Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755634AbYGKRCW (ORCPT ); Fri, 11 Jul 2008 13:02:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754123AbYGKRCO (ORCPT ); Fri, 11 Jul 2008 13:02:14 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:54442 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753798AbYGKRCN (ORCPT ); Fri, 11 Jul 2008 13:02:13 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Christoph Lameter Cc: "H. Peter Anvin" , Mike Travis , Jeremy Fitzhardinge , Arjan van de Ven , Ingo Molnar , Andrew Morton , Jack Steiner , linux-kernel@vger.kernel.org, Rusty Russell References: <20080709165129.292635000@polaris-admin.engr.sgi.com> <20080709200757.GD14009@elte.hu> <48751B57.8030605@goop.org> <20080709133958.612635f0@infradead.org> <4875231F.1020506@zytor.com> <487524A0.6020304@goop.org> <487529AE.3060505@zytor.com> <48753A71.2030006@zytor.com> <48763732.7020805@sgi.com> <487641D6.5060206@goop.org> <487649B2.3000405@sgi.com> <48764E8A.5010400@zytor.com> <4876766F.4030605@linux-foundation.org> <48767804.8080007@zytor.com> <48767A28.7070900@linux-foundation.org> <48767AF5.7030205@zytor.com> <48777D15.6040107@linux-foundation.org> Date: Fri, 11 Jul 2008 09:57:54 -0700 In-Reply-To: <48777D15.6040107@linux-foundation.org> (Christoph Lameter's message of "Fri, 11 Jul 2008 10:32:37 -0500") Message-ID: User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-SA-Exim-Connect-IP: 24.130.11.59 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-DCC: XMission; sa04 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;Christoph Lameter X-Spam-Relay-Country: X-Spam-Report: * -1.8 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -1.1 BAYES_05 BODY: Bayesian spam probability is 1 to 5% * [score: 0.0162] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa04 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 XM_SPF_Neutral SPF-Neutral Subject: Re: [RFC 00/15] x86_64: Optimize percpu accesses X-SA-Exim-Version: 4.2 (built Thu, 03 Mar 2005 10:44:12 +0100) X-SA-Exim-Scanned: Yes (on mgr1.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 505 Lines: 15 > x86_64 are small systems? For 64 bit use one would expect 4GB of memory. Anything over 1G where 32bit runs out of lowmem starts to be a win. Plus sometimes it just doesn't make sense to use a 32bit kernel. Expecting 4GB of real memory seems silly. Eric -- 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/