From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946138AbXD3XsQ (ORCPT ); Mon, 30 Apr 2007 19:48:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946130AbXD3XsQ (ORCPT ); Mon, 30 Apr 2007 19:48:16 -0400 Received: from gateway-1237.mvista.com ([63.81.120.158]:16172 "EHLO gateway-1237.mvista.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946138AbXD3XsP (ORCPT ); Mon, 30 Apr 2007 19:48:15 -0400 Subject: Re: [BUG] 2.6.21: Kernel won't boot with either/both of CONFIG_NO_HZ, CONFIG_HIGH_RES_TIMERS From: Daniel Walker To: Mark Lord Cc: Linux Kernel , tglx@linutronix.de, Linus Torvalds In-Reply-To: <46367D7E.6060502@rtr.ca> References: <46364EBC.5050804@rtr.ca> <46364F5A.2030208@rtr.ca> <463653A3.5040606@rtr.ca> <46367D7E.6060502@rtr.ca> Content-Type: text/plain Date: Mon, 30 Apr 2007 16:46:38 -0700 Message-Id: <1177976798.12796.286.camel@imap.mvista.com> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-2.fc6) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2007-04-30 at 19:36 -0400, Mark Lord wrote: > Mark Lord wrote: > > Mark Lord wrote: > >> Mark Lord wrote: > >>> I have a new notebook (Dell Inspiron 9400) with Core2-Duo T7400 @ > >>> 2.1Ghz. > >>> When either/both of CONFIG_NO_HZ, CONFIG_HIGH_RES_TIMERS is used, > >>> the 2.6.21 kernel hangs on startup just after printing one/both of > >>> these: > >> .. > >> > >> That's a hard hang, by the way. No magic sysrq key or anything. > > Well, in case this helps. If I take the exact same .config that fails, > and add *only* this to it, it then boots just fine. > > CONFIG_DETECT_SOFTLOCKUP=y > > Thomas G., are you there?? Hmm, Do you have a boot log ? I didn't see one in any of the last emails. Daniel