On Fri, May 27, 2022 at 02:01:14PM +0800, Jason Wang wrote:
This patch introduces new virtio config op to vring callbacks. Transport specific method is required to make sure the write before this function is visible to the vring_interrupt() that is called after the return of this function. For the transport that doesn't provide synchronize_vqs(), use synchornize_rcu() which synchronize with IRQ implicitly as a fallback. Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx> Cc: Marc Zyngier <maz@xxxxxxxxxx> Cc: Halil Pasic <pasic@xxxxxxxxxxxxx> Cc: Cornelia Huck <cohuck@xxxxxxxxxx> Cc: Vineeth Vijayan <vneethv@xxxxxxxxxxxxx> Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx> Cc: linux-s390@xxxxxxxxxxxxxxx Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> --- include/linux/virtio_config.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
