/* $Id: VM.cpp 24874 2009-11-23 15:37:58Z vboxsync $ */ /** @file * VM - Virtual Machine */ /* * Copyright (C) 2006-2007 Sun Microsystems, Inc. * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 USA or visit http://www.sun.com if you need * additional information or have any questions. */ /** @page pg_vm VM API * * This is the encapsulating bit. It provides the APIs that Main and VBoxBFE * use to create a VMM instance for running a guest in. It also provides * facilities for queuing request for execution in EMT (serialization purposes * mostly) and for reporting error back to the VMM user (Main/VBoxBFE). * * * @section sec_vm_design Design Critique / Things To Do * * In hindsight this component is a big design mistake, all this stuff really * belongs in the VMM component. It just seemed like a kind of ok idea at a * time when the VMM bit was a kind of vague. 'VM' also happend to be the name * of the per-VM instance structure (see vm.h), so it kind of made sense. * However as it turned out, VMM(.cpp) is almost empty all it provides in ring-3 * is some minor functionally and some "routing" services. * * Fixing this is just a matter of some more or less straight forward * refactoring, the question is just when someone will get to it. Moving the EMT * would be a good start. * */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_VM #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef VBOX_WITH_VMI # include #endif #include #include #include #include #include "VMInternal.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /******************************************************************************* * Structures and Typedefs * *******************************************************************************/ /** * VM destruction callback registration record. */ typedef struct VMATDTOR { /** Pointer to the next record in the list. */ struct VMATDTOR *pNext; /** Pointer to the callback function. */ PFNVMATDTOR pfnAtDtor; /** The user argument. */ void *pvUser; } VMATDTOR; /** Pointer to a VM destruction callback registration record. */ typedef VMATDTOR *PVMATDTOR; /******************************************************************************* * Global Variables * *******************************************************************************/ /** Pointer to the list of VMs. */ static PUVM g_pUVMsHead = NULL; /** Pointer to the list of at VM destruction callbacks. */ static PVMATDTOR g_pVMAtDtorHead = NULL; /** Lock the g_pVMAtDtorHead list. */ #define VM_ATDTOR_LOCK() do { } while (0) /** Unlock the g_pVMAtDtorHead list. */ #define VM_ATDTOR_UNLOCK() do { } while (0) /******************************************************************************* * Internal Functions * *******************************************************************************/ static int vmR3CreateUVM(uint32_t cCpus, PUVM *ppUVM); static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM); static int vmR3InitRing3(PVM pVM, PUVM pUVM); static int vmR3InitVMCpu(PVM pVM); static int vmR3InitRing0(PVM pVM); static int vmR3InitGC(PVM pVM); static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat); static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char *pchBuf, size_t cchBuf, void *pvUser); static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait); static void vmR3AtDtor(PVM pVM); static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew); static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld); static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...); static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld); static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld); static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...); /** * Do global VMM init. * * @returns VBox status code. */ VMMR3DECL(int) VMR3GlobalInit(void) { /* * Only once. */ static bool volatile s_fDone = false; if (s_fDone) return VINF_SUCCESS; /* * We're done. */ s_fDone = true; return VINF_SUCCESS; } /** * Creates a virtual machine by calling the supplied configuration constructor. * * On successful returned the VM is powered, i.e. VMR3PowerOn() should be * called to start the execution. * * @returns 0 on success. * @returns VBox error code on failure. * @param cCpus Number of virtual CPUs for the new VM. * @param pfnVMAtError Pointer to callback function for setting VM * errors. This was added as an implicit call to * VMR3AtErrorRegister() since there is no way the * caller can get to the VM handle early enough to * do this on its own. * This is called in the context of an EMT. * @param pvUserVM The user argument passed to pfnVMAtError. * @param pfnCFGMConstructor Pointer to callback function for constructing the VM configuration tree. * This is called in the context of an EMT0. * @param pvUserCFGM The user argument passed to pfnCFGMConstructor. * @param ppVM Where to store the 'handle' of the created VM. */ VMMR3DECL(int) VMR3Create(uint32_t cCpus, PFNVMATERROR pfnVMAtError, void *pvUserVM, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM, PVM *ppVM) { LogFlow(("VMR3Create: cCpus=%RU32 pfnVMAtError=%p pvUserVM=%p pfnCFGMConstructor=%p pvUserCFGM=%p ppVM=%p\n", cCpus, pfnVMAtError, pvUserVM, pfnCFGMConstructor, pvUserCFGM, ppVM)); /* * Because of the current hackiness of the applications * we'll have to initialize global stuff from here. * Later the applications will take care of this in a proper way. */ static bool fGlobalInitDone = false; if (!fGlobalInitDone) { int rc = VMR3GlobalInit(); if (RT_FAILURE(rc)) return rc; fGlobalInitDone = true; } /* * Validate input. */ AssertLogRelMsgReturn(cCpus > 0 && cCpus <= VMM_MAX_CPU_COUNT, ("%RU32\n", cCpus), VERR_TOO_MANY_CPUS); /* * Create the UVM so we can register the at-error callback * and consoliate a bit of cleanup code. */ PUVM pUVM = NULL; /* shuts up gcc */ int rc = vmR3CreateUVM(cCpus, &pUVM); if (RT_FAILURE(rc)) return rc; if (pfnVMAtError) rc = VMR3AtErrorRegisterU(pUVM, pfnVMAtError, pvUserVM); if (RT_SUCCESS(rc)) { /* * Initialize the support library creating the session for this VM. */ rc = SUPR3Init(&pUVM->vm.s.pSession); if (RT_SUCCESS(rc)) { /* * Call vmR3CreateU in the EMT thread and wait for it to finish. * * Note! VMCPUID_ANY is used here because VMR3ReqQueueU would have trouble * submitting a request to a specific VCPU without a pVM. So, to make * sure init is running on EMT(0), vmR3EmulationThreadWithId makes sure * that only EMT(0) is servicing VMCPUID_ANY requests when pVM is NULL. */ PVMREQ pReq; rc = VMR3ReqCallU(pUVM, VMCPUID_ANY, &pReq, RT_INDEFINITE_WAIT, VMREQFLAGS_VBOX_STATUS, (PFNRT)vmR3CreateU, 4, pUVM, cCpus, pfnCFGMConstructor, pvUserCFGM); if (RT_SUCCESS(rc)) { rc = pReq->iStatus; VMR3ReqFree(pReq); if (RT_SUCCESS(rc)) { /* * Success! */ *ppVM = pUVM->pVM; LogFlow(("VMR3Create: returns VINF_SUCCESS *ppVM=%p\n", *ppVM)); return VINF_SUCCESS; } } else AssertMsgFailed(("VMR3ReqCallU failed rc=%Rrc\n", rc)); /* * An error occurred during VM creation. Set the error message directly * using the initial callback, as the callback list doesn't exist yet. */ const char *pszError = NULL; switch (rc) { case VERR_VMX_IN_VMX_ROOT_MODE: #ifdef RT_OS_LINUX pszError = N_("VirtualBox can't operate in VMX root mode. " "Please disable the KVM kernel extension, recompile your kernel and reboot"); #else pszError = N_("VirtualBox can't operate in VMX root mode. Please close all other virtualization programs."); #endif break; case VERR_SVM_IN_USE: #ifdef RT_OS_LINUX pszError = N_("VirtualBox can't enable the AMD-V extension. " "Please disable the KVM kernel extension, recompile your kernel and reboot"); #else pszError = N_("VirtualBox can't enable the AMD-V extension. Please close all other virtualization programs."); #endif break; case VERR_VERSION_MISMATCH: pszError = N_("VMMR0 driver version mismatch. Please terminate all VMs, make sure that " "VBoxNetDHCP is not running and try again. If you still get this error, " "re-install VirtualBox"); break; #ifdef RT_OS_LINUX case VERR_SUPDRV_COMPONENT_NOT_FOUND: pszError = N_("One of the kernel modules was not successfully loaded. Make sure " "that no kernel modules from an older version of VirtualBox exist. " "Then try to recompile and reload the kernel modules by executing " "'/etc/init.d/vboxdrv setup' as root"); break; #endif case VERR_RAW_MODE_INVALID_SMP: pszError = N_("VT-x/AMD-V is either not available on your host or disabled. " "VirtualBox requires this hardware extension to emulate more than one " "guest CPU"); break; case VERR_SUPDRV_KERNEL_TOO_OLD_FOR_VTX: #ifdef RT_OS_LINUX pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x " "extension. Either upgrade your kernel to Linux 2.6.13 or later or disable " "the VT-x extension in the VM settings. Note that without VT-x you have " "to reduce the number of guest CPUs to one"); #else pszError = N_("Because the host kernel is too old, VirtualBox cannot enable the VT-x " "extension. Either upgrade your kernel or disable the VT-x extension in the " "VM settings. Note that without VT-x you have to reduce the number of guest " "CPUs to one"); #endif break; default: pszError = N_("Unknown error creating VM"); break; } vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc); } else { /* * An error occurred at support library initialization time (before the * VM could be created). Set the error message directly using the * initial callback, as the callback list doesn't exist yet. */ const char *pszError; switch (rc) { case VERR_VM_DRIVER_LOAD_ERROR: #ifdef RT_OS_LINUX pszError = N_("VirtualBox kernel driver not loaded. The vboxdrv kernel module " "was either not loaded or /dev/vboxdrv is not set up properly. " "Re-setup the kernel module by executing " "'/etc/init.d/vboxdrv setup' as root"); #else pszError = N_("VirtualBox kernel driver not loaded"); #endif break; case VERR_VM_DRIVER_OPEN_ERROR: pszError = N_("VirtualBox kernel driver cannot be opened"); break; case VERR_VM_DRIVER_NOT_ACCESSIBLE: #ifdef VBOX_WITH_HARDENING /* This should only happen if the executable wasn't hardened - bad code/build. */ pszError = N_("VirtualBox kernel driver not accessible, permission problem. " "Re-install VirtualBox. If you are building it yourself, you " "should make sure it installed correctly and that the setuid " "bit is set on the executables calling VMR3Create."); #else /* This should only happen when mixing builds or with the usual /dev/vboxdrv access issues. */ # if defined(RT_OS_DARWIN) pszError = N_("VirtualBox KEXT is not accessible, permission problem. " "If you have built VirtualBox yourself, make sure that you do not " "have the vboxdrv KEXT from a different build or installation loaded."); # elif defined(RT_OS_LINUX) pszError = N_("VirtualBox kernel driver is not accessible, permission problem. " "If you have built VirtualBox yourself, make sure that you do " "not have the vboxdrv kernel module from a different build or " "installation loaded. Also, make sure the vboxdrv udev rule gives " "you the permission you need to access the device."); # elif defined(RT_OS_WINDOWS) pszError = N_("VirtualBox kernel driver is not accessible, permission problem."); # else /* solaris, freebsd, ++. */ pszError = N_("VirtualBox kernel module is not accessible, permission problem. " "If you have built VirtualBox yourself, make sure that you do " "not have the vboxdrv kernel module from a different install loaded."); # endif #endif break; case VERR_INVALID_HANDLE: /** @todo track down and fix this error. */ case VERR_VM_DRIVER_NOT_INSTALLED: #ifdef RT_OS_LINUX pszError = N_("VirtualBox kernel driver not installed. The vboxdrv kernel module " "was either not loaded or /dev/vboxdrv was not created for some " "reason. Re-setup the kernel module by executing " "'/etc/init.d/vboxdrv setup' as root"); #else pszError = N_("VirtualBox kernel driver not installed"); #endif break; case VERR_NO_MEMORY: pszError = N_("VirtualBox support library out of memory"); break; case VERR_VERSION_MISMATCH: case VERR_VM_DRIVER_VERSION_MISMATCH: pszError = N_("The VirtualBox support driver which is running is from a different " "version of VirtualBox. You can correct this by stopping all " "running instances of VirtualBox and reinstalling the software."); break; default: pszError = N_("Unknown error initializing kernel driver"); AssertMsgFailed(("Add error message for rc=%d (%Rrc)\n", rc, rc)); } vmR3SetErrorU(pUVM, rc, RT_SRC_POS, pszError, rc); } } /* cleanup */ vmR3DestroyUVM(pUVM, 2000); LogFlow(("VMR3Create: returns %Rrc\n", rc)); return rc; } /** * Creates the UVM. * * This will not initialize the support library even if vmR3DestroyUVM * will terminate that. * * @returns VBox status code. * @param cCpus Number of virtual CPUs * @param ppUVM Where to store the UVM pointer. */ static int vmR3CreateUVM(uint32_t cCpus, PUVM *ppUVM) { uint32_t i; /* * Create and initialize the UVM. */ PUVM pUVM = (PUVM)RTMemPageAllocZ(RT_OFFSETOF(UVM, aCpus[cCpus])); AssertReturn(pUVM, VERR_NO_MEMORY); pUVM->u32Magic = UVM_MAGIC; pUVM->cCpus = cCpus; AssertCompile(sizeof(pUVM->vm.s) <= sizeof(pUVM->vm.padding)); pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState; pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError; pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError; pUVM->vm.s.enmHaltMethod = VMHALTMETHOD_BOOTSTRAP; /* Initialize the VMCPU array in the UVM. */ for (i = 0; i < cCpus; i++) { pUVM->aCpus[i].pUVM = pUVM; pUVM->aCpus[i].idCpu = i; } /* Allocate a TLS entry to store the VMINTUSERPERVMCPU pointer. */ int rc = RTTlsAllocEx(&pUVM->vm.s.idxTLS, NULL); AssertRC(rc); if (RT_SUCCESS(rc)) { /* Allocate a halt method event semaphore for each VCPU. */ for (i = 0; i < cCpus; i++) pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT; for (i = 0; i < cCpus; i++) { rc = RTSemEventCreate(&pUVM->aCpus[i].vm.s.EventSemWait); if (RT_FAILURE(rc)) break; } if (RT_SUCCESS(rc)) { rc = RTCritSectInit(&pUVM->vm.s.AtStateCritSect); if (RT_SUCCESS(rc)) { rc = RTCritSectInit(&pUVM->vm.s.AtErrorCritSect); if (RT_SUCCESS(rc)) { /* * Init fundamental (sub-)components - STAM, MMR3Heap and PDMLdr. */ rc = STAMR3InitUVM(pUVM); if (RT_SUCCESS(rc)) { rc = MMR3InitUVM(pUVM); if (RT_SUCCESS(rc)) { rc = PDMR3InitUVM(pUVM); if (RT_SUCCESS(rc)) { /* * Start the emulation threads for all VMCPUs. */ for (i = 0; i < cCpus; i++) { rc = RTThreadCreateF(&pUVM->aCpus[i].vm.s.ThreadEMT, vmR3EmulationThread, &pUVM->aCpus[i], _1M, RTTHREADTYPE_EMULATION, RTTHREADFLAGS_WAITABLE, cCpus > 1 ? "EMT-%u" : "EMT", i); if (RT_FAILURE(rc)) break; pUVM->aCpus[i].vm.s.NativeThreadEMT = RTThreadGetNative(pUVM->aCpus[i].vm.s.ThreadEMT); } if (RT_SUCCESS(rc)) { *ppUVM = pUVM; return VINF_SUCCESS; } /* bail out. */ while (i-- > 0) { /** @todo rainy day: terminate the EMTs. */ } PDMR3TermUVM(pUVM); } MMR3TermUVM(pUVM); } STAMR3TermUVM(pUVM); } RTCritSectDelete(&pUVM->vm.s.AtErrorCritSect); } RTCritSectDelete(&pUVM->vm.s.AtStateCritSect); } } for (i = 0; i < cCpus; i++) { RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait); pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT; } RTTlsFree(pUVM->vm.s.idxTLS); } RTMemPageFree(pUVM); return rc; } /** * Creates and initializes the VM. * * @thread EMT */ static int vmR3CreateU(PUVM pUVM, uint32_t cCpus, PFNCFGMCONSTRUCTOR pfnCFGMConstructor, void *pvUserCFGM) { int rc = VINF_SUCCESS; /* * Load the VMMR0.r0 module so that we can call GVMMR0CreateVM. */ rc = PDMR3LdrLoadVMMR0U(pUVM); if (RT_FAILURE(rc)) { /** @todo we need a cleaner solution for this (VERR_VMX_IN_VMX_ROOT_MODE). * bird: what about moving the message down here? Main picks the first message, right? */ if (rc == VERR_VMX_IN_VMX_ROOT_MODE) return rc; /* proper error message set later on */ return vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("Failed to load VMMR0.r0")); } /* * Request GVMM to create a new VM for us. */ GVMMCREATEVMREQ CreateVMReq; CreateVMReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC; CreateVMReq.Hdr.cbReq = sizeof(CreateVMReq); CreateVMReq.pSession = pUVM->vm.s.pSession; CreateVMReq.pVMR0 = NIL_RTR0PTR; CreateVMReq.pVMR3 = NULL; CreateVMReq.cCpus = cCpus; rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_GVMM_CREATE_VM, 0, &CreateVMReq.Hdr); if (RT_SUCCESS(rc)) { PVM pVM = pUVM->pVM = CreateVMReq.pVMR3; AssertRelease(VALID_PTR(pVM)); AssertRelease(pVM->pVMR0 == CreateVMReq.pVMR0); AssertRelease(pVM->pSession == pUVM->vm.s.pSession); AssertRelease(pVM->cCpus == cCpus); AssertRelease(pVM->offVMCPU == RT_UOFFSETOF(VM, aCpus)); Log(("VMR3Create: Created pUVM=%p pVM=%p pVMR0=%p hSelf=%#x cCpus=%RU32\n", pUVM, pVM, pVM->pVMR0, pVM->hSelf, pVM->cCpus)); /* * Initialize the VM structure and our internal data (VMINT). */ pVM->pUVM = pUVM; for (VMCPUID i = 0; i < pVM->cCpus; i++) { pVM->aCpus[i].pUVCpu = &pUVM->aCpus[i]; pVM->aCpus[i].idCpu = i; pVM->aCpus[i].hNativeThread = pUVM->aCpus[i].vm.s.NativeThreadEMT; Assert(pVM->aCpus[i].hNativeThread != NIL_RTNATIVETHREAD); pUVM->aCpus[i].pVCpu = &pVM->aCpus[i]; pUVM->aCpus[i].pVM = pVM; } /* * Init the configuration. */ rc = CFGMR3Init(pVM, pfnCFGMConstructor, pvUserCFGM); if (RT_SUCCESS(rc)) { rc = CFGMR3QueryBoolDef(CFGMR3GetRoot(pVM), "HwVirtExtForced", &pVM->fHwVirtExtForced, false); if (RT_SUCCESS(rc) && pVM->fHwVirtExtForced) pVM->fHWACCMEnabled = true; /* * If executing in fake suplib mode disable RR3 and RR0 in the config. */ const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE"); if (psz && !strcmp(psz, "fake")) { CFGMR3RemoveValue(CFGMR3GetRoot(pVM), "RawR3Enabled"); CFGMR3InsertInteger(CFGMR3GetRoot(pVM), "RawR3Enabled", 0); CFGMR3RemoveValue(CFGMR3GetRoot(pVM), "RawR0Enabled"); CFGMR3InsertInteger(CFGMR3GetRoot(pVM), "RawR0Enabled", 0); } /* * Make sure the CPU count in the config data matches. */ if (RT_SUCCESS(rc)) { uint32_t cCPUsCfg; rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "NumCPUs", &cCPUsCfg, 1); AssertLogRelMsgRC(rc, ("Configuration error: Querying \"NumCPUs\" as integer failed, rc=%Rrc\n", rc)); if (RT_SUCCESS(rc) && cCPUsCfg != cCpus) { AssertLogRelMsgFailed(("Configuration error: \"NumCPUs\"=%RU32 and VMR3CreateVM::cCpus=%RU32 does not match!\n", cCPUsCfg, cCpus)); rc = VERR_INVALID_PARAMETER; } } if (RT_SUCCESS(rc)) { /* * Init the ring-3 components and ring-3 per cpu data, finishing it off * by a relocation round (intermediate context finalization will do this). */ rc = vmR3InitRing3(pVM, pUVM); if (RT_SUCCESS(rc)) { rc = vmR3InitVMCpu(pVM); if (RT_SUCCESS(rc)) rc = PGMR3FinalizeMappings(pVM); if (RT_SUCCESS(rc)) { LogFlow(("Ring-3 init succeeded\n")); /* * Init the Ring-0 components. */ rc = vmR3InitRing0(pVM); if (RT_SUCCESS(rc)) { /* Relocate again, because some switcher fixups depends on R0 init results. */ VMR3Relocate(pVM, 0); #ifdef VBOX_WITH_DEBUGGER /* * Init the tcp debugger console if we're building * with debugger support. */ void *pvUser = NULL; rc = DBGCTcpCreate(pVM, &pvUser); if ( RT_SUCCESS(rc) || rc == VERR_NET_ADDRESS_IN_USE) { pUVM->vm.s.pvDBGC = pvUser; #endif /* * Init the Guest Context components. */ rc = vmR3InitGC(pVM); if (RT_SUCCESS(rc)) { /* * Now we can safely set the VM halt method to default. */ rc = vmR3SetHaltMethodU(pUVM, VMHALTMETHOD_DEFAULT); if (RT_SUCCESS(rc)) { /* * Set the state and link into the global list. */ vmR3SetState(pVM, VMSTATE_CREATED, VMSTATE_CREATING); pUVM->pNext = g_pUVMsHead; g_pUVMsHead = pUVM; #ifdef LOG_ENABLED RTLogSetCustomPrefixCallback(NULL, vmR3LogPrefixCallback, pUVM); #endif return VINF_SUCCESS; } } #ifdef VBOX_WITH_DEBUGGER DBGCTcpTerminate(pVM, pUVM->vm.s.pvDBGC); pUVM->vm.s.pvDBGC = NULL; } #endif //.. } } vmR3Destroy(pVM); } } //.. /* Clean CFGM. */ int rc2 = CFGMR3Term(pVM); AssertRC(rc2); } /* * Drop all references to VM and the VMCPU structures, then * tell GVMM to destroy the VM. */ pUVM->pVM = NULL; for (VMCPUID i = 0; i < pUVM->cCpus; i++) { pUVM->aCpus[i].pVM = NULL; pUVM->aCpus[i].pVCpu = NULL; } Assert(pUVM->vm.s.enmHaltMethod == VMHALTMETHOD_BOOTSTRAP); if (pUVM->cCpus > 1) { /* Poke the other EMTs since they may have stale pVM and pVCpu references on the stack (see VMR3WaitU for instance) if they've been awakened after VM creation. */ for (VMCPUID i = 1; i < pUVM->cCpus; i++) VMR3NotifyCpuFFU(&pUVM->aCpus[i], 0); RTThreadSleep(RT_MIN(100 + 25 *(pUVM->cCpus - 1), 500)); /* very sophisticated */ } int rc2 = SUPR3CallVMMR0Ex(CreateVMReq.pVMR0, 0 /*idCpu*/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL); AssertRC(rc2); } else vmR3SetErrorU(pUVM, rc, RT_SRC_POS, N_("VM creation failed (GVMM)")); LogFlow(("vmR3CreateU: returns %Rrc\n", rc)); return rc; } /** * Register the calling EMT with GVM. * * @returns VBox status code. * @param pVM The VM handle. * @param idCpu The Virtual CPU ID. */ static DECLCALLBACK(int) vmR3RegisterEMT(PVM pVM, VMCPUID idCpu) { Assert(VMMGetCpuId(pVM) == idCpu); int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, idCpu, VMMR0_DO_GVMM_REGISTER_VMCPU, 0, NULL); if (RT_FAILURE(rc)) LogRel(("idCpu=%u rc=%Rrc\n", idCpu, rc)); return rc; } /** * Initializes all R3 components of the VM */ static int vmR3InitRing3(PVM pVM, PUVM pUVM) { int rc; /* * Register the other EMTs with GVM. */ for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++) { rc = VMR3ReqCallWaitU(pUVM, idCpu, (PFNRT)vmR3RegisterEMT, 2, pVM, idCpu); if (RT_FAILURE(rc)) return rc; } /* * Init all R3 components, the order here might be important. */ rc = MMR3Init(pVM); if (RT_SUCCESS(rc)) { STAM_REG(pVM, &pVM->StatTotalInGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/InGC", STAMUNIT_TICKS_PER_CALL, "Profiling the total time spent in GC."); STAM_REG(pVM, &pVM->StatSwitcherToGC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToGC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherToHC, STAMTYPE_PROFILE_ADV, "/PROF/VM/SwitchToHC", STAMUNIT_TICKS_PER_CALL, "Profiling switching to HC."); STAM_REG(pVM, &pVM->StatSwitcherSaveRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SaveRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherSysEnter, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/SysEnter", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherDebug, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Debug", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherCR0, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR0", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherCR4, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/CR4", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherLgdt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lgdt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherLidt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lidt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherLldt, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/Lldt", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherTSS, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/TSS", STAMUNIT_TICKS_PER_CALL, "Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherJmpCR3, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/JmpCR3", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC."); STAM_REG(pVM, &pVM->StatSwitcherRstrRegs, STAMTYPE_PROFILE_ADV, "/VM/Switcher/ToGC/RstrRegs", STAMUNIT_TICKS_PER_CALL,"Profiling switching to GC."); for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { 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); AssertRC(rc); 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); AssertRC(rc); 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); AssertRC(rc); } STAM_REG(pVM, &pUVM->vm.s.StatReqAllocNew, STAMTYPE_COUNTER, "/VM/Req/AllocNew", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a new packet."); STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRaces, STAMTYPE_COUNTER, "/VM/Req/AllocRaces", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc causing races."); STAM_REG(pVM, &pUVM->vm.s.StatReqAllocRecycled, STAMTYPE_COUNTER, "/VM/Req/AllocRecycled", STAMUNIT_OCCURENCES, "Number of VMR3ReqAlloc returning a recycled packet."); STAM_REG(pVM, &pUVM->vm.s.StatReqFree, STAMTYPE_COUNTER, "/VM/Req/Free", STAMUNIT_OCCURENCES, "Number of VMR3ReqFree calls."); STAM_REG(pVM, &pUVM->vm.s.StatReqFreeOverflow, STAMTYPE_COUNTER, "/VM/Req/FreeOverflow", STAMUNIT_OCCURENCES, "Number of times the request was actually freed."); STAM_REG(pVM, &pUVM->vm.s.StatReqProcessed, STAMTYPE_COUNTER, "/VM/Req/Processed", STAMUNIT_OCCURENCES, "Number of processed requests (any queue)."); 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."); STAM_REG(pVM, &pUVM->vm.s.StatReqPushBackRaces, STAMTYPE_COUNTER, "/VM/Req/PushBackRaces", STAMUNIT_OCCURENCES, "Number of push back races."); rc = CPUMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = HWACCMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = PGMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = REMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = MMR3InitPaging(pVM); if (RT_SUCCESS(rc)) rc = TMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = VMMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = SELMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = TRPMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = CSAMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = PATMR3Init(pVM); if (RT_SUCCESS(rc)) { #ifdef VBOX_WITH_VMI rc = PARAVR3Init(pVM); if (RT_SUCCESS(rc)) { #endif rc = IOMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = EMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = DBGFR3Init(pVM); if (RT_SUCCESS(rc)) { rc = PDMR3Init(pVM); if (RT_SUCCESS(rc)) { rc = PGMR3InitDynMap(pVM); if (RT_SUCCESS(rc)) rc = MMR3HyperInitFinalize(pVM); if (RT_SUCCESS(rc)) rc = PATMR3InitFinalize(pVM); if (RT_SUCCESS(rc)) rc = PGMR3InitFinalize(pVM); if (RT_SUCCESS(rc)) rc = SELMR3InitFinalize(pVM); if (RT_SUCCESS(rc)) rc = TMR3InitFinalize(pVM); if (RT_SUCCESS(rc)) rc = VMMR3InitFinalize(pVM); if (RT_SUCCESS(rc)) rc = REMR3InitFinalize(pVM); if (RT_SUCCESS(rc)) rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING3); if (RT_SUCCESS(rc)) { LogFlow(("vmR3InitRing3: returns %Rrc\n", VINF_SUCCESS)); return VINF_SUCCESS; } int rc2 = PDMR3Term(pVM); AssertRC(rc2); } int rc2 = DBGFR3Term(pVM); AssertRC(rc2); } int rc2 = EMR3Term(pVM); AssertRC(rc2); } int rc2 = IOMR3Term(pVM); AssertRC(rc2); } #ifdef