VM.cpp@ 31326

Last change on this file since 31326 was 31326, checked in by vboxsync, 14 years ago
Pass on cpu priority property.
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 142.5 KB

Line
1	/* $Id: VM.cpp 31326 2010-08-03 09:56:22Z vboxsync $ */
2	/** @file
3	* VM - Virtual Machine
4	*/
5
6	/*
7	* Copyright (C) 2006-2010 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/** @page pg_vm VM API
19	*
20	* This is the encapsulating bit. It provides the APIs that Main and VBoxBFE
21	* use to create a VMM instance for running a guest in. It also provides
22	* facilities for queuing request for execution in EMT (serialization purposes
23	* mostly) and for reporting error back to the VMM user (Main/VBoxBFE).
24	*
25	*
26	* @section sec_vm_design Design Critique / Things To Do
27	*
28	* In hindsight this component is a big design mistake, all this stuff really
29	* belongs in the VMM component. It just seemed like a kind of ok idea at a
30	* time when the VMM bit was a kind of vague. 'VM' also happend to be the name
31	* of the per-VM instance structure (see vm.h), so it kind of made sense.
32	* However as it turned out, VMM(.cpp) is almost empty all it provides in ring-3
33	* is some minor functionally and some "routing" services.
34	*
35	* Fixing this is just a matter of some more or less straight forward
36	* refactoring, the question is just when someone will get to it. Moving the EMT
37	* would be a good start.
38	*
39	*/
40
41	/*******************************************************************************
42	* Header Files *
43	*******************************************************************************/
44	#define LOG_GROUP LOG_GROUP_VM
45	#include <VBox/cfgm.h>
46	#include <VBox/vmm.h>
47	#include <VBox/gvmm.h>
48	#include <VBox/mm.h>
49	#include <VBox/cpum.h>
50	#include <VBox/selm.h>
51	#include <VBox/trpm.h>
52	#include <VBox/dbgf.h>
53	#include <VBox/pgm.h>
54	#include <VBox/pdmapi.h>
55	#include <VBox/pdmcritsect.h>
56	#include <VBox/em.h>
57	#include <VBox/rem.h>
58	#include <VBox/tm.h>
59	#include <VBox/stam.h>
60	#include <VBox/patm.h>
61	#include <VBox/csam.h>
62	#include <VBox/iom.h>
63	#include <VBox/ssm.h>
64	#include <VBox/hwaccm.h>
65	#include "VMInternal.h"
66	#include <VBox/vm.h>
67	#include <VBox/uvm.h>
68
69	#include <VBox/sup.h>
70	#include <VBox/dbg.h>
71	#include <VBox/err.h>
72	#include <VBox/param.h>
73	#include <VBox/log.h>
74	#include <iprt/assert.h>
75	#include <iprt/alloc.h>
76	#include <iprt/asm.h>
77	#include <iprt/env.h>
78	#include <iprt/string.h>
79	#include <iprt/time.h>
80	#include <iprt/semaphore.h>
81	#include <iprt/thread.h>
82
83
84	/*******************************************************************************
85	* Structures and Typedefs *
86	*******************************************************************************/
87	/**
88	* VM destruction callback registration record.
89	*/
90	typedef struct VMATDTOR
91	{
92	/** Pointer to the next record in the list. */
93	struct VMATDTOR *pNext;
94	/** Pointer to the callback function. */
95	PFNVMATDTOR pfnAtDtor;
96	/** The user argument. */
97	void *pvUser;
98	} VMATDTOR;
99	/** Pointer to a VM destruction callback registration record. */
100	typedef VMATDTOR *PVMATDTOR;
101
102
103	/*******************************************************************************
104	* Global Variables *
105	*******************************************************************************/
106	/** Pointer to the list of VMs. */
107	static PUVM g_pUVMsHead = NULL;
108
109	/** Pointer to the list of at VM destruction callbacks. */
110	static PVMATDTOR g_pVMAtDtorHead = NULL;
111	/** Lock the g_pVMAtDtorHead list. */
112	#define VM_ATDTOR_LOCK() do { } while (0)
113	/** Unlock the g_pVMAtDtorHead list. */
114	#define VM_ATDTOR_UNLOCK() do { } while (0)
115
116
117	/*******************************************************************************
118	* Internal Functions *
119	*******************************************************************************/
120	static int vmR3CreateUVM(uint32_t cCpus, PUVM *ppUVM);
121	static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM);
122	static int vmR3InitRing3(PVM pVM, PUVM pUVM);
123	static int vmR3InitVMCpu(PVM pVM);
124	static int vmR3InitRing0(PVM pVM);
125	static int vmR3InitGC(PVM pVM);
126	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat);
127	static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser);
128	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait);
129	static void vmR3AtDtor(PVM pVM);
130	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew);
131	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
132	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...);
133	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
134	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld);
135	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...);
136
137
138	/**
139	* Do global VMM init.
140	*
141	* @returns VBox status code.
142	*/
143	VMMR3DECL(int) VMR3GlobalInit(void)
144	{
145	/*
146	* Only once.
147	*/
148	static bool volatile s_fDone = false;
149	if (s_fDone)
150	return VINF_SUCCESS;
151
152	/*
153	* We're done.
154	*/
155	s_fDone = true;
156	return VINF_SUCCESS;
157	}
158
159
160
161	/**
162	* Creates a virtual machine by calling the supplied configuration constructor.
163	*
164	* On successful returned the VM is powered, i.e. VMR3PowerOn() should be
165	* called to start the execution.
166	*
167	* @returns 0 on success.
168	* @returns VBox error code on failure.
169	* @param cCpus Number of virtual CPUs for the new VM.
170	* @param pfnVMAtError Pointer to callback function for setting VM
171	* errors. This was added as an implicit call to
172	* VMR3AtErrorRegister() since there is no way the
173	* caller can get to the VM handle early enough to
174	* do this on its own.
175	* This is called in the context of an EMT.
176	* @param pvUserVM The user argument passed to pfnVMAtError.
177	* @param pfnCFGMConstructor Pointer to callback function for constructing the VM configuration tree.
178	* This is called in the context of an EMT0.
179	* @param pvUserCFGM The user argument passed to pfnCFGMConstructor.
180	* @param ppVM Where to store the 'handle' of the created VM.
181	*/
182	VMMR3DECL(int) VMR3Create(uint32_t cCpus, PFNVMATERROR pfnVMAtError, void pvUserVM, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void pvUserCFGM, PVM *ppVM)
183	{
184	LogFlow(("VMR3Create: cCpus=%RU32 pfnVMAtError=%p pvUserVM=%p pfnCFGMConstructor=%p pvUserCFGM=%p ppVM=%p\n",
185	cCpus, pfnVMAtError, pvUserVM, pfnCFGMConstructor, pvUserCFGM, ppVM));
186
187	/*
188	* Because of the current hackiness of the applications
189	* we'll have to initialize global stuff from here.
190	* Later the applications will take care of this in a proper way.
191	*/
192	static bool fGlobalInitDone = false;
193	if (!fGlobalInitDone)
194	{
195	int rc = VMR3GlobalInit();
196	if (RT_FAILURE(rc))
197	return rc;
198	fGlobalInitDone = true;
199	}
200
201	/*
202	* Validate input.
203	*/
204	AssertLogRelMsgReturn(cCpus > 0 && cCpus <= VMM_MAX_CPU_COUNT, ("%RU32\n", cCpus), VERR_TOO_MANY_CPUS);
205
206	/*
207	* Create the UVM so we can register the at-error callback
208	* and consoliate a bit of cleanup code.
209	*/
210	PUVM pUVM = NULL; /* shuts up gcc */
211	int rc = vmR3CreateUVM(cCpus, &pUVM);
212	if (RT_FAILURE(rc))
213	return rc;
214	if (pfnVMAtError)
215	rc = VMR3AtErrorRegisterU(pUVM, pfnVMAtError, pvUserVM);
216	if (RT_SUCCESS(rc))
217	{
218	/*
219	* Initialize the support library creating the session for this VM.
220	*/
221	rc = SUPR3Init(&pUVM->vm.s.pSession);
222	if (RT_SUCCESS(rc))
223	{
224	/*
225	* Call vmR3CreateU in the EMT thread and wait for it to finish.
226	*
227	* Note! VMCPUID_ANY is used here because VMR3ReqQueueU would have trouble
228	* submitting a request to a specific VCPU without a pVM. So, to make
229	* sure init is running on EMT(0), vmR3EmulationThreadWithId makes sure
230	* that only EMT(0) is servicing VMCPUID_ANY requests when pVM is NULL.
231	*/
232	PVMREQ pReq;
233	rc = VMR3ReqCallU(pUVM, VMCPUID_ANY, &pReq, RT_INDEFINITE_WAIT, VMREQFLAGS_VBOX_STATUS,
234	(PFNRT)vmR3CreateU, 4, pUVM, cCpus, pfnCFGMConstructor, pvUserCFGM);
235	if (RT_SUCCESS(rc))
236	{
237	rc = pReq->iStatus;
238	VMR3ReqFree(pReq);
239	if (RT_SUCCESS(rc))
240	{
241	/*
242	* Success!
243	*/
244	*ppVM = pUVM->pVM;
245	LogFlow(("VMR3Create: returns VINF_SUCCESS ppVM=%p\n", ppVM));
246	return VINF_SUCCESS;
247	}
248	}
249	else
250	AssertMsgFailed(("VMR3ReqCallU failed rc=%Rrc\n", rc));
251
252	/*
253	* An error occurred during VM creation. Set the error message directly
254	* using the initial callback, as the callback list doesn't exist yet.
255	*/
256	const char *pszError = NULL;
257	switch (rc)
258	{
259	case VERR_VMX_IN_VMX_ROOT_MODE:
260	#ifdef RT_OS_LINUX
261	pszError = N_("VirtualBox can't operate in VMX root mode. "
262	"Please disable the KVM kernel extension, recompile your kernel and reboot");
263	#else
264	pszError = N_("VirtualBox can't operate in VMX root mode. Please close all other virtualization programs.");
265	#endif
266	break;
267
268	case VERR_SVM_IN_USE:
269	#ifdef RT_OS_LINUX
270	pszError = N_("VirtualBox can't enable the AMD-V extension. "
271	"Please disable the KVM kernel extension, recompile your kernel and reboot");
272	#else
273	pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs.");
274	#endif
275	break;
276
277	case VERR_VERSION_MISMATCH:
278	pszError = N_("VMMR0 driver version mismatch. Please terminate all VMs, make sure that "
279	"VBoxNetDHCP is not running and try again. If you still get this error, "
280	"re-install VirtualBox");
281	break;
282
283	#ifdef RT_OS_LINUX
284	case VERR_SUPDRV_COMPONENT_NOT_FOUND:
285	pszError = N_("One of the kernel modules was not successfully loaded. Make sure "
286	"that no kernel modules from an older version of VirtualBox exist. "
287	"Then try to recompile and reload the kernel modules by executing "
288	"'/etc/init.d/vboxdrv setup' as root");
289	break;
290	#endif
291
292	case VERR_RAW_MODE_INVALID_SMP:
293	pszError = N_("VT-x/AMD-V is either not available on your host or disabled. "
294	"VirtualBox requires this hardware extension to emulate more than one "
295	"guest CPU");
296	break;
297
298	case VERR_SUPDRV_KERNEL_TOO_OLD_FOR_VTX:
299	#ifdef RT_OS_LINUX
300	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
301	"extension. Either upgrade your kernel to Linux 2.6.13 or later or disable "
302	"the VT-x extension in the VM settings. Note that without VT-x you have "
303	"to reduce the number of guest CPUs to one");
304	#else
305	pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x "
306	"extension. Either upgrade your kernel or disable the VT-x extension in the "
307	"VM settings. Note that without VT-x you have to reduce the number of guest "
308	"CPUs to one");
309	#endif
310	break;
311
312	default:
313	pszError = N_("Unknown error creating VM");
314	break;
315	}
316	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
317	}
318	else
319	{
320	/*
321	* An error occurred at support library initialization time (before the
322	* VM could be created). Set the error message directly using the
323	* initial callback, as the callback list doesn't exist yet.
324	*/
325	const char *pszError;
326	switch (rc)
327	{
328	case VERR_VM_DRIVER_LOAD_ERROR:
329	#ifdef RT_OS_LINUX
330	pszError = N_("VirtualBox kernel driver not loaded. The vboxdrv kernel module "
331	"was either not loaded or /dev/vboxdrv is not set up properly. "
332	"Re-setup the kernel module by executing "
333	"'/etc/init.d/vboxdrv setup' as root");
334	#else
335	pszError = N_("VirtualBox kernel driver not loaded");
336	#endif
337	break;
338	case VERR_VM_DRIVER_OPEN_ERROR:
339	pszError = N_("VirtualBox kernel driver cannot be opened");
340	break;
341	case VERR_VM_DRIVER_NOT_ACCESSIBLE:
342	#ifdef VBOX_WITH_HARDENING
343	/* This should only happen if the executable wasn't hardened - bad code/build. */
344	pszError = N_("VirtualBox kernel driver not accessible, permission problem. "
345	"Re-install VirtualBox. If you are building it yourself, you "
346	"should make sure it installed correctly and that the setuid "
347	"bit is set on the executables calling VMR3Create.");
348	#else
349	/* This should only happen when mixing builds or with the usual /dev/vboxdrv access issues. */
350	# if defined(RT_OS_DARWIN)
351	pszError = N_("VirtualBox KEXT is not accessible, permission problem. "
352	"If you have built VirtualBox yourself, make sure that you do not "
353	"have the vboxdrv KEXT from a different build or installation loaded.");
354	# elif defined(RT_OS_LINUX)
355	pszError = N_("VirtualBox kernel driver is not accessible, permission problem. "
356	"If you have built VirtualBox yourself, make sure that you do "
357	"not have the vboxdrv kernel module from a different build or "
358	"installation loaded. Also, make sure the vboxdrv udev rule gives "
359	"you the permission you need to access the device.");
360	# elif defined(RT_OS_WINDOWS)
361	pszError = N_("VirtualBox kernel driver is not accessible, permission problem.");
362	# else /* solaris, freebsd, ++. */
363	pszError = N_("VirtualBox kernel module is not accessible, permission problem. "
364	"If you have built VirtualBox yourself, make sure that you do "
365	"not have the vboxdrv kernel module from a different install loaded.");
366	# endif
367	#endif
368	break;
369	case VERR_INVALID_HANDLE: /** @todo track down and fix this error. */
370	case VERR_VM_DRIVER_NOT_INSTALLED:
371	#ifdef RT_OS_LINUX
372	pszError = N_("VirtualBox kernel driver not installed. The vboxdrv kernel module "
373	"was either not loaded or /dev/vboxdrv was not created for some "
374	"reason. Re-setup the kernel module by executing "
375	"'/etc/init.d/vboxdrv setup' as root");
376	#else
377	pszError = N_("VirtualBox kernel driver not installed");
378	#endif
379	break;
380	case VERR_NO_MEMORY:
381	pszError = N_("VirtualBox support library out of memory");
382	break;
383	case VERR_VERSION_MISMATCH:
384	case VERR_VM_DRIVER_VERSION_MISMATCH:
385	pszError = N_("The VirtualBox support driver which is running is from a different "
386	"version of VirtualBox. You can correct this by stopping all "
387	"running instances of VirtualBox and reinstalling the software.");
388	break;
389	default:
390	pszError = N_("Unknown error initializing kernel driver");
391	AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc));
392	}
393	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc);
394	}
395	}
396
397	/* cleanup */
398	vmR3DestroyUVM(pUVM, 2000);
399	LogFlow(("VMR3Create: returns %Rrc\n", rc));
400	return rc;
401	}
402
403
404	/**
405	* Creates the UVM.
406	*
407	* This will not initialize the support library even if vmR3DestroyUVM
408	* will terminate that.
409	*
410	* @returns VBox status code.
411	* @param cCpus Number of virtual CPUs
412	* @param ppUVM Where to store the UVM pointer.
413	*/
414	static int vmR3CreateUVM(uint32_t cCpus, PUVM *ppUVM)
415	{
416	uint32_t i;
417
418	/*
419	* Create and initialize the UVM.
420	*/
421	PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_OFFSETOF(UVM, aCpus[cCpus]));
422	AssertReturn(pUVM, VERR_NO_MEMORY);
423	pUVM->u32Magic = UVM_MAGIC;
424	pUVM->cCpus = cCpus;
425
426	AssertCompile(sizeof(pUVM->vm.s) <= sizeof(pUVM->vm.padding));
427
428	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
429	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
430	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
431
432	pUVM->vm.s.enmHaltMethod = VMHALTMETHOD_BOOTSTRAP;
433
434	/* Initialize the VMCPU array in the UVM. */
435	for (i = 0; i < cCpus; i++)
436	{
437	pUVM->aCpus[i].pUVM = pUVM;
438	pUVM->aCpus[i].idCpu = i;
439	}
440
441	/* Allocate a TLS entry to store the VMINTUSERPERVMCPU pointer. */
442	int rc = RTTlsAllocEx(&pUVM->vm.s.idxTLS, NULL);
443	AssertRC(rc);
444	if (RT_SUCCESS(rc))
445	{
446	/* Allocate a halt method event semaphore for each VCPU. */
447	for (i = 0; i < cCpus; i++)
448	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
449	for (i = 0; i < cCpus; i++)
450	{
451	rc = RTSemEventCreate(&pUVM->aCpus[i].vm.s.EventSemWait);
452	if (RT_FAILURE(rc))
453	break;
454	}
455	if (RT_SUCCESS(rc))
456	{
457	rc = RTCritSectInit(&pUVM->vm.s.AtStateCritSect);
458	if (RT_SUCCESS(rc))
459	{
460	rc = RTCritSectInit(&pUVM->vm.s.AtErrorCritSect);
461	if (RT_SUCCESS(rc))
462	{
463	/*
464	* Init fundamental (sub-)components - STAM, MMR3Heap and PDMLdr.
