VM.cpp@ 107044

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1	/* $Id: VM.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* VM - Virtual Machine
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	/** @page pg_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 = RTCritSectInitNamed(&pUVM->vm.s.AtStateCritSect, "VM-AtStateCritSect");
492	if (RT_SUCCESS(rc))
493	{
494	rc = RTCritSectInitNamed(&pUVM->vm.s.AtErrorCritSect, "VM-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	}
1097
1098
1099	/**
1100	* EMT rendezvous worker for VMR3PowerOn.
1101	*
1102	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
1103	* code, see FNVMMEMTRENDEZVOUS.)
1104	*
1105	* @param pVM The cross context VM structure.
1106	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1107	* @param pvUser Ignored.
1108	*/
1109	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser)
1110	{
1111	LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1112	Assert(!pvUser); NOREF(pvUser);
1113
1114	/*
1115	* The first thread thru here tries to change the state. We shouldn't be
1116	* called again if this fails.
1117	*/
1118	if (pVCpu->idCpu == pVM->cCpus - 1)
1119	{
1120	int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED);
1121	if (RT_FAILURE(rc))
1122	return rc;
1123	}
1124
1125	VMSTATE enmVMState = VMR3GetState(pVM);
1126	AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON,
1127	("%s\n", VMR3GetStateName(enmVMState)),
1128	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1129
1130	/*
1131	* All EMTs changes their state to started.
1132	*/
1133	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1134
1135	/*
1136	* EMT(0) is last thru here and it will make the notification calls
1137	* and advance the state.
1138	*/
1139	if (pVCpu->idCpu == 0)
1140	{
1141	PDMR3PowerOn(pVM);
1142	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON);
1143	}
1144
1145	return VINF_SUCCESS;
1146	}
1147
1148
1149	/**
1150	* Powers on the virtual machine.
1151	*
1152	* @returns VBox status code.
1153	*
1154	* @param pUVM The VM to power on.
1155	*
1156	* @thread Any thread.
1157	* @vmstate Created
1158	* @vmstateto PoweringOn+Running
1159	*/
1160	VMMR3DECL(int) VMR3PowerOn(PUVM pUVM)
1161	{
1162	LogFlow(("VMR3PowerOn: pUVM=%p\n", pUVM));
1163	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1164	PVM pVM = pUVM->pVM;
1165	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1166
1167	/*
1168	* Gather all the EMTs to reduce the init TSC drift and keep
1169	* the state changing APIs a bit uniform.
1170	*/
1171	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1172	vmR3PowerOn, NULL);
1173	LogFlow(("VMR3PowerOn: returns %Rrc\n", rc));
1174	return rc;
1175	}
1176
1177
1178	/**
1179	* Does the suspend notifications.
1180	*
1181	* @param pVM The cross context VM structure.
1182	* @thread EMT(0)
1183	*/
1184	static void vmR3SuspendDoWork(PVM pVM)
1185	{
1186	PDMR3Suspend(pVM);
1187	}
1188
1189
1190	/**
1191	* EMT rendezvous worker for VMR3Suspend.
1192	*
1193	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
1194	* return code, see FNVMMEMTRENDEZVOUS.)
1195	*
1196	* @param pVM The cross context VM structure.
1197	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1198	* @param pvUser Ignored.
1199	*/
1200	static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1201	{
1202	VMSUSPENDREASON enmReason = (VMSUSPENDREASON)(uintptr_t)pvUser;
1203	LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1204
1205	/*
1206	* The first EMT switches the state to suspending. If this fails because
1207	* something was racing us in one way or the other, there will be no more
1208	* calls and thus the state assertion below is not going to annoy anyone.
1209	*
1210	* Note! Changes to the state transition here needs to be reflected in the
1211	* checks in vmR3SetRuntimeErrorCommon!
1212	*/
1213	if (pVCpu->idCpu == pVM->cCpus - 1)
1214	{
1215	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1216	VMSTATE_SUSPENDING, VMSTATE_RUNNING,
1217	VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS);
1218	if (RT_FAILURE(rc))
1219	return rc;
1220	pVM->pUVM->vm.s.enmSuspendReason = enmReason;
1221	}
1222
1223	VMSTATE enmVMState = VMR3GetState(pVM);
1224	AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING
1225	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS,
1226	("%s\n", VMR3GetStateName(enmVMState)),
1227	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1228
1229	/*
1230	* EMT(0) does the actually suspending after all the other CPUs have
1231	* been thru here.
1232	*/
1233	if (pVCpu->idCpu == 0)
1234	{
1235	vmR3SuspendDoWork(pVM);
1236
1237	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1238	VMSTATE_SUSPENDED, VMSTATE_SUSPENDING,
1239	VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS);
1240	if (RT_FAILURE(rc))
1241	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1242	}
1243
1244	return VINF_EM_SUSPEND;
1245	}
1246
1247
1248	/**
1249	* Suspends a running VM.
1250	*
1251	* @returns VBox status code. When called on EMT, this will be a strict status
1252	* code that has to be propagated up the call stack.
1253	*
1254	* @param pUVM The VM to suspend.
1255	* @param enmReason The reason for suspending.
1256	*
1257	* @thread Any thread.
1258	* @vmstate Running or RunningLS
1259	* @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS
1260	*/
1261	VMMR3DECL(int) VMR3Suspend(PUVM pUVM, VMSUSPENDREASON enmReason)
1262	{
1263	LogFlow(("VMR3Suspend: pUVM=%p\n", pUVM));
1264	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1265	AssertReturn(enmReason > VMSUSPENDREASON_INVALID && enmReason < VMSUSPENDREASON_END, VERR_INVALID_PARAMETER);
1266
1267	/*
1268	* Gather all the EMTs to make sure there are no races before
1269	* changing the VM state.
1270	*/
1271	int rc = VMMR3EmtRendezvous(pUVM->pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1272	vmR3Suspend, (void *)(uintptr_t)enmReason);
1273	LogFlow(("VMR3Suspend: returns %Rrc\n", rc));
1274	return rc;
1275	}
1276
1277
1278	/**
1279	* Retrieves the reason for the most recent suspend.
1280	*
1281	* @returns Suspend reason. VMSUSPENDREASON_INVALID if no suspend has been done
1282	* or the handle is invalid.
1283	* @param pUVM The user mode VM handle.
1284	*/
1285	VMMR3DECL(VMSUSPENDREASON) VMR3GetSuspendReason(PUVM pUVM)
1286	{
1287	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSUSPENDREASON_INVALID);
1288	return pUVM->vm.s.enmSuspendReason;
1289	}
1290
1291
1292	/**
1293	* EMT rendezvous worker for VMR3Resume.
1294	*
1295	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1296	* return code, see FNVMMEMTRENDEZVOUS.)
1297	*
1298	* @param pVM The cross context VM structure.
1299	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1300	* @param pvUser Reason.
1301	*/
1302	static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser)
1303	{
1304	VMRESUMEREASON enmReason = (VMRESUMEREASON)(uintptr_t)pvUser;
1305	LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u enmReason=%d\n", pVM, pVCpu, pVCpu->idCpu, enmReason));
1306
1307	/*
1308	* The first thread thru here tries to change the state. We shouldn't be
1309	* called again if this fails.
1310	*/
1311	if (pVCpu->idCpu == pVM->cCpus - 1)
1312	{
1313	int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED);
1314	if (RT_FAILURE(rc))
1315	return rc;
1316	pVM->pUVM->vm.s.enmResumeReason = enmReason;
1317	}
1318
1319	VMSTATE enmVMState = VMR3GetState(pVM);
1320	AssertMsgReturn(enmVMState == VMSTATE_RESUMING,
1321	("%s\n", VMR3GetStateName(enmVMState)),
1322	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1323
1324	#if 0
1325	/*
1326	* All EMTs changes their state to started.
1327	*/
1328	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1329	#endif
1330
1331	/*
1332	* EMT(0) is last thru here and it will make the notification calls
1333	* and advance the state.
1334	*/
1335	if (pVCpu->idCpu == 0)
1336	{
1337	PDMR3Resume(pVM);
1338	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING);
1339	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1340	}
1341
1342	return VINF_EM_RESUME;
1343	}
1344
1345
1346	/**
1347	* Resume VM execution.
1348	*
1349	* @returns VBox status code. When called on EMT, this will be a strict status
1350	* code that has to be propagated up the call stack.
1351	*
1352	* @param pUVM The user mode VM handle.
1353	* @param enmReason The reason we're resuming.
1354	*
1355	* @thread Any thread.
1356	* @vmstate Suspended
1357	* @vmstateto Running
1358	*/
1359	VMMR3DECL(int) VMR3Resume(PUVM pUVM, VMRESUMEREASON enmReason)
1360	{
1361	LogFlow(("VMR3Resume: pUVM=%p\n", pUVM));
1362	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1363	PVM pVM = pUVM->pVM;
1364	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1365	AssertReturn(enmReason > VMRESUMEREASON_INVALID && enmReason < VMRESUMEREASON_END, VERR_INVALID_PARAMETER);
1366
1367	/*
1368	* Gather all the EMTs to make sure there are no races before
1369	* changing the VM state.
1370	*/
1371	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1372	vmR3Resume, (void *)(uintptr_t)enmReason);
1373	LogFlow(("VMR3Resume: returns %Rrc\n", rc));
1374	return rc;
1375	}
1376
1377
1378	/**
1379	* Retrieves the reason for the most recent resume.
1380	*
1381	* @returns Resume reason. VMRESUMEREASON_INVALID if no suspend has been
1382	* done or the handle is invalid.
1383	* @param pUVM The user mode VM handle.
1384	*/
1385	VMMR3DECL(VMRESUMEREASON) VMR3GetResumeReason(PUVM pUVM)
1386	{
1387	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMRESUMEREASON_INVALID);
1388	return pUVM->vm.s.enmResumeReason;
1389	}
1390
1391
1392	/**
1393	* EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM
1394	* after the live step has been completed.
1395	*
1396	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1397	* return code, see FNVMMEMTRENDEZVOUS.)
1398	*
1399	* @param pVM The cross context VM structure.
1400	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1401	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1402	*/
1403	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1404	{
1405	LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1406	bool pfSuspended = (bool )pvUser;
1407
1408	/*
1409	* The first thread thru here tries to change the state. We shouldn't be
1410	* called again if this fails.
1411	*/
1412	if (pVCpu->idCpu == pVM->cCpus - 1U)
1413	{
1414	PUVM pUVM = pVM->pUVM;
1415	int rc;
1416
1417	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
1418	VMSTATE enmVMState = pVM->enmVMState;
1419	switch (enmVMState)
1420	{
1421	case VMSTATE_RUNNING_LS:
1422	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS, false /fSetRatherThanClearFF/);
1423	rc = VINF_SUCCESS;
1424	break;
1425
1426	case VMSTATE_SUSPENDED_EXT_LS:
1427	case VMSTATE_SUSPENDED_LS: /* (via reset) */
1428	rc = VINF_SUCCESS;
1429	break;
1430
1431	case VMSTATE_DEBUGGING_LS:
1432	rc = VERR_TRY_AGAIN;
1433	break;
1434
1435	case VMSTATE_OFF_LS:
1436	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS, false /fSetRatherThanClearFF/);
1437	rc = VERR_SSM_LIVE_POWERED_OFF;
1438	break;
1439
1440	case VMSTATE_FATAL_ERROR_LS:
1441	vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, false /fSetRatherThanClearFF/);
1442	rc = VERR_SSM_LIVE_FATAL_ERROR;
1443	break;
1444
1445	case VMSTATE_GURU_MEDITATION_LS:
1446	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, false /fSetRatherThanClearFF/);
1447	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1448	break;
1449
1450	case VMSTATE_POWERING_OFF_LS:
1451	case VMSTATE_SUSPENDING_EXT_LS:
1452	case VMSTATE_RESETTING_LS:
1453	default:
1454	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
1455	rc = VERR_VM_UNEXPECTED_VM_STATE;
1456	break;
1457	}
1458	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
1459	if (RT_FAILURE(rc))
1460	{
1461	LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState)));
1462	return rc;
1463	}
1464	}
1465
1466	VMSTATE enmVMState = VMR3GetState(pVM);
1467	AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS,
1468	("%s\n", VMR3GetStateName(enmVMState)),
1469	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
1470
1471	/*
1472	* Only EMT(0) have work to do since it's last thru here.
1473	*/
1474	if (pVCpu->idCpu == 0)
1475	{
1476	vmR3SuspendDoWork(pVM);
1477	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1,
1478	VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
1479	if (RT_FAILURE(rc))
1480	return VERR_VM_UNEXPECTED_UNSTABLE_STATE;
1481
1482	*pfSuspended = true;
1483	}
1484
1485	return VINF_EM_SUSPEND;
1486	}
1487
1488
1489	/**
1490	* EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a
1491	* SSMR3LiveDoStep1 failure.
1492	*
1493	* Doing this as a rendezvous operation avoids all annoying transition
1494	* states.
1495	*
1496	* @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_*
1497	* status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
1498	*
1499	* @param pVM The cross context VM structure.
1500	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1501	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1502	*/
1503	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser)
1504	{
1505	LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1506	bool pfSuspended = (bool )pvUser;
1507	NOREF(pVCpu);
1508
1509	int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 8,
1510	VMSTATE_OFF, VMSTATE_OFF_LS, /* 1 */
1511	VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, /* 2 */
1512	VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, /* 3 */
1513	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_LS, /* 4 */
1514	VMSTATE_SUSPENDED, VMSTATE_SAVING,
1515	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS,
1516	VMSTATE_RUNNING, VMSTATE_RUNNING_LS,
1517	VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS);
1518	if (rc == 1)
1519	rc = VERR_SSM_LIVE_POWERED_OFF;
1520	else if (rc == 2)
1521	rc = VERR_SSM_LIVE_FATAL_ERROR;
1522	else if (rc == 3)
1523	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1524	else if (rc == 4)
1525	{
1526	*pfSuspended = true;
1527	rc = VINF_SUCCESS;
1528	}
1529	else if (rc > 0)
1530	rc = VINF_SUCCESS;
1531	return rc;
1532	}
1533
1534
1535	/**
1536	* EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save.
