Re: [RFC Patch V1 00/30] Enable memoryless node on x86 platforms

From: Peter Zijlstra
Date: Fri Jul 11 2014 - 16:51:24 EST


On Fri, Jul 11, 2014 at 01:20:51PM -0700, Andi Kleen wrote:
> Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> writes:
>
> > On Fri, Jul 11, 2014 at 10:29:56AM +0200, Peter Zijlstra wrote:
> >> On Fri, Jul 11, 2014 at 03:37:17PM +0800, Jiang Liu wrote:
> >> > Any comments are welcomed!
> >>
> >> Why would anybody _ever_ have a memoryless node? That's ridiculous.
> >
> > I'm with Peter here, why would this be a situation that we should even
> > support? Are there machines out there shipping like this?
>
> We've always had memory nodes.
>
> A classic case in the old days was a two socket system where someone
> didn't populate any DIMMs on the second socket.

That's a obvious; don't do that then case. Its silly.

> There are other cases too.

Are there any sane ones?
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