VM.cpp@ 71699

Last change on this file since 71699 was 71699, checked in by vboxsync, 7 years ago
SUPDrv,VBoxVMM: Require SSE2 to be present.
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1	/* $Id: VM.cpp 71699 2018-04-06 10:45:31Z vboxsync $ */
2	/** @file
3	* VM - Virtual Machine
4	*/
5
6	/*
7	* Copyright (C) 2006-2017 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/** @page pg_vm VM API
19	*
20	* This is the encapsulating bit. It provides the APIs that Main and VBoxBFE
21	* use to create a VMM instance for running a guest in. It also provides
22	* facilities for queuing request for execution in EMT (serialization purposes
23	* mostly) and for reporting error back to the VMM user (Main/VBoxBFE).
24	*
25	*
26	* @section sec_vm_design Design Critique / Things To Do
27	*
28	* In hindsight this component is a big design mistake, all this stuff really
29	* belongs in the VMM component. It just seemed like a kind of ok idea at a
30	* time when the VMM bit was a kind of vague. 'VM' also happened to be the name
31	* of the per-VM instance structure (see vm.h), so it kind of made sense.
32	* However as it turned out, VMM(.cpp) is almost empty all it provides in ring-3
33	* is some minor functionally and some "routing" services.
34	*
35	* Fixing this is just a matter of some more or less straight forward
36	* refactoring, the question is just when someone will get to it. Moving the EMT
37	* would be a good start.
38	*
39	*/
40
41
42	/*********************************************************************************************************************************
43	* Header Files *
44	*********************************************************************************************************************************/
45	#define LOG_GROUP LOG_GROUP_VM
46	#include <VBox/vmm/cfgm.h>
47	#include <VBox/vmm/vmm.h>
48	#include <VBox/vmm/gvmm.h>
49	#include <VBox/vmm/mm.h>
50	#include <VBox/vmm/cpum.h>
51	#include <VBox/vmm/selm.h>
52	#include <VBox/vmm/trpm.h>
53	#include <VBox/vmm/dbgf.h>
54	#include <VBox/vmm/pgm.h>
55	#include <VBox/vmm/pdmapi.h>
56	#include <VBox/vmm/pdmdev.h>
57	#include <VBox/vmm/pdmcritsect.h>
58	#include <VBox/vmm/em.h>
59	#include <VBox/vmm/iem.h>
60	#ifdef VBOX_WITH_REM
61	# include <VBox/vmm/rem.h>
62	#endif
63	#include <VBox/vmm/nem.h>
64	#include <VBox/vmm/apic.h>
65	#include <VBox/vmm/tm.h>
66	#include <VBox/vmm/stam.h>
67	#include <VBox/vmm/patm.h>
68	#include <VBox/vmm/csam.h>
69	#include <VBox/vmm/iom.h>
70	#include <VBox/vmm/ssm.h>
71	#include <VBox/vmm/ftm.h>
72	#include <VBox/vmm/hm.h>
73	#include <VBox/vmm/gim.h>
74	#include "VMInternal.h"
75	#include <VBox/vmm/vm.h>
76	#include <VBox/vmm/uvm.h>
77
78	#include <VBox/sup.h>
79	#if defined(VBOX_WITH_DTRACE_R3) && !defined(VBOX_WITH_NATIVE_DTRACE)
80	# include <VBox/VBoxTpG.h>
81	#endif
82	#include <VBox/dbg.h>
83	#include <VBox/err.h>
84	#include <VBox/param.h>
85	#include <VBox/log.h>
86	#include <iprt/assert.h>
87	#include <iprt/alloc.h>
88	#include <iprt/asm.h>
89	#include <iprt/env.h>
90	#include <iprt/string.h>
91	#include <iprt/time.h>
92	#include <iprt/semaphore.h>
93	#include <iprt/thread.h>
94	#include <iprt/uuid.h>
95
96
97	/*********************************************************************************************************************************
98	* Internal Functions *
99	*********************************************************************************************************************************/
100	static int vmR3CreateUVM(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, PUVM *ppUVM);
101	static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM);
102	static int vmR3ReadBaseConfig(PVM pVM, PUVM pUVM, uint32_t cCpus);
103	static int vmR3InitRing3(PVM pVM, PUVM pUVM);
104	static int vmR3InitRing0(PVM pVM);
105	#ifdef VBOX_WITH_RAW_MODE
106	static int vmR3InitRC(PVM pVM);
107	#endif
108	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat);
109	#ifdef LOG_ENABLED
110	static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser);
111	#endif
112	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait);
113	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew);
114	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
115	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...);
116	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF);
117	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
118	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(6, 7);
119
120
121	/**
122	* Do global VMM init.
123	*
124	* @returns VBox status code.
125	*/
126	VMMR3DECL(int) VMR3GlobalInit(void)
127	{
128	/*
129	* Only once.
130	*/
131	static bool volatile s_fDone = false;
132	if (s_fDone)
133	return VINF_SUCCESS;
134
135	#if defined(VBOX_WITH_DTRACE_R3) && !defined(VBOX_WITH_NATIVE_DTRACE)
136	SUPR3TracerRegisterModule(~(uintptr_t)0, "VBoxVMM", &g_VTGObjHeader, (uintptr_t)&g_VTGObjHeader,
137	SUP_TRACER_UMOD_FLAGS_SHARED);
138	#endif
139
140	/*
141	* We're done.
142	*/
143	s_fDone = true;
144	return VINF_SUCCESS;
145	}
146
147
148	/**
149	* Creates a virtual machine by calling the supplied configuration constructor.
150	*
151	* On successful returned the VM is powered, i.e. VMR3PowerOn() should be
152	* called to start the execution.
153	*
154	* @returns 0 on success.
155	* @returns VBox error code on failure.
156	* @param cCpus Number of virtual CPUs for the new VM.
157	* @param pVmm2UserMethods An optional method table that the VMM can use
158	* to make the user perform various action, like
159	* for instance state saving.
160	* @param pfnVMAtError Pointer to callback function for setting VM
161	* errors. This was added as an implicit call to
162	* VMR3AtErrorRegister() since there is no way the
163	* caller can get to the VM handle early enough to
164	* do this on its own.
165	* This is called in the context of an EMT.
166	* @param pvUserVM The user argument passed to pfnVMAtError.
167	* @param pfnCFGMConstructor Pointer to callback function for constructing the VM configuration tree.
168	* This is called in the context of an EMT0.
169	* @param pvUserCFGM The user argument passed to pfnCFGMConstructor.
170	* @param ppVM Where to optionally store the 'handle' of the
171	* created VM.
172	* @param ppUVM Where to optionally store the user 'handle' of
173	* the created VM, this includes one reference as
174	* if VMR3RetainUVM() was called. The caller
175	* MUST remember to pass the returned value to
176	* VMR3ReleaseUVM() once done with the handle.
177	*/
178	VMMR3DECL(int) VMR3Create(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods,
179	PFNVMATERROR pfnVMAtError, void *pvUserVM,
180	PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM,
181	PVM ppVM, PUVM ppUVM)
182	{
183	LogFlow(("VMR3Create: cCpus=%RU32 pVmm2UserMethods=%p pfnVMAtError=%p pvUserVM=%p pfnCFGMConstructor=%p pvUserCFGM=%p ppVM=%p ppUVM=%p\n",
184	cCpus, pVmm2UserMethods, pfnVMAtError, pvUserVM, pfnCFGMConstructor, pvUserCFGM, ppVM, ppUVM));
185
186	if (pVmm2UserMethods)
187	{
188	AssertPtrReturn(pVmm2UserMethods, VERR_INVALID_POINTER);
189	AssertReturn(pVmm2UserMethods->u32Magic == VMM2USERMETHODS_MAGIC, VERR_INVALID_PARAMETER);
190	AssertReturn(pVmm2UserMethods->u32Version == VMM2USERMETHODS_VERSION, VERR_INVALID_PARAMETER);
191	AssertPtrNullReturn(pVmm2UserMethods->pfnSaveState, VERR_INVALID_POINTER);
192	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyEmtInit, VERR_INVALID_POINTER);
193	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyEmtTerm, VERR_INVALID_POINTER);
194	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyPdmtInit, VERR_INVALID_POINTER);
195	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyPdmtTerm, VERR_INVALID_POINTER);
196	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff, VERR_INVALID_POINTER);
197	AssertReturn(pVmm2UserMethods->u32EndMagic == VMM2USERMETHODS_MAGIC, VERR_INVALID_PARAMETER);
198	}
199	AssertPtrNullReturn(pfnVMAtError, VERR_INVALID_POINTER);
200	AssertPtrNullReturn(pfnCFGMConstructor, VERR_INVALID_POINTER);
201	AssertPtrNullReturn(ppVM, VERR_INVALID_POINTER);
202	AssertPtrNullReturn(ppUVM, VERR_INVALID_POINTER);
203	AssertReturn(ppVM \|\| ppUVM, VERR_INVALID_PARAMETER);
204
205	/*
206	* Because of the current hackiness of the applications
207	* we'll have to initialize global stuff from here.
208	* Later the applications will take care of this in a proper way.
209	*/
210	static bool fGlobalInitDone = false;
211	if (!fGlobalInitDone)
212	{
213	int rc = VMR3GlobalInit();
214	if (RT_FAILURE(rc))
215	return rc;
216	fGlobalInitDone = true;
217	}
218
219	/*
220	* Validate input.
221	*/
222	AssertLogRelMsgReturn(cCpus > 0 && cCpus <= VMM_MAX_CPU_COUNT, ("%RU32\n", cCpus), VERR_TOO_MANY_CPUS);
223
224	/*
225	* Create the UVM so we can register the at-error callback
226	* and consolidate a bit of cleanup code.
227	*/
228	PUVM pUVM = NULL; /* shuts up gcc */
229	int rc = vmR3CreateUVM(cCpus, pVmm2UserMethods, &pUVM);
230	if (RT_FAILURE(rc))
231	return rc;
232	if (pfnVMAtError)
233	rc = VMR3AtErrorRegister(pUVM, pfnVMAtError, pvUserVM);
234	if (RT_SUCCESS(rc))
235	{
236	/*
237	* Initialize the support library creating the session for this VM.
238	*/
239	rc = SUPR3Init(&pUVM->vm.s.pSession);
240	if (RT_SUCCESS(rc))
241	{
242	/*
243	* Call vmR3CreateU in the EMT thread and wait for it to finish.
244	*
245	* Note! VMCPUID_ANY is used here because VMR3ReqQueueU would have trouble
246	* submitting a request to a specific VCPU without a pVM. So, to make
247	* sure init is running on EMT(0), vmR3EmulationThreadWithId makes sure
248	* that only EMT(0) is servicing VMCPUID_ANY requests when pVM is NULL.
249	*/
250	PVMREQ pReq;
251	rc = VMR3ReqCallU(pUVM, VMCPUID_ANY, &pReq, RT_INDEFINITE_WAIT, VMREQFLAGS_VBOX_STATUS,
252	(PFNRT)vmR3CreateU, 4, pUVM, cCpus, pfnCFGMConstructor, pvUserCFGM);
253	if (RT_SUCCESS(rc))
254	{
255	rc = pReq->iStatus;
256	VMR3ReqFree(pReq);
257	if (RT_SUCCESS(rc))
258	{
259	/*
260	* Success!
261	*/
262	if (ppVM)
263	*ppVM = pUVM->pVM;
264	if (ppUVM)
265	{
266	VMR3RetainUVM(pUVM);
267	*ppUVM = pUVM;
268	}
269	LogFlow(("VMR3Create: returns VINF_SUCCESS (pVM=%p, pUVM=%p\n", pUVM->pVM, pUVM));
270	return VINF_SUCCESS;
271	}
272	}
273	else
274	AssertMsgFailed(("VMR3ReqCallU failed rc=%Rrc\n", rc));
275
276	/*
277	* An error occurred during VM creation. Set the error message directly
278	* using the initial callback, as the callback list might not exist yet.
279	*/
280	const char *pszError;
281	switch (rc)
282	{
283	case VERR_VMX_IN_VMX_ROOT_MODE:
284	#ifdef RT_OS_LINUX
285	pszError = N_("VirtualBox can't operate in VMX root mode. "
286	"Please disable the KVM kernel extension, recompile your kernel and reboot");
287	#else
288	pszError = N_("VirtualBox can't operate in VMX root mode. Please close all other virtualization programs.");
289	#endif
290	break;
291
292	#ifndef RT_OS_DARWIN
293	case VERR_HM_CONFIG_MISMATCH:
294	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
295	"This hardware extension is required by the VM configuration");
296	break;
297	#endif
298
299	case VERR_SVM_IN_USE:
300	#ifdef RT_OS_LINUX
301	pszError = N_("VirtualBox can't enable the AMD-V extension. "
302	"Please disable the KVM kernel extension, recompile your kernel and reboot");
303	#else
304	pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs.");
305	#endif
306	break;
307
308	#ifdef RT_OS_LINUX
309	case VERR_SUPDRV_COMPONENT_NOT_FOUND:
310	pszError = N_("One of the kernel modules was not successfully loaded. Make sure "
311	"that no kernel modules from an older version of VirtualBox exist. "
312	"Then try to recompile and reload the kernel modules by executing "
313	"'/sbin/vboxconfig' as root");
314	break;
315	#endif
316
317	case VERR_RAW_MODE_INVALID_SMP:
318	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
319	"VirtualBox requires this hardware extension to emulate more than one "
320	"guest CPU");
321	break;
322
323	case VERR_SUPDRV_KERNEL_TOO_OLD_FOR_VTX:
324	#ifdef RT_OS_LINUX
325	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
326	"extension. Either upgrade your kernel to Linux 2.6.13 or later or disable "
327	"the VT-x extension in the VM settings. Note that without VT-x you have "
328	"to reduce the number of guest CPUs to one");
329	#else
330	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
331	"extension. Either upgrade your kernel or disable the VT-x extension in the "
332	"VM settings. Note that without VT-x you have to reduce the number of guest "
333	"CPUs to one");
334	#endif
335	break;
336
337	case VERR_PDM_DEVICE_NOT_FOUND:
338	pszError = N_("A virtual device is configured in the VM settings but the device "
339	"implementation is missing.\n"
340	"A possible reason for this error is a missing extension pack. Note "
341	"that as of VirtualBox 4.0, certain features (for example USB 2.0 "
342	"support and remote desktop) are only available from an 'extension "
343	"pack' which must be downloaded and installed separately");
344	break;
345
346	case VERR_PCI_PASSTHROUGH_NO_HM:
347	pszError = N_("PCI passthrough requires VT-x/AMD-V");
348	break;
349
350	case VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING:
351	pszError = N_("PCI passthrough requires nested paging");
352	break;
353
354	default:
355	if (VMR3GetErrorCount(pUVM) == 0)
356	pszError = RTErrGetFull(rc);
357	else
358	pszError = NULL; /* already set. */
359	break;
360	}
361	if (pszError)
362	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
363	}
364	else
365	{
366	/*
367	* An error occurred at support library initialization time (before the
368	* VM could be created). Set the error message directly using the
369	* initial callback, as the callback list doesn't exist yet.
370	*/
371	const char *pszError;
372	switch (rc)
373	{
374	case VERR_VM_DRIVER_LOAD_ERROR:
375	#ifdef RT_OS_LINUX
376	pszError = N_("VirtualBox kernel driver not loaded. The vboxdrv kernel module "
377	"was either not loaded or /dev/vboxdrv is not set up properly. "
378	"Re-setup the kernel module by executing "
379	"'/sbin/vboxconfig' as root");
380	#else
381	pszError = N_("VirtualBox kernel driver not loaded");
382	#endif
383	break;
384	case VERR_VM_DRIVER_OPEN_ERROR:
385	pszError = N_("VirtualBox kernel driver cannot be opened");
386	break;
387	case VERR_VM_DRIVER_NOT_ACCESSIBLE:
388	#ifdef VBOX_WITH_HARDENING
389	/* This should only happen if the executable wasn't hardened - bad code/build. */
390	pszError = N_("VirtualBox kernel driver not accessible, permission problem. "
391	"Re-install VirtualBox. If you are building it yourself, you "
392	"should make sure it installed correctly and that the setuid "
393	"bit is set on the executables calling VMR3Create.");
394	#else
395	/* This should only happen when mixing builds or with the usual /dev/vboxdrv access issues. */
396	# if defined(RT_OS_DARWIN)
397	pszError = N_("VirtualBox KEXT is not accessible, permission problem. "
398	"If you have built VirtualBox yourself, make sure that you do not "
399	"have the vboxdrv KEXT from a different build or installation loaded.");
400	# elif defined(RT_OS_LINUX)
401	pszError = N_("VirtualBox kernel driver is not accessible, permission problem. "
402	"If you have built VirtualBox yourself, make sure that you do "
403	"not have the vboxdrv kernel module from a different build or "
404	"installation loaded. Also, make sure the vboxdrv udev rule gives "
405	"you the permission you need to access the device.");
406	# elif defined(RT_OS_WINDOWS)
407	pszError = N_("VirtualBox kernel driver is not accessible, permission problem.");
408	# else /* solaris, freebsd, ++. */
409	pszError = N_("VirtualBox kernel module is not accessible, permission problem. "
410	"If you have built VirtualBox yourself, make sure that you do "
411	"not have the vboxdrv kernel module from a different install loaded.");
412	# endif
413	#endif
414	break;
415	case VERR_INVALID_HANDLE: /** @todo track down and fix this error. */
416	case VERR_VM_DRIVER_NOT_INSTALLED:
417	#ifdef RT_OS_LINUX
418	pszError = N_("VirtualBox kernel driver not installed. The vboxdrv kernel module "
419	"was either not loaded or /dev/vboxdrv was not created for some "
420	"reason. Re-setup the kernel module by executing "
421	"'/sbin/vboxconfig' as root");
422	#else
423	pszError = N_("VirtualBox kernel driver not installed");
424	#endif
425	break;
426	case VERR_NO_MEMORY:
427	pszError = N_("VirtualBox support library out of memory");
428	break;
429	case VERR_VERSION_MISMATCH:
430	case VERR_VM_DRIVER_VERSION_MISMATCH:
431	pszError = N_("The VirtualBox support driver which is running is from a different "
432	"version of VirtualBox. You can correct this by stopping all "
433	"running instances of VirtualBox and reinstalling the software.");
434	break;
435	default:
436	pszError = N_("Unknown error initializing kernel driver");
437	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
438	}
439	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
440	}
441	}
442
443	/* cleanup */
444	vmR3DestroyUVM(pUVM, 2000);
445	LogFlow(("VMR3Create: returns %Rrc\n", rc));
446	return rc;
447	}
448
449
450	/**
451	* Creates the UVM.
452	*
453	* This will not initialize the support library even if vmR3DestroyUVM
454	* will terminate that.
455	*
456	* @returns VBox status code.
457	* @param cCpus Number of virtual CPUs
458	* @param pVmm2UserMethods Pointer to the optional VMM -> User method
459	* table.
460	* @param ppUVM Where to store the UVM pointer.
461	*/
462	static int vmR3CreateUVM(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, PUVM *ppUVM)
463	{
464	uint32_t i;
465
466	/*
467	* Create and initialize the UVM.
468	*/
469	PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_OFFSETOF(UVM, aCpus[cCpus]));
470	AssertReturn(pUVM, VERR_NO_MEMORY);
471	pUVM->u32Magic = UVM_MAGIC;
472	pUVM->cCpus = cCpus;
473	pUVM->pVmm2UserMethods = pVmm2UserMethods;
474
475	AssertCompile(sizeof(pUVM->vm.s) <= sizeof(pUVM->vm.padding));
476
477	pUVM->vm.s.cUvmRefs = 1;
478	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
479	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
480	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
481
482	pUVM->vm.s.enmHaltMethod = VMHALTMETHOD_BOOTSTRAP;
483	RTUuidClear(&pUVM->vm.s.Uuid);
484
485	/* Initialize the VMCPU array in the UVM. */
486	for (i = 0; i < cCpus; i++)
487	{
488	pUVM->aCpus[i].pUVM = pUVM;
489	pUVM->aCpus[i].idCpu = i;
490	}
491
492	/* Allocate a TLS entry to store the VMINTUSERPERVMCPU pointer. */
493	int rc = RTTlsAllocEx(&pUVM->vm.s.idxTLS, NULL);
494	AssertRC(rc);
495	if (RT_SUCCESS(rc))
496	{
497	/* Allocate a halt method event semaphore for each VCPU. */
498	for (i = 0; i < cCpus; i++)
499	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
500	for (i = 0; i < cCpus; i++)
501	{
502	rc = RTSemEventCreate(&pUVM->aCpus[i].vm.s.EventSemWait);
503	if (RT_FAILURE(rc))
504	break;
505	}
506	if (RT_SUCCESS(rc))
507	{
508	rc = RTCritSectInit(&pUVM->vm.s.AtStateCritSect);
509	if (RT_SUCCESS(rc))
510	{
511	rc = RTCritSectInit(&pUVM->vm.s.AtErrorCritSect);
512	if (RT_SUCCESS(rc))
513	{
514	/*
515	* Init fundamental (sub-)components - STAM, MMR3Heap and PDMLdr.
516	*/
517	rc = PDMR3InitUVM(pUVM);
518	if (RT_SUCCESS(rc))
519	{
520	rc = STAMR3InitUVM(pUVM);
521	if (RT_SUCCESS(rc))
522	{
523	rc = MMR3InitUVM(pUVM);
524	if (RT_SUCCESS(rc))
525	{
526	/*
527	* Start the emulation threads for all VMCPUs.
528	*/
529	for (i = 0; i < cCpus; i++)
530	{
531	rc = RTThreadCreateF(&pUVM->aCpus[i].vm.s.ThreadEMT, vmR3EmulationThread, &pUVM->aCpus[i],
532	_1M, RTTHREADTYPE_EMULATION, RTTHREADFLAGS_WAITABLE,
533	cCpus > 1 ? "EMT-%u" : "EMT", i);
534	if (RT_FAILURE(rc))
535	break;
536
537	pUVM->aCpus[i].vm.s.NativeThreadEMT = RTThreadGetNative(pUVM->aCpus[i].vm.s.ThreadEMT);
538	}
539
540	if (RT_SUCCESS(rc))
541	{
542	*ppUVM = pUVM;
543	return VINF_SUCCESS;
544	}
545
546	/* bail out. */
547	while (i-- > 0)
548	{
549	/** @todo rainy day: terminate the EMTs. */
550	}
551	MMR3TermUVM(pUVM);
552	}
553	STAMR3TermUVM(pUVM);
554	}
555	PDMR3TermUVM(pUVM);
556	}
557	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
558	}
559	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
560	}
561	}
562	for (i = 0; i < cCpus; i++)
563	{
564	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
565	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
566	}
567	RTTlsFree(pUVM->vm.s.idxTLS);
568	}
569	RTMemPageFree(pUVM, RT_OFFSETOF(UVM, aCpus[pUVM->cCpus]));
570	return rc;
571	}
572
573
574	/**
575	* Creates and initializes the VM.
576	*
577	* @thread EMT
578	*/
579	static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM)
580	{
581	#if (defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)) && !defined(VBOX_WITH_OLD_CPU_SUPPORT)
582	/*
583	* Require SSE2 to be present (already checked for in supdrv, so we
584	* shouldn't ever really get here).
585	*/
586	if (!(ASMCpuId_EDX(1) & X86_CPUID_FEATURE_EDX_SSE2))
587	{
588	LogRel(("vboxdrv: Requires SSE2 (cpuid(0).EDX=%#x)\n", ASMCpuId_EDX(1)));
589	return VERR_UNSUPPORTED_CPU;
590	}
591	#endif
592
593	/*
594	* Load the VMMR0.r0 module so that we can call GVMMR0CreateVM.
595	*/
596	int rc = PDMR3LdrLoadVMMR0U(pUVM);
597	if (RT_FAILURE(rc))
598	{
599	/** @todo we need a cleaner solution for this (VERR_VMX_IN_VMX_ROOT_MODE).
600	* bird: what about moving the message down here? Main picks the first message, right? */
601	if (rc == VERR_VMX_IN_VMX_ROOT_MODE)
602	return rc; /* proper error message set later on */
603	return vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("Failed to load VMMR0.r0"));
604	}
605
606	/*
607	* Request GVMM to create a new VM for us.
608	*/
609	GVMMCREATEVMREQ CreateVMReq;
610	CreateVMReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
611	CreateVMReq.Hdr.cbReq = sizeof(CreateVMReq);
612	CreateVMReq.pSession = pUVM->vm.s.pSession;
613	CreateVMReq.pVMR0 = NIL_RTR0PTR;
614	CreateVMReq.pVMR3 = NULL;
615	CreateVMReq.cCpus = cCpus;
616	rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_GVMM_CREATE_VM, 0, &CreateVMReq.Hdr);
617	if (RT_SUCCESS(rc))
618	{
619	PVM pVM = pUVM->pVM = CreateVMReq.pVMR3;
620	AssertRelease(VALID_PTR(pVM));
621	AssertRelease(pVM->pVMR0 == CreateVMReq.pVMR0);
622	AssertRelease(pVM->pSession == pUVM->vm.s.pSession);
623	AssertRelease(pVM->cCpus == cCpus);
624	AssertRelease(pVM->uCpuExecutionCap == 100);
625	AssertRelease(pVM->offVMCPU == RT_UOFFSETOF(VM, aCpus));
626	AssertCompileMemberAlignment(VM, cpum, 64);
627	AssertCompileMemberAlignment(VM, tm, 64);
628	AssertCompileMemberAlignment(VM, aCpus, PAGE_SIZE);
629
630	Log(("VMR3Create: Created pUVM=%p pVM=%p pVMR0=%p hSelf=%#x cCpus=%RU32\n",
631	pUVM, pVM, pVM->pVMR0, pVM->hSelf, pVM->cCpus));
632
633	/*
634	* Initialize the VM structure and our internal data (VMINT).
635	*/
636	pVM->pUVM = pUVM;
637
638	for (VMCPUID i = 0; i < pVM->cCpus; i++)
639	{
640	pVM->aCpus[i].pUVCpu = &pUVM->aCpus[i];
641	pVM->aCpus[i].idCpu = i;
642	pVM->aCpus[i].hNativeThread = pUVM->aCpus[i].vm.s.NativeThreadEMT;
643	Assert(pVM->aCpus[i].hNativeThread != NIL_RTNATIVETHREAD);
644	/* hNativeThreadR0 is initialized on EMT registration. */
645	pUVM->aCpus[i].pVCpu = &pVM->aCpus[i];
646	pUVM->aCpus[i].pVM = pVM;
647	}
648
649
650	/*
651	* Init the configuration.
652	*/
653	rc = CFGMR3Init(pVM, pfnCFGMConstructor, pvUserCFGM);
654	if (RT_SUCCESS(rc))
655	{
656	rc = vmR3ReadBaseConfig(pVM, pUVM, cCpus);
657	if (RT_SUCCESS(rc))
658	{
659	/*
660	* Init the ring-3 components and ring-3 per cpu data, finishing it off
661	* by a relocation round (intermediate context finalization will do this).
662	*/
663	rc = vmR3InitRing3(pVM, pUVM);
664	if (RT_SUCCESS(rc))
665	{
666	rc = PGMR3FinalizeMappings(pVM);
667	if (RT_SUCCESS(rc))
668	{
669
670	LogFlow(("Ring-3 init succeeded\n"));
671
672	/*
673	* Init the Ring-0 components.
674	*/
675	rc = vmR3InitRing0(pVM);
676	if (RT_SUCCESS(rc))
677	{
678	/* Relocate again, because some switcher fixups depends on R0 init results. */
679	VMR3Relocate(pVM, 0 /* offDelta */);
680
681	#ifdef VBOX_WITH_DEBUGGER
682	/*
683	* Init the tcp debugger console if we're building
684	* with debugger support.
685	*/
686	void *pvUser = NULL;
687	rc = DBGCTcpCreate(pUVM, &pvUser);
688	if ( RT_SUCCESS(rc)
689	\|\| rc == VERR_NET_ADDRESS_IN_USE)
690	{
691	pUVM->vm.s.pvDBGC = pvUser;
692	#endif
693	/*
694	* Init the Raw-Mode Context components.
695	*/
696	#ifdef VBOX_WITH_RAW_MODE
697	rc = vmR3InitRC(pVM);
698	if (RT_SUCCESS(rc))
699	#endif
700	{
701	/*
702	* Now we can safely set the VM halt method to default.
703	*/
704	rc = vmR3SetHaltMethodU(pUVM, VMHALTMETHOD_DEFAULT);
705	if (RT_SUCCESS(rc))
706	{
707	/*
708	* Set the state and we're done.
709	*/
710	vmR3SetState(pVM, VMSTATE_CREATED, VMSTATE_CREATING);
711
712	#ifdef LOG_ENABLED
713	RTLogSetCustomPrefixCallback(NULL, vmR3LogPrefixCallback, pUVM);
714	#endif
715	return VINF_SUCCESS;
716	}
717	}
718	#ifdef VBOX_WITH_DEBUGGER
719	DBGCTcpTerminate(pUVM, pUVM->vm.s.pvDBGC);
720	pUVM->vm.s.pvDBGC = NULL;
721	}
722	#endif
723	//..
724	}
725	}
726	vmR3Destroy(pVM);
727	}
728	}
729	//..
730
731	/* Clean CFGM. */
732	int rc2 = CFGMR3Term(pVM);
733	AssertRC(rc2);
734	}
735
736	/*
737	* Do automatic cleanups while the VM structure is still alive and all
738	* references to it are still working.
739	*/
740	PDMR3CritSectBothTerm(pVM);
741
742	/*
743	* Drop all references to VM and the VMCPU structures, then
744	* tell GVMM to destroy the VM.
745	*/
746	pUVM->pVM = NULL;
747	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
748	{
749	pUVM->aCpus[i].pVM = NULL;
750	pUVM->aCpus[i].pVCpu = NULL;
751	}
752	Assert(pUVM->vm.s.enmHaltMethod == VMHALTMETHOD_BOOTSTRAP);
753
754	if (pUVM->cCpus > 1)
755	{
756	/* Poke the other EMTs since they may have stale pVM and pVCpu references
757	on the stack (see VMR3WaitU for instance) if they've been awakened after
758	VM creation. */
759	for (VMCPUID i = 1; i < pUVM->cCpus; i++)
760	VMR3NotifyCpuFFU(&pUVM->aCpus[i], 0);
761	RTThreadSleep(RT_MIN(100 + 25 (pUVM->cCpus - 1), 500)); / very sophisticated */
762	}
763
764	int rc2 = SUPR3CallVMMR0Ex(CreateVMReq.pVMR0, 0 /idCpu/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL);
765	AssertRC(rc2);
766	}
767	else
768	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("VM creation failed (GVMM)"));
769
770	LogFlow(("vmR3CreateU: returns %Rrc\n", rc));
771	return rc;
772	}
773
774
775	/**
776	* Reads the base configuation from CFGM.
777	*
778	* @returns VBox status code.
779	* @param pVM The cross context VM structure.
780	* @param pUVM The user mode VM structure.
781	* @param cCpus The CPU count given to VMR3Create.
782	*/
783	static int vmR3ReadBaseConfig(PVM pVM, PUVM pUVM, uint32_t cCpus)
784	{
785	int rc;
786	PCFGMNODE pRoot = CFGMR3GetRoot(pVM);
787
788	/*
789	* If executing in fake suplib mode disable RR3 and RR0 in the config.
790	*/
791	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
792	if (psz && !strcmp(psz, "fake"))
793	{
794	CFGMR3RemoveValue(pRoot, "RawR3Enabled");
795	CFGMR3InsertInteger(pRoot, "RawR3Enabled", 0);
796	CFGMR3RemoveValue(pRoot, "RawR0Enabled");
797	CFGMR3InsertInteger(pRoot, "RawR0Enabled", 0);
798	}
799
800	/*
801	* Base EM and HM config properties.
802	*/
803	/** @todo We don't need to read any of this here. The relevant modules reads
804	* them again and will be in a better position to set them correctly. */
805	Assert(pVM->fRecompileUser == false); /* ASSUMES all zeros at this point */
806	bool fEnabled;
807	rc = CFGMR3QueryBoolDef(pRoot, "RawR3Enabled", &fEnabled, false); AssertRCReturn(rc, rc);
808	pVM->fRecompileUser = !fEnabled;
809	rc = CFGMR3QueryBoolDef(pRoot, "RawR0Enabled", &fEnabled, false); AssertRCReturn(rc, rc);
810	pVM->fRecompileSupervisor = !fEnabled;
811	#ifdef VBOX_WITH_RAW_MODE
812	# ifdef VBOX_WITH_RAW_RING1
813	rc = CFGMR3QueryBoolDef(pRoot, "RawR1Enabled", &pVM->fRawRing1Enabled, false);
814	# endif
815	rc = CFGMR3QueryBoolDef(pRoot, "PATMEnabled", &pVM->fPATMEnabled, true); AssertRCReturn(rc, rc);
816	rc = CFGMR3QueryBoolDef(pRoot, "CSAMEnabled", &pVM->fCSAMEnabled, true); AssertRCReturn(rc, rc);
817	rc = CFGMR3QueryBoolDef(pRoot, "HMEnabled", &pVM->fHMEnabled, true); AssertRCReturn(rc, rc);
818	#else
819	pVM->fHMEnabled = true;
820	#endif
821	LogRel(("VM: fHMEnabled=%RTbool (configured) fRecompileUser=%RTbool fRecompileSupervisor=%RTbool\n"
822	"VM: fRawRing1Enabled=%RTbool CSAM=%RTbool PATM=%RTbool\n",
823	pVM->fHMEnabled, pVM->fRecompileUser, pVM->fRecompileSupervisor,
824	pVM->fRawRing1Enabled, pVM->fCSAMEnabled, pVM->fPATMEnabled));
825
826	/*
827	* Make sure the CPU count in the config data matches.
828	*/
829	uint32_t cCPUsCfg;
830	rc = CFGMR3QueryU32Def(pRoot, "NumCPUs", &cCPUsCfg, 1);
831	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"NumCPUs\" as integer failed, rc=%Rrc\n", rc), rc);
832	AssertLogRelMsgReturn(cCPUsCfg == cCpus,
833	("Configuration error: \"NumCPUs\"=%RU32 and VMR3Create::cCpus=%RU32 does not match!\n",
834	cCPUsCfg, cCpus),
835	VERR_INVALID_PARAMETER);
836
837	/*
838	* Get the CPU execution cap.
839	*/
840	rc = CFGMR3QueryU32Def(pRoot, "CpuExecutionCap", &pVM->uCpuExecutionCap, 100);
841	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"CpuExecutionCap\" as integer failed, rc=%Rrc\n", rc), rc);
842
843	/*
844	* Get the VM name and UUID.
845	*/
846	rc = CFGMR3QueryStringAllocDef(pRoot, "Name", &pUVM->vm.s.pszName, "<unknown>");
847	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"Name\" failed, rc=%Rrc\n", rc), rc);
848
849	rc = CFGMR3QueryBytes(pRoot, "UUID", &pUVM->vm.s.Uuid, sizeof(pUVM->vm.s.Uuid));
850	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
851	rc = VINF_SUCCESS;
852	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"UUID\" failed, rc=%Rrc\n", rc), rc);
853
854	rc = CFGMR3QueryBoolDef(pRoot, "PowerOffInsteadOfReset", &pVM->vm.s.fPowerOffInsteadOfReset, false);
855	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"PowerOffInsteadOfReset\" failed, rc=%Rrc\n", rc), rc);
856
857	return VINF_SUCCESS;
858	}
859
860
861	/**
862	* Register the calling EMT with GVM.
863	*
864	* @returns VBox status code.
865	* @param pVM The cross context VM structure.
866	* @param idCpu The Virtual CPU ID.
867	*/
868	static DECLCALLBACK(int) vmR3RegisterEMT(PVM pVM, VMCPUID idCpu)
869	{
870	Assert(VMMGetCpuId(pVM) == idCpu);
871	int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, idCpu, VMMR0_DO_GVMM_REGISTER_VMCPU, 0, NULL);
872	if (RT_FAILURE(rc))
873	LogRel(("idCpu=%u rc=%Rrc\n", idCpu, rc));
874	return rc;
875	}
876
877
878	/**
879	* Initializes all R3 components of the VM
880	*/
881	static int vmR3InitRing3(PVM pVM, PUVM pUVM)
882	{
883	int rc;
884
885	/*
886	* Register the other EMTs with GVM.
887	*/
888	for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++)
889	{
890	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)vmR3RegisterEMT, 2, pVM, idCpu);
891	if (RT_FAILURE(rc))
892	return rc;
893	}
894
895	/*
896	* Register statistics.
897	*/
898	STAM_REG(pVM, &pVM->StatTotalInGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/InGC", STAMUNIT_TICKS_PER_CALL, "Profiling the total time spent in GC.");
899	STAM_REG(pVM, &pVM->StatSwitcherToGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToGC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
900	STAM_REG(pVM, &pVM->StatSwitcherToHC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToHC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to HC.");
901	STAM_REG(pVM, &pVM->StatSwitcherSaveRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SaveRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
902	STAM_REG(pVM, &pVM->StatSwitcherSysEnter, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SysEnter", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
903	STAM_REG(pVM, &pVM->StatSwitcherDebug, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Debug", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
904	STAM_REG(pVM, &pVM->StatSwitcherCR0, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR0", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
905	STAM_REG(pVM, &pVM->StatSwitcherCR4, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR4", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
906	STAM_REG(pVM, &pVM->StatSwitcherLgdt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lgdt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
907	STAM_REG(pVM, &pVM->StatSwitcherLidt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lidt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
908	STAM_REG(pVM, &pVM->StatSwitcherLldt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lldt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
909	STAM_REG(pVM, &pVM->StatSwitcherTSS, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/TSS", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
910	STAM_REG(pVM, &pVM->StatSwitcherJmpCR3, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/JmpCR3", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
911	STAM_REG(pVM, &pVM->StatSwitcherRstrRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/RstrRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
912
913	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
914	{
915	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltYield, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "Profiling halted state yielding.", "/PROF/CPU%d/VM/Halt/Yield", idCpu);
916	AssertRC(rc);
917	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltBlock, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "Profiling halted state blocking.", "/PROF/CPU%d/VM/Halt/Block", idCpu);
918	AssertRC(rc);
919	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltBlockOverslept, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "Time wasted by blocking too long.", "/PROF/CPU%d/VM/Halt/BlockOverslept", idCpu);
920	AssertRC(rc);
921	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltBlockInsomnia, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "Time slept when returning to early.","/PROF/CPU%d/VM/Halt/BlockInsomnia", idCpu);
922	AssertRC(rc);
923	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltBlockOnTime, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "Time slept on time.", "/PROF/CPU%d/VM/Halt/BlockOnTime", idCpu);
924	AssertRC(rc);
925	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltTimers, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_CALL, "Profiling halted state timer tasks.", "/PROF/CPU%d/VM/Halt/Timers", idCpu);
926	AssertRC(rc);
927	}
928
929	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocNew, STAMTYPE_COUNTER, "/VM/Req/AllocNew", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a new packet.");
930	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRaces, STAMTYPE_COUNTER, "/VM/Req/AllocRaces", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc causing races.");
931	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRecycled, STAMTYPE_COUNTER, "/VM/Req/AllocRecycled", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a recycled packet.");
932	STAM_REG(pVM, &pUVM->vm.s.StatReqFree, STAMTYPE_COUNTER, "/VM/Req/Free", STAMUNIT_OCCURENCES, "Number of VMR3ReqFree calls.");
933	STAM_REG(pVM, &pUVM->vm.s.StatReqFreeOverflow, STAMTYPE_COUNTER, "/VM/Req/FreeOverflow", STAMUNIT_OCCURENCES, "Number of times the request was actually freed.");
934	STAM_REG(pVM, &pUVM->vm.s.StatReqProcessed, STAMTYPE_COUNTER, "/VM/Req/Processed", STAMUNIT_OCCURENCES, "Number of processed requests (any queue).");
935	STAM_REG(pVM, &pUVM->vm.s.StatReqMoreThan1, STAMTYPE_COUNTER, "/VM/Req/MoreThan1", STAMUNIT_OCCURENCES, "Number of times there are more than one request on the queue when processing it.");
936	STAM_REG(pVM, &pUVM->vm.s.StatReqPushBackRaces, STAMTYPE_COUNTER, "/VM/Req/PushBackRaces", STAMUNIT_OCCURENCES, "Number of push back races.");
937
938	/*
939	* Init all R3 components, the order here might be important.
940	* NEM and HM shall be initialized first!