1537	*
1538	* @returns VBox status code.
1539	* @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called.
1540	*
1541	* @param pVM The cross context VM structure.
1542	* @param pSSM The handle of saved state operation.
1543	*
1544	* @thread EMT(0)
1545	*/
1546	static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM)
1547	{
1548	LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM));
1549	VM_ASSERT_EMT0(pVM);
1550
1551	/*
1552	* Advance the state and mark if VMR3Suspend was called.
1553	*/
1554	int rc = VINF_SUCCESS;
1555	VMSTATE enmVMState = VMR3GetState(pVM);
1556	if (enmVMState == VMSTATE_SUSPENDED_LS)
1557	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS);
1558	else
1559	{
1560	if (enmVMState != VMSTATE_SAVING)
1561	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS);
1562	rc = VINF_SSM_LIVE_SUSPENDED;
1563	}
1564
1565	/*
1566	* Finish up and release the handle. Careful with the status codes.
1567	*/
1568	int rc2 = SSMR3LiveDoStep2(pSSM);
1569	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1570	rc = rc2;
1571
1572	rc2 = SSMR3LiveDone(pSSM);
1573	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1574	rc = rc2;
1575
1576	/*
1577	* Advance to the final state and return.
1578	*/
1579	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1580	Assert(rc > VINF_EM_LAST \|\| rc < VINF_EM_FIRST);
1581	return rc;
1582	}
1583
1584
1585	/**
1586	* Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or
1587	* SSMR3LiveSave.
1588	*
1589	* @returns VBox status code.
1590	*
1591	* @param pVM The cross context VM structure.
1592	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1593	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1594	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1595	* @param pvStreamOpsUser The user argument to the stream methods.
1596	* @param enmAfter What to do afterwards.
1597	* @param pfnProgress Progress callback. Optional.
1598	* @param pvProgressUser User argument for the progress callback.
1599	* @param ppSSM Where to return the saved state handle in case of a
1600	* live snapshot scenario.
1601	*
1602	* @thread EMT
1603	*/
1604	static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1605	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, PSSMHANDLE ppSSM)
1606	{
1607	int rc = VINF_SUCCESS;
1608
1609	LogFlow(("vmR3Save: pVM=%p cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p ppSSM=%p\n",
1610	pVM, cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM));
1611
1612	/*
1613	* Validate input.
1614	*/
1615	AssertPtrNull(pszFilename);
1616	AssertPtrNull(pStreamOps);
1617	AssertPtr(pVM);
1618	Assert( enmAfter == SSMAFTER_DESTROY
1619	\|\| enmAfter == SSMAFTER_CONTINUE
1620	\|\| enmAfter == SSMAFTER_TELEPORT);
1621	AssertPtr(ppSSM);
1622	*ppSSM = NULL;
1623
1624	/*
1625	* Change the state and perform/start the saving.
1626	*/
1627	rc = vmR3TrySetState(pVM, "VMR3Save", 2,
1628	VMSTATE_SAVING, VMSTATE_SUSPENDED,
1629	VMSTATE_RUNNING_LS, VMSTATE_RUNNING);
1630	if (rc == 1 && enmAfter != SSMAFTER_TELEPORT)
1631	{
1632	rc = SSMR3Save(pVM, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser);
1633	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1634	}
1635	else if (rc == 2 \|\| enmAfter == SSMAFTER_TELEPORT)
1636	{
1637	if (enmAfter == SSMAFTER_TELEPORT)
1638	pVM->vm.s.fTeleportedAndNotFullyResumedYet = true;
1639	rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1640	enmAfter, pfnProgress, pvProgressUser, ppSSM);
1641	/* (We're not subject to cancellation just yet.) */
1642	}
1643	else
1644	Assert(RT_FAILURE(rc));
1645	return rc;
1646	}
1647
1648
1649	/**
1650	* Common worker for VMR3Save and VMR3Teleport.
1651	*
1652	* @returns VBox status code.
1653	*
1654	* @param pVM The cross context VM structure.
1655	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1656	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1657	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1658	* @param pvStreamOpsUser The user argument to the stream methods.
1659	* @param enmAfter What to do afterwards.
1660	* @param pfnProgress Progress callback. Optional.
1661	* @param pvProgressUser User argument for the progress callback.
1662	* @param pfSuspended Set if we suspended the VM.
1663	*
1664	* @thread Non-EMT
1665	*/
1666	static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime,
1667	const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1668	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1669	{
1670	/*
1671	* Request the operation in EMT(0).
1672	*/
1673	PSSMHANDLE pSSM;
1674	int rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/,
1675	(PFNRT)vmR3Save, 9, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1676	enmAfter, pfnProgress, pvProgressUser, &pSSM);
1677	if ( RT_SUCCESS(rc)
1678	&& pSSM)
1679	{
1680	/*
1681	* Live snapshot.
1682	*
1683	* The state handling here is kind of tricky, doing it on EMT(0) helps
1684	* a bit. See the VMSTATE diagram for details.
1685	*/
1686	rc = SSMR3LiveDoStep1(pSSM);
1687	if (RT_SUCCESS(rc))
1688	{
1689	if (VMR3GetState(pVM) != VMSTATE_SAVING)
1690	for (;;)
1691	{
1692	/* Try suspend the VM. */
1693	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1694	vmR3LiveDoSuspend, pfSuspended);
1695	if (rc != VERR_TRY_AGAIN)
1696	break;
1697
1698	/* Wait for the state to change. */
1699	RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */
1700	}
1701	if (RT_SUCCESS(rc))
1702	rc = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM);
1703	else
1704	{
1705	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1706	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc)); NOREF(rc2);
1707	}
1708	}
1709	else
1710	{
1711	int rc2 = VMR3ReqCallWait(pVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1712	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1713
1714	rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, pfSuspended);
1715	if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED)
1716	rc = rc2;
1717	}
1718	}
1719
1720	return rc;
1721	}
1722
1723
1724	/**
1725	* Save current VM state.
1726	*
1727	* Can be used for both saving the state and creating snapshots.
1728	*
1729	* When called for a VM in the Running state, the saved state is created live
1730	* and the VM is only suspended when the final part of the saving is preformed.
1731	* The VM state will not be restored to Running in this case and it's up to the
1732	* caller to call VMR3Resume if this is desirable. (The rational is that the
1733	* caller probably wish to reconfigure the disks before resuming the VM.)
1734	*
1735	* @returns VBox status code.
1736	*
1737	* @param pUVM The VM which state should be saved.
1738	* @param pszFilename The name of the save state file.
1739	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1740	* @param pvStreamOpsUser The user argument to the stream methods.
1741	* @param fContinueAfterwards Whether continue execution afterwards or not.
1742	* When in doubt, set this to true.
1743	* @param pfnProgress Progress callback. Optional.
1744	* @param pvUser User argument for the progress callback.
1745	* @param pfSuspended Set if we suspended the VM.
1746	*
1747	* @thread Non-EMT.
1748	* @vmstate Suspended or Running
1749	* @vmstateto Saving+Suspended or
1750	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1751	*/
1752	VMMR3DECL(int) VMR3Save(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1753	bool fContinueAfterwards, PFNVMPROGRESS pfnProgress, void *pvUser,
1754	bool *pfSuspended)
1755	{
1756	LogFlow(("VMR3Save: pUVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p pfSuspended=%p\n",
1757	pUVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser, pfSuspended));
1758
1759	/*
1760	* Validate input.
1761	*/
1762	AssertPtr(pfSuspended);
1763	*pfSuspended = false;
1764	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1765	PVM pVM = pUVM->pVM;
1766	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1767	VM_ASSERT_OTHER_THREAD(pVM);
1768	AssertReturn(pszFilename \|\| pStreamOps, VERR_INVALID_POINTER);
1769	AssertReturn( (!pStreamOps && *pszFilename)
1770	\|\| pStreamOps,
1771	VERR_INVALID_PARAMETER);
1772	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1773
1774	/*
1775	* Join paths with VMR3Teleport.
1776	*/
1777	SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY;
1778	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
1779	pszFilename, pStreamOps, pvStreamOpsUser,
1780	enmAfter, pfnProgress, pvUser, pfSuspended);
1781	LogFlow(("VMR3Save: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1782	return rc;
1783	}
1784
1785
1786	/**
1787	* Teleport the VM (aka live migration).
1788	*
1789	* @returns VBox status code.
1790	*
1791	* @param pUVM The VM which state should be saved.
1792	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1793	* @param pStreamOps The stream methods.
1794	* @param pvStreamOpsUser The user argument to the stream methods.
1795	* @param pfnProgress Progress callback. Optional.
1796	* @param pvProgressUser User argument for the progress callback.
1797	* @param pfSuspended Set if we suspended the VM.
1798	*
1799	* @thread Non-EMT.
1800	* @vmstate Suspended or Running
1801	* @vmstateto Saving+Suspended or
1802	* RunningLS+SuspendingLS+SuspendedLS+Saving+Suspended.
1803	*/
1804	VMMR3DECL(int) VMR3Teleport(PUVM pUVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1805	PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1806	{
1807	LogFlow(("VMR3Teleport: pUVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n",
1808	pUVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1809
1810	/*
1811	* Validate input.
1812	*/
1813	AssertPtr(pfSuspended);
1814	*pfSuspended = false;
1815	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1816	PVM pVM = pUVM->pVM;
1817	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1818	VM_ASSERT_OTHER_THREAD(pVM);
1819	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1820	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1821
1822	/*
1823	* Join paths with VMR3Save.
1824	*/
1825	int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime, NULL /pszFilename/, pStreamOps, pvStreamOpsUser,
1826	SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended);
1827	LogFlow(("VMR3Teleport: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1828	return rc;
1829	}
1830
1831
1832
1833	/**
1834	* EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream.
1835	*
1836	* @returns VBox status code.
1837	*
1838	* @param pUVM Pointer to the VM.
1839	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1840	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1841	* @param pvStreamOpsUser The user argument to the stream methods.
1842	* @param pfnProgress Progress callback. Optional.
1843	* @param pvProgressUser User argument for the progress callback.
1844	* @param fTeleporting Indicates whether we're teleporting or not.
1845	*
1846	* @thread EMT.
1847	*/
1848	static DECLCALLBACK(int) vmR3Load(PUVM pUVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1849	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1850	{
1851	LogFlow(("vmR3Load: pUVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1852	pUVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1853
1854	/*
1855	* Validate input (paranoia).
1856	*/
1857	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1858	PVM pVM = pUVM->pVM;
1859	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1860	AssertPtrNull(pszFilename);
1861	AssertPtrNull(pStreamOps);
1862	AssertPtrNull(pfnProgress);
1863
1864	/*
1865	* Change the state and perform the load.
1866	*
1867	* Always perform a relocation round afterwards to make sure hypervisor
1868	* selectors and such are correct.
1869	*/
1870	int rc = vmR3TrySetState(pVM, "VMR3Load", 2,
1871	VMSTATE_LOADING, VMSTATE_CREATED,
1872	VMSTATE_LOADING, VMSTATE_SUSPENDED);
1873	if (RT_FAILURE(rc))
1874	return rc;
1875
1876	pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting;
1877
1878	uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pUVM);
1879	rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser);
1880	if (RT_SUCCESS(rc))
1881	{
1882	VMR3Relocate(pVM, 0 /offDelta/);
1883	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING);
1884	}
1885	else
1886	{
1887	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1888	vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING);
1889
1890	if (cErrorsPriorToSave == VMR3GetErrorCount(pUVM))
1891	rc = VMSetError(pVM, rc, RT_SRC_POS,
1892	N_("Unable to restore the virtual machine's saved state from '%s'. "
1893	"It may be damaged or from an older version of VirtualBox. "
1894	"Please discard the saved state before starting the virtual machine"),
1895	pszFilename);
1896	}
1897
1898	return rc;
1899	}
1900
1901
1902	/**
1903	* Loads a VM state into a newly created VM or a one that is suspended.
1904	*
1905	* To restore a saved state on VM startup, call this function and then resume
1906	* the VM instead of powering it on.
1907	*
1908	* @returns VBox status code.
1909	*
1910	* @param pUVM The user mode VM structure.
1911	* @param pszFilename The name of the save state file.
1912	* @param pfnProgress Progress callback. Optional.
1913	* @param pvUser User argument for the progress callback.
1914	*
1915	* @thread Any thread.
1916	* @vmstate Created, Suspended
1917	* @vmstateto Loading+Suspended
1918	*/
1919	VMMR3DECL(int) VMR3LoadFromFile(PUVM pUVM, const char pszFilename, PFNVMPROGRESS pfnProgress, void pvUser)
1920	{
1921	LogFlow(("VMR3LoadFromFile: pUVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n",
1922	pUVM, pszFilename, pszFilename, pfnProgress, pvUser));
1923
1924	/*
1925	* Validate input.
1926	*/
1927	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1928	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1929
1930	/*
1931	* Forward the request to EMT(0). No need to setup a rendezvous here
1932	* since there is no execution taking place when this call is allowed.
1933	*/
1934	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1935	pUVM, pszFilename, (uintptr_t)NULL /pStreamOps/, (uintptr_t)NULL /pvStreamOpsUser/,
1936	pfnProgress, pvUser, false /fTeleporting/);
1937	LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc));
1938	return rc;
1939	}
1940
1941
1942	/**
1943	* VMR3LoadFromFile for arbitrary file streams.
