X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm.c;h=491b7dee4da2ba6579bafc99a43b10a404f1a42b;hb=e1ea936272cd584e26b3a2be63d549fafd44e6dd;hp=29e1c52f78651fa846cd13bfefb383469c1b9f55;hpb=ed5307b56012c5962ad9ef73d84553c245ce3542;p=palacios.git diff --git a/palacios/src/palacios/vmm.c b/palacios/src/palacios/vmm.c index 29e1c52..491b7de 100644 --- a/palacios/src/palacios/vmm.c +++ b/palacios/src/palacios/vmm.c @@ -21,94 +21,255 @@ #include #include #include -#include #include #include #include +#include +#include -#ifdef CONFIG_SVM + +#ifdef V3_CONFIG_SVM #include #endif -#ifdef CONFIG_VMX +#ifdef V3_CONFIG_VMX #include #endif -#ifdef CONFIG_VNET -#include +#ifdef V3_CONFIG_CHECKPOINT +#include #endif -v3_cpu_arch_t v3_cpu_types[CONFIG_MAX_CPUS]; -struct v3_os_hooks * os_hooks = NULL; +v3_cpu_arch_t v3_cpu_types[V3_CONFIG_MAX_CPUS]; +v3_cpu_arch_t v3_mach_type = V3_INVALID_CPU; +struct v3_os_hooks * os_hooks = NULL; int v3_dbg_enable = 0; + static void init_cpu(void * arg) { uint32_t cpu_id = (uint32_t)(addr_t)arg; -#ifdef CONFIG_SVM +#ifdef V3_CONFIG_SVM if (v3_is_svm_capable()) { - PrintDebug("Machine is SVM Capable\n"); + PrintDebug(VM_NONE, VCORE_NONE, "Machine is SVM Capable\n"); v3_init_svm_cpu(cpu_id); } else #endif -#ifdef CONFIG_VMX +#ifdef V3_CONFIG_VMX if (v3_is_vmx_capable()) { - PrintDebug("Machine is VMX Capable\n"); + PrintDebug(VM_NONE, VCORE_NONE, "Machine is VMX Capable\n"); v3_init_vmx_cpu(cpu_id); } else #endif { - PrintError("CPU has no virtualizationExtensions\n"); + PrintError(VM_NONE, VCORE_NONE, "CPU has no virtualization Extensions\n"); } } +static void deinit_cpu(void * arg) { + uint32_t cpu_id = (uint32_t)(addr_t)arg; + -void Init_V3(struct v3_os_hooks * hooks, int num_cpus) { - int i; + switch (v3_cpu_types[cpu_id]) { +#ifdef V3_CONFIG_SVM + case V3_SVM_CPU: + case V3_SVM_REV3_CPU: + PrintDebug(VM_NONE, VCORE_NONE, "Deinitializing SVM CPU %d\n", cpu_id); + v3_deinit_svm_cpu(cpu_id); + break; +#endif +#ifdef V3_CONFIG_VMX + case V3_VMX_CPU: + case V3_VMX_EPT_CPU: + case V3_VMX_EPT_UG_CPU: + PrintDebug(VM_NONE, VCORE_NONE, "Deinitializing VMX CPU %d\n", cpu_id); + v3_deinit_vmx_cpu(cpu_id); + break; +#endif + case V3_INVALID_CPU: + default: + PrintError(VM_NONE, VCORE_NONE, "CPU has no virtualization Extensions\n"); + break; + } +} - V3_Print("V3 Print statement to fix a Kitten page fault bug\n"); +/* Options are space-separated values of the form "X=Y", for example + * scheduler=EDF CPUs=1,2,3,4 + * THe following code pushes them into a hashtable for each of access + * by other code. Storage is allocated for keys and values as part + * of this process. XXX Need a way to deallocate this storage if the + * module is removed XXX + */ +static char *option_storage; +static struct hashtable *option_table; +static char *truevalue = "true"; + +static uint_t option_hash_fn(addr_t key) { + char * name = (char *)key; + return v3_hash_buffer((uint8_t *)name, strlen(name)); +} +static int option_eq_fn(addr_t key1, addr_t key2) { + char * name1 = (char *)key1; + char * name2 = (char *)key2; + + return (strcmp(name1, name2) == 0); +} + +void V3_parse_options(char *options) +{ + char *currKey = NULL, *currVal = NULL; + int parseKey = 1; + int len; + char *c; + if (!options) { + return; + } + + len = strlen(options); + option_storage = V3_Malloc(len + 1); + strcpy(option_storage, options); + c = option_storage; + + option_table = v3_create_htable(0, option_hash_fn, option_eq_fn); + while (c && *c) { + /* Skip whitespace */ + if (*c == ' ') { + *c = 0; + if (currKey) { + if (!currVal) { + currVal = truevalue; + } + v3_htable_insert(option_table, (addr_t)currKey, (addr_t)currVal); + parseKey = 1; + currKey = NULL; + currVal = NULL; + } + c++; + } else if (parseKey) { + if (!currKey) { + currKey = c; + } + if (*c == '=') { + parseKey = 0; + *c = 0; + } + c++; + } else /* !parseKey */ { + if (!currVal) { + currVal = c; + } + c++; + } + } + if (currKey) { + if (!currVal) { + currVal = truevalue; + } + v3_htable_insert(option_table, (addr_t)currKey, (addr_t)currVal); + } + return; +} + +char *v3_lookup_option(char *key) { + return (char *)v3_htable_search(option_table, (addr_t)(key)); +} + +void Init_V3(struct v3_os_hooks * hooks, char * cpu_mask, int num_cpus, char *options) { + int i = 0; + int minor = 0; + int major = 0; + + V3_Print(VM_NONE, VCORE_NONE, "V3 Print statement to fix a Kitten page fault bug\n"); // Set global variables. os_hooks = hooks; - for (i = 0; i < CONFIG_MAX_CPUS; i++) { + // Determine the global machine type + v3_mach_type = V3_INVALID_CPU; + + for (i = 0; i < V3_CONFIG_MAX_CPUS; i++) { v3_cpu_types[i] = V3_INVALID_CPU; } + // Parse host-os defined options into an easily-accessed format. + V3_parse_options(options); + // Register all the possible device types - v3_init_devices(); + V3_init_devices(); // Register all shadow paging handlers V3_init_shdw_paging(); + // Initialize the scheduler framework (must be before extensions) + V3_init_scheduling(); + + // Register all extensions + V3_init_extensions(); -#ifdef CONFIG_SYMMOD + // Enabling scheduler + V3_enable_scheduler(); + + +#ifdef V3_CONFIG_SYMMOD V3_init_symmod(); #endif -#ifdef CONFIG_INSTRUMENT_VMM - v3_init_instrumentation(); +#ifdef V3_CONFIG_CHECKPOINT + V3_init_checkpoint(); #endif + if ((hooks) && (hooks->call_on_cpu)) { + + for (i = 0; i < num_cpus; i++) { + major = i / 8; + minor = i % 8; + + if ((cpu_mask == NULL) || (*(cpu_mask + major) & (0x1 << minor))) { + V3_Print(VM_NONE, VCORE_NONE, "Initializing VMM extensions on cpu %d\n", i); + hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i); + + if (v3_mach_type == V3_INVALID_CPU) { + v3_mach_type = v3_cpu_types[i]; + } + } + } + } +} + + -#ifdef CONFIG_VNET - V3_init_vnet(); +void Shutdown_V3() { + int i; + + V3_deinit_devices(); + V3_deinit_shdw_paging(); + + V3_deinit_extensions(); + +#ifdef V3_CONFIG_SYMMOD + V3_deinit_symmod(); #endif - if ((hooks) && (hooks->call_on_cpu)) { +#ifdef V3_CONFIG_CHECKPOINT + V3_deinit_checkpoint(); +#endif - for (i = 0; i < num_cpus; i++) { - V3_Print("Initializing VMM extensions on cpu %d\n", i); - hooks->call_on_cpu(i, &init_cpu, (void *)(addr_t)i); + if ((os_hooks) && (os_hooks->call_on_cpu)) { + for (i = 0; i < V3_CONFIG_MAX_CPUS; i++) { + if (v3_cpu_types[i] != V3_INVALID_CPU) { + V3_Call_On_CPU(i, deinit_cpu, (void *)(addr_t)i); + //deinit_cpu((void *)(addr_t)i); + } } } + } @@ -117,46 +278,67 @@ v3_cpu_arch_t v3_get_cpu_type(int cpu_id) { } -struct v3_vm_info * v3_create_vm(void * cfg) { - struct v3_vm_info * vm = v3_config_guest(cfg); +struct v3_vm_info * v3_create_vm(void * cfg, void * priv_data, char * name) { + struct v3_vm_info * vm = v3_config_guest(cfg, priv_data); if (vm == NULL) { - PrintError("Could not configure guest\n"); + PrintError(VM_NONE, VCORE_NONE, "Could not configure guest\n"); return NULL; } + V3_Print(vm, VCORE_NONE, "CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip)); + + if (name == NULL) { + name = "[V3_VM]"; + } else if (strlen(name) >= 128) { + PrintError(vm, VCORE_NONE,"VM name is too long. Will be truncated to 128 chars.