diff options
Diffstat (limited to 'include/exec/ram_addr.h')
| -rw-r--r-- | include/exec/ram_addr.h | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index cf4ce06248..3abb639056 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -70,13 +70,37 @@ static inline unsigned long int ramblock_recv_bitmap_offset(void *host_addr, return host_addr_offset >> TARGET_PAGE_BITS; } +bool ramblock_is_pmem(RAMBlock *rb); + long qemu_getrampagesize(void); + +/** + * qemu_ram_alloc_from_file, + * qemu_ram_alloc_from_fd: Allocate a ram block from the specified backing + * file or device + * + * Parameters: + * @size: the size in bytes of the ram block + * @mr: the memory region where the ram block is + * @ram_flags: specify the properties of the ram block, which can be one + * or bit-or of following values + * - RAM_SHARED: mmap the backing file or device with MAP_SHARED + * - RAM_PMEM: the backend @mem_path or @fd is persistent memory + * Other bits are ignored. + * @mem_path or @fd: specify the backing file or device + * @errp: pointer to Error*, to store an error if it happens + * + * Return: + * On success, return a pointer to the ram block. + * On failure, return NULL. + */ RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr, - bool share, const char *mem_path, + uint32_t ram_flags, const char *mem_path, Error **errp); RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr, - bool share, int fd, + uint32_t ram_flags, 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, bool share, MemoryRegion *mr, |