X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_config.c;h=f24dc3832e5cb9612ca0b45d8131d6105ef4fa6a;hb=374b2d6d22a0e0dc6ed8d3d628e635ab935072e0;hp=81a37d3ca3ecd6234ed61cbfe9fc22c5b171c3da;hpb=5bf6d0c260240e314876a2fca8e3fd56bd6a1029;p=palacios.git diff --git a/palacios/src/palacios/vmm_config.c b/palacios/src/palacios/vmm_config.c index 81a37d3..f24dc38 100644 --- a/palacios/src/palacios/vmm_config.c +++ b/palacios/src/palacios/vmm_config.c @@ -28,18 +28,13 @@ #include #include #include +#include +#include +#include +#include -#include -#include -#ifdef CONFIG_SYMBIOTIC -#include -#ifdef CONFIG_SYMBIOTIC_SWAP -#include -#endif - -#endif #include @@ -62,8 +57,10 @@ struct file_idx_table { -static int setup_memory_map(struct guest_info * info, struct v3_config * config_ptr); -static int setup_devices(struct guest_info * info, struct v3_config * config_ptr); +static int setup_memory_map(struct v3_vm_info * vm, v3_cfg_tree_t * cfg); +static int setup_extensions(struct v3_vm_info * vm, v3_cfg_tree_t * cfg); +static int setup_devices(struct v3_vm_info * vm, v3_cfg_tree_t * cfg); + char * v3_cfg_val(v3_cfg_tree_t * tree, char * tag) { @@ -76,9 +73,16 @@ char * v3_cfg_val(v3_cfg_tree_t * tree, char * tag) { return NULL; } - val = (attrib == NULL) ? v3_xml_txt(child_entry): attrib; - - return val; + if (attrib == NULL) { + val = v3_xml_txt(child_entry); + + if ( val[0] == 0 ) + val = NULL; + } else { + val = attrib; + } + + return val; } v3_cfg_tree_t * v3_cfg_subtree(v3_cfg_tree_t * tree, char * tag) { @@ -91,10 +95,10 @@ v3_cfg_tree_t * v3_cfg_next_branch(v3_cfg_tree_t * tree) { -struct v3_cfg_file * v3_cfg_get_file(struct guest_info * info, char * tag) { +struct v3_cfg_file * v3_cfg_get_file(struct v3_vm_info * vm, char * tag) { struct v3_cfg_file * file = NULL; - file = (struct v3_cfg_file *)v3_htable_search(info->cfg_data->file_table, (addr_t)tag); + file = (struct v3_cfg_file *)v3_htable_search(vm->cfg_data->file_table, (addr_t)tag); return file; } @@ -163,7 +167,6 @@ static struct v3_config * parse_config(void * cfg_blob) { return NULL; } - V3_Print("File index=%d id=%s\n", idx, id); strncpy(file->tag, id, 256); @@ -188,97 +191,163 @@ static struct v3_config * parse_config(void * cfg_blob) { } -static int pre_config_guest(struct guest_info * info, struct v3_config * config_ptr) { - extern v3_cpu_arch_t v3_cpu_types[]; - char * memory_str = v3_cfg_val(config_ptr->cfg, "memory"); - char * paging = v3_cfg_val(config_ptr->cfg, "paging"); - char * schedule_hz_str = v3_cfg_val(config_ptr->cfg, "schedule_hz"); - char * vm_class = v3_cfg_val(config_ptr->cfg, "class"); - uint32_t sched_hz = 100; // set the schedule frequency to 100 HZ +static inline uint32_t get_alignment(char * align_str) { + // default is 4KB alignment + uint32_t alignment = PAGE_SIZE_4KB; + + if (align_str != NULL) { + if (strcasecmp(align_str, "2MB") == 0) { + alignment = PAGE_SIZE_2MB; + } else if (strcasecmp(align_str, "4MB") == 0) { + alignment = PAGE_SIZE_4MB; + } + } +#ifndef CONFIG_ALIGNED_PG_ALLOC + if (alignment != PAGE_SIZE_4KB) { + PrintError("Aligned page allocations are not supported in this host (requested alignment=%d)\n", alignment); + PrintError("Ignoring alignment request\n"); + } +#endif + + return alignment; +} + + +static