Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161021AbXBMGkd (ORCPT ); Tue, 13 Feb 2007 01:40:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161026AbXBMGkd (ORCPT ); Tue, 13 Feb 2007 01:40:33 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:55863 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161021AbXBMGkc (ORCPT ); Tue, 13 Feb 2007 01:40:32 -0500 Subject: Re: [patch 4/9] Remove the TSC synchronization on SMP machines From: Arjan van de Ven To: Christoph Lameter Cc: Andi Kleen , Vojtech Pavlik , Jiri Bohac , linux-kernel@vger.kernel.org, ssouhlal@freebsd.org, tglx@linutronix.de, johnstul@us.ibm.com, zippel@linux-m68k.org, andrea@suse.de In-Reply-To: References: <20070201095952.589234000@jet.suse.cz> <20070201131715.GM21755@dwarf.suse.cz> <20070201151654.GA20385@suse.cz> <200702020814.27378.ak@suse.de> Content-Type: text/plain Organization: Intel International BV Date: Tue, 13 Feb 2007 07:40:08 +0100 Message-Id: <1171348808.12771.19.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.2.1 (2.8.2.1-3.fc6) Content-Transfer-Encoding: 7bit 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 X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 963 Lines: 23 On Mon, 2007-02-12 at 16:34 -0800, Christoph Lameter wrote: > On Fri, 2 Feb 2007, Andi Kleen wrote: > > > I've threatened to just disable RDTSC for ring 3 before, but it'll likely > > never happen because too many programs use it. > > Those programs are aware that they are fiddling around with low level > material but with this patchset we are going to have a non > monotonic time subsystem? no quite the opposite. gettimeofday() currently is NOT monotonic unfortunately. With this patchseries it actually has a better chance of becoming that... -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/