Re: [PATCH] virtio-spec: clarify ro/rw bits and updating rule of virtio-net status field

[Rusty Russell]

On Tue, 20 Mar 2012 14:20:21 +0800, Jason Wang <jasowang@xxxxxxxxxx> wrote:
> This patch clarifies VIRTIO_NET_S_LINK_UP as a read-only bit and
> VIRTIO_NET_S_ANNOUNCE as a read-writable bit. Also introduce the write 1 to
> clear semantics for all read-writable bits of config status field. This could
> help to reduce the config status field updating race between host and guest and
> also simplify the implementation.
> 
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

This approach assumes an active config field, which neither lguest nor
S/390 have.

Thanks,
Rusty.
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