VBOX_WITH_VMI int rc2 = PARAVR3Term(pVM); AssertRC(rc2); } #endif int rc2 = PATMR3Term(pVM); AssertRC(rc2); } int rc2 = CSAMR3Term(pVM); AssertRC(rc2); } int rc2 = TRPMR3Term(pVM); AssertRC(rc2); } int rc2 = SELMR3Term(pVM); AssertRC(rc2); } int rc2 = VMMR3Term(pVM); AssertRC(rc2); } int rc2 = TMR3Term(pVM); AssertRC(rc2); } int rc2 = REMR3Term(pVM); AssertRC(rc2); } int rc2 = PGMR3Term(pVM); AssertRC(rc2); } int rc2 = HWACCMR3Term(pVM); AssertRC(rc2); } //int rc2 = CPUMR3Term(pVM); //AssertRC(rc2); } /* MMR3Term is not called here because it'll kill the heap. */ } LogFlow(("vmR3InitRing3: returns %Rrc\n", rc)); return rc; } /** * Initializes all VM CPU components of the VM */ static int vmR3InitVMCpu(PVM pVM) { int rc = VINF_SUCCESS; int rc2; rc = CPUMR3InitCPU(pVM); if (RT_SUCCESS(rc)) { rc = HWACCMR3InitCPU(pVM); if (RT_SUCCESS(rc)) { rc = PGMR3InitCPU(pVM); if (RT_SUCCESS(rc)) { rc = TMR3InitCPU(pVM); if (RT_SUCCESS(rc)) { rc = VMMR3InitCPU(pVM); if (RT_SUCCESS(rc)) { rc = EMR3InitCPU(pVM); if (RT_SUCCESS(rc)) { LogFlow(("vmR3InitVMCpu: returns %Rrc\n", VINF_SUCCESS)); return VINF_SUCCESS; } rc2 = VMMR3TermCPU(pVM); AssertRC(rc2); } rc2 = TMR3TermCPU(pVM); AssertRC(rc2); } rc2 = PGMR3TermCPU(pVM); AssertRC(rc2); } rc2 = HWACCMR3TermCPU(pVM); AssertRC(rc2); } rc2 = CPUMR3TermCPU(pVM); AssertRC(rc2); } LogFlow(("vmR3InitVMCpu: returns %Rrc\n", rc)); return rc; } /** * Initializes all R0 components of the VM */ static int vmR3InitRing0(PVM pVM) { LogFlow(("vmR3InitRing0:\n")); /* * Check for FAKE suplib mode. */ int rc = VINF_SUCCESS; const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE"); if (!psz || strcmp(psz, "fake")) { /* * Call the VMMR0 component and let it do the init. */ rc = VMMR3InitR0(pVM); } else Log(("vmR3InitRing0: skipping because of VBOX_SUPLIB_FAKE=fake\n")); /* * Do notifications and return. */ if (RT_SUCCESS(rc)) rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_RING0); /** todo: move this to the VMINITCOMPLETED_RING0 notification handler once implemented */ if (RT_SUCCESS(rc)) rc = HWACCMR3InitFinalizeR0(pVM); LogFlow(("vmR3InitRing0: returns %Rrc\n", rc)); return rc; } /** * Initializes all GC components of the VM */ static int vmR3InitGC(PVM pVM) { LogFlow(("vmR3InitGC:\n")); /* * Check for FAKE suplib mode. */ int rc = VINF_SUCCESS; const char *psz = RTEnvGet("VBOX_SUPLIB_FAKE"); if (!psz || strcmp(psz, "fake")) { /* * Call the VMMR0 component and let it do the init. */ rc = VMMR3InitRC(pVM); } else Log(("vmR3InitGC: skipping because of VBOX_SUPLIB_FAKE=fake\n")); /* * Do notifications and return. */ if (RT_SUCCESS(rc)) rc = vmR3InitDoCompleted(pVM, VMINITCOMPLETED_GC); LogFlow(("vmR3InitGC: returns %Rrc\n", rc)); return rc; } /** * Do init completed notifications. * This notifications can fail. * * @param pVM The VM handle. * @param enmWhat What's completed. */ static int vmR3InitDoCompleted(PVM pVM, VMINITCOMPLETED enmWhat) { return VINF_SUCCESS; } /** * Logger callback for inserting a custom prefix. * * @returns Number of chars written. * @param pLogger The logger. * @param pchBuf The output buffer. * @param cchBuf The output buffer size. * @param pvUser Pointer to the UVM structure. */ static DECLCALLBACK(size_t) vmR3LogPrefixCallback(PRTLOGGER pLogger, char *pchBuf, size_t cchBuf, void *pvUser) { AssertReturn(cchBuf >= 2, 0); PUVM pUVM = (PUVM)pvUser; PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS); if (pUVCpu) { static const char s_szHex[17] = "0123456789abcdef"; VMCPUID const idCpu = pUVCpu->idCpu; pchBuf[1] = s_szHex[ idCpu & 15]; pchBuf[0] = s_szHex[(idCpu >> 4) & 15]; } else { pchBuf[0] = 'x'; pchBuf[1] = 'y'; } return 2; } /** * Calls the relocation functions for all VMM components so they can update * any GC pointers. When this function is called all the basic VM members * have been updated and the actual memory relocation have been done * by the PGM/MM. * * This is used both on init and on runtime relocations. * * @param pVM VM handle. * @param offDelta Relocation delta relative to old location. */ VMMR3DECL(void) VMR3Relocate(PVM pVM, RTGCINTPTR offDelta) { LogFlow(("VMR3Relocate: offDelta=%RGv\n", offDelta)); /* * The order here is very important! */ PGMR3Relocate(pVM, offDelta); PDMR3LdrRelocateU(pVM->pUVM, offDelta); PGMR3Relocate(pVM, 0); /* Repeat after PDM relocation. */ CPUMR3Relocate(pVM); HWACCMR3Relocate(pVM); SELMR3Relocate(pVM); VMMR3Relocate(pVM, offDelta); SELMR3Relocate(pVM); /* !hack! fix stack! */ TRPMR3Relocate(pVM, offDelta); PATMR3Relocate(pVM); CSAMR3Relocate(pVM, offDelta); IOMR3Relocate(pVM, offDelta); EMR3Relocate(pVM); TMR3Relocate(pVM, offDelta); DBGFR3Relocate(pVM, offDelta); PDMR3Relocate(pVM, offDelta); } /** * EMT rendezvous worker for VMR3PowerOn. * * @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return * code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOn(PVM pVM, PVMCPU pVCpu, void *pvUser) { LogFlow(("vmR3PowerOn: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu)); Assert(!pvUser); NOREF(pvUser); /* * The first thread thru here tries to change the state. We shouldn't be * called again if this fails. */ if (pVCpu->idCpu == pVM->cCpus - 1) { int rc = vmR3TrySetState(pVM, "VMR3PowerOn", 1, VMSTATE_POWERING_ON, VMSTATE_CREATED); if (RT_FAILURE(rc)) return rc; } VMSTATE enmVMState = VMR3GetState(pVM); AssertMsgReturn(enmVMState == VMSTATE_POWERING_ON, ("%s\n", VMR3GetStateName(enmVMState)), VERR_INTERNAL_ERROR_4); /* * All EMTs changes their state to started. */ VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED); /* * EMT(0) is last thru here and it will make the notification calls * and advance the state. */ if (pVCpu->idCpu == 0) { PDMR3PowerOn(pVM); vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_POWERING_ON); } return VINF_SUCCESS; } /** * Powers on the virtual machine. * * @returns VBox status code. * * @param pVM The VM to power on. * * @thread Any thread. * @vmstate Created * @vmstateto PoweringOn+Running */ VMMR3DECL(int) VMR3PowerOn(PVM pVM) { LogFlow(("VMR3PowerOn: pVM=%p\n", pVM)); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Gather all the EMTs to reduce the init TSC drift and keep * the state changing APIs a bit uniform. */ int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING | VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR, vmR3PowerOn, NULL); LogFlow(("VMR3PowerOn: returns %Rrc\n", rc)); return rc; } /** * Does the suspend notifications. * * @param pVM The VM handle. * @thread EMT(0) */ static void vmR3SuspendDoWork(PVM pVM) { PDMR3Suspend(pVM); } /** * EMT rendezvous worker for VMR3Suspend. * * @returns VERR_VM_INVALID_VM_STATE or VINF_EM_SUSPEND. (This is a strict * return code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3Suspend(PVM pVM, PVMCPU pVCpu, void *pvUser) { LogFlow(("vmR3Suspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu)); Assert(!pvUser); NOREF(pvUser); /* * The first EMT switches the state to suspending. If this fails because * something was racing us in one way or the other, there will be no more * calls and thus the state assertion below is not going to annoy anyone. */ if (pVCpu->idCpu == pVM->cCpus - 1) { int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2, VMSTATE_SUSPENDING, VMSTATE_RUNNING, VMSTATE_SUSPENDING_EXT_LS, VMSTATE_RUNNING_LS); if (RT_FAILURE(rc)) return rc; } VMSTATE enmVMState = VMR3GetState(pVM); AssertMsgReturn( enmVMState == VMSTATE_SUSPENDING || enmVMState == VMSTATE_SUSPENDING_EXT_LS, ("%s\n", VMR3GetStateName(enmVMState)), VERR_INTERNAL_ERROR_4); /* * EMT(0) does the actually suspending *after* all the other CPUs have * been thru here. */ if (pVCpu->idCpu == 0) { vmR3SuspendDoWork(pVM); int rc = vmR3TrySetState(pVM, "VMR3Suspend", 2, VMSTATE_SUSPENDED, VMSTATE_SUSPENDING, VMSTATE_SUSPENDED_EXT_LS, VMSTATE_SUSPENDING_EXT_LS); if (RT_FAILURE(rc)) return VERR_INTERNAL_ERROR_3; } return VINF_EM_SUSPEND; } /** * Suspends a running VM. * * @returns VBox status code. When called on EMT, this will be a strict status * code that has to be propagated up the call stack. * * @param pVM The VM to suspend. * * @thread Any thread. * @vmstate Running or RunningLS * @vmstateto Suspending + Suspended or SuspendingExtLS + SuspendedExtLS */ VMMR3DECL(int) VMR3Suspend(PVM pVM) { LogFlow(("VMR3Suspend: pVM=%p\n", pVM)); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Gather all the EMTs to make sure there are no races before * changing the VM state. */ int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING | VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR, vmR3Suspend, NULL); LogFlow(("VMR3Suspend: returns %Rrc\n", rc)); return rc; } /** * EMT rendezvous worker for VMR3Resume. * * @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict * return code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3Resume(PVM pVM, PVMCPU pVCpu, void *pvUser) { LogFlow(("vmR3Resume: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu)); Assert(!pvUser); NOREF(pvUser); /* * The first thread thru here tries to change the state. We shouldn't be * called again if this fails. */ if (pVCpu->idCpu == pVM->cCpus - 1) { int rc = vmR3TrySetState(pVM, "VMR3Resume", 1, VMSTATE_RESUMING, VMSTATE_SUSPENDED); if (RT_FAILURE(rc)) return rc; } VMSTATE enmVMState = VMR3GetState(pVM); AssertMsgReturn(enmVMState == VMSTATE_RESUMING, ("%s\n", VMR3GetStateName(enmVMState)), VERR_INTERNAL_ERROR_4); #if 0 /* * All EMTs changes their state to started. */ VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED); #endif /* * EMT(0) is last thru here and it will make the notification calls * and advance the state. */ if (pVCpu->idCpu == 0) { PDMR3Resume(pVM); vmR3SetState(pVM, VMSTATE_RUNNING, VMSTATE_RESUMING); pVM->vm.s.fTeleportedAndNotFullyResumedYet = false; } return VINF_EM_RESUME; } /** * Resume VM execution. * * @returns VBox status code. When called on EMT, this will be a strict status * code that has to be propagated up the call stack. * * @param pVM The VM to resume. * * @thread Any thread. * @vmstate Suspended * @vmstateto Running */ VMMR3DECL(int) VMR3Resume(PVM pVM) { LogFlow(("VMR3Resume: pVM=%p\n", pVM)); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Gather all the EMTs to make sure there are no races before * changing the VM state. */ int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING | VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR, vmR3Resume, NULL); LogFlow(("VMR3Resume: returns %Rrc\n", rc)); return rc; } /** * EMT rendezvous worker for VMR3Save and VMR3Teleport that suspends the VM * after the live step has been completed. * * @returns VERR_VM_INVALID_VM_STATE or VINF_EM_RESUME. (This is a strict * return code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser The pfSuspended argument of vmR3SaveTeleport. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoSuspend(PVM pVM, PVMCPU pVCpu, void *pvUser) { LogFlow(("vmR3LiveDoSuspend: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu)); bool *pfSuspended = (bool *)pvUser; /* * The first thread thru here tries to change the state. We shouldn't be * called again if this fails. */ if (pVCpu->idCpu == pVM->cCpus - 1U) { PUVM pUVM = pVM->pUVM; int rc; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); VMSTATE enmVMState = pVM->enmVMState; switch (enmVMState) { case VMSTATE_RUNNING_LS: vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RUNNING_LS); rc = VINF_SUCCESS; break; case VMSTATE_SUSPENDED_EXT_LS: case VMSTATE_SUSPENDED_LS: /* (via reset) */ rc = VINF_SUCCESS; break; case VMSTATE_DEBUGGING_LS: rc = VERR_TRY_AGAIN; break; case VMSTATE_OFF_LS: vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_OFF_LS); rc = VERR_SSM_LIVE_POWERED_OFF; break; case VMSTATE_FATAL_ERROR_LS: vmR3SetStateLocked(pVM, pUVM, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS); rc = VERR_SSM_LIVE_FATAL_ERROR; break; case VMSTATE_GURU_MEDITATION_LS: vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS); rc = VERR_SSM_LIVE_GURU_MEDITATION; break; case VMSTATE_POWERING_OFF_LS: case VMSTATE_SUSPENDING_EXT_LS: case VMSTATE_RESETTING_LS: default: AssertMsgFailed(("%s\n", VMR3GetStateName(enmVMState))); rc = VERR_INTERNAL_ERROR_3; break; } RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); if (RT_FAILURE(rc)) { LogFlow(("vmR3LiveDoSuspend: returns %Rrc (state was %s)\n", rc, VMR3GetStateName(enmVMState))); return rc; } } VMSTATE enmVMState = VMR3GetState(pVM); AssertMsgReturn(enmVMState == VMSTATE_SUSPENDING_LS, ("%s\n", VMR3GetStateName(enmVMState)), VERR_INTERNAL_ERROR_4); /* * Only EMT(0) have work to do since it's last thru here. */ if (pVCpu->idCpu == 0) { vmR3SuspendDoWork(pVM); int rc = vmR3TrySetState(pVM, "VMR3Suspend", 1, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS); if (RT_FAILURE(rc)) return VERR_INTERNAL_ERROR_3; *pfSuspended = true; } return VINF_EM_SUSPEND; } /** * EMT rendezvous worker that VMR3Save and VMR3Teleport uses to clean up a * SSMR3LiveDoStep1 failure. * * Doing this as a rendezvous operation avoids all annoying transition * states. * * @returns VERR_VM_INVALID_VM_STATE, VINF_SUCCESS or some specific VERR_SSM_* * status code. (This is a strict return