VM.cpp@ 95243

Last change on this file since 95243 was 95243, checked in by vboxsync, 3 years ago
VMM/vmR3SetRuntimeErrorCommon: Don't call VMR3Suspend unless the VM is running. bugref:10111
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1	/* $Id: VM.cpp 95243 2022-06-09 13:18:05Z vboxsync $ */
2	/** @file
3	* VM - Virtual Machine
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 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	#include <VBox/vmm/nem.h>
61	#include <VBox/vmm/apic.h>
62	#include <VBox/vmm/tm.h>
63	#include <VBox/vmm/stam.h>
64	#include <VBox/vmm/iom.h>
65	#include <VBox/vmm/ssm.h>
66	#include <VBox/vmm/hm.h>
67	#include <VBox/vmm/gim.h>
68	#include <VBox/vmm/gcm.h>
69	#include "VMInternal.h"
70	#include <VBox/vmm/vmcc.h>
71
72	#include <VBox/sup.h>
73	#if defined(VBOX_WITH_DTRACE_R3) && !defined(VBOX_WITH_NATIVE_DTRACE)
74	# include <VBox/VBoxTpG.h>
75	#endif
76	#include <VBox/dbg.h>
77	#include <VBox/err.h>
78	#include <VBox/param.h>
79	#include <VBox/log.h>
80	#include <iprt/assert.h>
81	#include <iprt/alloca.h>
82	#include <iprt/asm.h>
83	#include <iprt/env.h>
84	#include <iprt/mem.h>
85	#include <iprt/semaphore.h>
86	#include <iprt/string.h>
87	#ifdef RT_OS_DARWIN
88	# include <iprt/system.h>
89	#endif
90	#include <iprt/time.h>
91	#include <iprt/thread.h>
92	#include <iprt/uuid.h>
93
94
95	/*********************************************************************************************************************************
96	* Internal Functions *
97	*********************************************************************************************************************************/
98	static int vmR3CreateUVM(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, PUVM *ppUVM);
99	static DECLCALLBACK(int) vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM);
100	static int vmR3ReadBaseConfig(PVM pVM, PUVM pUVM, uint32_t cCpus);
101	static int vmR3InitRing3(PVM pVM, PUVM pUVM);
102	static int vmR3InitRing0(PVM pVM);
103	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat);
104	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait);
105	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew);
106	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
107	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...);
108	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF);
109	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
110	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(6, 7);
111
112
113	/**
114	* Creates a virtual machine by calling the supplied configuration constructor.
115	*
116	* On successful returned the VM is powered, i.e. VMR3PowerOn() should be
117	* called to start the execution.
118	*
119	* @returns 0 on success.
120	* @returns VBox error code on failure.
121	* @param cCpus Number of virtual CPUs for the new VM.
122	* @param pVmm2UserMethods An optional method table that the VMM can use
123	* to make the user perform various action, like
124	* for instance state saving.
125	* @param pfnVMAtError Pointer to callback function for setting VM
126	* errors. This was added as an implicit call to
127	* VMR3AtErrorRegister() since there is no way the
128	* caller can get to the VM handle early enough to
129	* do this on its own.
130	* This is called in the context of an EMT.
131	* @param pvUserVM The user argument passed to pfnVMAtError.
132	* @param pfnCFGMConstructor Pointer to callback function for constructing the VM configuration tree.
133	* This is called in the context of an EMT0.
134	* @param pvUserCFGM The user argument passed to pfnCFGMConstructor.
135	* @param ppVM Where to optionally store the 'handle' of the
136	* created VM.
137	* @param ppUVM Where to optionally store the user 'handle' of
138	* the created VM, this includes one reference as
139	* if VMR3RetainUVM() was called. The caller
140	* MUST remember to pass the returned value to
141	* VMR3ReleaseUVM() once done with the handle.
142	*/
143	VMMR3DECL(int) VMR3Create(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods,
144	PFNVMATERROR pfnVMAtError, void *pvUserVM,
145	PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM,
146	PVM ppVM, PUVM ppUVM)
147	{
148	LogFlow(("VMR3Create: cCpus=%RU32 pVmm2UserMethods=%p pfnVMAtError=%p pvUserVM=%p pfnCFGMConstructor=%p pvUserCFGM=%p ppVM=%p ppUVM=%p\n",
149	cCpus, pVmm2UserMethods, pfnVMAtError, pvUserVM, pfnCFGMConstructor, pvUserCFGM, ppVM, ppUVM));
150
151	if (pVmm2UserMethods)
152	{
153	AssertPtrReturn(pVmm2UserMethods, VERR_INVALID_POINTER);
154	AssertReturn(pVmm2UserMethods->u32Magic == VMM2USERMETHODS_MAGIC, VERR_INVALID_PARAMETER);
155	AssertReturn(pVmm2UserMethods->u32Version == VMM2USERMETHODS_VERSION, VERR_INVALID_PARAMETER);
156	AssertPtrNullReturn(pVmm2UserMethods->pfnSaveState, VERR_INVALID_POINTER);
157	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyEmtInit, VERR_INVALID_POINTER);
158	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyEmtTerm, VERR_INVALID_POINTER);
159	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyPdmtInit, VERR_INVALID_POINTER);
160	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyPdmtTerm, VERR_INVALID_POINTER);
161	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff, VERR_INVALID_POINTER);
162	AssertReturn(pVmm2UserMethods->u32EndMagic == VMM2USERMETHODS_MAGIC, VERR_INVALID_PARAMETER);
163	}
164	AssertPtrNullReturn(pfnVMAtError, VERR_INVALID_POINTER);
165	AssertPtrNullReturn(pfnCFGMConstructor, VERR_INVALID_POINTER);
166	AssertPtrNullReturn(ppVM, VERR_INVALID_POINTER);
167	AssertPtrNullReturn(ppUVM, VERR_INVALID_POINTER);
168	AssertReturn(ppVM \|\| ppUVM, VERR_INVALID_PARAMETER);
169
170	/*
171	* Validate input.
172	*/
173	AssertLogRelMsgReturn(cCpus > 0 && cCpus <= VMM_MAX_CPU_COUNT, ("%RU32\n", cCpus), VERR_TOO_MANY_CPUS);
174
175	/*
176	* Create the UVM so we can register the at-error callback
177	* and consolidate a bit of cleanup code.
178	*/
179	PUVM pUVM = NULL; /* shuts up gcc */
180	int rc = vmR3CreateUVM(cCpus, pVmm2UserMethods, &pUVM);
181	if (RT_FAILURE(rc))
182	return rc;
183	if (pfnVMAtError)
184	rc = VMR3AtErrorRegister(pUVM, pfnVMAtError, pvUserVM);
185	if (RT_SUCCESS(rc))
186	{
187	/*
188	* Initialize the support library creating the session for this VM.
189	*/
190	rc = SUPR3Init(&pUVM->vm.s.pSession);
191	if (RT_SUCCESS(rc))
192	{
193	#if defined(VBOX_WITH_DTRACE_R3) && !defined(VBOX_WITH_NATIVE_DTRACE)
194	/* Now that we've opened the device, we can register trace probes. */
195	static bool s_fRegisteredProbes = false;
196	if (!SUPR3IsDriverless() && ASMAtomicCmpXchgBool(&s_fRegisteredProbes, true, false))
197	SUPR3TracerRegisterModule(~(uintptr_t)0, "VBoxVMM", &g_VTGObjHeader, (uintptr_t)&g_VTGObjHeader,
198	SUP_TRACER_UMOD_FLAGS_SHARED);
199	#endif
200
201	/*
202	* Call vmR3CreateU in the EMT thread and wait for it to finish.
203	*
204	* Note! VMCPUID_ANY is used here because VMR3ReqQueueU would have trouble
205	* submitting a request to a specific VCPU without a pVM. So, to make
206	* sure init is running on EMT(0), vmR3EmulationThreadWithId makes sure
207	* that only EMT(0) is servicing VMCPUID_ANY requests when pVM is NULL.
208	*/
209	PVMREQ pReq;
210	rc = VMR3ReqCallU(pUVM, VMCPUID_ANY, &pReq, RT_INDEFINITE_WAIT, VMREQFLAGS_VBOX_STATUS,
211	(PFNRT)vmR3CreateU, 4, pUVM, cCpus, pfnCFGMConstructor, pvUserCFGM);
212	if (RT_SUCCESS(rc))
213	{
214	rc = pReq->iStatus;
215	VMR3ReqFree(pReq);
216	if (RT_SUCCESS(rc))
217	{
218	/*
219	* Success!
220	*/
221	if (ppVM)
222	*ppVM = pUVM->pVM;
223	if (ppUVM)
224	{
225	VMR3RetainUVM(pUVM);
226	*ppUVM = pUVM;
227	}
228	LogFlow(("VMR3Create: returns VINF_SUCCESS (pVM=%p, pUVM=%p\n", pUVM->pVM, pUVM));
229	return VINF_SUCCESS;
230	}
231	}
232	else
233	AssertMsgFailed(("VMR3ReqCallU failed rc=%Rrc\n", rc));
234
235	/*
236	* An error occurred during VM creation. Set the error message directly
237	* using the initial callback, as the callback list might not exist yet.
238	*/
239	const char *pszError;
240	switch (rc)
241	{
242	case VERR_VMX_IN_VMX_ROOT_MODE:
243	#ifdef RT_OS_LINUX
244	pszError = N_("VirtualBox can't operate in VMX root mode. "
245	"Please disable the KVM kernel extension, recompile your kernel and reboot");
246	#else
247	pszError = N_("VirtualBox can't operate in VMX root mode. Please close all other virtualization programs.");
248	#endif
249	break;
250
251	#ifndef RT_OS_DARWIN
252	case VERR_HM_CONFIG_MISMATCH:
253	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
254	"This hardware extension is required by the VM configuration");
255	break;
256	#endif
257
258	case VERR_SVM_IN_USE:
259	#ifdef RT_OS_LINUX
260	pszError = N_("VirtualBox can't enable the AMD-V extension. "
261	"Please disable the KVM kernel extension, recompile your kernel and reboot");
262	#else
263	pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs.");
264	#endif
265	break;
266
267	#ifdef RT_OS_LINUX
268	case VERR_SUPDRV_COMPONENT_NOT_FOUND:
269	pszError = N_("One of the kernel modules was not successfully loaded. Make sure "
270	"that VirtualBox is correctly installed, and if you are using EFI "
271	"Secure Boot that the modules are signed if necessary in the right "
272	"way for your host system. Then try to recompile and reload the "
273	"kernel modules by executing "
274	"'/sbin/vboxconfig' as root");
275	break;
276	#endif
277
278	case VERR_RAW_MODE_INVALID_SMP:
279	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
280	"VirtualBox requires this hardware extension to emulate more than one "
281	"guest CPU");
282	break;
283
284	case VERR_SUPDRV_KERNEL_TOO_OLD_FOR_VTX:
285	#ifdef RT_OS_LINUX
286	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
287	"extension. Either upgrade your kernel to Linux 2.6.13 or later or disable "
288	"the VT-x extension in the VM settings. Note that without VT-x you have "
289	"to reduce the number of guest CPUs to one");
290	#else
291	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
292	"extension. Either upgrade your kernel or disable the VT-x extension in the "
293	"VM settings. Note that without VT-x you have to reduce the number of guest "
294	"CPUs to one");
295	#endif
296	break;
297
298	case VERR_PDM_DEVICE_NOT_FOUND:
299	pszError = N_("A virtual device is configured in the VM settings but the device "
300	"implementation is missing.\n"
301	"A possible reason for this error is a missing extension pack. Note "
302	"that as of VirtualBox 4.0, certain features (for example USB 2.0 "
303	"support and remote desktop) are only available from an 'extension "
304	"pack' which must be downloaded and installed separately");
305	break;
306
307	case VERR_PCI_PASSTHROUGH_NO_HM:
308	pszError = N_("PCI passthrough requires VT-x/AMD-V");
309	break;
310
311	case VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING:
312	pszError = N_("PCI passthrough requires nested paging");
313	break;
314
315	default:
316	if (VMR3GetErrorCount(pUVM) == 0)
317	{
318	pszError = (char *)alloca(1024);
319	RTErrQueryMsgFull(rc, (char )pszError, 1024, false /fFailIfUnknown*/);
320	}
321	else
322	pszError = NULL; /* already set. */
323	break;
324	}
325	if (pszError)
326	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
327	}
328	else
329	{
330	/*
331	* An error occurred at support library initialization time (before the
332	* VM could be created). Set the error message directly using the
333	* initial callback, as the callback list doesn't exist yet.
334	*/
335	const char *pszError;
336	switch (rc)
337	{
338	case VERR_VM_DRIVER_LOAD_ERROR:
339	#ifdef RT_OS_LINUX
340	pszError = N_("VirtualBox kernel driver not loaded. The vboxdrv kernel module "
341	"was either not loaded, /dev/vboxdrv is not set up properly, "
342	"or you are using EFI Secure Boot and the module is not signed "
343	"in the right way for your system. If necessary, try setting up "
344	"the kernel module again by executing "
345	"'/sbin/vboxconfig' as root");
346	#else
347	pszError = N_("VirtualBox kernel driver not loaded");
348	#endif
349	break;
350	case VERR_VM_DRIVER_OPEN_ERROR:
351	pszError = N_("VirtualBox kernel driver cannot be opened");
352	break;
353	case VERR_VM_DRIVER_NOT_ACCESSIBLE:
354	#ifdef VBOX_WITH_HARDENING
355	/* This should only happen if the executable wasn't hardened - bad code/build. */
356	pszError = N_("VirtualBox kernel driver not accessible, permission problem. "
357	"Re-install VirtualBox. If you are building it yourself, you "
358	"should make sure it installed correctly and that the setuid "
359	"bit is set on the executables calling VMR3Create.");
360	#else
361	/* This should only happen when mixing builds or with the usual /dev/vboxdrv access issues. */
362	# if defined(RT_OS_DARWIN)
363	pszError = N_("VirtualBox KEXT is not accessible, permission problem. "
364	"If you have built VirtualBox yourself, make sure that you do not "
365	"have the vboxdrv KEXT from a different build or installation loaded.");
366	# elif defined(RT_OS_LINUX)
367	pszError = N_("VirtualBox kernel driver is not accessible, permission problem. "
368	"If you have built VirtualBox yourself, make sure that you do "
369	"not have the vboxdrv kernel module from a different build or "
370	"installation loaded. Also, make sure the vboxdrv udev rule gives "
371	"you the permission you need to access the device.");
372	# elif defined(RT_OS_WINDOWS)
373	pszError = N_("VirtualBox kernel driver is not accessible, permission problem.");
374	# else /* solaris, freebsd, ++. */
375	pszError = N_("VirtualBox kernel module is not accessible, permission problem. "
376	"If you have built VirtualBox yourself, make sure that you do "
377	"not have the vboxdrv kernel module from a different install loaded.");
378	# endif
379	#endif
380	break;
381	case VERR_INVALID_HANDLE: /** @todo track down and fix this error. */
382	case VERR_VM_DRIVER_NOT_INSTALLED:
383	#ifdef RT_OS_LINUX
384	pszError = N_("VirtualBox kernel driver not Installed. The vboxdrv kernel module "
385	"was either not loaded, /dev/vboxdrv is not set up properly, "
386	"or you are using EFI Secure Boot and the module is not signed "
387	"in the right way for your system. If necessary, try setting up "
388	"the kernel module again by executing "
389	"'/sbin/vboxconfig' as root");
390	#else
391	pszError = N_("VirtualBox kernel driver not installed");
392	#endif
393	break;
394	case VERR_NO_MEMORY:
395	pszError = N_("VirtualBox support library out of memory");
396	break;
397	case VERR_VERSION_MISMATCH:
398	case VERR_VM_DRIVER_VERSION_MISMATCH:
399	pszError = N_("The VirtualBox support driver which is running is from a different "
400	"version of VirtualBox. You can correct this by stopping all "
401	"running instances of VirtualBox and reinstalling the software.");
402	break;
403	default:
404	pszError = N_("Unknown error initializing kernel driver");
405	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
406	}
407	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
408	}
409	}
410
411	/* cleanup */
412	vmR3DestroyUVM(pUVM, 2000);
413	LogFlow(("VMR3Create: returns %Rrc\n", rc));
414	return rc;
415	}
416
417
418	/**
419	* Creates the UVM.
420	*
421	* This will not initialize the support library even if vmR3DestroyUVM
422	* will terminate that.
423	*
424	* @returns VBox status code.
425	* @param cCpus Number of virtual CPUs
426	* @param pVmm2UserMethods Pointer to the optional VMM -> User method
427	* table.
428	* @param ppUVM Where to store the UVM pointer.
429	*/
430	static int vmR3CreateUVM(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, PUVM *ppUVM)
431	{
432	uint32_t i;
433
434	/*
435	* Create and initialize the UVM.
436	*/
437	PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_UOFFSETOF_DYN(UVM, aCpus[cCpus]));
438	AssertReturn(pUVM, VERR_NO_MEMORY);
439	pUVM->u32Magic = UVM_MAGIC;
440	pUVM->cCpus = cCpus;
441	pUVM->pVmm2UserMethods = pVmm2UserMethods;
442
443	AssertCompile(sizeof(pUVM->vm.s) <= sizeof(pUVM->vm.padding));
444
445	pUVM->vm.s.cUvmRefs = 1;
446	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
447	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
448	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
449
450	pUVM->vm.s.enmHaltMethod = VMHALTMETHOD_BOOTSTRAP;
451	RTUuidClear(&pUVM->vm.s.Uuid);
452
453	/* Initialize the VMCPU array in the UVM. */
454	for (i = 0; i < cCpus; i++)
455	{
456	pUVM->aCpus[i].pUVM = pUVM;
457	pUVM->aCpus[i].idCpu = i;
458	}
459
460	/* Allocate a TLS entry to store the VMINTUSERPERVMCPU pointer. */
461	int rc = RTTlsAllocEx(&pUVM->vm.s.idxTLS, NULL);
462	AssertRC(rc);
463	if (RT_SUCCESS(rc))
464	{
465	/* Allocate a halt method event semaphore for each VCPU. */
466	for (i = 0; i < cCpus; i++)
467	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
468	for (i = 0; i < cCpus; i++)
469	{
470	rc = RTSemEventCreate(&pUVM->aCpus[i].vm.s.EventSemWait);
471	if (RT_FAILURE(rc))
472	break;
473	}
474	if (RT_SUCCESS(rc))
475	{
476	rc = RTCritSectInit(&pUVM->vm.s.AtStateCritSect);
477	if (RT_SUCCESS(rc))
478	{
479	rc = RTCritSectInit(&pUVM->vm.s.AtErrorCritSect);
480	if (RT_SUCCESS(rc))
481	{
482	/*
483	* Init fundamental (sub-)components - STAM, MMR3Heap and PDMLdr.
