Re: [RFC v2 1/6] x86: introduce kernel restartable sequence

[Andi Kleen]

> Thanks for the explanations. I donât think it would work (e.g., IRQs). I can
> avoid generalizing and just detect the "magic sequenceâ of the code, but let
> me give it some more thought.

If you ask me I would just use compiler profile feedback or autofdo (if your
compiler has a working version)

The compiler can do a much better job at optimizing this than you ever could.

Manual FDO needs some kernel patching though.

-Andi