Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757156AbZIDRcw (ORCPT ); Fri, 4 Sep 2009 13:32:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757145AbZIDRcv (ORCPT ); Fri, 4 Sep 2009 13:32:51 -0400 Received: from terminus.zytor.com ([198.137.202.10]:38945 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757134AbZIDRct (ORCPT ); Fri, 4 Sep 2009 13:32:49 -0400 Message-ID: <4AA13B14.20000@zytor.com> Date: Fri, 04 Sep 2009 09:06:44 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Thunderbird/3.0b2 MIME-Version: 1.0 To: Arjan van de Ven CC: Ingo Molnar , Jeremy Fitzhardinge , mingo@redhat.com, linux-kernel@vger.kernel.org, jeremy.fitzhardinge@citrix.com, stable@kernel.org, tglx@linutronix.de, linux-tip-commits@vger.kernel.org, Tejun Heo Subject: Re: [tip:x86/asm] x86/i386: Make sure stack-protector segment base is cache aligned References: <4AA01893.6000507@goop.org> <4AA02687.9080406@zytor.com> <4AA02B02.7080101@goop.org> <4AA031DE.2070109@zytor.com> <20090903211805.GB12566@elte.hu> <20090904071524.0a7267ce@infradead.org> In-Reply-To: <20090904071524.0a7267ce@infradead.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 607 Lines: 20 On 09/04/2009 07:15 AM, Arjan van de Ven wrote: > > the other issue is that afaik we want the kernel to use the other > register than userspace does... > Yes, although it's a pretty marginal win on 32 bits as far as I know. On 64 bits, not so. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/