Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764497AbXFAUVB (ORCPT ); Fri, 1 Jun 2007 16:21:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763052AbXFAUUz (ORCPT ); Fri, 1 Jun 2007 16:20:55 -0400 Received: from mx1.redhat.com ([66.187.233.31]:50027 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762524AbXFAUUy (ORCPT ); Fri, 1 Jun 2007 16:20:54 -0400 Message-ID: <46607F96.7060200@redhat.com> Date: Fri, 01 Jun 2007 16:20:38 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Thunderbird 1.5.0.7 (X11/20061008) MIME-Version: 1.0 To: Andi Kleen CC: Andrew Vasquez , Christoph Hellwig , linux-kernel Subject: Re: [PATCH] quiet down swiotlb warnings References: <466057B1.9090309@redhat.com> <20070601181225.GA16460@infradead.org> <20070601193703.GI7217@one.firstfloor.org> <466075D1.8080807@redhat.com> <20070601194734.GJ7217@one.firstfloor.org> <20070601200049.GK12143@andrew-vasquezs-computer.local> <20070601201444.GK7217@one.firstfloor.org> In-Reply-To: <20070601201444.GK7217@one.firstfloor.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 912 Lines: 22 Andi Kleen wrote: > On Fri, Jun 01, 2007 at 01:00:49PM -0700, Andrew Vasquez wrote: >> yes, the card can support 64bit DMA transfers. but in this case the >> 'required' DMA mask returned from dma_get_required_mask() states that a >> 32bit mask would suffice. > > That's a bug in the kernel then that needs to be fixed. Find out > why it does that and change it. Don't fix the symptoms, fix the root cause. The system in question only has 2GB of memory. Why would it need to do 64 bit DMA? -- Politics is the struggle between those who want to make their country the best in the world, and those who believe it already is. Each group calls the other unpatriotic. - 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/