Changeset 563c2dd in mainline

Timestamp:

2007-03-29T19:26:16Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

879585a3

Parents:

7e2432b

Message:

Fix TSB bug during TSB refill.
When one wants to enable a TSB entry, he or she should set the
entry invalid bit to false, as opposed to setting it to true.

File:

• kernel/arch/sparc64/src/mm/tsb.c (modified) (2 diffs)

kernel/arch/sparc64/src/mm/tsb.c

@@ -62 +62 @@
         
         i0 = (page >> MMU_PAGE_WIDTH) & TSB_INDEX_MASK;
-        cnt = min(pages * MMU_PAGES_PER_PAGE, ITSB_ENTRY_COUNT);
+        if (pages == (count_t) -1 || (pages * 2) > ITSB_ENTRY_COUNT)
+                cnt = ITSB_ENTRY_COUNT;
+        else
+                cnt = pages * 2;
         
         for (i = 0; i < cnt; i++) {
@@ -158 +161 @@
         write_barrier();
         
-        tsb->tag.invalid = true;        /* mark the entry as valid */
+        tsb->tag.invalid = false;       /* mark the entry as valid */
 }