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From:   Arnd Bergmann <arnd@arndb.de>
Date:   Tue, 17 Apr 2018 21:56:02 +0200
Message-ID: <CAK8P3a3SVhW1ByQOtxw7JG8i3wWU5opdycfSCTbW=GCFvBJmQg@mail.gmail.com>
Subject: Re: [PATCHv3 06/11] asm-generic: mm_hooks: allow hooks to be
 overridden individually
To:     Mark Rutland <mark.rutland@arm.com>
Cc:     Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Catalin Marinas <catalin.marinas@arm.com>, cdall@kernel.org,
        drjones@redhat.com, kvmarm@lists.cs.columbia.edu,
        linux-arch <linux-arch@vger.kernel.org>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>,
        Suzuki K Poulose <suzuki.poulose@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Adam Wallis <awallis@codeaurora.org>,
        Kernel Hardening <kernel-hardening@lists.openwall.com>
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On Tue, Apr 17, 2018 at 8:37 PM, Mark Rutland <mark.rutland@arm.com> wrote:
> Currently, an architecture must either implement all of the mm hooks
> itself, or use all of those provided by the asm-generic implementation.
> When an architecture only needs to override a single hook, it must copy
> the stub implementations from the asm-generic version.
>
> To avoid this repetition, allow each hook to be overridden indiviually,
> by placing each under an #ifndef block. As architectures providing their
> own hooks can't include this file today, this shouldn't adversely affect
> any existing hooks.
>
> Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: linux-arch@vger.kernel.org

Acked-by: Arnd Bergmann <arnd@arndb.de>