\n"); + } + + memset(vm->name, 0, 128); + strncpy(vm->name, name, 127); + + /* + * Register this VM with the palacios scheduler. It will ask for admission + * prior to launch. + */ + if(v3_scheduler_register_vm(vm) == -1) { + + PrintError(vm, VCORE_NONE,"Error registering VM with scheduler\n"); + } + return vm; } -static int start_core(void *p) -{ - struct guest_info * info = (struct guest_info*)p; - PrintDebug("core %u: in start_core\n",info->cpu_id); - - // we assume here that the APs are in INIT mode - // and only the BSP is in REAL - // the per-architecture code will rely on this - // assumption +static int start_core(void * p) +{ + struct guest_info * core = (struct guest_info *)p; + + if (v3_scheduler_register_core(core) == -1){ + PrintError(core->vm_info, core,"Error initializing scheduling in core %d\n", core->vcpu_id); + } + PrintDebug(core->vm_info,core,"virtual core %u (on logical core %u): in start_core (RIP=%p)\n", + core->vcpu_id, core->pcpu_id, (void *)(addr_t)core->rip); - switch (v3_cpu_types[info->cpu_id]) { -#ifdef CONFIG_SVM + switch (v3_mach_type) { +#ifdef V3_CONFIG_SVM case V3_SVM_CPU: case V3_SVM_REV3_CPU: - return v3_start_svm_guest(info); + return v3_start_svm_guest(core); break; #endif -#if CONFIG_VMX +#if V3_CONFIG_VMX case V3_VMX_CPU: case V3_VMX_EPT_CPU: - return v3_start_vmx_guest(info); + case V3_VMX_EPT_UG_CPU: + return v3_start_vmx_guest(core); break; #endif default: - PrintError("Attempting to enter a guest on an invalid CPU\n"); + PrintError(core->vm_info, core, "Attempting to enter a guest on an invalid CPU\n"); return -1; } // should not happen @@ -164,161 +346,540 @@ static int start_core(void *p) } -static uint32_t get_next_core(unsigned int cpu_mask, uint32_t last_proc) -{ - uint32_t proc_to_use; +// For the moment very ugly. Eventually we will shift the cpu_mask to an arbitrary sized type... +#define MAX_CORES 32 - PrintDebug("In get_next_core cpu_mask=0x%x last_proc=%u\n",cpu_mask,last_proc); - - proc_to_use=(last_proc+1) % 32; // only 32 procs - // This will wrap around, and eventually we can use proc 0, - // since that's clearly available - while (!((cpu_mask >> proc_to_use)&0x1)) { - proc_to_use=(proc_to_use+1)%32; - } - return proc_to_use; -} int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) { uint32_t i; - uint32_t last_proc; - uint32_t proc_to_use; - char tname[16]; + uint8_t * core_mask = (uint8_t *)&cpu_mask; // This is to make future expansion easier + uint32_t avail_cores = 0; + int vcore_id = 0; - V3_Print("V3 -- Starting VM (%u cores)\n",vm->num_cores); - // We assume that we are running on CPU 0 of the underlying system - last_proc=0; + if (vm->run_state != VM_STOPPED) { + PrintError(vm, VCORE_NONE, "VM has already been launched (state=%d)\n", (int)vm->run_state); + return -1; + } - // We will fork off cores 1..n first, then boot core zero - // for the AP, we need to create threads + // Do not run if any core is using shadow paging and we are out of 4 GB bounds + for (i=0;inum_cores;i++) { + if (vm->cores[i].shdw_pg_mode == SHADOW_PAGING) { + if ((vm->mem_map.base_region.host_addr + vm->mem_size ) >= 0x100000000ULL) { + PrintError(vm, VCORE_NONE, "Base memory region exceeds 4 GB boundary with shadow paging enabled on core %d.