Re: [xen-devel][vNUMA v2][PATCH 2/8] public interface

[Andre Przywara <andre.przywara@xxxxxxx>]

Dulloor wrote:
> On Tue, Aug 3, 2010 at 10:27 PM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:
> > On 03/08/2010 22:55, "Andre Przywara" <andre.przywara@xxxxxxx> wrote:
> >
> > > > As such, the purpose of vnode-to-mnode translation is for the enlightened
> > > > guests to know where their underlying memory comes from, so that
> > > > over-provisioning features
> > > > like ballooning are given a chance to maintain this distribution.
> > > I was afraid you were saying that ;-) I haven't thought about this in
> > > detail, but maybe we can make an exception for Dom0 only, because this
> > > is the most prominent and frequent user of ballooning. But I really
> > > think that DomUs should not know about or deal with host NUMA nodes.
> > So long as it gets renamed to 'node_id' in the info structure I'm okay with
> > it. That doesn't preclude simply setting that field to 0...nr_vnodes-1 and
> > doing translation in the hypervisor, but also leaves us a bit of
> > flexibility.
> Yes, I like this idea. Will do that.
Ack, that sounds good. So we have virtual nodes, virtual physical nodes 
and machine nodes.
Andre.

--
Andre Przywara
AMD-OSRC (Dresden)
Tel: x29712


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