linux-kernel - Re: [PATCH 1/3] arm64:add missing CONFIG_STRICT_KERNEL_RWX for mark_rodata

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Message-ID: <20180529154523.GK17159@arm.com>
Date:   Tue, 29 May 2018 16:45:24 +0100
From:   Will Deacon <will.deacon@....com>
To:     nixiaoming <nixiaoming@...wei.com>
Cc:     catalin.marinas@....com, ard.biesheuvel@...aro.org,
        marc.zyngier@....com, james.morse@....com,
        kristina.martsenko@....com, steve.capper@....com,
        tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        akpm@...ux-foundation.org, vbabka@...e.cz, mhocko@...e.com,
        dave.hansen@...ux.intel.com, dan.j.williams@...el.com,
        kirill.shutemov@...ux.intel.com, zhang.jia@...ux.alibaba.com,
        schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, x86@...nel.org,
        linux-s390@...r.kernel.org
Subject: Re: [PATCH 1/3] arm64:add missing CONFIG_STRICT_KERNEL_RWX for
 mark_rodata_ro

On Tue, May 29, 2018 at 09:36:15PM +0800, nixiaoming wrote:
> mark_rodata_ro is only called by the function mark_readonly when
> CONFIG_STRICT_KERNEL_RWX=y,
> if CONFIG_STRICT_KERNEL_RWX is not set
> a compile warning may be triggered: unused function

How are you achieving this configuration? In our Kconfig we select this
unconditionally.

Will