Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755893AbXJ2SFl (ORCPT ); Mon, 29 Oct 2007 14:05:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758778AbXJ2SF3 (ORCPT ); Mon, 29 Oct 2007 14:05:29 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:39794 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758720AbXJ2SF1 (ORCPT ); Mon, 29 Oct 2007 14:05:27 -0400 Date: Mon, 29 Oct 2007 11:07:39 -0700 From: Greg KH To: Dave Jones , Linux Kernel , Martin Ebourne , Zou Nan hai , Suresh Siddha , Andi Kleen , stable@kernel.org, Andrew Morton , Linus Torvalds Subject: Re: [stable] 2.6.23 boot failures on x86-64. Message-ID: <20071029180739.GA17595@kroah.com> References: <20071029175014.GH7793@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071029175014.GH7793@redhat.com> User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1711 Lines: 46 On Mon, Oct 29, 2007 at 01:50:14PM -0400, Dave Jones wrote: > We've had a number of people reporting that their x86-64s stopped booting > when they moved to 2.6.23. It rebooted just after discovering the AGP bridge > as a result of the IOMMU init. > > Martin tracked this down to the following commit. > > > commit 2e1c49db4c640b35df13889b86b9d62215ade4b6 > Author: Zou Nan hai > Date: Fri Jun 1 00:46:28 2007 -0700 > > x86_64: allocate sparsemem memmap above 4G > > On systems with huge amount of physical memory, VFS cache and memory memmap > may eat all available system memory under 4G, then the system may fail to > allocate swiotlb bounce buffer. > > There was a fix for this issue in arch/x86_64/mm/numa.c, but that fix dose > not cover sparsemem model. > > This patch add fix to sparsemem model by first try to allocate memmap above > 4G. > > Signed-off-by: Zou Nan hai > Acked-by: Suresh Siddha > Cc: Andi Kleen > Cc: > Signed-off-by: Andrew Morton > Signed-off-by: Linus Torvalds > > > This should be probably be reverted for 2.6.23-stable, and either fixed > properly in .24, or reverted there too. I'll be glad to revert it in -stable, if it's also reverted in Linus's tree first :) thanks, greg k-h - 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/