Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758756AbYGAVLy (ORCPT ); Tue, 1 Jul 2008 17:11:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753960AbYGAVLq (ORCPT ); Tue, 1 Jul 2008 17:11:46 -0400 Received: from smtp-out01.alice-dsl.net ([88.44.60.11]:5706 "EHLO smtp-out01.alice-dsl.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751881AbYGAVLp (ORCPT ); Tue, 1 Jul 2008 17:11:45 -0400 To: ebiederm@xmission.com (Eric W. Biederman) Cc: Jeremy Fitzhardinge , "H. Peter Anvin" , Mike Travis , Christoph Lameter , Linux Kernel Mailing List Subject: Re: [crash, bisected] Re: [PATCH 3/4] x86_64: Fold pda into per cpu area From: Andi Kleen References: <20080604003018.538497000@polaris-admin.engr.sgi.com> <485ACA8F.10006@sgi.com> <485ACD92.8050109@sgi.com> <485AD138.4010404@goop.org> <485ADA12.5010505@sgi.com> <485ADC73.60009@goop.org> <485BDB04.4090709@sgi.com> <485BE80E.10209@goop.org> <485BF8F5.6010802@goop.org> <485BFFC5.6020404@sgi.com> <486912C4.8070705@sgi.com> <48691556.2080208@zytor.com> <48691E8B.4040605@sgi.com> <48694B3B.3010600@goop.org> <486A61A7.1000902@zytor.com> <486A68DD.80702@goop.org> Date: Tue, 01 Jul 2008 23:11:43 +0200 In-Reply-To: (Eric W. Biederman's message of "Tue, 01 Jul 2008 13:40:40 -0700") Message-ID: <874p79tils.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 01 Jul 2008 21:04:22.0210 (UTC) FILETIME=[090BDA20:01C8DBBE] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 662 Lines: 16 ebiederm@xmission.com (Eric W. Biederman) writes: > > Has anyone investigated using the technique gcc uses for thread local storage? I investigated a long time ago (given when the binutils/gcc support was much more primitive) and my conclusion back then was that doing the same for kernel module (negative addresses) would need new relocation types. And the pain of a binutils change didn't seem worth it. -Andi -- 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/