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xen-devel
Re: [Xen-devel] Qemu version for upcoming Xen 4.0 release?
On Wed, Jan 06, 2010 at 05:28:47PM +0000, Ian Jackson wrote:
> Pasi Kärkkäinen writes ("Re: [Xen-devel] Qemu version for upcoming Xen 4.0
> release?"):
> > Ian: What do you think? New major version of Xen would be good a
> > opportunity to sync with upstream Qemu development.. especially when
> > Qemu just released new stable version.
>
> qemu upstream development has been very active particularly in the 2nd
> half of last year. Applying our current patchset to qemu 0.12.1 is
> more of a rewrite than a sync. I've played around a bit with this but
> it's been clear for some months from the huge changes upstream that
> the resync would be a big deal. It's not a good idea to do at this
> stage of the Xen release cycle, and the qemu upstream release came a
> bit later for us.
>
> We'll be looking into doing this for the next Xen release particularly
> if qemu upstream's major architectural rework projects slow down.
> Not that there's anything wrong with what qemu upstream have been
> doing - lots of it is very good stuff and very important. But it
> doesn't provide a very easy base for throwing in a large set of
> changes like ours.
>
> > Or is it too painful to re-sync qemu-xen with upstream?
>
> It's certainly not something we can do for 4.0. There's a lot of work
> needed and the resulting qemu-xen would be quite unlike the current
> one so would need a lot of time to settle down.
>
Ok, that makes sense. Thanks for the comments.
-- Pasi
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