linux-kernel - Re: [PATCH -next v4] arm64: fix build warning for ARM64_MEMSTART

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Message-Id: <169116598480.145836.10755378062074393749.b4-ty@kernel.org>
Date:   Fri,  4 Aug 2023 19:10:13 +0100
From:   Will Deacon <will@...nel.org>
To:     ryan.roberts@....com, joey.gouly@....com, catalin.marinas@....com,
        bhe@...hat.com, kristina.martsenko@....com, ardb@...nel.org,
        thunder.leizhen@...wei.com, mark.rutland@....com,
        Zhang Jianhua <chris.zjh@...wei.com>, yajun.deng@...ux.dev,
        anshuman.khandual@....com
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH -next v4] arm64: fix build warning for ARM64_MEMSTART_SHIFT

On Fri, 4 Aug 2023 15:56:15 +0800, Zhang Jianhua wrote:
> When building with W=1, the following warning occurs.
> 
> arch/arm64/include/asm/kernel-pgtable.h:129:41: error: "PUD_SHIFT" is not defined, evaluates to 0 [-Werror=undef]
>   129 | #define ARM64_MEMSTART_SHIFT            PUD_SHIFT
>       |                                         ^~~~~~~~~
> arch/arm64/include/asm/kernel-pgtable.h:142:5: note: in expansion of macro ‘ARM64_MEMSTART_SHIFT’
>   142 | #if ARM64_MEMSTART_SHIFT < SECTION_SIZE_BITS
>       |     ^~~~~~~~~~~~~~~~~~~~
> 
> [...]

Applied to arm64 (for-next/mm), thanks!

[1/1] arm64: fix build warning for ARM64_MEMSTART_SHIFT
      https://git.kernel.org/arm64/c/4e0bacd65e72

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev