In <[email protected]>, on
07/25/2014
at 03:48 PM, Paul Gilmartin
<[email protected]> said:
>As Joe D'Alessandro pointed out, with a citation in the PoP, there's
>considerable hardware support for this function.
You don't need copy-on-write to support automatically sharing
suitable[1] dynamic load modules between address spaces; TSS/360 did
just fine without it. It's simply a choice that IBM made, presumably
because of the hardware restrictions[2] way back when. I see no reason
that they couldn't have done it easily in MVS/XA had someone made a
compelling business case.
[1] Above the bar, REFR and RENT.
[2] No DAT, E (32 KiB) design point
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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