From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 3 May 2001 11:45:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 3 May 2001 11:45:03 -0400 Received: from [63.95.87.168] ([63.95.87.168]:11269 "HELO xi.linuxpower.cx") by vger.kernel.org with SMTP id ; Thu, 3 May 2001 11:44:54 -0400 Date: Thu, 3 May 2001 11:44:52 -0400 From: Gregory Maxwell To: Keith Owens Cc: Kai Henningsen , linux-kernel@vger.kernel.org Subject: Re: X15 alpha release: as fast as TUX but in user space (fwd) Message-ID: <20010503114452.B26337@xi.linuxpower.cx> In-Reply-To: <80BTbB7Hw-B@khms.westfalen.de> <13656.988875876@kao2.melbourne.sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.8i In-Reply-To: <13656.988875876@kao2.melbourne.sgi.com>; from kaos@ocs.com.au on Thu, May 03, 2001 at 05:44:36PM +1000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 03, 2001 at 05:44:36PM +1000, Keith Owens wrote: > On 03 May 2001 09:13:00 +0200, > kaih@khms.westfalen.de (Kai Henningsen) wrote: > >pavel@suse.cz (Pavel Machek) wrote on 30.04.01 in <20010430104231.C3294@bug.ucw.cz>: > > > >> PS: Hmm, how do you do timewarp for just one userland appliation with > >> this installed? > > > >1. What on earth for? > > Y10K testing :) > > >2. How do you do it today, and why wouldn't that work? > > LD_PRELOAD on a library that overrides gettimeofday(). I can see no > reason why that would not continue to work. What would stop working > are timewarp modules that intercepted the syscall at the kernel level > instead of user space level. It would just have to be done a differnt way.. For those applications you make a differnt magic page and redirect them there.