Re: Power Mac Port and Mach 3.0 kernel

[Craig Oda <craig@example.com>]

On Tue, 13 Feb 1996, Stephen J. Turnbull wrote:

> I'm fairly sure that Linux does not use the Mach microkernel, and I'm
> also fairly sure that Linux cannot use the Mach microkernel because
> although the Mach kernel is freely distributable for research
> purposes, it is encumbered with a no-commercial-use license.  You can

>From the OSF Research Institute, 

The OSF Research Institute has made significant improvements and 
extensions to
the original CMU Mach3.0 microkernel, and the result, named OSF MK, is 
still available for free. The
latest versions of OSF/1 are based on OSF MK but are encumbered by 
commercial licenses. 

The OSF MK kernel is freely available but the OSF/1 server is encumbered by
commercial licenses including the SVR2 Unix license.



Although we are convinced that multi-servers are the way to go to produce 
high-quality operating
systems on top of Mach, this strategy was not applicable in our case 
because we started from an
existing monolithic kernel and we wanted to maximize the code reuse ratio 
to make it easier to track
new releases of Linux and leverage the Linux community effort.

------------------------------

So, there is a Mach-like micro kernel there, but it is a single-server
and not a multi-server...  oh well.  Interesting anyway.

Regards,
Craig


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