Re: [PATCH v2 04/15] virtio: defer config changed notifications

[Cornelia Huck]

On Mon, 6 Oct 2014 18:10:55 +0300
"Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote:

> Defer config changed notifications that arrive during
> probe/scan/freeze/restore.
> 
> This will allow drivers to set DRIVER_OK earlier, without worrying about
> racing with config change interrupts.
> 
> This change will also benefit old hypervisors (before 2009)
> that send interrupts without checking DRIVER_OK: previously,
> the callback could race with driver-specific initialization.
> 
> This will also help simplify drivers.
> 
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> ---
>  include/linux/virtio.h  |  6 ++++++
>  drivers/virtio/virtio.c | 57 +++++++++++++++++++++++++++++++++++++++++--------
>  2 files changed, 54 insertions(+), 9 deletions(-)

Reviewed-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>

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