From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f178.google.com (mail-pd0-f178.google.com [209.85.192.178]) by kanga.kvack.org (Postfix) with ESMTP id 4D2F36B0035 for ; Fri, 11 Jul 2014 16:51:15 -0400 (EDT) Received: by mail-pd0-f178.google.com with SMTP id r10so1951336pdi.23 for ; Fri, 11 Jul 2014 13:51:15 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id bq15si1800331pdb.156.2014.07.11.13.51.13 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 11 Jul 2014 13:51:13 -0700 (PDT) Date: Fri, 11 Jul 2014 22:51:06 +0200 From: Peter Zijlstra Subject: Re: [RFC Patch V1 00/30] Enable memoryless node on x86 platforms Message-ID: <20140711205106.GB20603@laptop.programming.kicks-ass.net> References: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> <20140711082956.GC20603@laptop.programming.kicks-ass.net> <20140711153314.GA6155@kroah.com> <8761j3ve8s.fsf@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8761j3ve8s.fsf@tassilo.jf.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andi Kleen Cc: Greg KH , Jiang Liu , Andrew Morton , Mel Gorman , David Rientjes , Mike Galbraith , "Rafael J . Wysocki" , Tony Luck , 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 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? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org