#ifndef __MMU_H
#define __MMU_H

#include <linux/errno.h>

typedef struct {
atomic_t attach_count;
unsigned int flush_mm;
spinlock_t list_lock;
struct list_head pgtable_list;
struct list_head gmap_list;
unsigned long asce_bits;
unsigned long asce_limit;
unsigned long vdso_base;
/* The mmu context has extended page tables. */
unsigned int has_pgste:1;
} mm_context_t;

#define INIT_MM_CONTEXT(name) \
.context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \
.context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \
.context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list),

static inline int tprot(unsigned long addr)
{
int rc = -EFAULT;

asm volatile(
" tprot 0(%1),0\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
EX_TABLE(0b,1b)
: "+d" (rc) : "a" (addr) : "cc");
return rc;
}

#endif