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From: jbn@wdl1.UUCP
Newsgroups: net.unix-wizards
Subject: Re: Unix (In)Security
Message-ID: <180@wdl1.UUCP>
Date: Tue, 15-Jan-85 16:37:03 EST
Article-I.D.: wdl1.180
Posted: Tue Jan 15 16:37:03 1985
Date-Received: Sun, 20-Jan-85 06:22:57 EST
Sender: jrb@wdl1.UUCP
Organization: Ford Aerospace, Western Development Laboratories
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Nf-ID: #R:sask:-14100:wdl1:17100034:000:447
Nf-From: wdl1!jbn    Dec 10 15:56:00 1984


     A secure VM kernel is indeed possible, and exists; it is called KVM/370
and was developed by Systems Development Corporation several years ago.  The
major problem with it is that it provides hard separation between virtual
machines running on the same hardware; the virtual machines cannot 
intercommunicate or share files at all.  The overhead is higher than standard
VM, but is supposedly tolerable.  It supports a DoD-type security model.