484	*/
485	rc = PDMR3InitUVM(pUVM);
486	if (RT_SUCCESS(rc))
487	{
488	rc = STAMR3InitUVM(pUVM);
489	if (RT_SUCCESS(rc))
490	{
491	rc = MMR3InitUVM(pUVM);
492	if (RT_SUCCESS(rc))
493	{
494	/*
495	* Start the emulation threads for all VMCPUs.
496	*/
497	for (i = 0; i < cCpus; i++)
498	{
499	rc = RTThreadCreateF(&pUVM->aCpus[i].vm.s.ThreadEMT, vmR3EmulationThread, &pUVM->aCpus[i],
500	_1M, RTTHREADTYPE_EMULATION,
501	RTTHREADFLAGS_WAITABLE \| RTTHREADFLAGS_COM_MTA \| RTTHREADFLAGS_NO_SIGNALS,
502	cCpus > 1 ? "EMT-%u" : "EMT", i);
503	if (RT_FAILURE(rc))
504	break;
505
506	pUVM->aCpus[i].vm.s.NativeThreadEMT = RTThreadGetNative(pUVM->aCpus[i].vm.s.ThreadEMT);
507	}
508
509	if (RT_SUCCESS(rc))
510	{
511	*ppUVM = pUVM;
512	return VINF_SUCCESS;
513	}
514
515	/* bail out. */
516	while (i-- > 0)
517	{
518	/** @todo rainy day: terminate the EMTs. */
519	}
520	MMR3TermUVM(pUVM);
521	}
522	STAMR3TermUVM(pUVM);
523	}
524	PDMR3TermUVM(pUVM);
525	}
526	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
527	}
528	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
529	}
530	}
531	for (i = 0; i < cCpus; i++)
532	{
533	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
534	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
535	}
536	RTTlsFree(pUVM->vm.s.idxTLS);
537	}
538	RTMemPageFree(pUVM, RT_UOFFSETOF_DYN(UVM, aCpus[pUVM->cCpus]));
539	return rc;
540	}
541
542
543	/**
544	* Creates and initializes the VM.
545	*
546	* @thread EMT
547	*/
548	static DECLCALLBACK(int) vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM)
549	{
550	#if (defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)) && !defined(VBOX_WITH_OLD_CPU_SUPPORT)
551	/*
552	* Require SSE2 to be present (already checked for in supdrv, so we
553	* shouldn't ever really get here).
554	*/
555	if (!(ASMCpuId_EDX(1) & X86_CPUID_FEATURE_EDX_SSE2))
556	{
557	LogRel(("vboxdrv: Requires SSE2 (cpuid(0).EDX=%#x)\n", ASMCpuId_EDX(1)));
558	return VERR_UNSUPPORTED_CPU;
559	}
560	#endif
561
562
563	/*
564	* Load the VMMR0.r0 module so that we can call GVMMR0CreateVM.
565	*/
566	if (!SUPR3IsDriverless())
567	{
568	int rc = PDMR3LdrLoadVMMR0U(pUVM);
569	if (RT_FAILURE(rc))
570	{
571	/** @todo we need a cleaner solution for this (VERR_VMX_IN_VMX_ROOT_MODE).
572	* bird: what about moving the message down here? Main picks the first message, right? */
573	if (rc == VERR_VMX_IN_VMX_ROOT_MODE)
574	return rc; /* proper error message set later on */
575	return vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("Failed to load VMMR0.r0"));
576	}
577	}
578
579	/*
580	* Request GVMM to create a new VM for us.
581	*/
582	RTR0PTR pVMR0;
583	int rc = GVMMR3CreateVM(pUVM, cCpus, pUVM->vm.s.pSession, &pUVM->pVM, &pVMR0);
584	if (RT_SUCCESS(rc))
585	{
586	PVM pVM = pUVM->pVM;
587	AssertRelease(RT_VALID_PTR(pVM));
588	AssertRelease(pVM->pVMR0ForCall == pVMR0);
589	AssertRelease(pVM->pSession == pUVM->vm.s.pSession);
590	AssertRelease(pVM->cCpus == cCpus);
591	AssertRelease(pVM->uCpuExecutionCap == 100);
592	AssertCompileMemberAlignment(VM, cpum, 64);
593	AssertCompileMemberAlignment(VM, tm, 64);
594
595	Log(("VMR3Create: Created pUVM=%p pVM=%p pVMR0=%p hSelf=%#x cCpus=%RU32\n", pUVM, pVM, pVMR0, pVM->hSelf, pVM->cCpus));
596
597	/*
598	* Initialize the VM structure and our internal data (VMINT).
599	*/
600	pVM->pUVM = pUVM;
601
602	for (VMCPUID i = 0; i < pVM->cCpus; i++)
603	{
604	PVMCPU pVCpu = pVM->apCpusR3[i];
605	pVCpu->pUVCpu = &pUVM->aCpus[i];
606	pVCpu->idCpu = i;
607	pVCpu->hNativeThread = pUVM->aCpus[i].vm.s.NativeThreadEMT;
608	pVCpu->hThread = pUVM->aCpus[i].vm.s.ThreadEMT;
609	Assert(pVCpu->hNativeThread != NIL_RTNATIVETHREAD);
610	/* hNativeThreadR0 is initialized on EMT registration. */
611	pUVM->aCpus[i].pVCpu = pVCpu;
612	pUVM->aCpus[i].pVM = pVM;
613	}
614
615	/*
616	* Init the configuration.
617	*/
618	rc = CFGMR3Init(pVM, pfnCFGMConstructor, pvUserCFGM);
619	if (RT_SUCCESS(rc))
620	{
621	rc = vmR3ReadBaseConfig(pVM, pUVM, cCpus);
622	if (RT_SUCCESS(rc))
623	{
624	/*
625	* Init the ring-3 components and ring-3 per cpu data, finishing it off
626	* by a relocation round (intermediate context finalization will do this).
627	*/
628	rc = vmR3InitRing3(pVM, pUVM);
629	if (RT_SUCCESS(rc))
630	{
631	LogFlow(("Ring-3 init succeeded\n"));
632
633	/*
634	* Init the Ring-0 components.
635	*/
636	rc = vmR3InitRing0(pVM);
637	if (RT_SUCCESS(rc))
638	{
639	/* Relocate again, because some switcher fixups depends on R0 init results. */
640	VMR3Relocate(pVM, 0 /* offDelta */);
641
642	#ifdef VBOX_WITH_DEBUGGER
643	/*
644	* Init the tcp debugger console if we're building
645	* with debugger support.
646	*/
647	void *pvUser = NULL;
648	rc = DBGCIoCreate(pUVM, &pvUser);
649	if ( RT_SUCCESS(rc)
650	\|\| rc == VERR_NET_ADDRESS_IN_USE)
651	{
652	pUVM->vm.s.pvDBGC = pvUser;
653	#endif
654	/*
655	* Now we can safely set the VM halt method to default.
656	*/
657	rc = vmR3SetHaltMethodU(pUVM, VMHALTMETHOD_DEFAULT);
658	if (RT_SUCCESS(rc))
659	{
660	/*
661	* Set the state and we're done.
662	*/
663	vmR3SetState(pVM, VMSTATE_CREATED, VMSTATE_CREATING);
664	return VINF_SUCCESS;
665	}
666	#ifdef VBOX_WITH_DEBUGGER
667	DBGCIoTerminate(pUVM, pUVM->vm.s.pvDBGC);
668	pUVM->vm.s.pvDBGC = NULL;
669	}
670	#endif
671	//..
672	}
673	vmR3Destroy(pVM);
674	}
675	}
676	//..
677
678	/* Clean CFGM. */
679	int rc2 = CFGMR3Term(pVM);
680	AssertRC(rc2);
681	}
682
683	/*
684	* Do automatic cleanups while the VM structure is still alive and all
685	* references to it are still working.
686	*/
687	PDMR3CritSectBothTerm(pVM);
688
689	/*
690	* Drop all references to VM and the VMCPU structures, then
691	* tell GVMM to destroy the VM.
692	*/
693	pUVM->pVM = NULL;
694	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
695	{
696	pUVM->aCpus[i].pVM = NULL;
697	pUVM->aCpus[i].pVCpu = NULL;
698	}
699	Assert(pUVM->vm.s.enmHaltMethod == VMHALTMETHOD_BOOTSTRAP);
700
701	if (pUVM->cCpus > 1)
702	{
703	/* Poke the other EMTs since they may have stale pVM and pVCpu references
704	on the stack (see VMR3WaitU for instance) if they've been awakened after
705	VM creation. */
706	for (VMCPUID i = 1; i < pUVM->cCpus; i++)
707	VMR3NotifyCpuFFU(&pUVM->aCpus[i], 0);
708	RTThreadSleep(RT_MIN(100 + 25 (pUVM->cCpus - 1), 500)); / very sophisticated */
709	}
710
711	int rc2 = GVMMR3DestroyVM(pUVM, pVM);
712	AssertRC(rc2);
713	}
714	else
715	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("VM creation failed (GVMM)"));
716
717	LogFlow(("vmR3CreateU: returns %Rrc\n", rc));
718	return rc;
719	}
720
721
722	/**
723	* Reads the base configuation from CFGM.
724	*
725	* @returns VBox status code.
726	* @param pVM The cross context VM structure.
727	* @param pUVM The user mode VM structure.
728	* @param cCpus The CPU count given to VMR3Create.
729	*/
730	static int vmR3ReadBaseConfig(PVM pVM, PUVM pUVM, uint32_t cCpus)
731	{
732	PCFGMNODE const pRoot = CFGMR3GetRoot(pVM);
733
734	/*
735	* Base EM and HM config properties.
736	*/
737	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
738	pVM->fHMEnabled = true;
739	#else /* Other architectures must fall back on IEM for the time being: */
740	pVM->fHMEnabled = false;
741	#endif
742
743	/*
744	* Make sure the CPU count in the config data matches.
745	*/
746	uint32_t cCPUsCfg;
747	int rc = CFGMR3QueryU32Def(pRoot, "NumCPUs", &cCPUsCfg, 1);
748	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"NumCPUs\" as integer failed, rc=%Rrc\n", rc), rc);
749	AssertLogRelMsgReturn(cCPUsCfg == cCpus,
750	("Configuration error: \"NumCPUs\"=%RU32 and VMR3Create::cCpus=%RU32 does not match!\n",
751	cCPUsCfg, cCpus),
752	VERR_INVALID_PARAMETER);
753
754	/*
755	* Get the CPU execution cap.
756	*/
757	rc = CFGMR3QueryU32Def(pRoot, "CpuExecutionCap", &pVM->uCpuExecutionCap, 100);
758	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"CpuExecutionCap\" as integer failed, rc=%Rrc\n", rc), rc);
759
760	/*
761	* Get the VM name and UUID.
762	*/
763	rc = CFGMR3QueryStringAllocDef(pRoot, "Name", &pUVM->vm.s.pszName, "<unknown>");
764	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"Name\" failed, rc=%Rrc\n", rc), rc);
765
766	rc = CFGMR3QueryBytes(pRoot, "UUID", &pUVM->vm.s.Uuid, sizeof(pUVM->vm.s.Uuid));
767	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
768	rc = VINF_SUCCESS;
769	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"UUID\" failed, rc=%Rrc\n", rc), rc);
770
771	rc = CFGMR3QueryBoolDef(pRoot, "PowerOffInsteadOfReset", &pVM->vm.s.fPowerOffInsteadOfReset, false);
772	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"PowerOffInsteadOfReset\" failed, rc=%Rrc\n", rc), rc);
773
774	return VINF_SUCCESS;
775	}
776
777
778	/**
779	* Initializes all R3 components of the VM
780	*/
781	static int vmR3InitRing3(PVM pVM, PUVM pUVM)
782	{
783	int rc;
784
785	/*
786	* Register the other EMTs with GVM.
787	*/
788	for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++)
789	{
790	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)GVMMR3RegisterVCpu, 2, pVM, idCpu);
791	if (RT_FAILURE(rc))
792	return rc;
793	}
794
795	/*
796	* Register statistics.
797	*/
798	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
799	{
800	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);
801	AssertRC(rc);
802	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);
803	AssertRC(rc);
804	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);
805	AssertRC(rc);
806	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);
807	AssertRC(rc);
808	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);
809	AssertRC(rc);
810	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);
811	AssertRC(rc);
812	}
813
814	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocNew, STAMTYPE_COUNTER, "/VM/Req/AllocNew", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a new packet.");
815	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRaces, STAMTYPE_COUNTER, "/VM/Req/AllocRaces", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc causing races.");
816	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRecycled, STAMTYPE_COUNTER, "/VM/Req/AllocRecycled", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a recycled packet.");
817	STAM_REG(pVM, &pUVM->vm.s.StatReqFree, STAMTYPE_COUNTER, "/VM/Req/Free", STAMUNIT_OCCURENCES, "Number of VMR3ReqFree calls.");
818	STAM_REG(pVM, &pUVM->vm.s.StatReqFreeOverflow, STAMTYPE_COUNTER, "/VM/Req/FreeOverflow", STAMUNIT_OCCURENCES, "Number of times the request was actually freed.");
819	STAM_REG(pVM, &pUVM->vm.s.StatReqProcessed, STAMTYPE_COUNTER, "/VM/Req/Processed", STAMUNIT_OCCURENCES, "Number of processed requests (any queue).");
820	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.");
821	STAM_REG(pVM, &pUVM->vm.s.StatReqPushBackRaces, STAMTYPE_COUNTER, "/VM/Req/PushBackRaces", STAMUNIT_OCCURENCES, "Number of push back races.");
822
823	/* Statistics for ring-0 components: */
824	STAM_REL_REG(pVM, &pVM->R0Stats.gmm.cChunkTlbHits, STAMTYPE_COUNTER, "/GMM/ChunkTlbHits", STAMUNIT_OCCURENCES, "GMMR0PageIdToVirt chunk TBL hits");
825	STAM_REL_REG(pVM, &pVM->R0Stats.gmm.cChunkTlbMisses, STAMTYPE_COUNTER, "/GMM/ChunkTlbMisses", STAMUNIT_OCCURENCES, "GMMR0PageIdToVirt chunk TBL misses");
826
827	/*
828	* Init all R3 components, the order here might be important.
829	* NEM and HM shall be initialized first!
830	*/
831	Assert(pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NOT_SET);
832	rc = NEMR3InitConfig(pVM);
833	if (RT_SUCCESS(rc))
834	rc = HMR3Init(pVM);
835	if (RT_SUCCESS(rc))
836	{
837	ASMCompilerBarrier(); /* HMR3Init will have modified const member bMainExecutionEngine. */
838	Assert( pVM->bMainExecutionEngine == VM_EXEC_ENGINE_HW_VIRT
839	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API
840	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_IEM);
841	rc = MMR3Init(pVM);
842	if (RT_SUCCESS(rc))
843	{
844	rc = CPUMR3Init(pVM);
845	if (RT_SUCCESS(rc))
846	{
847	rc = NEMR3InitAfterCPUM(pVM);
848	if (RT_SUCCESS(rc))
849	rc = PGMR3Init(pVM);
850	if (RT_SUCCESS(rc))
851	{
852	rc = MMR3InitPaging(pVM);
853	if (RT_SUCCESS(rc))
854	rc = TMR3Init(pVM);
855	if (RT_SUCCESS(rc))
856	{
857	rc = VMMR3Init(pVM);
858	if (RT_SUCCESS(rc))
859	{
860	rc = SELMR3Init(pVM);
861	if (RT_SUCCESS(rc))
862	{
863	rc = TRPMR3Init(pVM);
864	if (RT_SUCCESS(rc))
865	{
866	rc = SSMR3RegisterStub(pVM, "CSAM", 0);
867	if (RT_SUCCESS(rc))
868	{
869	rc = SSMR3RegisterStub(pVM, "PATM", 0);
870	if (RT_SUCCESS(rc))
871	{
872	rc = IOMR3Init(pVM);
873	if (RT_SUCCESS(rc))
874	{
875	rc = EMR3Init(pVM);
876	if (RT_SUCCESS(rc))
877	{
878	rc = IEMR3Init(pVM);
879	if (RT_SUCCESS(rc))
880	{
881	rc = DBGFR3Init(pVM);
882	if (RT_SUCCESS(rc))
883	{
884	/* GIM must be init'd before PDM, gimdevR3Construct()
885	requires GIM provider to be setup. */
886	rc = GIMR3Init(pVM);
887	if (RT_SUCCESS(rc))
888	{
889	rc = GCMR3Init(pVM);
890	if (RT_SUCCESS(rc))
891	{
892	rc = PDMR3Init(pVM);
893	if (RT_SUCCESS(rc))
894	{
895	rc = PGMR3InitFinalize(pVM);
896	if (RT_SUCCESS(rc))
897	rc = TMR3InitFinalize(pVM);
898	if (RT_SUCCESS(rc))
899	{
900	PGMR3MemSetup(pVM, false /fAtReset/);
901	PDMR3MemSetup(pVM, false /fAtReset/);
902	}
903	if (RT_SUCCESS(rc))
904	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING3);
905	if (RT_SUCCESS(rc))
906	{
907	LogFlow(("vmR3InitRing3: returns %Rrc\n", VINF_SUCCESS));
908	return VINF_SUCCESS;
909	}
910
911	int rc2 = PDMR3Term(pVM);
912	AssertRC(rc2);
913	}
914	int rc2 = GCMR3Term(pVM);
915	AssertRC(rc2);
916	}
917	int rc2 = GIMR3Term(pVM);
918	AssertRC(rc2);
919	}
920	int rc2 = DBGFR3Term(pVM);
921	AssertRC(rc2);
922	}
923	int rc2 = IEMR3Term(pVM);
924	AssertRC(rc2);
925	}
926	int rc2 = EMR3Term(pVM);
927	AssertRC(rc2);
928	}
929	int rc2 = IOMR3Term(pVM);
930	AssertRC(rc2);
931	}
932	}
933	}
934	int rc2 = TRPMR3Term(pVM);
935	AssertRC(rc2);
936	}
937	int rc2 = SELMR3Term(pVM);
938	AssertRC(rc2);
939	}
940	int rc2 = VMMR3Term(pVM);
941	AssertRC(rc2);
942	}
943	int rc2 = TMR3Term(pVM);
944	AssertRC(rc2);
945	}
946	int rc2 = PGMR3Term(pVM);
947	AssertRC(rc2);
948	}
949	//int rc2 = CPUMR3Term(pVM);
950	//AssertRC(rc2);
951	}
952	/* MMR3Term is not called here because it'll kill the heap. */
953	}
954	int rc2 = HMR3Term(pVM);
955	AssertRC(rc2);
956	}
957	NEMR3Term(pVM);
958
959	LogFlow(("vmR3InitRing3: returns %Rrc\n", rc));
960	return rc;
961	}
962
963
964	/**
965	* Initializes all R0 components of the VM.
