Re: A question about virtio and KVM

[Dor Laor <dor.laor-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Christian Borntraeger wrote:
>
> Am Dienstag, 6. November 2007 schrieb Dor Laor:
> > The is my latest (old) branch:
> >
> > -Kernel repo: git://kvm.qumranet.com/home/dor/src/virtio/kvm
> > -Userspace repo: 
> git://kvm.qumranet.com/home/dor/src/virtio/kvm-userspace
> > Use virt-final branch.
>
> Yes I had a look at these. This code is virtio draft 4 based, right?
>
Yup, I'll rebase every thing next week.
>
>
> > It is not yet updated to latest virtio & latest kvm.
> > This version uses a pci device for virtio. Since I'm think Rusty's
> > config space does not matches
> > pci config space I might consider changing it. (Preferably not, maybe
> > I'll start using it until we'll have the windows
> > implementation).
> > I'll start work on it on Sunday.
>
> I currently try to use Rusty's config space as we dont have a PCI bus.
> Carsten told me that HPA suggested to split CONFIG_PCI in a way to use
> the hardware independent data structures without providing the hardware.
>
> Carsten do you still remember the full details?
>
The idea was to have pci like configuration space without actually 
support pci.
This is something that Rusty implemented and just today there is a patch 
to convert
the config space to better match pci space.
Anyway you don't really need pci support - exactly like lguest.

> > Can you also publish your tree?
>
> Currently I have no way to publish something via a web page. I could 
> sent you
> patches or the code of our prototype code. Currently it has nothing to 
> do with
> KVM but we try to move more and more into kvm direction.
> As the old code was virtio draft 4 based and I just started to work on it
> again I currently rebased everything and try to make it work again. 
> Basically
> I currently tried to reuse as much as possible from the lguest code.
>
Me also stole most of the implementation from lguest. Actually Rusty 
made virtio
V5 implementation based on the lguest too. It is now shared, general 
virtio code
in the kernel.
>
>
> Chrisian
>


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