VMMR0.cpp@ 38707

Last change on this file since 38707 was 37584, checked in by vboxsync, 14 years ago
VMM: Check for VMCPU_FF_PDM_CRITSECT in R0 and RC.
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File size: 53.1 KB

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1	/* $Id: VMMR0.cpp 37584 2011-06-22 09:54:26Z 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/vmm.h>
23	#include <VBox/sup.h>
24	#include <VBox/vmm/trpm.h>
25	#include <VBox/vmm/cpum.h>
26	#include <VBox/vmm/pdmapi.h>
27	#include <VBox/vmm/pgm.h>
28	#include <VBox/vmm/stam.h>
29	#include <VBox/vmm/tm.h>
30	#include "VMMInternal.h"
31	#include <VBox/vmm/vm.h>
32	#ifdef VBOX_WITH_PCI_PASSTHROUGH
33	# include <VBox/vmm/pdmpci.h>
34	#endif
35
36	#include <VBox/vmm/gvmm.h>
37	#include <VBox/vmm/gmm.h>
38	#include <VBox/intnet.h>
39	#include <VBox/vmm/hwaccm.h>
40	#include <VBox/param.h>
41	#include <VBox/err.h>
42	#include <VBox/version.h>
43	#include <VBox/log.h>
44
45	#include <iprt/asm-amd64-x86.h>
46	#include <iprt/assert.h>
47	#include <iprt/crc.h>
48	#include <iprt/mp.h>
49	#include <iprt/once.h>
50	#include <iprt/stdarg.h>
51	#include <iprt/string.h>
52	#include <iprt/thread.h>
53	#include <iprt/timer.h>
54
55	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
56	# pragma intrinsic(_AddressOfReturnAddress)
57	#endif
58
59
60	/*******************************************************************************
61	* Internal Functions *
62	*******************************************************************************/
63	RT_C_DECLS_BEGIN
64	VMMR0DECL(int) ModuleInit(void);
65	VMMR0DECL(void) ModuleTerm(void);
66
67	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
68	extern uint64_t __udivdi3(uint64_t, uint64_t);
69	extern uint64_t __umoddi3(uint64_t, uint64_t);
70	#endif // RT_ARCH_X86 && (RT_OS_SOLARIS \|\| RT_OS_FREEBSD)
71	RT_C_DECLS_END
72
73
74	/*******************************************************************************
75	* Global Variables *
76	*******************************************************************************/
77	/** Drag in necessary library bits.
78	* The runtime lives here (in VMMR0.r0) and VBoxDDR0.r0 links against us. /
79	PFNRT g_VMMGCDeps[] =
80	{
81	(PFNRT)RTCrc32,
82	(PFNRT)RTOnce,
83	#if defined(RT_ARCH_X86) && (defined(RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD))
84	(PFNRT)__udivdi3,
85	(PFNRT)__umoddi3,
86	#endif // RT_ARCH_X86 && (RT_OS_SOLARIS \|\| RT_OS_FREEBSD)
87	NULL
88	};
89
90	#ifdef RT_OS_SOLARIS
91	/* Dependency information for the native solaris loader. */
92	extern "C" { char _depends_on[] = "vboxdrv"; }
93	#endif
94
95
96
97	#if defined(RT_OS_WINDOWS) && defined(RT_ARCH_AMD64)
98	/* Increase the size of the image to work around the refusal of Win64 to
99	* load images in the 0x80000 range.
100	*/
101	static uint64_t u64BloatImage[8192] = {0};
102	#endif
103
104	/**
105	* Initialize the module.
106	* This is called when we're first loaded.
107	*
108	* @returns 0 on success.
109	* @returns VBox status on failure.
110	*/
111	VMMR0DECL(int) ModuleInit(void)
112	{
113	LogFlow(("ModuleInit:\n"));
114
115	/*
116	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
117	*/
118	int rc = GVMMR0Init();
119	if (RT_SUCCESS(rc))
120	{
121	rc = GMMR0Init();
122	if (RT_SUCCESS(rc))
123	{
124	rc = HWACCMR0Init();
125	if (RT_SUCCESS(rc))
126	{
127	rc = PGMRegisterStringFormatTypes();
128	if (RT_SUCCESS(rc))
129	{
130	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
131	rc = PGMR0DynMapInit();
132	#endif
133	if (RT_SUCCESS(rc))
134	{
135	rc = IntNetR0Init();
136	if (RT_SUCCESS(rc))
137	{
138	#ifdef VBOX_WITH_PCI_PASSTHROUGH
139	rc = PciRawR0Init();
140	#endif
141	if (RT_SUCCESS(rc))
142	{
143	rc = CPUMR0ModuleInit();
144	if (RT_SUCCESS(rc))
145	{
146	LogFlow(("ModuleInit: returns success.\n"));
147	return VINF_SUCCESS;
148	}
149
150	/*
151	* Bail out.
152	*/
153	#ifdef VBOX_WITH_PCI_PASSTHROUGH
154	PciRawR0Term();
155	#endif
156	}
157	IntNetR0Term();
158	}
159	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
160	PGMR0DynMapTerm();
161	#endif
162	}
163	PGMDeregisterStringFormatTypes();
164	}
165	HWACCMR0Term();
166	}
167	GMMR0Term();
168	}
169	GVMMR0Term();
170	}
171
172	LogFlow(("ModuleInit: failed %Rrc\n", rc));
173	return rc;
174	}
175
176
177	/**
178	* Terminate the module.
179	* This is called when we're finally unloaded.
180	*/
181	VMMR0DECL(void) ModuleTerm(void)
182	{
183	LogFlow(("ModuleTerm:\n"));
184
185	/*
186	* Terminate the CPUM module (Local APIC cleanup).
187	*/
188	CPUMR0ModuleTerm();
189
190	/*
191	* Terminate the internal network service.
192	*/
193	IntNetR0Term();
194
195	/*
196	* PGM (Darwin), HWACCM and PciRaw global cleanup.
197	*/
198	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
199	PGMR0DynMapTerm();
200	#endif
201	#ifdef VBOX_WITH_PCI_PASSTHROUGH
202	PciRawR0Term();
203	#endif
204	PGMDeregisterStringFormatTypes();
205	HWACCMR0Term();
206
207	/*
208	* Destroy the GMM and GVMM instances.
