On Sun, Aug 23, 2020 at 1:26 AM Thomas Gleixner <[email protected]> wrote: > > Remove the RDPID optimization, which is not even > backed by numbers from the paranoid entry path instead.
Ugh, that's sad. I'd expect the LSL to be quite a bit slower than the
RDPID on raw hardware, since LSL has to go out to the GDT.
And I don't think we need the GDT for anything else normally, so it's
not even going to be cached.
Oh well.
Linus
