Re: [Qemu-devel] Re: [PATCH v2 9/9] Add -kvm option

[Anthony Liguori]

Avi Kivity wrote:
> That's a bug in the userspace pit :)
>
> I'm worried about things like 'info pit' needing dual implementations.

You mean info qdm?

It'll Just Work.

> > > We'll have the same problem with vhost-net, only there the 
> > > duplication will be much greater if we split the implementation.
> >
> > I'd rather not treat vhost-net like a device model and instead treat 
> > it like a -net backend.  If we can bounce requests through userspace 
> > (and we can), we should be able to use it for any device model.  In 
> > the case of virtio-net, we should be able to short-circuit things 
> > such that we don't have to go through userspace.  It's admittedly 
> > very hairy without a point-to-point net abstraction.
>
> Interesting idea.  I think it'll be hairy even with a point-to-point 
> net abstraction, but it's worth trying.

Could be interesting trying to tie the e1000 to vhost-net performance 
wise...

Regards,

Anthony Liguori