From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753824Ab1ASJJU (ORCPT ); Wed, 19 Jan 2011 04:09:20 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:36155 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753675Ab1ASJJS (ORCPT ); Wed, 19 Jan 2011 04:09:18 -0500 Date: Wed, 19 Jan 2011 10:09:04 +0100 From: Ingo Molnar To: "H. Peter Anvin" Cc: Shaohua Li , Markus Trippelsdorf , "Lu, Hongjiu" , Linus Torvalds , Linux Kernel Mailing List , Sam Ravnborg Subject: Re: Linux 2.6.38-rc1 doesn't boot Message-ID: <20110119090904.GA4927@elte.hu> References: <20110119073905.GA1652@gentoo.trippels.de> <20110119074902.GA1670@gentoo.trippels.de> <1295424766.1949.879.camel@sli10-conroe> <4D36A759.60704@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4D36A759.60704@intel.com> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * H. Peter Anvin wrote: > On 01/19/2011 12:12 AM, Shaohua Li wrote: > > On Wed, 2011-01-19 at 15:49 +0800, Markus Trippelsdorf wrote: > >> On 2011.01.19 at 08:39 +0100, Markus Trippelsdorf wrote: > >>> On 2011.01.18 at 15:54 -0800, Linus Torvalds wrote: > >>>> > >>>> And as usual, report any regressions to the lists and the appropriate > >>>> authorities. > >>> > >>> Unfortunately 2.6.38-rc1 doesn't even boot on my machine (amd64). > >>> This is caused by 86b1e8dd83cbb0f: > >>> x86: Make relocatable kernel work with new binutils > >>> > >>> Reverting the commit solves the problem. > >> > >> I'm running the latest binutils: > >> GNU ld (Linux/GNU Binutils) 2.21.51.0.5.20110104 > > Hmm, reproduce it here with binutils-2.21.51.0.6-20110118 > > but not with GNU ld (GNU Binutils for Ubuntu) 2.20.51-system.20100908 > > I got this in system.map: ffffffff03514880 D jiffies_64, which looks > > wrong. > > looks binutils changed something again. > > Have no idea, CC Lu Hongjiu. > > > > Either way... the whole jiffies vs jiffies_64 thing is kind of > ridiculous. We should be able to do it in a completely > architecture-generic way by either making it a union(!) (with "jiffies" > and "jiffies_64" presumably would be #defines, or we do a global replace > across the tree), moving the variable declaration itself to a .S file > (which would only have data components and therefore would be > arch-generic) or doing something like the attached (untested since it is > 1 am here) patch. > > This should let us get rid of the hacks in *all* the architectures, not > just x86. Ok - until it's resolved i'll queue up a revert - a known build failure is preferred to a boot regression. Thanks, Ingo