1 files changed, 20 insertions, 0 deletions

diff --git a/include/asm-x86_64/mmu.h b/include/asm-x86_64/mmu.h
new file mode 100644
index 000000000000..5dc6ed79859a
--- /dev/null
+++ b/include/asm-x86_64/mmu.h
@@ -0,0 +1,20 @@
+#ifndef __x86_64_MMU_H
+#define __x86_64_MMU_H
+
+#include <linux/spinlock.h>
+#include <asm/semaphore.h>
+
+/*
+ * The x86_64 doesn't have a mmu context, but
+ * we put the segment information here.
+ *
+ * cpu_vm_mask is used to optimize ldt flushing.
+ */
+typedef struct { 
+        void *ldt;
+        rwlock_t ldtlock; 
+        int size;
+        struct semaphore sem; 
+} mm_context_t;
+
+#endif