Changeset f18d01b6 in mainline for kernel/genarch/src/mm/page_pt.c

Timestamp:

2013-09-11T18:09:18Z (11 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d5f774f6

Parents:

5759975a

Message:

allocate frames for the page tables on naturally aligned addresses

File:

• kernel/genarch/src/mm/page_pt.c (modified) (3 diffs)

kernel/genarch/src/mm/page_pt.c

@@ -83 +83 @@
         if (GET_PTL1_FLAGS(ptl0, PTL0_INDEX(page)) & PAGE_NOT_PRESENT) {
                 pte_t *newpt = (pte_t *)
-                    PA2KA(frame_alloc(PTL1_FRAMES, FRAME_LOWMEM, 0));
-                memsetb(newpt, FRAMES2SIZE(PTL1_FRAMES), 0);
+                    PA2KA(frame_alloc(PTL1_FRAMES, FRAME_LOWMEM, PTL1_SIZE - 1));
+                memsetb(newpt, PTL1_SIZE, 0);
                 SET_PTL1_ADDRESS(ptl0, PTL0_INDEX(page), KA2PA(newpt));
                 SET_PTL1_FLAGS(ptl0, PTL0_INDEX(page),
@@ -102 +102 @@
         if (GET_PTL2_FLAGS(ptl1, PTL1_INDEX(page)) & PAGE_NOT_PRESENT) {
                 pte_t *newpt = (pte_t *)
-                    PA2KA(frame_alloc(PTL2_FRAMES, FRAME_LOWMEM, 0));
-                memsetb(newpt, FRAMES2SIZE(PTL2_FRAMES), 0);
+                    PA2KA(frame_alloc(PTL2_FRAMES, FRAME_LOWMEM, PTL2_SIZE - 1));
+                memsetb(newpt, PTL2_SIZE, 0);
                 SET_PTL2_ADDRESS(ptl1, PTL1_INDEX(page), KA2PA(newpt));
                 SET_PTL2_FLAGS(ptl1, PTL1_INDEX(page),
@@ -119 +119 @@
         if (GET_PTL3_FLAGS(ptl2, PTL2_INDEX(page)) & PAGE_NOT_PRESENT) {
                 pte_t *newpt = (pte_t *)
-                    PA2KA(frame_alloc(PTL3_FRAMES, FRAME_LOWMEM, 0));
-                memsetb(newpt, FRAMES2SIZE(PTL3_FRAMES), 0);
+                    PA2KA(frame_alloc(PTL3_FRAMES, FRAME_LOWMEM, PTL2_SIZE - 1));
+                memsetb(newpt, PTL2_SIZE, 0);
                 SET_PTL3_ADDRESS(ptl2, PTL2_INDEX(page), KA2PA(newpt));
                 SET_PTL3_FLAGS(ptl2, PTL2_INDEX(page),