linux-kernel - [PATCH 10/11] arm64: mm: Call PUD/P4D ctor in __create_pgd

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Message-ID: <20250317141700.3701581-11-kevin.brodsky@arm.com>
Date: Mon, 17 Mar 2025 14:16:59 +0000
From: Kevin Brodsky <kevin.brodsky@....com>
To: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org,
	Kevin Brodsky <kevin.brodsky@....com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Andreas Larsson <andreas@...sler.com>,
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Subject: [PATCH 10/11] arm64: mm: Call PUD/P4D ctor in __create_pgd_mapping()

Constructors for PUD/P4D-level pgtables were recently introduced.
They should be called for all pgtables; make sure they are called
for special kernel mappings created by __create_pgd_mapping() too.

Signed-off-by: Kevin Brodsky <kevin.brodsky@....com>
---
 arch/arm64/mm/mmu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index accb0a33c59f..10bf39654e77 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -497,7 +497,11 @@ static phys_addr_t __pgd_pgtable_alloc(struct mm_struct *mm,
 	case TABLE_PMD:
 		BUG_ON(!pagetable_pmd_ctor(mm, ptdesc));
 		break;
-	default:
+	case TABLE_PUD:
+		pagetable_pud_ctor(ptdesc);
+		break;
+	case TABLE_P4D:
+		pagetable_p4d_ctor(ptdesc);
 		break;
 	}
 
-- 
2.47.0