From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanislaw Gruszka Subject: Re: [RFC] skge: limit DMA to 32 bit Date: Wed, 22 Sep 2010 09:34:01 +0200 Message-ID: <20100922073400.GA9942@redhat.com> References: <20100921071518.GA9081@redhat.com> <20100921080253.3d89d60a@nehalam> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: Stephen Hemminger Return-path: Received: from mx1.redhat.com ([209.132.183.28]:51937 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751780Ab0IVHc4 (ORCPT ); Wed, 22 Sep 2010 03:32:56 -0400 Content-Disposition: inline In-Reply-To: <20100921080253.3d89d60a@nehalam> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, Sep 21, 2010 at 08:02:53AM -0700, Stephen Hemminger wrote: > > Is 32bit DMA limit for every skge device acceptable patch? > > No. The device does support 64 bit DMA, the problem is a crap implementation > of the device the motherboard. Therefore a PCI quirk or module parameter > is a better solution. Ok, I will use dmi_check_system() to recognize broken board and limit DMA address space when detected. Thanks Stanislaw