1944	*
1945	* @returns VBox status code.
1946	*
1947	* @param pUVM Pointer to the VM.
1948	* @param pStreamOps The stream methods.
1949	* @param pvStreamOpsUser The user argument to the stream methods.
1950	* @param pfnProgress Progress callback. Optional.
1951	* @param pvProgressUser User argument for the progress callback.
1952	* @param fTeleporting Flag whether this call is part of a teleportation operation.
1953	*
1954	* @thread Any thread.
1955	* @vmstate Created, Suspended
1956	* @vmstateto Loading+Suspended
1957	*/
1958	VMMR3DECL(int) VMR3LoadFromStream(PUVM pUVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1959	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1960	{
1961	LogFlow(("VMR3LoadFromStream: pUVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1962	pUVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1963
1964	/*
1965	* Validate input.
1966	*/
1967	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
1968	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1969
1970	/*
1971	* Forward the request to EMT(0). No need to setup a rendezvous here
1972	* since there is no execution taking place when this call is allowed.
1973	*/
1974	int rc = VMR3ReqCallWaitU(pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1975	pUVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, pfnProgress,
1976	pvProgressUser, fTeleporting);
1977	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
1978	return rc;
1979	}
1980
1981
1982	/**
1983	* EMT rendezvous worker for VMR3PowerOff.
1984	*
1985	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict
1986	* return code, see FNVMMEMTRENDEZVOUS.)
1987	*
1988	* @param pVM The cross context VM structure.
1989	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
1990	* @param pvUser Ignored.
1991	*/
1992	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser)
1993	{
1994	LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1995	Assert(!pvUser); NOREF(pvUser);
1996
1997	/*
1998	* The first EMT thru here will change the state to PoweringOff.
1999	*/
2000	if (pVCpu->idCpu == pVM->cCpus - 1)
2001	{
2002	int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 11,
2003	VMSTATE_POWERING_OFF, VMSTATE_RUNNING, /* 1 */
2004	VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, /* 2 */
2005	VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, /* 3 */
2006	VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, /* 4 */
2007	VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, /* 5 */
2008	VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, /* 6 */
2009	VMSTATE_POWERING_OFF, VMSTATE_CREATED, /* 7 / /* @todo update the diagram! */
2010	VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, /* 8 */
2011	VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, /* 9 */
2012	VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS,/* 10 */
2013	VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); /* 11 */
2014	if (RT_FAILURE(rc))
2015	return rc;
2016	if (rc >= 7)
2017	SSMR3Cancel(pVM->pUVM);
2018	}
2019
2020	/*
2021	* Check the state.
2022	*/
2023	VMSTATE enmVMState = VMR3GetState(pVM);
2024	AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF
2025	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
2026	("%s\n", VMR3GetStateName(enmVMState)),
2027	VERR_VM_INVALID_VM_STATE);
2028
2029	/*
2030	* EMT(0) does the actual power off work here after all the other EMTs
2031	* have been thru and entered the STOPPED state.
2032	*/
2033	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED);
2034	if (pVCpu->idCpu == 0)
2035	{
2036	/*
2037	* For debugging purposes, we will log a summary of the guest state at this point.
2038	*/
2039	if (enmVMState != VMSTATE_GURU_MEDITATION)
2040	{
2041	/** @todo make the state dumping at VMR3PowerOff optional. */
2042	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2043	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2044	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2045	RTLogRelPrintf("***\n");
2046	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2047	RTLogRelPrintf("***\n");
2048	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2049	RTLogRelPrintf("***\n");
2050	DBGFR3Info(pVM->pUVM, "activetimers", NULL, DBGFR3InfoLogRelHlp());
2051	RTLogRelPrintf("***\n");
2052	DBGFR3Info(pVM->pUVM, "gdt", NULL, DBGFR3InfoLogRelHlp());
2053	/** @todo dump guest call stack. */
2054	RTLogRelSetBuffering(fOldBuffered);
2055	RTLogRelPrintf("************ End of Guest state at power off *************\n");
2056	}
2057
2058	/*
2059	* Perform the power off notifications and advance the state to
2060	* Off or OffLS.
2061	*/
2062	PDMR3PowerOff(pVM);
2063	DBGFR3PowerOff(pVM);
2064
2065	PUVM pUVM = pVM->pUVM;
2066	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2067	enmVMState = pVM->enmVMState;
2068	if (enmVMState == VMSTATE_POWERING_OFF_LS)
2069	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS, false /fSetRatherThanClearFF/);
2070	else
2071	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF, false /fSetRatherThanClearFF/);
2072	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2073	}
2074	else if (enmVMState != VMSTATE_GURU_MEDITATION)
2075	{
2076	/** @todo make the state dumping at VMR3PowerOff optional. */
2077	bool fOldBuffered = RTLogRelSetBuffering(true /fBuffered/);
2078	RTLogRelPrintf("**************** Guest state at power off for VCpu %u ****************\n", pVCpu->idCpu);
2079	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2080	RTLogRelPrintf("***\n");
2081	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "cpumguesthwvirt", "verbose", DBGFR3InfoLogRelHlp());
2082	RTLogRelPrintf("***\n");
2083	DBGFR3InfoEx(pVM->pUVM, pVCpu->idCpu, "mode", NULL, DBGFR3InfoLogRelHlp());
2084	RTLogRelPrintf("***\n");
2085	RTLogRelSetBuffering(fOldBuffered);
2086	RTLogRelPrintf("************ End of Guest state at power off for VCpu %u *************\n", pVCpu->idCpu);
2087	}
2088
2089	return VINF_EM_OFF;
2090	}
2091
2092
2093	/**
2094	* Power off the VM.
2095	*
2096	* @returns VBox status code. When called on EMT, this will be a strict status
2097	* code that has to be propagated up the call stack.
2098	*
2099	* @param pUVM The handle of the VM to be powered off.
2100	*
2101	* @thread Any thread.
2102	* @vmstate Suspended, Running, Guru Meditation, Load Failure
2103	* @vmstateto Off or OffLS
2104	*/
2105	VMMR3DECL(int) VMR3PowerOff(PUVM pUVM)
2106	{
2107	LogFlow(("VMR3PowerOff: pUVM=%p\n", pUVM));
2108	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2109	PVM pVM = pUVM->pVM;
2110	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2111
2112	/*
2113	* Gather all the EMTs to make sure there are no races before
2114	* changing the VM state.
2115	*/
2116	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2117	vmR3PowerOff, NULL);
2118	LogFlow(("VMR3PowerOff: returns %Rrc\n", rc));
2119	return rc;
2120	}
2121
2122
2123	/**
2124	* Destroys the VM.
2125	*
2126	* The VM must be powered off (or never really powered on) to call this
2127	* function. The VM handle is destroyed and can no longer be used up successful
2128	* return.
2129	*
2130	* @returns VBox status code.
2131	*
2132	* @param pUVM The user mode VM handle.
2133	*
2134	* @thread Any none emulation thread.
2135	* @vmstate Off, Created
2136	* @vmstateto N/A
2137	*/
2138	VMMR3DECL(int) VMR3Destroy(PUVM pUVM)
2139	{
2140	LogFlow(("VMR3Destroy: pUVM=%p\n", pUVM));
2141
2142	/*
2143	* Validate input.
2144	*/
2145	if (!pUVM)
2146	return VERR_INVALID_VM_HANDLE;
2147	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2148	PVM pVM = pUVM->pVM;
2149	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2150	AssertLogRelReturn(!VM_IS_EMT(pVM), VERR_VM_THREAD_IS_EMT);
2151
2152	/*
2153	* Change VM state to destroying and aall vmR3Destroy on each of the EMTs
2154	* ending with EMT(0) doing the bulk of the cleanup.
2155	*/
2156	int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF);
2157	if (RT_FAILURE(rc))
2158	return rc;
2159
2160	rc = VMR3ReqCallWait(pVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM);
2161	AssertLogRelRC(rc);
2162
2163	/*
2164	* Wait for EMTs to quit and destroy the UVM.
2165	*/
2166	vmR3DestroyUVM(pUVM, 30000);
2167
2168	LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n"));
2169	return VINF_SUCCESS;
2170	}
2171
2172
2173	/**
2174	* Internal destruction worker.
2175	*
2176	* This is either called from VMR3Destroy via VMR3ReqCallU or from
2177	* vmR3EmulationThreadWithId when EMT(0) terminates after having called
2178	* VMR3Destroy().
2179	*
2180	* When called on EMT(0), it will performed the great bulk of the destruction.
2181	* When called on the other EMTs, they will do nothing and the whole purpose is
2182	* to return VINF_EM_TERMINATE so they break out of their run loops.
2183	*
2184	* @returns VINF_EM_TERMINATE.
2185	* @param pVM The cross context VM structure.
2186	*/
2187	DECLCALLBACK(int) vmR3Destroy(PVM pVM)
2188	{
2189	PUVM pUVM = pVM->pUVM;
2190	PVMCPU pVCpu = VMMGetCpu(pVM);
2191	Assert(pVCpu);
2192	LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu));
2193
2194	/*
2195	* Only VCPU 0 does the full cleanup (last).
2196	*/
2197	if (pVCpu->idCpu == 0)
2198	{
2199	/*
2200	* Dump statistics to the log.
2201	*/
2202	#if defined(VBOX_WITH_STATISTICS) \|\| defined(LOG_ENABLED)
2203	RTLogFlags(NULL, "nodisabled nobuffered");
2204	#endif
2205	//#ifdef VBOX_WITH_STATISTICS
2206	// STAMR3Dump(pUVM, "*");
2207	//#else
2208	LogRel(("*********************** Statistics ***********************\n"));
2209	STAMR3DumpToReleaseLog(pUVM, "*");
2210	LogRel(("******************* End of statistics ********************\n"));
2211	//#endif
2212
2213	/*
2214	* Destroy the VM components.
2215	*/
2216	int rc = TMR3Term(pVM);
2217	AssertRC(rc);
2218	#ifdef VBOX_WITH_DEBUGGER
2219	rc = DBGCIoTerminate(pUVM, pUVM->vm.s.pvDBGC);
2220	pUVM->vm.s.pvDBGC = NULL;
2221	#endif
2222	AssertRC(rc);
2223	rc = PDMR3Term(pVM);
2224	AssertRC(rc);
2225	rc = GIMR3Term(pVM);
2226	AssertRC(rc);
2227	rc = DBGFR3Term(pVM);
2228	AssertRC(rc);
2229	rc = IEMR3Term(pVM);
2230	AssertRC(rc);
2231	rc = EMR3Term(pVM);
2232	AssertRC(rc);
2233	rc = IOMR3Term(pVM);
2234	AssertRC(rc);
2235	rc = TRPMR3Term(pVM);
2236	AssertRC(rc);
2237	#if !defined(VBOX_VMM_TARGET_ARMV8)
2238	rc = SELMR3Term(pVM);
2239	AssertRC(rc);
2240	#endif
2241	rc = HMR3Term(pVM);
2242	AssertRC(rc);
2243	rc = NEMR3Term(pVM);
2244	AssertRC(rc);
2245	rc = PGMR3Term(pVM);
2246	AssertRC(rc);
2247	rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */
2248	AssertRC(rc);
2249	rc = CPUMR3Term(pVM);
2250	AssertRC(rc);
2251	SSMR3Term(pVM);
2252	rc = PDMR3CritSectBothTerm(pVM);
2253	AssertRC(rc);
2254	rc = MMR3Term(pVM);
2255	AssertRC(rc);
2256
2257	/*
2258	* We're done, tell the other EMTs to quit.
2259	*/
2260	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2261	ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2262	LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE));
2263	}
2264
2265	/*
2266	* Decrement the active EMT count here.
2267	*/
2268	PUVMCPU pUVCpu = &pUVM->aCpus[pVCpu->idCpu];
2269	if (!pUVCpu->vm.s.fBeenThruVmDestroy)
2270	{
2271	pUVCpu->vm.s.fBeenThruVmDestroy = true;
2272	ASMAtomicDecU32(&pUVM->vm.s.cActiveEmts);
2273	}
2274	else
2275	AssertFailed();
2276
2277	return VINF_EM_TERMINATE;
2278	}
2279
2280
2281	/**
2282	* Destroys the UVM portion.
2283	*
2284	* This is called as the final step in the VM destruction or as the cleanup
2285	* in case of a creation failure.
2286	*
2287	* @param pUVM The user mode VM structure.
2288	* @param cMilliesEMTWait The number of milliseconds to wait for the emulation
2289	* threads.
2290	*/
2291	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait)
2292	{
2293	/*
2294	* Signal termination of each the emulation threads and
2295	* wait for them to complete.
