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mm/page_table_check: provide addr parameter to page_table_check_ptes_set()

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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@linux.ibm.com: rebase on arm64 + riscv changes, update commit message]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-5-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
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: Ingo Molnar <mingo@kernel.org>
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>
This commit is contained in:
Rohan McLure 2025-12-19 04:09:37 +11:00 committed by Andrew Morton
parent 6e2d8f9fc4
commit 0a5ae44831
5 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/include/asm/pgtable.h
View File

@ -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,

2
arch/riscv/include/asm/pgtable.h
View File

@ -627,7 +627,7 @@ 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);

12
include/linux/page_table_check.h
View File

@ -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)
{
}

2
include/linux/pgtable.h
View File

@ -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);

4
mm/page_table_check.c
View File

@ -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;