From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262125AbUB2UC4 (ORCPT ); Sun, 29 Feb 2004 15:02:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262129AbUB2UC4 (ORCPT ); Sun, 29 Feb 2004 15:02:56 -0500 Received: from mx2.ngi.de ([213.191.74.84]:18644 "EHLO mx2.ngi.de") by vger.kernel.org with ESMTP id S262125AbUB2UCy (ORCPT ); Sun, 29 Feb 2004 15:02:54 -0500 Date: Sun, 29 Feb 2004 20:23:20 +0100 From: Richard Zidlicky To: Geert Uytterhoeven Cc: Bartlomiej Zolnierkiewicz , Jeff Garzik , Jens Axboe , Linux Kernel Subject: Re: Worrisome IDE PIO transfers... Message-ID: <20040229192320.GA20299@linux-m68k.org> References: <4041232C.7030305@pobox.com> <200402290121.30498.bzolnier@elka.pw.edu.pl> <40413927.6010408@pobox.com> <200402290405.19067.bzolnier@elka.pw.edu.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Feb 29, 2004 at 09:52:08AM +0100, Geert Uytterhoeven wrote: > On Sun, 29 Feb 2004, Bartlomiej Zolnierkiewicz wrote: > > On Sunday 29 of February 2004 01:58, Jeff Garzik wrote: > > > > I like Alan's idea to use loopback instead of "bswap". > > > > > > Neat but no more zerocopy that way. I much prefer a swap-as-you-go... > > > > Okay, better solution: > > > > - on Atari/Q40: > > if drive->bswap use insw/outsw instead of swapping variants > > Yep, that sounds the most logical. Richard? looks good. However it appears to fix only part of the problem - we need some logic to ensure only disk data is swapped. Bswapping WIN_DOWNLOAD_MICROCODE data would not be very clever I guess. Richard