From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-f171.google.com (mail-ie0-f171.google.com [209.85.223.171]) by kanga.kvack.org (Postfix) with ESMTP id 5F8306B006E for ; Mon, 27 Apr 2015 12:48:18 -0400 (EDT) Received: by iedfl3 with SMTP id fl3so147951228ied.1 for ; Mon, 27 Apr 2015 09:48:18 -0700 (PDT) Received: from resqmta-ch2-12v.sys.comcast.net (resqmta-ch2-12v.sys.comcast.net. [2001:558:fe21:29:69:252:207:44]) by mx.google.com with ESMTPS id q18si6155661igt.48.2015.04.27.09.48.17 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 27 Apr 2015 09:48:17 -0700 (PDT) Date: Mon, 27 Apr 2015 11:48:16 -0500 (CDT) From: Christoph Lameter Subject: Re: Interacting with coherent memory on external devices In-Reply-To: <553E6405.1060007@redhat.com> Message-ID: References: <20150424150829.GA3840@gmail.com> <20150424164325.GD3840@gmail.com> <20150424171957.GE3840@gmail.com> <20150424192859.GF3840@gmail.com> <20150425114633.GI5561@linux.vnet.ibm.com> <20150427154728.GA26980@gmail.com> <553E6405.1060007@redhat.com> Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Rik van Riel Cc: Jerome Glisse , "Paul E. McKenney" , Benjamin Herrenschmidt , linux-kernel@vger.kernel.org, linux-mm@kvack.org, jglisse@redhat.com, mgorman@suse.de, aarcange@redhat.com, airlied@redhat.com, aneesh.kumar@linux.vnet.ibm.com, Cameron Buschardt , Mark Hairgrove , Geoffrey Gerfin , John McKenna , akpm@linux-foundation.org On Mon, 27 Apr 2015, Rik van Riel wrote: > Why would we want to avoid the sane approach that makes this thing > work with the fewest required changes to core code? Becaus new ZONEs are a pretty invasive change to the memory management and because there are other ways to handle references to device specific memory. -- 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