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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2019-02-14 12:15:40 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-22 00:10:15 +1100 |
| commit | c746ca00f5eac6224eda02f39ebdc48fabfad3c5 (patch) | |
| tree | 818ba7d2e1cbfe96096f8f8c12dbe4d0f12a40e5 /arch/powerpc/include | |
| parent | powerpc: Fix 32-bit KVM-PR lockup and host crash with MacOS guest (diff) | |
| download | linux-dev-c746ca00f5eac6224eda02f39ebdc48fabfad3c5.tar.xz linux-dev-c746ca00f5eac6224eda02f39ebdc48fabfad3c5.zip | |
powerpc/book3s: Remove pgd/pud/pmd_set() interfaces
When updating page tables, we need to make sure we fill the page table
entry valid bits. We do this by or'ing in one of PGD/PUD/PMD_VAL_BITS.
The page table 'set' interfaces allow updating the raw value of page
table entries without setting the valid bits, so remove those
interfaces to avoid incorrect usage in future.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
[mpe: Reword commit message based on mailing list discussion]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgalloc.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 14 |
2 files changed, 4 insertions, 18 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h index 9c1173283b96..138bc2ecc0c4 100644 --- a/arch/powerpc/include/asm/book3s/64/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -111,7 +111,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) { - pgd_set(pgd, __pgtable_ptr_val(pud) | PGD_VAL_BITS); + *pgd = __pgd(__pgtable_ptr_val(pud) | PGD_VAL_BITS); } static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) @@ -138,7 +138,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { - pud_set(pud, __pgtable_ptr_val(pmd) | PUD_VAL_BITS); + *pud = __pud(__pgtable_ptr_val(pmd) | PUD_VAL_BITS); } static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, @@ -176,13 +176,13 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { - pmd_set(pmd, __pgtable_ptr_val(pte) | PMD_VAL_BITS); + *pmd = __pmd(__pgtable_ptr_val(pte) | PMD_VAL_BITS); } static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_page) { - pmd_set(pmd, __pgtable_ptr_val(pte_page) | PMD_VAL_BITS); + *pmd = __pmd(__pgtable_ptr_val(pte_page) | PMD_VAL_BITS); } static inline pgtable_t pmd_pgtable(pmd_t pmd) diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 404e0f48f3f3..49c2c2888274 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -851,11 +851,6 @@ static inline bool pte_ci(pte_t pte) return false; } -static inline void pmd_set(pmd_t *pmdp, unsigned long val) -{ - *pmdp = __pmd(val); -} - static inline void pmd_clear(pmd_t *pmdp) { *pmdp = __pmd(0); @@ -887,11 +882,6 @@ static inline int pmd_bad(pmd_t pmd) return hash__pmd_bad(pmd); } -static inline void pud_set(pud_t *pudp, unsigned long val) -{ - *pudp = __pud(val); -} - static inline void pud_clear(pud_t *pudp) { *pudp = __pud(0); @@ -934,10 +924,6 @@ static inline bool pud_access_permitted(pud_t pud, bool write) } #define pgd_write(pgd) pte_write(pgd_pte(pgd)) -static inline void pgd_set(pgd_t *pgdp, unsigned long val) -{ - *pgdp = __pgd(val); -} static inline void pgd_clear(pgd_t *pgdp) { |