VM.cpp@ 26616

Last change on this file since 26616 was 26365, checked in by vboxsync, 15 years ago
vmR3SetErrorUV: Log the status code too.
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1	/* $Id: VM.cpp 26365 2010-02-09 13:37:29Z vboxsync $ */
2	/** @file
3	* VM - Virtual Machine
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/** @page pg_vm VM API
23	*
24	* This is the encapsulating bit. It provides the APIs that Main and VBoxBFE
25	* use to create a VMM instance for running a guest in. It also provides
26	* facilities for queuing request for execution in EMT (serialization purposes
27	* mostly) and for reporting error back to the VMM user (Main/VBoxBFE).
28	*
29	*
30	* @section sec_vm_design Design Critique / Things To Do
31	*
32	* In hindsight this component is a big design mistake, all this stuff really
33	* belongs in the VMM component. It just seemed like a kind of ok idea at a
34	* time when the VMM bit was a kind of vague. 'VM' also happend to be the name
35	* of the per-VM instance structure (see vm.h), so it kind of made sense.
36	* However as it turned out, VMM(.cpp) is almost empty all it provides in ring-3
37	* is some minor functionally and some "routing" services.
38	*
39	* Fixing this is just a matter of some more or less straight forward
40	* refactoring, the question is just when someone will get to it. Moving the EMT
41	* would be a good start.
42	*
43	*/
44
45	/*******************************************************************************
46	* Header Files *
47	*******************************************************************************/
48	#define LOG_GROUP LOG_GROUP_VM
49	#include <VBox/cfgm.h>
50	#include <VBox/vmm.h>
51	#include <VBox/gvmm.h>
52	#include <VBox/mm.h>
53	#include <VBox/cpum.h>
54	#include <VBox/selm.h>
55	#include <VBox/trpm.h>
56	#include <VBox/dbgf.h>
57	#include <VBox/pgm.h>
58	#include <VBox/pdmapi.h>
59	#include <VBox/pdmcritsect.h>
60	#include <VBox/em.h>
61	#include <VBox/rem.h>
62	#include <VBox/tm.h>
63	#include <VBox/stam.h>
64	#include <VBox/patm.h>
65	#ifdef VBOX_WITH_VMI
66	# include <VBox/parav.h>
67	#endif
68	#include <VBox/csam.h>
69	#include <VBox/iom.h>
70	#include <VBox/ssm.h>
71	#include <VBox/hwaccm.h>
72	#include "VMInternal.h"
73	#include <VBox/vm.h>
74	#include <VBox/uvm.h>
75
76	#include <VBox/sup.h>
77	#include <VBox/dbg.h>
78	#include <VBox/err.h>
79	#include <VBox/param.h>
80	#include <VBox/log.h>
81	#include <iprt/assert.h>
82	#include <iprt/alloc.h>
83	#include <iprt/asm.h>
84	#include <iprt/env.h>
85	#include <iprt/string.h>
86	#include <iprt/time.h>
87	#include <iprt/semaphore.h>
88	#include <iprt/thread.h>
89
90
91	/*******************************************************************************
92	* Structures and Typedefs *
93	*******************************************************************************/
94	/**
95	* VM destruction callback registration record.
96	*/
97	typedef struct VMATDTOR
98	{
99	/** Pointer to the next record in the list. */
100	struct VMATDTOR *pNext;
101	/** Pointer to the callback function. */
102	PFNVMATDTOR pfnAtDtor;
103	/** The user argument. */
104	void *pvUser;
105	} VMATDTOR;
106	/** Pointer to a VM destruction callback registration record. */
107	typedef VMATDTOR *PVMATDTOR;
108
109
110	/*******************************************************************************
111	* Global Variables *
112	*******************************************************************************/
113	/** Pointer to the list of VMs. */
114	static PUVM g_pUVMsHead = NULL;
115
116	/** Pointer to the list of at VM destruction callbacks. */
117	static PVMATDTOR g_pVMAtDtorHead = NULL;
118	/** Lock the g_pVMAtDtorHead list. */
119	#define VM_ATDTOR_LOCK() do { } while (0)
120	/** Unlock the g_pVMAtDtorHead list. */
121	#define VM_ATDTOR_UNLOCK() do { } while (0)
122
123
124	/*******************************************************************************
125	* Internal Functions *
126	*******************************************************************************/
127	static int vmR3CreateUVM(uint32_t cCpus, PUVM *ppUVM);
128	static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM);
129	static int vmR3InitRing3(PVM pVM, PUVM pUVM);
130	static int vmR3InitVMCpu(PVM pVM);
131	static int vmR3InitRing0(PVM pVM);
132	static int vmR3InitGC(PVM pVM);
133	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat);
134	static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser);
135	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait);
136	static void vmR3AtDtor(PVM pVM);
137	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew);
138	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
139	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...);
140	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
141	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
142	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...);
143
144
145	/**
146	* Do global VMM init.
147	*
148	* @returns VBox status code.
149	*/
150	VMMR3DECL(int) VMR3GlobalInit(void)
151	{
152	/*
153	* Only once.
154	*/
155	static bool volatile s_fDone = false;
156	if (s_fDone)
157	return VINF_SUCCESS;
158
159	/*
160	* We're done.
161	*/
162	s_fDone = true;
163	return VINF_SUCCESS;
164	}
165
166
167
168	/**
169	* Creates a virtual machine by calling the supplied configuration constructor.
170	*
171	* On successful returned the VM is powered, i.e. VMR3PowerOn() should be
172	* called to start the execution.
173	*
174	* @returns 0 on success.
175	* @returns VBox error code on failure.
176	* @param cCpus Number of virtual CPUs for the new VM.
177	* @param pfnVMAtError Pointer to callback function for setting VM
178	* errors. This was added as an implicit call to
179	* VMR3AtErrorRegister() since there is no way the
180	* caller can get to the VM handle early enough to
181	* do this on its own.
182	* This is called in the context of an EMT.
183	* @param pvUserVM The user argument passed to pfnVMAtError.
184	* @param pfnCFGMConstructor Pointer to callback function for constructing the VM configuration tree.
185	* This is called in the context of an EMT0.
186	* @param pvUserCFGM The user argument passed to pfnCFGMConstructor.
187	* @param ppVM Where to store the 'handle' of the created VM.
188	*/
189	VMMR3DECL(int) VMR3Create(uint32_t cCpus, PFNVMATERROR pfnVMAtError, void pvUserVM, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void pvUserCFGM, PVM *ppVM)
190	{
191	LogFlow(("VMR3Create: cCpus=%RU32 pfnVMAtError=%p pvUserVM=%p pfnCFGMConstructor=%p pvUserCFGM=%p ppVM=%p\n",
192	cCpus, pfnVMAtError, pvUserVM, pfnCFGMConstructor, pvUserCFGM, ppVM));
193
194	/*
195	* Because of the current hackiness of the applications
196	* we'll have to initialize global stuff from here.
197	* Later the applications will take care of this in a proper way.
198	*/
199	static bool fGlobalInitDone = false;
200	if (!fGlobalInitDone)
201	{
202	int rc = VMR3GlobalInit();
203	if (RT_FAILURE(rc))
204	return rc;
205	fGlobalInitDone = true;
206	}
207
208	/*
209	* Validate input.
210	*/
211	AssertLogRelMsgReturn(cCpus > 0 && cCpus <= VMM_MAX_CPU_COUNT, ("%RU32\n", cCpus), VERR_TOO_MANY_CPUS);
212
213	/*
214	* Create the UVM so we can register the at-error callback
215	* and consoliate a bit of cleanup code.
216	*/
217	PUVM pUVM = NULL; /* shuts up gcc */
218	int rc = vmR3CreateUVM(cCpus, &pUVM);
219	if (RT_FAILURE(rc))
220	return rc;
221	if (pfnVMAtError)
222	rc = VMR3AtErrorRegisterU(pUVM, pfnVMAtError, pvUserVM);
223	if (RT_SUCCESS(rc))
224	{
225	/*
226	* Initialize the support library creating the session for this VM.
227	*/
228	rc = SUPR3Init(&pUVM->vm.s.pSession);
229	if (RT_SUCCESS(rc))
230	{
231	/*
232	* Call vmR3CreateU in the EMT thread and wait for it to finish.
233	*
234	* Note! VMCPUID_ANY is used here because VMR3ReqQueueU would have trouble
235	* submitting a request to a specific VCPU without a pVM. So, to make
236	* sure init is running on EMT(0), vmR3EmulationThreadWithId makes sure
237	* that only EMT(0) is servicing VMCPUID_ANY requests when pVM is NULL.
238	*/
239	PVMREQ pReq;
240	rc = VMR3ReqCallU(pUVM, VMCPUID_ANY, &pReq, RT_INDEFINITE_WAIT, VMREQFLAGS_VBOX_STATUS,
241	(PFNRT)vmR3CreateU, 4, pUVM, cCpus, pfnCFGMConstructor, pvUserCFGM);
242	if (RT_SUCCESS(rc))
243	{
244	rc = pReq->iStatus;
245	VMR3ReqFree(pReq);
246	if (RT_SUCCESS(rc))
247	{
248	/*
249	* Success!
250	*/
251	*ppVM = pUVM->pVM;
252	LogFlow(("VMR3Create: returns VINF_SUCCESS ppVM=%p\n", ppVM));
253	return VINF_SUCCESS;
254	}
255	}
256	else
257	AssertMsgFailed(("VMR3ReqCallU failed rc=%Rrc\n", rc));
258
259	/*
260	* An error occurred during VM creation. Set the error message directly
261	* using the initial callback, as the callback list doesn't exist yet.
262	*/
263	const char *pszError = NULL;
264	switch (rc)
265	{
266	case VERR_VMX_IN_VMX_ROOT_MODE:
267	#ifdef RT_OS_LINUX
268	pszError = N_("VirtualBox can't operate in VMX root mode. "
269	"Please disable the KVM kernel extension, recompile your kernel and reboot");
270	#else
271	pszError = N_("VirtualBox can't operate in VMX root mode. Please close all other virtualization programs.");
272	#endif
273	break;
274
275	case VERR_SVM_IN_USE:
276	#ifdef RT_OS_LINUX
277	pszError = N_("VirtualBox can't enable the AMD-V extension. "
278	"Please disable the KVM kernel extension, recompile your kernel and reboot");
279	#else
280	pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs.");
281	#endif
282	break;
283
284	case VERR_VERSION_MISMATCH:
285	pszError = N_("VMMR0 driver version mismatch. Please terminate all VMs, make sure that "
286	"VBoxNetDHCP is not running and try again. If you still get this error, "
287	"re-install VirtualBox");
288	break;
289
290	#ifdef RT_OS_LINUX
291	case VERR_SUPDRV_COMPONENT_NOT_FOUND:
292	pszError = N_("One of the kernel modules was not successfully loaded. Make sure "
293	"that no kernel modules from an older version of VirtualBox exist. "
294	"Then try to recompile and reload the kernel modules by executing "
295	"'/etc/init.d/vboxdrv setup' as root");
296	break;
297	#endif
298
299	case VERR_RAW_MODE_INVALID_SMP:
300	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
301	"VirtualBox requires this hardware extension to emulate more than one "
302	"guest CPU");
303	break;
304
305	case VERR_SUPDRV_KERNEL_TOO_OLD_FOR_VTX:
306	#ifdef RT_OS_LINUX
307	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
308	"extension. Either upgrade your kernel to Linux 2.6.13 or later or disable "
309	"the VT-x extension in the VM settings. Note that without VT-x you have "
310	"to reduce the number of guest CPUs to one");
311	#else
312	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
313	"extension. Either upgrade your kernel or disable the VT-x extension in the "
314	"VM settings. Note that without VT-x you have to reduce the number of guest "
315	"CPUs to one");
316	#endif
317	break;
318
319	default:
320	pszError = N_("Unknown error creating VM");
321	break;
322	}
323	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
324	}
325	else
326	{
327	/*
328	* An error occurred at support library initialization time (before the
329	* VM could be created). Set the error message directly using the
330	* initial callback, as the callback list doesn't exist yet.
331	*/
332	const char *pszError;
333	switch (rc)
334	{
335	case VERR_VM_DRIVER_LOAD_ERROR:
336	#ifdef RT_OS_LINUX
337	pszError = N_("VirtualBox kernel driver not loaded. The vboxdrv kernel module "
338	"was either not loaded or /dev/vboxdrv is not set up properly. "
339	"Re-setup the kernel module by executing "
340	"'/etc/init.d/vboxdrv setup' as root");
341	#else
342	pszError = N_("VirtualBox kernel driver not loaded");
343	#endif
344	break;
345	case VERR_VM_DRIVER_OPEN_ERROR:
346	pszError = N_("VirtualBox kernel driver cannot be opened");
347	break;
348	case VERR_VM_DRIVER_NOT_ACCESSIBLE:
349	#ifdef VBOX_WITH_HARDENING
350	/* This should only happen if the executable wasn't hardened - bad code/build. */
351	pszError = N_("VirtualBox kernel driver not accessible, permission problem. "
352	"Re-install VirtualBox. If you are building it yourself, you "
353	"should make sure it installed correctly and that the setuid "
354	"bit is set on the executables calling VMR3Create.");
355	#else
356	/* This should only happen when mixing builds or with the usual /dev/vboxdrv access issues. */
357	# if defined(RT_OS_DARWIN)
358	pszError = N_("VirtualBox KEXT is not accessible, permission problem. "
359	"If you have built VirtualBox yourself, make sure that you do not "
360	"have the vboxdrv KEXT from a different build or installation loaded.");
361	# elif defined(RT_OS_LINUX)
362	pszError = N_("VirtualBox kernel driver is not accessible, permission problem. "
363	"If you have built VirtualBox yourself, make sure that you do "
364	"not have the vboxdrv kernel module from a different build or "
365	"installation loaded. Also, make sure the vboxdrv udev rule gives "
366	"you the permission you need to access the device.");
367	# elif defined(RT_OS_WINDOWS)
368	pszError = N_("VirtualBox kernel driver is not accessible, permission problem.");
369	# else /* solaris, freebsd, ++. */
370	pszError = N_("VirtualBox kernel module is not accessible, permission problem. "
371	"If you have built VirtualBox yourself, make sure that you do "
372	"not have the vboxdrv kernel module from a different install loaded.");
373	# endif
374	#endif
375	break;
376	case VERR_INVALID_HANDLE: /** @todo track down and fix this error. */
377	case VERR_VM_DRIVER_NOT_INSTALLED:
378	#ifdef RT_OS_LINUX
379	pszError = N_("VirtualBox kernel driver not installed. The vboxdrv kernel module "
380	"was either not loaded or /dev/vboxdrv was not created for some "
381	"reason. Re-setup the kernel module by executing "
382	"'/etc/init.d/vboxdrv setup' as root");
383	#else
384	pszError = N_("VirtualBox kernel driver not installed");
385	#endif
386	break;
387	case VERR_NO_MEMORY:
388	pszError = N_("VirtualBox support library out of memory");
389	break;
390	case VERR_VERSION_MISMATCH:
391	case VERR_VM_DRIVER_VERSION_MISMATCH:
392	pszError = N_("The VirtualBox support driver which is running is from a different "
393	"version of VirtualBox. You can correct this by stopping all "
394	"running instances of VirtualBox and reinstalling the software.");
395	break;
396	default:
397	pszError = N_("Unknown error initializing kernel driver");
398	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
399	}
400	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
401	}
402	}
403
404	/* cleanup */
405	vmR3DestroyUVM(pUVM, 2000);
406	LogFlow(("VMR3Create: returns %Rrc\n", rc));
407	return rc;
408	}
409
410
411	/**
412	* Creates the UVM.
413	*
414	* This will not initialize the support library even if vmR3DestroyUVM
415	* will terminate that.
416	*
417	* @returns VBox status code.
418	* @param cCpus Number of virtual CPUs
419	* @param ppUVM Where to store the UVM pointer.
420	*/
421	static int vmR3CreateUVM(uint32_t cCpus, PUVM *ppUVM)
422	{
423	uint32_t i;
424
425	/*
426	* Create and initialize the UVM.
427	*/
428	PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_OFFSETOF(UVM, aCpus[cCpus]));
429	AssertReturn(pUVM, VERR_NO_MEMORY);
430	pUVM->u32Magic = UVM_MAGIC;
431	pUVM->cCpus = cCpus;
432
433	AssertCompile(sizeof(pUVM->vm.s) <= sizeof(pUVM->vm.padding));
434
435	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
436	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
437	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
438
439	pUVM->vm.s.enmHaltMethod = VMHALTMETHOD_BOOTSTRAP;
440
441	/* Initialize the VMCPU array in the UVM. */
442	for (i = 0; i < cCpus; i++)
443	{
444	pUVM->aCpus[i].pUVM = pUVM;
445	pUVM->aCpus[i].idCpu = i;
446	}
447
448	/* Allocate a TLS entry to store the VMINTUSERPERVMCPU pointer. */
449	int rc = RTTlsAllocEx(&pUVM->vm.s.idxTLS, NULL);
450	AssertRC(rc);
451	if (RT_SUCCESS(rc))
452	{
453	/* Allocate a halt method event semaphore for each VCPU. */
454	for (i = 0; i < cCpus; i++)
455	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
456	for (i = 0; i < cCpus; i++)
457	{
458	rc = RTSemEventCreate(&pUVM->aCpus[i].vm.s.EventSemWait);
459	if (RT_FAILURE(rc))
460	break;
461	}
462	if (RT_SUCCESS(rc))
463	{
464	rc = RTCritSectInit(&pUVM->vm.s.AtStateCritSect);
465	if (RT_SUCCESS(rc))
466	{
467	rc = RTCritSectInit(&pUVM->vm.s.AtErrorCritSect);
468	if (RT_SUCCESS(rc))
469	{
470	/*
471	* Init fundamental (sub-)components - STAM, MMR3Heap and PDMLdr.