int pre_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * vm_cfg) { + char * memory_str = v3_cfg_val(vm_cfg, "memory"); + char * schedule_hz_str = v3_cfg_val(vm_cfg, "schedule_hz"); + char * vm_class = v3_cfg_val(vm_cfg, "class"); + char * align_str = v3_cfg_val(v3_cfg_subtree(vm_cfg, "memory"), "alignment"); + uint32_t sched_hz = 100; // set the schedule frequency to 100 HZ + + if (!memory_str) { PrintError("Memory is a required configuration parameter\n"); return -1; } PrintDebug("Memory=%s\n", memory_str); + if (align_str) { + PrintDebug("Alignment=%s\n", align_str); + } else { + PrintDebug("Alignment defaulted to 4KB.\n"); + } // Amount of ram the Guest will have, always in MB - info->mem_size = atoi(memory_str) * 1024 * 1024; - + vm->mem_size = (addr_t)atoi(memory_str) * 1024 * 1024; + vm->mem_align = get_alignment(align_str); + + + PrintDebug("Alignment for %lu bytes of memory computed as 0x%x\n", vm->mem_size, vm->mem_align); + if (strcasecmp(vm_class, "PC") == 0) { - info->vm_class = V3_PC_VM; + vm->vm_class = V3_PC_VM; } else { PrintError("Invalid VM class\n"); return -1; } - - /* - * Initialize the subsystem data strutures - */ #ifdef CONFIG_TELEMETRY { - char * telemetry = v3_cfg_val(config_ptr->cfg, "telemetry"); + char * telemetry = v3_cfg_val(vm_cfg, "telemetry"); // This should go first, because other subsystems will depend on the guest_info flag if ((telemetry) && (strcasecmp(telemetry, "enable") == 0)) { - info->enable_telemetry = 1; - v3_init_telemetry(info); + vm->enable_telemetry = 1; } else { - info->enable_telemetry = 0; + vm->enable_telemetry = 0; } } #endif - v3_init_hypercall_map(info); - v3_init_io_map(info); - v3_init_msr_map(info); - v3_init_cpuid_map(info); - v3_init_host_events(info); - - // Initialize the memory map - if (v3_init_shadow_map(info) == -1) { - PrintError("Could not initialize shadow map\n"); + if (v3_init_vm(vm) == -1) { + PrintError("Failed to initialize VM\n"); return -1; } - - if ((v3_cpu_types[info->cpu_id] == V3_SVM_REV3_CPU) && - (paging) && (strcasecmp(paging, "nested") == 0)) { - PrintDebug("Guest Page Mode: NESTED_PAGING\n"); - info->shdw_pg_mode = NESTED_PAGING; - } else { - PrintDebug("Guest Page Mode: SHADOW_PAGING\n"); - v3_init_shadow_page_state(info); - info->shdw_pg_mode = SHADOW_PAGING; - } -#ifdef CONFIG_SYMBIOTIC - v3_init_sym_iface(info); -#endif - v3_init_time(info); - v3_init_interrupt_state(info); - v3_init_exception_state(info); - v3_init_dev_mgr(info); - v3_init_decoder(info); - -#ifdef CONFIG_SYMBIOTIC_SWAP - PrintDebug("initializing symbiotic swap\n"); - v3_init_sym_swap(info); -#endif - if (schedule_hz_str) { + if (schedule_hz_str) { sched_hz = atoi(schedule_hz_str); } PrintDebug("CPU_KHZ = %d, schedule_freq=%p\n", V3_CPU_KHZ(), (void *)(addr_t)sched_hz); - info->yield_cycle_period = (V3_CPU_KHZ() * 1000) / sched_hz; + vm->yield_cycle_period = (V3_CPU_KHZ() * 1000) / sched_hz; - if (info->vm_class == V3_PC_VM) { - if (pre_config_pc(info, config_ptr) == -1) { + return 0; +} + + +static int determine_paging_mode(struct guest_info * info, v3_cfg_tree_t * core_cfg) { + extern v3_cpu_arch_t v3_cpu_types[]; + + v3_cfg_tree_t * vm_tree = info->vm_info->cfg_data->cfg; + v3_cfg_tree_t * pg_tree = v3_cfg_subtree(vm_tree, "paging"); + char * pg_mode = v3_cfg_val(pg_tree, "mode"); + char * page_size = v3_cfg_val(pg_tree, "page_size"); + + PrintDebug("Paging mode specified as %s\n", pg_mode); + + if (pg_mode) { + if ((strcasecmp(pg_mode, "nested") == 0)) { + // we assume symmetric cores, so if core 0 has nested paging they all do + if (v3_cpu_types[0] == V3_SVM_REV3_CPU) { + info->shdw_pg_mode = NESTED_PAGING; + } else { + PrintError("Nested paging not supported on this hardware. Defaulting to shadow paging\n"); + info->shdw_pg_mode = SHADOW_PAGING; + } + } else if ((strcasecmp(pg_mode, "shadow") == 0)) { + info->shdw_pg_mode = SHADOW_PAGING; + } else { + PrintError("Invalid paging mode (%s) specified in configuration. Defaulting to shadow paging\n", pg_mode); + info->shdw_pg_mode = SHADOW_PAGING; + } + } else { + PrintDebug("No paging type specified in configuration. Defaulting to shadow paging\n"); + info->shdw_pg_mode = SHADOW_PAGING; + } + + + if (info->shdw_pg_mode == NESTED_PAGING) { + PrintDebug("Guest Paging Mode: NESTED_PAGING\n"); + if (strcasecmp(page_size, "4kb") == 0) { /* TODO: this may not be an ideal place for this */ + info->vm_info->paging_size = PAGING_4KB; + } else if (strcasecmp(page_size, "2mb") == 0) { + info->vm_info->paging_size = PAGING_2MB; + } else { + PrintError("Invalid VM paging size: '%s'\n", page_size); + return -1; + } + PrintDebug("VM page size=%s\n", page_size); + } else if (info->shdw_pg_mode == SHADOW_PAGING) { + PrintDebug("Guest Paging Mode: SHADOW_PAGING\n"); + } else { + PrintError("Guest paging mode incorrectly set.\n"); + return -1; + } + + if (v3_cfg_val(pg_tree, "large_pages") != NULL) { + if (strcasecmp(v3_cfg_val(pg_tree, "large_pages"), "true") == 0) { + info->use_large_pages = 1; + PrintDebug("Use of large pages in memory virtualization enabled.\n"); + } + } + return 0; +} + +static int pre_config_core(struct guest_info * info, v3_cfg_tree_t * core_cfg) { + if (determine_paging_mode(info, core_cfg) != 0) { + return -1; + } + + v3_init_core(info); + + if (info->vm_info->vm_class == V3_PC_VM) { + if (pre_config_pc_core(info, core_cfg) == -1) { PrintError("PC Post configuration failure\n"); return -1; } @@ -291,28 +360,59 @@ static int pre_config_guest(struct guest_info * info, struct v3_config * config_ } -static int post_config_guest(struct guest_info * info, struct v3_config * config_ptr) { + +static int post_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + + vm->run_state = VM_STOPPED; // Configure the memory map for the guest - if (setup_memory_map(info, config_ptr) == -1) { + if (setup_memory_map(vm, cfg) == -1) { PrintError("Setting up guest memory map failed...\n"); return -1; } - - //v3_hook_io_port(info, 1234, &IO_Read, NULL, info); - - if (setup_devices(info, config_ptr) == -1) { + + /* + * Initialize configured extensions + */ + if (setup_extensions(vm, cfg) == -1) { + PrintError("Failed to setup extensions\n"); + return -1; + } + + /* + * Initialize configured devices + */ + if (setup_devices(vm, cfg) == -1) { PrintError("Failed to setup devices\n"); return -1; } + // v3_print_io_map(info); - v3_print_msr_map(info); + v3_print_msr_map(vm); + + + if (vm->vm_class == V3_PC_VM) { + if (post_config_pc(vm, cfg) == -1) { + PrintError("PC Post configuration failure\n"); + return -1; + } + } else { + PrintError("Invalid VM Class\n"); + return -1; + } - info->run_state = VM_STOPPED; + return 0; +} + + + +static int post_config_core(struct guest_info * info, v3_cfg_tree_t * cfg) { - if (info->vm_class == V3_PC_VM) { - if (post_config_pc(info, config_ptr) == -1) { + info->core_run_state = CORE_STOPPED; + + if (info->vm_info->vm_class == V3_PC_VM) { + if (post_config_pc_core(info, cfg) == -1) { PrintError("PC Post configuration failure\n"); return -1; } @@ -327,70 +427,134 @@ static int post_config_guest(struct guest_info * info, struct v3_config * config -int v3_config_guest(struct guest_info * info, void * cfg_blob) { - v3_cpu_arch_t cpu_type = v3_get_cpu_type(v3_get_cpu_id()); +static struct v3_vm_info * allocate_guest(int num_cores) { + int guest_state_size = sizeof(struct v3_vm_info) + (sizeof(struct guest_info) * num_cores); + struct v3_vm_info * vm = V3_Malloc(guest_state_size); + + memset(vm, 0, guest_state_size); + + vm->num_cores = num_cores; + + return vm; +} + + + +struct v3_vm_info * v3_config_guest(void * cfg_blob, void * priv_data) { + v3_cpu_arch_t cpu_type = v3_get_cpu_type(V3_Get_CPU()); + struct v3_config * cfg_data = NULL; + struct v3_vm_info * vm = NULL; + int num_cores = 0; + int i = 0; + v3_cfg_tree_t * cores_cfg = NULL; + v3_cfg_tree_t * per_core_cfg = NULL; if (cpu_type == V3_INVALID_CPU) { PrintError("Configuring guest on invalid CPU\n"); - return -1; + return NULL; } - info->cfg_data = parse_config(cfg_blob); + cfg_data = parse_config(cfg_blob); - if (!info->cfg_data) { + if (!cfg_data) { PrintError("Could not parse configuration\n"); - return -1; + return NULL; + } + + cores_cfg = v3_cfg_subtree(cfg_data->cfg, "cores"); + + if (!cores_cfg) { + PrintError("Could not find core configuration (new config format required)\n"); + return NULL; } + num_cores = atoi(v3_cfg_val(cores_cfg, "count")); + if (num_cores == 0) { + PrintError("No cores specified in configuration\n"); + return NULL; + } + + V3_Print("Configuring %d cores\n", num_cores); + + vm = allocate_guest(num_cores); + + if (!vm) { + PrintError("Could not allocate %d core guest\n", vm->num_cores); + return NULL; + } + + vm->host_priv_data = priv_data; + + vm->cfg_data = cfg_data; + V3_Print("Preconfiguration\n"); - if (pre_config_guest(info, info->cfg_data) == -1) { + if (pre_config_vm(vm, vm->cfg_data->cfg) == -1) { PrintError("Error in preconfiguration\n"); - return -1; + return NULL; } - V3_Print("Arch dependent configuration\n"); + V3_Print("Per core configuration\n"); + per_core_cfg = v3_cfg_subtree(cores_cfg, "core"); - // init SVM/VMX -#ifdef CONFIG_SVM - if ((cpu_type == V3_SVM_CPU) || (cpu_type == V3_SVM_REV3_CPU)) { - if (v3_init_svm_vmcb(info, info->vm_class) == -1) { - PrintError("Error in SVM initialization\n"); - return -1; - } - } -#endif -#ifdef CONFIG_VMX - else if ((cpu_type == V3_VMX_CPU) || (cpu_type == V3_VMX_EPT_CPU)) { - if (v3_init_vmx_vmcs(info, info->vm_class) == -1) { - PrintError("Error in VMX initialization\n"); - return -1; + // per core configuration + for (i = 0; i < vm->num_cores; i++) { + struct guest_info * info = &(vm->cores[i]); + + info->cpu_id = i; + info->vm_info = vm; + info->core_cfg_data = per_core_cfg; + + if (pre_config_core(info, per_core_cfg) == -1) { + PrintError("Error in