VMMR0.cpp@ 19454

Last change on this file since 19454 was 19454, checked in by vboxsync, 16 years ago
VMM++: More on poking. Fixed broken R0 stats (wrong way of calling into VMMR0), use NIL_VMCPUID instead of 0 to VMMR0EntryEx when it is supposed to be irrellevant. Use VMCPUID. Allow for and check NIL_VMCPUID. Fixed a few missing/wrong idCpu checks (paranoia mostly).
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 44.2 KB

Line
1	/* $Id: VMMR0.cpp 19454 2009-05-06 19:20:18Z vboxsync $ */
2	/** @file
3	* VMM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_VMM
26	#include <VBox/vmm.h>
27	#include <VBox/sup.h>
28	#include <VBox/trpm.h>
29	#include <VBox/cpum.h>
30	#include <VBox/pgm.h>
31	#include <VBox/stam.h>
32	#include <VBox/tm.h>
33	#include "VMMInternal.h"
34	#include <VBox/vm.h>
35	#include <VBox/gvmm.h>
36	#include <VBox/gmm.h>
37	#include <VBox/intnet.h>
38	#include <VBox/hwaccm.h>
39	#include <VBox/param.h>
40
41	#include <VBox/err.h>
42	#include <VBox/version.h>
43	#include <VBox/log.h>
44	#include <iprt/assert.h>
45	#include <iprt/stdarg.h>
46	#include <iprt/mp.h>
47	#include <iprt/string.h>
48
49	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
50	# pragma intrinsic(_AddressOfReturnAddress)
51	#endif
52
53
54	/*******************************************************************************
55	* Internal Functions *
56	*******************************************************************************/
57	__BEGIN_DECLS
58	VMMR0DECL(int) ModuleInit(void);
59	VMMR0DECL(void) ModuleTerm(void);
60	__END_DECLS
61
62
63	/*******************************************************************************
64	* Global Variables *
65	*******************************************************************************/
66	/** Pointer to the internal networking service instance. */
67	PINTNET g_pIntNet = 0;
68
69
70	/**
71	* Initialize the module.
72	* This is called when we're first loaded.
73	*
74	* @returns 0 on success.
75	* @returns VBox status on failure.
76	*/
77	VMMR0DECL(int) ModuleInit(void)
78	{
79	LogFlow(("ModuleInit:\n"));
80
81	/*
82	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
83	*/
84	int rc = GVMMR0Init();
85	if (RT_SUCCESS(rc))
86	{
87	rc = GMMR0Init();
88	if (RT_SUCCESS(rc))
89	{
90	rc = HWACCMR0Init();
91	if (RT_SUCCESS(rc))
92	{
93	rc = PGMRegisterStringFormatTypes();
94	if (RT_SUCCESS(rc))
95	{
96	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
97	rc = PGMR0DynMapInit();
98	#endif
99	if (RT_SUCCESS(rc))
100	{
101	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
102	g_pIntNet = NULL;
103	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
104	rc = INTNETR0Create(&g_pIntNet);
105	if (RT_SUCCESS(rc))
106	{
107	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
108	return VINF_SUCCESS;
109	}
110
111	/* bail out */
112	g_pIntNet = NULL;
113	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
114	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
115	PGMR0DynMapTerm();
116	#endif
117	}
118	PGMDeregisterStringFormatTypes();
119	}
120	HWACCMR0Term();
121	}
122	GMMR0Term();
123	}
124	GVMMR0Term();
125	}
126
127	LogFlow(("ModuleInit: failed %Rrc\n", rc));
128	return rc;
129	}
130
131
132	/**
133	* Terminate the module.
134	* This is called when we're finally unloaded.
135	*/
136	VMMR0DECL(void) ModuleTerm(void)
137	{
138	LogFlow(("ModuleTerm:\n"));
139
140	/*
141	* Destroy the internal networking instance.
142	*/
143	if (g_pIntNet)
144	{
145	INTNETR0Destroy(g_pIntNet);
146	g_pIntNet = NULL;
147	}
148
149	/*
150	* PGM (Darwin) and HWACCM global cleanup.
151	* Destroy the GMM and GVMM instances.
152	*/
153	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
154	PGMR0DynMapTerm();
155	#endif
156	PGMDeregisterStringFormatTypes();
157	HWACCMR0Term();
158
159	GMMR0Term();
160	GVMMR0Term();
161
162	LogFlow(("ModuleTerm: returns\n"));
163	}
164
165
166	/**
167	* Initaties the R0 driver for a particular VM instance.
168	*
169	* @returns VBox status code.
170	*
171	* @param pVM The VM instance in question.
172	* @param uSvnRev The SVN revision of the ring-3 part.
173	* @thread EMT.
174	*/
175	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
176	{
177	/*
178	* Match the SVN revisions.
