From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755160AbaCCVml (ORCPT ); Mon, 3 Mar 2014 16:42:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48841 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753010AbaCCVmj (ORCPT ); Mon, 3 Mar 2014 16:42:39 -0500 Date: Mon, 3 Mar 2014 16:41:44 -0500 From: Don Zickus To: Andi Kleen Cc: Peter Zijlstra , Joe Mario , Davidlohr Bueso , acme@ghostprotocols.net, LKML , jolsa@redhat.com, fowles@inreach.com, eranian@google.com, Arnaldo Carvalho de Melo , David Ahern , Frederic Weisbecker , Mike Galbraith , Paul Mackerras , Richard Fowles Subject: Re: [PATCH 08/19] perf c2c: Shared data analyser Message-ID: <20140303214144.GM25953@redhat.com> References: <87lhwvawc4.fsf@tassilo.jf.intel.com> <20140228194642.GM25953@redhat.com> <1393621411.2899.39.camel@buesod1.americas.hpqcorp.net> <20140303150531.GZ25953@redhat.com> <20140303172316.GA22728@two.firstfloor.org> <5314C4C4.1020304@redhat.com> <20140303184117.GL9987@twins.programming.kicks-ass.net> <20140303185819.GB22728@two.firstfloor.org> <20140303203257.GI25953@redhat.com> <20140303213836.GD22728@two.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140303213836.GD22728@two.firstfloor.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 03, 2014 at 10:38:36PM +0100, Andi Kleen wrote: > > Thoughts on how to determine which load is a potential store? I agree > > every store needs to load the cacheline, but I wasn't sure if there was an > > approach that could be applied to determine anything useful. > > HITM covers both load and stores. > > But it may have some skid. The main advantage of the address is that > it is skidless. I guess I don't follow, how does having a skidless address help me when I don't have any stores (on a Westmere for example)? Cheers, Don