Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site wdl1.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!zehntel!dual!amdcad!fortune!wdl1!jbn 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 Lines: 8 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.