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(parent: cd67904) | 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)
commit6d62c37f1991aafc872f8d8be8ac60e57ede8605
tree346383120729b4e6a49271289d617e0c8f487d48tree | snapshot
parentcd679048958011418f14a8fc7dfdb64ab72ca315commit | 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
Domain: System / Kernel;