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

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Message-ID: <8f6b7735-5746-4bd0-b248-677638d54c7c@arm.com>
Date: Wed, 24 Jul 2024 08:52:39 +0100
From: Ryan Roberts <ryan.roberts@....com>
To: Anshuman Khandual <anshuman.khandual@....com>,
 linux-arm-kernel@...ts.infradead.org
Cc: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64/mm: Drop PMD_SECT_VALID

On 24/07/2024 05:47, Anshuman Khandual wrote:
> This just drops off the macro PMD_SECT_VALID which remains unused. Because
> macro PMD_TYPE_SECT with same value (_AT(pmdval_t, 1) << 0), gets used for
> creating or updating given block mappings.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Ryan Roberts <ryan.roberts@....com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>

Reviewed-by: Ryan Roberts <ryan.roberts@....com>

> ---
>  arch/arm64/include/asm/pgtable-hwdef.h | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
> index 1f60aa1bc750..86e803ea8885 100644
> --- a/arch/arm64/include/asm/pgtable-hwdef.h
> +++ b/arch/arm64/include/asm/pgtable-hwdef.h
> @@ -135,7 +135,6 @@
>  /*
>   * Section
>   */
> -#define PMD_SECT_VALID		(_AT(pmdval_t, 1) << 0)
>  #define PMD_SECT_USER		(_AT(pmdval_t, 1) << 6)		/* AP[1] */
>  #define PMD_SECT_RDONLY		(_AT(pmdval_t, 1) << 7)		/* AP[2] */
>  #define PMD_SECT_S		(_AT(pmdval_t, 3) << 8)