Martin wrote
>For CICS it is in use to allow CICS to switch from non->privileged key (90) to 
>privileged key (80 in z/OS or any other >in z/VSE).


So you are saying this technique is viable for z/OS.

Wasnt sure what this sequence of instructions was trying to accomplish
 ORG     *-32                                              
 DC      X'00000008'   
 ORG            

Paul
---------- Original Message ----------
From: [email protected]
To: [email protected]
Subject: Re: WAVV2010 Presentation
Date: Wed, 6 Aug 2014 15:50:31 +0200

Chuck,

>> I do know the author of the presentation and he runs z/VSE.

Come on - ;-) - I know him too. And I even know the father of that idea.

Back to Pauls original question- (in the light of the fact that it is
for a z/VSE system)

>> My understanding is that this snipet of code allows the caller to add
>> PSW Key E and F to there PSWKey list.

To be percise: sets the bits for SPKA authorisation

>> Does anyone use this technique ?

Is the op-sys itself considered to be "anyone"?

For CICS it is in use to allow CICS to switch from non-privileged key
(90) to privileged key (80 in z/OS or any other in z/VSE).

>> Does anyone have a routine like this that is coded differently ?

There are certainly other ways to skin a cat- but to set a bit in a
controlregister this method certainly fits

Or are you asking for the 
 ORG     *-32                                              
 DC      X'00000008'   
 ORG                                   

I vaguely recall that this fixed a problem with IBM-code which is
addressed/fixed meanwhile.

Should I find out for you?

-- 
Martin

Pi_cap_CPU - all you ever need around MWLC/SCRT/CMT in z/VSE 
more at http://www.picapcpu.de

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