209	*/
210	GMMR0Term();
211	GVMMR0Term();
212
213	LogFlow(("ModuleTerm: returns\n"));
214	}
215
216
217	/**
218	* Initiates the R0 driver for a particular VM instance.
219	*
220	* @returns VBox status code.
221	*
222	* @param pVM The VM instance in question.
223	* @param uSvnRev The SVN revision of the ring-3 part.
224	* @thread EMT.
225	*/
226	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
227	{
228	/*
229	* Match the SVN revisions.
230	*/
231	if (uSvnRev != VMMGetSvnRev())
232	{
233	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
234	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
235	return VERR_VMM_R0_VERSION_MISMATCH;
236	}
237	if ( !VALID_PTR(pVM)
238	\|\| pVM->pVMR0 != pVM)
239	return VERR_INVALID_PARAMETER;
240
241	#ifdef LOG_ENABLED
242	/*
243	* Register the EMT R0 logger instance for VCPU 0.
244	*/
245	PVMCPU pVCpu = &pVM->aCpus[0];
246
247	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
248	if (pR0Logger)
249	{
250	# if 0 /* testing of the logger. */
251	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
252	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
253	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
254	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
255
256	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
257	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
258	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
259	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
260
261	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
262	LogCom(("vmmR0InitVM: returned successfully from direct logger call.\n"));
263	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
264	LogCom(("vmmR0InitVM: returned successfully from direct flush call.\n"));
265
266	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
267	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
268	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
269	LogCom(("vmmR0InitVM: returned successfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
270	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
271	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
272
273	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
274	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
275
276	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
277	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
278	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
279	# endif
280	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
281	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
282	pR0Logger->fRegistered = true;
283	}
284	#endif /* LOG_ENABLED */
285
286	/*
287	* Check if the host supports high resolution timers or not.
288	*/
289	if ( pVM->vmm.s.fUsePeriodicPreemptionTimers
290	&& !RTTimerCanDoHighResolution())
291	pVM->vmm.s.fUsePeriodicPreemptionTimers = false;
292
293	/*
294	* Initialize the per VM data for GVMM and GMM.
295	*/
296	int rc = GVMMR0InitVM(pVM);
297	// if (RT_SUCCESS(rc))
298	// rc = GMMR0InitPerVMData(pVM);
299	if (RT_SUCCESS(rc))
300	{
301	/*
302	* Init HWACCM, CPUM and PGM (Darwin only).
303	*/
304	rc = HWACCMR0InitVM(pVM);
305	if (RT_SUCCESS(rc))
306	{
307	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
308	if (RT_SUCCESS(rc))
309	{
310	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
311	rc = PGMR0DynMapInitVM(pVM);
312	#endif
313	if (RT_SUCCESS(rc))
314	{
315	#ifdef VBOX_WITH_PCI_PASSTHROUGH
316	rc = PciRawR0InitVM(pVM);
317	#endif
318	if (RT_SUCCESS(rc))
319	{
320	GVMMR0DoneInitVM(pVM);
321	return rc;
322	}
323	}
324
325	/* bail out */
326	}
327	#ifdef VBOX_WITH_PCI_PASSTHROUGH
328	PciRawR0TermVM(pVM);
329	#endif
330	HWACCMR0TermVM(pVM);
331	}
332	}
333
334
335	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
336	return rc;
337	}
338
339
340	/**
341	* Terminates the R0 driver for a particular VM instance.
342	*
343	* This is normally called by ring-3 as part of the VM termination process, but
344	* may alternatively be called during the support driver session cleanup when
345	* the VM object is destroyed (see GVMM).
346	*
347	* @returns VBox status code.
348	*
349	* @param pVM The VM instance in question.
350	* @param pGVM Pointer to the global VM structure. Optional.
351	* @thread EMT or session clean up thread.
352	*/
353	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
354	{
355	#ifdef VBOX_WITH_PCI_PASSTHROUGH
356	PciRawR0TermVM(pVM);
357	#endif
358
359	/*
360	* Tell GVMM what we're up to and check that we only do this once.
361	*/
362	if (GVMMR0DoingTermVM(pVM, pGVM))
363	{
364	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
365	PGMR0DynMapTermVM(pVM);
366	#endif
367	HWACCMR0TermVM(pVM);
368	}
369
370	/*
371	* Deregister the logger.
372	*/
373	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
374	return VINF_SUCCESS;
375	}
376
377
378	#ifdef VBOX_WITH_STATISTICS
379	/**
380	* Record return code statistics
381	* @param pVM The VM handle.
382	* @param pVCpu The VMCPU handle.
383	* @param rc The status code.
384	*/
385	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
386	{
387	/*
388	* Collect statistics.
