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Message-Id: <20251219-pgtable_check_v18rebase-v18-5-755bc151a50b@linux.ibm.com>
Date: Fri, 19 Dec 2025 04:09:37 +1100
From: Andrew Donnellan <ajd@...ux.ibm.com>
To: linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
Pasha Tatashin <pasha.tatashin@...een.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Madhavan Srinivasan <maddy@...ux.ibm.com>,
Nicholas Piggin <npiggin@...il.com>, Rohan McLure <rmclure@...dia.com>,
Christophe Leroy <chleroy@...nel.org>
Cc: Alexandre Ghiti <alex@...ti.fr>, x86@...nel.org,
Nicholas Miehlbradt <nicholas@...ux.ibm.com>,
Sweet Tea Dorminy <sweettea-kernel@...miny.me>,
Andrew Donnellan <andrew+kernel@...nellan.id.au>,
Srish Srinivasan <ssrish@...ux.ibm.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-riscv@...ts.infradead.org
Subject: [PATCH v18 05/12] mm/page_table_check: Provide addr parameter to
page_table_check_ptes_set()
From: Rohan McLure <rmclure@...ux.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@...ux.ibm.com: rebase on arm64 + riscv changes, update commit message]
Signed-off-by: Rohan McLure <rmclure@...ux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@...een.com>
Acked-by: Alexandre Ghiti <alexghiti@...osinc.com> # riscv
Signed-off-by: Andrew Donnellan <ajd@...ux.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 4b580d6246f5a1c8f859bf79665419bbcd8c7cd3..d1dd0266bb0c946442df88594cc39e958185af0a 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -681,7 +681,7 @@ 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 3fea1d07f7470a04fdc9a6f581d21667e35e0e2a..89abba40e3e426c00e6964bdf135042777319588 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -631,7 +631,7 @@ 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 cf7c28d8d468c026cb5278435a64fbcf0fe9260e..66e10923841691a59620da8d17f7bb7b09e6a6d3 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 2f0dd3a4ace1acd665f229d4ea2a67187fd4d2b9..496873f44f67b73fc32940c956fd5265b748faad 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -429,7 +429,7 @@ 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 86dc4e4d1dad12fe5d9d86905234b009257586d5..2871d9c453682ba922b2fcf532cb6a7d867ad952 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c
@@ -196,8 +196,8 @@ static void page_table_check_pte_flags(pte_t 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;
--
2.52.0
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