[PATCH V2] arm64/mm: Add pud_sect_supported()

[Catalin Marinas]

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 at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-kernel at vger.kernel.org
> Suggested-by: Mark Rutland <mark.rutland at arm.com>
> Signed-off-by: Anshuman Khandual <anshuman.khandual at arm.com>

Assuming that you tested the corresponding configurations,

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