arch/x86/include/asm/mmu.h

   1 #ifndef _ASM_X86_MMU_H
   2 #define _ASM_X86_MMU_H
   3
   4 #include <linux/spinlock.h>
   5 #include <linux/mutex.h>
   6
   7 /*
   8  * The x86 doesn't have a mmu context, but
   9  * we put the segment information here.
  10  */
  11 typedef struct {
  12 #ifdef CONFIG_MODIFY_LDT_SYSCALL
  13         struct ldt_struct *ldt;
  14 #endif
  15
  16 #ifdef CONFIG_X86_64
  17         /* True if mm supports a task running in 32 bit compatibility mode. */
  18         unsigned short ia32_compat;
  19 #endif
  20
  21         struct mutex lock;
  22         void __user *vdso;
  23
  24         atomic_t perf_rdpmc_allowed;    /* nonzero if rdpmc is allowed */
  25 } mm_context_t;
  26
  27 #ifdef CONFIG_SMP
  28 void leave_mm(int cpu);
  29 #else
  30 static inline void leave_mm(int cpu)
  31 {
  32 }
  33 #endif
  34
  35 #endif /* _ASM_X86_MMU_H */