aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/mm/hash_low_64.S9
-rw-r--r--arch/powerpc/mm/hash_utils_64.c19
2 files changed, 11 insertions, 17 deletions
diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index a719f53921a5..3079f6b44cf5 100644
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -68,9 +68,6 @@ _GLOBAL(__hash_page_4K)
68 std r8,STK_PARM(r8)(r1) 68 std r8,STK_PARM(r8)(r1)
69 std r9,STK_PARM(r9)(r1) 69 std r9,STK_PARM(r9)(r1)
70 70
71 /* Add _PAGE_PRESENT to access */
72 ori r4,r4,_PAGE_PRESENT
73
74 /* Save non-volatile registers. 71 /* Save non-volatile registers.
75 * r31 will hold "old PTE" 72 * r31 will hold "old PTE"
76 * r30 is "new PTE" 73 * r30 is "new PTE"
@@ -347,9 +344,6 @@ _GLOBAL(__hash_page_4K)
347 std r8,STK_PARM(r8)(r1) 344 std r8,STK_PARM(r8)(r1)
348 std r9,STK_PARM(r9)(r1) 345 std r9,STK_PARM(r9)(r1)
349 346
350 /* Add _PAGE_PRESENT to access */
351 ori r4,r4,_PAGE_PRESENT
352
353 /* Save non-volatile registers. 347 /* Save non-volatile registers.
354 * r31 will hold "old PTE" 348 * r31 will hold "old PTE"
355 * r30 is "new PTE" 349 * r30 is "new PTE"
@@ -687,9 +681,6 @@ _GLOBAL(__hash_page_64K)
687 std r8,STK_PARM(r8)(r1) 681 std r8,STK_PARM(r8)(r1)
688 std r9,STK_PARM(r9)(r1) 682 std r9,STK_PARM(r9)(r1)
689 683
690 /* Add _PAGE_PRESENT to access */
691 ori r4,r4,_PAGE_PRESENT
692
693 /* Save non-volatile registers. 684 /* Save non-volatile registers.
694 * r31 will hold "old PTE" 685 * r31 will hold "old PTE"
695 * r30 is "new PTE" 686 * r30 is "new PTE"
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 98f262de5585..40847a9dd6db 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -955,6 +955,17 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
955 return 1; 955 return 1;
956 } 956 }
957 957
958 /* Add _PAGE_PRESENT to the required access perm */
959 access |= _PAGE_PRESENT;
960
961 /* Pre-check access permissions (will be re-checked atomically
962 * in __hash_page_XX but this pre-check is a fast path
963 */
964 if (access & ~pte_val(*ptep)) {
965 DBG_LOW(" no access !\n");
966 return 1;
967 }
968
958#ifdef CONFIG_HUGETLB_PAGE 969#ifdef CONFIG_HUGETLB_PAGE
959 if (hugeshift) 970 if (hugeshift)
960 return __hash_page_huge(ea, access, vsid, ptep, trap, local, 971 return __hash_page_huge(ea, access, vsid, ptep, trap, local,
@@ -967,14 +978,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
967 DBG_LOW(" i-pte: %016lx %016lx\n", pte_val(*ptep), 978 DBG_LOW(" i-pte: %016lx %016lx\n", pte_val(*ptep),
968 pte_val(*(ptep + PTRS_PER_PTE))); 979 pte_val(*(ptep + PTRS_PER_PTE)));
969#endif 980#endif
970 /* Pre-check access permissions (will be re-checked atomically
971 * in __hash_page_XX but this pre-check is a fast path
972 */
973 if (access & ~pte_val(*ptep)) {
974 DBG_LOW(" no access !\n");
975 return 1;
976 }
977
978 /* Do actual hashing */ 981 /* Do actual hashing */
979#ifdef CONFIG_PPC_64K_PAGES 982#ifdef CONFIG_PPC_64K_PAGES
980 /* If _PAGE_4K_PFN is set, make sure this is a 4k segment */ 983 /* If _PAGE_4K_PFN is set, make sure this is a 4k segment */