From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757928AbXIYUqo (ORCPT ); Tue, 25 Sep 2007 16:46:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751354AbXIYUqg (ORCPT ); Tue, 25 Sep 2007 16:46:36 -0400 Received: from www.osadl.org ([213.239.205.134]:54672 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750851AbXIYUqg (ORCPT ); Tue, 25 Sep 2007 16:46:36 -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: <200709252207.02532.rjw@sisk.pl> References: <200709231257.12213.rjw@sisk.pl> <200709251516.58405.rjw@sisk.pl> <1190726273.4035.331.camel@chaos> <200709252207.02532.rjw@sisk.pl> Content-Type: text/plain Date: Tue, 25 Sep 2007 22:46:32 +0200 Message-Id: <1190753192.17409.62.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 Rafael, On Tue, 2007-09-25 at 22:07 +0200, Rafael J. Wysocki wrote: > On Tuesday, 25 September 2007 15:17, Thomas Gleixner wrote: > > On Tue, 2007-09-25 at 15:16 +0200, Rafael J. Wysocki wrote: > [--snip--] > > > > I start to get desperate. Below is a patch, which moves the apic timer > > disable check after the calibration routine. Can you please apply on top > > of -hrt and add "noapictimer" to the command line ? Does it boot ? > > 2.6.23-rc7 with patch-2.6.23-rc7-hrt1.patch and the patch below applied boots > with noapictimer and doesn't boot without it. That was expected. I explicitly asked to add "noapictimer" to the kernel command line. Ok, so we ruled out the apic timer calibration routine. I did not expect that this would be the culprit, but with "dark screen" as the only debug info, I need to resort to small steps. Can you please send me the output of /proc/timer_list of 2.6.23-rc7-hrt1 after booting with "noapictimer" ? I'm a bit confused by your earlier confirmation, that mainline w/o the -hrt patches boots fine, when you add "apicmaintimer" to the kernel command line. "apicmaintimer" stops the PIT like we do in -hrt and we just use the local APIC timer for everything. Can you please retest and confirm that this is correct ? Is the 32 bit kernel working on that box ? Thanks for your patience. tglx PS: I just sent out the "disable APIC timer for AMD C1E boxen" patch. We debugged this half a year ago on a nx6325, but I completely forgot about that. The explanation from AMD was sensible, but your "apicmaintimer" works statement is contradictory.