Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757391AbYJNLFz (ORCPT ); Tue, 14 Oct 2008 07:05:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756636AbYJNLFo (ORCPT ); Tue, 14 Oct 2008 07:05:44 -0400 Received: from moog.chdir.org ([88.191.42.160]:35593 "EHLO moog.chdir.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756623AbYJNLFn (ORCPT ); Tue, 14 Oct 2008 07:05:43 -0400 Date: Tue, 14 Oct 2008 13:05:39 +0200 From: Nicolas Bareil To: FUJITA Tomonori Cc: nico@chdir.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: Re: USB problem on x86_64: nommu_map_single() issue? Message-ID: <20081014110539.GA2997@sd-5945.dedibox.fr> References: <20081014072045.GA1252@sd-5945.dedibox.fr> <200810141148.48220.oliver@neukum.org> <20081014104500.GB1252@sd-5945.dedibox.fr> <20081014200016H.fujita.tomonori@lab.ntt.co.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081014200016H.fujita.tomonori@lab.ntt.co.jp> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1371 Lines: 28 On Tue, Oct 14, 2008 at 08:00:09PM +0900, FUJITA Tomonori wrote: > > > Is this a regression? Did it work on earlier kernels? > > > > Yes this is a regression: USB works in 2.6.26.x with (almost) the same configuration. > > With old kernels, you can find something like the following line in > the boot log? > > PCI-DMA: Using software bounce buffering for IO (SWIOTLB) Indeed, I have this line: Oct 14 12:46:29 brew kernel: [ 0.004000] Calgary: detecting Calgary via BIOS EBDA area Oct 14 12:46:29 brew kernel: [ 0.004000] Calgary: Unable to locate Rio Grande table in EBDA - bailing! Oct 14 12:46:29 brew kernel: [ 0.004000] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) Oct 14 12:46:29 brew kernel: [ 0.004000] Placing software IO TLB between 0x4000000 - 0x8000000 Oct 14 12:46:29 brew kernel: [ 0.004000] Memory: 4055544k/4980736k available (2225k kernel code, 138092k reserved, 1079k data, 392k init) Oct 14 12:46:29 brew kernel: [ 0.004000] CPA: page pool initialized 1 of 1 pages preallocated The full kern.log is available here: http://chdir.org/~nbareil/kern.log-2.6.26-1 Thanks! -- 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/