Although the comment clearly states about PGD table's alignment requirement
(when PA_BITS = 52) but the subsequent BUILD_BUG_ON() tests size comparison
to 64 bytes instead. So change it as an actual alignment test.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
 arch/arm64/mm/pgd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/pgd.c b/arch/arm64/mm/pgd.c
index 8160cff35089..bf5110b91e2f 100644
--- a/arch/arm64/mm/pgd.c
+++ b/arch/arm64/mm/pgd.c
@@ -56,7 +56,7 @@ void __init pgtable_cache_init(void)
 	 * With 52-bit physical addresses, the architecture requires the
 	 * top-level table to be aligned to at least 64 bytes.
 	 */
-	BUILD_BUG_ON(PGD_SIZE < 64);
+	BUILD_BUG_ON(!IS_ALIGNED(PGD_SIZE, 64));
 #endif
 
 	/*
-- 
2.30.2

On Fri, 31 Oct 2025 07:12:55 +0000, Anshuman Khandual wrote:
> Although the comment clearly states about PGD table's alignment requirement
> (when PA_BITS = 52) but the subsequent BUILD_BUG_ON() tests size comparison
> to 64 bytes instead. So change it as an actual alignment test.
> 
> 

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64/mm: Ensure PGD_SIZE is aligned to 64 bytes when PA_BITS = 52
      https://git.kernel.org/arm64/c/e2e21a9757b9

-- 
Catalin