Changeset 59fb782 in mainline for kernel/generic/src/mm/page.c

Timestamp:

2013-03-24T19:38:18Z (11 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

d965dc3

Parents:

119b46e

Message:

Unify the use of virtual addresses and virtual page addresses in mm code.

• as_page_fault() accepts faulting address (if available) and propagates the faulting page further along
• backends' page_fault() handlers assume page fault address
• page_mapping_create/destroy/find() accept addresses, but pass only page and frame addresses along
• as_area_create(), as_area_resize() now test whether the address is page-aligned
• renames of various variables to better fit their purpose (address vs. page)
• no need to align the addresses in mips32 TLB exception handlers now

File:

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

kernel/generic/src/mm/page.c

@@ -104 +104 @@
         ASSERT(page_mapping_operations->mapping_insert);
 
-        page_mapping_operations->mapping_insert(as, page, frame, flags);
+        page_mapping_operations->mapping_insert(as, ALIGN_DOWN(page, PAGE_SIZE),
+            ALIGN_DOWN(frame, FRAME_SIZE), flags);
         
         /* Repel prefetched accesses to the old mapping. */
@@ -127 +128 @@
         ASSERT(page_mapping_operations->mapping_remove);
         
-        page_mapping_operations->mapping_remove(as, page);
+        page_mapping_operations->mapping_remove(as,
+            ALIGN_DOWN(page, PAGE_SIZE));
         
         /* Repel prefetched accesses to the old mapping. */
@@ -150 +152 @@
         ASSERT(page_mapping_operations->mapping_find);
         
-        return page_mapping_operations->mapping_find(as, page, nolock);
+        return page_mapping_operations->mapping_find(as,
+            ALIGN_DOWN(page, PAGE_SIZE), nolock);
 }