179	*/
180	if (uSvnRev != VMMGetSvnRev())
181	{
182	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
183	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
184	return VERR_VERSION_MISMATCH;
185	}
186	if ( !VALID_PTR(pVM)
187	\|\| pVM->pVMR0 != pVM)
188	return VERR_INVALID_PARAMETER;
189
190	/*
191	* Register the EMT R0 logger instance.
192	*/
193	PVMMR0LOGGER pR0Logger = pVM->vmm.s.pR0LoggerR0;
194	if (pR0Logger)
195	{
196	#if 0 /* testing of the logger. */
197	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
198	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
199	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
200	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
201
202	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
203	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
204	RTLogSetDefaultInstanceThread(NULL, 0);
205	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
206
207	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
208	LogCom(("vmmR0InitVM: returned succesfully from direct logger call.\n"));
209	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
210	LogCom(("vmmR0InitVM: returned succesfully from direct flush call.\n"));
211
212	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
213	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
214	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
215	LogCom(("vmmR0InitVM: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
216	RTLogSetDefaultInstanceThread(NULL, 0);
217	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
218
219	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
220	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
221
222	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
223	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
224	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
225	#endif
226	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
227	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
228	}
229
230	/*
231	* Initialize the per VM data for GVMM and GMM.
232	*/
233	int rc = GVMMR0InitVM(pVM);
234	// if (RT_SUCCESS(rc))
235	// rc = GMMR0InitPerVMData(pVM);
236	if (RT_SUCCESS(rc))
237	{
238	/*
239	* Init HWACCM, CPUM and PGM (Darwin only).
240	*/
241	rc = HWACCMR0InitVM(pVM);
242	if (RT_SUCCESS(rc))
243	{
244	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
245	if (RT_SUCCESS(rc))
246	{
247	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
248	rc = PGMR0DynMapInitVM(pVM);
249	#endif
250	if (RT_SUCCESS(rc))
251	{
252	GVMMR0DoneInitVM(pVM);
253	return rc;
254	}
255
256	/* bail out */
257	}
258	HWACCMR0TermVM(pVM);
259	}
260	}
261	RTLogSetDefaultInstanceThread(NULL, 0);
262	return rc;
263	}
264
265
266	/**
267	* Terminates the R0 driver for a particular VM instance.
268	*
269	* This is normally called by ring-3 as part of the VM termination process, but
270	* may alternatively be called during the support driver session cleanup when
271	* the VM object is destroyed (see GVMM).
272	*
273	* @returns VBox status code.
274	*
275	* @param pVM The VM instance in question.
276	* @param pGVM Pointer to the global VM structure. Optional.
277	* @thread EMT or session clean up thread.
278	*/
279	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
280	{
281	/*
282	* Tell GVMM what we're up to and check that we only do this once.
283	*/
284	if (GVMMR0DoingTermVM(pVM, pGVM))
285	{
286	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
287	PGMR0DynMapTermVM(pVM);
288	#endif
289	HWACCMR0TermVM(pVM);
290	}
291
292	/*
293	* Deregister the logger.
294	*/
295	RTLogSetDefaultInstanceThread(NULL, 0);
296	return VINF_SUCCESS;
297	}
298
299
300	/**
301	* Calls the ring-3 host code.
302	*
303	* @returns VBox status code of the ring-3 call.
304	* @param pVM The VM handle.
305	* @param enmOperation The operation.
306	* @param uArg The argument to the operation.
307	*/
308	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
309	{
310	PVMCPU pVCpu = VMMGetCpu(pVM);
311
312	/** @todo profile this! */
313	pVCpu->vmm.s.enmCallHostOperation = enmOperation;
314	pVCpu->vmm.s.u64CallHostArg = uArg;
315	pVCpu->vmm.s.rcCallHost = VERR_INTERNAL_ERROR;
316	int rc = vmmR0CallHostLongJmp(&pVCpu->vmm.s.CallHostR0JmpBuf, VINF_VMM_CALL_HOST);
317	if (rc == VINF_SUCCESS)
318	rc = pVCpu->vmm.s.rcCallHost;
319	return rc;
320	}
321
322
323	#ifdef VBOX_WITH_STATISTICS
324	/**
325	* Record return code statistics
326	* @param pVM The VM handle.
327	* @param pVCpu The VMCPU handle.
328	* @param rc The status code.
329	*/
330	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
331	{
332	/*
333	* Collect statistics.