966	*/
967	static int vmR3InitRing0(PVM pVM)
968	{
969	LogFlow(("vmR3InitRing0:\n"));
970
971	/*
972	* Check for FAKE suplib mode.
973	*/
974	int rc = VINF_SUCCESS;
975	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
976	if (!psz \|\| strcmp(psz, "fake"))
977	{
978	/*
979	* Call the VMMR0 component and let it do the init.
980	*/
981	rc = VMMR3InitR0(pVM);
982	}
983	else
984	Log(("vmR3InitRing0: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
985
986	/*
987	* Do notifications and return.
988	*/
989	if (RT_SUCCESS(rc))
990	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING0);
991	if (RT_SUCCESS(rc))
992	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_HM);
993
994	LogFlow(("vmR3InitRing0: returns %Rrc\n", rc));
995	return rc;
996	}
997
998
999	/**
1000	* Do init completed notifications.
1001	*
1002	* @returns VBox status code.
1003	* @param pVM The cross context VM structure.
1004	* @param enmWhat What's completed.
1005	*/
1006	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
1007	{
1008	int rc = VMMR3InitCompleted(pVM, enmWhat);
1009	if (RT_SUCCESS(rc))
1010	rc = HMR3InitCompleted(pVM, enmWhat);
1011	if (RT_SUCCESS(rc))
1012	rc = NEMR3InitCompleted(pVM, enmWhat);
1013	if (RT_SUCCESS(rc))
1014	rc = PGMR3InitCompleted(pVM, enmWhat);
1015	if (RT_SUCCESS(rc))
1016	rc = CPUMR3InitCompleted(pVM, enmWhat);
1017	if (RT_SUCCESS(rc))
1018	rc = EMR3InitCompleted(pVM, enmWhat);
1019	if (enmWhat == VMINITCOMPLETED_RING3)
1020	{
1021	if (RT_SUCCESS(rc))
1022	rc = SSMR3RegisterStub(pVM, "rem", 1);
1023	}
1024	if (RT_SUCCESS(rc))
1025	rc = PDMR3InitCompleted(pVM, enmWhat);
1026
1027	/* IOM must come after PDM, as device (DevPcArch) may register some final
1028	handlers in their init completion method. */
1029	if (RT_SUCCESS(rc))
1030	rc = IOMR3InitCompleted(pVM, enmWhat);
1031	return rc;
1032	}
1033
1034
1035	/**
1036	* Calls the relocation functions for all VMM components so they can update
1037	* any GC pointers. When this function is called all the basic VM members
1038	* have been updated and the actual memory relocation have been done
1039	* by the PGM/MM.
1040	*
1041	* This is used both on init and on runtime relocations.
1042	*
1043	* @param pVM The cross context VM structure.
1044	* @param offDelta Relocation delta relative to old location.
1045	*/
1046	VMMR3_INT_DECL(void) VMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1047	{
1048	LogFlow(("VMR3Relocate: offDelta=%RGv\n", offDelta));
1049
1050	/*
1051	* The order here is very important!
1052	*/
1053	PGMR3Relocate(pVM, offDelta);
1054	PDMR3LdrRelocateU(pVM->pUVM, offDelta);
1055	PGMR3Relocate(pVM, 0); /* Repeat after PDM relocation. */
1056	CPUMR3Relocate(pVM);
1057	HMR3Relocate(pVM);
1058	SELMR3Relocate(pVM);
1059	VMMR3Relocate(pVM, offDelta);
1060	SELMR3Relocate(pVM); /* !hack! fix stack! */
1061	TRPMR3Relocate(pVM, offDelta);
1062	IOMR3Relocate(pVM, offDelta);
1063	EMR3Relocate(pVM);
1064	TMR3Relocate(pVM, offDelta);
1065	IEMR3Relocate(pVM);
1066	DBGFR3Relocate(pVM, offDelta);
1067	PDMR3Relocate(pVM, offDelta);
1068	GIMR3Relocate(pVM, offDelta);
1069	GCMR3Relocate(pVM, offDelta);
1070	}
1071
1072
1073	/**
1074	* EMT rendezvous worker for VMR3PowerOn.
1075	*
1076	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
1077	* code, see FNVMMEMTRENDEZVOUS.)
1078	*
1079	* @param pVM The cross context VM structure.
1080	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1081	* @param pvUser Ignored.
1082	*/
1083	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser)
1084	{
1085	LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1086	Assert(!pvUser); NOREF(pvUser);
1087
1088	/*
1089	* The first thread thru here tries to change the state. We shouldn't be
1090	* called again if this fails.
1091	*/
1092	if (pVCpu->idCpu == pVM->cCpus - 1)
1093	{
1094	int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED);
1095	if (RT_FAILURE(rc))
1096	return rc;
1097	}
1098
1099	VMSTATE enmVMState = VMR3GetState(pVM);
1100	AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON,
1101	("%s\n", VMR3GetStateName(enmVMState)),
1102	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1103
1104	/*
1105	* All EMTs changes their state to started.
1106	*/
1107	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1108
1109	/*
1110	* EMT(0) is last thru here and it will make the notification calls
1111	* and advance the state.
1112	*/
1113	if (pVCpu->idCpu == 0)
1114	{
1115	PDMR3PowerOn(pVM);
1116	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON);
1117	}
1118
1119	return VINF_SUCCESS;
1120	}
1121
1122
1123	/**
1124	* Powers on the virtual machine.
1125	*
1126	* @returns VBox status code.
1127	*
1128	* @param pUVM The VM to power on.
1129	*
1130	* @thread Any thread.
1131	* @vmstate Created
1132	* @vmstateto PoweringOn+Running
1133	*/
1134	VMMR3DECL(int) VMR3PowerOn(PUVM pUVM)
1135	{
1136	LogFlow(("VMR3PowerOn: pUVM=%p\n", pUVM));
1137	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1138	PVM pVM = pUVM->pVM;
1139	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1140
1141	/*
1142	* Gather all the EMTs to reduce the init TSC drift and keep
1143	* the state changing APIs a bit uniform.
1144	*/
1145	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1146	vmR3PowerOn, NULL);
1147	LogFlow(("VMR3PowerOn: returns %Rrc\n", rc));
1148	return rc;
1149	}
1150
1151
1152	/**
1153	* Does the suspend notifications.
1154	*
1155	* @param pVM The cross context VM structure.
1156	* @thread EMT(0)
1157	*/
1158	static void vmR3SuspendDoWork(PVM pVM)
1159	{
1160	PDMR3Suspend(pVM);
1161	}
1162
1163
1164	/**
1165	* EMT rendezvous worker for VMR3Suspend.
1166	*
1167	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
1168	* return code, see FNVMMEMTRENDEZVOUS.)
1169	*
1170	* @param pVM The cross context VM structure.
1171	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1172	* @param pvUser Ignored.
1173	*/
1174	static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1175	{
1176	VMSUSPENDREASON enmReason = (VMSUSPENDREASON)(uintptr_t)pvUser;
1177	LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1178
1179	/*
1180	* The first EMT switches the state to suspending. If this fails because
1181	* something was racing us in one way or the other, there will be no more
1182	* calls and thus the state assertion below is not going to annoy anyone.
1183	*
1184	* Note! Changes to the state transition here needs to be reflected in the
1185	* checks in vmR3SetRuntimeErrorCommon!
1186	*/
1187	if (pVCpu->idCpu == pVM->cCpus - 1)
1188	{
1189	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1190	VMSTATE_SUSPENDING, VMSTATE_RUNNING,
1191	VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS);
1192	if (RT_FAILURE(rc))
1193	return rc;
1194	pVM->pUVM->vm.s.enmSuspendReason = enmReason;
1195	}
1196
1197	VMSTATE enmVMState = VMR3GetState(pVM);
1198	AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING
1199	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS,
1200	("%s\n", VMR3GetStateName(enmVMState)),
1201	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1202
1203	/*
1204	* EMT(0) does the actually suspending after all the other CPUs have
1205	* been thru here.
1206	*/
1207	if (pVCpu->idCpu == 0)
1208	{
1209	vmR3SuspendDoWork(pVM);
1210
1211	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1212	VMSTATE_SUSPENDED, VMSTATE_SUSPENDING,
1213	VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS);
1214	if (RT_FAILURE(rc))
1215	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1216	}
1217
1218	return VINF_EM_SUSPEND;
1219	}
1220
1221
1222	/**
1223	* Suspends a running VM.
1224	*
1225	* @returns VBox status code. When called on EMT, this will be a strict status
1226	* code that has to be propagated up the call stack.
1227	*
1228	* @param pUVM The VM to suspend.
1229	* @param enmReason The reason for suspending.
1230	*
1231	* @thread Any thread.
1232	* @vmstate Running or RunningLS
1233	* @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS
1234	*/
1235	VMMR3DECL(int) VMR3Suspend(PUVM pUVM, VMSUSPENDREASON enmReason)
1236	{
1237	LogFlow(("VMR3Suspend: pUVM=%p\n", pUVM));
1238	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1239	AssertReturn(enmReason > VMSUSPENDREASON_INVALID && enmReason < VMSUSPENDREASON_END, VERR_INVALID_PARAMETER);
1240
1241	/*
1242	* Gather all the EMTs to make sure there are no races before
1243	* changing the VM state.
1244	*/
1245	int rc = VMMR3EmtRendezvous(pUVM->pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1246	vmR3Suspend, (void *)(uintptr_t)enmReason);
1247	LogFlow(("VMR3Suspend: returns %Rrc\n", rc));
1248	return rc;
1249	}
1250
1251
1252	/**
1253	* Retrieves the reason for the most recent suspend.
1254	*
1255	* @returns Suspend reason. VMSUSPENDREASON_INVALID if no suspend has been done
1256	* or the handle is invalid.
1257	* @param pUVM The user mode VM handle.
1258	*/
1259	VMMR3DECL(VMSUSPENDREASON) VMR3GetSuspendReason(PUVM pUVM)
1260	{
1261	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSUSPENDREASON_INVALID);
1262	return pUVM->vm.s.enmSuspendReason;
1263	}
1264
1265
1266	/**
1267	* EMT rendezvous worker for VMR3Resume.
1268	*
1269	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1270	* return code, see FNVMMEMTRENDEZVOUS.)
1271	*
1272	* @param pVM The cross context VM structure.
1273	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1274	* @param pvUser Reason.
1275	*/
1276	static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser)
1277	{
1278	VMRESUMEREASON enmReason = (VMRESUMEREASON)(uintptr_t)pvUser;
1279	LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1280
1281	/*
1282	* The first thread thru here tries to change the state. We shouldn't be
1283	* called again if this fails.
1284	*/
1285	if (pVCpu->idCpu == pVM->cCpus - 1)
1286	{
1287	int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED);
1288	if (RT_FAILURE(rc))
1289	return rc;
1290	pVM->pUVM->vm.s.enmResumeReason = enmReason;
1291	}
1292
1293	VMSTATE enmVMState = VMR3GetState(pVM);
1294	AssertMsgReturn(enmVMState == VMSTATE_RESUMING,
1295	("%s\n", VMR3GetStateName(enmVMState)),
1296	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1297
1298	#if 0
1299	/*
1300	* All EMTs changes their state to started.
1301	*/
1302	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1303	#endif
1304
1305	/*
1306	* EMT(0) is last thru here and it will make the notification calls
1307	* and advance the state.
1308	*/
1309	if (pVCpu->idCpu == 0)
1310	{
1311	PDMR3Resume(pVM);
1312	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING);
1313	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1314	}
1315
1316	return VINF_EM_RESUME;
1317	}
1318
1319
1320	/**
1321	* Resume VM execution.
1322	*
1323	* @returns VBox status code. When called on EMT, this will be a strict status
1324	* code that has to be propagated up the call stack.
1325	*
1326	* @param pUVM The user mode VM handle.
1327	* @param enmReason The reason we're resuming.
1328	*
1329	* @thread Any thread.
1330	* @vmstate Suspended
1331	* @vmstateto Running
1332	*/
1333	VMMR3DECL(int) VMR3Resume(PUVM pUVM, VMRESUMEREASON enmReason)
1334	{
1335	LogFlow(("VMR3Resume: pUVM=%p\n", pUVM));
1336	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1337	PVM pVM = pUVM->pVM;
1338	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1339	AssertReturn(enmReason > VMRESUMEREASON_INVALID && enmReason < VMRESUMEREASON_END, VERR_INVALID_PARAMETER);
1340
1341	/*
1342	* Gather all the EMTs to make sure there are no races before
1343	* changing the VM state.
1344	*/
1345	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1346	vmR3Resume, (void *)(uintptr_t)enmReason);
1347	LogFlow(("VMR3Resume: returns %Rrc\n", rc));
1348	return rc;
1349	}
1350
1351
1352	/**
1353	* Retrieves the reason for the most recent resume.
1354	*
1355	* @returns Resume reason. VMRESUMEREASON_INVALID if no suspend has been
1356	* done or the handle is invalid.
1357	* @param pUVM The user mode VM handle.
1358	*/
1359	VMMR3DECL(VMRESUMEREASON) VMR3GetResumeReason(PUVM pUVM)
1360	{
1361	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMRESUMEREASON_INVALID);
1362	return pUVM->vm.s.enmResumeReason;
1363	}
1364
1365
1366	/**
1367	* EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM
1368	* after the live step has been completed.
1369	*
1370	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1371	* return code, see FNVMMEMTRENDEZVOUS.)
1372	*
1373	* @param pVM The cross context VM structure.
1374	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1375	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1376	*/
1377	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1378	{
1379	LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1380	bool pfSuspended = (bool )pvUser;
1381
1382	/*
1383	* The first thread thru here tries to change the state. We shouldn't be
1384	* called again if this fails.
1385	*/
1386	if (pVCpu->idCpu == pVM->cCpus - 1U)
1387	{
1388	PUVM pUVM = pVM->pUVM;
1389	int rc;
1390
1391	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
1392	VMSTATE enmVMState = pVM->enmVMState;
1393	switch (enmVMState)
1394	{
1395	case VMSTATE_RUNNING_LS:
1396	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS, false /fSetRatherThanClearFF/);
1397	rc = VINF_SUCCESS;
1398	break;
1399
1400	case VMSTATE_SUSPENDED_EXT_LS:
1401	case VMSTATE_SUSPENDED_LS: /* (via reset) */
1402	rc = VINF_SUCCESS;
1403	break;
1404
1405	case VMSTATE_DEBUGGING_LS:
1406	rc = VERR_TRY_AGAIN;
1407	break;
1408
1409	case VMSTATE_OFF_LS:
1410	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS, false /fSetRatherThanClearFF/);
1411	rc = VERR_SSM_LIVE_POWERED_OFF;
1412	break;
1413
1414	case VMSTATE_FATAL_ERROR_LS:
1415	vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, false /fSetRatherThanClearFF/);
1416	rc = VERR_SSM_LIVE_FATAL_ERROR;
1417	break;
1418
1419	case VMSTATE_GURU_MEDITATION_LS:
1420	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, false /fSetRatherThanClearFF/);
1421	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1422	break;
1423
1424	case VMSTATE_POWERING_OFF_LS:
1425	case VMSTATE_SUSPENDING_EXT_LS:
1426	case VMSTATE_RESETTING_LS:
1427	default:
1428	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
1429	rc = VERR_VM_UNEXPECTED_VM_STATE;
1430	break;
1431	}
1432	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
1433	if (RT_FAILURE(rc))
1434	{
1435	LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState)));
1436	return rc;
1437	}
1438	}
1439
1440	VMSTATE enmVMState = VMR3GetState(pVM);
1441	AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS,
1442	("%s\n", VMR3GetStateName(enmVMState)),
1443	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1444
1445	/*
1446	* Only EMT(0) have work to do since it's last thru here.
1447	*/
1448	if (pVCpu->idCpu == 0)
1449	{
1450	vmR3SuspendDoWork(pVM);
1451	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1,
1452	VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
1453	if (RT_FAILURE(rc))
1454	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1455
1456	*pfSuspended = true;
1457	}
1458
1459	return VINF_EM_SUSPEND;
1460	}
1461
1462
1463	/**
1464	* EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a
1465	* SSMR3LiveDoStep1 failure.
1466	*
1467	* Doing this as a rendezvous operation avoids all annoying transition
1468	* states.
1469	*
1470	* @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_*
1471	* status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
1472	*
1473	* @param pVM The cross context VM structure.
1474	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1475	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1476	*/
1477	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser)
1478	{
1479	LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1480	bool pfSuspended = (bool )pvUser;
1481	NOREF(pVCpu);
1482
1483	int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 8,
1484	VMSTATE_OFF, VMSTATE_OFF_LS, /* 1 */
1485	VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, /* 2 */
1486	VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, /* 3 */
1487	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_LS, /* 4 */
1488	VMSTATE_SUSPENDED, VMSTATE_SAVING,
1489	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS,
1490	VMSTATE_RUNNING, VMSTATE_RUNNING_LS,
1491	VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS);
1492	if (rc == 1)
1493	rc = VERR_SSM_LIVE_POWERED_OFF;
1494	else if (rc == 2)
1495	rc = VERR_SSM_LIVE_FATAL_ERROR;
1496	else if (rc == 3)
1497	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1498	else if (rc == 4)
1499	{
1500	*pfSuspended = true;
1501	rc = VINF_SUCCESS;
1502	}
1503	else if (rc > 0)
1504	rc = VINF_SUCCESS;
1505	return rc;
1506	}
1507
1508
1509	/**
1510	* EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save.
1511	*
1512	* @returns VBox status code.
1513	* @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called.
1514	*
1515	* @param pVM The cross context VM structure.
1516	* @param pSSM The handle of saved state operation.
1517	*
1518	* @thread EMT(0)
1519	*/
1520	static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM)
1521	{
1522	LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM));
1523	VM_ASSERT_EMT0(pVM);
1524
1525	/*
1526	* Advance the state and mark if VMR3Suspend was called.
