From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965424AbXCGSfd (ORCPT ); Wed, 7 Mar 2007 13:35:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932287AbXCGSfd (ORCPT ); Wed, 7 Mar 2007 13:35:33 -0500 Received: from gw.goop.org ([64.81.55.164]:53007 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932771AbXCGSfc (ORCPT ); Wed, 7 Mar 2007 13:35:32 -0500 Message-ID: <45EF05F0.7090700@goop.org> Date: Wed, 07 Mar 2007 10:35:28 -0800 From: Jeremy Fitzhardinge User-Agent: Thunderbird 1.5.0.9 (X11/20070212) MIME-Version: 1.0 To: Ingo Molnar CC: tglx@linutronix.de, Dan Hecht , Zachary Amsden , akpm@linux-foundation.org, ak@suse.de, Virtualization Mailing List , Rusty Russell , LKML , john stultz Subject: Re: + stupid-hack-to-make-mainline-build.patch added to -mm tree References: <45EDD82F.90204@vmware.com> <1173225182.24738.507.camel@localhost.localdomain> <45EE0628.1080108@goop.org> <45EE08E8.2020008@vmware.com> <1173228544.24738.514.camel@localhost.localdomain> <45EE0D10.7070807@vmware.com> <1173230305.24738.529.camel@localhost.localdomain> <45EE1EA3.90803@vmware.com> <1173256666.24738.576.camel@localhost.localdomain> <45EEF966.6060902@goop.org> <20070307174957.GA31371@elte.hu> In-Reply-To: <20070307174957.GA31371@elte.hu> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar wrote: > ugh. Please take it from me: i've watched the Linux time code walk its > long, rocky 10+ years road. One of the first mistakes was when we made > the TSC the center of the i386-time universe. (incidentally, it was me > who did the first steps of that, as a rookie kernel hacker) We got cured > out of that in v2.6.19, v2.6.20 and v2.6.21. Granted, Xen is only at the > beginning of that same road. Meet in another 10 years? ;) Yep, the tsc has myriad problems; for Xen its the best of a bad lot. Unfortunately in 10 years no clearly better alternative has appeared; maybe in 10 years there will be one. It might even be the tsc. J