Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750723AbWJ0V6r (ORCPT ); Fri, 27 Oct 2006 17:58:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750732AbWJ0V6r (ORCPT ); Fri, 27 Oct 2006 17:58:47 -0400 Received: from ug-out-1314.google.com ([66.249.92.169]:1028 "EHLO ug-out-1314.google.com") by vger.kernel.org with ESMTP id S1750723AbWJ0V6q (ORCPT ); Fri, 27 Oct 2006 17:58:46 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:date:from:to:subject:message-id:mail-followup-to:references:mime-version:content-type:content-disposition:content-transfer-encoding:in-reply-to:user-agent; b=oApg+GxOky6tkzR5meqzl3wiiRL6E60v3bydM7Y81ClzctQqEe7ONNyLFGccQEQzXRwZN1HdjF5OTdJSHxH7dMsFV37hUhGf5ZUFiQG3b1K7AkbwdchkGHUfDMjDK5l5sE27QZw2J8VL1qDODjDAETrjorhxmH8PI0jUqiLLCzE= Date: Fri, 27 Oct 2006 22:58:43 +0100 From: Friedrich =?iso-8859-1?Q?G=F6pel?= To: linux-kernel Subject: Re: AMD X2 unsynced TSC fix? Message-ID: <20061027215843.GA11614@localhost.ntlworld.com> Mail-Followup-To: linux-kernel References: <1161969308.27225.120.camel@mindpipe> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1161969308.27225.120.camel@mindpipe> User-Agent: mutt-ng/devel-r804 (Linux) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 931 Lines: 30 On 13:15 Fri 27 Oct , Lee Revell wrote: > Someone recently pointed out to me that a Windows "CPU driver update" > supplied by AMD fixes the unsynced TSC problem on dual core AMD64 > systems. > ... > What are the chances of Linux getting a similar fix? > > Lee > Hi, This post earlier seems to suggest someone is indeed working on something similar, if I'm understanding this correctly: http://lkml.org/lkml/2006/10/27/27 quote: > Jiri Bohac (jbohac@suse.cz) is currently working on a new timekeeping code for > x86-64 that takes a significantly different approach that allows for > precise and fast gettimeofday even on CPUs with unsynchronized TSCs. Cheers, Friedrich G?pel - 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/