virtio_ccw_{save|load}_config are missing code to save and restore a vdev's
config_vector value. This causes some virtio devices to become disabled
following a migration.
This patch fixes a bug whereby the qmp/hmp balloon command (virsh setmem)
silently fails to update the guest's available memory because the device was not
properly migrated.
Signed-off-by: Jason J. Herne <jjhe...@linux.vnet.ibm.com>
---
hw/s390x/virtio-ccw.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index ef90fed..05eaee2 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1310,6 +1310,7 @@ static void virtio_ccw_save_config(DeviceState *d,
QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
SubchDev *s = dev->sch;
+ VirtIODevice *vdev = virtio_ccw_get_vdev(s);
subch_device_save(s, f);
if (dev->indicators != NULL) {
@@ -1333,6 +1334,7 @@ static void virtio_ccw_save_config(DeviceState *d,
QEMUFile *f)
qemu_put_be32(f, 0);
qemu_put_be64(f, 0UL);
}
+ qemu_put_be16(f, vdev->config_vector);
qemu_put_be64(f, dev->routes.adapter.ind_offset);
qemu_put_byte(f, dev->thinint_isc);
}
@@ -1341,6 +1343,7 @@ static int virtio_ccw_load_config(DeviceState *d,
QEMUFile *f)
{
VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d);
SubchDev *s = dev->sch;
+ VirtIODevice *vdev = virtio_ccw_get_vdev(s);
int len;
s->driver_data = dev;
@@ -1366,6 +1369,7 @@ static int virtio_ccw_load_config(DeviceState *d,
QEMUFile *f)
qemu_get_be64(f);
dev->summary_indicator = NULL;
}
+ qemu_get_be16s(f, &vdev->config_vector);
dev->routes.adapter.ind_offset = qemu_get_be64(f);
dev->thinint_isc = qemu_get_byte(f);
if (s->thinint_active) {
--
1.9.1