334	*/
335	switch (rc)
336	{
337	case VINF_SUCCESS:
338	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
339	break;
340	case VINF_EM_RAW_INTERRUPT:
341	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
342	break;
343	case VINF_EM_RAW_INTERRUPT_HYPER:
344	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
345	break;
346	case VINF_EM_RAW_GUEST_TRAP:
347	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
348	break;
349	case VINF_EM_RAW_RING_SWITCH:
350	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
351	break;
352	case VINF_EM_RAW_RING_SWITCH_INT:
353	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
354	break;
355	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
356	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetExceptionPrivilege);
357	break;
358	case VINF_EM_RAW_STALE_SELECTOR:
359	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
360	break;
361	case VINF_EM_RAW_IRET_TRAP:
362	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
363	break;
364	case VINF_IOM_HC_IOPORT_READ:
365	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
366	break;
367	case VINF_IOM_HC_IOPORT_WRITE:
368	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
369	break;
370	case VINF_IOM_HC_MMIO_READ:
371	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
372	break;
373	case VINF_IOM_HC_MMIO_WRITE:
374	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
375	break;
376	case VINF_IOM_HC_MMIO_READ_WRITE:
377	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
378	break;
379	case VINF_PATM_HC_MMIO_PATCH_READ:
380	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
381	break;
382	case VINF_PATM_HC_MMIO_PATCH_WRITE:
383	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
384	break;
385	case VINF_EM_RAW_EMULATE_INSTR:
386	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
387	break;
388	case VINF_EM_RAW_EMULATE_IO_BLOCK:
389	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
390	break;
391	case VINF_PATCH_EMULATE_INSTR:
392	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
393	break;
394	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
395	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
396	break;
397	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
398	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
399	break;
400	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
401	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
402	break;
403	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
404	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
405	break;
406	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
407	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
408	break;
409	case VINF_CSAM_PENDING_ACTION:
410	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
411	break;
412	case VINF_PGM_SYNC_CR3:
413	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
414	break;
415	case VINF_PATM_PATCH_INT3:
416	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
417	break;
418	case VINF_PATM_PATCH_TRAP_PF:
419	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
420	break;
421	case VINF_PATM_PATCH_TRAP_GP:
422	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
423	break;
424	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
425	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
426	break;
427	case VERR_REM_FLUSHED_PAGES_OVERFLOW:
428	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPageOverflow);
429	break;
430	case VINF_EM_RESCHEDULE_REM:
431	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
432	break;
433	case VINF_EM_RAW_TO_R3:
434	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
435	break;
436	case VINF_EM_RAW_TIMER_PENDING:
437	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
438	break;
439	case VINF_EM_RAW_INTERRUPT_PENDING:
440	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
441	break;
442	case VINF_VMM_CALL_HOST:
443	switch (pVCpu->vmm.s.enmCallHostOperation)
444	{
445	case VMMCALLHOST_PDM_LOCK:
446	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
447	break;
448	case VMMCALLHOST_PDM_QUEUE_FLUSH:
449	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
450	break;
451	case VMMCALLHOST_PGM_POOL_GROW:
452	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
453	break;
454	case VMMCALLHOST_PGM_LOCK:
455	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
456	break;
457	case VMMCALLHOST_PGM_MAP_CHUNK:
458	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
459	break;
460	case VMMCALLHOST_PGM_ALLOCATE_HANDY_PAGES:
461	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
462	break;
463	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
464	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
465	break;
466	case VMMCALLHOST_VMM_LOGGER_FLUSH:
467	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
468	break;
469	case VMMCALLHOST_VM_SET_ERROR:
470	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
471	break;
472	case VMMCALLHOST_VM_SET_RUNTIME_ERROR:
473	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
474	break;
475	case VMMCALLHOST_VM_R0_ASSERTION:
476	default:
477	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallHost);
478	break;
479	}
480	break;
481	case VINF_PATM_DUPLICATE_FUNCTION:
482	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
483	break;
484	case VINF_PGM_CHANGE_MODE:
485	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
486	break;
487	case VINF_EM_RAW_EMULATE_INSTR_HLT:
488	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulHlt);
489	break;
490	case VINF_EM_PENDING_REQUEST:
491	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
492	break;
493	default:
494	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
495	break;
496	}
497	}
498	#endif /* VBOX_WITH_STATISTICS */
499
500
501	/**
502	* Unused ring-0 entry point that used to be called from the interrupt gate.
503	*
504	* Will be removed one of the next times we do a major SUPDrv version bump.
505	*
506	* @returns VBox status code.
507	* @param pVM The VM to operate on.
508	* @param enmOperation Which operation to execute.
509	* @param pvArg Argument to the operation.
510	* @remarks Assume called with interrupts disabled.
511	*/
512	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
513	{
514	/*
515	* We're returning VERR_NOT_SUPPORT here so we've got something else
516	* than -1 which the interrupt gate glue code might return.
517	*/
518	Log(("operation %#x is not supported\n", enmOperation));
519	return VERR_NOT_SUPPORTED;
520	}
521
522
523	/**
524	* The Ring 0 entry point, called by the fast-ioctl path.
525	*
526	* @param pVM The VM to operate on.