2296	*/
2297	/* Signal them - in reverse order since EMT(0) waits for the others. */
2298	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2299	if (pUVM->pVM)
2300	VM_FF_SET(pUVM->pVM, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2301	VMCPUID iCpu = pUVM->cCpus;
2302	while (iCpu-- > 0)
2303	{
2304	VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
2305	RTSemEventSignal(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2306	}
2307
2308	/* Wait for EMT(0), it in turn waits for the rest. */
2309	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2310
2311	RTTHREAD const hSelf = RTThreadSelf();
2312	RTTHREAD hThread = pUVM->aCpus[0].vm.s.ThreadEMT;
2313	if ( hThread != NIL_RTTHREAD
2314	&& hThread != hSelf)
2315	{
2316	int rc2 = RTThreadWait(hThread, RT_MAX(cMilliesEMTWait, 2000), NULL);
2317	if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */
2318	rc2 = RTThreadWait(hThread, 1000, NULL);
2319	AssertLogRelMsgRC(rc2, ("iCpu=0 rc=%Rrc\n", rc2));
2320	if (RT_SUCCESS(rc2))
2321	pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD;
2322	}
2323
2324	/* Just in case we're in a weird failure situation w/o EMT(0) to do the
2325	waiting, wait the other EMTs too. */
2326	for (iCpu = 1; iCpu < pUVM->cCpus; iCpu++)
2327	{
2328	ASMAtomicXchgHandle(&pUVM->aCpus[iCpu].vm.s.ThreadEMT, NIL_RTTHREAD, &hThread);
2329	if (hThread != NIL_RTTHREAD)
2330	{
2331	if (hThread != hSelf)
2332	{
2333	int rc2 = RTThreadWait(hThread, 250 /ms/, NULL);
2334	AssertLogRelMsgRC(rc2, ("iCpu=%u rc=%Rrc\n", iCpu, rc2));
2335	if (RT_SUCCESS(rc2))
2336	continue;
2337	}
2338	pUVM->aCpus[iCpu].vm.s.ThreadEMT = hThread;
2339	}
2340	}
2341
2342	/* Cleanup the semaphores. */
2343	iCpu = pUVM->cCpus;
2344	while (iCpu-- > 0)
2345	{
2346	RTSemEventDestroy(pUVM->aCpus[iCpu].vm.s.EventSemWait);
2347	pUVM->aCpus[iCpu].vm.s.EventSemWait = NIL_RTSEMEVENT;
2348	}
2349
2350	/*
2351	* Free the event semaphores associated with the request packets.
2352	*/
2353	unsigned cReqs = 0;
2354	for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++)
2355	{
2356	PVMREQ pReq = pUVM->vm.s.apReqFree[i];
2357	pUVM->vm.s.apReqFree[i] = NULL;
2358	for (; pReq; pReq = pReq->pNext, cReqs++)
2359	{
2360	pReq->enmState = VMREQSTATE_INVALID;
2361	RTSemEventDestroy(pReq->EventSem);
2362	}
2363	}
2364	Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs);
2365
2366	/*
2367	* Kill all queued requests. (There really shouldn't be any!)
2368	*/
2369	for (unsigned i = 0; i < 10; i++)
2370	{
2371	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pPriorityReqs, NULL, PVMREQ);
2372	if (!pReqHead)
2373	{
2374	pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pNormalReqs, NULL, PVMREQ);
2375	if (!pReqHead)
2376	break;
2377	}
2378	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2379
2380	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2381	{
2382	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2383	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2384	RTSemEventSignal(pReq->EventSem);
2385	RTThreadSleep(2);
2386	RTSemEventDestroy(pReq->EventSem);
2387	}
2388	/* give them a chance to respond before we free the request memory. */
2389	RTThreadSleep(32);
2390	}
2391
2392	/*
2393	* Now all queued VCPU requests (again, there shouldn't be any).
2394	*/
2395	for (VMCPUID idCpu = 0; idCpu < pUVM->cCpus; idCpu++)
2396	{
2397	PUVMCPU pUVCpu = &pUVM->aCpus[idCpu];
2398
2399	for (unsigned i = 0; i < 10; i++)
2400	{
2401	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pPriorityReqs, NULL, PVMREQ);
2402	if (!pReqHead)
2403	{
2404	pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pNormalReqs, NULL, PVMREQ);
2405	if (!pReqHead)
2406	break;
2407	}
2408	AssertLogRelMsgFailed(("Requests pending! VMR3Destroy caller has to serialize this.\n"));
2409
2410	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2411	{
2412	ASMAtomicUoWriteS32(&pReq->iStatus, VERR_VM_REQUEST_KILLED);
2413	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2414	RTSemEventSignal(pReq->EventSem);
2415	RTThreadSleep(2);
2416	RTSemEventDestroy(pReq->EventSem);
2417	}
2418	/* give them a chance to respond before we free the request memory. */
2419	RTThreadSleep(32);
2420	}
2421	}
2422
2423	/*
2424	* Make sure the VMMR0.r0 module and whatever else is unloaded.
2425	*/
2426	PDMR3TermUVM(pUVM);
2427
2428	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
2429	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
2430
2431	/*
2432	* Terminate the support library if initialized.
2433	*/
2434	if (pUVM->vm.s.pSession)
2435	{
2436	int rc = SUPR3Term(false /fForced/);
2437	AssertRC(rc);
2438	pUVM->vm.s.pSession = NIL_RTR0PTR;
2439	}
2440
2441	/*
2442	* Release the UVM structure reference.
2443	*/
2444	VMR3ReleaseUVM(pUVM);
2445
2446	/*
2447	* Clean up and flush logs.
2448	*/
2449	RTLogFlush(NULL);
2450	}
2451
2452
2453	/**
2454	* Worker which checks integrity of some internal structures.
2455	* This is yet another attempt to track down that AVL tree crash.
2456	*/
2457	static void vmR3CheckIntegrity(PVM pVM)
2458	{
2459	#ifdef VBOX_STRICT
2460	int rc = PGMR3CheckIntegrity(pVM);
2461	AssertReleaseRC(rc);
2462	#else
2463	RT_NOREF_PV(pVM);
2464	#endif
2465	}
2466
2467
2468	/**
2469	* EMT rendezvous worker for VMR3ResetFF for doing soft/warm reset.
2470	*
2471	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESCHEDULE.
2472	* (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
2473	*
2474	* @param pVM The cross context VM structure.
2475	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2476	* @param pvUser The reset flags.
2477	*/
2478	static DECLCALLBACK(VBOXSTRICTRC) vmR3SoftReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2479	{
2480	uint32_t fResetFlags = (uint32_t )pvUser;
2481
2482
2483	/*
2484	* The first EMT will try change the state to resetting. If this fails,
2485	* we won't get called for the other EMTs.
2486	*/
2487	if (pVCpu->idCpu == pVM->cCpus - 1)
2488	{
2489	int rc = vmR3TrySetState(pVM, "vmR3ResetSoft", 3,
2490	VMSTATE_SOFT_RESETTING, VMSTATE_RUNNING,
2491	VMSTATE_SOFT_RESETTING, VMSTATE_SUSPENDED,
2492	VMSTATE_SOFT_RESETTING_LS, VMSTATE_RUNNING_LS);
2493	if (RT_FAILURE(rc))
2494	return rc;
2495	pVM->vm.s.cResets++;
2496	pVM->vm.s.cSoftResets++;
2497	}
2498
2499	/*
2500	* Check the state.
2501	*/
2502	VMSTATE enmVMState = VMR3GetState(pVM);
2503	AssertLogRelMsgReturn( enmVMState == VMSTATE_SOFT_RESETTING
2504	\|\| enmVMState == VMSTATE_SOFT_RESETTING_LS,
2505	("%s\n", VMR3GetStateName(enmVMState)),
2506	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2507
2508	/*
2509	* EMT(0) does the full cleanup after all the other EMTs has been
2510	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2511	*
2512	* Because there are per-cpu reset routines and order may/is important,
2513	* the following sequence looks a bit ugly...
2514	*/
2515
2516	/* Reset the VCpu state. */
2517	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2518
2519	/*
2520	* Soft reset the VM components.
2521	*/
2522	if (pVCpu->idCpu == 0)
2523	{
2524	PDMR3SoftReset(pVM, fResetFlags);
2525	TRPMR3Reset(pVM);
2526	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2527	EMR3Reset(pVM);
2528	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2529	NEMR3Reset(pVM);
2530
2531	/*
2532	* Since EMT(0) is the last to go thru here, it will advance the state.
2533	* (Unlike vmR3HardReset we won't be doing any suspending of live
2534	* migration VMs here since memory is unchanged.)
2535	*/
2536	PUVM pUVM = pVM->pUVM;
2537	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2538	enmVMState = pVM->enmVMState;
2539	if (enmVMState == VMSTATE_SOFT_RESETTING)
2540	{
2541	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2542	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2543	else
2544	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_SOFT_RESETTING, false /fSetRatherThanClearFF/);
2545	}
2546	else
2547	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING_LS, VMSTATE_SOFT_RESETTING_LS, false /fSetRatherThanClearFF/);
2548	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2549	}
2550
2551	return VINF_EM_RESCHEDULE;
2552	}
2553
2554
2555	/**
2556	* EMT rendezvous worker for VMR3Reset and VMR3ResetFF.
2557	*
2558	* This is called by the emulation threads as a response to the reset request
2559	* issued by VMR3Reset().
2560	*
2561	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This
2562	* is a strict return code, see FNVMMEMTRENDEZVOUS.)
2563	*
2564	* @param pVM The cross context VM structure.
2565	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
2566	* @param pvUser Ignored.
2567	*/
2568	static DECLCALLBACK(VBOXSTRICTRC) vmR3HardReset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2569	{
2570	Assert(!pvUser); NOREF(pvUser);
2571
2572	/*
2573	* The first EMT will try change the state to resetting. If this fails,
2574	* we won't get called for the other EMTs.
2575	*/
2576	if (pVCpu->idCpu == pVM->cCpus - 1)
2577	{
2578	int rc = vmR3TrySetState(pVM, "vmR3HardReset", 3,
2579	VMSTATE_RESETTING, VMSTATE_RUNNING,
2580	VMSTATE_RESETTING, VMSTATE_SUSPENDED,
2581	VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS);
2582	if (RT_FAILURE(rc))
2583	return rc;
2584	pVM->vm.s.cResets++;
2585	pVM->vm.s.cHardResets++;
2586	}
2587
2588	/*
2589	* Check the state.
2590	*/
2591	VMSTATE enmVMState = VMR3GetState(pVM);
2592	AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING
2593	\|\| enmVMState == VMSTATE_RESETTING_LS,
2594	("%s\n", VMR3GetStateName(enmVMState)),
2595	VERR_VM_UNEXPECTED_UNSTABLE_STATE);
2596
2597	/*
2598	* EMT(0) does the full cleanup after all the other EMTs has been
2599	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2600	*
2601	* Because there are per-cpu reset routines and order may/is important,
2602	* the following sequence looks a bit ugly...
2603	*/
2604	if (pVCpu->idCpu == 0)
2605	vmR3CheckIntegrity(pVM);
2606
2607	/* Reset the VCpu state. */
2608	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2609
2610	/* Clear all pending forced actions. */
2611	VMCPU_FF_CLEAR_MASK(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST);
2612
2613	/*
2614	* Reset the VM components.
2615	*/
2616	if (pVCpu->idCpu == 0)
2617	{
2618	GIMR3Reset(pVM); /* This must come before PDM and TM. */
2619	PDMR3Reset(pVM);
2620	PGMR3Reset(pVM);
2621	#if !defined(VBOX_VMM_TARGET_ARMV8)
2622	SELMR3Reset(pVM);
2623	#endif
2624	TRPMR3Reset(pVM);
2625	IOMR3Reset(pVM);
2626	CPUMR3Reset(pVM); /* This must come after PDM (due to APIC base MSR caching). */
2627	TMR3Reset(pVM);
2628	EMR3Reset(pVM);
2629	HMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2630	NEMR3Reset(pVM);
2631
2632	/*
2633	* Do memory setup.
2634	*/
2635	PGMR3MemSetup(pVM, true /fAtReset/);
2636	PDMR3MemSetup(pVM, true /fAtReset/);
2637
2638	/*
2639	* Since EMT(0) is the last to go thru here, it will advance the state.
2640	* When a live save is active, we will move on to SuspendingLS but
2641	* leave it for VMR3Reset to do the actual suspending due to deadlock risks.
2642	*/
2643	PUVM pUVM = pVM->pUVM;
2644	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2645	enmVMState = pVM->enmVMState;
2646	if (enmVMState == VMSTATE_RESETTING)
2647	{
2648	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2649	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2650	else
2651	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING, false /fSetRatherThanClearFF/);
2652	}
2653	else
2654	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS, false /fSetRatherThanClearFF/);
2655	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2656
2657	vmR3CheckIntegrity(pVM);
2658
2659	/*
2660	* Do the suspend bit as well.
2661	* It only requires some EMT(0) work at present.
2662	*/
2663	if (enmVMState != VMSTATE_RESETTING)
2664	{
2665	vmR3SuspendDoWork(pVM);
2666	vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
2667	}
2668	}
2669
2670	return enmVMState == VMSTATE_RESETTING
2671	? VINF_EM_RESET
2672	: 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. */
2673	}
2674
2675
2676	/**
2677	* Internal worker for VMR3Reset, VMR3ResetFF, VMR3TripleFault.
2678	*
2679	* @returns VBox status code.
2680	* @param pVM The cross context VM structure.
2681	* @param fHardReset Whether it's a hard reset or not.
2682	* @param fResetFlags The reset flags (PDMVMRESET_F_XXX).
2683	*/
2684	static VBOXSTRICTRC vmR3ResetCommon(PVM pVM, bool fHardReset, uint32_t fResetFlags)
2685	{
2686	LogFlow(("vmR3ResetCommon: fHardReset=%RTbool fResetFlags=%#x\n", fHardReset, fResetFlags));
2687	int rc;
2688	if (fHardReset)
2689	{
2690	/*
2691	* Hard reset.
2692	*/
2693	/* Check whether we're supposed to power off instead of resetting. */
2694	if (pVM->vm.s.fPowerOffInsteadOfReset)
2695	{
2696	PUVM pUVM = pVM->pUVM;
2697	if ( pUVM->pVmm2UserMethods
2698	&& pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff)
2699	pUVM->pVmm2UserMethods->pfnNotifyResetTurnedIntoPowerOff(pUVM->pVmm2UserMethods, pUVM);
2700	return VMR3PowerOff(pUVM);
2701	}
2702
2703	/* Gather all the EMTs to make sure there are no races before changing
2704	the VM state. */
2705	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2706	vmR3HardReset, NULL);
2707	}
2708	else
2709	{
2710	/*
2711	* Soft reset. Since we only support this with a single CPU active,
2712	* we must be on EMT #0 here.
