Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755707Ab0DITeM (ORCPT ); Fri, 9 Apr 2010 15:34:12 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:60928 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754327Ab0DITeH (ORCPT ); Fri, 9 Apr 2010 15:34:07 -0400 Date: Fri, 9 Apr 2010 15:34:06 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Pedro Ribeiro cc: Daniel Mack , Robert Hancock , , , Greg KH , , Subject: Re: USB transfer_buffer allocations on 64bit systems In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 598 Lines: 17 On Fri, 9 Apr 2010, Pedro Ribeiro wrote: > > 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? > It has 4 GB. That means DMA mapping cannot be the cause of the problem. :-( Alan Stern -- 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/