Re: [PATCH V6 6/9] virtio-ccw: implement synchronize_cbs()

[Cornelia Huck <cohuck@redhat.com>]

On Fri, May 27 2022, Jason Wang <jasowang@redhat.com> wrote:

> This patch tries to implement the synchronize_cbs() for ccw. For the
> vring_interrupt() that is called via virtio_airq_handler(), the
> synchronization is simply done via the airq_info's lock. For the
> vring_interrupt() that is called via virtio_ccw_int_handler(), a per
> device rwlock is introduced and used in the synchronization method.
>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: "Paul E. McKenney" <paulmck@kernel.org>
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Halil Pasic <pasic@linux.ibm.com>
> Cc: Cornelia Huck <cohuck@redhat.com>
> Cc: Vineeth Vijayan <vneethv@linux.ibm.com>
> Cc: Peter Oberparleiter <oberpar@linux.ibm.com>
> Cc: linux-s390@vger.kernel.org
> Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
>  drivers/s390/virtio/virtio_ccw.c | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>