VM.cpp@ 102869

Last change on this file since 102869 was 100927, checked in by vboxsync, 15 months ago
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1	/* $Id: VM.cpp 100927 2023-08-21 19:42:52Z vboxsync $ */
2	/** @file
3	* VM - Virtual Machine
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	/** @page pg_vm VM API
29	*
30	* This is the encapsulating bit. It provides the APIs that Main and VBoxBFE
31	* use to create a VMM instance for running a guest in. It also provides
32	* facilities for queuing request for execution in EMT (serialization purposes
33	* mostly) and for reporting error back to the VMM user (Main/VBoxBFE).
34	*
35	*
36	* @section sec_vm_design Design Critique / Things To Do
37	*
38	* In hindsight this component is a big design mistake, all this stuff really
39	* belongs in the VMM component. It just seemed like a kind of ok idea at a
40	* time when the VMM bit was a kind of vague. 'VM' also happened to be the name
41	* of the per-VM instance structure (see vm.h), so it kind of made sense.
42	* However as it turned out, VMM(.cpp) is almost empty all it provides in ring-3
43	* is some minor functionally and some "routing" services.
44	*
45	* Fixing this is just a matter of some more or less straight forward
46	* refactoring, the question is just when someone will get to it. Moving the EMT
47	* would be a good start.
48	*
49	*/
50
51
52	/*********************************************************************************************************************************
53	* Header Files *
54	*********************************************************************************************************************************/
55	#define LOG_GROUP LOG_GROUP_VM
56	#include <VBox/vmm/cfgm.h>
57	#include <VBox/vmm/vmm.h>
58	#include <VBox/vmm/gvmm.h>
59	#include <VBox/vmm/mm.h>
60	#include <VBox/vmm/cpum.h>
61	#include <VBox/vmm/selm.h>
62	#include <VBox/vmm/trpm.h>
63	#include <VBox/vmm/dbgf.h>
64	#include <VBox/vmm/pgm.h>
65	#include <VBox/vmm/pdmapi.h>
66	#include <VBox/vmm/pdmdev.h>
67	#include <VBox/vmm/pdmcritsect.h>
68	#include <VBox/vmm/em.h>
69	#include <VBox/vmm/iem.h>
70	#include <VBox/vmm/nem.h>
71	#include <VBox/vmm/apic.h>
72	#include <VBox/vmm/tm.h>
73	#include <VBox/vmm/stam.h>
74	#include <VBox/vmm/iom.h>
75	#include <VBox/vmm/ssm.h>
76	#include <VBox/vmm/hm.h>
77	#include <VBox/vmm/gim.h>
78	#include <VBox/vmm/gcm.h>
79	#include "VMInternal.h"
80	#include <VBox/vmm/vmcc.h>
81
82	#include <VBox/sup.h>
83	#if defined(VBOX_WITH_DTRACE_R3) && !defined(VBOX_WITH_NATIVE_DTRACE)
84	# include <VBox/VBoxTpG.h>
85	#endif
86	#include <VBox/dbg.h>
87	#include <VBox/err.h>
88	#include <VBox/param.h>
89	#include <VBox/log.h>
90	#include <iprt/assert.h>
91	#include <iprt/alloca.h>
92	#include <iprt/asm.h>
93	#include <iprt/env.h>
94	#include <iprt/mem.h>
95	#include <iprt/semaphore.h>
96	#include <iprt/string.h>
97	#ifdef RT_OS_DARWIN
98	# include <iprt/system.h>
99	#endif
100	#include <iprt/time.h>
101	#include <iprt/thread.h>
102	#include <iprt/uuid.h>
103
104
105	/*********************************************************************************************************************************
106	* Internal Functions *
107	*********************************************************************************************************************************/
108	static int vmR3CreateUVM(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, PUVM *ppUVM);
109	static DECLCALLBACK(int) vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM);
110	static int vmR3ReadBaseConfig(PVM pVM, PUVM pUVM, uint32_t cCpus);
111	static int vmR3InitRing3(PVM pVM, PUVM pUVM);
112	static int vmR3InitRing0(PVM pVM);
113	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat);
114	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait);
115	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew);
116	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
117	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...);
118	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF);
119	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
120	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(6, 7);
121
122
123	/**
124	* Creates a virtual machine by calling the supplied configuration constructor.
125	*
126	* On successful returned the VM is powered, i.e. VMR3PowerOn() should be
127	* called to start the execution.
128	*
129	* @returns 0 on success.
130	* @returns VBox error code on failure.
131	* @param cCpus Number of virtual CPUs for the new VM.
132	* @param pVmm2UserMethods An optional method table that the VMM can use
133	* to make the user perform various action, like
134	* for instance state saving.
135	* @param fFlags VMCREATE_F_XXX
136	* @param pfnVMAtError Pointer to callback function for setting VM
137	* errors. This was added as an implicit call to
138	* VMR3AtErrorRegister() since there is no way the
139	* caller can get to the VM handle early enough to
140	* do this on its own.
141	* This is called in the context of an EMT.
142	* @param pvUserVM The user argument passed to pfnVMAtError.
143	* @param pfnCFGMConstructor Pointer to callback function for constructing the VM configuration tree.
144	* This is called in the context of an EMT0.
145	* @param pvUserCFGM The user argument passed to pfnCFGMConstructor.
146	* @param ppVM Where to optionally store the 'handle' of the
147	* created VM.
148	* @param ppUVM Where to optionally store the user 'handle' of
149	* the created VM, this includes one reference as
150	* if VMR3RetainUVM() was called. The caller
151	* MUST remember to pass the returned value to
152	* VMR3ReleaseUVM() once done with the handle.
153	*/
154	VMMR3DECL(int) VMR3Create(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, uint64_t fFlags,
155	PFNVMATERROR pfnVMAtError, void *pvUserVM,
156	PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM,
157	PVM ppVM, PUVM ppUVM)
158	{
159	LogFlow(("VMR3Create: cCpus=%RU32 pVmm2UserMethods=%p fFlags=%#RX64 pfnVMAtError=%p pvUserVM=%p pfnCFGMConstructor=%p pvUserCFGM=%p ppVM=%p ppUVM=%p\n",
160	cCpus, pVmm2UserMethods, fFlags, pfnVMAtError, pvUserVM, pfnCFGMConstructor, pvUserCFGM, ppVM, ppUVM));
161
162	if (pVmm2UserMethods)
163	{
164	AssertPtrReturn(pVmm2UserMethods, VERR_INVALID_POINTER);
165	AssertReturn(pVmm2UserMethods->u32Magic == VMM2USERMETHODS_MAGIC, VERR_INVALID_PARAMETER);
166	AssertReturn(pVmm2UserMethods->u32Version == VMM2USERMETHODS_VERSION, VERR_INVALID_PARAMETER);
167	AssertPtrNullReturn(pVmm2UserMethods->pfnSaveState, VERR_INVALID_POINTER);
168	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyEmtInit, VERR_INVALID_POINTER);
169	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyEmtTerm, VERR_INVALID_POINTER);
170	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyPdmtInit, VERR_INVALID_POINTER);
171	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyPdmtTerm, VERR_INVALID_POINTER);
172	AssertPtrNullReturn(pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff, VERR_INVALID_POINTER);
173	AssertReturn(pVmm2UserMethods->u32EndMagic == VMM2USERMETHODS_MAGIC, VERR_INVALID_PARAMETER);
174	}
175	AssertPtrNullReturn(pfnVMAtError, VERR_INVALID_POINTER);
176	AssertPtrNullReturn(pfnCFGMConstructor, VERR_INVALID_POINTER);
177	AssertPtrNullReturn(ppVM, VERR_INVALID_POINTER);
178	AssertPtrNullReturn(ppUVM, VERR_INVALID_POINTER);
179	AssertReturn(ppVM \|\| ppUVM, VERR_INVALID_PARAMETER);
180	AssertMsgReturn(!(fFlags & ~VMCREATE_F_DRIVERLESS), ("%#RX64\n", fFlags), VERR_INVALID_FLAGS);
181
182	/*
183	* Validate input.
184	*/
185	AssertLogRelMsgReturn(cCpus > 0 && cCpus <= VMM_MAX_CPU_COUNT, ("%RU32\n", cCpus), VERR_TOO_MANY_CPUS);
186
187	/*
188	* Create the UVM so we can register the at-error callback
189	* and consolidate a bit of cleanup code.
190	*/
191	PUVM pUVM = NULL; /* shuts up gcc */
192	int rc = vmR3CreateUVM(cCpus, pVmm2UserMethods, &pUVM);
193	if (RT_FAILURE(rc))
194	return rc;
195	if (pfnVMAtError)
196	rc = VMR3AtErrorRegister(pUVM, pfnVMAtError, pvUserVM);
197	if (RT_SUCCESS(rc))
198	{
199	/*
200	* Initialize the support library creating the session for this VM.
201	*/
202	if (fFlags & VMCREATE_F_DRIVERLESS)
203	rc = SUPR3InitEx(SUPR3INIT_F_DRIVERLESS \| SUPR3INIT_F_DRIVERLESS_IEM_ALLOWED, &pUVM->vm.s.pSession);
204	else
205	rc = SUPR3Init(&pUVM->vm.s.pSession);
206	if (RT_SUCCESS(rc))
207	{
208	#if defined(VBOX_WITH_DTRACE_R3) && !defined(VBOX_WITH_NATIVE_DTRACE)
209	/* Now that we've opened the device, we can register trace probes. */
210	static bool s_fRegisteredProbes = false;
211	if (!SUPR3IsDriverless() && ASMAtomicCmpXchgBool(&s_fRegisteredProbes, true, false))
212	SUPR3TracerRegisterModule(~(uintptr_t)0, "VBoxVMM", &g_VTGObjHeader, (uintptr_t)&g_VTGObjHeader,
213	SUP_TRACER_UMOD_FLAGS_SHARED);
214	#endif
215
216	/*
217	* Call vmR3CreateU in the EMT thread and wait for it to finish.
218	*
219	* Note! VMCPUID_ANY is used here because VMR3ReqQueueU would have trouble
220	* submitting a request to a specific VCPU without a pVM. So, to make
221	* sure init is running on EMT(0), vmR3EmulationThreadWithId makes sure
222	* that only EMT(0) is servicing VMCPUID_ANY requests when pVM is NULL.
223	*/
224	PVMREQ pReq;
225	rc = VMR3ReqCallU(pUVM, VMCPUID_ANY, &pReq, RT_INDEFINITE_WAIT, VMREQFLAGS_VBOX_STATUS,
226	(PFNRT)vmR3CreateU, 4, pUVM, cCpus, pfnCFGMConstructor, pvUserCFGM);
227	if (RT_SUCCESS(rc))
228	{
229	rc = pReq->iStatus;
230	VMR3ReqFree(pReq);
231	if (RT_SUCCESS(rc))
232	{
233	/*
234	* Success!
235	*/
236	if (ppVM)
237	*ppVM = pUVM->pVM;
238	if (ppUVM)
239	{
240	VMR3RetainUVM(pUVM);
241	*ppUVM = pUVM;
242	}
243	LogFlow(("VMR3Create: returns VINF_SUCCESS (pVM=%p, pUVM=%p\n", pUVM->pVM, pUVM));
244	return VINF_SUCCESS;
245	}
246	}
247	else
248	AssertMsgFailed(("VMR3ReqCallU failed rc=%Rrc\n", rc));
249
250	/*
251	* An error occurred during VM creation. Set the error message directly
252	* using the initial callback, as the callback list might not exist yet.
253	*/
254	const char *pszError;
255	switch (rc)
256	{
257	case VERR_VMX_IN_VMX_ROOT_MODE:
258	#ifdef RT_OS_LINUX
259	pszError = N_("VirtualBox can't operate in VMX root mode. "
260	"Please disable the KVM kernel extension, recompile your kernel and reboot");
261	#else
262	pszError = N_("VirtualBox can't operate in VMX root mode. Please close all other virtualization programs.");
263	#endif
264	break;
265
266	#ifndef RT_OS_DARWIN
267	case VERR_HM_CONFIG_MISMATCH:
268	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
269	"This hardware extension is required by the VM configuration");
270	break;
271	#endif
272
273	case VERR_SVM_IN_USE:
274	#ifdef RT_OS_LINUX
275	pszError = N_("VirtualBox can't enable the AMD-V extension. "
276	"Please disable the KVM kernel extension, recompile your kernel and reboot");
277	#else
278	pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs.");
279	#endif
280	break;
281
282	#ifdef RT_OS_LINUX
283	case VERR_SUPDRV_COMPONENT_NOT_FOUND:
284	pszError = N_("One of the kernel modules was not successfully loaded. Make sure "
285	"that VirtualBox is correctly installed, and if you are using EFI "
286	"Secure Boot that the modules are signed if necessary in the right "
287	"way for your host system. Then try to recompile and reload the "
288	"kernel modules by executing "
289	"'/sbin/vboxconfig' as root");
290	break;
291	#endif
292
293	case VERR_RAW_MODE_INVALID_SMP:
294	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
295	"VirtualBox requires this hardware extension to emulate more than one "
296	"guest CPU");
297	break;
298
299	case VERR_SUPDRV_KERNEL_TOO_OLD_FOR_VTX:
300	#ifdef RT_OS_LINUX
301	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
302	"extension. Either upgrade your kernel to Linux 2.6.13 or later or disable "
303	"the VT-x extension in the VM settings. Note that without VT-x you have "
304	"to reduce the number of guest CPUs to one");
305	#else
306	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
307	"extension. Either upgrade your kernel or disable the VT-x extension in the "
308	"VM settings. Note that without VT-x you have to reduce the number of guest "
309	"CPUs to one");
310	#endif
311	break;
312
313	case VERR_PDM_DEVICE_NOT_FOUND:
314	pszError = N_("A virtual device is configured in the VM settings but the device "
315	"implementation is missing.\n"
316	"A possible reason for this error is a missing extension pack. Note "
317	"that as of VirtualBox 4.0, certain features (for example USB 2.0 "
318	"support and remote desktop) are only available from an 'extension "
319	"pack' which must be downloaded and installed separately");
320	break;
321
322	case VERR_PCI_PASSTHROUGH_NO_HM:
323	pszError = N_("PCI passthrough requires VT-x/AMD-V");
324	break;
325
326	case VERR_PCI_PASSTHROUGH_NO_NESTED_PAGING:
327	pszError = N_("PCI passthrough requires nested paging");
328	break;
329
330	default:
331	if (VMR3GetErrorCount(pUVM) == 0)
332	{
333	pszError = (char *)alloca(1024);
334	RTErrQueryMsgFull(rc, (char )pszError, 1024, false /fFailIfUnknown*/);
335	}
336	else
337	pszError = NULL; /* already set. */
338	break;
339	}
340	if (pszError)
341	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
342	}
343	else
344	{
345	/*
346	* An error occurred at support library initialization time (before the
347	* VM could be created). Set the error message directly using the
348	* initial callback, as the callback list doesn't exist yet.
349	*/
350	const char *pszError;
351	switch (rc)
352	{
353	case VERR_VM_DRIVER_LOAD_ERROR:
354	#ifdef RT_OS_LINUX
355	pszError = N_("VirtualBox kernel driver not loaded. The vboxdrv kernel module "
356	"was either not loaded, /dev/vboxdrv is not set up properly, "
357	"or you are using EFI Secure Boot and the module is not signed "
358	"in the right way for your system. If necessary, try setting up "
359	"the kernel module again by executing "
360	"'/sbin/vboxconfig' as root");
361	#else
362	pszError = N_("VirtualBox kernel driver not loaded");
363	#endif
364	break;
365	case VERR_VM_DRIVER_OPEN_ERROR:
366	pszError = N_("VirtualBox kernel driver cannot be opened");
367	break;
368	case VERR_VM_DRIVER_NOT_ACCESSIBLE:
369	#ifdef VBOX_WITH_HARDENING
370	/* This should only happen if the executable wasn't hardened - bad code/build. */
371	pszError = N_("VirtualBox kernel driver not accessible, permission problem. "
372	"Re-install VirtualBox. If you are building it yourself, you "
373	"should make sure it installed correctly and that the setuid "
374	"bit is set on the executables calling VMR3Create.");
375	#else
376	/* This should only happen when mixing builds or with the usual /dev/vboxdrv access issues. */
377	# if defined(RT_OS_DARWIN)
378	pszError = N_("VirtualBox KEXT is not accessible, permission problem. "
379	"If you have built VirtualBox yourself, make sure that you do not "
380	"have the vboxdrv KEXT from a different build or installation loaded.");
381	# elif defined(RT_OS_LINUX)
382	pszError = N_("VirtualBox kernel driver is not accessible, permission problem. "
383	"If you have built VirtualBox yourself, make sure that you do "
384	"not have the vboxdrv kernel module from a different build or "
385	"installation loaded. Also, make sure the vboxdrv udev rule gives "
386	"you the permission you need to access the device.");
387	# elif defined(RT_OS_WINDOWS)
388	pszError = N_("VirtualBox kernel driver is not accessible, permission problem.");
389	# else /* solaris, freebsd, ++. */
390	pszError = N_("VirtualBox kernel module is not accessible, permission problem. "
391	"If you have built VirtualBox yourself, make sure that you do "
392	"not have the vboxdrv kernel module from a different install loaded.");
393	# endif
394	#endif
395	break;
396	case VERR_INVALID_HANDLE: /** @todo track down and fix this error. */
397	case VERR_VM_DRIVER_NOT_INSTALLED:
398	#ifdef RT_OS_LINUX
399	pszError = N_("VirtualBox kernel driver not Installed. The vboxdrv kernel module "
400	"was either not loaded, /dev/vboxdrv is not set up properly, "
401	"or you are using EFI Secure Boot and the module is not signed "
402	"in the right way for your system. If necessary, try setting up "
403	"the kernel module again by executing "
404	"'/sbin/vboxconfig' as root");
405	#else
406	pszError = N_("VirtualBox kernel driver not installed");
407	#endif
408	break;
409	case VERR_NO_MEMORY:
410	pszError = N_("VirtualBox support library out of memory");
411	break;
412	case VERR_VERSION_MISMATCH:
413	case VERR_VM_DRIVER_VERSION_MISMATCH:
414	pszError = N_("The VirtualBox support driver which is running is from a different "
415	"version of VirtualBox. You can correct this by stopping all "
416	"running instances of VirtualBox and reinstalling the software.");
417	break;
418	default:
419	pszError = N_("Unknown error initializing kernel driver");
420	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
421	}
422	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
423	}
424	}
425
426	/* cleanup */
427	vmR3DestroyUVM(pUVM, 2000);
428	LogFlow(("VMR3Create: returns %Rrc\n", rc));
429	return rc;
430	}
431
432
433	/**
434	* Creates the UVM.
435	*
436	* This will not initialize the support library even if vmR3DestroyUVM
437	* will terminate that.
438	*
439	* @returns VBox status code.
440	* @param cCpus Number of virtual CPUs
441	* @param pVmm2UserMethods Pointer to the optional VMM -> User method
442	* table.
