On Tue, 27 Oct 2020 13:55:22 +0000 David Woodhouse <[email protected]> wrote:
> From: David Woodhouse <[email protected]> > > Don't allow the events to accumulate in the eventfd counter, drain them > as they are handled. > > Signed-off-by: David Woodhouse <[email protected]> > --- Acked-by: Alex Williamson <[email protected]> Paolo, I assume you'll add this to your queue. Thanks, Alex > drivers/vfio/virqfd.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/vfio/virqfd.c b/drivers/vfio/virqfd.c > index 997cb5d0a657..414e98d82b02 100644 > --- a/drivers/vfio/virqfd.c > +++ b/drivers/vfio/virqfd.c > @@ -46,6 +46,9 @@ static int virqfd_wakeup(wait_queue_entry_t *wait, unsigned > mode, int sync, void > __poll_t flags = key_to_poll(key); > > if (flags & EPOLLIN) { > + u64 cnt; > + eventfd_ctx_do_read(virqfd->eventfd, &cnt); > + > /* An event has been signaled, call function */ > if ((!virqfd->handler || > virqfd->handler(virqfd->opaque, virqfd->data)) &&
