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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>
This commit is contained in:
Aneesh Kumar K.V 2019-02-14 12:15:40 +05:30 committed by Michael Ellerman
parent fe1ef6bcdb
commit c746ca00f5
2 changed files with 4 additions and 18 deletions
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8
arch/powerpc/include/asm/book3s/64/pgalloc.h
View File

@ -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)

14
arch/powerpc/include/asm/book3s/64/pgtable.h
View File

@ -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)
{