From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f42.google.com (mail-qg0-f42.google.com [209.85.192.42]) by kanga.kvack.org (Postfix) with ESMTP id D8E71900015 for ; Tue, 21 Apr 2015 20:58:03 -0400 (EDT) Received: by qgdy78 with SMTP id y78so76587661qgd.0 for ; Tue, 21 Apr 2015 17:58:03 -0700 (PDT) Received: from e39.co.us.ibm.com (e39.co.us.ibm.com. [32.97.110.160]) by mx.google.com with ESMTPS id 70si3625934qgb.16.2015.04.21.17.58.02 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 21 Apr 2015 17:58:02 -0700 (PDT) Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 21 Apr 2015 18:58:01 -0600 Received: from b03cxnp08028.gho.boulder.ibm.com (b03cxnp08028.gho.boulder.ibm.com [9.17.130.20]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id 27EF419D803F for ; Tue, 21 Apr 2015 18:49:04 -0600 (MDT) Received: from d03av05.boulder.ibm.com (d03av05.boulder.ibm.com [9.17.195.85]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t3M0vfnw39649288 for ; Tue, 21 Apr 2015 17:57:41 -0700 Received: from d03av05.boulder.ibm.com (localhost [127.0.0.1]) by d03av05.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t3M0vxAF021715 for ; Tue, 21 Apr 2015 18:57:59 -0600 Date: Tue, 21 Apr 2015 17:57:57 -0700 From: "Paul E. McKenney" Subject: Re: Interacting with coherent memory on external devices Message-ID: <20150422005757.GP5561@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20150421214445.GA29093@linux.vnet.ibm.com> <1429663372.27410.75.camel@kernel.crashing.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1429663372.27410.75.camel@kernel.crashing.org> Sender: owner-linux-mm@kvack.org List-ID: To: Benjamin Herrenschmidt Cc: Christoph Lameter , linux-kernel@vger.kernel.org, linux-mm@kvack.org, jglisse@redhat.com, mgorman@suse.de, aarcange@redhat.com, riel@redhat.com, airlied@redhat.com, aneesh.kumar@linux.vnet.ibm.com, Cameron Buschardt , Mark Hairgrove , Geoffrey Gerfin , John McKenna , akpm@linux-foundation.org On Wed, Apr 22, 2015 at 10:42:52AM +1000, Benjamin Herrenschmidt wrote: > On Tue, 2015-04-21 at 18:49 -0500, Christoph Lameter wrote: > > On Tue, 21 Apr 2015, Paul E. McKenney wrote: > > > > > Thoughts? > > > > Use DAX for memory instead of the other approaches? That way it is > > explicitly clear what information is put on the CAPI device. > > Care to elaborate on what DAX is ? I would like to know as well. My first attempt to Google got me nothing but Star Trek. Is DAX the persistent-memory topic covered here? https://lwn.net/Articles/591779/ https://lwn.net/Articles/610174/ Ben will correct me if I am wrong, but I do not believe that we are looking for persistent memory in this case. Thanx, Paul -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org