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- #ifndef _ASM_X86_MMU_H
- #define _ASM_X86_MMU_H
- #include <linux/spinlock.h>
- #include <linux/mutex.h>
- /*
- * The x86 doesn't have a mmu context, but
- * we put the segment information here.
- */
- typedef struct {
- #ifdef CONFIG_MODIFY_LDT_SYSCALL
- struct ldt_struct *ldt;
- #endif
- #ifdef CONFIG_X86_64
- /* True if mm supports a task running in 32 bit compatibility mode. */
- unsigned short ia32_compat;
- #endif
- struct mutex lock;
- void __user *vdso; /* vdso base address */
- const struct vdso_image *vdso_image; /* vdso image in use */
- atomic_t perf_rdpmc_allowed; /* nonzero if rdpmc is allowed */
- #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
- /*
- * One bit per protection key says whether userspace can
- * use it or not. protected by mmap_sem.
- */
- u16 pkey_allocation_map;
- s16 execute_only_pkey;
- #endif
- } mm_context_t;
- #ifdef CONFIG_SMP
- void leave_mm(int cpu);
- #else
- static inline void leave_mm(int cpu)
- {
- }
- #endif
- #endif /* _ASM_X86_MMU_H */
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