472	*/
473	rc = STAMR3InitUVM(pUVM);
474	if (RT_SUCCESS(rc))
475	{
476	rc = MMR3InitUVM(pUVM);
477	if (RT_SUCCESS(rc))
478	{
479	rc = PDMR3InitUVM(pUVM);
480	if (RT_SUCCESS(rc))
481	{
482	/*
483	* Start the emulation threads for all VMCPUs.
484	*/
485	for (i = 0; i < cCpus; i++)
486	{
487	rc = RTThreadCreateF(&pUVM->aCpus[i].vm.s.ThreadEMT, vmR3EmulationThread, &pUVM->aCpus[i], _1M,
488	RTTHREADTYPE_EMULATION, RTTHREADFLAGS_WAITABLE,
489	cCpus > 1 ? "EMT-%u" : "EMT", i);
490	if (RT_FAILURE(rc))
491	break;
492
493	pUVM->aCpus[i].vm.s.NativeThreadEMT = RTThreadGetNative(pUVM->aCpus[i].vm.s.ThreadEMT);
494	}
495
496	if (RT_SUCCESS(rc))
497	{
498	*ppUVM = pUVM;
499	return VINF_SUCCESS;
500	}
501
502	/* bail out. */
503	while (i-- > 0)
504	{
505	/** @todo rainy day: terminate the EMTs. */
506	}
507	PDMR3TermUVM(pUVM);
508	}
509	MMR3TermUVM(pUVM);
510	}
511	STAMR3TermUVM(pUVM);
512	}
513	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
514	}
515	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
516	}
517	}
518	for (i = 0; i < cCpus; i++)
519	{
520	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
521	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
522	}
523	RTTlsFree(pUVM->vm.s.idxTLS);
524	}
525	RTMemPageFree(pUVM);
526	return rc;
527	}
528
529
530	/**
531	* Creates and initializes the VM.
532	*
533	* @thread EMT
534	*/
535	static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM)
536	{
537	int rc = VINF_SUCCESS;
538
539	/*
540	* Load the VMMR0.r0 module so that we can call GVMMR0CreateVM.
541	*/
542	rc = PDMR3LdrLoadVMMR0U(pUVM);
543	if (RT_FAILURE(rc))
544	{
545	/** @todo we need a cleaner solution for this (VERR_VMX_IN_VMX_ROOT_MODE).
546	* bird: what about moving the message down here? Main picks the first message, right? */
547	if (rc == VERR_VMX_IN_VMX_ROOT_MODE)
548	return rc; /* proper error message set later on */
549	return vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("Failed to load VMMR0.r0"));
550	}
551
552	/*
553	* Request GVMM to create a new VM for us.
554	*/
555	GVMMCREATEVMREQ CreateVMReq;
556	CreateVMReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
557	CreateVMReq.Hdr.cbReq = sizeof(CreateVMReq);
558	CreateVMReq.pSession = pUVM->vm.s.pSession;
559	CreateVMReq.pVMR0 = NIL_RTR0PTR;
560	CreateVMReq.pVMR3 = NULL;
561	CreateVMReq.cCpus = cCpus;
562	rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_GVMM_CREATE_VM, 0, &CreateVMReq.Hdr);
563	if (RT_SUCCESS(rc))
564	{
565	PVM pVM = pUVM->pVM = CreateVMReq.pVMR3;
566	AssertRelease(VALID_PTR(pVM));
567	AssertRelease(pVM->pVMR0 == CreateVMReq.pVMR0);
568	AssertRelease(pVM->pSession == pUVM->vm.s.pSession);
569	AssertRelease(pVM->cCpus == cCpus);
570	AssertRelease(pVM->offVMCPU == RT_UOFFSETOF(VM, aCpus));
571
572	Log(("VMR3Create: Created pUVM=%p pVM=%p pVMR0=%p hSelf=%#x cCpus=%RU32\n",
573	pUVM, pVM, pVM->pVMR0, pVM->hSelf, pVM->cCpus));
574
575	/*
576	* Initialize the VM structure and our internal data (VMINT).
577	*/
578	pVM->pUVM = pUVM;
579
580	for (VMCPUID i = 0; i < pVM->cCpus; i++)
581	{
582	pVM->aCpus[i].pUVCpu = &pUVM->aCpus[i];
583	pVM->aCpus[i].idCpu = i;
584	pVM->aCpus[i].hNativeThread = pUVM->aCpus[i].vm.s.NativeThreadEMT;
585	Assert(pVM->aCpus[i].hNativeThread != NIL_RTNATIVETHREAD);
586
587	pUVM->aCpus[i].pVCpu = &pVM->aCpus[i];
588	pUVM->aCpus[i].pVM = pVM;
589	}
590
591
592	/*
593	* Init the configuration.
594	*/
595	rc = CFGMR3Init(pVM, pfnCFGMConstructor, pvUserCFGM);
596	if (RT_SUCCESS(rc))
597	{
598	rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "HwVirtExtForced", &pVM->fHwVirtExtForced, false);
599	if (RT_SUCCESS(rc) && pVM->fHwVirtExtForced)
600	pVM->fHWACCMEnabled = true;
601
602	/*
603	* If executing in fake suplib mode disable RR3 and RR0 in the config.
604	*/
605	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
606	if (psz && !strcmp(psz, "fake"))
607	{
608	CFGMR3RemoveValue(CFGMR3GetRoot(pVM), "RawR3Enabled");
609	CFGMR3InsertInteger(CFGMR3GetRoot(pVM), "RawR3Enabled", 0);
610	CFGMR3RemoveValue(CFGMR3GetRoot(pVM), "RawR0Enabled");
611	CFGMR3InsertInteger(CFGMR3GetRoot(pVM), "RawR0Enabled", 0);
612	}
613
614	/*
615	* Make sure the CPU count in the config data matches.
616	*/
617	if (RT_SUCCESS(rc))
618	{
619	uint32_t cCPUsCfg;
620	rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "NumCPUs", &cCPUsCfg, 1);
621	AssertLogRelMsgRC(rc, ("Configuration error: Querying \"NumCPUs\" as integer failed, rc=%Rrc\n", rc));
622	if (RT_SUCCESS(rc) && cCPUsCfg != cCpus)
623	{
624	AssertLogRelMsgFailed(("Configuration error: \"NumCPUs\"=%RU32 and VMR3CreateVM::cCpus=%RU32 does not match!\n",
625	cCPUsCfg, cCpus));
626	rc = VERR_INVALID_PARAMETER;
627	}
628	}
629	if (RT_SUCCESS(rc))
630	{
631	/*
632	* Init the ring-3 components and ring-3 per cpu data, finishing it off
633	* by a relocation round (intermediate context finalization will do this).
634	*/
635	rc = vmR3InitRing3(pVM, pUVM);
636	if (RT_SUCCESS(rc))
637	{
638	rc = vmR3InitVMCpu(pVM);
639	if (RT_SUCCESS(rc))
640	rc = PGMR3FinalizeMappings(pVM);
641	if (RT_SUCCESS(rc))
642	{
643
644	LogFlow(("Ring-3 init succeeded\n"));
645
646	/*
647	* Init the Ring-0 components.
648	*/
649	rc = vmR3InitRing0(pVM);
650	if (RT_SUCCESS(rc))
651	{
652	/* Relocate again, because some switcher fixups depends on R0 init results. */
653	VMR3Relocate(pVM, 0);
654
655	#ifdef VBOX_WITH_DEBUGGER
656	/*
657	* Init the tcp debugger console if we're building
658	* with debugger support.
659	*/
660	void *pvUser = NULL;
661	rc = DBGCTcpCreate(pVM, &pvUser);
662	if ( RT_SUCCESS(rc)
663	\|\| rc == VERR_NET_ADDRESS_IN_USE)
664	{
665	pUVM->vm.s.pvDBGC = pvUser;
666	#endif
667	/*
668	* Init the Guest Context components.
669	*/
670	rc = vmR3InitGC(pVM);
671	if (RT_SUCCESS(rc))
672	{
673	/*
674	* Now we can safely set the VM halt method to default.
675	*/
676	rc = vmR3SetHaltMethodU(pUVM, VMHALTMETHOD_DEFAULT);
677	if (RT_SUCCESS(rc))
678	{
679	/*
680	* Set the state and link into the global list.
681	*/
682	vmR3SetState(pVM, VMSTATE_CREATED, VMSTATE_CREATING);
683	pUVM->pNext = g_pUVMsHead;
684	g_pUVMsHead = pUVM;
685
686	#ifdef LOG_ENABLED
687	RTLogSetCustomPrefixCallback(NULL, vmR3LogPrefixCallback, pUVM);
688	#endif
689	return VINF_SUCCESS;
690	}
691	}
692	#ifdef VBOX_WITH_DEBUGGER
693	DBGCTcpTerminate(pVM, pUVM->vm.s.pvDBGC);
694	pUVM->vm.s.pvDBGC = NULL;
695	}
696	#endif
697	//..
698	}
699	}
700	vmR3Destroy(pVM);
701	}
702	}
703	//..
704
705	/* Clean CFGM. */
706	int rc2 = CFGMR3Term(pVM);
707	AssertRC(rc2);
708	}
709
710	/*
711	* Drop all references to VM and the VMCPU structures, then
712	* tell GVMM to destroy the VM.
713	*/
714	pUVM->pVM = NULL;
715	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
716	{
717	pUVM->aCpus[i].pVM = NULL;
718	pUVM->aCpus[i].pVCpu = NULL;
719	}
720	Assert(pUVM->vm.s.enmHaltMethod == VMHALTMETHOD_BOOTSTRAP);
721
722	if (pUVM->cCpus > 1)
723	{
724	/* Poke the other EMTs since they may have stale pVM and pVCpu references
725	on the stack (see VMR3WaitU for instance) if they've been awakened after
726	VM creation. */
727	for (VMCPUID i = 1; i < pUVM->cCpus; i++)
728	VMR3NotifyCpuFFU(&pUVM->aCpus[i], 0);
729	RTThreadSleep(RT_MIN(100 + 25 (pUVM->cCpus - 1), 500)); / very sophisticated */
730	}
731
732	int rc2 = SUPR3CallVMMR0Ex(CreateVMReq.pVMR0, 0 /idCpu/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL);
733	AssertRC(rc2);
734	}
735	else
736	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("VM creation failed (GVMM)"));
737
738	LogFlow(("vmR3CreateU: returns %Rrc\n", rc));
739	return rc;
740	}
741
742
743	/**
744	* Register the calling EMT with GVM.
745	*
746	* @returns VBox status code.
747	* @param pVM The VM handle.
748	* @param idCpu The Virtual CPU ID.
749	*/
750	static DECLCALLBACK(int) vmR3RegisterEMT(PVM pVM, VMCPUID idCpu)
751	{
752	Assert(VMMGetCpuId(pVM) == idCpu);
753	int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, idCpu, VMMR0_DO_GVMM_REGISTER_VMCPU, 0, NULL);
754	if (RT_FAILURE(rc))
755	LogRel(("idCpu=%u rc=%Rrc\n", idCpu, rc));
756	return rc;
757	}
758
759
760	/**
761	* Initializes all R3 components of the VM
762	*/
763	static int vmR3InitRing3(PVM pVM, PUVM pUVM)
764	{
765	int rc;
766
767	/*
768	* Register the other EMTs with GVM.
769	*/
770	for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++)
771	{
772	rc = VMR3ReqCallWaitU(pUVM, idCpu, (PFNRT)vmR3RegisterEMT, 2, pVM, idCpu);
773	if (RT_FAILURE(rc))
774	return rc;
775	}
776
777	/*
778	* Init all R3 components, the order here might be important.
