Re: [Qemu-devel] [PATCH] qemu/virtio: make wmb compiler barrier + comments

2009-11-10 Thread Paul Brook
On Monday 26 October 2009, Michael S. Tsirkin wrote: wmb must be at least a compiler barrier, even without SMP. Why? Paul

[Qemu-devel] [PATCH] qemu/virtio: make wmb compiler barrier + comments

2009-10-26 Thread Michael S. Tsirkin
wmb must be at least a compiler barrier, even without SMP. Further, we likely need some rmb()/mb() as well: I have not audited the code but lguest has mb(), add a comment for now. Signed-off-by: Michael S. Tsirkin m...@redhat.com --- hw/virtio.c |5 - 1 files changed, 4 insertions(+), 1