From owner-freebsd-hackers@FreeBSD.ORG  Mon Dec  3 15:11:52 2012
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
 by hub.freebsd.org (Postfix) with ESMTP id E4C4FF17
 for <freebsd-hackers@freebsd.org>; Mon,  3 Dec 2012 15:11:52 +0000 (UTC)
 (envelope-from kpielorz_lst@tdx.co.uk)
Received: from mail.tdx.com (mail.tdx.com [62.13.128.18])
 by mx1.freebsd.org (Postfix) with ESMTP id 7891E8FC13
 for <freebsd-hackers@freebsd.org>; Mon,  3 Dec 2012 15:11:51 +0000 (UTC)
Received: from MightyAtom.tdx.co.uk (storm.tdx.co.uk [62.13.130.251])
 (authenticated bits=0)
 by mail.tdx.com (8.14.3/8.14.3/) with ESMTP id qB3FBQwo020900
 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
 for <freebsd-hackers@freebsd.org>; Mon, 3 Dec 2012 15:11:27 GMT
Date: Mon, 03 Dec 2012 15:11:21 +0000
From: Karl Pielorz <kpielorz_lst@tdx.co.uk>
To: freebsd-hackers@freebsd.org
Subject: Two Intel E31220L 9.0-Stable systems, 'kern.random' missing on one?
Message-ID: <019F3C674FEE8BF6DB530F39@MightyAtom.tdx.co.uk>
X-Mailer: Mulberry/4.0.8 (Win32)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 03 Dec 2012 15:11:53 -0000


Hi,

I have two SuperMicro E31220L based systems - both had identical 
/etc/sysctl.conf - I then shifted them from 9.0-R to 9.0-Stable (as of 
2012/12/03).

Now I've noticed of them complains at boot time that a bunch of OID's are 
missing - and sure enough:

"
sysctl kern.random
sysctl: unknown oid 'kern.random'
"

But the other system returns these fine.

One system ID's as 'Intel E31220L @ 2.20Ghz' - the other ID's as 'Intel 
E31220L V2 @ 2.30Ghz' the V2 system is apparently 'missing' the kern.random 
stuff.

The only reason I can think for the OID's not being present is if one 
system is using hardware RNG? - Though 'man 4 random' states:

"The only hardware implementation currently is for the
     VIA C3 Nehemiah (stepping 3 or greater) CPU.  More will be added in the
     future."

Is there any other reason why they would have 'disappeared' on the non V2 
system? (in fact, looking at the Feature2 line I can see 'RDRAND' on the V2 
system, hmm so I'm guessing that's it?!)

Thanks,

-Karl