On Thu, 16 Oct 2008 15:10:29 -0600, Mark Post wrote:
>
>> I glanced at Sine Nomine's page about OpenSolaris for Z.  There's a
>> prominent restriction that it runs only under z/VM, not in an LPAR.
>
>It uses a lot of features for various reasons, not just the DASD code.  The 
>design goal from the beginning was to maximize the amount of interaction 
>between OpenSolaris and z/VM.
>
That sounds pointless.  Perhaps better stated as "to minimize
duplication of function already available in z/VM."

>> Is OpenSolaris for z eligible for IFL?
>
>Yes, although "eligible" is misleading, given the licensing of it.  
>OpenSolaris will run on an IFL or a standard CP.
>
IOW, OpenSolaris does not use the "single instruction" alluded
to below?

>> From what little I understand, any OS which does not invoke some specific
>> functions (undocumented) should work on an IFL.
>
>It's actually a single instruction, not even a diagnose.
>
I suppose that single instruction (I assume you're prevented
from naming it here) could readily be discovered by an
exhaustive search in a test program.  I suppose that might
violate an EULA prohibition of "reverse engineering".

-- gil

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