Re: [PATCH v2 1/4] mm: hugetlb: Add huge page size param to huge_ptep_get_and_clear()

[Catalin Marinas]

On Mon, Feb 17, 2025 at 02:04:14PM +0000, Ryan Roberts wrote:
> In order to fix a bug, arm64 needs to be told the size of the huge page
> for which the huge_pte is being set in huge_ptep_get_and_clear().
> Provide for this by adding an `unsigned long sz` parameter to the
> function. This follows the same pattern as huge_pte_clear() and
> set_huge_pte_at().
> 
> This commit makes the required interface modifications to the core mm as
> well as all arches that implement this function (arm64, loongarch, mips,
> parisc, powerpc, riscv, s390, sparc). The actual arm64 bug will be fixed
> in a separate commit.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 66b3923a1a0f ("arm64: hugetlb: add support for PTE contiguous bit")
> Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx>

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