diff options
Diffstat (limited to 'include/block/block.h')
| -rw-r--r-- | include/block/block.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/block/block.h b/include/block/block.h index 9b12774ddf..2025d7ed19 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -631,5 +631,14 @@ void bdrv_del_child(BlockDriverState *parent, BdrvChild *child, Error **errp); bool bdrv_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, uint32_t granularity, Error **errp); - +/** + * + * bdrv_register_buf/bdrv_unregister_buf: + * + * Register/unregister a buffer for I/O. For example, VFIO drivers are + * interested to know the memory areas that would later be used for I/O, so + * that they can prepare IOMMU mapping etc., to get better performance. + */ +void bdrv_register_buf(BlockDriverState *bs, void *host, size_t size); +void bdrv_unregister_buf(BlockDriverState *bs, void *host); #endif |