+ arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz.patch added to mm-new branch

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

The patch titled
     Subject: arm64/mm: add addr parameter to __ptep_get_and_clear_anysz()
has been added to the -mm mm-new branch.  Its filename is
     arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz.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: Andrew Donnellan <ajd@linux.ibm.com>
Subject: arm64/mm: add addr parameter to __ptep_get_and_clear_anysz()
Date: Fri, 19 Dec 2025 04:09:34 +1100

To provide support for page table check on powerpc, we need to
reinstate the address parameter in several functions, including
page_table_check_{pte,pmd,pud}_clear().

In preparation for this, add the addr parameter to arm64's
__ptep_get_and_clear_anysz() and change its callsites accordingly.

Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-2-755bc151a50b@linux.ibm.com
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
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: Ingo Molnar <mingo@kernel.org>
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: Rohan McLure <rmclure@linux.ibm.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 |    5 +++--
 arch/arm64/mm/hugetlbpage.c      |    7 ++++---
 2 files changed, 7 insertions(+), 5 deletions(-)

--- a/arch/arm64/include/asm/pgtable.h~arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz
+++ a/arch/arm64/include/asm/pgtable.h
@@ -1332,6 +1332,7 @@ static inline int pmdp_test_and_clear_yo
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG */
 
 static inline pte_t __ptep_get_and_clear_anysz(struct mm_struct *mm,
+					       unsigned long address,
 					       pte_t *ptep,
 					       unsigned long pgsize)
 {
@@ -1359,7 +1360,7 @@ static inline pte_t __ptep_get_and_clear
 static inline pte_t __ptep_get_and_clear(struct mm_struct *mm,
 				       unsigned long address, pte_t *ptep)
 {
-	return __ptep_get_and_clear_anysz(mm, ptep, PAGE_SIZE);
+	return __ptep_get_and_clear_anysz(mm, address, ptep, PAGE_SIZE);
 }
 
 static inline void __clear_full_ptes(struct mm_struct *mm, unsigned long addr,
@@ -1398,7 +1399,7 @@ static inline pte_t __get_and_clear_full
 static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 					    unsigned long address, pmd_t *pmdp)
 {
-	return pte_pmd(__ptep_get_and_clear_anysz(mm, (pte_t *)pmdp, PMD_SIZE));
+	return pte_pmd(__ptep_get_and_clear_anysz(mm, address, (pte_t *)pmdp, PMD_SIZE));
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
--- a/arch/arm64/mm/hugetlbpage.c~arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz
+++ a/arch/arm64/mm/hugetlbpage.c
@@ -155,11 +155,12 @@ static pte_t get_clear_contig(struct mm_
 	pte_t pte, tmp_pte;
 	bool present;
 
-	pte = __ptep_get_and_clear_anysz(mm, ptep, pgsize);
+	pte = __ptep_get_and_clear_anysz(mm, addr, ptep, pgsize);
 	present = pte_present(pte);
 	while (--ncontig) {
 		ptep++;
-		tmp_pte = __ptep_get_and_clear_anysz(mm, ptep, pgsize);
+		addr += pgsize;
+		tmp_pte = __ptep_get_and_clear_anysz(mm, addr, ptep, pgsize);
 		if (present) {
 			if (pte_dirty(tmp_pte))
 				pte = pte_mkdirty(pte);
@@ -203,7 +204,7 @@ static void clear_flush(struct mm_struct
 	unsigned long i, saddr = addr;
 
 	for (i = 0; i < ncontig; i++, addr += pgsize, ptep++)
-		__ptep_get_and_clear_anysz(mm, ptep, pgsize);
+		__ptep_get_and_clear_anysz(mm, addr, ptep, pgsize);
 
 	if (mm == &init_mm)
 		flush_tlb_kernel_range(saddr, addr);
_

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

arm64-mm-add-addr-parameter-to-__set_ptes_anysz.patch
arm64-mm-add-addr-parameter-to-__ptep_get_and_clear_anysz.patch