RM C 3 28 Interrupt Support (GNAT Reference Manual)

### 6.46 RM C.3(28): Interrupt Support ¶

> “If the `Ceiling_Locking` policy is not in effect, the implementation should provide means for the application to specify which interrupts are to be blocked during protected actions, if the underlying system allows for a finer-grain control of interrupt blocking.”

Followed. The underlying system does not allow for finer-grain control of interrupt blocking.