From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755582AbbDXOao (ORCPT <rfc822;w@1wt.eu>);
	Fri, 24 Apr 2015 10:30:44 -0400
Received: from resqmta-po-05v.sys.comcast.net ([96.114.154.164]:35028 "EHLO
	resqmta-po-05v.sys.comcast.net" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1754034AbbDXOan (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 24 Apr 2015 10:30:43 -0400
Date: Fri, 24 Apr 2015 09:30:40 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
X-X-Sender: cl@gentwo.org
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Jerome Glisse <j.glisse@gmail.com>, 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 <cabuschardt@nvidia.com>,
        Mark Hairgrove <mhairgrove@nvidia.com>,
        Geoffrey Gerfin <ggerfin@nvidia.com>,
        John McKenna <jmckenna@nvidia.com>, akpm@linux-foundation.org
Subject: Re: Interacting with coherent memory on external devices
In-Reply-To: <20150423185240.GO5561@linux.vnet.ibm.com>
Message-ID: <alpine.DEB.2.11.1504240929340.7582@gentwo.org>
References: <20150421214445.GA29093@linux.vnet.ibm.com> <alpine.DEB.2.11.1504211839120.6294@gentwo.org> <1429663372.27410.75.camel@kernel.crashing.org> <20150422005757.GP5561@linux.vnet.ibm.com> <1429664686.27410.84.camel@kernel.crashing.org>
 <alpine.DEB.2.11.1504221020160.24979@gentwo.org> <20150422163135.GA4062@gmail.com> <alpine.DEB.2.11.1504221206080.25607@gentwo.org> <1429756456.4915.22.camel@kernel.crashing.org> <alpine.DEB.2.11.1504230925250.32297@gentwo.org>
 <20150423185240.GO5561@linux.vnet.ibm.com>
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Thu, 23 Apr 2015, Paul E. McKenney wrote:

> If by "entire industry" you mean everyone who might want to use hardware
> acceleration, for example, including mechanical computer-aided design,
> I am skeptical.

The industry designs GPUs with super fast special ram and accellerators
with special ram designed to do fast searches and you think you can demand page
that stuff in from the main processor?