What does "precise exception" handling mean in the context of out-of-order processors?
Correct! Well done.
Incorrect.
The correct answer is A) When an exception occurs, the processor ensures all instructions before the faulting one (in program order) have completed and updated state, while none after it have, presenting a state as if execution were strictly in-order
Correct Answer
When an exception occurs, the processor ensures all instructions before the faulting one (in program order) have completed and updated state, while none after it have, presenting a state as if execution were strictly in-order
Even though instructions may execute out of order internally, precise exceptions require the processor to roll back or suppress effects of instructions beyond the faulting one, presenting software (like the OS exception handler) with a clean, in-order-consistent state for correct recovery.