X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_config.c;h=f02ab252e2240b9bbfe4db8b53eb15d80a1cbb1b;hb=7ca1f3f6bcb065c7c28b98f049d4abbca21a7bc1;hp=11814a6af76e2bc293d9d10a520e49cf2cc7e421;hpb=d67c78032a64cc297e791caf2f678bc20aa13a3b;p=palacios.git diff --git a/palacios/src/palacios/vmm_config.c b/palacios/src/palacios/vmm_config.c index 11814a6..f02ab25 100644 --- a/palacios/src/palacios/vmm_config.c +++ b/palacios/src/palacios/vmm_config.c @@ -30,34 +30,60 @@ #include #include #include -#include - +#include #include -#include #include "vmm_config_class.h" + +/* The Palacios cookie encodes "v3vee" followed by a + 3 byte version code. There are currently two versions: + + \0\0\0 => original (no checksum) + \0\0\1 => checksum +*/ +#define COOKIE_LEN 8 +#define COOKIE_V0 "v3vee\0\0\0" +#define COOKIE_V1 "v3vee\0\0\1" + + + + // This is used to access the configuration file index table -struct file_hdr { +struct file_hdr_v0 { uint32_t index; uint32_t size; uint64_t offset; }; -struct file_idx_table { +struct file_hdr_v1 { + uint32_t index; + uint32_t size; + uint64_t offset; + ulong_t hash; +}; + + +struct file_idx_table_v0 { uint64_t num_files; - struct file_hdr hdrs[0]; + struct file_hdr_v0 hdrs[0]; +}; + +struct file_idx_table_v1 { + uint64_t num_files; + struct file_hdr_v1 hdrs[0]; }; 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); @@ -72,9 +98,16 @@ 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) { @@ -112,24 +145,44 @@ static struct v3_config * parse_config(void * cfg_blob) { struct v3_config * cfg = NULL; int offset = 0; uint_t xml_len = 0; - struct file_idx_table * files = NULL; + struct file_idx_table_v0 * files_v0 = NULL; + struct file_idx_table_v1 * files_v1 = NULL; v3_cfg_tree_t * file_tree = NULL; + int version=-1; V3_Print("cfg data at %p\n", cfg_blob); - if (memcmp(cfg_blob, "v3vee\0\0\0", 8) != 0) { - PrintError("Invalid Configuration Header\n"); + if (memcmp(cfg_blob, COOKIE_V0, COOKIE_LEN) == 0) { + version = 0; + } else if (memcmp(cfg_blob, COOKIE_V1, COOKIE_LEN) == 0) { + version = 1; + } else { + PrintError("Invalid Configuration Header Or Unknown Version\n"); return NULL; - } + } - offset += 8; + V3_Print("Handling Palacios Image Format, Version 0x%x\n",version); + + offset += COOKIE_LEN; cfg = (struct v3_config *)V3_Malloc(sizeof(struct v3_config)); + + if (!cfg) { + PrintError("Unable to allocate while parsing\n"); + return NULL; + } + memset(cfg, 0, sizeof(struct v3_config)); cfg->blob = cfg_blob; INIT_LIST_HEAD(&(cfg->file_list)); cfg->file_table = v3_create_htable(0, file_hash_fn, file_eq_fn); + + if (!(cfg->file_table)) { + PrintError("Unable to allocate hash table while parsing\n"); + V3_Free(cfg); + return NULL; + } xml_len = *(uint32_t *)(cfg_blob + offset); offset += 4; @@ -139,9 +192,15 @@ static struct v3_config * parse_config(void * cfg_blob) { offset += 8; - files = (struct file_idx_table *)(cfg_blob + offset); + // This is hideous, but the file formats are still very close + if (version==0) { + files_v0 = (struct file_idx_table_v0 *)(cfg_blob + offset); + V3_Print("Number of files in cfg: %d\n", (uint32_t)(files_v0->num_files)); + } else { + files_v1 = (struct file_idx_table_v1 *)(cfg_blob + offset); + V3_Print("Number of files in cfg: %d\n", (uint32_t)(files_v1->num_files)); + } - V3_Print("Number of files in cfg: %d\n", (uint32_t)(files->num_files)); file_tree = v3_cfg_subtree(v3_cfg_subtree(cfg->cfg, "files"), "file"); @@ -149,25 +208,52 @@ static struct v3_config * parse_config(void * cfg_blob) { char * id = v3_cfg_val(file_tree, "id"); char * index = v3_cfg_val(file_tree, "index"); int idx = atoi(index); - struct file_hdr * hdr = &(files->hdrs[idx]); struct v3_cfg_file * file = NULL; file = (struct v3_cfg_file *)V3_Malloc(sizeof(struct v3_cfg_file)); if (!file) { PrintError("Could not allocate file structure\n"); + v3_free_htable(cfg->file_table,0,0); + V3_Free(cfg); return