On Thu, Oct 26, 2017 at 10:36:47AM +0200, Cornelia Huck wrote: > On Thu, 26 Oct 2017 04:48:01 +0300 > "Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote: > > > last kicked event index must be updated unconditionally: > > even if we don't need to kick, we do not want to re-check > > the same entry for events. > > > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > > --- > > tools/virtio/ringtest/ring.c | 24 +++++++++++++++--------- > > 1 file changed, 15 insertions(+), 9 deletions(-) > > Acked-by: Cornelia Huck <cohuck@xxxxxxxxxx> Actually it seems to sometimes trigger stalls when host and guest are on the same physical core. To trigger: ./ring --sleep --host-affinity 0 --guest-affinity 0 This worries me since it's similar to what vhost does. Still debugging - anyone see anything suspicious? > I think virtio_ring_0_9 has the same issue? I think it does, posted a patch. -- MST _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
