NEMR3.cpp@ 107227

Last change on this file since 107227 was 107227, checked in by vboxsync, 6 weeks ago
VMM: Cleaning up ARMv8 / x86 split. jiraref:VBP-1470
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 19.2 KB

Line
1	/* $Id: NEMR3.cpp 107227 2024-12-04 15:20:14Z vboxsync $ */
2	/** @file
3	* NEM - Native execution manager.
4	*/
5
6	/*
7	* Copyright (C) 2018-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	/** @page pg_nem NEM - Native Execution Manager.
29	*
30	* This is an alternative execution manage to HM and raw-mode. On one host
31	* (Windows) we're forced to use this, on the others we just do it because we
32	* can. Since this is host specific in nature, information about an
33	* implementation is contained in the NEMR3Native-xxxx.cpp files.
34	*
35	* @ref pg_nem_win
36	*/
37
38
39	/*********************************************************************************************************************************
40	* Header Files *
41	*********************************************************************************************************************************/
42	#define LOG_GROUP LOG_GROUP_NEM
43	#include <VBox/vmm/dbgf.h>
44	#include <VBox/vmm/nem.h>
45	#include <VBox/vmm/gim.h>
46	#include "NEMInternal.h"
47	#include <VBox/vmm/vm.h>
48	#include <VBox/vmm/uvm.h>
49	#include <VBox/err.h>
50
51	#include <iprt/asm.h>
52	#include <iprt/string.h>
53
54
55
56	/**
57	* Basic init and configuration reading.
58	*
59	* Always call NEMR3Term after calling this.
60	*
61	* @returns VBox status code.
62	* @param pVM The cross context VM structure.
63	*/
64	VMMR3_INT_DECL(int) NEMR3InitConfig(PVM pVM)
65	{
66	LogFlow(("NEMR3Init\n"));
67
68	/*
69	* Assert alignment and sizes.
70	*/
71	AssertCompileMemberAlignment(VM, nem.s, 64);
72	AssertCompile(sizeof(pVM->nem.s) <= sizeof(pVM->nem.padding));
73
74	/*
75	* Initialize state info so NEMR3Term will always be happy.
76	* No returning prior to setting magics!
77	*/
78	pVM->nem.s.u32Magic = NEM_MAGIC;
79	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
80	{
81	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
82	pVCpu->nem.s.u32Magic = NEMCPU_MAGIC;
83	}
84
85	/*
86	* Read configuration.
87	*/
88	PCFGMNODE pCfgNem = CFGMR3GetChild(CFGMR3GetRoot(pVM), "NEM/");
89
90	/*
91	* Validate the NEM settings.
92	*/
93	int rc = CFGMR3ValidateConfig(pCfgNem,
94	"/NEM/",
95	"Enabled"
96	"\|Allow64BitGuests"
97	"\|LovelyMesaDrvWorkaround"
98	#ifdef RT_OS_WINDOWS
99	"\|UseRing0Runloop"
100	#elif defined(RT_OS_DARWIN)
101	"\|VmxPleGap"
102	"\|VmxPleWindow"
103	"\|VmxLbr"
104	#endif
105	#ifdef VBOX_VMM_TARGET_ARMV8
106	"\|VTimerInterrupt"
107	#endif
108	,
109	"" /* pszValidNodes /, "NEM" / pszWho /, 0 / uInstance */);
110	if (RT_FAILURE(rc))
111	return rc;
112
113	/** @cfgm{/NEM/NEMEnabled, bool, true}
114	* Whether NEM is enabled. */
115	rc = CFGMR3QueryBoolDef(pCfgNem, "Enabled", &pVM->nem.s.fEnabled, true);
116	AssertLogRelRCReturn(rc, rc);
117
118
119	#ifdef VBOX_WITH_64_BITS_GUESTS
120	/** @cfgm{/NEM/Allow64BitGuests, bool, 32-bit:false, 64-bit:true}
121	* Enables AMD64 CPU features.
