Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423171AbXBBHV3 (ORCPT ); Fri, 2 Feb 2007 02:21:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423177AbXBBHV3 (ORCPT ); Fri, 2 Feb 2007 02:21:29 -0500 Received: from ns.suse.de ([195.135.220.2]:44754 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423172AbXBBHV1 (ORCPT ); Fri, 2 Feb 2007 02:21:27 -0500 From: Andi Kleen To: Vojtech Pavlik Subject: Re: [patch 4/9] Remove the TSC synchronization on SMP machines Date: Fri, 2 Feb 2007 08:14:27 +0100 User-Agent: KMail/1.9.5 Cc: 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 References: <20070201095952.589234000@jet.suse.cz> <20070201131715.GM21755@dwarf.suse.cz> <20070201151654.GA20385@suse.cz> In-Reply-To: <20070201151654.GA20385@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200702020814.27378.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 748 Lines: 18 On Thursday 01 February 2007 16:16, Vojtech Pavlik wrote: > It might even make sense to desycnhronize the TSCs on such (AMD) > machines on purpose, so that applications that rely on TSC break > immediately and not after some time when the error becomes too large. They won't because they're normally single threaded (and most people still use single core systems anyways) I've threatened to just disable RDTSC for ring 3 before, but it'll likely never happen because too many programs use it. -Andi - 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/