389	*/
390	switch (rc)
391	{
392	case VINF_SUCCESS:
393	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
394	break;
395	case VINF_EM_RAW_INTERRUPT:
396	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
397	break;
398	case VINF_EM_RAW_INTERRUPT_HYPER:
399	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
400	break;
401	case VINF_EM_RAW_GUEST_TRAP:
402	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
403	break;
404	case VINF_EM_RAW_RING_SWITCH:
405	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
406	break;
407	case VINF_EM_RAW_RING_SWITCH_INT:
408	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
409	break;
410	case VINF_EM_RAW_STALE_SELECTOR:
411	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
412	break;
413	case VINF_EM_RAW_IRET_TRAP:
414	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
415	break;
416	case VINF_IOM_HC_IOPORT_READ:
417	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
418	break;
419	case VINF_IOM_HC_IOPORT_WRITE:
420	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
421	break;
422	case VINF_IOM_HC_MMIO_READ:
423	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
424	break;
425	case VINF_IOM_HC_MMIO_WRITE:
426	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
427	break;
428	case VINF_IOM_HC_MMIO_READ_WRITE:
429	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
430	break;
431	case VINF_PATM_HC_MMIO_PATCH_READ:
432	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
433	break;
434	case VINF_PATM_HC_MMIO_PATCH_WRITE:
435	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
436	break;
437	case VINF_EM_RAW_EMULATE_INSTR:
438	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
439	break;
440	case VINF_EM_RAW_EMULATE_IO_BLOCK:
441	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
442	break;
443	case VINF_PATCH_EMULATE_INSTR:
444	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
445	break;
446	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
447	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
448	break;
449	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
450	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
451	break;
452	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
453	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
454	break;
455	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
456	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
457	break;
458	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
459	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
460	break;
461	case VINF_CSAM_PENDING_ACTION:
462	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
463	break;
464	case VINF_PGM_SYNC_CR3:
465	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
466	break;
467	case VINF_PATM_PATCH_INT3:
468	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
469	break;
470	case VINF_PATM_PATCH_TRAP_PF:
471	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
472	break;
473	case VINF_PATM_PATCH_TRAP_GP:
474	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
475	break;
476	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
477	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
478	break;
479	case VINF_EM_RESCHEDULE_REM:
480	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
481	break;
482	case VINF_EM_RAW_TO_R3:
483	if (VM_FF_ISPENDING(pVM, VM_FF_TM_VIRTUAL_SYNC))
484	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3TMVirt);
485	else if (VM_FF_ISPENDING(pVM, VM_FF_PGM_NEED_HANDY_PAGES))
486	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3HandyPages);
487	else if (VM_FF_ISPENDING(pVM, VM_FF_PDM_QUEUES))
488	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3PDMQueues);
489	else if (VM_FF_ISPENDING(pVM, VM_FF_EMT_RENDEZVOUS))
490	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Rendezvous);
491	else if (VM_FF_ISPENDING(pVM, VM_FF_PDM_DMA))
492	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3DMA);
493	else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TIMER))
494	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Timer);
495	else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_PDM_CRITSECT))
496	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3CritSect);
497	else if (VMCPU_FF_ISPENDING(pVCpu, VMCPU_FF_TO_R3))
498	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
499	else
500	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3Unknown);
501	break;
502
503	case VINF_EM_RAW_TIMER_PENDING:
504	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
505	break;
506	case VINF_EM_RAW_INTERRUPT_PENDING:
507	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
508	break;
509	case VINF_VMM_CALL_HOST:
510	switch (pVCpu->vmm.s.enmCallRing3Operation)
511	{
512	case VMMCALLRING3_PDM_CRIT_SECT_ENTER:
513	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMCritSectEnter);
514	break;
515	case VMMCALLRING3_PDM_LOCK:
516	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
517	break;
518	case VMMCALLRING3_PGM_POOL_GROW:
519	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
520	break;
521	case VMMCALLRING3_PGM_LOCK:
522	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
523	break;
524	case VMMCALLRING3_PGM_MAP_CHUNK:
525	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
526	break;
527	case VMMCALLRING3_PGM_ALLOCATE_HANDY_PAGES:
528	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
529	break;
530	case VMMCALLRING3_REM_REPLAY_HANDLER_NOTIFICATIONS:
531	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
532	break;
533	case VMMCALLRING3_VMM_LOGGER_FLUSH:
534	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
535	break;
536	case VMMCALLRING3_VM_SET_ERROR:
537	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
538	break;
539	case VMMCALLRING3_VM_SET_RUNTIME_ERROR:
540	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
541	break;
542	case VMMCALLRING3_VM_R0_ASSERTION:
543	default:
544	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallRing3);
545	break;
546	}
547	break;
548	case VINF_PATM_DUPLICATE_FUNCTION:
549	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
550	break;
551	case VINF_PGM_CHANGE_MODE:
552	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
553	break;
554	case VINF_PGM_POOL_FLUSH_PENDING:
555	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMFlushPending);
556	break;
557	case VINF_EM_PENDING_REQUEST:
558	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
559	break;
560	case VINF_EM_HWACCM_PATCH_TPR_INSTR:
561	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchTPR);
562	break;
563	default:
564	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
565	break;
566	}
567	}
568	#endif /* VBOX_WITH_STATISTICS */
569
570
571	/**
572	* Unused ring-0 entry point that used to be called from the interrupt gate.
573	*
574	* Will be removed one of the next times we do a major SUPDrv version bump.
575	*
576	* @returns VBox status code.
577	* @param pVM The VM to operate on.
578	* @param enmOperation Which operation to execute.
579	* @param pvArg Argument to the operation.
580	* @remarks Assume called with interrupts disabled.
581	*/
582	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
583	{
584	/*
585	* We're returning VERR_NOT_SUPPORT here so we've got something else
586	* than -1 which the interrupt gate glue code might return.
587	*/
588	Log(("operation %#x is not supported\n", enmOperation));
589	return VERR_NOT_SUPPORTED;
590	}
591
592
593	/**
594	* The Ring 0 entry point, called by the fast-ioctl path.
595	*
596	* @param pVM The VM to operate on.
597	* The return code is stored in pVM->vmm.s.iLastGZRc.
598	* @param idCpu The Virtual CPU ID of the calling EMT.
599	* @param enmOperation Which operation to execute.
600	* @remarks Assume called with interrupts _enabled_.
601	*/
602	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
603	{
604	if (RT_UNLIKELY(idCpu >= pVM->cCpus))
605	return;
606	PVMCPU pVCpu = &pVM->aCpus[idCpu];
607
608	switch (enmOperation)
609	{
610	/*
611	* Switch to GC and run guest raw mode code.
612	* Disable interrupts before doing the world switch.
