Re: [RFC PATCH 5/5] selftest/x86: Add CET quick test

Kees Cook
2020-05-22T17:36:04Z

On Fri, May 22, 2020 at 07:27:11PM +0200, Peter Zijlstra wrote:
> On Fri, May 22, 2020 at 10:22:51AM -0700, Kees Cook wrote:
>
> > But yes, I think getting a copy of asm.h would be nice here. I don't
> > think the WRITE_ONCE() is needed in this particular case. Hmm.
>
> Paranoia on my end because I had no clue wth he wanted with his -O0
> magic gunk.

Heh, yes, which is why I asked for many more comments. ;) I *think* it
was entirely to control the stack (and ssp) behavior (i.e. don't inline,
don't elide unused stack variables, etc).

--
Kees Cook