From owner-freebsd-hardware@FreeBSD.ORG  Wed Nov  7 21:23:16 2007
Return-Path: <owner-freebsd-hardware@FreeBSD.ORG>
Delivered-To: freebsd-hardware@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id D815C16A420;
	Wed,  7 Nov 2007 21:23:16 +0000 (UTC)
	(envelope-from tinguely@casselton.net)
Received: from casselton.net (casselton.net [63.165.140.2])
	by mx1.freebsd.org (Postfix) with ESMTP id 82BF413C4B2;
	Wed,  7 Nov 2007 21:23:16 +0000 (UTC)
	(envelope-from tinguely@casselton.net)
Received: from casselton.net (localhost [127.0.0.1])
	by casselton.net (8.13.8/8.13.8) with ESMTP id lA7LCCA4041693;
	Wed, 7 Nov 2007 15:12:12 -0600 (CST)
	(envelope-from tinguely@casselton.net)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=casselton.net;
	s=ccnMail; t=1194469932; bh=lk1ecjYPQKXhaQbliufls+MLKKgFqiioqdQ5aIO
	YVek=; h=Date:From:Message-Id:To:Subject:Cc:In-Reply-To; b=itE+zmJF
	rlp67O3xNm+yb5qgFBwW92pRlkSIDR3cMH9l5RpXzwL9KtfgvoaNnIbZ8zD/oLgTfmV
	gPjoCo1Qd24OqCrxZ1Z/NtffUIK2XmwdVhnjH3NyjVWK60FVAKzOKnwouMePl18m5xI
	7bjyyrXeB8DSw3KvLcEAP+ZQQYQ/s=
Received: (from tinguely@localhost)
	by casselton.net (8.13.8/8.13.8/Submit) id lA7LCCJi041692;
	Wed, 7 Nov 2007 15:12:12 -0600 (CST) (envelope-from tinguely)
Date: Wed, 7 Nov 2007 15:12:12 -0600 (CST)
From: Mark Tinguely <tinguely@casselton.net>
Message-Id: <200711072112.lA7LCCJi041692@casselton.net>
To: rpaulo@freebsd.org, sobomax@freebsd.org
In-Reply-To: <4732171F.3010803@FreeBSD.org>
Cc: rink@freebsd.org, freebsd-current@freebsd.org, freebsd-i386@freebsd.org,
	freebsd-hardware@freebsd.org
Subject: Re: MacBook users: possible fix for the SMP problem
X-BeenThere: freebsd-hardware@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: General discussion of FreeBSD hardware <freebsd-hardware.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hardware>, 
	<mailto:freebsd-hardware-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hardware>
List-Post: <mailto:freebsd-hardware@freebsd.org>
List-Help: <mailto:freebsd-hardware-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hardware>, 
	<mailto:freebsd-hardware-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 07 Nov 2007 21:23:17 -0000


>  I don't really like the fact that it has to be turned on manually. Is it 
>  possible to make this automatic based on BIOS Id or something like this?
>
>  -Maxim

(Thread summary because of text removal - "On some systems, namely MacBooks
 we need to disallow the legacy USB circuit to generate an SMI# because this
 can  cause several problems, namely: incorrect CPU frequency detection and
 failure to start the APs." - taken from patch explaination).

This sounds like a great compiler option / C code definition. It can be
compiled into kernel and left as the default if you need it. It should
not go into GENERIC.

--Mark Tinguely.