Scott Cheloha <scottchel...@gmail.com> wrote: > I was under the impression kettenis@ had added an lfence to the kernel > TSC's tc_get_timecount(), but I was mistaken. > > We can deal with that separately.
the question was asked, but I guess not answered definitively I think we should *always* lfence, because in the end the values do get compared against others which are lfenced, and it would be a shame if delta was ever negative.
