From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752713AbYAWKpT (ORCPT ); Wed, 23 Jan 2008 05:45:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751899AbYAWKpG (ORCPT ); Wed, 23 Jan 2008 05:45:06 -0500 Received: from cantor.suse.de ([195.135.220.2]:54012 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751693AbYAWKpF (ORCPT ); Wed, 23 Jan 2008 05:45:05 -0500 From: Andi Kleen To: Mel Gorman Subject: Re: [PATCH 0/2] Relax restrictions on setting CONFIG_NUMA on x86 Date: Wed, 23 Jan 2008 11:45:14 +0100 User-Agent: KMail/1.9.6 (enterprise 20070904.708012) Cc: mingo@elte.hu, linux-mm@kvack.org, linux-kernel@vger.kernel.org, apw@shadowen.org References: <20080118153529.12646.5260.sendpatchset@skynet.skynet.ie> <200801221433.29771.andi@firstfloor.org> <20080123102834.GC21455@csn.ul.ie> In-Reply-To: <20080123102834.GC21455@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801231145.14915.andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > i386 already has srat parsing code (just written in a horrible hackish > > way); but it exists arch/x86/kernel/srat_32.c > > Yes, I spotted that. Enabling it required a Kconfig change does it? I was pretty sure that a !NUMAQ i386 CONFIG_NUMA build already used that. At least that was the case when I last looked. If that has changed it must have bitrotted recently. > or two and > enabling BOOT_IOREMAP. It then crashes early in boot on a call to strlen() > so I went with the stubs and SRAT disabled for the moment. Crashed on a Opteron box? That was always the case If it crashed on a (older) Summit then it likely bitrotted, because that worked at some point. The code was originally written by Pat G. for Summit1 and I believe was at least used by some people (no distributions) for S2, possible 3 too. > Ok, understood. When I next revisit this, I'll look at making ACPI_SRAT > and BOOT_IOREMAP work on normal machines and see what happens. Thanks. Again the problem shouldn't be normal machines, but non Summit NUMA systems. -Andi