In a message dated 11/23/2007 4:42:06 P.M. Central Standard Time, [EMAIL PROTECTED] writes:
Peter Hunkeler said > >"Interrupt Status: An FRR gets control and is entered disabled if, > >at the time of the error, the mainline is disabled. Any FRR entered > >disabled must remain disabled." > > This is correct if you "legally" got disabled. If you got disabled > using the nonsupported way using STNSM, your FRR will be entered > enabled. At least this is how I understand Peter's statement. Yes, I got that. The point is that the fine manual makes no such distinction. The various manuals describe disabled aspects of several functions, such as using FRRs and acquiring storage in certain subpools. There are at least three different ways to test for disablement: (1) holding any lock, (2) having any super bit turned on, and (3) having I/O and external interrupts masked off in the current PSW. The problem, in my opinion, or perhaps another problem, is that not all services allow for all 3 possible ways of being disabled at every point in their instruction paths where a test for being disabled must be made. Bill Fairchild Franklin, TN **************************************Check out AOL's list of 2007's hottest products. (http://money.aol.com/special/hot-products-2007?NCID=aoltop00030000000001) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
