From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] skge: add quirk to limit DMA Date: Tue, 05 Oct 2010 15:09:41 -0700 (PDT) Message-ID: <20101005.150941.267944554.davem@davemloft.net> References: <20100929092515.GA6804@redhat.com> <20101005.001800.13732127.davem@davemloft.net> <20101006065845.5759dbeb@s6510> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: sgruszka@redhat.com, netdev@vger.kernel.org, luya@fedoraproject.org To: shemminger@vyatta.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:47182 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754258Ab0JEWJU (ORCPT ); Tue, 5 Oct 2010 18:09:20 -0400 In-Reply-To: <20101006065845.5759dbeb@s6510> Sender: netdev-owner@vger.kernel.org List-ID: From: Stephen Hemminger Date: Wed, 6 Oct 2010 06:58:45 +0900 > On Tue, 05 Oct 2010 00:18:00 -0700 (PDT) > David Miller wrote: > >> From: Stanislaw Gruszka >> Date: Wed, 29 Sep 2010 11:33:23 +0200 >> >> > Skge devices installed on some Gigabyte motherboards are not able to >> > perform 64 dma correctly due to board PCI implementation, so limit >> > DMA to 32bit if such boards are detected. >> > >> > Bug was reported here: >> > https://bugzilla.redhat.com/show_bug.cgi?id=447489 >> > >> > Signed-off-by: Stanislaw Gruszka >> > Tested-by: Luya Tshimbalanga >> >> Stephen? Can I get an ACK or some kind of other status on this? > > I was hoping to find the hardware somewhere to dig deeper into > this. But until I know more please apply the patch. There are > two possibilities that still exist, 1) it is true for all devices > on this motherboard (in which cases it should be a PCI quirk), > 2) it is a driver bug. The test was going to be putting a skge > pci card in a slot on the MB. Ok, thanks Stephen, I'll apply his patch for now.