613	*/
614	case VMMR0_DO_RAW_RUN:
615	{
616	/* Some safety precautions first. */
617	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
618	if (RT_LIKELY( !pVM->vmm.s.fSwitcherDisabled /* hwaccm */
619	&& pVM->cCpus == 1 /* !smp */
620	&& PGMGetHyperCR3(pVCpu)))
621	#else
622	if (RT_LIKELY( !pVM->vmm.s.fSwitcherDisabled
623	&& pVM->cCpus == 1))
624	#endif
625	{
626	/* Disable preemption and update the periodic preemption timer. */
627	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
628	RTThreadPreemptDisable(&PreemptState);
629	RTCPUID idHostCpu = RTMpCpuId();
630	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
631	CPUMR0SetLApic(pVM, idHostCpu);
632	#endif
633	ASMAtomicWriteU32(&pVCpu->idHostCpu, idHostCpu);
634	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
635	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
636
637	/* We might need to disable VT-x if the active switcher turns off paging. */
638	bool fVTxDisabled;
639	int rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
640	if (RT_SUCCESS(rc))
641	{
642	RTCCUINTREG uFlags = ASMIntDisableFlags();
643	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
644
645	TMNotifyStartOfExecution(pVCpu);
646	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
647	pVCpu->vmm.s.iLastGZRc = rc;
648	TMNotifyEndOfExecution(pVCpu);
649
650	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
651
652	/* Re-enable VT-x if previously turned off. */
653	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
654
655	if ( rc == VINF_EM_RAW_INTERRUPT
656	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
657	TRPMR0DispatchHostInterrupt(pVM);
658
659	ASMSetFlags(uFlags);
660
661	#ifdef VBOX_WITH_STATISTICS
662	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
663	vmmR0RecordRC(pVM, pVCpu, rc);
664	#endif
665	}
666	else
667	pVCpu->vmm.s.iLastGZRc = rc;
668	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
669	RTThreadPreemptRestore(&PreemptState);
670	}
671	else
672	{
673	Assert(!pVM->vmm.s.fSwitcherDisabled);
674	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
675	if (pVM->cCpus != 1)
676	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
677	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
678	if (!PGMGetHyperCR3(pVCpu))
679	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
680	#endif
681	}
682	break;
683	}
684
685	/*
686	* Run guest code using the available hardware acceleration technology.
687	*
688	* Disable interrupts before we do anything interesting. On Windows we avoid
689	* this by having the support driver raise the IRQL before calling us, this way
690	* we hope to get away with page faults and later calling into the kernel.
691	*/
692	case VMMR0_DO_HWACC_RUN:
693	{
694	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
695	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
696	RTThreadPreemptDisable(&PreemptState);
697	#elif !defined(RT_OS_WINDOWS)
698	RTCCUINTREG uFlags = ASMIntDisableFlags();
699	#endif
700	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
701	if (pVM->vmm.s.fUsePeriodicPreemptionTimers)
702	GVMMR0SchedUpdatePeriodicPreemptionTimer(pVM, pVCpu->idHostCpu, TMCalcHostTimerFrequency(pVM, pVCpu));
703
704	#ifdef LOG_ENABLED
705	if (pVCpu->idCpu > 0)
706	{
707	/* Lazy registration of ring 0 loggers. */
708	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
709	if ( pR0Logger
710	&& !pR0Logger->fRegistered)
711	{
712	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
713	pR0Logger->fRegistered = true;
714	}
715	}
716	#endif
717	int rc;
718	if (!HWACCMR0SuspendPending())
719	{
720	rc = HWACCMR0Enter(pVM, pVCpu);
721	if (RT_SUCCESS(rc))
722	{
723	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
724	int rc2 = HWACCMR0Leave(pVM, pVCpu);
725	AssertRC(rc2);
726	}
727	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
728	}
729	else
730	{
731	/* System is about to go into suspend mode; go back to ring 3. */
732	rc = VINF_EM_RAW_INTERRUPT;
733	}
734	pVCpu->vmm.s.iLastGZRc = rc;
735
736	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
737	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
738	RTThreadPreemptRestore(&PreemptState);
739	#elif !defined(RT_OS_WINDOWS)
740	ASMSetFlags(uFlags);
741	#endif
742
743	#ifdef VBOX_WITH_STATISTICS
744	vmmR0RecordRC(pVM, pVCpu, rc);
745	#endif
746	/* No special action required for external interrupts, just return. */
747	break;
748	}
749
750	/*
751	* For profiling.
752	*/
753	case VMMR0_DO_NOP:
754	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
755	break;
756
757	/*
758	* Impossible.
759	*/
760	default:
761	AssertMsgFailed(("%#x\n", enmOperation));
762	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
763	break;
764	}
765	}
766
767
768	/**
769	* Validates a session or VM session argument.
770	*
771	* @returns true / false accordingly.
772	* @param pVM The VM argument.
773	* @param pSession The session argument.
774	*/
775	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
776	{
777	/* This must be set! */
778	if (!pSession)
779	return false;
780
781	/* Only one out of the two. */
782	if (pVM && pClaimedSession)
783	return false;
784	if (pVM)
785	pClaimedSession = pVM->pSession;
786	return pClaimedSession == pSession;
787	}
788
789
790	/**
791	* VMMR0EntryEx worker function, either called directly or when ever possible
792	* called thru a longjmp so we can exit safely on failure.
793	*
794	* @returns VBox status code.
795	* @param pVM The VM to operate on.
796	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
797	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
798	* @param enmOperation Which operation to execute.
799	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
800	* The support driver validates this if it's present.
801	* @param u64Arg Some simple constant argument.
802	* @param pSession The session of the caller.
803	* @remarks Assume called with interrupts _enabled_.
804	*/
805	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
806	{
807	/*
808	* Common VM pointer validation.
