From: Andrew Donnellan <ajd@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, x86@kernel.org,
linux-riscv@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, pasha.tatashin@soleen.com,
sweettea-kernel@dorminy.me, nicholas@linux.ibm.com,
christophe.leroy@csgroup.eu, alexghiti@rivosinc.com
Subject: [PATCH v17 05/12] mm/page_table_check: Provide addr parameter to page_table_check_ptes_set()
Date: Tue, 9 Sep 2025 19:13:28 +1000 [thread overview]
Message-ID: <20250909091335.183439-6-ajd@linux.ibm.com> (raw)
In-Reply-To: <20250909091335.183439-1-ajd@linux.ibm.com>
From: Rohan McLure <rmclure@linux.ibm.com>
To provide support for powerpc platforms, provide an addr parameter to
the __page_table_check_ptes_set() and page_table_check_ptes_set() routines.
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 from the addr parameter.
[ajd@linux.ibm.com: rebase on arm64 + riscv changes, update commit message]
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
---
v15: rebase, amend commit message
---
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 9fe3af8b4cad..06ea6a4f300b 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -706,7 +706,7 @@ static inline void __set_ptes_anysz(struct mm_struct *mm, unsigned long addr,
switch (pgsize) {
case PAGE_SIZE:
- page_table_check_ptes_set(mm, ptep, pte, nr);
+ page_table_check_ptes_set(mm, addr, ptep, pte, nr);
break;
case PMD_SIZE:
page_table_check_pmds_set(mm, addr, (pmd_t *)ptep,
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 98e56d4ff840..bef95776504d 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -560,7 +560,7 @@ static inline void __set_pte_at(struct mm_struct *mm, 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(mm, ptep, pteval);
diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h
index cf7c28d8d468..66e109238416 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_pmds_set(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t pmd, unsigned int nr);
void __page_table_check_puds_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_pmds_set(struct mm_struct *mm,
@@ -127,7 +128,8 @@ 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 94249e671a7e..a422fdf31ffb 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -289,7 +289,7 @@ 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);
for (;;) {
set_pte(ptep, pte);
diff --git a/mm/page_table_check.c b/mm/page_table_check.c
index 09258f2ad93f..0957767a2940 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c
@@ -193,8 +193,8 @@ static inline void page_table_check_pte_flags(pte_t pte)
WARN_ON_ONCE(swap_cached_writable(pte_to_swp_entry(pte)));
}
-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;
--
2.51.0
next prev parent reply other threads:[~2025-09-09 9:15 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-09 9:13 [PATCH v17 00/12] Support page table check on PowerPC Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 01/12] arm64/mm: Add addr parameter to __set_ptes_anysz() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 02/12] arm64/mm: Add addr parameter to __ptep_get_and_clear_anysz() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 03/12] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pud[s]_set() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 04/12] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pmd[s]_set() Andrew Donnellan
2025-09-09 9:13 ` Andrew Donnellan [this message]
2025-09-09 9:13 ` [PATCH v17 06/12] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pud_clear() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 07/12] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pmd_clear() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 08/12] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pte_clear() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 09/12] mm: Provide address parameter to p{te,md,ud}_user_accessible_page() Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 10/12] powerpc: mm: Implement *_user_accessible_page() for ptes Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 11/12] powerpc: mm: Use set_pte_at_unchecked() for internal usages Andrew Donnellan
2025-09-09 9:13 ` [PATCH v17 12/12] powerpc: mm: Support page table check Andrew Donnellan
2025-09-25 22:42 ` [PATCH v17 00/12] Support page table check on PowerPC Andrew Donnellan
2025-09-25 23:17 ` Andrew Morton
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