Changeset 20d50a1 in mainline for arch/mips32/src/mm/as.c

Timestamp:

2006-01-13T13:02:45Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

f9425006

Parents:

0369911

Message:

Memory management work.

• vm.* → as.* (as like address space is, imho, more fitting)
• Don't do TLB shootdown on vm_install(). Some architectures only need to call tlb_invalidate_asid().
• Don't allocate all frames for as_area in as_area_create(), but let them be allocated on-demand by as_page_fault().
• Add high-level page fault handler as_page_fault().
• Add as_area_load_mapping().

File:

• arch/mips32/src/mm/as.c (moved) (moved from arch/mips32/src/mm/vm.c ) (1 diff)

arch/mips32/src/mm/as.c

@@ -27 +27 @@
  */
 
-#include <arch/mm/vm.h>
+#include <arch/mm/as.h>
 #include <arch/mm/tlb.h>
-#include <mm/vm.h>
+#include <mm/tlb.h>
+#include <mm/as.h>
 #include <arch/cp0.h>
 #include <arch.h>
 
-/** Install ASID of the current VM
+/** Install address space.
  *
- * Install ASID of the current VM.
+ * Install ASID and if necessary, purge TLB.
  *
- * @param vm VM structure.
+ * @param as Address space structure.
  */
-void vm_install_arch(vm_t *vm)
+void as_install_arch(as_t *as)
 {
         entry_hi_t hi;
         ipl_t ipl;
-        
+
+        /*
+         * If necessary, purge TLB.
+         */
+        tlb_invalidate_asid(as->asid);  /* TODO: do it only if necessary */
+
+        /*
+         * Install ASID.
+         */     
         hi.value = cp0_entry_hi_read();
 
         ipl = interrupts_disable();
-        spinlock_lock(&vm->lock);
-        hi.asid = vm->asid;
+        spinlock_lock(&as->lock);
+        hi.asid = as->asid;
         cp0_entry_hi_write(hi.value);   
-        spinlock_unlock(&vm->lock);
+        spinlock_unlock(&as->lock);
         interrupts_restore(ipl);
 }