465	*/
466	rc = STAMR3InitUVM(pUVM);
467	if (RT_SUCCESS(rc))
468	{
469	rc = MMR3InitUVM(pUVM);
470	if (RT_SUCCESS(rc))
471	{
472	rc = PDMR3InitUVM(pUVM);
473	if (RT_SUCCESS(rc))
474	{
475	/*
476	* Start the emulation threads for all VMCPUs.
477	*/
478	for (i = 0; i < cCpus; i++)
479	{
480	rc = RTThreadCreateF(&pUVM->aCpus[i].vm.s.ThreadEMT, vmR3EmulationThread, &pUVM->aCpus[i], _1M,
481	RTTHREADTYPE_EMULATION, RTTHREADFLAGS_WAITABLE,
482	cCpus > 1 ? "EMT-%u" : "EMT", i);
483	if (RT_FAILURE(rc))
484	break;
485
486	pUVM->aCpus[i].vm.s.NativeThreadEMT = RTThreadGetNative(pUVM->aCpus[i].vm.s.ThreadEMT);
487	}
488
489	if (RT_SUCCESS(rc))
490	{
491	*ppUVM = pUVM;
492	return VINF_SUCCESS;
493	}
494
495	/* bail out. */
496	while (i-- > 0)
497	{
498	/** @todo rainy day: terminate the EMTs. */
499	}
500	PDMR3TermUVM(pUVM);
501	}
502	MMR3TermUVM(pUVM);
503	}
504	STAMR3TermUVM(pUVM);
505	}
506	RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect);
507	}
508	RTCritSectDelete(&pUVM->vm.s.AtStateCritSect);
509	}
510	}
511	for (i = 0; i < cCpus; i++)
512	{
513	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
514	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
515	}
516	RTTlsFree(pUVM->vm.s.idxTLS);
517	}
518	RTMemPageFree(pUVM, sizeof(*pUVM));
519	return rc;
520	}
521
522
523	/**
524	* Creates and initializes the VM.
525	*
526	* @thread EMT
527	*/
528	static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM)
529	{
530	int rc = VINF_SUCCESS;
531
532	/*
533	* Load the VMMR0.r0 module so that we can call GVMMR0CreateVM.
534	*/
535	rc = PDMR3LdrLoadVMMR0U(pUVM);
536	if (RT_FAILURE(rc))
537	{
538	/** @todo we need a cleaner solution for this (VERR_VMX_IN_VMX_ROOT_MODE).
539	* bird: what about moving the message down here? Main picks the first message, right? */
540	if (rc == VERR_VMX_IN_VMX_ROOT_MODE)
541	return rc; /* proper error message set later on */
542	return vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("Failed to load VMMR0.r0"));
543	}
544
545	/*
546	* Request GVMM to create a new VM for us.
547	*/
548	GVMMCREATEVMREQ CreateVMReq;
549	CreateVMReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
550	CreateVMReq.Hdr.cbReq = sizeof(CreateVMReq);
551	CreateVMReq.pSession = pUVM->vm.s.pSession;
552	CreateVMReq.pVMR0 = NIL_RTR0PTR;
553	CreateVMReq.pVMR3 = NULL;
554	CreateVMReq.cCpus = cCpus;
555	rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_GVMM_CREATE_VM, 0, &CreateVMReq.Hdr);
556	if (RT_SUCCESS(rc))
557	{
558	PVM pVM = pUVM->pVM = CreateVMReq.pVMR3;
559	AssertRelease(VALID_PTR(pVM));
560	AssertRelease(pVM->pVMR0 == CreateVMReq.pVMR0);
561	AssertRelease(pVM->pSession == pUVM->vm.s.pSession);
562	AssertRelease(pVM->cCpus == cCpus);
563	AssertRelease(pVM->uCpuPriority == 100);
564	AssertRelease(pVM->offVMCPU == RT_UOFFSETOF(VM, aCpus));
565
566	Log(("VMR3Create: Created pUVM=%p pVM=%p pVMR0=%p hSelf=%#x cCpus=%RU32\n",
567	pUVM, pVM, pVM->pVMR0, pVM->hSelf, pVM->cCpus));
568
569	/*
570	* Initialize the VM structure and our internal data (VMINT).
571	*/
572	pVM->pUVM = pUVM;
573
574	for (VMCPUID i = 0; i < pVM->cCpus; i++)
575	{
576	pVM->aCpus[i].pUVCpu = &pUVM->aCpus[i];
577	pVM->aCpus[i].idCpu = i;
578	pVM->aCpus[i].hNativeThread = pUVM->aCpus[i].vm.s.NativeThreadEMT;
579	Assert(pVM->aCpus[i].hNativeThread != NIL_RTNATIVETHREAD);
580
581	pUVM->aCpus[i].pVCpu = &pVM->aCpus[i];
582	pUVM->aCpus[i].pVM = pVM;
583	}
584
585
586	/*
587	* Init the configuration.
588	*/
589	rc = CFGMR3Init(pVM, pfnCFGMConstructor, pvUserCFGM);
590	if (RT_SUCCESS(rc))
591	{
592	PCFGMNODE pRoot = CFGMR3GetRoot(pVM);
593	rc = CFGMR3QueryBoolDef(pRoot, "HwVirtExtForced", &pVM->fHwVirtExtForced, false);
594	if (RT_SUCCESS(rc) && pVM->fHwVirtExtForced)
595	pVM->fHWACCMEnabled = true;
596
597	/*
598	* If executing in fake suplib mode disable RR3 and RR0 in the config.
599	*/
600	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
601	if (psz && !strcmp(psz, "fake"))
602	{
603	CFGMR3RemoveValue(pRoot, "RawR3Enabled");
604	CFGMR3InsertInteger(pRoot, "RawR3Enabled", 0);
605	CFGMR3RemoveValue(pRoot, "RawR0Enabled");
606	CFGMR3InsertInteger(pRoot, "RawR0Enabled", 0);
607	}
608
609	/*
610	* Make sure the CPU count in the config data matches.
611	*/
612	if (RT_SUCCESS(rc))
613	{
614	uint32_t cCPUsCfg;
615	rc = CFGMR3QueryU32Def(pRoot, "NumCPUs", &cCPUsCfg, 1);
616	AssertLogRelMsgRC(rc, ("Configuration error: Querying \"NumCPUs\" as integer failed, rc=%Rrc\n", rc));
617	if (RT_SUCCESS(rc) && cCPUsCfg != cCpus)
618	{
619	AssertLogRelMsgFailed(("Configuration error: \"NumCPUs\"=%RU32 and VMR3CreateVM::cCpus=%RU32 does not match!\n",
620	cCPUsCfg, cCpus));
621	rc = VERR_INVALID_PARAMETER;
622	}
623	}
624	if (RT_SUCCESS(rc))
625	{
626	rc = CFGMR3QueryU32Def(pRoot, "CpuPriority", &pVM->uCpuPriority, 100);
627	AssertLogRelMsgRC(rc, ("Configuration error: Querying \"CpuPriority\" as integer failed, rc=%Rrc\n", rc));
628
629	/*
630	* Init the ring-3 components and ring-3 per cpu data, finishing it off
631	* by a relocation round (intermediate context finalization will do this).
632	*/
633	rc = vmR3InitRing3(pVM, pUVM);
634	if (RT_SUCCESS(rc))
635	{
636	rc = vmR3InitVMCpu(pVM);
637	if (RT_SUCCESS(rc))
638	rc = PGMR3FinalizeMappings(pVM);
639	if (RT_SUCCESS(rc))
640	{
641
642	LogFlow(("Ring-3 init succeeded\n"));
643
644	/*
645	* Init the Ring-0 components.
646	*/
647	rc = vmR3InitRing0(pVM);
648	if (RT_SUCCESS(rc))
649	{
650	/* Relocate again, because some switcher fixups depends on R0 init results. */
651	VMR3Relocate(pVM, 0);
652
653	#ifdef VBOX_WITH_DEBUGGER
654	/*
655	* Init the tcp debugger console if we're building
656	* with debugger support.
657	*/
658	void *pvUser = NULL;
659	rc = DBGCTcpCreate(pVM, &pvUser);
660	if ( RT_SUCCESS(rc)
661	\|\| rc == VERR_NET_ADDRESS_IN_USE)
662	{
663	pUVM->vm.s.pvDBGC = pvUser;
664	#endif
665	/*
666	* Init the Guest Context components.
667	*/
668	rc = vmR3InitGC(pVM);
669	if (RT_SUCCESS(rc))
670	{
671	/*
672	* Now we can safely set the VM halt method to default.
673	*/
674	rc = vmR3SetHaltMethodU(pUVM, VMHALTMETHOD_DEFAULT);
675	if (RT_SUCCESS(rc))
676	{
677	/*
678	* Set the state and link into the global list.
679	*/
680	vmR3SetState(pVM, VMSTATE_CREATED, VMSTATE_CREATING);
681	pUVM->pNext = g_pUVMsHead;
682	g_pUVMsHead = pUVM;
683
684	#ifdef LOG_ENABLED
685	RTLogSetCustomPrefixCallback(NULL, vmR3LogPrefixCallback, pUVM);
686	#endif
687	return VINF_SUCCESS;
688	}
689	}
690	#ifdef VBOX_WITH_DEBUGGER
691	DBGCTcpTerminate(pVM, pUVM->vm.s.pvDBGC);
692	pUVM->vm.s.pvDBGC = NULL;
693	}
694	#endif
695	//..
696	}
697	}
698	vmR3Destroy(pVM);
699	}
700	}
701	//..
702
703	/* Clean CFGM. */
704	int rc2 = CFGMR3Term(pVM);
705	AssertRC(rc2);
706	}
707
708	/*
709	* Do automatic cleanups while the VM structure is still alive and all
710	* references to it are still working.
711	*/
712	PDMR3CritSectTerm(pVM);
713
714	/*
715	* Drop all references to VM and the VMCPU structures, then
716	* tell GVMM to destroy the VM.
717	*/
718	pUVM->pVM = NULL;
719	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
720	{
721	pUVM->aCpus[i].pVM = NULL;
722	pUVM->aCpus[i].pVCpu = NULL;
723	}
724	Assert(pUVM->vm.s.enmHaltMethod == VMHALTMETHOD_BOOTSTRAP);
725
726	if (pUVM->cCpus > 1)
727	{
728	/* Poke the other EMTs since they may have stale pVM and pVCpu references
729	on the stack (see VMR3WaitU for instance) if they've been awakened after
730	VM creation. */
731	for (VMCPUID i = 1; i < pUVM->cCpus; i++)
732	VMR3NotifyCpuFFU(&pUVM->aCpus[i], 0);
733	RTThreadSleep(RT_MIN(100 + 25 (pUVM->cCpus - 1), 500)); / very sophisticated */
734	}
735
736	int rc2 = SUPR3CallVMMR0Ex(CreateVMReq.pVMR0, 0 /idCpu/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL);
737	AssertRC(rc2);
738	}
739	else
740	vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("VM creation failed (GVMM)"));
741
742	LogFlow(("vmR3CreateU: returns %Rrc\n", rc));
743	return rc;
744	}
745
746
747	/**
748	* Register the calling EMT with GVM.
749	*
750	* @returns VBox status code.
751	* @param pVM The VM handle.
752	* @param idCpu The Virtual CPU ID.
753	*/
754	static DECLCALLBACK(int) vmR3RegisterEMT(PVM pVM, VMCPUID idCpu)
755	{
756	Assert(VMMGetCpuId(pVM) == idCpu);
757	int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, idCpu, VMMR0_DO_GVMM_REGISTER_VMCPU, 0, NULL);
758	if (RT_FAILURE(rc))
759	LogRel(("idCpu=%u rc=%Rrc\n", idCpu, rc));
760	return rc;
761	}
762
763
764	/**
765	* Initializes all R3 components of the VM
766	*/
767	static int vmR3InitRing3(PVM pVM, PUVM pUVM)
768	{
769	int rc;
770
771	/*
772	* Register the other EMTs with GVM.
773	*/
774	for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++)
775	{
776	rc = VMR3ReqCallWaitU(pUVM, idCpu, (PFNRT)vmR3RegisterEMT, 2, pVM, idCpu);
777	if (RT_FAILURE(rc))
778	return rc;
779	}
780
781	/*
782	* Init all R3 components, the order here might be important.
783	*/
784	rc = MMR3Init(pVM);
785	if (RT_SUCCESS(rc))
786	{
787	STAM_REG(pVM, &pVM->StatTotalInGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/InGC", STAMUNIT_TICKS_PER_CALL, "Profiling the total time spent in GC.");
788	STAM_REG(pVM, &pVM->StatSwitcherToGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToGC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
789	STAM_REG(pVM, &pVM->StatSwitcherToHC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToHC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to HC.");
790	STAM_REG(pVM, &pVM->StatSwitcherSaveRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SaveRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
791	STAM_REG(pVM, &pVM->StatSwitcherSysEnter, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SysEnter", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
792	STAM_REG(pVM, &pVM->StatSwitcherDebug, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Debug", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
793	STAM_REG(pVM, &pVM->StatSwitcherCR0, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR0", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
794	STAM_REG(pVM, &pVM->StatSwitcherCR4, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR4", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
795	STAM_REG(pVM, &pVM->StatSwitcherLgdt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lgdt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
796	STAM_REG(pVM, &pVM->StatSwitcherLidt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lidt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
797	STAM_REG(pVM, &pVM->StatSwitcherLldt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lldt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
798	STAM_REG(pVM, &pVM->StatSwitcherTSS, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/TSS", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC.");
799	STAM_REG(pVM, &pVM->StatSwitcherJmpCR3, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/JmpCR3", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
800	STAM_REG(pVM, &pVM->StatSwitcherRstrRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/RstrRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC.");
801
802	for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
803	{
804	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);
805	AssertRC(rc);
806	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);
807	AssertRC(rc);
808	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);
809	AssertRC(rc);
810	}
811
812	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocNew, STAMTYPE_COUNTER, "/VM/Req/AllocNew", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a new packet.");
813	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRaces, STAMTYPE_COUNTER, "/VM/Req/AllocRaces", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc causing races.");
814	STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRecycled, STAMTYPE_COUNTER, "/VM/Req/AllocRecycled", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a recycled packet.");
815	STAM_REG(pVM, &pUVM->vm.s.StatReqFree, STAMTYPE_COUNTER, "/VM/Req/Free", STAMUNIT_OCCURENCES, "Number of VMR3ReqFree calls.");
816	STAM_REG(pVM, &pUVM->vm.s.StatReqFreeOverflow, STAMTYPE_COUNTER, "/VM/Req/FreeOverflow", STAMUNIT_OCCURENCES, "Number of times the request was actually freed.");
817	STAM_REG(pVM, &pUVM->vm.s.StatReqProcessed, STAMTYPE_COUNTER, "/VM/Req/Processed", STAMUNIT_OCCURENCES, "Number of processed requests (any queue).");
818	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.");
819	STAM_REG(pVM, &pUVM->vm.s.StatReqPushBackRaces, STAMTYPE_COUNTER, "/VM/Req/PushBackRaces", STAMUNIT_OCCURENCES, "Number of push back races.");
820
821	rc = CPUMR3Init(pVM);
822	if (RT_SUCCESS(rc))
823	{
824	rc = HWACCMR3Init(pVM);
825	if (RT_SUCCESS(rc))
826	{
827	rc = PGMR3Init(pVM);
828	if (RT_SUCCESS(rc))
829	{
830	rc = REMR3Init(pVM);
831	if (RT_SUCCESS(rc))
832	{
833	rc = MMR3InitPaging(pVM);
834	if (RT_SUCCESS(rc))
835	rc = TMR3Init(pVM);
836	if (RT_SUCCESS(rc))
837	{
838	rc = VMMR3Init(pVM);
839	if (RT_SUCCESS(rc))
840	{
841	rc = SELMR3Init(pVM);
842	if (RT_SUCCESS(rc))
843	{
844	rc = TRPMR3Init(pVM);
845	if (RT_SUCCESS(rc))
846	{
847	rc = CSAMR3Init(pVM);
848	if (RT_SUCCESS(rc))
849	{
850	rc = PATMR3Init(pVM);
851	if (RT_SUCCESS(rc))
852	{
853	rc = IOMR3Init(pVM);
854	if (RT_SUCCESS(rc))
855	{
856	rc = EMR3Init(pVM);
857	if (RT_SUCCESS(rc))
858	{
859	rc = DBGFR3Init(pVM);
860	if (RT_SUCCESS(rc))
861	{
862	rc = PDMR3Init(pVM);
863	if (RT_SUCCESS(rc))
864	{
865	rc = PGMR3InitDynMap(pVM);
866	if (RT_SUCCESS(rc))
867	rc = MMR3HyperInitFinalize(pVM);
868	if (RT_SUCCESS(rc))
869	rc = PATMR3InitFinalize(pVM);
870	if (RT_SUCCESS(rc))
871	rc = PGMR3InitFinalize(pVM);
872	if (RT_SUCCESS(rc))
873	rc = SELMR3InitFinalize(pVM);
874	if (RT_SUCCESS(rc))
875	rc = TMR3InitFinalize(pVM);
876	if (RT_SUCCESS(rc))
877	rc = VMMR3InitFinalize(pVM);
878	if (RT_SUCCESS(rc))
879	rc = REMR3InitFinalize(pVM);
880	if (RT_SUCCESS(rc))
881	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING3);
882	if (RT_SUCCESS(rc))
883	{
884	LogFlow(("vmR3InitRing3: returns %Rrc\n", VINF_SUCCESS));
885	return VINF_SUCCESS;
886	}
887	int rc2 = PDMR3Term(pVM);
888	AssertRC(rc2);
889	}
890	int rc2 = DBGFR3Term(pVM);
891	AssertRC(rc2);
892	}
893	int rc2 = EMR3Term(pVM);
894	AssertRC(rc2);
895	}
896	int rc2 = IOMR3Term(pVM);
897	AssertRC(rc2);
898	}
899	int rc2 = PATMR3Term(pVM);
900	AssertRC(rc2);
901	}
902	int rc2 = CSAMR3Term(pVM);
903	AssertRC(rc2);
904	}
905	int rc2 = TRPMR3Term(pVM);
906	AssertRC(rc2);
907	}
908	int rc2 = SELMR3Term(pVM);
909	AssertRC(rc2);
910	}
911	int rc2 = VMMR3Term(pVM);
912	AssertRC(rc2);
913	}
914	int rc2 = TMR3Term(pVM);
915	AssertRC(rc2);
916	}
917	int rc2 = REMR3Term(pVM);
918	AssertRC(rc2);
919	}
920	int rc2 = PGMR3Term(pVM);
921	AssertRC(rc2);
922	}
923	int rc2 = HWACCMR3Term(pVM);
924	AssertRC(rc2);
925	}
926	//int rc2 = CPUMR3Term(pVM);
927	//AssertRC(rc2);
928	}
929	/* MMR3Term is not called here because it'll kill the heap. */
930	}
931
932	LogFlow(("vmR3InitRing3: returns %Rrc\n", rc));
933	return rc;
934	}
935
936
937	/**
938	* Initializes all VM CPU components of the VM
939	*/
940	static int vmR3InitVMCpu(PVM pVM)
941	{
942	int rc = VINF_SUCCESS;
943	int rc2;
944
945	rc = CPUMR3InitCPU(pVM);
946	if (RT_SUCCESS(rc))
947	{
948	rc = HWACCMR3InitCPU(pVM);
949	if (RT_SUCCESS(rc))
950	{
951	rc = PGMR3InitCPU(pVM);
952	if (RT_SUCCESS(rc))
953	{
954	rc = TMR3InitCPU(pVM);
955	if (RT_SUCCESS(rc))
956	{
957	rc = VMMR3InitCPU(pVM);
958	if (RT_SUCCESS(rc))
959	{
960	rc = EMR3InitCPU(pVM);
961	if (RT_SUCCESS(rc))
962	{
963	LogFlow(("vmR3InitVMCpu: returns %Rrc\n", VINF_SUCCESS));
964	return VINF_SUCCESS;
965	}
966
967	rc2 = VMMR3TermCPU(pVM);
968	AssertRC(rc2);
969	}
970	rc2 = TMR3TermCPU(pVM);
971	AssertRC(rc2);
972	}
973	rc2 = PGMR3TermCPU(pVM);
974	AssertRC(rc2);
975	}
976	rc2 = HWACCMR3TermCPU(pVM);
977	AssertRC(rc2);
978	}
979	rc2 = CPUMR3TermCPU(pVM);
980	AssertRC(rc2);
981	}
982	LogFlow(("vmR3InitVMCpu: returns %Rrc\n", rc));
983	return rc;
984	}
985
986
987	/**
988	* Initializes all R0 components of the VM
989	*/
990	static int vmR3InitRing0(PVM pVM)
991	{
992	LogFlow(("vmR3InitRing0:\n"));
993
994	/*
995	* Check for FAKE suplib mode.
