1#ifndef __x86_64_MMU_H 2#define __x86_64_MMU_H 3 4#include <linux/spinlock.h> 5#include <asm/semaphore.h> 6 7/* 8 * The x86_64 doesn't have a mmu context, but 9 * we put the segment information here. 10 * 11 * cpu_vm_mask is used to optimize ldt flushing. 12 */ 13typedef struct { 14 void *ldt; 15 rwlock_t ldtlock; 16 int size; 17 struct semaphore sem; 18} mm_context_t; 19 20#endif 21