From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 07 Sep 2005 00:59:53 +0100 (BST) Received: from 202-47-55-78.adsl.gil.com.au ([IPv6:::ffff:202.47.55.78]:36019 "EHLO longlandclan.hopto.org") by linux-mips.org with ESMTP id ; Wed, 7 Sep 2005 00:58:43 +0100 Received: (qmail 29360 invoked by uid 210); 7 Sep 2005 10:05:28 +1000 Received: from 10.0.0.251 by www (envelope-from , uid 201) with qmail-scanner-1.25st (spamassassin: 3.0.2. perlscan: 1.25st. Clear:RC:1(10.0.0.251):. Processed in 0.124962 secs); 07 Sep 2005 00:05:28 -0000 Received: from beast.redhatters.home (HELO ?10.0.0.251?) (10.0.0.251) by 192.168.5.1 with SMTP; 7 Sep 2005 10:05:27 +1000 Message-ID: <431E2ECF.1050501@gentoo.org> Date: Wed, 07 Sep 2005 10:05:35 +1000 From: Stuart Longland Organization: Gentoo Foundation User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050716) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-mips@linux-mips.org Subject: Indy R4600 on Linux 2.6 -- possible cache issue? X-Enigmail-Version: 0.91.0.0 OpenPGP: id=63264AB9; url=http://dev.gentoo.org/~redhatter/gpgkey.asc Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigF5FF44C2CBFAA49ADC82EF21" Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 8883 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: redhatter@gentoo.org Precedence: bulk X-list: linux-mips This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigF5FF44C2CBFAA49ADC82EF21 Content-Type: multipart/mixed; boundary="------------010900070008010907040109" This is a multi-part message in MIME format. --------------010900070008010907040109 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi All, I've been tinkering with my Indy, trying to coax the contankerous machine into booting Linux 2.6, until last night, without success. For the record, the Indy's specs are as follows: CPU: R4600 SC rev2.0 @ 133MHz RAM: 256MB HDD: 9.0GB IBM SCSI Video: 8-bit Newport (XL) It successfully boots Linux 2.4 without incident... even in 64-bit mode. ---------------------------------8<------------------------------------- > Linux indy 2.4.29-mipscvs-20050130 #2 Tue Feb 8 19:44:48 EST 2005 mips64 R4600 V2.0 FPU V2.0 SGI Indy GNU/Linux > 09:36:06 up 8:02, 0 users, load average: 0.02, 0.01, 0.00 --------------------------------->8------------------------------------- The tests below have been conducted using the stock ip22_defconfig with debugging options enabled and CPU set to R4x00. Previously, it would either not boot at all, or it would just get past starting userland before hard locking (as in, no SysRq joy, and no response from pressing the power button). My current kernel, made from a CVS HEAD snapshot last Sunday (4th September) with cache disabled is the first one I've made which boots consistently, although it's _very_ slow. I'm wondering if we could be hitting a caching issue with the R4600 CPU? I also suspect the wd33c93 SCSI driver has a role to play in the instability, as I'm getting a lot of warnings from it, they all look something like the following ---------------------------------8<------------------------------------- > [timestamp] drivers/scsi/wd33c93.c:77? spin_is_locked on uninitialised spinlock 893ce340. --------------------------------->8------------------------------------- The exact line number scrolls too quickly to read. (I'm not using serial console presently -- I might try that later though) As I say, the system boots, and in fact, I had the machine successfully running e2fsck on its root partition (8GB) last night with this kernel. After 2 hours or so, it managed to get 75% though the filesystem check -- I don't know beyond that, as it was approaching 1:00AM and I needed sleep. ;-) It's running extremely slow though, so I'd like to discover what's causing these crashes. The crashes happen on most boots with cache enabled. Occasionally, I'll get lucky, and the machine will boot on its own, but it's like 1 in every 5 boots or so. I'll see if I can get a dump out of this box, but as I say, it gets through a file system check and activating swap, that's further than I've ever got this machine running with cache enabled. -- ____ _ Stuart Longland (a.k.a Redhatter) / _ \ ___ ___ __| |__ __ __ Gentoo Linux/MIPS Cobalt and Docs - (_) \ / \ ; \(__ __)/ \ / \ Developer \ // O _| / /\ \ | | | /\ | /\ | / / \ /__| / \ \ | | | \/ | \/ | (___/ \____/|_; |_| \_/ \__/ \__/ http://dev.gentoo.org/~redhatter --------------010900070008010907040109 Content-Type: application/gzip; name="debug.config.gz" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="debug.config.gz" H4sICPUqHkMCA2RlYnVnLmNvbmZpZwCMPFtz2zaz7/0VnPThS2aaRjfTcmf8AJKgBIs3A6As 54Wj2KytE1nSSHJa//uzIEURIAGqD3HM3QWwXCz2hqV//+13C70ft2/L4+ppuV5/WC/5Jt8v j/mz9bb8mVtP283fq5e/rOft5n9HK39eHWFEsNq8/2v9zPebfG39yveH1XbzlzX40/6zP/z6 ttodnn4dvg56vaveTW8E9Pw9t1i+syzbGvT/6g3/6t9YAv3b77+5ceSTSRaShN1+/AaA3y13 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