diff options
Diffstat (limited to 'include/asm-s390/mmu_context.h')
-rw-r--r-- | include/asm-s390/mmu_context.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/include/asm-s390/mmu_context.h b/include/asm-s390/mmu_context.h deleted file mode 100644 index 4c2fbf48c9c4..000000000000 --- a/include/asm-s390/mmu_context.h +++ /dev/null | |||
@@ -1,77 +0,0 @@ | |||
1 | /* | ||
2 | * include/asm-s390/mmu_context.h | ||
3 | * | ||
4 | * S390 version | ||
5 | * | ||
6 | * Derived from "include/asm-i386/mmu_context.h" | ||
7 | */ | ||
8 | |||
9 | #ifndef __S390_MMU_CONTEXT_H | ||
10 | #define __S390_MMU_CONTEXT_H | ||
11 | |||
12 | #include <asm/pgalloc.h> | ||
13 | #include <asm/uaccess.h> | ||
14 | #include <asm-generic/mm_hooks.h> | ||
15 | |||
16 | static inline int init_new_context(struct task_struct *tsk, | ||
17 | struct mm_struct *mm) | ||
18 | { | ||
19 | mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS; | ||
20 | #ifdef CONFIG_64BIT | ||
21 | mm->context.asce_bits |= _ASCE_TYPE_REGION3; | ||
22 | #endif | ||
23 | if (current->mm->context.pgstes) { | ||
24 | mm->context.noexec = 0; | ||
25 | mm->context.pgstes = 1; | ||
26 | } else { | ||
27 | mm->context.noexec = s390_noexec; | ||
28 | mm->context.pgstes = 0; | ||
29 | } | ||
30 | mm->context.asce_limit = STACK_TOP_MAX; | ||
31 | crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm)); | ||
32 | return 0; | ||
33 | } | ||
34 | |||
35 | #define destroy_context(mm) do { } while (0) | ||
36 | |||
37 | #ifndef __s390x__ | ||
38 | #define LCTL_OPCODE "lctl" | ||
39 | #else | ||
40 | #define LCTL_OPCODE "lctlg" | ||
41 | #endif | ||
42 | |||
43 | static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk) | ||
44 | { | ||
45 | pgd_t *pgd = mm->pgd; | ||
46 | |||
47 | S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd); | ||
48 | if (switch_amode) { | ||
49 | /* Load primary space page table origin. */ | ||
50 | pgd = mm->context.noexec ? get_shadow_table(pgd) : pgd; | ||
51 | S390_lowcore.user_exec_asce = mm->context.asce_bits | __pa(pgd); | ||
52 | asm volatile(LCTL_OPCODE" 1,1,%0\n" | ||
53 | : : "m" (S390_lowcore.user_exec_asce) ); | ||
54 | } else | ||
55 | /* Load home space page table origin. */ | ||
56 | asm volatile(LCTL_OPCODE" 13,13,%0" | ||
57 | : : "m" (S390_lowcore.user_asce) ); | ||
58 | set_fs(current->thread.mm_segment); | ||
59 | } | ||
60 | |||
61 | static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, | ||
62 | struct task_struct *tsk) | ||
63 | { | ||
64 | cpu_set(smp_processor_id(), next->cpu_vm_mask); | ||
65 | update_mm(next, tsk); | ||
66 | } | ||
67 | |||
68 | #define enter_lazy_tlb(mm,tsk) do { } while (0) | ||
69 | #define deactivate_mm(tsk,mm) do { } while (0) | ||
70 | |||
71 | static inline void activate_mm(struct mm_struct *prev, | ||
72 | struct mm_struct *next) | ||
73 | { | ||
74 | switch_mm(prev, next, current); | ||
75 | } | ||
76 | |||
77 | #endif /* __S390_MMU_CONTEXT_H */ | ||