diff options
| -rw-r--r-- | memory_mapping.c | 47 | ||||
| -rw-r--r-- | memory_mapping.h | 15 |
2 files changed, 62 insertions, 0 deletions
diff --git a/memory_mapping.c b/memory_mapping.c index 718f271849..627397a0d5 100644 --- a/memory_mapping.c +++ b/memory_mapping.c @@ -164,3 +164,50 @@ void memory_mapping_list_init(MemoryMappingList *list) list->last_mapping = NULL; QTAILQ_INIT(&list->head); } + +#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING) + +static CPUArchState *find_paging_enabled_cpu(CPUArchState *start_cpu) +{ + CPUArchState *env; + + for (env = start_cpu; env != NULL; env = env->next_cpu) { + if (cpu_paging_enabled(env)) { + return env; + } + } + + return NULL; +} + +int qemu_get_guest_memory_mapping(MemoryMappingList *list) +{ + CPUArchState *env, *first_paging_enabled_cpu; + RAMBlock *block; + ram_addr_t offset, length; + int ret; + + first_paging_enabled_cpu = find_paging_enabled_cpu(first_cpu); + if (first_paging_enabled_cpu) { + for (env = first_paging_enabled_cpu; env != NULL; env = env->next_cpu) { + ret = cpu_get_memory_mapping(list, env); + if (ret < 0) { + return -1; + } + } + return 0; + } + + /* + * If the guest doesn't use paging, the virtual address is equal to physical + * address. + */ + QLIST_FOREACH(block, &ram_list.blocks, next) { + offset = block->offset; + length = block->length; + create_new_memory_mapping(list, offset, offset, length); + } + + return 0; +} +#endif diff --git a/memory_mapping.h b/memory_mapping.h index e486d1056e..7f3c256548 100644 --- a/memory_mapping.h +++ b/memory_mapping.h @@ -45,6 +45,21 @@ void memory_mapping_list_free(MemoryMappingList *list); void memory_mapping_list_init(MemoryMappingList *list); +/* + * Return value: + * 0: success + * -1: failed + * -2: unsupported + */ +#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING) +int qemu_get_guest_memory_mapping(MemoryMappingList *list); +#else +static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list) +{ + return -2; +} +#endif + #else /* We use MemoryMappingList* in cpu-all.h */ |