Sure of course, but that's going to cost something like 500 cycles [1] to emulate something that only exists to save 2 or 3 cycles. Also, not in the kernel but

Sure of course, but that's going to cost something like 500 cycles [1] to emulate something that only exists to save 2 or 3 cycles. Also, not in the kernel but in SBI -- in Machine mode not Supervisor mode. [1] estimate based on how long it takes to trap and emulate misaligned accesses on VisionFive 2.