[CLUE-Talk] Linux-Only Mainframe

[Grant Johnson]

I don't know if it still exists, but IBM used to sell a PCI card with a 
little bitty 370 compatible chip on it for testing MVS/XA configs.  It 
might run it, but, it is a little on the expensive side, I am sure, 
since it is a whole second machine on a card.  Once again, I say:  User 
Mode Linux.

Ed Hill wrote:

>On Fri, 2002-01-25 at 12:02, Joe 'Zonker' Brockmeier wrote:
>
>>On Fri, 25 Jan 2002 rknech at pcisys.net wrote:
>>
>>>The Nice thing about IBM putting Linux on the Mainframes & AS/400's is that
>>>they are able to use Logical Partitioning and run multiple Linux servers
>>>simultaniously! :^)  IBM is supposed to be releasing their code for this
>>>functionality.  This would be nice for those who want to run mulitple linux
>>>serves on one machine on different hard drive partitions without the need
>>>of "multi-booting" or running virtual machines.  Think of the possibilities!!!
>>>
>>Oh, I am... I am...
>>
>>I have a dual Xeon that I'd love to use to run several virtual
>>instances of Linux rather than just one, and without the overhead
>>of VMWare.
>>
>
>
>Unfortunately, it doesn't work that way...
>
>Back at trilug, we hosted a talk by Boas Betzler.  He was one of the
>project leads on the original IBM-skunkworks port of Linux to the
>z-Series.  It was a great talk and he described (in some detail) what
>they did to accomplish the port (including writing a zSeries assembly
>code back-end for gcc).  He also talked about some future directions for
>Linux on the zSeries.
>
>The multiple-copies-of-linux-running-simultaneously trick is very much
>architecture specific as it relies upon certain features of the zSeries
>machines.  Do *NOT* expect to see it ported to anything other than the
>AS/400 series, which I think also supports similar (though more limited)
>VM capabilities.  IBMs VM features will perhaps never be ported to x86
>hardware since the architecture does not support some of the essential
>features.
>
>Ed
>
>

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