From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e35.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id l6VNIWbG013926 for ; Tue, 31 Jul 2007 19:18:32 -0400 Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v8.4) with ESMTP id l6VNIW4H217666 for ; Tue, 31 Jul 2007 17:18:32 -0600 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l6VNIW6S001010 for ; Tue, 31 Jul 2007 17:18:32 -0600 Date: Tue, 31 Jul 2007 16:18:31 -0700 From: Nishanth Aravamudan Subject: Re: [PATCH 00/14] NUMA: Memoryless node support V4 Message-ID: <20070731231831.GC31324@us.ibm.com> References: <20070727194316.18614.36380.sendpatchset@localhost> <20070730211937.GD5668@us.ibm.com> <200707310035.09046.ak@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Andi Kleen , Lee Schermerhorn , linux-mm@kvack.org, pj@sgi.com, kxr@sgi.com, Mel Gorman , akpm@linux-foundation.org, KAMEZAWA Hiroyuki , apw@shadowen.org List-ID: On 30.07.2007 [15:36:19 -0700], Christoph Lameter wrote: > On Tue, 31 Jul 2007, Andi Kleen wrote: > > > > > > Hmmm... yes trouble with NUMAQ is that the nodes only have HIGHMEM > > > but no NORMAL memory. The memory is not available to the slab > > > allocator (needs ZONE_NORMAL memory) and we cannot fall back > > > anymore. We may need something like N_SLAB that defines the > > > allowed nodes for the slab allocators. Sigh. > > > > Or just disable 32bit NUMA. The arch/i386 numa code is beyond ugly > > anyways and I don't think it ever worked particularly well. > > So we would no longer support NUMAQ? Is that possible? Seems a bit excessive in the context of these patches. The kernel worked before this stack and doesn't with it. Then again, I guess NUMAQ only worked because it relied on a fallback that shouldn't have happened? I'm not sure what the best solution is -- maybe Andy has some insight? Thanks, Nish -- Nishanth Aravamudan IBM Linux Technology Center -- 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