expression: %s\n"
1459	"Location : %s(%d) %s\n",
1460	pszExpr, pszFile, uLine, pszFunction);
1461
1462	/*
1463	* Continue the normal way.
1464	*/
1465	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1466	}
1467
1468
1469	/**
1470	* Callback for RTLogFormatV which writes to the ring-3 log port.
1471	* See PFNLOGOUTPUT() for details.
1472	*/
1473	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1474	{
1475	for (size_t i = 0; i < cbChars; i++)
1476	LogAlways(("%c", pachChars[i]));
1477
1478	return cbChars;
1479	}
1480
1481
1482	/**
1483	* Override this so we can push it up to ring-3.
1484	*
1485	* @param pszFormat The format string.
1486	* @param va Arguments.
1487	*/
1488	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1489	{
1490	va_list vaCopy;
1491
1492	/*
1493	* Push the message to the logger.
1494	*/
1495	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1496	if (pLog)
1497	{
1498	va_copy(vaCopy, va);
1499	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1500	va_end(vaCopy);
1501	}
1502
1503	/*
1504	* Push it to the global VMM buffer.
1505	*/
1506	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1507	if (pVM)
1508	{
1509	va_copy(vaCopy, va);
1510	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1511	va_end(vaCopy);
1512	}
1513
1514	/*
1515	* Continue the normal way.
1516	*/
1517	RTAssertMsg2V(pszFormat, va);
1518	}
1519

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 34244

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