From: "Jan Beulich" <jbeulich@novell.com>
Subject: Re: [PATCH] linux: prevent non-Xen
	modulesfromloading in Xen kernel
Date: Fri, 18 Jan 2008 16:15:01 +0000
Message-ID: <4790DE95.76E4.0078.0@novell.com>
References: <4790D851.76E4.0078.0@novell.com>
	<C3B67F41.1B092%Keir.Fraser@cl.cam.ac.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C3B67F41.1B092%Keir.Fraser@cl.cam.ac.uk>
Content-Disposition: inline
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: Zachary Amsden <zach@vmware.com>, xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

>>> Keir Fraser <Keir.Fraser@cl.cam.ac.uk> 18.01.08 17:07 >>>
>I disagree. The xen interface version number is simply to allow downgradin=
g
>of the API exposed by the Xen public headers. And it *is* specifically =
the
>source API; *not* the ABI. Xen's ABIs are always backward compatible (old
>guest driver; new Xen will always work), and for forward compatibility =
(new
>guest driver; old Xen) we expect the guest driver to gracefully degrade =
its
>functionality.

Yeah, it really wasn't meant to cover that (which I know has been stable
enough during a reasonably long time now), but rather to have a little =
less
coarse separation than with just "Xen ", but

>This is orthogonal to what you are trying to achieve. So, can we just add
>"Xen " to the magic string?

... sure we can.

Jan