From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758161AbYBIAga (ORCPT ); Fri, 8 Feb 2008 19:36:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755260AbYBIAgV (ORCPT ); Fri, 8 Feb 2008 19:36:21 -0500 Received: from relay2.sgi.com ([192.48.171.30]:46629 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755014AbYBIAgU (ORCPT ); Fri, 8 Feb 2008 19:36:20 -0500 Date: Fri, 8 Feb 2008 16:36:16 -0800 (PST) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Roland Dreier cc: andrea@qumranet.com, a.p.zijlstra@chello.nl, izike@qumranet.com, steiner@sgi.com, linux-kernel@vger.kernel.org, avi@qumranet.com, linux-mm@kvack.org, daniel.blueman@quadrics.com, Robin Holt , general@lists.openfabrics.org, Andrew Morton , kvm-devel@lists.sourceforge.net, Rik van Riel Subject: Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6 In-Reply-To: Message-ID: References: <20080208220616.089936205@sgi.com> <20080208142315.7fe4b95e.akpm@linux-foundation.org> <20080208233636.GG26564@sgi.com> <20080208234302.GH26564@sgi.com> <20080208155641.2258ad2c.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 8 Feb 2008, Roland Dreier wrote: > That would of course work -- dumb adapters would just always fail, > which might be inefficient. Hmmmm.. that means we need something that actually pins pages for good so that the VM can avoid reclaiming it and so that page migration can avoid trying to migrate them. Something like yet another page flag. Ccing Rik.