From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: Re: [PATCH v1 2/3] zinc: Introduce minimal cryptography library
Date: Tue, 7 Aug 2018 18:51:39 -0700
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Cc: Ingo Molnar <mingo@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        linux-arch@vger.kernel.org, Eric Biggers <ebiggers3@gmail.com>,
        Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Netdev <netdev@vger.kernel.org>,
        David Miller <davem@davemloft.net>,
        Andrew Lutomirski <luto@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Samuel Neves <sneves@dei.uc.pt>,
        "Daniel J . Bernstein" <djb@cr.yp.to>,
        Tanja Lange <tanja@hyperelliptic.org>,
        Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>,
        Karthikeyan Bhargavan <karthik.bhargavan@gmail.com>
To: Andy Lutomirski <luto@amacapital.net>
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On Tue, Aug 7, 2018 at 6:49 PM Andy Lutomirski <luto@amacapital.net> wrote:
> I really wish we had a way to see that we use asm-generic=E2=80=99s copy =
of a header in all cases except where an arch opts out.

It's really not that hard to do -- symlink asm-generic to a target
called "asm" inside an otherwise empty directory, and add that
otherwise empty directory to the -I paths just after arch/include.
Since it's searched second, it's only used if the first fails. Maybe
I'm missing something though, as this seems a bit too obvious. Perhaps
a project for another day.