Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261870AbVAQPi6 (ORCPT ); Mon, 17 Jan 2005 10:38:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261869AbVAQPi4 (ORCPT ); Mon, 17 Jan 2005 10:38:56 -0500 Received: from waldorf.cs.uni-dortmund.de ([129.217.4.42]:49283 "EHLO waldorf.cs.uni-dortmund.de") by vger.kernel.org with ESMTP id S261826AbVAQPia (ORCPT ); Mon, 17 Jan 2005 10:38:30 -0500 Date: Mon, 17 Jan 2005 16:38:28 +0100 From: Christoph Pleger To: linux-kernel@vger.kernel.org Subject: IDE PCI DMA Message-Id: <20050117163828.545228e4.Christoph.Pleger@uni-dortmund.de> Organization: Universitaet Dortmund X-Mailer: Sylpheed version 1.0.0 (GTK+ 1.2.10; sparc-sun-solaris2.7) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 629 Lines: 17 Hello, I compiled a 2.4.28 kernel with modular IDE support. Running that kernel on a machine and looking into /proc/ide/hda/settings shows that DMA is not used for that disk, although I had chosen "use PCI DMA by default when available". When a kernel with built-in IDE support is run, DMA for hda is activated. Why is it not activated in case of a module? Kind regards Christoph - 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/