Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266349AbUJIAuk (ORCPT ); Fri, 8 Oct 2004 20:50:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266352AbUJIAuk (ORCPT ); Fri, 8 Oct 2004 20:50:40 -0400 Received: from rproxy.gmail.com ([64.233.170.197]:57914 "EHLO mproxy.gmail.com") by vger.kernel.org with ESMTP id S266349AbUJIAuj (ORCPT ); Fri, 8 Oct 2004 20:50:39 -0400 Message-ID: <58cb370e04100817508fe62d0@mail.gmail.com> Date: Sat, 9 Oct 2004 02:50:38 +0200 From: Bartlomiej Zolnierkiewicz Reply-To: Bartlomiej Zolnierkiewicz To: Ken Moffat Subject: Re: Problem with ide=nodma Cc: linux-kernel@vger.kernel.org In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit References: <58cb370e04100817353254b8cd@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1291 Lines: 30 On Sat, 9 Oct 2004 01:44:57 +0100 (BST), Ken Moffat wrote: > On Sat, 9 Oct 2004, Bartlomiej Zolnierkiewicz wrote: > > > On Sat, 9 Oct 2004 00:32:01 +0100 (BST), Ken Moffat > > wrote: > > > Hi, > > > > > > I'm trying a sii 0680 disk controller at the moment, as a possible > > > workaround for some via southbridge problems (this is on a ppc which > > > isn't yet supported by the official kernels, but it has been stable here > > > since 2.6.7 and looks nearly ready for a first review). Unfortunately, > > > DMA is a big no go at the moment so I have to pass ide=nodma in the > > > bootargs. > > > > > > I've got the drives plugged into the sii card, and ide=reverse is doing > > > its job. But although dmesg shows that dma has been turned off, > > > > Is it possible that you are reading it wrong? > > I don't think so, and the box is a lot more responsive. dmesg shows > > ide_setup: ide=nodmaIDE: Prevented DMA This is misleading as drivers are free to override this setting. - 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/