779	*/
780	rc = MMR3Init(pVM);
781	if (RT_SUCCESS(rc))
782	{
783	STAM_REG(pVM, &pVM->StatTotalInGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/InGC", STAMUNIT_TICKS_PER_CALL, "Profiling the total time spent in GC.");
784	STAM_REG(pVM, &pVM->StatSwitcherToGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToGC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
785	STAM_REG(pVM, &pVM->StatSwitcherToHC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToHC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to HC.");
786	STAM_REG(pVM, &pVM->StatSwitcherSaveRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SaveRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
787	STAM_REG(pVM, &pVM->StatSwitcherSysEnter, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SysEnter", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
788	STAM_REG(pVM, &pVM->StatSwitcherDebug, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Debug", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
789	STAM_REG(pVM, &pVM->StatSwitcherCR0, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR0", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
790	STAM_REG(pVM, &pVM->StatSwitcherCR4, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR4", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
791	STAM_REG(pVM, &pVM->StatSwitcherLgdt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lgdt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
792	STAM_REG(pVM, &pVM->StatSwitcherLidt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lidt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
793	STAM_REG(pVM, &pVM->StatSwitcherLldt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lldt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
794	STAM_REG(pVM, &pVM->StatSwitcherTSS, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/TSS", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
795	STAM_REG(pVM, &pVM->StatSwitcherJmpCR3, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/JmpCR3", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
796	STAM_REG(pVM, &pVM->StatSwitcherRstrRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/RstrRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
797
798	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
799	{
800	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltYield, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling halted state yielding.", "/PROF/VM/CPU%d/Halt/Yield", idCpu);
801	AssertRC(rc);
802	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltBlock, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling halted state blocking.", "/PROF/VM/CPU%d/Halt/Block", idCpu);
803	AssertRC(rc);
804	rc = STAMR3RegisterF(pVM, &pUVM->aCpus[idCpu].vm.s.StatHaltTimers, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS_PER_CALL, "Profiling halted state timer tasks.", "/PROF/VM/CPU%d/Halt/Timers", idCpu);
805	AssertRC(rc);
806	}
807
808	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocNew, STAMTYPE_COUNTER, "/VM/Req/AllocNew", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a new packet.");
809	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRaces, STAMTYPE_COUNTER, "/VM/Req/AllocRaces", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc causing races.");
810	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRecycled, STAMTYPE_COUNTER, "/VM/Req/AllocRecycled", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a recycled packet.");
811	STAM_REG(pVM, &pUVM->vm.s.StatReqFree, STAMTYPE_COUNTER, "/VM/Req/Free", STAMUNIT_OCCURENCES, "Number of VMR3ReqFree calls.");
812	STAM_REG(pVM, &pUVM->vm.s.StatReqFreeOverflow, STAMTYPE_COUNTER, "/VM/Req/FreeOverflow", STAMUNIT_OCCURENCES, "Number of times the request was actually freed.");
813	STAM_REG(pVM, &pUVM->vm.s.StatReqProcessed, STAMTYPE_COUNTER, "/VM/Req/Processed", STAMUNIT_OCCURENCES, "Number of processed requests (any queue).");
814	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.");
815	STAM_REG(pVM, &pUVM->vm.s.StatReqPushBackRaces, STAMTYPE_COUNTER, "/VM/Req/PushBackRaces", STAMUNIT_OCCURENCES, "Number of push back races.");
816
817	rc = CPUMR3Init(pVM);
818	if (RT_SUCCESS(rc))
819	{
820	rc = HWACCMR3Init(pVM);
821	if (RT_SUCCESS(rc))
822	{
823	rc = PGMR3Init(pVM);
824	if (RT_SUCCESS(rc))
825	{
826	rc = REMR3Init(pVM);
827	if (RT_SUCCESS(rc))
828	{
829	rc = MMR3InitPaging(pVM);
830	if (RT_SUCCESS(rc))
831	rc = TMR3Init(pVM);
832	if (RT_SUCCESS(rc))
833	{
834	rc = VMMR3Init(pVM);
835	if (RT_SUCCESS(rc))
836	{
837	rc = SELMR3Init(pVM);
838	if (RT_SUCCESS(rc))
839	{
840	rc = TRPMR3Init(pVM);
841	if (RT_SUCCESS(rc))
842	{
843	rc = CSAMR3Init(pVM);
844	if (RT_SUCCESS(rc))
845	{
846	rc = PATMR3Init(pVM);
847	if (RT_SUCCESS(rc))
848	{
849	#ifdef VBOX_WITH_VMI
850	rc = PARAVR3Init(pVM);
851	if (RT_SUCCESS(rc))
852	{
853	#endif
854	rc = IOMR3Init(pVM);
855	if (RT_SUCCESS(rc))
856	{
857	rc = EMR3Init(pVM);
858	if (RT_SUCCESS(rc))
859	{
860	rc = DBGFR3Init(pVM);
861	if (RT_SUCCESS(rc))
862	{
863	rc = PDMR3Init(pVM);
864	if (RT_SUCCESS(rc))
865	{
866	rc = PGMR3InitDynMap(pVM);
867	if (RT_SUCCESS(rc))
868	rc = MMR3HyperInitFinalize(pVM);
869	if (RT_SUCCESS(rc))
870	rc = PATMR3InitFinalize(pVM);
871	if (RT_SUCCESS(rc))
872	rc = PGMR3InitFinalize(pVM);
873	if (RT_SUCCESS(rc))
874	rc = SELMR3InitFinalize(pVM);
875	if (RT_SUCCESS(rc))
876	rc = TMR3InitFinalize(pVM);
877	if (RT_SUCCESS(rc))
878	rc = VMMR3InitFinalize(pVM);
879	if (RT_SUCCESS(rc))
880	rc = REMR3InitFinalize(pVM);
881	if (RT_SUCCESS(rc))
882	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING3);
883	if (RT_SUCCESS(rc))
884	{
885	LogFlow(("vmR3InitRing3: returns %Rrc\n", VINF_SUCCESS));
886	return VINF_SUCCESS;
887	}
888	int rc2 = PDMR3Term(pVM);
889	AssertRC(rc2);
890	}
891	int rc2 = DBGFR3Term(pVM);
892	AssertRC(rc2);
893	}
894	int rc2 = EMR3Term(pVM);
895	AssertRC(rc2);
896	}
897	int rc2 = IOMR3Term(pVM);
898	AssertRC(rc2);
899	}
900	#ifdef VBOX_WITH_VMI
901	int rc2 = PARAVR3Term(pVM);
902	AssertRC(rc2);
903	}
904	#endif
905	int rc2 = PATMR3Term(pVM);
906	AssertRC(rc2);
907	}
908	int rc2 = CSAMR3Term(pVM);
909	AssertRC(rc2);
910	}
911	int rc2 = TRPMR3Term(pVM);
912	AssertRC(rc2);
913	}
914	int rc2 = SELMR3Term(pVM);
915	AssertRC(rc2);
916	}
917	int rc2 = VMMR3Term(pVM);
918	AssertRC(rc2);
919	}
920	int rc2 = TMR3Term(pVM);
921	AssertRC(rc2);
922	}
923	int rc2 = REMR3Term(pVM);
924	AssertRC(rc2);
925	}
926	int rc2 = PGMR3Term(pVM);
927	AssertRC(rc2);
928	}
929	int rc2 = HWACCMR3Term(pVM);
930	AssertRC(rc2);
931	}
932	//int rc2 = CPUMR3Term(pVM);
933	//AssertRC(rc2);
934	}
935	/* MMR3Term is not called here because it'll kill the heap. */
936	}
937
938	LogFlow(("vmR3InitRing3: returns %Rrc\n", rc));
939	return rc;
940	}
941
942
943	/**
944	* Initializes all VM CPU components of the VM
945	*/
946	static int vmR3InitVMCpu(PVM pVM)
947	{
948	int rc = VINF_SUCCESS;
949	int rc2;
950
951	rc = CPUMR3InitCPU(pVM);
952	if (RT_SUCCESS(rc))
953	{
954	rc = HWACCMR3InitCPU(pVM);
955	if (RT_SUCCESS(rc))
956	{
957	rc = PGMR3InitCPU(pVM);
958	if (RT_SUCCESS(rc))
959	{
960	rc = TMR3InitCPU(pVM);
961	if (RT_SUCCESS(rc))
962	{
963	rc = VMMR3InitCPU(pVM);
964	if (RT_SUCCESS(rc))
965	{
966	rc = EMR3InitCPU(pVM);
967	if (RT_SUCCESS(rc))
968	{
969	LogFlow(("vmR3InitVMCpu: returns %Rrc\n", VINF_SUCCESS));
970	return VINF_SUCCESS;
971	}
972
973	rc2 = VMMR3TermCPU(pVM);
974	AssertRC(rc2);
975	}
976	rc2 = TMR3TermCPU(pVM);
977	AssertRC(rc2);
978	}
979	rc2 = PGMR3TermCPU(pVM);
980	AssertRC(rc2);
981	}
982	rc2 = HWACCMR3TermCPU(pVM);
983	AssertRC(rc2);
984	}
985	rc2 = CPUMR3TermCPU(pVM);
986	AssertRC(rc2);
987	}
988	LogFlow(("vmR3InitVMCpu: returns %Rrc\n", rc));
989	return rc;
990	}
991
992
993	/**
994	* Initializes all R0 components of the VM
995	*/
996	static int vmR3InitRing0(PVM pVM)
997	{
998	LogFlow(("vmR3InitRing0:\n"));
999
1000	/*
1001	* Check for FAKE suplib mode.
1002	*/
1003	int rc = VINF_SUCCESS;
1004	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
1005	if (!psz \|\| strcmp(psz, "fake"))
1006	{
1007	/*
1008	* Call the VMMR0 component and let it do the init.
1009	*/
1010	rc = VMMR3InitR0(pVM);
1011	}
1012	else
1013	Log(("vmR3InitRing0: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1014
1015	/*
1016	* Do notifications and return.
1017	*/
1018	if (RT_SUCCESS(rc))
1019	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING0);
1020
1021	/** @todo Move this to the VMINITCOMPLETED_RING0 notification handler. */
1022	if (RT_SUCCESS(rc))
1023	rc = HWACCMR3InitFinalizeR0(pVM);
1024
1025	LogFlow(("vmR3InitRing0: returns %Rrc\n", rc));
1026	return rc;
1027	}
1028
1029
1030	/**
1031	* Initializes all GC components of the VM
1032	*/
1033	static int vmR3InitGC(PVM pVM)
1034	{
1035	LogFlow(("vmR3InitGC:\n"));
1036
1037	/*
1038	* Check for FAKE suplib mode.
1039	*/
1040	int rc = VINF_SUCCESS;
1041	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
1042	if (!psz \|\| strcmp(psz, "fake"))
1043	{
1044	/*
1045	* Call the VMMR0 component and let it do the init.
1046	*/
1047	rc = VMMR3InitRC(pVM);
1048	}
1049	else
1050	Log(("vmR3InitGC: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1051
1052	/*
1053	* Do notifications and return.
1054	*/
1055	if (RT_SUCCESS(rc))
1056	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_GC);
1057	LogFlow(("vmR3InitGC: returns %Rrc\n", rc));
1058	return rc;
1059	}
1060
1061
1062	/**
1063	* Do init completed notifications.
1064	* This notifications can fail.
1065	*
1066	* @param pVM The VM handle.
1067	* @param enmWhat What's completed.
1068	*/
1069	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
1070	{
1071	return VINF_SUCCESS;
1072	}
1073
1074
1075	/**
1076	* Logger callback for inserting a custom prefix.
1077	*
1078	* @returns Number of chars written.
1079	* @param pLogger The logger.
1080	* @param pchBuf The output buffer.
1081	* @param cchBuf The output buffer size.
1082	* @param pvUser Pointer to the UVM structure.
1083	*/
1084	static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1085	{
1086	AssertReturn(cchBuf >= 2, 0);
1087	PUVM pUVM = (PUVM)pvUser;
1088	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
1089	if (pUVCpu)
1090	{
1091	static const char s_szHex[17] = "0123456789abcdef";
1092	VMCPUID const idCpu = pUVCpu->idCpu;
1093	pchBuf[1] = s_szHex[ idCpu & 15];
1094	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1095	}
1096	else
1097	{
1098	pchBuf[0] = 'x';
1099	pchBuf[1] = 'y';
1100	}
1101
1102	return 2;
1103	}
1104
1105
1106	/**
1107	* Calls the relocation functions for all VMM components so they can update
1108	* any GC pointers. When this function is called all the basic VM members
1109	* have been updated and the actual memory relocation have been done
1110	* by the PGM/MM.
1111	*
1112	* This is used both on init and on runtime relocations.
1113	*
1114	* @param pVM VM handle.
1115	* @param offDelta Relocation delta relative to old location.
1116	*/
1117	VMMR3DECL(void) VMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1118	{
1119	LogFlow(("VMR3Relocate: offDelta=%RGv\n", offDelta));
1120
1121	/*
1122	* The order here is very important!
1123	*/
1124	PGMR3Relocate(pVM, offDelta);
1125	PDMR3LdrRelocateU(pVM->pUVM, offDelta);
1126	PGMR3Relocate(pVM, 0); /* Repeat after PDM relocation. */
1127	CPUMR3Relocate(pVM);
1128	HWACCMR3Relocate(pVM);
1129	SELMR3Relocate(pVM);
1130	VMMR3Relocate(pVM, offDelta);
1131	SELMR3Relocate(pVM); /* !hack! fix stack! */
1132	TRPMR3Relocate(pVM, offDelta);
1133	PATMR3Relocate(pVM);
1134	CSAMR3Relocate(pVM, offDelta);
1135	IOMR3Relocate(pVM, offDelta);
1136	EMR3Relocate(pVM);
1137	TMR3Relocate(pVM, offDelta);
1138	DBGFR3Relocate(pVM, offDelta);
1139	PDMR3Relocate(pVM, offDelta);
1140	}
1141
1142
1143	/**
1144	* EMT rendezvous worker for VMR3PowerOn.
1145	*
1146	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
1147	* code, see FNVMMEMTRENDEZVOUS.)
1148	*
1149	* @param pVM The VM handle.
1150	* @param pVCpu The VMCPU handle of the EMT.
1151	* @param pvUser Ignored.
1152	*/
1153	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser)
1154	{
1155	LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1156	Assert(!pvUser); NOREF(pvUser);
1157
1158	/*
1159	* The first thread thru here tries to change the state. We shouldn't be
1160	* called again if this fails.
1161	*/
1162	if (pVCpu->idCpu == pVM->cCpus - 1)
1163	{
1164	int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED);
1165	if (RT_FAILURE(rc))
1166	return rc;
1167	}
1168
1169	VMSTATE enmVMState = VMR3GetState(pVM);
1170	AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON,
1171	("%s\n", VMR3GetStateName(enmVMState)),
1172	VERR_INTERNAL_ERROR_4);
1173
1174	/*
1175	* All EMTs changes their state to started.
1176	*/
1177	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1178
1179	/*
1180	* EMT(0) is last thru here and it will make the notification calls
1181	* and advance the state.
1182	*/
1183	if (pVCpu->idCpu == 0)
1184	{
1185	PDMR3PowerOn(pVM);
1186	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON);
1187	}
1188
1189	return VINF_SUCCESS;
1190	}
1191
1192
1193	/**
1194	* Powers on the virtual machine.
1195	*
1196	* @returns VBox status code.
1197	*
1198	* @param pVM The VM to power on.
1199	*
1200	* @thread Any thread.
1201	* @vmstate Created
1202	* @vmstateto PoweringOn+Running
1203	*/
1204	VMMR3DECL(int) VMR3PowerOn(PVM pVM)
1205	{
1206	LogFlow(("VMR3PowerOn: pVM=%p\n", pVM));
1207	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1208
1209	/*
1210	* Gather all the EMTs to reduce the init TSC drift and keep
1211	* the state changing APIs a bit uniform.
1212	*/
1213	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1214	vmR3PowerOn, NULL);
1215	LogFlow(("VMR3PowerOn: returns %Rrc\n", rc));
1216	return rc;
1217	}
1218
1219
1220	/**
1221	* Does the suspend notifications.
1222	*
1223	* @param pVM The VM handle.
1224	* @thread EMT(0)
1225	*/
1226	static void vmR3SuspendDoWork(PVM pVM)
1227	{
1228	PDMR3Suspend(pVM);
1229	}
1230
1231
1232	/**
1233	* EMT rendezvous worker for VMR3Suspend.
1234	*
1235	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
1236	* return code, see FNVMMEMTRENDEZVOUS.)
1237	*
1238	* @param pVM The VM handle.
1239	* @param pVCpu The VMCPU handle of the EMT.
1240	* @param pvUser Ignored.
1241	*/
1242	static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1243	{
1244	LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1245	Assert(!pvUser); NOREF(pvUser);
1246
1247	/*
1248	* The first EMT switches the state to suspending. If this fails because
1249	* something was racing us in one way or the other, there will be no more
1250	* calls and thus the state assertion below is not going to annoy anyone.
1251	*/
1252	if (pVCpu->idCpu == pVM->cCpus - 1)
1253	{
1254	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1255	VMSTATE_SUSPENDING, VMSTATE_RUNNING,
1256	VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS);
1257	if (RT_FAILURE(rc))
1258	return rc;
1259	}
1260
1261	VMSTATE enmVMState = VMR3GetState(pVM);
1262	AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING
1263	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS,
1264	("%s\n", VMR3GetStateName(enmVMState)),
1265	VERR_INTERNAL_ERROR_4);
1266
1267	/*
1268	* EMT(0) does the actually suspending after all the other CPUs have
1269	* been thru here.
1270	*/
1271	if (pVCpu->idCpu == 0)
1272	{
1273	vmR3SuspendDoWork(pVM);
1274
1275	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1276	VMSTATE_SUSPENDED, VMSTATE_SUSPENDING,
1277	VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS);
1278	if (RT_FAILURE(rc))
1279	return VERR_INTERNAL_ERROR_3;
1280	}
1281
1282	return VINF_EM_SUSPEND;
1283	}
1284
1285
1286	/**
1287	* Suspends a running VM.
1288	*
1289	* @returns VBox status code. When called on EMT, this will be a strict status
1290	* code that has to be propagated up the call stack.
1291	*
1292	* @param pVM The VM to suspend.
1293	*
1294	* @thread Any thread.
1295	* @vmstate Running or RunningLS
1296	* @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS
1297	*/
1298	VMMR3DECL(int) VMR3Suspend(PVM pVM)
1299	{
1300	LogFlow(("VMR3Suspend: pVM=%p\n", pVM));
1301	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1302
1303	/*
1304	* Gather all the EMTs to make sure there are no races before
1305	* changing the VM state.
1306	*/
1307	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1308	vmR3Suspend, NULL);
1309	LogFlow(("VMR3Suspend: returns %Rrc\n", rc));
1310	return rc;
1311	}
1312
1313
1314	/**
1315	* EMT rendezvous worker for VMR3Resume.
1316	*
1317	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1318	* return code, see FNVMMEMTRENDEZVOUS.)
1319	*
1320	* @param pVM The VM handle.
1321	* @param pVCpu The VMCPU handle of the EMT.
1322	* @param pvUser Ignored.
1323	*/
1324	static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser)
1325	{
1326	LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1327	Assert(!pvUser); NOREF(pvUser);
1328
1329	/*
1330	* The first thread thru here tries to change the state. We shouldn't be
1331	* called again if this fails.
1332	*/
1333	if (pVCpu->idCpu == pVM->cCpus - 1)
1334	{
1335	int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED);
1336	if (RT_FAILURE(rc))
1337	return rc;
1338	}
1339
1340	VMSTATE enmVMState = VMR3GetState(pVM);
1341	AssertMsgReturn(enmVMState == VMSTATE_RESUMING,
1342	("%s\n", VMR3GetStateName(enmVMState)),
1343	VERR_INTERNAL_ERROR_4);
1344
1345	#if 0
1346	/*
1347	* All EMTs changes their state to started.
1348	*/
1349	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1350	#endif
1351
1352	/*
1353	* EMT(0) is last thru here and it will make the notification calls
1354	* and advance the state.
1355	*/
1356	if (pVCpu->idCpu == 0)
1357	{
1358	PDMR3Resume(pVM);
1359	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING);
1360	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1361	}
1362
1363	return VINF_EM_RESUME;
1364	}
1365
1366
1367	/**
1368	* Resume VM execution.
1369	*
1370	* @returns VBox status code. When called on EMT, this will be a strict status
1371	* code that has to be propagated up the call stack.
1372	*
1373	* @param pVM The VM to resume.
1374	*
1375	* @thread Any thread.
1376	* @vmstate Suspended
1377	* @vmstateto Running
1378	*/
1379	VMMR3DECL(int) VMR3Resume(PVM pVM)
1380	{
1381	LogFlow(("VMR3Resume: pVM=%p\n", pVM));
1382	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1383
1384	/*
1385	* Gather all the EMTs to make sure there are no races before
1386	* changing the VM state.
1387	*/
1388	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1389	vmR3Resume, NULL);
1390	LogFlow(("VMR3Resume: returns %Rrc\n", rc));
1391	return rc;
1392	}
1393
1394
1395	/**
1396	* EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM
1397	* after the live step has been completed.
1398	*
1399	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1400	* return code, see FNVMMEMTRENDEZVOUS.)
1401	*
1402	* @param pVM The VM handle.
1403	* @param pVCpu The VMCPU handle of the EMT.
1404	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1405	*/
1406	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1407	{
1408	LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1409	bool pfSuspended = (bool )pvUser;
1410
1411	/*
1412	* The first thread thru here tries to change the state. We shouldn't be
1413	* called again if this fails.
