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

[Andi Kleen]

On Fri, Jul 11, 2014 at 10:51:06PM +0200, Peter Zijlstra wrote:
> 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.

True. We should recommend that anyone running Linux will email you
for approval of their configuration first.


> > There are other cases too.
> 
> Are there any sane ones

Yes.

-Andi
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