\n",i); + PrintError(vm, VCORE_NONE, "Any use of non-64 bit mode in the guest is likely to fail in this configuration.\n"); + PrintError(vm, VCORE_NONE, "If you would like to proceed anyway, remove this check and recompile Palacios.\n"); + PrintError(vm, VCORE_NONE, "Alternatively, change this VM to use nested paging.\n"); + return -1; + } + } + } + + + + /// CHECK IF WE ARE MULTICORE ENABLED.... + + V3_Print(vm, VCORE_NONE, "V3 -- Starting VM (%u cores)\n", vm->num_cores); + V3_Print(vm, VCORE_NONE, "CORE 0 RIP=%p\n", (void *)(addr_t)(vm->cores[0].rip)); + + + // Check that enough cores are present in the mask to handle vcores + for (i = 0; i < MAX_CORES; i++) { + int major = i / 8; + int minor = i % 8; + + if (core_mask[major] & (0x1 << minor)) { + if (v3_cpu_types[i] == V3_INVALID_CPU) { + core_mask[major] &= ~(0x1 << minor); + } else { + avail_cores++; + } + } + } + + + vm->avail_cores = avail_cores; - for (i = 1; i < vm->num_cores; i++) { - if (!os_hooks->start_thread_on_cpu) { - PrintError("Host OS does not support start_thread_on_cpu - FAILING\n"); - return -1; + if (v3_scheduler_admit_vm(vm) != 0){ + PrintError(vm, VCORE_NONE,"Error admitting VM %s for scheduling", vm->name); + } + + vm->run_state = VM_RUNNING; + + // Spawn off threads for each core. + // We work backwards, so that core 0 is always started last. + for (i = 0, vcore_id = vm->num_cores - 1; (i < MAX_CORES) && (vcore_id >= 0); i++) { + int major = 0; + int minor = 0; + struct guest_info * core = &(vm->cores[vcore_id]); + char * specified_cpu = v3_cfg_val(core->core_cfg_data, "target_cpu"); + uint32_t core_idx = 0; + + if (specified_cpu != NULL) { + core_idx = atoi(specified_cpu); + + if ((core_idx < 0) || (core_idx >= MAX_CORES)) { + PrintError(vm, VCORE_NONE, "Target CPU out of bounds (%d) (MAX_CORES=%d)\n", core_idx, MAX_CORES); + } + + i--; // We reset the logical core idx. Not strictly necessary I guess... + } else { + core_idx = i; } - proc_to_use=get_next_core(cpu_mask,last_proc); - last_proc=proc_to_use; + major = core_idx / 8; + minor = core_idx % 8; + + if ((core_mask[major] & (0x1 << minor)) == 0) { + PrintError(vm, VCORE_NONE, "Logical CPU %d not available for virtual core %d; not started\n", + core_idx, vcore_id); - // vm->cores[i].cpu_id=i; - // vm->cores[i].physical_cpu_id=proc_to_use; + if (specified_cpu != NULL) { + PrintError(vm, VCORE_NONE, "CPU was specified explicitly (%d). HARD ERROR\n", core_idx); + v3_stop_vm(vm); + return -1; + } + + continue; + } - PrintDebug("Starting virtual core %u on logical core %u\n",i,proc_to_use); + PrintDebug(vm, VCORE_NONE, "Starting virtual core %u on logical core %u\n", + vcore_id, core_idx); - sprintf(tname,"core%u",i); + sprintf(core->exec_name, "%s-%u", vm->name, vcore_id); - PrintDebug("run: core=%u, func=0x%p, arg=0x%p, name=%s\n", - proc_to_use, start_core, &(vm->cores[i]), tname); + PrintDebug(vm, VCORE_NONE, "run: core=%u, func=0x%p, arg=0x%p, name=%s\n", + core_idx, start_core, core, core->exec_name); - // TODO: actually manage these threads instead of just launching them - if (!