linux-kernel - Re: [PATCH] arm64/mm: Drop SWAPPER_INIT_MAP

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Date:   Mon, 14 Jun 2021 15:08:35 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        aisheng.dong@....com
Subject: Re: [PATCH] arm64/mm: Drop SWAPPER_INIT_MAP_SIZE

On Mon, Jun 14, 2021 at 03:40:11PM +0530, Anshuman Khandual wrote:
> The commit cdef5f6e9e0e ("arm64: mm: allocate pagetables anywhere") had
> dropped the last reference to SWAPPER_INIT_MAP_SIZE. Hence just clean up.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> ---
> This applies on v5.13-rc6.

Dong Aisheng had a patch to do this, along with a few other cleanup
patches:

https://lore.kernel.org/r/20210518101405.1048860-1-aisheng.dong@nxp.com

Thanks,
Mark.

> 
>  arch/arm64/include/asm/kernel-pgtable.h | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/kernel-pgtable.h b/arch/arm64/include/asm/kernel-pgtable.h
> index a848da2b4d90..1260187adb31 100644
> --- a/arch/arm64/include/asm/kernel-pgtable.h
> +++ b/arch/arm64/include/asm/kernel-pgtable.h
> @@ -100,9 +100,6 @@
>  #define SWAPPER_TABLE_SHIFT	PMD_SHIFT
>  #endif
>  
> -/* The size of the initial kernel direct mapping */
> -#define SWAPPER_INIT_MAP_SIZE	(_AC(1, UL) << SWAPPER_TABLE_SHIFT)
> -
>  /*
>   * Initial memory map attributes.
>   */
> -- 
> 2.20.1
>