core %d preconfiguration\n", i); + return NULL; } - } -#endif - else { - PrintError("Invalid CPU Type\n"); - return -1; + + + per_core_cfg = v3_cfg_next_branch(per_core_cfg); } + V3_Print("Post Configuration\n"); - if (post_config_guest(info, info->cfg_data) == -1) { + if (post_config_vm(vm, vm->cfg_data->cfg) == -1) { PrintError("Error in postconfiguration\n"); - return -1; + return NULL; + } + + + per_core_cfg = v3_cfg_subtree(cores_cfg, "core"); + + // per core configuration + for (i = 0; i < vm->num_cores; i++) { + struct guest_info * info = &(vm->cores[i]); + + post_config_core(info, per_core_cfg); + + per_core_cfg = v3_cfg_next_branch(per_core_cfg); } V3_Print("Configuration successfull\n"); - return 0; + return vm; } +int v3_free_config(struct v3_vm_info * vm) { + + v3_free_htable(vm->cfg_data->file_table, 1, 0); + + v3_xml_free(vm->cfg_data->cfg); + V3_Free(vm->cfg_data); + return 0; +} -static int setup_memory_map(struct guest_info * info, struct v3_config * config_ptr) { - v3_cfg_tree_t * mem_region = v3_cfg_subtree(v3_cfg_subtree(config_ptr->cfg, "memmap"), "region"); + + +static int setup_memory_map(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + v3_cfg_tree_t * mem_region = v3_cfg_subtree(v3_cfg_subtree(cfg, "memmap"), "region"); while (mem_region) { addr_t start_addr = atox(v3_cfg_val(mem_region, "start")); @@ -398,7 +562,7 @@ static int setup_memory_map(struct guest_info * info, struct v3_config * config_ addr_t host_addr = atox(v3_cfg_val(mem_region, "host_addr")); - if (v3_add_shadow_mem(info, start_addr, end_addr, host_addr) == -1) { + if (v3_add_shadow_mem(vm, V3_MEM_CORE_ANY, start_addr, end_addr, host_addr) == -1) { PrintError("Could not map memory region: %p-%p => %p\n", (void *)start_addr, (void *)end_addr, (void *)host_addr); return -1; @@ -411,34 +575,47 @@ static int setup_memory_map(struct guest_info * info, struct v3_config * config_ } +static int setup_extensions(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + v3_cfg_tree_t * extension = v3_cfg_subtree(v3_cfg_subtree(cfg, "extensions"), "extension"); + while (extension) { + char * ext_name = v3_cfg_val(extension, "name"); + V3_Print("Configuring extension %s\n", ext_name); + if (v3_add_extension(vm, ext_name, extension) == -1) { + PrintError("Error adding extension %s\n", ext_name); + return -1; + } + extension = v3_cfg_next_branch(extension); + } + return 0; +} -static int setup_devices(struct guest_info * info, struct v3_config * config_ptr) { - v3_cfg_tree_t * device = v3_cfg_subtree(v3_cfg_subtree(config_ptr->cfg, "devices"), "device"); +static int setup_devices(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + v3_cfg_tree_t * device = v3_cfg_subtree(v3_cfg_subtree(cfg, "devices"), "device"); while (device) { - char * id = v3_cfg_val(device, "id"); + char * dev_class = v3_cfg_val(device, "class"); - V3_Print("configuring device %s\n", id); + V3_Print("configuring device %s\n", dev_class); - if (v3_create_device(info, id, device) == -1) { - PrintError("Error creating device %s\n", id); + if (v3_create_device(vm, dev_class, device) == -1) { + PrintError("Error creating device %s\n", dev_class); return -1; } device = v3_cfg_next_branch(device); } - - v3_print_dev_mgr(info); + v3_print_dev_mgr(vm); return 0; } +