443	* @param ppUVM Where to store the UVM pointer.
444	*/
445	static int vmR3CreateUVM(uint32_t cCpus, PCVMM2USERMETHODS pVmm2UserMethods, PUVM *ppUVM)
446	{
447	uint32_t i;
448
449	/*
450	* Create and initialize the UVM.
451	*/
452	PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_UOFFSETOF_DYN(UVM, aCpus[cCpus]));
453	AssertReturn(pUVM, VERR_NO_MEMORY);
454	pUVM->u32Magic = UVM_MAGIC;
455	pUVM->cCpus = cCpus;
456	pUVM->pVmm2UserMethods = pVmm2UserMethods;
457
458	AssertCompile(sizeof(pUVM->vm.s) <= sizeof(pUVM->vm.padding));
459
460	pUVM->vm.s.cUvmRefs = 1;
461	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
462	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
463	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
464
465	pUVM->vm.s.enmHaltMethod = VMHALTMETHOD_BOOTSTRAP;
466	RTUuidClear(&pUVM->vm.s.Uuid);
467
468	/* Initialize the VMCPU array in the UVM. */
469	for (i = 0; i < cCpus; i++)
470	{
471	pUVM->aCpus[i].pUVM = pUVM;
472	pUVM->aCpus[i].idCpu = i;
473	}
474
475	/* Allocate a TLS entry to store the VMINTUSERPERVMCPU pointer. */
476	int rc = RTTlsAllocEx(&pUVM->vm.s.idxTLS, NULL);
477	AssertRC(rc);
478	if (RT_SUCCESS(rc))
479	{
480	/* Allocate a halt method event semaphore for each VCPU. */
481	for (i = 0; i < cCpus; i++)
482	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
483	for (i = 0; i < cCpus; i++)
484	{
485	rc = RTSemEventCreate(&pUVM->aCpus[i].vm.s.EventSemWait);
486	if (RT_FAILURE(rc))
487	break;
488	}
489	if (RT_SUCCESS(rc))
490	{
491	rc = RTCritSectInit(&pUVM->vm.s.AtStateCritSect);
492	if (RT_SUCCESS(rc))
493	{
494	rc = RTCritSectInit(&pUVM->vm.s.AtErrorCritSect);
495	if (RT_SUCCESS(rc))
496	{
497	/*
498	* Init fundamental (sub-)components - STAM, MMR3Heap and PDMLdr.
499	*/
500	rc = PDMR3InitUVM(pUVM);
501	if (RT_SUCCESS(rc))
502	{
503	rc = STAMR3InitUVM(pUVM);
504	if (RT_SUCCESS(rc))
505	{
506	rc = MMR3InitUVM(pUVM);
507	if (RT_SUCCESS(rc))
508	{
509	/*
510	* Start the emulation threads for all VMCPUs.
511	*/
512	for (i = 0; i < cCpus; i++)
513	{
514	rc = RTThreadCreateF(&pUVM->aCpus[i].vm.s.ThreadEMT, vmR3EmulationThread, &pUVM->aCpus[i],
515	_1M, RTTHREADTYPE_EMULATION,
516	RTTHREADFLAGS_WAITABLE \| RTTHREADFLAGS_COM_MTA \| RTTHREADFLAGS_NO_SIGNALS,
517	cCpus > 1 ? "EMT-%u" : "EMT", i);
518	if (RT_FAILURE(rc))
519	break;
520
521	pUVM->aCpus[i].vm.s.NativeThreadEMT = RTThreadGetNative(pUVM->aCpus[i].vm.s.ThreadEMT);
522	}
523
524	if (RT_SUCCESS(rc))
525	{
526	*ppUVM = pUVM;
527	return VINF_SUCCESS;
528	}
529
530	/* bail out. */
531	while (i-- > 0)
532	{
533	/** @todo rainy day: terminate the EMTs. */
534	}
535	MMR3TermUVM(pUVM);
536	}
537	STAMR3TermUVM(pUVM);
538	}
539	PDMR3TermUVM(pUVM);
540	}
541	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
542	}
543	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
544	}
545	}
546	for (i = 0; i < cCpus; i++)
547	{
548	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
549	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
550	}
551	RTTlsFree(pUVM->vm.s.idxTLS);
552	}
553	RTMemPageFree(pUVM, RT_UOFFSETOF_DYN(UVM, aCpus[pUVM->cCpus]));
554	return rc;
555	}
556
557
558	/**
559	* Creates and initializes the VM.
560	*
561	* @thread EMT
562	*/
563	static DECLCALLBACK(int) vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM)
564	{
565	#if (defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)) && !defined(VBOX_WITH_OLD_CPU_SUPPORT)
566	/*
567	* Require SSE2 to be present (already checked for in supdrv, so we
568	* shouldn't ever really get here).
569	*/
570	if (!(ASMCpuId_EDX(1) & X86_CPUID_FEATURE_EDX_SSE2))
571	{
572	LogRel(("vboxdrv: Requires SSE2 (cpuid(0).EDX=%#x)\n", ASMCpuId_EDX(1)));
573	return VERR_UNSUPPORTED_CPU;
574	}
575	#endif
576
577
578	/*
579	* Load the VMMR0.r0 module so that we can call GVMMR0CreateVM.
580	*/
581	if (!SUPR3IsDriverless())
582	{
583	int rc = PDMR3LdrLoadVMMR0U(pUVM);
584	if (RT_FAILURE(rc))
585	{
586	/** @todo we need a cleaner solution for this (VERR_VMX_IN_VMX_ROOT_MODE).
587	* bird: what about moving the message down here? Main picks the first message, right? */
588	if (rc == VERR_VMX_IN_VMX_ROOT_MODE)
589	return rc; /* proper error message set later on */
590	return vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("Failed to load VMMR0.r0"));
591	}
592	}
593
594	/*
595	* Request GVMM to create a new VM for us.
596	*/
597	RTR0PTR pVMR0;
598	int rc = GVMMR3CreateVM(pUVM, cCpus, pUVM->vm.s.pSession, &pUVM->pVM, &pVMR0);
599	if (RT_SUCCESS(rc))
600	{
601	PVM pVM = pUVM->pVM;
602	AssertReleaseMsg(RT_VALID_PTR(pVM), ("pVM=%p pVMR0=%p\n", pVM, pVMR0));
603	AssertRelease(pVM->pVMR0ForCall == pVMR0);
604	AssertRelease(pVM->pSession == pUVM->vm.s.pSession);
605	AssertRelease(pVM->cCpus == cCpus);
606	AssertRelease(pVM->uCpuExecutionCap == 100);
607	AssertCompileMemberAlignment(VM, cpum, 64);
608	AssertCompileMemberAlignment(VM, tm, 64);
609
610	Log(("VMR3Create: Created pUVM=%p pVM=%p pVMR0=%p hSelf=%#x cCpus=%RU32\n", pUVM, pVM, pVMR0, pVM->hSelf, pVM->cCpus));
611
612	/*
613	* Initialize the VM structure and our internal data (VMINT).
614	*/
615	pVM->pUVM = pUVM;
616
617	for (VMCPUID i = 0; i < pVM->cCpus; i++)
618	{
619	PVMCPU pVCpu = pVM->apCpusR3[i];
620	pVCpu->pUVCpu = &pUVM->aCpus[i];
621	pVCpu->idCpu = i;
622	pVCpu->hNativeThread = pUVM->aCpus[i].vm.s.NativeThreadEMT;
623	pVCpu->hThread = pUVM->aCpus[i].vm.s.ThreadEMT;
624	Assert(pVCpu->hNativeThread != NIL_RTNATIVETHREAD);
625	/* hNativeThreadR0 is initialized on EMT registration. */
626	pUVM->aCpus[i].pVCpu = pVCpu;
627	pUVM->aCpus[i].pVM = pVM;
628	}
629
630	/*
631	* Init the configuration.
632	*/
633	rc = CFGMR3Init(pVM, pfnCFGMConstructor, pvUserCFGM);
634	if (RT_SUCCESS(rc))
635	{
636	rc = vmR3ReadBaseConfig(pVM, pUVM, cCpus);
637	if (RT_SUCCESS(rc))
638	{
639	/*
640	* Init the ring-3 components and ring-3 per cpu data, finishing it off
641	* by a relocation round (intermediate context finalization will do this).
642	*/
643	rc = vmR3InitRing3(pVM, pUVM);
644	if (RT_SUCCESS(rc))
645	{
646	LogFlow(("Ring-3 init succeeded\n"));
647
648	/*
649	* Init the Ring-0 components.
650	*/
651	rc = vmR3InitRing0(pVM);
652	if (RT_SUCCESS(rc))
653	{
654	/* Relocate again, because some switcher fixups depends on R0 init results. */
655	VMR3Relocate(pVM, 0 /* offDelta */);
656
657	#ifdef VBOX_WITH_DEBUGGER
658	/*
659	* Init the tcp debugger console if we're building
660	* with debugger support.
661	*/
662	void *pvUser = NULL;
663	rc = DBGCIoCreate(pUVM, &pvUser);
664	if ( RT_SUCCESS(rc)
665	\|\| rc == VERR_NET_ADDRESS_IN_USE)
666	{
667	pUVM->vm.s.pvDBGC = pvUser;
668	#endif
669	/*
670	* Now we can safely set the VM halt method to default.
671	*/
672	rc = vmR3SetHaltMethodU(pUVM, VMHALTMETHOD_DEFAULT);
673	if (RT_SUCCESS(rc))
674	{
675	/*
676	* Set the state and we're done.
677	*/
678	vmR3SetState(pVM, VMSTATE_CREATED, VMSTATE_CREATING);
679	return VINF_SUCCESS;
680	}
681	#ifdef VBOX_WITH_DEBUGGER
682	DBGCIoTerminate(pUVM, pUVM->vm.s.pvDBGC);
683	pUVM->vm.s.pvDBGC = NULL;
684	}
685	#endif
686	//..
687	}
688	vmR3Destroy(pVM);
689	}
690	}
691	//..
692
693	/* Clean CFGM. */
694	int rc2 = CFGMR3Term(pVM);
695	AssertRC(rc2);
696	}
697
698	/*
699	* Do automatic cleanups while the VM structure is still alive and all
700	* references to it are still working.
701	*/
702	PDMR3CritSectBothTerm(pVM);
703
704	/*
705	* Drop all references to VM and the VMCPU structures, then
706	* tell GVMM to destroy the VM.
707	*/
708	pUVM->pVM = NULL;
709	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
710	{
711	pUVM->aCpus[i].pVM = NULL;
712	pUVM->aCpus[i].pVCpu = NULL;
713	}
714	Assert(pUVM->vm.s.enmHaltMethod == VMHALTMETHOD_BOOTSTRAP);
715
716	if (pUVM->cCpus > 1)
717	{
718	/* Poke the other EMTs since they may have stale pVM and pVCpu references
719	on the stack (see VMR3WaitU for instance) if they've been awakened after
720	VM creation. */
721	for (VMCPUID i = 1; i < pUVM->cCpus; i++)
722	VMR3NotifyCpuFFU(&pUVM->aCpus[i], 0);
723	RTThreadSleep(RT_MIN(100 + 25 (pUVM->cCpus - 1), 500)); / very sophisticated */
724	}
725
726	int rc2 = GVMMR3DestroyVM(pUVM, pVM);
727	AssertRC(rc2);
728	}
729	else
730	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("VM creation failed (GVMM)"));
731
732	LogFlow(("vmR3CreateU: returns %Rrc\n", rc));
733	return rc;
734	}
735
736
737	/**
738	* Reads the base configuation from CFGM.
739	*
740	* @returns VBox status code.
741	* @param pVM The cross context VM structure.
742	* @param pUVM The user mode VM structure.
743	* @param cCpus The CPU count given to VMR3Create.
744	*/
745	static int vmR3ReadBaseConfig(PVM pVM, PUVM pUVM, uint32_t cCpus)
746	{
747	PCFGMNODE const pRoot = CFGMR3GetRoot(pVM);
748
749	/*
750	* Base EM and HM config properties.
751	*/
752	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
753	pVM->fHMEnabled = true;
754	#else /* Other architectures must fall back on IEM for the time being: */
755	pVM->fHMEnabled = false;
756	#endif
757
758	/*
759	* Make sure the CPU count in the config data matches.
760	*/
761	uint32_t cCPUsCfg;
762	int rc = CFGMR3QueryU32Def(pRoot, "NumCPUs", &cCPUsCfg, 1);
763	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"NumCPUs\" as integer failed, rc=%Rrc\n", rc), rc);
764	AssertLogRelMsgReturn(cCPUsCfg == cCpus,
765	("Configuration error: \"NumCPUs\"=%RU32 and VMR3Create::cCpus=%RU32 does not match!\n",
766	cCPUsCfg, cCpus),
767	VERR_INVALID_PARAMETER);
768
769	/*
770	* Get the CPU execution cap.
771	*/
772	rc = CFGMR3QueryU32Def(pRoot, "CpuExecutionCap", &pVM->uCpuExecutionCap, 100);
773	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"CpuExecutionCap\" as integer failed, rc=%Rrc\n", rc), rc);
774
775	/*
776	* Get the VM name and UUID.
777	*/
778	rc = CFGMR3QueryStringAllocDef(pRoot, "Name", &pUVM->vm.s.pszName, "<unknown>");
779	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"Name\" failed, rc=%Rrc\n", rc), rc);
780
781	rc = CFGMR3QueryBytes(pRoot, "UUID", &pUVM->vm.s.Uuid, sizeof(pUVM->vm.s.Uuid));
782	if (rc == VERR_CFGM_VALUE_NOT_FOUND)
783	rc = VINF_SUCCESS;
784	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"UUID\" failed, rc=%Rrc\n", rc), rc);
785
786	rc = CFGMR3QueryBoolDef(pRoot, "PowerOffInsteadOfReset", &pVM->vm.s.fPowerOffInsteadOfReset, false);
787	AssertLogRelMsgRCReturn(rc, ("Configuration error: Querying \"PowerOffInsteadOfReset\" failed, rc=%Rrc\n", rc), rc);
788
789	return VINF_SUCCESS;
790	}
791
792
793	/**
794	* Initializes all R3 components of the VM
795	*/
796	static int vmR3InitRing3(PVM pVM, PUVM pUVM)
797	{
798	int rc;
799
800	/*
801	* Register the other EMTs with GVM.
802	*/
803	for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++)
804	{
805	rc = VMR3ReqCallWait(pVM, idCpu, (PFNRT)GVMMR3RegisterVCpu, 2, pVM, idCpu);
806	if (RT_FAILURE(rc))
807	return rc;
808	}
809
810	/*
811	* Register statistics.
812	*/
813	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
814	{
815	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);
816	AssertRC(rc);
817	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);
818	AssertRC(rc);
819	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);
820	AssertRC(rc);
821	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);
822	AssertRC(rc);
823	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);
824	AssertRC(rc);
825	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);
826	AssertRC(rc);
827	}
828
829	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocNew, STAMTYPE_COUNTER, "/VM/Req/AllocNew", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a new packet.");
830	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRaces, STAMTYPE_COUNTER, "/VM/Req/AllocRaces", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc causing races.");
831	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRecycled, STAMTYPE_COUNTER, "/VM/Req/AllocRecycled", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a recycled packet.");
832	STAM_REG(pVM, &pUVM->vm.s.StatReqFree, STAMTYPE_COUNTER, "/VM/Req/Free", STAMUNIT_OCCURENCES, "Number of VMR3ReqFree calls.");
833	STAM_REG(pVM, &pUVM->vm.s.StatReqFreeOverflow, STAMTYPE_COUNTER, "/VM/Req/FreeOverflow", STAMUNIT_OCCURENCES, "Number of times the request was actually freed.");
834	STAM_REG(pVM, &pUVM->vm.s.StatReqProcessed, STAMTYPE_COUNTER, "/VM/Req/Processed", STAMUNIT_OCCURENCES, "Number of processed requests (any queue).");
835	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.");
836	STAM_REG(pVM, &pUVM->vm.s.StatReqPushBackRaces, STAMTYPE_COUNTER, "/VM/Req/PushBackRaces", STAMUNIT_OCCURENCES, "Number of push back races.");
837
838	/* Statistics for ring-0 components: */
839	STAM_REL_REG(pVM, &pVM->R0Stats.gmm.cChunkTlbHits, STAMTYPE_COUNTER, "/GMM/ChunkTlbHits", STAMUNIT_OCCURENCES, "GMMR0PageIdToVirt chunk TBL hits");
840	STAM_REL_REG(pVM, &pVM->R0Stats.gmm.cChunkTlbMisses, STAMTYPE_COUNTER, "/GMM/ChunkTlbMisses", STAMUNIT_OCCURENCES, "GMMR0PageIdToVirt chunk TBL misses");
841
842	/*
843	* Init all R3 components, the order here might be important.
844	* NEM and HM shall be initialized first!
