[RESENDx2] [PULL] virtio: fix barriers for virtio-mmio

[Rusty Russell]

On Fri, 23 Dec 2011 13:35:26 +0200, Ohad Ben-Cohen <ohad at wizery.com> wrote:
> On Fri, Dec 23, 2011 at 11:35 AM, Linus Torvalds
> <torvalds at linux-foundation.org> wrote:
> > On x86, there really is never any reason to use the heavy memory
> > barriers unless you are talking to a real device. And last I saw,
> > "virtio" was still about virtual IO.

Not any more, as the commit message describes.

But I missed that they're using rpmsg, which isn't merged yet.

Sorry for the noise,
Rusty.
PS. Switching barriers by bus type is too crude anyway, let's come up
    with something better...