996	*/
997	int rc = VINF_SUCCESS;
998	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
999	if (!psz \|\| strcmp(psz, "fake"))
1000	{
1001	/*
1002	* Call the VMMR0 component and let it do the init.
1003	*/
1004	rc = VMMR3InitR0(pVM);
1005	}
1006	else
1007	Log(("vmR3InitRing0: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1008
1009	/*
1010	* Do notifications and return.
1011	*/
1012	if (RT_SUCCESS(rc))
1013	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING0);
1014
1015	/** @todo Move this to the VMINITCOMPLETED_RING0 notification handler. */
1016	if (RT_SUCCESS(rc))
1017	{
1018	rc = HWACCMR3InitFinalizeR0(pVM);
1019	CPUMR3SetHWVirtEx(pVM, HWACCMIsEnabled(pVM));
1020	}
1021
1022	LogFlow(("vmR3InitRing0: returns %Rrc\n", rc));
1023	return rc;
1024	}
1025
1026
1027	/**
1028	* Initializes all GC components of the VM
1029	*/
1030	static int vmR3InitGC(PVM pVM)
1031	{
1032	LogFlow(("vmR3InitGC:\n"));
1033
1034	/*
1035	* Check for FAKE suplib mode.
1036	*/
1037	int rc = VINF_SUCCESS;
1038	const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE");
1039	if (!psz \|\| strcmp(psz, "fake"))
1040	{
1041	/*
1042	* Call the VMMR0 component and let it do the init.
1043	*/
1044	rc = VMMR3InitRC(pVM);
1045	}
1046	else
1047	Log(("vmR3InitGC: skipping because of VBOX_SUPLIB_FAKE=fake\n"));
1048
1049	/*
1050	* Do notifications and return.
1051	*/
1052	if (RT_SUCCESS(rc))
1053	rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_GC);
1054	LogFlow(("vmR3InitGC: returns %Rrc\n", rc));
1055	return rc;
1056	}
1057
1058
1059	/**
1060	* Do init completed notifications.
1061	* This notifications can fail.
1062	*
1063	* @param pVM The VM handle.
1064	* @param enmWhat What's completed.
1065	*/
1066	static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat)
1067	{
1068	return VINF_SUCCESS;
1069	}
1070
1071
1072	/**
1073	* Logger callback for inserting a custom prefix.
1074	*
1075	* @returns Number of chars written.
1076	* @param pLogger The logger.
1077	* @param pchBuf The output buffer.
1078	* @param cchBuf The output buffer size.
1079	* @param pvUser Pointer to the UVM structure.
1080	*/
1081	static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char pchBuf, size_t cchBuf, void pvUser)
1082	{
1083	AssertReturn(cchBuf >= 2, 0);
1084	PUVM pUVM = (PUVM)pvUser;
1085	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
1086	if (pUVCpu)
1087	{
1088	static const char s_szHex[17] = "0123456789abcdef";
1089	VMCPUID const idCpu = pUVCpu->idCpu;
1090	pchBuf[1] = s_szHex[ idCpu & 15];
1091	pchBuf[0] = s_szHex[(idCpu >> 4) & 15];
1092	}
1093	else
1094	{
1095	pchBuf[0] = 'x';
1096	pchBuf[1] = 'y';
1097	}
1098
1099	return 2;
1100	}
1101
1102
1103	/**
1104	* Calls the relocation functions for all VMM components so they can update
1105	* any GC pointers. When this function is called all the basic VM members
1106	* have been updated and the actual memory relocation have been done
1107	* by the PGM/MM.
1108	*
1109	* This is used both on init and on runtime relocations.
1110	*
1111	* @param pVM VM handle.
1112	* @param offDelta Relocation delta relative to old location.
1113	*/
1114	VMMR3DECL(void) VMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
1115	{
1116	LogFlow(("VMR3Relocate: offDelta=%RGv\n", offDelta));
1117
1118	/*
1119	* The order here is very important!
1120	*/
1121	PGMR3Relocate(pVM, offDelta);
1122	PDMR3LdrRelocateU(pVM->pUVM, offDelta);
1123	PGMR3Relocate(pVM, 0); /* Repeat after PDM relocation. */
1124	CPUMR3Relocate(pVM);
1125	HWACCMR3Relocate(pVM);
1126	SELMR3Relocate(pVM);
1127	VMMR3Relocate(pVM, offDelta);
1128	SELMR3Relocate(pVM); /* !hack! fix stack! */
1129	TRPMR3Relocate(pVM, offDelta);
1130	PATMR3Relocate(pVM);
1131	CSAMR3Relocate(pVM, offDelta);
1132	IOMR3Relocate(pVM, offDelta);
1133	EMR3Relocate(pVM);
1134	TMR3Relocate(pVM, offDelta);
1135	DBGFR3Relocate(pVM, offDelta);
1136	PDMR3Relocate(pVM, offDelta);
1137	}
1138
1139
1140	/**
1141	* EMT rendezvous worker for VMR3PowerOn.
1142	*
1143	* @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return
1144	* code, see FNVMMEMTRENDEZVOUS.)
1145	*
1146	* @param pVM The VM handle.
1147	* @param pVCpu The VMCPU handle of the EMT.
1148	* @param pvUser Ignored.
1149	*/
1150	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser)
1151	{
1152	LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1153	Assert(!pvUser); NOREF(pvUser);
1154
1155	/*
1156	* The first thread thru here tries to change the state. We shouldn't be
1157	* called again if this fails.
1158	*/
1159	if (pVCpu->idCpu == pVM->cCpus - 1)
1160	{
1161	int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED);
1162	if (RT_FAILURE(rc))
1163	return rc;
1164	}
1165
1166	VMSTATE enmVMState = VMR3GetState(pVM);
1167	AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON,
1168	("%s\n", VMR3GetStateName(enmVMState)),
1169	VERR_INTERNAL_ERROR_4);
1170
1171	/*
1172	* All EMTs changes their state to started.
1173	*/
1174	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1175
1176	/*
1177	* EMT(0) is last thru here and it will make the notification calls
1178	* and advance the state.
1179	*/
1180	if (pVCpu->idCpu == 0)
1181	{
1182	PDMR3PowerOn(pVM);
1183	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON);
1184	}
1185
1186	return VINF_SUCCESS;
1187	}
1188
1189
1190	/**
1191	* Powers on the virtual machine.
1192	*
1193	* @returns VBox status code.
1194	*
1195	* @param pVM The VM to power on.
1196	*
1197	* @thread Any thread.
1198	* @vmstate Created
1199	* @vmstateto PoweringOn+Running
1200	*/
1201	VMMR3DECL(int) VMR3PowerOn(PVM pVM)
1202	{
1203	LogFlow(("VMR3PowerOn: pVM=%p\n", pVM));
1204	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1205
1206	/*
1207	* Gather all the EMTs to reduce the init TSC drift and keep
1208	* the state changing APIs a bit uniform.
1209	*/
1210	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1211	vmR3PowerOn, NULL);
1212	LogFlow(("VMR3PowerOn: returns %Rrc\n", rc));
1213	return rc;
1214	}
1215
1216
1217	/**
1218	* Does the suspend notifications.
1219	*
1220	* @param pVM The VM handle.
1221	* @thread EMT(0)
1222	*/
1223	static void vmR3SuspendDoWork(PVM pVM)
1224	{
1225	PDMR3Suspend(pVM);
1226	}
1227
1228
1229	/**
1230	* EMT rendezvous worker for VMR3Suspend.
1231	*
1232	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict
1233	* return code, see FNVMMEMTRENDEZVOUS.)
1234	*
1235	* @param pVM The VM handle.
1236	* @param pVCpu The VMCPU handle of the EMT.
1237	* @param pvUser Ignored.
1238	*/
1239	static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1240	{
1241	LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1242	Assert(!pvUser); NOREF(pvUser);
1243
1244	/*
1245	* The first EMT switches the state to suspending. If this fails because
1246	* something was racing us in one way or the other, there will be no more
1247	* calls and thus the state assertion below is not going to annoy anyone.
1248	*/
1249	if (pVCpu->idCpu == pVM->cCpus - 1)
1250	{
1251	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1252	VMSTATE_SUSPENDING, VMSTATE_RUNNING,
1253	VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS);
1254	if (RT_FAILURE(rc))
1255	return rc;
1256	}
1257
1258	VMSTATE enmVMState = VMR3GetState(pVM);
1259	AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING
1260	\|\| enmVMState == VMSTATE_SUSPENDING_EXT_LS,
1261	("%s\n", VMR3GetStateName(enmVMState)),
1262	VERR_INTERNAL_ERROR_4);
1263
1264	/*
1265	* EMT(0) does the actually suspending after all the other CPUs have
1266	* been thru here.
1267	*/
1268	if (pVCpu->idCpu == 0)
1269	{
1270	vmR3SuspendDoWork(pVM);
1271
1272	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2,
1273	VMSTATE_SUSPENDED, VMSTATE_SUSPENDING,
1274	VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS);
1275	if (RT_FAILURE(rc))
1276	return VERR_INTERNAL_ERROR_3;
1277	}
1278
1279	return VINF_EM_SUSPEND;
1280	}
1281
1282
1283	/**
1284	* Suspends a running VM.
1285	*
1286	* @returns VBox status code. When called on EMT, this will be a strict status
1287	* code that has to be propagated up the call stack.
1288	*
1289	* @param pVM The VM to suspend.
1290	*
1291	* @thread Any thread.
1292	* @vmstate Running or RunningLS
1293	* @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS
1294	*/
1295	VMMR3DECL(int) VMR3Suspend(PVM pVM)
1296	{
1297	LogFlow(("VMR3Suspend: pVM=%p\n", pVM));
1298	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1299
1300	/*
1301	* Gather all the EMTs to make sure there are no races before
1302	* changing the VM state.
1303	*/
1304	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1305	vmR3Suspend, NULL);
1306	LogFlow(("VMR3Suspend: returns %Rrc\n", rc));
1307	return rc;
1308	}
1309
1310
1311	/**
1312	* EMT rendezvous worker for VMR3Resume.
1313	*
1314	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1315	* return code, see FNVMMEMTRENDEZVOUS.)
1316	*
1317	* @param pVM The VM handle.
1318	* @param pVCpu The VMCPU handle of the EMT.
1319	* @param pvUser Ignored.
1320	*/
1321	static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser)
1322	{
1323	LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1324	Assert(!pvUser); NOREF(pvUser);
1325
1326	/*
1327	* The first thread thru here tries to change the state. We shouldn't be
1328	* called again if this fails.
1329	*/
1330	if (pVCpu->idCpu == pVM->cCpus - 1)
1331	{
1332	int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED);
1333	if (RT_FAILURE(rc))
1334	return rc;
1335	}
1336
1337	VMSTATE enmVMState = VMR3GetState(pVM);
1338	AssertMsgReturn(enmVMState == VMSTATE_RESUMING,
1339	("%s\n", VMR3GetStateName(enmVMState)),
1340	VERR_INTERNAL_ERROR_4);
1341
1342	#if 0
1343	/*
1344	* All EMTs changes their state to started.
1345	*/
1346	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED);
1347	#endif
1348
1349	/*
1350	* EMT(0) is last thru here and it will make the notification calls
1351	* and advance the state.
1352	*/
1353	if (pVCpu->idCpu == 0)
1354	{
1355	PDMR3Resume(pVM);
1356	vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING);
1357	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1358	}
1359
1360	return VINF_EM_RESUME;
1361	}
1362
1363
1364	/**
1365	* Resume VM execution.
1366	*
1367	* @returns VBox status code. When called on EMT, this will be a strict status
1368	* code that has to be propagated up the call stack.
1369	*
1370	* @param pVM The VM to resume.
1371	*
1372	* @thread Any thread.
1373	* @vmstate Suspended
1374	* @vmstateto Running
1375	*/
1376	VMMR3DECL(int) VMR3Resume(PVM pVM)
1377	{
1378	LogFlow(("VMR3Resume: pVM=%p\n", pVM));
1379	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1380
1381	/*
1382	* Gather all the EMTs to make sure there are no races before
1383	* changing the VM state.
1384	*/
1385	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1386	vmR3Resume, NULL);
1387	LogFlow(("VMR3Resume: returns %Rrc\n", rc));
1388	return rc;
1389	}
1390
1391
1392	/**
1393	* EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM
1394	* after the live step has been completed.
1395	*
1396	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict
1397	* return code, see FNVMMEMTRENDEZVOUS.)
1398	*
1399	* @param pVM The VM handle.
1400	* @param pVCpu The VMCPU handle of the EMT.
1401	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1402	*/
1403	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser)
1404	{
1405	LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1406	bool pfSuspended = (bool )pvUser;
1407
1408	/*
1409	* The first thread thru here tries to change the state. We shouldn't be
1410	* called again if this fails.