2713	*/
2714	VM_ASSERT_EMT0(pVM);
2715	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2716	vmR3SoftReset, &fResetFlags);
2717	}
2718
2719	LogFlow(("vmR3ResetCommon: returns %Rrc\n", rc));
2720	return rc;
2721	}
2722
2723
2724
2725	/**
2726	* Reset the current VM.
2727	*
2728	* @returns VBox status code.
2729	* @param pUVM The VM to reset.
2730	*/
2731	VMMR3DECL(int) VMR3Reset(PUVM pUVM)
2732	{
2733	LogFlow(("VMR3Reset:\n"));
2734	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
2735	PVM pVM = pUVM->pVM;
2736	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2737
2738	return VBOXSTRICTRC_VAL(vmR3ResetCommon(pVM, true, 0));
2739	}
2740
2741
2742	/**
2743	* Handle the reset force flag or triple fault.
2744	*
2745	* This handles both soft and hard resets (see PDMVMRESET_F_XXX).
2746	*
2747	* @returns VBox status code.
2748	* @param pVM The cross context VM structure.
2749	* @thread EMT
2750	*
2751	* @remarks Caller is expected to clear the VM_FF_RESET force flag.
2752	*/
2753	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetFF(PVM pVM)
2754	{
2755	LogFlow(("VMR3ResetFF:\n"));
2756
2757	/*
2758	* First consult the firmware on whether this is a hard or soft reset.
2759	*/
2760	uint32_t fResetFlags;
2761	bool fHardReset = PDMR3GetResetInfo(pVM, 0 /fOverride/, &fResetFlags);
2762	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
2763	}
2764
2765
2766	/**
2767	* For handling a CPU reset on triple fault.
2768	*
2769	* According to one mainboard manual, a CPU triple fault causes the 286 CPU to
2770	* send a SHUTDOWN signal to the chipset. The chipset responds by sending a
2771	* RESET signal to the CPU. So, it should be very similar to a soft/warm reset.
2772	*
2773	* @returns VBox status code.
2774	* @param pVM The cross context VM structure.
2775	* @thread EMT
2776	*/
2777	VMMR3_INT_DECL(VBOXSTRICTRC) VMR3ResetTripleFault(PVM pVM)
2778	{
2779	LogFlow(("VMR3ResetTripleFault:\n"));
2780
2781	/*
2782	* First consult the firmware on whether this is a hard or soft reset.
2783	*/
2784	uint32_t fResetFlags;
2785	bool fHardReset = PDMR3GetResetInfo(pVM, PDMVMRESET_F_TRIPLE_FAULT, &fResetFlags);
2786	return vmR3ResetCommon(pVM, fHardReset, fResetFlags);
2787	}
2788
2789
2790	/**
2791	* Gets the user mode VM structure pointer given Pointer to the VM.
2792	*
2793	* @returns Pointer to the user mode VM structure on success. NULL if @a pVM is
2794	* invalid (asserted).
2795	* @param pVM The cross context VM structure.
2796	* @sa VMR3GetVM, VMR3RetainUVM
2797	*/
2798	VMMR3DECL(PUVM) VMR3GetUVM(PVM pVM)
2799	{
2800	VM_ASSERT_VALID_EXT_RETURN(pVM, NULL);
2801	return pVM->pUVM;
2802	}
2803
2804
2805	/**
2806	* Gets the shared VM structure pointer given the pointer to the user mode VM
2807	* structure.
2808	*
2809	* @returns Pointer to the VM.
2810	* NULL if @a pUVM is invalid (asserted) or if no shared VM structure
2811	* is currently associated with it.
2812	* @param pUVM The user mode VM handle.
2813	* @sa VMR3GetUVM
2814	*/
2815	VMMR3DECL(PVM) VMR3GetVM(PUVM pUVM)
2816	{
2817	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2818	return pUVM->pVM;
2819	}
2820
2821
2822	/**
2823	* Retain the user mode VM handle.
2824	*
2825	* @returns Reference count.
2826	* UINT32_MAX if @a pUVM is invalid.
2827	*
2828	* @param pUVM The user mode VM handle.
2829	* @sa VMR3ReleaseUVM
2830	*/
2831	VMMR3DECL(uint32_t) VMR3RetainUVM(PUVM pUVM)
2832	{
2833	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
2834	uint32_t cRefs = ASMAtomicIncU32(&pUVM->vm.s.cUvmRefs);
2835	AssertMsg(cRefs > 0 && cRefs < _64K, ("%u\n", cRefs));
2836	return cRefs;
2837	}
2838
2839
2840	/**
2841	* Does the final release of the UVM structure.
2842	*
2843	* @param pUVM The user mode VM handle.
2844	*/
2845	static void vmR3DoReleaseUVM(PUVM pUVM)
2846	{
2847	/*
2848	* Free the UVM.
2849	*/
2850	Assert(!pUVM->pVM);
2851
2852	MMR3HeapFree(pUVM->vm.s.pszName);
2853	pUVM->vm.s.pszName = NULL;
2854
2855	MMR3TermUVM(pUVM);
2856	STAMR3TermUVM(pUVM);
2857
2858	ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX);
2859	RTTlsFree(pUVM->vm.s.idxTLS);
2860	RTMemPageFree(pUVM, RT_UOFFSETOF_DYN(UVM, aCpus[pUVM->cCpus]));
2861	}
2862
2863
2864	/**
2865	* Releases a refernece to the mode VM handle.
2866	*
2867	* @returns The new reference count, 0 if destroyed.
2868	* UINT32_MAX if @a pUVM is invalid.
2869	*
2870	* @param pUVM The user mode VM handle.
2871	* @sa VMR3RetainUVM
2872	*/
2873	VMMR3DECL(uint32_t) VMR3ReleaseUVM(PUVM pUVM)
2874	{
2875	if (!pUVM)
2876	return 0;
2877	UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
2878	uint32_t cRefs = ASMAtomicDecU32(&pUVM->vm.s.cUvmRefs);
2879	if (!cRefs)
2880	vmR3DoReleaseUVM(pUVM);
2881	else
2882	AssertMsg(cRefs < _64K, ("%u\n", cRefs));
2883	return cRefs;
2884	}
2885
2886
2887	/**
2888	* Gets the VM name.
2889	*
2890	* @returns Pointer to a read-only string containing the name. NULL if called
2891	* too early.
2892	* @param pUVM The user mode VM handle.
2893	*/
2894	VMMR3DECL(const char *) VMR3GetName(PUVM pUVM)
2895	{
2896	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2897	return pUVM->vm.s.pszName;
2898	}
2899
2900
2901	/**
2902	* Gets the VM UUID.
2903	*
2904	* @returns pUuid on success, NULL on failure.
2905	* @param pUVM The user mode VM handle.
2906	* @param pUuid Where to store the UUID.
2907	*/
2908	VMMR3DECL(PRTUUID) VMR3GetUuid(PUVM pUVM, PRTUUID pUuid)
2909	{
2910	UVM_ASSERT_VALID_EXT_RETURN(pUVM, NULL);
2911	AssertPtrReturn(pUuid, NULL);
2912
2913	*pUuid = pUVM->vm.s.Uuid;
2914	return pUuid;
2915	}
2916
2917
2918	/**
2919	* Gets the current VM state.
2920	*
2921	* @returns The current VM state.
2922	* @param pVM The cross context VM structure.
2923	* @thread Any
2924	*/
2925	VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM)
2926	{
2927	AssertMsgReturn(RT_VALID_ALIGNED_PTR(pVM, HOST_PAGE_SIZE), ("%p\n", pVM), VMSTATE_TERMINATED);
2928	VMSTATE enmVMState = pVM->enmVMState;
2929	return enmVMState >= VMSTATE_CREATING && enmVMState <= VMSTATE_TERMINATED ? enmVMState : VMSTATE_TERMINATED;
2930	}
2931
2932
2933	/**
2934	* Gets the current VM state.
2935	*
2936	* @returns The current VM state.
2937	* @param pUVM The user-mode VM handle.
2938	* @thread Any
2939	*/
2940	VMMR3DECL(VMSTATE) VMR3GetStateU(PUVM pUVM)
2941	{
2942	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VMSTATE_TERMINATED);
2943	if (RT_UNLIKELY(!pUVM->pVM))
2944	return VMSTATE_TERMINATED;
2945	return pUVM->pVM->enmVMState;
2946	}
2947
2948
2949	/**
2950	* Gets the state name string for a VM state.
2951	*
2952	* @returns Pointer to the state name. (readonly)
2953	* @param enmState The state.
2954	*/
2955	VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState)
2956	{
2957	switch (enmState)
2958	{
2959	case VMSTATE_CREATING: return "CREATING";
2960	case VMSTATE_CREATED: return "CREATED";
2961	case VMSTATE_LOADING: return "LOADING";
2962	case VMSTATE_POWERING_ON: return "POWERING_ON";
2963	case VMSTATE_RESUMING: return "RESUMING";
2964	case VMSTATE_RUNNING: return "RUNNING";
2965	case VMSTATE_RUNNING_LS: return "RUNNING_LS";
2966	case VMSTATE_RESETTING: return "RESETTING";
2967	case VMSTATE_RESETTING_LS: return "RESETTING_LS";
2968	case VMSTATE_SOFT_RESETTING: return "SOFT_RESETTING";
2969	case VMSTATE_SOFT_RESETTING_LS: return "SOFT_RESETTING_LS";
2970	case VMSTATE_SUSPENDED: return "SUSPENDED";
2971	case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS";
2972	case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS";
2973	case VMSTATE_SUSPENDING: return "SUSPENDING";
2974	case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS";
2975	case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS";
2976	case VMSTATE_SAVING: return "SAVING";
2977	case VMSTATE_DEBUGGING: return "DEBUGGING";
2978	case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS";
2979	case VMSTATE_POWERING_OFF: return "POWERING_OFF";
2980	case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS";
2981	case VMSTATE_FATAL_ERROR: return "FATAL_ERROR";
2982	case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS";
2983	case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION";
2984	case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS";
2985	case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE";
2986	case VMSTATE_OFF: return "OFF";
2987	case VMSTATE_OFF_LS: return "OFF_LS";
2988	case VMSTATE_DESTROYING: return "DESTROYING";
2989	case VMSTATE_TERMINATED: return "TERMINATED";
2990
2991	default:
2992	AssertMsgFailed(("Unknown state %d\n", enmState));
2993	return "Unknown!\n";
2994	}
2995	}
2996
2997
2998	/**
2999	* Validates the state transition in strict builds.
3000	*
3001	* @returns true if valid, false if not.
3002	*
3003	* @param enmStateOld The old (current) state.
3004	* @param enmStateNew The proposed new state.
3005	*
3006	* @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE
3007	* diagram (under State Machine Diagram).
3008	*/
3009	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew)
3010	{
3011	#ifndef VBOX_STRICT
3012	RT_NOREF2(enmStateOld, enmStateNew);
3013	#else
3014	switch (enmStateOld)
3015	{
3016	case VMSTATE_CREATING:
3017	AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3018	break;
3019
3020	case VMSTATE_CREATED:
3021	AssertMsgReturn( enmStateNew == VMSTATE_LOADING
3022	\|\| enmStateNew == VMSTATE_POWERING_ON
3023	\|\| enmStateNew == VMSTATE_POWERING_OFF
3024	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3025	break;
3026
3027	case VMSTATE_LOADING:
3028	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3029	\|\| enmStateNew == VMSTATE_LOAD_FAILURE
3030	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3031	break;
3032
3033	case VMSTATE_POWERING_ON:
3034	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3035	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3036	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3037	break;
3038
3039	case VMSTATE_RESUMING:
3040	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3041	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
3042	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3043	break;
3044
3045	case VMSTATE_RUNNING:
3046	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3047	\|\| enmStateNew == VMSTATE_SUSPENDING
3048	\|\| enmStateNew == VMSTATE_RESETTING
3049	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3050	\|\| enmStateNew == VMSTATE_RUNNING_LS
3051	\|\| enmStateNew == VMSTATE_DEBUGGING
3052	\|\| enmStateNew == VMSTATE_FATAL_ERROR
3053	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
3054	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3055	break;
3056
3057	case VMSTATE_RUNNING_LS:
3058	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS
3059	\|\| enmStateNew == VMSTATE_SUSPENDING_LS
3060	\|\| enmStateNew == VMSTATE_SUSPENDING_EXT_LS
3061	\|\| enmStateNew == VMSTATE_RESETTING_LS
3062	\|\| enmStateNew == VMSTATE_SOFT_RESETTING_LS
3063	\|\| enmStateNew == VMSTATE_RUNNING
3064	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3065	\|\| enmStateNew == VMSTATE_FATAL_ERROR_LS
3066	\|\| enmStateNew == VMSTATE_GURU_MEDITATION_LS
3067	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3068	break;
3069
3070	case VMSTATE_RESETTING:
3071	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3072	break;
3073
3074	case VMSTATE_SOFT_RESETTING:
3075	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3076	break;
3077
3078	case VMSTATE_RESETTING_LS:
3079	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS
3080	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3081	break;
3082
3083	case VMSTATE_SOFT_RESETTING_LS:
3084	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING_LS
3085	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3086	break;
3087
3088	case VMSTATE_SUSPENDING:
3089	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3090	break;
3091
3092	case VMSTATE_SUSPENDING_LS:
3093	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3094	\|\| enmStateNew == VMSTATE_SUSPENDED_LS
3095	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3096	break;
3097
3098	case VMSTATE_SUSPENDING_EXT_LS:
3099	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
3100	\|\| enmStateNew == VMSTATE_SUSPENDED_EXT_LS
3101	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3102	break;
3103
3104	case VMSTATE_SUSPENDED:
3105	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3106	\|\| enmStateNew == VMSTATE_SAVING
3107	\|\| enmStateNew == VMSTATE_RESETTING
3108	\|\| enmStateNew == VMSTATE_SOFT_RESETTING
3109	\|\| enmStateNew == VMSTATE_RESUMING
3110	\|\| enmStateNew == VMSTATE_LOADING
3111	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3112	break;
3113
3114	case VMSTATE_SUSPENDED_LS:
3115	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3116	\|\| enmStateNew == VMSTATE_SAVING
3117	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3118	break;
3119
3120	case VMSTATE_SUSPENDED_EXT_LS:
3121	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
3122	\|\| enmStateNew == VMSTATE_SAVING
3123	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3124	break;
3125
3126	case VMSTATE_SAVING:
3127	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3128	break;
3129
3130	case VMSTATE_DEBUGGING:
3131	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
3132	\|\| enmStateNew == VMSTATE_POWERING_OFF
3133	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3134	break;
3135
3136	case VMSTATE_DEBUGGING_LS:
3137	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3138	\|\| enmStateNew == VMSTATE_RUNNING_LS
3139	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3140	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3141	break;
3142
3143	case VMSTATE_POWERING_OFF:
3144	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3145	break;
3146
3147	case VMSTATE_POWERING_OFF_LS:
3148	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
3149	\|\| enmStateNew == VMSTATE_OFF_LS
3150	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3151	break;
3152
3153	case VMSTATE_OFF:
3154	AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3155	break;
3156
3157	case VMSTATE_OFF_LS:
3158	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3159	break;
3160
3161	case VMSTATE_FATAL_ERROR:
3162	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3163	break;
3164
3165	case VMSTATE_FATAL_ERROR_LS:
3166	AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR
3167	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3168	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3169	break;
3170
3171	case VMSTATE_GURU_MEDITATION:
3172	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3173	\|\| enmStateNew == VMSTATE_POWERING_OFF
3174	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3175	break;
3176
3177	case VMSTATE_GURU_MEDITATION_LS:
3178	AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION
3179	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3180	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3181	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3182	break;
3183
3184	case VMSTATE_LOAD_FAILURE:
3185	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3186	break;
3187
3188	case VMSTATE_DESTROYING:
3189	AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3190	break;
3191
3192	case VMSTATE_TERMINATED:
3193	default:
3194	AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3195	break;
3196	}
3197	#endif /* VBOX_STRICT */
3198	return true;
3199	}
3200
3201
3202	/**
3203	* Does the state change callouts.
