Re: [Spice-devel] [Qemu-devel] spicevmv chardev, guest agents and paravirtual mouse

[Anthony Liguori]

On 01/12/2011 01:28 PM, Alon Levy wrote:
> Regarding wire protocol this would of course be very wasteful. If it's used
> between the guest and host except for the translation overhead, which is minimal
> I think (except for a copy-paste of a large amount of data - I'm not familiar
> enough with XML-RPC but I guess it has some way to pass binary buffers 
> unmodified?),
> I don't have a particular objection, other then hoping we consider alternatives 
> (there
> are a few).
>
> Regarding one-off protocols in general, I agree it creates code duplication
> and should be avoided. In that respect I prefer mechanisems that produce
> implementations from a declarative description. But I would prefer a binary
> protocol, possibly a convertion of the existing spice protocol to declarative
> form (like Alex did to the core spice protocols, see spice.proto and 
> spice1.proto,
> http://cgit.freedesktop.org/spice/spice/tree/spice.proto
> Of course there are many implementations of this outside of spice, like protocol
> buffers). I also don't think a one-off is necessarily a bad thing.
>    

Yeah, it might be worthwhile to look at protocol buffers.

Regards,

Anthony Liguori

> > Note while on the subject of design, I think that having some sort of
> > capabilities negotiation so that we can provide compatibility between
> > different versions is important.
> >
> > Regards,
> >
> > Hans
> >
> >