diff options
| author | Greg Kurz <gkurz@linux.vnet.ibm.com> | 2014-06-24 19:15:31 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-06-29 19:39:41 +0300 |
| commit | 1b5fc0dea469976fcbf6dc2e8f2637a2154af2fb (patch) | |
| tree | 481aa37972c3f7a3da16166688c5cb9d457e6478 /hw/virtio | |
| parent | e38e943a1fa20d04deb1899be19b12aadec7a585 (diff) | |
virtio: introduce device specific migration calls
In order to migrate virtio subsections, they should be streamed after
the device itself. We need the device specific code to be called from
the common migration code to achieve this. This patch introduces load
and save methods for this purpose.
Suggested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio')
| -rw-r--r-- | hw/virtio/virtio-balloon.c | 2 | ||||
| -rw-r--r-- | hw/virtio/virtio-rng.c | 2 | ||||
| -rw-r--r-- | hw/virtio/virtio.c | 13 |
3 files changed, 14 insertions, 3 deletions
diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index 2a2e58a297..165592e1d7 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -343,7 +343,7 @@ static int virtio_balloon_load(QEMUFile *f, void *opaque, int version_id) if (version_id != 1) return -EINVAL; - ret = virtio_load(vdev, f); + ret = virtio_load(vdev, f, version_id); if (ret) { return ret; } diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c index b6ab3610cb..025de81345 100644 --- a/hw/virtio/virtio-rng.c +++ b/hw/virtio/virtio-rng.c @@ -113,7 +113,7 @@ static int virtio_rng_load(QEMUFile *f, void *opaque, int version_id) if (version_id != 1) { return -EINVAL; } - virtio_load(vdev, f); + virtio_load(vdev, f, version_id); /* We may have an element ready but couldn't process it due to a quota * limit. Make sure to try again after live migration when the quota may diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index c1d538c5f3..7f9ac5e0b9 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -843,6 +843,7 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f) { BusState *qbus = qdev_get_parent_bus(DEVICE(vdev)); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev); int i; if (k->save_config) { @@ -877,6 +878,10 @@ void virtio_save(VirtIODevice *vdev, QEMUFile *f) k->save_queue(qbus->parent, i, f); } } + + if (vdc->save != NULL) { + vdc->save(vdev, f); + } } int virtio_set_features(VirtIODevice *vdev, uint32_t val) @@ -895,7 +900,7 @@ int virtio_set_features(VirtIODevice *vdev, uint32_t val) return bad ? -1 : 0; } -int virtio_load(VirtIODevice *vdev, QEMUFile *f) +int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id) { int i, ret; int32_t config_len; @@ -904,6 +909,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f) uint32_t supported_features; BusState *qbus = qdev_get_parent_bus(DEVICE(vdev)); VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev); if (k->load_config) { ret = k->load_config(qbus->parent, f); @@ -983,6 +989,11 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f) } virtio_notify_vector(vdev, VIRTIO_NO_VECTOR); + + if (vdc->load != NULL) { + return vdc->load(vdev, f, version_id); + } + return 0; } |