From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262214AbVFSAX6 (ORCPT ); Sat, 18 Jun 2005 20:23:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262213AbVFSAX5 (ORCPT ); Sat, 18 Jun 2005 20:23:57 -0400 Received: from mail.metronet.co.uk ([213.162.97.75]:21442 "EHLO mail.metronet.co.uk") by vger.kernel.org with ESMTP id S262212AbVFSAXb (ORCPT ); Sat, 18 Jun 2005 20:23:31 -0400 From: Alistair John Strachan To: Andi Kleen Subject: Re: [2.6.12] x86-64 IO-APIC + timer doesn't work II + PATCH Date: Sun, 19 Jun 2005 01:23:50 +0100 User-Agent: KMail/1.8.1 Cc: linux-kernel@vger.kernel.org References: <200506181452.52921.s0348365@sms.ed.ac.uk> <20050618235229.GA35248@muc.de> In-Reply-To: <20050618235229.GA35248@muc.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200506190123.50316.s0348365@sms.ed.ac.uk> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andi, On Sunday 19 Jun 2005 00:52, Andi Kleen wrote: [snip] > > It's a bit of a shot into the dark, but could you test if the following > patch helps? The A64 is quite aggressive in reordering instructions and it > might be breaking __delay() and cause it to return early. > Firstly, I apologise in the delay getting back to you. I tried the patch, but the machine still hung in the same way with the options apic apic=verbose (I don't know if the first "apic" is required, or whether this is an invalid combination of parameters, but it hung in the same way). > If not I would check what a failing case and a working case output for > > Calibrating delay loop... 3940.35 BogoMIPS (lpj=1970176) > > Does the failing kernel output something different here? I'll get back to you about this, but see my other email (a successfully booted apic=debug machine). Thanks for investigating this. -- Cheers, Alistair. personal: alistair()devzero!co!uk university: s0348365()sms!ed!ac!uk student: CS/CSim Undergraduate contact: 1F2 55 South Clerk Street, Edinburgh. EH8 9PP.