diff options
| author | Junyan He <junyan.he@intel.com> | 2018-07-18 15:47:58 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2018-08-10 13:29:39 +0300 |
| commit | cbfc01710362f3de6fca3010a17b0e1c866fc181 (patch) | |
| tree | fc4e502451bbfebfc9439f9924f59e6cdb623255 /include/exec/ram_addr.h | |
| parent | b0e5de93811077254a536c23b713b49e12efb742 (diff) | |
memory, exec: switch file ram allocation functions to 'flags' parameters
As more flag parameters besides the existing 'share' are going to be
added to following functions
memory_region_init_ram_from_file
qemu_ram_alloc_from_fd
qemu_ram_alloc_from_file
let's switch them to use the 'flags' parameters so as to ease future
flag additions.
The existing 'share' flag is converted to the RAM_SHARED bit in ram_flags,
and other flag bits are ignored by above functions right now.
Signed-off-by: Junyan He <junyan.he@intel.com>
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/exec/ram_addr.h')
| -rw-r--r-- | include/exec/ram_addr.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index cf4ce06248..8a4a9bc614 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -71,12 +71,33 @@ static inline unsigned long int ramblock_recv_bitmap_offset(void *host_addr, } 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 + * 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, |