code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3LiveDoStep1Cleanup(PVM pVM, PVMCPU pVCpu, void *pvUser) { LogFlow(("vmR3LiveDoStep1Cleanup: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu)); NOREF(pvUser); NOREF(pVCpu); int rc = vmR3TrySetState(pVM, "vmR3LiveDoStep1Cleanup", 6, VMSTATE_OFF, VMSTATE_OFF_LS, VMSTATE_FATAL_ERROR, VMSTATE_FATAL_ERROR_LS, VMSTATE_GURU_MEDITATION, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING, VMSTATE_RUNNING_LS, VMSTATE_SUSPENDED, VMSTATE_SUSPENDED_EXT_LS, VMSTATE_DEBUGGING, VMSTATE_DEBUGGING_LS); if (rc == 1) rc = VERR_SSM_LIVE_POWERED_OFF; else if (rc == 2) rc = VERR_SSM_LIVE_FATAL_ERROR; else if (rc == 3) rc = VERR_SSM_LIVE_GURU_MEDITATION; else if (rc > 0) rc = VINF_SUCCESS; return rc; } /** * EMT(0) worker for VMR3Save and VMR3Teleport that completes the live save. * * @returns VBox status code. * @retval VINF_SSM_LIVE_SUSPENDED if VMR3Suspend was called. * * @param pVM The VM handle. * @param pSSM The handle of saved state operation. * * @thread EMT(0) */ static DECLCALLBACK(int) vmR3LiveDoStep2(PVM pVM, PSSMHANDLE pSSM) { LogFlow(("vmR3LiveDoStep2: pVM=%p pSSM=%p\n", pVM, pSSM)); VM_ASSERT_EMT0(pVM); /* * Advance the state and mark if VMR3Suspend was called. */ int rc = VINF_SUCCESS; VMSTATE enmVMState = VMR3GetState(pVM); if (enmVMState == VMSTATE_SUSPENDED_LS) vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_LS); else { if (enmVMState != VMSTATE_SAVING) vmR3SetState(pVM, VMSTATE_SAVING, VMSTATE_SUSPENDED_EXT_LS); rc = VINF_SSM_LIVE_SUSPENDED; } /* * Finish up and release the handle. Careful with the status codes. */ int rc2 = SSMR3LiveDoStep2(pSSM); if (rc == VINF_SUCCESS || (RT_FAILURE(rc2) && RT_SUCCESS(rc))) rc = rc2; rc2 = SSMR3LiveDone(pSSM); if (rc == VINF_SUCCESS || (RT_FAILURE(rc2) && RT_SUCCESS(rc))) rc = rc2; /* * Advance to the final state and return. */ vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING); Assert(rc > VINF_EM_LAST || rc < VINF_EM_FIRST); return rc; } /** * Worker for vmR3SaveTeleport that validates the state and calls SSMR3Save or * SSMR3LiveSave. * * @returns VBox status code. * * @param pVM The VM handle. * @param cMsMaxDowntime The maximum downtime given as milliseconds. * @param pszFilename The name of the file. NULL if pStreamOps is used. * @param pStreamOps The stream methods. NULL if pszFilename is used. * @param pvStreamOpsUser The user argument to the stream methods. * @param enmAfter What to do afterwards. * @param pfnProgress Progress callback. Optional. * @param pvProgressUser User argument for the progress callback. * @param ppSSM Where to return the saved state handle in case of a * live snapshot scenario. * @thread EMT */ static DECLCALLBACK(int) vmR3Save(PVM pVM, uint32_t cMsMaxDowntime, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser, SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void *pvProgressUser, PSSMHANDLE *ppSSM) { LogFlow(("vmR3Save: pVM=%p cMsMaxDowntime=%u pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p enmAfter=%d pfnProgress=%p pvProgressUser=%p ppSSM=%p\n", pVM, cMsMaxDowntime, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM)); /* * Validate input. */ AssertPtrNull(pszFilename); AssertPtrNull(pStreamOps); AssertPtr(pVM); Assert( enmAfter == SSMAFTER_DESTROY || enmAfter == SSMAFTER_CONTINUE || enmAfter == SSMAFTER_TELEPORT); AssertPtr(ppSSM); *ppSSM = NULL; /* * Change the state and perform/start the saving. */ int rc = vmR3TrySetState(pVM, "VMR3Save", 2, VMSTATE_SAVING, VMSTATE_SUSPENDED, VMSTATE_RUNNING_LS, VMSTATE_RUNNING); if (rc == 1 && enmAfter != SSMAFTER_TELEPORT) { Assert(!pStreamOps); rc = SSMR3Save(pVM, pszFilename, enmAfter, pfnProgress, pvProgressUser); vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_SAVING); } else if (rc == 2 || enmAfter == SSMAFTER_TELEPORT) { if (enmAfter == SSMAFTER_TELEPORT) pVM->vm.s.fTeleportedAndNotFullyResumedYet = true; rc = SSMR3LiveSave(pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, ppSSM); /* (We're not subject to cancellation just yet.) */ } else Assert(RT_FAILURE(rc)); return rc; } /** * Commmon worker for VMR3Save and VMR3Teleport. * * @returns VBox status code. * * @param pVM The VM handle. * @param cMsMaxDowntime The maximum downtime given as milliseconds. * @param pszFilename The name of the file. NULL if pStreamOps is used. * @param pStreamOps The stream methods. NULL if pszFilename is used. * @param pvStreamOpsUser The user argument to the stream methods. * @param enmAfter What to do afterwards. * @param pfnProgress Progress callback. Optional. * @param pvProgressUser User argument for the progress callback. * @param pfSuspended Set if we suspended the VM. * * @thread Non-EMT */ static int vmR3SaveTeleport(PVM pVM, uint32_t cMsMaxDowntime, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser, SSMAFTER enmAfter, PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool *pfSuspended) { /* * Request the operation in EMT(0). */ PSSMHANDLE pSSM; int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /*idDstCpu*/, (PFNRT)vmR3Save, 9, pVM, cMsMaxDowntime, pszFilename, pStreamOps, pvStreamOpsUser, enmAfter, pfnProgress, pvProgressUser, &pSSM); if ( RT_SUCCESS(rc) && pSSM) { /* * Live snapshot. * * The state handling here is kind of tricky, doing it on EMT(0) helps * a bit. See the VMSTATE diagram for details. */ rc = SSMR3LiveDoStep1(pSSM); if (RT_SUCCESS(rc)) { if (VMR3GetState(pVM) != VMSTATE_SAVING) for (;;) { /* Try suspend the VM. */ rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING | VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR, vmR3LiveDoSuspend, pfSuspended); if (rc != VERR_TRY_AGAIN) break; /* Wait for the state to change. */ RTThreadSleep(250); /** @todo Live Migration: fix this polling wait by some smart use of multiple release event semaphores.. */ } if (RT_SUCCESS(rc)) rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /*idDstCpu*/, (PFNRT)vmR3LiveDoStep2, 2, pVM, pSSM); else { int rc2 = VMR3ReqCallWaitU(pVM->pUVM, 0 /*idDstCpu*/, (PFNRT)SSMR3LiveDone, 1, pSSM); AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc)); } } else { int rc2 = VMR3ReqCallWaitU(pVM->pUVM, 0 /*idDstCpu*/, (PFNRT)SSMR3LiveDone, 1, pSSM); AssertMsg(rc2 == rc, ("%Rrc != %Rrc\n", rc2, rc)); rc2 = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3LiveDoStep1Cleanup, NULL); if (RT_FAILURE(rc2) && rc == VERR_SSM_CANCELLED) rc = rc2; } } return rc; } /** * Save current VM state. * * Can be used for both saving the state and creating snapshots. * * When called for a VM in the Running state, the saved state is created live * and the VM is only suspended when the final part of the saving is preformed. * The VM state will not be restored to Running in this case and it's up to the * caller to call VMR3Resume if this is desirable. (The rational is that the * caller probably wish to reconfigure the disks before resuming the VM.) * * @returns VBox status code. * * @param pVM The VM which state should be saved. * @param pszFilename The name of the save state file. * @param fContinueAfterwards Whether continue execution afterwards or not. * When in doubt, set this to true. * @param pfnProgress Progress callback. Optional. * @param pvUser User argument for the progress callback. * * @thread Non-EMT. * @vmstate Suspended or Running * @vmstateto Saving+Suspended or * RunningLS+SuspeningLS+SuspendedLS+Saving+Suspended. */ VMMR3DECL(int) VMR3Save(PVM pVM, const char *pszFilename, bool fContinueAfterwards, PFNVMPROGRESS pfnProgress, void *pvUser) { LogFlow(("VMR3Save: pVM=%p pszFilename=%p:{%s} fContinueAfterwards=%RTbool pfnProgress=%p pvUser=%p\n", pVM, pszFilename, pszFilename, fContinueAfterwards, pfnProgress, pvUser)); /* * Validate input. */ VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); VM_ASSERT_OTHER_THREAD(pVM); AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); AssertReturn(*pszFilename, VERR_INVALID_PARAMETER); AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER); /* * Join paths with VMR3Teleport. */ bool fSuspended = false; /** @todo need this for live snapshots. */ SSMAFTER enmAfter = fContinueAfterwards ? SSMAFTER_CONTINUE : SSMAFTER_DESTROY; int rc = vmR3SaveTeleport(pVM, 250 /*cMsMaxDowntime*/, pszFilename, NULL /*pStreamOps*/, NULL /*pvStreamOpsUser*/, enmAfter, pfnProgress, pvUser, &fSuspended); LogFlow(("VMR3Save: returns %Rrc\n", rc)); return rc; } /** * Teleport the VM (aka live migration). * * @returns VBox status code. * * @param pVM The VM which state should be saved. * @param cMsMaxDowntime The maximum downtime given as milliseconds. * @param pStreamOps The stream methods. * @param pvStreamOpsUser The user argument to the stream methods. * @param pfnProgress Progress callback. Optional. * @param pvProgressUser User argument for the progress callback. * @param pfSuspended Set if we suspended the VM. * * @thread Non-EMT. * @vmstate Suspended or Running * @vmstateto Saving+Suspended or * RunningLS+SuspeningLS+SuspendedLS+Saving+Suspended. */ VMMR3DECL(int) VMR3Teleport(PVM pVM, uint32_t cMsMaxDowntime, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser, PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool *pfSuspended) { LogFlow(("VMR3Teleport: pVM=%p cMsMaxDowntime=%u pStreamOps=%p pvStreamOps=%p pfnProgress=%p pvProgressUser=%p\n", pVM, cMsMaxDowntime, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser)); /* * Validate input. */ AssertPtr(pfSuspended); *pfSuspended = false; VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); VM_ASSERT_OTHER_THREAD(pVM); AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER); AssertPtrNullReturn(pfnProgress, VERR_INVALID_POINTER); /* * Join paths with VMR3Save. */ int rc = vmR3SaveTeleport(pVM, cMsMaxDowntime, NULL /*pszFilename*/, pStreamOps, pvStreamOpsUser, SSMAFTER_TELEPORT, pfnProgress, pvProgressUser, pfSuspended); LogFlow(("VMR3Teleport: returns %Rrc (*pfSuspended=%RTbool)\n", rc, *pfSuspended)); return rc; } /** * EMT(0) worker for VMR3LoadFromFile and VMR3LoadFromStream. * * @returns VBox status code. * * @param pVM The VM handle. * @param pszFilename The name of the file. NULL if pStreamOps is used. * @param pStreamOps The stream methods. NULL if pszFilename is used. * @param pvStreamOpsUser The user argument to the stream methods. * @param pfnProgress Progress callback. Optional. * @param pvUser User argument for the progress callback. * @param fTeleporting Indicates whether we're teleporting or not. * * @thread EMT. */ static DECLCALLBACK(int) vmR3Load(PVM pVM, const char *pszFilename, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser, PFNVMPROGRESS pfnProgress, void *pvProgressUser, bool fTeleporting) { LogFlow(("vmR3Load: pVM=%p pszFilename=%p:{%s} pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p fTeleporting=%RTbool\n", pVM, pszFilename, pszFilename, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, fTeleporting)); /* * Validate input (paranoia). */ AssertPtr(pVM); AssertPtrNull(pszFilename); AssertPtrNull(pStreamOps); AssertPtrNull(pfnProgress); /* * Change the state and perform the load. * * Always perform a relocation round afterwards to make sure hypervisor * selectors and such are correct. */ int rc = vmR3TrySetState(pVM, "VMR3Load", 2, VMSTATE_LOADING, VMSTATE_CREATED, VMSTATE_LOADING, VMSTATE_SUSPENDED); if (RT_FAILURE(rc)) return rc; pVM->vm.s.fTeleportedAndNotFullyResumedYet = fTeleporting; uint32_t cErrorsPriorToSave = VMR3GetErrorCount(pVM); rc = SSMR3Load(pVM, pszFilename, pStreamOps, pvStreamOpsUser, SSMAFTER_RESUME, pfnProgress, pvProgressUser); if (RT_SUCCESS(rc)) { VMR3Relocate(pVM, 0 /*offDelta*/); vmR3SetState(pVM, VMSTATE_SUSPENDED, VMSTATE_LOADING); } else { pVM->vm.s.fTeleportedAndNotFullyResumedYet = false; vmR3SetState(pVM, VMSTATE_LOAD_FAILURE, VMSTATE_LOADING); if (cErrorsPriorToSave == VMR3GetErrorCount(pVM)) rc = VMSetError(pVM, rc, RT_SRC_POS, N_("Unable to restore the virtual machine's saved state from '%s'. " "It may be damaged or from an older version of VirtualBox. " "Please discard the saved state before starting the virtual machine"), pszFilename); } return rc; } /** * Loads a VM state into a newly created VM or a one that is suspended. * * To restore a saved state on VM startup, call this function and then resume * the VM instead of powering it on. * * @returns VBox status code. * * @param pVM The VM handle. * @param pszFilename The name of the save state file. * @param pfnProgress Progress callback. Optional. * @param pvUser User argument for the progress callback. * * @thread Any thread. * @vmstate Created, Suspended * @vmstateto Loading+Suspended */ VMMR3DECL(int) VMR3LoadFromFile(PVM pVM, const char *pszFilename, PFNVMPROGRESS pfnProgress, void *pvUser) { LogFlow(("VMR3LoadFromFile: pVM=%p pszFilename=%p:{%s} pfnProgress=%p pvUser=%p\n", pVM, pszFilename, pszFilename, pfnProgress, pvUser)); /* * Validate input. */ VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); /* * Forward the request to EMT(0). No need to setup a rendezvous here * since there is no execution taking place when this call is allowed. */ int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /*idDstCpu*/, (PFNRT)vmR3Load, 