Accesses to vring_avail_event and vring_used_event must honor the queue
endianness.
This patch allows cross-endian setups to use dataplane (tested with ppc64
on ppc64le, and vice-versa).
Suggested-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
return true;
}
- return vring_need_event(vring_used_event(&vring->vr), new, old);
+ return vring_need_event(virtio_tswap16(vdev, vring_used_event(&vring->vr)),
+ new, old);
}
/* On success, increment avail index. */
vring->last_avail_idx++;
if (virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) {
- vring_avail_event(&vring->vr) = vring->last_avail_idx;
+ vring_avail_event(&vring->vr) =
+ virtio_tswap16(vdev, vring->last_avail_idx);
}
return head;