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-rw-r--r--kernel/arch/ia64/include/asm/mmu.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/arch/ia64/include/asm/mmu.h b/kernel/arch/ia64/include/asm/mmu.h
new file mode 100644
index 000000000..611432ba5
--- /dev/null
+++ b/kernel/arch/ia64/include/asm/mmu.h
@@ -0,0 +1,13 @@
+#ifndef __MMU_H
+#define __MMU_H
+
+/*
+ * Type for a context number. We declare it volatile to ensure proper
+ * ordering when it's accessed outside of spinlock'd critical sections
+ * (e.g., as done in activate_mm() and init_new_context()).
+ */
+typedef volatile unsigned long mm_context_t;
+
+typedef unsigned long nv_mm_context_t;
+
+#endif