845	*/
846	Assert(pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NOT_SET);
847	rc = NEMR3InitConfig(pVM);
848	if (RT_SUCCESS(rc))
849	rc = HMR3Init(pVM);
850	if (RT_SUCCESS(rc))
851	{
852	ASMCompilerBarrier(); /* HMR3Init will have modified const member bMainExecutionEngine. */
853	Assert( pVM->bMainExecutionEngine == VM_EXEC_ENGINE_HW_VIRT
854	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_NATIVE_API
855	\|\| pVM->bMainExecutionEngine == VM_EXEC_ENGINE_IEM);
856	rc = MMR3Init(pVM);
857	if (RT_SUCCESS(rc))
858	{
859	rc = CPUMR3Init(pVM);
860	if (RT_SUCCESS(rc))
861	{
862	rc = NEMR3InitAfterCPUM(pVM);
863	if (RT_SUCCESS(rc))
864	rc = PGMR3Init(pVM);
865	if (RT_SUCCESS(rc))
866	{
867	rc = MMR3InitPaging(pVM);
868	if (RT_SUCCESS(rc))
869	rc = TMR3Init(pVM);
870	if (RT_SUCCESS(rc))
871	{
872	rc = VMMR3Init(pVM);
873	if (RT_SUCCESS(rc))
874	{
875	#if !defined(VBOX_VMM_TARGET_ARMV8)
876	rc = SELMR3Init(pVM);
877	#endif
878	if (RT_SUCCESS(rc))
879	{
880	rc = TRPMR3Init(pVM);
881	if (RT_SUCCESS(rc))
882	{
883	rc = SSMR3RegisterStub(pVM, "CSAM", 0);
884	if (RT_SUCCESS(rc))
885	{
886	rc = SSMR3RegisterStub(pVM, "PATM", 0);
887	if (RT_SUCCESS(rc))
888	{
889	rc = IOMR3Init(pVM);
890	if (RT_SUCCESS(rc))
891	{
892	rc = EMR3Init(pVM);
893	if (RT_SUCCESS(rc))
894	{
895	rc = IEMR3Init(pVM);
896	if (RT_SUCCESS(rc))
897	{
898	rc = DBGFR3Init(pVM);
899	if (RT_SUCCESS(rc))
900	{
901	/* GIM must be init'd before PDM, gimdevR3Construct()
902	requires GIM provider to be setup. */
903	rc = GIMR3Init(pVM);
904	if (RT_SUCCESS(rc))
905	{
906	#if !defined(VBOX_VMM_TARGET_ARMV8)
907	rc = GCMR3Init(pVM);
908	#endif
909	if (RT_SUCCESS(rc))
910	{
911	rc = PDMR3Init(pVM);
912	if (RT_SUCCESS(rc))
913	{
914	rc = PGMR3InitFinalize(pVM);
915	if (RT_SUCCESS(rc))
916	rc = TMR3InitFinalize(pVM);
917	if (RT_SUCCESS(rc))
918	{
919	PGMR3MemSetup(pVM, false /fAtReset/);
920	PDMR3MemSetup(pVM, false /fAtReset/);
921	}
922	if (RT_SUCCESS(rc))
923	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING3);
924	if (RT_SUCCESS(rc))
925	{
926	LogFlow(("vmR3InitRing3: returns %Rrc\n", VINF_SUCCESS));
927	return VINF_SUCCESS;
928	}
929
930	int rc2 = PDMR3Term(pVM);
931	AssertRC(rc2);
932	}
933	#if !defined(VBOX_VMM_TARGET_ARMV8)
934	int rc2 = GCMR3Term(pVM);
935	AssertRC(rc2);
936	#endif
937	}
938	int rc2 = GIMR3Term(pVM);
939	AssertRC(rc2);
940	}
941	int rc2 = DBGFR3Term(pVM);
942	AssertRC(rc2);
943	}
944	int rc2 = IEMR3Term(pVM);
945	AssertRC(rc2);
946	}
947	int rc2 = EMR3Term(pVM);
948	AssertRC(rc2);
949	}
950	int rc2 = IOMR3Term(pVM);
951	AssertRC(rc2);
952	}
953	}
954	}
955	int rc2 = TRPMR3Term(pVM);
956	AssertRC(rc2);
957	}
958	#if !defined(VBOX_VMM_TARGET_ARMV8)
959	int rc2 = SELMR3Term(pVM);
960	AssertRC(rc2);
961	#endif
962	}
963	int rc2 = VMMR3Term(pVM);
964	AssertRC(rc2);
965	}
966	int rc2 = TMR3Term(pVM);
967	AssertRC(rc2);
968	}
969	int rc2 = PGMR3Term(pVM);
970	AssertRC(rc2);
971	}
972	//int rc2 = CPUMR3Term(pVM);
973	//AssertRC(rc2);
974	}
975	/* MMR3Term is not called here because it'll kill the heap. */
976	}
977	int rc2 = HMR3Term(pVM);
978	AssertRC(rc2);
979	}
980	NEMR3Term(pVM);
981
982	LogFlow(("vmR3InitRing3: returns %Rrc\n", rc));
983	return rc;
984	}
985
986
987	/**
988	* Initializes all R0 components of the VM.
989	*/
990	static int vmR3InitRing0(PVM pVM)
991	{
992	LogFlow(("vmR3InitRing0:\n"));
993
994	/*
995	* Check for FAKE suplib mode.
996	*/
997	int rc = VINF_SUCCESS;
998	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
999	if (!psz \|\| strcmp(psz, "fake"))
1000	{
1001	/*
1002	* Call the VMMR0 component and let it do the init.
1003	*/
1004	rc = VMMR3InitR0(pVM);
1005	}
1006	else
1007	Log(("vmR3InitRing0: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1008
1009	/*
1010	* Do notifications and return.
1011	*/
1012	if (RT_SUCCESS(rc))
1013	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING0);
1014	if (RT_SUCCESS(rc))
1015	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_HM);
1016
1017	LogFlow(("vmR3InitRing0: returns %Rrc\n", rc));
1018	return rc;
1019	}
1020
1021
1022	/**
1023	* Do init completed notifications.
1024	*
1025	* @returns VBox status code.
1026	* @param pVM The cross context VM structure.
1027	* @param enmWhat What's completed.
1028	*/
1029	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
1030	{
1031	int rc = VMMR3InitCompleted(pVM, enmWhat);
1032	if (RT_SUCCESS(rc))
1033	rc = HMR3InitCompleted(pVM, enmWhat);
1034	if (RT_SUCCESS(rc))
1035	rc = NEMR3InitCompleted(pVM, enmWhat);
1036	if (RT_SUCCESS(rc))
1037	rc = PGMR3InitCompleted(pVM, enmWhat);
1038	if (RT_SUCCESS(rc))
1039	rc = CPUMR3InitCompleted(pVM, enmWhat);
1040	if (RT_SUCCESS(rc))
1041	rc = EMR3InitCompleted(pVM, enmWhat);
1042	if (enmWhat == VMINITCOMPLETED_RING3)
1043	{
1044	if (RT_SUCCESS(rc))
1045	rc = SSMR3RegisterStub(pVM, "rem", 1);
1046	}
1047	if (RT_SUCCESS(rc))
1048	rc = PDMR3InitCompleted(pVM, enmWhat);
1049
1050	/* IOM must come after PDM, as device (DevPcArch) may register some final
1051	handlers in their init completion method. */
1052	if (RT_SUCCESS(rc))
1053	rc = IOMR3InitCompleted(pVM, enmWhat);
1054	return rc;
1055	}
1056
1057
1058	/**
1059	* Calls the relocation functions for all VMM components so they can update
1060	* any GC pointers. When this function is called all the basic VM members
1061	* have been updated and the actual memory relocation have been done
1062	* by the PGM/MM.
1063	*
1064	* This is used both on init and on runtime relocations.
1065	*
1066	* @param pVM The cross context VM structure.
1067	* @param offDelta Relocation delta relative to old location.
1068	*/
1069	VMMR3_INT_DECL(void) VMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1070	{
1071	LogFlow(("VMR3Relocate: offDelta=%RGv\n", offDelta));
1072
1073	/*
1074	* The order here is very important!
1075	*/
1076	PGMR3Relocate(pVM, offDelta);
1077	PDMR3LdrRelocateU(pVM->pUVM, offDelta);
1078	PGMR3Relocate(pVM, 0); /* Repeat after PDM relocation. */
1079	CPUMR3Relocate(pVM);
1080	HMR3Relocate(pVM);
1081	#if !defined(VBOX_VMM_TARGET_ARMV8)
1082	SELMR3Relocate(pVM);
1083	#endif
1084	VMMR3Relocate(pVM, offDelta);
1085	#if !defined(VBOX_VMM_TARGET_ARMV8)
1086	SELMR3Relocate(pVM); /* !hack! fix stack! */
1087	#endif
1088	TRPMR3Relocate(pVM, offDelta);
1089	IOMR3Relocate(pVM, offDelta);
1090	EMR3Relocate(pVM);
1091	TMR3Relocate(pVM, offDelta);
1092	IEMR3Relocate(pVM);
1093	DBGFR3Relocate(pVM, offDelta);
1094	PDMR3Relocate(pVM, offDelta);
1095	GIMR3Relocate(pVM, offDelta);
1096	#if !defined(VBOX_VMM_TARGET_ARMV8)
1097	GCMR3Relocate(pVM, offDelta);
1098	#endif
1099	}
1100
1101
1102	/**
1103	* EMT rendezvous worker for VMR3PowerOn.
1104	*
1105	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
1106	* code, see FNVMMEMTRENDEZVOUS.)
1107	*
1108	* @param pVM The cross context VM structure.
1109	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1110	* @param pvUser Ignored.
1111	*/
1112	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser)
1113	{
1114	LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1115	Assert(!pvUser); NOREF(pvUser);
1116
1117	/*
1118	* The first thread thru here tries to change the state. We shouldn't be
1119	* called again if this fails.
1120	*/
1121	if (pVCpu->idCpu == pVM->cCpus - 1)
1122	{
1123	int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED);
1124	if (RT_FAILURE(rc))
1125	return rc;
1126	}
1127
1128	VMSTATE enmVMState = VMR3GetState(pVM);
1129	AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON,
1130	("%s\n", VMR3GetStateName(enmVMState)),
1131	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1132
1133	/*
1134	* All EMTs changes their state to started.
1135	*/
1136	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1137
1138	/*
1139	* EMT(0) is last thru here and it will make the notification calls
1140	* and advance the state.
1141	*/
1142	if (pVCpu->idCpu == 0)
1143	{
1144	PDMR3PowerOn(pVM);
1145	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON);
1146	}
1147
1148	return VINF_SUCCESS;
1149	}
1150
1151
1152	/**
1153	* Powers on the virtual machine.
1154	*
1155	* @returns VBox status code.
1156	*
1157	* @param pUVM The VM to power on.
1158	*
1159	* @thread Any thread.
1160	* @vmstate Created
1161	* @vmstateto PoweringOn+Running
1162	*/
1163	VMMR3DECL(int) VMR3PowerOn(PUVM pUVM)
1164	{
1165	LogFlow(("VMR3PowerOn: pUVM=%p\n", pUVM));
1166	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1167	PVM pVM = pUVM->pVM;
1168	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1169
1170	/*
1171	* Gather all the EMTs to reduce the init TSC drift and keep
1172	* the state changing APIs a bit uniform.
1173	*/
1174	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1175	vmR3PowerOn, NULL);
1176	LogFlow(("VMR3PowerOn: returns %Rrc\n", rc));
1177	return rc;
1178	}
1179
1180
1181	/**
1182	* Does the suspend notifications.
1183	*
1184	* @param pVM The cross context VM structure.
1185	* @thread EMT(0)
1186	*/
1187	static void vmR3SuspendDoWork(PVM pVM)
1188	{
1189	PDMR3Suspend(pVM);
1190	}
1191
1192
1193	/**
1194	* EMT rendezvous worker for VMR3Suspend.
1195	*
1196	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
1197	* return code, see FNVMMEMTRENDEZVOUS.)
1198	*
1199	* @param pVM The cross context VM structure.
1200	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1201	* @param pvUser Ignored.
1202	*/
1203	static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1204	{
1205	VMSUSPENDREASON enmReason = (VMSUSPENDREASON)(uintptr_t)pvUser;
1206	LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1207
1208	/*
1209	* The first EMT switches the state to suspending. If this fails because
1210	* something was racing us in one way or the other, there will be no more
1211	* calls and thus the state assertion below is not going to annoy anyone.
1212	*
1213	* Note! Changes to the state transition here needs to be reflected in the
1214	* checks in vmR3SetRuntimeErrorCommon!
1215	*/
1216	if (pVCpu->idCpu == pVM->cCpus - 1)
1217	{
1218	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1219	VMSTATE_SUSPENDING, VMSTATE_RUNNING,
1220	VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS);
1221	if (RT_FAILURE(rc))
1222	return rc;
1223	pVM->pUVM->vm.s.enmSuspendReason = enmReason;
1224	}
1225
1226	VMSTATE enmVMState = VMR3GetState(pVM);
1227	AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING
1228	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS,
1229	("%s\n", VMR3GetStateName(enmVMState)),
1230	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1231
1232	/*
1233	* EMT(0) does the actually suspending after all the other CPUs have
1234	* been thru here.
1235	*/
1236	if (pVCpu->idCpu == 0)
1237	{
1238	vmR3SuspendDoWork(pVM);
1239
1240	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1241	VMSTATE_SUSPENDED, VMSTATE_SUSPENDING,
1242	VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS);
1243	if (RT_FAILURE(rc))
1244	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1245	}
1246
1247	return VINF_EM_SUSPEND;
1248	}
1249
1250
1251	/**
1252	* Suspends a running VM.
1253	*
1254	* @returns VBox status code. When called on EMT, this will be a strict status
1255	* code that has to be propagated up the call stack.
1256	*
1257	* @param pUVM The VM to suspend.
1258	* @param enmReason The reason for suspending.
1259	*
1260	* @thread Any thread.
1261	* @vmstate Running or RunningLS
1262	* @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS
1263	*/
1264	VMMR3DECL(int) VMR3Suspend(PUVM pUVM, VMSUSPENDREASON enmReason)
1265	{
1266	LogFlow(("VMR3Suspend: pUVM=%p\n", pUVM));
1267	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1268	AssertReturn(enmReason > VMSUSPENDREASON_INVALID && enmReason < VMSUSPENDREASON_END, VERR_INVALID_PARAMETER);
1269
1270	/*
1271	* Gather all the EMTs to make sure there are no races before
1272	* changing the VM state.
1273	*/
1274	int rc = VMMR3EmtRendezvous(pUVM->pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1275	vmR3Suspend, (void *)(uintptr_t)enmReason);
1276	LogFlow(("VMR3Suspend: returns %Rrc\n", rc));
1277	return rc;
1278	}
1279
1280
1281	/**
1282	* Retrieves the reason for the most recent suspend.
1283	*
1284	* @returns Suspend reason. VMSUSPENDREASON_INVALID if no suspend has been done
1285	* or the handle is invalid.
1286	* @param pUVM The user mode VM handle.
1287	*/
1288	VMMR3DECL(VMSUSPENDREASON) VMR3GetSuspendReason(PUVM pUVM)
1289	{
1290	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSUSPENDREASON_INVALID);
1291	return pUVM->vm.s.enmSuspendReason;
1292	}
1293
1294
1295	/**
1296	* EMT rendezvous worker for VMR3Resume.
1297	*
1298	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1299	* return code, see FNVMMEMTRENDEZVOUS.)
1300	*
1301	* @param pVM The cross context VM structure.
1302	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1303	* @param pvUser Reason.
1304	*/
1305	static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser)
1306	{
1307	VMRESUMEREASON enmReason = (VMRESUMEREASON)(uintptr_t)pvUser;
1308	LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1309
1310	/*
1311	* The first thread thru here tries to change the state. We shouldn't be
1312	* called again if this fails.
1313	*/
1314	if (pVCpu->idCpu == pVM->cCpus - 1)
1315	{
1316	int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED);
1317	if (RT_FAILURE(rc))
1318	return rc;
1319	pVM->pUVM->vm.s.enmResumeReason = enmReason;
1320	}
1321
1322	VMSTATE enmVMState = VMR3GetState(pVM);
1323	AssertMsgReturn(enmVMState == VMSTATE_RESUMING,
1324	("%s\n", VMR3GetStateName(enmVMState)),
1325	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1326
1327	#if 0
1328	/*
1329	* All EMTs changes their state to started.
1330	*/
1331	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1332	#endif
1333
1334	/*
1335	* EMT(0) is last thru here and it will make the notification calls
1336	* and advance the state.
1337	*/
1338	if (pVCpu->idCpu == 0)
1339	{
1340	PDMR3Resume(pVM);
1341	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING);
1342	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1343	}
1344
1345	return VINF_EM_RESUME;
1346	}
1347
1348
1349	/**
1350	* Resume VM execution.
1351	*
1352	* @returns VBox status code. When called on EMT, this will be a strict status
1353	* code that has to be propagated up the call stack.
1354	*
1355	* @param pUVM The user mode VM handle.
1356	* @param enmReason The reason we're resuming.
1357	*
1358	* @thread Any thread.
1359	* @vmstate Suspended
1360	* @vmstateto Running
1361	*/
1362	VMMR3DECL(int) VMR3Resume(PUVM pUVM, VMRESUMEREASON enmReason)
1363	{
1364	LogFlow(("VMR3Resume: pUVM=%p\n", pUVM));
1365	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1366	PVM pVM = pUVM->pVM;
1367	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1368	AssertReturn(enmReason > VMRESUMEREASON_INVALID && enmReason < VMRESUMEREASON_END, VERR_INVALID_PARAMETER);
1369
1370	/*
1371	* Gather all the EMTs to make sure there are no races before
1372	* changing the VM state.
1373	*/
1374	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1375	vmR3Resume, (void *)(uintptr_t)enmReason);
1376	LogFlow(("VMR3Resume: returns %Rrc\n", rc));
1377	return rc;
1378	}
1379
1380
1381	/**
1382	* Retrieves the reason for the most recent resume.
1383	*
1384	* @returns Resume reason. VMRESUMEREASON_INVALID if no suspend has been
1385	* done or the handle is invalid.
1386	* @param pUVM The user mode VM handle.
1387	*/
1388	VMMR3DECL(VMRESUMEREASON) VMR3GetResumeReason(PUVM pUVM)
1389	{
1390	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMRESUMEREASON_INVALID);
1391	return pUVM->vm.s.enmResumeReason;
1392	}
1393
1394
1395	/**
1396	* EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM
1397	* after the live step has been completed.
1398	*
1399	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1400	* return code, see FNVMMEMTRENDEZVOUS.)
1401	*
1402	* @param pVM The cross context VM structure.
1403	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1404	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1405	*/
1406	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1407	{
1408	LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1409	bool pfSuspended = (bool )pvUser;
1410
1411	/*
1412	* The first thread thru here tries to change the state. We shouldn't be
1413	* called again if this fails.
1414	*/
1415	if (pVCpu->idCpu == pVM->cCpus - 1U)
1416	{
1417	PUVM pUVM = pVM->pUVM;
1418	int rc;
1419
1420	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
1421	VMSTATE enmVMState = pVM->enmVMState;
1422	switch (enmVMState)
1423	{
1424	case VMSTATE_RUNNING_LS:
1425	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS, false /fSetRatherThanClearFF/);
1426	rc = VINF_SUCCESS;
1427	break;
1428
1429	case VMSTATE_SUSPENDED_EXT_LS:
1430	case VMSTATE_SUSPENDED_LS: /* (via reset) */
1431	rc = VINF_SUCCESS;
1432	break;
1433
1434	case VMSTATE_DEBUGGING_LS:
1435	rc = VERR_TRY_AGAIN;
1436	break;
1437
1438	case VMSTATE_OFF_LS:
1439	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS, false /fSetRatherThanClearFF/);
1440	rc = VERR_SSM_LIVE_POWERED_OFF;
1441	break;
1442
1443	case VMSTATE_FATAL_ERROR_LS:
1444	vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, false /fSetRatherThanClearFF/);
1445	rc = VERR_SSM_LIVE_FATAL_ERROR;
1446	break;
1447
1448	case VMSTATE_GURU_MEDITATION_LS:
1449	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, false /fSetRatherThanClearFF/);
1450	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1451	break;
1452
1453	case VMSTATE_POWERING_OFF_LS:
1454	case VMSTATE_SUSPENDING_EXT_LS:
1455	case VMSTATE_RESETTING_LS:
1456	default:
1457	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
1458	rc = VERR_VM_UNEXPECTED_VM_STATE;
1459	break;
1460	}
1461	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
1462	if (RT_FAILURE(rc))
1463	{
1464	LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState)));
1465	return rc;
1466	}
1467	}
1468
1469	VMSTATE enmVMState = VMR3GetState(pVM);
1470	AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS,
1471	("%s\n", VMR3GetStateName(enmVMState)),
1472	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1473
1474	/*
1475	* Only EMT(0) have work to do since it's last thru here.