7, pVM, pszFilename, (uintptr_t)NULL /*pStreamOps*/, (uintptr_t)NULL /*pvStreamOpsUser*/, pfnProgress, pvUser, false /*fTeleporting*/); LogFlow(("VMR3LoadFromFile: returns %Rrc\n", rc)); return rc; } /** * VMR3LoadFromFile for arbritrary file streams. * * @returns VBox status code. * * @param pVM The VM handle. * @param pStreamOps The stream methods. * @param pvStreamOpsUser The user argument to the stream methods. * @param pfnProgress Progress callback. Optional. * @param pvProgressUser User argument for the progress callback. * * @thread Any thread. * @vmstate Created, Suspended * @vmstateto Loading+Suspended */ VMMR3DECL(int) VMR3LoadFromStream(PVM pVM, PCSSMSTRMOPS pStreamOps, void *pvStreamOpsUser, PFNVMPROGRESS pfnProgress, void *pvProgressUser) { LogFlow(("VMR3LoadFromStream: pVM=%p pStreamOps=%p pvStreamOpsUser=%p pfnProgress=%p pvProgressUser=%p\n", pVM, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser)); /* * Validate input. */ VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); AssertPtrReturn(pStreamOps, VERR_INVALID_POINTER); /* * Forward the request to EMT(0). No need to setup a rendezvous here * since there is no execution taking place when this call is allowed. */ int rc = VMR3ReqCallWaitU(pVM->pUVM, 0 /*idDstCpu*/, (PFNRT)vmR3Load, 7, pVM, (uintptr_t)NULL /*pszFilename*/, pStreamOps, pvStreamOpsUser, pfnProgress, pvProgressUser, true /*fTeleporting*/); LogFlow(("VMR3LoadFromStream: returns %Rrc\n", rc)); return rc; } /** * EMT rendezvous worker for VMR3PowerOff. * * @returns VERR_VM_INVALID_VM_STATE or VINF_EM_OFF. (This is a strict * return code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3PowerOff(PVM pVM, PVMCPU pVCpu, void *pvUser) { LogFlow(("vmR3PowerOff: pVM=%p pVCpu=%p/#%u\n", pVM, pVCpu, pVCpu->idCpu)); Assert(!pvUser); NOREF(pvUser); /* * The first EMT thru here will change the state to PoweringOff. */ if (pVCpu->idCpu == pVM->cCpus - 1) { int rc = vmR3TrySetState(pVM, "VMR3PowerOff", 10, VMSTATE_POWERING_OFF, VMSTATE_RUNNING, VMSTATE_POWERING_OFF, VMSTATE_SUSPENDED, VMSTATE_POWERING_OFF, VMSTATE_DEBUGGING, VMSTATE_POWERING_OFF, VMSTATE_LOAD_FAILURE, VMSTATE_POWERING_OFF, VMSTATE_GURU_MEDITATION, VMSTATE_POWERING_OFF, VMSTATE_FATAL_ERROR, VMSTATE_POWERING_OFF, VMSTATE_CREATED, /** @todo update the diagram! */ VMSTATE_POWERING_OFF_LS, VMSTATE_RUNNING_LS, VMSTATE_POWERING_OFF_LS, VMSTATE_DEBUGGING_LS, VMSTATE_POWERING_OFF_LS, VMSTATE_GURU_MEDITATION_LS, VMSTATE_POWERING_OFF_LS, VMSTATE_FATAL_ERROR_LS); if (RT_FAILURE(rc)) return rc; if (rc >= 7) SSMR3Cancel(pVM); } /* * Check the state. */ VMSTATE enmVMState = VMR3GetState(pVM); AssertMsgReturn( enmVMState == VMSTATE_POWERING_OFF || enmVMState == VMSTATE_POWERING_OFF_LS, ("%s\n", VMR3GetStateName(enmVMState)), VERR_VM_INVALID_VM_STATE); /* * EMT(0) does the actual power off work here *after* all the other EMTs * have been thru and entered the STOPPED state. */ VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STOPPED); if (pVCpu->idCpu == 0) { /* * For debugging purposes, we will log a summary of the guest state at this point. */ if (enmVMState != VMSTATE_GURU_MEDITATION) { /** @todo SMP support? */ PVMCPU pVCpu = VMMGetCpu(pVM); /** @todo make the state dumping at VMR3PowerOff optional. */ RTLogRelPrintf("****************** Guest state at power off ******************\n"); DBGFR3Info(pVM, "cpumguest", "verbose", DBGFR3InfoLogRelHlp()); RTLogRelPrintf("***\n"); DBGFR3Info(pVM, "mode", NULL, DBGFR3InfoLogRelHlp()); RTLogRelPrintf("***\n"); DBGFR3Info(pVM, "activetimers", NULL, DBGFR3InfoLogRelHlp()); RTLogRelPrintf("***\n"); DBGFR3Info(pVM, "gdt", NULL, DBGFR3InfoLogRelHlp()); /** @todo dump guest call stack. */ #if 1 // "temporary" while debugging #1589 RTLogRelPrintf("***\n"); uint32_t esp = CPUMGetGuestESP(pVCpu); if ( CPUMGetGuestSS(pVCpu) == 0 && esp < _64K) { uint8_t abBuf[PAGE_SIZE]; RTLogRelPrintf("***\n" "ss:sp=0000:%04x ", esp); uint32_t Start = esp & ~(uint32_t)63; int rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, Start, 0x100); if (RT_SUCCESS(rc)) RTLogRelPrintf("0000:%04x TO 0000:%04x:\n" "%.*Rhxd\n", Start, Start + 0x100 - 1, 0x100, abBuf); else RTLogRelPrintf("rc=%Rrc\n", rc); /* grub ... */ if (esp < 0x2000 && esp > 0x1fc0) { rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, 0x8000, 0x800); if (RT_SUCCESS(rc)) RTLogRelPrintf("0000:8000 TO 0000:87ff:\n" "%.*Rhxd\n", 0x800, abBuf); } /* microsoft cdrom hang ... */ if (true) { rc = PGMPhysSimpleReadGCPhys(pVM, abBuf, 0x8000, 0x200); if (RT_SUCCESS(rc)) RTLogRelPrintf("2000:0000 TO 2000:01ff:\n" "%.*Rhxd\n", 0x200, abBuf); } } #endif RTLogRelPrintf("************** End of Guest state at power off ***************\n"); } /* * Perform the power off notifications and advance the state to * Off or OffLS. */ PDMR3PowerOff(pVM); PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); enmVMState = pVM->enmVMState; if (enmVMState == VMSTATE_POWERING_OFF_LS) vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF_LS, VMSTATE_POWERING_OFF_LS); else vmR3SetStateLocked(pVM, pUVM, VMSTATE_OFF, VMSTATE_POWERING_OFF); RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); } return VINF_EM_OFF; } /** * Power off the VM. * * @returns VBox status code. When called on EMT, this will be a strict status * code that has to be propagated up the call stack. * * @param pVM The handle of the VM to be powered off. * * @thread Any thread. * @vmstate Suspended, Running, Guru Meditation, Load Failure * @vmstateto Off or OffLS */ VMMR3DECL(int) VMR3PowerOff(PVM pVM) { LogFlow(("VMR3PowerOff: pVM=%p\n", pVM)); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Gather all the EMTs to make sure there are no races before * changing the VM state. */ int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING | VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR, vmR3PowerOff, NULL); LogFlow(("VMR3PowerOff: returns %Rrc\n", rc)); return rc; } /** * Destroys the VM. * * The VM must be powered off (or never really powered on) to call this * function. The VM handle is destroyed and can no longer be used up successful * return. * * @returns VBox status code. * * @param pVM The handle of the VM which should be destroyed. * * @thread EMT(0) or any none emulation thread. * @vmstate Off, Created * @vmstateto N/A */ VMMR3DECL(int) VMR3Destroy(PVM pVM) { LogFlow(("VMR3Destroy: pVM=%p\n", pVM)); /* * Validate input. */ if (!pVM) return VERR_INVALID_PARAMETER; VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); Assert(VMMGetCpuId(pVM) == 0 || VMMGetCpuId(pVM) == NIL_VMCPUID); /* * Change VM state to destroying and unlink the VM. */ int rc = vmR3TrySetState(pVM, "VMR3Destroy", 1, VMSTATE_DESTROYING, VMSTATE_OFF); if (RT_FAILURE(rc)) return rc; /** @todo lock this when we start having multiple machines in a process... */ PUVM pUVM = pVM->pUVM; AssertPtr(pUVM); if (g_pUVMsHead == pUVM) g_pUVMsHead = pUVM->pNext; else { PUVM pPrev = g_pUVMsHead; while (pPrev && pPrev->pNext != pUVM) pPrev = pPrev->pNext; AssertMsgReturn(pPrev, ("pUVM=%p / pVM=%p is INVALID!\n", pUVM, pVM), VERR_INVALID_PARAMETER); pPrev->pNext = pUVM->pNext; } pUVM->pNext = NULL; /* * Notify registered at destruction listeners. */ vmR3AtDtor(pVM); /* * EMT(0) does the final cleanup, so if we're it calling VMR3Destroy then * we'll have to postpone parts of it till later. Otherwise, call * vmR3Destroy on each of the EMTs in ending with EMT(0) doing the bulk * of the cleanup. */ if (VMMGetCpuId(pVM) == 0) { pUVM->vm.s.fEMTDoesTheCleanup = true; pUVM->vm.s.fTerminateEMT = true; VM_FF_SET(pVM, VM_FF_TERMINATE); /* Terminate the other EMTs. */ for (VMCPUID idCpu = 1; idCpu < pVM->cCpus; idCpu++) { int rc = VMR3ReqCallWaitU(pUVM, idCpu, (PFNRT)vmR3Destroy, 1, pVM); AssertLogRelRC(rc); } } else { /* vmR3Destroy on all EMTs, ending with EMT(0). */ int rc = VMR3ReqCallWaitU(pUVM, VMCPUID_ALL_REVERSE, (PFNRT)vmR3Destroy, 1, pVM); AssertLogRelRC(rc); /* Wait for EMTs and destroy the UVM. */ vmR3DestroyUVM(pUVM, 30000); } LogFlow(("VMR3Destroy: returns VINF_SUCCESS\n")); return VINF_SUCCESS; } /** * Internal destruction worker. * * This is either called from VMR3Destroy via VMR3ReqCallU or from * vmR3EmulationThreadWithId when EMT(0) terminates after having called * VMR3Destroy(). * * When called on EMT(0), it will performed the great bulk of the destruction. * When called on the other EMTs, they will do nothing and the whole purpose is * to return VINF_EM_TERMINATE so they break out of their run loops. * * @returns VINF_EM_TERMINATE. * @param pVM The VM handle. */ DECLCALLBACK(int) vmR3Destroy(PVM pVM) { PUVM pUVM = pVM->pUVM; PVMCPU pVCpu = VMMGetCpu(pVM); Assert(pVCpu); LogFlow(("vmR3Destroy: pVM=%p pUVM=%p pVCpu=%p idCpu=%u\n", pVM, pUVM, pVCpu, pVCpu->idCpu)); /* * Only VCPU 0 does the full cleanup. */ if (pVCpu->idCpu == 0) { /* * Dump statistics to the log. */ #if defined(VBOX_WITH_STATISTICS) || defined(LOG_ENABLED) RTLogFlags(NULL, "nodisabled nobuffered"); #endif #ifdef VBOX_WITH_STATISTICS STAMR3Dump(pVM, "*"); #else LogRel(("************************* Statistics *************************\n")); STAMR3DumpToReleaseLog(pVM, "*"); LogRel(("********************* End of statistics **********************\n")); #endif /* * Destroy the VM components. */ int rc = TMR3Term(pVM); AssertRC(rc); #ifdef VBOX_WITH_DEBUGGER rc = DBGCTcpTerminate(pVM, pUVM->vm.s.pvDBGC); pUVM->vm.s.pvDBGC = NULL; #endif AssertRC(rc); rc = DBGFR3Term(pVM); AssertRC(rc); rc = PDMR3Term(pVM); AssertRC(rc); rc = EMR3Term(pVM); AssertRC(rc); rc = IOMR3Term(pVM); AssertRC(rc); rc = CSAMR3Term(pVM); AssertRC(rc); rc = PATMR3Term(pVM); AssertRC(rc); rc = TRPMR3Term(pVM); AssertRC(rc); rc = SELMR3Term(pVM); AssertRC(rc); rc = REMR3Term(pVM); AssertRC(rc); rc = HWACCMR3Term(pVM); AssertRC(rc); rc = PGMR3Term(pVM); AssertRC(rc); rc = VMMR3Term(pVM); /* Terminates the ring-0 code! */ AssertRC(rc); rc = CPUMR3Term(pVM); AssertRC(rc); SSMR3Term(pVM); rc = PDMR3CritSectTerm(pVM); AssertRC(rc); rc = MMR3Term(pVM); AssertRC(rc); /* * We're done in this thread (EMT). */ ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true); ASMAtomicWriteU32(&pVM->fGlobalForcedActions, VM_FF_TERMINATE); LogFlow(("vmR3Destroy: returning %Rrc\n", VINF_EM_TERMINATE)); } return VINF_EM_TERMINATE; } /** * Called at the end of the EMT procedure to take care of the final cleanup. * * Currently only EMT(0) will do work here. It will destroy the shared VM * structure if it is still around. If EMT(0) was the caller of VMR3Destroy it * will destroy UVM and nothing will be left behind upon exit. But if some * other thread is calling VMR3Destroy, they will clean up UVM after all EMTs * has exitted. * * @param pUVM The UVM handle. * @param idCpu The virtual CPU id. */ void vmR3DestroyFinalBitFromEMT(PUVM pUVM, VMCPUID idCpu) { /* * Only EMT(0) has work to do here. */ if (idCpu != 0) return; Assert( !pUVM->pVM || VMMGetCpuId(pUVM->pVM) == 0); /* * If we have a shared VM structure, change its state to Terminated and * tell GVMM to destroy it. */ if (pUVM->pVM) { vmR3SetState(pUVM->pVM, VMSTATE_TERMINATED, VMSTATE_DESTROYING); int rc = SUPR3CallVMMR0Ex(pUVM->pVM->pVMR0, 0 /*idCpu*/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL); AssertLogRelRC(rc); pUVM->pVM = NULL; } /* * If EMT(0) called VMR3Destroy, then it will destroy UVM as well. */ if (pUVM->vm.s.fEMTDoesTheCleanup) vmR3DestroyUVM(pUVM, 30000); } /** * Destroys the UVM portion. * * This is called as the final step in the VM destruction or as the cleanup * in case of a creation failure. If EMT(0) called VMR3Destroy, meaning * VMINTUSERPERVM::fEMTDoesTheCleanup is true, it will call this as * vmR3DestroyFinalBitFromEMT completes. * * @param pVM VM Handle. * @param cMilliesEMTWait The number of milliseconds to wait for the emulation * threads. */ static void vmR3DestroyUVM(PUVM pUVM, uint32_t cMilliesEMTWait) { /* * Signal termination of each the emulation threads and * wait for them to complete. */ /* Signal them. */ ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true); for (VMCPUID i = 0; i < pUVM->cCpus; i++) { ASMAtomicUoWriteBool(&pUVM->aCpus[i].vm.s.fTerminateEMT, true); if (pUVM->pVM) VM_FF_SET(pUVM->pVM, VM_FF_TERMINATE); VMR3NotifyGlobalFFU(pUVM, VMNOTIFYFF_FLAGS_DONE_REM); RTSemEventSignal(pUVM->aCpus[i].vm.s.EventSemWait); } /* Wait for them. */ uint64_t NanoTS = RTTimeNanoTS(); RTTHREAD hSelf = RTThreadSelf(); ASMAtomicUoWriteBool(&pUVM->vm.s.fTerminateEMT, true); for (VMCPUID i = 0; i < pUVM->cCpus; i++) { RTTHREAD hThread = pUVM->aCpus[i].vm.s.ThreadEMT; if ( hThread != NIL_RTTHREAD && hThread != hSelf) { uint64_t cMilliesElapsed = (RTTimeNanoTS() - NanoTS) / 1000000; int rc2 = RTThreadWait(hThread, cMilliesElapsed < cMilliesEMTWait ? RT_MAX(cMilliesEMTWait - cMilliesElapsed, 2000) : 2000, NULL); if (rc2 == VERR_TIMEOUT) /* avoid the assertion when debugging. */ rc2 = RTThreadWait(hThread, 1000, NULL); AssertLogRelMsgRC(rc2, ("i=%u rc=%Rrc\n", i, rc2)); if (RT_SUCCESS(rc2)) pUVM->aCpus[0].vm.s.ThreadEMT = NIL_RTTHREAD; } } /* Cleanup the semaphores. */ for (VMCPUID i = 0; i < pUVM->cCpus; i++) { RTSemEventDestroy(pUVM->aCpus[i].vm.s.EventSemWait); pUVM->aCpus[i].vm.s.EventSemWait = NIL_RTSEMEVENT; } /* * Free the event semaphores associated with the request packets. */ unsigned cReqs = 0; for (unsigned i = 0; i < RT_ELEMENTS(pUVM->vm.s.apReqFree); i++) { PVMREQ pReq = pUVM->vm.s.apReqFree[i]; pUVM->vm.s.apReqFree[i] = NULL; for (; pReq; pReq = pReq->pNext, cReqs++) { pReq->enmState = VMREQSTATE_INVALID; RTSemEventDestroy(pReq->EventSem); } } Assert(cReqs == pUVM->vm.s.cReqFree); NOREF(cReqs); /* * Kill all queued requests. (There really shouldn't be any!) */ for (unsigned i = 0; i < 10; i++) { PVMREQ pReqHead = (PVMREQ)ASMAtomicXchgPtr((void *volatile *)&pUVM->vm.s.pReqs, NULL); AssertMsg(!pReqHead, ("This isn't supposed to happen! VMR3Destroy caller has to serialize this.