Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755979AbZAAEES (ORCPT ); Wed, 31 Dec 2008 23:04:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753829AbZAAEED (ORCPT ); Wed, 31 Dec 2008 23:04:03 -0500 Received: from one.firstfloor.org ([213.235.205.2]:60026 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753620AbZAAEED (ORCPT ); Wed, 31 Dec 2008 23:04:03 -0500 Date: Thu, 1 Jan 2009 05:17:27 +0100 From: Andi Kleen To: david@lang.hm Cc: Andi Kleen , Cyrill Gorcunov , linux-kernel Subject: Re: early exception error Message-ID: <20090101041727.GW496@one.firstfloor.org> References: <87k59hur5f.fsf@basil.nowhere.org> <20081231093803.GA20882@localhost> <20081231183039.GE20882@localhost> <20081231195005.GT496@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1253 Lines: 30 On Wed, Dec 31, 2008 at 12:59:08PM -0800, david@lang.hm wrote: > On Wed, 31 Dec 2008, Andi Kleen wrote: > > >>on the picture you sent me i noticed the message > >>"Your memory is not aligned you need to rebuild your > >>kernel with bigger NODEMAP SIZE shift=20" and then > >>srat code complains about "No NUMA code hash function found" > >>which looks a bit scary. Btw, could you post this picture > >>on some public resource so NUMA people could check it? > > > >This case used to be handled cleanly (NUMA disabled), but perhaps > >that has regressed. But still it sounds like something is going wrong, > >unless his machine really has a very weird memory map. > > it shouldn't, it was one of the high-volume servers 4-5 years ago and only > has 4G of ram in it >From looking at the screenshot Cyrill sent you seem to have a funny SRAT with overlapping areas that is rejected in the end. I suspect the fallback code doesn't handle this properly. Does it work when you boot with numa=noacpi ? -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/