diff options
Diffstat (limited to 'arch/powerpc/mm/hash64_4k.c')
| -rw-r--r-- | arch/powerpc/mm/hash64_4k.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c index 47d1b26effc6..6333b273d2d5 100644 --- a/arch/powerpc/mm/hash64_4k.c +++ b/arch/powerpc/mm/hash64_4k.c @@ -34,21 +34,21 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, old_pte = pte_val(pte); /* 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. Since this is 4K insert of 64K page size - * also add _PAGE_COMBO + * also add H_PAGE_COMBO */ - 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))); + /* * PP bits. _PAGE_USER is already PP bit 0x2, so we only * need to add in 0x1 if it's a read-only user page @@ -60,22 +60,22 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap); vpn = hpt_vpn(ea, vsid, ssize); - if (unlikely(old_pte & _PAGE_HASHPTE)) { + if (unlikely(old_pte & H_PAGE_HASHPTE)) { /* * There MIGHT be an HPTE for this pte */ 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_PAGE_4K, MMU_PAGE_4K, ssize, flags) == -1) old_pte &= ~_PAGE_HPTEFLAGS; } - if (likely(!(old_pte & _PAGE_HASHPTE))) { + if (likely(!(old_pte & H_PAGE_HASHPTE))) { pa = pte_pfn(__pte(old_pte)) << PAGE_SHIFT; hash = hpt_hash(vpn, shift, ssize); @@ -115,9 +115,10 @@ repeat: MMU_PAGE_4K, MMU_PAGE_4K, old_pte); return -1; } - new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | _PAGE_HASHPTE; - new_pte |= (slot << _PAGE_F_GIX_SHIFT) & (_PAGE_F_SECOND | _PAGE_F_GIX); + new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE; + new_pte |= (slot << H_PAGE_F_GIX_SHIFT) & + (H_PAGE_F_SECOND | H_PAGE_F_GIX); } - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } |