From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932961AbXBPHXg (ORCPT ); Fri, 16 Feb 2007 02:23:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932985AbXBPHXg (ORCPT ); Fri, 16 Feb 2007 02:23:36 -0500 Received: from gw.goop.org ([64.81.55.164]:45095 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932961AbXBPHXf (ORCPT ); Fri, 16 Feb 2007 02:23:35 -0500 Message-ID: <45D55BF7.30704@goop.org> Date: Thu, 15 Feb 2007 23:23:35 -0800 From: Jeremy Fitzhardinge User-Agent: Thunderbird 1.5.0.9 (X11/20070212) MIME-Version: 1.0 To: Andrew Morton CC: Andi Kleen , linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, xen-devel@lists.xensource.com, Chris Wright , Zachary Amsden , Ian Pratt , Christian Limpach , Christoph Lameter Subject: Re: [patch 11/21] Xen-paravirt: Add apply_to_page_range() which applies a function to a pte range. References: <20070216022449.739760547@goop.org> <20070216022531.344125142@goop.org> <20070215223727.6819f962.akpm@linux-foundation.org> <45D55805.908@goop.org> <20070215231936.073fadd3.akpm@linux-foundation.org> In-Reply-To: <20070215231936.073fadd3.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > I guess your pte-at-a-time walker could be quite simply implemented underneath > the smaps pmd-at-a-time walker. > Yes, converting should be pretty simple. There aren't many users in Xen, but they are moderately performance critical (fork, exec and exit), so using batching would be good. J