3204	*
3205	* The caller owns the AtStateCritSect.
3206	*
3207	* @param pVM The cross context VM structure.
3208	* @param pUVM The UVM handle.
3209	* @param enmStateNew The New state.
3210	* @param enmStateOld The old state.
3211	*/
3212	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3213	{
3214	LogRel(("Changing the VM state from '%s' to '%s'\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3215
3216	for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext)
3217	{
3218	pCur->pfnAtState(pUVM, VMMR3GetVTable(), enmStateNew, enmStateOld, pCur->pvUser);
3219	if ( enmStateNew != VMSTATE_DESTROYING
3220	&& pVM->enmVMState == VMSTATE_DESTROYING)
3221	break;
3222	AssertMsg(pVM->enmVMState == enmStateNew,
3223	("You are not allowed to change the state while in the change callback, except "
3224	"from destroying the VM. There are restrictions in the way the state changes "
3225	"are propagated up to the EM execution loop and it makes the program flow very "
3226	"difficult to follow. (%s, expected %s, old %s)\n",
3227	VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew),
3228	VMR3GetStateName(enmStateOld)));
3229	}
3230	}
3231
3232
3233	/**
3234	* Sets the current VM state, with the AtStatCritSect already entered.
3235	*
3236	* @param pVM The cross context VM structure.
3237	* @param pUVM The UVM handle.
3238	* @param enmStateNew The new state.
3239	* @param enmStateOld The old state.
3240	* @param fSetRatherThanClearFF The usual behavior is to clear the
3241	* VM_FF_CHECK_VM_STATE force flag, but for
3242	* some transitions (-> guru) we need to kick
3243	* the other EMTs to stop what they're doing.
3244	*/
3245	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld, bool fSetRatherThanClearFF)
3246	{
3247	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3248
3249	AssertMsg(pVM->enmVMState == enmStateOld,
3250	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3251
3252	pUVM->vm.s.enmPrevVMState = enmStateOld;
3253	pVM->enmVMState = enmStateNew;
3254
3255	if (!fSetRatherThanClearFF)
3256	VM_FF_CLEAR(pVM, VM_FF_CHECK_VM_STATE);
3257	else if (pVM->cCpus > 0)
3258	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
3259
3260	vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld);
3261	}
3262
3263
3264	/**
3265	* Sets the current VM state.
3266	*
3267	* @param pVM The cross context VM structure.
3268	* @param enmStateNew The new state.
3269	* @param enmStateOld The old state (for asserting only).
3270	*/
3271	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3272	{
3273	PUVM pUVM = pVM->pUVM;
3274	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3275
3276	RT_NOREF_PV(enmStateOld);
3277	AssertMsg(pVM->enmVMState == enmStateOld,
3278	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3279	vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState, false /fSetRatherThanClearFF/);
3280
3281	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3282	}
3283
3284
3285	/**
3286	* Tries to perform a state transition.
3287	*
3288	* @returns The 1-based ordinal of the succeeding transition.
3289	* VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure.
3290	*
3291	* @param pVM The cross context VM structure.
3292	* @param pszWho Who is trying to change it.
3293	* @param cTransitions The number of transitions in the ellipsis.
3294	* @param ... Transition pairs; new, old.
3295	*/
3296	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...)
3297	{
3298	va_list va;
3299	VMSTATE enmStateNew = VMSTATE_CREATED;
3300	VMSTATE enmStateOld = VMSTATE_CREATED;
3301
3302	#ifdef VBOX_STRICT
3303	/*
3304	* Validate the input first.
3305	*/
3306	va_start(va, cTransitions);
3307	for (unsigned i = 0; i < cTransitions; i++)
3308	{
3309	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3310	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3311	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3312	}
3313	va_end(va);
3314	#endif
3315
3316	/*
3317	* Grab the lock and see if any of the proposed transitions works out.
3318	*/
3319	va_start(va, cTransitions);
3320	int rc = VERR_VM_INVALID_VM_STATE;
3321	PUVM pUVM = pVM->pUVM;
3322	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3323
3324	VMSTATE enmStateCur = pVM->enmVMState;
3325
3326	for (unsigned i = 0; i < cTransitions; i++)
3327	{
3328	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3329	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3330	if (enmStateCur == enmStateOld)
3331	{
3332	vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld, false /fSetRatherThanClearFF/);
3333	rc = i + 1;
3334	break;
3335	}
3336	}
3337
3338	if (RT_FAILURE(rc))
3339	{
3340	/*
3341	* Complain about it.
3342	*/
3343	const char * const pszStateCur = VMR3GetStateName(enmStateCur);
3344	if (cTransitions == 1)
3345	{
3346	LogRel(("%s: %s -> %s failed, because the VM state is actually %s!\n",
3347	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), pszStateCur));
3348	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS, N_("%s failed because the VM state is %s instead of %s"),
3349	pszWho, pszStateCur, VMR3GetStateName(enmStateOld));
3350	AssertMsgFailed(("%s: %s -> %s failed, because the VM state is actually %s\n",
3351	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), pszStateCur));
3352	}
3353	else
3354	{
3355	char szTransitions[4096];
3356	size_t cchTransitions = 0;
3357	szTransitions[0] = '\0';
3358	va_end(va);
3359	va_start(va, cTransitions);
3360	for (unsigned i = 0; i < cTransitions; i++)
3361	{
3362	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3363	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3364	const char * const pszStateNew = VMR3GetStateName(enmStateNew);
3365	const char * const pszStateOld = VMR3GetStateName(enmStateOld);
3366	LogRel(("%s%s -> %s", i ? ", " : " ", pszStateOld, pszStateNew));
3367	cchTransitions += RTStrPrintf(&szTransitions[cchTransitions], sizeof(szTransitions) - cchTransitions,
3368	"%s%s -> %s", i ? ", " : " ", pszStateOld, pszStateNew);
3369	}
3370	Assert(cchTransitions < sizeof(szTransitions) - 64);
3371
3372	LogRel(("%s: %s failed, because the VM state is actually %s!\n", pszWho, szTransitions, pszStateCur));
3373	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3374	N_("%s failed because the current VM state, %s, was not found in the state transition table (%s)"),
3375	pszWho, pszStateCur, szTransitions);
3376	AssertMsgFailed(("%s - state=%s, transitions: %s. Check the cTransitions passed us.\n",
3377	pszWho, pszStateCur, szTransitions));
3378	}
3379	}
3380
3381	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3382	va_end(va);
3383	Assert(rc > 0 \|\| rc < 0);
3384	return rc;
3385	}
3386
3387
3388	/**
3389	* Interface used by EM to signal that it's entering the guru meditation state.
3390	*
3391	* This will notifying other threads.
3392	*
3393	* @returns true if the state changed to Guru, false if no state change.
3394	* @param pVM The cross context VM structure.
3395	*/
3396	VMMR3_INT_DECL(bool) VMR3SetGuruMeditation(PVM pVM)
3397	{
3398	PUVM pUVM = pVM->pUVM;
3399	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3400
3401	VMSTATE enmStateCur = pVM->enmVMState;
3402	bool fRc = true;
3403	if (enmStateCur == VMSTATE_RUNNING)
3404	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING, true /fSetRatherThanClearFF/);
3405	else if (enmStateCur == VMSTATE_RUNNING_LS)
3406	{
3407	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS, true /fSetRatherThanClearFF/);
3408	SSMR3Cancel(pUVM);
3409	}
3410	else
3411	fRc = false;
3412
3413	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3414	return fRc;
3415	}
3416
3417
3418	/**
3419	* Called by vmR3EmulationThreadWithId just before the VM structure is freed.
3420	*
3421	* @param pVM The cross context VM structure.
3422	*/
3423	void vmR3SetTerminated(PVM pVM)
3424	{
3425	vmR3SetState(pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING);
3426	}
3427
3428
3429	/**
3430	* Checks if the VM was teleported and hasn't been fully resumed yet.
3431	*
3432	* This applies to both sides of the teleportation since we may leave a working
3433	* clone behind and the user is allowed to resume this...
3434	*
3435	* @returns true / false.
3436	* @param pVM The cross context VM structure.
3437	* @thread Any thread.
3438	*/
3439	VMMR3_INT_DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM)
3440	{
3441	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
3442	return pVM->vm.s.fTeleportedAndNotFullyResumedYet;
3443	}
3444
3445
3446	/**
3447	* Registers a VM state change callback.
3448	*
3449	* You are not allowed to call any function which changes the VM state from a
3450	* state callback.
3451	*
3452	* @returns VBox status code.
3453	* @param pUVM The VM handle.
3454	* @param pfnAtState Pointer to callback.
3455	* @param pvUser User argument.
3456	* @thread Any.
3457	*/
3458	VMMR3DECL(int) VMR3AtStateRegister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3459	{
3460	LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3461
3462	/*
3463	* Validate input.
3464	*/
3465	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3466	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3467
3468	/*
3469	* Allocate a new record.
3470	*/
3471	PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3472	if (!pNew)
3473	return VERR_NO_MEMORY;
3474
3475	/* fill */
3476	pNew->pfnAtState = pfnAtState;
3477	pNew->pvUser = pvUser;
3478
3479	/* insert */
3480	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3481	pNew->pNext = *pUVM->vm.s.ppAtStateNext;
3482	*pUVM->vm.s.ppAtStateNext = pNew;
3483	pUVM->vm.s.ppAtStateNext = &pNew->pNext;
3484	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3485
3486	return VINF_SUCCESS;
3487	}
3488
3489
3490	/**
3491	* Deregisters a VM state change callback.
3492	*
3493	* @returns VBox status code.
3494	* @param pUVM The VM handle.
3495	* @param pfnAtState Pointer to callback.
3496	* @param pvUser User argument.
3497	* @thread Any.
3498	*/
3499	VMMR3DECL(int) VMR3AtStateDeregister(PUVM pUVM, PFNVMATSTATE pfnAtState, void *pvUser)
3500	{
3501	LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3502
3503	/*
3504	* Validate input.
3505	*/
3506	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3507	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3508
3509	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3510
3511	/*
3512	* Search the list for the entry.
3513	*/
3514	PVMATSTATE pPrev = NULL;
3515	PVMATSTATE pCur = pUVM->vm.s.pAtState;
3516	while ( pCur
3517	&& ( pCur->pfnAtState != pfnAtState
3518	\|\| pCur->pvUser != pvUser))
3519	{
3520	pPrev = pCur;
3521	pCur = pCur->pNext;
3522	}
3523	if (!pCur)
3524	{
3525	AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState));
3526	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3527	return VERR_FILE_NOT_FOUND;
3528	}
3529
3530	/*
3531	* Unlink it.
3532	*/
3533	if (pPrev)
3534	{
3535	pPrev->pNext = pCur->pNext;
3536	if (!pCur->pNext)
3537	pUVM->vm.s.ppAtStateNext = &pPrev->pNext;
3538	}
3539	else
3540	{
3541	pUVM->vm.s.pAtState = pCur->pNext;
3542	if (!pCur->pNext)
3543	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
3544	}
3545
3546	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3547
3548	/*
3549	* Free it.
3550	*/
3551	pCur->pfnAtState = NULL;
3552	pCur->pNext = NULL;
3553	MMR3HeapFree(pCur);
3554
3555	return VINF_SUCCESS;
3556	}
3557
3558
3559	/**
3560	* Registers a VM error callback.
3561	*
3562	* @returns VBox status code.
3563	* @param pUVM The VM handle.
3564	* @param pfnAtError Pointer to callback.
3565	* @param pvUser User argument.
