Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756277Ab1FHTg3 (ORCPT ); Wed, 8 Jun 2011 15:36:29 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:34901 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755200Ab1FHTg0 (ORCPT ); Wed, 8 Jun 2011 15:36:26 -0400 Message-ID: <4DEFCF1A.9030400@kernel.org> Date: Wed, 08 Jun 2011 12:35:54 -0700 From: Yinghai Lu User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110414 SUSE/3.1.10 Thunderbird/3.1.10 MIME-Version: 1.0 To: Matthew Garrett CC: Jim Bos , "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner , Maarten Lankhorst , Linux Kernel Mailing List , Greg KH , Linus Torvalds , Andrew Morton Subject: Re: 2.6.39.1 immediately reboots/resets on EFI system References: <20110607014127.GA8450@srcf.ucam.org> <4DED8752.5070005@kernel.org> <4DEDEA73.7010900@gmail.com> <4DEE17F9.6020503@gmail.com> <4DEEA548.5020405@kernel.org> <4DEFA6E3.6090809@xs4all.nl> <4DEFCAE0.6050700@kernel.org> <20110608192321.GA28865@srcf.ucam.org> <4DEFCD07.5020505@kernel.org> <20110608192950.GA29235@srcf.ucam.org> In-Reply-To: <20110608192950.GA29235@srcf.ucam.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: acsinet21.oracle.com [141.146.126.237] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090209.4DEFCF23.0085,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1623 Lines: 40 On 06/08/2011 12:29 PM, Matthew Garrett wrote: > On Wed, Jun 08, 2011 at 12:27:03PM -0700, Yinghai Lu wrote: >> On 06/08/2011 12:23 PM, Matthew Garrett wrote: >>> On Wed, Jun 08, 2011 at 12:17:52PM -0700, Yinghai Lu wrote: >>>> we need to revert patch from mjg. >>>> >>>> From 916f676f8dc016103f983c7ec54c18ecdbb6e349 Mon Sep 17 00:00:00 2001 >>>> From: Matthew Garrett >>>> Date: Wed, 25 May 2011 09:53:13 -0400 >>>> Subject: [PATCH] x86, efi: Retain boot service code until after switching to >>>> virtual mode >>> >>> That's not a long-term option, since we have no way to distinguish >>> between a machine that requires boot services code to be mapped and a >>> machine that doesn't. Reverting just breaks the former set again. >> >> what former? you can not fix some corner case by breaking most other cases. > > All Dell laptops, all new Apples, some Lenovos, various Intel server > platforms. That I've found so far. do you mean before that patch, all those machine will not boot linux kernel with UEFI support? > >>> We need to ensure that the kernel isn't overlapping boot services code. >> >> bootloader will put kernel from 16M, and boot services are on those area already. > > And we need to be able to map the boot services code, so we can't put > the kernel on top of it. after bootloader, those area should be free already. Yinghai -- 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/