linux-kernel - Re: [PATCH V2] arm64/mm: Add pud_sect

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Message-ID: <YUirurhvmBPCOsS+@arm.com>
Date:   Mon, 20 Sep 2021 16:41:46 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, mark.rutland@....com,
        suzuki.poulose@....com, Will Deacon <will@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] arm64/mm: Add pud_sect_supported()

On Mon, Sep 20, 2021 at 02:59:31PM +0530, Anshuman Khandual wrote:
> Section mapping at PUD level is supported only on 4K pages and currently it
> gets verified with explicit #ifdef or IS_ENABLED() constructs. This adds a
> new helper pud_sect_supported() for this purpose, which particularly cleans
> up the HugeTLB code path. It updates relevant switch statements with checks
> for __PAGETABLE_PMD_FOLDED in order to avoid build failures caused with two
> identical switch case values in those code blocks.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Suggested-by: Mark Rutland <mark.rutland@....com>
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>

Assuming that you tested the corresponding configurations,

Reviewed-by: Catalin Marinas <catalin.marinas@....com>