1411	*/
1412	if (pVCpu->idCpu == pVM->cCpus - 1U)
1413	{
1414	PUVM pUVM = pVM->pUVM;
1415	int rc;
1416
1417	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
1418	VMSTATE enmVMState = pVM->enmVMState;
1419	switch (enmVMState)
1420	{
1421	case VMSTATE_RUNNING_LS:
1422	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS);
1423	rc = VINF_SUCCESS;
1424	break;
1425
1426	case VMSTATE_SUSPENDED_EXT_LS:
1427	case VMSTATE_SUSPENDED_LS: /* (via reset) */
1428	rc = VINF_SUCCESS;
1429	break;
1430
1431	case VMSTATE_DEBUGGING_LS:
1432	rc = VERR_TRY_AGAIN;
1433	break;
1434
1435	case VMSTATE_OFF_LS:
1436	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS);
1437	rc = VERR_SSM_LIVE_POWERED_OFF;
1438	break;
1439
1440	case VMSTATE_FATAL_ERROR_LS:
1441	vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS);
1442	rc = VERR_SSM_LIVE_FATAL_ERROR;
1443	break;
1444
1445	case VMSTATE_GURU_MEDITATION_LS:
1446	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS);
1447	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1448	break;
1449
1450	case VMSTATE_POWERING_OFF_LS:
1451	case VMSTATE_SUSPENDING_EXT_LS:
1452	case VMSTATE_RESETTING_LS:
1453	default:
1454	AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState)));
1455	rc = VERR_INTERNAL_ERROR_3;
1456	break;
1457	}
1458	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
1459	if (RT_FAILURE(rc))
1460	{
1461	LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState)));
1462	return rc;
1463	}
1464	}
1465
1466	VMSTATE enmVMState = VMR3GetState(pVM);
1467	AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS,
1468	("%s\n", VMR3GetStateName(enmVMState)),
1469	VERR_INTERNAL_ERROR_4);
1470
1471	/*
1472	* Only EMT(0) have work to do since it's last thru here.
1473	*/
1474	if (pVCpu->idCpu == 0)
1475	{
1476	vmR3SuspendDoWork(pVM);
1477	int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1,
1478	VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
1479	if (RT_FAILURE(rc))
1480	return VERR_INTERNAL_ERROR_3;
1481
1482	*pfSuspended = true;
1483	}
1484
1485	return VINF_EM_SUSPEND;
1486	}
1487
1488
1489	/**
1490	* EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a
1491	* SSMR3LiveDoStep1 failure.
1492	*
1493	* Doing this as a rendezvous operation avoids all annoying transition
1494	* states.
1495	*
1496	* @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_*
1497	* status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.)
1498	*
1499	* @param pVM The VM handle.
1500	* @param pVCpu The VMCPU handle of the EMT.
1501	* @param pvUser The pfSuspended argument of vmR3SaveTeleport.
1502	*/
1503	static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser)
1504	{
1505	LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1506	bool pfSuspended = (bool )pvUser;
1507	NOREF(pVCpu);
1508
1509	int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 8,
1510	VMSTATE_OFF, VMSTATE_OFF_LS, /* 1 */
1511	VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, /* 2 */
1512	VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, /* 3 */
1513	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_LS, /* 4 */
1514	VMSTATE_SUSPENDED, VMSTATE_SAVING,
1515	VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS,
1516	VMSTATE_RUNNING, VMSTATE_RUNNING_LS,
1517	VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS);
1518	if (rc == 1)
1519	rc = VERR_SSM_LIVE_POWERED_OFF;
1520	else if (rc == 2)
1521	rc = VERR_SSM_LIVE_FATAL_ERROR;
1522	else if (rc == 3)
1523	rc = VERR_SSM_LIVE_GURU_MEDITATION;
1524	else if (rc == 4)
1525	{
1526	*pfSuspended = true;
1527	rc = VINF_SUCCESS;
1528	}
1529	else if (rc > 0)
1530	rc = VINF_SUCCESS;
1531	return rc;
1532	}
1533
1534
1535	/**
1536	* EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save.
1537	*
1538	* @returns VBox status code.
1539	* @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called.
1540	*
1541	* @param pVM The VM handle.
1542	* @param pSSM The handle of saved state operation.
1543	*
1544	* @thread EMT(0)
1545	*/
1546	static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM)
1547	{
1548	LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM));
1549	VM_ASSERT_EMT0(pVM);
1550
1551	/*
1552	* Advance the state and mark if VMR3Suspend was called.
1553	*/
1554	int rc = VINF_SUCCESS;
1555	VMSTATE enmVMState = VMR3GetState(pVM);
1556	if (enmVMState == VMSTATE_SUSPENDED_LS)
1557	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS);
1558	else
1559	{
1560	if (enmVMState != VMSTATE_SAVING)
1561	vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS);
1562	rc = VINF_SSM_LIVE_SUSPENDED;
1563	}
1564
1565	/*
1566	* Finish up and release the handle. Careful with the status codes.
1567	*/
1568	int rc2 = SSMR3LiveDoStep2(pSSM);
1569	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1570	rc = rc2;
1571
1572	rc2 = SSMR3LiveDone(pSSM);
1573	if (rc == VINF_SUCCESS \|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc)))
1574	rc = rc2;
1575
1576	/*
1577	* Advance to the final state and return.
1578	*/
1579	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1580	Assert(rc > VINF_EM_LAST \|\| rc < VINF_EM_FIRST);
1581	return rc;
1582	}
1583
1584
1585	/**
1586	* Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or
1587	* SSMR3LiveSave.
1588	*
1589	* @returns VBox status code.
1590	*
1591	* @param pVM The VM handle.
1592	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1593	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1594	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1595	* @param pvStreamOpsUser The user argument to the stream methods.
1596	* @param enmAfter What to do afterwards.
1597	* @param pfnProgress Progress callback. Optional.
1598	* @param pvProgressUser User argument for the progress callback.
1599	* @param ppSSM Where to return the saved state handle in case of a
1600	* live snapshot scenario.
1601	* @thread EMT
1602	*/
1603	static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1604	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, PSSMHANDLE ppSSM)
1605	{
1606	LogFlow(("vmR3Save: pVM=%p cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p ppSSM=%p\n",
1607	pVM, cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM));
1608
1609	/*
1610	* Validate input.
1611	*/
1612	AssertPtrNull(pszFilename);
1613	AssertPtrNull(pStreamOps);
1614	AssertPtr(pVM);
1615	Assert( enmAfter == SSMAFTER_DESTROY
1616	\|\| enmAfter == SSMAFTER_CONTINUE
1617	\|\| enmAfter == SSMAFTER_TELEPORT);
1618	AssertPtr(ppSSM);
1619	*ppSSM = NULL;
1620
1621	/*
1622	* Change the state and perform/start the saving.
1623	*/
1624	int rc = vmR3TrySetState(pVM, "VMR3Save", 2,
1625	VMSTATE_SAVING, VMSTATE_SUSPENDED,
1626	VMSTATE_RUNNING_LS, VMSTATE_RUNNING);
1627	if (rc == 1 && enmAfter != SSMAFTER_TELEPORT)
1628	{
1629	Assert(!pStreamOps);
1630	rc = SSMR3Save(pVM, pszFilename, enmAfter, pfnProgress, pvProgressUser);
1631	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING);
1632	}
1633	else if (rc == 2 \|\| enmAfter == SSMAFTER_TELEPORT)
1634	{
1635	if (enmAfter == SSMAFTER_TELEPORT)
1636	pVM->vm.s.fTeleportedAndNotFullyResumedYet = true;
1637	rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1638	enmAfter, pfnProgress, pvProgressUser, ppSSM);
1639	/* (We're not subject to cancellation just yet.) */
1640	}
1641	else
1642	Assert(RT_FAILURE(rc));
1643	return rc;
1644	}
1645
1646
1647	/**
1648	* Commmon worker for VMR3Save and VMR3Teleport.
1649	*
1650	* @returns VBox status code.
1651	*
1652	* @param pVM The VM handle.
1653	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1654	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1655	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1656	* @param pvStreamOpsUser The user argument to the stream methods.
1657	* @param enmAfter What to do afterwards.
1658	* @param pfnProgress Progress callback. Optional.
1659	* @param pvProgressUser User argument for the progress callback.
1660	* @param pfSuspended Set if we suspended the VM.
1661	*
1662	* @thread Non-EMT
1663	*/
1664	static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime,
1665	const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1666	SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1667	{
1668	/*
1669	* Request the operation in EMT(0).
1670	*/
1671	PSSMHANDLE pSSM;
1672	int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/,
1673	(PFNRT)vmR3Save, 9, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser,
1674	enmAfter, pfnProgress, pvProgressUser, &pSSM);
1675	if ( RT_SUCCESS(rc)
1676	&& pSSM)
1677	{
1678	/*
1679	* Live snapshot.
1680	*
1681	* The state handling here is kind of tricky, doing it on EMT(0) helps
1682	* a bit. See the VMSTATE diagram for details.
1683	*/
1684	rc = SSMR3LiveDoStep1(pSSM);
1685	if (RT_SUCCESS(rc))
1686	{
1687	if (VMR3GetState(pVM) != VMSTATE_SAVING)
1688	for (;;)
1689	{
1690	/* Try suspend the VM. */
1691	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
1692	vmR3LiveDoSuspend, pfSuspended);
1693	if (rc != VERR_TRY_AGAIN)
1694	break;
1695
1696	/* Wait for the state to change. */
1697	RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */
1698	}
1699	if (RT_SUCCESS(rc))
1700	rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM);
1701	else
1702	{
1703	int rc2 = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1704	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1705	}
1706	}
1707	else
1708	{
1709	int rc2 = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)SSMR3LiveDone, 1, pSSM);
1710	AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc));
1711
1712	rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, pfSuspended);
1713	if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED)
1714	rc = rc2;
1715	}
1716	}
1717
1718	return rc;
1719	}
1720
1721
1722	/**
1723	* Save current VM state.
1724	*
1725	* Can be used for both saving the state and creating snapshots.
1726	*
1727	* When called for a VM in the Running state, the saved state is created live
1728	* and the VM is only suspended when the final part of the saving is preformed.
1729	* The VM state will not be restored to Running in this case and it's up to the
1730	* caller to call VMR3Resume if this is desirable. (The rational is that the
1731	* caller probably wish to reconfigure the disks before resuming the VM.)
1732	*
1733	* @returns VBox status code.
1734	*
1735	* @param pVM The VM which state should be saved.
1736	* @param pszFilename The name of the save state file.
1737	* @param fContinueAfterwards Whether continue execution afterwards or not.
1738	* When in doubt, set this to true.
1739	* @param pfnProgress Progress callback. Optional.
1740	* @param pvUser User argument for the progress callback.
1741	* @param pfSuspended Set if we suspended the VM.
1742	*
1743	* @thread Non-EMT.
1744	* @vmstate Suspended or Running
1745	* @vmstateto Saving+Suspended or
1746	* RunningLS+SuspeningLS+SuspendedLS+Saving+Suspended.
1747	*/
1748	VMMR3DECL(int) VMR3Save(PVM pVM, const char *pszFilename, bool fContinueAfterwards,
1749	PFNVMPROGRESS pfnProgress, void pvUser, bool pfSuspended)
1750	{
1751	LogFlow(("VMR3Save: pVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p pfSuspended=%p\n",
1752	pVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser, pfSuspended));
1753
1754	/*
1755	* Validate input.
1756	*/
1757	AssertPtr(pfSuspended);
1758	*pfSuspended = false;
1759	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1760	VM_ASSERT_OTHER_THREAD(pVM);
1761	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1762	AssertReturn(*pszFilename, VERR_INVALID_PARAMETER);
1763	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1764
1765	/*
1766	* Join paths with VMR3Teleport.
1767	*/
1768	SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY;
1769	int rc = vmR3SaveTeleport(pVM, 250 /cMsMaxDowntime/,
1770	pszFilename, NULL /pStreamOps/, NULL /pvStreamOpsUser/,
1771	enmAfter, pfnProgress, pvUser, pfSuspended);
1772	LogFlow(("VMR3Save: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1773	return rc;
1774	}
1775
1776
1777	/**
1778	* Teleport the VM (aka live migration).
1779	*
1780	* @returns VBox status code.
1781	*
1782	* @param pVM The VM which state should be saved.
1783	* @param cMsMaxDowntime The maximum downtime given as milliseconds.
1784	* @param pStreamOps The stream methods.
1785	* @param pvStreamOpsUser The user argument to the stream methods.
1786	* @param pfnProgress Progress callback. Optional.
1787	* @param pvProgressUser User argument for the progress callback.
1788	* @param pfSuspended Set if we suspended the VM.
1789	*
1790	* @thread Non-EMT.
1791	* @vmstate Suspended or Running
1792	* @vmstateto Saving+Suspended or
1793	* RunningLS+SuspeningLS+SuspendedLS+Saving+Suspended.
1794	*/
1795	VMMR3DECL(int) VMR3Teleport(PVM pVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1796	PFNVMPROGRESS pfnProgress, void pvProgressUser, bool pfSuspended)
1797	{
1798	LogFlow(("VMR3Teleport: pVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n",
1799	pVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1800
1801	/*
1802	* Validate input.
1803	*/
1804	AssertPtr(pfSuspended);
1805	*pfSuspended = false;
1806	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1807	VM_ASSERT_OTHER_THREAD(pVM);
1808	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1809	AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER);
1810
1811	/*
1812	* Join paths with VMR3Save.
1813	*/
1814	int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime,
1815	NULL /pszFilename/, pStreamOps, pvStreamOpsUser,
1816	SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended);
1817	LogFlow(("VMR3Teleport: returns %Rrc (pfSuspended=%RTbool)\n", rc, pfSuspended));
1818	return rc;
1819	}
1820
1821
1822
1823	/**
1824	* EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream.
1825	*
1826	* @returns VBox status code.
1827	*
1828	* @param pVM The VM handle.
1829	* @param pszFilename The name of the file. NULL if pStreamOps is used.
1830	* @param pStreamOps The stream methods. NULL if pszFilename is used.
1831	* @param pvStreamOpsUser The user argument to the stream methods.
1832	* @param pfnProgress Progress callback. Optional.
1833	* @param pvUser User argument for the progress callback.
1834	* @param fTeleporting Indicates whether we're teleporting or not.
1835	*
1836	* @thread EMT.
1837	*/
1838	static DECLCALLBACK(int) vmR3Load(PVM pVM, const char pszFilename, PCSSMSTRMOPS pStreamOps, void pvStreamOpsUser,
1839	PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting)
1840	{
1841	LogFlow(("vmR3Load: pVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n",
1842	pVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting));
1843
1844	/*
1845	* Validate input (paranoia).
1846	*/
1847	AssertPtr(pVM);
1848	AssertPtrNull(pszFilename);
1849	AssertPtrNull(pStreamOps);
1850	AssertPtrNull(pfnProgress);
1851
1852	/*
1853	* Change the state and perform the load.
1854	*
1855	* Always perform a relocation round afterwards to make sure hypervisor
1856	* selectors and such are correct.
1857	*/
1858	int rc = vmR3TrySetState(pVM, "VMR3Load", 2,
1859	VMSTATE_LOADING, VMSTATE_CREATED,
1860	VMSTATE_LOADING, VMSTATE_SUSPENDED);
1861	if (RT_FAILURE(rc))
1862	return rc;
1863	pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting;
1864
1865	uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pVM);
1866	rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser);
1867	if (RT_SUCCESS(rc))
1868	{
1869	VMR3Relocate(pVM, 0 /offDelta/);
1870	vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING);
1871	}
1872	else
1873	{
1874	pVM->vm.s.fTeleportedAndNotFullyResumedYet = false;
1875	vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING);
1876	if (cErrorsPriorToSave == VMR3GetErrorCount(pVM))
1877	rc = VMSetError(pVM, rc, RT_SRC_POS,
1878	N_("Unable to restore the virtual machine's saved state from '%s'. "
1879	"It may be damaged or from an older version of VirtualBox. "
1880	"Please discard the saved state before starting the virtual machine"),
1881	pszFilename);
1882	}
1883
1884	return rc;
1885	}
1886
1887
1888	/**
1889	* Loads a VM state into a newly created VM or a one that is suspended.
1890	*
1891	* To restore a saved state on VM startup, call this function and then resume
1892	* the VM instead of powering it on.
1893	*
1894	* @returns VBox status code.
1895	*
1896	* @param pVM The VM handle.
1897	* @param pszFilename The name of the save state file.
1898	* @param pfnProgress Progress callback. Optional.
1899	* @param pvUser User argument for the progress callback.
1900	*
1901	* @thread Any thread.
1902	* @vmstate Created, Suspended
1903	* @vmstateto Loading+Suspended
1904	*/
1905	VMMR3DECL(int) VMR3LoadFromFile(PVM pVM, const char pszFilename, PFNVMPROGRESS pfnProgress, void pvUser)
1906	{
1907	LogFlow(("VMR3LoadFromFile: pVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n",
1908	pVM, pszFilename, pszFilename, pfnProgress, pvUser));
1909
1910	/*
1911	* Validate input.
1912	*/
1913	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1914	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
1915
1916	/*
1917	* Forward the request to EMT(0). No need to setup a rendezvous here
1918	* since there is no execution taking place when this call is allowed.
1919	*/
1920	int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1921	pVM, pszFilename, (uintptr_t)NULL /pStreamOps/, (uintptr_t)NULL /pvStreamOpsUser/, pfnProgress, pvUser,
1922	false /fTeleporting/);
1923	LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc));
1924	return rc;
1925	}
1926
1927
1928	/**
1929	* VMR3LoadFromFile for arbritrary file streams.
1930	*
1931	* @returns VBox status code.
1932	*
1933	* @param pVM The VM handle.
1934	* @param pStreamOps The stream methods.
1935	* @param pvStreamOpsUser The user argument to the stream methods.
1936	* @param pfnProgress Progress callback. Optional.
1937	* @param pvProgressUser User argument for the progress callback.
1938	*
1939	* @thread Any thread.
