From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from oss.sgi.com (localhost [127.0.0.1]) by oss.sgi.com (8.12.5/8.12.5) with ESMTP id g6B2VqRw032606 for ; Wed, 10 Jul 2002 19:31:52 -0700 Received: (from majordomo@localhost) by oss.sgi.com (8.12.5/8.12.3/Submit) id g6B2Vqd4032605 for linux-mips-outgoing; Wed, 10 Jul 2002 19:31:52 -0700 X-Authentication-Warning: oss.sgi.com: majordomo set sender to owner-linux-mips@oss.sgi.com using -f Received: from dea.linux-mips.net (shaft16-f88.dialo.tiscali.de [62.246.16.88]) by oss.sgi.com (8.12.5/8.12.5) with SMTP id g6B2VkRw032596 for ; Wed, 10 Jul 2002 19:31:48 -0700 Received: (from ralf@localhost) by dea.linux-mips.net (8.11.6/8.11.6) id g6B2a2S08906; Thu, 11 Jul 2002 04:36:02 +0200 Date: Thu, 11 Jul 2002 04:36:02 +0200 From: Ralf Baechle To: "H. J. Lu" Cc: Jun Sun , linux-mips@oss.sgi.com Subject: Re: Malta crashes on the latest 2.4 kernel Message-ID: <20020711043601.B3207@dea.linux-mips.net> References: <3D2CBF73.50001@mvista.com> <20020710164900.A28911@lucon.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020710164900.A28911@lucon.org>; from hjl@lucon.org on Wed, Jul 10, 2002 at 04:49:00PM -0700 X-Accept-Language: de,en,fr X-Spam-Status: No, hits=-4.4 required=5.0 tests=IN_REP_TO version=2.20 X-Spam-Level: Sender: owner-linux-mips@oss.sgi.com Precedence: bulk On Wed, Jul 10, 2002 at 04:49:00PM -0700, H. J. Lu wrote: > > See the crash scene. Anybody knows the cause? It is strange to see the > > reserved exception. > > > > The 2.4 kernel checked out around Jul 4 09:28 PDT works fine on Malta. Jun's patch certainly is correct for some MIPS32 CPUs; others may get away without this one. Previous experience with pipeline hazards on MIPS processors has shown that at times hazards may change even between minor revisions of a CPU; documentation isn't always trustworthy about such minor details of the pipeline. Ralf