33.10.3.4. ARM DMB instruction
TODO: create and study a minimal examples in gem5 where the DMB instruction leads to less cycles: https://stackoverflow.com/questions/15491751/real-life-use-cases-of-barriers-dsb-dmb-isb-in-arm
TODO: create and study a minimal examples in gem5 where the DMB instruction leads to less cycles: https://stackoverflow.com/questions/15491751/real-life-use-cases-of-barriers-dsb-dmb-isb-in-arm