1414	*/
1415	if (pVCpu->idCpu == pVM->cCpus - 1U)
1416	{
1417	PUVM pUVM = pVM->pUVM;
1418	int rc;
1419
1420	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
1421	VMSTATE enmVMState = pVM->enmVMState;
1422	switch (enmVMState)
1423	{
1424	case VMSTATE_RUNNING_LS:
1425	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS);
1426	rc = VINF_SUCCESS;
1427	break;
1428
1429	case VMSTATE_SUSPENDED_EXT_LS:
1430	case VMSTATE_SUSPENDED_LS: /* (via reset) */
1431	rc = VINF_SUCCESS;
1432	break;
1433
1434	case VMSTATE_DEBUGGING_LS:
1435	rc = VERR_TRY_AGAIN;
1436	break;
1437
1438	case VMSTATE_OFF_LS:
1439	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS);
1440	rc = VERR_SSM_LIVE_POWERED_OFF;
1441	break;
1442
1443	case VMSTATE_FATAL_ERROR_LS:
1444	vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS);
1445	rc = VERR_SSM_LIVE_FATAL_ERROR;
1446	break;
1447
1448	case VMSTATE_GURU_MEDITATION_LS:
1449	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS);
1450	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1451	break;
1452
1453	case VMSTATE_POWERING_OFF_LS:
1454	case VMSTATE_SUSPENDING_EXT_LS:
1455	case VMSTATE_RESETTING_LS:
1456	default:
1457	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
1458	rc = VERR_INTERNAL_ERROR_3;
1459	break;
1460	}
1461	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
1462	if (RT_FAILURE(rc))
1463	{
1464	LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState)));
1465	return rc;
1466	}
1467	}
1468
1469	VMSTATE enmVMState = VMR3GetState(pVM);
1470	AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS,
1471	("%s\n", VMR3GetStateName(enmVMState)),
1472	VERR_INTERNAL_ERROR_4);
1473
1474	/*
1475	* Only EMT(0) have work to do since it's last thru here.
1476	*/
1477	if (pVCpu->idCpu == 0)
1478	{
1479	vmR3SuspendDoWork(pVM);
1480	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1,
1481	VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
1482	if (RT_FAILURE(rc))
1483	return VERR_INTERNAL_ERROR_3;
1484
1485	*pfSuspended = true;
1486	}
1487
1488	return VINF_EM_SUSPEND;
1489	}
1490
1491
1492	/**
1493	* EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a
1494	* SSMR3LiveDoStep1 failure.
1495	*
1496	* Doing this as a rendezvous operation avoids all annoying transition
1497	* states.
1498	*
1499	* @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_*
1500	* status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
1501	*
1502	* @param pVM The VM handle.
1503	* @param pVCpu The VMCPU handle of the EMT.
1504	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1505	*/
1506	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser)
1507	{
1508	LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1509	bool pfSuspended = (bool )pvUser;
1510	NOREF(pVCpu);
1511
1512	int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 6,
1513	VMSTATE_OFF, VMSTATE_OFF_LS, /* 1 */
1514	VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, /* 2 */
1515	VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, /* 3 */
1516	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_LS, /* 4 */
1517	VMSTATE_SUSPENDED, VMSTATE_SAVING,
1518	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS,
1519	VMSTATE_RUNNING, VMSTATE_RUNNING_LS,
1520	VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS);
1521	if (rc == 1)
1522	rc = VERR_SSM_LIVE_POWERED_OFF;
1523	else if (rc == 2)
1524	rc = VERR_SSM_LIVE_FATAL_ERROR;
1525	else if (rc == 3)
1526	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1527	else if (rc == 4)
1528	{
1529	*pfSuspended = true;
1530	rc = VINF_SUCCESS;
1531	}
1532	else if (rc > 0)
1533	rc = VINF_SUCCESS;
1534	return rc;
1535	}
1536
1537
1538	/**
1539	* EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save.
1540	*
1541	* @returns VBox status code.
1542	* @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called.
1543	*
1544	* @param pVM The VM handle.
1545	* @param pSSM The handle of saved state operation.
1546	*
1547	* @thread EMT(0)
1548	*/
1549	static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM)
1550	{
1551	LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM));
1552	VM_ASSERT_EMT0(pVM);
1553
1554	/*
1555	* Advance the state and mark if VMR3Suspend was called.
1556	*/
1557	int rc = VINF_SUCCESS;
1558	VMSTATE enmVMState = VMR3GetState(pVM);
1559	if (enmVMState == VMSTATE_SUSPENDED_LS)
1560	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS);
1561	else
1562	{
1563	if (enmVMState != VMSTATE_SAVING)
1564	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS);
1565	rc = VINF_SSM_LIVE_SUSPENDED;
1566	}
1567
1568	/*
1569	* Finish up and release the handle. Careful with the status codes.
1570	*/
1571	int rc2 = SSMR3LiveDoStep2(pSSM);
1572	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1573	rc = rc2;
1574
1575	rc2 = SSMR3LiveDone(pSSM);
1576	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1577	rc = rc2;
1578
1579	/*
1580	* Advance to the final state and return.
1581	*/
1582	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1583	Assert(rc > VINF_EM_LAST \|\| rc < VINF_EM_FIRST);
1584	return rc;
1585	}
1586
1587
1588	/**
1589	* Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or
1590	* SSMR3LiveSave.
1591	*
1592	* @returns VBox status code.
1593	*
1594	* @param pVM The VM handle.
1595	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1596	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1597	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1598	* @param pvStreamOpsUser The user argument to the stream methods.
1599	* @param enmAfter What to do afterwards.
1600	* @param pfnProgress Progress callback. Optional.
1601	* @param pvProgressUser User argument for the progress callback.
1602	* @param ppSSM Where to return the saved state handle in case of a
1603	* live snapshot scenario.
1604	* @thread EMT
1605	*/
1606	static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1607	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, PSSMHANDLE ppSSM)
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	int 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	Assert(!pStreamOps);
1633	rc = SSMR3Save(pVM, pszFilename, enmAfter, pfnProgress, pvProgressUser);
1634	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1635	}
1636	else if (rc == 2 \|\| enmAfter == SSMAFTER_TELEPORT)
1637	{
1638	if (enmAfter == SSMAFTER_TELEPORT)
1639	pVM->vm.s.fTeleportedAndNotFullyResumedYet = true;
1640	rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1641	enmAfter, pfnProgress, pvProgressUser, ppSSM);
1642	/* (We're not subject to cancellation just yet.) */
1643	}
1644	else
1645	Assert(RT_FAILURE(rc));
1646	return rc;
1647	}
1648
1649
1650	/**
1651	* Commmon worker for VMR3Save and VMR3Teleport.
1652	*
1653	* @returns VBox status code.
1654	*
1655	* @param pVM The VM handle.
1656	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1657	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1658	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1659	* @param pvStreamOpsUser The user argument to the stream methods.
1660	* @param enmAfter What to do afterwards.
1661	* @param pfnProgress Progress callback. Optional.
1662	* @param pvProgressUser User argument for the progress callback.
1663	* @param pfSuspended Set if we suspended the VM.
1664	*
1665	* @thread Non-EMT
1666	*/
1667	static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime,
1668	const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1669	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1670	{
1671	/*
1672	* Request the operation in EMT(0).
1673	*/
1674	PSSMHANDLE pSSM;
1675	int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/,
1676	(PFNRT)vmR3Save, 9, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1677	enmAfter, pfnProgress, pvProgressUser, &pSSM);
1678	if ( RT_SUCCESS(rc)
1679	&& pSSM)
1680	{
1681	/*
1682	* Live snapshot.
1683	*
1684	* The state handling here is kind of tricky, doing it on EMT(0) helps
1685	* a bit. See the VMSTATE diagram for details.
1686	*/
1687	rc = SSMR3LiveDoStep1(pSSM);
1688	if (RT_SUCCESS(rc))
1689	{
1690	if (VMR3GetState(pVM) != VMSTATE_SAVING)
1691	for (;;)
1692	{
1693	/* Try suspend the VM. */
1694	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1695	vmR3LiveDoSuspend, pfSuspended);
1696	if (rc != VERR_TRY_AGAIN)
1697	break;
1698
1699	/* Wait for the state to change. */
1700	RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */
1701	}
1702	if (RT_SUCCESS(rc))
1703	rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM);
1704	else
1705	{
1706	int rc2 = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1707	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1708	}
1709	}
1710	else
1711	{
1712	int rc2 = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1713	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1714
1715	rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, pfSuspended);
1716	if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED)
1717	rc = rc2;
1718	}
1719	}
1720
1721	return rc;
1722	}
1723
1724
1725	/**
1726	* Save current VM state.
1727	*
1728	* Can be used for both saving the state and creating snapshots.
1729	*
1730	* When called for a VM in the Running state, the saved state is created live
1731	* and the VM is only suspended when the final part of the saving is preformed.
1732	* The VM state will not be restored to Running in this case and it's up to the
1733	* caller to call VMR3Resume if this is desirable. (The rational is that the
1734	* caller probably wish to reconfigure the disks before resuming the VM.)
1735	*
1736	* @returns VBox status code.
1737	*
1738	* @param pVM The VM which state should be saved.
1739	* @param pszFilename The name of the save state file.
1740	* @param fContinueAfterwards Whether continue execution afterwards or not.
1741	* When in doubt, set this to true.
1742	* @param pfnProgress Progress callback. Optional.
1743	* @param pvUser User argument for the progress callback.
1744	* @param pfSuspended Set if we suspended the VM.
1745	*
1746	* @thread Non-EMT.
1747	* @vmstate Suspended or Running
1748	* @vmstateto Saving+Suspended or
1749	* RunningLS+SuspeningLS+SuspendedLS+Saving+Suspended.
1750	*/
1751	VMMR3DECL(int) VMR3Save(PVM pVM, const char *pszFilename, bool fContinueAfterwards,
1752	PFNVMPROGRESS pfnProgress, void pvUser, bool pfSuspended)
1753	{
1754	LogFlow(("VMR3Save: pVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p pfSuspended=%p\n",
1755	pVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser, pfSuspended));
1756
1757	/*
1758	* Validate input.
1759	*/
1760	AssertPtr(pfSuspended);
1761	*pfSuspended = false;
1762	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1763	VM_ASSERT_OTHER_THREAD(pVM);
1764	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1765	AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
1766	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1767
1768	/*
1769	* Join paths with VMR3Teleport.
1770	*/
1771	SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY;
1772	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
1773	pszFilename, NULL /pStreamOps/, NULL /pvStreamOpsUser/,
1774	enmAfter, pfnProgress, pvUser, pfSuspended);
1775	LogFlow(("VMR3Save: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1776	return rc;
1777	}
1778
1779
1780	/**
1781	* Teleport the VM (aka live migration).
1782	*
1783	* @returns VBox status code.
1784	*
1785	* @param pVM The VM which state should be saved.
1786	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1787	* @param pStreamOps The stream methods.
1788	* @param pvStreamOpsUser The user argument to the stream methods.
1789	* @param pfnProgress Progress callback. Optional.
1790	* @param pvProgressUser User argument for the progress callback.
1791	* @param pfSuspended Set if we suspended the VM.
1792	*
1793	* @thread Non-EMT.
1794	* @vmstate Suspended or Running
1795	* @vmstateto Saving+Suspended or
1796	* RunningLS+SuspeningLS+SuspendedLS+Saving+Suspended.
1797	*/
1798	VMMR3DECL(int) VMR3Teleport(PVM pVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1799	PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1800	{
1801	LogFlow(("VMR3Teleport: pVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n",
1802	pVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1803
1804	/*
1805	* Validate input.
1806	*/
1807	AssertPtr(pfSuspended);
1808	*pfSuspended = false;
1809	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1810	VM_ASSERT_OTHER_THREAD(pVM);
1811	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1812	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1813
1814	/*
1815	* Join paths with VMR3Save.
1816	*/
1817	int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime,
1818	NULL /pszFilename/, pStreamOps, pvStreamOpsUser,
1819	SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended);
1820	LogFlow(("VMR3Teleport: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1821	return rc;
1822	}
1823
1824
1825
1826	/**
1827	* EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream.
1828	*
1829	* @returns VBox status code.
1830	*
1831	* @param pVM The VM handle.
1832	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1833	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1834	* @param pvStreamOpsUser The user argument to the stream methods.
1835	* @param pfnProgress Progress callback. Optional.
1836	* @param pvUser User argument for the progress callback.
1837	* @param fTeleporting Indicates whether we're teleporting or not.
1838	*
1839	* @thread EMT.
1840	*/
1841	static DECLCALLBACK(int) vmR3Load(PVM pVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1842	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1843	{
1844	LogFlow(("vmR3Load: pVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1845	pVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1846
1847	/*
1848	* Validate input (paranoia).
1849	*/
1850	AssertPtr(pVM);
1851	AssertPtrNull(pszFilename);
1852	AssertPtrNull(pStreamOps);
1853	AssertPtrNull(pfnProgress);
1854
1855	/*
1856	* Change the state and perform the load.
1857	*
1858	* Always perform a relocation round afterwards to make sure hypervisor
1859	* selectors and such are correct.
1860	*/
1861	int rc = vmR3TrySetState(pVM, "VMR3Load", 2,
1862	VMSTATE_LOADING, VMSTATE_CREATED,
1863	VMSTATE_LOADING, VMSTATE_SUSPENDED);
1864	if (RT_FAILURE(rc))
1865	return rc;
1866	pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting;
1867
1868	uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pVM);
1869	rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser);
1870	if (RT_SUCCESS(rc))
1871	{
1872	VMR3Relocate(pVM, 0 /offDelta/);
1873	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING);
1874	}
1875	else
1876	{
1877	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1878	vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING);
1879	if (cErrorsPriorToSave == VMR3GetErrorCount(pVM))
1880	rc = VMSetError(pVM, rc, RT_SRC_POS,
1881	N_("Unable to restore the virtual machine's saved state from '%s'. "
1882	"It may be damaged or from an older version of VirtualBox. "
1883	"Please discard the saved state before starting the virtual machine"),
1884	pszFilename);
1885	}
1886
1887	return rc;
1888	}
1889
1890
1891	/**
1892	* Loads a VM state into a newly created VM or a one that is suspended.
1893	*
1894	* To restore a saved state on VM startup, call this function and then resume
1895	* the VM instead of powering it on.
1896	*
1897	* @returns VBox status code.
1898	*
1899	* @param pVM The VM handle.
1900	* @param pszFilename The name of the save state file.
1901	* @param pfnProgress Progress callback. Optional.
1902	* @param pvUser User argument for the progress callback.
1903	*
1904	* @thread Any thread.
1905	* @vmstate Created, Suspended
1906	* @vmstateto Loading+Suspended
1907	*/
1908	VMMR3DECL(int) VMR3LoadFromFile(PVM pVM, const char pszFilename, PFNVMPROGRESS pfnProgress, void pvUser)
1909	{
1910	LogFlow(("VMR3LoadFromFile: pVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n",
1911	pVM, pszFilename, pszFilename, pfnProgress, pvUser));
1912
1913	/*
1914	* Validate input.
1915	*/
1916	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1917	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1918
1919	/*
1920	* Forward the request to EMT(0). No need to setup a rendezvous here
1921	* since there is no execution taking place when this call is allowed.
1922	*/
1923	int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1924	pVM, pszFilename, (uintptr_t)NULL /pStreamOps/, (uintptr_t)NULL /pvStreamOpsUser/, pfnProgress, pvUser,
1925	false /fTeleporting/);
1926	LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc));
1927	return rc;
1928	}
1929
1930
1931	/**
1932	* VMR3LoadFromFile for arbritrary file streams.
1933	*
1934	* @returns VBox status code.
1935	*
1936	* @param pVM The VM handle.
1937	* @param pStreamOps The stream methods.
1938	* @param pvStreamOpsUser The user argument to the stream methods.
1939	* @param pfnProgress Progress callback. Optional.
1940	* @param pvProgressUser User argument for the progress callback.
1941	*
1942	* @thread Any thread.
1943	* @vmstate Created, Suspended
1944	* @vmstateto Loading+Suspended
1945	*/
1946	VMMR3DECL(int) VMR3LoadFromStream(PVM pVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1947	PFNVMPROGRESS pfnProgress, void *pvProgressUser)
1948	{
1949	LogFlow(("VMR3LoadFromStream: pVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p\n",
1950	pVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1951
1952	/*
1953	* Validate input.
1954	*/
1955	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1956	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1957
1958	/*
1959	* Forward the request to EMT(0). No need to setup a rendezvous here
1960	* since there is no execution taking place when this call is allowed.
1961	*/
1962	int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1963	pVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser,
1964	true /fTeleporting/);
1965	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
1966	return rc;
1967	}
1968
1969
1970	/**
1971	* EMT rendezvous worker for VMR3PowerOff.
1972	*
1973	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict
1974	* return code, see FNVMMEMTRENDEZVOUS.)
1975	*
1976	* @param pVM The VM handle.
1977	* @param pVCpu The VMCPU handle of the EMT.
1978	* @param pvUser Ignored.
1979	*/
1980	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser)
1981	{
1982	LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1983	Assert(!pvUser); NOREF(pvUser);
1984
1985	/*
1986	* The first EMT thru here will change the state to PoweringOff.
1987	*/
1988	if (pVCpu->idCpu == pVM->cCpus - 1)
1989	{
1990	int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 11,
1991	VMSTATE_POWERING_OFF, VMSTATE_RUNNING, /* 1 */
1992	VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, /* 2 */
1993	VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, /* 3 */
1994	VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, /* 4 */
1995	VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, /* 5 */
1996	VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, /* 6 */
1997	VMSTATE_POWERING_OFF, VMSTATE_CREATED, /* 7 / /* @todo update the diagram! */
1998	VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, /* 8 */
1999	VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, /* 9 */
2000	VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS,/* 10 */
2001	VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); /* 11 */
2002	if (RT_FAILURE(rc))
2003	return rc;
2004	if (rc >= 7)
2005	SSMR3Cancel(pVM);
2006	}
2007
2008	/*
2009	* Check the state.
2010	*/
2011	VMSTATE enmVMState = VMR3GetState(pVM);
2012	AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF
2013	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
2014	("%s\n", VMR3GetStateName(enmVMState)),
2015	VERR_VM_INVALID_VM_STATE);
2016
2017	/*
2018	* EMT(0) does the actual power off work here after all the other EMTs
2019	* have been thru and entered the STOPPED state.
2020	*/
2021	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED);
2022	if (pVCpu->idCpu == 0)
2023	{
2024	/*
2025	* For debugging purposes, we will log a summary of the guest state at this point.
2026	*/
2027	if (enmVMState != VMSTATE_GURU_MEDITATION)
2028	{
2029	/** @todo SMP support? */
2030	/** @todo make the state dumping at VMR3PowerOff optional. */
2031	RTLogRelPrintf("**************** Guest state at power off ****************\n");
2032	DBGFR3Info(pVM, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2033	RTLogRelPrintf("***\n");
2034	DBGFR3Info(pVM, "mode", NULL, DBGFR3InfoLogRelHlp());
2035	RTLogRelPrintf("***\n");
2036	DBGFR3Info(pVM, "activetimers", NULL, DBGFR3InfoLogRelHlp());
2037	RTLogRelPrintf("***\n");
2038	DBGFR3Info(pVM, "gdt", NULL, DBGFR3InfoLogRelHlp());
2039	/** @todo dump guest call stack. */
2040	#if 1 // "temporary" while debugging #1589
2041	RTLogRelPrintf("***\n");
2042	uint32_t esp = CPUMGetGuestESP(pVCpu);
2043	if ( CPUMGetGuestSS(pVCpu) == 0
2044	&& esp < _64K)
2045	{
2046	uint8_t abBuf[PAGE_SIZE];
2047	RTLogRelPrintf("***\n"
2048	"ss:sp=0000:%04x ", esp);
2049	uint32_t Start = esp & ~(uint32_t)63;
2050	int rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, Start, 0x100);
2051	if (RT_SUCCESS(rc))
2052	RTLogRelPrintf("0000:%04x TO 0000:%04x:\n"
2053	"%.*Rhxd\n",
2054	Start, Start + 0x100 - 1,
2055	0x100, abBuf);
2056	else
2057	RTLogRelPrintf("rc=%Rrc\n", rc);
2058
2059	/* grub ... */
2060	if (esp < 0x2000 && esp > 0x1fc0)
2061	{
2062	rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, 0x8000, 0x800);
2063	if (RT_SUCCESS(rc))
2064	RTLogRelPrintf("0000:8000 TO 0000:87ff:\n"
2065	"%.*Rhxd\n",
2066	0x800, abBuf);
2067	}
2068	/* microsoft cdrom hang ... */
2069	if (true)
2070	{
2071	rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, 0x8000, 0x200);
2072	if (RT_SUCCESS(rc))
2073	RTLogRelPrintf("2000:0000 TO 2000:01ff:\n"
2074	"%.*Rhxd\n",
2075	0x200, abBuf);
2076	}
2077	}
2078	#endif
2079	RTLogRelPrintf("************ End of Guest state at power off *************\n");
2080	}
2081
2082	/*
2083	* Perform the power off notifications and advance the state to
2084	* Off or OffLS.
2085	*/
2086	PDMR3PowerOff(pVM);
2087
2088	PUVM pUVM = pVM->pUVM;
2089	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2090	enmVMState = pVM->enmVMState;
2091	if (enmVMState == VMSTATE_POWERING_OFF_LS)
2092	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS);
2093	else
2094	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF);
2095	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2096	}
2097	return VINF_EM_OFF;
2098	}
2099
2100
2101	/**
2102	* Power off the VM.
2103	*
2104	* @returns VBox status code. When called on EMT, this will be a strict status
2105	* code that has to be propagated up the call stack.
2106	*
2107	* @param pVM The handle of the VM to be powered off.
2108	*
2109	* @thread Any thread.
2110	* @vmstate Suspended, Running, Guru Meditation, Load Failure
2111	* @vmstateto Off or OffLS
2112	*/
2113	VMMR3DECL(int) VMR3PowerOff(PVM pVM)
2114	{
2115	LogFlow(("VMR3PowerOff: pVM=%p\n", pVM));
2116	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2117
2118	/*
2119	* Gather all the EMTs to make sure there are no races before
2120	* changing the VM state.
2121	*/
2122	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2123	vmR3PowerOff, NULL);
2124	LogFlow(("VMR3PowerOff: returns %Rrc\n", rc));
2125	return rc;
2126	}
2127
2128
2129	/**
2130	* Destroys the VM.
2131	*
2132	* The VM must be powered off (or never really powered on) to call this
2133	* function. The VM handle is destroyed and can no longer be used up successful
2134	* return.
2135	*
2136	* @returns VBox status code.
2137	*
2138	* @param pVM The handle of the VM which should be destroyed.
2139	*
2140	* @thread EMT(0) or any none emulation thread.
2141	* @vmstate Off, Created
2142	* @vmstateto N/A
2143	*/
2144	VMMR3DECL(int) VMR3Destroy(PVM pVM)
2145	{
2146	LogFlow(("VMR3Destroy: pVM=%p\n", pVM));
2147
2148	/*
2149	* Validate input.
2150	*/
2151	if (!pVM)
2152	return VERR_INVALID_PARAMETER;
2153	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2154	Assert(VMMGetCpuId(pVM) == 0 \|\| VMMGetCpuId(pVM) == NIL_VMCPUID);
2155
2156	/*
2157	* Change VM state to destroying and unlink the VM.
2158	*/
2159	int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF);
2160	if (RT_FAILURE(rc))
2161	return rc;
2162
2163	/** @todo lock this when we start having multiple machines in a process... */
2164	PUVM pUVM = pVM->pUVM; AssertPtr(pUVM);
2165	if (g_pUVMsHead == pUVM)
2166	g_pUVMsHead = pUVM->pNext;
2167	else
2168	{
2169	PUVM pPrev = g_pUVMsHead;
2170	while (pPrev && pPrev->pNext != pUVM)
2171	pPrev = pPrev->pNext;
2172	AssertMsgReturn(pPrev, ("pUVM=%p / pVM=%p is INVALID!\n", pUVM, pVM), VERR_INVALID_PARAMETER);
2173
2174	pPrev->pNext = pUVM->pNext;
2175	}
2176	pUVM->pNext = NULL;
2177
2178	/*
2179	* Notify registered at destruction listeners.
2180	*/
2181	vmR3AtDtor(pVM);
2182
2183	/*
2184	* EMT(0) does the final cleanup, so if we're it calling VMR3Destroy then
2185	* we'll have to postpone parts of it till later. Otherwise, call
2186	* vmR3Destroy on each of the EMTs in ending with EMT(0) doing the bulk
2187	* of the cleanup.
2188	*/
2189	if (VMMGetCpuId(pVM) == 0)
2190	{
2191	pUVM->vm.s.fEMTDoesTheCleanup = true;
2192	pUVM->vm.s.fTerminateEMT = true;
2193	VM_FF_SET(pVM, VM_FF_TERMINATE);
2194
2195	/* Terminate the other EMTs. */
2196	for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++)
2197	{
2198	rc = VMR3ReqCallWaitU(pUVM, idCpu, (PFNRT)vmR3Destroy, 1, pVM);
2199	AssertLogRelRC(rc);
2200	}
2201	}
2202	else
2203	{
2204	/* vmR3Destroy on all EMTs, ending with EMT(0). */
2205	rc = VMR3ReqCallWaitU(pUVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM);
2206	AssertLogRelRC(rc);
2207
2208	/* Wait for EMTs and destroy the UVM. */
2209	vmR3DestroyUVM(pUVM, 30000);
2210	}
2211
2212	LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n"));
2213	return VINF_SUCCESS;
2214	}
2215
2216
2217	/**
2218	* Internal destruction worker.
2219	*
2220	* This is either called from VMR3Destroy via VMR3ReqCallU or from
2221	* vmR3EmulationThreadWithId when EMT(0) terminates after having called
2222	* VMR3Destroy().
2223	*
2224	* When called on EMT(0), it will performed the great bulk of the destruction.
2225	* When called on the other EMTs, they will do nothing and the whole purpose is
2226	* to return VINF_EM_TERMINATE so they break out of their run loops.
2227	*
2228	* @returns VINF_EM_TERMINATE.
2229	* @param pVM The VM handle.
2230	*/
2231	DECLCALLBACK(int) vmR3Destroy(PVM pVM)
2232	{
2233	PUVM pUVM = pVM->pUVM;
2234	PVMCPU pVCpu = VMMGetCpu(pVM);
2235	Assert(pVCpu);
2236	LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu));
2237
2238	/*
2239	* Only VCPU 0 does the full cleanup.
2240	*/
2241	if (pVCpu->idCpu == 0)
2242	{
2243
2244	/*
2245	* Dump statistics to the log.
2246	*/
2247	#if defined(VBOX_WITH_STATISTICS) \|\| defined(LOG_ENABLED)
2248	RTLogFlags(NULL, "nodisabled nobuffered");
2249	#endif
2250	#ifdef VBOX_WITH_STATISTICS
2251	STAMR3Dump(pVM, "*");
2252	#else
2253	LogRel(("*********************** Statistics ***********************\n"));
2254	STAMR3DumpToReleaseLog(pVM, "*");
2255	LogRel(("******************* End of statistics ********************\n"));
2256	#endif
2257
2258	/*
2259	* Destroy the VM components.
2260	*/
2261	int rc = TMR3Term(pVM);
2262	AssertRC(rc);
2263	#ifdef VBOX_WITH_DEBUGGER
2264	rc = DBGCTcpTerminate(pVM, pUVM->vm.s.pvDBGC);
2265	pUVM->vm.s.pvDBGC = NULL;
2266	#endif
2267	AssertRC(rc);
2268	rc = DBGFR3Term(pVM);
2269	AssertRC(rc);
2270	rc = PDMR3Term(pVM);
2271	AssertRC(rc);
2272	rc = EMR3Term(pVM);
2273	AssertRC(rc);
2274	rc = IOMR3Term(pVM);
2275	AssertRC(rc);
2276	rc = CSAMR3Term(pVM);
2277	AssertRC(rc);
2278	rc = PATMR3Term(pVM);
2279	AssertRC(rc);
2280	rc = TRPMR3Term(pVM);
2281	AssertRC(rc);
2282	rc = SELMR3Term(pVM);
2283	AssertRC(rc);
2284	rc = REMR3Term(pVM);
2285	AssertRC(rc);
2286	rc = HWACCMR3Term(pVM);
2287	AssertRC(rc);
2288	rc = PGMR3Term(pVM);
2289	AssertRC(rc);
2290	rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */
2291	AssertRC(rc);
2292	rc = CPUMR3Term(pVM);
2293	AssertRC(rc);
2294	SSMR3Term(pVM);
2295	rc = PDMR3CritSectTerm(pVM);
2296	AssertRC(rc);
2297	rc = MMR3Term(pVM);
2298	AssertRC(rc);
2299
2300	/*
2301	* We're done in this thread (EMT).
2302	*/
2303	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2304	ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_TERMINATE);
2305	LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE));
2306	}
2307	return VINF_EM_TERMINATE;
2308	}
2309
2310
2311	/**
2312	* Called at the end of the EMT procedure to take care of the final cleanup.
2313	*
2314	* Currently only EMT(0) will do work here. It will destroy the shared VM
2315	* structure if it is still around. If EMT(0) was the caller of VMR3Destroy it
2316	* will destroy UVM and nothing will be left behind upon exit. But if some
2317	* other thread is calling VMR3Destroy, they will clean up UVM after all EMTs
2318	* has exitted.
2319	*
2320	* @param pUVM The UVM handle.
2321	* @param idCpu The virtual CPU id.
2322	*/
2323	void vmR3DestroyFinalBitFromEMT(PUVM pUVM, VMCPUID idCpu)
2324	{
2325	/*
2326	* Only EMT(0) has work to do here.
2327	*/
2328	if (idCpu != 0)
2329	return;
2330	Assert( !pUVM->pVM
2331	\|\| VMMGetCpuId(pUVM->pVM) == 0);
2332
2333	/*
2334	* If we have a shared VM structure, change its state to Terminated and
2335	* tell GVMM to destroy it.
2336	*/
2337	if (pUVM->pVM)
2338	{
2339	vmR3SetState(pUVM->pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING);
2340	int rc = SUPR3CallVMMR0Ex(pUVM->pVM->pVMR0, 0 /idCpu/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL);
2341	AssertLogRelRC(rc);
2342	pUVM->pVM = NULL;
2343	}
2344
2345	/*
2346	* If EMT(0) called VMR3Destroy, then it will destroy UVM as well.
2347	*/
2348	if (pUVM->vm.s.fEMTDoesTheCleanup)
2349	vmR3DestroyUVM(pUVM, 30000);
2350	}
2351
2352
2353	/**
2354	* Destroys the UVM portion.
2355	*
2356	* This is called as the final step in the VM destruction or as the cleanup
2357	* in case of a creation failure. If EMT(0) called VMR3Destroy, meaning
2358	* VMINTUSERPERVM::fEMTDoesTheCleanup is true, it will call this as
2359	* vmR3DestroyFinalBitFromEMT completes.
2360	*
2361	* @param pVM VM Handle.
2362	* @param cMilliesEMTWait The number of milliseconds to wait for the emulation
2363	* threads.
2364	*/
2365	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait)
2366	{
2367	/*
2368	* Signal termination of each the emulation threads and
2369	* wait for them to complete.
2370	*/
2371	/* Signal them. */
2372	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2373	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
2374	{
2375	ASMAtomicUoWriteBool(&pUVM->aCpus[i].vm.s.fTerminateEMT, true);
2376	if (pUVM->pVM)
2377	VM_FF_SET(pUVM->pVM, VM_FF_TERMINATE);
2378	VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
2379	RTSemEventSignal(pUVM->aCpus[i].vm.s.EventSemWait);
2380	}
2381
2382	/* Wait for them. */
2383	uint64_t NanoTS = RTTimeNanoTS();
2384	RTTHREAD hSelf = RTThreadSelf();
2385	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2386	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
2387	{
2388	RTTHREAD hThread = pUVM->aCpus[i].vm.s.ThreadEMT;
2389	if ( hThread != NIL_RTTHREAD
2390	&& hThread != hSelf)
2391	{
2392	uint64_t cMilliesElapsed = (RTTimeNanoTS() - NanoTS) / 1000000;
2393	int rc2 = RTThreadWait(hThread,
2394	cMilliesElapsed < cMilliesEMTWait
2395	? RT_MAX(cMilliesEMTWait - cMilliesElapsed, 2000)
2396	: 2000,
2397	NULL);
2398	if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */
2399	rc2 = RTThreadWait(hThread, 1000, NULL);
2400	AssertLogRelMsgRC(rc2, ("i=%u rc=%Rrc\n", i, rc2));
2401	if (RT_SUCCESS(rc2))
2402	pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD;
2403	}
2404	}
2405
2406	/* Cleanup the semaphores. */
2407	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
2408	{
2409	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
2410	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
2411	}
2412
2413	/*
2414	* Free the event semaphores associated with the request packets.
2415	*/
2416	unsigned cReqs = 0;
2417	for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++)
2418	{
2419	PVMREQ pReq = pUVM->vm.s.apReqFree[i];
2420	pUVM->vm.s.apReqFree[i] = NULL;
2421	for (; pReq; pReq = pReq->pNext, cReqs++)
2422	{
2423	pReq->enmState = VMREQSTATE_INVALID;
2424	RTSemEventDestroy(pReq->EventSem);
2425	}
2426	}
2427	Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs);
2428
2429	/*
2430	* Kill all queued requests. (There really shouldn't be any!)
