Authorization

Environmental factor	Requirement
Problem or supervisor state	All FRRs receive control in supervisor state.
PSW key	All FRRs receive control in PSW key 0.
PKM	For FRRs defined through the SETFRR macro with the MODE=FULLXM or MODE=PRIMARY parameters, the PKM on entry to the FRR is the PKM at the time the SETFRR macro was issued. For FRRs defined through the SETFRR macro with the MODE=HOME parameter, the PKM on entry to the FRR is as follows: If the FRR is in SRB mode, the PKM at the time of the error. If the FRR is in task mode, the PKM that can be constructed from the storage protection key in the TCB of the currently active task, unless a DAT error occurs. If a DAT error occurs, the PKM is the PKM at the time of the error.