1476	*/
1477	if (pVCpu->idCpu == 0)
1478	{
1479	vmR3SuspendDoWork(pVM);
1480	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1,
1481	VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
1482	if (RT_FAILURE(rc))
1483	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1484
1485	*pfSuspended = true;
1486	}
1487
1488	return VINF_EM_SUSPEND;
1489	}
1490
1491
1492	/**
1493	* EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a
1494	* SSMR3LiveDoStep1 failure.
1495	*
1496	* Doing this as a rendezvous operation avoids all annoying transition
1497	* states.
1498	*
1499	* @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_*
1500	* status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
1501	*
1502	* @param pVM The cross context VM structure.
1503	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1504	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1505	*/
1506	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser)
1507	{
1508	LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1509	bool pfSuspended = (bool )pvUser;
1510	NOREF(pVCpu);
1511
1512	int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 8,
1513	VMSTATE_OFF, VMSTATE_OFF_LS, /* 1 */
1514	VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, /* 2 */
1515	VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, /* 3 */
1516	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_LS, /* 4 */
1517	VMSTATE_SUSPENDED, VMSTATE_SAVING,
1518	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS,
1519	VMSTATE_RUNNING, VMSTATE_RUNNING_LS,
1520	VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS);
1521	if (rc == 1)
1522	rc = VERR_SSM_LIVE_POWERED_OFF;
1523	else if (rc == 2)
1524	rc = VERR_SSM_LIVE_FATAL_ERROR;
1525	else if (rc == 3)
1526	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1527	else if (rc == 4)
1528	{
1529	*pfSuspended = true;
1530	rc = VINF_SUCCESS;
1531	}
1532	else if (rc > 0)
1533	rc = VINF_SUCCESS;
1534	return rc;
1535	}
1536
1537
1538	/**
1539	* EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save.
1540	*
1541	* @returns VBox status code.
1542	* @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called.
1543	*
1544	* @param pVM The cross context VM structure.
1545	* @param pSSM The handle of saved state operation.
1546	*
1547	* @thread EMT(0)
1548	*/
1549	static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM)
1550	{
1551	LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM));
1552	VM_ASSERT_EMT0(pVM);
1553
1554	/*
1555	* Advance the state and mark if VMR3Suspend was called.
1556	*/
1557	int rc = VINF_SUCCESS;
1558	VMSTATE enmVMState = VMR3GetState(pVM);
1559	if (enmVMState == VMSTATE_SUSPENDED_LS)
1560	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS);
1561	else
1562	{
1563	if (enmVMState != VMSTATE_SAVING)
1564	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS);
1565	rc = VINF_SSM_LIVE_SUSPENDED;
1566	}
1567
1568	/*
1569	* Finish up and release the handle. Careful with the status codes.
1570	*/
1571	int rc2 = SSMR3LiveDoStep2(pSSM);
1572	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1573	rc = rc2;
1574
1575	rc2 = SSMR3LiveDone(pSSM);
1576	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1577	rc = rc2;
1578
1579	/*
1580	* Advance to the final state and return.
1581	*/
1582	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1583	Assert(rc > VINF_EM_LAST \|\| rc < VINF_EM_FIRST);
1584	return rc;
1585	}
1586
1587
1588	/**
1589	* Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or
1590	* SSMR3LiveSave.
1591	*
1592	* @returns VBox status code.
1593	*
1594	* @param pVM The cross context VM structure.
1595	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1596	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1597	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1598	* @param pvStreamOpsUser The user argument to the stream methods.
1599	* @param enmAfter What to do afterwards.
1600	* @param pfnProgress Progress callback. Optional.
1601	* @param pvProgressUser User argument for the progress callback.
1602	* @param ppSSM Where to return the saved state handle in case of a
1603	* live snapshot scenario.
1604	*
1605	* @thread EMT
1606	*/
1607	static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1608	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, PSSMHANDLE ppSSM)
1609	{
1610	int rc = VINF_SUCCESS;
1611
1612	LogFlow(("vmR3Save: pVM=%p cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p ppSSM=%p\n",
1613	pVM, cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM));
1614
1615	/*
1616	* Validate input.
1617	*/
1618	AssertPtrNull(pszFilename);
1619	AssertPtrNull(pStreamOps);
1620	AssertPtr(pVM);
1621	Assert( enmAfter == SSMAFTER_DESTROY
1622	\|\| enmAfter == SSMAFTER_CONTINUE
1623	\|\| enmAfter == SSMAFTER_TELEPORT);
1624	AssertPtr(ppSSM);
1625	*ppSSM = NULL;
1626
1627	/*
1628	* Change the state and perform/start the saving.
1629	*/
1630	rc = vmR3TrySetState(pVM, "VMR3Save", 2,
1631	VMSTATE_SAVING, VMSTATE_SUSPENDED,
1632	VMSTATE_RUNNING_LS, VMSTATE_RUNNING);
1633	if (rc == 1 && enmAfter != SSMAFTER_TELEPORT)
1634	{
1635	rc = SSMR3Save(pVM, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser);
1636	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1637	}
1638	else if (rc == 2 \|\| enmAfter == SSMAFTER_TELEPORT)
1639	{
1640	if (enmAfter == SSMAFTER_TELEPORT)
1641	pVM->vm.s.fTeleportedAndNotFullyResumedYet = true;
1642	rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1643	enmAfter, pfnProgress, pvProgressUser, ppSSM);
1644	/* (We're not subject to cancellation just yet.) */
1645	}
1646	else
1647	Assert(RT_FAILURE(rc));
1648	return rc;
1649	}
1650
1651
1652	/**
1653	* Common worker for VMR3Save and VMR3Teleport.
1654	*
1655	* @returns VBox status code.
1656	*
1657	* @param pVM The cross context VM structure.
1658	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1659	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1660	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1661	* @param pvStreamOpsUser The user argument to the stream methods.
1662	* @param enmAfter What to do afterwards.
1663	* @param pfnProgress Progress callback. Optional.
1664	* @param pvProgressUser User argument for the progress callback.
1665	* @param pfSuspended Set if we suspended the VM.
1666	*
1667	* @thread Non-EMT
1668	*/
1669	static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime,
1670	const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1671	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1672	{
1673	/*
1674	* Request the operation in EMT(0).
1675	*/
1676	PSSMHANDLE pSSM;
1677	int rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/,
1678	(PFNRT)vmR3Save, 9, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1679	enmAfter, pfnProgress, pvProgressUser, &pSSM);
1680	if ( RT_SUCCESS(rc)
1681	&& pSSM)
1682	{
1683	/*
1684	* Live snapshot.
1685	*
1686	* The state handling here is kind of tricky, doing it on EMT(0) helps
1687	* a bit. See the VMSTATE diagram for details.
1688	*/
1689	rc = SSMR3LiveDoStep1(pSSM);
1690	if (RT_SUCCESS(rc))
1691	{
1692	if (VMR3GetState(pVM) != VMSTATE_SAVING)
1693	for (;;)
1694	{
1695	/* Try suspend the VM. */
1696	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1697	vmR3LiveDoSuspend, pfSuspended);
1698	if (rc != VERR_TRY_AGAIN)
1699	break;
1700
1701	/* Wait for the state to change. */
1702	RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */
1703	}
1704	if (RT_SUCCESS(rc))
1705	rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM);
1706	else
1707	{
1708	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1709	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc)); NOREF(rc2);
1710	}
1711	}
1712	else
1713	{
1714	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1715	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1716
1717	rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, pfSuspended);
1718	if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED)
1719	rc = rc2;
1720	}
1721	}
1722
1723	return rc;
1724	}
1725
1726
1727	/**
1728	* Save current VM state.
1729	*
1730	* Can be used for both saving the state and creating snapshots.
1731	*
1732	* When called for a VM in the Running state, the saved state is created live
1733	* and the VM is only suspended when the final part of the saving is preformed.
1734	* The VM state will not be restored to Running in this case and it's up to the
1735	* caller to call VMR3Resume if this is desirable. (The rational is that the
1736	* caller probably wish to reconfigure the disks before resuming the VM.)
1737	*
1738	* @returns VBox status code.
1739	*
1740	* @param pUVM The VM which state should be saved.
1741	* @param pszFilename The name of the save state file.
1742	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1743	* @param pvStreamOpsUser The user argument to the stream methods.
1744	* @param fContinueAfterwards Whether continue execution afterwards or not.
1745	* When in doubt, set this to true.
1746	* @param pfnProgress Progress callback. Optional.
1747	* @param pvUser User argument for the progress callback.
1748	* @param pfSuspended Set if we suspended the VM.
1749	*
1750	* @thread Non-EMT.
1751	* @vmstate Suspended or Running
1752	* @vmstateto Saving+Suspended or
1753	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1754	*/
1755	VMMR3DECL(int) VMR3Save(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1756	bool fContinueAfterwards, PFNVMPROGRESS pfnProgress, void *pvUser,
1757	bool *pfSuspended)
1758	{
1759	LogFlow(("VMR3Save: pUVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p pfSuspended=%p\n",
1760	pUVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser, pfSuspended));
1761
1762	/*
1763	* Validate input.
1764	*/
1765	AssertPtr(pfSuspended);
1766	*pfSuspended = false;
1767	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1768	PVM pVM = pUVM->pVM;
1769	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1770	VM_ASSERT_OTHER_THREAD(pVM);
1771	AssertReturn(pszFilename \|\| pStreamOps, VERR_INVALID_POINTER);
1772	AssertReturn( (!pStreamOps && *pszFilename)
1773	\|\| pStreamOps,
1774	VERR_INVALID_PARAMETER);
1775	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1776
1777	/*
1778	* Join paths with VMR3Teleport.
1779	*/
1780	SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY;
1781	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
1782	pszFilename, pStreamOps, pvStreamOpsUser,
1783	enmAfter, pfnProgress, pvUser, pfSuspended);
1784	LogFlow(("VMR3Save: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1785	return rc;
1786	}
1787
1788
1789	/**
1790	* Teleport the VM (aka live migration).
1791	*
1792	* @returns VBox status code.
1793	*
1794	* @param pUVM The VM which state should be saved.
1795	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1796	* @param pStreamOps The stream methods.
1797	* @param pvStreamOpsUser The user argument to the stream methods.
1798	* @param pfnProgress Progress callback. Optional.
1799	* @param pvProgressUser User argument for the progress callback.
1800	* @param pfSuspended Set if we suspended the VM.
1801	*
1802	* @thread Non-EMT.
1803	* @vmstate Suspended or Running
1804	* @vmstateto Saving+Suspended or
1805	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1806	*/
1807	VMMR3DECL(int) VMR3Teleport(PUVM pUVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1808	PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1809	{
1810	LogFlow(("VMR3Teleport: pUVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n",
1811	pUVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1812
1813	/*
1814	* Validate input.
1815	*/
1816	AssertPtr(pfSuspended);
1817	*pfSuspended = false;
1818	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1819	PVM pVM = pUVM->pVM;
1820	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1821	VM_ASSERT_OTHER_THREAD(pVM);
1822	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1823	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1824
1825	/*
1826	* Join paths with VMR3Save.
1827	*/
1828	int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime, NULL /pszFilename/, pStreamOps, pvStreamOpsUser,
1829	SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended);
1830	LogFlow(("VMR3Teleport: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1831	return rc;
1832	}
1833
1834
1835
1836	/**
1837	* EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream.
1838	*
1839	* @returns VBox status code.
1840	*
1841	* @param pUVM Pointer to the VM.
1842	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1843	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1844	* @param pvStreamOpsUser The user argument to the stream methods.
1845	* @param pfnProgress Progress callback. Optional.
1846	* @param pvProgressUser User argument for the progress callback.
1847	* @param fTeleporting Indicates whether we're teleporting or not.
1848	*
1849	* @thread EMT.
1850	*/
1851	static DECLCALLBACK(int) vmR3Load(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1852	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1853	{
1854	LogFlow(("vmR3Load: pUVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1855	pUVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1856
1857	/*
1858	* Validate input (paranoia).
1859	*/
1860	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1861	PVM pVM = pUVM->pVM;
1862	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1863	AssertPtrNull(pszFilename);
1864	AssertPtrNull(pStreamOps);
1865	AssertPtrNull(pfnProgress);
1866
1867	/*
1868	* Change the state and perform the load.
1869	*
1870	* Always perform a relocation round afterwards to make sure hypervisor
1871	* selectors and such are correct.
1872	*/
1873	int rc = vmR3TrySetState(pVM, "VMR3Load", 2,
1874	VMSTATE_LOADING, VMSTATE_CREATED,
1875	VMSTATE_LOADING, VMSTATE_SUSPENDED);
1876	if (RT_FAILURE(rc))
1877	return rc;
1878
1879	pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting;
1880
1881	uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pUVM);
1882	rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser);
1883	if (RT_SUCCESS(rc))
1884	{
1885	VMR3Relocate(pVM, 0 /offDelta/);
1886	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING);
1887	}
1888	else
1889	{
1890	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1891	vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING);
1892
1893	if (cErrorsPriorToSave == VMR3GetErrorCount(pUVM))
1894	rc = VMSetError(pVM, rc, RT_SRC_POS,
1895	N_("Unable to restore the virtual machine's saved state from '%s'. "
1896	"It may be damaged or from an older version of VirtualBox. "
1897	"Please discard the saved state before starting the virtual machine"),
1898	pszFilename);
1899	}
1900
1901	return rc;
1902	}
1903
1904
1905	/**
1906	* Loads a VM state into a newly created VM or a one that is suspended.
1907	*
1908	* To restore a saved state on VM startup, call this function and then resume
1909	* the VM instead of powering it on.
1910	*
1911	* @returns VBox status code.
1912	*
1913	* @param pUVM The user mode VM structure.
1914	* @param pszFilename The name of the save state file.
1915	* @param pfnProgress Progress callback. Optional.
1916	* @param pvUser User argument for the progress callback.
1917	*
1918	* @thread Any thread.
1919	* @vmstate Created, Suspended
1920	* @vmstateto Loading+Suspended
1921	*/
1922	VMMR3DECL(int) VMR3LoadFromFile(PUVM pUVM, const char pszFilename, PFNVMPROGRESS pfnProgress, void pvUser)
1923	{
1924	LogFlow(("VMR3LoadFromFile: pUVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n",
1925	pUVM, pszFilename, pszFilename, pfnProgress, pvUser));
1926
1927	/*
1928	* Validate input.
1929	*/
1930	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1931	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1932
1933	/*
1934	* Forward the request to EMT(0). No need to setup a rendezvous here
1935	* since there is no execution taking place when this call is allowed.
1936	*/
1937	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1938	pUVM, pszFilename, (uintptr_t)NULL /pStreamOps/, (uintptr_t)NULL /pvStreamOpsUser/,
1939	pfnProgress, pvUser, false /fTeleporting/);
1940	LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc));
1941	return rc;
1942	}
1943
1944
1945	/**
1946	* VMR3LoadFromFile for arbitrary file streams.
1947	*
1948	* @returns VBox status code.
1949	*
1950	* @param pUVM Pointer to the VM.
1951	* @param pStreamOps The stream methods.
1952	* @param pvStreamOpsUser The user argument to the stream methods.
1953	* @param pfnProgress Progress callback. Optional.
1954	* @param pvProgressUser User argument for the progress callback.
1955	* @param fTeleporting Flag whether this call is part of a teleportation operation.
1956	*
1957	* @thread Any thread.
1958	* @vmstate Created, Suspended
1959	* @vmstateto Loading+Suspended
1960	*/
1961	VMMR3DECL(int) VMR3LoadFromStream(PUVM pUVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1962	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1963	{
1964	LogFlow(("VMR3LoadFromStream: pUVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1965	pUVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1966
1967	/*
1968	* Validate input.
1969	*/
1970	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1971	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1972
1973	/*
1974	* Forward the request to EMT(0). No need to setup a rendezvous here
1975	* since there is no execution taking place when this call is allowed.
1976	*/
1977	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1978	pUVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, pfnProgress,
1979	pvProgressUser, fTeleporting);
1980	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
1981	return rc;
1982	}
1983
1984
1985	/**
1986	* EMT rendezvous worker for VMR3PowerOff.
1987	*
1988	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict
1989	* return code, see FNVMMEMTRENDEZVOUS.)
1990	*
1991	* @param pVM The cross context VM structure.
1992	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1993	* @param pvUser Ignored.
1994	*/
1995	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser)
1996	{
1997	LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1998	Assert(!pvUser); NOREF(pvUser);
1999
2000	/*
2001	* The first EMT thru here will change the state to PoweringOff.
2002	*/
2003	if (pVCpu->idCpu == pVM->cCpus - 1)
2004	{
2005	int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 11,
2006	VMSTATE_POWERING_OFF, VMSTATE_RUNNING, /* 1 */
2007	VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, /* 2 */
2008	VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, /* 3 */
2009	VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, /* 4 */
2010	VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, /* 5 */
2011	VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, /* 6 */
2012	VMSTATE_POWERING_OFF, VMSTATE_CREATED, /* 7 / /* @todo update the diagram! */
2013	VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, /* 8 */
2014	VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, /* 9 */
2015	VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS,/* 10 */
2016	VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); /* 11 */
2017	if (RT_FAILURE(rc))
2018	return rc;
2019	if (rc >= 7)
2020	SSMR3Cancel(pVM->pUVM);
2021	}
2022
2023	/*
2024	* Check the state.
2025	*/
2026	VMSTATE enmVMState = VMR3GetState(pVM);
2027	AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF
2028	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
2029	("%s\n", VMR3GetStateName(enmVMState)),
2030	VERR_VM_INVALID_VM_STATE);
2031
2032	/*
2033	* EMT(0) does the actual power off work here after all the other EMTs
2034	* have been thru and entered the STOPPED state.
2035	*/
2036	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED);
2037	if (pVCpu->idCpu == 0)
2038	{
2039	/*
2040	* For debugging purposes, we will log a summary of the guest state at this point.
2041	*/
2042	if (enmVMState != VMSTATE_GURU_MEDITATION)
2043	{
2044	/** @todo make the state dumping at VMR3PowerOff optional. */
2045	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2046	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2047	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2048	RTLogRelPrintf("***\n");
2049	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2050	RTLogRelPrintf("***\n");
2051	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2052	RTLogRelPrintf("***\n");
2053	DBGFR3Info(pVM->pUVM, "activetimers", NULL, DBGFR3InfoLogRelHlp());
2054	RTLogRelPrintf("***\n");
2055	DBGFR3Info(pVM->pUVM, "gdt", NULL, DBGFR3InfoLogRelHlp());
2056	/** @todo dump guest call stack. */
2057	RTLogRelSetBuffering(fOldBuffered);
2058	RTLogRelPrintf("************ End of Guest state at power off *************\n");
2059	}
2060
2061	/*
2062	* Perform the power off notifications and advance the state to
2063	* Off or OffLS.
