linux-kernel - [PATCH 03/11] m68k: mm: Call ctor/dtor for kernel PTEs

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Message-ID: <20250317141700.3701581-4-kevin.brodsky@arm.com>
Date: Mon, 17 Mar 2025 14:16:52 +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>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"David S. Miller" <davem@...emloft.net>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Mark Rutland <mark.rutland@....com>,
	Matthew Wilcox <willy@...radead.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	"Mike Rapoport (IBM)" <rppt@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Qi Zheng <zhengqi.arch@...edance.com>,
	Ryan Roberts <ryan.roberts@....com>,
	Will Deacon <will@...nel.org>,
	Yang Shi <yang@...amperecomputing.com>,
	linux-arch@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-csky@...r.kernel.org,
	linux-m68k@...ts.linux-m68k.org,
	linux-openrisc@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-s390@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	sparclinux@...r.kernel.org
Subject: [PATCH 03/11] m68k: mm: Call ctor/dtor for kernel PTEs

The generic implementation of pte_{alloc_one,free}_kernel now calls
the [cd]tor. Align the m68k/ColdFire implementation of those
functions by calling the [cd]tor explicitly.

Signed-off-by: Kevin Brodsky <kevin.brodsky@....com>
---
 arch/m68k/include/asm/mcf_pgalloc.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h
index 465a71101b7d..fc5454d37da3 100644
--- a/arch/m68k/include/asm/mcf_pgalloc.h
+++ b/arch/m68k/include/asm/mcf_pgalloc.h
@@ -7,7 +7,7 @@
 
 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
 {
-	pagetable_free(virt_to_ptdesc(pte));
+	pagetable_dtor_free(virt_to_ptdesc(pte));
 }
 
 extern const char bad_pmd_string[];
@@ -19,6 +19,10 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
 
 	if (!ptdesc)
 		return NULL;
+	if (!pagetable_pte_ctor(mm, ptdesc)) {
+		pagetable_free(ptdesc);
+		return NULL;
+	}
 
 	return ptdesc_address(ptdesc);
 }
-- 
2.47.0