From owner-freebsd-current@FreeBSD.ORG  Tue Feb 28 15:23:29 2012
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 910DA106567A;
	Tue, 28 Feb 2012 15:23:29 +0000 (UTC)
	(envelope-from scottl@samsco.org)
Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57])
	by mx1.freebsd.org (Postfix) with ESMTP id 5D3288FC25;
	Tue, 28 Feb 2012 15:23:29 +0000 (UTC)
Received: from [127.0.0.1] (pooker.samsco.org [168.103.85.57])
	(authenticated bits=0)
	by pooker.samsco.org (8.14.5/8.14.5) with ESMTP id q1SFMpHZ027218;
	Tue, 28 Feb 2012 08:23:27 -0700 (MST)
	(envelope-from scottl@samsco.org)
Mime-Version: 1.0 (Apple Message framework v1257)
Content-Type: text/plain; charset=iso-8859-1
From: Scott Long <scottl@samsco.org>
In-Reply-To: <201202280846.08966.jhb@freebsd.org>
Date: Tue, 28 Feb 2012 08:23:27 -0700
Content-Transfer-Encoding: quoted-printable
Message-Id: <14F8E8BB-F952-431E-B1DB-E171D87293AE@samsco.org>
References: <4F26CC5A.2070501@FreeBSD.org> <4F4C0600.2000903@FreeBSD.org>
	<3BA1B476-ED05-4E8E-8DFA-0B06EFB48867@samsco.org>
	<201202280846.08966.jhb@freebsd.org>
To: John Baldwin <jhb@freebsd.org>
X-Mailer: Apple Mail (2.1257)
X-Spam-Status: No, score=-50.0 required=3.8 tests=ALL_TRUSTED,
	T_RP_MATCHES_RCVD autolearn=unavailable version=3.3.0
X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on pooker.samsco.org
Cc: freebsd-current@freebsd.org, Devin Teske <dteske@vicor.com>,
	Andriy Gapon <avg@freebsd.org>
Subject: Re: revisiting tunables under Safe Mode menu option
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Feb 2012 15:23:29 -0000


On Feb 28, 2012, at 6:46 AM, John Baldwin wrote:

> On Tuesday, February 28, 2012 1:23:11 am Scott Long wrote:
>> I still think that it's useful to be able to disable ACPI.  Just =
because=20
> ACPI works well on modern hardware doesn't mean that everything crummy =
from=20
> 2000-2007 suddenly disappeared off the face of the earth.  But I agree =
that=20
> turning it off on modern systems probably does more harm than good.  =
Hence my=20
> suggestion for a finer control over this in the menu.  Maybe Devin =
Teske can=20
> lend some help with this task?  For extra credit, it should be =
possible to=20
> write a simple static analysis tool that collects all of the tunables =
that are=20
> compiled into the kernel and generates a data file that the boot menu =
can=20
> process and turn into interactive knobs for the user.
>=20
> Hmm, with the newer boot menu, can't one now toggle safe mode and ACPI=20=

> independently?  (Assuming we haven't removed the ability to disable =
ACPI from=20
> the menu, if we have we should perhaps put that back).  Having them be=20=

> orthogonal knobs would seem to the be the best approach.
>=20

Yes, Andriy reminded me of this last night, so I withdraw my comments.

Scott