From: Anshuman Khandual <anshuman.khandual@arm.com>
Date: Fri, 21 Feb 2025 04:42:21 +0000 (+0530)
Subject: arm64/ptdump: Test PMD_TYPE_MASK for block mapping
X-Git-Tag: v6.15-rc1~201^2~2^12~6
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f5e93819e2cc8433061e6f5787fffe8d8cdf9c35;p=thirdparty%2Flinux.git

arm64/ptdump: Test PMD_TYPE_MASK for block mapping

Test given page table entries against PMD_TYPE_SECT on PMD_TYPE_MASK mask
bits for identifying block mappings in stage 1 page tables.

Cc: Will Deacon <will@kernel.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250221044227.1145393-3-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
index 688fbe0271ca4..8cec0da4cff28 100644
--- a/arch/arm64/mm/ptdump.c
+++ b/arch/arm64/mm/ptdump.c
@@ -80,8 +80,8 @@ static const struct ptdump_prot_bits pte_bits[] = {
 		.set	= "CON",
 		.clear	= "   ",
 	}, {
-		.mask	= PTE_TABLE_BIT | PTE_VALID,
-		.val	= PTE_VALID,
+		.mask	= PMD_TYPE_MASK,
+		.val	= PMD_TYPE_SECT,
 		.set	= "BLK",
 		.clear	= "   ",
 	}, {