1527	*/
1528	int rc = VINF_SUCCESS;
1529	VMSTATE enmVMState = VMR3GetState(pVM);
1530	if (enmVMState == VMSTATE_SUSPENDED_LS)
1531	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS);
1532	else
1533	{
1534	if (enmVMState != VMSTATE_SAVING)
1535	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS);
1536	rc = VINF_SSM_LIVE_SUSPENDED;
1537	}
1538
1539	/*
1540	* Finish up and release the handle. Careful with the status codes.
1541	*/
1542	int rc2 = SSMR3LiveDoStep2(pSSM);
1543	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1544	rc = rc2;
1545
1546	rc2 = SSMR3LiveDone(pSSM);
1547	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1548	rc = rc2;
1549
1550	/*
1551	* Advance to the final state and return.
1552	*/
1553	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1554	Assert(rc > VINF_EM_LAST \|\| rc < VINF_EM_FIRST);
1555	return rc;
1556	}
1557
1558
1559	/**
1560	* Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or
1561	* SSMR3LiveSave.
1562	*
1563	* @returns VBox status code.
1564	*
1565	* @param pVM The cross context VM structure.
1566	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1567	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1568	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1569	* @param pvStreamOpsUser The user argument to the stream methods.
1570	* @param enmAfter What to do afterwards.
1571	* @param pfnProgress Progress callback. Optional.
1572	* @param pvProgressUser User argument for the progress callback.
1573	* @param ppSSM Where to return the saved state handle in case of a
1574	* live snapshot scenario.
1575	*
1576	* @thread EMT
1577	*/
1578	static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1579	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, PSSMHANDLE ppSSM)
1580	{
1581	int rc = VINF_SUCCESS;
1582
1583	LogFlow(("vmR3Save: pVM=%p cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p ppSSM=%p\n",
1584	pVM, cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM));
1585
1586	/*
1587	* Validate input.
1588	*/
1589	AssertPtrNull(pszFilename);
1590	AssertPtrNull(pStreamOps);
1591	AssertPtr(pVM);
1592	Assert( enmAfter == SSMAFTER_DESTROY
1593	\|\| enmAfter == SSMAFTER_CONTINUE
1594	\|\| enmAfter == SSMAFTER_TELEPORT);
1595	AssertPtr(ppSSM);
1596	*ppSSM = NULL;
1597
1598	/*
1599	* Change the state and perform/start the saving.
1600	*/
1601	rc = vmR3TrySetState(pVM, "VMR3Save", 2,
1602	VMSTATE_SAVING, VMSTATE_SUSPENDED,
1603	VMSTATE_RUNNING_LS, VMSTATE_RUNNING);
1604	if (rc == 1 && enmAfter != SSMAFTER_TELEPORT)
1605	{
1606	rc = SSMR3Save(pVM, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser);
1607	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1608	}
1609	else if (rc == 2 \|\| enmAfter == SSMAFTER_TELEPORT)
1610	{
1611	if (enmAfter == SSMAFTER_TELEPORT)
1612	pVM->vm.s.fTeleportedAndNotFullyResumedYet = true;
1613	rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1614	enmAfter, pfnProgress, pvProgressUser, ppSSM);
1615	/* (We're not subject to cancellation just yet.) */
1616	}
1617	else
1618	Assert(RT_FAILURE(rc));
1619	return rc;
1620	}
1621
1622
1623	/**
1624	* Common worker for VMR3Save and VMR3Teleport.
1625	*
1626	* @returns VBox status code.
1627	*
1628	* @param pVM The cross context VM structure.
1629	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1630	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1631	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1632	* @param pvStreamOpsUser The user argument to the stream methods.
1633	* @param enmAfter What to do afterwards.
1634	* @param pfnProgress Progress callback. Optional.
1635	* @param pvProgressUser User argument for the progress callback.
1636	* @param pfSuspended Set if we suspended the VM.
1637	*
1638	* @thread Non-EMT
1639	*/
1640	static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime,
1641	const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1642	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1643	{
1644	/*
1645	* Request the operation in EMT(0).
1646	*/
1647	PSSMHANDLE pSSM;
1648	int rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/,
1649	(PFNRT)vmR3Save, 9, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1650	enmAfter, pfnProgress, pvProgressUser, &pSSM);
1651	if ( RT_SUCCESS(rc)
1652	&& pSSM)
1653	{
1654	/*
1655	* Live snapshot.
1656	*
1657	* The state handling here is kind of tricky, doing it on EMT(0) helps
1658	* a bit. See the VMSTATE diagram for details.
1659	*/
1660	rc = SSMR3LiveDoStep1(pSSM);
1661	if (RT_SUCCESS(rc))
1662	{
1663	if (VMR3GetState(pVM) != VMSTATE_SAVING)
1664	for (;;)
1665	{
1666	/* Try suspend the VM. */
1667	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1668	vmR3LiveDoSuspend, pfSuspended);
1669	if (rc != VERR_TRY_AGAIN)
1670	break;
1671
1672	/* Wait for the state to change. */
1673	RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */
1674	}
1675	if (RT_SUCCESS(rc))
1676	rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM);
1677	else
1678	{
1679	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1680	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc)); NOREF(rc2);
1681	}
1682	}
1683	else
1684	{
1685	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1686	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1687
1688	rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, pfSuspended);
1689	if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED)
1690	rc = rc2;
1691	}
1692	}
1693
1694	return rc;
1695	}
1696
1697
1698	/**
1699	* Save current VM state.
1700	*
1701	* Can be used for both saving the state and creating snapshots.
1702	*
1703	* When called for a VM in the Running state, the saved state is created live
1704	* and the VM is only suspended when the final part of the saving is preformed.
1705	* The VM state will not be restored to Running in this case and it's up to the
1706	* caller to call VMR3Resume if this is desirable. (The rational is that the
1707	* caller probably wish to reconfigure the disks before resuming the VM.)
1708	*
1709	* @returns VBox status code.
1710	*
1711	* @param pUVM The VM which state should be saved.
1712	* @param pszFilename The name of the save state file.
1713	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1714	* @param pvStreamOpsUser The user argument to the stream methods.
1715	* @param fContinueAfterwards Whether continue execution afterwards or not.
1716	* When in doubt, set this to true.
1717	* @param pfnProgress Progress callback. Optional.
1718	* @param pvUser User argument for the progress callback.
1719	* @param pfSuspended Set if we suspended the VM.
1720	*
1721	* @thread Non-EMT.
1722	* @vmstate Suspended or Running
1723	* @vmstateto Saving+Suspended or
1724	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1725	*/
1726	VMMR3DECL(int) VMR3Save(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1727	bool fContinueAfterwards, PFNVMPROGRESS pfnProgress, void *pvUser,
1728	bool *pfSuspended)
1729	{
1730	LogFlow(("VMR3Save: pUVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p pfSuspended=%p\n",
1731	pUVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser, pfSuspended));
1732
1733	/*
1734	* Validate input.
1735	*/
1736	AssertPtr(pfSuspended);
1737	*pfSuspended = false;
1738	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1739	PVM pVM = pUVM->pVM;
1740	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1741	VM_ASSERT_OTHER_THREAD(pVM);
1742	AssertReturn(pszFilename \|\| pStreamOps, VERR_INVALID_POINTER);
1743	AssertReturn( (!pStreamOps && *pszFilename)
1744	\|\| pStreamOps,
1745	VERR_INVALID_PARAMETER);
1746	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1747
1748	/*
1749	* Join paths with VMR3Teleport.
1750	*/
1751	SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY;
1752	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
1753	pszFilename, pStreamOps, pvStreamOpsUser,
1754	enmAfter, pfnProgress, pvUser, pfSuspended);
1755	LogFlow(("VMR3Save: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1756	return rc;
1757	}
1758
1759
1760	/**
1761	* Teleport the VM (aka live migration).
1762	*
1763	* @returns VBox status code.
1764	*
1765	* @param pUVM The VM which state should be saved.
1766	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1767	* @param pStreamOps The stream methods.
1768	* @param pvStreamOpsUser The user argument to the stream methods.
1769	* @param pfnProgress Progress callback. Optional.
1770	* @param pvProgressUser User argument for the progress callback.
1771	* @param pfSuspended Set if we suspended the VM.
1772	*
1773	* @thread Non-EMT.
1774	* @vmstate Suspended or Running
1775	* @vmstateto Saving+Suspended or
1776	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1777	*/
1778	VMMR3DECL(int) VMR3Teleport(PUVM pUVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1779	PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1780	{
1781	LogFlow(("VMR3Teleport: pUVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n",
1782	pUVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1783
1784	/*
1785	* Validate input.
1786	*/
1787	AssertPtr(pfSuspended);
1788	*pfSuspended = false;
1789	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1790	PVM pVM = pUVM->pVM;
1791	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1792	VM_ASSERT_OTHER_THREAD(pVM);
1793	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1794	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1795
1796	/*
1797	* Join paths with VMR3Save.
1798	*/
1799	int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime, NULL /pszFilename/, pStreamOps, pvStreamOpsUser,
1800	SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended);
1801	LogFlow(("VMR3Teleport: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1802	return rc;
1803	}
1804
1805
1806
1807	/**
1808	* EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream.
1809	*
1810	* @returns VBox status code.
1811	*
1812	* @param pUVM Pointer to the VM.
1813	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1814	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1815	* @param pvStreamOpsUser The user argument to the stream methods.
1816	* @param pfnProgress Progress callback. Optional.
1817	* @param pvProgressUser User argument for the progress callback.
1818	* @param fTeleporting Indicates whether we're teleporting or not.
1819	*
1820	* @thread EMT.
1821	*/
1822	static DECLCALLBACK(int) vmR3Load(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1823	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1824	{
1825	LogFlow(("vmR3Load: pUVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1826	pUVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1827
1828	/*
1829	* Validate input (paranoia).
1830	*/
1831	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1832	PVM pVM = pUVM->pVM;
1833	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1834	AssertPtrNull(pszFilename);
1835	AssertPtrNull(pStreamOps);
1836	AssertPtrNull(pfnProgress);
1837
1838	/*
1839	* Change the state and perform the load.
1840	*
1841	* Always perform a relocation round afterwards to make sure hypervisor
1842	* selectors and such are correct.
1843	*/
1844	int rc = vmR3TrySetState(pVM, "VMR3Load", 2,
1845	VMSTATE_LOADING, VMSTATE_CREATED,
1846	VMSTATE_LOADING, VMSTATE_SUSPENDED);
1847	if (RT_FAILURE(rc))
1848	return rc;
1849
1850	pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting;
1851
1852	uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pUVM);
1853	rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser);
1854	if (RT_SUCCESS(rc))
1855	{
1856	VMR3Relocate(pVM, 0 /offDelta/);
1857	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING);
1858	}
1859	else
1860	{
1861	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1862	vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING);
1863
1864	if (cErrorsPriorToSave == VMR3GetErrorCount(pUVM))
1865	rc = VMSetError(pVM, rc, RT_SRC_POS,
1866	N_("Unable to restore the virtual machine's saved state from '%s'. "
1867	"It may be damaged or from an older version of VirtualBox. "
1868	"Please discard the saved state before starting the virtual machine"),
1869	pszFilename);
1870	}
1871
1872	return rc;
1873	}
1874
1875
1876	/**
1877	* Loads a VM state into a newly created VM or a one that is suspended.
1878	*
1879	* To restore a saved state on VM startup, call this function and then resume
1880	* the VM instead of powering it on.
1881	*
1882	* @returns VBox status code.
1883	*
1884	* @param pUVM The user mode VM structure.
1885	* @param pszFilename The name of the save state file.
1886	* @param pfnProgress Progress callback. Optional.
1887	* @param pvUser User argument for the progress callback.
1888	*
1889	* @thread Any thread.
1890	* @vmstate Created, Suspended
1891	* @vmstateto Loading+Suspended
1892	*/
1893	VMMR3DECL(int) VMR3LoadFromFile(PUVM pUVM, const char pszFilename, PFNVMPROGRESS pfnProgress, void pvUser)
1894	{
1895	LogFlow(("VMR3LoadFromFile: pUVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n",
1896	pUVM, pszFilename, pszFilename, pfnProgress, pvUser));
1897
1898	/*
1899	* Validate input.
1900	*/
1901	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1902	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1903
1904	/*
1905	* Forward the request to EMT(0). No need to setup a rendezvous here
1906	* since there is no execution taking place when this call is allowed.
1907	*/
1908	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1909	pUVM, pszFilename, (uintptr_t)NULL /pStreamOps/, (uintptr_t)NULL /pvStreamOpsUser/,
1910	pfnProgress, pvUser, false /fTeleporting/);
1911	LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc));
1912	return rc;
1913	}
1914
1915
1916	/**
1917	* VMR3LoadFromFile for arbitrary file streams.
1918	*
1919	* @returns VBox status code.
1920	*
1921	* @param pUVM Pointer to the VM.
1922	* @param pStreamOps The stream methods.
1923	* @param pvStreamOpsUser The user argument to the stream methods.
1924	* @param pfnProgress Progress callback. Optional.
1925	* @param pvProgressUser User argument for the progress callback.
1926	*
1927	* @thread Any thread.
1928	* @vmstate Created, Suspended
1929	* @vmstateto Loading+Suspended
1930	*/
1931	VMMR3DECL(int) VMR3LoadFromStream(PUVM pUVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1932	PFNVMPROGRESS pfnProgress, void *pvProgressUser)
1933	{
1934	LogFlow(("VMR3LoadFromStream: pUVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p\n",
1935	pUVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1936
1937	/*
1938	* Validate input.
1939	*/
1940	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1941	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1942
1943	/*
1944	* Forward the request to EMT(0). No need to setup a rendezvous here
1945	* since there is no execution taking place when this call is allowed.
1946	*/
1947	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1948	pUVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, pfnProgress,
1949	pvProgressUser, true /fTeleporting/);
1950	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
1951	return rc;
1952	}
1953
1954
1955	/**
1956	* EMT rendezvous worker for VMR3PowerOff.
1957	*
1958	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict
1959	* return code, see FNVMMEMTRENDEZVOUS.)
1960	*
1961	* @param pVM The cross context VM structure.
1962	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1963	* @param pvUser Ignored.
1964	*/
1965	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser)
1966	{
1967	LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1968	Assert(!pvUser); NOREF(pvUser);
1969
1970	/*
1971	* The first EMT thru here will change the state to PoweringOff.
1972	*/
1973	if (pVCpu->idCpu == pVM->cCpus - 1)
1974	{
1975	int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 11,
1976	VMSTATE_POWERING_OFF, VMSTATE_RUNNING, /* 1 */
1977	VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, /* 2 */
1978	VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, /* 3 */
1979	VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, /* 4 */
1980	VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, /* 5 */
1981	VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, /* 6 */
1982	VMSTATE_POWERING_OFF, VMSTATE_CREATED, /* 7 / /* @todo update the diagram! */
1983	VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, /* 8 */
1984	VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, /* 9 */
1985	VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS,/* 10 */
1986	VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); /* 11 */
1987	if (RT_FAILURE(rc))
1988	return rc;
1989	if (rc >= 7)
1990	SSMR3Cancel(pVM->pUVM);
1991	}
1992
1993	/*
1994	* Check the state.
1995	*/
1996	VMSTATE enmVMState = VMR3GetState(pVM);
1997	AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF
1998	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
1999	("%s\n", VMR3GetStateName(enmVMState)),
2000	VERR_VM_INVALID_VM_STATE);
2001
2002	/*
2003	* EMT(0) does the actual power off work here after all the other EMTs
2004	* have been thru and entered the STOPPED state.
2005	*/
2006	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED);
2007	if (pVCpu->idCpu == 0)
2008	{
2009	/*
2010	* For debugging purposes, we will log a summary of the guest state at this point.
2011	*/
2012	if (enmVMState != VMSTATE_GURU_MEDITATION)
2013	{
2014	/** @todo make the state dumping at VMR3PowerOff optional. */
2015	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2016	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2017	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2018	RTLogRelPrintf("***\n");
2019	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2020	RTLogRelPrintf("***\n");
2021	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2022	RTLogRelPrintf("***\n");
2023	DBGFR3Info(pVM->pUVM, "activetimers", NULL, DBGFR3InfoLogRelHlp());
2024	RTLogRelPrintf("***\n");
2025	DBGFR3Info(pVM->pUVM, "gdt", NULL, DBGFR3InfoLogRelHlp());
2026	/** @todo dump guest call stack. */
2027	RTLogRelSetBuffering(fOldBuffered);
2028	RTLogRelPrintf("************ End of Guest state at power off *************\n");
2029	}
2030
2031	/*
2032	* Perform the power off notifications and advance the state to
2033	* Off or OffLS.
2034	*/
2035	PDMR3PowerOff(pVM);
2036	DBGFR3PowerOff(pVM);
2037
2038	PUVM pUVM = pVM->pUVM;
2039	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2040	enmVMState = pVM->enmVMState;
2041	if (enmVMState == VMSTATE_POWERING_OFF_LS)
2042	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS, false /fSetRatherThanClearFF/);
2043	else
2044	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF, false /fSetRatherThanClearFF/);
2045	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2046	}
2047	else if (enmVMState != VMSTATE_GURU_MEDITATION)
2048	{
2049	/** @todo make the state dumping at VMR3PowerOff optional. */
2050	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2051	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2052	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2053	RTLogRelPrintf("***\n");
2054	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2055	RTLogRelPrintf("***\n");
2056	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2057	RTLogRelPrintf("***\n");
2058	RTLogRelSetBuffering(fOldBuffered);
2059	RTLogRelPrintf("************ End of Guest state at power off for VCpu %u *************\n", pVCpu->idCpu);
2060	}
2061
2062	return VINF_EM_OFF;
2063	}
2064
2065
2066	/**
2067	* Power off the VM.
2068	*
2069	* @returns VBox status code. When called on EMT, this will be a strict status
2070	* code that has to be propagated up the call stack.
2071	*
2072	* @param pUVM The handle of the VM to be powered off.
2073	*
2074	* @thread Any thread.
2075	* @vmstate Suspended, Running, Guru Meditation, Load Failure
2076	* @vmstateto Off or OffLS
2077	*/
2078	VMMR3DECL(int) VMR3PowerOff(PUVM pUVM)
2079	{
2080	LogFlow(("VMR3PowerOff: pUVM=%p\n", pUVM));
2081	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2082	PVM pVM = pUVM->pVM;
2083	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2084
2085	/*
2086	* Gather all the EMTs to make sure there are no races before
2087	* changing the VM state.
