From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755047AbYAIUXP (ORCPT ); Wed, 9 Jan 2008 15:23:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752482AbYAIUXA (ORCPT ); Wed, 9 Jan 2008 15:23:00 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:50736 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752301AbYAIUW7 (ORCPT ); Wed, 9 Jan 2008 15:22:59 -0500 Date: Wed, 9 Jan 2008 20:22:54 +0000 From: Christoph Hellwig To: Benjamin Herrenschmidt Cc: Christoph Hellwig , Pavel Roskin , Dave Airlie , Pekka Paalanen , linux-kernel@vger.kernel.org, jbeulich@novell.com Subject: Re: Replacement for page fault notifiers? Message-ID: <20080109202254.GA5279@infradead.org> References: <20080108210638.5c9e093a@daedalus.pq.iki.fi> <20080108203235.GA772@infradead.org> <21d7e9970801081413n307ab07aq462a9fff014143ae@mail.gmail.com> <1199838407.6734.83.camel@pasglop> <1199902724.8050.11.camel@dv> <20080109182157.GA32754@infradead.org> <1199908703.6734.133.camel@pasglop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1199908703.6734.133.camel@pasglop> User-Agent: Mutt/1.5.17 (2007-11-01) X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 10, 2008 at 06:58:23AM +1100, Benjamin Herrenschmidt wrote: > It's a sane thing to do, Christoph, I don't think it's a unreasonable > request to put the hooks back in. As said a few times before there's simply no way we're going to put exactly that crap back. For one the patch removed a whole lot of crud from the kprobes code that simply isn't going to come back just because there are some pagefault notifiers. Second the page fault notifiers were horribly implemented and quite inefficient. And third we're not going to put something in just for out of tree code. Please submit the mmiotrace for 2.6.25 and we'll find some way to make it work.