From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 11 Jul 2014 20:51:06 +0000
Subject: Re: [RFC Patch V1 00/30] Enable memoryless node on x86 platforms
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To: Andi Kleen <andi@firstfloor.org>
Cc: Greg KH <gregkh@linuxfoundation.org>, Jiang Liu <jiang.liu@linux.intel.com>, Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mgorman@suse.de>, David Rientjes <rientjes@google.com>, Mike Galbraith <umgwanakikbuti@gmail.com>, "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>, Tony Luck <tony.luck@intel.com>, linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org

On Fri, Jul 11, 2014 at 01:20:51PM -0700, Andi Kleen wrote:
> Greg KH <gregkh@linuxfoundation.org> 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?