Subject: [PATCH v11 03/11] mm: Provide addr parameter to page_table_check_pte_set()

From: Rohan McLure <[email-masked]>
Date: Thu, 28 Mar 2024 15:55:23 +1100

To provide support for powerpc platforms, provide an addr parameter to
the page_table_check_pte_set() routine. This parameter is needed on some
powerpc platforms which do not encode whether a mapping is for user or
kernel in the pte. On such platforms, this can be inferred form the
addr parameter.

Signed-off-by: Rohan McLure <[email-masked]>
---
 arch/arm64/include/asm/pgtable.h |  2 +-
 arch/riscv/include/asm/pgtable.h |  2 +-
 include/linux/page_table_check.h | 12 +++++++-----
 include/linux/pgtable.h          |  2 +-
 mm/page_table_check.c            |  4 ++--
 5 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 995cc6213d0d..b3938f80a1b6 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -376,7 +376,7 @@ static inline void __set_ptes(struct mm_struct *mm,
 			      unsigned long __always_unused addr,
 			      pte_t *ptep, pte_t pte, unsigned int nr)
 {
-	page_table_check_ptes_set(mm, ptep, pte, nr);
+	page_table_check_ptes_set(mm, addr, ptep, pte, nr);
 	__sync_cache_and_tags(pte, nr);
 
 	for (;;) {
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 7b4053ff597e..a153d3d143d2 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -532,7 +532,7 @@ static inline void __set_pte_at(pte_t *ptep, pte_t pteval)
 static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
 		pte_t *ptep, pte_t pteval, unsigned int nr)
 {
-	page_table_check_ptes_set(mm, ptep, pteval, nr);
+	page_table_check_ptes_set(mm, addr, ptep, pteval, nr);
 
 	for (;;) {
 		__set_pte_at(ptep, pteval);
diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h
index 5855d690c48a..9243c920ed02 100644
--- a/include/linux/page_table_check.h
+++ b/include/linux/page_table_check.h
@@ -17,8 +17,8 @@ void __page_table_check_zero(struct page *page, unsigned int order);
 void __page_table_check_pte_clear(struct mm_struct *mm, pte_t pte);
 void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd);
 void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud);
-void __page_table_check_ptes_set(struct mm_struct *mm, pte_t *ptep, pte_t pte,
-		unsigned int nr);
+void __page_table_check_ptes_set(struct mm_struct *mm, unsigned long addr,
+				 pte_t *ptep, pte_t pte, unsigned int nr);
 void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr,
 				pmd_t *pmdp, pmd_t pmd);
 void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
@@ -68,12 +68,13 @@ static inline void page_table_check_pud_clear(struct mm_struct *mm, pud_t pud)
 }
 
 static inline void page_table_check_ptes_set(struct mm_struct *mm,
-		pte_t *ptep, pte_t pte, unsigned int nr)
+					     unsigned long addr, pte_t *ptep,
+					     pte_t pte, unsigned int nr)
 {
 	if (static_branch_likely(&page_table_check_disabled))
 		return;
 
-	__page_table_check_ptes_set(mm, ptep, pte, nr);
+	__page_table_check_ptes_set(mm, addr, ptep, pte, nr);
 }
 
 static inline void page_table_check_pmd_set(struct mm_struct *mm,
@@ -129,7 +130,8 @@ static inline void page_table_check_pud_clear(struct mm_struct *mm, pud_t pud)
 }
 
 static inline void page_table_check_ptes_set(struct mm_struct *mm,
-		pte_t *ptep, pte_t pte, unsigned int nr)
+					     unsigned long addr, pte_t *ptep,
+					     pte_t pte, unsigned int nr)
 {
 }
 
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 85fc7554cd52..b2b4c1160d4a 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -264,7 +264,7 @@ static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr)
 static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
 		pte_t *ptep, pte_t pte, unsigned int nr)
 {
-	page_table_check_ptes_set(mm, ptep, pte, nr);
+	page_table_check_ptes_set(mm, addr, ptep, pte, nr);
 
 	arch_enter_lazy_mmu_mode();
 	for (;;) {
diff --git a/mm/page_table_check.c b/mm/page_table_check.c
index 7b9d7b45505d..3a338fee6d00 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c
@@ -182,8 +182,8 @@ void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud)
 }
 EXPORT_SYMBOL(__page_table_check_pud_clear);
 
-void __page_table_check_ptes_set(struct mm_struct *mm, pte_t *ptep, pte_t pte,
-		unsigned int nr)
+void __page_table_check_ptes_set(struct mm_struct *mm, unsigned long addr,
+				 pte_t *ptep, pte_t pte, unsigned int nr)
 {
 	unsigned int i;
 
-- 
2.44.0