From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755410AbXIXOYS (ORCPT ); Mon, 24 Sep 2007 10:24:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752010AbXIXOYH (ORCPT ); Mon, 24 Sep 2007 10:24:07 -0400 Received: from www.osadl.org ([213.239.205.134]:45032 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750858AbXIXOYG (ORCPT ); Mon, 24 Sep 2007 10:24:06 -0400 Subject: Re: 2.6.23-rc4-mm1 and -rc6-mm1: boot failure on HP nx6325, related to clockevents From: Thomas Gleixner To: "Rafael J. Wysocki" Cc: Andi Kleen , Andrew Morton , LKML , Ingo Molnar In-Reply-To: <200709241552.32567.rjw@sisk.pl> References: <200709231257.12213.rjw@sisk.pl> <200709241457.40669.rjw@sisk.pl> <1190639101.4035.185.camel@chaos> <200709241552.32567.rjw@sisk.pl> Content-Type: text/plain Date: Mon, 24 Sep 2007 16:23:51 +0200 Message-Id: <1190643831.4035.209.camel@chaos> Mime-Version: 1.0 X-Mailer: Evolution 2.12.0 (2.12.0-3.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2007-09-24 at 15:52 +0200, Rafael J. Wysocki wrote: > > > > So I really wonder, why noacpitimer on the kernel command line makes any > > > > difference. I'm confused. > > > > > > \metoo > > > > > > Well, it was probably read as "noacpi". :-) > > > > Hmm, ACPI is in the log all over the place. > > Well, "noacpi" seems to be a synonym for "pci=noacpi". > > Anyway, it causes acpi_disable_pci() to be executed, which according to > Documentation/kernel-parameters.txt means "Do not use ACPI for IRQ routing or > for PCI scanning" (it works like this on x86_64 too, although the doc says it's > x86_32-specific). Hrm. The local apic timer calibration does not use anything which is related to interrupts, but if we use the local APIC timer we switch off PIT. Can you boot Linus latest (w/o hrt patches) and add "apicmaintimer" to the kernel command line please ? > And yes, it matches "noacpiwhatever" in the command line with "noacpi". Sigh. Urgh. tglx