122	* On 32-bit hosts this isn't default and require host CPU support. 64-bit hosts
123	* already have the support. */
124	rc = CFGMR3QueryBoolDef(pCfgNem, "Allow64BitGuests", &pVM->nem.s.fAllow64BitGuests, HC_ARCH_BITS == 64);
125	AssertLogRelRCReturn(rc, rc);
126	#else
127	pVM->nem.s.fAllow64BitGuests = false;
128	#endif
129
130	/** @cfgm{/NEM/LovelyMesaDrvWorkaround, bool, false}
131	* Workaround for mesa vmsvga 3d driver making incorrect assumptions about
132	* the hypervisor it is running under. */
133	bool f;
134	rc = CFGMR3QueryBoolDef(pCfgNem, "LovelyMesaDrvWorkaround", &f, false);
135	AssertLogRelRCReturn(rc, rc);
136	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
137	{
138	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
139	pVCpu->nem.s.fTrapXcptGpForLovelyMesaDrv = f;
140	}
141
142	#ifdef VBOX_VMM_TARGET_ARMV8
143	/** @cfgm{/NEM/VTimerInterrupt, uint32_t}
144	* Specifies the interrupt identifier for the VTimer. */
145	rc = CFGMR3QueryU32(pCfgNem, "VTimerInterrupt", &pVM->nem.s.u32GicPpiVTimer);
146	AssertLogRelRCReturn(rc, rc);
147	#endif
148
149	return VINF_SUCCESS;
150	}
151
152
153	/**
154	* This is called by HMR3Init() when HM cannot be used.
155	*
156	* Sets VM::bMainExecutionEngine to VM_EXEC_ENGINE_NATIVE_API if we can use a
157	* native hypervisor API to execute the VM.
158	*
159	* @returns VBox status code.
160	* @param pVM The cross context VM structure.
161	* @param fFallback Whether this is a fallback call. Cleared if the VM is
162	* configured to use NEM instead of HM.
163	* @param fForced Whether /HM/HMForced was set. If set and we fail to
164	* enable NEM, we'll return a failure status code.
165	* Otherwise we'll assume HMR3Init falls back on raw-mode.
166	*/
167	VMMR3_INT_DECL(int) NEMR3Init(PVM pVM, bool fFallback, bool fForced)
168	{
169	Assert(pVM->bMainExecutionEngine != VM_EXEC_ENGINE_NATIVE_API);
170	int rc;
171	if (pVM->nem.s.fEnabled)
172	{
173	#ifdef VBOX_WITH_NATIVE_NEM
174	rc = nemR3NativeInit(pVM, fFallback, fForced);
175	ASMCompilerBarrier(); /* May have changed bMainExecutionEngine. */
176	#else
177	RT_NOREF(fFallback);
178	rc = VINF_SUCCESS;
179	#endif
180	if (RT_SUCCESS(rc))
181	{
182	if (pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API)
183	{
184	#ifndef VBOX_WITH_HWVIRT /* Don't complain if there are no other alternatives. */
185	# ifdef RT_OS_WINDOWS /* The WHv* API is extremely slow at handling VM exits. The AppleHv and
186	KVM APIs are much faster, thus the different mode name. :-) */
187	LogRel(("NEM:\n"
188	"NEM: NEMR3Init: Snail execution mode is active!\n"
189	"NEM: Note! VirtualBox is not able to run at its full potential in this execution mode.\n"
190	"NEM: To see VirtualBox run at max speed you need to disable all Windows features\n"
191	"NEM: making use of Hyper-V. That is a moving target, so google how and carefully\n"
192	"NEM: consider the consequences of disabling these features.\n"
193	"NEM:\n"));
194	# else
195	LogRel(("NEM:\n"
196	"NEM: NEMR3Init: Turtle execution mode is active!\n"
197	"NEM: Note! VirtualBox is not able to run at its full potential in this execution mode.\n"
198	"NEM:\n"));
199	# endif
200	#endif
201	}
202	else
203	{
204	LogRel(("NEM: NEMR3Init: Not available.\n"));
205	if (fForced)
206	rc = VERR_NEM_NOT_AVAILABLE;
207	}
208	}
209	else
210	LogRel(("NEM: NEMR3Init: Native init failed: %Rrc.\n", rc));
211	}
212	else
213	{
214	LogRel(("NEM: NEMR3Init: Disabled.\n"));
215	rc = fForced ? VERR_NEM_NOT_ENABLED : VINF_SUCCESS;
216	}
217	return rc;
218	}
219
220
221	/**
222	* Perform initialization that depends on CPUM working.
