2024-09-09 08:52:07 +00:00
|
|
|
#ifndef __MMU_H
|
|
|
|
|
#define __MMU_H
|
|
|
|
|
|
2024-09-09 08:57:42 +00:00
|
|
|
#include <linux/cpumask.h>
|
2024-09-09 08:52:07 +00:00
|
|
|
#include <linux/errno.h>
|
|
|
|
|
|
|
|
|
|
typedef struct {
|
2024-09-09 08:57:42 +00:00
|
|
|
cpumask_t cpu_attach_mask;
|
2024-09-09 08:52:07 +00:00
|
|
|
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;
|
2024-09-09 08:57:42 +00:00
|
|
|
/* The mmu context uses storage keys. */
|
|
|
|
|
unsigned int use_skey:1;
|
2024-09-09 08:52:07 +00:00
|
|
|
} 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
|