809	*/
810	if (pVM)
811	{
812	if (RT_UNLIKELY( !VALID_PTR(pVM)
813	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
814	{
815	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
816	return VERR_INVALID_POINTER;
817	}
818	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
819	\|\| pVM->enmVMState > VMSTATE_TERMINATED
820	\|\| pVM->pVMR0 != pVM))
821	{
822	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
823	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
824	return VERR_INVALID_POINTER;
825	}
826
827	if (RT_UNLIKELY(idCpu >= pVM->cCpus && idCpu != NIL_VMCPUID))
828	{
829	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCpus=%u)\n", idCpu, pVM->cCpus);
830	return VERR_INVALID_PARAMETER;
831	}
832	}
833	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
834	{
835	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
836	return VERR_INVALID_PARAMETER;
837	}
838
839
840	switch (enmOperation)
841	{
842	/*
843	* GVM requests
844	*/
845	case VMMR0_DO_GVMM_CREATE_VM:
846	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
847	return VERR_INVALID_PARAMETER;
848	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
849
850	case VMMR0_DO_GVMM_DESTROY_VM:
851	if (pReqHdr \|\| u64Arg)
852	return VERR_INVALID_PARAMETER;
853	return GVMMR0DestroyVM(pVM);
854
855	case VMMR0_DO_GVMM_REGISTER_VMCPU:
856	{
857	if (!pVM)
858	return VERR_INVALID_PARAMETER;
859	return GVMMR0RegisterVCpu(pVM, idCpu);
860	}
861
862	case VMMR0_DO_GVMM_SCHED_HALT:
863	if (pReqHdr)
864	return VERR_INVALID_PARAMETER;
865	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
866
867	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
868	if (pReqHdr \|\| u64Arg)
869	return VERR_INVALID_PARAMETER;
870	return GVMMR0SchedWakeUp(pVM, idCpu);
871
872	case VMMR0_DO_GVMM_SCHED_POKE:
873	if (pReqHdr \|\| u64Arg)
874	return VERR_INVALID_PARAMETER;
875	return GVMMR0SchedPoke(pVM, idCpu);
876
877	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
878	if (u64Arg)
879	return VERR_INVALID_PARAMETER;
880	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
881
882	case VMMR0_DO_GVMM_SCHED_POLL:
883	if (pReqHdr \|\| u64Arg > 1)
884	return VERR_INVALID_PARAMETER;
885	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
886
887	case VMMR0_DO_GVMM_QUERY_STATISTICS:
888	if (u64Arg)
889	return VERR_INVALID_PARAMETER;
890	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
891
892	case VMMR0_DO_GVMM_RESET_STATISTICS:
893	if (u64Arg)
894	return VERR_INVALID_PARAMETER;
895	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
896
897	/*
898	* Initialize the R0 part of a VM instance.
899	*/
900	case VMMR0_DO_VMMR0_INIT:
901	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
902
903	/*
904	* Terminate the R0 part of a VM instance.
905	*/
906	case VMMR0_DO_VMMR0_TERM:
907	return VMMR0TermVM(pVM, NULL);
908
909	/*
910	* Attempt to enable hwacc mode and check the current setting.
911	*/
912	case VMMR0_DO_HWACC_ENABLE:
913	return HWACCMR0EnableAllCpus(pVM);
914
915	/*
916	* Setup the hardware accelerated session.
917	*/
918	case VMMR0_DO_HWACC_SETUP_VM:
919	return HWACCMR0SetupVM(pVM);
920
921	/*
922	* Switch to RC to execute Hypervisor function.
923	*/
924	case VMMR0_DO_CALL_HYPERVISOR:
925	{
926	int rc;
927	bool fVTxDisabled;
928
929	/* Safety precaution as HWACCM can disable the switcher. */
930	Assert(!pVM->vmm.s.fSwitcherDisabled);
931	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
932	return VERR_NOT_SUPPORTED;
933
934	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
935	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
936	return VERR_PGM_NO_CR3_SHADOW_ROOT;
937	#endif
938
939	RTCCUINTREG fFlags = ASMIntDisableFlags();
940
941	#ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
942	RTCPUID idHostCpu = RTMpCpuId();
943	CPUMR0SetLApic(pVM, idHostCpu);
944	#endif
945
946	/* We might need to disable VT-x if the active switcher turns off paging. */
947	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
948	if (RT_FAILURE(rc))
949	return rc;
950
951	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
952
953	/* Re-enable VT-x if previously turned off. */
954	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
955
956	/** @todo dispatch interrupts? */
957	ASMSetFlags(fFlags);
958	return rc;
959	}
960
961	/*
962	* PGM wrappers.
963	*/
964	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
965	if (idCpu == NIL_VMCPUID)
966	return VERR_INVALID_CPU_ID;
967	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
968
969	case VMMR0_DO_PGM_ALLOCATE_LARGE_HANDY_PAGE:
970	if (idCpu == NIL_VMCPUID)
971	return VERR_INVALID_CPU_ID;
972	return PGMR0PhysAllocateLargeHandyPage(pVM, &pVM->aCpus[idCpu]);
973
974	case VMMR0_DO_PGM_PHYS_SETUP_IOMMU:
975	if (idCpu != 0)
976	return VERR_INVALID_CPU_ID;
977	return PGMR0PhysSetupIommu(pVM);
978
979	/*
980	* GMM wrappers.
981	*/
982	case VMMR0_DO_GMM_INITIAL_RESERVATION:
983	if (u64Arg)
984	return VERR_INVALID_PARAMETER;
985	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
986
987	case VMMR0_DO_GMM_UPDATE_RESERVATION:
988	if (u64Arg)
989	return VERR_INVALID_PARAMETER;
990	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
991
992	case VMMR0_DO_GMM_ALLOCATE_PAGES:
993	if (u64Arg)
994	return VERR_INVALID_PARAMETER;
995	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
996
997	case VMMR0_DO_GMM_FREE_PAGES:
998	if (u64Arg)
999	return VERR_INVALID_PARAMETER;
1000	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
1001
1002	case VMMR0_DO_GMM_FREE_LARGE_PAGE:
1003	if (u64Arg)
1004	return VERR_INVALID_PARAMETER;
1005	return GMMR0FreeLargePageReq(pVM, idCpu, (PGMMFREELARGEPAGEREQ)pReqHdr);
1006
1007	case VMMR0_DO_GMM_QUERY_HYPERVISOR_MEM_STATS:
1008	if (u64Arg)
1009	return VERR_INVALID_PARAMETER;
1010	return GMMR0QueryHypervisorMemoryStatsReq(pVM, (PGMMMEMSTATSREQ)pReqHdr);
1011
1012	case VMMR0_DO_GMM_QUERY_MEM_STATS:
1013	if (idCpu == NIL_VMCPUID)
1014	return VERR_INVALID_CPU_ID;
1015	if (u64Arg)
1016	return VERR_INVALID_PARAMETER;
1017	return GMMR0QueryMemoryStatsReq(pVM, idCpu, (PGMMMEMSTATSREQ)pReqHdr);
1018
1019	case VMMR0_DO_GMM_BALLOONED_PAGES:
1020	if (u64Arg)
1021	return VERR_INVALID_PARAMETER;
1022	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
