The patch titled
Subject: mm: convert page_table_check_pte_set() to page_table_check_ptes_set()
has been added to the -mm mm-unstable branch. Its filename is
mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: convert page_table_check_pte_set() to page_table_check_ptes_set()
Date: Wed, 2 Aug 2023 16:13:30 +0100
Tell the page table check how many PTEs & PFNs we want it to check.
Link: https://lkml.kernel.org/r/20230802151406.3735276-3-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Acked-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Reviewed-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/pgtable.h | 2 +-
arch/riscv/include/asm/pgtable.h | 2 +-
arch/x86/include/asm/pgtable.h | 2 +-
include/linux/page_table_check.h | 13 +++++++------
mm/page_table_check.c | 16 +++++++++-------
5 files changed, 19 insertions(+), 16 deletions(-)
--- a/arch/arm64/include/asm/pgtable.h~mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set
+++ a/arch/arm64/include/asm/pgtable.h
@@ -348,7 +348,7 @@ static inline void __set_pte_at(struct m
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
- page_table_check_pte_set(mm, ptep, pte);
+ page_table_check_ptes_set(mm, ptep, pte, 1);
return __set_pte_at(mm, addr, ptep, pte);
}
--- a/arch/riscv/include/asm/pgtable.h~mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set
+++ a/arch/riscv/include/asm/pgtable.h
@@ -499,7 +499,7 @@ static inline void __set_pte_at(struct m
static inline void set_pte_at(struct mm_struct *mm,
unsigned long addr, pte_t *ptep, pte_t pteval)
{
- page_table_check_pte_set(mm, ptep, pteval);
+ page_table_check_ptes_set(mm, ptep, pteval, 1);
__set_pte_at(mm, addr, ptep, pteval);
}
--- a/arch/x86/include/asm/pgtable.h~mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set
+++ a/arch/x86/include/asm/pgtable.h
@@ -1023,7 +1023,7 @@ static inline pud_t native_local_pudp_ge
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
- page_table_check_pte_set(mm, ptep, pte);
+ page_table_check_ptes_set(mm, ptep, pte, 1);
set_pte(ptep, pte);
}
--- a/include/linux/page_table_check.h~mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set
+++ a/include/linux/page_table_check.h
@@ -17,7 +17,8 @@ void __page_table_check_zero(struct page
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_pte_set(struct mm_struct *mm, pte_t *ptep, 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_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_pte_clear_range(struct mm_struct *mm,
@@ -64,13 +65,13 @@ static inline void page_table_check_pud_
__page_table_check_pud_clear(mm, pud);
}
-static inline void page_table_check_pte_set(struct mm_struct *mm, pte_t *ptep,
- pte_t pte)
+static inline void page_table_check_ptes_set(struct mm_struct *mm,
+ pte_t *ptep, pte_t pte, unsigned int nr)
{
if (static_branch_likely(&page_table_check_disabled))
return;
- __page_table_check_pte_set(mm, ptep, pte);
+ __page_table_check_ptes_set(mm, ptep, pte, nr);
}
static inline void page_table_check_pmd_set(struct mm_struct *mm, pmd_t *pmdp,
@@ -123,8 +124,8 @@ static inline void page_table_check_pud_
{
}
-static inline void page_table_check_pte_set(struct mm_struct *mm, pte_t *ptep,
- pte_t pte)
+static inline void page_table_check_ptes_set(struct mm_struct *mm,
+ pte_t *ptep, pte_t pte, unsigned int nr)
{
}
--- a/mm/page_table_check.c~mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set
+++ a/mm/page_table_check.c
@@ -182,18 +182,20 @@ void __page_table_check_pud_clear(struct
}
EXPORT_SYMBOL(__page_table_check_pud_clear);
-void __page_table_check_pte_set(struct mm_struct *mm, pte_t *ptep, pte_t pte)
+void __page_table_check_ptes_set(struct mm_struct *mm, pte_t *ptep, pte_t pte,
+ unsigned int nr)
{
+ unsigned int i;
+
if (&init_mm == mm)