2088	*/
2089	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2090	vmR3PowerOff, NULL);
2091	LogFlow(("VMR3PowerOff: returns %Rrc\n", rc));
2092	return rc;
2093	}
2094
2095
2096	/**
2097	* Destroys the VM.
2098	*
2099	* The VM must be powered off (or never really powered on) to call this
2100	* function. The VM handle is destroyed and can no longer be used up successful
2101	* return.
2102	*
2103	* @returns VBox status code.
2104	*
2105	* @param pUVM The user mode VM handle.
2106	*
2107	* @thread Any none emulation thread.
2108	* @vmstate Off, Created
2109	* @vmstateto N/A
2110	*/
2111	VMMR3DECL(int) VMR3Destroy(PUVM pUVM)
2112	{
2113	LogFlow(("VMR3Destroy: pUVM=%p\n", pUVM));
2114
2115	/*
2116	* Validate input.
2117	*/
2118	if (!pUVM)
2119	return VERR_INVALID_VM_HANDLE;
2120	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2121	PVM pVM = pUVM->pVM;
2122	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2123	AssertLogRelReturn(!VM_IS_EMT(pVM), VERR_VM_THREAD_IS_EMT);
2124
2125	/*
2126	* Change VM state to destroying and aall vmR3Destroy on each of the EMTs
2127	* ending with EMT(0) doing the bulk of the cleanup.
2128	*/
2129	int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF);
2130	if (RT_FAILURE(rc))
2131	return rc;
2132
2133	rc = VMR3ReqCallWait(pVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM);
2134	AssertLogRelRC(rc);
2135
2136	/*
2137	* Wait for EMTs to quit and destroy the UVM.
2138	*/
2139	vmR3DestroyUVM(pUVM, 30000);
2140
2141	LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n"));
2142	return VINF_SUCCESS;
2143	}
2144
2145
2146	/**
2147	* Internal destruction worker.
2148	*
2149	* This is either called from VMR3Destroy via VMR3ReqCallU or from
2150	* vmR3EmulationThreadWithId when EMT(0) terminates after having called
2151	* VMR3Destroy().
2152	*
2153	* When called on EMT(0), it will performed the great bulk of the destruction.
2154	* When called on the other EMTs, they will do nothing and the whole purpose is
2155	* to return VINF_EM_TERMINATE so they break out of their run loops.
2156	*
2157	* @returns VINF_EM_TERMINATE.
2158	* @param pVM The cross context VM structure.
2159	*/
2160	DECLCALLBACK(int) vmR3Destroy(PVM pVM)
2161	{
2162	PUVM pUVM = pVM->pUVM;
2163	PVMCPU pVCpu = VMMGetCpu(pVM);
2164	Assert(pVCpu);
2165	LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu));
2166
2167	/*
2168	* Only VCPU 0 does the full cleanup (last).
2169	*/
2170	if (pVCpu->idCpu == 0)
2171	{
2172	/*
2173	* Dump statistics to the log.
2174	*/
2175	#if defined(VBOX_WITH_STATISTICS) \|\| defined(LOG_ENABLED)
2176	RTLogFlags(NULL, "nodisabled nobuffered");
2177	#endif
2178	//#ifdef VBOX_WITH_STATISTICS
2179	// STAMR3Dump(pUVM, "*");
2180	//#else
2181	LogRel(("*********************** Statistics ***********************\n"));
2182	STAMR3DumpToReleaseLog(pUVM, "*");
2183	LogRel(("******************* End of statistics ********************\n"));
2184	//#endif
2185
2186	/*
2187	* Destroy the VM components.
2188	*/
2189	int rc = TMR3Term(pVM);
2190	AssertRC(rc);
2191	#ifdef VBOX_WITH_DEBUGGER
2192	rc = DBGCIoTerminate(pUVM, pUVM->vm.s.pvDBGC);
2193	pUVM->vm.s.pvDBGC = NULL;
2194	#endif
2195	AssertRC(rc);
2196	rc = PDMR3Term(pVM);
2197	AssertRC(rc);
2198	rc = GIMR3Term(pVM);
2199	AssertRC(rc);
2200	rc = DBGFR3Term(pVM);
2201	AssertRC(rc);
2202	rc = IEMR3Term(pVM);
2203	AssertRC(rc);
2204	rc = EMR3Term(pVM);
2205	AssertRC(rc);
2206	rc = IOMR3Term(pVM);
2207	AssertRC(rc);
2208	rc = TRPMR3Term(pVM);
2209	AssertRC(rc);
2210	rc = SELMR3Term(pVM);
2211	AssertRC(rc);
2212	rc = HMR3Term(pVM);
2213	AssertRC(rc);
2214	rc = NEMR3Term(pVM);
2215	AssertRC(rc);
2216	rc = PGMR3Term(pVM);
2217	AssertRC(rc);
2218	rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */
2219	AssertRC(rc);
2220	rc = CPUMR3Term(pVM);
2221	AssertRC(rc);
2222	SSMR3Term(pVM);
2223	rc = PDMR3CritSectBothTerm(pVM);
2224	AssertRC(rc);
2225	rc = MMR3Term(pVM);
2226	AssertRC(rc);
2227
2228	/*
2229	* We're done, tell the other EMTs to quit.
2230	*/
2231	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2232	ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2233	LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE));
2234	}
2235
2236	/*
2237	* Decrement the active EMT count here.
2238	*/
2239	PUVMCPU pUVCpu = &pUVM->aCpus[pVCpu->idCpu];
2240	if (!pUVCpu->vm.s.fBeenThruVmDestroy)
2241	{
2242	pUVCpu->vm.s.fBeenThruVmDestroy = true;
2243	ASMAtomicDecU32(&pUVM->vm.s.cActiveEmts);
2244	}
2245	else
2246	AssertFailed();
2247
2248	return VINF_EM_TERMINATE;
2249	}
2250
2251
2252	/**
2253	* Destroys the UVM portion.
2254	*
2255	* This is called as the final step in the VM destruction or as the cleanup
2256	* in case of a creation failure.
2257	*
2258	* @param pUVM The user mode VM structure.
2259	* @param cMilliesEMTWait The number of milliseconds to wait for the emulation
2260	* threads.
2261	*/
2262	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait)
2263	{
2264	/*
2265	* Signal termination of each the emulation threads and
2266	* wait for them to complete.
2267	*/
2268	/* Signal them - in reverse order since EMT(0) waits for the others. */
2269	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2270	if (pUVM->pVM)
2271	VM_FF_SET(pUVM->pVM, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2272	VMCPUID iCpu = pUVM->cCpus;
2273	while (iCpu-- > 0)
2274	{
2275	VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
2276	RTSemEventSignal(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2277	}
2278
2279	/* Wait for EMT(0), it in turn waits for the rest. */
2280	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2281
2282	RTTHREAD const hSelf = RTThreadSelf();
2283	RTTHREAD hThread = pUVM->aCpus[0].vm.s.ThreadEMT;
2284	if ( hThread != NIL_RTTHREAD
2285	&& hThread != hSelf)
2286	{
2287	int rc2 = RTThreadWait(hThread, RT_MAX(cMilliesEMTWait, 2000), NULL);
2288	if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */
2289	rc2 = RTThreadWait(hThread, 1000, NULL);
2290	AssertLogRelMsgRC(rc2, ("iCpu=0 rc=%Rrc\n", rc2));
2291	if (RT_SUCCESS(rc2))
2292	pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD;
2293	}
2294
2295	/* Just in case we're in a weird failure situation w/o EMT(0) to do the
2296	waiting, wait the other EMTs too. */
2297	for (iCpu = 1; iCpu < pUVM->cCpus; iCpu++)
2298	{
2299	ASMAtomicXchgHandle(&pUVM->aCpus[iCpu].vm.s.ThreadEMT, NIL_RTTHREAD, &hThread);
2300	if (hThread != NIL_RTTHREAD)
2301	{
2302	if (hThread != hSelf)
2303	{
2304	int rc2 = RTThreadWait(hThread, 250 /ms/, NULL);
2305	AssertLogRelMsgRC(rc2, ("iCpu=%u rc=%Rrc\n", iCpu, rc2));
2306	if (RT_SUCCESS(rc2))
2307	continue;
2308	}
2309	pUVM->aCpus[iCpu].vm.s.ThreadEMT = hThread;
2310	}
2311	}
2312
2313	/* Cleanup the semaphores. */
2314	iCpu = pUVM->cCpus;
2315	while (iCpu-- > 0)
2316	{
2317	RTSemEventDestroy(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2318	pUVM->aCpus[iCpu].vm.s.EventSemWait = NIL_RTSEMEVENT;
2319	}
2320
2321	/*
2322	* Free the event semaphores associated with the request packets.
2323	*/
2324	unsigned cReqs = 0;
2325	for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++)
2326	{
2327	PVMREQ pReq = pUVM->vm.s.apReqFree[i];
2328	pUVM->vm.s.apReqFree[i] = NULL;
2329	for (; pReq; pReq = pReq->pNext, cReqs++)
2330	{
2331	pReq->enmState = VMREQSTATE_INVALID;
2332	RTSemEventDestroy(pReq->EventSem);
2333	}
2334	}
2335	Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs);
2336
2337	/*
2338	* Kill all queued requests. (There really shouldn't be any!)
2339	*/
2340	for (unsigned i = 0; i < 10; i++)
2341	{
2342	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pPriorityReqs, NULL, PVMREQ);
2343	if (!pReqHead)
2344	{
2345	pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pNormalReqs, NULL, PVMREQ);
2346	if (!pReqHead)
2347	break;
2348	}
2349	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2350
2351	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2352	{
2353	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2354	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2355	RTSemEventSignal(pReq->EventSem);
2356	RTThreadSleep(2);
2357	RTSemEventDestroy(pReq->EventSem);
2358	}
2359	/* give them a chance to respond before we free the request memory. */
2360	RTThreadSleep(32);
2361	}
2362
2363	/*
2364	* Now all queued VCPU requests (again, there shouldn't be any).
2365	*/
2366	for (VMCPUID idCpu = 0; idCpu < pUVM->cCpus; idCpu++)
2367	{
2368	PUVMCPU pUVCpu = &pUVM->aCpus[idCpu];
2369
2370	for (unsigned i = 0; i < 10; i++)
2371	{
2372	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pPriorityReqs, NULL, PVMREQ);
2373	if (!pReqHead)
2374	{
2375	pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pNormalReqs, NULL, PVMREQ);
2376	if (!pReqHead)
2377	break;
2378	}
2379	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2380
2381	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2382	{
2383	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2384	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2385	RTSemEventSignal(pReq->EventSem);
2386	RTThreadSleep(2);
2387	RTSemEventDestroy(pReq->EventSem);
2388	}
2389	/* give them a chance to respond before we free the request memory. */
2390	RTThreadSleep(32);
2391	}
2392	}
2393
2394	/*
2395	* Make sure the VMMR0.r0 module and whatever else is unloaded.
2396	*/
2397	PDMR3TermUVM(pUVM);
2398
2399	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
2400	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
2401
2402	/*
2403	* Terminate the support library if initialized.
2404	*/
2405	if (pUVM->vm.s.pSession)
2406	{
2407	int rc = SUPR3Term(false /fForced/);
2408	AssertRC(rc);
2409	pUVM->vm.s.pSession = NIL_RTR0PTR;
2410	}
2411
2412	/*
2413	* Release the UVM structure reference.
2414	*/
2415	VMR3ReleaseUVM(pUVM);
2416
2417	/*
2418	* Clean up and flush logs.
2419	*/
2420	RTLogFlush(NULL);
2421	}
2422
2423
2424	/**
2425	* Worker which checks integrity of some internal structures.
2426	* This is yet another attempt to track down that AVL tree crash.
2427	*/
2428	static void vmR3CheckIntegrity(PVM pVM)
2429	{
2430	#ifdef VBOX_STRICT
2431	int rc = PGMR3CheckIntegrity(pVM);
2432	AssertReleaseRC(rc);
2433	#else
2434	RT_NOREF_PV(pVM);
2435	#endif
2436	}
2437
2438
2439	/**
2440	* EMT rendezvous worker for VMR3ResetFF for doing soft/warm reset.
2441	*
2442	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESCHEDULE.
2443	* (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
2444	*
2445	* @param pVM The cross context VM structure.
2446	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2447	* @param pvUser The reset flags.
2448	*/
2449	static DECLCALLBACK(VBOXSTRICTRC) vmR3SoftReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2450	{
2451	uint32_t fResetFlags = (uint32_t )pvUser;
2452
2453
2454	/*
2455	* The first EMT will try change the state to resetting. If this fails,
2456	* we won't get called for the other EMTs.
2457	*/
2458	if (pVCpu->idCpu == pVM->cCpus - 1)
2459	{
2460	int rc = vmR3TrySetState(pVM, "vmR3ResetSoft", 3,
2461	VMSTATE_SOFT_RESETTING, VMSTATE_RUNNING,
2462	VMSTATE_SOFT_RESETTING, VMSTATE_SUSPENDED,
2463	VMSTATE_SOFT_RESETTING_LS, VMSTATE_RUNNING_LS);
2464	if (RT_FAILURE(rc))
2465	return rc;
2466	pVM->vm.s.cResets++;
2467	pVM->vm.s.cSoftResets++;
2468	}
2469
2470	/*
2471	* Check the state.
2472	*/
2473	VMSTATE enmVMState = VMR3GetState(pVM);
2474	AssertLogRelMsgReturn( enmVMState == VMSTATE_SOFT_RESETTING
2475	\|\| enmVMState == VMSTATE_SOFT_RESETTING_LS,
2476	("%s\n", VMR3GetStateName(enmVMState)),
2477	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2478
2479	/*
2480	* EMT(0) does the full cleanup after all the other EMTs has been
2481	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2482	*
2483	* Because there are per-cpu reset routines and order may/is important,
2484	* the following sequence looks a bit ugly...
2485	*/
2486
2487	/* Reset the VCpu state. */
2488	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2489
2490	/*
2491	* Soft reset the VM components.
2492	*/
2493	if (pVCpu->idCpu == 0)
2494	{
2495	PDMR3SoftReset(pVM, fResetFlags);
2496	TRPMR3Reset(pVM);
2497	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2498	EMR3Reset(pVM);
2499	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2500	NEMR3Reset(pVM);
2501
2502	/*
2503	* Since EMT(0) is the last to go thru here, it will advance the state.
2504	* (Unlike vmR3HardReset we won't be doing any suspending of live
2505	* migration VMs here since memory is unchanged.)
2506	*/
2507	PUVM pUVM = pVM->pUVM;
2508	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2509	enmVMState = pVM->enmVMState;
2510	if (enmVMState == VMSTATE_SOFT_RESETTING)
2511	{
2512	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2513	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2514	else
2515	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2516	}
2517	else
2518	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING_LS, VMSTATE_SOFT_RESETTING_LS, false /fSetRatherThanClearFF/);
2519	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2520	}
2521
2522	return VINF_EM_RESCHEDULE;
2523	}
2524
2525
2526	/**
2527	* EMT rendezvous worker for VMR3Reset and VMR3ResetFF.
2528	*
2529	* This is called by the emulation threads as a response to the reset request
2530	* issued by VMR3Reset().
2531	*
2532	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This
2533	* is a strict return code, see FNVMMEMTRENDEZVOUS.)
2534	*
2535	* @param pVM The cross context VM structure.
2536	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2537	* @param pvUser Ignored.
2538	*/
2539	static DECLCALLBACK(VBOXSTRICTRC) vmR3HardReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2540	{
2541	Assert(!pvUser); NOREF(pvUser);
2542
2543	/*
2544	* The first EMT will try change the state to resetting. If this fails,
2545	* we won't get called for the other EMTs.
2546	*/
2547	if (pVCpu->idCpu == pVM->cCpus - 1)
2548	{
2549	int rc = vmR3TrySetState(pVM, "vmR3HardReset", 3,
2550	VMSTATE_RESETTING, VMSTATE_RUNNING,
2551	VMSTATE_RESETTING, VMSTATE_SUSPENDED,
2552	VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS);
2553	if (RT_FAILURE(rc))
2554	return rc;
2555	pVM->vm.s.cResets++;
2556	pVM->vm.s.cHardResets++;
2557	}
2558
2559	/*
2560	* Check the state.
2561	*/
2562	VMSTATE enmVMState = VMR3GetState(pVM);
2563	AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING
2564	\|\| enmVMState == VMSTATE_RESETTING_LS,
2565	("%s\n", VMR3GetStateName(enmVMState)),
2566	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2567
2568	/*
2569	* EMT(0) does the full cleanup after all the other EMTs has been
2570	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2571	*
2572	* Because there are per-cpu reset routines and order may/is important,
2573	* the following sequence looks a bit ugly...
2574	*/
2575	if (pVCpu->idCpu == 0)
2576	vmR3CheckIntegrity(pVM);
2577
2578	/* Reset the VCpu state. */
2579	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2580
2581	/* Clear all pending forced actions. */
2582	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST);
2583
2584	/*
2585	* Reset the VM components.
2586	*/
2587	if (pVCpu->idCpu == 0)
2588	{
2589	GIMR3Reset(pVM); /* This must come before PDM and TM. */
2590	PDMR3Reset(pVM);
2591	PGMR3Reset(pVM);
2592	SELMR3Reset(pVM);
2593	TRPMR3Reset(pVM);
2594	IOMR3Reset(pVM);
2595	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2596	TMR3Reset(pVM);
2597	EMR3Reset(pVM);
2598	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2599	NEMR3Reset(pVM);
2600
2601	/*
2602	* Do memory setup.
2603	*/
2604	PGMR3MemSetup(pVM, true /fAtReset/);
2605	PDMR3MemSetup(pVM, true /fAtReset/);
2606
2607	/*
2608	* Since EMT(0) is the last to go thru here, it will advance the state.
2609	* When a live save is active, we will move on to SuspendingLS but
2610	* leave it for VMR3Reset to do the actual suspending due to deadlock risks.
2611	*/
2612	PUVM pUVM = pVM->pUVM;
2613	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2614	enmVMState = pVM->enmVMState;
2615	if (enmVMState == VMSTATE_RESETTING)
2616	{
2617	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2618	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2619	else
2620	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2621	}
2622	else
2623	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS, false /fSetRatherThanClearFF/);
2624	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2625
2626	vmR3CheckIntegrity(pVM);
2627
2628	/*
2629	* Do the suspend bit as well.
2630	* It only requires some EMT(0) work at present.
