From 863981e96738983919de841ec669e157e6bdaeb0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Sun, 11 Sep 2016 04:34:46 -0300 Subject: Linux-libre 4.7.1-gnu --- arch/powerpc/mm/hash64_64k.c | 71 ++++++++++++++++++++++---------------------- 1 file changed, 35 insertions(+), 36 deletions(-) (limited to 'arch/powerpc/mm/hash64_64k.c') diff --git a/arch/powerpc/mm/hash64_64k.c b/arch/powerpc/mm/hash64_64k.c index b2d659cf5..16644e1f4 100644 --- a/arch/powerpc/mm/hash64_64k.c +++ b/arch/powerpc/mm/hash64_64k.c @@ -23,7 +23,7 @@ bool __rpte_sub_valid(real_pte_t rpte, unsigned long index) unsigned long g_idx; unsigned long ptev = pte_val(rpte.pte); - g_idx = (ptev & _PAGE_COMBO_VALID) >> _PAGE_F_GIX_SHIFT; + g_idx = (ptev & H_PAGE_COMBO_VALID) >> H_PAGE_F_GIX_SHIFT; index = index >> 2; if (g_idx & (0x1 << index)) return true; @@ -37,12 +37,12 @@ static unsigned long mark_subptegroup_valid(unsigned long ptev, unsigned long in { unsigned long g_idx; - if (!(ptev & _PAGE_COMBO)) + if (!(ptev & H_PAGE_COMBO)) return ptev; index = index >> 2; g_idx = 0x1 << index; - return ptev | (g_idx << _PAGE_F_GIX_SHIFT); + return ptev | (g_idx << H_PAGE_F_GIX_SHIFT); } int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, @@ -66,21 +66,21 @@ 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 | _PAGE_COMBO; - if (access & _PAGE_RW) + new_pte = old_pte | H_PAGE_BUSY | _PAGE_ACCESSED | H_PAGE_COMBO; + 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))); + /* * Handle the subpage protection bits */ @@ -103,21 +103,21 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, /* *None of the sub 4k page is hashed */ - if (!(old_pte & _PAGE_HASHPTE)) + if (!(old_pte & H_PAGE_HASHPTE)) goto htab_insert_hpte; /* * Check if the pte was already inserted into the hash table * as a 64k HW page, and invalidate the 64k HPTE if so. */ - if (!(old_pte & _PAGE_COMBO)) { + if (!(old_pte & H_PAGE_COMBO)) { flush_hash_page(vpn, rpte, MMU_PAGE_64K, ssize, flags); /* * clear the old slot details from the old and new pte. * On hash insert failure we use old pte value and we don't * want slot information there if we have a insert failure. */ - old_pte &= ~(_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND); - new_pte &= ~(_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND); + old_pte &= ~(H_PAGE_HASHPTE | H_PAGE_F_GIX | H_PAGE_F_SECOND); + new_pte &= ~(H_PAGE_HASHPTE | H_PAGE_F_GIX | H_PAGE_F_SECOND); goto htab_insert_hpte; } /* @@ -143,15 +143,15 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, if (ret == -1) goto htab_insert_hpte; - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } htab_insert_hpte: /* - * handle _PAGE_4K_PFN case + * handle H_PAGE_4K_PFN case */ - if (old_pte & _PAGE_4K_PFN) { + if (old_pte & H_PAGE_4K_PFN) { /* * All the sub 4k page have the same * physical address. @@ -199,20 +199,20 @@ repeat: } /* * Insert slot number & secondary bit in PTE second half, - * clear _PAGE_BUSY and set appropriate HPTE slot bit - * Since we have _PAGE_BUSY set on ptep, we can be sure + * clear H_PAGE_BUSY and set appropriate HPTE slot bit + * Since we have H_PAGE_BUSY set on ptep, we can be sure * nobody is undating hidx. */ hidxp = (unsigned long *)(ptep + PTRS_PER_PTE); rpte.hidx &= ~(0xfUL << (subpg_index << 2)); *hidxp = rpte.hidx | (slot << (subpg_index << 2)); new_pte = mark_subptegroup_valid(new_pte, subpg_index); - new_pte |= _PAGE_HASHPTE; + new_pte |= H_PAGE_HASHPTE; /* * check __real_pte for details on matching smp_rmb() */ smp_wmb(); - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } @@ -220,7 +220,6 @@ int __hash_page_64K(unsigned long ea, unsigned long access, unsigned long vsid, pte_t *ptep, unsigned long trap, unsigned long flags, int ssize) { - unsigned long hpte_group; unsigned long rflags, pa; unsigned long old_pte, new_pte; @@ -235,27 +234,26 @@ int __hash_page_64K(unsigned long ea, unsigned long access, 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; /* * Check if PTE has the cache-inhibit bit set * If so, bail out and refault as a 4k page */ if (!mmu_has_feature(MMU_FTR_CI_LARGE_PAGE) && - unlikely(old_pte & _PAGE_NO_CACHE)) + unlikely(pte_ci(pte))) return 0; /* * 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); @@ -264,22 +262,22 @@ int __hash_page_64K(unsigned long ea, unsigned long access, 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_64K, MMU_PAGE_64K, 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); @@ -319,9 +317,10 @@ repeat: MMU_PAGE_64K, MMU_PAGE_64K, 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; } -- cgit v1.2.3-54-g00ecf