1023
1024	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
1025	if (u64Arg)
1026	return VERR_INVALID_PARAMETER;
1027	return GMMR0MapUnmapChunkReq(pVM, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
1028
1029	case VMMR0_DO_GMM_SEED_CHUNK:
1030	if (pReqHdr)
1031	return VERR_INVALID_PARAMETER;
1032	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
1033
1034	case VMMR0_DO_GMM_REGISTER_SHARED_MODULE:
1035	if (idCpu == NIL_VMCPUID)
1036	return VERR_INVALID_CPU_ID;
1037	if (u64Arg)
1038	return VERR_INVALID_PARAMETER;
1039	return GMMR0RegisterSharedModuleReq(pVM, idCpu, (PGMMREGISTERSHAREDMODULEREQ)pReqHdr);
1040
1041	case VMMR0_DO_GMM_UNREGISTER_SHARED_MODULE:
1042	if (idCpu == NIL_VMCPUID)
1043	return VERR_INVALID_CPU_ID;
1044	if (u64Arg)
1045	return VERR_INVALID_PARAMETER;
1046	return GMMR0UnregisterSharedModuleReq(pVM, idCpu, (PGMMUNREGISTERSHAREDMODULEREQ)pReqHdr);
1047
1048	case VMMR0_DO_GMM_RESET_SHARED_MODULES:
1049	if (idCpu == NIL_VMCPUID)
1050	return VERR_INVALID_CPU_ID;
1051	if ( u64Arg
1052	\|\| pReqHdr)
1053	return VERR_INVALID_PARAMETER;
1054	return GMMR0ResetSharedModules(pVM, idCpu);
1055
1056	#ifdef VBOX_WITH_PAGE_SHARING
1057	case VMMR0_DO_GMM_CHECK_SHARED_MODULES:
1058	{
1059	if (idCpu == NIL_VMCPUID)
1060	return VERR_INVALID_CPU_ID;
1061	if ( u64Arg
1062	\|\| pReqHdr)
1063	return VERR_INVALID_PARAMETER;
1064
1065	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1066	Assert(pVCpu->hNativeThreadR0 == RTThreadNativeSelf());
1067
1068	# ifdef DEBUG_sandervl
1069	/* 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). */
1070	/* Todo: this can have bad side effects for unexpected jumps back to r3. */
1071	int rc = GMMR0CheckSharedModulesStart(pVM);
1072	if (rc == VINF_SUCCESS)
1073	{
1074	rc = vmmR0CallRing3SetJmp(&pVCpu->vmm.s.CallRing3JmpBufR0, GMMR0CheckSharedModules, pVM, pVCpu); /* this may resume code. */
1075	Assert( rc == VINF_SUCCESS
1076	\|\| (rc == VINF_VMM_CALL_HOST && pVCpu->vmm.s.enmCallRing3Operation == VMMCALLRING3_VMM_LOGGER_FLUSH));
1077	GMMR0CheckSharedModulesEnd(pVM);
1078	}
1079	# else
1080	int rc = GMMR0CheckSharedModules(pVM, pVCpu);
1081	# endif
1082	return rc;
1083	}
1084	#endif
1085
1086	#if defined(VBOX_STRICT) && HC_ARCH_BITS == 64
1087	case VMMR0_DO_GMM_FIND_DUPLICATE_PAGE:
1088	{
1089	if (u64Arg)
1090	return VERR_INVALID_PARAMETER;
1091	return GMMR0FindDuplicatePageReq(pVM, (PGMMFINDDUPLICATEPAGEREQ)pReqHdr);
1092	}
1093	#endif
1094
1095	/*
1096	* A quick GCFGM mock-up.
1097	*/
1098	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
1099	case VMMR0_DO_GCFGM_SET_VALUE:
1100	case VMMR0_DO_GCFGM_QUERY_VALUE:
1101	{
1102	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1103	return VERR_INVALID_PARAMETER;
1104	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
1105	if (pReq->Hdr.cbReq != sizeof(*pReq))
1106	return VERR_INVALID_PARAMETER;
1107	int rc;
1108	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
1109	{
1110	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1111	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1112	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
1113	}
1114	else
1115	{
1116	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1117	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
1118	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
1119	}
1120	return rc;
1121	}
1122
1123	/*
1124	* PDM Wrappers.
1125	*/
1126	case VMMR0_DO_PDM_DRIVER_CALL_REQ_HANDLER:
1127	{
1128	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1129	return VERR_INVALID_PARAMETER;
1130	return PDMR0DriverCallReqHandler(pVM, (PPDMDRIVERCALLREQHANDLERREQ)pReqHdr);
1131	}
1132
1133	case VMMR0_DO_PDM_DEVICE_CALL_REQ_HANDLER:
1134	{
1135	if (!pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
1136	return VERR_INVALID_PARAMETER;
1137	return PDMR0DeviceCallReqHandler(pVM, (PPDMDEVICECALLREQHANDLERREQ)pReqHdr);
1138	}
1139
1140	/*
1141	* Requests to the internal networking service.
1142	*/
1143	case VMMR0_DO_INTNET_OPEN:
1144	{
1145	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
1146	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1147	return VERR_INVALID_PARAMETER;
1148	return IntNetR0OpenReq(pSession, pReq);
1149	}
1150
1151	case VMMR0_DO_INTNET_IF_CLOSE:
1152	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1153	return VERR_INVALID_PARAMETER;
1154	return IntNetR0IfCloseReq(pSession, (PINTNETIFCLOSEREQ)pReqHdr);
1155
1156	case VMMR0_DO_INTNET_IF_GET_BUFFER_PTRS:
1157	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETBUFFERPTRSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1158	return VERR_INVALID_PARAMETER;
1159	return IntNetR0IfGetBufferPtrsReq(pSession, (PINTNETIFGETBUFFERPTRSREQ)pReqHdr);
1160
1161	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
1162	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1163	return VERR_INVALID_PARAMETER;
1164	return IntNetR0IfSetPromiscuousModeReq(pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
1165
1166	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
1167	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1168	return VERR_INVALID_PARAMETER;
1169	return IntNetR0IfSetMacAddressReq(pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1170
1171	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1172	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1173	return VERR_INVALID_PARAMETER;
1174	return IntNetR0IfSetActiveReq(pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1175
1176	case VMMR0_DO_INTNET_IF_SEND:
1177	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1178	return VERR_INVALID_PARAMETER;
1179	return IntNetR0IfSendReq(pSession, (PINTNETIFSENDREQ)pReqHdr);
1180
1181	case VMMR0_DO_INTNET_IF_WAIT:
1182	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1183	return VERR_INVALID_PARAMETER;
1184	return IntNetR0IfWaitReq(pSession, (PINTNETIFWAITREQ)pReqHdr);
1185
1186	case VMMR0_DO_INTNET_IF_ABORT_WAIT:
1187	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1188	return VERR_INVALID_PARAMETER;
1189	return IntNetR0IfAbortWaitReq(pSession, (PINTNETIFABORTWAITREQ)pReqHdr);
1190
1191	#ifdef VBOX_WITH_PCI_PASSTHROUGH
1192	/*
1193	* Requests to host PCI driver service.
