diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 40 |
1 files changed, 22 insertions, 18 deletions
@@ -1207,6 +1207,7 @@ static void *file_ram_alloc(RAMBlock *block, const char *path, Error **errp) { + struct stat st; char *filename; char *sanitized_name; char *c; @@ -1235,26 +1236,33 @@ static void *file_ram_alloc(RAMBlock *block, goto error; } - /* Make name safe to use with mkstemp by replacing '/' with '_'. */ - sanitized_name = g_strdup(memory_region_name(block->mr)); - for (c = sanitized_name; *c != '\0'; c++) { - if (*c == '/') - *c = '_'; - } + if (!stat(path, &st) && S_ISDIR(st.st_mode)) { + /* Make name safe to use with mkstemp by replacing '/' with '_'. */ + sanitized_name = g_strdup(memory_region_name(block->mr)); + for (c = sanitized_name; *c != '\0'; c++) { + if (*c == '/') { + *c = '_'; + } + } - filename = g_strdup_printf("%s/qemu_back_mem.%s.XXXXXX", path, - sanitized_name); - g_free(sanitized_name); + filename = g_strdup_printf("%s/qemu_back_mem.%s.XXXXXX", path, + sanitized_name); + g_free(sanitized_name); + + fd = mkstemp(filename); + if (fd >= 0) { + unlink(filename); + } + g_free(filename); + } else { + fd = open(path, O_RDWR | O_CREAT, 0644); + } - fd = mkstemp(filename); if (fd < 0) { error_setg_errno(errp, errno, "unable to create backing store for hugepages"); - g_free(filename); goto error; } - unlink(filename); - g_free(filename); memory = ROUND_UP(memory, hpagesize); @@ -1284,10 +1292,6 @@ static void *file_ram_alloc(RAMBlock *block, return area; error: - if (mem_prealloc) { - error_report("%s", error_get_pretty(*errp)); - exit(1); - } return NULL; } #endif @@ -2700,8 +2704,8 @@ void cpu_register_map_client(QEMUBH *bh) void cpu_exec_init_all(void) { qemu_mutex_init(&ram_list.mutex); - memory_map_init(); io_mem_init(); + memory_map_init(); qemu_mutex_init(&map_client_list_lock); } |