Changeset b0c2075 in mainline for kernel/genarch/src/mm/as_pt.c

Timestamp:

2013-09-10T17:48:57Z (11 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

85147f3

Parents:

86733f3

Message:

new physical memory allocator supporting physical address constrains
the buddy allocator framework is retired and replaced by a two-level bitmap
the allocator can allocate an arbitrary number of frames, not only a power-of-two count

Caution: Change of semantics
The physical memory allocator no longer allocates naturally aligned blocks. If you require an aligned block, specify it as the constraint.

File:

• kernel/genarch/src/mm/as_pt.c (modified) (1 diff)

kernel/genarch/src/mm/as_pt.c

@@ -73 +73 @@
 pte_t *ptl0_create(unsigned int flags)
 {
-        pte_t *dst_ptl0 = (pte_t *) PA2KA(frame_alloc(PTL0_SIZE,
-            FRAME_LOWMEM, 0));
-        size_t table_size = FRAME_SIZE << PTL0_SIZE;
+        pte_t *dst_ptl0 = (pte_t *)
+            PA2KA(frame_alloc(PTL0_FRAMES, FRAME_LOWMEM, 0));
+        size_t table_size = FRAMES2SIZE(PTL0_FRAMES);
         
         if (flags & FLAG_AS_KERNEL)