1940	* @vmstate Created, Suspended
1941	* @vmstateto Loading+Suspended
1942	*/
1943	VMMR3DECL(int) VMR3LoadFromStream(PVM pVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser,
1944	PFNVMPROGRESS pfnProgress, void *pvProgressUser)
1945	{
1946	LogFlow(("VMR3LoadFromStream: pVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p\n",
1947	pVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser));
1948
1949	/*
1950	* Validate input.
1951	*/
1952	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
1953	AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER);
1954
1955	/*
1956	* Forward the request to EMT(0). No need to setup a rendezvous here
1957	* since there is no execution taking place when this call is allowed.
1958	*/
1959	int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /idDstCpu/, (PFNRT)vmR3Load, 7,
1960	pVM, (uintptr_t)NULL /pszFilename/, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser,
1961	true /fTeleporting/);
1962	LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc));
1963	return rc;
1964	}
1965
1966
1967	/**
1968	* EMT rendezvous worker for VMR3PowerOff.
1969	*
1970	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict
1971	* return code, see FNVMMEMTRENDEZVOUS.)
1972	*
1973	* @param pVM The VM handle.
1974	* @param pVCpu The VMCPU handle of the EMT.
1975	* @param pvUser Ignored.
1976	*/
1977	static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser)
1978	{
1979	LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu));
1980	Assert(!pvUser); NOREF(pvUser);
1981
1982	/*
1983	* The first EMT thru here will change the state to PoweringOff.
1984	*/
1985	if (pVCpu->idCpu == pVM->cCpus - 1)
1986	{
1987	int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 11,
1988	VMSTATE_POWERING_OFF, VMSTATE_RUNNING, /* 1 */
1989	VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, /* 2 */
1990	VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, /* 3 */
1991	VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, /* 4 */
1992	VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, /* 5 */
1993	VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, /* 6 */
1994	VMSTATE_POWERING_OFF, VMSTATE_CREATED, /* 7 / /* @todo update the diagram! */
1995	VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, /* 8 */
1996	VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, /* 9 */
1997	VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS,/* 10 */
1998	VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); /* 11 */
1999	if (RT_FAILURE(rc))
2000	return rc;
2001	if (rc >= 7)
2002	SSMR3Cancel(pVM);
2003	}
2004
2005	/*
2006	* Check the state.
2007	*/
2008	VMSTATE enmVMState = VMR3GetState(pVM);
2009	AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF
2010	\|\| enmVMState == VMSTATE_POWERING_OFF_LS,
2011	("%s\n", VMR3GetStateName(enmVMState)),
2012	VERR_VM_INVALID_VM_STATE);
2013
2014	/*
2015	* EMT(0) does the actual power off work here after all the other EMTs
2016	* have been thru and entered the STOPPED state.
2017	*/
2018	VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED);
2019	if (pVCpu->idCpu == 0)
2020	{
2021	/*
2022	* For debugging purposes, we will log a summary of the guest state at this point.
2023	*/
2024	if (enmVMState != VMSTATE_GURU_MEDITATION)
2025	{
2026	/** @todo SMP support? */
2027	/** @todo make the state dumping at VMR3PowerOff optional. */
2028	RTLogRelPrintf("**************** Guest state at power off ****************\n");
2029	DBGFR3Info(pVM, "cpumguest", "verbose", DBGFR3InfoLogRelHlp());
2030	RTLogRelPrintf("***\n");
2031	DBGFR3Info(pVM, "mode", NULL, DBGFR3InfoLogRelHlp());
2032	RTLogRelPrintf("***\n");
2033	DBGFR3Info(pVM, "activetimers", NULL, DBGFR3InfoLogRelHlp());
2034	RTLogRelPrintf("***\n");
2035	DBGFR3Info(pVM, "gdt", NULL, DBGFR3InfoLogRelHlp());
2036	/** @todo dump guest call stack. */
2037	#if 1 // "temporary" while debugging #1589
2038	RTLogRelPrintf("***\n");
2039	uint32_t esp = CPUMGetGuestESP(pVCpu);
2040	if ( CPUMGetGuestSS(pVCpu) == 0
2041	&& esp < _64K)
2042	{
2043	uint8_t abBuf[PAGE_SIZE];
2044	RTLogRelPrintf("***\n"
2045	"ss:sp=0000:%04x ", esp);
2046	uint32_t Start = esp & ~(uint32_t)63;
2047	int rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, Start, 0x100);
2048	if (RT_SUCCESS(rc))
2049	RTLogRelPrintf("0000:%04x TO 0000:%04x:\n"
2050	"%.*Rhxd\n",
2051	Start, Start + 0x100 - 1,
2052	0x100, abBuf);
2053	else
2054	RTLogRelPrintf("rc=%Rrc\n", rc);
2055
2056	/* grub ... */
2057	if (esp < 0x2000 && esp > 0x1fc0)
2058	{
2059	rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, 0x8000, 0x800);
2060	if (RT_SUCCESS(rc))
2061	RTLogRelPrintf("0000:8000 TO 0000:87ff:\n"
2062	"%.*Rhxd\n",
2063	0x800, abBuf);
2064	}
2065	/* microsoft cdrom hang ... */
2066	if (true)
2067	{
2068	rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, 0x8000, 0x200);
2069	if (RT_SUCCESS(rc))
2070	RTLogRelPrintf("2000:0000 TO 2000:01ff:\n"
2071	"%.*Rhxd\n",
2072	0x200, abBuf);
2073	}
2074	}
2075	#endif
2076	RTLogRelPrintf("************ End of Guest state at power off *************\n");
2077	}
2078
2079	/*
2080	* Perform the power off notifications and advance the state to
2081	* Off or OffLS.
2082	*/
2083	PDMR3PowerOff(pVM);
2084
2085	PUVM pUVM = pVM->pUVM;
2086	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2087	enmVMState = pVM->enmVMState;
2088	if (enmVMState == VMSTATE_POWERING_OFF_LS)
2089	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS);
2090	else
2091	vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF);
2092	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2093	}
2094	return VINF_EM_OFF;
2095	}
2096
2097
2098	/**
2099	* Power off the VM.
2100	*
2101	* @returns VBox status code. When called on EMT, this will be a strict status
2102	* code that has to be propagated up the call stack.
2103	*
2104	* @param pVM The handle of the VM to be powered off.
2105	*
2106	* @thread Any thread.
2107	* @vmstate Suspended, Running, Guru Meditation, Load Failure
2108	* @vmstateto Off or OffLS
2109	*/
2110	VMMR3DECL(int) VMR3PowerOff(PVM pVM)
2111	{
2112	LogFlow(("VMR3PowerOff: pVM=%p\n", pVM));
2113	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2114
2115	/*
2116	* Gather all the EMTs to make sure there are no races before
2117	* changing the VM state.
2118	*/
2119	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2120	vmR3PowerOff, NULL);
2121	LogFlow(("VMR3PowerOff: returns %Rrc\n", rc));
2122	return rc;
2123	}
2124
2125
2126	/**
2127	* Destroys the VM.
2128	*
2129	* The VM must be powered off (or never really powered on) to call this
2130	* function. The VM handle is destroyed and can no longer be used up successful
2131	* return.
2132	*
2133	* @returns VBox status code.
2134	*
2135	* @param pVM The handle of the VM which should be destroyed.
2136	*
2137	* @thread Any none emulation thread.
2138	* @vmstate Off, Created
2139	* @vmstateto N/A
2140	*/
2141	VMMR3DECL(int) VMR3Destroy(PVM pVM)
2142	{
2143	LogFlow(("VMR3Destroy: pVM=%p\n", pVM));
2144
2145	/*
2146	* Validate input.
2147	*/
2148	if (!pVM)
2149	return VERR_INVALID_PARAMETER;
2150	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2151	AssertLogRelReturn(!VM_IS_EMT(pVM), VERR_VM_THREAD_IS_EMT);
2152
2153	/*
2154	* Change VM state to destroying and unlink the VM.
2155	*/
2156	int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF);
2157	if (RT_FAILURE(rc))
2158	return rc;
2159
2160	/** @todo lock this when we start having multiple machines in a process... */
2161	PUVM pUVM = pVM->pUVM; AssertPtr(pUVM);
2162	if (g_pUVMsHead == pUVM)
2163	g_pUVMsHead = pUVM->pNext;
2164	else
2165	{
2166	PUVM pPrev = g_pUVMsHead;
2167	while (pPrev && pPrev->pNext != pUVM)
2168	pPrev = pPrev->pNext;
2169	AssertMsgReturn(pPrev, ("pUVM=%p / pVM=%p is INVALID!\n", pUVM, pVM), VERR_INVALID_PARAMETER);
2170
2171	pPrev->pNext = pUVM->pNext;
2172	}
2173	pUVM->pNext = NULL;
2174
2175	/*
2176	* Notify registered at destruction listeners.
2177	*/
2178	vmR3AtDtor(pVM);
2179
2180	/*
2181	* Call vmR3Destroy on each of the EMTs ending with EMT(0) doing the bulk
2182	* of the cleanup.
2183	*/
2184	/* vmR3Destroy on all EMTs, ending with EMT(0). */
2185	rc = VMR3ReqCallWaitU(pUVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM);
2186	AssertLogRelRC(rc);
2187
2188	/* Wait for EMTs and destroy the UVM. */
2189	vmR3DestroyUVM(pUVM, 30000);
2190
2191	LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n"));
2192	return VINF_SUCCESS;
2193	}
2194
2195
2196	/**
2197	* Internal destruction worker.
2198	*
2199	* This is either called from VMR3Destroy via VMR3ReqCallU or from
2200	* vmR3EmulationThreadWithId when EMT(0) terminates after having called
2201	* VMR3Destroy().
2202	*
2203	* When called on EMT(0), it will performed the great bulk of the destruction.
2204	* When called on the other EMTs, they will do nothing and the whole purpose is
2205	* to return VINF_EM_TERMINATE so they break out of their run loops.
2206	*
2207	* @returns VINF_EM_TERMINATE.
2208	* @param pVM The VM handle.
2209	*/
2210	DECLCALLBACK(int) vmR3Destroy(PVM pVM)
2211	{
2212	PUVM pUVM = pVM->pUVM;
2213	PVMCPU pVCpu = VMMGetCpu(pVM);
2214	Assert(pVCpu);
2215	LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu));
2216
2217	/*
2218	* Only VCPU 0 does the full cleanup (last).
2219	*/
2220	if (pVCpu->idCpu == 0)
2221	{
2222	/*
2223	* Dump statistics to the log.
2224	*/
2225	#if defined(VBOX_WITH_STATISTICS) \|\| defined(LOG_ENABLED)
2226	RTLogFlags(NULL, "nodisabled nobuffered");
2227	#endif
2228	#ifdef VBOX_WITH_STATISTICS
2229	STAMR3Dump(pVM, "*");
2230	#else
2231	LogRel(("*********************** Statistics ***********************\n"));
2232	STAMR3DumpToReleaseLog(pVM, "*");
2233	LogRel(("******************* End of statistics ********************\n"));
2234	#endif
2235
2236	/*
2237	* Destroy the VM components.
2238	*/
2239	int rc = TMR3Term(pVM);
2240	AssertRC(rc);
2241	#ifdef VBOX_WITH_DEBUGGER
2242	rc = DBGCTcpTerminate(pVM, pUVM->vm.s.pvDBGC);
2243	pUVM->vm.s.pvDBGC = NULL;
2244	#endif
2245	AssertRC(rc);
2246	rc = DBGFR3Term(pVM);
2247	AssertRC(rc);
2248	rc = PDMR3Term(pVM);
2249	AssertRC(rc);
2250	rc = EMR3Term(pVM);
2251	AssertRC(rc);
2252	rc = IOMR3Term(pVM);
2253	AssertRC(rc);
2254	rc = CSAMR3Term(pVM);
2255	AssertRC(rc);
2256	rc = PATMR3Term(pVM);
2257	AssertRC(rc);
2258	rc = TRPMR3Term(pVM);
2259	AssertRC(rc);
2260	rc = SELMR3Term(pVM);
2261	AssertRC(rc);
2262	rc = REMR3Term(pVM);
2263	AssertRC(rc);
2264	rc = HWACCMR3Term(pVM);
2265	AssertRC(rc);
2266	rc = PGMR3Term(pVM);
2267	AssertRC(rc);
2268	rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */
2269	AssertRC(rc);
2270	rc = CPUMR3Term(pVM);
2271	AssertRC(rc);
2272	SSMR3Term(pVM);
2273	rc = PDMR3CritSectTerm(pVM);
2274	AssertRC(rc);
2275	rc = MMR3Term(pVM);
2276	AssertRC(rc);
2277
2278	/*
2279	* We're done, tell the other EMTs to quit.
2280	*/
2281	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2282	ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2283	LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE));
2284	}
2285	return VINF_EM_TERMINATE;
2286	}
2287
2288
2289	/**
2290	* Destroys the UVM portion.
2291	*
2292	* This is called as the final step in the VM destruction or as the cleanup
2293	* in case of a creation failure.
2294	*
2295	* @param pVM VM Handle.
2296	* @param cMilliesEMTWait The number of milliseconds to wait for the emulation
2297	* threads.
2298	*/
2299	static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait)
2300	{
2301	/*
2302	* Signal termination of each the emulation threads and
2303	* wait for them to complete.
2304	*/
2305	/* Signal them. */
2306	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2307	if (pUVM->pVM)
2308	VM_FF_SET(pUVM->pVM, VM_FF_CHECK_VM_STATE); /* Can't hurt... */
2309	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
2310	{
2311	VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
2312	RTSemEventSignal(pUVM->aCpus[i].vm.s.EventSemWait);
2313	}
2314
2315	/* Wait for them. */
2316	uint64_t NanoTS = RTTimeNanoTS();
2317	RTTHREAD hSelf = RTThreadSelf();
2318	ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true);
2319	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
2320	{
2321	RTTHREAD hThread = pUVM->aCpus[i].vm.s.ThreadEMT;
2322	if ( hThread != NIL_RTTHREAD
2323	&& hThread != hSelf)
2324	{
2325	uint64_t cMilliesElapsed = (RTTimeNanoTS() - NanoTS) / 1000000;
2326	int rc2 = RTThreadWait(hThread,
2327	cMilliesElapsed < cMilliesEMTWait
2328	? RT_MAX(cMilliesEMTWait - cMilliesElapsed, 2000)
2329	: 2000,
2330	NULL);
2331	if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */
2332	rc2 = RTThreadWait(hThread, 1000, NULL);
2333	AssertLogRelMsgRC(rc2, ("i=%u rc=%Rrc\n", i, rc2));
2334	if (RT_SUCCESS(rc2))
2335	pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD;
2336	}
2337	}
2338
2339	/* Cleanup the semaphores. */
2340	for (VMCPUID i = 0; i < pUVM->cCpus; i++)
2341	{
2342	RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait);
2343	pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT;
2344	}
2345
2346	/*
2347	* Free the event semaphores associated with the request packets.
2348	*/
2349	unsigned cReqs = 0;
2350	for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++)
2351	{
2352	PVMREQ pReq = pUVM->vm.s.apReqFree[i];
2353	pUVM->vm.s.apReqFree[i] = NULL;
2354	for (; pReq; pReq = pReq->pNext, cReqs++)
2355	{
2356	pReq->enmState = VMREQSTATE_INVALID;
2357	RTSemEventDestroy(pReq->EventSem);
2358	}
2359	}
2360	Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs);
2361
2362	/*
2363	* Kill all queued requests. (There really shouldn't be any!)
2364	*/
2365	for (unsigned i = 0; i < 10; i++)
2366	{
2367	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVM->vm.s.pReqs, NULL, PVMREQ);
2368	AssertMsg(!pReqHead, ("This isn't supposed to happen! VMR3Destroy caller has to serialize this.\n"));
2369	if (!pReqHead)
2370	break;
2371	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2372	{
2373	ASMAtomicUoWriteSize(&pReq->iStatus, VERR_INTERNAL_ERROR);
2374	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2375	RTSemEventSignal(pReq->EventSem);
2376	RTThreadSleep(2);
2377	RTSemEventDestroy(pReq->EventSem);
2378	}
2379	/* give them a chance to respond before we free the request memory. */
2380	RTThreadSleep(32);
2381	}
2382
2383	/*
2384	* Now all queued VCPU requests (again, there shouldn't be any).
2385	*/
2386	for (VMCPUID idCpu = 0; idCpu < pUVM->cCpus; idCpu++)
2387	{
2388	PUVMCPU pUVCpu = &pUVM->aCpus[idCpu];
2389
2390	for (unsigned i = 0; i < 10; i++)
2391	{
2392	PVMREQ pReqHead = ASMAtomicXchgPtrT(&pUVCpu->vm.s.pReqs, NULL, PVMREQ);
2393	AssertMsg(!pReqHead, ("This isn't supposed to happen! VMR3Destroy caller has to serialize this.\n"));
2394	if (!pReqHead)
2395	break;
2396	for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext)
2397	{
2398	ASMAtomicUoWriteSize(&pReq->iStatus, VERR_INTERNAL_ERROR);
2399	ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID);
2400	RTSemEventSignal(pReq->EventSem);
2401	RTThreadSleep(2);
2402	RTSemEventDestroy(pReq->EventSem);
2403	}
2404	/* give them a chance to respond before we free the request memory. */
2405	RTThreadSleep(32);
2406	}
2407	}
2408
2409	/*
2410	* Make sure the VMMR0.r0 module and whatever else is unloaded.