527	* The return code is stored in pVM->vmm.s.iLastGZRc.
528	* @param idCpu The Virtual CPU ID of the calling EMT.
529	* @param enmOperation Which operation to execute.
530	* @remarks Assume called with interrupts _enabled_.
531	*/
532	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
533	{
534	if (RT_UNLIKELY(idCpu >= pVM->cCPUs))
535	{
536	pVM->vmm.s.iLastGZRc = VERR_INVALID_PARAMETER;
537	return;
538	}
539	PVMCPU pVCpu = &pVM->aCpus[idCpu];
540
541	switch (enmOperation)
542	{
543	/*
544	* Switch to GC and run guest raw mode code.
545	* Disable interrupts before doing the world switch.
546	*/
547	case VMMR0_DO_RAW_RUN:
548	{
549	/* Safety precaution as hwaccm disables the switcher. */
550	if (RT_LIKELY(!pVM->vmm.s.fSwitcherDisabled))
551	{
552	RTCCUINTREG uFlags = ASMIntDisableFlags();
553	int rc;
554	bool fVTxDisabled;
555
556	if (RT_UNLIKELY(pVM->cCPUs > 1))
557	{
558	pVM->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
559	return;
560	}
561
562	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
563	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
564	{
565	pVM->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
566	return;
567	}
568	#endif
569
570	/* We might need to disable VT-x if the active switcher turns off paging. */
571	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
572	if (RT_FAILURE(rc))
573	{
574	pVM->vmm.s.iLastGZRc = rc;
575	return;
576	}
577
578	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
579	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
580
581	TMNotifyStartOfExecution(pVCpu);
582	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
583	pVM->vmm.s.iLastGZRc = rc;
584	TMNotifyEndOfExecution(pVCpu);
585
586	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
587	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
588
589	/* Re-enable VT-x if previously turned off. */
590	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
591
592	if ( rc == VINF_EM_RAW_INTERRUPT
593	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
594	TRPMR0DispatchHostInterrupt(pVM);
595
596	ASMSetFlags(uFlags);
597
598	#ifdef VBOX_WITH_STATISTICS
599	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
600	vmmR0RecordRC(pVM, pVCpu, rc);
601	#endif
602	}
603	else
604	{
605	Assert(!pVM->vmm.s.fSwitcherDisabled);
606	pVM->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
607	}
608	break;
609	}
610
611	/*
612	* Run guest code using the available hardware acceleration technology.
613	*
614	* Disable interrupts before we do anything interesting. On Windows we avoid
615	* this by having the support driver raise the IRQL before calling us, this way
616	* we hope to get away with page faults and later calling into the kernel.
617	*/
618	case VMMR0_DO_HWACC_RUN:
619	{
620	int rc;
621
622	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
623
624	#ifndef RT_OS_WINDOWS /** @todo check other hosts */
625	RTCCUINTREG uFlags = ASMIntDisableFlags();
626	#endif
627	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
628
629	if (!HWACCMR0SuspendPending())
630	{
631	rc = HWACCMR0Enter(pVM, pVCpu);
632	if (RT_SUCCESS(rc))
633	{
634	rc = vmmR0CallHostSetJmp(&pVCpu->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
635	int rc2 = HWACCMR0Leave(pVM, pVCpu);
636	AssertRC(rc2);
637	}
638	}
639	else
640	{
641	/* System is about to go into suspend mode; go back to ring 3. */
642	rc = VINF_EM_RAW_INTERRUPT;
643	}
644	pVM->vmm.s.iLastGZRc = rc;
645
646	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
647	#ifndef RT_OS_WINDOWS /** @todo check other hosts */
648	ASMSetFlags(uFlags);
649	#endif
650
651	#ifdef VBOX_WITH_STATISTICS
652	vmmR0RecordRC(pVM, pVCpu, rc);
653	#endif
654	/* No special action required for external interrupts, just return. */
655	break;
656	}
657
658	/*
659	* For profiling.
660	*/
661	case VMMR0_DO_NOP:
662	pVM->vmm.s.iLastGZRc = VINF_SUCCESS;
663	break;
664
665	/*
666	* Impossible.
667	*/
668	default:
669	AssertMsgFailed(("%#x\n", enmOperation));
670	pVM->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
671	break;
672	}
673	}
674
675
676	/**
677	* Validates a session or VM session argument.
678	*
679	* @returns true / false accordingly.
680	* @param pVM The VM argument.
681	* @param pSession The session argument.
682	*/
683	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
684	{
685	/* This must be set! */
686	if (!pSession)
687	return false;
688
689	/* Only one out of the two. */
690	if (pVM && pClaimedSession)
691	return false;
692	if (pVM)
693	pClaimedSession = pVM->pSession;
694	return pClaimedSession == pSession;
695	}
696
697
698	/**
699	* VMMR0EntryEx worker function, either called directly or when ever possible
700	* called thru a longjmp so we can exit safely on failure.
