From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,ziy@nvidia.com,zhengqi.arch@bytedance.com,willy@infradead.org,vishal.moola@gmail.com,thuth@redhat.com,sweettea-kernel@dorminy.me,ritesh.list@gmail.com,paulus@ozlabs.org,pasha.tatashin@soleen.com,npiggin@gmail.com,nicholas@linux.ibm.com,mpe@ellerman.id.au,mingo@kernel.org,maddy@linux.ibm.com,linmag7@gmail.com,kevin.brodsky@arm.com,jgg@ziepe.ca,guoweikang.kernel@gmail.com,donettom@linux.ibm.com,david@kernel.org,christophe.leroy@csgroup.eu,chleroy@kernel.org,apopple@nvidia.com,alexghiti@rivosinc.com,alex@ghiti.fr,ajd@linux.ibm.com,agordeev@linux.ibm.com,rmclure@linux.ibm.com,akpm@linux-foundation.org
Subject: [merged mm-stable] mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear.patch removed from -mm tree
Date: Mon, 26 Jan 2026 20:05:45 -0800 [thread overview]
Message-ID: <20260127040545.864CEC116C6@smtp.kernel.org> (raw)
The quilt patch titled
Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pte_clear()
has been removed from the -mm tree. Its filename was
mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Rohan McLure <rmclure@linux.ibm.com>
Subject: mm/page_table_check: reinstate address parameter in [__]page_table_check_pte_clear()
Date: Fri, 19 Dec 2025 04:09:40 +1100
This reverts commit aa232204c468 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pte_clear").
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.
[ajd@linux.ibm.com: rebase, fix additional occurrence and loop handling]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-8-755bc151a50b@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
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
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 +++++++----
include/linux/pgtable.h | 4 ++--
mm/page_table_check.c | 7 ++++---
6 files changed, 17 insertions(+), 13 deletions(-)
--- a/arch/arm64/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear
+++ a/arch/arm64/include/asm/pgtable.h
@@ -1342,7 +1342,7 @@ static inline pte_t __ptep_get_and_clear
switch (pgsize) {
case PAGE_SIZE:
- page_table_check_pte_clear(mm, pte);
+ page_table_check_pte_clear(mm, address, pte);
break;
case PMD_SIZE:
page_table_check_pmd_clear(mm, address, pte_pmd(pte));
--- a/arch/riscv/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear
+++ a/arch/riscv/include/asm/pgtable.h
@@ -664,7 +664,7 @@ static inline pte_t ptep_get_and_clear(s
set_pte(ptep, __pte(0));
#endif
- page_table_check_pte_clear(mm, pte);
+ page_table_check_pte_clear(mm, address, pte);
return pte;
}
--- a/arch/x86/include/asm/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear
+++ a/arch/x86/include/asm/pgtable.h
@@ -1252,7 +1252,7 @@ static inline pte_t ptep_get_and_clear(s
pte_t *ptep)
{
pte_t pte = native_ptep_get_and_clear(ptep);
- page_table_check_pte_clear(mm, pte);
+ page_table_check_pte_clear(mm, addr, pte);
return pte;
}
@@ -1268,7 +1268,7 @@ static inline pte_t ptep_get_and_clear_f
* care about updates and native needs no locking
*/
pte = native_local_ptep_get_and_clear(ptep);
- page_table_check_pte_clear(mm, pte);
+ page_table_check_pte_clear(mm, addr, pte);
} else {
pte = ptep_get_and_clear(mm, addr, ptep);
}
--- a/include/linux/page_table_check.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear
+++ a/include/linux/page_table_check.h
@@ -14,7 +14,8 @@ extern struct static_key_true page_table
extern struct page_ext_operations page_table_check_ops;
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_pte_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t pte);
void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr,
pmd_t pmd);
void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr,
@@ -45,12 +46,13 @@ static inline void page_table_check_free
__page_table_check_zero(page, order);
}
-static inline void page_table_check_pte_clear(struct mm_struct *mm, pte_t pte)
+static inline void page_table_check_pte_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t pte)
{
if (static_branch_likely(&page_table_check_disabled))
return;
- __page_table_check_pte_clear(mm, pte);
+ __page_table_check_pte_clear(mm, addr, pte);
}
static inline void page_table_check_pmd_clear(struct mm_struct *mm,
@@ -119,7 +121,8 @@ static inline void page_table_check_free
{
}
-static inline void page_table_check_pte_clear(struct mm_struct *mm, pte_t pte)
+static inline void page_table_check_pte_clear(struct mm_struct *mm,
+ unsigned long addr, pte_t pte)
{
}
--- a/include/linux/pgtable.h~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear
+++ a/include/linux/pgtable.h
@@ -634,7 +634,7 @@ static inline pte_t ptep_get_and_clear(s
{
pte_t pte = ptep_get(ptep);
pte_clear(mm, address, ptep);
- page_table_check_pte_clear(mm, pte);
+ page_table_check_pte_clear(mm, address, pte);
return pte;
}
#endif
@@ -693,7 +693,7 @@ static inline void ptep_clear(struct mm_
* No need for ptep_get_and_clear(): page table check doesn't care about
* any bits that could have been set by HW concurrently.
*/
- page_table_check_pte_clear(mm, pte);
+ page_table_check_pte_clear(mm, addr, pte);
}
#ifdef CONFIG_GUP_GET_PXX_LOW_HIGH
--- a/mm/page_table_check.c~mm-page_table_check-reinstate-address-parameter-in-page_table_check_pte_clear
+++ a/mm/page_table_check.c
@@ -145,7 +145,8 @@ void __page_table_check_zero(struct page
rcu_read_unlock();
}
-void __page_table_check_pte_clear(struct mm_struct *mm, pte_t pte)
+void __page_table_check_pte_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t pte)
{
if (&init_mm == mm)
return;
@@ -209,7 +210,7 @@ void __page_table_check_ptes_set(struct
page_table_check_pte_flags(pte);
for (i = 0; i < nr; i++)
- __page_table_check_pte_clear(mm, ptep_get(ptep + i));
+ __page_table_check_pte_clear(mm, addr + PAGE_SIZE * i, ptep_get(ptep + i));
if (pte_user_accessible_page(pte))
page_table_check_set(pte_pfn(pte), nr, pte_write(pte));
}
@@ -275,7 +276,7 @@ void __page_table_check_pte_clear_range(
if (WARN_ON(!ptep))
return;
for (i = 0; i < PTRS_PER_PTE; i++) {
- __page_table_check_pte_clear(mm, ptep_get(ptep));
+ __page_table_check_pte_clear(mm, addr, ptep_get(ptep));
addr += PAGE_SIZE;
ptep++;
}
_
Patches currently in -mm which might be from rmclure@linux.ibm.com are
reply other threads:[~2026-01-27 4:05 UTC|newest]
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