projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef __MMU_H |
| 3 | #define __MMU_H | |
| 4 | ||
| 1b948d6c | 5 | #include <linux/cpumask.h> |
| 1e3cab2f HC |
6 | #include <linux/errno.h> |
| 7 | ||
| 146e4b3c | 8 | typedef struct { |
| 60f07c8e | 9 | spinlock_t lock; |
| 1b948d6c | 10 | cpumask_t cpu_attach_mask; |
| 64f31d58 | 11 | atomic_t flush_count; |
| 050eef36 | 12 | unsigned int flush_mm; |
| 146e4b3c | 13 | struct list_head pgtable_list; |
| e5992f2e | 14 | struct list_head gmap_list; |
| 44b6cc81 | 15 | unsigned long gmap_asce; |
| 723cacbd | 16 | unsigned long asce; |
| 6252d702 | 17 | unsigned long asce_limit; |
| b020632e | 18 | unsigned long vdso_base; |
| 0b46e0a3 MS |
19 | /* The mmu context allocates 4K page tables. */ |
| 20 | unsigned int alloc_pgste:1; | |
| 21 | /* The mmu context uses extended page tables. */ | |
| b2fa47e6 | 22 | unsigned int has_pgste:1; |
| 65eef335 DD |
23 | /* The mmu context uses storage keys. */ |
| 24 | unsigned int use_skey:1; | |
| aa824e13 CI |
25 | /* The mmu context uses CMMA. */ |
| 26 | unsigned int use_cmma:1; | |
| 146e4b3c | 27 | } mm_context_t; |
| 1da177e4 | 28 | |
| 8ecb1a59 | 29 | #define INIT_MM_CONTEXT(name) \ |
| 60f07c8e | 30 | .context.lock = __SPIN_LOCK_UNLOCKED(name.context.lock), \ |
| 8ecb1a59 | 31 | .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \ |
| e5992f2e | 32 | .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list), |
| a1b200e2 | 33 | |
| a0616cde DH |
34 | static inline int tprot(unsigned long addr) |
| 35 | { | |
| 36 | int rc = -EFAULT; | |
| 37 | ||
| 38 | asm volatile( | |
| 39 | " tprot 0(%1),0\n" | |
| 40 | "0: ipm %0\n" | |
| 41 | " srl %0,28\n" | |
| 42 | "1:\n" | |
| 43 | EX_TABLE(0b,1b) | |
| 44 | : "+d" (rc) : "a" (addr) : "cc"); | |
| 45 | return rc; | |
| 46 | } | |
| 47 | ||
| 1da177e4 | 48 | #endif |