From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263060AbVGIBAQ (ORCPT ); Fri, 8 Jul 2005 21:00:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263061AbVGIA6B (ORCPT ); Fri, 8 Jul 2005 20:58:01 -0400 Received: from ns.suse.de ([195.135.220.2]:686 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S263060AbVGIA4i (ORCPT ); Fri, 8 Jul 2005 20:56:38 -0400 Date: Sat, 9 Jul 2005 02:56:38 +0200 From: Andi Kleen To: Jon Schindler Cc: ak@suse.de, linux-kernel@vger.kernel.org Subject: Re: USB storage does not work with 3GB of RAM, but does with 2G of RAM Message-ID: <20050709005638.GE21330@wotan.suse.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 08, 2005 at 08:49:12PM -0400, Jon Schindler wrote: > Hi Andi, > > As you suggested, removing ehci_hcd (using rmmod ehci_hcd) allows the USB > storage device to work. So, to answer your question, yes, the ohci_hcd > driver does work with 3GB's of RAM. Still, knoppix 3.9 IS able to work > with both ehci and 3GB's of RAM, so it still sounds like it's a software > problem, not an nvidia hardware issue. Knoppix is 32bit I guess. The 32bit kernel will do a lot of DMA only in the first 800-900MB (lowmem) -Andi