diff options
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage-hash64.c')
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage-hash64.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c b/arch/powerpc/mm/hugetlbpage-hash64.c index 8555fce902fe..3058560b6121 100644 --- a/arch/powerpc/mm/hugetlbpage-hash64.c +++ b/arch/powerpc/mm/hugetlbpage-hash64.c @@ -47,18 +47,19 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, do { old_pte = pte_val(*ptep); /* If PTE busy, retry the access */ - if (unlikely(old_pte & _PAGE_BUSY)) + if (unlikely(old_pte & H_PAGE_BUSY)) return 0; /* If PTE permissions don't match, take page fault */ - if (unlikely(access & ~old_pte)) + if (unlikely(!check_pte_access(access, old_pte))) return 1; + /* Try to lock the PTE, add ACCESSED and DIRTY if it was * a write access */ - new_pte = old_pte | _PAGE_BUSY | _PAGE_ACCESSED; - if (access & _PAGE_RW) + new_pte = old_pte | H_PAGE_BUSY | _PAGE_ACCESSED; + if (access & _PAGE_WRITE) new_pte |= _PAGE_DIRTY; - } while(old_pte != __cmpxchg_u64((unsigned long *)ptep, - old_pte, new_pte)); + } while(!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); + rflags = htab_convert_pte_flags(new_pte); sz = ((1UL) << shift); @@ -68,28 +69,28 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap); /* Check if pte already has an hpte (case 2) */ - if (unlikely(old_pte & _PAGE_HASHPTE)) { + if (unlikely(old_pte & H_PAGE_HASHPTE)) { /* There MIGHT be an HPTE for this pte */ unsigned long hash, slot; hash = hpt_hash(vpn, shift, ssize); - if (old_pte & _PAGE_F_SECOND) + if (old_pte & H_PAGE_F_SECOND) hash = ~hash; slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; - slot += (old_pte & _PAGE_F_GIX) >> _PAGE_F_GIX_SHIFT; + slot += (old_pte & H_PAGE_F_GIX) >> H_PAGE_F_GIX_SHIFT; if (ppc_md.hpte_updatepp(slot, rflags, vpn, mmu_psize, mmu_psize, ssize, flags) == -1) old_pte &= ~_PAGE_HPTEFLAGS; } - if (likely(!(old_pte & _PAGE_HASHPTE))) { + if (likely(!(old_pte & H_PAGE_HASHPTE))) { unsigned long hash = hpt_hash(vpn, shift, ssize); pa = pte_pfn(__pte(old_pte)) << PAGE_SHIFT; /* clear HPTE slot informations in new PTE */ - new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | _PAGE_HASHPTE; + new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE; slot = hpte_insert_repeating(hash, vpn, pa, rflags, 0, mmu_psize, ssize); @@ -105,14 +106,14 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, return -1; } - new_pte |= (slot << _PAGE_F_GIX_SHIFT) & - (_PAGE_F_SECOND | _PAGE_F_GIX); + new_pte |= (slot << H_PAGE_F_GIX_SHIFT) & + (H_PAGE_F_SECOND | H_PAGE_F_GIX); } /* * No need to use ldarx/stdcx here */ - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } |