Re: [PATCH v2] x86: bring back rep movsq for user access on CPUs without ERMS

[Linus Torvalds]

On Sun, 3 Sept 2023 at 14:06, Mateusz Guzik <mjguzik@xxxxxxxxx> wrote:
>
> I don't think it is *that* bad. I did a quick sanity check on that
> front by rolling with bpftrace on cases which pass AT_EMPTY_PATH *and*
> provide a path.

I guess you are right - nobody sane would use AT_EMPTY_PATH except if
they don't have a path.

Of course, the only reason we're discussing this in the first place is
because people are doing insane things, which makes _that_ particular
argument very weak indeed...

                     Linus