Hi Arnd, > >> > apply FEAT_LSUI instruction to emulate deprecated swpX instruction. > >> > >> Can you explain in the changrelog why you do this? > >> > >> In particular, is this a performance optimization or is this required > >> for correctness in some scenario? > > > > I think the main purpose using for this is to "remove the toggling the > > PSTATE.PAN" bit. so that remove some *potential* problem which can > > happen when PAN bit is cleared. > > Ok, I see. This should definitely be part of the commit > log for the patch in addition to the cover letter.
Thanks. I'll add detail in next spin after receving other comments. [...] -- Sincerely, Yeoreum Yun
