From patchwork Sun Dec 21 09:40:23 2008 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Herrenschmidt X-Patchwork-Id: 15128 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [127.0.0.1]) by ozlabs.org (Postfix) with ESMTP id DFCC8DDF06 for ; Sun, 21 Dec 2008 20:41:19 +1100 (EST) X-Original-To: linuxppc-dev@ozlabs.org Delivered-To: linuxppc-dev@ozlabs.org Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 8EE7BDDD04 for ; Sun, 21 Dec 2008 20:40:29 +1100 (EST) Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.13.8) with ESMTP id mBL9eOIP018450; Sun, 21 Dec 2008 03:40:25 -0600 Subject: Re: Commits added to powerpc.git next and master branches From: Benjamin Herrenschmidt To: Grant Likely In-Reply-To: <1229851937.13001.57.camel@pasglop> References: <18765.58426.49381.986612@cargo.ozlabs.ibm.com> <1229851937.13001.57.camel@pasglop> Date: Sun, 21 Dec 2008 20:40:23 +1100 Message-Id: <1229852423.13001.58.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.24.2 Cc: linuxppc-dev@ozlabs.org, Paul Mackerras X-BeenThere: linuxppc-dev@ozlabs.org X-Mailman-Version: 2.1.11 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@ozlabs.org On Sun, 2008-12-21 at 20:32 +1100, Benjamin Herrenschmidt wrote: > On Sun, 2008-12-21 at 02:07 -0700, Grant Likely wrote: > > Hey Paul, > > > > Top of your -next tree fails with a stack overflow on the MPC5200 when > > attempting to mount an NFS rootfs (log below). I haven't had a chance > > to bisect yet, but I'm posting this in case someone has already seen > > and solved this. > > >From the NIP & LR values, it looks like it could be my fault. > > MPC5200 is a 603 core right ? Looks like a brown paper bag for me. Try this: Index: linux-work/arch/powerpc/mm/hash_low_32.S =================================================================== --- linux-work.orig/arch/powerpc/mm/hash_low_32.S 2008-12-21 20:38:10.000000000 +1100 +++ linux-work/arch/powerpc/mm/hash_low_32.S 2008-12-21 20:38:14.000000000 +1100 @@ -709,3 +709,4 @@ _GLOBAL(_tlbia) tlbia sync #endif /* CONFIG_SMP */ + blr