> On Feb 9, 2021, at 10:09 AM, Linus Torvalds <torva...@linux-foundation.org>
> wrote:
>
> On Tue, Feb 9, 2021 at 8:55 AM Andy Lutomirski <l...@amacapital.net> wrote:
>>
>> Or we hack up #CP to handle this case. I don’t quite know how I feel about
>> this.
>
> I think that's the sane model - if we've replaced the instruction with
> 'int3', and we end up getting #CP due to that, just do the #BP
> handling.
>
> Anything else would just be insanely complicated, I feel.
The other model is “don’t do that then.”
I suppose a nice property of patching ENDBR to INT3 is that, not only is it
atomic, but ENDBR is sort of a NOP, so we don’t need to replace the ENDBR with
anything.
>
> Linus
