From: "Michael S. Tsirkin" <mst@xxxxxxxxxx> Date: Sun, 10 Jun 2012 13:25:12 +0300 > On Wed, Jun 06, 2012 at 10:35:24AM +0200, Eric Dumazet wrote: >> From: Eric Dumazet <edumazet@xxxxxxxxxx> >> >> commit 3fa2a1df909 (virtio-net: per cpu 64 bit stats (v2)) added a race >> on 32bit arches. >> >> We must use separate syncp for rx and tx path as they can be run at the >> same time on different cpus. Thus one sequence increment can be lost and >> readers spin forever. >> >> Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx> >> Cc: Stephen Hemminger <shemminger@xxxxxxxxxx> >> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx> >> Cc: Jason Wang <jasowang@xxxxxxxxxx> > > I'm still thinking about moving tx to take a xmit lock long term, > meanwhile this fix appears appropriate for 3.5. > > Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > > Dave, can you pick this up pls? Done, thanks. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