2631	*/
2632	if (enmVMState != VMSTATE_RESETTING)
2633	{
2634	vmR3SuspendDoWork(pVM);
2635	vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
2636	}
2637	}
2638
2639	return enmVMState == VMSTATE_RESETTING
2640	? VINF_EM_RESET
2641	: 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. */
2642	}
2643
2644
2645	/**
2646	* Internal worker for VMR3Reset, VMR3ResetFF, VMR3TripleFault.
2647	*
2648	* @returns VBox status code.
2649	* @param pVM The cross context VM structure.
2650	* @param fHardReset Whether it's a hard reset or not.
2651	* @param fResetFlags The reset flags (PDMVMRESET_F_XXX).
2652	*/
2653	static VBOXSTRICTRC vmR3ResetCommon(PVM pVM, bool fHardReset, uint32_t fResetFlags)
2654	{
2655	LogFlow(("vmR3ResetCommon: fHardReset=%RTbool fResetFlags=%#x\n", fHardReset, fResetFlags));
2656	int rc;
2657	if (fHardReset)
2658	{
2659	/*
2660	* Hard reset.
2661	*/
2662	/* Check whether we're supposed to power off instead of resetting. */
2663	if (pVM->vm.s.fPowerOffInsteadOfReset)
2664	{
2665	PUVM pUVM = pVM->pUVM;
2666	if ( pUVM->pVmm2UserMethods
2667	&& pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff)
2668	pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff(pUVM->pVmm2UserMethods, pUVM);
2669	return VMR3PowerOff(pUVM);
2670	}
2671
2672	/* Gather all the EMTs to make sure there are no races before changing
2673	the VM state. */
2674	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2675	vmR3HardReset, NULL);
2676	}
2677	else
2678	{
2679	/*
2680	* Soft reset. Since we only support this with a single CPU active,
2681	* we must be on EMT #0 here.
2682	*/
2683	VM_ASSERT_EMT0(pVM);
2684	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2685	vmR3SoftReset, &fResetFlags);
2686	}
2687
2688	LogFlow(("vmR3ResetCommon: returns %Rrc\n", rc));
2689	return rc;
2690	}
2691
2692
2693
2694	/**
2695	* Reset the current VM.
2696	*
2697	* @returns VBox status code.
2698	* @param pUVM The VM to reset.
2699	*/
2700	VMMR3DECL(int) VMR3Reset(PUVM pUVM)
2701	{
2702	LogFlow(("VMR3Reset:\n"));
2703	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2704	PVM pVM = pUVM->pVM;
2705	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2706
2707	return VBOXSTRICTRC_VAL(vmR3ResetCommon(pVM, true, 0));
2708	}
2709
2710
2711	/**
2712	* Handle the reset force flag or triple fault.
2713	*
2714	* This handles both soft and hard resets (see PDMVMRESET_F_XXX).
2715	*
2716	* @returns VBox status code.
2717	* @param pVM The cross context VM structure.
2718	* @thread EMT
2719	*
2720	* @remarks Caller is expected to clear the VM_FF_RESET force flag.
2721	*/
2722	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetFF(PVM pVM)
2723	{
2724	LogFlow(("VMR3ResetFF:\n"));
2725
2726	/*
2727	* First consult the firmware on whether this is a hard or soft reset.
2728	*/
2729	uint32_t fResetFlags;
2730	bool fHardReset = PDMR3GetResetInfo(pVM, 0 /fOverride/, &fResetFlags);
2731	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
2732	}
2733
2734
2735	/**
2736	* For handling a CPU reset on triple fault.
2737	*
2738	* According to one mainboard manual, a CPU triple fault causes the 286 CPU to
2739	* send a SHUTDOWN signal to the chipset. The chipset responds by sending a
2740	* RESET signal to the CPU. So, it should be very similar to a soft/warm reset.
2741	*
2742	* @returns VBox status code.
2743	* @param pVM The cross context VM structure.
2744	* @thread EMT
2745	*/
2746	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetTripleFault(PVM pVM)
2747	{
2748	LogFlow(("VMR3ResetTripleFault:\n"));
2749
2750	/*
2751	* First consult the firmware on whether this is a hard or soft reset.
2752	*/
2753	uint32_t fResetFlags;
2754	bool fHardReset = PDMR3GetResetInfo(pVM, PDMVMRESET_F_TRIPLE_FAULT, &fResetFlags);
2755	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
2756	}
2757
2758
2759	/**
2760	* Gets the user mode VM structure pointer given Pointer to the VM.
2761	*
2762	* @returns Pointer to the user mode VM structure on success. NULL if @a pVM is
2763	* invalid (asserted).
2764	* @param pVM The cross context VM structure.
2765	* @sa VMR3GetVM, VMR3RetainUVM
2766	*/
2767	VMMR3DECL(PUVM) VMR3GetUVM(PVM pVM)
2768	{
2769	VM_ASSERT_VALID_EXT_RETURN(pVM, NULL);
2770	return pVM->pUVM;
2771	}
2772
2773
2774	/**
2775	* Gets the shared VM structure pointer given the pointer to the user mode VM
2776	* structure.
2777	*
2778	* @returns Pointer to the VM.
2779	* NULL if @a pUVM is invalid (asserted) or if no shared VM structure
2780	* is currently associated with it.
2781	* @param pUVM The user mode VM handle.
2782	* @sa VMR3GetUVM
2783	*/
2784	VMMR3DECL(PVM) VMR3GetVM(PUVM pUVM)
2785	{
2786	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2787	return pUVM->pVM;
2788	}
2789
2790
2791	/**
2792	* Retain the user mode VM handle.
2793	*
2794	* @returns Reference count.
2795	* UINT32_MAX if @a pUVM is invalid.
2796	*
2797	* @param pUVM The user mode VM handle.
2798	* @sa VMR3ReleaseUVM
2799	*/
2800	VMMR3DECL(uint32_t) VMR3RetainUVM(PUVM pUVM)
2801	{
2802	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
2803	uint32_t cRefs = ASMAtomicIncU32(&pUVM->vm.s.cUvmRefs);
2804	AssertMsg(cRefs > 0 && cRefs < _64K, ("%u\n", cRefs));
2805	return cRefs;
2806	}
2807
2808
2809	/**
2810	* Does the final release of the UVM structure.
2811	*
2812	* @param pUVM The user mode VM handle.
2813	*/
2814	static void vmR3DoReleaseUVM(PUVM pUVM)
2815	{
2816	/*
2817	* Free the UVM.
2818	*/
2819	Assert(!pUVM->pVM);
2820
2821	MMR3HeapFree(pUVM->vm.s.pszName);
2822	pUVM->vm.s.pszName = NULL;
2823
2824	MMR3TermUVM(pUVM);
2825	STAMR3TermUVM(pUVM);
2826
2827	ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX);
2828	RTTlsFree(pUVM->vm.s.idxTLS);
2829	RTMemPageFree(pUVM, RT_UOFFSETOF_DYN(UVM, aCpus[pUVM->cCpus]));
2830	}
2831
2832
2833	/**
2834	* Releases a refernece to the mode VM handle.
2835	*
2836	* @returns The new reference count, 0 if destroyed.
2837	* UINT32_MAX if @a pUVM is invalid.
2838	*
2839	* @param pUVM The user mode VM handle.
2840	* @sa VMR3RetainUVM
2841	*/
2842	VMMR3DECL(uint32_t) VMR3ReleaseUVM(PUVM pUVM)
2843	{
2844	if (!pUVM)
2845	return 0;
2846	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
2847	uint32_t cRefs = ASMAtomicDecU32(&pUVM->vm.s.cUvmRefs);
2848	if (!cRefs)
2849	vmR3DoReleaseUVM(pUVM);
2850	else
2851	AssertMsg(cRefs < _64K, ("%u\n", cRefs));
2852	return cRefs;
2853	}
2854
2855
2856	/**
2857	* Gets the VM name.
2858	*
2859	* @returns Pointer to a read-only string containing the name. NULL if called
2860	* too early.
2861	* @param pUVM The user mode VM handle.
2862	*/
2863	VMMR3DECL(const char *) VMR3GetName(PUVM pUVM)
2864	{
2865	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2866	return pUVM->vm.s.pszName;
2867	}
2868
2869
2870	/**
2871	* Gets the VM UUID.
2872	*
2873	* @returns pUuid on success, NULL on failure.
2874	* @param pUVM The user mode VM handle.
2875	* @param pUuid Where to store the UUID.
2876	*/
2877	VMMR3DECL(PRTUUID) VMR3GetUuid(PUVM pUVM, PRTUUID pUuid)
2878	{
2879	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2880	AssertPtrReturn(pUuid, NULL);
2881
2882	*pUuid = pUVM->vm.s.Uuid;
2883	return pUuid;
2884	}
2885
2886
2887	/**
2888	* Gets the current VM state.
2889	*
2890	* @returns The current VM state.
2891	* @param pVM The cross context VM structure.
2892	* @thread Any
2893	*/
2894	VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM)
2895	{
2896	AssertMsgReturn(RT_VALID_ALIGNED_PTR(pVM, HOST_PAGE_SIZE), ("%p\n", pVM), VMSTATE_TERMINATED);
2897	VMSTATE enmVMState = pVM->enmVMState;
2898	return enmVMState >= VMSTATE_CREATING && enmVMState <= VMSTATE_TERMINATED ? enmVMState : VMSTATE_TERMINATED;
2899	}
2900
2901
2902	/**
2903	* Gets the current VM state.
2904	*
2905	* @returns The current VM state.
2906	* @param pUVM The user-mode VM handle.
2907	* @thread Any
2908	*/
2909	VMMR3DECL(VMSTATE) VMR3GetStateU(PUVM pUVM)
2910	{
2911	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSTATE_TERMINATED);
2912	if (RT_UNLIKELY(!pUVM->pVM))
2913	return VMSTATE_TERMINATED;
2914	return pUVM->pVM->enmVMState;
2915	}
2916
2917
2918	/**
2919	* Gets the state name string for a VM state.
2920	*
2921	* @returns Pointer to the state name. (readonly)
2922	* @param enmState The state.
2923	*/
2924	VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState)
2925	{
2926	switch (enmState)
2927	{
2928	case VMSTATE_CREATING: return "CREATING";
2929	case VMSTATE_CREATED: return "CREATED";
2930	case VMSTATE_LOADING: return "LOADING";
2931	case VMSTATE_POWERING_ON: return "POWERING_ON";
2932	case VMSTATE_RESUMING: return "RESUMING";
2933	case VMSTATE_RUNNING: return "RUNNING";
2934	case VMSTATE_RUNNING_LS: return "RUNNING_LS";
2935	case VMSTATE_RESETTING: return "RESETTING";
2936	case VMSTATE_RESETTING_LS: return "RESETTING_LS";
2937	case VMSTATE_SOFT_RESETTING: return "SOFT_RESETTING";
2938	case VMSTATE_SOFT_RESETTING_LS: return "SOFT_RESETTING_LS";
2939	case VMSTATE_SUSPENDED: return "SUSPENDED";
2940	case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS";
2941	case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS";
2942	case VMSTATE_SUSPENDING: return "SUSPENDING";
2943	case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS";
2944	case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS";
2945	case VMSTATE_SAVING: return "SAVING";
2946	case VMSTATE_DEBUGGING: return "DEBUGGING";
2947	case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS";
2948	case VMSTATE_POWERING_OFF: return "POWERING_OFF";
2949	case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS";
2950	case VMSTATE_FATAL_ERROR: return "FATAL_ERROR";
2951	case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS";
2952	case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION";
2953	case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS";
2954	case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE";
2955	case VMSTATE_OFF: return "OFF";
2956	case VMSTATE_OFF_LS: return "OFF_LS";
2957	case VMSTATE_DESTROYING: return "DESTROYING";
2958	case VMSTATE_TERMINATED: return "TERMINATED";
2959
2960	default:
2961	AssertMsgFailed(("Unknown state %d\n", enmState));
2962	return "Unknown!\n";
2963	}
2964	}
2965
2966
2967	/**
2968	* Validates the state transition in strict builds.
2969	*
2970	* @returns true if valid, false if not.
2971	*
2972	* @param enmStateOld The old (current) state.
2973	* @param enmStateNew The proposed new state.
2974	*
2975	* @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE
2976	* diagram (under State Machine Diagram).
2977	*/
2978	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew)
2979	{
2980	#ifndef VBOX_STRICT
2981	RT_NOREF2(enmStateOld, enmStateNew);
2982	#else
2983	switch (enmStateOld)
2984	{
2985	case VMSTATE_CREATING:
2986	AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2987	break;
2988
2989	case VMSTATE_CREATED:
2990	AssertMsgReturn( enmStateNew == VMSTATE_LOADING
2991	\|\| enmStateNew == VMSTATE_POWERING_ON
2992	\|\| enmStateNew == VMSTATE_POWERING_OFF
2993	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2994	break;
2995
2996	case VMSTATE_LOADING:
2997	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2998	\|\| enmStateNew == VMSTATE_LOAD_FAILURE
2999	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3000	break;
3001
3002	case VMSTATE_POWERING_ON:
3003	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3004	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3005	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3006	break;
3007
3008	case VMSTATE_RESUMING:
3009	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3010	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3011	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3012	break;
3013
3014	case VMSTATE_RUNNING:
3015	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3016	\|\| enmStateNew == VMSTATE_SUSPENDING
3017	\|\| enmStateNew == VMSTATE_RESETTING
3018	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3019	\|\| enmStateNew == VMSTATE_RUNNING_LS
3020	\|\| enmStateNew == VMSTATE_DEBUGGING
3021	\|\| enmStateNew == VMSTATE_FATAL_ERROR
3022	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
3023	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3024	break;
3025
3026	case VMSTATE_RUNNING_LS:
3027	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS
3028	\|\| enmStateNew == VMSTATE_SUSPENDING_LS
3029	\|\| enmStateNew == VMSTATE_SUSPENDING_EXT_LS
3030	\|\| enmStateNew == VMSTATE_RESETTING_LS
3031	\|\| enmStateNew == VMSTATE_SOFT_RESETTING_LS
3032	\|\| enmStateNew == VMSTATE_RUNNING
3033	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3034	\|\| enmStateNew == VMSTATE_FATAL_ERROR_LS
3035	\|\| enmStateNew == VMSTATE_GURU_MEDITATION_LS
3036	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3037	break;
3038
3039	case VMSTATE_RESETTING:
3040	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3041	break;
3042
3043	case VMSTATE_SOFT_RESETTING:
3044	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3045	break;
3046
3047	case VMSTATE_RESETTING_LS:
3048	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS
3049	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3050	break;
3051
3052	case VMSTATE_SOFT_RESETTING_LS:
3053	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING_LS
3054	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3055	break;
3056
3057	case VMSTATE_SUSPENDING:
3058	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3059	break;
3060
3061	case VMSTATE_SUSPENDING_LS:
3062	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3063	\|\| enmStateNew == VMSTATE_SUSPENDED_LS
3064	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3065	break;
3066
3067	case VMSTATE_SUSPENDING_EXT_LS:
3068	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3069	\|\| enmStateNew == VMSTATE_SUSPENDED_EXT_LS
3070	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3071	break;
3072
3073	case VMSTATE_SUSPENDED:
3074	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3075	\|\| enmStateNew == VMSTATE_SAVING
3076	\|\| enmStateNew == VMSTATE_RESETTING
3077	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3078	\|\| enmStateNew == VMSTATE_RESUMING
3079	\|\| enmStateNew == VMSTATE_LOADING
3080	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3081	break;
3082
3083	case VMSTATE_SUSPENDED_LS:
3084	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3085	\|\| enmStateNew == VMSTATE_SAVING
3086	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3087	break;
3088
3089	case VMSTATE_SUSPENDED_EXT_LS:
3090	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3091	\|\| enmStateNew == VMSTATE_SAVING
3092	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3093	break;
3094
3095	case VMSTATE_SAVING:
3096	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3097	break;
3098
3099	case VMSTATE_DEBUGGING:
3100	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3101	\|\| enmStateNew == VMSTATE_POWERING_OFF
3102	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3103	break;
3104
3105	case VMSTATE_DEBUGGING_LS:
3106	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3107	\|\| enmStateNew == VMSTATE_RUNNING_LS
3108	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3109	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3110	break;
3111
3112	case VMSTATE_POWERING_OFF:
3113	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3114	break;
3115
3116	case VMSTATE_POWERING_OFF_LS:
3117	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3118	\|\| enmStateNew == VMSTATE_OFF_LS
3119	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3120	break;
3121
3122	case VMSTATE_OFF:
3123	AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3124	break;
3125
3126	case VMSTATE_OFF_LS:
3127	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3128	break;
3129
3130	case VMSTATE_FATAL_ERROR:
3131	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3132	break;
3133
3134	case VMSTATE_FATAL_ERROR_LS:
3135	AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR
3136	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3137	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3138	break;
3139
3140	case VMSTATE_GURU_MEDITATION:
3141	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3142	\|\| enmStateNew == VMSTATE_POWERING_OFF
3143	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3144	break;
3145
3146	case VMSTATE_GURU_MEDITATION_LS:
3147	AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION
3148	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3149	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3150	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3151	break;
3152
3153	case VMSTATE_LOAD_FAILURE:
3154	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3155	break;
3156
3157	case VMSTATE_DESTROYING:
3158	AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3159	break;
3160
3161	case VMSTATE_TERMINATED:
3162	default:
3163	AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3164	break;
3165	}
3166	#endif /* VBOX_STRICT */
3167	return true;
3168	}
3169
3170
3171	/**
3172	* Does the state change callouts.
3173	*
3174	* The caller owns the AtStateCritSect.
3175	*
3176	* @param pVM The cross context VM structure.
3177	* @param pUVM The UVM handle.
3178	* @param enmStateNew The New state.
3179	* @param enmStateOld The old state.
3180	*/
3181	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3182	{
3183	LogRel(("Changing the VM state from '%s' to '%s'\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3184
3185	for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext)
3186	{
3187	pCur->pfnAtState(pUVM, VMMR3GetVTable(), enmStateNew, enmStateOld, pCur->pvUser);
3188	if ( enmStateNew != VMSTATE_DESTROYING
3189	&& pVM->enmVMState == VMSTATE_DESTROYING)
3190	break;
3191	AssertMsg(pVM->enmVMState == enmStateNew,
3192	("You are not allowed to change the state while in the change callback, except "
3193	"from destroying the VM. There are restrictions in the way the state changes "
3194	"are propagated up to the EM execution loop and it makes the program flow very "
3195	"difficult to follow. (%s, expected %s, old %s)\n",
3196	VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew),
3197	VMR3GetStateName(enmStateOld)));
3198	}
3199	}
3200
3201
3202	/**
3203	* Sets the current VM state, with the AtStatCritSect already entered.
