On Sat, Sep 12, 2015 at 03:55:38PM +0100, Ian Campbell wrote: > On Fri, 2015-09-11 at 16:58 +0100, Steve McIntyre wrote: > Does this issue go away entirely if we move from a v4t to v5 base, or > are there also v5 instructions which are (potentially) absent in v8? (I > think so, but I don't have my references to hand). SWP and SWPB - these were deprecated in ARMv7 but absent in ARMv8. Lucy