Changeset 567807b1 in mainline for arch/ppc64/src/mm/page.c

Timestamp:

2006-05-24T17:03:29Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

8d6bc2d5

Parents:

82da5f5

Message:

Modify the hierarchy of page fault handlers to pass access mode that caused the fault.
Architectures are required to pass either PF_ACCESS_READ, PF_ACCESS_WRITE or PF_ACCESS_EXEC
to as_page_fault(), depending on the cause of the fault.

File:

• arch/ppc64/src/mm/page.c (modified) (4 diffs)

arch/ppc64/src/mm/page.c

@@ -54 +54 @@
  * @param lock     Lock/unlock the address space.
  * @param badvaddr Faulting virtual address.
+ * @param access   Access mode that caused the fault.
  * @param istate   Pointer to interrupted state.
  * @param pfrc     Pointer to variable where as_page_fault() return code will be stored.
@@ -59 +60 @@
  *
  */
-static pte_t *find_mapping_and_check(as_t *as, bool lock, __address badvaddr, istate_t *istate, int *pfcr)
+static pte_t *find_mapping_and_check(as_t *as, bool lock, __address badvaddr, int access,
+                                     istate_t *istate, int *pfcr)
 {
         /*
@@ -79 +81 @@
                  */
                 page_table_unlock(as, lock);
-                switch (rc = as_page_fault(badvaddr, istate)) {
+                switch (rc = as_page_fault(badvaddr, access, istate)) {
                         case AS_PF_OK:
                                 /*
@@ -212 +214 @@
         page_table_lock(as, lock);
         
-        pte = find_mapping_and_check(as, lock, badvaddr, istate, &pfcr);
+        pte = find_mapping_and_check(as, lock, badvaddr, PF_ACCESS_READ /* FIXME */, istate, &pfcr);
         if (!pte) {
                 switch (pfcr) {