From owner-freebsd-current@FreeBSD.ORG  Tue Mar  9 09:07:55 2010
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 890911065676
	for <freebsd-current@FreeBSD.org>; Tue,  9 Mar 2010 09:07:55 +0000 (UTC)
	(envelope-from dfr@rabson.org)
Received: from mail2.rabson.org (mail2.rabson.org [83.222.226.140])
	by mx1.freebsd.org (Postfix) with ESMTP id 394A28FC16
	for <freebsd-current@FreeBSD.org>; Tue,  9 Mar 2010 09:07:55 +0000 (UTC)
Received: from macpro.dyn.rabson.org (router.rabson.org [80.177.232.241])
	by mail2.rabson.org (Postfix) with ESMTPSA id 1042236;
	Tue,  9 Mar 2010 09:07:53 +0000 (GMT)
Mime-Version: 1.0 (Apple Message framework v1077)
Content-Type: text/plain; charset=us-ascii
From: Doug Rabson <dfr@rabson.org>
In-Reply-To: <4B95920C.5000909@jrv.org>
Date: Tue, 9 Mar 2010 09:07:52 +0000
Content-Transfer-Encoding: quoted-printable
Message-Id: <89BC6265-4DB4-46A2-A01E-80FDA6E7377B@rabson.org>
References: <4B934015.8000908@gmail.com>
	<4B934354.4030002@elischer.org>	<20100307184422.7007747d.nork@FreeBSD.org>	<4B93E96B.8090002@gmail.com>
	<20100309080951.b1a37510.nork@FreeBSD.org>
	<4B95920C.5000909@jrv.org>
To: James R. Van Artsdalen <james-freebsd-current@jrv.org>
X-Mailer: Apple Mail (2.1077)
Cc: David Ehrmann <ehrmann@gmail.com>, freebsd-current@FreeBSD.org,
	Norikatsu Shigemura <nork@FreeBSD.org>,
	Julian Elischer <julian@elischer.org>
Subject: Re: Core i5 AES acceleration
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, 09 Mar 2010 09:07:55 -0000


On 9 Mar 2010, at 00:10, James R. Van Artsdalen wrote:

> Norikatsu Shigemura wrote:
>> According to http://en.wikipedia.org/wiki/AES-NI , we can get
>> 	specification document: http://software.intel.com/file/20457 .
>>=20
>> 	I saw it, and consider that we can release under BSDL.  Because
>> 	of 'from specification'.
>=20
> That document is short on details, such as the opcodes and machine
> implementation details (flags, etc).
>=20
> The XMM registers are used.  That may be a problem for kernel code.
>=20
> When last I looked openssl did not use /dev/crypt - it's not clear how
> big the benefit would be from doing this if nothing that uses openssl =
wins.
>=20
> It might be more beneficial to FreeBSD to patch openssl to use
> /dev/crypt.  If it turns out to not be a significant win then that =
might
> hint that the AES opcodes won't be significant win in general either.

The in-kernel kerberos code for NFS would also benefit since it uses the =
crypto framework.