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 4c2fbf48c9c..00000000000 --- a/include/asm-s390/mmu_context.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - * include/asm-s390/mmu_context.h - * - * S390 version - * - * Derived from "include/asm-i386/mmu_context.h" - */ - -#ifndef __S390_MMU_CONTEXT_H -#define __S390_MMU_CONTEXT_H - -#include <asm/pgalloc.h> -#include <asm/uaccess.h> -#include <asm-generic/mm_hooks.h> - -static inline int init_new_context(struct task_struct *tsk, - struct mm_struct *mm) -{ - mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS; -#ifdef CONFIG_64BIT - mm->context.asce_bits |= _ASCE_TYPE_REGION3; -#endif - if (current->mm->context.pgstes) { - mm->context.noexec = 0; - mm->context.pgstes = 1; - } else { - mm->context.noexec = s390_noexec; - mm->context.pgstes = 0; - } - mm->context.asce_limit = STACK_TOP_MAX; - crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm)); - return 0; -} - -#define destroy_context(mm) do { } while (0) - -#ifndef __s390x__ -#define LCTL_OPCODE "lctl" -#else -#define LCTL_OPCODE "lctlg" -#endif - -static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk) -{ - pgd_t *pgd = mm->pgd; - - S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd); - if (switch_amode) { - /* Load primary space page table origin. */ - pgd = mm->context.noexec ? get_shadow_table(pgd) : pgd; - S390_lowcore.user_exec_asce = mm->context.asce_bits | __pa(pgd); - asm volatile(LCTL_OPCODE" 1,1,%0\n" - : : "m" (S390_lowcore.user_exec_asce) ); - } else - /* Load home space page table origin. */ - asm volatile(LCTL_OPCODE" 13,13,%0" - : : "m" (S390_lowcore.user_asce) ); - set_fs(current->thread.mm_segment); -} - -static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, - struct task_struct *tsk) -{ - cpu_set(smp_processor_id(), next->cpu_vm_mask); - update_mm(next, tsk); -} - -#define enter_lazy_tlb(mm,tsk) do { } while (0) -#define deactivate_mm(tsk,mm) do { } while (0) - -static inline void activate_mm(struct mm_struct *prev, - struct mm_struct *next) -{ - switch_mm(prev, next, current); -} - -#endif /* __S390_MMU_CONTEXT_H */ |