Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030598AbXBMAek (ORCPT ); Mon, 12 Feb 2007 19:34:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030599AbXBMAek (ORCPT ); Mon, 12 Feb 2007 19:34:40 -0500 Received: from omx1-ext.sgi.com ([192.48.179.11]:39657 "EHLO omx1.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1030598AbXBMAej (ORCPT ); Mon, 12 Feb 2007 19:34:39 -0500 Date: Mon, 12 Feb 2007 16:34:07 -0800 (PST) From: Christoph Lameter To: Andi Kleen cc: Vojtech Pavlik , Jiri Bohac , linux-kernel@vger.kernel.org, ssouhlal@freebsd.org, arjan@infradead.org, tglx@linutronix.de, johnstul@us.ibm.com, zippel@linux-m68k.org, andrea@suse.de Subject: Re: [patch 4/9] Remove the TSC synchronization on SMP machines In-Reply-To: <200702020814.27378.ak@suse.de> Message-ID: References: <20070201095952.589234000@jet.suse.cz> <20070201131715.GM21755@dwarf.suse.cz> <20070201151654.GA20385@suse.cz> <200702020814.27378.ak@suse.de> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 681 Lines: 15 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? Programs expects gettimeofday() etc to be monotonic. Its going to a big surprise if that is not working anymore. - 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/