[PATCH] CRIS update: mm

Memory management patches.

* SMP support.
* Non-executable stack (on v32).
* 4-level page tables.
* Added simple Thread Local Storage support.

Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 19 deletions

diff --git a/arch/cris/mm/tlb.c b/arch/cris/mm/tlb.c
index 23eca5ad7389..0df390a656cd 100644
--- a/arch/cris/mm/tlb.c
+++ b/arch/cris/mm/tlb.c
@@ -29,18 +29,6 @@
 struct mm_struct *page_id_map[NUM_PAGEID];
 static int map_replace_ptr = 1;  /* which page_id_map entry to replace next */
 
-/*
- * Initialize the context related info for a new mm_struct
- * instance.
- */
-
-int
-init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
-        mm->context = NO_CONTEXT;
-        return 0;
-}
-
 /* the following functions are similar to those used in the PPC port */
 
 static inline void
@@ -60,12 +48,12 @@ alloc_context(struct mm_struct *mm)
                  */
                 flush_tlb_mm(old_mm);
 
-                old_mm->context = NO_CONTEXT;
+                old_mm->context.page_id = NO_CONTEXT;
         }
 
         /* insert it into the page_id_map */
 
-        mm->context = map_replace_ptr;
+        mm->context.page_id = map_replace_ptr;
         page_id_map[map_replace_ptr] = mm;
 
         map_replace_ptr++;
@@ -81,7 +69,7 @@ alloc_context(struct mm_struct *mm)
 void
 get_mmu_context(struct mm_struct *mm)
 {
-        if(mm->context == NO_CONTEXT)
+        if(mm->context.page_id == NO_CONTEXT)
                 alloc_context(mm);
 }
 
@@ -96,11 +84,10 @@ get_mmu_context(struct mm_struct *mm)
 void
 destroy_context(struct mm_struct *mm)
 {
-        if(mm->context != NO_CONTEXT) {
-                D(printk("destroy_context %d (%p)\n", mm->context, mm));
+        if(mm->context.page_id != NO_CONTEXT) {
+                D(printk("destroy_context %d (%p)\n", mm->context.page_id, mm));
                 flush_tlb_mm(mm);  /* TODO this might be redundant ? */
-                page_id_map[mm->context] = NULL;
-                /* mm->context = NO_CONTEXT; redundant.. mm will be freed */
+                page_id_map[mm->context.page_id] = NULL;
         }
 }