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Re: [Xen-devel] PV-vNUMA issue: topology is misinterpreted by the guest

On Fri, 2015-07-24 at 12:09 -0400, Konrad Rzeszutek Wilk wrote:
> On Fri, Jul 24, 2015 at 05:58:29PM +0200, Dario Faggioli wrote:

> > So, just to check if I'm understanding is correct: you'd like to add an
> > abstraction layer, in Linux, like in generic (or, perhaps, scheduling)
> > code, to hide the direct interaction with CPUID.
> > Such layer, on baremetal, would just read CPUID while, on PV-ops, it'd
> > check with Xen/match vNUMA/whatever... Is this that you are saying?
> > 
> > If yes, I think I like it...
> I don't think this is workable. For example there are applications
> which use 'cpuid' and figure out the core/thread and use it for its own
> scheduling purposes.
Naah! That pretty much only happens with databases, so, honestly, who
cares!! ;-P ;-P ;-P

<<This happens because I choose it to happen!>> (Raistlin Majere)
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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