223	*
224	* This is a noop if NEM wasn't activated by a previous NEMR3Init() call.
225	*
226	* @returns VBox status code.
227	* @param pVM The cross context VM structure.
228	*/
229	VMMR3_INT_DECL(int) NEMR3InitAfterCPUM(PVM pVM)
230	{
231	int rc = VINF_SUCCESS;
232	if (pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API)
233	{
234	/*
235	* Do native after-CPUM init.
236	*/
237	#ifdef VBOX_WITH_NATIVE_NEM
238	rc = nemR3NativeInitAfterCPUM(pVM);
239	#else
240	RT_NOREF(pVM);
241	#endif
242	}
243	return rc;
244	}
245
246
247	/**
248	* Called when a init phase has completed.
249	*
250	* @returns VBox status code.
251	* @param pVM The cross context VM structure.
252	* @param enmWhat The phase that completed.
253	*/
254	VMMR3_INT_DECL(int) NEMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
255	{
256	/*
257	* Check if GIM needs #UD, since that applies to everyone.
258	*/
259	if (enmWhat == VMINITCOMPLETED_RING3)
260	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
261	{
262	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
263	pVCpu->nem.s.fGIMTrapXcptUD = GIMShouldTrapXcptUD(pVCpu);
264	}
265
266	/*
267	* Call native code.
268	*/
269	int rc = VINF_SUCCESS;
270	#ifdef VBOX_WITH_NATIVE_NEM
271	if (pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API)
272	rc = nemR3NativeInitCompleted(pVM, enmWhat);
273	#else
274	RT_NOREF(pVM, enmWhat);
275	#endif
276	return rc;
277	}
278
279
280	/**
281	*
282	* @returns VBox status code.
283	* @param pVM The cross context VM structure.
284	*/
285	VMMR3_INT_DECL(int) NEMR3Term(PVM pVM)
286	{
287	AssertReturn(pVM->nem.s.u32Magic == NEM_MAGIC, VERR_WRONG_ORDER);
288	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
289	AssertReturn(pVM->apCpusR3[idCpu]->nem.s.u32Magic == NEMCPU_MAGIC, VERR_WRONG_ORDER);
290
291	/* Do native termination. */
292	int rc = VINF_SUCCESS;
293	#ifdef VBOX_WITH_NATIVE_NEM
294	if (pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API)
295	rc = nemR3NativeTerm(pVM);
296	#endif
297
298	/* Mark it as terminated. */
299	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
300	{
301	PVMCPU pVCpu = pVM->apCpusR3[idCpu];
302	pVCpu->nem.s.u32Magic = NEMCPU_MAGIC_DEAD;
303	}
304	pVM->nem.s.u32Magic = NEM_MAGIC_DEAD;
305	return rc;
306	}
307
308	/**
309	* External interface for querying whether native execution API is used.
310	*
311	* @returns true if NEM is being used, otherwise false.
312	* @param pUVM The user mode VM handle.
313	* @sa HMR3IsEnabled
314	*/
315	VMMR3DECL(bool) NEMR3IsEnabled(PUVM pUVM)
316	{
317	UVM_ASSERT_VALID_EXT_RETURN(pUVM, false);
318	PVM pVM = pUVM->pVM;
319	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
320	return VM_IS_NEM_ENABLED(pVM);
321	}
322
323
324	/**
325	* The VM is being reset.
326	*
327	* @param pVM The cross context VM structure.
328	*/
329	VMMR3_INT_DECL(void) NEMR3Reset(PVM pVM)
330	{
331	#ifdef VBOX_WITH_NATIVE_NEM
332	if (pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API)
333	nemR3NativeReset(pVM);
334	#else
335	RT_NOREF(pVM);
336	#endif
337	}
338
339
340	/**
341	* Resets a virtual CPU.
342	*
343	* Used to bring up secondary CPUs on SMP as well as CPU hot plugging.
344	*
345	* @param pVCpu The cross context virtual CPU structure to reset.
346	* @param fInitIpi Set if being reset due to INIT IPI.