3566	* @thread Any.
3567	*/
3568	VMMR3DECL(int) VMR3AtErrorRegister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3569	{
3570	LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3571
3572	/*
3573	* Validate input.
3574	*/
3575	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3576	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3577
3578	/*
3579	* Allocate a new record.
3580	*/
3581	PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3582	if (!pNew)
3583	return VERR_NO_MEMORY;
3584
3585	/* fill */
3586	pNew->pfnAtError = pfnAtError;
3587	pNew->pvUser = pvUser;
3588
3589	/* insert */
3590	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3591	pNew->pNext = *pUVM->vm.s.ppAtErrorNext;
3592	*pUVM->vm.s.ppAtErrorNext = pNew;
3593	pUVM->vm.s.ppAtErrorNext = &pNew->pNext;
3594	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3595
3596	return VINF_SUCCESS;
3597	}
3598
3599
3600	/**
3601	* Deregisters a VM error callback.
3602	*
3603	* @returns VBox status code.
3604	* @param pUVM The VM handle.
3605	* @param pfnAtError Pointer to callback.
3606	* @param pvUser User argument.
3607	* @thread Any.
3608	*/
3609	VMMR3DECL(int) VMR3AtErrorDeregister(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3610	{
3611	LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3612
3613	/*
3614	* Validate input.
3615	*/
3616	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3617	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3618
3619	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3620
3621	/*
3622	* Search the list for the entry.
3623	*/
3624	PVMATERROR pPrev = NULL;
3625	PVMATERROR pCur = pUVM->vm.s.pAtError;
3626	while ( pCur
3627	&& ( pCur->pfnAtError != pfnAtError
3628	\|\| pCur->pvUser != pvUser))
3629	{
3630	pPrev = pCur;
3631	pCur = pCur->pNext;
3632	}
3633	if (!pCur)
3634	{
3635	AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError));
3636	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3637	return VERR_FILE_NOT_FOUND;
3638	}
3639
3640	/*
3641	* Unlink it.
3642	*/
3643	if (pPrev)
3644	{
3645	pPrev->pNext = pCur->pNext;
3646	if (!pCur->pNext)
3647	pUVM->vm.s.ppAtErrorNext = &pPrev->pNext;
3648	}
3649	else
3650	{
3651	pUVM->vm.s.pAtError = pCur->pNext;
3652	if (!pCur->pNext)
3653	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
3654	}
3655
3656	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3657
3658	/*
3659	* Free it.
3660	*/
3661	pCur->pfnAtError = NULL;
3662	pCur->pNext = NULL;
3663	MMR3HeapFree(pCur);
3664
3665	return VINF_SUCCESS;
3666	}
3667
3668
3669	/**
3670	* Ellipsis to va_list wrapper for calling pfnAtError.
3671	*/
3672	static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3673	{
3674	va_list va;
3675	va_start(va, pszFormat);
3676	pCur->pfnAtError(pVM->pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va);
3677	va_end(va);
3678	}
3679
3680
3681	/**
3682	* This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV.
3683	* The message is found in VMINT.
3684	*
3685	* @param pVM The cross context VM structure.
3686	* @thread EMT.
3687	*/
3688	VMMR3_INT_DECL(void) VMR3SetErrorWorker(PVM pVM)
3689	{
3690	VM_ASSERT_EMT(pVM);
3691	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Congrats!\n"));
3692
3693	/*
3694	* Unpack the error (if we managed to format one).
3695	*/
3696	PVMERROR pErr = pVM->vm.s.pErrorR3;
3697	const char *pszFile = NULL;
3698	const char *pszFunction = NULL;
3699	uint32_t iLine = 0;
3700	const char *pszMessage;
3701	int32_t rc = VERR_MM_HYPER_NO_MEMORY;
3702	if (pErr)
3703	{
3704	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3705	if (pErr->offFile)
3706	pszFile = (const char *)pErr + pErr->offFile;
3707	iLine = pErr->iLine;
3708	if (pErr->offFunction)
3709	pszFunction = (const char *)pErr + pErr->offFunction;
3710	if (pErr->offMessage)
3711	pszMessage = (const char *)pErr + pErr->offMessage;
3712	else
3713	pszMessage = "No message!";
3714	}
3715	else
3716	pszMessage = "No message! (Failed to allocate memory to put the error message in!)";
3717
3718	/*
3719	* Call the at error callbacks.
3720	*/
3721	PUVM pUVM = pVM->pUVM;
3722	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3723	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3724	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3725	vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage);
3726	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3727	}
3728
3729
3730	/**
3731	* Gets the number of errors raised via VMSetError.
3732	*
3733	* This can be used avoid double error messages.
3734	*
3735	* @returns The error count.
3736	* @param pUVM The VM handle.
3737	*/
3738	VMMR3_INT_DECL(uint32_t) VMR3GetErrorCount(PUVM pUVM)
3739	{
3740	AssertPtrReturn(pUVM, 0);
3741	AssertReturn(pUVM->u32Magic == UVM_MAGIC, 0);
3742	return pUVM->vm.s.cErrors;
3743	}
3744
3745
3746	/**
3747	* Creation time wrapper for vmR3SetErrorUV.
3748	*
3749	* @returns rc.
3750	* @param pUVM Pointer to the user mode VM structure.
3751	* @param rc The VBox status code.
3752	* @param SRC_POS The source position of this error.
3753	* @param pszFormat Format string.
3754	* @param ... The arguments.
3755	* @thread Any thread.
3756	*/
3757	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3758	{
3759	va_list va;
3760	va_start(va, pszFormat);
3761	vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va);
3762	va_end(va);
3763	return rc;
3764	}
3765
3766
3767	/**
3768	* Worker which calls everyone listening to the VM error messages.
3769	*
3770	* @param pUVM Pointer to the user mode VM structure.
3771	* @param rc The VBox status code.
3772	* @param SRC_POS The source position of this error.
3773	* @param pszFormat Format string.
3774	* @param pArgs Pointer to the format arguments.
3775	* @thread EMT
3776	*/
3777	DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char pszFormat, va_list pArgs)
3778	{
3779	/*
3780	* Log the error.
3781	*/
3782	va_list va3;
3783	va_copy(va3, *pArgs);
3784	RTLogRelPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3785	"VMSetError: %N\n",
3786	pszFile, iLine, pszFunction, rc,
3787	pszFormat, &va3);
3788	va_end(va3);
3789
3790	#ifdef LOG_ENABLED
3791	va_copy(va3, *pArgs);
3792	RTLogPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3793	"%N\n",
3794	pszFile, iLine, pszFunction, rc,
3795	pszFormat, &va3);
3796	va_end(va3);
3797	#endif
3798
3799	/*
3800	* Make a copy of the message.
3801	*/
3802	if (pUVM->pVM)
3803	vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs);
3804
3805	/*
3806	* Call the at error callbacks.
3807	*/
3808	bool fCalledSomeone = false;
3809	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3810	ASMAtomicIncU32(&pUVM->vm.s.cErrors);
3811	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3812	{
3813	va_list va2;
3814	va_copy(va2, *pArgs);
3815	pCur->pfnAtError(pUVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2);
3816	va_end(va2);
3817	fCalledSomeone = true;
3818	}
3819	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3820	}
3821
3822
3823	/**
3824	* Sets the error message.
3825	*
3826	* @returns rc. Meaning you can do:
3827	* @code
3828	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
3829	* @endcode
3830	* @param pUVM The user mode VM handle.
3831	* @param rc VBox status code.
3832	* @param SRC_POS Use RT_SRC_POS.
3833	* @param pszFormat Error message format string.
3834	* @param ... Error message arguments.
3835	* @thread Any
3836	*/
3837	VMMR3DECL(int) VMR3SetError(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3838	{
3839	va_list va;
3840	va_start(va, pszFormat);
3841	int rcRet = VMR3SetErrorV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
3842	va_end(va);
3843	return rcRet;
3844	}
3845
3846
3847	/**
3848	* Sets the error message.
3849	*
3850	* @returns rc. Meaning you can do:
3851	* @code
3852	* return VM_SET_ERROR_U(pUVM, VERR_OF_YOUR_CHOICE, "descriptive message");
3853	* @endcode
3854	* @param pUVM The user mode VM handle.
3855	* @param rc VBox status code.
3856	* @param SRC_POS Use RT_SRC_POS.
3857	* @param pszFormat Error message format string.
3858	* @param va Error message arguments.
3859	* @thread Any
3860	*/
3861	VMMR3DECL(int) VMR3SetErrorV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list va)
3862	{
3863	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3864
3865	/* Take shortcut when called on EMT, skipping VM handle requirement + validation. */
3866	if (VMR3GetVMCPUThread(pUVM) != NIL_RTTHREAD)
3867	{
3868	va_list vaCopy;
3869	va_copy(vaCopy, va);
3870	vmR3SetErrorUV(pUVM, rc, RT_SRC_POS_ARGS, pszFormat, &vaCopy);
3871	va_end(vaCopy);
3872	return rc;
3873	}
3874
3875	VM_ASSERT_VALID_EXT_RETURN(pUVM->pVM, VERR_INVALID_VM_HANDLE);
3876	return VMSetErrorV(pUVM->pVM, rc, pszFile, iLine, pszFunction, pszFormat, va);
3877	}
3878
3879
3880
3881	/**
3882	* Registers a VM runtime error callback.
3883	*
3884	* @returns VBox status code.
3885	* @param pUVM The user mode VM structure.
3886	* @param pfnAtRuntimeError Pointer to callback.
3887	* @param pvUser User argument.
3888	* @thread Any.
3889	*/
3890	VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3891	{
3892	LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3893
3894	/*
3895	* Validate input.
3896	*/
3897	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3898	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3899
3900	/*
3901	* Allocate a new record.
3902	*/
3903	PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3904	if (!pNew)
3905	return VERR_NO_MEMORY;
3906
3907	/* fill */
3908	pNew->pfnAtRuntimeError = pfnAtRuntimeError;
3909	pNew->pvUser = pvUser;
3910
3911	/* insert */
3912	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3913	pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext;
3914	*pUVM->vm.s.ppAtRuntimeErrorNext = pNew;
3915	pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext;
3916	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3917
3918	return VINF_SUCCESS;
3919	}
3920
3921
3922	/**
3923	* Deregisters a VM runtime error callback.
3924	*
3925	* @returns VBox status code.
3926	* @param pUVM The user mode VM handle.
3927	* @param pfnAtRuntimeError Pointer to callback.
3928	* @param pvUser User argument.
3929	* @thread Any.
3930	*/
3931	VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PUVM pUVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3932	{
3933	LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3934
3935	/*
3936	* Validate input.
3937	*/
3938	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3939	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3940
3941	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3942
3943	/*
3944	* Search the list for the entry.
3945	*/
3946	PVMATRUNTIMEERROR pPrev = NULL;
3947	PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError;
3948	while ( pCur
3949	&& ( pCur->pfnAtRuntimeError != pfnAtRuntimeError
3950	\|\| pCur->pvUser != pvUser))
3951	{
3952	pPrev = pCur;
3953	pCur = pCur->pNext;
3954	}
3955	if (!pCur)
3956	{
3957	AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError));
3958	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3959	return VERR_FILE_NOT_FOUND;
3960	}
3961
3962	/*
3963	* Unlink it.
3964	*/
3965	if (pPrev)
3966	{
3967	pPrev->pNext = pCur->pNext;
3968	if (!pCur->pNext)
3969	pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext;
3970	}
3971	else
3972	{
3973	pUVM->vm.s.pAtRuntimeError = pCur->pNext;
3974	if (!pCur->pNext)
3975	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
3976	}
3977
3978	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3979
3980	/*
3981	* Free it.
3982	*/
3983	pCur->pfnAtRuntimeError = NULL;
3984	pCur->pNext = NULL;
3985	MMR3HeapFree(pCur);
3986
3987	return VINF_SUCCESS;
3988	}
3989
3990
3991	/**
3992	* EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change
3993	* the state to FatalError(LS).
3994	*
3995	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
3996	* return code, see FNVMMEMTRENDEZVOUS.)
3997	*
3998	* @param pVM The cross context VM structure.
3999	* @param pVCpu The cross context virtual CPU structure of the calling EMT.
4000	* @param pvUser Ignored.
4001	*/
4002	static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser)
4003	{
4004	NOREF(pVCpu);
4005	Assert(!pvUser); NOREF(pvUser);
4006
4007	/*
4008	* The first EMT thru here changes the state.
4009	*/
4010	if (pVCpu->idCpu == pVM->cCpus - 1)
4011	{
4012	int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2,
4013	VMSTATE_FATAL_ERROR, VMSTATE_RUNNING,
4014	VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS);
4015	if (RT_FAILURE(rc))
4016	return rc;
4017	if (rc == 2)
4018	SSMR3Cancel(pVM->pUVM);
4019
4020	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
4021	}
4022
4023	/* This'll make sure we get out of whereever we are (e.g. REM). */
4024	return VINF_EM_SUSPEND;
4025	}
4026
4027
4028	/**
4029	* Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV.
4030	*
4031	* This does the common parts after the error has been saved / retrieved.
4032	*
4033	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4034	*
4035	* @param pVM The cross context VM structure.
4036	* @param fFlags The error flags.
4037	* @param pszErrorId Error ID string.
4038	* @param pszFormat Format string.
4039	* @param pVa Pointer to the format arguments.
4040	*/
4041	static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4042	{
4043	LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags));
4044	PUVM pUVM = pVM->pUVM;
4045
4046	/*
4047	* Take actions before the call.
