Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753933AbZI2T2u (ORCPT ); Tue, 29 Sep 2009 15:28:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753893AbZI2T2t (ORCPT ); Tue, 29 Sep 2009 15:28:49 -0400 Received: from mail-pz0-f191.google.com ([209.85.222.191]:37595 "EHLO mail-pz0-f191.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753752AbZI2T2s convert rfc822-to-8bit (ORCPT ); Tue, 29 Sep 2009 15:28:48 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=sTXJfmnOHvJfC74WvlT7xYG9OioMLQdwdmICChC4rdlxtkN31bCi7l0bEIjq5W50ok nISrvg5hbrsQaWhoWw+Mg1NLvDSwAbqSoWYSy9T0TwPq5bjiX1xtckqRr0rwJ/XjGy/5 p7p0tT/tXBEs2HZEfOpH4ayBDbvm2iqVNx1fU= MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 29 Sep 2009 12:28:51 -0700 Message-ID: <86802c440909291228l7214c46agf9c62c0073b11e2a@mail.gmail.com> Subject: Re: still mtrr problems From: Yinghai Lu To: =?ISO-8859-1?Q?Bo_Brant=E9n?= Cc: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2437 Lines: 48 On Tue, Sep 29, 2009 at 6:52 AM, Bo Brant?n wrote: > > Hello, > > when installing 8G RAM on an Intel DG965OT motherboard Linux will hang at > boot (or parhaps only become very very slow) if I dont add the boot option > mem=8192M, Windows Vista 64-bit works without any probelm on the same > hardware. > > /proc/mtrr: > reg00: base=0x00000000 ( ? 0MB), size=2048MB: write-back, count=1 > reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1 > reg02: base=0xc0000000 (3072MB), size= 256MB: write-back, count=1 > reg03: base=0xcf800000 (3320MB), size= ? 8MB: uncachable, count=1 > reg04: base=0xcf700000 (3319MB), size= ? 1MB: uncachable, count=1 > reg05: base=0x100000000 (4096MB), size=4096MB: write-back, count=1 > reg06: base=0x200000000 (8192MB), size= 512MB: write-back, count=1 > reg07: base=0xd0000000 (3328MB), size= 256MB: write-combining, count=1 > > dmesg|grep e820: > [ ? ?0.000000] ?BIOS-e820: 0000000000000000 - 000000000008f000 (usable) > [ ? ?0.000000] ?BIOS-e820: 000000000008f000 - 00000000000a0000 (reserved) > [ ? ?0.000000] ?BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) > [ ? ?0.000000] ?BIOS-e820: 0000000000100000 - 00000000cf561000 (usable) > [ ? ?0.000000] ?BIOS-e820: 00000000cf561000 - 00000000cf56e000 (reserved) > [ ? ?0.000000] ?BIOS-e820: 00000000cf56e000 - 00000000cf637000 (usable) > [ ? ?0.000000] ?BIOS-e820: 00000000cf637000 - 00000000cf6e9000 (ACPI NVS) > [ ? ?0.000000] ?BIOS-e820: 00000000cf6e9000 - 00000000cf6ed000 (usable) > [ ? ?0.000000] ?BIOS-e820: 00000000cf6ed000 - 00000000cf6f2000 (ACPI data) > [ ? ?0.000000] ?BIOS-e820: 00000000cf6f2000 - 00000000cf6f3000 (usable) > [ ? ?0.000000] ?BIOS-e820: 00000000cf6f3000 - 00000000cf6ff000 (ACPI data) > [ ? ?0.000000] ?BIOS-e820: 00000000cf6ff000 - 00000000cf700000 (usable) > [ ? ?0.000000] ?BIOS-e820: 00000000cf700000 - 00000000d0000000 (reserved) > [ ? ?0.000000] ?BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved) > [ ? ?0.000000] ?BIOS-e820: 0000000100000000 - 000000022c000000 (usable) > -- kernel should trim your e820 to 220000000, could be some strange MTRR layout that we don't want to touch. can you post whole bootlog with debug? 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/