701	*
702	* @returns VBox status code.
703	* @param pVM The VM to operate on.
704	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
705	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
706	* @param enmOperation Which operation to execute.
707	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
708	* The support driver validates this if it's present.
709	* @param u64Arg Some simple constant argument.
710	* @param pSession The session of the caller.
711	* @remarks Assume called with interrupts _enabled_.
712	*/
713	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
714	{
715	/*
716	* Common VM pointer validation.
717	*/
718	if (pVM)
719	{
720	if (RT_UNLIKELY( !VALID_PTR(pVM)
721	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
722	{
723	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
724	return VERR_INVALID_POINTER;
725	}
726	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
727	\|\| pVM->enmVMState > VMSTATE_TERMINATED
728	\|\| pVM->pVMR0 != pVM))
729	{
730	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
731	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
732	return VERR_INVALID_POINTER;
733	}
734
735	if (RT_UNLIKELY(idCpu >= pVM->cCPUs && idCpu != NIL_VMCPUID))
736	{
737	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCPUs=%u)\n", idCpu, pVM->cCPUs);
738	return VERR_INVALID_PARAMETER;
739	}
740	}
741	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
742	{
743	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
744	return VERR_INVALID_PARAMETER;
745	}
746
747
748	switch (enmOperation)
749	{
750	/*
751	* GVM requests
752	*/
753	case VMMR0_DO_GVMM_CREATE_VM:
754	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
755	return VERR_INVALID_PARAMETER;
756	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
757
758	case VMMR0_DO_GVMM_DESTROY_VM:
759	if (pReqHdr \|\| u64Arg)
760	return VERR_INVALID_PARAMETER;
761	return GVMMR0DestroyVM(pVM);
762
763	case VMMR0_DO_GVMM_REGISTER_VMCPU:
764	if (!pVM)
765	return VERR_INVALID_PARAMETER;
766	return GVMMR0RegisterVCpu(pVM, idCpu);
767
768	case VMMR0_DO_GVMM_SCHED_HALT:
769	if (pReqHdr)
770	return VERR_INVALID_PARAMETER;
771	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
772
773	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
774	if (pReqHdr \|\| u64Arg)
775	return VERR_INVALID_PARAMETER;
776	return GVMMR0SchedWakeUp(pVM, idCpu);
777
778	case VMMR0_DO_GVMM_SCHED_POKE:
779	if (pReqHdr \|\| u64Arg)
780	return VERR_INVALID_PARAMETER;
781	return GVMMR0SchedPoke(pVM, idCpu);
782
783	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
784	if (u64Arg)
785	return VERR_INVALID_PARAMETER;
786	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
787
788	case VMMR0_DO_GVMM_SCHED_POLL:
789	if (pReqHdr \|\| u64Arg > 1)
790	return VERR_INVALID_PARAMETER;
791	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
792
793	case VMMR0_DO_GVMM_QUERY_STATISTICS:
794	if (u64Arg)
795	return VERR_INVALID_PARAMETER;
796	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
797
798	case VMMR0_DO_GVMM_RESET_STATISTICS:
799	if (u64Arg)
800	return VERR_INVALID_PARAMETER;
801	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
802
803	/*
804	* Initialize the R0 part of a VM instance.
805	*/
806	case VMMR0_DO_VMMR0_INIT:
807	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
808
809	/*
810	* Terminate the R0 part of a VM instance.
811	*/
812	case VMMR0_DO_VMMR0_TERM:
813	return VMMR0TermVM(pVM, NULL);
814
815	/*
816	* Attempt to enable hwacc mode and check the current setting.
817	*
818	*/
819	case VMMR0_DO_HWACC_ENABLE:
820	return HWACCMR0EnableAllCpus(pVM);
821
822	/*
823	* Setup the hardware accelerated raw-mode session.
824	*/
825	case VMMR0_DO_HWACC_SETUP_VM:
826	{
827	RTCCUINTREG fFlags = ASMIntDisableFlags();
828	int rc = HWACCMR0SetupVM(pVM);
829	ASMSetFlags(fFlags);
830	return rc;
831	}
832
833	/*
834	* Switch to RC to execute Hypervisor function.
835	*/
836	case VMMR0_DO_CALL_HYPERVISOR:
837	{
838	int rc;
839	bool fVTxDisabled;
840
841	/* Safety precaution as HWACCM can disable the switcher. */
842	Assert(!pVM->vmm.s.fSwitcherDisabled);
843	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
844	return VERR_NOT_SUPPORTED;
845
846	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
847	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
848	return VERR_PGM_NO_CR3_SHADOW_ROOT;
849	#endif
850
851	RTCCUINTREG fFlags = ASMIntDisableFlags();
852
853	/* We might need to disable VT-x if the active switcher turns off paging. */
854	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
855	if (RT_FAILURE(rc))
856	return rc;
857
858	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
859
860	/* Re-enable VT-x if previously turned off. */
861	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
862
863	/** @todo dispatch interrupts? */
864	ASMSetFlags(fFlags);
865	return rc;
866	}
867
868	/*
869	* PGM wrappers.
