From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933333AbXCBLIB (ORCPT ); Fri, 2 Mar 2007 06:08:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933336AbXCBLIB (ORCPT ); Fri, 2 Mar 2007 06:08:01 -0500 Received: from wx-out-0506.google.com ([66.249.82.230]:13119 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933333AbXCBLH7 (ORCPT ); Fri, 2 Mar 2007 06:07:59 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:mime-version:content-type:content-transfer-encoding:content-disposition; b=O9AjcS78fKWuod/tADteAAMUHkfHBhLeTIPWG5VVyGXO+/O55iqSzz9oqgtS/rWvIlD35rXydwgLEHXtJBZWvQkIlXK8i1HCljPdzhMdTZs5hPM9asjt89k7Heh3pUihpW8YztizVLSRb4craHQrVYCunIJXq/hTWYOnjdkwkk0= Message-ID: <43c301fe0703020307g37f7df7dxd8f94adaac3acaf3@mail.gmail.com> Date: Fri, 2 Mar 2007 20:07:58 +0900 From: "Takayoshi Kochi" To: linux-acpi@vger.kernel.org Subject: [PATCH] supporting MMCONFIG over 4GB on x86_64 Cc: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, Currently MMCONFIG is ignored if it is located over 4G, but I see no reason to reject it on x86_64 platform. This patch is against 2.6.21-rc2 and was tested on such a machine (MMCONFIG is located at 0xfe10000000) without any problem. Any comments? -- Takayoshi Kochi Signed-off-by: Takayoshi Kochi --- boot.c | 2 ++ 1 files changed, 2 insertions(+) --- linux-2.6.20/arch/i386/kernel/acpi/boot.c.orig 2007-03-02 14:34:02.000000000 +0900 +++ linux-2.6.20/arch/i386/kernel/acpi/boot.c 2007-03-02 19:38:10.000000000 +0900 @@ -198,6 +198,7 @@ int __init acpi_parse_mcfg(struct acpi_t memcpy(pci_mmcfg_config, &mcfg[1], config_size); for (i = 0; i < pci_mmcfg_config_num; ++i) { +#ifndef CONFIG_X86_64 if (pci_mmcfg_config[i].address > 0xFFFFFFFF) { printk(KERN_ERR PREFIX "MMCONFIG not in low 4GB of memory\n"); @@ -205,6 +206,7 @@ int __init acpi_parse_mcfg(struct acpi_t pci_mmcfg_config_num = 0; return -ENODEV; } +#endif } return 0;