Re: [PATCH v5 00/18] Rework READ_ONCE() to improve codegen

[Marco Elver]

On Thu, 14 May 2020 at 17:09, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:
> > On Thu, May 14, 2020 at 03:35:58PM +0200, Marco Elver wrote:
> >> Any preferences?
> >
> > I suppose DTRT, if we then write the Makefile rule like:
> >
> > KCSAN_SANITIZE := KCSAN_FUNCTION_ATTRIBUTES
> >
> > and set that to either 'y'/'n' depending on the compiler at hand
> > supporting enough magic to make it all work.
> >
> > I suppose all the sanitize stuff is most important for developers and
> > we tend to have the latest compiler versions anyway, right?
>
> Developers and CI/testing stuff. Yes we really should require a sane
> compiler instead of introducing boatloads of horrible workarounds all
> over the place which then break when the code changes slightly.

In which case, let me prepare a series on top of -tip for switching at
least KCSAN to Clang 11. If that's what we'll need, I don't see a
better option right now.

Thanks,
-- Marco