return;
- __page_table_check_pte_clear(mm, ptep_get(ptep));
- if (pte_user_accessible_page(pte)) {
- page_table_check_set(pte_pfn(pte), PAGE_SIZE >> PAGE_SHIFT,
- pte_write(pte));
- }
+ for (i = 0; i < nr; i++)
+ __page_table_check_pte_clear(mm, ptep_get(ptep + i));
+ if (pte_user_accessible_page(pte))
+ page_table_check_set(pte_pfn(pte), nr, pte_write(pte));
}
-EXPORT_SYMBOL(__page_table_check_pte_set);
+EXPORT_SYMBOL(__page_table_check_ptes_set);
void __page_table_check_pmd_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd)
{
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-drop-per-vma-lock-when-returning-vm_fault_retry-or-vm_fault_completed-fix.patch
rmap-pass-the-folio-to-__page_check_anon_rmap.patch
highmem-add-memcpy_to_folio-and-memcpy_from_folio.patch
affs-convert-affs_symlink_read_folio-to-use-the-folio.patch
affs-convert-data-read-and-write-to-use-folios.patch
migrate-use-folio_set_bh-instead-of-set_bh_page.patch
ntfs3-convert-ntfs_get_block_vbo-to-use-a-folio.patch
jbd2-use-a-folio-in-jbd2_journal_write_metadata_buffer.patch
buffer-remove-set_bh_page.patch
zswap-make-zswap_store-take-a-folio.patch
memcg-convert-get_obj_cgroup_from_page-to-get_obj_cgroup_from_folio.patch
swap-remove-some-calls-to-compound_head-in-swap_readpage.patch
zswap-make-zswap_load-take-a-folio.patch
mm-remove-config_per_vma_lock-ifdefs.patch
mm-allow-per-vma-locks-on-file-backed-vmas.patch
mm-move-fault_flag_vma_lock-check-from-handle_mm_fault.patch
mm-handle-pud-faults-under-the-vma-lock.patch
mm-handle-some-pmd-faults-under-the-vma-lock.patch
mm-move-fault_flag_vma_lock-check-down-in-handle_pte_fault.patch
mm-move-fault_flag_vma_lock-check-down-from-do_fault.patch
mm-run-the-fault-around-code-under-the-vma-lock.patch
mm-handle-swap-and-numa-pte-faults-under-the-vma-lock.patch
mm-handle-faults-that-merely-update-the-accessed-bit-under-the-vma-lock.patch
mm-handle-faults-that-merely-update-the-accessed-bit-under-the-vma-lock-fix.patch
mm-improve-the-comment-in-isolate_migratepages_block.patch
minmax-add-in_range-macro.patch
mm-convert-page_table_check_pte_set-to-page_table_check_ptes_set.patch
mm-add-generic-flush_icache_pages-and-documentation.patch
mm-add-folio_flush_mapping.patch
mm-remove-arch_implements_flush_dcache_folio.patch
mm-add-default-definition-of-set_ptes.patch
alpha-implement-the-new-page-table-range-api.patch
arc-implement-the-new-page-table-range-api.patch
arm-implement-the-new-page-table-range-api.patch
arm64-implement-the-new-page-table-range-api.patch
csky-implement-the-new-page-table-range-api.patch
hexagon-implement-the-new-page-table-range-api.patch
ia64-implement-the-new-page-table-range-api.patch
loongarch-implement-the-new-page-table-range-api.patch
m68k-implement-the-new-page-table-range-api.patch
microblaze-implement-the-new-page-table-range-api.patch
mips-implement-the-new-page-table-range-api.patch
nios2-implement-the-new-page-table-range-api.patch
openrisc-implement-the-new-page-table-range-api.patch
parisc-implement-the-new-page-table-range-api.patch
powerpc-implement-the-new-page-table-range-api.patch
riscv-implement-the-new-page-table-range-api.patch
s390-implement-the-new-page-table-range-api.patch
sh-implement-the-new-page-table-range-api.patch
sparc32-implement-the-new-page-table-range-api.patch
sparc64-implement-the-new-page-table-range-api.patch
um-implement-the-new-page-table-range-api.patch
x86-implement-the-new-page-table-range-api.patch
xtensa-implement-the-new-page-table-range-api.patch
mm-remove-page_mapping_file.patch
mm-rationalise-flush_icache_pages-and-flush_icache_page.patch
mm-tidy-up-set_ptes-definition.patch
mm-use-flush_icache_pages-in-do_set_pmd.patch
mm-call-update_mmu_cache_range-in-more-page-fault-handling-paths.patch
