diff options
Diffstat (limited to 'arch/powerpc/include/asm/book3s/32/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/32/pgtable.h | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 36443cda8dcf..415ae29fa73a 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -36,8 +36,10 @@ static inline bool pte_user(pte_t pte) */ #ifdef CONFIG_PTE_64BIT #define PTE_RPN_MASK (~((1ULL << PTE_RPN_SHIFT) - 1)) +#define MAX_POSSIBLE_PHYSMEM_BITS 36 #else #define PTE_RPN_MASK (~((1UL << PTE_RPN_SHIFT) - 1)) +#define MAX_POSSIBLE_PHYSMEM_BITS 32 #endif /* @@ -238,8 +240,14 @@ extern void add_hash_page(unsigned context, unsigned long va, unsigned long pmdval); /* Flush an entry from the TLB/hash table */ -extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, - unsigned long address); +static inline void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, unsigned long addr) +{ + if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) { + unsigned long ptephys = __pa(ptep) & PAGE_MASK; + + flush_hash_pages(mm->context.id, addr, ptephys, 1); + } +} /* * PTE updates. This function is called whenever an existing @@ -291,10 +299,9 @@ static inline int __ptep_test_and_clear_young(struct mm_struct *mm, { unsigned long old; old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); - if (old & _PAGE_HASHPTE) { - unsigned long ptephys = __pa(ptep) & PAGE_MASK; - flush_hash_pages(mm->context.id, addr, ptephys, 1); - } + if (old & _PAGE_HASHPTE) + flush_hash_entry(mm, ptep, addr); + return (old & _PAGE_ACCESSED) != 0; } #define ptep_test_and_clear_young(__vma, __addr, __ptep) \ @@ -522,9 +529,9 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, if (pte_val(*ptep) & _PAGE_HASHPTE) flush_hash_entry(mm, ptep, addr); __asm__ __volatile__("\ - stw%U0%X0 %2,%0\n\ + stw%X0 %2,%0\n\ eieio\n\ - stw%U0%X0 %L2,%1" + stw%X1 %L2,%1" : "=m" (*ptep), "=m" (*((unsigned char *)ptep+4)) : "r" (pte) : "memory"); |