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vhost-blk: set features before setting inflight feature 

Virtqueue has split and packed, so before setting inflight,
you need to inform the back-end virtqueue format.

Signed-off-by: Jin Yu <jin.yu@intel.com>
Acked-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <20201103123617.28256-1-jin.yu@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jin Yu 2020-11-03 20:36:17 +08:00 committed by Michael S. Tsirkin
parent b7c1bd9d78
commit 1b0063b304
3 changed files with 27 additions and 0 deletions
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6
hw/block/vhost-user-blk.c
View File

@ -131,6 +131,12 @@ static int vhost_user_blk_start(VirtIODevice *vdev)
s->dev.acked_features = vdev->guest_features;
ret = vhost_dev_prepare_inflight(&s->dev, vdev);
if (ret < 0) {
error_report("Error set inflight format: %d", -ret);
goto err_guest_notifiers;
}
if (!s->inflight->addr) {
ret = vhost_dev_get_inflight(&s->dev, s->queue_size, s->inflight);
if (ret < 0) {

20
hw/virtio/vhost.c
View File

@ -1645,6 +1645,26 @@ int vhost_dev_load_inflight(struct vhost_inflight *inflight, QEMUFile *f)
return 0;
}
int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev)
{
int r;
if (hdev->vhost_ops->vhost_get_inflight_fd == NULL ||
hdev->vhost_ops->vhost_set_inflight_fd == NULL) {
return 0;
}
hdev->vdev = vdev;
r = vhost_dev_set_features(hdev, hdev->log_enabled);
if (r < 0) {
VHOST_OPS_DEBUG("vhost_dev_prepare_inflight failed");
return r;
}
return 0;
}
int vhost_dev_set_inflight(struct vhost_dev *dev,
struct vhost_inflight *inflight)
{

1
include/hw/virtio/vhost.h
View File

@ -141,6 +141,7 @@ void vhost_dev_reset_inflight(struct vhost_inflight *inflight);
void vhost_dev_free_inflight(struct vhost_inflight *inflight);
void vhost_dev_save_inflight(struct vhost_inflight *inflight, QEMUFile *f);
int vhost_dev_load_inflight(struct vhost_inflight *inflight, QEMUFile *f);
int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev);
int vhost_dev_set_inflight(struct vhost_dev *dev,
struct vhost_inflight *inflight);
int vhost_dev_get_inflight(struct vhost_dev *dev, uint16_t queue_size,