From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e36.co.us.ibm.com (e36.co.us.ibm.com [32.97.110.154]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e36.co.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 5F0EAB7170 for ; Wed, 17 Nov 2010 12:51:11 +1100 (EST) Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e36.co.us.ibm.com (8.14.4/8.13.1) with ESMTP id oAH1kdkf023473 for ; Tue, 16 Nov 2010 18:46:39 -0700 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id oAH1p48L252812 for ; Tue, 16 Nov 2010 18:51:04 -0700 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id oAH1p46I011606 for ; Tue, 16 Nov 2010 18:51:04 -0700 Subject: Re: Can't boot benh/powerpc.git kernel From: Jim Keniston To: Michael Neuling In-Reply-To: <17075.1289877977@neuling.org> References: <1289418856.2983.23.camel@localhost> <1289426817.2147.1403.camel@pasglop> <1289520464.4752.12.camel@localhost> <17075.1289877977@neuling.org> Content-Type: text/plain; charset="UTF-8" Date: Tue, 16 Nov 2010 17:51:03 -0800 Message-ID: <1289958663.3028.175.camel@localhost> Mime-Version: 1.0 Cc: linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2010-11-16 at 14:26 +1100, Michael Neuling wrote: > In message <1289520464.4752.12.camel@localhost> you wrote: > > On Thu, 2010-11-11 at 09:06 +1100, Benjamin Herrenschmidt wrote: > > > On Wed, 2010-11-10 at 11:54 -0800, Jim Keniston wrote: > > > > I got Ben's linux/kernel/git/benh/powerpc.git source and built it > > > > (.config file attached*). It hangs on boot. When I boot it with > > > > loglevel=8, its last words are: > > > > > > First, please try with Linus upstream. The "master" branch in my git > > > tree is quite stale, and my next and merge branch are too at the moment > > > as I'm still travelling. All our current stuff was merged during the > > > last merge window so there's nothing "new" for you to pickup in my tree > > > at the moment :-) > > > > > > If the problem still occurs, I'll have a look next week. > > > > > > Cheers, > > > Ben. > > > > I built from Linus's git tree, and that kernel doesn't boot, either. > > (It doesn't hang, but rather panics during boot. I can provide a > > console log if you like.) > > Yes please. > > Linus' tree with pseries_defconfig boots fine for me on my POWER5 box. > > > v2.6.36 and v2.6.37-rc1 boot fine for me. I'll post my nvram-related > > patches against v2.6.37-rc1. > > So it's broken between 37-rc1 and whereever you grabbed Linus tree. > That's a fairly small window. Can you bisect it? I was apparently comparing apples to oranges. Given the fatal configuration options (DEBUG_SLAB and/or DEBUG_PAGEALLOC) 2.6.37-rc1 fails the same as a more recent snapshot of Linus's tree. I updated my view today, and it still fails to boot with DEBUG_SLAB and/or DEBUG_PAGEALLOC, and boots OK without them. It also fails to boot with SLUB and SLUB_DEBUG enabled, even with SLUB_DEBUG_ON disabled. Ben has access to my system, and will look at it in a few days. Jim > > Mikey > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev