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| author | Michael S. Tsirkin <mst@redhat.com> | 2011-08-11 10:21:18 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2011-08-26 11:25:25 +0300 |
| commit | b0b3db79559e57db340b292621c397e7a6cdbdc5 (patch) | |
| tree | 25519d7db0fa1fe99469b2e10d2423dd69ad6de2 /hw/vhost.h | |
| parent | c9abe111209abca1b910e35c6ca9888aced5f183 (diff) | |
| download | qemu-b0b3db79559e57db340b292621c397e7a6cdbdc5.zip qemu-b0b3db79559e57db340b292621c397e7a6cdbdc5.tar.gz qemu-b0b3db79559e57db340b292621c397e7a6cdbdc5.tar.bz2 | |
vhost-net: cleanup host notifiers at last step
When the vhost notifier is disabled, the userspace handler runs
immediately: virtio_pci_set_host_notifier_internal might
call virtio_queue_notify_vq.
Since the VQ state and the tap backend state aren't
recovered yet, this causes
"Guest moved used index from XXX to YYY" assertions.
The solution is to split out host notifier handling
from vhost VQ setup and disable notifiers as our last step
when we stop vhost-net. For symmetry enable them first thing
on start.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/vhost.h')
| -rw-r--r-- | hw/vhost.h | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -46,5 +46,7 @@ void vhost_dev_cleanup(struct vhost_dev *hdev); bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev); int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev); void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev); +int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); +void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); #endif |