Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750893AbWISSsw (ORCPT ); Tue, 19 Sep 2006 14:48:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750904AbWISSsw (ORCPT ); Tue, 19 Sep 2006 14:48:52 -0400 Received: from smtp105.mail.mud.yahoo.com ([209.191.85.215]:7284 "HELO smtp105.mail.mud.yahoo.com") by vger.kernel.org with SMTP id S1750893AbWISSsv (ORCPT ); Tue, 19 Sep 2006 14:48:51 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=OqqOQ2pt5K31O7Vuv+P86uYmds+fCpymNQsxGoMwfITjZDl1GE5fA5Q24e54SE3baU/D5o4H7zVe1rD15tgWRKJzq4sbf5WjbBzDLzh9F7A69RdiY1EhDm+AVhNgdYKxDeDsNNg3GeoSd9RkI2Pr9cozvfXR+Lfe7RC2x8mNoaE= ; Message-ID: <45103B8D.1040006@yahoo.com.au> Date: Wed, 20 Sep 2006 04:48:45 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051007 Debian/1.7.12-1 X-Accept-Language: en MIME-Version: 1.0 To: paulmck@us.ibm.com CC: Alan Stern , David Howells , Kernel development list Subject: Re: Uses for memory barriers References: <45102E21.2060301@yahoo.com.au> <20060919181919.GG1310@us.ibm.com> In-Reply-To: <20060919181919.GG1310@us.ibm.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 716 Lines: 22 Paul E. McKenney wrote: > On Wed, Sep 20, 2006 at 03:51:29AM +1000, Nick Piggin wrote: >>If store forwarding is able to occur outside cache coherency protocol, >>then I don't see why not. I would also be interested to know if this >>is the case on real systems. > > > We are discussing multiple writes to the same variable, correct? > > Just checking... Correct. -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - 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/