+ mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch added to mm-new branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pud[s]_set()
has been added to the -mm mm-new branch.  Its filename is
     mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

The mm-new branch of mm.git is not included in linux-next

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------------------------------------------------------
From: Rohan McLure <rmclure@linux.ibm.com>
Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pud[s]_set()
Date: Fri, 19 Dec 2025 04:09:35 +1100

This reverts commit 6d144436d954 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pud_set").

Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the page
in the pte, but instead in the address of the access.

Apply this to __page_table_check_puds_set(), page_table_check_puds_set()
and the page_table_check_pud_set() wrapper macro.

[ajd@linux.ibm.com: rebase on riscv + arm64 changes, update commit message]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-3-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org>  # x86
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/arm64/include/asm/pgtable.h |    3 ++-
 arch/riscv/include/asm/pgtable.h |    4 ++--
 arch/x86/include/asm/pgtable.h   |    4 ++--
 include/linux/page_table_check.h |   12 ++++++------
 mm/page_table_check.c            |    4 ++--
 5 files changed, 14 insertions(+), 13 deletions(-)

--- a/arch/arm64/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/arch/arm64/include/asm/pgtable.h
@@ -688,7 +688,8 @@ static inline void __set_ptes_anysz(stru
 		break;
 #ifndef __PAGETABLE_PMD_FOLDED
 	case PUD_SIZE:
-		page_table_check_puds_set(mm, (pud_t *)ptep, pte_pud(pte), nr);
+		page_table_check_puds_set(mm, addr, (pud_t *)ptep,
+					  pte_pud(pte), nr);
 		break;
 #endif
 	default:
--- a/arch/riscv/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/arch/riscv/include/asm/pgtable.h
@@ -953,7 +953,7 @@ static inline void set_pmd_at(struct mm_
 static inline void set_pud_at(struct mm_struct *mm, unsigned long addr,
 				pud_t *pudp, pud_t pud)
 {
-	page_table_check_pud_set(mm, pudp, pud);
+	page_table_check_pud_set(mm, addr, pudp, pud);
 	return __set_pte_at(mm, (pte_t *)pudp, pud_pte(pud));
 }
 
@@ -1122,7 +1122,7 @@ static inline void update_mmu_cache_pud(
 static inline pud_t pudp_establish(struct vm_area_struct *vma,
 				   unsigned long address, pud_t *pudp, pud_t pud)
 {
-	page_table_check_pud_set(vma->vm_mm, pudp, pud);
+	page_table_check_pud_set(vma->vm_mm, address, pudp, pud);
 	return __pud(atomic_long_xchg((atomic_long_t *)pudp, pud_val(pud)));
 }
 
--- a/arch/x86/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/arch/x86/include/asm/pgtable.h
@@ -1221,7 +1221,7 @@ static inline void set_pmd_at(struct mm_
 static inline void set_pud_at(struct mm_struct *mm, unsigned long addr,
 			      pud_t *pudp, pud_t pud)
 {
-	page_table_check_pud_set(mm, pudp, pud);
+	page_table_check_pud_set(mm, addr, pudp, pud);
 	native_set_pud(pudp, pud);
 }
 
@@ -1372,7 +1372,7 @@ static inline pmd_t pmdp_establish(struc
 static inline pud_t pudp_establish(struct vm_area_struct *vma,
 		unsigned long address, pud_t *pudp, pud_t pud)
 {
-	page_table_check_pud_set(vma->vm_mm, pudp, pud);
+	page_table_check_pud_set(vma->vm_mm, address, pudp, pud);
 	if (IS_ENABLED(CONFIG_SMP)) {
 		return xchg(pudp, pud);
 	} else {
--- a/include/linux/page_table_check.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/include/linux/page_table_check.h
@@ -21,8 +21,8 @@ void __page_table_check_ptes_set(struct
 		unsigned int nr);
 void __page_table_check_pmds_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd,
 		unsigned int nr);
-void __page_table_check_puds_set(struct mm_struct *mm, pud_t *pudp, pud_t pud,
-		unsigned int nr);
+void __page_table_check_puds_set(struct mm_struct *mm, unsigned long addr,
+		pud_t *pudp, pud_t pud, unsigned int nr);
 void __page_table_check_pte_clear_range(struct mm_struct *mm,
 					unsigned long addr,
 					pmd_t pmd);
@@ -86,12 +86,12 @@ static inline void page_table_check_pmds
 }
 
 static inline void page_table_check_puds_set(struct mm_struct *mm,
-		pud_t *pudp, pud_t pud, unsigned int nr)
+		unsigned long addr, pud_t *pudp, pud_t pud, unsigned int nr)
 {
 	if (static_branch_likely(&page_table_check_disabled))
 		return;
 
-	__page_table_check_puds_set(mm, pudp, pud, nr);
+	__page_table_check_puds_set(mm, addr, pudp, pud, nr);
 }
 
 static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
@@ -137,7 +137,7 @@ static inline void page_table_check_pmds
 }
 
 static inline void page_table_check_puds_set(struct mm_struct *mm,
-		pud_t *pudp, pud_t pud, unsigned int nr)
+		unsigned long addr, pud_t *pudp, pud_t pud, unsigned int nr)
 {
 }
 
@@ -150,6 +150,6 @@ static inline void page_table_check_pte_
 #endif /* CONFIG_PAGE_TABLE_CHECK */
 
 #define page_table_check_pmd_set(mm, pmdp, pmd)	page_table_check_pmds_set(mm, pmdp, pmd, 1)
-#define page_table_check_pud_set(mm, pudp, pud)	page_table_check_puds_set(mm, pudp, pud, 1)
+#define page_table_check_pud_set(mm, addr, pudp, pud)	page_table_check_puds_set(mm, addr, pudp, pud, 1)
 
 #endif /* __LINUX_PAGE_TABLE_CHECK_H */
--- a/mm/page_table_check.c~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/mm/page_table_check.c
@@ -243,8 +243,8 @@ void __page_table_check_pmds_set(struct
 }
 EXPORT_SYMBOL(__page_table_check_pmds_set);
 
-void __page_table_check_puds_set(struct mm_struct *mm, pud_t *pudp, pud_t pud,
-		unsigned int nr)
+void __page_table_check_puds_set(struct mm_struct *mm, unsigned long addr,
+		pud_t *pudp, pud_t pud,	unsigned int nr)
 {
 	unsigned long stride = PUD_SIZE >> PAGE_SHIFT;
 	unsigned int i;
_

Patches currently in -mm which might be from rmclure@linux.ibm.com are

mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_set.patch
mm-page_table_check-provide-addr-parameter-to-page_table_check_ptes_set.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_clear.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear.patch
mm-provide-address-parameter-to-ptemdud_user_accessible_page.patch
powerpc-mm-implement-_user_accessible_page-for-ptes.patch
powerpc-mm-use-set_pte_at_unchecked-for-internal-usages.patch
powerpc-mm-support-page-table-check.patch