870	*/
871	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
872	if (idCpu == NIL_VMCPUID)
873	return VERR_INVALID_CPU_ID;
874	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
875
876	/*
877	* GMM wrappers.
878	*/
879	case VMMR0_DO_GMM_INITIAL_RESERVATION:
880	if (u64Arg)
881	return VERR_INVALID_PARAMETER;
882	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
883
884	case VMMR0_DO_GMM_UPDATE_RESERVATION:
885	if (u64Arg)
886	return VERR_INVALID_PARAMETER;
887	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
888
889	case VMMR0_DO_GMM_ALLOCATE_PAGES:
890	if (u64Arg)
891	return VERR_INVALID_PARAMETER;
892	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
893
894	case VMMR0_DO_GMM_FREE_PAGES:
895	if (u64Arg)
896	return VERR_INVALID_PARAMETER;
897	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
898
899	case VMMR0_DO_GMM_BALLOONED_PAGES:
900	if (u64Arg)
901	return VERR_INVALID_PARAMETER;
902	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
903
904	case VMMR0_DO_GMM_DEFLATED_BALLOON:
905	if (pReqHdr)
906	return VERR_INVALID_PARAMETER;
907	return GMMR0DeflatedBalloon(pVM, idCpu, (uint32_t)u64Arg);
908
909	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
910	if (u64Arg)
911	return VERR_INVALID_PARAMETER;
912	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
913
914	case VMMR0_DO_GMM_SEED_CHUNK:
915	if (pReqHdr)
916	return VERR_INVALID_PARAMETER;
917	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
918
919	/*
920	* A quick GCFGM mock-up.
921	*/
922	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
923	case VMMR0_DO_GCFGM_SET_VALUE:
924	case VMMR0_DO_GCFGM_QUERY_VALUE:
925	{
926	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
927	return VERR_INVALID_PARAMETER;
928	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
929	if (pReq->Hdr.cbReq != sizeof(*pReq))
930	return VERR_INVALID_PARAMETER;
931	int rc;
932	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
933	{
934	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
935	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
936	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
937	}
938	else
939	{
940	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
941	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
942	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
943	}
944	return rc;
945	}
946
947
948	/*
949	* Requests to the internal networking service.
950	*/
951	case VMMR0_DO_INTNET_OPEN:
952	{
953	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
954	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
955	return VERR_INVALID_PARAMETER;
956	if (!g_pIntNet)
957	return VERR_NOT_SUPPORTED;
958	return INTNETR0OpenReq(g_pIntNet, pSession, pReq);
959	}
960
961	case VMMR0_DO_INTNET_IF_CLOSE:
962	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
963	return VERR_INVALID_PARAMETER;
964	if (!g_pIntNet)
965	return VERR_NOT_SUPPORTED;
966	return INTNETR0IfCloseReq(g_pIntNet, pSession, (PINTNETIFCLOSEREQ)pReqHdr);
967
968	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
969	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETRING3BUFFERREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
970	return VERR_INVALID_PARAMETER;
971	if (!g_pIntNet)
972	return VERR_NOT_SUPPORTED;
973	return INTNETR0IfGetRing3BufferReq(g_pIntNet, pSession, (PINTNETIFGETRING3BUFFERREQ)pReqHdr);
974
975	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
976	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
977	return VERR_INVALID_PARAMETER;
978	if (!g_pIntNet)
979	return VERR_NOT_SUPPORTED;
980	return INTNETR0IfSetPromiscuousModeReq(g_pIntNet, pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
981
982	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
983	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
984	return VERR_INVALID_PARAMETER;
985	if (!g_pIntNet)
986	return VERR_NOT_SUPPORTED;
987	return INTNETR0IfSetMacAddressReq(g_pIntNet, pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
988
989	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
990	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
991	return VERR_INVALID_PARAMETER;
992	if (!g_pIntNet)
993	return VERR_NOT_SUPPORTED;
994	return INTNETR0IfSetActiveReq(g_pIntNet, pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
995
996	case VMMR0_DO_INTNET_IF_SEND:
997	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
998	return VERR_INVALID_PARAMETER;
999	if (!g_pIntNet)
1000	return VERR_NOT_SUPPORTED;
1001	return INTNETR0IfSendReq(g_pIntNet, pSession, (PINTNETIFSENDREQ)pReqHdr);
1002
1003	case VMMR0_DO_INTNET_IF_WAIT:
1004	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1005	return VERR_INVALID_PARAMETER;
1006	if (!g_pIntNet)
1007	return VERR_NOT_SUPPORTED;
1008	return INTNETR0IfWaitReq(g_pIntNet, pSession, (PINTNETIFWAITREQ)pReqHdr);
1009
1010	/*
1011	* For profiling.
