From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161808AbXDYSKT (ORCPT ); Wed, 25 Apr 2007 14:10:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161864AbXDYSKT (ORCPT ); Wed, 25 Apr 2007 14:10:19 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:41407 "EHLO e36.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161808AbXDYSKR (ORCPT ); Wed, 25 Apr 2007 14:10:17 -0400 Subject: Re: [3/3] 2.6.21-rc7: known regressions (v2) From: john stultz To: Andrew Morton Cc: Adrian Bunk , Linus Torvalds , Linux Kernel Mailing List , Guilherme Schroeder , Thomas Gleixner , Ingo Molnar , Mikael Pettersson , ak@suse.de, linux-pm@lists.linux-foundation.org, Len Brown In-Reply-To: <20070425040605.6d6b4a82.akpm@linux-foundation.org> References: <20070423214909.GD3468@stusta.de> <20070425040605.6d6b4a82.akpm@linux-foundation.org> Content-Type: text/plain Date: Wed, 25 Apr 2007 11:08:52 -0700 Message-Id: <1177524532.6401.17.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2007-04-25 at 04:06 -0700, Andrew Morton wrote: > On Mon, 23 Apr 2007 23:49:09 +0200 Adrian Bunk wrote: > > > This email lists some known regressions in Linus' tree compared to 2.6.20. > > > > If you find your name in the Cc header, you are either submitter of one > > of the bugs, maintainer of an affectected subsystem or driver, a patch > > of you caused a breakage or I'm considering you in any other way > > possibly involved with one or more of these issues. > > > > Due to the huge amount of recipients, please trim the Cc when answering. > > > > > > Subject : HPET enabled freeze my machine at boot > > workaround: clocksource=acpi_pm > > References : http://lkml.org/lkml/2007/4/19/370 > > Submitter : Guilherme Schroeder > > Caused-By : Thomas Gleixner > > commit 5d8b34fdcb384161552d01ee8f34af5ff11f9684 > > Handled-By : John Stultz > > Status : problem is being debugged > > > > > > Subject : acpi_pm clocksource loses time on x86-64 > > References : http://lkml.org/lkml/2007/4/17/143 > > Submitter : Mikael Pettersson > > Handled-By : John Stultz > > Status : problem is being debugged > > > > > > Subject : suspend to disk hangs (CONFIG_NO_HZ) > > References : http://lkml.org/lkml/2007/3/25/217 > > Submitter : Jeff Chua > > Status : unknown > > That's still rather a lot of bustage from the timekeeping changes. Is > anything really happening here or have we all given up? The ACPI PM one is *really* odd as its the same clocksource driver on both arches. I had Mikael cut out the clocksource frequency adjustments, and confirmed both i386 and x86_64 are using the same base freq (confirmed via printks). It almost seems like when booting x86_64 the ACPI PM counter is running slowly! Len: Have you ever heard of such a thing? It seems quite unlikely... WRT the HPET freeze issue, I'm still digging there. In that case it appears the HPET isn't counting, so timekeeping just stops. I was thinking it might be HRT messing w/ the wrong HPET registers, but so far that hasn't shaken out. I'll spend some more time on these today and see if we get any further. thanks -john