On Wed, Dec 14, 2016 at 10:12 AM, Charles Mills <[email protected]> wrote:
> Well, yes, the why is to access shared 64-bit common. > > It's worked well for years. A PC service to move some data and increment a > pointer (millions of times per hour) seemed like overkill. > > Charles > > Just talking out of my hat, why not use one of the MVC variants? MVCDK (MoVe Character with Destination key), MVCK (MoVe Character with Key), MVCOS (MoVe Character with Optional Specification), or MVCSK (MoVe Character with Source Key). These are all "semi-priviliged" and the specified key is checked against the PKM for validity. Of course, the PoPS states that these instructions can be significantly slower than the normal MVC instruction. They also may be overkill if you're doing something like: SPKA L R1,KEY0FULL A R1,SOMEDATA ST R1,KEY0FULL SPKA -- Heisenberg may have been here. http://xkcd.com/1770/ Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
