[PATCH v10 01/12] Revert "mm/page_table_check: remove unused parameter in [__]page_table_check_pud_set"
From: Rohan McLure <hidden>
Date: 2024-03-13 04:21:51
Also in:
linux-mm, linux-riscv, linuxppc-dev
Subsystem:
arm64 port (aarch64 architecture), memory management, page table check, risc-v architecture, the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Catalin Marinas, Will Deacon, Andrew Morton, Pasha Tatashin, Paul Walmsley, Palmer Dabbelt, Albert Ou, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
This reverts commit 6d144436d954311f2dbacb5bf7b084042448d83e. 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. riscv: Respect change to delete mm, addr parameters from __set_pte_at() This commit also changed calls to __set_pte_at() to use fewer parameters on riscv. Keep that change rather than reverting it, as the signature of __set_pte_at() is changed in a different commit. Signed-off-by: Rohan McLure <redacted> --- 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 | 11 +++++++---- mm/page_table_check.c | 3 ++- 5 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 79ce70fbb751..a965b59401b3 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h@@ -548,7 +548,7 @@ 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 6066822e7396..4fc99dd3bb42 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h@@ -717,7 +717,7 @@ 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((pte_t *)pudp, pud_pte(pud)); }
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 9d077bca6a10..a9b1e8e6d4b9 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h@@ -1252,7 +1252,7 @@ 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); }
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 af69c3c8f7c2..75167537ebd7 100644
--- a/mm/page_table_check.c
+++ b/mm/page_table_check.c@@ -210,7 +210,8 @@ 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;
--
2.44.0
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