1012	*/
1013	case VMMR0_DO_NOP:
1014	case VMMR0_DO_SLOW_NOP:
1015	return VINF_SUCCESS;
1016
1017	/*
1018	* For testing Ring-0 APIs invoked in this environment.
1019	*/
1020	case VMMR0_DO_TESTS:
1021	/** @todo make new test */
1022	return VINF_SUCCESS;
1023
1024
1025	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1026	case VMMR0_DO_TEST_SWITCHER3264:
1027	if (idCpu == NIL_VMCPUID)
1028	return VERR_INVALID_CPU_ID;
1029	return HWACCMR0TestSwitcher3264(pVM);
1030	#endif
1031	default:
1032	/*
1033	* We're returning VERR_NOT_SUPPORT here so we've got something else
1034	* than -1 which the interrupt gate glue code might return.
1035	*/
1036	Log(("operation %#x is not supported\n", enmOperation));
1037	return VERR_NOT_SUPPORTED;
1038	}
1039	}
1040
1041
1042	/**
1043	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1044	*/
1045	typedef struct VMMR0ENTRYEXARGS
1046	{
1047	PVM pVM;
1048	VMCPUID idCpu;
1049	VMMR0OPERATION enmOperation;
1050	PSUPVMMR0REQHDR pReq;
1051	uint64_t u64Arg;
1052	PSUPDRVSESSION pSession;
1053	} VMMR0ENTRYEXARGS;
1054	/** Pointer to a vmmR0EntryExWrapper argument package. */
1055	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1056
1057	/**
1058	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1059	*
1060	* @returns VBox status code.
1061	* @param pvArgs The argument package
1062	*/
1063	static int vmmR0EntryExWrapper(void *pvArgs)
1064	{
1065	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1066	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1067	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1068	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1069	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1070	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1071	}
1072
1073
1074	/**
1075	* The Ring 0 entry point, called by the support library (SUP).
1076	*
1077	* @returns VBox status code.
1078	* @param pVM The VM to operate on.
1079	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1080	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1081	* @param enmOperation Which operation to execute.
1082	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1083	* @param u64Arg Some simple constant argument.
1084	* @param pSession The session of the caller.
1085	* @remarks Assume called with interrupts _enabled_.
1086	*/
1087	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1088	{
1089	/*
1090	* Requests that should only happen on the EMT thread will be
1091	* wrapped in a setjmp so we can assert without causing trouble.
1092	*/
1093	if ( VALID_PTR(pVM)
1094	&& pVM->pVMR0
1095	&& idCpu < pVM->cCPUs)
1096	{
1097	switch (enmOperation)
1098	{
1099	/* These might/will be called before VMMR3Init. */
1100	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1101	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1102	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1103	case VMMR0_DO_GMM_FREE_PAGES:
1104	case VMMR0_DO_GMM_BALLOONED_PAGES:
1105	case VMMR0_DO_GMM_DEFLATED_BALLOON:
1106	/* On the mac we might not have a valid jmp buf, so check these as well. */
1107	case VMMR0_DO_VMMR0_INIT:
1108	case VMMR0_DO_VMMR0_TERM:
1109	{
1110	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1111
1112	if (!pVCpu->vmm.s.CallHostR0JmpBuf.pvSavedStack)
1113	break;
1114
1115	/** @todo validate this EMT claim... GVM knows. */
1116	VMMR0ENTRYEXARGS Args;
1117	Args.pVM = pVM;
1118	Args.idCpu = idCpu;
1119	Args.enmOperation = enmOperation;
1120	Args.pReq = pReq;
1121	Args.u64Arg = u64Arg;
1122	Args.pSession = pSession;
1123	return vmmR0CallHostSetJmpEx(&pVCpu->vmm.s.CallHostR0JmpBuf, vmmR0EntryExWrapper, &Args);
1124	}
1125
1126	default:
1127	break;
1128	}
1129	}
1130	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1131	}
1132
1133
1134	/**
1135	* Internal R0 logger worker: Flush logger.
1136	*
1137	* @param pLogger The logger instance to flush.
1138	* @remark This function must be exported!
1139	*/
1140	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1141	{
1142	/*
1143	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1144	* (This is a bit paranoid code.)