\n")); if (!pReqHead) break; for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext) { ASMAtomicUoWriteSize(&pReq->iStatus, VERR_INTERNAL_ERROR); ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID); RTSemEventSignal(pReq->EventSem); RTThreadSleep(2); RTSemEventDestroy(pReq->EventSem); } /* give them a chance to respond before we free the request memory. */ RTThreadSleep(32); } /* * Now all queued VCPU requests (again, there shouldn't be any). */ for (VMCPUID i = 0; i < pUVM->cCpus; i++) { PUVMCPU pUVCpu = &pUVM->aCpus[i]; for (unsigned i = 0; i < 10; i++) { PVMREQ pReqHead = (PVMREQ)ASMAtomicXchgPtr((void *volatile *)&pUVCpu->vm.s.pReqs, NULL); AssertMsg(!pReqHead, ("This isn't supposed to happen! VMR3Destroy caller has to serialize this.\n")); if (!pReqHead) break; for (PVMREQ pReq = pReqHead; pReq; pReq = pReq->pNext) { ASMAtomicUoWriteSize(&pReq->iStatus, VERR_INTERNAL_ERROR); ASMAtomicWriteSize(&pReq->enmState, VMREQSTATE_INVALID); RTSemEventSignal(pReq->EventSem); RTThreadSleep(2); RTSemEventDestroy(pReq->EventSem); } /* give them a chance to respond before we free the request memory. */ RTThreadSleep(32); } } /* * Make sure the VMMR0.r0 module and whatever else is unloaded. */ PDMR3TermUVM(pUVM); /* * Terminate the support library if initialized. */ if (pUVM->vm.s.pSession) { int rc = SUPR3Term(false /*fForced*/); AssertRC(rc); pUVM->vm.s.pSession = NIL_RTR0PTR; } /* * Destroy the MM heap and free the UVM structure. */ MMR3TermUVM(pUVM); STAMR3TermUVM(pUVM); #ifdef LOG_ENABLED RTLogSetCustomPrefixCallback(NULL, NULL, NULL); #endif RTTlsFree(pUVM->vm.s.idxTLS); ASMAtomicUoWriteU32(&pUVM->u32Magic, UINT32_MAX); RTMemPageFree(pUVM); RTLogFlush(NULL); } /** * Enumerates the VMs in this process. * * @returns Pointer to the next VM. * @returns NULL when no more VMs. * @param pVMPrev The previous VM * Use NULL to start the enumeration. */ VMMR3DECL(PVM) VMR3EnumVMs(PVM pVMPrev) { /* * This is quick and dirty. It has issues with VM being * destroyed during the enumeration. */ PUVM pNext; if (pVMPrev) pNext = pVMPrev->pUVM->pNext; else pNext = g_pUVMsHead; return pNext ? pNext->pVM : NULL; } /** * Registers an at VM destruction callback. * * @returns VBox status code. * @param pfnAtDtor Pointer to callback. * @param pvUser User argument. */ VMMR3DECL(int) VMR3AtDtorRegister(PFNVMATDTOR pfnAtDtor, void *pvUser) { /* * Check if already registered. */ VM_ATDTOR_LOCK(); PVMATDTOR pCur = g_pVMAtDtorHead; while (pCur) { if (pfnAtDtor == pCur->pfnAtDtor) { VM_ATDTOR_UNLOCK(); AssertMsgFailed(("Already registered at destruction callback %p!\n", pfnAtDtor)); return VERR_INVALID_PARAMETER; } /* next */ pCur = pCur->pNext; } VM_ATDTOR_UNLOCK(); /* * Allocate new entry. */ PVMATDTOR pVMAtDtor = (PVMATDTOR)RTMemAlloc(sizeof(*pVMAtDtor)); if (!pVMAtDtor) return VERR_NO_MEMORY; VM_ATDTOR_LOCK(); pVMAtDtor->pfnAtDtor = pfnAtDtor; pVMAtDtor->pvUser = pvUser; pVMAtDtor->pNext = g_pVMAtDtorHead; g_pVMAtDtorHead = pVMAtDtor; VM_ATDTOR_UNLOCK(); return VINF_SUCCESS; } /** * Deregisters an at VM destruction callback. * * @returns VBox status code. * @param pfnAtDtor Pointer to callback. */ VMMR3DECL(int) VMR3AtDtorDeregister(PFNVMATDTOR pfnAtDtor) { /* * Find it, unlink it and free it. */ VM_ATDTOR_LOCK(); PVMATDTOR pPrev = NULL; PVMATDTOR pCur = g_pVMAtDtorHead; while (pCur) { if (pfnAtDtor == pCur->pfnAtDtor) { if (pPrev) pPrev->pNext = pCur->pNext; else g_pVMAtDtorHead = pCur->pNext; pCur->pNext = NULL; VM_ATDTOR_UNLOCK(); RTMemFree(pCur); return VINF_SUCCESS; } /* next */ pPrev = pCur; pCur = pCur->pNext; } VM_ATDTOR_UNLOCK(); return VERR_INVALID_PARAMETER; } /** * Walks the list of at VM destructor callbacks. * @param pVM The VM which is about to be destroyed. */ static void vmR3AtDtor(PVM pVM) { /* * Find it, unlink it and free it. */ VM_ATDTOR_LOCK(); for (PVMATDTOR pCur = g_pVMAtDtorHead; pCur; pCur = pCur->pNext) pCur->pfnAtDtor(pVM, pCur->pvUser); VM_ATDTOR_UNLOCK(); } /** * Worker which checks integrity of some internal structures. * This is yet another attempt to track down that AVL tree crash. */ static void vmR3CheckIntegrity(PVM pVM) { #ifdef VBOX_STRICT int rc = PGMR3CheckIntegrity(pVM); AssertReleaseRC(rc); #endif } /** * EMT rendezvous worker for VMR3Reset. * * This is called by the emulation threads as a response to the reset request * issued by VMR3Reset(). * * @returns VERR_VM_INVALID_VM_STATE, VINF_EM_RESET or VINF_EM_SUSPEND. (This * is a strict return code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3Reset(PVM pVM, PVMCPU pVCpu, void *pvUser) { Assert(!pvUser); NOREF(pvUser); /* * The first EMT will try change the state to resetting. If this fails, * we won't get called for the other EMTs. */ if (pVCpu->idCpu == pVM->cCpus - 1) { int rc = vmR3TrySetState(pVM, "VMR3Reset", 3, VMSTATE_RESETTING, VMSTATE_RUNNING, VMSTATE_RESETTING, VMSTATE_SUSPENDED, VMSTATE_RESETTING_LS, VMSTATE_RUNNING_LS); if (RT_FAILURE(rc)) return rc; } /* * Check the state. */ VMSTATE enmVMState = VMR3GetState(pVM); AssertLogRelMsgReturn( enmVMState == VMSTATE_RESETTING || enmVMState == VMSTATE_RESETTING_LS, ("%s\n", VMR3GetStateName(enmVMState)), VERR_INTERNAL_ERROR_4); /* * EMT(0) does the full cleanup *after* all the other EMTs has been * thru here and been told to enter the EMSTATE_WAIT_SIPI state. * * Because there are per-cpu reset routines and order may/is important, * the following sequence looks a bit ugly... */ if (pVCpu->idCpu == 0) vmR3CheckIntegrity(pVM); /* Reset the VCpu state. */ VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED); /* Clear all pending forced actions. */ VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_ALL_MASK & ~VMCPU_FF_REQUEST); /* * Reset the VM components. */ if (pVCpu->idCpu == 0) { PATMR3Reset(pVM); CSAMR3Reset(pVM); PGMR3Reset(pVM); /* We clear VM RAM in PGMR3Reset. It's vital PDMR3Reset is executed * _afterwards_. E.g. ACPI sets up RAM tables during init/reset. */ /** @todo PGMR3Reset should be called after PDMR3Reset really, because we'll trash OS <-> hardware * communication structures residing in RAM when done in the other order. I.e. the device must be * quiesced first, then we clear the memory and plan tables. Probably have to make these things * explicit in some way, some memory setup pass or something. * (Example: DevAHCI may assert if memory is zeroed before it've read the FIS.) * * @bugref{4467} */ MMR3Reset(pVM); PDMR3Reset(pVM); SELMR3Reset(pVM); TRPMR3Reset(pVM); REMR3Reset(pVM); IOMR3Reset(pVM); CPUMR3Reset(pVM); } CPUMR3ResetCpu(pVCpu); if (pVCpu->idCpu == 0) { TMR3Reset(pVM); EMR3Reset(pVM); HWACCMR3Reset(pVM); /* This must come *after* PATM, CSAM, CPUM, SELM and TRPM. */ #ifdef LOG_ENABLED /* * Debug logging. */ RTLogPrintf("\n\nThe VM was reset:\n"); DBGFR3Info(pVM, "cpum", "verbose", NULL); #endif /* * Since EMT(0) is the last to go thru here, it will advance the state. * When a live save is active, we will move on to SuspendingLS but * leave it for VMR3Reset to do the actual suspending due to deadlock risks. */ PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); enmVMState = pVM->enmVMState; if (enmVMState == VMSTATE_RESETTING) { if (pUVM->vm.s.enmPrevVMState == VMSTATE_SUSPENDED) vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDED, VMSTATE_RESETTING); else vmR3SetStateLocked(pVM, pUVM, VMSTATE_RUNNING, VMSTATE_RESETTING); } else vmR3SetStateLocked(pVM, pUVM, VMSTATE_SUSPENDING_LS, VMSTATE_RESETTING_LS); RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); vmR3CheckIntegrity(pVM); /* * Do the suspend bit as well. * It only requires some EMT(0) work at present. */ if (enmVMState != VMSTATE_RESETTING) { vmR3SuspendDoWork(pVM); vmR3SetState(pVM, VMSTATE_SUSPENDED_LS, VMSTATE_SUSPENDING_LS); } } return enmVMState == VMSTATE_RESETTING ? VINF_EM_RESET : 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. */ } /** * Reset the current VM. * * @returns VBox status code. * @param pVM VM to reset. */ VMMR3DECL(int) VMR3Reset(PVM pVM) { LogFlow(("VMR3Reset:\n")); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Gather all the EMTs to make sure there are no races before * changing the VM state. */ int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_DESCENDING | VMMEMTRENDEZVOUS_FLAGS_STOP_ON_ERROR, vmR3Reset, NULL); LogFlow(("VMR3Reset: returns %Rrc\n", rc)); return rc; } /** * Gets the current VM state. * * @returns The current VM state. * @param pVM VM handle. * @thread Any */ VMMR3DECL(VMSTATE) VMR3GetState(PVM pVM) { return pVM->enmVMState; } /** * Gets the state name string for a VM state. * * @returns Pointer to the state name. (readonly) * @param enmState The state. */ VMMR3DECL(const char *) VMR3GetStateName(VMSTATE enmState) { switch (enmState) { case VMSTATE_CREATING: return "CREATING"; case VMSTATE_CREATED: return "CREATED"; case VMSTATE_LOADING: return "LOADING"; case VMSTATE_POWERING_ON: return "POWERING_ON"; case VMSTATE_RESUMING: return "RESUMING"; case VMSTATE_RUNNING: return "RUNNING"; case VMSTATE_RUNNING_LS: return "RUNNING_LS"; case VMSTATE_RESETTING: return "RESETTING"; case VMSTATE_RESETTING_LS: return "RESETTING_LS"; case VMSTATE_SUSPENDED: return "SUSPENDED"; case VMSTATE_SUSPENDED_LS: return "SUSPENDED_LS"; case VMSTATE_SUSPENDED_EXT_LS: return "SUSPENDED_EXT_LS"; case VMSTATE_SUSPENDING: return "SUSPENDING"; case VMSTATE_SUSPENDING_LS: return "SUSPENDING_LS"; case VMSTATE_SUSPENDING_EXT_LS: return "SUSPENDING_EXT_LS"; case VMSTATE_SAVING: return "SAVING"; case VMSTATE_DEBUGGING: return "DEBUGGING"; case VMSTATE_DEBUGGING_LS: return "DEBUGGING_LS"; case VMSTATE_POWERING_OFF: return "POWERING_OFF"; case VMSTATE_POWERING_OFF_LS: return "POWERING_OFF_LS"; case VMSTATE_FATAL_ERROR: return "FATAL_ERROR"; case VMSTATE_FATAL_ERROR_LS: return "FATAL_ERROR_LS"; case VMSTATE_GURU_MEDITATION: return "GURU_MEDITATION"; case VMSTATE_GURU_MEDITATION_LS:return "GURU_MEDITATION_LS"; case VMSTATE_LOAD_FAILURE: return "LOAD_FAILURE"; case VMSTATE_OFF: return "OFF"; case VMSTATE_OFF_LS: return "OFF_LS"; case VMSTATE_DESTROYING: return "DESTROYING"; case VMSTATE_TERMINATED: return "TERMINATED"; default: AssertMsgFailed(("Unknown state %d\n", enmState)); return "Unknown!\n"; } } /** * Validates the state transition in strict builds. * * @returns true if valid, false if not. * * @param enmStateOld The old (current) state. * @param enmStateNew The proposed new state. * * @remarks The reference for this is found in doc/vp/VMM.vpp, the VMSTATE * diagram (under State Machine Diagram). */ static bool vmR3ValidateStateTransition(VMSTATE enmStateOld, VMSTATE enmStateNew) { #ifdef VBOX_STRICT switch (enmStateOld) { case VMSTATE_CREATING: AssertMsgReturn(enmStateNew == VMSTATE_CREATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_CREATED: AssertMsgReturn( enmStateNew == VMSTATE_LOADING || enmStateNew == VMSTATE_POWERING_ON || enmStateNew == VMSTATE_POWERING_OFF , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_LOADING: AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED || enmStateNew == VMSTATE_LOAD_FAILURE , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_POWERING_ON: AssertMsgReturn( enmStateNew == VMSTATE_RUNNING /*|| enmStateNew == VMSTATE_FATAL_ERROR ?*/ , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_RESUMING: AssertMsgReturn( enmStateNew == VMSTATE_RUNNING /*|| enmStateNew == VMSTATE_FATAL_ERROR ?