Re: [PATCH 0/6] virtio with config abstraction and ring implementation

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

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Rusty Russell wrote:
>
> Hi all,
>
>         This patch series attempts to come closer to unifying kvm and 
> lguest's
> usage of virtio.  As these two are the first implementations we've seen,
> I hope making them closer will make future ones closer too.
>
>         Drivers now unpack their own configuration: their probe() 
> methods are
> uniform.  The configuration mechanism is extensible and can be backed by
> PCI, a string of bytes, or something else.
>
>         I've abstracted out the lguest ring buffer code into a common 
> library.
> The format has changed slightly (mainly because I had an epiphany about
> inter-guest I/O).
>
>         I also implemented a console (lguest needs one).
>
>         Finally, there is a working lguest implementation.  Unfortunately,
> lguest is being refactored for non-i386 ports, so the virtio patches sit
> at the end of the (quite long) for-2.6.24 patchqueue.  Nonetheless, they
> can be found at http://lguest.ozlabs.org/patches (click on bz2 to get
> the series).
>
> Cheers!
> Rusty.
>
Superb job, it saved me the burden of try to merge the in-house 
virtio_backend.

I like the separation of the ring code, the improved descriptors and the 
notify too.
Regarding the pci config space, I rather see config_ops type of 
operations to let
the 390/xen/other implementations jump on our wagon.

Maybe change the offset/len type into a handle pointer and function 
pointers.
The best would be to let them comment on that. I glimpsed over xen 
netfront.c and I think that
the config space can be used without too many hassles
Dor.


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