Changeset fa7d9c4 in mainline for genarch/src/mm/asid.c

Timestamp:

2006-01-24T20:30:26Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

cc5412e

Parents:

36b01bb2

Message:

Unlock address space prior TLB shootdown in get_asid() to unify
the locking order among mips32, sparc64 and ia64.

Add ASID_STEALING_ENABLED macro to disable the stealing part on ia64
in a clean way.

File:

• genarch/src/mm/asid.c (modified) (3 diffs)

genarch/src/mm/asid.c

@@ -95 +95 @@
         ipl = interrupts_disable();
         spinlock_lock(&asidlock);
-        if (asids_allocated == ASIDS_ALLOCABLE) {
+        if (ASID_STEALING_ENABLED && asids_allocated == ASIDS_ALLOCABLE) {
 
                 /*
@@ -122 +122 @@
 
                 /*
+                 * Notify the address space from wich the ASID
+                 * was stolen by invalidating its asid member.
+                 */
+                as->asid = ASID_INVALID;
+                spinlock_unlock(&as->lock);
+
+                /*
                  * Get the system rid of the stolen ASID.
                  */
@@ -127 +134 @@
                 tlb_shootdown_finalize();
                 tlb_invalidate_asid(asid);
-                as->asid = ASID_INVALID;
-                
-                spinlock_unlock(&as->lock);
         } else {