Data cache maintenance considerations
DC IVAC operations in AArch64 state are treated as DC CIVAC except for permission checking and watchpoint matching.
DC ISW operations in AArch64 state, perform both a clean and invalidate of the target set/way. The values of HCR.SWIO and HCR_EL2.SWIO have no effect.
See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile for more information.