1145	*/
1146	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1147	if ( !VALID_PTR(pR0Logger)
1148	\|\| !VALID_PTR(pR0Logger + 1)
1149	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1150	{
1151	#ifdef DEBUG
1152	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1153	#endif
1154	return;
1155	}
1156	if (pR0Logger->fFlushingDisabled)
1157	return; /* quietly */
1158
1159	PVM pVM = pR0Logger->pVM;
1160	if ( !VALID_PTR(pVM)
1161	\|\| pVM->pVMR0 != pVM)
1162	{
1163	#ifdef DEBUG
1164	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1165	#endif
1166	return;
1167	}
1168
1169	PVMCPU pVCpu = VMMGetCpu(pVM);
1170
1171	/*
1172	* Check that the jump buffer is armed.
1173	*/
1174	#ifdef RT_ARCH_X86
1175	if ( !pVCpu->vmm.s.CallHostR0JmpBuf.eip
1176	\|\| pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1177	#else
1178	if ( !pVCpu->vmm.s.CallHostR0JmpBuf.rip
1179	\|\| pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1180	#endif
1181	{
1182	#ifdef DEBUG
1183	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1184	#endif
1185	return;
1186	}
1187	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
1188	}
1189
1190
1191	/**
1192	* Disables flushing of the ring-0 debug log.
1193	*
1194	* @param pVCpu The shared virtual cpu structure.
1195	*/
1196	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1197	{
1198	PVM pVM = pVCpu->pVMR0;
1199	if (pVM->vmm.s.pR0LoggerR0)
1200	pVM->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1201	}
1202
1203
1204	/**
1205	* Enables flushing of the ring-0 debug log.
1206	*
1207	* @param pVCpu The shared virtual cpu structure.
1208	*/
1209	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1210	{
1211	PVM pVM = pVCpu->pVMR0;
1212	if (pVM->vmm.s.pR0LoggerR0)
1213	pVM->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1214	}
1215
1216
1217	/**
1218	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1219	*
1220	* @returns true if the breakpoint should be hit, false if it should be ignored.
1221	*/
1222	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1223	{
1224	#if 0
1225	return true;
1226	#else
1227	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1228	if (pVM)
1229	{
1230	PVMCPU pVCpu = VMMGetCpu(pVM);
1231
1232	#ifdef RT_ARCH_X86
1233	if ( pVCpu->vmm.s.CallHostR0JmpBuf.eip
1234	&& !pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1235	#else
1236	if ( pVCpu->vmm.s.CallHostR0JmpBuf.rip
1237	&& !pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1238	#endif
1239	{
1240	int rc = VMMR0CallHost(pVM, VMMCALLHOST_VM_R0_ASSERTION, 0);
1241	return RT_FAILURE_NP(rc);
1242	}
1243	}
1244	#ifdef RT_OS_LINUX
1245	return true;
1246	#else
1247	return false;
1248	#endif
1249	#endif
1250	}
1251
1252
1253	/**
1254	* Override this so we can push it up to ring-3.
1255	*
1256	* @param pszExpr Expression. Can be NULL.
1257	* @param uLine Location line number.
1258	* @param pszFile Location file name.
1259	* @param pszFunction Location function name.
1260	*/
1261	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1262	{
1263	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1264	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1265	"Expression: %s\n"
1266	"Location : %s(%d) %s\n",
1267	pszExpr, pszFile, uLine, pszFunction);
1268	#endif
1269	LogAlways(("\n!!R0-Assertion Failed!!\n"
1270	"Expression: %s\n"
1271	"Location : %s(%d) %s\n",
1272	pszExpr, pszFile, uLine, pszFunction));
1273
1274	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1275	if (pVM)
1276	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1277	"\n!!R0-Assertion Failed!!\n"
1278	"Expression: %s\n"
1279	"Location : %s(%d) %s\n",
1280	pszExpr, pszFile, uLine, pszFunction);
1281	#ifdef RT_OS_DARWIN
1282	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1283	#endif
1284	}
1285
1286
1287	/**
1288	* Callback for RTLogFormatV which writes to the ring-3 log port.
1289	* See PFNLOGOUTPUT() for details.
1290	*/
1291	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1292	{
1293	for (size_t i = 0; i < cbChars; i++)
1294	{
1295	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1296	SUPR0Printf("%c", pachChars[i]);
1297	#endif
1298	LogAlways(("%c", pachChars[i]));
1299	}
1300
1301	return cbChars;
1302	}
1303
1304
1305	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1306	{
1307	va_list va;
1308
1309	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1310	if (pLog)
1311	{
1312	va_start(va, pszFormat);
1313	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1314	va_end(va);
1315
1316	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1317	if (pVM)
1318	{
1319	va_start(va, pszFormat);
1320	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1321	va_end(va);
1322	}
1323	}
1324
1325	#ifdef RT_OS_DARWIN
1326	va_start(va, pszFormat);
1327	RTAssertMsg2V(pszFormat, va);
1328	va_end(va);
1329	#endif
1330	}
1331

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 19454

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