From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752445AbXCZMaH (ORCPT ); Mon, 26 Mar 2007 08:30:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752443AbXCZMaH (ORCPT ); Mon, 26 Mar 2007 08:30:07 -0400 Received: from www.osadl.org ([213.239.205.134]:36245 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752440AbXCZMaF (ORCPT ); Mon, 26 Mar 2007 08:30:05 -0400 Subject: Re: Linux 2.6.21-rc5 From: Thomas Gleixner To: Bob Tracy Cc: Linus Torvalds , Linux Kernel Mailing List , johnstul@us.ibm.com In-Reply-To: <20070326122526.BD45DDBA1@gherkin.frus.com> References: <20070326122526.BD45DDBA1@gherkin.frus.com> Content-Type: text/plain Date: Mon, 26 Mar 2007 14:30:02 +0200 Message-Id: <1174912202.4182.34.camel@chaos> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-1.fc6) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2007-03-26 at 07:25 -0500, Bob Tracy wrote: > Thomas Gleixner wrote: > > This fix from John Stultz is still missing: > > > > http://lkml.org/lkml/2007/3/22/287 > > > > It's in Andrews queue already and waits to be sent to you. > > In summary, that fix is a workaround to allow the acpi_pm clocksource > to be selected instead of the pit clocksource, thereby allowing my > Dell laptop with the PIIX4 bug to boot. Other apic, clocksource, etc. > patches that were included in -rc5 fixed the problem that caused the > boot process to hang when the pit clocksource was selected, as I > suspected would be the case :-). Ah. Ok > Per John's message in the above URL, while the fix is no longer needed > for allowing the laptop to boot, it's probably still "a good thing" to > allow a better clocksource to be selected. Yes. The read three times pmtimer is faster and more reliable than the PIT. tglx