[PATCH 2/2] virtio-scsi: Pack struct virtio_scsi_{req_cmd,resp_cmd}

Asias He
2013-03-15T01:45:16Z

Device needs the exact size of these data structure. Prevent padding.

This fixes guest hang when booting seabios + tcm_vhost.

Signed-off-by: Asias He <asias@redhat.com>
---
src/virtio-scsi.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/virtio-scsi.h b/src/virtio-scsi.h
index bbfbf30..96c3701 100644
--- a/src/virtio-scsi.h
+++ b/src/virtio-scsi.h
@@ -26,7 +26,7 @@ struct virtio_scsi_req_cmd {
u8 prio;
u8 crn;
char cdb[VIRTIO_SCSI_CDB_SIZE];
-};
+} __attribute__((packed));

/* This is the first element of the "in" scatter-gather list. */
struct virtio_scsi_resp_cmd {
@@ -36,7 +36,7 @@ struct virtio_scsi_resp_cmd {
u8 status;
u8 response;
u8 sense[VIRTIO_SCSI_SENSE_SIZE];
-};
+} __attribute__((packed));

#define VIRTIO_SCSI_S_OK 0

--
1.8.1.4