941	*/
942	Assert(pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NOT_SET);
943	rc = NEMR3InitConfig(pVM);
944	if (RT_SUCCESS(rc))
945	rc = HMR3Init(pVM);
946	if (RT_SUCCESS(rc))
947	{
948	ASMCompilerBarrier(); /* HMR3Init will have modified bMainExecutionEngine */
949	#ifdef VBOX_WITH_RAW_MODE
950	Assert( pVM->bMainExecutionEngine == VM_EXEC_ENGINE_HW_VIRT
951	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_RAW_MODE
952	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API);
953	#else
954	Assert( pVM->bMainExecutionEngine == VM_EXEC_ENGINE_HW_VIRT
955	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API);
956	#endif
957	rc = MMR3Init(pVM);
958	if (RT_SUCCESS(rc))
959	{
960	rc = CPUMR3Init(pVM);
961	if (RT_SUCCESS(rc))
962	{
963	rc = NEMR3InitAfterCPUM(pVM);
964	if (RT_SUCCESS(rc))
965	rc = PGMR3Init(pVM);
966	if (RT_SUCCESS(rc))
967	{
968	#ifdef VBOX_WITH_REM
969	rc = REMR3Init(pVM);
970	#endif
971	if (RT_SUCCESS(rc))
972	{
973	rc = MMR3InitPaging(pVM);
974	if (RT_SUCCESS(rc))
975	rc = TMR3Init(pVM);
976	if (RT_SUCCESS(rc))
977	{
978	rc = FTMR3Init(pVM);
979	if (RT_SUCCESS(rc))
980	{
981	rc = VMMR3Init(pVM);
982	if (RT_SUCCESS(rc))
983	{
984	rc = SELMR3Init(pVM);
985	if (RT_SUCCESS(rc))
986	{
987	rc = TRPMR3Init(pVM);
988	if (RT_SUCCESS(rc))
989	{
990	#ifdef VBOX_WITH_RAW_MODE
991	rc = CSAMR3Init(pVM);
992	if (RT_SUCCESS(rc))
993	{
994	rc = PATMR3Init(pVM);
995	if (RT_SUCCESS(rc))
996	{
997	#endif
998	rc = IOMR3Init(pVM);
999	if (RT_SUCCESS(rc))
1000	{
1001	rc = EMR3Init(pVM);
1002	if (RT_SUCCESS(rc))
1003	{
1004	rc = IEMR3Init(pVM);
1005	if (RT_SUCCESS(rc))
1006	{
1007	rc = DBGFR3Init(pVM);
1008	if (RT_SUCCESS(rc))
1009	{
1010	/* GIM must be init'd before PDM, gimdevR3Construct()
1011	requires GIM provider to be setup. */
1012	rc = GIMR3Init(pVM);
1013	if (RT_SUCCESS(rc))
1014	{
1015	rc = PDMR3Init(pVM);
1016	if (RT_SUCCESS(rc))
1017	{
1018	rc = PGMR3InitDynMap(pVM);
1019	if (RT_SUCCESS(rc))
1020	rc = MMR3HyperInitFinalize(pVM);
1021	#ifdef VBOX_WITH_RAW_MODE
1022	if (RT_SUCCESS(rc))
1023	rc = PATMR3InitFinalize(pVM);
1024	#endif
1025	if (RT_SUCCESS(rc))
1026	rc = PGMR3InitFinalize(pVM);
1027	if (RT_SUCCESS(rc))
1028	rc = SELMR3InitFinalize(pVM);
1029	if (RT_SUCCESS(rc))
1030	rc = TMR3InitFinalize(pVM);
1031	#ifdef VBOX_WITH_REM
1032	if (RT_SUCCESS(rc))
1033	rc = REMR3InitFinalize(pVM);
1034	#endif
1035	if (RT_SUCCESS(rc))
1036	{
1037	PGMR3MemSetup(pVM, false /fAtReset/);
1038	PDMR3MemSetup(pVM, false /fAtReset/);
1039	}
1040	if (RT_SUCCESS(rc))
1041	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING3);
1042	if (RT_SUCCESS(rc))
1043	{
1044	LogFlow(("vmR3InitRing3: returns %Rrc\n", VINF_SUCCESS));
1045	return VINF_SUCCESS;
1046	}
1047
1048	int rc2 = PDMR3Term(pVM);
1049	AssertRC(rc2);
1050	}
1051	int rc2 = GIMR3Term(pVM);
1052	AssertRC(rc2);
1053	}
1054	int rc2 = DBGFR3Term(pVM);
1055	AssertRC(rc2);
1056	}
1057	int rc2 = IEMR3Term(pVM);
1058	AssertRC(rc2);
1059	}
1060	int rc2 = EMR3Term(pVM);
1061	AssertRC(rc2);
1062	}
1063	int rc2 = IOMR3Term(pVM);
1064	AssertRC(rc2);
1065	}
1066	#ifdef VBOX_WITH_RAW_MODE
1067	int rc2 = PATMR3Term(pVM);
1068	AssertRC(rc2);
1069	}
1070	int rc2 = CSAMR3Term(pVM);
1071	AssertRC(rc2);
1072	}
1073	#endif
1074	int rc2 = TRPMR3Term(pVM);
1075	AssertRC(rc2);
1076	}
1077	int rc2 = SELMR3Term(pVM);
1078	AssertRC(rc2);
1079	}
1080	int rc2 = VMMR3Term(pVM);
1081	AssertRC(rc2);
1082	}
1083	int rc2 = FTMR3Term(pVM);
1084	AssertRC(rc2);
1085	}
1086	int rc2 = TMR3Term(pVM);
1087	AssertRC(rc2);
1088	}
1089	#ifdef VBOX_WITH_REM
1090	int rc2 = REMR3Term(pVM);
1091	AssertRC(rc2);
1092	#endif
1093	}
1094	int rc2 = PGMR3Term(pVM);
1095	AssertRC(rc2);
1096	}
1097	//int rc2 = CPUMR3Term(pVM);
1098	//AssertRC(rc2);
1099	}
1100	/* MMR3Term is not called here because it'll kill the heap. */
1101	}
1102	int rc2 = HMR3Term(pVM);
1103	AssertRC(rc2);
1104	}
1105	NEMR3Term(pVM);
1106
1107	LogFlow(("vmR3InitRing3: returns %Rrc\n", rc));
1108	return rc;
1109	}
1110
1111
1112	/**
1113	* Initializes all R0 components of the VM
1114	*/
1115	static int vmR3InitRing0(PVM pVM)
1116	{
1117	LogFlow(("vmR3InitRing0:\n"));
1118
1119	/*
1120	* Check for FAKE suplib mode.
1121	*/
1122	int rc = VINF_SUCCESS;
1123	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
1124	if (!psz \|\| strcmp(psz, "fake"))
1125	{
1126	/*
1127	* Call the VMMR0 component and let it do the init.
1128	*/
1129	rc = VMMR3InitR0(pVM);
1130	}
1131	else
1132	Log(("vmR3InitRing0: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1133
1134	/*
1135	* Do notifications and return.
1136	*/
1137	if (RT_SUCCESS(rc))
1138	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING0);
1139	if (RT_SUCCESS(rc))
1140	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_HM);
1141
1142	LogFlow(("vmR3InitRing0: returns %Rrc\n", rc));
1143	return rc;
1144	}
1145
1146
1147	#ifdef VBOX_WITH_RAW_MODE
1148	/**
1149	* Initializes all RC components of the VM
1150	*/
1151	static int vmR3InitRC(PVM pVM)
1152	{
1153	LogFlow(("vmR3InitRC:\n"));
1154
1155	/*
1156	* Check for FAKE suplib mode.
1157	*/
1158	int rc = VINF_SUCCESS;
1159	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
1160	if (!psz \|\| strcmp(psz, "fake"))
1161	{
1162	/*
1163	* Call the VMMR0 component and let it do the init.
1164	*/
1165	rc = VMMR3InitRC(pVM);
1166	}
1167	else
1168	Log(("vmR3InitRC: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1169
1170	/*
1171	* Do notifications and return.
1172	*/
1173	if (RT_SUCCESS(rc))
1174	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RC);
1175	LogFlow(("vmR3InitRC: returns %Rrc\n", rc));
1176	return rc;
1177	}
1178	#endif /* VBOX_WITH_RAW_MODE */
1179
1180
1181	/**
1182	* Do init completed notifications.
1183	*
1184	* @returns VBox status code.
1185	* @param pVM The cross context VM structure.
1186	* @param enmWhat What's completed.
1187	*/
1188	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
1189	{
1190	int rc = VMMR3InitCompleted(pVM, enmWhat);
1191	if (RT_SUCCESS(rc))
1192	rc = HMR3InitCompleted(pVM, enmWhat);
1193	if (RT_SUCCESS(rc))
1194	rc = NEMR3InitCompleted(pVM, enmWhat);
1195	if (RT_SUCCESS(rc))
1196	rc = PGMR3InitCompleted(pVM, enmWhat);
1197	if (RT_SUCCESS(rc))
1198	rc = CPUMR3InitCompleted(pVM, enmWhat);
1199	if (enmWhat == VMINITCOMPLETED_RING3)
1200	{
1201	#ifndef VBOX_WITH_RAW_MODE
1202	if (RT_SUCCESS(rc))
1203	rc = SSMR3RegisterStub(pVM, "CSAM", 0);
1204	if (RT_SUCCESS(rc))
1205	rc = SSMR3RegisterStub(pVM, "PATM", 0);
1206	#endif
1207	#ifndef VBOX_WITH_REM
1208	if (RT_SUCCESS(rc))
1209	rc = SSMR3RegisterStub(pVM, "rem", 1);
1210	#endif
1211	}
1212	if (RT_SUCCESS(rc))
1213	rc = PDMR3InitCompleted(pVM, enmWhat);
1214	return rc;
1215	}
1216
1217
1218	#ifdef LOG_ENABLED
1219	/**
1220	* Logger callback for inserting a custom prefix.
1221	*
1222	* @returns Number of chars written.
1223	* @param pLogger The logger.
1224	* @param pchBuf The output buffer.
1225	* @param cchBuf The output buffer size.
1226	* @param pvUser Pointer to the UVM structure.
1227	*/
1228	static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1229	{
1230	AssertReturn(cchBuf >= 2, 0);
1231	PUVM pUVM = (PUVM)pvUser;
1232	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
1233	if (pUVCpu)
1234	{
1235	static const char s_szHex[17] = "0123456789abcdef";
1236	VMCPUID const idCpu = pUVCpu->idCpu;
1237	pchBuf[1] = s_szHex[ idCpu & 15];
1238	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1239	}
1240	else
1241	{
1242	pchBuf[0] = 'x';
1243	pchBuf[1] = 'y';
1244	}
1245
1246	NOREF(pLogger);
1247	return 2;
1248	}
1249	#endif /* LOG_ENABLED */
1250
1251
1252	/**
1253	* Calls the relocation functions for all VMM components so they can update
1254	* any GC pointers. When this function is called all the basic VM members
1255	* have been updated and the actual memory relocation have been done
1256	* by the PGM/MM.
1257	*
1258	* This is used both on init and on runtime relocations.
1259	*
1260	* @param pVM The cross context VM structure.
1261	* @param offDelta Relocation delta relative to old location.
1262	*/
1263	VMMR3_INT_DECL(void) VMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1264	{
1265	LogFlow(("VMR3Relocate: offDelta=%RGv\n", offDelta));
1266
1267	/*
1268	* The order here is very important!
1269	*/
1270	PGMR3Relocate(pVM, offDelta);
1271	PDMR3LdrRelocateU(pVM->pUVM, offDelta);
1272	PGMR3Relocate(pVM, 0); /* Repeat after PDM relocation. */
1273	CPUMR3Relocate(pVM);
1274	HMR3Relocate(pVM);
1275	SELMR3Relocate(pVM);
1276	VMMR3Relocate(pVM, offDelta);
1277	SELMR3Relocate(pVM); /* !hack! fix stack! */
1278	TRPMR3Relocate(pVM, offDelta);
1279	#ifdef VBOX_WITH_RAW_MODE
1280	PATMR3Relocate(pVM, (RTRCINTPTR)offDelta);
1281	CSAMR3Relocate(pVM, offDelta);
1282	#endif
1283	IOMR3Relocate(pVM, offDelta);
1284	EMR3Relocate(pVM);
1285	TMR3Relocate(pVM, offDelta);
1286	IEMR3Relocate(pVM);
1287	DBGFR3Relocate(pVM, offDelta);
1288	PDMR3Relocate(pVM, offDelta);
1289	GIMR3Relocate(pVM, offDelta);
1290	}
1291
1292
1293	/**
1294	* EMT rendezvous worker for VMR3PowerOn.
1295	*
1296	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
1297	* code, see FNVMMEMTRENDEZVOUS.)
1298	*
1299	* @param pVM The cross context VM structure.
1300	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1301	* @param pvUser Ignored.
1302	*/
1303	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser)
1304	{
1305	LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1306	Assert(!pvUser); NOREF(pvUser);
1307
1308	/*
1309	* The first thread thru here tries to change the state. We shouldn't be
1310	* called again if this fails.
1311	*/
1312	if (pVCpu->idCpu == pVM->cCpus - 1)
1313	{
1314	int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED);
1315	if (RT_FAILURE(rc))
1316	return rc;
1317	}
1318
1319	VMSTATE enmVMState = VMR3GetState(pVM);
1320	AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON,
1321	("%s\n", VMR3GetStateName(enmVMState)),
1322	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1323
1324	/*
1325	* All EMTs changes their state to started.
1326	*/
1327	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1328
1329	/*
1330	* EMT(0) is last thru here and it will make the notification calls
1331	* and advance the state.
1332	*/
1333	if (pVCpu->idCpu == 0)
1334	{
1335	PDMR3PowerOn(pVM);
1336	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON);
1337	}
1338
1339	return VINF_SUCCESS;
1340	}
1341
1342
1343	/**
1344	* Powers on the virtual machine.
1345	*
1346	* @returns VBox status code.
1347	*
1348	* @param pUVM The VM to power on.
1349	*
1350	* @thread Any thread.
1351	* @vmstate Created
1352	* @vmstateto PoweringOn+Running
1353	*/
1354	VMMR3DECL(int) VMR3PowerOn(PUVM pUVM)
1355	{
1356	LogFlow(("VMR3PowerOn: pUVM=%p\n", pUVM));
1357	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1358	PVM pVM = pUVM->pVM;
1359	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1360
1361	/*
1362	* Gather all the EMTs to reduce the init TSC drift and keep
1363	* the state changing APIs a bit uniform.
1364	*/
1365	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1366	vmR3PowerOn, NULL);
1367	LogFlow(("VMR3PowerOn: returns %Rrc\n", rc));
1368	return rc;
1369	}
1370
1371
1372	/**
1373	* Does the suspend notifications.
1374	*
1375	* @param pVM The cross context VM structure.
1376	* @thread EMT(0)
1377	*/
1378	static void vmR3SuspendDoWork(PVM pVM)
1379	{
1380	PDMR3Suspend(pVM);
1381	}
1382
1383
1384	/**
1385	* EMT rendezvous worker for VMR3Suspend.
1386	*
1387	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
1388	* return code, see FNVMMEMTRENDEZVOUS.)
1389	*
1390	* @param pVM The cross context VM structure.
1391	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1392	* @param pvUser Ignored.
1393	*/
1394	static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1395	{
1396	VMSUSPENDREASON enmReason = (VMSUSPENDREASON)(uintptr_t)pvUser;
1397	LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1398
1399	/*
1400	* The first EMT switches the state to suspending. If this fails because
1401	* something was racing us in one way or the other, there will be no more
1402	* calls and thus the state assertion below is not going to annoy anyone.
1403	*/
1404	if (pVCpu->idCpu == pVM->cCpus - 1)
1405	{
1406	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1407	VMSTATE_SUSPENDING, VMSTATE_RUNNING,
1408	VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS);
1409	if (RT_FAILURE(rc))
1410	return rc;
1411	pVM->pUVM->vm.s.enmSuspendReason = enmReason;
1412	}
1413
1414	VMSTATE enmVMState = VMR3GetState(pVM);
1415	AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING
1416	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS,
1417	("%s\n", VMR3GetStateName(enmVMState)),
1418	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1419
1420	/*
1421	* EMT(0) does the actually suspending after all the other CPUs have
1422	* been thru here.
1423	*/
1424	if (pVCpu->idCpu == 0)
1425	{
1426	vmR3SuspendDoWork(pVM);
1427
1428	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1429	VMSTATE_SUSPENDED, VMSTATE_SUSPENDING,
1430	VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS);
1431	if (RT_FAILURE(rc))
1432	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1433	}
1434
1435	return VINF_EM_SUSPEND;
1436	}
1437
1438
1439	/**
1440	* Suspends a running VM.
1441	*
1442	* @returns VBox status code. When called on EMT, this will be a strict status
1443	* code that has to be propagated up the call stack.
1444	*
1445	* @param pUVM The VM to suspend.
1446	* @param enmReason The reason for suspending.
1447	*
1448	* @thread Any thread.
1449	* @vmstate Running or RunningLS
1450	* @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS
1451	*/
1452	VMMR3DECL(int) VMR3Suspend(PUVM pUVM, VMSUSPENDREASON enmReason)
1453	{
1454	LogFlow(("VMR3Suspend: pUVM=%p\n", pUVM));
1455	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1456	AssertReturn(enmReason > VMSUSPENDREASON_INVALID && enmReason < VMSUSPENDREASON_END, VERR_INVALID_PARAMETER);
1457
1458	/*
1459	* Gather all the EMTs to make sure there are no races before
1460	* changing the VM state.
1461	*/
1462	int rc = VMMR3EmtRendezvous(pUVM->pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1463	vmR3Suspend, (void *)(uintptr_t)enmReason);
1464	LogFlow(("VMR3Suspend: returns %Rrc\n", rc));
1465	return rc;
1466	}
1467
1468
1469	/**
1470	* Retrieves the reason for the most recent suspend.
1471	*
1472	* @returns Suspend reason. VMSUSPENDREASON_INVALID if no suspend has been done
1473	* or the handle is invalid.
1474	* @param pUVM The user mode VM handle.
1475	*/
1476	VMMR3DECL(VMSUSPENDREASON) VMR3GetSuspendReason(PUVM pUVM)
1477	{
1478	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSUSPENDREASON_INVALID);
1479	return pUVM->vm.s.enmSuspendReason;
1480	}
1481
1482
1483	/**
1484	* EMT rendezvous worker for VMR3Resume.
1485	*
1486	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1487	* return code, see FNVMMEMTRENDEZVOUS.)
1488	*
1489	* @param pVM The cross context VM structure.
1490	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1491	* @param pvUser Reason.
1492	*/
1493	static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser)
1494	{
1495	VMRESUMEREASON enmReason = (VMRESUMEREASON)(uintptr_t)pvUser;
1496	LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1497
1498	/*
1499	* The first thread thru here tries to change the state. We shouldn't be
1500	* called again if this fails.
1501	*/
1502	if (pVCpu->idCpu == pVM->cCpus - 1)
1503	{
1504	int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED);
1505	if (RT_FAILURE(rc))
1506	return rc;
1507	pVM->pUVM->vm.s.enmResumeReason = enmReason;
1508	}
1509
1510	VMSTATE enmVMState = VMR3GetState(pVM);
1511	AssertMsgReturn(enmVMState == VMSTATE_RESUMING,
1512	("%s\n", VMR3GetStateName(enmVMState)),
1513	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1514
1515	#if 0
1516	/*
1517	* All EMTs changes their state to started.
1518	*/
1519	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1520	#endif
1521
1522	/*
1523	* EMT(0) is last thru here and it will make the notification calls
1524	* and advance the state.
1525	*/
1526	if (pVCpu->idCpu == 0)
1527	{
1528	PDMR3Resume(pVM);
1529	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING);
1530	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1531	}
1532
1533	return VINF_EM_RESUME;
1534	}
1535
1536
1537	/**
1538	* Resume VM execution.
1539	*
1540	* @returns VBox status code. When called on EMT, this will be a strict status
1541	* code that has to be propagated up the call stack.
1542	*
1543	* @param pUVM The user mode VM handle.
1544	* @param enmReason The reason we're resuming.
1545	*
1546	* @thread Any thread.
1547	* @vmstate Suspended
1548	* @vmstateto Running
1549	*/
1550	VMMR3DECL(int) VMR3Resume(PUVM pUVM, VMRESUMEREASON enmReason)
1551	{
1552	LogFlow(("VMR3Resume: pUVM=%p\n", pUVM));
1553	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1554	PVM pVM = pUVM->pVM;
1555	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1556	AssertReturn(enmReason > VMRESUMEREASON_INVALID && enmReason < VMRESUMEREASON_END, VERR_INVALID_PARAMETER);
1557
1558	/*
1559	* Gather all the EMTs to make sure there are no races before
1560	* changing the VM state.
1561	*/
1562	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1563	vmR3Resume, (void *)(uintptr_t)enmReason);
1564	LogFlow(("VMR3Resume: returns %Rrc\n", rc));
1565	return rc;
1566	}
1567
1568
1569	/**
1570	* Retrieves the reason for the most recent resume.
1571	*
1572	* @returns Resume reason. VMRESUMEREASON_INVALID if no suspend has been
1573	* done or the handle is invalid.
1574	* @param pUVM The user mode VM handle.
1575	*/
1576	VMMR3DECL(VMRESUMEREASON) VMR3GetResumeReason(PUVM pUVM)
1577	{
1578	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMRESUMEREASON_INVALID);
1579	return pUVM->vm.s.enmResumeReason;
1580	}
1581
1582
1583	/**
1584	* EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM
1585	* after the live step has been completed.
1586	*
1587	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1588	* return code, see FNVMMEMTRENDEZVOUS.)
1589	*
1590	* @param pVM The cross context VM structure.
1591	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1592	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1593	*/
1594	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1595	{
1596	LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1597	bool pfSuspended = (bool )pvUser;
1598
1599	/*
1600	* The first thread thru here tries to change the state. We shouldn't be
1601	* called again if this fails.
1602	*/
1603	if (pVCpu->idCpu == pVM->cCpus - 1U)
1604	{
1605	PUVM pUVM = pVM->pUVM;
1606	int rc;
1607
1608	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
1609	VMSTATE enmVMState = pVM->enmVMState;
1610	switch (enmVMState)
1611	{
1612	case VMSTATE_RUNNING_LS:
1613	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS, false /fSetRatherThanClearFF/);
1614	rc = VINF_SUCCESS;
1615	break;
1616
1617	case VMSTATE_SUSPENDED_EXT_LS:
1618	case VMSTATE_SUSPENDED_LS: /* (via reset) */
1619	rc = VINF_SUCCESS;
1620	break;
1621
1622	case VMSTATE_DEBUGGING_LS:
1623	rc = VERR_TRY_AGAIN;
1624	break;
1625
1626	case VMSTATE_OFF_LS:
1627	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS, false /fSetRatherThanClearFF/);
1628	rc = VERR_SSM_LIVE_POWERED_OFF;
1629	break;
1630
1631	case VMSTATE_FATAL_ERROR_LS:
1632	vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, false /fSetRatherThanClearFF/);
1633	rc = VERR_SSM_LIVE_FATAL_ERROR;
1634	break;
1635
1636	case VMSTATE_GURU_MEDITATION_LS:
1637	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, false /fSetRatherThanClearFF/);
1638	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1639	break;
1640
1641	case VMSTATE_POWERING_OFF_LS:
1642	case VMSTATE_SUSPENDING_EXT_LS:
1643	case VMSTATE_RESETTING_LS:
1644	default:
1645	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
1646	rc = VERR_VM_UNEXPECTED_VM_STATE;
1647	break;
1648	}
1649	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
1650	if (RT_FAILURE(rc))
1651	{
1652	LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState)));
1653	return rc;
1654	}
1655	}
1656
1657	VMSTATE enmVMState = VMR3GetState(pVM);
1658	AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS,
1659	("%s\n", VMR3GetStateName(enmVMState)),
1660	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1661
1662	/*
1663	* Only EMT(0) have work to do since it's last thru here.
1664	*/
1665	if (pVCpu->idCpu == 0)
1666	{
1667	vmR3SuspendDoWork(pVM);
1668	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1,
1669	VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
1670	if (RT_FAILURE(rc))
1671	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1672
1673	*pfSuspended = true;
1674	}
1675
1676	return VINF_EM_SUSPEND;
1677	}
1678
1679
1680	/**
1681	* EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a
1682	* SSMR3LiveDoStep1 failure.
1683	*
1684	* Doing this as a rendezvous operation avoids all annoying transition
1685	* states.
1686	*
1687	* @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_*
1688	* status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
1689	*
1690	* @param pVM The cross context VM structure.
1691	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1692	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1693	*/
1694	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser)
1695	{
1696	LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1697	bool pfSuspended = (bool )pvUser;
1698	NOREF(pVCpu);
1699
1700	int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 8,
1701	VMSTATE_OFF, VMSTATE_OFF_LS, /* 1 */
1702	VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, /* 2 */
1703	VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, /* 3 */
1704	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_LS, /* 4 */
1705	VMSTATE_SUSPENDED, VMSTATE_SAVING,
1706	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS,
1707	VMSTATE_RUNNING, VMSTATE_RUNNING_LS,
1708	VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS);
1709	if (rc == 1)
1710	rc = VERR_SSM_LIVE_POWERED_OFF;
1711	else if (rc == 2)
1712	rc = VERR_SSM_LIVE_FATAL_ERROR;
1713	else if (rc == 3)
1714	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1715	else if (rc == 4)
1716	{
1717	*pfSuspended = true;
1718	rc = VINF_SUCCESS;
1719	}
1720	else if (rc > 0)
1721	rc = VINF_SUCCESS;
1722	return rc;
1723	}
1724
1725
1726	/**
1727	* EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save.
1728	*
1729	* @returns VBox status code.
1730	* @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called.
1731	*
1732	* @param pVM The cross context VM structure.
1733	* @param pSSM The handle of saved state operation.
1734	*
1735	* @thread EMT(0)
1736	*/
1737	static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM)
1738	{
1739	LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM));
1740	VM_ASSERT_EMT0(pVM);
1741
1742	/*
1743	* Advance the state and mark if VMR3Suspend was called.
1744	*/
1745	int rc = VINF_SUCCESS;
1746	VMSTATE enmVMState = VMR3GetState(pVM);
1747	if (enmVMState == VMSTATE_SUSPENDED_LS)
1748	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS);
1749	else
1750	{
1751	if (enmVMState != VMSTATE_SAVING)
1752	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS);
1753	rc = VINF_SSM_LIVE_SUSPENDED;
1754	}
1755
1756	/*
1757	* Finish up and release the handle. Careful with the status codes.
1758	*/
1759	int rc2 = SSMR3LiveDoStep2(pSSM);
1760	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1761	rc = rc2;
1762
1763	rc2 = SSMR3LiveDone(pSSM);
1764	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1765	rc = rc2;
1766
1767	/*
1768	* Advance to the final state and return.
1769	*/
1770	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1771	Assert(rc > VINF_EM_LAST \|\| rc < VINF_EM_FIRST);
1772	return rc;
1773	}
1774
1775
1776	/**
1777	* Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or
1778	* SSMR3LiveSave.
1779	*
1780	* @returns VBox status code.
1781	*
1782	* @param pVM The cross context VM structure.
1783	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1784	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1785	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1786	* @param pvStreamOpsUser The user argument to the stream methods.
1787	* @param enmAfter What to do afterwards.
1788	* @param pfnProgress Progress callback. Optional.
1789	* @param pvProgressUser User argument for the progress callback.
1790	* @param ppSSM Where to return the saved state handle in case of a
1791	* live snapshot scenario.
1792	* @param fSkipStateChanges Set if we're supposed to skip state changes (FTM delta case)
1793	*
1794	* @thread EMT
1795	*/
1796	static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1797	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, PSSMHANDLE ppSSM,
1798	bool fSkipStateChanges)
1799	{
1800	int rc = VINF_SUCCESS;
1801
1802	LogFlow(("vmR3Save: pVM=%p cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p ppSSM=%p\n",
1803	pVM, cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM));
1804
1805	/*
1806	* Validate input.
1807	*/
1808	AssertPtrNull(pszFilename);
1809	AssertPtrNull(pStreamOps);
1810	AssertPtr(pVM);
1811	Assert( enmAfter == SSMAFTER_DESTROY
1812	\|\| enmAfter == SSMAFTER_CONTINUE
1813	\|\| enmAfter == SSMAFTER_TELEPORT);
1814	AssertPtr(ppSSM);
1815	*ppSSM = NULL;
1816
1817	/*
1818	* Change the state and perform/start the saving.
1819	*/
1820	if (!fSkipStateChanges)
1821	{
1822	rc = vmR3TrySetState(pVM, "VMR3Save", 2,
1823	VMSTATE_SAVING, VMSTATE_SUSPENDED,
1824	VMSTATE_RUNNING_LS, VMSTATE_RUNNING);
1825	}
1826	else
1827	{
1828	Assert(enmAfter != SSMAFTER_TELEPORT);
1829	rc = 1;
1830	}
1831
1832	if (rc == 1 && enmAfter != SSMAFTER_TELEPORT)
1833	{
1834	rc = SSMR3Save(pVM, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser);
1835	if (!fSkipStateChanges)
1836	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1837	}
1838	else if (rc == 2 \|\| enmAfter == SSMAFTER_TELEPORT)
1839	{
1840	Assert(!fSkipStateChanges);
1841	if (enmAfter == SSMAFTER_TELEPORT)
1842	pVM->vm.s.fTeleportedAndNotFullyResumedYet = true;
1843	rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1844	enmAfter, pfnProgress, pvProgressUser, ppSSM);
1845	/* (We're not subject to cancellation just yet.) */
1846	}
1847	else
1848	Assert(RT_FAILURE(rc));
1849	return rc;
1850	}
1851
1852
1853	/**
1854	* Common worker for VMR3Save and VMR3Teleport.
1855	*
1856	* @returns VBox status code.
1857	*
1858	* @param pVM The cross context VM structure.
1859	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1860	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1861	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1862	* @param pvStreamOpsUser The user argument to the stream methods.
1863	* @param enmAfter What to do afterwards.
1864	* @param pfnProgress Progress callback. Optional.
1865	* @param pvProgressUser User argument for the progress callback.
1866	* @param pfSuspended Set if we suspended the VM.
1867	* @param fSkipStateChanges Set if we're supposed to skip state changes (FTM delta case)
1868	*
1869	* @thread Non-EMT
1870	*/
1871	static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime,
1872	const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1873	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended,
1874	bool fSkipStateChanges)
1875	{
1876	/*
1877	* Request the operation in EMT(0).
1878	*/
1879	PSSMHANDLE pSSM;
1880	int rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/,
1881	(PFNRT)vmR3Save, 10, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1882	enmAfter, pfnProgress, pvProgressUser, &pSSM, fSkipStateChanges);
1883	if ( RT_SUCCESS(rc)
1884	&& pSSM)
1885	{
1886	Assert(!fSkipStateChanges);
1887
1888	/*
1889	* Live snapshot.
1890	*
1891	* The state handling here is kind of tricky, doing it on EMT(0) helps
1892	* a bit. See the VMSTATE diagram for details.
1893	*/
1894	rc = SSMR3LiveDoStep1(pSSM);
1895	if (RT_SUCCESS(rc))
1896	{
1897	if (VMR3GetState(pVM) != VMSTATE_SAVING)
1898	for (;;)
1899	{
1900	/* Try suspend the VM. */
1901	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1902	vmR3LiveDoSuspend, pfSuspended);
1903	if (rc != VERR_TRY_AGAIN)
1904	break;
1905
1906	/* Wait for the state to change. */
1907	RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */
1908	}
1909	if (RT_SUCCESS(rc))
1910	rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM);
1911	else
1912	{
1913	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1914	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc)); NOREF(rc2);
1915	}
1916	}
1917	else
1918	{
1919	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1920	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1921
1922	rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, pfSuspended);
1923	if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED)
1924	rc = rc2;
1925	}
1926	}
1927
1928	return rc;
1929	}
1930
1931
1932	/**
1933	* Save current VM state.
1934	*
1935	* Can be used for both saving the state and creating snapshots.
1936	*
1937	* When called for a VM in the Running state, the saved state is created live
1938	* and the VM is only suspended when the final part of the saving is preformed.
1939	* The VM state will not be restored to Running in this case and it's up to the
1940	* caller to call VMR3Resume if this is desirable. (The rational is that the
1941	* caller probably wish to reconfigure the disks before resuming the VM.)
1942	*
1943	* @returns VBox status code.
1944	*
1945	* @param pUVM The VM which state should be saved.
1946	* @param pszFilename The name of the save state file.
1947	* @param fContinueAfterwards Whether continue execution afterwards or not.
1948	* When in doubt, set this to true.
1949	* @param pfnProgress Progress callback. Optional.
1950	* @param pvUser User argument for the progress callback.
1951	* @param pfSuspended Set if we suspended the VM.
1952	*
1953	* @thread Non-EMT.
1954	* @vmstate Suspended or Running
1955	* @vmstateto Saving+Suspended or
1956	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1957	*/
1958	VMMR3DECL(int) VMR3Save(PUVM pUVM, const char pszFilename, bool fContinueAfterwards, PFNVMPROGRESS pfnProgress, void pvUser,
1959	bool *pfSuspended)
1960	{
1961	LogFlow(("VMR3Save: pUVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p pfSuspended=%p\n",
1962	pUVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser, pfSuspended));
1963
1964	/*
1965	* Validate input.
1966	*/
1967	AssertPtr(pfSuspended);
1968	*pfSuspended = false;
1969	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1970	PVM pVM = pUVM->pVM;
1971	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1972	VM_ASSERT_OTHER_THREAD(pVM);
1973	AssertReturn(VALID_PTR(pszFilename), VERR_INVALID_POINTER);
1974	AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
1975	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1976
1977	/*
1978	* Join paths with VMR3Teleport.
1979	*/
1980	SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY;
1981	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
1982	pszFilename, NULL /* pStreamOps /, NULL / pvStreamOpsUser */,
1983	enmAfter, pfnProgress, pvUser, pfSuspended,
1984	false /* fSkipStateChanges */);
1985	LogFlow(("VMR3Save: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1986	return rc;
1987	}
1988
1989	/**
1990	* Save current VM state (used by FTM)
1991	*
1992	*
1993	* @returns VBox status code.
1994	*
1995	* @param pUVM The user mode VM handle.
1996	* @param pStreamOps The stream methods.
1997	* @param pvStreamOpsUser The user argument to the stream methods.
1998	* @param pfSuspended Set if we suspended the VM.
1999	* @param fSkipStateChanges Set if we're supposed to skip state changes (FTM delta case)
2000	*
2001	* @thread Any
2002	* @vmstate Suspended or Running
2003	* @vmstateto Saving+Suspended or
2004	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
2005	*/
2006	VMMR3_INT_DECL(int) VMR3SaveFT(PUVM pUVM, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser, bool pfSuspended, bool fSkipStateChanges)
2007	{
2008	LogFlow(("VMR3SaveFT: pUVM=%p pStreamOps=%p pvSteamOpsUser=%p pfSuspended=%p\n",
2009	pUVM, pStreamOps, pvStreamOpsUser, pfSuspended));
2010
2011	/*
2012	* Validate input.
2013	*/
2014	AssertPtr(pfSuspended);
2015	*pfSuspended = false;
2016	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2017	PVM pVM = pUVM->pVM;
2018	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2019	AssertReturn(pStreamOps, VERR_INVALID_PARAMETER);
2020
2021	/*
2022	* Join paths with VMR3Teleport.
2023	*/
2024	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
2025	NULL, pStreamOps, pvStreamOpsUser,
2026	SSMAFTER_CONTINUE, NULL, NULL, pfSuspended,
2027	fSkipStateChanges);
2028	LogFlow(("VMR3SaveFT: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
2029	return rc;
2030	}
2031
2032
2033	/**
2034	* Teleport the VM (aka live migration).
2035	*
2036	* @returns VBox status code.
2037	*
2038	* @param pUVM The VM which state should be saved.
2039	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
2040	* @param pStreamOps The stream methods.
2041	* @param pvStreamOpsUser The user argument to the stream methods.
2042	* @param pfnProgress Progress callback. Optional.
2043	* @param pvProgressUser User argument for the progress callback.
2044	* @param pfSuspended Set if we suspended the VM.
2045	*
2046	* @thread Non-EMT.
2047	* @vmstate Suspended or Running
2048	* @vmstateto Saving+Suspended or
2049	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
2050	*/
2051	VMMR3DECL(int) VMR3Teleport(PUVM pUVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
2052	PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
2053	{
2054	LogFlow(("VMR3Teleport: pUVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n",
2055	pUVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
2056
2057	/*
2058	* Validate input.
2059	*/
2060	AssertPtr(pfSuspended);
2061	*pfSuspended = false;
2062	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2063	PVM pVM = pUVM->pVM;
2064	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2065	VM_ASSERT_OTHER_THREAD(pVM);
2066	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
2067	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
2068
2069	/*
2070	* Join paths with VMR3Save.
2071	*/
2072	int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime,
2073	NULL /pszFilename/, pStreamOps, pvStreamOpsUser,
2074	SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended,
2075	false /* fSkipStateChanges */);
2076	LogFlow(("VMR3Teleport: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
2077	return rc;
2078	}
2079
2080
2081
2082	/**
2083	* EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream.
2084	*
2085	* @returns VBox status code.
2086	*
2087	* @param pUVM Pointer to the VM.
2088	* @param pszFilename The name of the file. NULL if pStreamOps is used.
2089	* @param pStreamOps The stream methods. NULL if pszFilename is used.
2090	* @param pvStreamOpsUser The user argument to the stream methods.
2091	* @param pfnProgress Progress callback. Optional.
2092	* @param pvProgressUser User argument for the progress callback.
2093	* @param fTeleporting Indicates whether we're teleporting or not.
2094	* @param fSkipStateChanges Set if we're supposed to skip state changes (FTM delta case)
2095	*
2096	* @thread EMT.
2097	*/
2098	static DECLCALLBACK(int) vmR3Load(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
2099	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting,
2100	bool fSkipStateChanges)
2101	{
2102	int rc = VINF_SUCCESS;
2103
2104	LogFlow(("vmR3Load: pUVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
2105	pUVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
2106
2107	/*
2108	* Validate input (paranoia).
2109	*/
2110	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2111	PVM pVM = pUVM->pVM;
2112	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2113	AssertPtrNull(pszFilename);
2114	AssertPtrNull(pStreamOps);
2115	AssertPtrNull(pfnProgress);
2116
2117	if (!fSkipStateChanges)
2118	{
2119	/*
2120	* Change the state and perform the load.
2121	*
2122	* Always perform a relocation round afterwards to make sure hypervisor
2123	* selectors and such are correct.
2124	*/
2125	rc = vmR3TrySetState(pVM, "VMR3Load", 2,
2126	VMSTATE_LOADING, VMSTATE_CREATED,
2127	VMSTATE_LOADING, VMSTATE_SUSPENDED);
2128	if (RT_FAILURE(rc))
2129	return rc;
2130	}
2131	pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting;
2132
2133	uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pUVM);
2134	rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser);
2135	if (RT_SUCCESS(rc))
2136	{
2137	VMR3Relocate(pVM, 0 /offDelta/);
2138	if (!fSkipStateChanges)
2139	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING);
2140	}
2141	else
2142	{
2143	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
2144	if (!fSkipStateChanges)
2145	vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING);
2146
2147	if (cErrorsPriorToSave == VMR3GetErrorCount(pUVM))
2148	rc = VMSetError(pVM, rc, RT_SRC_POS,
2149	N_("Unable to restore the virtual machine's saved state from '%s'. "
2150	"It may be damaged or from an older version of VirtualBox. "
2151	"Please discard the saved state before starting the virtual machine"),
2152	pszFilename);
2153	}
2154
2155	return rc;
2156	}
2157
2158
2159	/**
2160	* Loads a VM state into a newly created VM or a one that is suspended.
2161	*
2162	* To restore a saved state on VM startup, call this function and then resume
2163	* the VM instead of powering it on.
2164	*
2165	* @returns VBox status code.
2166	*
2167	* @param pUVM The user mode VM structure.
2168	* @param pszFilename The name of the save state file.
2169	* @param pfnProgress Progress callback. Optional.
2170	* @param pvUser User argument for the progress callback.
2171	*
2172	* @thread Any thread.
2173	* @vmstate Created, Suspended
2174	* @vmstateto Loading+Suspended
2175	*/
2176	VMMR3DECL(int) VMR3LoadFromFile(PUVM pUVM, const char pszFilename, PFNVMPROGRESS pfnProgress, void pvUser)
2177	{
2178	LogFlow(("VMR3LoadFromFile: pUVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n",
2179	pUVM, pszFilename, pszFilename, pfnProgress, pvUser));
2180
2181	/*
2182	* Validate input.
2183	*/
2184	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2185	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
2186
2187	/*
2188	* Forward the request to EMT(0). No need to setup a rendezvous here
2189	* since there is no execution taking place when this call is allowed.
2190	*/
2191	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 8,
2192	pUVM, pszFilename, (uintptr_t)NULL /pStreamOps/, (uintptr_t)NULL /pvStreamOpsUser/, pfnProgress, pvUser,
2193	false /fTeleporting/, false /* fSkipStateChanges */);
2194	LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc));
2195	return rc;
2196	}
2197
2198
2199	/**
2200	* VMR3LoadFromFile for arbitrary file streams.
2201	*
2202	* @returns VBox status code.
2203	*
2204	* @param pUVM Pointer to the VM.
2205	* @param pStreamOps The stream methods.
2206	* @param pvStreamOpsUser The user argument to the stream methods.
2207	* @param pfnProgress Progress callback. Optional.
2208	* @param pvProgressUser User argument for the progress callback.
2209	*
2210	* @thread Any thread.
2211	* @vmstate Created, Suspended
2212	* @vmstateto Loading+Suspended
2213	*/
2214	VMMR3DECL(int) VMR3LoadFromStream(PUVM pUVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
2215	PFNVMPROGRESS pfnProgress, void *pvProgressUser)
2216	{
2217	LogFlow(("VMR3LoadFromStream: pUVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p\n",
2218	pUVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
2219
2220	/*
2221	* Validate input.
2222	*/
2223	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2224	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
2225
2226	/*
2227	* Forward the request to EMT(0). No need to setup a rendezvous here
2228	* since there is no execution taking place when this call is allowed.
2229	*/
2230	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 8,
2231	pUVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser,
2232	true /fTeleporting/, false /* fSkipStateChanges */);
2233	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
2234	return rc;
2235	}
2236
2237
2238	/**
2239	* Special version for the FT component, it skips state changes.
2240	*
2241	* @returns VBox status code.
2242	*
2243	* @param pUVM The VM handle.
2244	* @param pStreamOps The stream methods.
2245	* @param pvStreamOpsUser The user argument to the stream methods.
2246	*
2247	* @thread Any thread.
2248	* @vmstate Created, Suspended
2249	* @vmstateto Loading+Suspended
2250	*/
2251	VMMR3_INT_DECL(int) VMR3LoadFromStreamFT(PUVM pUVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser)
2252	{
2253	LogFlow(("VMR3LoadFromStreamFT: pUVM=%p pStreamOps=%p pvStreamOpsUser=%p\n", pUVM, pStreamOps, pvStreamOpsUser));
2254
2255	/*
2256	* Validate input.
2257	*/
2258	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2259	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
2260
2261	/*
2262	* Forward the request to EMT(0). No need to setup a rendezvous here
2263	* since there is no execution taking place when this call is allowed.
2264	*/
2265	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 8,
2266	pUVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, NULL, NULL,
2267	true /fTeleporting/, true /* fSkipStateChanges */);
2268	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
2269	return rc;
2270	}
2271
2272	/**
2273	* EMT rendezvous worker for VMR3PowerOff.
2274	*
2275	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict
2276	* return code, see FNVMMEMTRENDEZVOUS.)
2277	*
2278	* @param pVM The cross context VM structure.
2279	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2280	* @param pvUser Ignored.
2281	*/
2282	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser)
2283	{
2284	LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
2285	Assert(!pvUser); NOREF(pvUser);
2286
2287	/*
2288	* The first EMT thru here will change the state to PoweringOff.
2289	*/
2290	if (pVCpu->idCpu == pVM->cCpus - 1)
2291	{
2292	int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 11,
2293	VMSTATE_POWERING_OFF, VMSTATE_RUNNING, /* 1 */
2294	VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, /* 2 */
2295	VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, /* 3 */
2296	VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, /* 4 */
2297	VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, /* 5 */
2298	VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, /* 6 */
2299	VMSTATE_POWERING_OFF, VMSTATE_CREATED, /* 7 / /* @todo update the diagram! */
2300	VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, /* 8 */
2301	VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, /* 9 */
2302	VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS,/* 10 */
2303	VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); /* 11 */
2304	if (RT_FAILURE(rc))
2305	return rc;
2306	if (rc >= 7)
2307	SSMR3Cancel(pVM->pUVM);
2308	}
2309
2310	/*
2311	* Check the state.
2312	*/
2313	VMSTATE enmVMState = VMR3GetState(pVM);
2314	AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF
2315	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
2316	("%s\n", VMR3GetStateName(enmVMState)),
2317	VERR_VM_INVALID_VM_STATE);
2318
2319	/*
2320	* EMT(0) does the actual power off work here after all the other EMTs
2321	* have been thru and entered the STOPPED state.
2322	*/
2323	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED);
2324	if (pVCpu->idCpu == 0)
2325	{
2326	/*
2327	* For debugging purposes, we will log a summary of the guest state at this point.
2328	*/
2329	if (enmVMState != VMSTATE_GURU_MEDITATION)
2330	{
2331	/** @todo make the state dumping at VMR3PowerOff optional. */
2332	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2333	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2334	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2335	RTLogRelPrintf("***\n");
2336	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2337	RTLogRelPrintf("***\n");
2338	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2339	RTLogRelPrintf("***\n");
2340	DBGFR3Info(pVM->pUVM, "activetimers", NULL, DBGFR3InfoLogRelHlp());
2341	RTLogRelPrintf("***\n");
2342	DBGFR3Info(pVM->pUVM, "gdt", NULL, DBGFR3InfoLogRelHlp());
2343	/** @todo dump guest call stack. */
2344	RTLogRelSetBuffering(fOldBuffered);
2345	RTLogRelPrintf("************ End of Guest state at power off *************\n");
2346	}
2347
2348	/*
2349	* Perform the power off notifications and advance the state to
2350	* Off or OffLS.
2351	*/
2352	PDMR3PowerOff(pVM);
2353	DBGFR3PowerOff(pVM);
2354
2355	PUVM pUVM = pVM->pUVM;
2356	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2357	enmVMState = pVM->enmVMState;
2358	if (enmVMState == VMSTATE_POWERING_OFF_LS)
2359	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS, false /fSetRatherThanClearFF/);
2360	else
2361	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF, false /fSetRatherThanClearFF/);
2362	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2363	}
2364	else if (enmVMState != VMSTATE_GURU_MEDITATION)
2365	{
2366	/** @todo make the state dumping at VMR3PowerOff optional. */
2367	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2368	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2369	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2370	RTLogRelPrintf("***\n");
2371	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2372	RTLogRelPrintf("***\n");
2373	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2374	RTLogRelPrintf("***\n");
2375	RTLogRelSetBuffering(fOldBuffered);
2376	RTLogRelPrintf("************ End of Guest state at power off for VCpu %u *************\n", pVCpu->idCpu);
2377	}
2378
2379	return VINF_EM_OFF;
2380	}
2381
2382
2383	/**
2384	* Power off the VM.
2385	*
2386	* @returns VBox status code. When called on EMT, this will be a strict status
2387	* code that has to be propagated up the call stack.
2388	*
2389	* @param pUVM The handle of the VM to be powered off.
2390	*
2391	* @thread Any thread.
2392	* @vmstate Suspended, Running, Guru Meditation, Load Failure
2393	* @vmstateto Off or OffLS
2394	*/
2395	VMMR3DECL(int) VMR3PowerOff(PUVM pUVM)
2396	{
2397	LogFlow(("VMR3PowerOff: pUVM=%p\n", pUVM));
2398	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2399	PVM pVM = pUVM->pVM;
2400	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2401
2402	/*
2403	* Gather all the EMTs to make sure there are no races before
2404	* changing the VM state.
2405	*/
2406	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2407	vmR3PowerOff, NULL);
2408	LogFlow(("VMR3PowerOff: returns %Rrc\n", rc));
2409	return rc;
2410	}
2411
2412
2413	/**
2414	* Destroys the VM.
2415	*
2416	* The VM must be powered off (or never really powered on) to call this
2417	* function. The VM handle is destroyed and can no longer be used up successful
2418	* return.
2419	*
2420	* @returns VBox status code.
2421	*
2422	* @param pUVM The user mode VM handle.
2423	*
2424	* @thread Any none emulation thread.
2425	* @vmstate Off, Created
2426	* @vmstateto N/A
2427	*/
2428	VMMR3DECL(int) VMR3Destroy(PUVM pUVM)
2429	{
2430	LogFlow(("VMR3Destroy: pUVM=%p\n", pUVM));
2431
2432	/*
2433	* Validate input.
2434	*/
2435	if (!pUVM)
2436	return VERR_INVALID_VM_HANDLE;
2437	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2438	PVM pVM = pUVM->pVM;
2439	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2440	AssertLogRelReturn(!VM_IS_EMT(pVM), VERR_VM_THREAD_IS_EMT);
2441
2442	/*
2443	* Change VM state to destroying and aall vmR3Destroy on each of the EMTs
2444	* ending with EMT(0) doing the bulk of the cleanup.
2445	*/
2446	int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF);
2447	if (RT_FAILURE(rc))
2448	return rc;
2449
2450	rc = VMR3ReqCallWait(pVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM);
2451	AssertLogRelRC(rc);
2452
2453	/*
2454	* Wait for EMTs to quit and destroy the UVM.
2455	*/
2456	vmR3DestroyUVM(pUVM, 30000);
2457
2458	LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n"));
2459	return VINF_SUCCESS;
2460	}
2461
2462
2463	/**
2464	* Internal destruction worker.
2465	*
2466	* This is either called from VMR3Destroy via VMR3ReqCallU or from
2467	* vmR3EmulationThreadWithId when EMT(0) terminates after having called
2468	* VMR3Destroy().
2469	*
2470	* When called on EMT(0), it will performed the great bulk of the destruction.
2471	* When called on the other EMTs, they will do nothing and the whole purpose is
2472	* to return VINF_EM_TERMINATE so they break out of their run loops.
2473	*
2474	* @returns VINF_EM_TERMINATE.
2475	* @param pVM The cross context VM structure.
2476	*/
2477	DECLCALLBACK(int) vmR3Destroy(PVM pVM)
2478	{
2479	PUVM pUVM = pVM->pUVM;
2480	PVMCPU pVCpu = VMMGetCpu(pVM);
2481	Assert(pVCpu);
2482	LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu));
2483
2484	/*
2485	* Only VCPU 0 does the full cleanup (last).
2486	*/
2487	if (pVCpu->idCpu == 0)
2488	{
2489	/*
2490	* Dump statistics to the log.
2491	*/
2492	#if defined(VBOX_WITH_STATISTICS) \|\| defined(LOG_ENABLED)
2493	RTLogFlags(NULL, "nodisabled nobuffered");
2494	#endif
2495	//#ifdef VBOX_WITH_STATISTICS
2496	// STAMR3Dump(pUVM, "*");
2497	//#else
2498	LogRel(("*********************** Statistics ***********************\n"));
2499	STAMR3DumpToReleaseLog(pUVM, "*");
2500	LogRel(("******************* End of statistics ********************\n"));
2501	//#endif
2502
2503	/*
2504	* Destroy the VM components.
2505	*/
2506	int rc = TMR3Term(pVM);
2507	AssertRC(rc);
2508	#ifdef VBOX_WITH_DEBUGGER
2509	rc = DBGCTcpTerminate(pUVM, pUVM->vm.s.pvDBGC);
2510	pUVM->vm.s.pvDBGC = NULL;
2511	#endif
2512	AssertRC(rc);
2513	rc = FTMR3Term(pVM);
2514	AssertRC(rc);
2515	rc = PDMR3Term(pVM);
2516	AssertRC(rc);
2517	rc = GIMR3Term(pVM);
2518	AssertRC(rc);
2519	rc = DBGFR3Term(pVM);
2520	AssertRC(rc);
2521	rc = IEMR3Term(pVM);
2522	AssertRC(rc);
2523	rc = EMR3Term(pVM);
2524	AssertRC(rc);
2525	rc = IOMR3Term(pVM);
2526	AssertRC(rc);
2527	#ifdef VBOX_WITH_RAW_MODE
2528	rc = CSAMR3Term(pVM);
2529	AssertRC(rc);
2530	rc = PATMR3Term(pVM);
2531	AssertRC(rc);
2532	#endif
2533	rc = TRPMR3Term(pVM);
2534	AssertRC(rc);
2535	rc = SELMR3Term(pVM);
2536	AssertRC(rc);
2537	#ifdef VBOX_WITH_REM
2538	rc = REMR3Term(pVM);
2539	AssertRC(rc);
2540	#endif
2541	rc = HMR3Term(pVM);
2542	AssertRC(rc);
2543	rc = NEMR3Term(pVM);
2544	AssertRC(rc);
2545	rc = PGMR3Term(pVM);
2546	AssertRC(rc);
2547	rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */
2548	AssertRC(rc);
2549	rc = CPUMR3Term(pVM);
2550	AssertRC(rc);
2551	SSMR3Term(pVM);
2552	rc = PDMR3CritSectBothTerm(pVM);
2553	AssertRC(rc);
2554	rc = MMR3Term(pVM);
2555	AssertRC(rc);
2556
2557	/*
2558	* We're done, tell the other EMTs to quit.
2559	*/
2560	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2561	ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2562	LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE));
2563	}
2564
2565	/*
2566	* Decrement the active EMT count here.
2567	*/
2568	PUVMCPU pUVCpu = &pUVM->aCpus[pVCpu->idCpu];
2569	if (!pUVCpu->vm.s.fBeenThruVmDestroy)
2570	{
2571	pUVCpu->vm.s.fBeenThruVmDestroy = true;
2572	ASMAtomicDecU32(&pUVM->vm.s.cActiveEmts);
2573	}
2574	else
2575	AssertFailed();
2576
2577	return VINF_EM_TERMINATE;
2578	}
2579
2580
2581	/**
2582	* Destroys the UVM portion.
2583	*
2584	* This is called as the final step in the VM destruction or as the cleanup
2585	* in case of a creation failure.
2586	*
2587	* @param pUVM The user mode VM structure.
2588	* @param cMilliesEMTWait The number of milliseconds to wait for the emulation
2589	* threads.
2590	*/
2591	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait)
2592	{
2593	/*
2594	* Signal termination of each the emulation threads and
2595	* wait for them to complete.
2596	*/
2597	/* Signal them - in reverse order since EMT(0) waits for the others. */
2598	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2599	if (pUVM->pVM)
2600	VM_FF_SET(pUVM->pVM, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2601	VMCPUID iCpu = pUVM->cCpus;
2602	while (iCpu-- > 0)
2603	{
2604	VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
2605	RTSemEventSignal(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2606	}
2607
2608	/* Wait for EMT(0), it in turn waits for the rest. */
2609	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2610
2611	RTTHREAD const hSelf = RTThreadSelf();
2612	RTTHREAD hThread = pUVM->aCpus[0].vm.s.ThreadEMT;
2613	if ( hThread != NIL_RTTHREAD
2614	&& hThread != hSelf)
2615	{
2616	int rc2 = RTThreadWait(hThread, RT_MAX(cMilliesEMTWait, 2000), NULL);
2617	if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */
2618	rc2 = RTThreadWait(hThread, 1000, NULL);
2619	AssertLogRelMsgRC(rc2, ("iCpu=0 rc=%Rrc\n", rc2));
2620	if (RT_SUCCESS(rc2))
2621	pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD;
2622	}
2623
2624	/* Just in case we're in a weird failure situation w/o EMT(0) to do the
2625	waiting, wait the other EMTs too. */
2626	for (iCpu = 1; iCpu < pUVM->cCpus; iCpu++)
2627	{
2628	ASMAtomicXchgHandle(&pUVM->aCpus[iCpu].vm.s.ThreadEMT, NIL_RTTHREAD, &hThread);
2629	if (hThread != NIL_RTTHREAD)
2630	{
2631	if (hThread != hSelf)
2632	{
2633	int rc2 = RTThreadWait(hThread, 250 /ms/, NULL);
2634	AssertLogRelMsgRC(rc2, ("iCpu=%u rc=%Rrc\n", iCpu, rc2));
2635	if (RT_SUCCESS(rc2))
2636	continue;
2637	}
2638	pUVM->aCpus[iCpu].vm.s.ThreadEMT = hThread;
2639	}
2640	}
2641
2642	/* Cleanup the semaphores. */
2643	iCpu = pUVM->cCpus;
2644	while (iCpu-- > 0)
2645	{
2646	RTSemEventDestroy(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2647	pUVM->aCpus[iCpu].vm.s.EventSemWait = NIL_RTSEMEVENT;
2648	}
2649
2650	/*
2651	* Free the event semaphores associated with the request packets.
2652	*/
2653	unsigned cReqs = 0;
2654	for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++)
2655	{
2656	PVMREQ pReq = pUVM->vm.s.apReqFree[i];
2657	pUVM->vm.s.apReqFree[i] = NULL;
2658	for (; pReq; pReq = pReq->pNext, cReqs++)
2659	{
2660	pReq->enmState = VMREQSTATE_INVALID;
2661	RTSemEventDestroy(pReq->EventSem);
2662	}
2663	}
2664	Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs);
2665
2666	/*
2667	* Kill all queued requests. (There really shouldn't be any!)
2668	*/
2669	for (unsigned i = 0; i < 10; i++)
2670	{
2671	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pPriorityReqs, NULL, PVMREQ);
2672	if (!pReqHead)
2673	{
2674	pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pNormalReqs, NULL, PVMREQ);
2675	if (!pReqHead)
2676	break;
2677	}
2678	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2679
2680	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2681	{
2682	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2683	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2684	RTSemEventSignal(pReq->EventSem);
2685	RTThreadSleep(2);
2686	RTSemEventDestroy(pReq->EventSem);
2687	}
2688	/* give them a chance to respond before we free the request memory. */
2689	RTThreadSleep(32);
2690	}
2691
2692	/*
2693	* Now all queued VCPU requests (again, there shouldn't be any).
2694	*/
2695	for (VMCPUID idCpu = 0; idCpu < pUVM->cCpus; idCpu++)
2696	{
2697	PUVMCPU pUVCpu = &pUVM->aCpus[idCpu];
2698
2699	for (unsigned i = 0; i < 10; i++)
2700	{
2701	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pPriorityReqs, NULL, PVMREQ);
2702	if (!pReqHead)
2703	{
2704	pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pNormalReqs, NULL, PVMREQ);
2705	if (!pReqHead)
2706	break;
2707	}
2708	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2709
2710	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2711	{
2712	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2713	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2714	RTSemEventSignal(pReq->EventSem);
2715	RTThreadSleep(2);
2716	RTSemEventDestroy(pReq->EventSem);
2717	}
2718	/* give them a chance to respond before we free the request memory. */
2719	RTThreadSleep(32);
2720	}
2721	}
2722
2723	/*
2724	* Make sure the VMMR0.r0 module and whatever else is unloaded.
2725	*/
2726	PDMR3TermUVM(pUVM);
2727
2728	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
2729	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
2730
2731	/*
2732	* Terminate the support library if initialized.
2733	*/
2734	if (pUVM->vm.s.pSession)
2735	{
2736	int rc = SUPR3Term(false /fForced/);
2737	AssertRC(rc);
2738	pUVM->vm.s.pSession = NIL_RTR0PTR;
2739	}
2740
2741	/*
2742	* Release the UVM structure reference.
2743	*/
2744	VMR3ReleaseUVM(pUVM);
2745
2746	/*
2747	* Clean up and flush logs.
2748	*/
2749	#ifdef LOG_ENABLED
2750	RTLogSetCustomPrefixCallback(NULL, NULL, NULL);
2751	#endif
2752	RTLogFlush(NULL);
2753	}
2754
2755
2756	/**
2757	* Worker which checks integrity of some internal structures.
2758	* This is yet another attempt to track down that AVL tree crash.
2759	*/
2760	static void vmR3CheckIntegrity(PVM pVM)
2761	{
2762	#ifdef VBOX_STRICT
2763	int rc = PGMR3CheckIntegrity(pVM);
2764	AssertReleaseRC(rc);
2765	#else
2766	RT_NOREF_PV(pVM);
2767	#endif
2768	}
2769
2770
2771	/**
2772	* EMT rendezvous worker for VMR3ResetFF for doing soft/warm reset.
