From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752810AbYGTSoS (ORCPT ); Sun, 20 Jul 2008 14:44:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751133AbYGTSoH (ORCPT ); Sun, 20 Jul 2008 14:44:07 -0400 Received: from casper.infradead.org ([85.118.1.10]:44244 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751087AbYGTSoF (ORCPT ); Sun, 20 Jul 2008 14:44:05 -0400 Date: Sun, 20 Jul 2008 11:43:58 -0700 From: Arjan van de Ven To: Stefan Richter Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: dma_alloc_coherent() on PPC32: physical addresses above 2G possible? Message-ID: <20080720114358.6c88e048@infradead.org> In-Reply-To: <488385A7.4010509@s5r6.in-berlin.de> References: <488385A7.4010509@s5r6.in-berlin.de> Organization: Intel X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.11; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 20 Jul 2008 20:36:23 +0200 Stefan Richter wrote: > PS: I don't want to set the DMA mask of this device to > DMA_31BIT_MASK because that would be detrimental to other functions > of the device. It's a TI TSB43AB22A FireWire controller. Hi, just want to mention that you can set the coherent mask separately from the generic mask... is that sufficient for your load? (you can even set it just for this allocation..) -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org