I can’t recall a policy other than a shift to Object Code Only where the internals became opaque
Matt Hogstrom m...@hogstrom.org +1-919-656-0564 PGP Key: 0x90ECB270 Facebook <https://facebook.com/matt.hogstrom> LinkedIn <https://linkedin/in/mhogstrom> Twitter <https://twitter.com/hogstrom> “It may be cognitive, but, it ain’t intuitive." — Hogstrom > On Apr 15, 2022, at 11:14 AM, Alan Altmark <alan_altm...@us.ibm.com> wrote: > > On Thu, 14 Apr 2022 11:37:32 +0000, Seymour J Metz <sme...@gmu.edu> wrote: > >> I'm editing the wikipedia [[Operating system]] article, and another editor >> has challenged the sentence "The logic manuals for their >> contemporary descendants, z/VM, z/VSE and z/VM, are not available to the >> general public." What are the relevant URLs for IBM's >> policy? Thanks. > > I've never heard of such a policy. > > z/VM stopped publishing its PLMs because the effort to maintain them exceeded > their value. A vendor who needs information about z/VM internals uses their > PartnerWorld relationship to obtain it. That said, for historical reasons > the PLM for CP still exists internally. I know because I made a large update > to it just a handful of years ago, but it's already out of date again. But > it's nice to hand it to a new hire and point to the parts that are still good. > > Even though z/VM doesn't publish a PLM, it still publishes most of the source > code for CP and CMS. Not surprisingly, we exclude any source code that uses > unpublished elements of z/Architecture ("not otherwise described in this > publication"), uses unpublished device interfaces, or that contains other > protected intellectual property. > > Tied to that are source code updates that are included with PTFs, but that's > really shipped only because we'd have to stick our fingers in the spinning > fan blades of the long-established maintenance process to stop it. If we > ever change the way we maintain the system in the field, those source code > updates may well end. But that's again a case where the only people who care > are a few vendors, and they have other resources at their disposal. > > z/VM customer sysprogs in 2022 do not modify or extend CP or CMS, and the > customers do not want their IT managers to also be in the software > development business. Governance rules related to off-the-shelf hardware and > software have moved to the forefront, and you can't hold the vendor liable if > you have broken the warranty seal. > > And we don't want sysprogs wasting time trying to shoot a dump. That's what > they pay IBM to do and the sooner they get the dump to us, the sooner we can > fix the problem. > > Alan Altmark > IBM > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
