Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753953AbZDWAvV (ORCPT ); Wed, 22 Apr 2009 20:51:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752189AbZDWAvL (ORCPT ); Wed, 22 Apr 2009 20:51:11 -0400 Received: from hera.kernel.org ([140.211.167.34]:58161 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751841AbZDWAvK (ORCPT ); Wed, 22 Apr 2009 20:51:10 -0400 Message-ID: <49EFBB0E.3030401@kernel.org> Date: Wed, 22 Apr 2009 17:49:18 -0700 From: Yinghai Lu User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: Jesse Barnes CC: Ivan Kokshaysky , Ingo Molnar , Linus Torvalds , "H. Peter Anvin" , Andrew Morton , Thomas Gleixner , "linux-kernel@vger.kernel.org" , linux-pci@vger.kernel.org, yannick.roehlly@free.fr Subject: Re: [RFC PATCH 1/2] pci: don't assume pref memio are 64bit -v3 References: <49E99054.6050208@kernel.org> <49EA57C4.1000603@kernel.org> <20090419090208.GA30211@elte.hu> <20090419090615.GA30631@elte.hu> <20090420223305.GA15340@jurassic.park.msu.ru> <49ED0EBC.4070901@kernel.org> <20090421105629.GB17904@jurassic.park.msu.ru> <49EF9C10.6090107@kernel.org> <20090422154900.08f8f366@hobbes> In-Reply-To: <20090422154900.08f8f366@hobbes> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2054 Lines: 46 Jesse Barnes wrote: > On Wed, 22 Apr 2009 15:37:04 -0700 > Yinghai Lu wrote: > >> one system with 4g installed ( there is 1g hole) >> >> when 4G installed. >> BIOS put ACPI etc need the hole >> [ 0.000000] BIOS-provided physical RAM map: >> [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009bc00 >> (usable) [ 0.000000] BIOS-e820: 000000000009bc00 - >> 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: >> 00000000000e3000 - 0000000000100000 (reserved) [ 0.000000] >> BIOS-e820: 0000000000100000 - 00000000bffa0000 (usable) >> [ 0.000000] BIOS-e820: 00000000bffa0000 - 00000000bffae000 (ACPI >> data) [ 0.000000] BIOS-e820: 00000000bffae000 - 00000000bfff0000 >> (ACPI NVS) [ 0.000000] BIOS-e820: 00000000bfff0000 - >> 00000000c0000000 (reserved) [ 0.000000] BIOS-e820: >> 00000000fee00000 - 00000000fee01000 (reserved) [ 0.000000] >> BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) >> [ 0.000000] BIOS-e820: 0000000100000000 - 0000000140000000 >> (usable) so in kernel resource will be reserved for 0xbffa0000 - >> 0xbfff0000 for ACPI 0x100000 - 0xbffa0000 for RAM... >> >> and BIOS set >> [ 0.240007] pci 0000:00:01.0: bridge 64bit mmio pref: >> [0xbdf00000-0xddefffff] [ 0.237102] pci 0000:01:00.0: reg 10 32bit >> mmio: [0xc0000000-0xcfffffff] that is conflict with reserved res. so >> it can not be reserved Kernel. >> >> then Kernel try to get range from 0x140000000 ( above the RAM, 5G and >> above 4g) and set let the bridge to use it, and ATI cards to use it. >> >> but the problem is that ATI only support 32bit ... > > So Ivan's patch didn't work for you for this problem? I was planning > on applying it, but it would be nice to get some test results first. looks like Ivan patch still has some problem. YH -- 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/