From: Rohan McLure <rmcl...@linux.ibm.com>
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.
Signed-off-by: Rohan McLure <rmcl...@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatas...@soleen.com>
[ajd: rebase on riscv changes, remove riscv commit message comment]
Signed-off-by: Andrew Donnellan <a...@linux.ibm.com>
---
v13: remove inaccurate comment on riscv in the commit message
v14: fix an x86 usage I missed (found by akpm)
---
arch/arm64/include/asm/pgtable.h | 2 +-
arch/riscv/include/asm/pgtable.h | 2 +-
arch/x86/include/asm/pgtable.h | 4 ++--
include/linux/page_table_check.h | 11 +++++++----
mm/page_table_check.c | 3 ++-
5 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index d3b538be1500..805aec562d07 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -669,7 +669,7 @@ static inline void set_pmd_at(struct mm_struct *mm,
unsigned long addr,
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, addr, (pte_t *)pudp, pud_pte(pud),
PUD_SIZE >> PAGE_SHIFT);
}
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 428e48e5f57d..56e6ad5179c9 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -831,7 +831,7 @@ static inline void set_pmd_at(struct mm_struct *mm,
unsigned long addr,
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));
}
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 7bd6bd6df4a1..d1ed35779948 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -1287,7 +1287,7 @@ static inline void set_pmd_at(struct mm_struct *mm,
unsigned long addr,
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);
}
@@ -1440,7 +1440,7 @@ static inline pmd_t pmdp_establish(struct vm_area_struct
*vma,
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 {
diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h
index 6722941c7cb8..d188428512f5 100644
--- a/include/linux/page_table_check.h
+++ b/include/linux/page_table_check.h
@@ -20,7 +20,8 @@ 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_pmd_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd);
-void __page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp, pud_t pud);
+void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
+ pud_t *pudp, pud_t pud);
void __page_table_check_pte_clear_range(struct mm_struct *mm,
unsigned long addr,
pmd_t pmd);
@@ -83,13 +84,14 @@ static inline void page_table_check_pmd_set(struct
mm_struct *mm, pmd_t *pmdp,
__page_table_check_pmd_set(mm, pmdp, pmd);
}
-static inline void page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp,
+static inline void page_table_check_pud_set(struct mm_struct *mm,
+ unsigned long addr, pud_t *pudp,
pud_t pud)
{
if (static_branch_likely(&page_table_check_disabled))
return;
- __page_table_check_pud_set(mm, pudp, pud);
+ __page_table_check_pud_set(mm, addr, pudp, pud);
}
static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
@@ -134,7 +136,8 @@ static inline void page_table_check_pmd_set(struct
mm_struct *mm, pmd_t *pmdp,
{
}
-static inline void page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp,
+static inline void page_table_check_pud_set(struct mm_struct *mm,
+ unsigned long addr, pud_t *pudp,
pud_t pud)
{
}
diff --git a/mm/page_table_check.c b/mm/page_table_check.c
index 68109ee93841..893555860d91 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c
@@ -233,7 +233,8 @@ void __page_table_check_pmd_set(struct mm_struct *mm, pmd_t
*pmdp, pmd_t pmd)
}
EXPORT_SYMBOL(__page_table_check_pmd_set);
-void __page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp, pud_t pud)
+void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
+ pud_t *pudp, pud_t pud)
{
if (&init_mm == mm)
return;
--
2.49.0
