linux-kernel - Re: [PATCH v1 2/3] zinc: Introduce minimal cryptography library

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Date:   Tue, 7 Aug 2018 18:51:39 -0700
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-arch@...r.kernel.org, Eric Biggers <ebiggers3@...il.com>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Netdev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Andrew Lutomirski <luto@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Samuel Neves <sneves@....uc.pt>,
        "Daniel J . Bernstein" <djb@...yp.to>,
        Tanja Lange <tanja@...erelliptic.org>,
        Jean-Philippe Aumasson <jeanphilippe.aumasson@...il.com>,
        Karthikeyan Bhargavan <karthik.bhargavan@...il.com>
Subject: Re: [PATCH v1 2/3] zinc: Introduce minimal cryptography library

On Tue, Aug 7, 2018 at 6:49 PM Andy Lutomirski <luto@...capital.net> wrote:
> I really wish we had a way to see that we use asm-generic’s 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.