2773	*
2774	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESCHEDULE.
2775	* (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
2776	*
2777	* @param pVM The cross context VM structure.
2778	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2779	* @param pvUser The reset flags.
2780	*/
2781	static DECLCALLBACK(VBOXSTRICTRC) vmR3SoftReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2782	{
2783	uint32_t fResetFlags = (uint32_t )pvUser;
2784
2785
2786	/*
2787	* The first EMT will try change the state to resetting. If this fails,
2788	* we won't get called for the other EMTs.
2789	*/
2790	if (pVCpu->idCpu == pVM->cCpus - 1)
2791	{
2792	int rc = vmR3TrySetState(pVM, "vmR3ResetSoft", 3,
2793	VMSTATE_SOFT_RESETTING, VMSTATE_RUNNING,
2794	VMSTATE_SOFT_RESETTING, VMSTATE_SUSPENDED,
2795	VMSTATE_SOFT_RESETTING_LS, VMSTATE_RUNNING_LS);
2796	if (RT_FAILURE(rc))
2797	return rc;
2798	}
2799
2800	/*
2801	* Check the state.
2802	*/
2803	VMSTATE enmVMState = VMR3GetState(pVM);
2804	AssertLogRelMsgReturn( enmVMState == VMSTATE_SOFT_RESETTING
2805	\|\| enmVMState == VMSTATE_SOFT_RESETTING_LS,
2806	("%s\n", VMR3GetStateName(enmVMState)),
2807	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2808
2809	/*
2810	* EMT(0) does the full cleanup after all the other EMTs has been
2811	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2812	*
2813	* Because there are per-cpu reset routines and order may/is important,
2814	* the following sequence looks a bit ugly...
2815	*/
2816
2817	/* Reset the VCpu state. */
2818	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2819
2820	/*
2821	* Soft reset the VM components.
2822	*/
2823	if (pVCpu->idCpu == 0)
2824	{
2825	#ifdef VBOX_WITH_REM
2826	REMR3Reset(pVM);
2827	#endif
2828	PDMR3SoftReset(pVM, fResetFlags);
2829	TRPMR3Reset(pVM);
2830	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2831	EMR3Reset(pVM);
2832	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2833	NEMR3Reset(pVM);
2834
2835	/*
2836	* Since EMT(0) is the last to go thru here, it will advance the state.
2837	* (Unlike vmR3HardReset we won't be doing any suspending of live
2838	* migration VMs here since memory is unchanged.)
2839	*/
2840	PUVM pUVM = pVM->pUVM;
2841	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2842	enmVMState = pVM->enmVMState;
2843	if (enmVMState == VMSTATE_SOFT_RESETTING)
2844	{
2845	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2846	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2847	else
2848	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2849	}
2850	else
2851	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING_LS, VMSTATE_SOFT_RESETTING_LS, false /fSetRatherThanClearFF/);
2852	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2853	}
2854
2855	return VINF_EM_RESCHEDULE;
2856	}
2857
2858
2859	/**
2860	* EMT rendezvous worker for VMR3Reset and VMR3ResetFF.
2861	*
2862	* This is called by the emulation threads as a response to the reset request
2863	* issued by VMR3Reset().
2864	*
2865	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This
2866	* is a strict return code, see FNVMMEMTRENDEZVOUS.)
2867	*
2868	* @param pVM The cross context VM structure.
2869	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2870	* @param pvUser Ignored.
2871	*/
2872	static DECLCALLBACK(VBOXSTRICTRC) vmR3HardReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2873	{
2874	Assert(!pvUser); NOREF(pvUser);
2875
2876	/*
2877	* The first EMT will try change the state to resetting. If this fails,
2878	* we won't get called for the other EMTs.
2879	*/
2880	if (pVCpu->idCpu == pVM->cCpus - 1)
2881	{
2882	int rc = vmR3TrySetState(pVM, "vmR3HardReset", 3,
2883	VMSTATE_RESETTING, VMSTATE_RUNNING,
2884	VMSTATE_RESETTING, VMSTATE_SUSPENDED,
2885	VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS);
2886	if (RT_FAILURE(rc))
2887	return rc;
2888	}
2889
2890	/*
2891	* Check the state.
2892	*/
2893	VMSTATE enmVMState = VMR3GetState(pVM);
2894	AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING
2895	\|\| enmVMState == VMSTATE_RESETTING_LS,
2896	("%s\n", VMR3GetStateName(enmVMState)),
2897	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2898
2899	/*
2900	* EMT(0) does the full cleanup after all the other EMTs has been
2901	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2902	*
2903	* Because there are per-cpu reset routines and order may/is important,
2904	* the following sequence looks a bit ugly...
2905	*/
2906	if (pVCpu->idCpu == 0)
2907	vmR3CheckIntegrity(pVM);
2908
2909	/* Reset the VCpu state. */
2910	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2911
2912	/* Clear all pending forced actions. */
2913	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST);
2914
2915	/*
2916	* Reset the VM components.
2917	*/
2918	if (pVCpu->idCpu == 0)
2919	{
2920	#ifdef VBOX_WITH_RAW_MODE
2921	PATMR3Reset(pVM);
2922	CSAMR3Reset(pVM);
2923	#endif
2924	GIMR3Reset(pVM); /* This must come before PDM and TM. */
2925	PDMR3Reset(pVM);
2926	PGMR3Reset(pVM);
2927	SELMR3Reset(pVM);
2928	TRPMR3Reset(pVM);
2929	#ifdef VBOX_WITH_REM
2930	REMR3Reset(pVM);
2931	#endif
2932	IOMR3Reset(pVM);
2933	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2934	TMR3Reset(pVM);
2935	EMR3Reset(pVM);
2936	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2937	NEMR3Reset(pVM);
2938
2939	/*
2940	* Do memory setup.
2941	*/
2942	PGMR3MemSetup(pVM, true /fAtReset/);
2943	PDMR3MemSetup(pVM, true /fAtReset/);
2944
2945	/*
2946	* Since EMT(0) is the last to go thru here, it will advance the state.
2947	* When a live save is active, we will move on to SuspendingLS but
2948	* leave it for VMR3Reset to do the actual suspending due to deadlock risks.
2949	*/
2950	PUVM pUVM = pVM->pUVM;
2951	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2952	enmVMState = pVM->enmVMState;
2953	if (enmVMState == VMSTATE_RESETTING)
2954	{
2955	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2956	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2957	else
2958	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2959	}
2960	else
2961	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS, false /fSetRatherThanClearFF/);
2962	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2963
2964	vmR3CheckIntegrity(pVM);
2965
2966	/*
2967	* Do the suspend bit as well.
2968	* It only requires some EMT(0) work at present.
2969	*/
2970	if (enmVMState != VMSTATE_RESETTING)
2971	{
2972	vmR3SuspendDoWork(pVM);
2973	vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
2974	}
2975	}
2976
2977	return enmVMState == VMSTATE_RESETTING
2978	? VINF_EM_RESET
2979	: VINF_EM_SUSPEND; /** @todo VINF_EM_SUSPEND has lower priority than VINF_EM_RESET, so fix races. Perhaps add a new code for this combined case. */
2980	}
2981
2982
2983	/**
2984	* Internal worker for VMR3Reset, VMR3ResetFF, VMR3TripleFault.
2985	*
2986	* @returns VBox status code.
2987	* @param pVM The cross context VM structure.
2988	* @param fHardReset Whether it's a hard reset or not.
2989	* @param fResetFlags The reset flags (PDMVMRESET_F_XXX).
2990	*/
2991	static VBOXSTRICTRC vmR3ResetCommon(PVM pVM, bool fHardReset, uint32_t fResetFlags)
2992	{
2993	LogFlow(("vmR3ResetCommon: fHardReset=%RTbool fResetFlags=%#x\n", fHardReset, fResetFlags));
2994	int rc;
2995	if (fHardReset)
2996	{
2997	/*
2998	* Hard reset.
2999	*/
3000	/* Check whether we're supposed to power off instead of resetting. */
3001	if (pVM->vm.s.fPowerOffInsteadOfReset)
3002	{
3003	PUVM pUVM = pVM->pUVM;
3004	if ( pUVM->pVmm2UserMethods
3005	&& pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff)
3006	pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff(pUVM->pVmm2UserMethods, pUVM);
3007	return VMR3PowerOff(pUVM);
3008	}
3009
3010	/* Gather all the EMTs to make sure there are no races before changing
3011	the VM state. */
3012	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
3013	vmR3HardReset, NULL);
3014	}
3015	else
3016	{
3017	/*
3018	* Soft reset. Since we only support this with a single CPU active,
3019	* we must be on EMT #0 here.
3020	*/
3021	VM_ASSERT_EMT0(pVM);
3022	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
3023	vmR3SoftReset, &fResetFlags);
3024	}
3025
3026	LogFlow(("vmR3ResetCommon: returns %Rrc\n", rc));
3027	return rc;
3028	}
3029
3030
3031
3032	/**
3033	* Reset the current VM.
3034	*
3035	* @returns VBox status code.
3036	* @param pUVM The VM to reset.
3037	*/
3038	VMMR3DECL(int) VMR3Reset(PUVM pUVM)
3039	{
3040	LogFlow(("VMR3Reset:\n"));
3041	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3042	PVM pVM = pUVM->pVM;
3043	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3044
3045	return VBOXSTRICTRC_VAL(vmR3ResetCommon(pVM, true, 0));
3046	}
3047
3048
3049	/**
3050	* Handle the reset force flag or triple fault.
3051	*
3052	* This handles both soft and hard resets (see PDMVMRESET_F_XXX).
3053	*
3054	* @returns VBox status code.
3055	* @param pVM The cross context VM structure.
3056	* @thread EMT
3057	*
3058	* @remarks Caller is expected to clear the VM_FF_RESET force flag.
3059	*/
3060	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetFF(PVM pVM)
3061	{
3062	LogFlow(("VMR3ResetFF:\n"));
3063
3064	/*
3065	* First consult the firmware on whether this is a hard or soft reset.
3066	*/
3067	uint32_t fResetFlags;
3068	bool fHardReset = PDMR3GetResetInfo(pVM, 0 /fOverride/, &fResetFlags);
3069	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
3070	}
3071
3072
3073	/**
3074	* For handling a CPU reset on triple fault.
3075	*
3076	* According to one mainboard manual, a CPU triple fault causes the 286 CPU to
3077	* send a SHUTDOWN signal to the chipset. The chipset responds by sending a
3078	* RESET signal to the CPU. So, it should be very similar to a soft/warm reset.
3079	*
3080	* @returns VBox status code.
3081	* @param pVM The cross context VM structure.
3082	* @thread EMT
3083	*/
3084	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetTripleFault(PVM pVM)
3085	{
3086	LogFlow(("VMR3ResetTripleFault:\n"));
3087
3088	/*
3089	* First consult the firmware on whether this is a hard or soft reset.
3090	*/
3091	uint32_t fResetFlags;
3092	bool fHardReset = PDMR3GetResetInfo(pVM, PDMVMRESET_F_TRIPLE_FAULT, &fResetFlags);
3093	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
3094	}
3095
3096
3097	/**
3098	* Gets the user mode VM structure pointer given Pointer to the VM.
3099	*
3100	* @returns Pointer to the user mode VM structure on success. NULL if @a pVM is
3101	* invalid (asserted).
3102	* @param pVM The cross context VM structure.
3103	* @sa VMR3GetVM, VMR3RetainUVM
3104	*/
3105	VMMR3DECL(PUVM) VMR3GetUVM(PVM pVM)
3106	{
3107	VM_ASSERT_VALID_EXT_RETURN(pVM, NULL);
3108	return pVM->pUVM;
3109	}
3110
3111
3112	/**
3113	* Gets the shared VM structure pointer given the pointer to the user mode VM
3114	* structure.
3115	*
3116	* @returns Pointer to the VM.
3117	* NULL if @a pUVM is invalid (asserted) or if no shared VM structure
3118	* is currently associated with it.
3119	* @param pUVM The user mode VM handle.
3120	* @sa VMR3GetUVM
3121	*/
3122	VMMR3DECL(PVM) VMR3GetVM(PUVM pUVM)
3123	{
3124	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
3125	return pUVM->pVM;
3126	}
3127
3128
3129	/**
3130	* Retain the user mode VM handle.
3131	*
3132	* @returns Reference count.
3133	* UINT32_MAX if @a pUVM is invalid.
3134	*
3135	* @param pUVM The user mode VM handle.
3136	* @sa VMR3ReleaseUVM
3137	*/
3138	VMMR3DECL(uint32_t) VMR3RetainUVM(PUVM pUVM)
3139	{
3140	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
3141	uint32_t cRefs = ASMAtomicIncU32(&pUVM->vm.s.cUvmRefs);
3142	AssertMsg(cRefs > 0 && cRefs < _64K, ("%u\n", cRefs));
3143	return cRefs;
3144	}
3145
3146
3147	/**
3148	* Does the final release of the UVM structure.
3149	*
3150	* @param pUVM The user mode VM handle.
3151	*/
3152	static void vmR3DoReleaseUVM(PUVM pUVM)
3153	{
3154	/*
3155	* Free the UVM.
3156	*/
3157	Assert(!pUVM->pVM);
3158
3159	MMR3HeapFree(pUVM->vm.s.pszName);
3160	pUVM->vm.s.pszName = NULL;
3161
3162	MMR3TermUVM(pUVM);
3163	STAMR3TermUVM(pUVM);
3164
3165	ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX);
3166	RTTlsFree(pUVM->vm.s.idxTLS);
3167	RTMemPageFree(pUVM, RT_OFFSETOF(UVM, aCpus[pUVM->cCpus]));
3168	}
3169
3170
3171	/**
3172	* Releases a refernece to the mode VM handle.
3173	*
3174	* @returns The new reference count, 0 if destroyed.
3175	* UINT32_MAX if @a pUVM is invalid.
3176	*
3177	* @param pUVM The user mode VM handle.
3178	* @sa VMR3RetainUVM
3179	*/
3180	VMMR3DECL(uint32_t) VMR3ReleaseUVM(PUVM pUVM)
3181	{
3182	if (!pUVM)
3183	return 0;
3184	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
3185	uint32_t cRefs = ASMAtomicDecU32(&pUVM->vm.s.cUvmRefs);
3186	if (!cRefs)
3187	vmR3DoReleaseUVM(pUVM);
3188	else
3189	AssertMsg(cRefs < _64K, ("%u\n", cRefs));
3190	return cRefs;
3191	}
3192
3193
3194	/**
3195	* Gets the VM name.
3196	*
3197	* @returns Pointer to a read-only string containing the name. NULL if called
3198	* too early.
3199	* @param pUVM The user mode VM handle.
3200	*/
3201	VMMR3DECL(const char *) VMR3GetName(PUVM pUVM)
3202	{
3203	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
3204	return pUVM->vm.s.pszName;
3205	}
3206
3207
3208	/**
3209	* Gets the VM UUID.
3210	*
3211	* @returns pUuid on success, NULL on failure.
3212	* @param pUVM The user mode VM handle.
3213	* @param pUuid Where to store the UUID.
3214	*/
3215	VMMR3DECL(PRTUUID) VMR3GetUuid(PUVM pUVM, PRTUUID pUuid)
3216	{
3217	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
3218	AssertPtrReturn(pUuid, NULL);
3219
3220	*pUuid = pUVM->vm.s.Uuid;
3221	return pUuid;
3222	}
3223
3224
3225	/**
3226	* Gets the current VM state.
3227	*
3228	* @returns The current VM state.
3229	* @param pVM The cross context VM structure.
3230	* @thread Any
3231	*/
3232	VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM)
3233	{
3234	AssertMsgReturn(RT_VALID_ALIGNED_PTR(pVM, PAGE_SIZE), ("%p\n", pVM), VMSTATE_TERMINATED);
3235	VMSTATE enmVMState = pVM->enmVMState;
3236	return enmVMState >= VMSTATE_CREATING && enmVMState <= VMSTATE_TERMINATED ? enmVMState : VMSTATE_TERMINATED;
3237	}
3238
3239
3240	/**
3241	* Gets the current VM state.
3242	*
3243	* @returns The current VM state.
3244	* @param pUVM The user-mode VM handle.
3245	* @thread Any
3246	*/
3247	VMMR3DECL(VMSTATE) VMR3GetStateU(PUVM pUVM)
3248	{
3249	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSTATE_TERMINATED);
3250	if (RT_UNLIKELY(!pUVM->pVM))
3251	return VMSTATE_TERMINATED;
3252	return pUVM->pVM->enmVMState;
3253	}
3254
3255
3256	/**
3257	* Gets the state name string for a VM state.
3258	*
3259	* @returns Pointer to the state name. (readonly)
3260	* @param enmState The state.
3261	*/
3262	VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState)
3263	{
3264	switch (enmState)
3265	{
3266	case VMSTATE_CREATING: return "CREATING";
3267	case VMSTATE_CREATED: return "CREATED";
3268	case VMSTATE_LOADING: return "LOADING";
3269	case VMSTATE_POWERING_ON: return "POWERING_ON";
3270	case VMSTATE_RESUMING: return "RESUMING";
3271	case VMSTATE_RUNNING: return "RUNNING";
3272	case VMSTATE_RUNNING_LS: return "RUNNING_LS";
3273	case VMSTATE_RUNNING_FT: return "RUNNING_FT";
3274	case VMSTATE_RESETTING: return "RESETTING";
3275	case VMSTATE_RESETTING_LS: return "RESETTING_LS";
3276	case VMSTATE_SOFT_RESETTING: return "SOFT_RESETTING";
3277	case VMSTATE_SOFT_RESETTING_LS: return "SOFT_RESETTING_LS";
3278	case VMSTATE_SUSPENDED: return "SUSPENDED";
3279	case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS";
3280	case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS";
3281	case VMSTATE_SUSPENDING: return "SUSPENDING";
3282	case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS";
3283	case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS";
3284	case VMSTATE_SAVING: return "SAVING";
3285	case VMSTATE_DEBUGGING: return "DEBUGGING";
3286	case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS";
3287	case VMSTATE_POWERING_OFF: return "POWERING_OFF";
3288	case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS";
3289	case VMSTATE_FATAL_ERROR: return "FATAL_ERROR";
3290	case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS";
3291	case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION";
3292	case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS";
3293	case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE";
3294	case VMSTATE_OFF: return "OFF";
3295	case VMSTATE_OFF_LS: return "OFF_LS";
3296	case VMSTATE_DESTROYING: return "DESTROYING";
3297	case VMSTATE_TERMINATED: return "TERMINATED";
3298
3299	default:
3300	AssertMsgFailed(("Unknown state %d\n", enmState));
3301	return "Unknown!\n";
3302	}
3303	}
3304
3305
3306	/**
3307	* Validates the state transition in strict builds.
3308	*
3309	* @returns true if valid, false if not.
3310	*
3311	* @param enmStateOld The old (current) state.
3312	* @param enmStateNew The proposed new state.
3313	*
3314	* @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE
3315	* diagram (under State Machine Diagram).
