From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Howorth Subject: Re: sata_via bus errors fixed? Date: Mon, 31 Jan 2011 10:50:03 +0000 Message-ID: <4D4693DB.4070009@mrc-lmb.cam.ac.uk> References: <4D3DA387.8080301@mrc-lmb.cam.ac.uk> <20110124170432.GH27510@htj.dyndns.org> <4D3EA771.3070206@mrc-lmb.cam.ac.uk> <20110125105049.GQ27510@htj.dyndns.org> <4D3FF0D9.5040006@mrc-lmb.cam.ac.uk> <20110126101119.GE12520@htj.dyndns.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from ppsw-50.csi.cam.ac.uk ([131.111.8.150]:35403 "EHLO ppsw-50.csi.cam.ac.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752548Ab1AaKuF (ORCPT ); Mon, 31 Jan 2011 05:50:05 -0500 In-Reply-To: <20110126101119.GE12520@htj.dyndns.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: linux-ide@vger.kernel.org Tejun Heo wrote: > There are plenty of howtos on building kernel. It takes some time to > get used to but once you get a hang of it there's nothing difficult > about it. Hmm, I've finally managed to get the compilation to work often enough to run my tests but I don't think I'll be taking up kernel compiling as a hobby :( > The best way would be finding out a workload which doesn't take too > much time but reliably triggers the issue on a problematic kernel. That would be booting then :) The dmesg reliably has or does not have the error messages. >> Tonight I plan to compile that kernel, which should confirm that I >> understand how to do it, and then I'll disable the VIA FIFO workaround >> as you suggest and see what happens. OK. So the results are now in: (1) stock SUSE HEAD/11.2 (2.6.37) - works fine with no problem (2) SUSE 2.6.37 with the 'magic patch' commented out - shows the problem (3) stock updated SUSE 11.2 (2.6.31.14) - shows the problem (4) stock SUSE 11.2 with the 'magic patch' added (2.6.31.5) - works fine with no problem I think that's fairly indicative that the 'magic patch' is able to cure my problem with a VT 6241A controller and a Samsung HD103SJ drive. One thing I still need to investigate is why Ubuntu 10.04 was showing the problem, but perhaps I never got as far as updating the kernel after installing it. (AFAIK as installed it is 2.6.31, whilst the current update is 2.6.32-28 which I think should have the patch) Thanks for your help. Dave