2431	*/
2432	for (unsigned i = 0; i < 10; i++)
2433	{
2434	PVMREQ pReqHead = (PVMREQ)ASMAtomicXchgPtr((void * volatile *)&pUVM->vm.s.pReqs, NULL);
2435	AssertMsg(!pReqHead, ("This isn't supposed to happen! VMR3Destroy caller has to serialize this.\n"));
2436	if (!pReqHead)
2437	break;
2438	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2439	{
2440	ASMAtomicUoWriteSize(&pReq->iStatus, VERR_INTERNAL_ERROR);
2441	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2442	RTSemEventSignal(pReq->EventSem);
2443	RTThreadSleep(2);
2444	RTSemEventDestroy(pReq->EventSem);
2445	}
2446	/* give them a chance to respond before we free the request memory. */
2447	RTThreadSleep(32);
2448	}
2449
2450	/*
2451	* Now all queued VCPU requests (again, there shouldn't be any).
2452	*/
2453	for (VMCPUID idCpu = 0; idCpu < pUVM->cCpus; idCpu++)
2454	{
2455	PUVMCPU pUVCpu = &pUVM->aCpus[idCpu];
2456
2457	for (unsigned i = 0; i < 10; i++)
2458	{
2459	PVMREQ pReqHead = (PVMREQ)ASMAtomicXchgPtr((void * volatile *)&pUVCpu->vm.s.pReqs, NULL);
2460	AssertMsg(!pReqHead, ("This isn't supposed to happen! VMR3Destroy caller has to serialize this.\n"));
2461	if (!pReqHead)
2462	break;
2463	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2464	{
2465	ASMAtomicUoWriteSize(&pReq->iStatus, VERR_INTERNAL_ERROR);
2466	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2467	RTSemEventSignal(pReq->EventSem);
2468	RTThreadSleep(2);
2469	RTSemEventDestroy(pReq->EventSem);
2470	}
2471	/* give them a chance to respond before we free the request memory. */
2472	RTThreadSleep(32);
2473	}
2474	}
2475
2476	/*
2477	* Make sure the VMMR0.r0 module and whatever else is unloaded.
2478	*/
2479	PDMR3TermUVM(pUVM);
2480
2481	/*
2482	* Terminate the support library if initialized.
2483	*/
2484	if (pUVM->vm.s.pSession)
2485	{
2486	int rc = SUPR3Term(false /fForced/);
2487	AssertRC(rc);
2488	pUVM->vm.s.pSession = NIL_RTR0PTR;
2489	}
2490
2491	/*
2492	* Destroy the MM heap and free the UVM structure.
2493	*/
2494	MMR3TermUVM(pUVM);
2495	STAMR3TermUVM(pUVM);
2496
2497	#ifdef LOG_ENABLED
2498	RTLogSetCustomPrefixCallback(NULL, NULL, NULL);
2499	#endif
2500	RTTlsFree(pUVM->vm.s.idxTLS);
2501
2502	ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX);
2503	RTMemPageFree(pUVM);
2504
2505	RTLogFlush(NULL);
2506	}
2507
2508
2509	/**
2510	* Enumerates the VMs in this process.
2511	*
2512	* @returns Pointer to the next VM.
2513	* @returns NULL when no more VMs.
2514	* @param pVMPrev The previous VM
2515	* Use NULL to start the enumeration.
2516	*/
2517	VMMR3DECL(PVM) VMR3EnumVMs(PVM pVMPrev)
2518	{
2519	/*
2520	* This is quick and dirty. It has issues with VM being
2521	* destroyed during the enumeration.
2522	*/
2523	PUVM pNext;
2524	if (pVMPrev)
2525	pNext = pVMPrev->pUVM->pNext;
2526	else
2527	pNext = g_pUVMsHead;
2528	return pNext ? pNext->pVM : NULL;
2529	}
2530
2531
2532	/**
2533	* Registers an at VM destruction callback.
2534	*
2535	* @returns VBox status code.
2536	* @param pfnAtDtor Pointer to callback.
2537	* @param pvUser User argument.
2538	*/
2539	VMMR3DECL(int) VMR3AtDtorRegister(PFNVMATDTOR pfnAtDtor, void *pvUser)
2540	{
2541	/*
2542	* Check if already registered.
2543	*/
2544	VM_ATDTOR_LOCK();
2545	PVMATDTOR pCur = g_pVMAtDtorHead;
2546	while (pCur)
2547	{
2548	if (pfnAtDtor == pCur->pfnAtDtor)
2549	{
2550	VM_ATDTOR_UNLOCK();
2551	AssertMsgFailed(("Already registered at destruction callback %p!\n", pfnAtDtor));
2552	return VERR_INVALID_PARAMETER;
2553	}
2554
2555	/* next */
2556	pCur = pCur->pNext;
2557	}
2558	VM_ATDTOR_UNLOCK();
2559
2560	/*
2561	* Allocate new entry.
2562	*/
2563	PVMATDTOR pVMAtDtor = (PVMATDTOR)RTMemAlloc(sizeof(*pVMAtDtor));
2564	if (!pVMAtDtor)
2565	return VERR_NO_MEMORY;
2566
2567	VM_ATDTOR_LOCK();
2568	pVMAtDtor->pfnAtDtor = pfnAtDtor;
2569	pVMAtDtor->pvUser = pvUser;
2570	pVMAtDtor->pNext = g_pVMAtDtorHead;
2571	g_pVMAtDtorHead = pVMAtDtor;
2572	VM_ATDTOR_UNLOCK();
2573
2574	return VINF_SUCCESS;
2575	}
2576
2577
2578	/**
2579	* Deregisters an at VM destruction callback.
2580	*
2581	* @returns VBox status code.
2582	* @param pfnAtDtor Pointer to callback.
2583	*/
2584	VMMR3DECL(int) VMR3AtDtorDeregister(PFNVMATDTOR pfnAtDtor)
2585	{
2586	/*
2587	* Find it, unlink it and free it.
2588	*/
2589	VM_ATDTOR_LOCK();
2590	PVMATDTOR pPrev = NULL;
2591	PVMATDTOR pCur = g_pVMAtDtorHead;
2592	while (pCur)
2593	{
2594	if (pfnAtDtor == pCur->pfnAtDtor)
2595	{
2596	if (pPrev)
2597	pPrev->pNext = pCur->pNext;
2598	else
2599	g_pVMAtDtorHead = pCur->pNext;
2600	pCur->pNext = NULL;
2601	VM_ATDTOR_UNLOCK();
2602
2603	RTMemFree(pCur);
2604	return VINF_SUCCESS;
2605	}
2606
2607	/* next */
2608	pPrev = pCur;
2609	pCur = pCur->pNext;
2610	}
2611	VM_ATDTOR_UNLOCK();
2612
2613	return VERR_INVALID_PARAMETER;
2614	}
2615
2616
2617	/**
2618	* Walks the list of at VM destructor callbacks.
2619	* @param pVM The VM which is about to be destroyed.
2620	*/
2621	static void vmR3AtDtor(PVM pVM)
2622	{
2623	/*
2624	* Find it, unlink it and free it.
2625	*/
2626	VM_ATDTOR_LOCK();
2627	for (PVMATDTOR pCur = g_pVMAtDtorHead; pCur; pCur = pCur->pNext)
2628	pCur->pfnAtDtor(pVM, pCur->pvUser);
2629	VM_ATDTOR_UNLOCK();
2630	}
2631
2632
2633	/**
2634	* Worker which checks integrity of some internal structures.
2635	* This is yet another attempt to track down that AVL tree crash.
2636	*/
2637	static void vmR3CheckIntegrity(PVM pVM)
2638	{
2639	#ifdef VBOX_STRICT
2640	int rc = PGMR3CheckIntegrity(pVM);
2641	AssertReleaseRC(rc);
2642	#endif
2643	}
2644
2645
2646	/**
2647	* EMT rendezvous worker for VMR3Reset.
2648	*
2649	* This is called by the emulation threads as a response to the reset request
2650	* issued by VMR3Reset().
2651	*
2652	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This
2653	* is a strict return code, see FNVMMEMTRENDEZVOUS.)
2654	*
2655	* @param pVM The VM handle.
2656	* @param pVCpu The VMCPU handle of the EMT.
2657	* @param pvUser Ignored.
2658	*/
2659	static DECLCALLBACK(VBOXSTRICTRC) vmR3Reset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2660	{
2661	Assert(!pvUser); NOREF(pvUser);
2662
2663	/*
2664	* The first EMT will try change the state to resetting. If this fails,
2665	* we won't get called for the other EMTs.
2666	*/
2667	if (pVCpu->idCpu == pVM->cCpus - 1)
2668	{
2669	int rc = vmR3TrySetState(pVM, "VMR3Reset", 3,
2670	VMSTATE_RESETTING, VMSTATE_RUNNING,
2671	VMSTATE_RESETTING, VMSTATE_SUSPENDED,
2672	VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS);
2673	if (RT_FAILURE(rc))
2674	return rc;
2675	}
2676
2677	/*
2678	* Check the state.
2679	*/
2680	VMSTATE enmVMState = VMR3GetState(pVM);
2681	AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING
2682	\|\| enmVMState == VMSTATE_RESETTING_LS,
2683	("%s\n", VMR3GetStateName(enmVMState)),
2684	VERR_INTERNAL_ERROR_4);
2685
2686	/*
2687	* EMT(0) does the full cleanup after all the other EMTs has been
2688	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2689	*
2690	* Because there are per-cpu reset routines and order may/is important,
2691	* the following sequence looks a bit ugly...
2692	*/
2693	if (pVCpu->idCpu == 0)
2694	vmR3CheckIntegrity(pVM);
2695
2696	/* Reset the VCpu state. */
2697	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2698
2699	/* Clear all pending forced actions. */
2700	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST);
2701
2702	/*
2703	* Reset the VM components.
2704	*/
2705	if (pVCpu->idCpu == 0)
2706	{
2707	PATMR3Reset(pVM);
2708	CSAMR3Reset(pVM);
2709	PGMR3Reset(pVM); /* We clear VM RAM in PGMR3Reset. It's vital PDMR3Reset is executed
2710	* _afterwards_. E.g. ACPI sets up RAM tables during init/reset. */
2711	/** @todo PGMR3Reset should be called after PDMR3Reset really, because we'll trash OS <-> hardware
2712	* communication structures residing in RAM when done in the other order. I.e. the device must be
2713	* quiesced first, then we clear the memory and plan tables. Probably have to make these things
2714	* explicit in some way, some memory setup pass or something.
2715	* (Example: DevAHCI may assert if memory is zeroed before it've read the FIS.)
2716	*
2717	* @bugref{4467}
2718	*/
2719	MMR3Reset(pVM);
2720	PDMR3Reset(pVM);
2721	SELMR3Reset(pVM);
2722	TRPMR3Reset(pVM);
2723	REMR3Reset(pVM);
2724	IOMR3Reset(pVM);
2725	CPUMR3Reset(pVM);
2726	}
2727	CPUMR3ResetCpu(pVCpu);
2728	if (pVCpu->idCpu == 0)
2729	{
2730	TMR3Reset(pVM);
2731	EMR3Reset(pVM);
2732	HWACCMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2733
2734	#ifdef LOG_ENABLED
2735	/*
2736	* Debug logging.
2737	*/
2738	RTLogPrintf("\n\nThe VM was reset:\n");
2739	DBGFR3Info(pVM, "cpum", "verbose", NULL);
2740	#endif
2741
2742	/*
2743	* Since EMT(0) is the last to go thru here, it will advance the state.
2744	* When a live save is active, we will move on to SuspendingLS but
2745	* leave it for VMR3Reset to do the actual suspending due to deadlock risks.
2746	*/
2747	PUVM pUVM = pVM->pUVM;
2748	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2749	enmVMState = pVM->enmVMState;
2750	if (enmVMState == VMSTATE_RESETTING)
2751	{
2752	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2753	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING);
2754	else
2755	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING);
2756	}
2757	else
2758	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS);
2759	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2760
2761	vmR3CheckIntegrity(pVM);
2762
2763	/*
2764	* Do the suspend bit as well.
2765	* It only requires some EMT(0) work at present.
2766	*/
2767	if (enmVMState != VMSTATE_RESETTING)
2768	{
2769	vmR3SuspendDoWork(pVM);
2770	vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
2771	}
2772	}
2773
2774	return enmVMState == VMSTATE_RESETTING
2775	? VINF_EM_RESET
2776	: 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. */
2777	}
2778
2779
2780	/**
2781	* Reset the current VM.
2782	*
2783	* @returns VBox status code.
2784	* @param pVM VM to reset.
2785	*/
2786	VMMR3DECL(int) VMR3Reset(PVM pVM)
2787	{
2788	LogFlow(("VMR3Reset:\n"));
2789	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2790
2791	/*
2792	* Gather all the EMTs to make sure there are no races before
2793	* changing the VM state.
2794	*/
2795	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2796	vmR3Reset, NULL);
2797	LogFlow(("VMR3Reset: returns %Rrc\n", rc));
2798	return rc;
2799	}
2800
2801
2802	/**
2803	* Gets the current VM state.
2804	*
2805	* @returns The current VM state.
2806	* @param pVM VM handle.
2807	* @thread Any
2808	*/
2809	VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM)
2810	{
2811	return pVM->enmVMState;
2812	}
2813
2814
2815	/**
2816	* Gets the state name string for a VM state.
2817	*
2818	* @returns Pointer to the state name. (readonly)
2819	* @param enmState The state.
2820	*/
2821	VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState)
2822	{
2823	switch (enmState)
2824	{
2825	case VMSTATE_CREATING: return "CREATING";
2826	case VMSTATE_CREATED: return "CREATED";
2827	case VMSTATE_LOADING: return "LOADING";
2828	case VMSTATE_POWERING_ON: return "POWERING_ON";
2829	case VMSTATE_RESUMING: return "RESUMING";
2830	case VMSTATE_RUNNING: return "RUNNING";
2831	case VMSTATE_RUNNING_LS: return "RUNNING_LS";
2832	case VMSTATE_RESETTING: return "RESETTING";
2833	case VMSTATE_RESETTING_LS: return "RESETTING_LS";
2834	case VMSTATE_SUSPENDED: return "SUSPENDED";
2835	case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS";
2836	case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS";
2837	case VMSTATE_SUSPENDING: return "SUSPENDING";
2838	case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS";
2839	case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS";
2840	case VMSTATE_SAVING: return "SAVING";
2841	case VMSTATE_DEBUGGING: return "DEBUGGING";
2842	case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS";
2843	case VMSTATE_POWERING_OFF: return "POWERING_OFF";
2844	case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS";
2845	case VMSTATE_FATAL_ERROR: return "FATAL_ERROR";
2846	case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS";
2847	case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION";
2848	case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS";
2849	case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE";
2850	case VMSTATE_OFF: return "OFF";
2851	case VMSTATE_OFF_LS: return "OFF_LS";
2852	case VMSTATE_DESTROYING: return "DESTROYING";
2853	case VMSTATE_TERMINATED: return "TERMINATED";
2854
2855	default:
2856	AssertMsgFailed(("Unknown state %d\n", enmState));
2857	return "Unknown!\n";
2858	}
2859	}
2860
2861
2862	/**
2863	* Validates the state transition in strict builds.
2864	*
2865	* @returns true if valid, false if not.
2866	*
2867	* @param enmStateOld The old (current) state.
2868	* @param enmStateNew The proposed new state.
2869	*
2870	* @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE
2871	* diagram (under State Machine Diagram).
