diff options
| -rw-r--r-- | exec.c | 45 | ||||
| -rw-r--r-- | include/exec/ram_addr.h | 3 |
2 files changed, 33 insertions, 15 deletions
@@ -1914,14 +1914,12 @@ static void ram_block_add(RAMBlock *new_block, Error **errp) } #ifdef __linux__ -RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, - bool share, const char *mem_path, - Error **errp) +RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr, + bool share, int fd, + Error **errp) { RAMBlock *new_block; Error *local_err = NULL; - int fd; - bool created; int64_t file_size; if (xen_enabled()) { @@ -1946,18 +1944,12 @@ RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, return NULL; } - fd = file_ram_open(mem_path, memory_region_name(mr), &created, errp); - if (fd < 0) { - return NULL; - } - size = HOST_PAGE_ALIGN(size); file_size = get_file_size(fd); if (file_size > 0 && file_size < size) { error_setg(errp, "backing store %s size 0x%" PRIx64 " does not match 'size' option 0x" RAM_ADDR_FMT, mem_path, file_size, size); - close(fd); return NULL; } @@ -1968,10 +1960,6 @@ RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, new_block->flags = share ? RAM_SHARED : 0; new_block->host = file_ram_alloc(new_block, size, fd, !file_size, errp); if (!new_block->host) { - if (created) { - unlink(mem_path); - } - close(fd); g_free(new_block); return NULL; } @@ -1983,6 +1971,33 @@ RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, return NULL; } return new_block; + +} + + +RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, + bool share, const char *mem_path, + Error **errp) +{ + int fd; + bool created; + RAMBlock *block; + + fd = file_ram_open(mem_path, memory_region_name(mr), &created, errp); + if (fd < 0) { + return NULL; + } + + block = qemu_ram_alloc_from_fd(size, mr, share, fd, errp); + if (!block) { + if (created) { + unlink(mem_path); + } + close(fd); + return NULL; + } + + return block; } #endif diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index 140efa840c..73d1bea8b6 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -65,6 +65,9 @@ unsigned long last_ram_page(void); RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, bool share, const char *mem_path, Error **errp); +RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr, + bool share, int fd, + Error **errp); RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, MemoryRegion *mr, Error **errp); RAMBlock *qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr, Error **errp); |