3316	*/
3317	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew)
3318	{
3319	#ifndef VBOX_STRICT
3320	RT_NOREF2(enmStateOld, enmStateNew);
3321	#else
3322	switch (enmStateOld)
3323	{
3324	case VMSTATE_CREATING:
3325	AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3326	break;
3327
3328	case VMSTATE_CREATED:
3329	AssertMsgReturn( enmStateNew == VMSTATE_LOADING
3330	\|\| enmStateNew == VMSTATE_POWERING_ON
3331	\|\| enmStateNew == VMSTATE_POWERING_OFF
3332	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3333	break;
3334
3335	case VMSTATE_LOADING:
3336	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3337	\|\| enmStateNew == VMSTATE_LOAD_FAILURE
3338	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3339	break;
3340
3341	case VMSTATE_POWERING_ON:
3342	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3343	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3344	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3345	break;
3346
3347	case VMSTATE_RESUMING:
3348	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3349	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3350	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3351	break;
3352
3353	case VMSTATE_RUNNING:
3354	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3355	\|\| enmStateNew == VMSTATE_SUSPENDING
3356	\|\| enmStateNew == VMSTATE_RESETTING
3357	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3358	\|\| enmStateNew == VMSTATE_RUNNING_LS
3359	\|\| enmStateNew == VMSTATE_RUNNING_FT
3360	\|\| enmStateNew == VMSTATE_DEBUGGING
3361	\|\| enmStateNew == VMSTATE_FATAL_ERROR
3362	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
3363	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3364	break;
3365
3366	case VMSTATE_RUNNING_LS:
3367	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS
3368	\|\| enmStateNew == VMSTATE_SUSPENDING_LS
3369	\|\| enmStateNew == VMSTATE_SUSPENDING_EXT_LS
3370	\|\| enmStateNew == VMSTATE_RESETTING_LS
3371	\|\| enmStateNew == VMSTATE_SOFT_RESETTING_LS
3372	\|\| enmStateNew == VMSTATE_RUNNING
3373	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3374	\|\| enmStateNew == VMSTATE_FATAL_ERROR_LS
3375	\|\| enmStateNew == VMSTATE_GURU_MEDITATION_LS
3376	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3377	break;
3378
3379	case VMSTATE_RUNNING_FT:
3380	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3381	\|\| enmStateNew == VMSTATE_FATAL_ERROR
3382	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
3383	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3384	break;
3385
3386	case VMSTATE_RESETTING:
3387	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3388	break;
3389
3390	case VMSTATE_SOFT_RESETTING:
3391	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3392	break;
3393
3394	case VMSTATE_RESETTING_LS:
3395	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS
3396	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3397	break;
3398
3399	case VMSTATE_SOFT_RESETTING_LS:
3400	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING_LS
3401	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3402	break;
3403
3404	case VMSTATE_SUSPENDING:
3405	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3406	break;
3407
3408	case VMSTATE_SUSPENDING_LS:
3409	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3410	\|\| enmStateNew == VMSTATE_SUSPENDED_LS
3411	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3412	break;
3413
3414	case VMSTATE_SUSPENDING_EXT_LS:
3415	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3416	\|\| enmStateNew == VMSTATE_SUSPENDED_EXT_LS
3417	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3418	break;
3419
3420	case VMSTATE_SUSPENDED:
3421	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3422	\|\| enmStateNew == VMSTATE_SAVING
3423	\|\| enmStateNew == VMSTATE_RESETTING
3424	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3425	\|\| enmStateNew == VMSTATE_RESUMING
3426	\|\| enmStateNew == VMSTATE_LOADING
3427	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3428	break;
3429
3430	case VMSTATE_SUSPENDED_LS:
3431	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3432	\|\| enmStateNew == VMSTATE_SAVING
3433	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3434	break;
3435
3436	case VMSTATE_SUSPENDED_EXT_LS:
3437	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3438	\|\| enmStateNew == VMSTATE_SAVING
3439	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3440	break;
3441
3442	case VMSTATE_SAVING:
3443	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3444	break;
3445
3446	case VMSTATE_DEBUGGING:
3447	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3448	\|\| enmStateNew == VMSTATE_POWERING_OFF
3449	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3450	break;
3451
3452	case VMSTATE_DEBUGGING_LS:
3453	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3454	\|\| enmStateNew == VMSTATE_RUNNING_LS
3455	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3456	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3457	break;
3458
3459	case VMSTATE_POWERING_OFF:
3460	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3461	break;
3462
3463	case VMSTATE_POWERING_OFF_LS:
3464	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3465	\|\| enmStateNew == VMSTATE_OFF_LS
3466	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3467	break;
3468
3469	case VMSTATE_OFF:
3470	AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3471	break;
3472
3473	case VMSTATE_OFF_LS:
3474	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3475	break;
3476
3477	case VMSTATE_FATAL_ERROR:
3478	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3479	break;
3480
3481	case VMSTATE_FATAL_ERROR_LS:
3482	AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR
3483	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3484	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3485	break;
3486
3487	case VMSTATE_GURU_MEDITATION:
3488	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3489	\|\| enmStateNew == VMSTATE_POWERING_OFF
3490	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3491	break;
3492
3493	case VMSTATE_GURU_MEDITATION_LS:
3494	AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION
3495	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3496	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3497	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3498	break;
3499
3500	case VMSTATE_LOAD_FAILURE:
3501	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3502	break;
3503
3504	case VMSTATE_DESTROYING:
3505	AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3506	break;
3507
3508	case VMSTATE_TERMINATED:
3509	default:
3510	AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3511	break;
3512	}
3513	#endif /* VBOX_STRICT */
3514	return true;
3515	}
3516
3517
3518	/**
3519	* Does the state change callouts.
3520	*
3521	* The caller owns the AtStateCritSect.
3522	*
3523	* @param pVM The cross context VM structure.
3524	* @param pUVM The UVM handle.
3525	* @param enmStateNew The New state.
3526	* @param enmStateOld The old state.
3527	*/
3528	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3529	{
3530	LogRel(("Changing the VM state from '%s' to '%s'\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3531
3532	for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext)
3533	{
3534	pCur->pfnAtState(pUVM, enmStateNew, enmStateOld, pCur->pvUser);
3535	if ( enmStateNew != VMSTATE_DESTROYING
3536	&& pVM->enmVMState == VMSTATE_DESTROYING)
3537	break;
3538	AssertMsg(pVM->enmVMState == enmStateNew,
3539	("You are not allowed to change the state while in the change callback, except "
3540	"from destroying the VM. There are restrictions in the way the state changes "
3541	"are propagated up to the EM execution loop and it makes the program flow very "
3542	"difficult to follow. (%s, expected %s, old %s)\n",
3543	VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew),
3544	VMR3GetStateName(enmStateOld)));
3545	}
3546	}
3547
3548
3549	/**
3550	* Sets the current VM state, with the AtStatCritSect already entered.
3551	*
3552	* @param pVM The cross context VM structure.
3553	* @param pUVM The UVM handle.
3554	* @param enmStateNew The new state.
3555	* @param enmStateOld The old state.
3556	* @param fSetRatherThanClearFF The usual behavior is to clear the
3557	* VM_FF_CHECK_VM_STATE force flag, but for
3558	* some transitions (-> guru) we need to kick
3559	* the other EMTs to stop what they're doing.
3560	*/
3561	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF)
3562	{
3563	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3564
3565	AssertMsg(pVM->enmVMState == enmStateOld,
3566	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3567
3568	pUVM->vm.s.enmPrevVMState = enmStateOld;
3569	pVM->enmVMState = enmStateNew;
3570
3571	if (!fSetRatherThanClearFF)
3572	VM_FF_CLEAR(pVM, VM_FF_CHECK_VM_STATE);
3573	else if (pVM->cCpus > 0)
3574	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
3575
3576	vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld);
3577	}
3578
3579
3580	/**
3581	* Sets the current VM state.
3582	*
3583	* @param pVM The cross context VM structure.
3584	* @param enmStateNew The new state.
3585	* @param enmStateOld The old state (for asserting only).
3586	*/
3587	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3588	{
3589	PUVM pUVM = pVM->pUVM;
3590	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3591
3592	RT_NOREF_PV(enmStateOld);
3593	AssertMsg(pVM->enmVMState == enmStateOld,
3594	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3595	vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState, false /fSetRatherThanClearFF/);
3596
3597	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3598	}
3599
3600
3601	/**
3602	* Tries to perform a state transition.
3603	*
3604	* @returns The 1-based ordinal of the succeeding transition.
3605	* VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure.
3606	*
3607	* @param pVM The cross context VM structure.
3608	* @param pszWho Who is trying to change it.
3609	* @param cTransitions The number of transitions in the ellipsis.
3610	* @param ... Transition pairs; new, old.
3611	*/
3612	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...)
3613	{
3614	va_list va;
3615	VMSTATE enmStateNew = VMSTATE_CREATED;
3616	VMSTATE enmStateOld = VMSTATE_CREATED;
3617
3618	#ifdef VBOX_STRICT
3619	/*
3620	* Validate the input first.
3621	*/
3622	va_start(va, cTransitions);
3623	for (unsigned i = 0; i < cTransitions; i++)
3624	{
3625	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3626	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3627	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3628	}
3629	va_end(va);
3630	#endif
3631
3632	/*
3633	* Grab the lock and see if any of the proposed transitions works out.
3634	*/
3635	va_start(va, cTransitions);
3636	int rc = VERR_VM_INVALID_VM_STATE;
3637	PUVM pUVM = pVM->pUVM;
3638	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3639
3640	VMSTATE enmStateCur = pVM->enmVMState;
3641
3642	for (unsigned i = 0; i < cTransitions; i++)
3643	{
3644	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3645	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3646	if (enmStateCur == enmStateOld)
3647	{
3648	vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld, false /fSetRatherThanClearFF/);
3649	rc = i + 1;
3650	break;
3651	}
3652	}
3653
3654	if (RT_FAILURE(rc))
3655	{
3656	/*
3657	* Complain about it.
3658	*/
3659	if (cTransitions == 1)
3660	{
3661	LogRel(("%s: %s -> %s failed, because the VM state is actually %s\n",
3662	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur)));
3663	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3664	N_("%s failed because the VM state is %s instead of %s"),
3665	pszWho, VMR3GetStateName(enmStateCur), VMR3GetStateName(enmStateOld));
3666	AssertMsgFailed(("%s: %s -> %s failed, because the VM state is actually %s\n",
3667	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur)));
3668	}
3669	else
3670	{
3671	va_end(va);
3672	va_start(va, cTransitions);
3673	LogRel(("%s:\n", pszWho));
3674	for (unsigned i = 0; i < cTransitions; i++)
3675	{
3676	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3677	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3678	LogRel(("%s%s -> %s",
3679	i ? ", " : " ", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3680	}
3681	LogRel((" failed, because the VM state is actually %s\n", VMR3GetStateName(enmStateCur)));
3682	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3683	N_("%s failed because the current VM state, %s, was not found in the state transition table (old state %s)"),
3684	pszWho, VMR3GetStateName(enmStateCur), VMR3GetStateName(enmStateOld));
3685	AssertMsgFailed(("%s - state=%s, see release log for full details. Check the cTransitions passed us.\n",
3686	pszWho, VMR3GetStateName(enmStateCur)));
3687	}
3688	}
3689
3690	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3691	va_end(va);
3692	Assert(rc > 0 \|\| rc < 0);
3693	return rc;
3694	}
3695
3696
3697	/**
3698	* Interface used by EM to signal that it's entering the guru meditation state.
3699	*
3700	* This will notifying other threads.
3701	*
3702	* @returns true if the state changed to Guru, false if no state change.
3703	* @param pVM The cross context VM structure.
3704	*/
3705	VMMR3_INT_DECL(bool) VMR3SetGuruMeditation(PVM pVM)
3706	{
3707	PUVM pUVM = pVM->pUVM;
3708	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3709
3710	VMSTATE enmStateCur = pVM->enmVMState;
3711	bool fRc = true;
3712	if (enmStateCur == VMSTATE_RUNNING)
3713	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING, true /fSetRatherThanClearFF/);
3714	else if (enmStateCur == VMSTATE_RUNNING_LS)
3715	{
3716	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS, true /fSetRatherThanClearFF/);
3717	SSMR3Cancel(pUVM);
3718	}
3719	else
3720	fRc = false;
3721
3722	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3723	return fRc;
3724	}
3725
3726
3727	/**
3728	* Called by vmR3EmulationThreadWithId just before the VM structure is freed.
3729	*
3730	* @param pVM The cross context VM structure.
3731	*/
3732	void vmR3SetTerminated(PVM pVM)
3733	{
3734	vmR3SetState(pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING);
3735	}
3736
3737
3738	/**
3739	* Checks if the VM was teleported and hasn't been fully resumed yet.
3740	*
3741	* This applies to both sides of the teleportation since we may leave a working
3742	* clone behind and the user is allowed to resume this...
3743	*
3744	* @returns true / false.
3745	* @param pVM The cross context VM structure.
3746	* @thread Any thread.
3747	*/
3748	VMMR3_INT_DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM)
3749	{
3750	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
3751	return pVM->vm.s.fTeleportedAndNotFullyResumedYet;
3752	}
3753
3754
3755	/**
3756	* Registers a VM state change callback.
3757	*
3758	* You are not allowed to call any function which changes the VM state from a
3759	* state callback.
3760	*
3761	* @returns VBox status code.
3762	* @param pUVM The VM handle.
3763	* @param pfnAtState Pointer to callback.
3764	* @param pvUser User argument.
3765	* @thread Any.
3766	*/
3767	VMMR3DECL(int) VMR3AtStateRegister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3768	{
3769	LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3770
3771	/*
3772	* Validate input.
3773	*/
3774	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3775	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3776
3777	/*
3778	* Allocate a new record.
3779	*/
3780	PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3781	if (!pNew)
3782	return VERR_NO_MEMORY;
3783
3784	/* fill */
3785	pNew->pfnAtState = pfnAtState;
3786	pNew->pvUser = pvUser;
3787
3788	/* insert */
3789	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3790	pNew->pNext = *pUVM->vm.s.ppAtStateNext;
3791	*pUVM->vm.s.ppAtStateNext = pNew;
3792	pUVM->vm.s.ppAtStateNext = &pNew->pNext;
3793	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3794
3795	return VINF_SUCCESS;
3796	}
3797
3798
3799	/**
3800	* Deregisters a VM state change callback.
3801	*
3802	* @returns VBox status code.
3803	* @param pUVM The VM handle.
3804	* @param pfnAtState Pointer to callback.
3805	* @param pvUser User argument.
3806	* @thread Any.
3807	*/
3808	VMMR3DECL(int) VMR3AtStateDeregister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3809	{
3810	LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3811
3812	/*
3813	* Validate input.
3814	*/
3815	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3816	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3817
3818	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3819
3820	/*
3821	* Search the list for the entry.
3822	*/
3823	PVMATSTATE pPrev = NULL;
3824	PVMATSTATE pCur = pUVM->vm.s.pAtState;
3825	while ( pCur
3826	&& ( pCur->pfnAtState != pfnAtState
3827	\|\| pCur->pvUser != pvUser))
3828	{
3829	pPrev = pCur;
3830	pCur = pCur->pNext;
3831	}
3832	if (!pCur)
3833	{
3834	AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState));
3835	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3836	return VERR_FILE_NOT_FOUND;
3837	}
3838
3839	/*
3840	* Unlink it.
3841	*/
3842	if (pPrev)
3843	{
3844	pPrev->pNext = pCur->pNext;
3845	if (!pCur->pNext)
3846	pUVM->vm.s.ppAtStateNext = &pPrev->pNext;
3847	}
3848	else
3849	{
3850	pUVM->vm.s.pAtState = pCur->pNext;
3851	if (!pCur->pNext)
3852	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
3853	}
3854
3855	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3856
3857	/*
3858	* Free it.
3859	*/
3860	pCur->pfnAtState = NULL;
3861	pCur->pNext = NULL;
3862	MMR3HeapFree(pCur);
3863
3864	return VINF_SUCCESS;
3865	}
3866
3867
3868	/**
3869	* Registers a VM error callback.
3870	*
3871	* @returns VBox status code.
3872	* @param pUVM The VM handle.
3873	* @param pfnAtError Pointer to callback.
3874	* @param pvUser User argument.
3875	* @thread Any.
3876	*/
3877	VMMR3DECL(int) VMR3AtErrorRegister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3878	{
3879	LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3880
3881	/*
3882	* Validate input.
3883	*/
3884	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3885	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3886
3887	/*
3888	* Allocate a new record.
3889	*/
3890	PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3891	if (!pNew)
3892	return VERR_NO_MEMORY;
3893
3894	/* fill */
3895	pNew->pfnAtError = pfnAtError;
3896	pNew->pvUser = pvUser;
3897
3898	/* insert */
3899	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3900	pNew->pNext = *pUVM->vm.s.ppAtErrorNext;
3901	*pUVM->vm.s.ppAtErrorNext = pNew;
3902	pUVM->vm.s.ppAtErrorNext = &pNew->pNext;
3903	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3904
3905	return VINF_SUCCESS;
3906	}
3907
3908
3909	/**
3910	* Deregisters a VM error callback.
3911	*
3912	* @returns VBox status code.
3913	* @param pUVM The VM handle.
3914	* @param pfnAtError Pointer to callback.
3915	* @param pvUser User argument.
3916	* @thread Any.
3917	*/
3918	VMMR3DECL(int) VMR3AtErrorDeregister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3919	{
3920	LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3921
3922	/*
3923	* Validate input.
3924	*/
3925	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3926	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3927
3928	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3929
3930	/*
3931	* Search the list for the entry.
3932	*/
3933	PVMATERROR pPrev = NULL;
3934	PVMATERROR pCur = pUVM->vm.s.pAtError;
3935	while ( pCur
3936	&& ( pCur->pfnAtError != pfnAtError
3937	\|\| pCur->pvUser != pvUser))
3938	{
3939	pPrev = pCur;
3940	pCur = pCur->pNext;
3941	}
3942	if (!pCur)
3943	{
3944	AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError));
3945	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3946	return VERR_FILE_NOT_FOUND;
3947	}
3948
3949	/*
3950	* Unlink it.
3951	*/
3952	if (pPrev)
3953	{
3954	pPrev->pNext = pCur->pNext;
3955	if (!pCur->pNext)
3956	pUVM->vm.s.ppAtErrorNext = &pPrev->pNext;
3957	}
3958	else
3959	{
3960	pUVM->vm.s.pAtError = pCur->pNext;
3961	if (!pCur->pNext)
3962	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
3963	}
3964
3965	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3966
3967	/*
3968	* Free it.
3969	*/
3970	pCur->pfnAtError = NULL;
3971	pCur->pNext = NULL;
3972	MMR3HeapFree(pCur);
3973
3974	return VINF_SUCCESS;
3975	}
3976
3977
3978	/**
3979	* Ellipsis to va_list wrapper for calling pfnAtError.
3980	*/
3981	static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3982	{
3983	va_list va;
3984	va_start(va, pszFormat);
3985	pCur->pfnAtError(pVM->pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va);
3986	va_end(va);
3987	}
3988
3989
3990	/**
3991	* This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV.
3992	* The message is found in VMINT.
3993	*
3994	* @param pVM The cross context VM structure.
3995	* @thread EMT.
3996	*/
3997	VMMR3_INT_DECL(void) VMR3SetErrorWorker(PVM pVM)
3998	{
3999	VM_ASSERT_EMT(pVM);
4000	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Congrats!\n"));
4001
4002	/*
4003	* Unpack the error (if we managed to format one).
4004	*/
4005	PVMERROR pErr = pVM->vm.s.pErrorR3;
4006	const char *pszFile = NULL;
4007	const char *pszFunction = NULL;
4008	uint32_t iLine = 0;
4009	const char *pszMessage;
4010	int32_t rc = VERR_MM_HYPER_NO_MEMORY;
4011	if (pErr)
4012	{
4013	AssertCompile(sizeof(const char) == sizeof(uint8_t));
4014	if (pErr->offFile)
4015	pszFile = (const char *)pErr + pErr->offFile;
4016	iLine = pErr->iLine;
4017	if (pErr->offFunction)
4018	pszFunction = (const char *)pErr + pErr->offFunction;
4019	if (pErr->offMessage)
4020	pszMessage = (const char *)pErr + pErr->offMessage;
4021	else
4022	pszMessage = "No message!";
4023	}
4024	else
4025	pszMessage = "No message! (Failed to allocate memory to put the error message in!)";
4026
4027	/*
4028	* Call the at error callbacks.
4029	*/
4030	PUVM pUVM = pVM->pUVM;
4031	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4032	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
4033	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
4034	vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage);
4035	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4036	}
4037
4038
4039	/**
4040	* Gets the number of errors raised via VMSetError.
4041	*
4042	* This can be used avoid double error messages.
4043	*
4044	* @returns The error count.
4045	* @param pUVM The VM handle.
4046	*/
4047	VMMR3_INT_DECL(uint32_t) VMR3GetErrorCount(PUVM pUVM)
4048	{
4049	AssertPtrReturn(pUVM, 0);
4050	AssertReturn(pUVM->u32Magic == UVM_MAGIC, 0);
4051	return pUVM->vm.s.cErrors;
4052	}
4053
4054
4055	/**
4056	* Creation time wrapper for vmR3SetErrorUV.
4057	*
4058	* @returns rc.
4059	* @param pUVM Pointer to the user mode VM structure.
4060	* @param rc The VBox status code.
4061	* @param SRC_POS The source position of this error.
4062	* @param pszFormat Format string.
4063	* @param ... The arguments.
4064	* @thread Any thread.
4065	*/
4066	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
4067	{
4068	va_list va;
4069	va_start(va, pszFormat);
4070	vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va);
4071	va_end(va);
4072	return rc;
4073	}
4074
4075
4076	/**
4077	* Worker which calls everyone listening to the VM error messages.