3204	*
3205	* @param pVM The cross context VM structure.
3206	* @param pUVM The UVM handle.
3207	* @param enmStateNew The new state.
3208	* @param enmStateOld The old state.
3209	* @param fSetRatherThanClearFF The usual behavior is to clear the
3210	* VM_FF_CHECK_VM_STATE force flag, but for
3211	* some transitions (-> guru) we need to kick
3212	* the other EMTs to stop what they're doing.
3213	*/
3214	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF)
3215	{
3216	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3217
3218	AssertMsg(pVM->enmVMState == enmStateOld,
3219	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3220
3221	pUVM->vm.s.enmPrevVMState = enmStateOld;
3222	pVM->enmVMState = enmStateNew;
3223
3224	if (!fSetRatherThanClearFF)
3225	VM_FF_CLEAR(pVM, VM_FF_CHECK_VM_STATE);
3226	else if (pVM->cCpus > 0)
3227	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
3228
3229	vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld);
3230	}
3231
3232
3233	/**
3234	* Sets the current VM state.
3235	*
3236	* @param pVM The cross context VM structure.
3237	* @param enmStateNew The new state.
3238	* @param enmStateOld The old state (for asserting only).
3239	*/
3240	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3241	{
3242	PUVM pUVM = pVM->pUVM;
3243	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3244
3245	RT_NOREF_PV(enmStateOld);
3246	AssertMsg(pVM->enmVMState == enmStateOld,
3247	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3248	vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState, false /fSetRatherThanClearFF/);
3249
3250	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3251	}
3252
3253
3254	/**
3255	* Tries to perform a state transition.
3256	*
3257	* @returns The 1-based ordinal of the succeeding transition.
3258	* VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure.
3259	*
3260	* @param pVM The cross context VM structure.
3261	* @param pszWho Who is trying to change it.
3262	* @param cTransitions The number of transitions in the ellipsis.
3263	* @param ... Transition pairs; new, old.
3264	*/
3265	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...)
3266	{
3267	va_list va;
3268	VMSTATE enmStateNew = VMSTATE_CREATED;
3269	VMSTATE enmStateOld = VMSTATE_CREATED;
3270
3271	#ifdef VBOX_STRICT
3272	/*
3273	* Validate the input first.
3274	*/
3275	va_start(va, cTransitions);
3276	for (unsigned i = 0; i < cTransitions; i++)
3277	{
3278	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3279	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3280	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3281	}
3282	va_end(va);
3283	#endif
3284
3285	/*
3286	* Grab the lock and see if any of the proposed transitions works out.
3287	*/
3288	va_start(va, cTransitions);
3289	int rc = VERR_VM_INVALID_VM_STATE;
3290	PUVM pUVM = pVM->pUVM;
3291	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3292
3293	VMSTATE enmStateCur = pVM->enmVMState;
3294
3295	for (unsigned i = 0; i < cTransitions; i++)
3296	{
3297	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3298	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3299	if (enmStateCur == enmStateOld)
3300	{
3301	vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld, false /fSetRatherThanClearFF/);
3302	rc = i + 1;
3303	break;
3304	}
3305	}
3306
3307	if (RT_FAILURE(rc))
3308	{
3309	/*
3310	* Complain about it.
3311	*/
3312	const char * const pszStateCur = VMR3GetStateName(enmStateCur);
3313	if (cTransitions == 1)
3314	{
3315	LogRel(("%s: %s -> %s failed, because the VM state is actually %s!\n",
3316	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), pszStateCur));
3317	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS, N_("%s failed because the VM state is %s instead of %s"),
3318	pszWho, pszStateCur, VMR3GetStateName(enmStateOld));
3319	AssertMsgFailed(("%s: %s -> %s failed, because the VM state is actually %s\n",
3320	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), pszStateCur));
3321	}
3322	else
3323	{
3324	char szTransitions[4096];
3325	size_t cchTransitions = 0;
3326	szTransitions[0] = '\0';
3327	va_end(va);
3328	va_start(va, cTransitions);
3329	for (unsigned i = 0; i < cTransitions; i++)
3330	{
3331	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3332	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3333	const char * const pszStateNew = VMR3GetStateName(enmStateNew);
3334	const char * const pszStateOld = VMR3GetStateName(enmStateOld);
3335	LogRel(("%s%s -> %s", i ? ", " : " ", pszStateOld, pszStateNew));
3336	cchTransitions += RTStrPrintf(&szTransitions[cchTransitions], sizeof(szTransitions) - cchTransitions,
3337	"%s%s -> %s", i ? ", " : " ", pszStateOld, pszStateNew);
3338	}
3339	Assert(cchTransitions < sizeof(szTransitions) - 64);
3340
3341	LogRel(("%s: %s failed, because the VM state is actually %s!\n", pszWho, szTransitions, pszStateCur));
3342	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3343	N_("%s failed because the current VM state, %s, was not found in the state transition table (%s)"),
3344	pszWho, pszStateCur, szTransitions);
3345	AssertMsgFailed(("%s - state=%s, transitions: %s. Check the cTransitions passed us.\n",
3346	pszWho, pszStateCur, szTransitions));
3347	}
3348	}
3349
3350	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3351	va_end(va);
3352	Assert(rc > 0 \|\| rc < 0);
3353	return rc;
3354	}
3355
3356
3357	/**
3358	* Interface used by EM to signal that it's entering the guru meditation state.
3359	*
3360	* This will notifying other threads.
3361	*
3362	* @returns true if the state changed to Guru, false if no state change.
3363	* @param pVM The cross context VM structure.
3364	*/
3365	VMMR3_INT_DECL(bool) VMR3SetGuruMeditation(PVM pVM)
3366	{
3367	PUVM pUVM = pVM->pUVM;
3368	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3369
3370	VMSTATE enmStateCur = pVM->enmVMState;
3371	bool fRc = true;
3372	if (enmStateCur == VMSTATE_RUNNING)
3373	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING, true /fSetRatherThanClearFF/);
3374	else if (enmStateCur == VMSTATE_RUNNING_LS)
3375	{
3376	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS, true /fSetRatherThanClearFF/);
3377	SSMR3Cancel(pUVM);
3378	}
3379	else
3380	fRc = false;
3381
3382	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3383	return fRc;
3384	}
3385
3386
3387	/**
3388	* Called by vmR3EmulationThreadWithId just before the VM structure is freed.
3389	*
3390	* @param pVM The cross context VM structure.
3391	*/
3392	void vmR3SetTerminated(PVM pVM)
3393	{
3394	vmR3SetState(pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING);
3395	}
3396
3397
3398	/**
3399	* Checks if the VM was teleported and hasn't been fully resumed yet.
3400	*
3401	* This applies to both sides of the teleportation since we may leave a working
3402	* clone behind and the user is allowed to resume this...
3403	*
3404	* @returns true / false.
3405	* @param pVM The cross context VM structure.
3406	* @thread Any thread.
3407	*/
3408	VMMR3_INT_DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM)
3409	{
3410	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
3411	return pVM->vm.s.fTeleportedAndNotFullyResumedYet;
3412	}
3413
3414
3415	/**
3416	* Registers a VM state change callback.
3417	*
3418	* You are not allowed to call any function which changes the VM state from a
3419	* state callback.
3420	*
3421	* @returns VBox status code.
3422	* @param pUVM The VM handle.
3423	* @param pfnAtState Pointer to callback.
3424	* @param pvUser User argument.
3425	* @thread Any.
3426	*/
3427	VMMR3DECL(int) VMR3AtStateRegister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3428	{
3429	LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3430
3431	/*
3432	* Validate input.
3433	*/
3434	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3435	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3436
3437	/*
3438	* Allocate a new record.
3439	*/
3440	PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3441	if (!pNew)
3442	return VERR_NO_MEMORY;
3443
3444	/* fill */
3445	pNew->pfnAtState = pfnAtState;
3446	pNew->pvUser = pvUser;
3447
3448	/* insert */
3449	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3450	pNew->pNext = *pUVM->vm.s.ppAtStateNext;
3451	*pUVM->vm.s.ppAtStateNext = pNew;
3452	pUVM->vm.s.ppAtStateNext = &pNew->pNext;
3453	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3454
3455	return VINF_SUCCESS;
3456	}
3457
3458
3459	/**
3460	* Deregisters a VM state change callback.
3461	*
3462	* @returns VBox status code.
3463	* @param pUVM The VM handle.
3464	* @param pfnAtState Pointer to callback.
3465	* @param pvUser User argument.
3466	* @thread Any.
3467	*/
3468	VMMR3DECL(int) VMR3AtStateDeregister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3469	{
3470	LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3471
3472	/*
3473	* Validate input.
3474	*/
3475	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3476	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3477
3478	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3479
3480	/*
3481	* Search the list for the entry.
3482	*/
3483	PVMATSTATE pPrev = NULL;
3484	PVMATSTATE pCur = pUVM->vm.s.pAtState;
3485	while ( pCur
3486	&& ( pCur->pfnAtState != pfnAtState
3487	\|\| pCur->pvUser != pvUser))
3488	{
3489	pPrev = pCur;
3490	pCur = pCur->pNext;
3491	}
3492	if (!pCur)
3493	{
3494	AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState));
3495	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3496	return VERR_FILE_NOT_FOUND;
3497	}
3498
3499	/*
3500	* Unlink it.
3501	*/
3502	if (pPrev)
3503	{
3504	pPrev->pNext = pCur->pNext;
3505	if (!pCur->pNext)
3506	pUVM->vm.s.ppAtStateNext = &pPrev->pNext;
3507	}
3508	else
3509	{
3510	pUVM->vm.s.pAtState = pCur->pNext;
3511	if (!pCur->pNext)
3512	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
3513	}
3514
3515	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3516
3517	/*
3518	* Free it.
3519	*/
3520	pCur->pfnAtState = NULL;
3521	pCur->pNext = NULL;
3522	MMR3HeapFree(pCur);
3523
3524	return VINF_SUCCESS;
3525	}
3526
3527
3528	/**
3529	* Registers a VM error callback.
3530	*
3531	* @returns VBox status code.
3532	* @param pUVM The VM handle.
3533	* @param pfnAtError Pointer to callback.
3534	* @param pvUser User argument.
3535	* @thread Any.
3536	*/
3537	VMMR3DECL(int) VMR3AtErrorRegister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3538	{
3539	LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3540
3541	/*
3542	* Validate input.
3543	*/
3544	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3545	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3546
3547	/*
3548	* Allocate a new record.
3549	*/
3550	PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3551	if (!pNew)
3552	return VERR_NO_MEMORY;
3553
3554	/* fill */
3555	pNew->pfnAtError = pfnAtError;
3556	pNew->pvUser = pvUser;
3557
3558	/* insert */
3559	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3560	pNew->pNext = *pUVM->vm.s.ppAtErrorNext;
3561	*pUVM->vm.s.ppAtErrorNext = pNew;
3562	pUVM->vm.s.ppAtErrorNext = &pNew->pNext;
3563	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3564
3565	return VINF_SUCCESS;
3566	}
3567
3568
3569	/**
3570	* Deregisters a VM error callback.
3571	*
3572	* @returns VBox status code.
3573	* @param pUVM The VM handle.
3574	* @param pfnAtError Pointer to callback.
3575	* @param pvUser User argument.
3576	* @thread Any.
3577	*/
3578	VMMR3DECL(int) VMR3AtErrorDeregister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3579	{
3580	LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3581
3582	/*
3583	* Validate input.
3584	*/
3585	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3586	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3587
3588	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3589
3590	/*
3591	* Search the list for the entry.
3592	*/
3593	PVMATERROR pPrev = NULL;
3594	PVMATERROR pCur = pUVM->vm.s.pAtError;
3595	while ( pCur
3596	&& ( pCur->pfnAtError != pfnAtError
3597	\|\| pCur->pvUser != pvUser))
3598	{
3599	pPrev = pCur;
3600	pCur = pCur->pNext;
3601	}
3602	if (!pCur)
3603	{
3604	AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError));
3605	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3606	return VERR_FILE_NOT_FOUND;
3607	}
3608
3609	/*
3610	* Unlink it.
3611	*/
3612	if (pPrev)
3613	{
3614	pPrev->pNext = pCur->pNext;
3615	if (!pCur->pNext)
3616	pUVM->vm.s.ppAtErrorNext = &pPrev->pNext;
3617	}
3618	else
3619	{
3620	pUVM->vm.s.pAtError = pCur->pNext;
3621	if (!pCur->pNext)
3622	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
3623	}
3624
3625	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3626
3627	/*
3628	* Free it.
3629	*/
3630	pCur->pfnAtError = NULL;
3631	pCur->pNext = NULL;
3632	MMR3HeapFree(pCur);
3633
3634	return VINF_SUCCESS;
3635	}
3636
3637
3638	/**
3639	* Ellipsis to va_list wrapper for calling pfnAtError.
3640	*/
3641	static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3642	{
3643	va_list va;
3644	va_start(va, pszFormat);
3645	pCur->pfnAtError(pVM->pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va);
3646	va_end(va);
3647	}
3648
3649
3650	/**
3651	* This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV.
3652	* The message is found in VMINT.
3653	*
3654	* @param pVM The cross context VM structure.
3655	* @thread EMT.
3656	*/
3657	VMMR3_INT_DECL(void) VMR3SetErrorWorker(PVM pVM)
3658	{
3659	VM_ASSERT_EMT(pVM);
3660	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Congrats!\n"));
3661
3662	/*
3663	* Unpack the error (if we managed to format one).
3664	*/
3665	PVMERROR pErr = pVM->vm.s.pErrorR3;
3666	const char *pszFile = NULL;
3667	const char *pszFunction = NULL;
3668	uint32_t iLine = 0;
3669	const char *pszMessage;
3670	int32_t rc = VERR_MM_HYPER_NO_MEMORY;
3671	if (pErr)
3672	{
3673	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3674	if (pErr->offFile)
3675	pszFile = (const char *)pErr + pErr->offFile;
3676	iLine = pErr->iLine;
3677	if (pErr->offFunction)
3678	pszFunction = (const char *)pErr + pErr->offFunction;
3679	if (pErr->offMessage)
3680	pszMessage = (const char *)pErr + pErr->offMessage;
3681	else
3682	pszMessage = "No message!";
3683	}
3684	else
3685	pszMessage = "No message! (Failed to allocate memory to put the error message in!)";
3686
3687	/*
3688	* Call the at error callbacks.
3689	*/
3690	PUVM pUVM = pVM->pUVM;
3691	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3692	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3693	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3694	vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage);
3695	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3696	}
3697
3698
3699	/**
3700	* Gets the number of errors raised via VMSetError.
3701	*
3702	* This can be used avoid double error messages.
3703	*
3704	* @returns The error count.
3705	* @param pUVM The VM handle.
3706	*/
3707	VMMR3_INT_DECL(uint32_t) VMR3GetErrorCount(PUVM pUVM)
3708	{
3709	AssertPtrReturn(pUVM, 0);
3710	AssertReturn(pUVM->u32Magic == UVM_MAGIC, 0);
3711	return pUVM->vm.s.cErrors;
3712	}
3713
3714
3715	/**
3716	* Creation time wrapper for vmR3SetErrorUV.
3717	*
3718	* @returns rc.
3719	* @param pUVM Pointer to the user mode VM structure.
3720	* @param rc The VBox status code.
3721	* @param SRC_POS The source position of this error.
3722	* @param pszFormat Format string.
3723	* @param ... The arguments.
3724	* @thread Any thread.
3725	*/
3726	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3727	{
3728	va_list va;
3729	va_start(va, pszFormat);
3730	vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va);
3731	va_end(va);
3732	return rc;
3733	}
3734
3735
3736	/**
3737	* Worker which calls everyone listening to the VM error messages.
3738	*
3739	* @param pUVM Pointer to the user mode VM structure.
3740	* @param rc The VBox status code.
3741	* @param SRC_POS The source position of this error.
3742	* @param pszFormat Format string.
3743	* @param pArgs Pointer to the format arguments.
3744	* @thread EMT
3745	*/
3746	DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char pszFormat, va_list pArgs)
3747	{
3748	/*
3749	* Log the error.
3750	*/
3751	va_list va3;
3752	va_copy(va3, *pArgs);
3753	RTLogRelPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3754	"VMSetError: %N\n",
3755	pszFile, iLine, pszFunction, rc,
3756	pszFormat, &va3);
3757	va_end(va3);
3758
3759	#ifdef LOG_ENABLED
3760	va_copy(va3, *pArgs);
3761	RTLogPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3762	"%N\n",
3763	pszFile, iLine, pszFunction, rc,
3764	pszFormat, &va3);
3765	va_end(va3);
3766	#endif
3767
3768	/*
3769	* Make a copy of the message.
3770	*/
3771	if (pUVM->pVM)
3772	vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs);
3773
3774	/*
3775	* Call the at error callbacks.
3776	*/
3777	bool fCalledSomeone = false;
3778	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3779	ASMAtomicIncU32(&pUVM->vm.s.cErrors);
3780	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3781	{
3782	va_list va2;
3783	va_copy(va2, *pArgs);
3784	pCur->pfnAtError(pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2);
3785	va_end(va2);
3786	fCalledSomeone = true;
3787	}
3788	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3789	}
3790
3791
3792	/**
3793	* Sets the error message.
3794	*
3795	* @returns rc. Meaning you can do:
3796	* @code
3797	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
3798	* @endcode
3799	* @param pUVM The user mode VM handle.
3800	* @param rc VBox status code.
3801	* @param SRC_POS Use RT_SRC_POS.
3802	* @param pszFormat Error message format string.
3803	* @param ... Error message arguments.
3804	* @thread Any
3805	*/
3806	VMMR3DECL(int) VMR3SetError(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3807	{
3808	va_list va;
3809	va_start(va, pszFormat);
3810	int rcRet = VMR3SetErrorV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
3811	va_end(va);
3812	return rcRet;
3813	}
3814
3815
3816	/**
3817	* Sets the error message.
3818	*
3819	* @returns rc. Meaning you can do:
3820	* @code
3821	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
3822	* @endcode
3823	* @param pUVM The user mode VM handle.
3824	* @param rc VBox status code.
3825	* @param SRC_POS Use RT_SRC_POS.
3826	* @param pszFormat Error message format string.
3827	* @param va Error message arguments.
