From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f169.google.com (mail-we0-f169.google.com [74.125.82.169]) by kanga.kvack.org (Postfix) with ESMTP id 5F80A6B0035 for ; Fri, 11 Jul 2014 17:58:44 -0400 (EDT) Received: by mail-we0-f169.google.com with SMTP id t60so1677787wes.0 for ; Fri, 11 Jul 2014 14:58:42 -0700 (PDT) Received: from one.firstfloor.org (one.firstfloor.org. [193.170.194.197]) by mx.google.com with ESMTPS id vq2si6450853wjc.89.2014.07.11.14.58.40 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 11 Jul 2014 14:58:40 -0700 (PDT) Date: Fri, 11 Jul 2014 23:58:37 +0200 From: Andi Kleen Subject: Re: [RFC Patch V1 00/30] Enable memoryless node on x86 platforms Message-ID: <20140711215837.GU18735@two.firstfloor.org> 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> <20140711205106.GB20603@laptop.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140711205106.GB20603@laptop.programming.kicks-ass.net> Sender: owner-linux-mm@kvack.org List-ID: To: Peter Zijlstra Cc: Andi Kleen , 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 10:51:06PM +0200, Peter Zijlstra wrote: > 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. 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 -- 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