NULL; } - V3_Print("File index=%d id=%s\n", idx, id); - strncpy(file->tag, id, 256); - file->size = hdr->size; - file->data = cfg_blob + hdr->offset; - - V3_Print("Storing file data offset = %d, size=%d\n", (uint32_t)hdr->offset, hdr->size); - V3_Print("file data at %p\n", file->data); + strncpy(file->tag, id, V3_MAX_TAG_LEN); + + if (version==0) { + struct file_hdr_v0 * hdr = &(files_v0->hdrs[idx]); + + file->size = hdr->size; + file->data = cfg_blob + hdr->offset; + file->hash = 0; + + V3_Print("Storing file data offset = %d, size=%d\n", (uint32_t)hdr->offset, hdr->size); + V3_Print("file data at %p\n", file->data); + + } else if (version==1) { + struct file_hdr_v1 * hdr = &(files_v1->hdrs[idx]); + unsigned long hash; + + file->size = hdr->size; + file->data = cfg_blob + hdr->offset; + file->hash = hdr->hash; + + V3_Print("Storing file data offset = %d, size=%d\n", (uint32_t)hdr->offset, hdr->size); + V3_Print("file data at %p\n", file->data); + V3_Print("Checking file data integrity...\n"); + if ((hash = v3_hash_buffer(file->data, file->size)) != file->hash) { + PrintError("File data corrupted! (orig hash=0x%lx, new=0x%lx\n", + file->hash, hash); + return NULL; + } + V3_Print("File data OK\n"); + + } + + list_add( &(file->file_node), &(cfg->file_list)); V3_Print("Keying file to name\n"); @@ -183,24 +269,57 @@ static struct v3_config * parse_config(void * cfg_blob) { return cfg; } -static int pre_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * vm_cfg) { + +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 V3_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 - vm->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) { vm->vm_class = V3_PC_VM; } else { @@ -208,8 +327,7 @@ static int pre_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * vm_cfg) { return -1; } - -#ifdef CONFIG_TELEMETRY +#ifdef V3_CONFIG_TELEMETRY { char * telemetry = v3_cfg_val(vm_cfg, "telemetry"); @@ -241,53 +359,60 @@ static int pre_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * vm_cfg) { 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_type = v3_cfg_val(pg_tree, "type"); - char *pg_mode = v3_cfg_val(pg_tree, "mode"); - - PrintDebug("Paging mode specified as %s(%s)\n", pg_type, pg_mode); +static int determine_paging_mode(struct guest_info * info, v3_cfg_tree_t * core_cfg) { + extern v3_cpu_arch_t v3_mach_type; - if (pg_type) { - if ((strcasecmp(pg_type, "nested") == 0)) { - if (v3_cpu_types[info->cpu_id] == V3_SVM_REV3_CPU) { + 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"); + + 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_mach_type == V3_SVM_REV3_CPU) || + (v3_mach_type == V3_VMX_EPT_CPU) || + (v3_mach_type == V3_VMX_EPT_UG_CPU)) { + + V3_Print("Setting paging mode to NESTED\n"); 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_type, "shadow") == 0)) { + } else if ((strcasecmp(pg_mode, "shadow") == 0)) { + V3_Print("Setting paging mode to SHADOW\n"); info->shdw_pg_mode = SHADOW_PAGING; } else { - PrintError("Invalid paging type (%s) specified in configuration. Defaulting to shadow paging\n", pg_type); + 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.\n"); + V3_Print("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 Page Mode: NESTED_PAGING\n"); - } else if (info->shdw_pg_mode == SHADOW_PAGING) { - PrintDebug("Guest Page 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)) + if (determine_paging_mode(info, core_cfg) != 0) { return -1; + } - v3_init_core(info); + if (v3_init_core(info) == -1) { + PrintError("Error Initializing Core\n"); + return -1; + } if (info->vm_info->vm_class == V3_PC_VM) { if (pre_config_pc_core(info, core_cfg) == -1) { @@ -306,24 +431,13 @@ static int pre_config_core(struct guest_info * info, v3_cfg_tree_t * core_cfg) { 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(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(vm, cfg) == -1) { - PrintError("Failed