projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef __MMU_H |
| 2 | #define __MMU_H | |
| 3 | ||
| 1b948d6c | 4 | #include <linux/cpumask.h> |
| 1e3cab2f HC |
5 | #include <linux/errno.h> |
| 6 | ||
| 146e4b3c | 7 | typedef struct { |
| 1b948d6c | 8 | cpumask_t cpu_attach_mask; |
| 050eef36 MS |
9 | atomic_t attach_count; |
| 10 | unsigned int flush_mm; | |
| 50aa98ba | 11 | spinlock_t list_lock; |
| 146e4b3c | 12 | struct list_head pgtable_list; |
| e5992f2e | 13 | struct list_head gmap_list; |
| 146e4b3c | 14 | unsigned long asce_bits; |
| 6252d702 | 15 | unsigned long asce_limit; |
| b020632e | 16 | unsigned long vdso_base; |
| 0b46e0a3 MS |
17 | /* The mmu context allocates 4K page tables. */ |
| 18 | unsigned int alloc_pgste:1; | |
| 19 | /* The mmu context uses extended page tables. */ | |
| b2fa47e6 | 20 | unsigned int has_pgste:1; |
| 65eef335 DD |
21 | /* The mmu context uses storage keys. */ |
| 22 | unsigned int use_skey:1; | |
| 146e4b3c | 23 | } mm_context_t; |
| 1da177e4 | 24 | |
| a1b200e2 HC |
25 | #define INIT_MM_CONTEXT(name) \ |
| 26 | .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \ | |
| e5992f2e MS |
27 | .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \ |
| 28 | .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list), | |
| a1b200e2 | 29 | |
| a0616cde DH |
30 | static inline int tprot(unsigned long addr) |
| 31 | { | |
| 32 | int rc = -EFAULT; | |
| 33 | ||
| 34 | asm volatile( | |
| 35 | " tprot 0(%1),0\n" | |
| 36 | "0: ipm %0\n" | |
| 37 | " srl %0,28\n" | |
| 38 | "1:\n" | |
| 39 | EX_TABLE(0b,1b) | |
| 40 | : "+d" (rc) : "a" (addr) : "cc"); | |
| 41 | return rc; | |
| 42 | } | |
| 43 | ||
| 1da177e4 | 44 | #endif |