netdev - Re: violating function pointer signature

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Message-ID: <CAADnVQL8d5zKTE_TohUcGgKKp6K1Noo7M22t_hKYQjO_g0Mb0g@mail.gmail.com>
Date:   Thu, 19 Nov 2020 09:04:57 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Segher Boessenkool <segher@...nel.crashing.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Florian Weimer <fw@...eb.enyo.de>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Matt Mullins <mmullins@...x.us>,
        Ingo Molnar <mingo@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        netdev <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        linux-toolchains@...r.kernel.org
Subject: Re: violating function pointer signature

On Thu, Nov 19, 2020 at 6:59 AM Steven Rostedt <rostedt@...dmis.org> wrote:
> Linux obviously
> supports multiple architectures (more than any other OS), but it is pretty
> stuck to gcc as a compiler (with LLVM just starting to work too).
>
> We are fine with being stuck to a compiler if it gives us what we want.

I beg to disagree.
android, chrome and others changed their kernel builds to
"make LLVM=1" some time ago.
It's absolutely vital for the health of the kernel to be built with
both gcc and llvm.