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(parent: 36ceaf0) | patch
virtio_blk: enable VQs early on restore
authorMichael S. Tsirkin <mst@redhat.com>
Tue, 14 Oct 2014 23:52:32 +0000 (10:22 +1030)
committerRusty Russell <rusty@rustcorp.com.au>
Tue, 14 Oct 2014 23:55:07 +0000 (10:25 +1030)
commit2f0d390cd5f6983ac6284886fdbacfeff99acfff
tree346383120729b4e6a49271289d617e0c8f487d48tree | snapshot
parent36ceaf031a99b608920caa1288407e73a9db8dc7commit | diff
virtio_blk: enable VQs early on restore

virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after restore returns, virtio block violated
this rule on restore by restarting queues, which might in theory
cause the VQ to be used directly within restore.

To fix, call virtio_device_ready before using starting queues.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
drivers/block/virtio_blk.c diff | blob | history
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