#ifndef __MMU_H#define __MMU_Htypedefstruct{
spinlock_t list_lock;struct list_head crst_list;struct list_head pgtable_list;unsigned long asce_bits;unsigned long asce_limit;unsigned long vdso_base;int noexec;int has_pgste;/* The mmu context has extended page tables */int alloc_pgste;/* cloned contexts will have extended page tables */} mm_context_t;#endif