to setup devices\n"); - return -1; - } - - - // v3_print_io_map(info); - v3_print_msr_map(vm); if (vm->vm_class == V3_PC_VM) { @@ -336,11 +450,33 @@ static int post_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { return -1; } - if (v3_inject_mptable(vm)==-1) { - PrintError("Failed to inject mptable during configuration\n"); + + /* + * 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(vm); + + + + + /* + * Initialize configured extensions + */ + if (setup_extensions(vm, cfg) == -1) { + PrintError("Failed to setup extensions\n"); return -1; } + + vm->run_state = VM_STOPPED; + return 0; } @@ -348,8 +484,12 @@ static int post_config_vm(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { static int post_config_core(struct guest_info * info, v3_cfg_tree_t * cfg) { - + if (v3_init_core_extensions(info) == -1) { + PrintError("Error intializing extension core states\n"); + return -1; + } + if (info->vm_info->vm_class == V3_PC_VM) { if (post_config_pc_core(info, cfg) == -1) { PrintError("PC Post configuration failure\n"); @@ -370,17 +510,30 @@ 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); + if (!vm) { + PrintError("Unable to allocate space for guest data structures\n"); + return NULL; + } + + int i = 0; + memset(vm, 0, guest_state_size); vm->num_cores = num_cores; + for (i = 0; i < num_cores; i++) { + vm->cores[i].core_run_state = CORE_INVALID; + } + + vm->run_state = VM_INVALID; + return vm; } -struct v3_vm_info * v3_config_guest(void * cfg_blob) { - v3_cpu_arch_t cpu_type = v3_get_cpu_type(v3_get_cpu_id()); +struct v3_vm_info * v3_config_guest(void * cfg_blob, void * priv_data) { + extern v3_cpu_arch_t v3_mach_type; struct v3_config * cfg_data = NULL; struct v3_vm_info * vm = NULL; int num_cores = 0; @@ -388,7 +541,7 @@ struct v3_vm_info * v3_config_guest(void * cfg_blob) { v3_cfg_tree_t * cores_cfg = NULL; v3_cfg_tree_t * per_core_cfg = NULL; - if (cpu_type == V3_INVALID_CPU) { + if (v3_mach_type == V3_INVALID_CPU) { PrintError("Configuring guest on invalid CPU\n"); return NULL; } @@ -408,7 +561,6 @@ struct v3_vm_info * v3_config_guest(void * cfg_blob) { } num_cores = atoi(v3_cfg_val(cores_cfg, "count")); - if (num_cores == 0) { PrintError("No cores specified in configuration\n"); return NULL; @@ -423,6 +575,8 @@ struct v3_vm_info * v3_config_guest(void * cfg_blob) { return NULL; } + vm->host_priv_data = priv_data; + vm->cfg_data = cfg_data; V3_Print("Preconfiguration\n"); @@ -432,7 +586,6 @@ struct v3_vm_info * v3_config_guest(void * cfg_blob) { return NULL; } - V3_Print("Per core configuration\n"); per_core_cfg = v3_cfg_subtree(cores_cfg, "core"); @@ -440,14 +593,16 @@ struct v3_vm_info * v3_config_guest(void * cfg_blob) { for (i = 0; i < vm->num_cores; i++) { struct guest_info * info = &(vm->cores[i]); - info->cpu_id = i; + info->vcpu_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; } + per_core_cfg = v3_cfg_next_branch(per_core_cfg); } @@ -478,6 +633,17 @@ struct v3_vm_info * v3_config_guest(void * cfg_blob) { +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 v3_vm_info * vm, v3_cfg_tree_t * cfg) { @@ -502,6 +668,29 @@ 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) { + v3_cfg_tree_t * extension = v3_cfg_subtree(v3_cfg_subtree(cfg, "extensions"), "extension"); + + while (extension) { + char * ext_name = v3_cfg_val(extension, "name"); + + if (!ext_name) { + PrintError("Extension has no name\n"); + return -1; + } + + 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 v3_vm_info * vm, v3_cfg_tree_t * cfg) { @@ -509,12 +698,12 @@ static int setup_devices(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { 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(vm, 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; } @@ -528,4 +717,3 @@ static int setup_devices(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { -