[Lguest] [kvm-devel] [PATCH 2/6] virtio_config

Avi Kivity avi at qumranet.com
Sat Sep 22 23:03:33 EST 2007


Rusty Russell wrote:
>>
>> A side effect of this is that Xen drivers can no longer use virtio.
>>     
>
> I'm not so sure.
>
> We were always assuming that Xen could do state management in its virtio
> layer.  If this is not true, it implies we need hooks in the virtio
> drivers, and I don't think we've made it worse by making it translate
> xenbus config info into virtio_config.
>   

This means writing a low-level ABI in terms of a high level API.  And
while that describes virtualization fairly will, I prefer not to do this
more than strictly necessary.

However, this can be rewritten if/when Xen or VMware show interest in
porting their drivers to virtio.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.




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