From: Cédric Le Goater <c...@fr.ibm.com> Virtio SCSI Events need to be byteswapped before being pushed when host and guest have a different endianness. Not doing so breaks hotplug of virtio scsi disks, with the following error message being printed in the guest console:
virtio_scsi: Unsupport virtio scsi event 1000000 This issue got uncovered while testing disk hotplug with a PowerKVM ppc64le guest. I have checked that this issue also affects a x86_64 guest run on a ppc64 host. Signed-off-by: Cédric Le Goater <c...@fr.ibm.com> [ Ported from PowerKVM, Greg Kurz <gk...@linux.vnet.ibm.com> ] Signed-off-by: Greg Kurz <gk...@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- hw/scsi/virtio-scsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 3fecdca..0eb069a 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -587,8 +587,8 @@ static void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev, evt = &req->resp.event; memset(evt, 0, sizeof(VirtIOSCSIEvent)); - evt->event = event; - evt->reason = reason; + evt->event = virtio_tswap32(vdev, event); + evt->reason = virtio_tswap32(vdev, reason); if (!dev) { assert(event == VIRTIO_SCSI_T_EVENTS_MISSED); } else { -- 1.8.3.1