> -----Original Message-----
> From: xen-devel-bounces@lists.xensource.com
> [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of
> Pasi Kärkkäinen
> Sent: 10 February 2007 13:22
> To: xen-devel@lists.xensource.com
> Subject: [Xen-devel] HVM live migration status?
>
> Hi list!
>
> What''s the status of HVM live migration.. any patches floating
around?
>
> I guess HVM save/restore starts to be at the point where
> people could start
> playing with the migration..
You could possibly play with migration, but I think Live migration is a bit in
the future - it require shadow paging to support log-dirty, which is currently
not supported - because for live migration, you keep the old domain running
whilst starting the new one, and to understand what has changed since the start
of migration until "handover", you need to know which pages of memory
has been modified during the "copy" of memory.
Currently live migration is "early abort" in xc_hvm_save() - it checks
the "live" flag and says "Can''t do Live save". But
that''s a small patch, compared to supporting log-dirty.
--
Mats>
> -- Pasi
>
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