From owner-freebsd-hackers  Thu Jul 22  4:26:49 1999
Delivered-To: freebsd-hackers@freebsd.org
Received: from verdi.nethelp.no (verdi.nethelp.no [158.36.41.162])
	by hub.freebsd.org (Postfix) with SMTP id B2E2414CE9
	for <hackers@freebsd.org>; Thu, 22 Jul 1999 04:26:34 -0700 (PDT)
	(envelope-from sthaug@nethelp.no)
Received: (qmail 46715 invoked by uid 1001); 22 Jul 1999 11:25:42 +0000 (GMT)
To: des@yes.no
Cc: hackers@freebsd.org, bde@freebsd.org, julian@whistle.com
Subject: Re: IDE breakage
From: sthaug@nethelp.no
In-Reply-To: Your message of "22 Jul 1999 10:53:14 +0200"
References: <xzp3dyhdq11.fsf@des.follo.net>
X-Mailer: Mew version 1.05+ on Emacs 19.34.2
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Date: Thu, 22 Jul 1999 13:25:42 +0200
Message-ID: <46713.932642742@verdi.nethelp.no>
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

> I'm experiencing serious problems with DMA (even normal DMA, not UDMA)
> on recent versions of -STABLE. Here's an excerpt from messages; kernel
> #3 is a recent -STABLE (yesterday's sources), while kernel #2 is
> 3.2-RELEASE. The config file for both is identical.

I can confirm problems with DMA from IDE disks in -STABLE. The problems
seem to have been introduced in

	$Id: ide_pci.c,v 1.28.2.1 1999/07/20 22:58:20 julian Exp $

And the effect for me is that the system stops in singleuser mode, with
a "DMA failure" message. This is on a 440BX/PII-350 system.

Reverting to 1.28 (from 17. January 1999) fixes the problems.

Please back out 1.28.2.1, at least in -STABLE.

Steinar Haug, Nethelp consulting, sthaug@nethelp.no


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message