3828	* @thread Any
3829	*/
3830	VMMR3DECL(int) VMR3SetErrorV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
3831	{
3832	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3833
3834	/* Take shortcut when called on EMT, skipping VM handle requirement + validation. */
3835	if (VMR3GetVMCPUThread(pUVM) != NIL_RTTHREAD)
3836	{
3837	va_list vaCopy;
3838	va_copy(vaCopy, va);
3839	vmR3SetErrorUV(pUVM, rc, RT_SRC_POS_ARGS, pszFormat, &vaCopy);
3840	va_end(vaCopy);
3841	return rc;
3842	}
3843
3844	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
3845	return VMSetErrorV(pUVM->pVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
3846	}
3847
3848
3849
3850	/**
3851	* Registers a VM runtime error callback.
3852	*
3853	* @returns VBox status code.
3854	* @param pUVM The user mode VM structure.
3855	* @param pfnAtRuntimeError Pointer to callback.
3856	* @param pvUser User argument.
3857	* @thread Any.
3858	*/
3859	VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3860	{
3861	LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3862
3863	/*
3864	* Validate input.
3865	*/
3866	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3867	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3868
3869	/*
3870	* Allocate a new record.
3871	*/
3872	PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3873	if (!pNew)
3874	return VERR_NO_MEMORY;
3875
3876	/* fill */
3877	pNew->pfnAtRuntimeError = pfnAtRuntimeError;
3878	pNew->pvUser = pvUser;
3879
3880	/* insert */
3881	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3882	pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext;
3883	*pUVM->vm.s.ppAtRuntimeErrorNext = pNew;
3884	pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext;
3885	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3886
3887	return VINF_SUCCESS;
3888	}
3889
3890
3891	/**
3892	* Deregisters a VM runtime error callback.
3893	*
3894	* @returns VBox status code.
3895	* @param pUVM The user mode VM handle.
3896	* @param pfnAtRuntimeError Pointer to callback.
3897	* @param pvUser User argument.
3898	* @thread Any.
3899	*/
3900	VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3901	{
3902	LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3903
3904	/*
3905	* Validate input.
3906	*/
3907	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3908	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3909
3910	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3911
3912	/*
3913	* Search the list for the entry.
3914	*/
3915	PVMATRUNTIMEERROR pPrev = NULL;
3916	PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError;
3917	while ( pCur
3918	&& ( pCur->pfnAtRuntimeError != pfnAtRuntimeError
3919	\|\| pCur->pvUser != pvUser))
3920	{
3921	pPrev = pCur;
3922	pCur = pCur->pNext;
3923	}
3924	if (!pCur)
3925	{
3926	AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError));
3927	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3928	return VERR_FILE_NOT_FOUND;
3929	}
3930
3931	/*
3932	* Unlink it.
3933	*/
3934	if (pPrev)
3935	{
3936	pPrev->pNext = pCur->pNext;
3937	if (!pCur->pNext)
3938	pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext;
3939	}
3940	else
3941	{
3942	pUVM->vm.s.pAtRuntimeError = pCur->pNext;
3943	if (!pCur->pNext)
3944	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
3945	}
3946
3947	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3948
3949	/*
3950	* Free it.
3951	*/
3952	pCur->pfnAtRuntimeError = NULL;
3953	pCur->pNext = NULL;
3954	MMR3HeapFree(pCur);
3955
3956	return VINF_SUCCESS;
3957	}
3958
3959
3960	/**
3961	* EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change
3962	* the state to FatalError(LS).
3963	*
3964	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
3965	* return code, see FNVMMEMTRENDEZVOUS.)
3966	*
3967	* @param pVM The cross context VM structure.
3968	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
3969	* @param pvUser Ignored.
3970	*/
3971	static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser)
3972	{
3973	NOREF(pVCpu);
3974	Assert(!pvUser); NOREF(pvUser);
3975
3976	/*
3977	* The first EMT thru here changes the state.
3978	*/
3979	if (pVCpu->idCpu == pVM->cCpus - 1)
3980	{
3981	int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2,
3982	VMSTATE_FATAL_ERROR, VMSTATE_RUNNING,
3983	VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS);
3984	if (RT_FAILURE(rc))
3985	return rc;
3986	if (rc == 2)
3987	SSMR3Cancel(pVM->pUVM);
3988
3989	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
3990	}
3991
3992	/* This'll make sure we get out of whereever we are (e.g. REM). */
3993	return VINF_EM_SUSPEND;
3994	}
3995
3996
3997	/**
3998	* Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV.
3999	*
4000	* This does the common parts after the error has been saved / retrieved.
4001	*
4002	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4003	*
4004	* @param pVM The cross context VM structure.
4005	* @param fFlags The error flags.
4006	* @param pszErrorId Error ID string.
4007	* @param pszFormat Format string.
4008	* @param pVa Pointer to the format arguments.
4009	*/
4010	static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4011	{
4012	LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags));
4013	PUVM pUVM = pVM->pUVM;
4014
4015	/*
4016	* Take actions before the call.
4017	*/
4018	int rc;
4019	if (fFlags & VMSETRTERR_FLAGS_FATAL)
4020	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
4021	vmR3SetRuntimeErrorChangeState, NULL);
4022	else if (fFlags & VMSETRTERR_FLAGS_SUSPEND)
4023	{
4024	/* Make sure we don't call VMR3Suspend when we shouldn't. As seen in
4025	@bugref{10111} multiple runtime error may be flagged when we run out
4026	of disk space or similar, so don't freak out VMR3Suspend by calling
4027	it in an invalid VM state. */
4028	VMSTATE enmStateCur = pVM->enmVMState;
4029	if (enmStateCur == VMSTATE_RUNNING \|\| enmStateCur == VMSTATE_RUNNING_LS)
4030	rc = VMR3Suspend(pUVM, VMSUSPENDREASON_RUNTIME_ERROR);
4031	}
4032	else
4033	rc = VINF_SUCCESS;
4034
4035	/*
4036	* Do the callback round.
4037	*/
4038	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4039	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
4040	for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext)
4041	{
4042	va_list va;
4043	va_copy(va, *pVa);
4044	pCur->pfnAtRuntimeError(pUVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va);
4045	va_end(va);
4046	}
4047	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4048
4049	return rc;
4050	}
4051
4052
4053	/**
4054	* Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon.
4055	*/
4056	static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
4057	{
4058	va_list va;
4059	va_start(va, pszFormat);
4060	int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va);
4061	va_end(va);
4062	return rc;
4063	}
4064
4065
4066	/**
4067	* This is a worker function for RC and Ring-0 calls to VMSetError and
4068	* VMSetErrorV.
4069	*
4070	* The message is found in VMINT.
4071	*
4072	* @returns VBox status code, see VMSetRuntimeError.
4073	* @param pVM The cross context VM structure.
4074	* @thread EMT.
4075	*/
4076	VMMR3_INT_DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM)
4077	{
4078	VM_ASSERT_EMT(pVM);
4079	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n"));
4080
4081	/*
4082	* Unpack the error (if we managed to format one).
4083	*/
4084	const char *pszErrorId = "SetRuntimeError";
4085	const char *pszMessage = "No message!";
4086	uint32_t fFlags = VMSETRTERR_FLAGS_FATAL;
4087	PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3;
4088	if (pErr)
4089	{
4090	AssertCompile(sizeof(const char) == sizeof(uint8_t));
4091	if (pErr->offErrorId)
4092	pszErrorId = (const char *)pErr + pErr->offErrorId;
4093	if (pErr->offMessage)
4094	pszMessage = (const char *)pErr + pErr->offMessage;
4095	fFlags = pErr->fFlags;
4096	}
4097
4098	/*
4099	* Join cause with vmR3SetRuntimeErrorV.
4100	*/
4101	return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4102	}
4103
4104
4105	/**
4106	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4107	*
4108	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4109	*
4110	* @param pVM The cross context VM structure.
4111	* @param fFlags The error flags.
4112	* @param pszErrorId Error ID string.
4113	* @param pszMessage The error message residing the MM heap.
4114	*
4115	* @thread EMT
4116	*/
4117	DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char pszErrorId, char pszMessage)
4118	{
4119	#if 0 /** @todo make copy of the error msg. */
4120	/*
4121	* Make a copy of the message.
4122	*/
4123	va_list va2;
4124	va_copy(va2, *pVa);
4125	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4126	va_end(va2);
4127	#endif
4128
4129	/*
4130	* Join paths with VMR3SetRuntimeErrorWorker.
4131	*/
4132	int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4133	MMR3HeapFree(pszMessage);
4134	return rc;
4135	}
4136
4137
4138	/**
4139	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4140	*
4141	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4142	*
4143	* @param pVM The cross context VM structure.
4144	* @param fFlags The error flags.
4145	* @param pszErrorId Error ID string.
4146	* @param pszFormat Format string.
4147	* @param pVa Pointer to the format arguments.
4148	*
4149	* @thread EMT
4150	*/
4151	DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4152	{
4153	/*
4154	* Make a copy of the message.
4155	*/
4156	va_list va2;
4157	va_copy(va2, *pVa);
4158	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4159	va_end(va2);
4160
4161	/*
4162	* Join paths with VMR3SetRuntimeErrorWorker.
4163	*/
4164	return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa);
4165	}
4166
4167
4168	/**
4169	* Gets the number of runtime errors raised via VMR3SetRuntimeError.
4170	*
4171	* This can be used avoid double error messages.
4172	*
4173	* @returns The runtime error count.
4174	* @param pUVM The user mode VM handle.
4175	*/
4176	VMMR3_INT_DECL(uint32_t) VMR3GetRuntimeErrorCount(PUVM pUVM)
4177	{
4178	return pUVM->vm.s.cRuntimeErrors;
4179	}
4180
4181
4182	/**
4183	* Gets the ID virtual of the virtual CPU associated with the calling thread.
4184	*
4185	* @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT.
4186	*
4187	* @param pVM The cross context VM structure.
4188	*/
4189	VMMR3_INT_DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM)
4190	{
4191	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4192	return pUVCpu
4193	? pUVCpu->idCpu
4194	: NIL_VMCPUID;
4195	}
4196
4197
4198	/**
4199	* Checks if the VM is long-mode (64-bit) capable or not.
4200	*
4201	* @returns true if VM can operate in long-mode, false otherwise.
4202	* @param pVM The cross context VM structure.
4203	*/
4204	VMMR3_INT_DECL(bool) VMR3IsLongModeAllowed(PVM pVM)
4205	{
4206	switch (pVM->bMainExecutionEngine)
4207	{
4208	case VM_EXEC_ENGINE_HW_VIRT:
4209	return HMIsLongModeAllowed(pVM);
4210
4211	case VM_EXEC_ENGINE_NATIVE_API:
4212	return NEMHCIsLongModeAllowed(pVM);
4213
4214	case VM_EXEC_ENGINE_NOT_SET:
4215	AssertFailed();
4216	RT_FALL_THRU();
4217	default:
4218	return false;
4219	}
4220	}
4221
4222
4223	/**
4224	* Returns the native ID of the current EMT VMCPU thread.
4225	*
4226	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4227	* @param pVM The cross context VM structure.
4228	* @thread EMT
4229	*/
4230	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM)
4231	{
4232	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4233
4234	if (!pUVCpu)
4235	return NIL_RTNATIVETHREAD;
4236
4237	return pUVCpu->vm.s.NativeThreadEMT;
4238	}
4239
4240
4241	/**
4242	* Returns the native ID of the current EMT VMCPU thread.
4243	*
4244	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4245	* @param pUVM The user mode VM structure.
4246	* @thread EMT
4247	*/
4248	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM)
4249	{
4250	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4251
4252	if (!pUVCpu)
4253	return NIL_RTNATIVETHREAD;
4254
4255	return pUVCpu->vm.s.NativeThreadEMT;
4256	}
4257
4258
4259	/**
4260	* Returns the handle of the current EMT VMCPU thread.
4261	*
4262	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4263	* @param pUVM The user mode VM handle.
4264	* @thread EMT
4265	*/
4266	VMMR3DECL(RTTHREAD) VMR3GetVMCPUThread(PUVM pUVM)
4267	{
4268	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4269
4270	if (!pUVCpu)
4271	return NIL_RTTHREAD;
4272
4273	return pUVCpu->vm.s.ThreadEMT;
4274	}
4275
4276
4277	/**
4278	* Returns the handle of the current EMT VMCPU thread.
4279	*
4280	* @returns The IPRT thread handle.
4281	* @param pUVCpu The user mode CPU handle.
4282	* @thread EMT
4283	*/
4284	VMMR3_INT_DECL(RTTHREAD) VMR3GetThreadHandle(PUVMCPU pUVCpu)
4285	{
4286	return pUVCpu->vm.s.ThreadEMT;
4287	}
4288
4289
4290	/**
4291	* Return the package and core ID of a CPU.
4292	*
4293	* @returns VBOX status code.
4294	* @param pUVM The user mode VM handle.
4295	* @param idCpu Virtual CPU to get the ID from.
4296	* @param pidCpuCore Where to store the core ID of the virtual CPU.
4297	* @param pidCpuPackage Where to store the package ID of the virtual CPU.
4298	*
4299	*/
4300	VMMR3DECL(int) VMR3GetCpuCoreAndPackageIdFromCpuId(PUVM pUVM, VMCPUID idCpu, uint32_t pidCpuCore, uint32_t pidCpuPackage)
4301	{
4302	/*
4303	* Validate input.
4304	*/
4305	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4306	PVM pVM = pUVM->pVM;
4307	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4308	AssertPtrReturn(pidCpuCore, VERR_INVALID_POINTER);
4309	AssertPtrReturn(pidCpuPackage, VERR_INVALID_POINTER);
4310	if (idCpu >= pVM->cCpus)
4311	return VERR_INVALID_CPU_ID;
4312
4313	/*
4314	* Set return values.
4315	*/
4316	#ifdef VBOX_WITH_MULTI_CORE
4317	*pidCpuCore = idCpu;
4318	*pidCpuPackage = 0;
4319	#else
4320	*pidCpuCore = 0;
4321	*pidCpuPackage = idCpu;
4322	#endif
4323
4324	return VINF_SUCCESS;
4325	}
4326
4327
4328	/**
4329	* Worker for VMR3HotUnplugCpu.
4330	*
4331	* @returns VINF_EM_WAIT_SPIP (strict status code).
4332	* @param pVM The cross context VM structure.
4333	* @param idCpu The current CPU.
4334	*/
4335	static DECLCALLBACK(int) vmR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4336	{
4337	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
4338	VMCPU_ASSERT_EMT(pVCpu);
4339
4340	/*
4341	* Reset per CPU resources.
4342	*
4343	* Actually only needed for VT-x because the CPU seems to be still in some
4344	* paged mode and startup fails after a new hot plug event. SVM works fine
4345	* even without this.
4346	*/
4347	Log(("vmR3HotUnplugCpu for VCPU %u\n", idCpu));
4348	PGMR3ResetCpu(pVM, pVCpu);
4349	PDMR3ResetCpu(pVCpu);
4350	TRPMR3ResetCpu(pVCpu);
4351	CPUMR3ResetCpu(pVM, pVCpu);
4352	EMR3ResetCpu(pVCpu);
4353	HMR3ResetCpu(pVCpu);
4354	NEMR3ResetCpu(pVCpu, false /fInitIpi/);
4355	return VINF_EM_WAIT_SIPI;
4356	}
4357
4358
4359	/**
4360	* Hot-unplugs a CPU from the guest.
4361	*
4362	* @returns VBox status code.
4363	* @param pUVM The user mode VM handle.
4364	* @param idCpu Virtual CPU to perform the hot unplugging operation on.
4365	*/
4366	VMMR3DECL(int) VMR3HotUnplugCpu(PUVM pUVM, VMCPUID idCpu)
4367	{
4368	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4369	PVM pVM = pUVM->pVM;
4370	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4371	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4372
4373	/** @todo r=bird: Don't destroy the EMT, it'll break VMMR3EmtRendezvous and
4374	* broadcast requests. Just note down somewhere that the CPU is
4375	* offline and send it to SPIP wait. Maybe modify VMCPUSTATE and push
4376	* it out of the EM loops when offline. */
4377	return VMR3ReqCallNoWaitU(pUVM, idCpu, (PFNRT)vmR3HotUnplugCpu, 2, pVM, idCpu);
4378	}
4379
4380
4381	/**
4382	* Hot-plugs a CPU on the guest.
4383	*
4384	* @returns VBox status code.
4385	* @param pUVM The user mode VM handle.
4386	* @param idCpu Virtual CPU to perform the hot plugging operation on.
4387	*/
4388	VMMR3DECL(int) VMR3HotPlugCpu(PUVM pUVM, VMCPUID idCpu)
4389	{
4390	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4391	PVM pVM = pUVM->pVM;
4392	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4393	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4394
4395	/** @todo r-bird: Just mark it online and make sure it waits on SPIP. */
4396	return VINF_SUCCESS;
4397	}
4398
4399
4400	/**
4401	* Changes the VMM execution cap.
4402	*
4403	* @returns VBox status code.
4404	* @param pUVM The user mode VM structure.
4405	* @param uCpuExecutionCap New CPU execution cap in precent, 1-100. Where
4406	* 100 is max performance (default).
4407	*/
4408	VMMR3DECL(int) VMR3SetCpuExecutionCap(PUVM pUVM, uint32_t uCpuExecutionCap)
4409	{
4410	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4411	PVM pVM = pUVM->pVM;
4412	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4413	AssertReturn(uCpuExecutionCap > 0 && uCpuExecutionCap <= 100, VERR_INVALID_PARAMETER);
4414
4415	Log(("VMR3SetCpuExecutionCap: new priority = %d\n", uCpuExecutionCap));
4416	/* Note: not called from EMT. */
4417	pVM->uCpuExecutionCap = uCpuExecutionCap;
4418	return VINF_SUCCESS;
4419	}
4420
4421
4422	/**
4423	* Control whether the VM should power off when resetting.
4424	*
4425	* @returns VBox status code.
4426	* @param pUVM The user mode VM handle.
4427	* @param fPowerOffInsteadOfReset Flag whether the VM should power off when
4428	* resetting.
4429	*/
4430	VMMR3DECL(int) VMR3SetPowerOffInsteadOfReset(PUVM pUVM, bool fPowerOffInsteadOfReset)
4431	{
4432	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4433	PVM pVM = pUVM->pVM;
4434	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4435
4436	/* Note: not called from EMT. */
4437	pVM->vm.s.fPowerOffInsteadOfReset = fPowerOffInsteadOfReset;
4438	return VINF_SUCCESS;
4439	}
4440

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source: vbox/trunk/src/VBox/VMM/VMMR3/VM.cpp@ 95243

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