diff options
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index 9f973d8de90e..f61e21848845 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -17,12 +17,15 @@ static inline int init_new_context(struct task_struct *tsk, { atomic_set(&mm->context.attach_count, 0); mm->context.flush_mm = 0; - mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS; + mm->context.has_pgste = 0; + if (mm->context.asce_limit == 0) { + /* context created by exec, set asce limit to 4TB */ + mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS; #ifdef CONFIG_64BIT - mm->context.asce_bits |= _ASCE_TYPE_REGION3; + mm->context.asce_bits |= _ASCE_TYPE_REGION3; #endif - mm->context.has_pgste = 0; - mm->context.asce_limit = STACK_TOP_MAX; + mm->context.asce_limit = STACK_TOP_MAX; + } crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm)); return 0; } @@ -75,10 +78,6 @@ static inline void activate_mm(struct mm_struct *prev, static inline void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm) { -#ifdef CONFIG_64BIT - if (oldmm->context.asce_limit < mm->context.asce_limit) - crst_table_downgrade(mm, oldmm->context.asce_limit); -#endif } static inline void arch_exit_mmap(struct mm_struct *mm) |