Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752910AbXFYXRe (ORCPT ); Mon, 25 Jun 2007 19:17:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751930AbXFYXR2 (ORCPT ); Mon, 25 Jun 2007 19:17:28 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:54994 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751672AbXFYXR1 (ORCPT ); Mon, 25 Jun 2007 19:17:27 -0400 Message-ID: <46804CFC.4000702@pobox.com> Date: Mon, 25 Jun 2007 19:17:16 -0400 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.12 (X11/20070530) MIME-Version: 1.0 To: Jay Cliburn CC: Chris Snook , "Jay L. T. Cornwall" , Luca Tettamanti , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH] atl1: disable 64bit DMA References: <467B12CA.5060405@esuna.co.uk> <467BE118.4090308@redhat.com> <467BE4F1.7040308@esuna.co.uk> <467D0EB0.9030100@esuna.co.uk> <20070624125957.2e27820c@osprey.hogchain.net> <467ED4A8.4080500@esuna.co.uk> <20070624164519.04f215b8@osprey.hogchain.net> <467FB237.2030703@esuna.co.uk> <467FB844.6060702@bellsouth.net> <20070625211855.GA19275@dreamland.darkstar.lan> <46803557.50805@redhat.com> <468038FC.6090302@esuna.co.uk> <46803A40.4070009@redhat.com> <20070625180039.4f083846@osprey.hogchain.net> In-Reply-To: <20070625180039.4f083846@osprey.hogchain.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.9 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1701 Lines: 46 Jay Cliburn wrote: > On Mon, 25 Jun 2007 17:57:20 -0400 > Chris Snook wrote: > >> Jay L. T. Cornwall wrote: >>> Chris Snook wrote: >>> >>>> What boards have we seen this on? It's quite possible this is: >>> I can reproduce on an Asus P5K with a Core 2 Duo E6600. >>> >>> lspci identifies the controller as: >>> 02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit >>> Ethernet Adapter (rev b0) >>> >>> dmesg notes the PCI-DMA mapping implementation: >>> PCI-DMA: Using software bounce buffering for IO (SWIOTLB) >>> >> I had a hunch this was on Intel. I'd rather just disable this when >> swiotlb is in use, unless we get more complaints. It's probably >> ultimately a BIOS quirk anyway. > > So far we have reports from both camps: > > Asus M2N8-VMX (AM2): 1 report of lockup > http://sourceforge.net/mailarchive/forum.php?thread_name=46780384.063603.26165%40m12-15.163.com&forum_name=atl1-devel > > Asus P5K (LGA775): 2 reports of lockups > http://sourceforge.net/mailarchive/forum.php?thread_name=467E7E34.4010603%40gmail.com&forum_name=atl1-devel > http://lkml.org/lkml/2007/6/25/107 > > The common denominator in these reports is 4GB RAM. Although its possible this device doesn't really support 64-bit, it's more likely that this is a platform problem of some sort, or a driver bug of some sort. In the driver, maybe it has a problem when you -cross- a 4GB boundary, which is not uncommon. Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/