[Qemu-block] [PATCH v2 2/2] xen-block: always report 'sectors' in terms of 512-byte units

[Paul Durrant]

The mail thread at [1] clarifies that the Xen blkif protocol requires that
'sectors' value reported in xenstore is strictly in terms of 512-byte
units and is not dependent on the logical sector size reported in
'sector-size'.

[1] https://lists.xenproject.org/archives/html/xen-devel/2019-03/msg01600.html

Signed-off-by: Paul Durrant <address@hidden>
---
Cc: Stefano Stabellini <address@hidden>
Cc: Anthony Perard <address@hidden>
Cc: Kevin Wolf <address@hidden>
Cc: Max Reitz <address@hidden>
---
 hw/block/xen-block.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index a848849f48..57e9da7e1c 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -149,7 +149,7 @@ static void xen_block_set_size(XenBlockDevice *blockdev)
     const char *type = object_get_typename(OBJECT(blockdev));
     XenBlockVdev *vdev = &blockdev->props.vdev;
     BlockConf *conf = &blockdev->props.conf;
-    int64_t sectors = blk_getlength(conf->blk) / conf->logical_block_size;
+    int64_t sectors = blk_getlength(conf->blk) / XEN_BLKIF_SECTOR_SIZE;
     XenDevice *xendev = XEN_DEVICE(blockdev);
 
     trace_xen_block_size(type, vdev->disk, vdev->partition, sectors);
-- 
2.20.1.2.gb21ebb6