347	*/
348	VMMR3_INT_DECL(void) NEMR3ResetCpu(PVMCPU pVCpu, bool fInitIpi)
349	{
350	#ifdef VBOX_WITH_NATIVE_NEM
351	if (pVCpu->pVMR3->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API)
352	nemR3NativeResetCpu(pVCpu, fInitIpi);
353	#else
354	RT_NOREF(pVCpu, fInitIpi);
355	#endif
356	}
357
358
359	/**
360	* Indicates to TM that TMTSCMODE_NATIVE_API should be used for TSC.
361	*
362	* @returns true if TMTSCMODE_NATIVE_API must be used, otherwise @c false.
363	* @param pVM The cross context VM structure.
364	*/
365	VMMR3_INT_DECL(bool) NEMR3NeedSpecialTscMode(PVM pVM)
366	{
367	#ifdef VBOX_WITH_NATIVE_NEM
368	if (VM_IS_NEM_ENABLED(pVM))
369	return true;
370	#else
371	RT_NOREF(pVM);
372	#endif
373	return false;
374	}
375
376
377	/**
378	* Gets the name of a generic NEM exit code.
379	*
380	* @returns Pointer to read only string if @a uExit is known, otherwise NULL.
381	* @param uExit The NEM exit to name.
382	*/
383	VMMR3DECL(const char *) NEMR3GetExitName(uint32_t uExit)
384	{
385	switch ((NEMEXITTYPE)uExit)
386	{
387	case NEMEXITTYPE_INTTERRUPT_WINDOW: return "NEM interrupt window";
388	case NEMEXITTYPE_HALT: return "NEM halt";
389
390	case NEMEXITTYPE_UNRECOVERABLE_EXCEPTION: return "NEM unrecoverable exception";
391	case NEMEXITTYPE_INVALID_VP_REGISTER_VALUE: return "NEM invalid vp register value";
392	case NEMEXITTYPE_XCPT_UD: return "NEM #UD";
393	case NEMEXITTYPE_XCPT_DB: return "NEM #DB";
394	case NEMEXITTYPE_XCPT_BP: return "NEM #BP";
395	case NEMEXITTYPE_CANCELED: return "NEM canceled";
396	case NEMEXITTYPE_MEMORY_ACCESS: return "NEM memory access";
397
398	case NEMEXITTYPE_INTERNAL_ERROR_EMULATION: return "NEM emulation IPE";
399	case NEMEXITTYPE_INTERNAL_ERROR_FATAL: return "NEM fatal IPE";
400	case NEMEXITTYPE_INTERRUPTED: return "NEM interrupted";
401	case NEMEXITTYPE_FAILED_ENTRY: return "NEM failed VT-x/AMD-V entry";
402
403	case NEMEXITTYPE_INVALID:
404	case NEMEXITTYPE_END:
405	break;
406	}
407
408	return NULL;
409	}
410
411
412	VMMR3_INT_DECL(VBOXSTRICTRC) NEMR3RunGC(PVM pVM, PVMCPU pVCpu)
413	{
414	Assert(VM_IS_NEM_ENABLED(pVM));
415	#ifdef VBOX_WITH_NATIVE_NEM
416	return nemR3NativeRunGC(pVM, pVCpu);
417	#else
418	NOREF(pVM); NOREF(pVCpu);
419	return VERR_INTERNAL_ERROR_3;
420	#endif
421	}
422
423
424	#ifndef VBOX_WITH_NATIVE_NEM
425	VMMR3_INT_DECL(bool) NEMR3CanExecuteGuest(PVM pVM, PVMCPU pVCpu)
426	{
427	RT_NOREF(pVM, pVCpu);
428	return false;
429	}
430	#endif
431
432
433	VMMR3_INT_DECL(bool) NEMR3SetSingleInstruction(PVM pVM, PVMCPU pVCpu, bool fEnable)
434	{
435	Assert(VM_IS_NEM_ENABLED(pVM));
436	#ifdef VBOX_WITH_NATIVE_NEM
437	return nemR3NativeSetSingleInstruction(pVM, pVCpu, fEnable);
438	#else
439	NOREF(pVM); NOREF(pVCpu); NOREF(fEnable);
440	return false;
441	#endif
442	}
443
444
445	VMMR3_INT_DECL(void) NEMR3NotifyFF(PVM pVM, PVMCPU pVCpu, uint32_t fFlags)