2411	*/
2412	PDMR3TermUVM(pUVM);
2413
2414	/*
2415	* Terminate the support library if initialized.
2416	*/
2417	if (pUVM->vm.s.pSession)
2418	{
2419	int rc = SUPR3Term(false /fForced/);
2420	AssertRC(rc);
2421	pUVM->vm.s.pSession = NIL_RTR0PTR;
2422	}
2423
2424	/*
2425	* Destroy the MM heap and free the UVM structure.
2426	*/
2427	MMR3TermUVM(pUVM);
2428	STAMR3TermUVM(pUVM);
2429
2430	#ifdef LOG_ENABLED
2431	RTLogSetCustomPrefixCallback(NULL, NULL, NULL);
2432	#endif
2433	RTTlsFree(pUVM->vm.s.idxTLS);
2434
2435	ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX);
2436	RTMemPageFree(pUVM, sizeof(*pUVM));
2437
2438	RTLogFlush(NULL);
2439	}
2440
2441
2442	/**
2443	* Enumerates the VMs in this process.
2444	*
2445	* @returns Pointer to the next VM.
2446	* @returns NULL when no more VMs.
2447	* @param pVMPrev The previous VM
2448	* Use NULL to start the enumeration.
2449	*/
2450	VMMR3DECL(PVM) VMR3EnumVMs(PVM pVMPrev)
2451	{
2452	/*
2453	* This is quick and dirty. It has issues with VM being
2454	* destroyed during the enumeration.
2455	*/
2456	PUVM pNext;
2457	if (pVMPrev)
2458	pNext = pVMPrev->pUVM->pNext;
2459	else
2460	pNext = g_pUVMsHead;
2461	return pNext ? pNext->pVM : NULL;
2462	}
2463
2464
2465	/**
2466	* Registers an at VM destruction callback.
2467	*
2468	* @returns VBox status code.
2469	* @param pfnAtDtor Pointer to callback.
2470	* @param pvUser User argument.
2471	*/
2472	VMMR3DECL(int) VMR3AtDtorRegister(PFNVMATDTOR pfnAtDtor, void *pvUser)
2473	{
2474	/*
2475	* Check if already registered.
2476	*/
2477	VM_ATDTOR_LOCK();
2478	PVMATDTOR pCur = g_pVMAtDtorHead;
2479	while (pCur)
2480	{
2481	if (pfnAtDtor == pCur->pfnAtDtor)
2482	{
2483	VM_ATDTOR_UNLOCK();
2484	AssertMsgFailed(("Already registered at destruction callback %p!\n", pfnAtDtor));
2485	return VERR_INVALID_PARAMETER;
2486	}
2487
2488	/* next */
2489	pCur = pCur->pNext;
2490	}
2491	VM_ATDTOR_UNLOCK();
2492
2493	/*
2494	* Allocate new entry.
2495	*/
2496	PVMATDTOR pVMAtDtor = (PVMATDTOR)RTMemAlloc(sizeof(*pVMAtDtor));
2497	if (!pVMAtDtor)
2498	return VERR_NO_MEMORY;
2499
2500	VM_ATDTOR_LOCK();
2501	pVMAtDtor->pfnAtDtor = pfnAtDtor;
2502	pVMAtDtor->pvUser = pvUser;
2503	pVMAtDtor->pNext = g_pVMAtDtorHead;
2504	g_pVMAtDtorHead = pVMAtDtor;
2505	VM_ATDTOR_UNLOCK();
2506
2507	return VINF_SUCCESS;
2508	}
2509
2510
2511	/**
2512	* Deregisters an at VM destruction callback.
2513	*
2514	* @returns VBox status code.
2515	* @param pfnAtDtor Pointer to callback.
2516	*/
2517	VMMR3DECL(int) VMR3AtDtorDeregister(PFNVMATDTOR pfnAtDtor)
2518	{
2519	/*
2520	* Find it, unlink it and free it.
2521	*/
2522	VM_ATDTOR_LOCK();
2523	PVMATDTOR pPrev = NULL;
2524	PVMATDTOR pCur = g_pVMAtDtorHead;
2525	while (pCur)
2526	{
2527	if (pfnAtDtor == pCur->pfnAtDtor)
2528	{
2529	if (pPrev)
2530	pPrev->pNext = pCur->pNext;
2531	else
2532	g_pVMAtDtorHead = pCur->pNext;
2533	pCur->pNext = NULL;
2534	VM_ATDTOR_UNLOCK();
2535
2536	RTMemFree(pCur);
2537	return VINF_SUCCESS;
2538	}
2539
2540	/* next */
2541	pPrev = pCur;
2542	pCur = pCur->pNext;
2543	}
2544	VM_ATDTOR_UNLOCK();
2545
2546	return VERR_INVALID_PARAMETER;
2547	}
2548
2549
2550	/**
2551	* Walks the list of at VM destructor callbacks.
2552	* @param pVM The VM which is about to be destroyed.
2553	*/
2554	static void vmR3AtDtor(PVM pVM)
2555	{
2556	/*
2557	* Find it, unlink it and free it.
2558	*/
2559	VM_ATDTOR_LOCK();
2560	for (PVMATDTOR pCur = g_pVMAtDtorHead; pCur; pCur = pCur->pNext)
2561	pCur->pfnAtDtor(pVM, pCur->pvUser);
2562	VM_ATDTOR_UNLOCK();
2563	}
2564
2565
2566	/**
2567	* Worker which checks integrity of some internal structures.
2568	* This is yet another attempt to track down that AVL tree crash.
2569	*/
2570	static void vmR3CheckIntegrity(PVM pVM)
2571	{
2572	#ifdef VBOX_STRICT
2573	int rc = PGMR3CheckIntegrity(pVM);
2574	AssertReleaseRC(rc);
2575	#endif
2576	}
2577
2578
2579	/**
2580	* EMT rendezvous worker for VMR3Reset.
2581	*
2582	* This is called by the emulation threads as a response to the reset request
2583	* issued by VMR3Reset().
2584	*
2585	* @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This
2586	* is a strict return code, see FNVMMEMTRENDEZVOUS.)
2587	*
2588	* @param pVM The VM handle.
2589	* @param pVCpu The VMCPU handle of the EMT.
2590	* @param pvUser Ignored.
2591	*/
2592	static DECLCALLBACK(VBOXSTRICTRC) vmR3Reset(PVM pVM, PVMCPU pVCpu, void *pvUser)
2593	{
2594	Assert(!pvUser); NOREF(pvUser);
2595
2596	/*
2597	* The first EMT will try change the state to resetting. If this fails,
2598	* we won't get called for the other EMTs.
2599	*/
2600	if (pVCpu->idCpu == pVM->cCpus - 1)
2601	{
2602	int rc = vmR3TrySetState(pVM, "VMR3Reset", 3,
2603	VMSTATE_RESETTING, VMSTATE_RUNNING,
2604	VMSTATE_RESETTING, VMSTATE_SUSPENDED,
2605	VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS);
2606	if (RT_FAILURE(rc))
2607	return rc;
2608	}
2609
2610	/*
2611	* Check the state.
2612	*/
2613	VMSTATE enmVMState = VMR3GetState(pVM);
2614	AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING
2615	\|\| enmVMState == VMSTATE_RESETTING_LS,
2616	("%s\n", VMR3GetStateName(enmVMState)),
2617	VERR_INTERNAL_ERROR_4);
2618
2619	/*
2620	* EMT(0) does the full cleanup after all the other EMTs has been
2621	* thru here and been told to enter the EMSTATE_WAIT_SIPI state.
2622	*
2623	* Because there are per-cpu reset routines and order may/is important,
2624	* the following sequence looks a bit ugly...
2625	*/
2626	if (pVCpu->idCpu == 0)
2627	vmR3CheckIntegrity(pVM);
2628
2629	/* Reset the VCpu state. */
2630	VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED);
2631
2632	/* Clear all pending forced actions. */
2633	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST);
2634
2635	/*
2636	* Reset the VM components.
2637	*/
2638	if (pVCpu->idCpu == 0)
2639	{
2640	PATMR3Reset(pVM);
2641	CSAMR3Reset(pVM);
2642	PGMR3Reset(pVM); /* We clear VM RAM in PGMR3Reset. It's vital PDMR3Reset is executed
2643	* _afterwards_. E.g. ACPI sets up RAM tables during init/reset. */
2644	/** @todo PGMR3Reset should be called after PDMR3Reset really, because we'll trash OS <-> hardware
2645	* communication structures residing in RAM when done in the other order. I.e. the device must be
2646	* quiesced first, then we clear the memory and plan tables. Probably have to make these things
2647	* explicit in some way, some memory setup pass or something.
2648	* (Example: DevAHCI may assert if memory is zeroed before it've read the FIS.)
2649	*
2650	* @bugref{4467}
2651	*/
2652	MMR3Reset(pVM);
2653	PDMR3Reset(pVM);
2654	SELMR3Reset(pVM);
2655	TRPMR3Reset(pVM);
2656	REMR3Reset(pVM);
2657	IOMR3Reset(pVM);
2658	CPUMR3Reset(pVM);
2659	}
2660	CPUMR3ResetCpu(pVCpu);
2661	if (pVCpu->idCpu == 0)
2662	{
2663	TMR3Reset(pVM);
2664	EMR3Reset(pVM);
2665	HWACCMR3Reset(pVM); /* This must come after PATM, CSAM, CPUM, SELM and TRPM. */
2666
2667	#ifdef LOG_ENABLED
2668	/*
2669	* Debug logging.
2670	*/
2671	RTLogPrintf("\n\nThe VM was reset:\n");
2672	DBGFR3Info(pVM, "cpum", "verbose", NULL);
2673	#endif
2674
2675	/*
2676	* Since EMT(0) is the last to go thru here, it will advance the state.
2677	* When a live save is active, we will move on to SuspendingLS but
2678	* leave it for VMR3Reset to do the actual suspending due to deadlock risks.
2679	*/
2680	PUVM pUVM = pVM->pUVM;
2681	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
2682	enmVMState = pVM->enmVMState;
2683	if (enmVMState == VMSTATE_RESETTING)
2684	{
2685	if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED)
2686	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING);
2687	else
2688	vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING);
2689	}
2690	else
2691	vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS);
2692	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
2693
2694	vmR3CheckIntegrity(pVM);
2695
2696	/*
2697	* Do the suspend bit as well.
2698	* It only requires some EMT(0) work at present.
2699	*/
2700	if (enmVMState != VMSTATE_RESETTING)
2701	{
2702	vmR3SuspendDoWork(pVM);
2703	vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS);
2704	}
2705	}
2706
2707	return enmVMState == VMSTATE_RESETTING
2708	? VINF_EM_RESET
2709	: 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. */
2710	}
2711
2712
2713	/**
2714	* Reset the current VM.
2715	*
2716	* @returns VBox status code.
2717	* @param pVM VM to reset.
2718	*/
2719	VMMR3DECL(int) VMR3Reset(PVM pVM)
2720	{
2721	LogFlow(("VMR3Reset:\n"));
2722	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
2723
2724	/*
2725	* Gather all the EMTs to make sure there are no races before
2726	* changing the VM state.
2727	*/
2728	int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
2729	vmR3Reset, NULL);
2730	LogFlow(("VMR3Reset: returns %Rrc\n", rc));
2731	return rc;
2732	}
2733
2734
2735	/**
2736	* Gets the current VM state.
2737	*
2738	* @returns The current VM state.
2739	* @param pVM VM handle.
2740	* @thread Any
2741	*/
2742	VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM)
2743	{
2744	return pVM->enmVMState;
2745	}
2746
2747
2748	/**
2749	* Gets the state name string for a VM state.
2750	*
2751	* @returns Pointer to the state name. (readonly)
2752	* @param enmState The state.
2753	*/
2754	VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState)
2755	{
2756	switch (enmState)
2757	{
2758	case VMSTATE_CREATING: return "CREATING";
2759	case VMSTATE_CREATED: return "CREATED";
2760	case VMSTATE_LOADING: return "LOADING";
2761	case VMSTATE_POWERING_ON: return "POWERING_ON";
2762	case VMSTATE_RESUMING: return "RESUMING";
2763	case VMSTATE_RUNNING: return "RUNNING";
2764	case VMSTATE_RUNNING_LS: return "RUNNING_LS";
2765	case VMSTATE_RESETTING: return "RESETTING";
2766	case VMSTATE_RESETTING_LS: return "RESETTING_LS";
2767	case VMSTATE_SUSPENDED: return "SUSPENDED";
2768	case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS";
2769	case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS";
2770	case VMSTATE_SUSPENDING: return "SUSPENDING";
2771	case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS";
2772	case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS";
2773	case VMSTATE_SAVING: return "SAVING";
2774	case VMSTATE_DEBUGGING: return "DEBUGGING";
2775	case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS";
2776	case VMSTATE_POWERING_OFF: return "POWERING_OFF";
2777	case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS";
2778	case VMSTATE_FATAL_ERROR: return "FATAL_ERROR";
2779	case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS";
2780	case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION";
2781	case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS";
2782	case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE";
2783	case VMSTATE_OFF: return "OFF";
2784	case VMSTATE_OFF_LS: return "OFF_LS";
2785	case VMSTATE_DESTROYING: return "DESTROYING";
2786	case VMSTATE_TERMINATED: return "TERMINATED";
2787
2788	default:
2789	AssertMsgFailed(("Unknown state %d\n", enmState));
2790	return "Unknown!\n";
2791	}
2792	}
2793
2794
2795	/**
2796	* Validates the state transition in strict builds.
2797	*
2798	* @returns true if valid, false if not.
2799	*
2800	* @param enmStateOld The old (current) state.
2801	* @param enmStateNew The proposed new state.
2802	*
2803	* @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE
2804	* diagram (under State Machine Diagram).
2805	*/
2806	static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew)
2807	{
2808	#ifdef VBOX_STRICT
2809	switch (enmStateOld)
2810	{
2811	case VMSTATE_CREATING:
2812	AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2813	break;
2814
2815	case VMSTATE_CREATED:
2816	AssertMsgReturn( enmStateNew == VMSTATE_LOADING
2817	\|\| enmStateNew == VMSTATE_POWERING_ON
2818	\|\| enmStateNew == VMSTATE_POWERING_OFF
2819	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2820	break;
2821
2822	case VMSTATE_LOADING:
2823	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2824	\|\| enmStateNew == VMSTATE_LOAD_FAILURE
2825	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2826	break;
2827
2828	case VMSTATE_POWERING_ON:
2829	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
2830	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
2831	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2832	break;
2833
2834	case VMSTATE_RESUMING:
2835	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
2836	/\|\| enmStateNew == VMSTATE_FATAL_ERROR ?/
2837	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2838	break;
2839
2840	case VMSTATE_RUNNING:
2841	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
2842	\|\| enmStateNew == VMSTATE_SUSPENDING
2843	\|\| enmStateNew == VMSTATE_RESETTING
2844	\|\| enmStateNew == VMSTATE_RUNNING_LS
2845	\|\| enmStateNew == VMSTATE_DEBUGGING
2846	\|\| enmStateNew == VMSTATE_FATAL_ERROR
2847	\|\| enmStateNew == VMSTATE_GURU_MEDITATION
2848	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2849	break;
2850
2851	case VMSTATE_RUNNING_LS:
2852	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS
2853	\|\| enmStateNew == VMSTATE_SUSPENDING_LS
2854	\|\| enmStateNew == VMSTATE_SUSPENDING_EXT_LS
2855	\|\| enmStateNew == VMSTATE_RESETTING_LS
2856	\|\| enmStateNew == VMSTATE_RUNNING
2857	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
2858	\|\| enmStateNew == VMSTATE_FATAL_ERROR_LS
2859	\|\| enmStateNew == VMSTATE_GURU_MEDITATION_LS
2860	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2861	break;
2862
2863	case VMSTATE_RESETTING:
2864	AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2865	break;
2866
2867	case VMSTATE_RESETTING_LS:
2868	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS
2869	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2870	break;
2871
2872	case VMSTATE_SUSPENDING:
2873	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2874	break;
2875
2876	case VMSTATE_SUSPENDING_LS:
2877	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
2878	\|\| enmStateNew == VMSTATE_SUSPENDED_LS
2879	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2880	break;
2881
2882	case VMSTATE_SUSPENDING_EXT_LS:
2883	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING
2884	\|\| enmStateNew == VMSTATE_SUSPENDED_EXT_LS
2885	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2886	break;
2887
2888	case VMSTATE_SUSPENDED:
2889	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
2890	\|\| enmStateNew == VMSTATE_SAVING
2891	\|\| enmStateNew == VMSTATE_RESETTING
2892	\|\| enmStateNew == VMSTATE_RESUMING
2893	\|\| enmStateNew == VMSTATE_LOADING
2894	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2895	break;
2896
2897	case VMSTATE_SUSPENDED_LS:
2898	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2899	\|\| enmStateNew == VMSTATE_SAVING
2900	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2901	break;
2902
2903	case VMSTATE_SUSPENDED_EXT_LS:
2904	AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED
2905	\|\| enmStateNew == VMSTATE_SAVING
2906	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2907	break;
2908
2909	case VMSTATE_SAVING:
2910	AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2911	break;
2912
2913	case VMSTATE_DEBUGGING:
2914	AssertMsgReturn( enmStateNew == VMSTATE_RUNNING
2915	\|\| enmStateNew == VMSTATE_POWERING_OFF
2916	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2917	break;
2918
2919	case VMSTATE_DEBUGGING_LS:
2920	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
2921	\|\| enmStateNew == VMSTATE_RUNNING_LS
2922	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
2923	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2924	break;
2925
2926	case VMSTATE_POWERING_OFF:
2927	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2928	break;
2929
2930	case VMSTATE_POWERING_OFF_LS:
2931	AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF
2932	\|\| enmStateNew == VMSTATE_OFF_LS
2933	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2934	break;
2935
2936	case VMSTATE_OFF:
2937	AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2938	break;
2939
2940	case VMSTATE_OFF_LS:
2941	AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2942	break;
2943
2944	case VMSTATE_FATAL_ERROR:
2945	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2946	break;
2947
2948	case VMSTATE_FATAL_ERROR_LS:
2949	AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR
2950	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
2951	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2952	break;
2953
2954	case VMSTATE_GURU_MEDITATION:
2955	AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING
2956	\|\| enmStateNew == VMSTATE_POWERING_OFF
2957	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2958	break;
2959
2960	case VMSTATE_GURU_MEDITATION_LS:
2961	AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION
2962	\|\| enmStateNew == VMSTATE_DEBUGGING_LS
2963	\|\| enmStateNew == VMSTATE_POWERING_OFF_LS
2964	, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2965	break;
2966
2967	case VMSTATE_LOAD_FAILURE:
2968	AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2969	break;
2970
2971	case VMSTATE_DESTROYING:
2972	AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2973	break;
2974
2975	case VMSTATE_TERMINATED:
2976	default:
2977	AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false);
2978	break;
2979	}
2980	#endif /* VBOX_STRICT */
2981	return true;
2982	}
2983
2984
2985	/**
2986	* Does the state change callouts.
