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From:   Joel Fernandes <joel@joelfernandes.org>
Date:   Tue, 16 Apr 2019 13:22:38 -0400
Message-ID: <CAEXW_YS=C8FkC1h4ZQ6_jX8jY==Xe66c+q9cgM=Ci+N7SyNz6w@mail.gmail.com>
Subject: Re: [PATCH v5 1/3] Provide in-kernel headers to make extending kernel easier
To:     Olof Johansson <olof@lixom.net>
Cc:     Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Karim Yaghmour <karim.yaghmour@opersys.com>,
        Kees Cook <keescook@chromium.org>,
        Joel Fernandes <joelaf@google.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Qais Yousef <qais.yousef@arm.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Manoj Rao <linux@manojrajarao.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Alexei Starovoitov <ast@kernel.org>,
        atish patra <atishp04@gmail.com>,
        Daniel Colascione <dancol@google.com>,
        Dan Williams <dan.j.williams@intel.com>,
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        Masahiro Yamada <yamada.masahiro@socionext.com>,
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On Tue, Apr 16, 2019 at 12:57 PM Olof Johansson <olof@lixom.net> wrote:
[snip]
> > Where kheaders.tar.xz is placed doesn't really matter.
> > /proc or /sys/kernel makes no real difference.
>
> If done in a location that isn't a perpetual ABI commitment, a tarball
> solution is something we can work with.

This is the part I don't get, Olof. It has to be an ABI commitment so
that the tools always work. Why are we so interested in breaking
userspace tools? We want a robust solution, not a fragile one.

thanks,

 - Joel