On Mon, Mar 16, 2015 at 8:15 PM, Shmuel Metz (Seymour J.) <[email protected]> wrote: > In > <ca+qm759umgfno+gbxqsgyni1r5uej7dkcdkdzdbrrrrnkai...@mail.gmail.com>, > on 03/16/2015 > at 07:10 PM, Scott Ford <[email protected]> said: > >>I did a quick google on JSCBAUTH and long thread in 2010...very >>interesting several people mentioned to SYNC and LINK to perform >>authorized calls unless I misunderstood the thread. > > The Devil is in the details. SYNC is useful when a dispatching element > is in a privileged state; it has nothing to do with whether the > address space is in a privileged state. Can you quote anything in that > thread to suggest otherwise? If so, it's wrong.
Right. SYNCH and SYNCHX don't say anything about APF authorization. There are parameters which can be used by an APF authorized program which can do things such as changing the PKM (adding new keys in addition to the TCB key), the PSW key, and PSW problem / supervisor state. I've only use SYNCH to run a memory-resident piece of code under a new PRB, not any of the fancy stuff. I think the original design was to allow an type 3 or 4 SVC to invoke some used supplied code, and do so in TCB key / problem state. And then still be in key 0 / supervisor state when the user code returns. > > -- > 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) > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- If you sent twitter messages while exploring, are you on a textpedition? He's about as useful as a wax frying pan. 10 to the 12th power microphones = 1 Megaphone Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
