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[Qemu-devel] [PATCH] virtio-scsi: scsi events must be converted to targe
From: |
Greg Kurz |
Subject: |
[Qemu-devel] [PATCH] virtio-scsi: scsi events must be converted to target endianness |
Date: |
Mon, 30 Jun 2014 17:17:17 +0200 |
User-agent: |
StGit/0.17-dirty |
From: Cédric Le Goater <address@hidden>
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 <address@hidden>
[ Ported from PowerKVM,
Greg Kurz <address@hidden> ]
Signed-off-by: Greg Kurz <address@hidden>
---
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 0b0a331..5568479 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -591,8 +591,8 @@ 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 {
- [Qemu-devel] [PATCH] virtio-scsi: scsi events must be converted to target endianness,
Greg Kurz <=