From: Dario Faggioli <raistlin@linux.it>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: George Dunlap <george.dunlap@eu.citrix.com>,
"Zhang, Yang Z" <yang.z.zhang@intel.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Andre Przywara <andre.przywara@amd.com>,
xen-devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH 2 of 2 RFC] xl: allow for moving the domain's memory when changing vcpu affinity
Date: Fri, 06 Jul 2012 16:05:50 +0200 [thread overview]
Message-ID: <1341583550.15708.47.camel@Abyss> (raw)
In-Reply-To: <1341581104.32747.43.camel@zakaz.uk.xensource.com>
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On Fri, 2012-07-06 at 14:25 +0100, Ian Campbell wrote:
> We could do something cleverer for HVM (or hybrid) guests to migrate
> pages while the guest is live but migrating a page under a PV guest's
> feet requires quiescing it in the style of a migrate.
>
Which, as we're talking about the same host, means reaching a point
where I have two full copies of the guest memory in RAM, or not?
(Just trying to figure out if I understood things sensibly).
> We could probably manage to make it such that you just need the
> pause/frob/unpause phases without actually writing RAM to disk,
>
Of course, that was in my e-mail too (it's about the above that I'm not
100% sure...).
> and that
> infrastructure might be useful for other reasons I suppose.
>
Definitely.
Thanks and Regards,
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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next prev parent reply other threads:[~2012-07-06 14:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-06 9:54 [PATCH 0 of 2 RFC] xl: move domeins among NUMA nodes Dario Faggioli
2012-07-06 9:54 ` [PATCH 1 of 2 RFC] xl: parse extra_config options even when restoring Dario Faggioli
2012-07-06 9:54 ` [PATCH 2 of 2 RFC] xl: allow for moving the domain's memory when changing vcpu affinity Dario Faggioli
2012-07-06 12:53 ` George Dunlap
2012-07-06 13:25 ` Ian Campbell
2012-07-06 13:30 ` George Dunlap
2012-07-06 13:38 ` Ian Campbell
2012-07-06 14:05 ` Dario Faggioli [this message]
2012-07-06 14:07 ` George Dunlap
2012-07-06 14:42 ` Ian Campbell
2012-07-06 13:57 ` Dario Faggioli
2012-07-06 14:04 ` George Dunlap
2012-07-06 14:14 ` Dario Faggioli
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