2064	*/
2065	PDMR3PowerOff(pVM);
2066	DBGFR3PowerOff(pVM);
2067
2068	PUVM pUVM = pVM->pUVM;
2069	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2070	enmVMState = pVM->enmVMState;
2071	if (enmVMState == VMSTATE_POWERING_OFF_LS)
2072	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS, false /fSetRatherThanClearFF/);
2073	else
2074	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF, false /fSetRatherThanClearFF/);
2075	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2076	}
2077	else if (enmVMState != VMSTATE_GURU_MEDITATION)
2078	{
2079	/** @todo make the state dumping at VMR3PowerOff optional. */
2080	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2081	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2082	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2083	RTLogRelPrintf("***\n");
2084	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2085	RTLogRelPrintf("***\n");
2086	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2087	RTLogRelPrintf("***\n");
2088	RTLogRelSetBuffering(fOldBuffered);
2089	RTLogRelPrintf("************ End of Guest state at power off for VCpu %u *************\n", pVCpu->idCpu);
2090	}
2091
2092	return VINF_EM_OFF;
2093	}
2094
2095
2096	/**
2097	* Power off the VM.
2098	*
2099	* @returns VBox status code. When called on EMT, this will be a strict status
2100	* code that has to be propagated up the call stack.
2101	*
2102	* @param pUVM The handle of the VM to be powered off.
2103	*
2104	* @thread Any thread.
2105	* @vmstate Suspended, Running, Guru Meditation, Load Failure
2106	* @vmstateto Off or OffLS
2107	*/
2108	VMMR3DECL(int) VMR3PowerOff(PUVM pUVM)
2109	{
2110	LogFlow(("VMR3PowerOff: pUVM=%p\n", pUVM));
2111	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2112	PVM pVM = pUVM->pVM;
2113	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2114
2115	/*
2116	* Gather all the EMTs to make sure there are no races before
2117	* changing the VM state.
2118	*/
2119	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2120	vmR3PowerOff, NULL);
2121	LogFlow(("VMR3PowerOff: returns %Rrc\n", rc));
2122	return rc;
2123	}
2124
2125
2126	/**
2127	* Destroys the VM.
2128	*
2129	* The VM must be powered off (or never really powered on) to call this
2130	* function. The VM handle is destroyed and can no longer be used up successful
2131	* return.
2132	*
2133	* @returns VBox status code.
2134	*
2135	* @param pUVM The user mode VM handle.
2136	*
2137	* @thread Any none emulation thread.
2138	* @vmstate Off, Created
2139	* @vmstateto N/A
2140	*/
2141	VMMR3DECL(int) VMR3Destroy(PUVM pUVM)
2142	{
2143	LogFlow(("VMR3Destroy: pUVM=%p\n", pUVM));
2144
2145	/*
2146	* Validate input.
2147	*/
2148	if (!pUVM)
2149	return VERR_INVALID_VM_HANDLE;
2150	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2151	PVM pVM = pUVM->pVM;
2152	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2153	AssertLogRelReturn(!VM_IS_EMT(pVM), VERR_VM_THREAD_IS_EMT);
2154
2155	/*
2156	* Change VM state to destroying and aall vmR3Destroy on each of the EMTs
2157	* ending with EMT(0) doing the bulk of the cleanup.
2158	*/
2159	int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF);
2160	if (RT_FAILURE(rc))
2161	return rc;
2162
2163	rc = VMR3ReqCallWait(pVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM);
2164	AssertLogRelRC(rc);
2165
2166	/*
2167	* Wait for EMTs to quit and destroy the UVM.
2168	*/
2169	vmR3DestroyUVM(pUVM, 30000);
2170
2171	LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n"));
2172	return VINF_SUCCESS;
2173	}
2174
2175
2176	/**
2177	* Internal destruction worker.
2178	*
2179	* This is either called from VMR3Destroy via VMR3ReqCallU or from
2180	* vmR3EmulationThreadWithId when EMT(0) terminates after having called
2181	* VMR3Destroy().
2182	*
2183	* When called on EMT(0), it will performed the great bulk of the destruction.
2184	* When called on the other EMTs, they will do nothing and the whole purpose is
2185	* to return VINF_EM_TERMINATE so they break out of their run loops.
2186	*
2187	* @returns VINF_EM_TERMINATE.
2188	* @param pVM The cross context VM structure.
2189	*/
2190	DECLCALLBACK(int) vmR3Destroy(PVM pVM)
2191	{
2192	PUVM pUVM = pVM->pUVM;
2193	PVMCPU pVCpu = VMMGetCpu(pVM);
2194	Assert(pVCpu);
2195	LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu));
2196
2197	/*
2198	* Only VCPU 0 does the full cleanup (last).
2199	*/
2200	if (pVCpu->idCpu == 0)
2201	{
2202	/*
2203	* Dump statistics to the log.
2204	*/
2205	#if defined(VBOX_WITH_STATISTICS) \|\| defined(LOG_ENABLED)
2206	RTLogFlags(NULL, "nodisabled nobuffered");
2207	#endif
2208	//#ifdef VBOX_WITH_STATISTICS
2209	// STAMR3Dump(pUVM, "*");
2210	//#else
2211	LogRel(("*********************** Statistics ***********************\n"));
2212	STAMR3DumpToReleaseLog(pUVM, "*");
2213	LogRel(("******************* End of statistics ********************\n"));
2214	//#endif
2215
2216	/*
2217	* Destroy the VM components.
2218	*/
2219	int rc = TMR3Term(pVM);
2220	AssertRC(rc);
2221	#ifdef VBOX_WITH_DEBUGGER
2222	rc = DBGCIoTerminate(pUVM, pUVM->vm.s.pvDBGC);
2223	pUVM->vm.s.pvDBGC = NULL;
2224	#endif
2225	AssertRC(rc);
2226	rc = PDMR3Term(pVM);
2227	AssertRC(rc);
2228	rc = GIMR3Term(pVM);
2229	AssertRC(rc);
2230	rc = DBGFR3Term(pVM);
2231	AssertRC(rc);
2232	rc = IEMR3Term(pVM);
2233	AssertRC(rc);
2234	rc = EMR3Term(pVM);
2235	AssertRC(rc);
2236	rc = IOMR3Term(pVM);
2237	AssertRC(rc);
2238	rc = TRPMR3Term(pVM);
2239	AssertRC(rc);
2240	#if !defined(VBOX_VMM_TARGET_ARMV8)
2241	rc = SELMR3Term(pVM);
2242	AssertRC(rc);
2243	#endif
2244	rc = HMR3Term(pVM);
2245	AssertRC(rc);
2246	rc = NEMR3Term(pVM);
2247	AssertRC(rc);
2248	rc = PGMR3Term(pVM);
2249	AssertRC(rc);
2250	rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */
2251	AssertRC(rc);
2252	rc = CPUMR3Term(pVM);
2253	AssertRC(rc);
2254	SSMR3Term(pVM);
2255	rc = PDMR3CritSectBothTerm(pVM);
2256	AssertRC(rc);
2257	rc = MMR3Term(pVM);
2258	AssertRC(rc);
2259
2260	/*
2261	* We're done, tell the other EMTs to quit.
2262	*/
2263	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2264	ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2265	LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE));
2266	}
2267
2268	/*
2269	* Decrement the active EMT count here.
2270	*/
2271	PUVMCPU pUVCpu = &pUVM->aCpus[pVCpu->idCpu];
2272	if (!pUVCpu->vm.s.fBeenThruVmDestroy)
2273	{
2274	pUVCpu->vm.s.fBeenThruVmDestroy = true;
2275	ASMAtomicDecU32(&pUVM->vm.s.cActiveEmts);
2276	}
2277	else
2278	AssertFailed();
2279
2280	return VINF_EM_TERMINATE;
2281	}
2282
2283
2284	/**
2285	* Destroys the UVM portion.
2286	*
2287	* This is called as the final step in the VM destruction or as the cleanup
2288	* in case of a creation failure.
2289	*
2290	* @param pUVM The user mode VM structure.
2291	* @param cMilliesEMTWait The number of milliseconds to wait for the emulation
2292	* threads.
2293	*/
2294	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait)
2295	{
2296	/*
2297	* Signal termination of each the emulation threads and
2298	* wait for them to complete.
2299	*/
2300	/* Signal them - in reverse order since EMT(0) waits for the others. */
2301	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2302	if (pUVM->pVM)
2303	VM_FF_SET(pUVM->pVM, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2304	VMCPUID iCpu = pUVM->cCpus;
2305	while (iCpu-- > 0)
2306	{
2307	VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
2308	RTSemEventSignal(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2309	}
2310
2311	/* Wait for EMT(0), it in turn waits for the rest. */
2312	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2313
2314	RTTHREAD const hSelf = RTThreadSelf();
2315	RTTHREAD hThread = pUVM->aCpus[0].vm.s.ThreadEMT;
2316	if ( hThread != NIL_RTTHREAD
2317	&& hThread != hSelf)
2318	{
2319	int rc2 = RTThreadWait(hThread, RT_MAX(cMilliesEMTWait, 2000), NULL);
2320	if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */
2321	rc2 = RTThreadWait(hThread, 1000, NULL);
2322	AssertLogRelMsgRC(rc2, ("iCpu=0 rc=%Rrc\n", rc2));
2323	if (RT_SUCCESS(rc2))
2324	pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD;
2325	}
2326
2327	/* Just in case we're in a weird failure situation w/o EMT(0) to do the
2328	waiting, wait the other EMTs too. */
2329	for (iCpu = 1; iCpu < pUVM->cCpus; iCpu++)
2330	{
2331	ASMAtomicXchgHandle(&pUVM->aCpus[iCpu].vm.s.ThreadEMT, NIL_RTTHREAD, &hThread);
2332	if (hThread != NIL_RTTHREAD)
2333	{
2334	if (hThread != hSelf)
2335	{
2336	int rc2 = RTThreadWait(hThread, 250 /ms/, NULL);
2337	AssertLogRelMsgRC(rc2, ("iCpu=%u rc=%Rrc\n", iCpu, rc2));
2338	if (RT_SUCCESS(rc2))
2339	continue;
2340	}
2341	pUVM->aCpus[iCpu].vm.s.ThreadEMT = hThread;
2342	}
2343	}
2344
2345	/* Cleanup the semaphores. */
2346	iCpu = pUVM->cCpus;
2347	while (iCpu-- > 0)
2348	{
2349	RTSemEventDestroy(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2350	pUVM->aCpus[iCpu].vm.s.EventSemWait = NIL_RTSEMEVENT;
2351	}
2352
2353	/*
2354	* Free the event semaphores associated with the request packets.
2355	*/
2356	unsigned cReqs = 0;
2357	for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++)
2358	{
2359	PVMREQ pReq = pUVM->vm.s.apReqFree[i];
2360	pUVM->vm.s.apReqFree[i] = NULL;
2361	for (; pReq; pReq = pReq->pNext, cReqs++)
2362	{
2363	pReq->enmState = VMREQSTATE_INVALID;
2364	RTSemEventDestroy(pReq->EventSem);
2365	}
2366	}
2367	Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs);
2368
2369	/*
2370	* Kill all queued requests. (There really shouldn't be any!)
2371	*/
2372	for (unsigned i = 0; i < 10; i++)
2373	{
2374	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pPriorityReqs, NULL, PVMREQ);
2375	if (!pReqHead)
2376	{
2377	pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pNormalReqs, NULL, PVMREQ);
2378	if (!pReqHead)
2379	break;
2380	}
2381	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2382
2383	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2384	{
2385	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2386	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2387	RTSemEventSignal(pReq->EventSem);
2388	RTThreadSleep(2);
2389	RTSemEventDestroy(pReq->EventSem);
2390	}
2391	/* give them a chance to respond before we free the request memory. */
2392	RTThreadSleep(32);
2393	}
2394
2395	/*
2396	* Now all queued VCPU requests (again, there shouldn't be any).
2397	*/
2398	for (VMCPUID idCpu = 0; idCpu < pUVM->cCpus; idCpu++)
2399	{
2400	PUVMCPU pUVCpu = &pUVM->aCpus[idCpu];
2401
2402	for (unsigned i = 0; i < 10; i++)
2403	{
2404	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pPriorityReqs, NULL, PVMREQ);
2405	if (!pReqHead)
2406	{
2407	pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pNormalReqs, NULL, PVMREQ);
2408	if (!pReqHead)
2409	break;
2410	}
2411	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2412
2413	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2414	{
2415	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2416	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2417	RTSemEventSignal(pReq->EventSem);
2418	RTThreadSleep(2);
2419	RTSemEventDestroy(pReq->EventSem);
2420	}
2421	/* give them a chance to respond before we free the request memory. */
2422	RTThreadSleep(32);
2423	}
2424	}
2425
2426	/*
2427	* Make sure the VMMR0.r0 module and whatever else is unloaded.
2428	*/
2429	PDMR3TermUVM(pUVM);
2430
2431	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
2432	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
2433
2434	/*
2435	* Terminate the support library if initialized.
2436	*/
2437	if (pUVM->vm.s.pSession)
2438	{
2439	int rc = SUPR3Term(false /fForced/);
2440	AssertRC(rc);
2441	pUVM->vm.s.pSession = NIL_RTR0PTR;
2442	}
2443
2444	/*
2445	* Release the UVM structure reference.
2446	*/
2447	VMR3ReleaseUVM(pUVM);
2448
2449	/*
2450	* Clean up and flush logs.
2451	*/
2452	RTLogFlush(NULL);
2453	}
2454
2455
2456	/**
2457	* Worker which checks integrity of some internal structures.
2458	* This is yet another attempt to track down that AVL tree crash.
2459	*/
2460	static void vmR3CheckIntegrity(PVM pVM)
2461	{
2462	#ifdef VBOX_STRICT
2463	int rc = PGMR3CheckIntegrity(pVM);
2464	AssertReleaseRC(rc);
2465	#else
2466	RT_NOREF_PV(pVM);
2467	#endif
2468	}
2469
2470
2471	/**
2472	* EMT rendezvous worker for VMR3ResetFF for doing soft/warm reset.
2473	*
2474	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESCHEDULE.
2475	* (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
2476	*
2477	* @param pVM The cross context VM structure.
2478	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2479	* @param pvUser The reset flags.
2480	*/
2481	static DECLCALLBACK(VBOXSTRICTRC) vmR3SoftReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2482	{
2483	uint32_t fResetFlags = (uint32_t )pvUser;
2484
2485
2486	/*
2487	* The first EMT will try change the state to resetting. If this fails,
2488	* we won't get called for the other EMTs.
2489	*/
2490	if (pVCpu->idCpu == pVM->cCpus - 1)
2491	{
2492	int rc = vmR3TrySetState(pVM, "vmR3ResetSoft", 3,
2493	VMSTATE_SOFT_RESETTING, VMSTATE_RUNNING,
2494	VMSTATE_SOFT_RESETTING, VMSTATE_SUSPENDED,
2495	VMSTATE_SOFT_RESETTING_LS, VMSTATE_RUNNING_LS);
2496	if (RT_FAILURE(rc))
2497	return rc;
2498	pVM->vm.s.cResets++;
2499	pVM->vm.s.cSoftResets++;
2500	}
2501
2502	/*
2503	* Check the state.
2504	*/
2505	VMSTATE enmVMState = VMR3GetState(pVM);
2506	AssertLogRelMsgReturn( enmVMState == VMSTATE_SOFT_RESETTING
2507	\|\| enmVMState == VMSTATE_SOFT_RESETTING_LS,
2508	("%s\n", VMR3GetStateName(enmVMState)),
2509	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2510
2511	/*
2512	* EMT(0) does the full cleanup after all the other EMTs has been
2513	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2514	*
2515	* Because there are per-cpu reset routines and order may/is important,
2516	* the following sequence looks a bit ugly...
2517	*/
2518
2519	/* Reset the VCpu state. */
2520	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2521
2522	/*
2523	* Soft reset the VM components.
2524	*/
2525	if (pVCpu->idCpu == 0)
2526	{
2527	PDMR3SoftReset(pVM, fResetFlags);
2528	TRPMR3Reset(pVM);
2529	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2530	EMR3Reset(pVM);
2531	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2532	NEMR3Reset(pVM);
2533
2534	/*
2535	* Since EMT(0) is the last to go thru here, it will advance the state.
2536	* (Unlike vmR3HardReset we won't be doing any suspending of live
2537	* migration VMs here since memory is unchanged.)
2538	*/
2539	PUVM pUVM = pVM->pUVM;
2540	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2541	enmVMState = pVM->enmVMState;
2542	if (enmVMState == VMSTATE_SOFT_RESETTING)
2543	{
2544	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2545	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2546	else
2547	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2548	}
2549	else
2550	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING_LS, VMSTATE_SOFT_RESETTING_LS, false /fSetRatherThanClearFF/);
2551	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2552	}
2553
2554	return VINF_EM_RESCHEDULE;
2555	}
2556
2557
2558	/**
2559	* EMT rendezvous worker for VMR3Reset and VMR3ResetFF.
2560	*
2561	* This is called by the emulation threads as a response to the reset request
2562	* issued by VMR3Reset().
2563	*
2564	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This
2565	* is a strict return code, see FNVMMEMTRENDEZVOUS.)
2566	*
2567	* @param pVM The cross context VM structure.
2568	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2569	* @param pvUser Ignored.
2570	*/
2571	static DECLCALLBACK(VBOXSTRICTRC) vmR3HardReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2572	{
2573	Assert(!pvUser); NOREF(pvUser);
2574
2575	/*
2576	* The first EMT will try change the state to resetting. If this fails,
2577	* we won't get called for the other EMTs.
2578	*/
2579	if (pVCpu->idCpu == pVM->cCpus - 1)
2580	{
2581	int rc = vmR3TrySetState(pVM, "vmR3HardReset", 3,
2582	VMSTATE_RESETTING, VMSTATE_RUNNING,
2583	VMSTATE_RESETTING, VMSTATE_SUSPENDED,
2584	VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS);
2585	if (RT_FAILURE(rc))
2586	return rc;
2587	pVM->vm.s.cResets++;
2588	pVM->vm.s.cHardResets++;
2589	}
2590
2591	/*
2592	* Check the state.
2593	*/
2594	VMSTATE enmVMState = VMR3GetState(pVM);
2595	AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING
2596	\|\| enmVMState == VMSTATE_RESETTING_LS,
2597	("%s\n", VMR3GetStateName(enmVMState)),
2598	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2599
2600	/*
2601	* EMT(0) does the full cleanup after all the other EMTs has been
2602	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2603	*
2604	* Because there are per-cpu reset routines and order may/is important,
2605	* the following sequence looks a bit ugly...
2606	*/
2607	if (pVCpu->idCpu == 0)
2608	vmR3CheckIntegrity(pVM);
2609
2610	/* Reset the VCpu state. */
2611	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2612
2613	/* Clear all pending forced actions. */
2614	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST);
2615
2616	/*
2617	* Reset the VM components.
