[RFC][PATCH] virtio: 64 bit features

Rusty Russell
Tue, 12 Apr 2011 03:25:42 -0000

On Mon, 11 Apr 2011 19:55:25 +0300, "Michael S. Tsirkin" <mst at
redhat.com> wrote:
> Extend features to 64 bit so we can use more
> transport bits.
>
> Future patches add two new feature bits which would
> exhaust the supply of transport feature bits,
> so let's add bit 31 to tell the guest that
> there are now 64 worth of features.
>
> For PCI this also changes the config layout.
>
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>

This was pretty much the way I imagined it would work.  We need a patch
to the spec and a lot of cross testing...

Thanks!
Rusty.