From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757555AbYBIBY7 (ORCPT ); Fri, 8 Feb 2008 20:24:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754325AbYBIBYu (ORCPT ); Fri, 8 Feb 2008 20:24:50 -0500 Received: from host36-195-149-62.serverdedicati.aruba.it ([62.149.195.36]:46214 "EHLO mx.cpushare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752310AbYBIBYt (ORCPT ); Fri, 8 Feb 2008 20:24:49 -0500 Date: Sat, 9 Feb 2008 02:24:46 +0100 From: Andrea Arcangeli To: Christoph Lameter Cc: Roland Dreier , 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 Message-ID: <20080209012446.GB7051@v2.random> References: <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 Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 08, 2008 at 04:36:16PM -0800, Christoph Lameter wrote: > 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. What's wrong with pinning with the page count like now? Dumb adapters would simply not register themself in the mmu notifier list no? > > Ccing Rik. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrea Arcangeli Subject: Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6 Date: Sat, 9 Feb 2008 02:24:46 +0100 Message-ID: <20080209012446.GB7051@v2.random> References: <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 Cc: Rik van Riel , a.p.zijlstra@chello.nl, izike@qumranet.com, Roland Dreier , 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 To: Christoph Lameter Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: general-bounces@lists.openfabrics.org Errors-To: general-bounces@lists.openfabrics.org List-Id: kvm.vger.kernel.org On Fri, Feb 08, 2008 at 04:36:16PM -0800, Christoph Lameter wrote: > 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. What's wrong with pinning with the page count like now? Dumb adapters would simply not register themself in the mmu notifier list no? > > Ccing Rik. From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 9 Feb 2008 02:24:46 +0100 From: Andrea Arcangeli Subject: Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6 Message-ID: <20080209012446.GB7051@v2.random> References: <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 Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Roland Dreier , 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 List-ID: On Fri, Feb 08, 2008 at 04:36:16PM -0800, Christoph Lameter wrote: > 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. What's wrong with pinning with the page count like now? Dumb adapters would simply not register themself in the mmu notifier list no? > > Ccing Rik. -- 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