From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932313AbWEAXNQ (ORCPT ); Mon, 1 May 2006 19:13:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932314AbWEAXNQ (ORCPT ); Mon, 1 May 2006 19:13:16 -0400 Received: from mail-in-04.arcor-online.net ([151.189.21.44]:3266 "EHLO mail-in-04.arcor-online.net") by vger.kernel.org with ESMTP id S932313AbWEAXNP (ORCPT ); Mon, 1 May 2006 19:13:15 -0400 In-Reply-To: References: <1906950392f7ef8c7d07.1145913778@eng-12.pathscale.com> <4B05D10C-407E-46A5-848F-0897D1E6D1CD@kernel.crashing.org> Mime-Version: 1.0 (Apple Message framework v749.3) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <114102B4-FBCB-4A5A-B986-80D4A730DD91@kernel.crashing.org> Cc: "Bryan O'Sullivan" , openib-general@openib.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: 7bit From: Segher Boessenkool Subject: Re: [PATCH 2 of 13] ipath - set up 32-bit DMA mask if 64-bit setup fails Date: Tue, 2 May 2006 01:13:12 +0200 To: Roland Dreier X-Mailer: Apple Mail (2.749.3) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Segher> PowerPC with U3 or U4 northbridge, i.e. Maple or PowerMac > Segher> G5 systems. If the IOMMU (DART) is disabled, we have a > Segher> 32-bit only DMA mask. The DART will be disabled by > Segher> default if there is 2GB or less of memory (as it isn't > Segher> needed then). > > OK, thanks. I was not aware of that situation. > > However, I suspect that PathScale has a different situation in mind, > considering that their driver isn't even buildable for that > platform ;) Well (a previous version of) that patch came from me, draw your own conclusions :-) And it builds just fine -- what is the problem you're thinking of? Segher