(os_hooks->start_thread_on_cpu(proc_to_use,start_core,&(vm->cores[i]),tname))) { - PrintError("Thread launch failed\n"); + core->core_run_state = CORE_STOPPED; // core zero will turn itself on + core->pcpu_id = core_idx; + core->core_thread = V3_CREATE_THREAD_ON_CPU(core_idx, start_core, core, core->exec_name); + + if (core->core_thread == NULL) { + PrintError(vm, VCORE_NONE, "Thread launch failed\n"); + v3_stop_vm(vm); return -1; } + + vcore_id--; + } + + if (vcore_id >= 0) { + PrintError(vm, VCORE_NONE, "Error starting VM: Not enough available CPU cores\n"); + v3_stop_vm(vm); + return -1; + } + + + return 0; + +} + + +int v3_reset_vm_core(struct guest_info * core, addr_t rip) { + + switch (v3_cpu_types[core->pcpu_id]) { +#ifdef V3_CONFIG_SVM + case V3_SVM_CPU: + case V3_SVM_REV3_CPU: + PrintDebug(core->vm_info, core, "Resetting SVM Guest CPU %d\n", core->vcpu_id); + return v3_reset_svm_vm_core(core, rip); +#endif +#ifdef V3_CONFIG_VMX + case V3_VMX_CPU: + case V3_VMX_EPT_CPU: + case V3_VMX_EPT_UG_CPU: + PrintDebug(core->vm_info, core, "Resetting VMX Guest CPU %d\n", core->vcpu_id); + return v3_reset_vmx_vm_core(core, rip); +#endif + case V3_INVALID_CPU: + default: + PrintError(core->vm_info, core, "CPU has no virtualization Extensions\n"); + break; + } + + return -1; +} + + + +/* move a virtual core to different physical core */ +int v3_move_vm_core(struct v3_vm_info * vm, int vcore_id, int target_cpu) { + struct guest_info * core = NULL; + + if ((vcore_id < 0) || (vcore_id >= vm->num_cores)) { + PrintError(vm, VCORE_NONE, "Attempted to migrate invalid virtual core (%d)\n", vcore_id); + return -1; } - // vm->cores[0].cpu_id=0; - // vm->cores[0].physical_cpu_id=0; + core = &(vm->cores[vcore_id]); - // Finally launch the BSP on core 0 - sprintf(tname,"core%u",0); + if (target_cpu == core->pcpu_id) { + PrintError(vm, core, "Attempted to migrate to local core (%d)\n", target_cpu); + // well that was pointless + return 0; + } -#if CONFIG_LINUX - if (vm->num_cores==1) { - start_core(&(vm->cores[0])); + if (core->core_thread == NULL) { + PrintError(vm, core, "Attempted to migrate a core without a valid thread context\n"); return -1; - } else { - if (!os_hooks->start_thread_on_cpu(0,start_core,&(vm->cores[0]),tname)) { - PrintError("Thread launch failed\n"); + } + + while (v3_raise_barrier(vm, NULL) == -1); + + V3_Print(vm, core, "Performing Migration from %d to %d\n", core->pcpu_id, target_cpu); + + // Double check that we weren't preemptively migrated + if (target_cpu != core->pcpu_id) { + + V3_Print(vm, core, "Moving Core\n"); + + +#ifdef V3_CONFIG_VMX + switch (v3_cpu_types[core->pcpu_id]) { + case V3_VMX_CPU: + case V3_VMX_EPT_CPU: + case V3_VMX_EPT_UG_CPU: + PrintDebug(vm, core, "Flushing VMX Guest CPU %d\n", core->vcpu_id); + V3_Call_On_CPU(core->pcpu_id, (void (*)(void *))v3_flush_vmx_vm_core, (void *)core); + break; + default: + break; + } +#endif + + if (V3_MOVE_THREAD_TO_CPU(target_cpu, core->core_thread) != 0) { + PrintError(vm, core, "Failed to move Vcore %d to CPU %d\n", + core->vcpu_id, target_cpu); + v3_lower_barrier(vm); return -1; + } + + /* There will be a benign race window here: + core->pcpu_id will be set to the target core before its fully "migrated" + However the core will NEVER run on the old core again, its just in flight to the new core + */ + core->pcpu_id = target_cpu; + + V3_Print(vm, core, "core now at %d\n", core->pcpu_id); + } + + v3_lower_barrier(vm); + + return 0; +} + + + +int v3_stop_vm(struct v3_vm_info * vm) { + + if ((vm->run_state != VM_RUNNING) && + (vm->run_state != VM_SIMULATING)) { + PrintError(vm, VCORE_NONE,"Tried to stop VM in invalid runstate (%d)\n", vm->run_state); + return -1; + } + + vm->run_state = VM_STOPPED; + + // Sanity check to catch any weird execution states + if (v3_wait_for_barrier(vm, NULL) == 0) { + v3_lower_barrier(vm); + } + + // XXX force exit all cores via a cross call/IPI XXX + + while (1) { + int i = 0; + int still_running = 0; + + for (i = 0; i < vm->num_cores; i++) { + if (vm->cores[i].core_run_state != CORE_STOPPED) { + still_running = 1; + } + } + + if (still_running == 0) { + break; } + + v3_yield(NULL,-1); } -#else - if (!os_hooks->start_thread_on_cpu(0,start_core,&(vm->cores[0]),tname)) { - PrintError("Thread launch failed\n"); + + V3_Print(vm, VCORE_NONE,"VM stopped. Returning\n"); + + return 0; +} + + +int v3_pause_vm(struct v3_vm_info * vm) { + + if (vm->run_state != VM_RUNNING) { + PrintError(vm, VCORE_NONE,"Tried to pause a VM that was not running\n"); return -1; } -#endif + + while (v3_raise_barrier(vm, NULL) == -1); + + vm->run_state = VM_PAUSED; return 0; +} + + +int v3_continue_vm(struct v3_vm_info * vm) { + + if (vm->run_state != VM_PAUSED) { + PrintError(vm, VCORE_NONE,"Tried to continue a VM that was not paused\n"); + return -1; + } + + vm->run_state = VM_RUNNING; + + v3_lower_barrier(vm); + return 0; } -#ifdef __V3_32BIT__ -v3_cpu_mode_t v3_get_host_cpu_mode() { - uint32_t cr4_val; - struct cr4_32 * cr4; +static int sim_callback(struct guest_info * core, void * private_data) { + struct v3_bitmap * timeout_map = private_data; + + v3_bitmap_set(timeout_map, core->vcpu_id); + + V3_Print(core->vm_info, core, "Simulation callback activated (guest_rip=%p)\n", (void *)core->rip); + + while (v3_bitmap_check(timeout_map, core->vcpu_id) == 1) { + v3_yield(NULL,-1); + } + + return 0; +} - __asm__ ( - "movl %%cr4, %0; " - : "=r"(cr4_val) - ); + + +int v3_simulate_vm(struct v3_vm_info * vm, unsigned int msecs) { + struct v3_bitmap timeout_map; + int i = 0; + int all_blocked = 0; + uint64_t cycles = 0; + uint64_t cpu_khz = V3_CPU_KHZ(); + + if (vm->run_state != VM_PAUSED) { + PrintError(vm, VCORE_NONE,"VM must be paused before simulation begins\n"); + return -1; + } + + /* AT this point VM is paused */ - cr4 = (struct cr4_32 *)&(cr4_val); + // initialize bitmap + v3_bitmap_init(&timeout_map, vm->num_cores); - if (cr4->pae == 1) { - return PROTECTED_PAE; - } else { - return PROTECTED; + + + + // calculate cycles from msecs... + // IMPORTANT: Floating point not allowed. + cycles = (msecs * cpu_khz); + + + + V3_Print(vm, VCORE_NONE,"Simulating %u msecs (%llu cycles) [CPU_KHZ=%llu]\n", msecs, cycles, cpu_khz); + + // set timeout + + for (i = 0; i < vm->num_cores; i++) { + if (v3_add_core_timeout(&(vm->cores[i]), cycles, sim_callback, &timeout_map) == -1) { + PrintError(vm, VCORE_NONE,"Could not register simulation timeout for core %d\n", i); + return -1; + } + } + + V3_Print(vm, VCORE_NONE,"timeouts set on all cores\n "); + + + // Run the simulation +// vm->run_state = VM_SIMULATING; + vm->run_state = VM_RUNNING; + v3_lower_barrier(vm); + + + V3_Print(vm, VCORE_NONE,"Barrier lowered: We are now Simulating!!