Changeset 77147d6 in mainline for generic/src/mm/as.c

Timestamp:

2006-01-15T21:16:06Z (20 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

5d2ab23

Parents:

44c259c

Message:

interface change: as_area_load_mapping → as_area_set_mapping (set single page mapping)
map init directly from the physical frames it is loaded in

File:

• generic/src/mm/as.c (modified) (3 diffs)

generic/src/mm/as.c

@@ -143 +143 @@
                          * Frames will be allocated on-demand by
                          * as_page_fault() or preloaded by
-                         * as_area_load_mapping().
+                         * as_area_set_mapping().
                          */
                         a->mapping[i] = UNALLOCATED_PFN;
@@ -169 +169 @@
  * Initialize a->mapping.
  *
- * @param a Target address space area.
- * @param pfn Array of frame numbers. Number of elements must match with a->mapping.
- */
-void as_area_load_mapping(as_area_t *a, index_t *pfn)
-{
+ * @param a   Target address space area.
+ * @param vpn Page number relative to area start.
+ * @param pfn Frame number to map.
+ */
+void as_area_set_mapping(as_area_t *a, index_t vpn, index_t pfn)
+{
+        ASSERT(vpn < a->size);
+        ASSERT(a->mapping[vpn] == UNALLOCATED_PFN);
+        ASSERT(pfn != UNALLOCATED_PFN);
+        
         ipl_t ipl;
-        int i;
         
         ipl = interrupts_disable();
         spinlock_lock(&a->lock);
-
-        for (i = 0; i < a->size; i++) {
-                ASSERT(a->mapping[i] == UNALLOCATED_PFN);
-                ASSERT(pfn[i] != UNALLOCATED_PFN);
-                a->mapping[i] = pfn[i];
-        }
+        
+        a->mapping[vpn] = pfn;
         
         spinlock_unlock(&a->lock);
@@ -254 +254 @@
                 area->mapping[vpn] = frame / FRAME_SIZE;
                 ASSERT(area->mapping[vpn] != UNALLOCATED_PFN);
-        } else {
+        } else
                 frame = area->mapping[vpn] * FRAME_SIZE;
-        }
         
         switch (area->type) {