From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751359AbWEZKIf (ORCPT ); Fri, 26 May 2006 06:08:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751368AbWEZKIf (ORCPT ); Fri, 26 May 2006 06:08:35 -0400 Received: from tirith.ics.muni.cz ([147.251.4.36]:6293 "EHLO tirith.ics.muni.cz") by vger.kernel.org with ESMTP id S1751359AbWEZKIe (ORCPT ); Fri, 26 May 2006 06:08:34 -0400 Date: Fri, 26 May 2006 12:08:30 +0200 From: Jan Kasprzak To: Robert Hancock Cc: linux-kernel Subject: Re: 3ware 7500 not working in 2.6.16.18, 2.6.17-rc5 Message-ID: <20060526100830.GU20917@fi.muni.cz> References: <6gn8D-4AV-13@gated-at.bofh.it> <447661E2.5020103@shaw.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <447661E2.5020103@shaw.ca> User-Agent: Mutt/1.4.1i X-Muni-Spam-TestIP: 147.251.48.3 X-Muni-Envelope-From: kas@fi.muni.cz X-Muni-Virus-Test: Clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Robert Hancock wrote: : It looks like this controller only supports 32-bit DMA addresses. For : some reason it's trying to feed in an SG list with addresses over 4GB, : which fails. I'd think this configuration should work, but maybe not? It worked in 2.6.15-rc2. : It looks like you have IOMMU turned off - I think you'll really want to : turn that on with that much RAM (12GB). Even if this case did work as : well as it could, without IOMMU the kernel would have to bounce-buffer : the data below 4GB which will kill performance. Yes, I had problems with IOMMU in the past, so I used to run the kernel with IOMMU turned off. Now I have turned it back on, and so far it is working correctly. However, I think the 3ware driver should work even with iommu=off (as it used to in 2.6.15-rc2). -Yenya -- | Jan "Yenya" Kasprzak | | GPG: ID 1024/D3498839 Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E | | http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ | > I will never go to meetings again because I think face to face meetings < > are the biggest waste of time you can ever have. --Linus Torvalds <