2872	*/
2873	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew)
2874	{
2875	#ifdef VBOX_STRICT
2876	switch (enmStateOld)
2877	{
2878	case VMSTATE_CREATING:
2879	AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2880	break;
2881
2882	case VMSTATE_CREATED:
2883	AssertMsgReturn( enmStateNew == VMSTATE_LOADING
2884	\|\| enmStateNew == VMSTATE_POWERING_ON
2885	\|\| enmStateNew == VMSTATE_POWERING_OFF
2886	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2887	break;
2888
2889	case VMSTATE_LOADING:
2890	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2891	\|\| enmStateNew == VMSTATE_LOAD_FAILURE
2892	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2893	break;
2894
2895	case VMSTATE_POWERING_ON:
2896	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
2897	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
2898	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2899	break;
2900
2901	case VMSTATE_RESUMING:
2902	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
2903	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
2904	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2905	break;
2906
2907	case VMSTATE_RUNNING:
2908	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
2909	\|\| enmStateNew == VMSTATE_SUSPENDING
2910	\|\| enmStateNew == VMSTATE_RESETTING
2911	\|\| enmStateNew == VMSTATE_RUNNING_LS
2912	\|\| enmStateNew == VMSTATE_DEBUGGING
2913	\|\| enmStateNew == VMSTATE_FATAL_ERROR
2914	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
2915	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2916	break;
2917
2918	case VMSTATE_RUNNING_LS:
2919	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS
2920	\|\| enmStateNew == VMSTATE_SUSPENDING_LS
2921	\|\| enmStateNew == VMSTATE_SUSPENDING_EXT_LS
2922	\|\| enmStateNew == VMSTATE_RESETTING_LS
2923	\|\| enmStateNew == VMSTATE_RUNNING
2924	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
2925	\|\| enmStateNew == VMSTATE_FATAL_ERROR_LS
2926	\|\| enmStateNew == VMSTATE_GURU_MEDITATION_LS
2927	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2928	break;
2929
2930	case VMSTATE_RESETTING:
2931	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2932	break;
2933
2934	case VMSTATE_RESETTING_LS:
2935	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS
2936	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2937	break;
2938
2939	case VMSTATE_SUSPENDING:
2940	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2941	break;
2942
2943	case VMSTATE_SUSPENDING_LS:
2944	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
2945	\|\| enmStateNew == VMSTATE_SUSPENDED_LS
2946	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2947	break;
2948
2949	case VMSTATE_SUSPENDING_EXT_LS:
2950	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
2951	\|\| enmStateNew == VMSTATE_SUSPENDED_EXT_LS
2952	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2953	break;
2954
2955	case VMSTATE_SUSPENDED:
2956	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
2957	\|\| enmStateNew == VMSTATE_SAVING
2958	\|\| enmStateNew == VMSTATE_RESETTING
2959	\|\| enmStateNew == VMSTATE_RESUMING
2960	\|\| enmStateNew == VMSTATE_LOADING
2961	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2962	break;
2963
2964	case VMSTATE_SUSPENDED_LS:
2965	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2966	\|\| enmStateNew == VMSTATE_SAVING
2967	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2968	break;
2969
2970	case VMSTATE_SUSPENDED_EXT_LS:
2971	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2972	\|\| enmStateNew == VMSTATE_SAVING
2973	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2974	break;
2975
2976	case VMSTATE_SAVING:
2977	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2978	break;
2979
2980	case VMSTATE_DEBUGGING:
2981	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
2982	\|\| enmStateNew == VMSTATE_POWERING_OFF
2983	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2984	break;
2985
2986	case VMSTATE_DEBUGGING_LS:
2987	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
2988	\|\| enmStateNew == VMSTATE_RUNNING_LS
2989	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
2990	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2991	break;
2992
2993	case VMSTATE_POWERING_OFF:
2994	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2995	break;
2996
2997	case VMSTATE_POWERING_OFF_LS:
2998	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
2999	\|\| enmStateNew == VMSTATE_OFF_LS
3000	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3001	break;
3002
3003	case VMSTATE_OFF:
3004	AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3005	break;
3006
3007	case VMSTATE_OFF_LS:
3008	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3009	break;
3010
3011	case VMSTATE_FATAL_ERROR:
3012	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3013	break;
3014
3015	case VMSTATE_FATAL_ERROR_LS:
3016	AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR
3017	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3018	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3019	break;
3020
3021	case VMSTATE_GURU_MEDITATION:
3022	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
3023	\|\| enmStateNew == VMSTATE_POWERING_OFF
3024	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3025	break;
3026
3027	case VMSTATE_GURU_MEDITATION_LS:
3028	AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION
3029	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
3030	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
3031	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3032	break;
3033
3034	case VMSTATE_LOAD_FAILURE:
3035	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3036	break;
3037
3038	case VMSTATE_DESTROYING:
3039	AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3040	break;
3041
3042	case VMSTATE_TERMINATED:
3043	default:
3044	AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
3045	break;
3046	}
3047	#endif /* VBOX_STRICT */
3048	return true;
3049	}
3050
3051
3052	/**
3053	* Does the state change callouts.
3054	*
3055	* The caller owns the AtStateCritSect.
3056	*
3057	* @param pVM The VM handle.
3058	* @param pUVM The UVM handle.
3059	* @param enmStateNew The New state.
3060	* @param enmStateOld The old state.
3061	*/
3062	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3063	{
3064	LogRel(("Changing the VM state from '%s' to '%s'.\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3065
3066	for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext)
3067	{
3068	pCur->pfnAtState(pVM, enmStateNew, enmStateOld, pCur->pvUser);
3069	if ( enmStateNew != VMSTATE_DESTROYING
3070	&& pVM->enmVMState == VMSTATE_DESTROYING)
3071	break;
3072	AssertMsg(pVM->enmVMState == enmStateNew,
3073	("You are not allowed to change the state while in the change callback, except "
3074	"from destroying the VM. There are restrictions in the way the state changes "
3075	"are propagated up to the EM execution loop and it makes the program flow very "
3076	"difficult to follow. (%s, expected %s, old %s)\n",
3077	VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew),
3078	VMR3GetStateName(enmStateOld)));
3079	}
3080	}
3081
3082
3083	/**
3084	* Sets the current VM state, with the AtStatCritSect already entered.
3085	*
3086	* @param pVM The VM handle.
3087	* @param pUVM The UVM handle.
3088	* @param enmStateNew The new state.
3089	* @param enmStateOld The old state.
3090	*/
3091	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3092	{
3093	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3094
3095	AssertMsg(pVM->enmVMState == enmStateOld,
3096	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3097	pUVM->vm.s.enmPrevVMState = enmStateOld;
3098	pVM->enmVMState = enmStateNew;
3099
3100	vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld);
3101	}
3102
3103
3104	/**
3105	* Sets the current VM state.
3106	*
3107	* @param pVM VM handle.
3108	* @param enmStateNew The new state.
3109	* @param enmStateOld The old state (for asserting only).
3110	*/
3111	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3112	{
3113	PUVM pUVM = pVM->pUVM;
3114	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3115
3116	AssertMsg(pVM->enmVMState == enmStateOld,
3117	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3118	vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState);
3119
3120	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3121	}
3122
3123
3124	/**
3125	* Tries to perform a state transition.
3126	*
3127	* @returns The 1-based ordinal of the succeeding transition.
3128	* VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure.
3129	*
3130	* @param pVM The VM handle.
3131	* @param pszWho Who is trying to change it.
3132	* @param cTransitions The number of transitions in the ellipsis.
3133	* @param ... Transition pairs; new, old.
3134	*/
3135	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...)
3136	{
3137	va_list va;
3138	VMSTATE enmStateNew = VMSTATE_CREATED;
3139	VMSTATE enmStateOld = VMSTATE_CREATED;
3140
3141	#ifdef VBOX_STRICT
3142	/*
3143	* Validate the input first.
3144	*/
3145	va_start(va, cTransitions);
3146	for (unsigned i = 0; i < cTransitions; i++)
3147	{
3148	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3149	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3150	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3151	}
3152	va_end(va);
3153	#endif
3154
3155	/*
3156	* Grab the lock and see if any of the proposed transisions works out.
3157	*/
3158	va_start(va, cTransitions);
3159	int rc = VERR_VM_INVALID_VM_STATE;
3160	PUVM pUVM = pVM->pUVM;
3161	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3162
3163	VMSTATE enmStateCur = pVM->enmVMState;
3164
3165	for (unsigned i = 0; i < cTransitions; i++)
3166	{
3167	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3168	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3169	if (enmStateCur == enmStateOld)
3170	{
3171	vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld);
3172	rc = i + 1;
3173	break;
3174	}
3175	}
3176
3177	if (RT_FAILURE(rc))
3178	{
3179	/*
3180	* Complain about it.
3181	*/
3182	if (cTransitions == 1)
3183	LogRel(("%s: %s -> %s failed, because the VM state is actually %s\n",
3184	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur)));
3185	else
3186	{
3187	va_end(va);
3188	va_start(va, cTransitions);
3189	LogRel(("%s:\n", pszWho));
3190	for (unsigned i = 0; i < cTransitions; i++)
3191	{
3192	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3193	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3194	LogRel(("%s%s -> %s",
3195	i ? ", " : " ", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3196	}
3197	LogRel((" failed, because the VM state is actually %s\n", VMR3GetStateName(enmStateCur)));
3198	}
3199
3200	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3201	N_("%s failed because the VM state is %s instead of %s"),
3202	VMR3GetStateName(enmStateCur), VMR3GetStateName(enmStateOld));
3203	AssertMsgFailed(("%s: %s -> %s failed, state is actually %s\n",
3204	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur)));
3205	}
3206
3207	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3208	va_end(va);
3209	Assert(rc > 0 \|\| rc < 0);
3210	return rc;
3211	}
3212
3213
3214	/**
3215	* Flag a guru meditation ... a hack.
3216	*
3217	* @param pVM The VM handle
3218	*
3219	* @todo Rewrite this part. The guru meditation should be flagged
3220	* immediately by the VMM and not by VMEmt.cpp when it's all over.
3221	*/
3222	void vmR3SetGuruMeditation(PVM pVM)
3223	{
3224	PUVM pUVM = pVM->pUVM;
3225	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3226
3227	VMSTATE enmStateCur = pVM->enmVMState;
3228	if (enmStateCur == VMSTATE_RUNNING)
3229	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING);
3230	else if (enmStateCur == VMSTATE_RUNNING_LS)
3231	{
3232	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS);
3233	SSMR3Cancel(pVM);
3234	}
3235
3236	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3237	}
3238
3239
3240	/**
3241	* Checks if the VM was teleported and hasn't been fully resumed yet.
3242	*
3243	* This applies to both sides of the teleportation since we may leave a working
3244	* clone behind and the user is allowed to resume this...
3245	*
3246	* @returns true / false.
3247	* @param pVM The VM handle.
3248	* @thread Any thread.
3249	*/
3250	VMMR3DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM)
3251	{
3252	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
3253	return pVM->vm.s.fTeleportedAndNotFullyResumedYet;
3254	}
3255
3256
3257	/**
3258	* Registers a VM state change callback.
3259	*
3260	* You are not allowed to call any function which changes the VM state from a
3261	* state callback, except VMR3Destroy().
3262	*
3263	* @returns VBox status code.
3264	* @param pVM VM handle.
3265	* @param pfnAtState Pointer to callback.
3266	* @param pvUser User argument.
3267	* @thread Any.
3268	*/
3269	VMMR3DECL(int) VMR3AtStateRegister(PVM pVM, PFNVMATSTATE pfnAtState, void *pvUser)
3270	{
3271	LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3272
3273	/*
3274	* Validate input.
3275	*/
3276	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3277	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3278
3279	/*
3280	* Allocate a new record.
3281	*/
3282	PUVM pUVM = pVM->pUVM;
3283	PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3284	if (!pNew)
3285	return VERR_NO_MEMORY;
3286
3287	/* fill */
3288	pNew->pfnAtState = pfnAtState;
3289	pNew->pvUser = pvUser;
3290
3291	/* insert */
3292	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3293	pNew->pNext = *pUVM->vm.s.ppAtStateNext;
3294	*pUVM->vm.s.ppAtStateNext = pNew;
3295	pUVM->vm.s.ppAtStateNext = &pNew->pNext;
3296	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3297
3298	return VINF_SUCCESS;
3299	}
3300
3301
3302	/**
3303	* Deregisters a VM state change callback.
3304	*
3305	* @returns VBox status code.
3306	* @param pVM VM handle.
3307	* @param pfnAtState Pointer to callback.
3308	* @param pvUser User argument.
3309	* @thread Any.
3310	*/
3311	VMMR3DECL(int) VMR3AtStateDeregister(PVM pVM, PFNVMATSTATE pfnAtState, void *pvUser)
3312	{
3313	LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3314
3315	/*
3316	* Validate input.
3317	*/
3318	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3319	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3320
3321	PUVM pUVM = pVM->pUVM;
3322	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3323
3324	/*
3325	* Search the list for the entry.
3326	*/
3327	PVMATSTATE pPrev = NULL;
3328	PVMATSTATE pCur = pUVM->vm.s.pAtState;
3329	while ( pCur
3330	&& ( pCur->pfnAtState != pfnAtState
3331	\|\| pCur->pvUser != pvUser))
3332	{
3333	pPrev = pCur;
3334	pCur = pCur->pNext;
3335	}
3336	if (!pCur)
3337	{
3338	AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState));
3339	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3340	return VERR_FILE_NOT_FOUND;
3341	}
3342
3343	/*
3344	* Unlink it.
3345	*/
3346	if (pPrev)
3347	{
3348	pPrev->pNext = pCur->pNext;
3349	if (!pCur->pNext)
3350	pUVM->vm.s.ppAtStateNext = &pPrev->pNext;
3351	}
3352	else
3353	{
3354	pUVM->vm.s.pAtState = pCur->pNext;
3355	if (!pCur->pNext)
3356	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
3357	}
3358
3359	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3360
3361	/*
3362	* Free it.
3363	*/
3364	pCur->pfnAtState = NULL;
3365	pCur->pNext = NULL;
3366	MMR3HeapFree(pCur);
3367
3368	return VINF_SUCCESS;
3369	}
3370
3371
3372	/**
3373	* Registers a VM error callback.
3374	*
3375	* @returns VBox status code.
3376	* @param pVM The VM handle.
3377	* @param pfnAtError Pointer to callback.
3378	* @param pvUser User argument.
3379	* @thread Any.
3380	*/
3381	VMMR3DECL(int) VMR3AtErrorRegister(PVM pVM, PFNVMATERROR pfnAtError, void *pvUser)
3382	{
3383	return VMR3AtErrorRegisterU(pVM->pUVM, pfnAtError, pvUser);
3384	}
3385
3386
3387	/**
3388	* Registers a VM error callback.
3389	*
3390	* @returns VBox status code.
3391	* @param pUVM The VM handle.
3392	* @param pfnAtError Pointer to callback.
3393	* @param pvUser User argument.
3394	* @thread Any.
3395	*/
3396	VMMR3DECL(int) VMR3AtErrorRegisterU(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3397	{
3398	LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3399
3400	/*
3401	* Validate input.
3402	*/
3403	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3404	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3405
3406	/*
3407	* Allocate a new record.
3408	*/
3409	PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3410	if (!pNew)
3411	return VERR_NO_MEMORY;
3412
3413	/* fill */
3414	pNew->pfnAtError = pfnAtError;
3415	pNew->pvUser = pvUser;
3416
3417	/* insert */
3418	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3419	pNew->pNext = *pUVM->vm.s.ppAtErrorNext;
3420	*pUVM->vm.s.ppAtErrorNext = pNew;
3421	pUVM->vm.s.ppAtErrorNext = &pNew->pNext;
3422	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3423
3424	return VINF_SUCCESS;
3425	}
3426
3427
3428	/**
3429	* Deregisters a VM error callback.
3430	*
3431	* @returns VBox status code.
3432	* @param pVM The VM handle.
3433	* @param pfnAtError Pointer to callback.
3434	* @param pvUser User argument.
3435	* @thread Any.
3436	*/
3437	VMMR3DECL(int) VMR3AtErrorDeregister(PVM pVM, PFNVMATERROR pfnAtError, void *pvUser)
3438	{
3439	LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3440
3441	/*
3442	* Validate input.
3443	*/
3444	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3445	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3446
3447	PUVM pUVM = pVM->pUVM;
3448	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3449
3450	/*
3451	* Search the list for the entry.
3452	*/
3453	PVMATERROR pPrev = NULL;
3454	PVMATERROR pCur = pUVM->vm.s.pAtError;
3455	while ( pCur
3456	&& ( pCur->pfnAtError != pfnAtError
3457	\|\| pCur->pvUser != pvUser))
3458	{
3459	pPrev = pCur;
3460	pCur = pCur->pNext;
3461	}
3462	if (!pCur)
3463	{
3464	AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError));
3465	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3466	return VERR_FILE_NOT_FOUND;
3467	}
3468
3469	/*
3470	* Unlink it.
3471	*/
3472	if (pPrev)
3473	{
3474	pPrev->pNext = pCur->pNext;
3475	if (!pCur->pNext)
3476	pUVM->vm.s.ppAtErrorNext = &pPrev->pNext;
3477	}
3478	else
3479	{
3480	pUVM->vm.s.pAtError = pCur->pNext;
3481	if (!pCur->pNext)
3482	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
3483	}
3484
3485	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3486
3487	/*
3488	* Free it.
3489	*/
3490	pCur->pfnAtError = NULL;
3491	pCur->pNext = NULL;
3492	MMR3HeapFree(pCur);
3493
3494	return VINF_SUCCESS;
3495	}
3496
3497
3498	/**
3499	* Ellipsis to va_list wrapper for calling pfnAtError.
3500	*/
3501	static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3502	{
3503	va_list va;
3504	va_start(va, pszFormat);
3505	pCur->pfnAtError(pVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va);
3506	va_end(va);
3507	}
3508
3509
3510	/**
3511	* This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV.
3512	* The message is found in VMINT.
3513	*
3514	* @param pVM The VM handle.
3515	* @thread EMT.
3516	*/
3517	VMMR3DECL(void) VMR3SetErrorWorker(PVM pVM)
3518	{
3519	VM_ASSERT_EMT(pVM);
3520	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Contrats!\n"));
3521
3522	/*
3523	* Unpack the error (if we managed to format one).
3524	*/
3525	PVMERROR pErr = pVM->vm.s.pErrorR3;
3526	const char *pszFile = NULL;
3527	const char *pszFunction = NULL;
3528	uint32_t iLine = 0;
3529	const char *pszMessage;
3530	int32_t rc = VERR_MM_HYPER_NO_MEMORY;
3531	if (pErr)
3532	{
3533	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3534	if (pErr->offFile)
3535	pszFile = (const char *)pErr + pErr->offFile;
3536	iLine = pErr->iLine;
3537	if (pErr->offFunction)
3538	pszFunction = (const char *)pErr + pErr->offFunction;
3539	if (pErr->offMessage)
3540	pszMessage = (const char *)pErr + pErr->offMessage;
3541	else
3542	pszMessage = "No message!";
3543	}
3544	else
3545	pszMessage = "No message! (Failed to allocate memory to put the error message in!)";
3546
3547	/*
3548	* Call the at error callbacks.
