Messages in this thread | | | Date | Tue, 28 Mar 2000 00:19:09 +0200 | From | Jens Benecke <> | Subject | Re: VM modules in kernel? |
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On Fri, Mar 24, 2000 at 06:29:55PM -0500, Mike A. Harris wrote: > On Fri, 24 Mar 2000, Alan Cox wrote: > >> The 'hypervisor' is a new term to me.. Are you refering to the > >> Transmeta CPU and it's native mode? If I read you correctly > >No its what the S/390 VM is often called. Its a supervisor for > >supervisor mode programs so illogically enough its a hypervisor 8). The > >IBM mainframe guys thing this kind of set up is routine. Unix is met > >with 'You mean you cant run a new kernel on test at the same time as the > >old one' type remarks. > Hmm.. Sounds like interesting hardware indeed.
It is. There was a link on Slashdot a couple weeks ago about a guy who installed the S/390 port on his companys production mainframe under the VM Operating system. The VM does not just emulate a subset of itself like the ix86 chips can - it can do the _entire_ hardware instruction set.
Look at http://www.linuxplanet.com/linuxplanet/reports/1532/1/ and read how someone managed 41,000 simultaneous Linux copies running on one mainframe, presenting themselves as completely seperated machines to the outside network.
Of course, it has its price :)
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