From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14051 invoked by alias); 2 Feb 2011 20:04:27 -0000 Received: (qmail 14042 invoked by uid 22791); 2 Feb 2011 20:04:26 -0000 X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from usmamail.tilera.com (HELO USMAMAIL.TILERA.COM) (206.83.70.70) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 02 Feb 2011 20:04:21 +0000 Received: from [10.7.0.51] (10.9.0.13) by USMAExch2.tad.internal.tilera.com (10.3.0.33) with Microsoft SMTP Server id 14.0.694.0; Wed, 2 Feb 2011 15:04:18 -0500 Message-ID: <4D49B8C2.3030409@tilera.com> Date: Wed, 02 Feb 2011 20:04:00 -0000 From: Jeff Kenton User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7 MIME-Version: 1.0 To: kevin diggs CC: Subject: Re: hail marry (booting PowerMac 8600) References: In-Reply-To: Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-help-owner@gcc.gnu.org X-SW-Source: 2011-02/txt/msg00042.txt.bz2 On 02/02/2011 02:41 PM, kevin diggs wrote: > Hi, > > I have narrowed this down to one file, drivers/scsi/mesh.c which is > the host adapter driver for the internal SCSI controller on a > PowerMac8600. If I compile this file with 4.1.2 and everything else > with 4.3.5 then the beast will boot. > > Anyone have any thoughts on what changed (something optimizery I would > guess?) between 4.1.2 and 4.3.5? strict-aliasing? Try building with -fnostrict-aliasing and see if it helps. > Thanks! > > kevin > > P.S.: MAN I'M FREAKIN' FREEZIN! > > On Mon, Jan 24, 2011 at 10:15 PM, kevin diggs wrote: >> Hi, >> >> If I enable SMP then I can get a 4.3.5 compiled kernel to boot. I also >> tried 4.2.4 with no success (no SMP). 4.1.2 WILL boot (again no SMP). >> >> Is there anyone here that knows more than I do (which means they know >> something - I know nothing) about the intricacies of Linux kernel >> building, especially on PowerPC. >> >> Thanks! >> >> kevin >>