linux-kernel - Re: [PATCH] compiler-clang: add build check for clang 10.0.1

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Message-ID: <20200826212648.GA1005132@ubuntu-n2-xlarge-x86>
Date:   Wed, 26 Aug 2020 14:26:48 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Marco Elver <elver@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] compiler-clang: add build check for clang 10.0.1

On Wed, Aug 26, 2020 at 11:17:34PM +0200, Miguel Ojeda wrote:
> On Wed, Aug 26, 2020 at 10:14 PM Nick Desaulniers
> <ndesaulniers@...gle.com> wrote:
> >
> > During Plumbers 2020, we voted to just support the latest release of
> > Clang for now.  Add a compile time check for this.
> 
> Since this effectively enforces a minimum version for Clang, I'd
> also update `Documentation/process/changes.rst` and
> `Documentation/admin-guide/README.rst` to mention this, and perhaps
> use that as a commit title ("implement minimum version for Clang")
> since that is the important change, not the implementation so much!

I was actually going to comment on this separately but you beat me to it
:) this patch probably should have been sent as a series with the
Documentation update to avoid confusion for the reviewers:

https://lore.kernel.org/lkml/20200826191555.3350406-1-ndesaulniers@google.com/

Cheers,
Nathan

> [Actually, I'd remove the particular GCC version from the
> `admin-guide/README.rst` to avoid having the version in 2 places (that
> doc already links to the other one), but that should be another
> patch.]
> 
> Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
> 
> Cheers,
> Miguel