446	{
447	AssertLogRelReturnVoid(VM_IS_NEM_ENABLED(pVM));
448	#ifdef VBOX_WITH_NATIVE_NEM
449	nemR3NativeNotifyFF(pVM, pVCpu, fFlags);
450	#else
451	RT_NOREF(pVM, pVCpu, fFlags);
452	#endif
453	}
454
455	#ifndef VBOX_WITH_NATIVE_NEM
456
457	VMMR3_INT_DECL(void) NEMR3NotifySetA20(PVMCPU pVCpu, bool fEnabled)
458	{
459	RT_NOREF(pVCpu, fEnabled);
460	}
461
462	# ifdef VBOX_WITH_PGM_NEM_MODE
463
464	VMMR3_INT_DECL(bool) NEMR3IsMmio2DirtyPageTrackingSupported(PVM pVM)
465	{
466	RT_NOREF(pVM);
467	return false;
468	}
469
470
471	VMMR3_INT_DECL(int) NEMR3PhysMmio2QueryAndResetDirtyBitmap(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, uint32_t uNemRange,
472	void *pvBitmap, size_t cbBitmap)
473	{
474	RT_NOREF(pVM, GCPhys, cb, uNemRange, pvBitmap, cbBitmap);
475	AssertFailed();
476	return VERR_INTERNAL_ERROR_2;
477	}
478
479
480	VMMR3_INT_DECL(int) NEMR3NotifyPhysMmioExMapEarly(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS cb, uint32_t fFlags,
481	void pvRam, void pvMmio2, uint8_t pu2State, uint32_t puNemRange)
482	{
483	RT_NOREF(pVM, GCPhys, cb, fFlags, pvRam, pvMmio2, pu2State, puNemRange);
484	AssertFailed();
485	return VERR_INTERNAL_ERROR_2;
486	}
487
488	# endif /* VBOX_WITH_PGM_NEM_MODE */
489	#endif /* !VBOX_WITH_NATIVE_NEM */
490
491	/**
492	* Notification callback from DBGF when interrupt breakpoints or generic debug
493	* event settings changes.
494	*
495	* DBGF will call NEMR3NotifyDebugEventChangedPerCpu on each CPU afterwards, this
496	* function is just updating the VM globals.
497	*
498	* @param pVM The VM cross context VM structure.
499	* @thread EMT(0)
500	*/
501	VMMR3_INT_DECL(void) NEMR3NotifyDebugEventChanged(PVM pVM)
502	{
503	AssertLogRelReturnVoid(VM_IS_NEM_ENABLED(pVM));
504
505	#ifdef VBOX_WITH_NATIVE_NEM
506	/* Interrupts. */
507	bool fUseDebugLoop = pVM->dbgf.ro.cSoftIntBreakpoints > 0
508	\|\| pVM->dbgf.ro.cHardIntBreakpoints > 0;
509
510	/* CPU Exceptions. */
511	for (DBGFEVENTTYPE enmEvent = DBGFEVENT_XCPT_FIRST;
512	!fUseDebugLoop && enmEvent <= DBGFEVENT_XCPT_LAST;
513	enmEvent = (DBGFEVENTTYPE)(enmEvent + 1))
514	fUseDebugLoop = DBGF_IS_EVENT_ENABLED(pVM, enmEvent);
515
516	/* Common VM exits. */
517	for (DBGFEVENTTYPE enmEvent = DBGFEVENT_EXIT_FIRST;
518	!fUseDebugLoop && enmEvent <= DBGFEVENT_EXIT_LAST_COMMON;
519	enmEvent = (DBGFEVENTTYPE)(enmEvent + 1))
520	fUseDebugLoop = DBGF_IS_EVENT_ENABLED(pVM, enmEvent);
521
522	/* Done. */
523	pVM->nem.s.fUseDebugLoop = nemR3NativeNotifyDebugEventChanged(pVM, fUseDebugLoop);
524	#else
525	RT_NOREF(pVM);
526	#endif
527	}
528
529
530	/**
531	* Follow up notification callback to NEMR3NotifyDebugEventChanged for each CPU.
532	*
533	* NEM uses this to combine the decision made NEMR3NotifyDebugEventChanged with
534	* per CPU settings.
535	*
536	* @param pVM The VM cross context VM structure.