4048	*/
4049	int rc;
4050	if (fFlags & VMSETRTERR_FLAGS_FATAL)
4051	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
4052	vmR3SetRuntimeErrorChangeState, NULL);
4053	else if (fFlags & VMSETRTERR_FLAGS_SUSPEND)
4054	{
4055	/* Make sure we don't call VMR3Suspend when we shouldn't. As seen in
4056	@bugref{10111} multiple runtime error may be flagged when we run out
4057	of disk space or similar, so don't freak out VMR3Suspend by calling
4058	it in an invalid VM state. */
4059	VMSTATE enmStateCur = pVM->enmVMState;
4060	if (enmStateCur == VMSTATE_RUNNING \|\| enmStateCur == VMSTATE_RUNNING_LS)
4061	rc = VMR3Suspend(pUVM, VMSUSPENDREASON_RUNTIME_ERROR);
4062	else
4063	rc = VINF_SUCCESS;
4064	}
4065	else
4066	rc = VINF_SUCCESS;
4067
4068	/*
4069	* Do the callback round.
4070	*/
4071	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
4072	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
4073	for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext)
4074	{
4075	va_list va;
4076	va_copy(va, *pVa);
4077	pCur->pfnAtRuntimeError(pUVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va);
4078	va_end(va);
4079	}
4080	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
4081
4082	return rc;
4083	}
4084
4085
4086	/**
4087	* Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon.
4088	*/
4089	static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
4090	{
4091	va_list va;
4092	va_start(va, pszFormat);
4093	int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va);
4094	va_end(va);
4095	return rc;
4096	}
4097
4098
4099	/**
4100	* This is a worker function for RC and Ring-0 calls to VMSetError and
4101	* VMSetErrorV.
4102	*
4103	* The message is found in VMINT.
4104	*
4105	* @returns VBox status code, see VMSetRuntimeError.
4106	* @param pVM The cross context VM structure.
4107	* @thread EMT.
4108	*/
4109	VMMR3_INT_DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM)
4110	{
4111	VM_ASSERT_EMT(pVM);
4112	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n"));
4113
4114	/*
4115	* Unpack the error (if we managed to format one).
4116	*/
4117	const char *pszErrorId = "SetRuntimeError";
4118	const char *pszMessage = "No message!";
4119	uint32_t fFlags = VMSETRTERR_FLAGS_FATAL;
4120	PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3;
4121	if (pErr)
4122	{
4123	AssertCompile(sizeof(const char) == sizeof(uint8_t));
4124	if (pErr->offErrorId)
4125	pszErrorId = (const char *)pErr + pErr->offErrorId;
4126	if (pErr->offMessage)
4127	pszMessage = (const char *)pErr + pErr->offMessage;
4128	fFlags = pErr->fFlags;
4129	}
4130
4131	/*
4132	* Join cause with vmR3SetRuntimeErrorV.
4133	*/
4134	return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4135	}
4136
4137
4138	/**
4139	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4140	*
4141	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4142	*
4143	* @param pVM The cross context VM structure.
4144	* @param fFlags The error flags.
4145	* @param pszErrorId Error ID string.
4146	* @param pszMessage The error message residing the MM heap.
4147	*
4148	* @thread EMT
4149	*/
4150	DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char pszErrorId, char pszMessage)
4151	{
4152	#if 0 /** @todo make copy of the error msg. */
4153	/*
4154	* Make a copy of the message.
4155	*/
4156	va_list va2;
4157	va_copy(va2, *pVa);
4158	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4159	va_end(va2);
4160	#endif
4161
4162	/*
4163	* Join paths with VMR3SetRuntimeErrorWorker.
4164	*/
4165	int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
4166	MMR3HeapFree(pszMessage);
4167	return rc;
4168	}
4169
4170
4171	/**
4172	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
4173	*
4174	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
4175	*
4176	* @param pVM The cross context VM structure.
4177	* @param fFlags The error flags.
4178	* @param pszErrorId Error ID string.
4179	* @param pszFormat Format string.
4180	* @param pVa Pointer to the format arguments.
4181	*
4182	* @thread EMT
4183	*/
4184	DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
4185	{
4186	/*
4187	* Make a copy of the message.
4188	*/
4189	va_list va2;
4190	va_copy(va2, *pVa);
4191	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
4192	va_end(va2);
4193
4194	/*
4195	* Join paths with VMR3SetRuntimeErrorWorker.
4196	*/
4197	return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa);
4198	}
4199
4200
4201	/**
4202	* Gets the number of runtime errors raised via VMR3SetRuntimeError.
4203	*
4204	* This can be used avoid double error messages.
4205	*
4206	* @returns The runtime error count.
4207	* @param pUVM The user mode VM handle.
4208	*/
4209	VMMR3_INT_DECL(uint32_t) VMR3GetRuntimeErrorCount(PUVM pUVM)
4210	{
4211	return pUVM->vm.s.cRuntimeErrors;
4212	}
4213
4214
4215	/**
4216	* Gets the ID virtual of the virtual CPU associated with the calling thread.
4217	*
4218	* @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT.
4219	*
4220	* @param pVM The cross context VM structure.
4221	*/
4222	VMMR3_INT_DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM)
4223	{
4224	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4225	return pUVCpu
4226	? pUVCpu->idCpu
4227	: NIL_VMCPUID;
4228	}
4229
4230
4231	/**
4232	* Checks if the VM is long-mode (64-bit) capable or not.
4233	*
4234	* @returns true if VM can operate in long-mode, false otherwise.
4235	* @param pVM The cross context VM structure.
4236	*/
4237	VMMR3_INT_DECL(bool) VMR3IsLongModeAllowed(PVM pVM)
4238	{
4239	switch (pVM->bMainExecutionEngine)
4240	{
4241	#if !defined(VBOX_VMM_TARGET_ARMV8)
4242	case VM_EXEC_ENGINE_HW_VIRT:
4243	return HMIsLongModeAllowed(pVM);
4244	#endif
4245
4246	case VM_EXEC_ENGINE_NATIVE_API:
4247	return NEMHCIsLongModeAllowed(pVM);
4248
4249	case VM_EXEC_ENGINE_NOT_SET:
4250	AssertFailed();
4251	RT_FALL_THRU();
4252	default:
4253	return false;
4254	}
4255	}
4256
4257
4258	/**
4259	* Returns the native ID of the current EMT VMCPU thread.
4260	*
4261	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4262	* @param pVM The cross context VM structure.
4263	* @thread EMT
4264	*/
4265	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM)
4266	{
4267	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4268
4269	if (!pUVCpu)
4270	return NIL_RTNATIVETHREAD;
4271
4272	return pUVCpu->vm.s.NativeThreadEMT;
4273	}
4274
4275
4276	/**
4277	* Returns the native ID of the current EMT VMCPU thread.
4278	*
4279	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4280	* @param pUVM The user mode VM structure.
4281	* @thread EMT
4282	*/
4283	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM)
4284	{
4285	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4286
4287	if (!pUVCpu)
4288	return NIL_RTNATIVETHREAD;
4289
4290	return pUVCpu->vm.s.NativeThreadEMT;
4291	}
4292
4293
4294	/**
4295	* Returns the handle of the current EMT VMCPU thread.
4296	*
4297	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4298	* @param pUVM The user mode VM handle.
4299	* @thread EMT
4300	*/
4301	VMMR3DECL(RTTHREAD) VMR3GetVMCPUThread(PUVM pUVM)
4302	{
4303	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4304
4305	if (!pUVCpu)
4306	return NIL_RTTHREAD;
4307
4308	return pUVCpu->vm.s.ThreadEMT;
4309	}
4310
4311
4312	/**
4313	* Returns the handle of the current EMT VMCPU thread.
4314	*
4315	* @returns The IPRT thread handle.
4316	* @param pUVCpu The user mode CPU handle.
4317	* @thread EMT
4318	*/
4319	VMMR3_INT_DECL(RTTHREAD) VMR3GetThreadHandle(PUVMCPU pUVCpu)
4320	{
4321	return pUVCpu->vm.s.ThreadEMT;
4322	}
4323
4324
4325	/**
4326	* Return the package and core ID of a CPU.
4327	*
4328	* @returns VBOX status code.
4329	* @param pUVM The user mode VM handle.
4330	* @param idCpu Virtual CPU to get the ID from.
4331	* @param pidCpuCore Where to store the core ID of the virtual CPU.
4332	* @param pidCpuPackage Where to store the package ID of the virtual CPU.
4333	*
4334	*/
4335	VMMR3DECL(int) VMR3GetCpuCoreAndPackageIdFromCpuId(PUVM pUVM, VMCPUID idCpu, uint32_t pidCpuCore, uint32_t pidCpuPackage)
4336	{
4337	/*
4338	* Validate input.
4339	*/
4340	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4341	PVM pVM = pUVM->pVM;
4342	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4343	AssertPtrReturn(pidCpuCore, VERR_INVALID_POINTER);
4344	AssertPtrReturn(pidCpuPackage, VERR_INVALID_POINTER);
4345	if (idCpu >= pVM->cCpus)
4346	return VERR_INVALID_CPU_ID;
4347
4348	/*
4349	* Set return values.
4350	*/
4351	#ifdef VBOX_WITH_MULTI_CORE
4352	*pidCpuCore = idCpu;
4353	*pidCpuPackage = 0;
4354	#else
4355	*pidCpuCore = 0;
4356	*pidCpuPackage = idCpu;
4357	#endif
4358
4359	return VINF_SUCCESS;
4360	}
4361
4362
4363	/**
4364	* Worker for VMR3HotUnplugCpu.
4365	*
4366	* @returns VINF_EM_WAIT_SPIP (strict status code).
4367	* @param pVM The cross context VM structure.
4368	* @param idCpu The current CPU.
4369	*/
4370	static DECLCALLBACK(int) vmR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4371	{
4372	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
4373	VMCPU_ASSERT_EMT(pVCpu);
4374
4375	/*
4376	* Reset per CPU resources.
4377	*
4378	* Actually only needed for VT-x because the CPU seems to be still in some
4379	* paged mode and startup fails after a new hot plug event. SVM works fine
4380	* even without this.
4381	*/
4382	Log(("vmR3HotUnplugCpu for VCPU %u\n", idCpu));
4383	PGMR3ResetCpu(pVM, pVCpu);
4384	PDMR3ResetCpu(pVCpu);
4385	TRPMR3ResetCpu(pVCpu);
4386	CPUMR3ResetCpu(pVM, pVCpu);
4387	EMR3ResetCpu(pVCpu);
4388	HMR3ResetCpu(pVCpu);
4389	NEMR3ResetCpu(pVCpu, false /fInitIpi/);
4390	return VINF_EM_WAIT_SIPI;
4391	}
4392
4393
4394	/**
4395	* Hot-unplugs a CPU from the guest.
4396	*
4397	* @returns VBox status code.
4398	* @param pUVM The user mode VM handle.
4399	* @param idCpu Virtual CPU to perform the hot unplugging operation on.
4400	*/
4401	VMMR3DECL(int) VMR3HotUnplugCpu(PUVM pUVM, VMCPUID idCpu)
4402	{
4403	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4404	PVM pVM = pUVM->pVM;
4405	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4406	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4407
4408	/** @todo r=bird: Don't destroy the EMT, it'll break VMMR3EmtRendezvous and
4409	* broadcast requests. Just note down somewhere that the CPU is
4410	* offline and send it to SPIP wait. Maybe modify VMCPUSTATE and push
4411	* it out of the EM loops when offline. */
4412	return VMR3ReqCallNoWaitU(pUVM, idCpu, (PFNRT)vmR3HotUnplugCpu, 2, pVM, idCpu);
4413	}
4414
4415
4416	/**
4417	* Hot-plugs a CPU on the guest.
4418	*
4419	* @returns VBox status code.
4420	* @param pUVM The user mode VM handle.
4421	* @param idCpu Virtual CPU to perform the hot plugging operation on.
4422	*/
4423	VMMR3DECL(int) VMR3HotPlugCpu(PUVM pUVM, VMCPUID idCpu)
4424	{
4425	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4426	PVM pVM = pUVM->pVM;
4427	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4428	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4429
4430	/** @todo r-bird: Just mark it online and make sure it waits on SPIP. */
4431	return VINF_SUCCESS;
4432	}
4433
4434
4435	/**
4436	* Changes the VMM execution cap.
4437	*
4438	* @returns VBox status code.
4439	* @param pUVM The user mode VM structure.
4440	* @param uCpuExecutionCap New CPU execution cap in precent, 1-100. Where
4441	* 100 is max performance (default).
4442	*/
4443	VMMR3DECL(int) VMR3SetCpuExecutionCap(PUVM pUVM, uint32_t uCpuExecutionCap)
4444	{
4445	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4446	PVM pVM = pUVM->pVM;
4447	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4448	AssertReturn(uCpuExecutionCap > 0 && uCpuExecutionCap <= 100, VERR_INVALID_PARAMETER);
4449
4450	Log(("VMR3SetCpuExecutionCap: new priority = %d\n", uCpuExecutionCap));
4451	/* Note: not called from EMT. */
4452	pVM->uCpuExecutionCap = uCpuExecutionCap;
4453	return VINF_SUCCESS;
4454	}
4455
4456
4457	/**
4458	* Control whether the VM should power off when resetting.
4459	*
4460	* @returns VBox status code.
4461	* @param pUVM The user mode VM handle.
4462	* @param fPowerOffInsteadOfReset Flag whether the VM should power off when
4463	* resetting.
4464	*/
4465	VMMR3DECL(int) VMR3SetPowerOffInsteadOfReset(PUVM pUVM, bool fPowerOffInsteadOfReset)
4466	{
4467	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
4468	PVM pVM = pUVM->pVM;
4469	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
4470
4471	/* Note: not called from EMT. */
4472	pVM->vm.s.fPowerOffInsteadOfReset = fPowerOffInsteadOfReset;
4473	return VINF_SUCCESS;
4474	}
4475

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source: vbox/trunk/src/VBox/VMM/VMMR3/VM.cpp@ 107044

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