diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/block/block.h | 3 | ||||
| -rw-r--r-- | include/block/block_int.h | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h index 00a8790660..332ebb94fb 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -428,6 +428,9 @@ void bdrv_img_create(const char *filename, const char *fmt, char *options, uint64_t img_size, int flags, Error **errp, bool quiet); +/* Returns the alignment in bytes that is required so that no bounce buffer + * is required throughout the stack */ +size_t bdrv_opt_mem_align(BlockDriverState *bs); void bdrv_set_buffer_alignment(BlockDriverState *bs, int align); void *qemu_blockalign(BlockDriverState *bs, size_t size); bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov); diff --git a/include/block/block_int.h b/include/block/block_int.h index f6fa1f6f36..74a78a6831 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -258,6 +258,9 @@ typedef struct BlockLimits { /* optimal transfer length in sectors */ int opt_transfer_length; + + /* memory alignment so that no bounce buffer is needed */ + size_t opt_mem_alignment; } BlockLimits; /* |