From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031282Ab2COB3r (ORCPT ); Wed, 14 Mar 2012 21:29:47 -0400 Received: from mail-we0-f174.google.com ([74.125.82.174]:61191 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760704Ab2COB3p (ORCPT ); Wed, 14 Mar 2012 21:29:45 -0400 Date: Thu, 15 Mar 2012 01:29:41 +0000 From: Motiejus =?utf-8?Q?Jak=C5=A1tys?= To: Vasco Dias , linux-kernel@vger.kernel.org, mikew@google.com Cc: Matt Fleming Subject: Re: Problem with efibootmgr on asus 1215b Message-ID: <20120315012941.GA24251@pierce> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120312143806.GB12382@srcf.ucam.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Somewhat late to this I know, but: > > On Fri, Jan 20, 2012 at 11:48:26AM +0000, Matt Fleming wrote: > > [ 441.370854] BUG: unable to handle kernel paging request at 00000000ffe1fbc8 > > So it's attempting a direct access to 00000000ffe1fbc8, which, if I had > to guess, is probably where the flash is located. That makes sense from > the perspective of it being used in efivars. The obvious sadness here is > that it's doing this with a physical address rather than a virtual one. > It's possible that the machine is too broken to live - does Windows > succeed in performing a UEFI install? If it does then I think we need to > just accept that life is ugly and map the UEFI runtime areas with a 1:1 > mapping as well as into virtual address space. That would also fix the > problem we see right now where the reboot call often uses a physical > address rather than a virtual one. Just to let you know I apparently have exactly the same issue with the same laptop. If it can help, I could try installing the M$ Student Edition during the weekend and report the results. Windows Server 2008 64-bit, fresh GPT partition table will be my lab environment. Standard installation procedure. I am running Ubuntu 12.04 with 3.2.0-18-generic. Motiejus