1194	*/
1195	case VMMR0_DO_PCIRAW_REQ:
1196	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PPCIRAWSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1197	return VERR_INVALID_PARAMETER;
1198	return PciRawR0ProcessReq(pSession, pVM, (PPCIRAWSENDREQ)pReqHdr);
1199	#endif
1200	/*
1201	* For profiling.
1202	*/
1203	case VMMR0_DO_NOP:
1204	case VMMR0_DO_SLOW_NOP:
1205	return VINF_SUCCESS;
1206
1207	/*
1208	* For testing Ring-0 APIs invoked in this environment.
1209	*/
1210	case VMMR0_DO_TESTS:
1211	/** @todo make new test */
1212	return VINF_SUCCESS;
1213
1214
1215	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1216	case VMMR0_DO_TEST_SWITCHER3264:
1217	if (idCpu == NIL_VMCPUID)
1218	return VERR_INVALID_CPU_ID;
1219	return HWACCMR0TestSwitcher3264(pVM);
1220	#endif
1221	default:
1222	/*
1223	* We're returning VERR_NOT_SUPPORT here so we've got something else
1224	* than -1 which the interrupt gate glue code might return.
1225	*/
1226	Log(("operation %#x is not supported\n", enmOperation));
1227	return VERR_NOT_SUPPORTED;
1228	}
1229	}
1230
1231
1232	/**
1233	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1234	*/
1235	typedef struct VMMR0ENTRYEXARGS
1236	{
1237	PVM pVM;
1238	VMCPUID idCpu;
1239	VMMR0OPERATION enmOperation;
1240	PSUPVMMR0REQHDR pReq;
1241	uint64_t u64Arg;
1242	PSUPDRVSESSION pSession;
1243	} VMMR0ENTRYEXARGS;
1244	/** Pointer to a vmmR0EntryExWrapper argument package. */
1245	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1246
1247	/**
1248	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1249	*
1250	* @returns VBox status code.
1251	* @param pvArgs The argument package
1252	*/
1253	static int vmmR0EntryExWrapper(void *pvArgs)
1254	{
1255	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1256	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1257	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1258	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1259	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1260	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1261	}
1262
1263
1264	/**
1265	* The Ring 0 entry point, called by the support library (SUP).
1266	*
1267	* @returns VBox status code.
1268	* @param pVM The VM to operate on.
1269	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1270	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1271	* @param enmOperation Which operation to execute.
1272	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1273	* @param u64Arg Some simple constant argument.
1274	* @param pSession The session of the caller.
1275	* @remarks Assume called with interrupts _enabled_.
1276	*/
1277	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1278	{
1279	/*
1280	* Requests that should only happen on the EMT thread will be
1281	* wrapped in a setjmp so we can assert without causing trouble.
1282	*/
1283	if ( VALID_PTR(pVM)
1284	&& pVM->pVMR0
1285	&& idCpu < pVM->cCpus)
1286	{
1287	switch (enmOperation)
1288	{
1289	/* These might/will be called before VMMR3Init. */
1290	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1291	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1292	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1293	case VMMR0_DO_GMM_FREE_PAGES:
1294	case VMMR0_DO_GMM_BALLOONED_PAGES:
1295	/* On the mac we might not have a valid jmp buf, so check these as well. */
1296	case VMMR0_DO_VMMR0_INIT:
1297	case VMMR0_DO_VMMR0_TERM:
1298	{
1299	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1300
1301	if (!pVCpu->vmm.s.CallRing3JmpBufR0.pvSavedStack)
1302	break;
1303
1304	/** @todo validate this EMT claim... GVM knows. */
1305	VMMR0ENTRYEXARGS Args;
1306	Args.pVM = pVM;
1307	Args.idCpu = idCpu;
1308	Args.enmOperation = enmOperation;
1309	Args.pReq = pReq;
1310	Args.u64Arg = u64Arg;
1311	Args.pSession = pSession;
1312	return vmmR0CallRing3SetJmpEx(&pVCpu->vmm.s.CallRing3JmpBufR0, vmmR0EntryExWrapper, &Args);
1313	}
1314
1315	default:
1316	break;
1317	}
1318	}
1319	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1320	}
1321
1322	/**
1323	* Internal R0 logger worker: Flush logger.
1324	*
1325	* @param pLogger The logger instance to flush.
1326	* @remark This function must be exported!
1327	*/
1328	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1329	{
1330	#ifdef LOG_ENABLED
1331	/*
1332	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1333	* (This is a bit paranoid code.)
1334	*/
1335	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1336	if ( !VALID_PTR(pR0Logger)
1337	\|\| !VALID_PTR(pR0Logger + 1)
1338	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1339	{
1340	# ifdef DEBUG
1341	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1342	# endif
1343	return;
1344	}
1345	if (pR0Logger->fFlushingDisabled)
1346	return; /* quietly */
1347
1348	PVM pVM = pR0Logger->pVM;
1349	if ( !VALID_PTR(pVM)
1350	\|\| pVM->pVMR0 != pVM)
1351	{
1352	# ifdef DEBUG
1353	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1354	# endif
1355	return;
1356	}
1357
1358	PVMCPU pVCpu = VMMGetCpu(pVM);
1359	if (pVCpu)
1360	{
1361	/*
1362	* Check that the jump buffer is armed.