2618	*/
2619	if (pVCpu->idCpu == 0)
2620	{
2621	GIMR3Reset(pVM); /* This must come before PDM and TM. */
2622	PDMR3Reset(pVM);
2623	PGMR3Reset(pVM);
2624	#if !defined(VBOX_VMM_TARGET_ARMV8)
2625	SELMR3Reset(pVM);
2626	#endif
2627	TRPMR3Reset(pVM);
2628	IOMR3Reset(pVM);
2629	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2630	TMR3Reset(pVM);
2631	EMR3Reset(pVM);
2632	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2633	NEMR3Reset(pVM);
2634
2635	/*
2636	* Do memory setup.
2637	*/
2638	PGMR3MemSetup(pVM, true /fAtReset/);
2639	PDMR3MemSetup(pVM, true /fAtReset/);
2640
2641	/*
2642	* Since EMT(0) is the last to go thru here, it will advance the state.
2643	* When a live save is active, we will move on to SuspendingLS but
2644	* leave it for VMR3Reset to do the actual suspending due to deadlock risks.
2645	*/
2646	PUVM pUVM = pVM->pUVM;
2647	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2648	enmVMState = pVM->enmVMState;
2649	if (enmVMState == VMSTATE_RESETTING)
2650	{
2651	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2652	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2653	else
2654	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2655	}
2656	else
2657	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS, false /fSetRatherThanClearFF/);
2658	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2659
2660	vmR3CheckIntegrity(pVM);
2661
2662	/*
2663	* Do the suspend bit as well.
2664	* It only requires some EMT(0) work at present.
2665	*/
2666	if (enmVMState != VMSTATE_RESETTING)
2667	{
2668	vmR3SuspendDoWork(pVM);
2669	vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
2670	}
2671	}
2672
2673	return enmVMState == VMSTATE_RESETTING
2674	? VINF_EM_RESET
2675	: 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. */
2676	}
2677
2678
2679	/**
2680	* Internal worker for VMR3Reset, VMR3ResetFF, VMR3TripleFault.
2681	*
2682	* @returns VBox status code.
2683	* @param pVM The cross context VM structure.
2684	* @param fHardReset Whether it's a hard reset or not.
2685	* @param fResetFlags The reset flags (PDMVMRESET_F_XXX).
2686	*/
2687	static VBOXSTRICTRC vmR3ResetCommon(PVM pVM, bool fHardReset, uint32_t fResetFlags)
2688	{
2689	LogFlow(("vmR3ResetCommon: fHardReset=%RTbool fResetFlags=%#x\n", fHardReset, fResetFlags));
2690	int rc;
2691	if (fHardReset)
2692	{
2693	/*
2694	* Hard reset.
2695	*/
2696	/* Check whether we're supposed to power off instead of resetting. */
2697	if (pVM->vm.s.fPowerOffInsteadOfReset)
2698	{
2699	PUVM pUVM = pVM->pUVM;
2700	if ( pUVM->pVmm2UserMethods
2701	&& pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff)
2702	pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff(pUVM->pVmm2UserMethods, pUVM);
2703	return VMR3PowerOff(pUVM);
2704	}
2705
2706	/* Gather all the EMTs to make sure there are no races before changing
2707	the VM state. */
2708	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2709	vmR3HardReset, NULL);
2710	}
2711	else
2712	{
2713	/*
2714	* Soft reset. Since we only support this with a single CPU active,
2715	* we must be on EMT #0 here.
2716	*/
2717	VM_ASSERT_EMT0(pVM);
2718	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2719	vmR3SoftReset, &fResetFlags);
2720	}
2721
2722	LogFlow(("vmR3ResetCommon: returns %Rrc\n", rc));
2723	return rc;
2724	}
2725
2726
2727
2728	/**
2729	* Reset the current VM.
2730	*
2731	* @returns VBox status code.
2732	* @param pUVM The VM to reset.
2733	*/
2734	VMMR3DECL(int) VMR3Reset(PUVM pUVM)
2735	{
2736	LogFlow(("VMR3Reset:\n"));
2737	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2738	PVM pVM = pUVM->pVM;
2739	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2740
2741	return VBOXSTRICTRC_VAL(vmR3ResetCommon(pVM, true, 0));
2742	}
2743
2744
2745	/**
2746	* Handle the reset force flag or triple fault.
2747	*
2748	* This handles both soft and hard resets (see PDMVMRESET_F_XXX).
2749	*
2750	* @returns VBox status code.
2751	* @param pVM The cross context VM structure.
2752	* @thread EMT
2753	*
2754	* @remarks Caller is expected to clear the VM_FF_RESET force flag.
2755	*/
2756	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetFF(PVM pVM)
2757	{
2758	LogFlow(("VMR3ResetFF:\n"));
2759
2760	/*
2761	* First consult the firmware on whether this is a hard or soft reset.
2762	*/
2763	uint32_t fResetFlags;
2764	bool fHardReset = PDMR3GetResetInfo(pVM, 0 /fOverride/, &fResetFlags);
2765	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
2766	}
2767
2768
2769	/**
2770	* For handling a CPU reset on triple fault.
2771	*
2772	* According to one mainboard manual, a CPU triple fault causes the 286 CPU to
2773	* send a SHUTDOWN signal to the chipset. The chipset responds by sending a
2774	* RESET signal to the CPU. So, it should be very similar to a soft/warm reset.
2775	*
2776	* @returns VBox status code.
2777	* @param pVM The cross context VM structure.
2778	* @thread EMT
2779	*/
2780	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetTripleFault(PVM pVM)
2781	{
2782	LogFlow(("VMR3ResetTripleFault:\n"));
2783
2784	/*
2785	* First consult the firmware on whether this is a hard or soft reset.
2786	*/
2787	uint32_t fResetFlags;
2788	bool fHardReset = PDMR3GetResetInfo(pVM, PDMVMRESET_F_TRIPLE_FAULT, &fResetFlags);
2789	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
2790	}
2791
2792
2793	/**
2794	* Gets the user mode VM structure pointer given Pointer to the VM.
2795	*
2796	* @returns Pointer to the user mode VM structure on success. NULL if @a pVM is
2797	* invalid (asserted).
2798	* @param pVM The cross context VM structure.
2799	* @sa VMR3GetVM, VMR3RetainUVM
2800	*/
2801	VMMR3DECL(PUVM) VMR3GetUVM(PVM pVM)
2802	{
2803	VM_ASSERT_VALID_EXT_RETURN(pVM, NULL);
2804	return pVM->pUVM;
2805	}
2806
2807
2808	/**
2809	* Gets the shared VM structure pointer given the pointer to the user mode VM
2810	* structure.
2811	*
2812	* @returns Pointer to the VM.
2813	* NULL if @a pUVM is invalid (asserted) or if no shared VM structure
2814	* is currently associated with it.
2815	* @param pUVM The user mode VM handle.
2816	* @sa VMR3GetUVM
2817	*/
2818	VMMR3DECL(PVM) VMR3GetVM(PUVM pUVM)
2819	{
2820	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2821	return pUVM->pVM;
2822	}
2823
2824
2825	/**
2826	* Retain the user mode VM handle.
2827	*
2828	* @returns Reference count.
2829	* UINT32_MAX if @a pUVM is invalid.
2830	*
2831	* @param pUVM The user mode VM handle.
2832	* @sa VMR3ReleaseUVM
2833	*/
2834	VMMR3DECL(uint32_t) VMR3RetainUVM(PUVM pUVM)
2835	{
2836	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
2837	uint32_t cRefs = ASMAtomicIncU32(&pUVM->vm.s.cUvmRefs);
2838	AssertMsg(cRefs > 0 && cRefs < _64K, ("%u\n", cRefs));
2839	return cRefs;
2840	}
2841
2842
2843	/**
2844	* Does the final release of the UVM structure.
2845	*
2846	* @param pUVM The user mode VM handle.
2847	*/
2848	static void vmR3DoReleaseUVM(PUVM pUVM)
2849	{
2850	/*
2851	* Free the UVM.
2852	*/
2853	Assert(!pUVM->pVM);
2854
2855	MMR3HeapFree(pUVM->vm.s.pszName);
2856	pUVM->vm.s.pszName = NULL;
2857
2858	MMR3TermUVM(pUVM);
2859	STAMR3TermUVM(pUVM);
2860
2861	ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX);
2862	RTTlsFree(pUVM->vm.s.idxTLS);
2863	RTMemPageFree(pUVM, RT_UOFFSETOF_DYN(UVM, aCpus[pUVM->cCpus]));
2864	}
2865
2866
2867	/**
2868	* Releases a refernece to the mode VM handle.
2869	*
2870	* @returns The new reference count, 0 if destroyed.
2871	* UINT32_MAX if @a pUVM is invalid.
2872	*
2873	* @param pUVM The user mode VM handle.
2874	* @sa VMR3RetainUVM
2875	*/
2876	VMMR3DECL(uint32_t) VMR3ReleaseUVM(PUVM pUVM)
2877	{
2878	if (!pUVM)
2879	return 0;
2880	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
2881	uint32_t cRefs = ASMAtomicDecU32(&pUVM->vm.s.cUvmRefs);
2882	if (!cRefs)
2883	vmR3DoReleaseUVM(pUVM);
2884	else
2885	AssertMsg(cRefs < _64K, ("%u\n", cRefs));
2886	return cRefs;
2887	}
2888
2889
2890	/**
2891	* Gets the VM name.
2892	*
2893	* @returns Pointer to a read-only string containing the name. NULL if called
2894	* too early.
2895	* @param pUVM The user mode VM handle.
2896	*/
2897	VMMR3DECL(const char *) VMR3GetName(PUVM pUVM)
2898	{
2899	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2900	return pUVM->vm.s.pszName;
2901	}
2902
2903
2904	/**
2905	* Gets the VM UUID.
2906	*
2907	* @returns pUuid on success, NULL on failure.
2908	* @param pUVM The user mode VM handle.
2909	* @param pUuid Where to store the UUID.
2910	*/
2911	VMMR3DECL(PRTUUID) VMR3GetUuid(PUVM pUVM, PRTUUID pUuid)
2912	{
2913	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2914	AssertPtrReturn(pUuid, NULL);
2915
2916	*pUuid = pUVM->vm.s.Uuid;
2917	return pUuid;
2918	}
2919
2920
2921	/**
2922	* Gets the current VM state.
2923	*
2924	* @returns The current VM state.
2925	* @param pVM The cross context VM structure.
2926	* @thread Any
2927	*/
2928	VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM)
2929	{
2930	AssertMsgReturn(RT_VALID_ALIGNED_PTR(pVM, HOST_PAGE_SIZE), ("%p\n", pVM), VMSTATE_TERMINATED);
2931	VMSTATE enmVMState = pVM->enmVMState;
2932	return enmVMState >= VMSTATE_CREATING && enmVMState <= VMSTATE_TERMINATED ? enmVMState : VMSTATE_TERMINATED;
2933	}
2934
2935
2936	/**
2937	* Gets the current VM state.
2938	*
2939	* @returns The current VM state.
2940	* @param pUVM The user-mode VM handle.
2941	* @thread Any
2942	*/
2943	VMMR3DECL(VMSTATE) VMR3GetStateU(PUVM pUVM)
2944	{
2945	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSTATE_TERMINATED);
2946	if (RT_UNLIKELY(!pUVM->pVM))
2947	return VMSTATE_TERMINATED;
2948	return pUVM->pVM->enmVMState;
2949	}
2950
2951
2952	/**
2953	* Gets the state name string for a VM state.
2954	*
2955	* @returns Pointer to the state name. (readonly)
2956	* @param enmState The state.
2957	*/
2958	VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState)
2959	{
2960	switch (enmState)
2961	{
2962	case VMSTATE_CREATING: return "CREATING";
2963	case VMSTATE_CREATED: return "CREATED";
2964	case VMSTATE_LOADING: return "LOADING";
2965	case VMSTATE_POWERING_ON: return "POWERING_ON";
2966	case VMSTATE_RESUMING: return "RESUMING";
2967	case VMSTATE_RUNNING: return "RUNNING";
2968	case VMSTATE_RUNNING_LS: return "RUNNING_LS";
2969	case VMSTATE_RESETTING: return "RESETTING";
2970	case VMSTATE_RESETTING_LS: return "RESETTING_LS";
2971	case VMSTATE_SOFT_RESETTING: return "SOFT_RESETTING";
2972	case VMSTATE_SOFT_RESETTING_LS: return "SOFT_RESETTING_LS";
2973	case VMSTATE_SUSPENDED: return "SUSPENDED";
2974	case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS";
2975	case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS";
2976	case VMSTATE_SUSPENDING: return "SUSPENDING";
2977	case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS";
2978	case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS";
2979	case VMSTATE_SAVING: return "SAVING";
2980	case VMSTATE_DEBUGGING: return "DEBUGGING";
2981	case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS";
2982	case VMSTATE_POWERING_OFF: return "POWERING_OFF";
2983	case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS";
2984	case VMSTATE_FATAL_ERROR: return "FATAL_ERROR";
2985	case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS";
2986	case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION";
2987	case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS";
2988	case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE";
2989	case VMSTATE_OFF: return "OFF";
2990	case VMSTATE_OFF_LS: return "OFF_LS";
2991	case VMSTATE_DESTROYING: return "DESTROYING";
2992	case VMSTATE_TERMINATED: return "TERMINATED";
2993
2994	default:
2995	AssertMsgFailed(("Unknown state %d\n", enmState));
2996	return "Unknown!\n";
2997	}
2998	}
2999
3000
3001	/**
3002	* Validates the state transition in strict builds.
3003	*
3004	* @returns true if valid, false if not.
3005	*
3006	* @param enmStateOld The old (current) state.
3007	* @param enmStateNew The proposed new state.
3008	*
3009	* @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE
3010	* diagram (under State Machine Diagram).
3011	*/
3012	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew)
3013	{
3014	#ifndef VBOX_STRICT
3015	RT_NOREF2(enmStateOld, enmStateNew);
3016	#else
3017	switch (enmStateOld)
3018	{
3019	case VMSTATE_CREATING:
3020	AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3021	break;
3022
3023	case VMSTATE_CREATED:
3024	AssertMsgReturn( enmStateNew == VMSTATE_LOADING
3025	\|\| enmStateNew == VMSTATE_POWERING_ON
3026	\|\| enmStateNew == VMSTATE_POWERING_OFF
3027	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3028	break;
3029
3030	case VMSTATE_LOADING:
3031	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3032	\|\| enmStateNew == VMSTATE_LOAD_FAILURE
3033	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3034	break;
3035
3036	case VMSTATE_POWERING_ON:
3037	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3038	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3039	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3040	break;
3041
3042	case VMSTATE_RESUMING:
3043	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3044	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3045	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3046	break;
3047
3048	case VMSTATE_RUNNING:
3049	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3050	\|\| enmStateNew == VMSTATE_SUSPENDING
3051	\|\| enmStateNew == VMSTATE_RESETTING
3052	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3053	\|\| enmStateNew == VMSTATE_RUNNING_LS
3054	\|\| enmStateNew == VMSTATE_DEBUGGING
3055	\|\| enmStateNew == VMSTATE_FATAL_ERROR
3056	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
3057	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3058	break;
3059
3060	case VMSTATE_RUNNING_LS:
3061	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS
3062	\|\| enmStateNew == VMSTATE_SUSPENDING_LS
3063	\|\| enmStateNew == VMSTATE_SUSPENDING_EXT_LS
3064	\|\| enmStateNew == VMSTATE_RESETTING_LS
3065	\|\| enmStateNew == VMSTATE_SOFT_RESETTING_LS
3066	\|\| enmStateNew == VMSTATE_RUNNING
3067	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3068	\|\| enmStateNew == VMSTATE_FATAL_ERROR_LS
3069	\|\| enmStateNew == VMSTATE_GURU_MEDITATION_LS
3070	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3071	break;
3072
3073	case VMSTATE_RESETTING:
3074	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3075	break;
3076
3077	case VMSTATE_SOFT_RESETTING:
3078	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3079	break;
3080
3081	case VMSTATE_RESETTING_LS:
3082	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS
3083	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3084	break;
3085
3086	case VMSTATE_SOFT_RESETTING_LS:
3087	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING_LS
3088	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3089	break;
3090
3091	case VMSTATE_SUSPENDING:
3092	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3093	break;
3094
3095	case VMSTATE_SUSPENDING_LS:
3096	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3097	\|\| enmStateNew == VMSTATE_SUSPENDED_LS
3098	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3099	break;
3100
3101	case VMSTATE_SUSPENDING_EXT_LS:
3102	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3103	\|\| enmStateNew == VMSTATE_SUSPENDED_EXT_LS
3104	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3105	break;
3106
3107	case VMSTATE_SUSPENDED:
3108	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3109	\|\| enmStateNew == VMSTATE_SAVING
3110	\|\| enmStateNew == VMSTATE_RESETTING
3111	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3112	\|\| enmStateNew == VMSTATE_RESUMING
3113	\|\| enmStateNew == VMSTATE_LOADING
3114	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3115	break;
3116
3117	case VMSTATE_SUSPENDED_LS:
3118	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3119	\|\| enmStateNew == VMSTATE_SAVING
3120	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3121	break;
3122
3123	case VMSTATE_SUSPENDED_EXT_LS:
3124	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3125	\|\| enmStateNew == VMSTATE_SAVING
3126	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3127	break;
3128
3129	case VMSTATE_SAVING:
3130	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3131	break;
3132
3133	case VMSTATE_DEBUGGING:
3134	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3135	\|\| enmStateNew == VMSTATE_POWERING_OFF
3136	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3137	break;
3138
3139	case VMSTATE_DEBUGGING_LS:
3140	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3141	\|\| enmStateNew == VMSTATE_RUNNING_LS
3142	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3143	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3144	break;
3145
3146	case VMSTATE_POWERING_OFF:
3147	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3148	break;
3149
3150	case VMSTATE_POWERING_OFF_LS:
3151	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3152	\|\| enmStateNew == VMSTATE_OFF_LS
3153	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3154	break;
3155
3156	case VMSTATE_OFF:
3157	AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3158	break;
3159
3160	case VMSTATE_OFF_LS:
3161	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3162	break;
3163
3164	case VMSTATE_FATAL_ERROR:
3165	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3166	break;
3167
3168	case VMSTATE_FATAL_ERROR_LS:
3169	AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR
3170	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3171	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3172	break;
3173
3174	case VMSTATE_GURU_MEDITATION:
3175	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3176	\|\| enmStateNew == VMSTATE_POWERING_OFF
3177	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3178	break;
3179
3180	case VMSTATE_GURU_MEDITATION_LS:
3181	AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION
3182	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3183	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3184	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3185	break;
3186
3187	case VMSTATE_LOAD_FAILURE:
3188	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3189	break;
3190
3191	case VMSTATE_DESTROYING:
3192	AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3193	break;
3194
3195	case VMSTATE_TERMINATED:
3196	default:
3197	AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3198	break;
3199	}
3200	#endif /* VBOX_STRICT */
3201	return true;
3202	}
3203
3204
3205	/**
3206	* Does the state change callouts.
3207	*
3208	* The caller owns the AtStateCritSect.
3209	*
3210	* @param pVM The cross context VM structure.
3211	* @param pUVM The UVM handle.
3212	* @param enmStateNew The New state.
