From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 2 Jul 2001 04:09:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 2 Jul 2001 04:08:53 -0400 Received: from fe000.worldonline.dk ([212.54.64.194]:10503 "HELO fe000.worldonline.dk") by vger.kernel.org with SMTP id ; Mon, 2 Jul 2001 04:08:42 -0400 Date: Mon, 2 Jul 2001 10:09:19 +0200 From: Jens Axboe To: Alan Cox Cc: Jes Sorensen , "David S. Miller" , "MEHTA,HIREN (A-SanJose,ex1)" , "'linux-kernel@vger.kernel.org'" Subject: Re: (reposting) how to get DMA'able memory within 4GB on 64-bit m achi ne Message-ID: <20010702100919.B600@suse.de> In-Reply-To: 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 Thu, Jun 28 2001, Alan Cox wrote: > We will also have to address those cards that have 28/30/31 bit limits (yes > they exist) when we start doing direct I/O for 32bits of memory - one reason > I'm very wary of Jens patch ever being in 2.4 The patch can handle those too, FWIW. The fact that it just sets 32-bit limit now is unrelated, and it is also just set for devices that have been sort-of tested :-) Anyhoo, my point is that the bounce limit is variable on a page granularity. -- Jens Axboe