1363	*/
1364	# ifdef RT_ARCH_X86
1365	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.eip
1366	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1367	# else
1368	if ( !pVCpu->vmm.s.CallRing3JmpBufR0.rip
1369	\|\| pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1370	# endif
1371	{
1372	# ifdef DEBUG
1373	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1374	# endif
1375	return;
1376	}
1377	VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VMM_LOGGER_FLUSH, 0);
1378	}
1379	# ifdef DEBUG
1380	else
1381	SUPR0Printf("vmmR0LoggerFlush: invalid VCPU context!\n");
1382	# endif
1383	#endif
1384	}
1385
1386	/**
1387	* Internal R0 logger worker: Custom prefix.
1388	*
1389	* @returns Number of chars written.
1390	*
1391	* @param pLogger The logger instance.
1392	* @param pchBuf The output buffer.
1393	* @param cchBuf The size of the buffer.
1394	* @param pvUser User argument (ignored).
1395	*/
1396	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1397	{
1398	NOREF(pvUser);
1399	#ifdef LOG_ENABLED
1400	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1401	if ( !VALID_PTR(pR0Logger)
1402	\|\| !VALID_PTR(pR0Logger + 1)
1403	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1404	\|\| cchBuf < 2)
1405	return 0;
1406
1407	static const char s_szHex[17] = "0123456789abcdef";
1408	VMCPUID const idCpu = pR0Logger->idCpu;
1409	pchBuf[1] = s_szHex[ idCpu & 15];
1410	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1411
1412	return 2;
1413	#else
1414	return 0;
1415	#endif
1416	}
1417
1418	#ifdef LOG_ENABLED
1419
1420	/**
1421	* Disables flushing of the ring-0 debug log.
1422	*
1423	* @param pVCpu The shared virtual cpu structure.
1424	*/
1425	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1426	{
1427	PVM pVM = pVCpu->pVMR0;
1428	if (pVCpu->vmm.s.pR0LoggerR0)
1429	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1430	}
1431
1432
1433	/**
1434	* Enables flushing of the ring-0 debug log.
1435	*
1436	* @param pVCpu The shared virtual cpu structure.
1437	*/
1438	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1439	{
1440	PVM pVM = pVCpu->pVMR0;
1441	if (pVCpu->vmm.s.pR0LoggerR0)
1442	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1443	}
1444
1445	#endif /* LOG_ENABLED */
1446
1447	/**
1448	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1449	*
1450	* @returns true if the breakpoint should be hit, false if it should be ignored.
1451	*/
1452	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1453	{
1454	#if 0
1455	return true;
1456	#else
1457	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1458	if (pVM)
1459	{
1460	PVMCPU pVCpu = VMMGetCpu(pVM);
1461
1462	if (pVCpu)
1463	{
1464	#ifdef RT_ARCH_X86
1465	if ( pVCpu->vmm.s.CallRing3JmpBufR0.eip
1466	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1467	#else
1468	if ( pVCpu->vmm.s.CallRing3JmpBufR0.rip
1469	&& !pVCpu->vmm.s.CallRing3JmpBufR0.fInRing3Call)
1470	#endif
1471	{
1472	int rc = VMMRZCallRing3(pVM, pVCpu, VMMCALLRING3_VM_R0_ASSERTION, 0);
1473	return RT_FAILURE_NP(rc);
1474	}
1475	}
1476	}
1477	#ifdef RT_OS_LINUX
1478	return true;
1479	#else
1480	return false;
1481	#endif
1482	#endif
1483	}
1484
1485
1486	/**
1487	* Override this so we can push it up to ring-3.
1488	*
1489	* @param pszExpr Expression. Can be NULL.
1490	* @param uLine Location line number.
1491	* @param pszFile Location file name.
1492	* @param pszFunction Location function name.
1493	*/
1494	DECLEXPORT(void) RTCALL RTAssertMsg1Weak(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1495	{
1496	/*
1497	* To the log.
1498	*/
1499	LogAlways(("\n!!R0-Assertion Failed!!\n"
1500	"Expression: %s\n"
1501	"Location : %s(%d) %s\n",
1502	pszExpr, pszFile, uLine, pszFunction));
1503
1504	/*
1505	* To the global VMM buffer.
1506	*/
1507	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1508	if (pVM)
1509	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1510	"\n!!R0-Assertion Failed!!\n"
1511	"Expression: %s\n"
1512	"Location : %s(%d) %s\n",
1513	pszExpr, pszFile, uLine, pszFunction);
1514
1515	/*
1516	* Continue the normal way.
1517	*/
1518	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1519	}
1520
1521
1522	/**
1523	* Callback for RTLogFormatV which writes to the ring-3 log port.
1524	* See PFNLOGOUTPUT() for details.
1525	*/
1526	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1527	{
1528	for (size_t i = 0; i < cbChars; i++)
1529	LogAlways(("%c", pachChars[i]));
1530
1531	return cbChars;
1532	}
1533
1534
1535	/**
1536	* Override this so we can push it up to ring-3.
1537	*
1538	* @param pszFormat The format string.
1539	* @param va Arguments.
1540	*/
1541	DECLEXPORT(void) RTCALL RTAssertMsg2WeakV(const char *pszFormat, va_list va)
1542	{
1543	va_list vaCopy;
1544
1545	/*
1546	* Push the message to the logger.
1547	*/
1548	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1549	if (pLog)
1550	{
1551	va_copy(vaCopy, va);
1552	RTLogFormatV(rtLogOutput, pLog, pszFormat, vaCopy);
1553	va_end(vaCopy);
1554	}
1555
1556	/*
1557	* Push it to the global VMM buffer.
1558	*/
1559	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1560	if (pVM)
1561	{
1562	va_copy(vaCopy, va);
1563	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, vaCopy);
1564	va_end(vaCopy);
1565	}
1566
1567	/*
1568	* Continue the normal way.
1569	*/
1570	RTAssertMsg2V(pszFormat, va);
1571	}
1572

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 38707

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