linux-kernel - Re: [PATCH 1/2] compiler_attributes.h: define __no

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Date:   Sat, 19 Jun 2021 13:26:37 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Bill Wendling <wcw@...gle.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        Borislav Petkov <bp@...en8.de>, Martin Liska <mliska@...e.cz>,
        Marco Elver <elver@...gle.com>,
        Jonathan Corbet <corbet@....net>,
        Fangrui Song <maskray@...gle.com>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>, johannes.berg@...el.com,
        linux-toolchains@...r.kernel.org
Subject: Re: [PATCH 1/2] compiler_attributes.h: define __no_profile, add to noinstr

On Sat, Jun 19, 2021 at 1:30 AM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> +/*
> + * Optional: only supported since clang >= 13
> + *      gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80223
> + *    clang: https://clang.llvm.org/docs/AttributeReference.html#no_profile
> + */

I am not sure if it is best or not to have the GCC link in order to be
consistent with the rest of the links (they are for the docs only). Do
we know if GCC going to implement it soon?

Otherwise, it looks good to me.

Cheers,
Miguel