Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760251AbYGRMjj (ORCPT ); Fri, 18 Jul 2008 08:39:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757330AbYGRMjQ (ORCPT ); Fri, 18 Jul 2008 08:39:16 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:42746 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756725AbYGRMjM (ORCPT ); Fri, 18 Jul 2008 08:39:12 -0400 Date: Fri, 18 Jul 2008 14:38:58 +0200 From: Ingo Molnar To: John Keller Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, takayoshi.kochi@gmail.com, Yinghai Lu , Jesse Barnes Subject: Re: [PATCH] x86: Allow MMCONFIG above 4GB on x86_64 Message-ID: <20080718123858.GR6875@elte.hu> References: <20080709204127.1458.5727.77728@attica.americas.sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080709204127.1458.5727.77728@attica.americas.sgi.com> User-Agent: Mutt/1.5.18 (2008-05-17) 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 Content-Length: 964 Lines: 30 * John Keller wrote: > SGI UV will have MMCFG base addresses that are greater than 4GB (32 > bits). > +++ linux-2.6/arch/x86/kernel/acpi/boot.c 2008-07-09 15:25:32.000000000 -0500 > @@ -200,6 +200,7 @@ int __init acpi_parse_mcfg(struct acpi_t > } > > memcpy(pci_mmcfg_config, &mcfg[1], config_size); > +#ifndef CONFIG_X86_64 > for (i = 0; i < pci_mmcfg_config_num; ++i) { > if (pci_mmcfg_config[i].address > 0xFFFFFFFF) { > printk(KERN_ERR PREFIX > @@ -209,6 +210,7 @@ int __init acpi_parse_mcfg(struct acpi_t > return -ENODEV; > } > } > +#endif hm. If then it should be enabled very carefully and initially probably on a per system (i.e. DMI driven whitelist) basis. Ingo -- 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/