2987	*
2988	* The caller owns the AtStateCritSect.
2989	*
2990	* @param pVM The VM handle.
2991	* @param pUVM The UVM handle.
2992	* @param enmStateNew The New state.
2993	* @param enmStateOld The old state.
2994	*/
2995	static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
2996	{
2997	LogRel(("Changing the VM state from '%s' to '%s'.\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
2998
2999	for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext)
3000	{
3001	pCur->pfnAtState(pVM, enmStateNew, enmStateOld, pCur->pvUser);
3002	if ( enmStateNew != VMSTATE_DESTROYING
3003	&& pVM->enmVMState == VMSTATE_DESTROYING)
3004	break;
3005	AssertMsg(pVM->enmVMState == enmStateNew,
3006	("You are not allowed to change the state while in the change callback, except "
3007	"from destroying the VM. There are restrictions in the way the state changes "
3008	"are propagated up to the EM execution loop and it makes the program flow very "
3009	"difficult to follow. (%s, expected %s, old %s)\n",
3010	VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew),
3011	VMR3GetStateName(enmStateOld)));
3012	}
3013	}
3014
3015
3016	/**
3017	* Sets the current VM state, with the AtStatCritSect already entered.
3018	*
3019	* @param pVM The VM handle.
3020	* @param pUVM The UVM handle.
3021	* @param enmStateNew The new state.
3022	* @param enmStateOld The old state.
3023	*/
3024	static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3025	{
3026	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3027
3028	AssertMsg(pVM->enmVMState == enmStateOld,
3029	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3030	pUVM->vm.s.enmPrevVMState = enmStateOld;
3031	pVM->enmVMState = enmStateNew;
3032	VM_FF_CLEAR(pVM, VM_FF_CHECK_VM_STATE);
3033
3034	vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld);
3035	}
3036
3037
3038	/**
3039	* Sets the current VM state.
3040	*
3041	* @param pVM VM handle.
3042	* @param enmStateNew The new state.
3043	* @param enmStateOld The old state (for asserting only).
3044	*/
3045	static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld)
3046	{
3047	PUVM pUVM = pVM->pUVM;
3048	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3049
3050	AssertMsg(pVM->enmVMState == enmStateOld,
3051	("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld)));
3052	vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState);
3053
3054	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3055	}
3056
3057
3058	/**
3059	* Tries to perform a state transition.
3060	*
3061	* @returns The 1-based ordinal of the succeeding transition.
3062	* VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure.
3063	*
3064	* @param pVM The VM handle.
3065	* @param pszWho Who is trying to change it.
3066	* @param cTransitions The number of transitions in the ellipsis.
3067	* @param ... Transition pairs; new, old.
3068	*/
3069	static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...)
3070	{
3071	va_list va;
3072	VMSTATE enmStateNew = VMSTATE_CREATED;
3073	VMSTATE enmStateOld = VMSTATE_CREATED;
3074
3075	#ifdef VBOX_STRICT
3076	/*
3077	* Validate the input first.
3078	*/
3079	va_start(va, cTransitions);
3080	for (unsigned i = 0; i < cTransitions; i++)
3081	{
3082	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3083	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3084	vmR3ValidateStateTransition(enmStateOld, enmStateNew);
3085	}
3086	va_end(va);
3087	#endif
3088
3089	/*
3090	* Grab the lock and see if any of the proposed transisions works out.
3091	*/
3092	va_start(va, cTransitions);
3093	int rc = VERR_VM_INVALID_VM_STATE;
3094	PUVM pUVM = pVM->pUVM;
3095	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3096
3097	VMSTATE enmStateCur = pVM->enmVMState;
3098
3099	for (unsigned i = 0; i < cTransitions; i++)
3100	{
3101	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3102	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3103	if (enmStateCur == enmStateOld)
3104	{
3105	vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld);
3106	rc = i + 1;
3107	break;
3108	}
3109	}
3110
3111	if (RT_FAILURE(rc))
3112	{
3113	/*
3114	* Complain about it.
3115	*/
3116	if (cTransitions == 1)
3117	{
3118	LogRel(("%s: %s -> %s failed, because the VM state is actually %s\n",
3119	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur)));
3120	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3121	N_("%s failed because the VM state is %s instead of %s"),
3122	pszWho, VMR3GetStateName(enmStateCur), VMR3GetStateName(enmStateOld));
3123	AssertMsgFailed(("%s: %s -> %s failed, because the VM state is actually %s\n",
3124	pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur)));
3125	}
3126	else
3127	{
3128	va_end(va);
3129	va_start(va, cTransitions);
3130	LogRel(("%s:\n", pszWho));
3131	for (unsigned i = 0; i < cTransitions; i++)
3132	{
3133	enmStateNew = (VMSTATE)va_arg(va, /VMSTATE/int);
3134	enmStateOld = (VMSTATE)va_arg(va, /VMSTATE/int);
3135	LogRel(("%s%s -> %s",
3136	i ? ", " : " ", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)));
3137	}
3138	LogRel((" failed, because the VM state is actually %s\n", VMR3GetStateName(enmStateCur)));
3139	VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS,
3140	N_("%s failed because the current VM state, %s, was not found in the state transition table"),
3141	pszWho, VMR3GetStateName(enmStateCur), VMR3GetStateName(enmStateOld));
3142	AssertMsgFailed(("%s - state=%s, see release log for full details. Check the cTransitions passed us.\n",
3143	pszWho, VMR3GetStateName(enmStateCur)));
3144	}
3145	}
3146
3147	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3148	va_end(va);
3149	Assert(rc > 0 \|\| rc < 0);
3150	return rc;
3151	}
3152
3153
3154	/**
3155	* Flag a guru meditation ... a hack.
3156	*
3157	* @param pVM The VM handle
3158	*
3159	* @todo Rewrite this part. The guru meditation should be flagged
3160	* immediately by the VMM and not by VMEmt.cpp when it's all over.
3161	*/
3162	void vmR3SetGuruMeditation(PVM pVM)
3163	{
3164	PUVM pUVM = pVM->pUVM;
3165	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3166
3167	VMSTATE enmStateCur = pVM->enmVMState;
3168	if (enmStateCur == VMSTATE_RUNNING)
3169	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING);
3170	else if (enmStateCur == VMSTATE_RUNNING_LS)
3171	{
3172	vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS);
3173	SSMR3Cancel(pVM);
3174	}
3175
3176	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3177	}
3178
3179
3180	/**
3181	* Called by vmR3EmulationThreadWithId just before the VM structure is freed.
3182	*
3183	* @param pVM The VM handle.
3184	*/
3185	void vmR3SetTerminated(PVM pVM)
3186	{
3187	vmR3SetState(pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING);
3188	}
3189
3190
3191	/**
3192	* Checks if the VM was teleported and hasn't been fully resumed yet.
3193	*
3194	* This applies to both sides of the teleportation since we may leave a working
3195	* clone behind and the user is allowed to resume this...
3196	*
3197	* @returns true / false.
3198	* @param pVM The VM handle.
3199	* @thread Any thread.
3200	*/
3201	VMMR3DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM)
3202	{
3203	VM_ASSERT_VALID_EXT_RETURN(pVM, false);
3204	return pVM->vm.s.fTeleportedAndNotFullyResumedYet;
3205	}
3206
3207
3208	/**
3209	* Registers a VM state change callback.
3210	*
3211	* You are not allowed to call any function which changes the VM state from a
3212	* state callback.
3213	*
3214	* @returns VBox status code.
3215	* @param pVM VM handle.
3216	* @param pfnAtState Pointer to callback.
3217	* @param pvUser User argument.
3218	* @thread Any.
3219	*/
3220	VMMR3DECL(int) VMR3AtStateRegister(PVM pVM, PFNVMATSTATE pfnAtState, void *pvUser)
3221	{
3222	LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3223
3224	/*
3225	* Validate input.
3226	*/
3227	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3228	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3229
3230	/*
3231	* Allocate a new record.
3232	*/
3233	PUVM pUVM = pVM->pUVM;
3234	PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3235	if (!pNew)
3236	return VERR_NO_MEMORY;
3237
3238	/* fill */
3239	pNew->pfnAtState = pfnAtState;
3240	pNew->pvUser = pvUser;
3241
3242	/* insert */
3243	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3244	pNew->pNext = *pUVM->vm.s.ppAtStateNext;
3245	*pUVM->vm.s.ppAtStateNext = pNew;
3246	pUVM->vm.s.ppAtStateNext = &pNew->pNext;
3247	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3248
3249	return VINF_SUCCESS;
3250	}
3251
3252
3253	/**
3254	* Deregisters a VM state change callback.
3255	*
3256	* @returns VBox status code.
3257	* @param pVM VM handle.
3258	* @param pfnAtState Pointer to callback.
3259	* @param pvUser User argument.
3260	* @thread Any.
3261	*/
3262	VMMR3DECL(int) VMR3AtStateDeregister(PVM pVM, PFNVMATSTATE pfnAtState, void *pvUser)
3263	{
3264	LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser));
3265
3266	/*
3267	* Validate input.
3268	*/
3269	AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER);
3270	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3271
3272	PUVM pUVM = pVM->pUVM;
3273	RTCritSectEnter(&pUVM->vm.s.AtStateCritSect);
3274
3275	/*
3276	* Search the list for the entry.
3277	*/
3278	PVMATSTATE pPrev = NULL;
3279	PVMATSTATE pCur = pUVM->vm.s.pAtState;
3280	while ( pCur
3281	&& ( pCur->pfnAtState != pfnAtState
3282	\|\| pCur->pvUser != pvUser))
3283	{
3284	pPrev = pCur;
3285	pCur = pCur->pNext;
3286	}
3287	if (!pCur)
3288	{
3289	AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState));
3290	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3291	return VERR_FILE_NOT_FOUND;
3292	}
3293
3294	/*
3295	* Unlink it.
3296	*/
3297	if (pPrev)
3298	{
3299	pPrev->pNext = pCur->pNext;
3300	if (!pCur->pNext)
3301	pUVM->vm.s.ppAtStateNext = &pPrev->pNext;
3302	}
3303	else
3304	{
3305	pUVM->vm.s.pAtState = pCur->pNext;
3306	if (!pCur->pNext)
3307	pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState;
3308	}
3309
3310	RTCritSectLeave(&pUVM->vm.s.AtStateCritSect);
3311
3312	/*
3313	* Free it.
3314	*/
3315	pCur->pfnAtState = NULL;
3316	pCur->pNext = NULL;
3317	MMR3HeapFree(pCur);
3318
3319	return VINF_SUCCESS;
3320	}
3321
3322
3323	/**
3324	* Registers a VM error callback.
3325	*
3326	* @returns VBox status code.
3327	* @param pVM The VM handle.
3328	* @param pfnAtError Pointer to callback.
3329	* @param pvUser User argument.
3330	* @thread Any.
3331	*/
3332	VMMR3DECL(int) VMR3AtErrorRegister(PVM pVM, PFNVMATERROR pfnAtError, void *pvUser)
3333	{
3334	return VMR3AtErrorRegisterU(pVM->pUVM, pfnAtError, pvUser);
3335	}
3336
3337
3338	/**
3339	* Registers a VM error callback.
3340	*
3341	* @returns VBox status code.
3342	* @param pUVM The VM handle.
3343	* @param pfnAtError Pointer to callback.
3344	* @param pvUser User argument.
3345	* @thread Any.
3346	*/
3347	VMMR3DECL(int) VMR3AtErrorRegisterU(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser)
3348	{
3349	LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3350
3351	/*
3352	* Validate input.
3353	*/
3354	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3355	UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE);
3356
3357	/*
3358	* Allocate a new record.
3359	*/
3360	PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3361	if (!pNew)
3362	return VERR_NO_MEMORY;
3363
3364	/* fill */
3365	pNew->pfnAtError = pfnAtError;
3366	pNew->pvUser = pvUser;
3367
3368	/* insert */
3369	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3370	pNew->pNext = *pUVM->vm.s.ppAtErrorNext;
3371	*pUVM->vm.s.ppAtErrorNext = pNew;
3372	pUVM->vm.s.ppAtErrorNext = &pNew->pNext;
3373	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3374
3375	return VINF_SUCCESS;
3376	}
3377
3378
3379	/**
3380	* Deregisters a VM error callback.
3381	*
3382	* @returns VBox status code.
3383	* @param pVM The VM handle.
3384	* @param pfnAtError Pointer to callback.
3385	* @param pvUser User argument.
3386	* @thread Any.
3387	*/
3388	VMMR3DECL(int) VMR3AtErrorDeregister(PVM pVM, PFNVMATERROR pfnAtError, void *pvUser)
3389	{
3390	LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser));
3391
3392	/*
3393	* Validate input.
3394	*/
3395	AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER);
3396	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3397
3398	PUVM pUVM = pVM->pUVM;
3399	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3400
3401	/*
3402	* Search the list for the entry.
3403	*/
3404	PVMATERROR pPrev = NULL;
3405	PVMATERROR pCur = pUVM->vm.s.pAtError;
3406	while ( pCur
3407	&& ( pCur->pfnAtError != pfnAtError
3408	\|\| pCur->pvUser != pvUser))
3409	{
3410	pPrev = pCur;
3411	pCur = pCur->pNext;
3412	}
3413	if (!pCur)
3414	{
3415	AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError));
3416	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3417	return VERR_FILE_NOT_FOUND;
3418	}
3419
3420	/*
3421	* Unlink it.
3422	*/
3423	if (pPrev)
3424	{
3425	pPrev->pNext = pCur->pNext;
3426	if (!pCur->pNext)
3427	pUVM->vm.s.ppAtErrorNext = &pPrev->pNext;
3428	}
3429	else
3430	{
3431	pUVM->vm.s.pAtError = pCur->pNext;
3432	if (!pCur->pNext)
3433	pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError;
3434	}
3435
3436	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3437
3438	/*
3439	* Free it.
3440	*/
3441	pCur->pfnAtError = NULL;
3442	pCur->pNext = NULL;
3443	MMR3HeapFree(pCur);
3444
3445	return VINF_SUCCESS;
3446	}
3447
3448
3449	/**
3450	* Ellipsis to va_list wrapper for calling pfnAtError.
3451	*/
3452	static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3453	{
3454	va_list va;
3455	va_start(va, pszFormat);
3456	pCur->pfnAtError(pVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va);
3457	va_end(va);
3458	}
3459
3460
3461	/**
3462	* This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV.
3463	* The message is found in VMINT.
3464	*
3465	* @param pVM The VM handle.
3466	* @thread EMT.
3467	*/
3468	VMMR3DECL(void) VMR3SetErrorWorker(PVM pVM)
3469	{
3470	VM_ASSERT_EMT(pVM);
3471	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Contrats!\n"));
3472
3473	/*
3474	* Unpack the error (if we managed to format one).
3475	*/
3476	PVMERROR pErr = pVM->vm.s.pErrorR3;
3477	const char *pszFile = NULL;
3478	const char *pszFunction = NULL;
3479	uint32_t iLine = 0;
3480	const char *pszMessage;
3481	int32_t rc = VERR_MM_HYPER_NO_MEMORY;
3482	if (pErr)
3483	{
3484	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3485	if (pErr->offFile)
3486	pszFile = (const char *)pErr + pErr->offFile;
3487	iLine = pErr->iLine;
3488	if (pErr->offFunction)
3489	pszFunction = (const char *)pErr + pErr->offFunction;
3490	if (pErr->offMessage)
3491	pszMessage = (const char *)pErr + pErr->offMessage;
3492	else
3493	pszMessage = "No message!";
3494	}
3495	else
3496	pszMessage = "No message! (Failed to allocate memory to put the error message in!)";
3497
3498	/*
3499	* Call the at error callbacks.
3500	*/
3501	PUVM pUVM = pVM->pUVM;
3502	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3503	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3504	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3505	vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage);
3506	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3507	}
3508
3509
3510	/**
3511	* Gets the number of errors raised via VMSetError.
3512	*
3513	* This can be used avoid double error messages.
3514	*
3515	* @returns The error count.
3516	* @param pVM The VM handle.
3517	*/
3518	VMMR3DECL(uint32_t) VMR3GetErrorCount(PVM pVM)
3519	{
3520	return pVM->pUVM->vm.s.cErrors;
3521	}
3522
3523
3524	/**
3525	* Creation time wrapper for vmR3SetErrorUV.
3526	*
3527	* @returns rc.
3528	* @param pUVM Pointer to the user mode VM structure.
3529	* @param rc The VBox status code.
3530	* @param RT_SRC_POS_DECL The source position of this error.
3531	* @param pszFormat Format string.
3532	* @param ... The arguments.
3533	* @thread Any thread.
3534	*/
3535	static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...)
3536	{
3537	va_list va;
3538	va_start(va, pszFormat);
3539	vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va);
3540	va_end(va);
3541	return rc;
3542	}
3543
3544
3545	/**
3546	* Worker which calls everyone listening to the VM error messages.
3547	*
3548	* @param pUVM Pointer to the user mode VM structure.
3549	* @param rc The VBox status code.
3550	* @param RT_SRC_POS_DECL The source position of this error.
3551	* @param pszFormat Format string.
3552	* @param pArgs Pointer to the format arguments.
3553	* @thread EMT
3554	*/
3555	DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char pszFormat, va_list pArgs)
3556	{
3557	/*
3558	* Log the error.
3559	*/
3560	va_list va3;
3561	va_copy(va3, *pArgs);
3562	RTLogRelPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3563	"VMSetError: %N\n",
3564	pszFile, iLine, pszFunction, rc,
3565	pszFormat, &va3);
3566	va_end(va3);
3567
3568	#ifdef LOG_ENABLED
3569	va_copy(va3, *pArgs);
3570	RTLogPrintf("VMSetError: %s(%d) %s; rc=%Rrc\n"
3571	"%N\n",
3572	pszFile, iLine, pszFunction, rc,
3573	pszFormat, &va3);
3574	va_end(va3);
3575	#endif
3576
3577	/*
3578	* Make a copy of the message.
3579	*/
3580	if (pUVM->pVM)
3581	vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs);
3582
3583	/*
3584	* Call the at error callbacks.
3585	*/
3586	bool fCalledSomeone = false;
3587	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3588	ASMAtomicIncU32(&pUVM->vm.s.cErrors);
3589	for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext)
3590	{
3591	va_list va2;
3592	va_copy(va2, *pArgs);
3593	pCur->pfnAtError(pUVM->pVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2);
3594	va_end(va2);
3595	fCalledSomeone = true;
3596	}
3597	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3598	}
3599
3600
3601	/**
3602	* Registers a VM runtime error callback.
3603	*
3604	* @returns VBox status code.
3605	* @param pVM The VM handle.
3606	* @param pfnAtRuntimeError Pointer to callback.
3607	* @param pvUser User argument.
3608	* @thread Any.
3609	*/
3610	VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PVM pVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3611	{
3612	LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3613
3614	/*
3615	* Validate input.
3616	*/
3617	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3618	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3619
3620	/*
3621	* Allocate a new record.
3622	*/
3623	PUVM pUVM = pVM->pUVM;
3624	PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew));
3625	if (!pNew)
3626	return VERR_NO_MEMORY;
3627
3628	/* fill */
3629	pNew->pfnAtRuntimeError = pfnAtRuntimeError;
3630	pNew->pvUser = pvUser;
3631
3632	/* insert */
3633	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3634	pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext;
3635	*pUVM->vm.s.ppAtRuntimeErrorNext = pNew;
3636	pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext;
3637	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3638
3639	return VINF_SUCCESS;
3640	}
3641
3642
3643	/**
3644	* Deregisters a VM runtime error callback.
3645	*
3646	* @returns VBox status code.
3647	* @param pVM The VM handle.
3648	* @param pfnAtRuntimeError Pointer to callback.
3649	* @param pvUser User argument.
3650	* @thread Any.
3651	*/
3652	VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PVM pVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser)
3653	{
3654	LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser));
3655
3656	/*
3657	* Validate input.
3658	*/
3659	AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER);
3660	VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
3661
3662	PUVM pUVM = pVM->pUVM;
3663	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3664
3665	/*
3666	* Search the list for the entry.
3667	*/
3668	PVMATRUNTIMEERROR pPrev = NULL;
3669	PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError;
3670	while ( pCur
3671	&& ( pCur->pfnAtRuntimeError != pfnAtRuntimeError
3672	\|\| pCur->pvUser != pvUser))
3673	{
3674	pPrev = pCur;
3675	pCur = pCur->pNext;
3676	}
3677	if (!pCur)
3678	{
3679	AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError));
3680	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3681	return VERR_FILE_NOT_FOUND;
3682	}
3683
3684	/*
3685	* Unlink it.
3686	*/
3687	if (pPrev)
3688	{
3689	pPrev->pNext = pCur->pNext;
3690	if (!pCur->pNext)
3691	pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext;
3692	}
3693	else
3694	{
3695	pUVM->vm.s.pAtRuntimeError = pCur->pNext;
3696	if (!pCur->pNext)
3697	pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError;
3698	}
3699
3700	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3701
3702	/*
3703	* Free it.
3704	*/
3705	pCur->pfnAtRuntimeError = NULL;
3706	pCur->pNext = NULL;
3707	MMR3HeapFree(pCur);
3708
3709	return VINF_SUCCESS;
3710	}
3711
3712
3713	/**
3714	* EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change
3715	* the state to FatalError(LS).
3716	*
3717	* @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPENED. (This is a strict
3718	* return code, see FNVMMEMTRENDEZVOUS.)
3719	*
3720	* @param pVM The VM handle.
3721	* @param pVCpu The VMCPU handle of the EMT.
3722	* @param pvUser Ignored.
3723	*/
3724	static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser)
3725	{
3726	NOREF(pVCpu);
3727	Assert(!pvUser); NOREF(pvUser);
3728
3729	/*
3730	* The first EMT thru here changes the state.
3731	*/
3732	if (pVCpu->idCpu == pVM->cCpus - 1)
3733	{
3734	int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2,
3735	VMSTATE_FATAL_ERROR, VMSTATE_RUNNING,
3736	VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS);
3737	if (RT_FAILURE(rc))
3738	return rc;
3739	if (rc == 2)
3740	SSMR3Cancel(pVM);
3741
3742	VM_FF_SET(pVM, VM_FF_CHECK_VM_STATE);
3743	}
3744
3745	/* This'll make sure we get out of whereever we are (e.g. REM). */
3746	return VINF_EM_SUSPEND;
3747	}
3748
3749
3750	/**
3751	* Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV.
3752	*
3753	* This does the common parts after the error has been saved / retrieved.
3754	*
3755	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
3756	*
3757	* @param pVM The VM handle.
3758	* @param fFlags The error flags.
3759	* @param pszErrorId Error ID string.
3760	* @param pszFormat Format string.
3761	* @param pVa Pointer to the format arguments.
3762	*/
3763	static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
3764	{
3765	LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags));
3766
3767	/*
3768	* Take actions before the call.
3769	*/
3770	int rc;
3771	if (fFlags & VMSETRTERR_FLAGS_FATAL)
3772	rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING \| VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR,
3773	vmR3SetRuntimeErrorChangeState, NULL);
3774	else if (fFlags & VMSETRTERR_FLAGS_SUSPEND)
3775	rc = VMR3Suspend(pVM);
3776	else
3777	rc = VINF_SUCCESS;
3778
3779	/*
3780	* Do the callback round.
3781	*/
3782	PUVM pUVM = pVM->pUVM;
3783	RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect);
3784	ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors);
3785	for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext)
3786	{
3787	va_list va;
3788	va_copy(va, *pVa);
3789	pCur->pfnAtRuntimeError(pVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va);
3790	va_end(va);
3791	}
3792	RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect);
3793
3794	return rc;
3795	}
3796
3797
3798	/**
3799	* Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon.
3800	*/
3801	static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, ...)
3802	{
3803	va_list va;
3804	va_start(va, pszFormat);
3805	int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va);
3806	va_end(va);
3807	return rc;
3808	}
3809
3810
3811	/**
3812	* This is a worker function for RC and Ring-0 calls to VMSetError and
3813	* VMSetErrorV.
3814	*
3815	* The message is found in VMINT.
3816	*
3817	* @returns VBox status code, see VMSetRuntimeError.
3818	* @param pVM The VM handle.
3819	* @thread EMT.
3820	*/
3821	VMMR3DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM)
3822	{
3823	VM_ASSERT_EMT(pVM);
3824	AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n"));
3825
3826	/*
3827	* Unpack the error (if we managed to format one).
3828	*/
3829	const char *pszErrorId = "SetRuntimeError";
3830	const char *pszMessage = "No message!";
3831	uint32_t fFlags = VMSETRTERR_FLAGS_FATAL;
3832	PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3;
3833	if (pErr)
3834	{
3835	AssertCompile(sizeof(const char) == sizeof(uint8_t));
3836	if (pErr->offErrorId)
3837	pszErrorId = (const char *)pErr + pErr->offErrorId;
3838	if (pErr->offMessage)
3839	pszMessage = (const char *)pErr + pErr->offMessage;
3840	fFlags = pErr->fFlags;
3841	}
3842
3843	/*
3844	* Join cause with vmR3SetRuntimeErrorV.
3845	*/
3846	return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
3847	}
3848
3849
3850	/**
3851	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
3852	*
3853	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
3854	*
3855	* @param pVM The VM handle.
3856	* @param fFlags The error flags.
3857	* @param pszErrorId Error ID string.
3858	* @param pszMessage The error message residing the MM heap.
3859	*
3860	* @thread EMT
3861	*/
3862	DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char pszErrorId, char pszMessage)
3863	{
3864	#if 0 /** @todo make copy of the error msg. */
3865	/*
3866	* Make a copy of the message.
3867	*/
3868	va_list va2;
3869	va_copy(va2, *pVa);
3870	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
3871	va_end(va2);
3872	#endif
3873
3874	/*
3875	* Join paths with VMR3SetRuntimeErrorWorker.
3876	*/
3877	int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage);
3878	MMR3HeapFree(pszMessage);
3879	return rc;
3880	}
3881
3882
3883	/**
3884	* Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3.
3885	*
3886	* @returns VBox status code with modifications, see VMSetRuntimeErrorV.
3887	*
3888	* @param pVM The VM handle.
3889	* @param fFlags The error flags.
3890	* @param pszErrorId Error ID string.
3891	* @param pszFormat Format string.
3892	* @param pVa Pointer to the format arguments.
3893	*
3894	* @thread EMT
3895	*/
3896	DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char pszErrorId, const char pszFormat, va_list *pVa)
3897	{
3898	/*
3899	* Make a copy of the message.
3900	*/
3901	va_list va2;
3902	va_copy(va2, *pVa);
3903	vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2);
3904	va_end(va2);
3905
3906	/*
3907	* Join paths with VMR3SetRuntimeErrorWorker.
3908	*/
3909	return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa);
3910	}
3911
3912
3913	/**
3914	* Gets the number of runtime errors raised via VMR3SetRuntimeError.
3915	*
3916	* This can be used avoid double error messages.
3917	*
3918	* @returns The runtime error count.
3919	* @param pVM The VM handle.
3920	*/
3921	VMMR3DECL(uint32_t) VMR3GetRuntimeErrorCount(PVM pVM)
3922	{
3923	return pVM->pUVM->vm.s.cRuntimeErrors;
3924	}
3925
3926
3927	/**
3928	* Gets the ID virtual of the virtual CPU assoicated with the calling thread.
3929	*
3930	* @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT.
3931	*
3932	* @param pVM The VM handle.
3933	*/
3934	VMMR3DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM)
3935	{
3936	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
3937	return pUVCpu
3938	? pUVCpu->idCpu
3939	: NIL_VMCPUID;
3940	}
3941
3942
3943	/**
3944	* Returns the native handle of the current EMT VMCPU thread.
3945	*
3946	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
3947	* @param pVM The VM handle.
3948	* @thread EMT
3949	*/
3950	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM)
3951	{
3952	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
3953
3954	if (!pUVCpu)
3955	return NIL_RTNATIVETHREAD;
3956
3957	return pUVCpu->vm.s.NativeThreadEMT;
3958	}
3959
3960
3961	/**
3962	* Returns the native handle of the current EMT VMCPU thread.
3963	*
3964	* @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise
3965	* @param pVM The VM handle.
3966	* @thread EMT
3967	*/
3968	VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM)
3969	{
3970	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
3971
3972	if (!pUVCpu)
3973	return NIL_RTNATIVETHREAD;
3974
3975	return pUVCpu->vm.s.NativeThreadEMT;
3976	}
3977
3978
3979	/**
3980	* Returns the 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(RTTHREAD) VMR3GetVMCPUThread(PVM pVM)
3987	{
3988	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS);
3989
3990	if (!pUVCpu)
3991	return NIL_RTTHREAD;
3992
3993	return pUVCpu->vm.s.ThreadEMT;
3994	}
3995
3996
3997	/**
3998	* Returns the 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(RTTHREAD) VMR3GetVMCPUThreadU(PUVM pUVM)
4005	{
4006	PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS);
4007
4008	if (!pUVCpu)
4009	return NIL_RTTHREAD;
4010
4011	return pUVCpu->vm.s.ThreadEMT;
4012	}
4013
4014
4015	/**
4016	* Return the package and core id of a CPU.
4017	*
4018	* @returns VBOX status code.
4019	* @param pVM The VM to operate on.
4020	* @param idCpu Virtual CPU to get the ID from.
4021	* @param pidCpuCore Where to store the core ID of the virtual CPU.
4022	* @param pidCpuPackage Where to store the package ID of the virtual CPU.
4023	*
4024	*/
4025	VMMR3DECL(int) VMR3GetCpuCoreAndPackageIdFromCpuId(PVM pVM, VMCPUID idCpu, uint32_t pidCpuCore, uint32_t pidCpuPackage)
4026	{
4027	if (idCpu >= pVM->cCpus)
4028	return VERR_INVALID_CPU_ID;
4029
4030	#ifdef VBOX_WITH_MULTI_CORE
4031	*pidCpuCore = idCpu;
4032	*pidCpuPackage = 0;
4033	#else
4034	*pidCpuCore = 0;
4035	*pidCpuPackage = idCpu;
4036	#endif
4037
4038	return VINF_SUCCESS;
4039	}
4040
4041
4042	/**
4043	* Worker for VMR3HotUnplugCpu.
4044	*
4045	* @returns VINF_EM_WAIT_SPIP (strict status code).
4046	* @param pVM The VM handle.
4047	* @param idCpu The current CPU.
4048	*/
4049	static DECLCALLBACK(int) vmR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4050	{
4051	PVMCPU pVCpu = VMMGetCpuById(pVM, idCpu);
4052	VMCPU_ASSERT_EMT(pVCpu);
4053
4054	/*
4055	* Reset per CPU resources.
4056	*
4057	* Actually only needed for VT-x because the CPU seems to be still in some
4058	* paged mode and startup fails after a new hot plug event. SVM works fine
4059	* even without this.
4060	*/
4061	Log(("vmR3HotUnplugCpu for VCPU %u\n", idCpu));
4062	PGMR3ResetUnpluggedCpu(pVM, pVCpu);
4063	PDMR3ResetCpu(pVCpu);
4064	TRPMR3ResetCpu(pVCpu);
4065	CPUMR3ResetCpu(pVCpu);
4066	EMR3ResetCpu(pVCpu);
4067	HWACCMR3ResetCpu(pVCpu);
4068	return VINF_EM_WAIT_SIPI;
4069	}
4070
4071
4072	/**
4073	* Hot-unplugs a CPU from the guest.
4074	*
4075	* @returns VBox status code.
4076	* @param pVM The VM to operate on.
4077	* @param idCpu Virtual CPU to perform the hot unplugging operation on.
4078	*/
4079	VMMR3DECL(int) VMR3HotUnplugCpu(PVM pVM, VMCPUID idCpu)
4080	{
4081	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4082
4083	/** @todo r=bird: Don't destroy the EMT, it'll break VMMR3EmtRendezvous and
4084	* broadcast requests. Just note down somewhere that the CPU is
4085	* offline and send it to SPIP wait. Maybe modify VMCPUSTATE and push
4086	* it out of the EM loops when offline. */
4087	return VMR3ReqCallNoWaitU(pVM->pUVM, idCpu, (PFNRT)vmR3HotUnplugCpu, 2, pVM, idCpu);
4088	}
4089
4090
4091	/**
4092	* Hot-plugs a CPU on the guest.
4093	*
4094	* @returns VBox status code.
4095	* @param pVM The VM to operate on.
4096	* @param idCpu Virtual CPU to perform the hot plugging operation on.
4097	*/
4098	VMMR3DECL(int) VMR3HotPlugCpu(PVM pVM, VMCPUID idCpu)
4099	{
4100	AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);
4101
4102	/** @todo r-bird: Just mark it online and make sure it waits on SPIP. */
4103	return VINF_SUCCESS;
4104	}
4105

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/VMM/VM.cpp@ 31326

Download in other formats: