Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751107Ab0DJMtS (ORCPT ); Sat, 10 Apr 2010 08:49:18 -0400 Received: from buzzloop.caiaq.de ([212.112.241.133]:36210 "EHLO buzzloop.caiaq.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750838Ab0DJMtR (ORCPT ); Sat, 10 Apr 2010 08:49:17 -0400 Date: Sat, 10 Apr 2010 14:49:12 +0200 From: Daniel Mack To: Pedro Ribeiro Cc: Alan Stern , Robert Hancock , linux-kernel@vger.kernel.org, akpm@linux-foundation.org, Greg KH , alsa-devel@alsa-project.org, linux-usb@vger.kernel.org Subject: Re: USB transfer_buffer allocations on 64bit systems Message-ID: <20100410124912.GP30801@buzzloop.caiaq.de> References: <20100409180942.GK30801@buzzloop.caiaq.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1087 Lines: 27 On Fri, Apr 09, 2010 at 07:19:22PM +0100, Pedro Ribeiro wrote: > On 9 April 2010 19:09, Daniel Mack wrote: > > On Fri, Apr 09, 2010 at 12:01:27PM -0400, Alan Stern wrote: > >> I don't see anything suspicious. ?The transfer_buffer addresses repeat > >> every 32 URBs, and the DMA addresses cycle almost entirely uniformly > >> from 0x20000000 to 0x23ffffff in units of 0x2000 (there are a few gaps > >> where the interval is a little bigger). > > > > The DMA pointers do indeed look sane. I wanted to take a deeper look at > > this and set up a 64bit system today. However, I fail to see the problem > > here. Pedro, how much RAM does your machine have installed? > > > > Daniel > > > > > > It has 4 GB. Upgraded my machine now to 4GB, but I still can't reproduce this bug. Pedro, can you send your config, please? Daniel -- 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/