3213	* @param enmStateOld The old state.
3214	*/
3215	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3216	{
3217	LogRel(("Changing the VM state from '%s' to '%s'\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3218
3219	for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext)
3220	{
3221	pCur->pfnAtState(pUVM, VMMR3GetVTable(), enmStateNew, enmStateOld, pCur->pvUser);
3222	if ( enmStateNew != VMSTATE_DESTROYING
3223	&& pVM->enmVMState == VMSTATE_DESTROYING)
3224	break;
3225	AssertMsg(pVM->enmVMState == enmStateNew,
3226	("You are not allowed to change the state while in the change callback, except "
3227	"from destroying the VM. There are restrictions in the way the state changes "
3228	"are propagated up to the EM execution loop and it makes the program flow very "
3229	"difficult to follow. (%s, expected %s, old %s)\n",
3230	VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew),
3231	VMR3GetStateName(enmStateOld)));
3232	}
3233	}
3234
3235
3236	/**
3237	* Sets the current VM state, with the AtStatCritSect already entered.
3238	*
3239	* @param pVM The cross context VM structure.
3240	* @param pUVM The UVM handle.
3241	* @param enmStateNew The new state.
3242	* @param enmStateOld The old state.
3243	* @param fSetRatherThanClearFF The usual behavior is to clear the
3244	* VM_FF_CHECK_VM_STATE force flag, but for
3245	* some transitions (-> guru) we need to kick
3246	* the other EMTs to stop what they're doing.
3247	*/
3248	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF)
3249	{
3250	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3251
3252	AssertMsg(pVM->enmVMState == enmStateOld,
3253	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3254
3255	pUVM->vm.s.enmPrevVMState = enmStateOld;
3256	pVM->enmVMState = enmStateNew;
3257
3258	if (!fSetRatherThanClearFF)
3259	VM_FF_CLEAR(pVM, VM_FF_CHECK_VM_STATE);
3260	else if (pVM->cCpus > 0)
3261	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
3262
3263	vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld);
3264	}
3265
3266
3267	/**
3268	* Sets the current VM state.
3269	*
3270	* @param pVM The cross context VM structure.
3271	* @param enmStateNew The new state.
3272	* @param enmStateOld The old state (for asserting only).
3273	*/
3274	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3275	{
3276	PUVM pUVM = pVM->pUVM;
3277	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3278
3279	RT_NOREF_PV(enmStateOld);
3280	AssertMsg(pVM->enmVMState == enmStateOld,
3281	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3282	vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState, false /fSetRatherThanClearFF/);
3283
3284	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3285	}
3286
3287
3288	/**
3289	* Tries to perform a state transition.
3290	*
3291	* @returns The 1-based ordinal of the succeeding transition.
3292	* VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure.
3293	*
3294	* @param pVM The cross context VM structure.
3295	* @param pszWho Who is trying to change it.
3296	* @param cTransitions The number of transitions in the ellipsis.
3297	* @param ... Transition pairs; new, old.
3298	*/
3299	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...)
3300	{
3301	va_list va;
3302	VMSTATE enmStateNew = VMSTATE_CREATED;
3303	VMSTATE enmStateOld = VMSTATE_CREATED;
3304
3305	#ifdef VBOX_STRICT
3306	/*
3307	* Validate the input first.
3308	*/
3309	va_start(va, cTransitions);
3310	for (unsigned i = 0; i < cTransitions; i++)
3311	{
3312	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3313	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3314	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3315	}
3316	va_end(va);
3317	#endif
3318
3319	/*
3320	* Grab the lock and see if any of the proposed transitions works out.
3321	*/
3322	va_start(va, cTransitions);
3323	int rc = VERR_VM_INVALID_VM_STATE;
3324	PUVM pUVM = pVM->pUVM;
3325	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3326
3327	VMSTATE enmStateCur = pVM->enmVMState;
3328
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	if (enmStateCur == enmStateOld)
3334	{
3335	vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld, false /fSetRatherThanClearFF/);
3336	rc = i + 1;
3337	break;
3338	}
3339	}
3340
3341	if (RT_FAILURE(rc))
3342	{
3343	/*
3344	* Complain about it.
3345	*/
3346	const char * const pszStateCur = VMR3GetStateName(enmStateCur);
3347	if (cTransitions == 1)
3348	{
3349	LogRel(("%s: %s -> %s failed, because the VM state is actually %s!\n",
3350	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), pszStateCur));
3351	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS, N_("%s failed because the VM state is %s instead of %s"),
3352	pszWho, pszStateCur, VMR3GetStateName(enmStateOld));
3353	AssertMsgFailed(("%s: %s -> %s failed, because the VM state is actually %s\n",
3354	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), pszStateCur));
3355	}
3356	else
3357	{
3358	char szTransitions[4096];
3359	size_t cchTransitions = 0;
3360	szTransitions[0] = '\0';
3361	va_end(va);
3362	va_start(va, cTransitions);
3363	for (unsigned i = 0; i < cTransitions; i++)
3364	{
3365	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3366	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3367	const char * const pszStateNew = VMR3GetStateName(enmStateNew);
3368	const char * const pszStateOld = VMR3GetStateName(enmStateOld);
3369	LogRel(("%s%s -> %s", i ? ", " : " ", pszStateOld, pszStateNew));
3370	cchTransitions += RTStrPrintf(&szTransitions[cchTransitions], sizeof(szTransitions) - cchTransitions,
3371	"%s%s -> %s", i ? ", " : " ", pszStateOld, pszStateNew);
3372	}
3373	Assert(cchTransitions < sizeof(szTransitions) - 64);
3374
3375	LogRel(("%s: %s failed, because the VM state is actually %s!\n", pszWho, szTransitions, pszStateCur));
3376	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3377	N_("%s failed because the current VM state, %s, was not found in the state transition table (%s)"),
3378	pszWho, pszStateCur, szTransitions);
3379	AssertMsgFailed(("%s - state=%s, transitions: %s. Check the cTransitions passed us.\n",
3380	pszWho, pszStateCur, szTransitions));
3381	}
3382	}
3383
3384	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3385	va_end(va);
3386	Assert(rc > 0 \|\| rc < 0);
3387	return rc;
3388	}
3389
3390
3391	/**
3392	* Interface used by EM to signal that it's entering the guru meditation state.
3393	*
3394	* This will notifying other threads.
3395	*
3396	* @returns true if the state changed to Guru, false if no state change.
3397	* @param pVM The cross context VM structure.
3398	*/
3399	VMMR3_INT_DECL(bool) VMR3SetGuruMeditation(PVM pVM)
3400	{
3401	PUVM pUVM = pVM->pUVM;
3402	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3403
3404	VMSTATE enmStateCur = pVM->enmVMState;
3405	bool fRc = true;
3406	if (enmStateCur == VMSTATE_RUNNING)
3407	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING, true /fSetRatherThanClearFF/);
3408	else if (enmStateCur == VMSTATE_RUNNING_LS)
3409	{
3410	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS, true /fSetRatherThanClearFF/);
3411	SSMR3Cancel(pUVM);
3412	}
3413	else
3414	fRc = false;
3415
3416	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3417	return fRc;
3418	}
3419
3420
3421	/**
3422	* Called by vmR3EmulationThreadWithId just before the VM structure is freed.
3423	*
3424	* @param pVM The cross context VM structure.
3425	*/
3426	void vmR3SetTerminated(PVM pVM)
3427	{
3428	vmR3SetState(pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING);
3429	}
3430
3431
3432	/**
3433	* Checks if the VM was teleported and hasn't been fully resumed yet.
3434	*
3435	* This applies to both sides of the teleportation since we may leave a working
3436	* clone behind and the user is allowed to resume this...
3437	*
3438	* @returns true / false.
3439	* @param pVM The cross context VM structure.
3440	* @thread Any thread.
3441	*/
3442	VMMR3_INT_DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM)
3443	{
3444	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
3445	return pVM->vm.s.fTeleportedAndNotFullyResumedYet;
3446	}
3447
3448
3449	/**
3450	* Registers a VM state change callback.
3451	*
3452	* You are not allowed to call any function which changes the VM state from a
3453	* state callback.
3454	*
3455	* @returns VBox status code.
3456	* @param pUVM The VM handle.
3457	* @param pfnAtState Pointer to callback.
3458	* @param pvUser User argument.
3459	* @thread Any.
3460	*/
3461	VMMR3DECL(int) VMR3AtStateRegister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3462	{
3463	LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3464
3465	/*
3466	* Validate input.
3467	*/
3468	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3469	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3470
3471	/*
3472	* Allocate a new record.
3473	*/
3474	PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3475	if (!pNew)
3476	return VERR_NO_MEMORY;
3477
3478	/* fill */
3479	pNew->pfnAtState = pfnAtState;
3480	pNew->pvUser = pvUser;
3481
3482	/* insert */
3483	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3484	pNew->pNext = *pUVM->vm.s.ppAtStateNext;
3485	*pUVM->vm.s.ppAtStateNext = pNew;
3486	pUVM->vm.s.ppAtStateNext = &pNew->pNext;
3487	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3488
3489	return VINF_SUCCESS;
3490	}
3491
3492
3493	/**
3494	* Deregisters a VM state change callback.
3495	*
3496	* @returns VBox status code.
3497	* @param pUVM The VM handle.
3498	* @param pfnAtState Pointer to callback.
3499	* @param pvUser User argument.
3500	* @thread Any.
3501	*/
3502	VMMR3DECL(int) VMR3AtStateDeregister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3503	{
3504	LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3505
3506	/*
3507	* Validate input.
3508	*/
3509	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3510	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3511
3512	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3513
3514	/*
3515	* Search the list for the entry.
3516	*/
3517	PVMATSTATE pPrev = NULL;
3518	PVMATSTATE pCur = pUVM->vm.s.pAtState;
3519	while ( pCur
3520	&& ( pCur->pfnAtState != pfnAtState
3521	\|\| pCur->pvUser != pvUser))
3522	{
3523	pPrev = pCur;
3524	pCur = pCur->pNext;
3525	}
3526	if (!pCur)
3527	{
3528	AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState));
3529	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3530	return VERR_FILE_NOT_FOUND;
3531	}
3532
3533	/*
3534	* Unlink it.
3535	*/
3536	if (pPrev)
3537	{
3538	pPrev->pNext = pCur->pNext;
3539	if (!pCur->pNext)
3540	pUVM->vm.s.ppAtStateNext = &pPrev->pNext;
3541	}
3542	else
3543	{
3544	pUVM->vm.s.pAtState = pCur->pNext;
3545	if (!pCur->pNext)
3546	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
3547	}
3548
3549	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3550
3551	/*
3552	* Free it.
3553	*/
3554	pCur->pfnAtState = NULL;
3555	pCur->pNext = NULL;
3556	MMR3HeapFree(pCur);
3557
3558	return VINF_SUCCESS;
3559	}
3560
3561
3562	/**
3563	* Registers a VM error callback.
3564	*
3565	* @returns VBox status code.
3566	* @param pUVM The VM handle.
3567	* @param pfnAtError Pointer to callback.
3568	* @param pvUser User argument.
3569	* @thread Any.
3570	*/
3571	VMMR3DECL(int) VMR3AtErrorRegister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3572	{
3573	LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3574
3575	/*
3576	* Validate input.
3577	*/
3578	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3579	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3580
3581	/*
3582	* Allocate a new record.
3583	*/
3584	PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3585	if (!pNew)
3586	return VERR_NO_MEMORY;
3587
3588	/* fill */
3589	pNew->pfnAtError = pfnAtError;
3590	pNew->pvUser = pvUser;
3591
3592	/* insert */
3593	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3594	pNew->pNext = *pUVM->vm.s.ppAtErrorNext;
3595	*pUVM->vm.s.ppAtErrorNext = pNew;
3596	pUVM->vm.s.ppAtErrorNext = &pNew->pNext;
3597	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3598
3599	return VINF_SUCCESS;
3600	}
3601
3602
3603	/**
3604	* Deregisters a VM error callback.
3605	*
3606	* @returns VBox status code.
3607	* @param pUVM The VM handle.
3608	* @param pfnAtError Pointer to callback.
3609	* @param pvUser User argument.
3610	* @thread Any.
3611	*/
3612	VMMR3DECL(int) VMR3AtErrorDeregister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3613	{
3614	LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3615
3616	/*
3617	* Validate input.
3618	*/
3619	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3620	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3621
3622	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3623
3624	/*
3625	* Search the list for the entry.
3626	*/
3627	PVMATERROR pPrev = NULL;
3628	PVMATERROR pCur = pUVM->vm.s.pAtError;
3629	while ( pCur
3630	&& ( pCur->pfnAtError != pfnAtError
3631	\|\| pCur->pvUser != pvUser))
3632	{
3633	pPrev = pCur;
3634	pCur = pCur->pNext;
3635	}
3636	if (!pCur)
3637	{
3638	AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError));
3639	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3640	return VERR_FILE_NOT_FOUND;
3641	}
3642
3643	/*
3644	* Unlink it.
3645	*/
3646	if (pPrev)
3647	{
3648	pPrev->pNext = pCur->pNext;
3649	if (!pCur->pNext)
3650	pUVM->vm.s.ppAtErrorNext = &pPrev->pNext;
3651	}
3652	else
3653	{
3654	pUVM->vm.s.pAtError = pCur->pNext;
3655	if (!pCur->pNext)
3656	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
3657	}
3658
3659	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3660
3661	/*
3662	* Free it.
3663	*/
3664	pCur->pfnAtError = NULL;
3665	pCur->pNext = NULL;
3666	MMR3HeapFree(pCur);
3667
3668	return VINF_SUCCESS;
3669	}
3670
3671
3672	/**
3673	* Ellipsis to va_list wrapper for calling pfnAtError.
3674	*/
3675	static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3676	{
3677	va_list va;
3678	va_start(va, pszFormat);
3679	pCur->pfnAtError(pVM->pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va);
3680	va_end(va);
3681	}
3682
3683
3684	/**
3685	* This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV.
3686	* The message is found in VMINT.
3687	*
3688	* @param pVM The cross context VM structure.
3689	* @thread EMT.
3690	*/
3691	VMMR3_INT_DECL(void) VMR3SetErrorWorker(PVM pVM)
3692	{
3693	VM_ASSERT_EMT(pVM);
3694	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Congrats!\n"));
3695
3696	/*
3697	* Unpack the error (if we managed to format one).
3698	*/
3699	PVMERROR pErr = pVM->vm.s.pErrorR3;
3700	const char *pszFile = NULL;
3701	const char *pszFunction = NULL;
3702	uint32_t iLine = 0;
3703	const char *pszMessage;
3704	int32_t rc = VERR_MM_HYPER_NO_MEMORY;
3705	if (pErr)
3706	{
3707	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3708	if (pErr->offFile)
3709	pszFile = (const char *)pErr + pErr->offFile;
3710	iLine = pErr->iLine;
3711	if (pErr->offFunction)
3712	pszFunction = (const char *)pErr + pErr->offFunction;
3713	if (pErr->offMessage)
3714	pszMessage = (const char *)pErr + pErr->offMessage;
3715	else
3716	pszMessage = "No message!";
3717	}
3718	else
3719	pszMessage = "No message! (Failed to allocate memory to put the error message in!)";
3720
3721	/*
3722	* Call the at error callbacks.
3723	*/
3724	PUVM pUVM = pVM->pUVM;
3725	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3726	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3727	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3728	vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage);
3729	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3730	}
3731
3732
3733	/**
3734	* Gets the number of errors raised via VMSetError.
3735	*
3736	* This can be used avoid double error messages.
3737	*
3738	* @returns The error count.
3739	* @param pUVM The VM handle.
3740	*/
3741	VMMR3_INT_DECL(uint32_t) VMR3GetErrorCount(PUVM pUVM)
3742	{
3743	AssertPtrReturn(pUVM, 0);
3744	AssertReturn(pUVM->u32Magic == UVM_MAGIC, 0);
3745	return pUVM->vm.s.cErrors;
3746	}
3747
3748
3749	/**
3750	* Creation time wrapper for vmR3SetErrorUV.
3751	*
3752	* @returns rc.
3753	* @param pUVM Pointer to the user mode VM structure.
3754	* @param rc The VBox status code.
3755	* @param SRC_POS The source position of this error.
3756	* @param pszFormat Format string.
3757	* @param ... The arguments.
3758	* @thread Any thread.
3759	*/
3760	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3761	{
3762	va_list va;
3763	va_start(va, pszFormat);
3764	vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va);
3765	va_end(va);
3766	return rc;
3767	}
3768
3769
3770	/**
3771	* Worker which calls everyone listening to the VM error messages.
3772	*
3773	* @param pUVM Pointer to the user mode VM structure.
3774	* @param rc The VBox status code.
3775	* @param SRC_POS The source position of this error.
3776	* @param pszFormat Format string.
3777	* @param pArgs Pointer to the format arguments.
3778	* @thread EMT
3779	*/
3780	DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char pszFormat, va_list pArgs)
3781	{
3782	/*
3783	* Log the error.
3784	*/
3785	va_list va3;
3786	va_copy(va3, *pArgs);
3787	RTLogRelPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3788	"VMSetError: %N\n",
3789	pszFile, iLine, pszFunction, rc,
3790	pszFormat, &va3);
3791	va_end(va3);
3792
3793	#ifdef LOG_ENABLED
3794	va_copy(va3, *pArgs);
3795	RTLogPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3796	"%N\n",
3797	pszFile, iLine, pszFunction, rc,
3798	pszFormat, &va3);
3799	va_end(va3);
3800	#endif
3801
3802	/*
3803	* Make a copy of the message.
3804	*/
3805	if (pUVM->pVM)
3806	vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs);
3807
3808	/*
3809	* Call the at error callbacks.
3810	*/
3811	bool fCalledSomeone = false;
3812	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3813	ASMAtomicIncU32(&pUVM->vm.s.cErrors);
3814	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3815	{
3816	va_list va2;
3817	va_copy(va2, *pArgs);
3818	pCur->pfnAtError(pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2);
3819	va_end(va2);
3820	fCalledSomeone = true;
3821	}
3822	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3823	}
3824
3825
3826	/**
3827	* Sets the error message.
3828	*
3829	* @returns rc. Meaning you can do:
3830	* @code
3831	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
3832	* @endcode
3833	* @param pUVM The user mode VM handle.
3834	* @param rc VBox status code.
3835	* @param SRC_POS Use RT_SRC_POS.
3836	* @param pszFormat Error message format string.
3837	* @param ... Error message arguments.
3838	* @thread Any
3839	*/
3840	VMMR3DECL(int) VMR3SetError(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3841	{
3842	va_list va;
3843	va_start(va, pszFormat);
3844	int rcRet = VMR3SetErrorV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
3845	va_end(va);
3846	return rcRet;
3847	}
3848
3849
3850	/**
3851	* Sets the error message.
3852	*
3853	* @returns rc. Meaning you can do:
3854	* @code
3855	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
3856	* @endcode
3857	* @param pUVM The user mode VM handle.