\n"); + + // block until simulation is complete + while (all_blocked == 0) { + all_blocked = 1; + + for (i = 0; i < vm->num_cores; i++) { + if (v3_bitmap_check(&timeout_map, i) == 0) { + all_blocked = 0; + } + } + + if (all_blocked == 1) { + break; + } + + v3_yield(NULL,-1); + } + + + V3_Print(vm, VCORE_NONE,"Simulation is complete\n"); + + // Simulation is complete + // Reset back to PAUSED state + + v3_raise_barrier_nowait(vm, NULL); + vm->run_state = VM_PAUSED; + + v3_bitmap_reset(&timeout_map); + + v3_wait_for_barrier(vm, NULL); + + return 0; + +} + +int v3_get_state_vm(struct v3_vm_info *vm, struct v3_vm_state *s) +{ + uint32_t i; + uint32_t numcores = s->num_vcores > vm->num_cores ? vm->num_cores : s->num_vcores; + + switch (vm->run_state) { + case VM_INVALID: s->state = V3_VM_INVALID; break; + case VM_RUNNING: s->state = V3_VM_RUNNING; break; + case VM_STOPPED: s->state = V3_VM_STOPPED; break; + case VM_PAUSED: s->state = V3_VM_PAUSED; break; + case VM_ERROR: s->state = V3_VM_ERROR; break; + case VM_SIMULATING: s->state = V3_VM_SIMULATING; break; + default: s->state = V3_VM_UNKNOWN; break; + } + + s->mem_base_paddr = (void*)(vm->mem_map.base_region.host_addr); + s->mem_size = vm->mem_size; + + s->num_vcores = numcores; + + for (i=0;icores[i].core_run_state) { + case CORE_INVALID: s->vcore[i].state = V3_VCORE_INVALID; break; + case CORE_RUNNING: s->vcore[i].state = V3_VCORE_RUNNING; break; + case CORE_STOPPED: s->vcore[i].state = V3_VCORE_STOPPED; break; + default: s->vcore[i].state = V3_VCORE_UNKNOWN; break; + } + switch (vm->cores[i].cpu_mode) { + case REAL: s->vcore[i].cpu_mode = V3_VCORE_CPU_REAL; break; + case PROTECTED: s->vcore[i].cpu_mode = V3_VCORE_CPU_PROTECTED; break; + case PROTECTED_PAE: s->vcore[i].cpu_mode = V3_VCORE_CPU_PROTECTED_PAE; break; + case LONG: s->vcore[i].cpu_mode = V3_VCORE_CPU_LONG; break; + case LONG_32_COMPAT: s->vcore[i].cpu_mode = V3_VCORE_CPU_LONG_32_COMPAT; break; + case LONG_16_COMPAT: s->vcore[i].cpu_mode = V3_VCORE_CPU_LONG_16_COMPAT; break; + default: s->vcore[i].cpu_mode = V3_VCORE_CPU_UNKNOWN; break; } + switch (vm->cores[i].shdw_pg_mode) { + case SHADOW_PAGING: s->vcore[i].mem_state = V3_VCORE_MEM_STATE_SHADOW; break; + case NESTED_PAGING: s->vcore[i].mem_state = V3_VCORE_MEM_STATE_NESTED; break; + default: s->vcore[i].mem_state = V3_VCORE_MEM_STATE_UNKNOWN; break; + } + switch (vm->cores[i].mem_mode) { + case PHYSICAL_MEM: s->vcore[i].mem_mode = V3_VCORE_MEM_MODE_PHYSICAL; break; + case VIRTUAL_MEM: s->vcore[i].mem_mode=V3_VCORE_MEM_MODE_VIRTUAL; break; + default: s->vcore[i].mem_mode=V3_VCORE_MEM_MODE_UNKNOWN; break; + } + + s->vcore[i].pcore=vm->cores[i].pcpu_id; + s->vcore[i].last_rip=(void*)(vm->cores[i].rip); + s->vcore[i].num_exits=vm->cores[i].num_exits; + } + + return 0; } -#elif __V3_64BIT__ -v3_cpu_mode_t v3_get_host_cpu_mode() { - return LONG; +#ifdef V3_CONFIG_CHECKPOINT +#include + +int v3_save_vm(struct v3_vm_info * vm, char * store, char * url) { + return v3_chkpt_save_vm(vm, store, url); } -#endif +int v3_load_vm(struct v3_vm_info * vm, char * store, char * url) { + return v3_chkpt_load_vm(vm, store, url); +} + +#ifdef V3_CONFIG_LIVE_MIGRATION +int v3_send_vm(struct v3_vm_info * vm, char * store, char * url) { + return v3_chkpt_send_vm(vm, store, url); +} -#define V3_Yield(addr) \ - do { \ - extern struct v3_os_hooks * os_hooks; \ - if ((os_hooks) && (os_hooks)->yield_cpu) { \ - (os_hooks)->yield_cpu(); \ - } \ - } while (0) \ +int v3_receive_vm(struct v3_vm_info * vm, char * store, char * url) { + return v3_chkpt_receive_vm(vm, store, url); +} +#endif +#endif -void v3_yield_cond(struct guest_info * info) { - uint64_t cur_cycle; - cur_cycle = v3_get_host_time(&info->time_state); - if (cur_cycle > (info->yield_start_cycle + info->vm_info->yield_cycle_period)) { +int v3_free_vm(struct v3_vm_info * vm) { + int i = 0; + // deinitialize guest (free memory, etc...) - /* - PrintDebug("Conditional Yield (cur_cyle=%p, start_cycle=%p, period=%p)\n", - (void *)cur_cycle, (void *)info->yield_start_cycle, (void *)info->yield_cycle_period); - */ - V3_Yield(); - info->yield_start_cycle = v3_get_host_time(&info->time_state); + if ((vm->run_state != VM_STOPPED) && + (vm->run_state != VM_ERROR)) { + PrintError(vm, VCORE_NONE,"Tried to Free VM in invalid runstate (%d)\n", vm->run_state); + return -1; } + + v3_free_vm_devices(vm); + + // free cores + for (i = 0; i < vm->num_cores; i++) { + v3_free_core(&(vm->cores[i])); + } + + // free vm + v3_free_vm_internal(vm); + + v3_free_config(vm); + + V3_Free(vm); + + return 0; } -/* - * unconditional cpu yield - * if the yielding thread is a guest context, the guest quantum is reset on resumption - * Non guest context threads should call this function with a NULL argument - */ -void v3_yield(struct guest_info * info) { - V3_Yield(); +#ifdef __V3_32BIT__ - if (info) { - info->yield_start_cycle = v3_get_host_time(&info->time_state); +v3_cpu_mode_t v3_get_host_cpu_mode() { + uint32_t cr4_val; + struct cr4_32 * cr4; + + __asm__ ( + "movl %%cr4, %0; " + : "=r"(cr4_val) + ); + + + cr4 = (struct cr4_32 *)&(cr4_val); + + if (cr4->pae == 1) { + return PROTECTED_PAE; + } else { + return PROTECTED; } } +#elif __V3_64BIT__ +v3_cpu_mode_t v3_get_host_cpu_mode() { + return LONG; +} +#endif void v3_print_cond(const char * fmt, ...) { if (v3_dbg_enable == 1) { @@ -329,13 +890,12 @@ void v3_print_cond(const char * fmt, ...) { vsnprintf(buf, 2048, fmt, ap); va_end(ap); - V3_Print("%s", buf); + V3_Print(VM_NONE, VCORE_NONE,"%s", buf); } } - void v3_interrupt_cpu(struct v3_vm_info * vm, int logical_cpu, int vector) { extern struct v3_os_hooks * os_hooks; @@ -346,35 +906,42 @@ void v3_interrupt_cpu(struct v3_vm_info * vm, int logical_cpu, int vector) { -unsigned int v3_get_cpu_id() { - extern struct v3_os_hooks * os_hooks; - unsigned int ret = (unsigned int)-1; - - if ((os_hooks) && (os_hooks)->get_cpu) { - ret = os_hooks->get_cpu(); - } - - return ret; -} - - - int v3_vm_enter(struct guest_info * info) { - switch (v3_cpu_types[info->cpu_id]) { -#ifdef CONFIG_SVM + switch (v3_mach_type) { +#ifdef V3_CONFIG_SVM case V3_SVM_CPU: case V3_SVM_REV3_CPU: return v3_svm_enter(info); break; #endif -#if CONFIG_VMX +#if V3_CONFIG_VMX case V3_VMX_CPU: case V3_VMX_EPT_CPU: + case V3_VMX_EPT_UG_CPU: return v3_vmx_enter(info); break; #endif default: - PrintError("Attemping to enter a guest on an invalid CPU\n"); + PrintError(info->vm_info, info, "Attemping to enter a guest on an invalid CPU\n"); return -1; } } + + +void *v3_get_host_vm(struct v3_vm_info *x) +{ + if (x) { + return x->host_priv_data; + } else { + return 0; + } +} + +int v3_get_vcore(struct guest_info *x) +{ + if (x) { + return x->vcpu_id; + } else { + return -1; + } +}