3549	*/
3550	PUVM pUVM = pVM->pUVM;
3551	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3552	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3553	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3554	vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage);
3555	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3556	}
3557
3558
3559	/**
3560	* Gets the number of errors raised via VMSetError.
3561	*
3562	* This can be used avoid double error messages.
3563	*
3564	* @returns The error count.
3565	* @param pVM The VM handle.
3566	*/
3567	VMMR3DECL(uint32_t) VMR3GetErrorCount(PVM pVM)
3568	{
3569	return pVM->pUVM->vm.s.cErrors;
3570	}
3571
3572
3573	/**
3574	* Creation time wrapper for vmR3SetErrorUV.
3575	*
3576	* @returns rc.
3577	* @param pUVM Pointer to the user mode VM structure.
3578	* @param rc The VBox status code.
3579	* @param RT_SRC_POS_DECL The source position of this error.
3580	* @param pszFormat Format string.
3581	* @param ... The arguments.
3582	* @thread Any thread.
3583	*/
3584	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3585	{
3586	va_list va;
3587	va_start(va, pszFormat);
3588	vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va);
3589	va_end(va);
3590	return rc;
3591	}
3592
3593
3594	/**
3595	* Worker which calls everyone listening to the VM error messages.
3596	*
3597	* @param pUVM Pointer to the user mode VM structure.
3598	* @param rc The VBox status code.
3599	* @param RT_SRC_POS_DECL The source position of this error.
3600	* @param pszFormat Format string.
3601	* @param pArgs Pointer to the format arguments.
3602	* @thread EMT
3603	*/
3604	DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char pszFormat, va_list pArgs)
3605	{
3606	/*
3607	* Log the error.
3608	*/
3609	va_list va3;
3610	va_copy(va3, *pArgs);
3611	RTLogRelPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3612	"VMSetError: %N\n",
3613	pszFile, iLine, pszFunction, rc,
3614	pszFormat, &va3);
3615	va_end(va3);
3616
3617	#ifdef LOG_ENABLED
3618	va_copy(va3, *pArgs);
3619	RTLogPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3620	"%N\n",
3621	pszFile, iLine, pszFunction, rc,
3622	pszFormat, &va3);
3623	va_end(va3);
3624	#endif
3625
3626	/*
3627	* Make a copy of the message.
3628	*/
3629	if (pUVM->pVM)
3630	vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs);
3631
3632	/*
3633	* Call the at error callbacks.
3634	*/
3635	bool fCalledSomeone = false;
3636	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3637	ASMAtomicIncU32(&pUVM->vm.s.cErrors);
3638	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3639	{
3640	va_list va2;
3641	va_copy(va2, *pArgs);
3642	pCur->pfnAtError(pUVM->pVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2);
3643	va_end(va2);
3644	fCalledSomeone = true;
3645	}
3646	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3647	}
3648
3649
3650	/**
3651	* Registers a VM runtime error callback.
3652	*
3653	* @returns VBox status code.
3654	* @param pVM The VM handle.
3655	* @param pfnAtRuntimeError Pointer to callback.
3656	* @param pvUser User argument.
3657	* @thread Any.
3658	*/
3659	VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PVM pVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3660	{
3661	LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3662
3663	/*
3664	* Validate input.
3665	*/
3666	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3667	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3668
3669	/*
3670	* Allocate a new record.
3671	*/
3672	PUVM pUVM = pVM->pUVM;
3673	PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3674	if (!pNew)
3675	return VERR_NO_MEMORY;
3676
3677	/* fill */
3678	pNew->pfnAtRuntimeError = pfnAtRuntimeError;
3679	pNew->pvUser = pvUser;
3680
3681	/* insert */
3682	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3683	pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext;
3684	*pUVM->vm.s.ppAtRuntimeErrorNext = pNew;
3685	pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext;
3686	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3687
3688	return VINF_SUCCESS;
3689	}
3690
3691
3692	/**
3693	* Deregisters a VM runtime error callback.
3694	*
3695	* @returns VBox status code.
3696	* @param pVM The VM handle.
3697	* @param pfnAtRuntimeError Pointer to callback.
3698	* @param pvUser User argument.
3699	* @thread Any.
3700	*/
3701	VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PVM pVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3702	{
3703	LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3704
3705	/*
3706	* Validate input.
3707	*/
3708	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3709	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3710
3711	PUVM pUVM = pVM->pUVM;
3712	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3713
3714	/*
3715	* Search the list for the entry.
3716	*/
3717	PVMATRUNTIMEERROR pPrev = NULL;
3718	PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError;
3719	while ( pCur
3720	&& ( pCur->pfnAtRuntimeError != pfnAtRuntimeError
3721	\|\| pCur->pvUser != pvUser))
3722	{
3723	pPrev = pCur;
3724	pCur = pCur->pNext;
3725	}
3726	if (!pCur)
3727	{
3728	AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError));
3729	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3730	return VERR_FILE_NOT_FOUND;
3731	}
3732
3733	/*
3734	* Unlink it.
3735	*/
3736	if (pPrev)
3737	{
3738	pPrev->pNext = pCur->pNext;
3739	if (!pCur->pNext)
3740	pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext;
3741	}
3742	else
3743	{
3744	pUVM->vm.s.pAtRuntimeError = pCur->pNext;
3745	if (!pCur->pNext)
3746	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
3747	}
3748
3749	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3750
3751	/*
3752	* Free it.
3753	*/
3754	pCur->pfnAtRuntimeError = NULL;
3755	pCur->pNext = NULL;
3756	MMR3HeapFree(pCur);
3757
3758	return VINF_SUCCESS;
3759	}
3760
3761
3762	/**
3763	* EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change
3764	* the state to FatalError(LS).
3765	*
3766	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
3767	* code, see FNVMMEMTRENDEZVOUS.)
3768	*
3769	* @param pVM The VM handle.
3770	* @param pVCpu The VMCPU handle of the EMT.
3771	* @param pvUser Ignored.
3772	*/
3773	static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser)
3774	{
3775	NOREF(pVCpu);
3776	Assert(!pvUser); NOREF(pvUser);
3777
3778	int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2,
3779	VMSTATE_FATAL_ERROR, VMSTATE_RUNNING,
3780	VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS);
3781	if (rc == 2)
3782	SSMR3Cancel(pVM);
3783	return RT_SUCCESS(rc) ? VINF_SUCCESS : rc;
3784	}
3785
3786
3787	/**
3788	* Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV.
3789	*
3790	* This does the common parts after the error has been saved / retrieved.
3791	*
3792	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
3793	*
3794	* @param pVM The VM handle.
3795	* @param fFlags The error flags.
3796	* @param pszErrorId Error ID string.
3797	* @param pszFormat Format string.
3798	* @param pVa Pointer to the format arguments.
3799	*/
3800	static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
3801	{
3802	LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags));
3803
3804	/*
3805	* Take actions before the call.
3806	*/
3807	int rc;
3808	if (fFlags & VMSETRTERR_FLAGS_FATAL)
3809	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3SetRuntimeErrorChangeState, NULL);
3810	else if (fFlags & VMSETRTERR_FLAGS_SUSPEND)
3811	rc = VMR3Suspend(pVM);
3812	else
3813	rc = VINF_SUCCESS;
3814
3815	/*
3816	* Do the callback round.
3817	*/
3818	PUVM pUVM = pVM->pUVM;
3819	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3820	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3821	for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext)
3822	{
3823	va_list va;
3824	va_copy(va, *pVa);
3825	pCur->pfnAtRuntimeError(pVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va);
3826	va_end(va);
3827	}
3828	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3829
3830	return rc;
3831	}
3832
3833
3834	/**
3835	* Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon.
3836	*/
3837	static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
3838	{
3839	va_list va;
3840	va_start(va, pszFormat);
3841	int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va);
3842	va_end(va);
3843	return rc;
3844	}
3845
3846
3847	/**
3848	* This is a worker function for RC and Ring-0 calls to VMSetError and
3849	* VMSetErrorV.
3850	*
3851	* The message is found in VMINT.
3852	*
3853	* @returns VBox status code, see VMSetRuntimeError.
3854	* @param pVM The VM handle.
3855	* @thread EMT.
3856	*/
3857	VMMR3DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM)
3858	{
3859	VM_ASSERT_EMT(pVM);
3860	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n"));
3861
3862	/*
3863	* Unpack the error (if we managed to format one).
3864	*/
3865	const char *pszErrorId = "SetRuntimeError";
3866	const char *pszMessage = "No message!";
3867	uint32_t fFlags = VMSETRTERR_FLAGS_FATAL;
3868	PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3;
3869	if (pErr)
3870	{
3871	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3872	if (pErr->offErrorId)
3873	pszErrorId = (const char *)pErr + pErr->offErrorId;
3874	if (pErr->offMessage)
3875	pszMessage = (const char *)pErr + pErr->offMessage;
3876	fFlags = pErr->fFlags;
3877	}
3878
3879	/*
3880	* Join cause with vmR3SetRuntimeErrorV.
3881	*/
3882	return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
3883	}
3884
3885
3886	/**
3887	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
3888	*
3889	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
3890	*
3891	* @param pVM The VM handle.
3892	* @param fFlags The error flags.
3893	* @param pszErrorId Error ID string.
3894	* @param pszMessage The error message residing the MM heap.
3895	*
3896	* @thread EMT
3897	*/
3898	DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char pszErrorId, char pszMessage)
3899	{
3900	#if 0 /** @todo make copy of the error msg. */
3901	/*
3902	* Make a copy of the message.
3903	*/
3904	va_list va2;
3905	va_copy(va2, *pVa);
3906	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
3907	va_end(va2);
3908	#endif
3909
3910	/*
3911	* Join paths with VMR3SetRuntimeErrorWorker.
3912	*/
3913	int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
3914	MMR3HeapFree(pszMessage);
3915	return rc;
3916	}
3917
3918
3919	/**
3920	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
3921	*
3922	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
3923	*
3924	* @param pVM The VM handle.
3925	* @param fFlags The error flags.
3926	* @param pszErrorId Error ID string.
3927	* @param pszFormat Format string.
3928	* @param pVa Pointer to the format arguments.
3929	*
3930	* @thread EMT
3931	*/
3932	DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
3933	{
3934	/*
3935	* Make a copy of the message.
3936	*/
3937	va_list va2;
3938	va_copy(va2, *pVa);
3939	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
3940	va_end(va2);
3941
3942	/*
3943	* Join paths with VMR3SetRuntimeErrorWorker.
3944	*/
3945	return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa);
3946	}
3947
3948
3949	/**
3950	* Gets the number of runtime errors raised via VMR3SetRuntimeError.
3951	*
3952	* This can be used avoid double error messages.
3953	*
3954	* @returns The runtime error count.
3955	* @param pVM The VM handle.
3956	*/
3957	VMMR3DECL(uint32_t) VMR3GetRuntimeErrorCount(PVM pVM)
3958	{
3959	return pVM->pUVM->vm.s.cRuntimeErrors;
3960	}
3961
3962
3963	/**
3964	* Gets the ID virtual of the virtual CPU assoicated with the calling thread.
3965	*
3966	* @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT.
3967	*
3968	* @param pVM The VM handle.
3969	*/
3970	VMMR3DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM)
3971	{
3972	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
3973	return pUVCpu
3974	? pUVCpu->idCpu
3975	: NIL_VMCPUID;
3976	}
3977
3978
3979	/**
3980	* Returns the native handle of the current EMT VMCPU thread.
3981	*
3982	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
3983	* @param pVM The VM handle.
3984	* @thread EMT
3985	*/
3986	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM)
3987	{
3988	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
3989
3990	if (!pUVCpu)
3991	return NIL_RTNATIVETHREAD;
3992
3993	return pUVCpu->vm.s.NativeThreadEMT;
3994	}
3995
3996
3997	/**
3998	* Returns the native handle of the current EMT VMCPU thread.
3999	*
4000	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4001	* @param pVM The VM handle.
4002	* @thread EMT
4003	*/
4004	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM)
4005	{
4006	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4007
4008	if (!pUVCpu)
4009	return NIL_RTNATIVETHREAD;
4010
4011	return pUVCpu->vm.s.NativeThreadEMT;
4012	}
4013
4014
4015	/**
4016	* Returns the handle of the current EMT VMCPU thread.
4017	*
4018	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4019	* @param pVM The VM handle.
4020	* @thread EMT
4021	*/
4022	VMMR3DECL(RTTHREAD) VMR3GetVMCPUThread(PVM pVM)
4023	{
4024	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
4025
4026	if (!pUVCpu)
4027	return NIL_RTTHREAD;
4028
4029	return pUVCpu->vm.s.ThreadEMT;
4030	}
4031
4032
4033	/**
4034	* Returns the handle of the current EMT VMCPU thread.
4035	*
4036	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
4037	* @param pVM The VM handle.
4038	* @thread EMT
4039	*/
4040	VMMR3DECL(RTTHREAD) VMR3GetVMCPUThreadU(PUVM pUVM)
4041	{
4042	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4043
4044	if (!pUVCpu)
4045	return NIL_RTTHREAD;
4046
4047	return pUVCpu->vm.s.ThreadEMT;
4048	}
4049
4050
4051	/**
4052	* Return the package and core id of a CPU.
4053	*
4054	* @returns VBOX status code.
4055	* @param pVM The VM to operate on.
4056	* @param idCpu Virtual CPU to get the ID from.
4057	* @param pidCpuCore Where to store the core ID of the virtual CPU.
4058	* @param pidCpuPackage Where to store the package ID of the virtual CPU.
4059	*
4060	*/
4061	VMMR3DECL(int) VMR3GetCpuCoreAndPackageIdFromCpuId(PVM pVM, VMCPUID idCpu, uint32_t pidCpuCore, uint32_t pidCpuPackage)
4062	{
4063	if (idCpu >= pVM->cCpus)
4064	return VERR_INVALID_CPU_ID;
4065
4066	#ifdef VBOX_WITH_MULTI_CORE
4067	*pidCpuCore = idCpu;
4068	*pidCpuPackage = 0;
4069	#else
4070	*pidCpuCore = 0;
4071	*pidCpuPackage = idCpu;
4072	#endif
4073
4074	return VINF_SUCCESS;
4075	}
4076
4077
4078	/**
4079	* Worker for VMR3HotUnplugCpu.
4080	*
4081	* @returns VINF_EM_WAIT_SPIP (strict status code).
4082	* @param pVM The VM handle.
4083	* @param idCpu The current CPU.
4084	*/
4085	static DECLCALLBACK(int) vmR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4086	{
4087	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
4088	VMCPU_ASSERT_EMT(pVCpu);
4089
4090	/*
4091	* Reset per CPU resources.
4092	*
4093	* Actually only needed for VT-x because the CPU seems to be still in some
4094	* paged mode and startup fails after a new hot plug event. SVM works fine
4095	* even without this.
4096	*/
4097	Log(("vmR3HotUnplugCpu for VCPU %u\n", idCpu));
4098	PGMR3ResetUnpluggedCpu(pVM, pVCpu);
4099	PDMR3ResetCpu(pVCpu);
4100	TRPMR3ResetCpu(pVCpu);
4101	CPUMR3ResetCpu(pVCpu);
4102	EMR3ResetCpu(pVCpu);
4103	HWACCMR3ResetCpu(pVCpu);
4104	return VINF_EM_WAIT_SIPI;
4105	}
4106
4107
4108	/**
4109	* Hot-unplugs a CPU from the guest.
4110	*
4111	* @returns VBox status code.
4112	* @param pVM The VM to operate on.
4113	* @param idCpu Virtual CPU to perform the hot unplugging operation on.
4114	*/
4115	VMMR3DECL(int) VMR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4116	{
4117	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4118
4119	/** @todo r=bird: Don't destroy the EMT, it'll break VMMR3EmtRendezvous and
4120	* broadcast requests. Just note down somewhere that the CPU is
4121	* offline and send it to SPIP wait. Maybe modify VMCPUSTATE and push
4122	* it out of the EM loops when offline. */
4123	return VMR3ReqCallNoWaitU(pVM->pUVM, idCpu, (PFNRT)vmR3HotUnplugCpu, 2, pVM, idCpu);
4124	}
4125
4126
4127	/**
4128	* Hot-plugs a CPU on the guest.
4129	*
4130	* @returns VBox status code.
4131	* @param pVM The VM to operate on.
4132	* @param idCpu Virtual CPU to perform the hot plugging operation on.
4133	*/
4134	VMMR3DECL(int) VMR3HotPlugCpu(PVM pVM, VMCPUID idCpu)
4135	{
4136	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4137
4138	/** @todo r-bird: Just mark it online and make sure it waits on SPIP. */
4139	return VINF_SUCCESS;
4140	}
4141

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source: vbox/trunk/src/VBox/VMM/VM.cpp@ 26616

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