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 */ | ||
