These areas are reserved. I had an experience with Syncsort who had
problems with it. They wrote a fix as far as I can remember.
Gunter Hochreiter
m
From: "John P. Baker" <jbaker...@comporium.net>
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Date: 12/09/2010 01:36 PM
Subject: Re: z/OS IARV64
Sent by: IBM Mainframe Assembler List
<ASSEMBLER-LIST@LISTSERV.UGA.EDU>
Walt,
There seems to be some belief here that 2G thru 4G-1 is unavailable for
some
reason other than that specifically addressed by the undocumented
USE2GTO32G={NO|YES} operand.
I do not believe that to be case. Am I correct?
John P. Baker
-----Original Message-----
From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU
]
On Behalf Of Walt Farrell
Sent: Thursday, December 09, 2010 1:24 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: z/OS IARV64
As far as I know, yes. New functions in z/OS R12 required reserving some
space for system functions, and the VSM designers chose that previously
unreserved 256GB chunk of storage addresses for that purpose.
--
Walt Farrell
IBM STSM, z/OS Security Design
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