From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e33.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id m5AM5cdA007497 for ; Tue, 10 Jun 2008 18:05:38 -0400 Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m5AM5coB174796 for ; Tue, 10 Jun 2008 16:05:38 -0600 Received: from d03av01.boulder.ibm.com (loopback [127.0.0.1]) by d03av01.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m5AM5bNj015032 for ; Tue, 10 Jun 2008 16:05:38 -0600 Subject: Re: [PATCH -mm 13/25] Noreclaim LRU Infrastructure From: Dave Hansen In-Reply-To: <20080610143334.c53d7d8a.akpm@linux-foundation.org> References: <20080606202838.390050172@redhat.com> <20080606202859.291472052@redhat.com> <20080606180506.081f686a.akpm@linux-foundation.org> <20080608163413.08d46427@bree.surriel.com> <20080608135704.a4b0dbe1.akpm@linux-foundation.org> <20080608173244.0ac4ad9b@bree.surriel.com> <20080608162208.a2683a6c.akpm@linux-foundation.org> <20080608193420.2a9cc030@bree.surriel.com> <20080608165434.67c87e5c.akpm@linux-foundation.org> <20080610153702.4019e042@cuia.bos.redhat.com> <20080610143334.c53d7d8a.akpm@linux-foundation.org> Content-Type: text/plain Date: Tue, 10 Jun 2008 15:05:35 -0700 Message-Id: <1213135535.7261.10.camel@nimitz> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Rik van Riel , clameter@sgi.com, linux-kernel@vger.kernel.org, lee.schermerhorn@hp.com, kosaki.motohiro@jp.fujitsu.com, linux-mm@kvack.org, eric.whitney@hp.com, Paul Mundt , Andi Kleen , Ingo Molnar , Andy Whitcroft List-ID: On Tue, 2008-06-10 at 14:33 -0700, Andrew Morton wrote: > Maybe it's time to bite the bullet and kill i386 NUMA support. afaik > it's just NUMAQ and a 2-node NUMAish machine which IBM made (as400?) Yeah, IBM sold a couple of these "interesting" 32-bit NUMA machines: https://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/tips0267.html?Open I think those maxed out at 8 nodes, ever. But, no distro ever turned NUMA on for i386, so no one actually depends on it working. We do have a bunch of systems that we use for testing and so forth. It'd be a shame to make these suck *too* much. The NUMA-Q is probably also so intertwined with CONFIG_NUMA that we'd likely never get it running again. I'd rather just bloat page->flags on these platforms or move the sparsemem/zone/node bits elsewhere than kill NUMA support. -- Dave -- 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