Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751225AbWHLHVd (ORCPT ); Sat, 12 Aug 2006 03:21:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751360AbWHLHVd (ORCPT ); Sat, 12 Aug 2006 03:21:33 -0400 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:30338 "EHLO ebiederm.dsl.xmission.com") by vger.kernel.org with ESMTP id S1751225AbWHLHVd (ORCPT ); Sat, 12 Aug 2006 03:21:33 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Don Zickus Cc: vgoyal@in.ibm.com, fastboot@osdl.org, Horms , Jan Kratochvil , "H. Peter Anvin" , Magnus Damm , linux-kernel@vger.kernel.org Subject: Re: [Fastboot] [CFT] ELF Relocatable x86 and x86_64 bzImages References: <20060807174439.GJ16231@redhat.com> <20060807235727.GM16231@redhat.com> <20060809200642.GD7861@redhat.com> <20060810131323.GB9888@in.ibm.com> <20060810181825.GD14732@in.ibm.com> <20060811212522.GF18865@redhat.com> Date: Sat, 12 Aug 2006 01:20:29 -0600 In-Reply-To: <20060811212522.GF18865@redhat.com> (Don Zickus's message of "Fri, 11 Aug 2006 17:25:22 -0400") Message-ID: User-Agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1322 Lines: 33 Don Zickus writes: >> >> >> >> I'm a little disappointed but at this point it isn't a great surprise, >> >> the code is early yet and hasn't had much testing or attention. >> >> I wonder if I have missed something else silly. >> >> >> >> As for testing, can you use plain kexec to load the kernel at a >> >> different address? I'm curious to know if it is something related >> >> to the kexec on panic path or if it is just running at a different >> >> location that is the problem. >> > > > I think I have found the 'something silly'. Here is a patch that allows > our Dell em64t boxes to boot. This change matches the original code. The > main difference that caused the problems was the setting of _PAGE_NX bit. > This caused issues in early_io_remap(). > > Thanks to Larry Woodman for debugging this. This looks like a different one but looks fairly sane. Do you know what code had problems having _PAGE_NX set. What are we doing with early_ioremap the requires execute permissions. It doesn't sound right that we would need this. Eric - 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/