Re: Continuation of the Mach Microkernel

From: Antony T Curtis (antony.t.curtis_at_ntlworld.com)
Date: 01/25/05

  • Next message: Kris Kennaway: "Re: Continuation of the Mach Microkernel" 
    To: Justin Walker <justin@mac.com>
Date: Tue, 25 Jan 2005 09:11:05 +0000

    On Mon, 2005-01-24 at 20:46 -0800, Justin Walker wrote:
    > On Jan 24, 2005, at 19:50, Andrew Reilly wrote:
    >
    > > On Fri, Jan 21, 2005 at 04:51:51PM -0500, Nicholas Ink wrote:
    > >> Has anyone tried running the Mach microkernel with a new version of
    > >> FreeBSD, like 5.x? I'm working on a project involving that
    > >> microkernel, but I'm concerned that it won't work with newer versions
    > >> of FreeBSD.
    > >> Does anyone know anything or know of any resources that might assist
    > >> me?
    > >
    > > How about the Darwin codebase? They recently upgraded their
    > > user-land to FreeBSD 5.something, I believe.
    >
    > Nope. The Darwin kernel uses some updates from FreeBSD 4.x, not 5.x.
    > It isn't a wholesale import of FreeBSD, though. The device driver
    > model is completely different, as is the interface between the network
    > stacks and the devices.
    >
    > Also, just to be clear, Darwin doesn't use Mach as a microkernel. The
    > implementation is more like Mach 2.x than Mac 3.x (even though the Mach
    > bits are based on Mach 3.x): there is no support for running "guest
    > OSs" in Darwin.

    There was a project someone had called something like MachBSD or xBSD
    which had a Mach microkernel and a FreeBSD 4.x userland - it had a
    project goal to reimplement FreeBSD but with a Mach-based kernel. The
    site disappeared sometime last year - it had a couple of ISOs but didn't
    have complete source online IIRC. 

    -- 
Antony T Curtis, BSc.                   UNIX, Linux, *BSD, Networking
antony.t.curtis@ntlworld.com            C++, J2EE, Perl, MySQL, Apache
                                        IT Consultancy.
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  • Next message: Kris Kennaway: "Re: Continuation of the Mach Microkernel"

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