*/ , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_RUNNING: AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF || enmStateNew == VMSTATE_SUSPENDING || enmStateNew == VMSTATE_RESETTING || enmStateNew == VMSTATE_RUNNING_LS || enmStateNew == VMSTATE_DEBUGGING || enmStateNew == VMSTATE_FATAL_ERROR || enmStateNew == VMSTATE_GURU_MEDITATION , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_RUNNING_LS: AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF_LS || enmStateNew == VMSTATE_SUSPENDING_LS || enmStateNew == VMSTATE_SUSPENDING_EXT_LS || enmStateNew == VMSTATE_RESETTING_LS || enmStateNew == VMSTATE_RUNNING || enmStateNew == VMSTATE_DEBUGGING_LS || enmStateNew == VMSTATE_FATAL_ERROR_LS || enmStateNew == VMSTATE_GURU_MEDITATION_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_RESETTING: AssertMsgReturn(enmStateNew == VMSTATE_RUNNING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_RESETTING_LS: AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SUSPENDING: AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SUSPENDING_LS: AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING || enmStateNew == VMSTATE_SUSPENDED_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SUSPENDING_EXT_LS: AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDING || enmStateNew == VMSTATE_SUSPENDED_EXT_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SUSPENDED: AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF || enmStateNew == VMSTATE_SAVING || enmStateNew == VMSTATE_RESETTING || enmStateNew == VMSTATE_RESUMING || enmStateNew == VMSTATE_LOADING , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SUSPENDED_LS: AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED || enmStateNew == VMSTATE_SAVING , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SUSPENDED_EXT_LS: AssertMsgReturn( enmStateNew == VMSTATE_SUSPENDED || enmStateNew == VMSTATE_SAVING , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_SAVING: AssertMsgReturn(enmStateNew == VMSTATE_SUSPENDED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_DEBUGGING: AssertMsgReturn( enmStateNew == VMSTATE_RUNNING || enmStateNew == VMSTATE_POWERING_OFF , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_DEBUGGING_LS: AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING || enmStateNew == VMSTATE_RUNNING_LS || enmStateNew == VMSTATE_POWERING_OFF_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_POWERING_OFF: AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_POWERING_OFF_LS: AssertMsgReturn( enmStateNew == VMSTATE_POWERING_OFF || enmStateNew == VMSTATE_OFF_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_OFF: AssertMsgReturn(enmStateNew == VMSTATE_DESTROYING, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_OFF_LS: AssertMsgReturn(enmStateNew == VMSTATE_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_FATAL_ERROR: AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_FATAL_ERROR_LS: AssertMsgReturn( enmStateNew == VMSTATE_FATAL_ERROR || enmStateNew == VMSTATE_POWERING_OFF_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_GURU_MEDITATION: AssertMsgReturn( enmStateNew == VMSTATE_DEBUGGING || enmStateNew == VMSTATE_POWERING_OFF , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_GURU_MEDITATION_LS: AssertMsgReturn( enmStateNew == VMSTATE_GURU_MEDITATION || enmStateNew == VMSTATE_DEBUGGING_LS || enmStateNew == VMSTATE_POWERING_OFF_LS , ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_LOAD_FAILURE: AssertMsgReturn(enmStateNew == VMSTATE_POWERING_OFF, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_DESTROYING: AssertMsgReturn(enmStateNew == VMSTATE_TERMINATED, ("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; case VMSTATE_TERMINATED: default: AssertMsgFailedReturn(("%s -> %s\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew)), false); break; } #endif /* VBOX_STRICT */ return true; } /** * Does the state change callouts. * * The caller owns the AtStateCritSect. * * @param pVM The VM handle. * @param pUVM The UVM handle. * @param enmStateNew The New state. * @param enmStateOld The old state. */ static void vmR3DoAtState(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld) { LogRel(("Changing the VM state from '%s' to '%s'.\n", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew))); for (PVMATSTATE pCur = pUVM->vm.s.pAtState; pCur; pCur = pCur->pNext) { pCur->pfnAtState(pVM, enmStateNew, enmStateOld, pCur->pvUser); if ( enmStateNew != VMSTATE_DESTROYING && pVM->enmVMState == VMSTATE_DESTROYING) break; AssertMsg(pVM->enmVMState == enmStateNew, ("You are not allowed to change the state while in the change callback, except " "from destroying the VM. There are restrictions in the way the state changes " "are propagated up to the EM execution loop and it makes the program flow very " "difficult to follow. (%s, expected %s, old %s)\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateOld))); } } /** * Sets the current VM state, with the AtStatCritSect already entered. * * @param pVM The VM handle. * @param pUVM The UVM handle. * @param enmStateNew The new state. * @param enmStateOld The old state. */ static void vmR3SetStateLocked(PVM pVM, PUVM pUVM, VMSTATE enmStateNew, VMSTATE enmStateOld) { vmR3ValidateStateTransition(enmStateOld, enmStateNew); AssertMsg(pVM->enmVMState == enmStateOld, ("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld))); pUVM->vm.s.enmPrevVMState = enmStateOld; pVM->enmVMState = enmStateNew; vmR3DoAtState(pVM, pUVM, enmStateNew, enmStateOld); } /** * Sets the current VM state. * * @param pVM VM handle. * @param enmStateNew The new state. * @param enmStateOld The old state (for asserting only). */ static void vmR3SetState(PVM pVM, VMSTATE enmStateNew, VMSTATE enmStateOld) { PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); AssertMsg(pVM->enmVMState == enmStateOld, ("%s != %s\n", VMR3GetStateName(pVM->enmVMState), VMR3GetStateName(enmStateOld))); vmR3SetStateLocked(pVM, pUVM, enmStateNew, pVM->enmVMState); RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); } /** * Tries to perform a state transition. * * @returns The 1-based ordinal of the succeeding transition. * VERR_VM_INVALID_VM_STATE and Assert+LogRel on failure. * * @param pVM The VM handle. * @param pszWho Who is trying to change it. * @param cTransitions The number of transitions in the ellipsis. * @param ... Transition pairs; new, old. */ static int vmR3TrySetState(PVM pVM, const char *pszWho, unsigned cTransitions, ...) { va_list va; VMSTATE enmStateNew = VMSTATE_CREATED; VMSTATE enmStateOld = VMSTATE_CREATED; #ifdef VBOX_STRICT /* * Validate the input first. */ va_start(va, cTransitions); for (unsigned i = 0; i < cTransitions; i++) { enmStateNew = (VMSTATE)va_arg(va, /*VMSTATE*/int); enmStateOld = (VMSTATE)va_arg(va, /*VMSTATE*/int); vmR3ValidateStateTransition(enmStateOld, enmStateNew); } va_end(va); #endif /* * Grab the lock and see if any of the proposed transisions works out. */ va_start(va, cTransitions); int rc = VERR_VM_INVALID_VM_STATE; PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); VMSTATE enmStateCur = pVM->enmVMState; for (unsigned i = 0; i < cTransitions; i++) { enmStateNew = (VMSTATE)va_arg(va, /*VMSTATE*/int); enmStateOld = (VMSTATE)va_arg(va, /*VMSTATE*/int); if (enmStateCur == enmStateOld) { vmR3SetStateLocked(pVM, pUVM, enmStateNew, enmStateOld); rc = i + 1; break; } } if (RT_FAILURE(rc)) { /* * Complain about it. */ if (cTransitions == 1) LogRel(("%s: %s -> %s failed, because the VM state is actually %s\n", pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur))); else { va_end(va); va_start(va, cTransitions); LogRel(("%s:\n", pszWho)); for (unsigned i = 0; i < cTransitions; i++) { enmStateNew = (VMSTATE)va_arg(va, /*VMSTATE*/int); enmStateOld = (VMSTATE)va_arg(va, /*VMSTATE*/int); LogRel(("%s%s -> %s", i ? ", " : " ", VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew))); } LogRel((" failed, because the VM state is actually %s\n", VMR3GetStateName(enmStateCur))); } VMSetError(pVM, VERR_VM_INVALID_VM_STATE, RT_SRC_POS, N_("%s failed because the VM state is %s instead of %s"), VMR3GetStateName(enmStateCur), VMR3GetStateName(enmStateOld)); AssertMsgFailed(("%s: %s -> %s failed, state is actually %s\n", pszWho, VMR3GetStateName(enmStateOld), VMR3GetStateName(enmStateNew), VMR3GetStateName(enmStateCur))); } RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); va_end(va); Assert(rc > 0 || rc < 0); return rc; } /** * Flag a guru meditation ... a hack. * * @param pVM The VM handle * * @todo Rewrite this part. The guru meditation should be flagged * immediately by the VMM and not by VMEmt.cpp when it's all over. */ void vmR3SetGuruMeditation(PVM pVM) { PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); VMSTATE enmStateCur = pVM->enmVMState; if (enmStateCur == VMSTATE_RUNNING) vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION, VMSTATE_RUNNING); else if (enmStateCur == VMSTATE_RUNNING_LS) { vmR3SetStateLocked(pVM, pUVM, VMSTATE_GURU_MEDITATION_LS, VMSTATE_RUNNING_LS); SSMR3Cancel(pVM); } RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); } /** * Checks if the VM was teleported and hasn't been fully resumed yet. * * This applies to both sides of the teleportation since we may leave a working * clone behind and the user is allowed to resume this... * * @returns true / false. * @param pVM The VM handle. * @thread Any thread. */ VMMR3DECL(bool) VMR3TeleportedAndNotFullyResumedYet(PVM pVM) { VM_ASSERT_VALID_EXT_RETURN(pVM, false); return pVM->vm.s.fTeleportedAndNotFullyResumedYet; } /** * Registers a VM state change callback. * * You are not allowed to call any function which changes the VM state from a * state callback, except VMR3Destroy(). * * @returns VBox status code. * @param pVM VM handle. * @param pfnAtState Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtStateRegister(PVM pVM, PFNVMATSTATE pfnAtState, void *pvUser) { LogFlow(("VMR3AtStateRegister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser)); /* * Validate input. */ AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Allocate a new record. */ PUVM pUVM = pVM->pUVM; PVMATSTATE pNew = (PVMATSTATE)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew)); if (!pNew) return VERR_NO_MEMORY; /* fill */ pNew->pfnAtState = pfnAtState; pNew->pvUser = pvUser; /* insert */ RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); pNew->pNext = *pUVM->vm.s.ppAtStateNext; *pUVM->vm.s.ppAtStateNext = pNew; pUVM->vm.s.ppAtStateNext = &pNew->pNext; RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); return VINF_SUCCESS; } /** * Deregisters a VM state change callback. * * @returns VBox status code. * @param pVM VM handle. * @param pfnAtState Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtStateDeregister(PVM pVM, PFNVMATSTATE pfnAtState, void *pvUser) { LogFlow(("VMR3AtStateDeregister: pfnAtState=%p pvUser=%p\n", pfnAtState, pvUser)); /* * Validate input. */ AssertPtrReturn(pfnAtState, VERR_INVALID_PARAMETER); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtStateCritSect); /* * Search the list for the entry. */ PVMATSTATE pPrev = NULL; PVMATSTATE pCur = pUVM->vm.s.pAtState; while ( pCur && ( pCur->pfnAtState != pfnAtState || pCur->pvUser != pvUser)) { pPrev = pCur; pCur = pCur->pNext; } if (!pCur) { AssertMsgFailed(("pfnAtState=%p was not found\n", pfnAtState)); RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); return VERR_FILE_NOT_FOUND; } /* * Unlink it. */ if (pPrev) { pPrev->pNext = pCur->pNext; if (!pCur->pNext) pUVM->vm.s.ppAtStateNext = &pPrev->pNext; } else { pUVM->vm.s.pAtState = pCur->pNext; if (!pCur->pNext) pUVM->vm.s.ppAtStateNext = &pUVM->vm.s.pAtState; } RTCritSectLeave(&pUVM->vm.s.AtStateCritSect); /* * Free it. */ pCur->pfnAtState = NULL; pCur->pNext = NULL; MMR3HeapFree(pCur); return VINF_SUCCESS; } /** * Registers a VM error callback. * * @returns VBox status code. * @param pVM The VM handle. * @param pfnAtError Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtErrorRegister(PVM pVM, PFNVMATERROR pfnAtError, void *pvUser) { return VMR3AtErrorRegisterU(pVM->pUVM, pfnAtError, pvUser); } /** * Registers a VM error callback. * * @returns VBox status code. * @param pUVM The VM handle. * @param pfnAtError Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtErrorRegisterU(PUVM pUVM, PFNVMATERROR pfnAtError, void *pvUser) { LogFlow(("VMR3AtErrorRegister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser)); /* * Validate input. */ AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER); UVM_ASSERT_VALID_EXT_RETURN(pUVM, VERR_INVALID_VM_HANDLE); /* * Allocate a new record. */ PVMATERROR pNew = (PVMATERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew)); if (!pNew) return VERR_NO_MEMORY; /* fill */ pNew->pfnAtError = pfnAtError; pNew->pvUser = pvUser; /* insert */ RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); pNew->pNext = *pUVM->vm.s.ppAtErrorNext; *pUVM->vm.s.ppAtErrorNext = pNew; pUVM->vm.s.ppAtErrorNext = &pNew->pNext; RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); return VINF_SUCCESS; } /** * Deregisters a VM error callback. * * @returns VBox status code. * @param pVM The VM handle. * @param pfnAtError Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtErrorDeregister(PVM pVM, PFNVMATERROR pfnAtError, void *pvUser) { LogFlow(("VMR3AtErrorDeregister: pfnAtError=%p pvUser=%p\n", pfnAtError, pvUser)); /* * Validate input. */ AssertPtrReturn(pfnAtError, VERR_INVALID_PARAMETER); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); /* * Search the list for the entry. */ PVMATERROR pPrev = NULL; PVMATERROR pCur = pUVM->vm.s.pAtError; while ( pCur && ( pCur->pfnAtError != pfnAtError || pCur->pvUser != pvUser)) { pPrev = pCur; pCur = pCur->pNext; } if (!pCur) { AssertMsgFailed(("pfnAtError=%p was not found\n", pfnAtError)); RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); return VERR_FILE_NOT_FOUND; } /* * Unlink it. */ if (pPrev) { pPrev->pNext = pCur->pNext; if (!pCur->pNext) pUVM->vm.s.ppAtErrorNext = &pPrev->pNext; } else { pUVM->vm.s.pAtError = pCur->pNext; if (!pCur->pNext) pUVM->vm.s.ppAtErrorNext = &pUVM->vm.s.pAtError; } RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); /* * Free it. */ pCur->pfnAtError = NULL; pCur->pNext = NULL; MMR3HeapFree(pCur); return VINF_SUCCESS; } /** * Ellipsis to va_list wrapper for calling pfnAtError. */ static void vmR3SetErrorWorkerDoCall(PVM pVM, PVMATERROR pCur, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...) { va_list va; va_start(va, pszFormat); pCur->pfnAtError(pVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va); va_end(va); } /** * This is a worker function for GC and Ring-0 calls to VMSetError and VMSetErrorV. * The message is found in VMINT. * * @param pVM The VM handle. * @thread EMT. */ VMMR3DECL(void) VMR3SetErrorWorker(PVM pVM) { VM_ASSERT_EMT(pVM); AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetErrorV! Contrats!