diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-29 17:02:13 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-29 17:02:13 +0000 |
| commit | 7625162ca4e7be6359571d98b1c9e983393e9d91 (patch) | |
| tree | 0a9f8faf05b8663d2340ed38058216aae18a5b67 | |
| parent | 22bf14582af9e25e31b926fab23c9be2d4a0298f (diff) | |
Don't notify virtio devices before S_DRIVER_OK (Mark McLoughlin)
Current Linux guests oops if the host notifies of a
config change before a driver has been bound to the
device.
It's pretty pointless for us to do notify of config
changes before status is S_DRIVER_OK anyway, so let's
just not do it.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6471 c046a42c-6fe2-441c-8c8c-71466251a162
| -rw-r--r-- | hw/virtio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/virtio.c b/hw/virtio.c index 2e3984e6ed..bb941eda75 100644 --- a/hw/virtio.c +++ b/hw/virtio.c @@ -738,6 +738,9 @@ void virtio_notify(VirtIODevice *vdev, VirtQueue *vq) void virtio_notify_config(VirtIODevice *vdev) { + if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) + return; + vdev->isr |= 0x03; virtio_update_irq(vdev); } |