From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,will@kernel.org,sweettea-kernel@dorminy.me,pasha.tatashin@soleen.com,nicholas@linux.ibm.com,mingo@kernel.org,maddy@linux.ibm.com,christophe.leroy@csgroup.eu,catalin.marinas@arm.com,ajd@linux.ibm.com,rmclure@linux.ibm.com,akpm@linux-foundation.org
Subject: + mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch added to mm-new branch
Date: Wed, 13 Aug 2025 16:05:55 -0700 [thread overview]
Message-ID: <20250813230555.F0D04C4CEEB@smtp.kernel.org> (raw)
The patch titled
Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pud[s]_set()
has been added to the -mm mm-new branch. Its filename is
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.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.
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Rohan McLure <rmclure@linux.ibm.com>
Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pud[s]_set()
Date: Wed, 13 Aug 2025 16:26:04 +1000
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.
Apply this to __page_table_check_puds_set(), page_table_check_puds_set()
and the page_table_check_pud_set() wrapper macro.
[ajd@linux.ibm.com: rebase on riscv + arm64 changes, update commit message]
Link: https://lkml.kernel.org/r/20250813062614.51759-4-ajd@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> [x86]
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/arm64/include/asm/pgtable.h | 3 ++-
arch/riscv/include/asm/pgtable.h | 4 ++--
arch/x86/include/asm/pgtable.h | 4 ++--
include/linux/page_table_check.h | 12 ++++++------
mm/page_table_check.c | 4 ++--
5 files changed, 14 insertions(+), 13 deletions(-)
--- a/arch/arm64/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/arch/arm64/include/asm/pgtable.h
@@ -713,7 +713,8 @@ static inline void __set_ptes_anysz(stru
break;
#ifndef __PAGETABLE_PMD_FOLDED
case PUD_SIZE:
- page_table_check_puds_set(mm, (pud_t *)ptep, pte_pud(pte), nr);
+ page_table_check_puds_set(mm, addr, (pud_t *)ptep,
+ pte_pud(pte), nr);
break;
#endif
default:
--- a/arch/riscv/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/arch/riscv/include/asm/pgtable.h
@@ -812,7 +812,7 @@ static inline void set_pmd_at(struct mm_
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));
}
@@ -958,7 +958,7 @@ static inline void update_mmu_cache_pud(
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);
return __pud(atomic_long_xchg((atomic_long_t *)pudp, pud_val(pud)));
}
--- a/arch/x86/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/arch/x86/include/asm/pgtable.h
@@ -1220,7 +1220,7 @@ static inline void set_pmd_at(struct mm_
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);
}
@@ -1371,7 +1371,7 @@ static inline pmd_t pmdp_establish(struc
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 {
--- a/include/linux/page_table_check.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/include/linux/page_table_check.h
@@ -21,8 +21,8 @@ void __page_table_check_ptes_set(struct
unsigned int nr);
void __page_table_check_pmds_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd,
unsigned int nr);
-void __page_table_check_puds_set(struct mm_struct *mm, pud_t *pudp, pud_t pud,
- unsigned int nr);
+void __page_table_check_puds_set(struct mm_struct *mm, unsigned long addr,
+ pud_t *pudp, pud_t pud, unsigned int nr);
void __page_table_check_pte_clear_range(struct mm_struct *mm,
unsigned long addr,
pmd_t pmd);
@@ -86,12 +86,12 @@ static inline void page_table_check_pmds
}
static inline void page_table_check_puds_set(struct mm_struct *mm,
- pud_t *pudp, pud_t pud, unsigned int nr)
+ unsigned long addr, pud_t *pudp, pud_t pud, unsigned int nr)
{
if (static_branch_likely(&page_table_check_disabled))
return;
- __page_table_check_puds_set(mm, pudp, pud, nr);
+ __page_table_check_puds_set(mm, addr, pudp, pud, nr);
}
static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
@@ -137,7 +137,7 @@ static inline void page_table_check_pmds
}
static inline void page_table_check_puds_set(struct mm_struct *mm,
- pud_t *pudp, pud_t pud, unsigned int nr)
+ unsigned long addr, pud_t *pudp, pud_t pud, unsigned int nr)
{
}
@@ -150,6 +150,6 @@ static inline void page_table_check_pte_
#endif /* CONFIG_PAGE_TABLE_CHECK */
#define page_table_check_pmd_set(mm, pmdp, pmd) page_table_check_pmds_set(mm, pmdp, pmd, 1)
-#define page_table_check_pud_set(mm, pudp, pud) page_table_check_puds_set(mm, pudp, pud, 1)
+#define page_table_check_pud_set(mm, addr, pudp, pud) page_table_check_puds_set(mm, addr, pudp, pud, 1)
#endif /* __LINUX_PAGE_TABLE_CHECK_H */
--- a/mm/page_table_check.c~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set
+++ a/mm/page_table_check.c
@@ -236,8 +236,8 @@ void __page_table_check_pmds_set(struct
}
EXPORT_SYMBOL(__page_table_check_pmds_set);
-void __page_table_check_puds_set(struct mm_struct *mm, pud_t *pudp, pud_t pud,
- unsigned int nr)
+void __page_table_check_puds_set(struct mm_struct *mm, unsigned long addr,
+ pud_t *pudp, pud_t pud, unsigned int nr)
{
unsigned long stride = PUD_SIZE >> PAGE_SHIFT;
unsigned int i;
_
Patches currently in -mm which might be from rmclure@linux.ibm.com are
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_set.patch
mm-page_table_check-provide-addr-parameter-to-page_table_check_ptes_set.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_clear.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pmd_clear.patch
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear.patch
mm-provide-address-parameter-to-ptemdud_user_accessible_page.patch
powerpc-mm-add-pud_pfn-stub.patch
powerpc-mm-implement-_user_accessible_page-for-ptes.patch
powerpc-mm-use-set_pte_at_unchecked-for-internal-usages.patch
powerpc-mm-support-page-table-check.patch
next reply other threads:[~2025-08-13 23:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-13 23:05 Andrew Morton [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-01-16 0:25 + mm-page_table_check-reinstate-address-parameter-in-page_table_check_pud_set.patch added to mm-new branch Andrew Morton
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