1 files changed, 37 insertions, 15 deletions

diff --git a/arch/xtensa/mm/tlb.c b/arch/xtensa/mm/tlb.c
index ca9d2366bf1..5ece856c572 100644
--- a/arch/xtensa/mm/tlb.c
+++ b/arch/xtensa/mm/tlb.c
@@ -48,7 +48,7 @@ static inline void __flush_dtlb_all (void)
 }
 
 
-void flush_tlb_all (void)
+void local_flush_tlb_all(void)
 {
 	__flush_itlb_all();
 	__flush_dtlb_all();
@@ -60,19 +60,23 @@ void flush_tlb_all (void)
  * a new context will be assigned to it.
  */
 
-void flush_tlb_mm(struct mm_struct *mm)
+void local_flush_tlb_mm(struct mm_struct *mm)
 {
+	int cpu = smp_processor_id();
+
 	if (mm == current->active_mm) {
 		unsigned long flags;
 		local_irq_save(flags);
-		__get_new_mmu_context(mm);
-		__load_mmu_context(mm);
+		mm->context.asid[cpu] = NO_CONTEXT;
+		activate_context(mm, cpu);
 		local_irq_restore(flags);
+	} else {
+		mm->context.asid[cpu] = NO_CONTEXT;
+		mm->context.cpu = -1;
 	}
-	else
-		mm->context = 0;
 }
 
+
 #define _ITLB_ENTRIES (ITLB_ARF_WAYS << XCHAL_ITLB_ARF_ENTRIES_LOG2)
 #define _DTLB_ENTRIES (DTLB_ARF_WAYS << XCHAL_DTLB_ARF_ENTRIES_LOG2)
 #if _ITLB_ENTRIES > _DTLB_ENTRIES
@@ -81,24 +85,26 @@ void flush_tlb_mm(struct mm_struct *mm)
 # define _TLB_ENTRIES _DTLB_ENTRIES
 #endif
 
-void flush_tlb_range (struct vm_area_struct *vma,
-		      unsigned long start, unsigned long end)
+void local_flush_tlb_range(struct vm_area_struct *vma,
+		unsigned long start, unsigned long end)
 {
+	int cpu = smp_processor_id();
 	struct mm_struct *mm = vma->vm_mm;
 	unsigned long flags;
 
-	if (mm->context == NO_CONTEXT)
+	if (mm->context.asid[cpu] == NO_CONTEXT)
 		return;
 
 #if 0
 	printk("[tlbrange<%02lx,%08lx,%08lx>]\n",
-			(unsigned long)mm->context, start, end);
+			(unsigned long)mm->context.asid[cpu], start, end);
 #endif
 	local_irq_save(flags);
 
 	if (end-start + (PAGE_SIZE-1) <= _TLB_ENTRIES << PAGE_SHIFT) {
 		int oldpid = get_rasid_register();
-		set_rasid_register (ASID_INSERT(mm->context));
+
+		set_rasid_register(ASID_INSERT(mm->context.asid[cpu]));
 		start &= PAGE_MASK;
 		if (vma->vm_flags & VM_EXEC)
 			while(start < end) {
@@ -114,24 +120,25 @@ void flush_tlb_range (struct vm_area_struct *vma,
 
 		set_rasid_register(oldpid);
 	} else {
-		flush_tlb_mm(mm);
+		local_flush_tlb_mm(mm);
 	}
 	local_irq_restore(flags);
 }
 
-void flush_tlb_page (struct vm_area_struct *vma, unsigned long page)
+void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
 {
+	int cpu = smp_processor_id();
 	struct mm_struct* mm = vma->vm_mm;
 	unsigned long flags;
 	int oldpid;
 
-	if(mm->context == NO_CONTEXT)
+	if (mm->context.asid[cpu] == NO_CONTEXT)
 		return;
 
 	local_irq_save(flags);
 
 	oldpid = get_rasid_register();
-	set_rasid_register(ASID_INSERT(mm->context));
+	set_rasid_register(ASID_INSERT(mm->context.asid[cpu]));
 
 	if (vma->vm_flags & VM_EXEC)
 		invalidate_itlb_mapping(page);
@@ -142,6 +149,21 @@ void flush_tlb_page (struct vm_area_struct *vma, unsigned long page)
 	local_irq_restore(flags);
 }
 
+void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	if (end > start && start >= TASK_SIZE && end <= PAGE_OFFSET &&
+	    end - start < _TLB_ENTRIES << PAGE_SHIFT) {
+		start &= PAGE_MASK;
+		while (start < end) {
+			invalidate_itlb_mapping(start);
+			invalidate_dtlb_mapping(start);
+			start += PAGE_SIZE;
+		}
+	} else {
+		local_flush_tlb_all();
+	}
+}
+
 #ifdef CONFIG_DEBUG_TLB_SANITY
 
 static unsigned get_pte_for_vaddr(unsigned vaddr)