projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __MMU_H |
| 2 | #define __MMU_H | |
| 3 | ||
| 1e3cab2f HC |
4 | #include <linux/errno.h> |
| 5 | ||
| 146e4b3c | 6 | typedef struct { |
| 050eef36 MS |
7 | atomic_t attach_count; |
| 8 | unsigned int flush_mm; | |
| 50aa98ba | 9 | spinlock_t list_lock; |
| 146e4b3c | 10 | struct list_head pgtable_list; |
| e5992f2e | 11 | struct list_head gmap_list; |
| 146e4b3c | 12 | unsigned long asce_bits; |
| 6252d702 | 13 | unsigned long asce_limit; |
| b020632e | 14 | unsigned long vdso_base; |
| b2fa47e6 MS |
15 | /* Cloned contexts will be created with extended page tables. */ |
| 16 | unsigned int alloc_pgste:1; | |
| 17 | /* The mmu context has extended page tables. */ | |
| 18 | unsigned int has_pgste:1; | |
| 146e4b3c | 19 | } mm_context_t; |
| 1da177e4 | 20 | |
| a1b200e2 HC |
21 | #define INIT_MM_CONTEXT(name) \ |
| 22 | .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \ | |
| e5992f2e MS |
23 | .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \ |
| 24 | .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list), | |
| a1b200e2 | 25 | |
| a0616cde DH |
26 | static inline int tprot(unsigned long addr) |
| 27 | { | |
| 28 | int rc = -EFAULT; | |
| 29 | ||
| 30 | asm volatile( | |
| 31 | " tprot 0(%1),0\n" | |
| 32 | "0: ipm %0\n" | |
| 33 | " srl %0,28\n" | |
| 34 | "1:\n" | |
| 35 | EX_TABLE(0b,1b) | |
| 36 | : "+d" (rc) : "a" (addr) : "cc"); | |
| 37 | return rc; | |
| 38 | } | |
| 39 | ||
| 1da177e4 | 40 | #endif |