From owner-freebsd-stable@FreeBSD.ORG Fri Aug 24 05:18:35 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AAA46106566B for ; Fri, 24 Aug 2012 05:18:35 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 08EF98FC0A for ; Fri, 24 Aug 2012 05:18:33 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q7O5IMAx049447; Fri, 24 Aug 2012 08:18:22 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q7O5I90m021771; Fri, 24 Aug 2012 08:18:09 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q7O5I9ge021770; Fri, 24 Aug 2012 08:18:09 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Fri, 24 Aug 2012 08:18:09 +0300 From: Konstantin Belousov To: Mark Felder Message-ID: <20120824051809.GP33100@deviant.kiev.zoral.com.ua> References: <1345697446.84337.11.camel@neo.cse.buffalo.edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="mvWwdhJHqQXOQ5Pq" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.0 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-stable@freebsd.org, Walter Hurry Subject: Re: FreeBSD 9.1-RC1 Available... X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Aug 2012 05:18:35 -0000 --mvWwdhJHqQXOQ5Pq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 23, 2012 at 05:41:49PM -0500, Mark Felder wrote: > On Thu, 23 Aug 2012 12:37:04 -0500, Walter Hurry = =20 > wrote: >=20 > >One thing (welcome, but puzzling) which surprised me was that my > >vboxguest.ko did *not* need to be recompiled. How did the upgrade manage > >that? >=20 > FreeBSD has a stable ABI unlike Linux. A kernel module compiled for any = =20 > 9.x release should work on any other 9.x release without needing to be = =20 > recompiled. This is a statement that is false at least two times, if not three. This was a question about Kernel Binary Inteface, not Application Binary Interface. First, we have zero guarantees about ability to load or have a system survive loading of the module compiled against the later kernel. Second, we do not have real KBI definition, and KBI stability is managed only ad-hock. E.g. VFS quite often breaks, while network or disk controllers drivers are usually fine. YMMV. Snobby false statements hurt the project. --mvWwdhJHqQXOQ5Pq Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlA3DpEACgkQC3+MBN1Mb4gr6QCfVriy3QU9AKUjrzmU2Y08M+0v 454An0j5/2E98aW69Uh6zgmdkq575VJV =p8LN -----END PGP SIGNATURE----- --mvWwdhJHqQXOQ5Pq--