Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762186AbYAKRT3 (ORCPT ); Fri, 11 Jan 2008 12:19:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761369AbYAKRTJ (ORCPT ); Fri, 11 Jan 2008 12:19:09 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:37886 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761253AbYAKRTH (ORCPT ); Fri, 11 Jan 2008 12:19:07 -0500 Date: Fri, 11 Jan 2008 09:18:41 -0800 From: Arjan van de Ven To: dean gaudet Cc: Ingo Molnar , Andi Kleen , linux-kernel@vger.kernel.org, Thomas Gleixner , "H. Peter Anvin" , Venki Pallipadi , suresh.b.siddha@intel.com, Dave Jones Subject: Re: CPA patchset Message-ID: <20080111091841.04eecd54@laptopd505.fenrus.org> In-Reply-To: References: <20080103424.989432000@suse.de> <20080110093126.GA360@elte.hu> <20080110095337.GK25945@bingen.suse.de> <20080110100443.GB28209@elte.hu> <20080110100712.GO25945@bingen.suse.de> <20080110105726.GD28209@elte.hu> <20080110111248.GR25945@bingen.suse.de> <20080111071936.GA16175@elte.hu> Organization: Intel X-Mailer: Claws Mail 3.0.2 (GTK+ 2.12.1; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 954 Lines: 23 On Fri, 11 Jan 2008 09:02:46 -0800 (PST) dean gaudet wrote: > > Bulk ops (string ops, etc.) will do full cacheline writes too, > > without filling in the cacheline. > > on intel with fast strings enabled yes. mind you intel gives hints in > the documentation these operations don't respect coherence... and i > asked about this when they posted their memory ordering paper but got > no response. I know there's an answer on the way; it just needs to get checked by architects for cpus we shipped in like the last 10 years ;) -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/