blob: bd6f303045185b7dbb2a4bc4a14d4c7729a84e4a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
#ifndef __MMU_H
#define __MMU_H
#include <linux/cpumask.h>
#include <linux/errno.h>
typedef struct {
cpumask_t cpu_attach_mask;
atomic_t flush_count;
unsigned int flush_mm;
spinlock_t pgtable_lock;
struct list_head pgtable_list;
spinlock_t gmap_lock;
struct list_head gmap_list;
unsigned long gmap_asce;
unsigned long asce;
unsigned long asce_limit;
unsigned long vdso_base;
/* The mmu context allocates 4K page tables. */
unsigned int alloc_pgste:1;
/* The mmu context uses extended page tables. */
unsigned int has_pgste:1;
/* The mmu context uses storage keys. */
unsigned int use_skey:1;
/* The mmu context uses CMMA. */
unsigned int use_cmma:1;
} mm_context_t;
#define INIT_MM_CONTEXT(name) \
.context.pgtable_lock = \
__SPIN_LOCK_UNLOCKED(name.context.pgtable_lock), \
.context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \
.context.gmap_lock = __SPIN_LOCK_UNLOCKED(name.context.gmap_lock), \
.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
|
