>I'd have thought that CICS (in particular), in an early stage 
>of startup when it runs authorized, would set the 
>"Storage-Protection-Override Control" (bit 39 of CR0) if 
>STGPROT=YES was specified as a DFHSIT parm. 

Storage protection override is set for everyone in z/OS and has been 
pretty much since it was developed. CICS does not need to ask for it.

>This would seem to obviate any need for CICS, post-initialization 
>when running unauthorized, to issue SPKA or similar 
>key-related instructions simply to access key9 storage."

True, but if the transaction is key 9 there must still be a switch from 
transaction key to CICS key to write into CICS storage.

Peter Relson
z/OS Core Technology Design

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