4078	*
4079	* @param pUVM Pointer to the user mode VM structure.
4080	* @param rc The VBox status code.
4081	* @param SRC_POS The source position of this error.
4082	* @param pszFormat Format string.
4083	* @param pArgs Pointer to the format arguments.
4084	* @thread EMT
4085	*/
4086	DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char pszFormat, va_list pArgs)
4087	{
4088	/*
4089	* Log the error.
4090	*/
4091	va_list va3;
4092	va_copy(va3, *pArgs);
4093	RTLogRelPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
4094	"VMSetError: %N\n",
4095	pszFile, iLine, pszFunction, rc,
4096	pszFormat, &va3);
4097	va_end(va3);
4098
4099	#ifdef LOG_ENABLED
4100	va_copy(va3, *pArgs);
4101	RTLogPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
4102	"%N\n",
4103	pszFile, iLine, pszFunction, rc,
4104	pszFormat, &va3);
4105	va_end(va3);
4106	#endif
4107
4108	/*
4109	* Make a copy of the message.
4110	*/
4111	if (pUVM->pVM)
4112	vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs);
4113
4114	/*
4115	* Call the at error callbacks.
4116	*/
4117	bool fCalledSomeone = false;
4118	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4119	ASMAtomicIncU32(&pUVM->vm.s.cErrors);
4120	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
4121	{
4122	va_list va2;
4123	va_copy(va2, *pArgs);
4124	pCur->pfnAtError(pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2);
4125	va_end(va2);
4126	fCalledSomeone = true;
4127	}
4128	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4129	}
4130
4131
4132	/**
4133	* Sets the error message.
4134	*
4135	* @returns rc. Meaning you can do:
4136	* @code
4137	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
4138	* @endcode
4139	* @param pUVM The user mode VM handle.
4140	* @param rc VBox status code.
4141	* @param SRC_POS Use RT_SRC_POS.
4142	* @param pszFormat Error message format string.
4143	* @param ... Error message arguments.
4144	* @thread Any
4145	*/
4146	VMMR3DECL(int) VMR3SetError(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
4147	{
4148	va_list va;
4149	va_start(va, pszFormat);
4150	int rcRet = VMR3SetErrorV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
4151	va_end(va);
4152	return rcRet;
4153	}
4154
4155
4156	/**
4157	* Sets the error message.
4158	*
4159	* @returns rc. Meaning you can do:
4160	* @code
4161	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
4162	* @endcode
4163	* @param pUVM The user mode VM handle.
4164	* @param rc VBox status code.
4165	* @param SRC_POS Use RT_SRC_POS.
4166	* @param pszFormat Error message format string.
4167	* @param va Error message arguments.
4168	* @thread Any
4169	*/
4170	VMMR3DECL(int) VMR3SetErrorV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
4171	{
4172	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4173
4174	/* Take shortcut when called on EMT, skipping VM handle requirement + validation. */
4175	if (VMR3GetVMCPUThread(pUVM) != NIL_RTTHREAD)
4176	{
4177	va_list vaCopy;
4178	va_copy(vaCopy, va);
4179	vmR3SetErrorUV(pUVM, rc, RT_SRC_POS_ARGS, pszFormat, &vaCopy);
4180	va_end(vaCopy);
4181	return rc;
4182	}
4183
4184	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
4185	return VMSetErrorV(pUVM->pVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
4186	}
4187
4188
4189
4190	/**
4191	* Registers a VM runtime error callback.
4192	*
4193	* @returns VBox status code.
4194	* @param pUVM The user mode VM structure.
4195	* @param pfnAtRuntimeError Pointer to callback.
4196	* @param pvUser User argument.
4197	* @thread Any.
4198	*/
4199	VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
4200	{
4201	LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
4202
4203	/*
4204	* Validate input.
4205	*/
4206	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
4207	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4208
4209	/*
4210	* Allocate a new record.
4211	*/
4212	PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
4213	if (!pNew)
4214	return VERR_NO_MEMORY;
4215
4216	/* fill */
4217	pNew->pfnAtRuntimeError = pfnAtRuntimeError;
4218	pNew->pvUser = pvUser;
4219
4220	/* insert */
4221	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4222	pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext;
4223	*pUVM->vm.s.ppAtRuntimeErrorNext = pNew;
4224	pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext;
4225	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4226
4227	return VINF_SUCCESS;
4228	}
4229
4230
4231	/**
4232	* Deregisters a VM runtime error callback.
4233	*
4234	* @returns VBox status code.
4235	* @param pUVM The user mode VM handle.
4236	* @param pfnAtRuntimeError Pointer to callback.
4237	* @param pvUser User argument.
4238	* @thread Any.
4239	*/
4240	VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
4241	{
4242	LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
4243
4244	/*
4245	* Validate input.
4246	*/
4247	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
4248	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4249
4250	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4251
4252	/*
4253	* Search the list for the entry.
4254	*/
4255	PVMATRUNTIMEERROR pPrev = NULL;
4256	PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError;
4257	while ( pCur
4258	&& ( pCur->pfnAtRuntimeError != pfnAtRuntimeError
4259	\|\| pCur->pvUser != pvUser))
4260	{
4261	pPrev = pCur;
4262	pCur = pCur->pNext;
4263	}
4264	if (!pCur)
4265	{
4266	AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError));
4267	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4268	return VERR_FILE_NOT_FOUND;
4269	}
4270
4271	/*
4272	* Unlink it.
4273	*/
4274	if (pPrev)
4275	{
4276	pPrev->pNext = pCur->pNext;
4277	if (!pCur->pNext)
4278	pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext;
4279	}
4280	else
4281	{
4282	pUVM->vm.s.pAtRuntimeError = pCur->pNext;
4283	if (!pCur->pNext)
4284	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
4285	}
4286
4287	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4288
4289	/*
4290	* Free it.
4291	*/
4292	pCur->pfnAtRuntimeError = NULL;
4293	pCur->pNext = NULL;
4294	MMR3HeapFree(pCur);
4295
4296	return VINF_SUCCESS;
4297	}
4298
4299
4300	/**
4301	* EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change
4302	* the state to FatalError(LS).
4303	*
4304	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
4305	* return code, see FNVMMEMTRENDEZVOUS.)
4306	*
4307	* @param pVM The cross context VM structure.
4308	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4309	* @param pvUser Ignored.
4310	*/
4311	static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser)
4312	{
4313	NOREF(pVCpu);
4314	Assert(!pvUser); NOREF(pvUser);
4315
4316	/*
4317	* The first EMT thru here changes the state.
4318	*/
4319	if (pVCpu->idCpu == pVM->cCpus - 1)
4320	{
4321	int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2,
4322	VMSTATE_FATAL_ERROR, VMSTATE_RUNNING,
4323	VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS);
4324	if (RT_FAILURE(rc))
4325	return rc;
4326	if (rc == 2)
4327	SSMR3Cancel(pVM->pUVM);
4328
4329	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
4330	}
4331
4332	/* This'll make sure we get out of whereever we are (e.g. REM). */
4333	return VINF_EM_SUSPEND;
4334	}
4335
4336
4337	/**
4338	* Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV.
4339	*
4340	* This does the common parts after the error has been saved / retrieved.
4341	*
4342	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4343	*
4344	* @param pVM The cross context VM structure.
4345	* @param fFlags The error flags.
4346	* @param pszErrorId Error ID string.
4347	* @param pszFormat Format string.
4348	* @param pVa Pointer to the format arguments.
4349	*/
4350	static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4351	{
4352	LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags));
4353	PUVM pUVM = pVM->pUVM;
4354
4355	/*
4356	* Take actions before the call.
4357	*/
4358	int rc;
4359	if (fFlags & VMSETRTERR_FLAGS_FATAL)
4360	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
4361	vmR3SetRuntimeErrorChangeState, NULL);
4362	else if (fFlags & VMSETRTERR_FLAGS_SUSPEND)
4363	rc = VMR3Suspend(pUVM, VMSUSPENDREASON_RUNTIME_ERROR);
4364	else
4365	rc = VINF_SUCCESS;
4366
4367	/*
4368	* Do the callback round.
4369	*/
4370	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4371	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
4372	for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext)
4373	{
4374	va_list va;
4375	va_copy(va, *pVa);
4376	pCur->pfnAtRuntimeError(pUVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va);
4377	va_end(va);
4378	}
4379	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4380
4381	return rc;
4382	}
4383
4384
4385	/**
4386	* Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon.
4387	*/
4388	static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
4389	{
4390	va_list va;
4391	va_start(va, pszFormat);
4392	int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va);
4393	va_end(va);
4394	return rc;
4395	}
4396
4397
4398	/**
4399	* This is a worker function for RC and Ring-0 calls to VMSetError and
4400	* VMSetErrorV.
4401	*
4402	* The message is found in VMINT.
4403	*
4404	* @returns VBox status code, see VMSetRuntimeError.
4405	* @param pVM The cross context VM structure.
4406	* @thread EMT.
4407	*/
4408	VMMR3_INT_DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM)
4409	{
4410	VM_ASSERT_EMT(pVM);
4411	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n"));
4412
4413	/*
4414	* Unpack the error (if we managed to format one).
4415	*/
4416	const char *pszErrorId = "SetRuntimeError";
4417	const char *pszMessage = "No message!";
4418	uint32_t fFlags = VMSETRTERR_FLAGS_FATAL;
4419	PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3;
4420	if (pErr)
4421	{
4422	AssertCompile(sizeof(const char) == sizeof(uint8_t));
4423	if (pErr->offErrorId)
4424	pszErrorId = (const char *)pErr + pErr->offErrorId;
4425	if (pErr->offMessage)
4426	pszMessage = (const char *)pErr + pErr->offMessage;
4427	fFlags = pErr->fFlags;
4428	}
4429
4430	/*
4431	* Join cause with vmR3SetRuntimeErrorV.
4432	*/
4433	return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4434	}
4435
4436
4437	/**
4438	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4439	*
4440	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4441	*
4442	* @param pVM The cross context VM structure.
4443	* @param fFlags The error flags.
4444	* @param pszErrorId Error ID string.
4445	* @param pszMessage The error message residing the MM heap.
4446	*
4447	* @thread EMT
4448	*/
4449	DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char pszErrorId, char pszMessage)
4450	{
4451	#if 0 /** @todo make copy of the error msg. */
4452	/*
4453	* Make a copy of the message.
4454	*/
4455	va_list va2;
4456	va_copy(va2, *pVa);
4457	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4458	va_end(va2);
4459	#endif
4460
4461	/*
4462	* Join paths with VMR3SetRuntimeErrorWorker.
4463	*/
4464	int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4465	MMR3HeapFree(pszMessage);
4466	return rc;
4467	}
4468
4469
4470	/**
4471	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4472	*
4473	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4474	*
4475	* @param pVM The cross context VM structure.
4476	* @param fFlags The error flags.
4477	* @param pszErrorId Error ID string.
4478	* @param pszFormat Format string.
4479	* @param pVa Pointer to the format arguments.
4480	*
4481	* @thread EMT
4482	*/
4483	DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4484	{
4485	/*
4486	* Make a copy of the message.
4487	*/
4488	va_list va2;
4489	va_copy(va2, *pVa);
4490	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4491	va_end(va2);
4492
4493	/*
4494	* Join paths with VMR3SetRuntimeErrorWorker.
4495	*/
4496	return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa);
4497	}
4498
4499
4500	/**
4501	* Gets the number of runtime errors raised via VMR3SetRuntimeError.
4502	*
4503	* This can be used avoid double error messages.
4504	*
4505	* @returns The runtime error count.
4506	* @param pUVM The user mode VM handle.
4507	*/
4508	VMMR3_INT_DECL(uint32_t) VMR3GetRuntimeErrorCount(PUVM pUVM)
4509	{
4510	return pUVM->vm.s.cRuntimeErrors;
4511	}
4512
4513
4514	/**
4515	* Gets the ID virtual of the virtual CPU associated with the calling thread.
4516	*
4517	* @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT.
4518	*
4519	* @param pVM The cross context VM structure.
4520	*/
4521	VMMR3_INT_DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM)
4522	{
4523	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4524	return pUVCpu
4525	? pUVCpu->idCpu
4526	: NIL_VMCPUID;
4527	}
4528
4529
4530	/**
4531	* Checks if the VM is long-mode (64-bit) capable or not.
4532	* @returns true if VM can operate in long-mode, false
4533	* otherwise.
4534	*
4535	* @param pVM The cross context VM structure.
4536	*/
4537	VMMR3_INT_DECL(bool) VMR3IsLongModeAllowed(PVM pVM)
4538	{
4539	/** @todo NEM: Fixme log mode allowed stuff. */
4540	if (HMIsEnabled(pVM))
4541	return HMIsLongModeAllowed(pVM);
4542	return false;
4543	}
4544
4545
4546	/**
4547	* Returns the native ID of the current EMT VMCPU thread.
4548	*
4549	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4550	* @param pVM The cross context VM structure.
4551	* @thread EMT
4552	*/
4553	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM)
4554	{
4555	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4556
4557	if (!pUVCpu)
4558	return NIL_RTNATIVETHREAD;
4559
4560	return pUVCpu->vm.s.NativeThreadEMT;
4561	}
4562
4563
4564	/**
4565	* Returns the native ID of the current EMT VMCPU thread.
4566	*
4567	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4568	* @param pUVM The user mode VM structure.
4569	* @thread EMT
4570	*/
4571	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM)
4572	{
4573	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4574
4575	if (!pUVCpu)
4576	return NIL_RTNATIVETHREAD;
4577
4578	return pUVCpu->vm.s.NativeThreadEMT;
4579	}
4580
4581
4582	/**
4583	* Returns the handle of the current EMT VMCPU thread.
4584	*
4585	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4586	* @param pUVM The user mode VM handle.
4587	* @thread EMT
4588	*/
4589	VMMR3DECL(RTTHREAD) VMR3GetVMCPUThread(PUVM pUVM)
4590	{
4591	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4592
4593	if (!pUVCpu)
4594	return NIL_RTTHREAD;
4595
4596	return pUVCpu->vm.s.ThreadEMT;
4597	}
4598
4599
4600	/**
4601	* Returns the handle of the current EMT VMCPU thread.
4602	*
4603	* @returns The IPRT thread handle.
4604	* @param pUVCpu The user mode CPU handle.
4605	* @thread EMT
4606	*/
4607	VMMR3_INT_DECL(RTTHREAD) VMR3GetThreadHandle(PUVMCPU pUVCpu)
4608	{
4609	return pUVCpu->vm.s.ThreadEMT;
4610	}
4611
4612
4613	/**
4614	* Return the package and core ID of a CPU.
4615	*
4616	* @returns VBOX status code.
4617	* @param pUVM The user mode VM handle.
4618	* @param idCpu Virtual CPU to get the ID from.
4619	* @param pidCpuCore Where to store the core ID of the virtual CPU.
4620	* @param pidCpuPackage Where to store the package ID of the virtual CPU.
4621	*
4622	*/
4623	VMMR3DECL(int) VMR3GetCpuCoreAndPackageIdFromCpuId(PUVM pUVM, VMCPUID idCpu, uint32_t pidCpuCore, uint32_t pidCpuPackage)
4624	{
4625	/*
4626	* Validate input.
4627	*/
4628	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4629	PVM pVM = pUVM->pVM;
4630	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4631	AssertPtrReturn(pidCpuCore, VERR_INVALID_POINTER);
4632	AssertPtrReturn(pidCpuPackage, VERR_INVALID_POINTER);
4633	if (idCpu >= pVM->cCpus)
4634	return VERR_INVALID_CPU_ID;
4635
4636	/*
4637	* Set return values.
4638	*/
4639	#ifdef VBOX_WITH_MULTI_CORE
4640	*pidCpuCore = idCpu;
4641	*pidCpuPackage = 0;
4642	#else
4643	*pidCpuCore = 0;
4644	*pidCpuPackage = idCpu;
4645	#endif
4646
4647	return VINF_SUCCESS;
4648	}
4649
4650
4651	/**
4652	* Worker for VMR3HotUnplugCpu.
4653	*
4654	* @returns VINF_EM_WAIT_SPIP (strict status code).
4655	* @param pVM The cross context VM structure.
4656	* @param idCpu The current CPU.
4657	*/
4658	static DECLCALLBACK(int) vmR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4659	{
4660	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
4661	VMCPU_ASSERT_EMT(pVCpu);
4662
4663	/*
4664	* Reset per CPU resources.
4665	*
4666	* Actually only needed for VT-x because the CPU seems to be still in some
4667	* paged mode and startup fails after a new hot plug event. SVM works fine
4668	* even without this.
4669	*/
4670	Log(("vmR3HotUnplugCpu for VCPU %u\n", idCpu));
4671	PGMR3ResetCpu(pVM, pVCpu);
4672	PDMR3ResetCpu(pVCpu);
4673	TRPMR3ResetCpu(pVCpu);
4674	CPUMR3ResetCpu(pVM, pVCpu);
4675	EMR3ResetCpu(pVCpu);
4676	HMR3ResetCpu(pVCpu);
4677	NEMR3ResetCpu(pVCpu, false /fInitIpi/);
4678	return VINF_EM_WAIT_SIPI;
4679	}
4680
4681
4682	/**
4683	* Hot-unplugs a CPU from the guest.
4684	*
4685	* @returns VBox status code.
4686	* @param pUVM The user mode VM handle.
4687	* @param idCpu Virtual CPU to perform the hot unplugging operation on.
4688	*/
4689	VMMR3DECL(int) VMR3HotUnplugCpu(PUVM pUVM, VMCPUID idCpu)
4690	{
4691	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4692	PVM pVM = pUVM->pVM;
4693	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4694	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4695
4696	/** @todo r=bird: Don't destroy the EMT, it'll break VMMR3EmtRendezvous and
4697	* broadcast requests. Just note down somewhere that the CPU is
4698	* offline and send it to SPIP wait. Maybe modify VMCPUSTATE and push
4699	* it out of the EM loops when offline. */
4700	return VMR3ReqCallNoWaitU(pUVM, idCpu, (PFNRT)vmR3HotUnplugCpu, 2, pVM, idCpu);
4701	}
4702
4703
4704	/**
4705	* Hot-plugs a CPU on the guest.
4706	*
4707	* @returns VBox status code.
4708	* @param pUVM The user mode VM handle.
4709	* @param idCpu Virtual CPU to perform the hot plugging operation on.
4710	*/
4711	VMMR3DECL(int) VMR3HotPlugCpu(PUVM pUVM, VMCPUID idCpu)
4712	{
4713	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4714	PVM pVM = pUVM->pVM;
4715	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4716	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4717
4718	/** @todo r-bird: Just mark it online and make sure it waits on SPIP. */
4719	return VINF_SUCCESS;
4720	}
4721
4722
4723	/**
4724	* Changes the VMM execution cap.
4725	*
4726	* @returns VBox status code.
4727	* @param pUVM The user mode VM structure.
4728	* @param uCpuExecutionCap New CPU execution cap in precent, 1-100. Where
4729	* 100 is max performance (default).
4730	*/
4731	VMMR3DECL(int) VMR3SetCpuExecutionCap(PUVM pUVM, uint32_t uCpuExecutionCap)
4732	{
4733	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4734	PVM pVM = pUVM->pVM;
4735	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4736	AssertReturn(uCpuExecutionCap > 0 && uCpuExecutionCap <= 100, VERR_INVALID_PARAMETER);
4737
4738	Log(("VMR3SetCpuExecutionCap: new priority = %d\n", uCpuExecutionCap));
4739	/* Note: not called from EMT. */
4740	pVM->uCpuExecutionCap = uCpuExecutionCap;
4741	return VINF_SUCCESS;
4742	}
4743
4744
4745	/**
4746	* Control whether the VM should power off when resetting.
4747	*
4748	* @returns VBox status code.
4749	* @param pUVM The user mode VM handle.
4750	* @param fPowerOffInsteadOfReset Flag whether the VM should power off when
4751	* resetting.
4752	*/
4753	VMMR3DECL(int) VMR3SetPowerOffInsteadOfReset(PUVM pUVM, bool fPowerOffInsteadOfReset)
4754	{
4755	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4756	PVM pVM = pUVM->pVM;
4757	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4758
4759	/* Note: not called from EMT. */
4760	pVM->vm.s.fPowerOffInsteadOfReset = fPowerOffInsteadOfReset;
4761	return VINF_SUCCESS;
4762	}
4763

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source: vbox/trunk/src/VBox/VMM/VMMR3/VM.cpp@ 71699

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