537	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
538	*/
539	VMMR3_INT_DECL(void) NEMR3NotifyDebugEventChangedPerCpu(PVM pVM, PVMCPU pVCpu)
540	{
541	AssertLogRelReturnVoid(VM_IS_NEM_ENABLED(pVM));
542
543	#ifdef VBOX_WITH_NATIVE_NEM
544	pVCpu->nem.s.fUseDebugLoop = nemR3NativeNotifyDebugEventChangedPerCpu(pVM, pVCpu,
545	pVCpu->nem.s.fSingleInstruction \| pVM->nem.s.fUseDebugLoop);
546	#else
547	RT_NOREF(pVM, pVCpu);
548	#endif
549	}
550
551
552	/**
553	* Disables a CPU ISA extension, like MONITOR/MWAIT.
554	*
555	* @returns VBox status code
556	* @param pVM The cross context VM structure.
557	* @param pszIsaExt The ISA extension name in the config tree.
558	*/
559	int nemR3DisableCpuIsaExt(PVM pVM, const char *pszIsaExt)
560	{
561	/*
562	* Get IsaExts config node under CPUM.
563	*/
564	PCFGMNODE pIsaExts = CFGMR3GetChild(CFGMR3GetRoot(pVM), "/CPUM/IsaExts");
565	if (!pIsaExts)
566	{
567	int rc = CFGMR3InsertNode(CFGMR3GetRoot(pVM), "/CPUM/IsaExts", &pIsaExts);
568	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("CFGMR3InsertNode: rc=%Rrc pszIsaExt=%s\n", rc, pszIsaExt), rc);
569	}
570
571	/*
572	* Look for a value by the given name (pszIsaExt).
573	*/
574	/* Integer values 1 (CPUMISAEXTCFG_ENABLED_SUPPORTED) and 9 (CPUMISAEXTCFG_ENABLED_PORTABLE) will be replaced. */
575	uint64_t u64Value;
576	int rc = CFGMR3QueryInteger(pIsaExts, pszIsaExt, &u64Value);
577	if (RT_SUCCESS(rc))
578	{
579	if (u64Value != 1 && u64Value != 9)
580	{
581	LogRel(("NEM: Not disabling IsaExt '%s', already configured with int value %lld\n", pszIsaExt, u64Value));
582	return VINF_SUCCESS;
583	}
584	CFGMR3RemoveValue(pIsaExts, pszIsaExt);
585	}
586	/* String value 'default', 'enabled' and 'portable' will be replaced. */
587	else if (rc == VERR_CFGM_NOT_INTEGER)
588	{
589	char szValue[32];
590	rc = CFGMR3QueryString(pIsaExts, pszIsaExt, szValue, sizeof(szValue));
591	AssertRCReturn(rc, VINF_SUCCESS);
592
593	if ( RTStrICmpAscii(szValue, "default") != 0
594	&& RTStrICmpAscii(szValue, "def") != 0
595	&& RTStrICmpAscii(szValue, "enabled") != 0
596	&& RTStrICmpAscii(szValue, "enable") != 0
597	&& RTStrICmpAscii(szValue, "on") != 0
598	&& RTStrICmpAscii(szValue, "yes") != 0
599	&& RTStrICmpAscii(szValue, "portable") != 0)
600	{
601	LogRel(("NEM: Not disabling IsaExt '%s', already configured with string value '%s'\n", pszIsaExt, szValue));
602	return VINF_SUCCESS;
603	}
604	CFGMR3RemoveValue(pIsaExts, pszIsaExt);
605	}
606	else
607	AssertLogRelMsgReturn(rc == VERR_CFGM_VALUE_NOT_FOUND, ("CFGMR3QueryInteger: rc=%Rrc pszIsaExt=%s\n", rc, pszIsaExt),
608	VERR_NEM_IPE_8);
609
610	/*
611	* Insert the disabling value.
612	*/
613	rc = CFGMR3InsertInteger(pIsaExts, pszIsaExt, 0 /* disabled */);
614	AssertLogRelMsgReturn(RT_SUCCESS(rc), ("CFGMR3InsertInteger: rc=%Rrc pszIsaExt=%s\n", rc, pszIsaExt), rc);
615
616	return VINF_SUCCESS;
617	}
618

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

source: vbox/trunk/src/VBox/VMM/VMMR3/NEMR3.cpp@ 107227

Download in other formats: