VMMR0.cpp@ 20871

Last change on this file since 20871 was 20871, checked in by vboxsync, 16 years ago
VMM: Make sure there is enough room for a few physical handler notification before we disable ring-3 calls. Partial VMM[GC\|R0]CallHost unification.
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File size: 45.7 KB

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1	/* $Id: VMMR0.cpp 20871 2009-06-24 01:56:19Z 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
36	#include <VBox/gvmm.h>
37	#include <VBox/gmm.h>
38	#include <VBox/intnet.h>
39	#include <VBox/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/assert.h>
46	#include <iprt/mp.h>
47	#include <iprt/stdarg.h>
48	#include <iprt/string.h>
49	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
50	# include <iprt/thread.h>
51	#endif
52
53	#if defined(_MSC_VER) && defined(RT_ARCH_AMD64) /** @todo check this with with VC7! */
54	# pragma intrinsic(_AddressOfReturnAddress)
55	#endif
56
57
58	/*******************************************************************************
59	* Internal Functions *
60	*******************************************************************************/
61	RT_C_DECLS_BEGIN
62	VMMR0DECL(int) ModuleInit(void);
63	VMMR0DECL(void) ModuleTerm(void);
64	RT_C_DECLS_END
65
66
67	/*******************************************************************************
68	* Global Variables *
69	*******************************************************************************/
70	/** Pointer to the internal networking service instance. */
71	PINTNET g_pIntNet = 0;
72
73
74	/**
75	* Initialize the module.
76	* This is called when we're first loaded.
77	*
78	* @returns 0 on success.
79	* @returns VBox status on failure.
80	*/
81	VMMR0DECL(int) ModuleInit(void)
82	{
83	LogFlow(("ModuleInit:\n"));
84
85	/*
86	* Initialize the GVMM, GMM, HWACCM, PGM (Darwin) and INTNET.
87	*/
88	int rc = GVMMR0Init();
89	if (RT_SUCCESS(rc))
90	{
91	rc = GMMR0Init();
92	if (RT_SUCCESS(rc))
93	{
94	rc = HWACCMR0Init();
95	if (RT_SUCCESS(rc))
96	{
97	rc = PGMRegisterStringFormatTypes();
98	if (RT_SUCCESS(rc))
99	{
100	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
101	rc = PGMR0DynMapInit();
102	#endif
103	if (RT_SUCCESS(rc))
104	{
105	LogFlow(("ModuleInit: g_pIntNet=%p\n", g_pIntNet));
106	g_pIntNet = NULL;
107	LogFlow(("ModuleInit: g_pIntNet=%p should be NULL now...\n", g_pIntNet));
108	rc = INTNETR0Create(&g_pIntNet);
109	if (RT_SUCCESS(rc))
110	{
111	LogFlow(("ModuleInit: returns success. g_pIntNet=%p\n", g_pIntNet));
112	return VINF_SUCCESS;
113	}
114
115	/* bail out */
116	g_pIntNet = NULL;
117	LogFlow(("ModuleTerm: returns %Rrc\n", rc));
118	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
119	PGMR0DynMapTerm();
120	#endif
121	}
122	PGMDeregisterStringFormatTypes();
123	}
124	HWACCMR0Term();
125	}
126	GMMR0Term();
127	}
128	GVMMR0Term();
129	}
130
131	LogFlow(("ModuleInit: failed %Rrc\n", rc));
132	return rc;
133	}
134
135
136	/**
137	* Terminate the module.
138	* This is called when we're finally unloaded.
139	*/
140	VMMR0DECL(void) ModuleTerm(void)
141	{
142	LogFlow(("ModuleTerm:\n"));
143
144	/*
145	* Destroy the internal networking instance.
146	*/
147	if (g_pIntNet)
148	{
149	INTNETR0Destroy(g_pIntNet);
150	g_pIntNet = NULL;
151	}
152
153	/*
154	* PGM (Darwin) and HWACCM global cleanup.
155	* Destroy the GMM and GVMM instances.
156	*/
157	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
158	PGMR0DynMapTerm();
159	#endif
160	PGMDeregisterStringFormatTypes();
161	HWACCMR0Term();
162
163	GMMR0Term();
164	GVMMR0Term();
165
166	LogFlow(("ModuleTerm: returns\n"));
167	}
168
169
170	/**
171	* Initaties the R0 driver for a particular VM instance.
172	*
173	* @returns VBox status code.
174	*
175	* @param pVM The VM instance in question.
176	* @param uSvnRev The SVN revision of the ring-3 part.
177	* @thread EMT.
178	*/
179	static int vmmR0InitVM(PVM pVM, uint32_t uSvnRev)
180	{
181	/*
182	* Match the SVN revisions.
183	*/
184	if (uSvnRev != VMMGetSvnRev())
185	{
186	LogRel(("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev()));
187	SUPR0Printf("VMMR0InitVM: Revision mismatch, r3=%d r0=%d\n", uSvnRev, VMMGetSvnRev());
188	return VERR_VERSION_MISMATCH;
189	}
190	if ( !VALID_PTR(pVM)
191	\|\| pVM->pVMR0 != pVM)
192	return VERR_INVALID_PARAMETER;
193
194	#ifdef LOG_ENABLED
195	/*
196	* Register the EMT R0 logger instance for VCPU 0.
197	*/
198	PVMCPU pVCpu = &pVM->aCpus[0];
199
200	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
201	if (pR0Logger)
202	{
203	# if 0 /* testing of the logger. */
204	LogCom(("vmmR0InitVM: before %p\n", RTLogDefaultInstance()));
205	LogCom(("vmmR0InitVM: pfnFlush=%p actual=%p\n", pR0Logger->Logger.pfnFlush, vmmR0LoggerFlush));
206	LogCom(("vmmR0InitVM: pfnLogger=%p actual=%p\n", pR0Logger->Logger.pfnLogger, vmmR0LoggerWrapper));
207	LogCom(("vmmR0InitVM: offScratch=%d fFlags=%#x fDestFlags=%#x\n", pR0Logger->Logger.offScratch, pR0Logger->Logger.fFlags, pR0Logger->Logger.fDestFlags));
208
209	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
210	LogCom(("vmmR0InitVM: after %p reg\n", RTLogDefaultInstance()));
211	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
212	LogCom(("vmmR0InitVM: after %p dereg\n", RTLogDefaultInstance()));
213
214	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
215	LogCom(("vmmR0InitVM: returned succesfully from direct logger call.\n"));
216	pR0Logger->Logger.pfnFlush(&pR0Logger->Logger);
217	LogCom(("vmmR0InitVM: returned succesfully from direct flush call.\n"));
218
219	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
220	LogCom(("vmmR0InitVM: after %p reg2\n", RTLogDefaultInstance()));
221	pR0Logger->Logger.pfnLogger("hello ring-0 logger\n");
222	LogCom(("vmmR0InitVM: returned succesfully from direct logger call (2). offScratch=%d\n", pR0Logger->Logger.offScratch));
223	RTLogSetDefaultInstanceThread(NULL, pVM->pSession);
224	LogCom(("vmmR0InitVM: after %p dereg2\n", RTLogDefaultInstance()));
225
226	RTLogLoggerEx(&pR0Logger->Logger, 0, ~0U, "hello ring-0 logger (RTLogLoggerEx)\n");
227	LogCom(("vmmR0InitVM: RTLogLoggerEx returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
228
229	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
230	RTLogPrintf("hello ring-0 logger (RTLogPrintf)\n");
231	LogCom(("vmmR0InitVM: RTLogPrintf returned fine offScratch=%d\n", pR0Logger->Logger.offScratch));
232	# endif
233	Log(("Switching to per-thread logging instance %p (key=%p)\n", &pR0Logger->Logger, pVM->pSession));
234	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
235	pR0Logger->fRegistered = true;
236	}
237	#endif /* LOG_ENABLED */
238
239	/*
240	* Initialize the per VM data for GVMM and GMM.
241	*/
242	int rc = GVMMR0InitVM(pVM);
243	// if (RT_SUCCESS(rc))
244	// rc = GMMR0InitPerVMData(pVM);
245	if (RT_SUCCESS(rc))
246	{
247	/*
248	* Init HWACCM, CPUM and PGM (Darwin only).
249	*/
250	rc = HWACCMR0InitVM(pVM);
251	if (RT_SUCCESS(rc))
252	{
253	rc = CPUMR0Init(pVM); /** @todo rename to CPUMR0InitVM */
254	if (RT_SUCCESS(rc))
255	{
256	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
257	rc = PGMR0DynMapInitVM(pVM);
258	#endif
259	if (RT_SUCCESS(rc))
260	{
261	GVMMR0DoneInitVM(pVM);
262	return rc;
263	}
264
265	/* bail out */
266	}
267	HWACCMR0TermVM(pVM);
268	}
269	}
270	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
271	return rc;
272	}
273
274
275	/**
276	* Terminates the R0 driver for a particular VM instance.
277	*
278	* This is normally called by ring-3 as part of the VM termination process, but
279	* may alternatively be called during the support driver session cleanup when
280	* the VM object is destroyed (see GVMM).
281	*
282	* @returns VBox status code.
283	*
284	* @param pVM The VM instance in question.
285	* @param pGVM Pointer to the global VM structure. Optional.
286	* @thread EMT or session clean up thread.
287	*/
288	VMMR0DECL(int) VMMR0TermVM(PVM pVM, PGVM pGVM)
289	{
290	/*
291	* Tell GVMM what we're up to and check that we only do this once.
292	*/
293	if (GVMMR0DoingTermVM(pVM, pGVM))
294	{
295	#ifdef VBOX_WITH_2X_4GB_ADDR_SPACE
296	PGMR0DynMapTermVM(pVM);
297	#endif
298	HWACCMR0TermVM(pVM);
299	}
300
301	/*
302	* Deregister the logger.
303	*/
304	RTLogSetDefaultInstanceThread(NULL, (uintptr_t)pVM->pSession);
305	return VINF_SUCCESS;
306	}
307
308
309	/**
310	* Calls the ring-3 host code.
311	*
312	* @returns VBox status code of the ring-3 call.
313	* @param pVM The VM handle.
314	* @param enmOperation The operation.
315	* @param uArg The argument to the operation.
316	*
317	* @deprecated Use VMMRZCallRing3.
318	*/
319	VMMR0DECL(int) VMMR0CallHost(PVM pVM, VMMCALLHOST enmOperation, uint64_t uArg)
320	{
321	return VMMRZCallRing3(pVM, VMMGetCpu(pVM), enmOperation, uArg);
322	}
323
324
325	#ifdef VBOX_WITH_STATISTICS
326	/**
327	* Record return code statistics
328	* @param pVM The VM handle.
329	* @param pVCpu The VMCPU handle.
330	* @param rc The status code.
331	*/
332	static void vmmR0RecordRC(PVM pVM, PVMCPU pVCpu, int rc)
333	{
334	/*
335	* Collect statistics.
336	*/
337	switch (rc)
338	{
339	case VINF_SUCCESS:
340	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetNormal);
341	break;
342	case VINF_EM_RAW_INTERRUPT:
343	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterrupt);
344	break;
345	case VINF_EM_RAW_INTERRUPT_HYPER:
346	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptHyper);
347	break;
348	case VINF_EM_RAW_GUEST_TRAP:
349	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGuestTrap);
350	break;
351	case VINF_EM_RAW_RING_SWITCH:
352	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitch);
353	break;
354	case VINF_EM_RAW_RING_SWITCH_INT:
355	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRingSwitchInt);
356	break;
357	case VINF_EM_RAW_EXCEPTION_PRIVILEGED:
358	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetExceptionPrivilege);
359	break;
360	case VINF_EM_RAW_STALE_SELECTOR:
361	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetStaleSelector);
362	break;
363	case VINF_EM_RAW_IRET_TRAP:
364	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIRETTrap);
365	break;
366	case VINF_IOM_HC_IOPORT_READ:
367	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIORead);
368	break;
369	case VINF_IOM_HC_IOPORT_WRITE:
370	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOWrite);
371	break;
372	case VINF_IOM_HC_MMIO_READ:
373	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIORead);
374	break;
375	case VINF_IOM_HC_MMIO_WRITE:
376	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOWrite);
377	break;
378	case VINF_IOM_HC_MMIO_READ_WRITE:
379	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOReadWrite);
380	break;
381	case VINF_PATM_HC_MMIO_PATCH_READ:
382	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchRead);
383	break;
384	case VINF_PATM_HC_MMIO_PATCH_WRITE:
385	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMMIOPatchWrite);
386	break;
387	case VINF_EM_RAW_EMULATE_INSTR:
388	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulate);
389	break;
390	case VINF_EM_RAW_EMULATE_IO_BLOCK:
391	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIOBlockEmulate);
392	break;
393	case VINF_PATCH_EMULATE_INSTR:
394	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchEmulate);
395	break;
396	case VINF_EM_RAW_EMULATE_INSTR_LDT_FAULT:
397	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetLDTFault);
398	break;
399	case VINF_EM_RAW_EMULATE_INSTR_GDT_FAULT:
400	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetGDTFault);
401	break;
402	case VINF_EM_RAW_EMULATE_INSTR_IDT_FAULT:
403	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetIDTFault);
404	break;
405	case VINF_EM_RAW_EMULATE_INSTR_TSS_FAULT:
406	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTSSFault);
407	break;
408	case VINF_EM_RAW_EMULATE_INSTR_PD_FAULT:
409	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPDFault);
410	break;
411	case VINF_CSAM_PENDING_ACTION:
412	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCSAMTask);
413	break;
414	case VINF_PGM_SYNC_CR3:
415	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetSyncCR3);
416	break;
417	case VINF_PATM_PATCH_INT3:
418	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchInt3);
419	break;
420	case VINF_PATM_PATCH_TRAP_PF:
421	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchPF);
422	break;
423	case VINF_PATM_PATCH_TRAP_GP:
424	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchGP);
425	break;
426	case VINF_PATM_PENDING_IRQ_AFTER_IRET:
427	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPatchIretIRQ);
428	break;
429	case VINF_EM_RESCHEDULE_REM:
430	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetRescheduleREM);
431	break;
432	case VINF_EM_RAW_TO_R3:
433	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetToR3);
434	break;
435	case VINF_EM_RAW_TIMER_PENDING:
436	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetTimerPending);
437	break;
438	case VINF_EM_RAW_INTERRUPT_PENDING:
439	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetInterruptPending);
440	break;
441	case VINF_VMM_CALL_HOST:
442	switch (pVCpu->vmm.s.enmCallHostOperation)
443	{
444	case VMMCALLHOST_PDM_LOCK:
445	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMLock);
446	break;
447	case VMMCALLHOST_PDM_QUEUE_FLUSH:
448	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPDMQueueFlush);
449	break;
450	case VMMCALLHOST_PGM_POOL_GROW:
451	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMPoolGrow);
452	break;
453	case VMMCALLHOST_PGM_LOCK:
454	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMLock);
455	break;
456	case VMMCALLHOST_PGM_MAP_CHUNK:
457	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMMapChunk);
458	break;
459	case VMMCALLHOST_PGM_ALLOCATE_HANDY_PAGES:
460	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallPGMAllocHandy);
461	break;
462	case VMMCALLHOST_REM_REPLAY_HANDLER_NOTIFICATIONS:
463	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallRemReplay);
464	break;
465	case VMMCALLHOST_VMM_LOGGER_FLUSH:
466	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallLogFlush);
467	break;
468	case VMMCALLHOST_VM_SET_ERROR:
469	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetError);
470	break;
471	case VMMCALLHOST_VM_SET_RUNTIME_ERROR:
472	STAM_COUNTER_INC(&pVM->vmm.s.StatRZCallVMSetRuntimeError);
473	break;
474	case VMMCALLHOST_VM_R0_ASSERTION:
475	default:
476	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetCallHost);
477	break;
478	}
479	break;
480	case VINF_PATM_DUPLICATE_FUNCTION:
481	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPATMDuplicateFn);
482	break;
483	case VINF_PGM_CHANGE_MODE:
484	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPGMChangeMode);
485	break;
486	case VINF_EM_RAW_EMULATE_INSTR_HLT:
487	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetEmulHlt);
488	break;
489	case VINF_EM_PENDING_REQUEST:
490	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetPendingRequest);
491	break;
492	default:
493	STAM_COUNTER_INC(&pVM->vmm.s.StatRZRetMisc);
494	break;
495	}
496	}
497	#endif /* VBOX_WITH_STATISTICS */
498
499
500	/**
501	* Unused ring-0 entry point that used to be called from the interrupt gate.
502	*
503	* Will be removed one of the next times we do a major SUPDrv version bump.
504	*
505	* @returns VBox status code.
506	* @param pVM The VM to operate on.
507	* @param enmOperation Which operation to execute.
508	* @param pvArg Argument to the operation.
509	* @remarks Assume called with interrupts disabled.
510	*/
511	VMMR0DECL(int) VMMR0EntryInt(PVM pVM, VMMR0OPERATION enmOperation, void *pvArg)
512	{
513	/*
514	* We're returning VERR_NOT_SUPPORT here so we've got something else
515	* than -1 which the interrupt gate glue code might return.
516	*/
517	Log(("operation %#x is not supported\n", enmOperation));
518	return VERR_NOT_SUPPORTED;
519	}
520
521
522	/**
523	* The Ring 0 entry point, called by the fast-ioctl path.
524	*
525	* @param pVM The VM to operate on.
526	* The return code is stored in pVM->vmm.s.iLastGZRc.
527	* @param idCpu The Virtual CPU ID of the calling EMT.
528	* @param enmOperation Which operation to execute.
529	* @remarks Assume called with interrupts _enabled_.
530	*/
531	VMMR0DECL(void) VMMR0EntryFast(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation)
532	{
533	if (RT_UNLIKELY(idCpu >= pVM->cCPUs))
534	return;
535	PVMCPU pVCpu = &pVM->aCpus[idCpu];
536
537	switch (enmOperation)
538	{
539	/*
540	* Switch to GC and run guest raw mode code.
541	* Disable interrupts before doing the world switch.
542	*/
543	case VMMR0_DO_RAW_RUN:
544	{
545	/* Safety precaution as hwaccm disables the switcher. */
546	if (RT_LIKELY(!pVM->vmm.s.fSwitcherDisabled))
547	{
548	RTCCUINTREG uFlags = ASMIntDisableFlags();
549	int rc;
550	bool fVTxDisabled;
551
552	if (RT_UNLIKELY(pVM->cCPUs > 1))
553	{
554	pVCpu->vmm.s.iLastGZRc = VERR_RAW_MODE_INVALID_SMP;
555	return;
556	}
557
558	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
559	if (RT_UNLIKELY(!PGMGetHyperCR3(pVCpu)))
560	{
561	pVCpu->vmm.s.iLastGZRc = VERR_PGM_NO_CR3_SHADOW_ROOT;
562	return;
563	}
564	#endif
565
566	/* We might need to disable VT-x if the active switcher turns off paging. */
567	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
568	if (RT_FAILURE(rc))
569	{
570	pVCpu->vmm.s.iLastGZRc = rc;
571	return;
572	}
573
574	ASMAtomicWriteU32(&pVCpu->idHostCpu, RTMpCpuId());
575	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC);
576
577	TMNotifyStartOfExecution(pVCpu);
578	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
579	pVCpu->vmm.s.iLastGZRc = rc;
580	TMNotifyEndOfExecution(pVCpu);
581
582	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
583	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
584
585	/* Re-enable VT-x if previously turned off. */
586	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
587
588	if ( rc == VINF_EM_RAW_INTERRUPT
589	\|\| rc == VINF_EM_RAW_INTERRUPT_HYPER)
590	TRPMR0DispatchHostInterrupt(pVM);
591
592	ASMSetFlags(uFlags);
593
594	#ifdef VBOX_WITH_STATISTICS
595	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
596	vmmR0RecordRC(pVM, pVCpu, rc);
597	#endif
598	}
599	else
600	{
601	Assert(!pVM->vmm.s.fSwitcherDisabled);
602	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
603	}
604	break;
605	}
606
607	/*
608	* Run guest code using the available hardware acceleration technology.
609	*
610	* Disable interrupts before we do anything interesting. On Windows we avoid
611	* this by having the support driver raise the IRQL before calling us, this way
612	* we hope to get away with page faults and later calling into the kernel.
613	*/
614	case VMMR0_DO_HWACC_RUN:
615	{
616	int rc;
617
618	STAM_COUNTER_INC(&pVM->vmm.s.StatRunRC);
619
620	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
621	RTTHREADPREEMPTSTATE PreemptState = RTTHREADPREEMPTSTATE_INITIALIZER;
622	RTThreadPreemptDisable(&PreemptState);
623	#elif !defined(RT_OS_WINDOWS)
624	RTCCUINTREG uFlags = ASMIntDisableFlags();
625	#endif
626	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
627
628	#ifdef LOG_ENABLED
629	if (pVCpu->idCpu > 0)
630	{
631	/* Lazy registration of ring 0 loggers. */
632	PVMMR0LOGGER pR0Logger = pVCpu->vmm.s.pR0LoggerR0;
633	if ( pR0Logger
634	&& !pR0Logger->fRegistered)
635	{
636	RTLogSetDefaultInstanceThread(&pR0Logger->Logger, (uintptr_t)pVM->pSession);
637	pR0Logger->fRegistered = true;
638	}
639	}
640	#endif
641	if (!HWACCMR0SuspendPending())
642	{
643	rc = HWACCMR0Enter(pVM, pVCpu);
644	if (RT_SUCCESS(rc))
645	{
646	rc = vmmR0CallHostSetJmp(&pVCpu->vmm.s.CallHostR0JmpBuf, HWACCMR0RunGuestCode, pVM, pVCpu); /* this may resume code. */
647	int rc2 = HWACCMR0Leave(pVM, pVCpu);
648	AssertRC(rc2);
649	}
650	}
651	else
652	{
653	/* System is about to go into suspend mode; go back to ring 3. */
654	rc = VINF_EM_RAW_INTERRUPT;
655	}
656	pVCpu->vmm.s.iLastGZRc = rc;
657
658	ASMAtomicWriteU32(&pVCpu->idHostCpu, NIL_RTCPUID);
659	#ifdef VBOX_WITH_VMMR0_DISABLE_PREEMPTION
660	RTThreadPreemptRestore(&PreemptState);
661	#elif !defined(RT_OS_WINDOWS)
662	ASMSetFlags(uFlags);
663	#endif
664
665	#ifdef VBOX_WITH_STATISTICS
666	vmmR0RecordRC(pVM, pVCpu, rc);
667	#endif
668	/* No special action required for external interrupts, just return. */
669	break;
670	}
671
672	/*
673	* For profiling.
674	*/
675	case VMMR0_DO_NOP:
676	pVCpu->vmm.s.iLastGZRc = VINF_SUCCESS;
677	break;
678
679	/*
680	* Impossible.
681	*/
682	default:
683	AssertMsgFailed(("%#x\n", enmOperation));
684	pVCpu->vmm.s.iLastGZRc = VERR_NOT_SUPPORTED;
685	break;
686	}
687	}
688
689
690	/**
691	* Validates a session or VM session argument.
692	*
693	* @returns true / false accordingly.
694	* @param pVM The VM argument.
695	* @param pSession The session argument.
696	*/
697	DECLINLINE(bool) vmmR0IsValidSession(PVM pVM, PSUPDRVSESSION pClaimedSession, PSUPDRVSESSION pSession)
698	{
699	/* This must be set! */
700	if (!pSession)
701	return false;
702
703	/* Only one out of the two. */
704	if (pVM && pClaimedSession)
705	return false;
706	if (pVM)
707	pClaimedSession = pVM->pSession;
708	return pClaimedSession == pSession;
709	}
710
711
712	/**
713	* VMMR0EntryEx worker function, either called directly or when ever possible
714	* called thru a longjmp so we can exit safely on failure.
715	*
716	* @returns VBox status code.
717	* @param pVM The VM to operate on.
718	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
719	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
720	* @param enmOperation Which operation to execute.
721	* @param pReqHdr This points to a SUPVMMR0REQHDR packet. Optional.
722	* The support driver validates this if it's present.
723	* @param u64Arg Some simple constant argument.
724	* @param pSession The session of the caller.
725	* @remarks Assume called with interrupts _enabled_.
726	*/
727	static int vmmR0EntryExWorker(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReqHdr, uint64_t u64Arg, PSUPDRVSESSION pSession)
728	{
729	/*
730	* Common VM pointer validation.
731	*/
732	if (pVM)
733	{
734	if (RT_UNLIKELY( !VALID_PTR(pVM)
735	\|\| ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
736	{
737	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p! (op=%d)\n", pVM, enmOperation);
738	return VERR_INVALID_POINTER;
739	}
740	if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
741	\|\| pVM->enmVMState > VMSTATE_TERMINATED
742	\|\| pVM->pVMR0 != pVM))
743	{
744	SUPR0Printf("vmmR0EntryExWorker: Invalid pVM=%p:{enmVMState=%d, .pVMR0=%p}! (op=%d)\n",
745	pVM, pVM->enmVMState, pVM->pVMR0, enmOperation);
746	return VERR_INVALID_POINTER;
747	}
748
749	if (RT_UNLIKELY(idCpu >= pVM->cCPUs && idCpu != NIL_VMCPUID))
750	{
751	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu (%u vs cCPUs=%u)\n", idCpu, pVM->cCPUs);
752	return VERR_INVALID_PARAMETER;
753	}
754	}
755	else if (RT_UNLIKELY(idCpu != NIL_VMCPUID))
756	{
757	SUPR0Printf("vmmR0EntryExWorker: Invalid idCpu=%u\n", idCpu);
758	return VERR_INVALID_PARAMETER;
759	}
760
761
762	switch (enmOperation)
763	{
764	/*
765	* GVM requests
766	*/
767	case VMMR0_DO_GVMM_CREATE_VM:
768	if (pVM \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
769	return VERR_INVALID_PARAMETER;
770	return GVMMR0CreateVMReq((PGVMMCREATEVMREQ)pReqHdr);
771
772	case VMMR0_DO_GVMM_DESTROY_VM:
773	if (pReqHdr \|\| u64Arg)
774	return VERR_INVALID_PARAMETER;
775	return GVMMR0DestroyVM(pVM);
776
777	case VMMR0_DO_GVMM_REGISTER_VMCPU:
778	{
779	if (!pVM)
780	return VERR_INVALID_PARAMETER;
781	return GVMMR0RegisterVCpu(pVM, idCpu);
782	}
783
784	case VMMR0_DO_GVMM_SCHED_HALT:
785	if (pReqHdr)
786	return VERR_INVALID_PARAMETER;
787	return GVMMR0SchedHalt(pVM, idCpu, u64Arg);
788
789	case VMMR0_DO_GVMM_SCHED_WAKE_UP:
790	if (pReqHdr \|\| u64Arg)
791	return VERR_INVALID_PARAMETER;
792	return GVMMR0SchedWakeUp(pVM, idCpu);
793
794	case VMMR0_DO_GVMM_SCHED_POKE:
795	if (pReqHdr \|\| u64Arg)
796	return VERR_INVALID_PARAMETER;
797	return GVMMR0SchedPoke(pVM, idCpu);
798
799	case VMMR0_DO_GVMM_SCHED_WAKE_UP_AND_POKE_CPUS:
800	if (u64Arg)
801	return VERR_INVALID_PARAMETER;
802	return GVMMR0SchedWakeUpAndPokeCpusReq(pVM, (PGVMMSCHEDWAKEUPANDPOKECPUSREQ)pReqHdr);
803
804	case VMMR0_DO_GVMM_SCHED_POLL:
805	if (pReqHdr \|\| u64Arg > 1)
806	return VERR_INVALID_PARAMETER;
807	return GVMMR0SchedPoll(pVM, idCpu, !!u64Arg);
808
809	case VMMR0_DO_GVMM_QUERY_STATISTICS:
810	if (u64Arg)
811	return VERR_INVALID_PARAMETER;
812	return GVMMR0QueryStatisticsReq(pVM, (PGVMMQUERYSTATISTICSSREQ)pReqHdr);
813
814	case VMMR0_DO_GVMM_RESET_STATISTICS:
815	if (u64Arg)
816	return VERR_INVALID_PARAMETER;
817	return GVMMR0ResetStatisticsReq(pVM, (PGVMMRESETSTATISTICSSREQ)pReqHdr);
818
819	/*
820	* Initialize the R0 part of a VM instance.
821	*/
822	case VMMR0_DO_VMMR0_INIT:
823	return vmmR0InitVM(pVM, (uint32_t)u64Arg);
824
825	/*
826	* Terminate the R0 part of a VM instance.
827	*/
828	case VMMR0_DO_VMMR0_TERM:
829	return VMMR0TermVM(pVM, NULL);
830
831	/*
832	* Attempt to enable hwacc mode and check the current setting.
833	*
834	*/
835	case VMMR0_DO_HWACC_ENABLE:
836	return HWACCMR0EnableAllCpus(pVM);
837
838	/*
839	* Setup the hardware accelerated raw-mode session.
840	*/
841	case VMMR0_DO_HWACC_SETUP_VM:
842	{
843	RTCCUINTREG fFlags = ASMIntDisableFlags();
844	int rc = HWACCMR0SetupVM(pVM);
845	ASMSetFlags(fFlags);
846	return rc;
847	}
848
849	/*
850	* Switch to RC to execute Hypervisor function.
851	*/
852	case VMMR0_DO_CALL_HYPERVISOR:
853	{
854	int rc;
855	bool fVTxDisabled;
856
857	/* Safety precaution as HWACCM can disable the switcher. */
858	Assert(!pVM->vmm.s.fSwitcherDisabled);
859	if (RT_UNLIKELY(pVM->vmm.s.fSwitcherDisabled))
860	return VERR_NOT_SUPPORTED;
861
862	#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
863	if (RT_UNLIKELY(!PGMGetHyperCR3(VMMGetCpu0(pVM))))
864	return VERR_PGM_NO_CR3_SHADOW_ROOT;
865	#endif
866
867	RTCCUINTREG fFlags = ASMIntDisableFlags();
868
869	/* We might need to disable VT-x if the active switcher turns off paging. */
870	rc = HWACCMR0EnterSwitcher(pVM, &fVTxDisabled);
871	if (RT_FAILURE(rc))
872	return rc;
873
874	rc = pVM->vmm.s.pfnHostToGuestR0(pVM);
875
876	/* Re-enable VT-x if previously turned off. */
877	HWACCMR0LeaveSwitcher(pVM, fVTxDisabled);
878
879	/** @todo dispatch interrupts? */
880	ASMSetFlags(fFlags);
881	return rc;
882	}
883
884	/*
885	* PGM wrappers.
886	*/
887	case VMMR0_DO_PGM_ALLOCATE_HANDY_PAGES:
888	if (idCpu == NIL_VMCPUID)
889	return VERR_INVALID_CPU_ID;
890	return PGMR0PhysAllocateHandyPages(pVM, &pVM->aCpus[idCpu]);
891
892	/*
893	* GMM wrappers.
894	*/
895	case VMMR0_DO_GMM_INITIAL_RESERVATION:
896	if (u64Arg)
897	return VERR_INVALID_PARAMETER;
898	return GMMR0InitialReservationReq(pVM, idCpu, (PGMMINITIALRESERVATIONREQ)pReqHdr);
899
900	case VMMR0_DO_GMM_UPDATE_RESERVATION:
901	if (u64Arg)
902	return VERR_INVALID_PARAMETER;
903	return GMMR0UpdateReservationReq(pVM, idCpu, (PGMMUPDATERESERVATIONREQ)pReqHdr);
904
905	case VMMR0_DO_GMM_ALLOCATE_PAGES:
906	if (u64Arg)
907	return VERR_INVALID_PARAMETER;
908	return GMMR0AllocatePagesReq(pVM, idCpu, (PGMMALLOCATEPAGESREQ)pReqHdr);
909
910	case VMMR0_DO_GMM_FREE_PAGES:
911	if (u64Arg)
912	return VERR_INVALID_PARAMETER;
913	return GMMR0FreePagesReq(pVM, idCpu, (PGMMFREEPAGESREQ)pReqHdr);
914
915	case VMMR0_DO_GMM_BALLOONED_PAGES:
916	if (u64Arg)
917	return VERR_INVALID_PARAMETER;
918	return GMMR0BalloonedPagesReq(pVM, idCpu, (PGMMBALLOONEDPAGESREQ)pReqHdr);
919
920	case VMMR0_DO_GMM_DEFLATED_BALLOON:
921	if (pReqHdr)
922	return VERR_INVALID_PARAMETER;
923	return GMMR0DeflatedBalloon(pVM, idCpu, (uint32_t)u64Arg);
924
925	case VMMR0_DO_GMM_MAP_UNMAP_CHUNK:
926	if (u64Arg)
927	return VERR_INVALID_PARAMETER;
928	return GMMR0MapUnmapChunkReq(pVM, idCpu, (PGMMMAPUNMAPCHUNKREQ)pReqHdr);
929
930	case VMMR0_DO_GMM_SEED_CHUNK:
931	if (pReqHdr)
932	return VERR_INVALID_PARAMETER;
933	return GMMR0SeedChunk(pVM, idCpu, (RTR3PTR)u64Arg);
934
935	/*
936	* A quick GCFGM mock-up.
937	*/
938	/** @todo GCFGM with proper access control, ring-3 management interface and all that. */
939	case VMMR0_DO_GCFGM_SET_VALUE:
940	case VMMR0_DO_GCFGM_QUERY_VALUE:
941	{
942	if (pVM \|\| !pReqHdr \|\| u64Arg \|\| idCpu != NIL_VMCPUID)
943	return VERR_INVALID_PARAMETER;
944	PGCFGMVALUEREQ pReq = (PGCFGMVALUEREQ)pReqHdr;
945	if (pReq->Hdr.cbReq != sizeof(*pReq))
946	return VERR_INVALID_PARAMETER;
947	int rc;
948	if (enmOperation == VMMR0_DO_GCFGM_SET_VALUE)
949	{
950	rc = GVMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
951	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
952	// rc = GMMR0SetConfig(pReq->pSession, &pReq->szName[0], pReq->u64Value);
953	}
954	else
955	{
956	rc = GVMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
957	//if (rc == VERR_CFGM_VALUE_NOT_FOUND)
958	// rc = GMMR0QueryConfig(pReq->pSession, &pReq->szName[0], &pReq->u64Value);
959	}
960	return rc;
961	}
962
963
964	/*
965	* Requests to the internal networking service.
966	*/
967	case VMMR0_DO_INTNET_OPEN:
968	{
969	PINTNETOPENREQ pReq = (PINTNETOPENREQ)pReqHdr;
970	if (u64Arg \|\| !pReq \|\| !vmmR0IsValidSession(pVM, pReq->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
971	return VERR_INVALID_PARAMETER;
972	if (!g_pIntNet)
973	return VERR_NOT_SUPPORTED;
974	return INTNETR0OpenReq(g_pIntNet, pSession, pReq);
975	}
976
977	case VMMR0_DO_INTNET_IF_CLOSE:
978	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFCLOSEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
979	return VERR_INVALID_PARAMETER;
980	if (!g_pIntNet)
981	return VERR_NOT_SUPPORTED;
982	return INTNETR0IfCloseReq(g_pIntNet, pSession, (PINTNETIFCLOSEREQ)pReqHdr);
983
984	case VMMR0_DO_INTNET_IF_GET_RING3_BUFFER:
985	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFGETRING3BUFFERREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
986	return VERR_INVALID_PARAMETER;
987	if (!g_pIntNet)
988	return VERR_NOT_SUPPORTED;
989	return INTNETR0IfGetRing3BufferReq(g_pIntNet, pSession, (PINTNETIFGETRING3BUFFERREQ)pReqHdr);
990
991	case VMMR0_DO_INTNET_IF_SET_PROMISCUOUS_MODE:
992	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
993	return VERR_INVALID_PARAMETER;
994	if (!g_pIntNet)
995	return VERR_NOT_SUPPORTED;
996	return INTNETR0IfSetPromiscuousModeReq(g_pIntNet, pSession, (PINTNETIFSETPROMISCUOUSMODEREQ)pReqHdr);
997
998	case VMMR0_DO_INTNET_IF_SET_MAC_ADDRESS:
999	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETMACADDRESSREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1000	return VERR_INVALID_PARAMETER;
1001	if (!g_pIntNet)
1002	return VERR_NOT_SUPPORTED;
1003	return INTNETR0IfSetMacAddressReq(g_pIntNet, pSession, (PINTNETIFSETMACADDRESSREQ)pReqHdr);
1004
1005	case VMMR0_DO_INTNET_IF_SET_ACTIVE:
1006	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSETACTIVEREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1007	return VERR_INVALID_PARAMETER;
1008	if (!g_pIntNet)
1009	return VERR_NOT_SUPPORTED;
1010	return INTNETR0IfSetActiveReq(g_pIntNet, pSession, (PINTNETIFSETACTIVEREQ)pReqHdr);
1011
1012	case VMMR0_DO_INTNET_IF_SEND:
1013	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFSENDREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1014	return VERR_INVALID_PARAMETER;
1015	if (!g_pIntNet)
1016	return VERR_NOT_SUPPORTED;
1017	return INTNETR0IfSendReq(g_pIntNet, pSession, (PINTNETIFSENDREQ)pReqHdr);
1018
1019	case VMMR0_DO_INTNET_IF_WAIT:
1020	if (u64Arg \|\| !pReqHdr \|\| !vmmR0IsValidSession(pVM, ((PINTNETIFWAITREQ)pReqHdr)->pSession, pSession) \|\| idCpu != NIL_VMCPUID)
1021	return VERR_INVALID_PARAMETER;
1022	if (!g_pIntNet)
1023	return VERR_NOT_SUPPORTED;
1024	return INTNETR0IfWaitReq(g_pIntNet, pSession, (PINTNETIFWAITREQ)pReqHdr);
1025
1026	/*
1027	* For profiling.
1028	*/
1029	case VMMR0_DO_NOP:
1030	case VMMR0_DO_SLOW_NOP:
1031	return VINF_SUCCESS;
1032
1033	/*
1034	* For testing Ring-0 APIs invoked in this environment.
1035	*/
1036	case VMMR0_DO_TESTS:
1037	/** @todo make new test */
1038	return VINF_SUCCESS;
1039
1040
1041	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
1042	case VMMR0_DO_TEST_SWITCHER3264:
1043	if (idCpu == NIL_VMCPUID)
1044	return VERR_INVALID_CPU_ID;
1045	return HWACCMR0TestSwitcher3264(pVM);
1046	#endif
1047	default:
1048	/*
1049	* We're returning VERR_NOT_SUPPORT here so we've got something else
1050	* than -1 which the interrupt gate glue code might return.
1051	*/
1052	Log(("operation %#x is not supported\n", enmOperation));
1053	return VERR_NOT_SUPPORTED;
1054	}
1055	}
1056
1057
1058	/**
1059	* Argument for vmmR0EntryExWrapper containing the arguments for VMMR0EntryEx.
1060	*/
1061	typedef struct VMMR0ENTRYEXARGS
1062	{
1063	PVM pVM;
1064	VMCPUID idCpu;
1065	VMMR0OPERATION enmOperation;
1066	PSUPVMMR0REQHDR pReq;
1067	uint64_t u64Arg;
1068	PSUPDRVSESSION pSession;
1069	} VMMR0ENTRYEXARGS;
1070	/** Pointer to a vmmR0EntryExWrapper argument package. */
1071	typedef VMMR0ENTRYEXARGS *PVMMR0ENTRYEXARGS;
1072
1073	/**
1074	* This is just a longjmp wrapper function for VMMR0EntryEx calls.
1075	*
1076	* @returns VBox status code.
1077	* @param pvArgs The argument package
1078	*/
1079	static int vmmR0EntryExWrapper(void *pvArgs)
1080	{
1081	return vmmR0EntryExWorker(((PVMMR0ENTRYEXARGS)pvArgs)->pVM,
1082	((PVMMR0ENTRYEXARGS)pvArgs)->idCpu,
1083	((PVMMR0ENTRYEXARGS)pvArgs)->enmOperation,
1084	((PVMMR0ENTRYEXARGS)pvArgs)->pReq,
1085	((PVMMR0ENTRYEXARGS)pvArgs)->u64Arg,
1086	((PVMMR0ENTRYEXARGS)pvArgs)->pSession);
1087	}
1088
1089
1090	/**
1091	* The Ring 0 entry point, called by the support library (SUP).
1092	*
1093	* @returns VBox status code.
1094	* @param pVM The VM to operate on.
1095	* @param idCpu Virtual CPU ID argument. Must be NIL_VMCPUID if pVM
1096	* is NIL_RTR0PTR, and may be NIL_VMCPUID if it isn't
1097	* @param enmOperation Which operation to execute.
1098	* @param pReq This points to a SUPVMMR0REQHDR packet. Optional.
1099	* @param u64Arg Some simple constant argument.
1100	* @param pSession The session of the caller.
1101	* @remarks Assume called with interrupts _enabled_.
1102	*/
1103	VMMR0DECL(int) VMMR0EntryEx(PVM pVM, VMCPUID idCpu, VMMR0OPERATION enmOperation, PSUPVMMR0REQHDR pReq, uint64_t u64Arg, PSUPDRVSESSION pSession)
1104	{
1105	/*
1106	* Requests that should only happen on the EMT thread will be
1107	* wrapped in a setjmp so we can assert without causing trouble.
1108	*/
1109	if ( VALID_PTR(pVM)
1110	&& pVM->pVMR0
1111	&& idCpu < pVM->cCPUs)
1112	{
1113	switch (enmOperation)
1114	{
1115	/* These might/will be called before VMMR3Init. */
1116	case VMMR0_DO_GMM_INITIAL_RESERVATION:
1117	case VMMR0_DO_GMM_UPDATE_RESERVATION:
1118	case VMMR0_DO_GMM_ALLOCATE_PAGES:
1119	case VMMR0_DO_GMM_FREE_PAGES:
1120	case VMMR0_DO_GMM_BALLOONED_PAGES:
1121	case VMMR0_DO_GMM_DEFLATED_BALLOON:
1122	/* On the mac we might not have a valid jmp buf, so check these as well. */
1123	case VMMR0_DO_VMMR0_INIT:
1124	case VMMR0_DO_VMMR0_TERM:
1125	{
1126	PVMCPU pVCpu = &pVM->aCpus[idCpu];
1127
1128	if (!pVCpu->vmm.s.CallHostR0JmpBuf.pvSavedStack)
1129	break;
1130
1131	/** @todo validate this EMT claim... GVM knows. */
1132	VMMR0ENTRYEXARGS Args;
1133	Args.pVM = pVM;
1134	Args.idCpu = idCpu;
1135	Args.enmOperation = enmOperation;
1136	Args.pReq = pReq;
1137	Args.u64Arg = u64Arg;
1138	Args.pSession = pSession;
1139	return vmmR0CallHostSetJmpEx(&pVCpu->vmm.s.CallHostR0JmpBuf, vmmR0EntryExWrapper, &Args);
1140	}
1141
1142	default:
1143	break;
1144	}
1145	}
1146	return vmmR0EntryExWorker(pVM, idCpu, enmOperation, pReq, u64Arg, pSession);
1147	}
1148
1149	/**
1150	* Internal R0 logger worker: Flush logger.
1151	*
1152	* @param pLogger The logger instance to flush.
1153	* @remark This function must be exported!
1154	*/
1155	VMMR0DECL(void) vmmR0LoggerFlush(PRTLOGGER pLogger)
1156	{
1157	#ifdef LOG_ENABLED
1158	/*
1159	* Convert the pLogger into a VM handle and 'call' back to Ring-3.
1160	* (This is a bit paranoid code.)
1161	*/
1162	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1163	if ( !VALID_PTR(pR0Logger)
1164	\|\| !VALID_PTR(pR0Logger + 1)
1165	\|\| pLogger->u32Magic != RTLOGGER_MAGIC)
1166	{
1167	# ifdef DEBUG
1168	SUPR0Printf("vmmR0LoggerFlush: pLogger=%p!\n", pLogger);
1169	# endif
1170	return;
1171	}
1172	if (pR0Logger->fFlushingDisabled)
1173	return; /* quietly */
1174
1175	PVM pVM = pR0Logger->pVM;
1176	if ( !VALID_PTR(pVM)
1177	\|\| pVM->pVMR0 != pVM)
1178	{
1179	# ifdef DEBUG
1180	SUPR0Printf("vmmR0LoggerFlush: pVM=%p! pVMR0=%p! pLogger=%p\n", pVM, pVM->pVMR0, pLogger);
1181	# endif
1182	return;
1183	}
1184
1185	PVMCPU pVCpu = VMMGetCpu(pVM);
1186
1187	/*
1188	* Check that the jump buffer is armed.
1189	*/
1190	# ifdef RT_ARCH_X86
1191	if ( !pVCpu->vmm.s.CallHostR0JmpBuf.eip
1192	\|\| pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1193	# else
1194	if ( !pVCpu->vmm.s.CallHostR0JmpBuf.rip
1195	\|\| pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1196	# endif
1197	{
1198	# ifdef DEBUG
1199	SUPR0Printf("vmmR0LoggerFlush: Jump buffer isn't armed!\n");
1200	# endif
1201	return;
1202	}
1203	VMMR0CallHost(pVM, VMMCALLHOST_VMM_LOGGER_FLUSH, 0);
1204	#endif
1205	}
1206
1207	/**
1208	* Interal R0 logger worker: Custom prefix.
1209	*
1210	* @returns Number of chars written.
1211	*
1212	* @param pLogger The logger instance.
1213	* @param pchBuf The output buffer.
1214	* @param cchBuf The size of the buffer.
1215	* @param pvUser User argument (ignored).
1216	*/
1217	VMMR0DECL(size_t) vmmR0LoggerPrefix(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1218	{
1219	NOREF(pvUser);
1220	#ifdef LOG_ENABLED
1221	PVMMR0LOGGER pR0Logger = (PVMMR0LOGGER)((uintptr_t)pLogger - RT_OFFSETOF(VMMR0LOGGER, Logger));
1222	if ( !VALID_PTR(pR0Logger)
1223	\|\| !VALID_PTR(pR0Logger + 1)
1224	\|\| pLogger->u32Magic != RTLOGGER_MAGIC
1225	\|\| cchBuf < 2)
1226	return 0;
1227
1228	static const char s_szHex[17] = "0123456789abcdef";
1229	VMCPUID const idCpu = pR0Logger->idCpu;
1230	pchBuf[1] = s_szHex[ idCpu & 15];
1231	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1232
1233	return 2;
1234	#else
1235	return 0;
1236	#endif
1237	}
1238
1239
1240	#ifdef LOG_ENABLED
1241	/**
1242	* Disables flushing of the ring-0 debug log.
1243	*
1244	* @param pVCpu The shared virtual cpu structure.
1245	*/
1246	VMMR0DECL(void) VMMR0LogFlushDisable(PVMCPU pVCpu)
1247	{
1248	PVM pVM = pVCpu->pVMR0;
1249	if (pVCpu->vmm.s.pR0LoggerR0)
1250	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = true;
1251	}
1252
1253
1254	/**
1255	* Enables flushing of the ring-0 debug log.
1256	*
1257	* @param pVCpu The shared virtual cpu structure.
1258	*/
1259	VMMR0DECL(void) VMMR0LogFlushEnable(PVMCPU pVCpu)
1260	{
1261	PVM pVM = pVCpu->pVMR0;
1262	if (pVCpu->vmm.s.pR0LoggerR0)
1263	pVCpu->vmm.s.pR0LoggerR0->fFlushingDisabled = false;
1264	}
1265	#endif
1266
1267	/**
1268	* Jump back to ring-3 if we're the EMT and the longjmp is armed.
1269	*
1270	* @returns true if the breakpoint should be hit, false if it should be ignored.
1271	*/
1272	DECLEXPORT(bool) RTCALL RTAssertShouldPanic(void)
1273	{
1274	#if 0
1275	return true;
1276	#else
1277	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1278	if (pVM)
1279	{
1280	PVMCPU pVCpu = VMMGetCpu(pVM);
1281
1282	#ifdef RT_ARCH_X86
1283	if ( pVCpu->vmm.s.CallHostR0JmpBuf.eip
1284	&& !pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1285	#else
1286	if ( pVCpu->vmm.s.CallHostR0JmpBuf.rip
1287	&& !pVCpu->vmm.s.CallHostR0JmpBuf.fInRing3Call)
1288	#endif
1289	{
1290	int rc = VMMR0CallHost(pVM, VMMCALLHOST_VM_R0_ASSERTION, 0);
1291	return RT_FAILURE_NP(rc);
1292	}
1293	}
1294	#ifdef RT_OS_LINUX
1295	return true;
1296	#else
1297	return false;
1298	#endif
1299	#endif
1300	}
1301
1302
1303	/**
1304	* Override this so we can push it up to ring-3.
1305	*
1306	* @param pszExpr Expression. Can be NULL.
1307	* @param uLine Location line number.
1308	* @param pszFile Location file name.
1309	* @param pszFunction Location function name.
1310	*/
1311	DECLEXPORT(void) RTCALL AssertMsg1(const char pszExpr, unsigned uLine, const char pszFile, const char *pszFunction)
1312	{
1313	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1314	SUPR0Printf("\n!!R0-Assertion Failed!!\n"
1315	"Expression: %s\n"
1316	"Location : %s(%d) %s\n",
1317	pszExpr, pszFile, uLine, pszFunction);
1318	#endif
1319	LogAlways(("\n!!R0-Assertion Failed!!\n"
1320	"Expression: %s\n"
1321	"Location : %s(%d) %s\n",
1322	pszExpr, pszFile, uLine, pszFunction));
1323
1324	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1325	if (pVM)
1326	RTStrPrintf(pVM->vmm.s.szRing0AssertMsg1, sizeof(pVM->vmm.s.szRing0AssertMsg1),
1327	"\n!!R0-Assertion Failed!!\n"
1328	"Expression: %s\n"
1329	"Location : %s(%d) %s\n",
1330	pszExpr, pszFile, uLine, pszFunction);
1331	#ifdef RT_OS_DARWIN
1332	RTAssertMsg1(pszExpr, uLine, pszFile, pszFunction);
1333	#endif
1334	}
1335
1336
1337	/**
1338	* Callback for RTLogFormatV which writes to the ring-3 log port.
1339	* See PFNLOGOUTPUT() for details.
1340	*/
1341	static DECLCALLBACK(size_t) rtLogOutput(void pv, const char pachChars, size_t cbChars)
1342	{
1343	for (size_t i = 0; i < cbChars; i++)
1344	{
1345	#if !defined(DEBUG_sandervl) && !defined(RT_OS_DARWIN)
1346	SUPR0Printf("%c", pachChars[i]);
1347	#endif
1348	LogAlways(("%c", pachChars[i]));
1349	}
1350
1351	return cbChars;
1352	}
1353
1354
1355	DECLEXPORT(void) RTCALL AssertMsg2(const char *pszFormat, ...)
1356	{
1357	va_list va;
1358
1359	PRTLOGGER pLog = RTLogDefaultInstance(); /** @todo we want this for release as well! */
1360	if (pLog)
1361	{
1362	va_start(va, pszFormat);
1363	RTLogFormatV(rtLogOutput, pLog, pszFormat, va);
1364	va_end(va);
1365
1366	PVM pVM = GVMMR0GetVMByEMT(NIL_RTNATIVETHREAD);
1367	if (pVM)
1368	{
1369	va_start(va, pszFormat);
1370	RTStrPrintfV(pVM->vmm.s.szRing0AssertMsg2, sizeof(pVM->vmm.s.szRing0AssertMsg2), pszFormat, va);
1371	va_end(va);
1372	}
1373	}
1374
1375	#ifdef RT_OS_DARWIN
1376	va_start(va, pszFormat);
1377	RTAssertMsg2V(pszFormat, va);
1378	va_end(va);
1379	#endif
1380	}
1381

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source: vbox/trunk/src/VBox/VMM/VMMR0/VMMR0.cpp@ 20871

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