Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755914AbYGIULb (ORCPT ); Wed, 9 Jul 2008 16:11:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753724AbYGIULW (ORCPT ); Wed, 9 Jul 2008 16:11:22 -0400 Received: from gw.goop.org ([64.81.55.164]:60431 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750926AbYGIULV (ORCPT ); Wed, 9 Jul 2008 16:11:21 -0400 Message-ID: <48751B57.8030605@goop.org> Date: Wed, 09 Jul 2008 13:11:03 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Ingo Molnar CC: "Eric W. Biederman" , Mike Travis , Andrew Morton , "H. Peter Anvin" , Christoph Lameter , Jack Steiner , linux-kernel@vger.kernel.org, Arjan van de Ven Subject: Re: [RFC 00/15] x86_64: Optimize percpu accesses References: <20080709165129.292635000@polaris-admin.engr.sgi.com> <20080709200757.GD14009@elte.hu> In-Reply-To: <20080709200757.GD14009@elte.hu> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 617 Lines: 15 Ingo Molnar wrote: > Note that the zero-based percpu problems are completely unrelated to > stackprotector. I was able to hit them with a stackprotector-disabled > gcc-4.2.3 environment. The only reason we need to keep a zero-based pda is to support stack-protector. If we drop drop it, we can drop the pda - and its special zero-based properties - entirely. J -- 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/