\n")); /* * Unpack the error (if we managed to format one). */ PVMERROR pErr = pVM->vm.s.pErrorR3; const char *pszFile = NULL; const char *pszFunction = NULL; uint32_t iLine = 0; const char *pszMessage; int32_t rc = VERR_MM_HYPER_NO_MEMORY; if (pErr) { AssertCompile(sizeof(const char) == sizeof(uint8_t)); if (pErr->offFile) pszFile = (const char *)pErr + pErr->offFile; iLine = pErr->iLine; if (pErr->offFunction) pszFunction = (const char *)pErr + pErr->offFunction; if (pErr->offMessage) pszMessage = (const char *)pErr + pErr->offMessage; else pszMessage = "No message!"; } else pszMessage = "No message! (Failed to allocate memory to put the error message in!)"; /* * Call the at error callbacks. */ PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors); for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext) vmR3SetErrorWorkerDoCall(pVM, pCur, rc, RT_SRC_POS_ARGS, "%s", pszMessage); RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); } /** * Gets the number of errors raised via VMSetError. * * This can be used avoid double error messages. * * @returns The error count. * @param pVM The VM handle. */ VMMR3DECL(uint32_t) VMR3GetErrorCount(PVM pVM) { return pVM->pUVM->vm.s.cErrors; } /** * Creation time wrapper for vmR3SetErrorUV. * * @returns rc. * @param pUVM Pointer to the user mode VM structure. * @param rc The VBox status code. * @param RT_SRC_POS_DECL The source position of this error. * @param pszFormat Format string. * @param ... The arguments. * @thread Any thread. */ static int vmR3SetErrorU(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, ...) { va_list va; va_start(va, pszFormat); vmR3SetErrorUV(pUVM, rc, pszFile, iLine, pszFunction, pszFormat, &va); va_end(va); return rc; } /** * Worker which calls everyone listening to the VM error messages. * * @param pUVM Pointer to the user mode VM structure. * @param rc The VBox status code. * @param RT_SRC_POS_DECL The source position of this error. * @param pszFormat Format string. * @param pArgs Pointer to the format arguments. * @thread EMT */ DECLCALLBACK(void) vmR3SetErrorUV(PUVM pUVM, int rc, RT_SRC_POS_DECL, const char *pszFormat, va_list *pArgs) { /* * Log the error. */ va_list va3; va_copy(va3, *pArgs); RTLogRelPrintf("VMSetError: %s(%d) %s\nVMSetError: %N\n", pszFile, iLine, pszFunction, pszFormat, &va3); va_end(va3); #ifdef LOG_ENABLED va_copy(va3, *pArgs); RTLogPrintf("VMSetError: %s(%d) %s\n%N\n", pszFile, iLine, pszFunction, pszFormat, &va3); va_end(va3); #endif /* * Make a copy of the message. */ if (pUVM->pVM) vmSetErrorCopy(pUVM->pVM, rc, RT_SRC_POS_ARGS, pszFormat, *pArgs); /* * Call the at error callbacks. */ bool fCalledSomeone = false; RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); ASMAtomicIncU32(&pUVM->vm.s.cErrors); for (PVMATERROR pCur = pUVM->vm.s.pAtError; pCur; pCur = pCur->pNext) { va_list va2; va_copy(va2, *pArgs); pCur->pfnAtError(pUVM->pVM, pCur->pvUser, rc, RT_SRC_POS_ARGS, pszFormat, va2); va_end(va2); fCalledSomeone = true; } RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); } /** * Registers a VM runtime error callback. * * @returns VBox status code. * @param pVM The VM handle. * @param pfnAtRuntimeError Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtRuntimeErrorRegister(PVM pVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser) { LogFlow(("VMR3AtRuntimeErrorRegister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser)); /* * Validate input. */ AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); /* * Allocate a new record. */ PUVM pUVM = pVM->pUVM; PVMATRUNTIMEERROR pNew = (PVMATRUNTIMEERROR)MMR3HeapAllocU(pUVM, MM_TAG_VM, sizeof(*pNew)); if (!pNew) return VERR_NO_MEMORY; /* fill */ pNew->pfnAtRuntimeError = pfnAtRuntimeError; pNew->pvUser = pvUser; /* insert */ RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); pNew->pNext = *pUVM->vm.s.ppAtRuntimeErrorNext; *pUVM->vm.s.ppAtRuntimeErrorNext = pNew; pUVM->vm.s.ppAtRuntimeErrorNext = &pNew->pNext; RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); return VINF_SUCCESS; } /** * Deregisters a VM runtime error callback. * * @returns VBox status code. * @param pVM The VM handle. * @param pfnAtRuntimeError Pointer to callback. * @param pvUser User argument. * @thread Any. */ VMMR3DECL(int) VMR3AtRuntimeErrorDeregister(PVM pVM, PFNVMATRUNTIMEERROR pfnAtRuntimeError, void *pvUser) { LogFlow(("VMR3AtRuntimeErrorDeregister: pfnAtRuntimeError=%p pvUser=%p\n", pfnAtRuntimeError, pvUser)); /* * Validate input. */ AssertPtrReturn(pfnAtRuntimeError, VERR_INVALID_PARAMETER); VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE); PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); /* * Search the list for the entry. */ PVMATRUNTIMEERROR pPrev = NULL; PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; while ( pCur && ( pCur->pfnAtRuntimeError != pfnAtRuntimeError || pCur->pvUser != pvUser)) { pPrev = pCur; pCur = pCur->pNext; } if (!pCur) { AssertMsgFailed(("pfnAtRuntimeError=%p was not found\n", pfnAtRuntimeError)); RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); return VERR_FILE_NOT_FOUND; } /* * Unlink it. */ if (pPrev) { pPrev->pNext = pCur->pNext; if (!pCur->pNext) pUVM->vm.s.ppAtRuntimeErrorNext = &pPrev->pNext; } else { pUVM->vm.s.pAtRuntimeError = pCur->pNext; if (!pCur->pNext) pUVM->vm.s.ppAtRuntimeErrorNext = &pUVM->vm.s.pAtRuntimeError; } RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); /* * Free it. */ pCur->pfnAtRuntimeError = NULL; pCur->pNext = NULL; MMR3HeapFree(pCur); return VINF_SUCCESS; } /** * EMT rendezvous worker that vmR3SetRuntimeErrorCommon uses to safely change * the state to FatalError(LS). * * @returns VERR_VM_INVALID_VM_STATE or VINF_SUCCESS. (This is a strict return * code, see FNVMMEMTRENDEZVOUS.) * * @param pVM The VM handle. * @param pVCpu The VMCPU handle of the EMT. * @param pvUser Ignored. */ static DECLCALLBACK(VBOXSTRICTRC) vmR3SetRuntimeErrorChangeState(PVM pVM, PVMCPU pVCpu, void *pvUser) { NOREF(pVCpu); Assert(!pvUser); NOREF(pvUser); int rc = vmR3TrySetState(pVM, "VMSetRuntimeError", 2, VMSTATE_FATAL_ERROR, VMSTATE_RUNNING, VMSTATE_FATAL_ERROR_LS, VMSTATE_RUNNING_LS); if (rc == 2) SSMR3Cancel(pVM); return RT_SUCCESS(rc) ? VINF_SUCCESS : rc; } /** * Worker for VMR3SetRuntimeErrorWorker and vmR3SetRuntimeErrorV. * * This does the common parts after the error has been saved / retrieved. * * @returns VBox status code with modifications, see VMSetRuntimeErrorV. * * @param pVM The VM handle. * @param fFlags The error flags. * @param pszErrorId Error ID string. * @param pszFormat Format string. * @param pVa Pointer to the format arguments. */ static int vmR3SetRuntimeErrorCommon(PVM pVM, uint32_t fFlags, const char *pszErrorId, const char *pszFormat, va_list *pVa) { LogRel(("VM: Raising runtime error '%s' (fFlags=%#x)\n", pszErrorId, fFlags)); /* * Take actions before the call. */ int rc; if (fFlags & VMSETRTERR_FLAGS_FATAL) rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, vmR3SetRuntimeErrorChangeState, NULL); else if (fFlags & VMSETRTERR_FLAGS_SUSPEND) rc = VMR3Suspend(pVM); else rc = VINF_SUCCESS; /* * Do the callback round. */ PUVM pUVM = pVM->pUVM; RTCritSectEnter(&pUVM->vm.s.AtErrorCritSect); ASMAtomicIncU32(&pUVM->vm.s.cRuntimeErrors); for (PVMATRUNTIMEERROR pCur = pUVM->vm.s.pAtRuntimeError; pCur; pCur = pCur->pNext) { va_list va; va_copy(va, *pVa); pCur->pfnAtRuntimeError(pVM, pCur->pvUser, fFlags, pszErrorId, pszFormat, va); va_end(va); } RTCritSectLeave(&pUVM->vm.s.AtErrorCritSect); return rc; } /** * Ellipsis to va_list wrapper for calling vmR3SetRuntimeErrorCommon. */ static int vmR3SetRuntimeErrorCommonF(PVM pVM, uint32_t fFlags, const char *pszErrorId, const char *pszFormat, ...) { va_list va; va_start(va, pszFormat); int rc = vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, &va); va_end(va); return rc; } /** * This is a worker function for RC and Ring-0 calls to VMSetError and * VMSetErrorV. * * The message is found in VMINT. * * @returns VBox status code, see VMSetRuntimeError. * @param pVM The VM handle. * @thread EMT. */ VMMR3DECL(int) VMR3SetRuntimeErrorWorker(PVM pVM) { VM_ASSERT_EMT(pVM); AssertReleaseMsgFailed(("And we have a winner! You get to implement Ring-0 and GC VMSetRuntimeErrorV! Congrats!\n")); /* * Unpack the error (if we managed to format one). */ const char *pszErrorId = "SetRuntimeError"; const char *pszMessage = "No message!"; uint32_t fFlags = VMSETRTERR_FLAGS_FATAL; PVMRUNTIMEERROR pErr = pVM->vm.s.pRuntimeErrorR3; if (pErr) { AssertCompile(sizeof(const char) == sizeof(uint8_t)); if (pErr->offErrorId) pszErrorId = (const char *)pErr + pErr->offErrorId; if (pErr->offMessage) pszMessage = (const char *)pErr + pErr->offMessage; fFlags = pErr->fFlags; } /* * Join cause with vmR3SetRuntimeErrorV. */ return vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage); } /** * Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3. * * @returns VBox status code with modifications, see VMSetRuntimeErrorV. * * @param pVM The VM handle. * @param fFlags The error flags. * @param pszErrorId Error ID string. * @param pszMessage The error message residing the MM heap. * * @thread EMT */ DECLCALLBACK(int) vmR3SetRuntimeError(PVM pVM, uint32_t fFlags, const char *pszErrorId, char *pszMessage) { #if 0 /** @todo make copy of the error msg. */ /* * Make a copy of the message. */ va_list va2; va_copy(va2, *pVa); vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2); va_end(va2); #endif /* * Join paths with VMR3SetRuntimeErrorWorker. */ int rc = vmR3SetRuntimeErrorCommonF(pVM, fFlags, pszErrorId, "%s", pszMessage); MMR3HeapFree(pszMessage); return rc; } /** * Worker for VMSetRuntimeErrorV for doing the job on EMT in ring-3. * * @returns VBox status code with modifications, see VMSetRuntimeErrorV. * * @param pVM The VM handle. * @param fFlags The error flags. * @param pszErrorId Error ID string. * @param pszFormat Format string. * @param pVa Pointer to the format arguments. * * @thread EMT */ DECLCALLBACK(int) vmR3SetRuntimeErrorV(PVM pVM, uint32_t fFlags, const char *pszErrorId, const char *pszFormat, va_list *pVa) { /* * Make a copy of the message. */ va_list va2; va_copy(va2, *pVa); vmSetRuntimeErrorCopy(pVM, fFlags, pszErrorId, pszFormat, va2); va_end(va2); /* * Join paths with VMR3SetRuntimeErrorWorker. */ return vmR3SetRuntimeErrorCommon(pVM, fFlags, pszErrorId, pszFormat, pVa); } /** * Gets the number of runtime errors raised via VMR3SetRuntimeError. * * This can be used avoid double error messages. * * @returns The runtime error count. * @param pVM The VM handle. */ VMMR3DECL(uint32_t) VMR3GetRuntimeErrorCount(PVM pVM) { return pVM->pUVM->vm.s.cRuntimeErrors; } /** * Gets the ID virtual of the virtual CPU assoicated with the calling thread. * * @returns The CPU ID. NIL_VMCPUID if the thread isn't an EMT. * * @param pVM The VM handle. */ VMMR3DECL(RTCPUID) VMR3GetVMCPUId(PVM pVM) { PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS); return pUVCpu ? pUVCpu->idCpu : NIL_VMCPUID; } /** * Returns the native handle of the current EMT VMCPU thread. * * @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise * @param pVM The VM handle. * @thread EMT */ VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThread(PVM pVM) { PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS); if (!pUVCpu) return NIL_RTNATIVETHREAD; return pUVCpu->vm.s.NativeThreadEMT; } /** * Returns the native handle of the current EMT VMCPU thread. * * @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise * @param pVM The VM handle. * @thread EMT */ VMMR3DECL(RTNATIVETHREAD) VMR3GetVMCPUNativeThreadU(PUVM pUVM) { PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS); if (!pUVCpu) return NIL_RTNATIVETHREAD; return pUVCpu->vm.s.NativeThreadEMT; } /** * Returns the handle of the current EMT VMCPU thread. * * @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise * @param pVM The VM handle. * @thread EMT */ VMMR3DECL(RTTHREAD) VMR3GetVMCPUThread(PVM pVM) { PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pVM->pUVM->vm.s.idxTLS); if (!pUVCpu) return NIL_RTTHREAD; return pUVCpu->vm.s.ThreadEMT; } /** * Returns the handle of the current EMT VMCPU thread. * * @returns Handle if this is an EMT thread; NIL_RTNATIVETHREAD otherwise * @param pVM The VM handle. * @thread EMT */ VMMR3DECL(RTTHREAD) VMR3GetVMCPUThreadU(PUVM pUVM) { PUVMCPU pUVCpu = (PUVMCPU)RTTlsGet(pUVM->vm.s.idxTLS); if (!pUVCpu) return NIL_RTTHREAD; return pUVCpu->vm.s.ThreadEMT; }