From owner-freebsd-arch@FreeBSD.ORG  Sun Feb 10 11:24:46 2008
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: arch@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 87A1116A417;
	Sun, 10 Feb 2008 11:24:46 +0000 (UTC) (envelope-from des@des.no)
Received: from tim.des.no (tim.des.no [194.63.250.121])
	by mx1.freebsd.org (Postfix) with ESMTP id 46B6713C467;
	Sun, 10 Feb 2008 11:24:46 +0000 (UTC) (envelope-from des@des.no)
Received: from tim.des.no (localhost [127.0.0.1])
	by spam.des.no (Postfix) with ESMTP id BA9D3207E;
	Sun, 10 Feb 2008 12:24:38 +0100 (CET)
X-Spam-Tests: AWL
X-Spam-Learn: disabled
X-Spam-Score: -0.3/3.0
X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on tim.des.no
Received: from ds4.des.no (des.no [80.203.243.180])
	by smtp.des.no (Postfix) with ESMTP id 84C1B2049;
	Sun, 10 Feb 2008 12:24:38 +0100 (CET)
Received: by ds4.des.no (Postfix, from userid 1001)
	id 7DDA58449F; Sun, 10 Feb 2008 12:24:37 +0100 (CET)
From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: "M. Warner Losh" <imp@bsdimp.com>
References: <200802081802.54313.jhb@freebsd.org> <86sl02e736.fsf@ds4.des.no>
	<20080209.160817.168016724.imp@bsdimp.com>
Date: Sun, 10 Feb 2008 12:24:37 +0100
In-Reply-To: <20080209.160817.168016724.imp@bsdimp.com> (M. Warner Losh's
	message of "Sat\, 09 Feb 2008 16\:08\:17 -0700 \(MST\)")
Message-ID: <86lk5taway.fsf@ds4.des.no>
User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (berkeley-unix)
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Cc: arch@freebsd.org
Subject: Re: [PATCH] Automatic kernel version module dependencies..
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 10 Feb 2008 11:24:46 -0000

"M. Warner Losh" <imp@bsdimp.com> writes:
> Dag-Erling_Sm=C3=B8rgrav <des@des.no> writes:
> > ...provided they were built from the same config...  I think
> > MUTEX_PROFILING has been fixed, but there may still be cases where
> > the ABI changes dependening on kernel options.
> These are usually well documented.  But I can't find any in the
> current doc set.  Maybe you could point me at options that do this so
> we can document them (and maybe add a #warning when compiling with
> them)?

Here's one I found: DEBUG_LOCKS changes the size of struct lock, which
changes the size and layout of struct vnode.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no