From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752682AbXJACYq (ORCPT ); Sun, 30 Sep 2007 22:24:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751510AbXJACYi (ORCPT ); Sun, 30 Sep 2007 22:24:38 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:43842 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751496AbXJACYi (ORCPT ); Sun, 30 Sep 2007 22:24:38 -0400 Date: Sun, 30 Sep 2007 19:24:19 -0700 From: Andrew Morton To: Frans Pop Cc: "Udo A. Steinberg" , linux-kernel@vger.kernel.org, Thomas Gleixner Subject: Re: [2.6.23-rc8-mm2] System hangs (loops?) during boot Message-Id: <20070930192419.c8b6e96b.akpm@linux-foundation.org> In-Reply-To: <200710010207.34430.elendil@planet.nl> References: <200709282225.21530.elendil@planet.nl> <200709302350.30612.elendil@planet.nl> <20071001000037.475473bd@laptop.hypervisor.org> <200710010207.34430.elendil@planet.nl> X-Mailer: Sylpheed 2.4.1 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 1 Oct 2007 02:07:33 +0200 Frans Pop wrote: > > That excludes all the extra stuff in -mm and should give us a good hint > > whether HPET is really at fault. > > The system does boot with rc8 + hrt1. > > Andrew: any suggestions on how to trace the "real" culprit for the hang? Not really. Ordinarily one could move hpet-force-enable-on-ich34.patch to start-of-series, then verify that mainline+hpet-force-enable-on-ich34.patch works correctly, then just bisect all the other patches. But tht doesn't work because hpet-force-enable-on-ich34.patch has a dependency on other patches in the hrt-related patch series, and it could be that the bug which you've exposed is already in mainline anyway. If you had a minimal, standalone hpet-force-enable-on-ich34.patch against mainline then you could test that against mainline. If that also failed then you could git-bisect mainline, applying hpet-force-enable-on-ich34.patch each time (I've done that before). But this assumes that you're searching for a regression in minaline. It may never have worked.