From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754735AbYETMJ3 (ORCPT ); Tue, 20 May 2008 08:09:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757873AbYETMJU (ORCPT ); Tue, 20 May 2008 08:09:20 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:38573 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757368AbYETMJT (ORCPT ); Tue, 20 May 2008 08:09:19 -0400 Date: Tue, 20 May 2008 14:08:55 +0200 From: Ingo Molnar To: Andy Whitcroft Cc: Mel Gorman , Thomas Gleixner , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: Re: [PATCH 0/2] panics booting NUMA SPARSEMEM on x86_32 NUMA Message-ID: <20080520120855.GA10080@elte.hu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andy Whitcroft wrote: > We have been seeing panics booting NUMA SPARSEMEM kernels on x86_32 > hardware, while trying to allocate node local memory in early boot. > These are caused by a miss-allocation of the node pgdat structures > when numa remap is disabled. > > Following this email are two patches, the first reenables numa remap > for SPARSEMEM as the underlying bug has now been fixed. The second > hardens the pgdat allocation in the face of there being no numa remap > for a particular node (which may still occur). applied to -tip, thanks Andy. Ingo