3858	* @param rc VBox status code.
3859	* @param SRC_POS Use RT_SRC_POS.
3860	* @param pszFormat Error message format string.
3861	* @param va Error message arguments.
3862	* @thread Any
3863	*/
3864	VMMR3DECL(int) VMR3SetErrorV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
3865	{
3866	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3867
3868	/* Take shortcut when called on EMT, skipping VM handle requirement + validation. */
3869	if (VMR3GetVMCPUThread(pUVM) != NIL_RTTHREAD)
3870	{
3871	va_list vaCopy;
3872	va_copy(vaCopy, va);
3873	vmR3SetErrorUV(pUVM, rc, RT_SRC_POS_ARGS, pszFormat, &vaCopy);
3874	va_end(vaCopy);
3875	return rc;
3876	}
3877
3878	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
3879	return VMSetErrorV(pUVM->pVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
3880	}
3881
3882
3883
3884	/**
3885	* Registers a VM runtime error callback.
3886	*
3887	* @returns VBox status code.
3888	* @param pUVM The user mode VM structure.
3889	* @param pfnAtRuntimeError Pointer to callback.
3890	* @param pvUser User argument.
3891	* @thread Any.
3892	*/
3893	VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3894	{
3895	LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3896
3897	/*
3898	* Validate input.
3899	*/
3900	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3901	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3902
3903	/*
3904	* Allocate a new record.
3905	*/
3906	PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3907	if (!pNew)
3908	return VERR_NO_MEMORY;
3909
3910	/* fill */
3911	pNew->pfnAtRuntimeError = pfnAtRuntimeError;
3912	pNew->pvUser = pvUser;
3913
3914	/* insert */
3915	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3916	pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext;
3917	*pUVM->vm.s.ppAtRuntimeErrorNext = pNew;
3918	pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext;
3919	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3920
3921	return VINF_SUCCESS;
3922	}
3923
3924
3925	/**
3926	* Deregisters a VM runtime error callback.
3927	*
3928	* @returns VBox status code.
3929	* @param pUVM The user mode VM handle.
3930	* @param pfnAtRuntimeError Pointer to callback.
3931	* @param pvUser User argument.
3932	* @thread Any.
3933	*/
3934	VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3935	{
3936	LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3937
3938	/*
3939	* Validate input.
3940	*/
3941	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3942	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3943
3944	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3945
3946	/*
3947	* Search the list for the entry.
3948	*/
3949	PVMATRUNTIMEERROR pPrev = NULL;
3950	PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError;
3951	while ( pCur
3952	&& ( pCur->pfnAtRuntimeError != pfnAtRuntimeError
3953	\|\| pCur->pvUser != pvUser))
3954	{
3955	pPrev = pCur;
3956	pCur = pCur->pNext;
3957	}
3958	if (!pCur)
3959	{
3960	AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError));
3961	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3962	return VERR_FILE_NOT_FOUND;
3963	}
3964
3965	/*
3966	* Unlink it.
3967	*/
3968	if (pPrev)
3969	{
3970	pPrev->pNext = pCur->pNext;
3971	if (!pCur->pNext)
3972	pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext;
3973	}
3974	else
3975	{
3976	pUVM->vm.s.pAtRuntimeError = pCur->pNext;
3977	if (!pCur->pNext)
3978	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
3979	}
3980
3981	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3982
3983	/*
3984	* Free it.
3985	*/
3986	pCur->pfnAtRuntimeError = NULL;
3987	pCur->pNext = NULL;
3988	MMR3HeapFree(pCur);
3989
3990	return VINF_SUCCESS;
3991	}
3992
3993
3994	/**
3995	* EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change
3996	* the state to FatalError(LS).
3997	*
3998	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
3999	* return code, see FNVMMEMTRENDEZVOUS.)
4000	*
4001	* @param pVM The cross context VM structure.
4002	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4003	* @param pvUser Ignored.
4004	*/
4005	static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser)
4006	{
4007	NOREF(pVCpu);
4008	Assert(!pvUser); NOREF(pvUser);
4009
4010	/*
4011	* The first EMT thru here changes the state.
4012	*/
4013	if (pVCpu->idCpu == pVM->cCpus - 1)
4014	{
4015	int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2,
4016	VMSTATE_FATAL_ERROR, VMSTATE_RUNNING,
4017	VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS);
4018	if (RT_FAILURE(rc))
4019	return rc;
4020	if (rc == 2)
4021	SSMR3Cancel(pVM->pUVM);
4022
4023	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
4024	}
4025
4026	/* This'll make sure we get out of whereever we are (e.g. REM). */
4027	return VINF_EM_SUSPEND;
4028	}
4029
4030
4031	/**
4032	* Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV.
4033	*
4034	* This does the common parts after the error has been saved / retrieved.
4035	*
4036	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4037	*
4038	* @param pVM The cross context VM structure.
4039	* @param fFlags The error flags.
4040	* @param pszErrorId Error ID string.
4041	* @param pszFormat Format string.
4042	* @param pVa Pointer to the format arguments.
4043	*/
4044	static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4045	{
4046	LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags));
4047	PUVM pUVM = pVM->pUVM;
4048
4049	/*
4050	* Take actions before the call.
4051	*/
4052	int rc;
4053	if (fFlags & VMSETRTERR_FLAGS_FATAL)
4054	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
4055	vmR3SetRuntimeErrorChangeState, NULL);
4056	else if (fFlags & VMSETRTERR_FLAGS_SUSPEND)
4057	{
4058	/* Make sure we don't call VMR3Suspend when we shouldn't. As seen in
4059	@bugref{10111} multiple runtime error may be flagged when we run out
4060	of disk space or similar, so don't freak out VMR3Suspend by calling
4061	it in an invalid VM state. */
4062	VMSTATE enmStateCur = pVM->enmVMState;
4063	if (enmStateCur == VMSTATE_RUNNING \|\| enmStateCur == VMSTATE_RUNNING_LS)
4064	rc = VMR3Suspend(pUVM, VMSUSPENDREASON_RUNTIME_ERROR);
4065	else
4066	rc = VINF_SUCCESS;
4067	}
4068	else
4069	rc = VINF_SUCCESS;
4070
4071	/*
4072	* Do the callback round.
4073	*/
4074	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4075	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
4076	for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext)
4077	{
4078	va_list va;
4079	va_copy(va, *pVa);
4080	pCur->pfnAtRuntimeError(pUVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va);
4081	va_end(va);
4082	}
4083	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4084
4085	return rc;
4086	}
4087
4088
4089	/**
4090	* Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon.
4091	*/
4092	static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
4093	{
4094	va_list va;
4095	va_start(va, pszFormat);
4096	int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va);
4097	va_end(va);
4098	return rc;
4099	}
4100
4101
4102	/**
4103	* This is a worker function for RC and Ring-0 calls to VMSetError and
4104	* VMSetErrorV.
4105	*
4106	* The message is found in VMINT.
4107	*
4108	* @returns VBox status code, see VMSetRuntimeError.
4109	* @param pVM The cross context VM structure.
4110	* @thread EMT.
4111	*/
4112	VMMR3_INT_DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM)
4113	{
4114	VM_ASSERT_EMT(pVM);
4115	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n"));
4116
4117	/*
4118	* Unpack the error (if we managed to format one).
4119	*/
4120	const char *pszErrorId = "SetRuntimeError";
4121	const char *pszMessage = "No message!";
4122	uint32_t fFlags = VMSETRTERR_FLAGS_FATAL;
4123	PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3;
4124	if (pErr)
4125	{
4126	AssertCompile(sizeof(const char) == sizeof(uint8_t));
4127	if (pErr->offErrorId)
4128	pszErrorId = (const char *)pErr + pErr->offErrorId;
4129	if (pErr->offMessage)
4130	pszMessage = (const char *)pErr + pErr->offMessage;
4131	fFlags = pErr->fFlags;
4132	}
4133
4134	/*
4135	* Join cause with vmR3SetRuntimeErrorV.
4136	*/
4137	return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4138	}
4139
4140
4141	/**
4142	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4143	*
4144	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4145	*
4146	* @param pVM The cross context VM structure.
4147	* @param fFlags The error flags.
4148	* @param pszErrorId Error ID string.
4149	* @param pszMessage The error message residing the MM heap.
4150	*
4151	* @thread EMT
4152	*/
4153	DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char pszErrorId, char pszMessage)
4154	{
4155	#if 0 /** @todo make copy of the error msg. */
4156	/*
4157	* Make a copy of the message.
4158	*/
4159	va_list va2;
4160	va_copy(va2, *pVa);
4161	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4162	va_end(va2);
4163	#endif
4164
4165	/*
4166	* Join paths with VMR3SetRuntimeErrorWorker.
4167	*/
4168	int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4169	MMR3HeapFree(pszMessage);
4170	return rc;
4171	}
4172
4173
4174	/**
4175	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4176	*
4177	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4178	*
4179	* @param pVM The cross context VM structure.
4180	* @param fFlags The error flags.
4181	* @param pszErrorId Error ID string.
4182	* @param pszFormat Format string.
4183	* @param pVa Pointer to the format arguments.
4184	*
4185	* @thread EMT
4186	*/
4187	DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4188	{
4189	/*
4190	* Make a copy of the message.
4191	*/
4192	va_list va2;
4193	va_copy(va2, *pVa);
4194	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4195	va_end(va2);
4196
4197	/*
4198	* Join paths with VMR3SetRuntimeErrorWorker.
4199	*/
4200	return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa);
4201	}
4202
4203
4204	/**
4205	* Gets the number of runtime errors raised via VMR3SetRuntimeError.
4206	*
4207	* This can be used avoid double error messages.
4208	*
4209	* @returns The runtime error count.
4210	* @param pUVM The user mode VM handle.
4211	*/
4212	VMMR3_INT_DECL(uint32_t) VMR3GetRuntimeErrorCount(PUVM pUVM)
4213	{
4214	return pUVM->vm.s.cRuntimeErrors;
4215	}
4216
4217
4218	/**
4219	* Gets the ID virtual of the virtual CPU associated with the calling thread.
4220	*
4221	* @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT.
4222	*
4223	* @param pVM The cross context VM structure.
4224	*/
4225	VMMR3_INT_DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM)
4226	{
4227	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4228	return pUVCpu
4229	? pUVCpu->idCpu
4230	: NIL_VMCPUID;
4231	}
4232
4233
4234	/**
4235	* Checks if the VM is long-mode (64-bit) capable or not.
4236	*
4237	* @returns true if VM can operate in long-mode, false otherwise.
4238	* @param pVM The cross context VM structure.
4239	*/
4240	VMMR3_INT_DECL(bool) VMR3IsLongModeAllowed(PVM pVM)
4241	{
4242	switch (pVM->bMainExecutionEngine)
4243	{
4244	#if !defined(VBOX_VMM_TARGET_ARMV8)
4245	case VM_EXEC_ENGINE_HW_VIRT:
4246	return HMIsLongModeAllowed(pVM);
4247	#endif
4248
4249	case VM_EXEC_ENGINE_NATIVE_API:
4250	return NEMHCIsLongModeAllowed(pVM);
4251
4252	case VM_EXEC_ENGINE_NOT_SET:
4253	AssertFailed();
4254	RT_FALL_THRU();
4255	default:
4256	return false;
4257	}
4258	}
4259
4260
4261	/**
4262	* Returns the native ID of the current EMT VMCPU thread.
4263	*
4264	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4265	* @param pVM The cross context VM structure.
4266	* @thread EMT
4267	*/
4268	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM)
4269	{
4270	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4271
4272	if (!pUVCpu)
4273	return NIL_RTNATIVETHREAD;
4274
4275	return pUVCpu->vm.s.NativeThreadEMT;
4276	}
4277
4278
4279	/**
4280	* Returns the native ID of the current EMT VMCPU thread.
4281	*
4282	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4283	* @param pUVM The user mode VM structure.
4284	* @thread EMT
4285	*/
4286	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM)
4287	{
4288	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4289
4290	if (!pUVCpu)
4291	return NIL_RTNATIVETHREAD;
4292
4293	return pUVCpu->vm.s.NativeThreadEMT;
4294	}
4295
4296
4297	/**
4298	* Returns the handle of the current EMT VMCPU thread.
4299	*
4300	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4301	* @param pUVM The user mode VM handle.
4302	* @thread EMT
4303	*/
4304	VMMR3DECL(RTTHREAD) VMR3GetVMCPUThread(PUVM pUVM)
4305	{
4306	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4307
4308	if (!pUVCpu)
4309	return NIL_RTTHREAD;
4310
4311	return pUVCpu->vm.s.ThreadEMT;
4312	}
4313
4314
4315	/**
4316	* Returns the handle of the current EMT VMCPU thread.
4317	*
4318	* @returns The IPRT thread handle.
4319	* @param pUVCpu The user mode CPU handle.
4320	* @thread EMT
4321	*/
4322	VMMR3_INT_DECL(RTTHREAD) VMR3GetThreadHandle(PUVMCPU pUVCpu)
4323	{
4324	return pUVCpu->vm.s.ThreadEMT;
4325	}
4326
4327
4328	/**
4329	* Return the package and core ID of a CPU.
4330	*
4331	* @returns VBOX status code.
4332	* @param pUVM The user mode VM handle.
4333	* @param idCpu Virtual CPU to get the ID from.
4334	* @param pidCpuCore Where to store the core ID of the virtual CPU.
4335	* @param pidCpuPackage Where to store the package ID of the virtual CPU.
4336	*
4337	*/
4338	VMMR3DECL(int) VMR3GetCpuCoreAndPackageIdFromCpuId(PUVM pUVM, VMCPUID idCpu, uint32_t pidCpuCore, uint32_t pidCpuPackage)
4339	{
4340	/*
4341	* Validate input.
4342	*/
4343	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4344	PVM pVM = pUVM->pVM;
4345	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4346	AssertPtrReturn(pidCpuCore, VERR_INVALID_POINTER);
4347	AssertPtrReturn(pidCpuPackage, VERR_INVALID_POINTER);
4348	if (idCpu >= pVM->cCpus)
4349	return VERR_INVALID_CPU_ID;
4350
4351	/*
4352	* Set return values.
4353	*/
4354	#ifdef VBOX_WITH_MULTI_CORE
4355	*pidCpuCore = idCpu;
4356	*pidCpuPackage = 0;
4357	#else
4358	*pidCpuCore = 0;
4359	*pidCpuPackage = idCpu;
4360	#endif
4361
4362	return VINF_SUCCESS;
4363	}
4364
4365
4366	/**
4367	* Worker for VMR3HotUnplugCpu.
4368	*
4369	* @returns VINF_EM_WAIT_SPIP (strict status code).
4370	* @param pVM The cross context VM structure.
4371	* @param idCpu The current CPU.
4372	*/
4373	static DECLCALLBACK(int) vmR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4374	{
4375	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
4376	VMCPU_ASSERT_EMT(pVCpu);
4377
4378	/*
4379	* Reset per CPU resources.
4380	*
4381	* Actually only needed for VT-x because the CPU seems to be still in some
4382	* paged mode and startup fails after a new hot plug event. SVM works fine
4383	* even without this.
4384	*/
4385	Log(("vmR3HotUnplugCpu for VCPU %u\n", idCpu));
4386	PGMR3ResetCpu(pVM, pVCpu);
4387	PDMR3ResetCpu(pVCpu);
4388	TRPMR3ResetCpu(pVCpu);
4389	CPUMR3ResetCpu(pVM, pVCpu);
4390	EMR3ResetCpu(pVCpu);
4391	HMR3ResetCpu(pVCpu);
4392	NEMR3ResetCpu(pVCpu, false /fInitIpi/);
4393	return VINF_EM_WAIT_SIPI;
4394	}
4395
4396
4397	/**
4398	* Hot-unplugs a CPU from the guest.
4399	*
4400	* @returns VBox status code.
4401	* @param pUVM The user mode VM handle.
4402	* @param idCpu Virtual CPU to perform the hot unplugging operation on.
4403	*/
4404	VMMR3DECL(int) VMR3HotUnplugCpu(PUVM pUVM, VMCPUID idCpu)
4405	{
4406	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4407	PVM pVM = pUVM->pVM;
4408	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4409	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4410
4411	/** @todo r=bird: Don't destroy the EMT, it'll break VMMR3EmtRendezvous and
4412	* broadcast requests. Just note down somewhere that the CPU is
4413	* offline and send it to SPIP wait. Maybe modify VMCPUSTATE and push
4414	* it out of the EM loops when offline. */
4415	return VMR3ReqCallNoWaitU(pUVM, idCpu, (PFNRT)vmR3HotUnplugCpu, 2, pVM, idCpu);
4416	}
4417
4418
4419	/**
4420	* Hot-plugs a CPU on the guest.
4421	*
4422	* @returns VBox status code.
4423	* @param pUVM The user mode VM handle.
4424	* @param idCpu Virtual CPU to perform the hot plugging operation on.
4425	*/
4426	VMMR3DECL(int) VMR3HotPlugCpu(PUVM pUVM, VMCPUID idCpu)
4427	{
4428	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4429	PVM pVM = pUVM->pVM;
4430	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4431	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4432
4433	/** @todo r-bird: Just mark it online and make sure it waits on SPIP. */
4434	return VINF_SUCCESS;
4435	}
4436
4437
4438	/**
4439	* Changes the VMM execution cap.
4440	*
4441	* @returns VBox status code.
4442	* @param pUVM The user mode VM structure.
4443	* @param uCpuExecutionCap New CPU execution cap in precent, 1-100. Where
4444	* 100 is max performance (default).
4445	*/
4446	VMMR3DECL(int) VMR3SetCpuExecutionCap(PUVM pUVM, uint32_t uCpuExecutionCap)
4447	{
4448	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4449	PVM pVM = pUVM->pVM;
4450	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4451	AssertReturn(uCpuExecutionCap > 0 && uCpuExecutionCap <= 100, VERR_INVALID_PARAMETER);
4452
4453	Log(("VMR3SetCpuExecutionCap: new priority = %d\n", uCpuExecutionCap));
4454	/* Note: not called from EMT. */
4455	pVM->uCpuExecutionCap = uCpuExecutionCap;
4456	return VINF_SUCCESS;
4457	}
4458
4459
4460	/**
4461	* Control whether the VM should power off when resetting.
4462	*
4463	* @returns VBox status code.
4464	* @param pUVM The user mode VM handle.
4465	* @param fPowerOffInsteadOfReset Flag whether the VM should power off when
4466	* resetting.
4467	*/
4468	VMMR3DECL(int) VMR3SetPowerOffInsteadOfReset(PUVM pUVM, bool fPowerOffInsteadOfReset)
4469	{
4470	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4471	PVM pVM = pUVM->pVM;
4472	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4473
4474	/* Note: not called from EMT. */
4475	pVM->vm.s.fPowerOffInsteadOfReset = fPowerOffInsteadOfReset;
4476	return VINF_SUCCESS;
4477	}
4478

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source: vbox/trunk/src/VBox/VMM/VMMR3/VM.cpp@ 102869

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