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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
| commit | aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece (patch) | |
| tree | 3f9e98fadd5124fb05e8f6f9b06aa23698d4f215 /arch/s390/include/asm/mmu_context.h | |
| parent | cca8edfd2ec2a34d9f50f593bc753bb11e1bc1f5 (diff) | |
| parent | 3c6b50141ef9f0a8844bf1357b80c0cdf518bf05 (diff) | |
Merge branch 'next' into for-linus
Diffstat (limited to 'arch/s390/include/asm/mmu_context.h')
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index a6f0e7cc9cd..5682f160ff8 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -23,7 +23,7 @@ static inline int init_new_context(struct task_struct *tsk, #ifdef CONFIG_64BIT mm->context.asce_bits |= _ASCE_TYPE_REGION3; #endif - if (current->mm->context.alloc_pgste) { + if (current->mm && current->mm->context.alloc_pgste) { /* * alloc_pgste indicates, that any NEW context will be created * with extended page tables. The old context is unchanged. The @@ -35,11 +35,9 @@ static inline int init_new_context(struct task_struct *tsk, * and if has_pgste is set, it will create extended page * tables. */ - mm->context.noexec = 0; mm->context.has_pgste = 1; mm->context.alloc_pgste = 1; } else { - mm->context.noexec = (user_mode == SECONDARY_SPACE_MODE); mm->context.has_pgste = 0; mm->context.alloc_pgste = 0; } @@ -63,10 +61,8 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk) S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd); if (user_mode != HOME_SPACE_MODE) { /* 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) ); + : : "m" (S390_lowcore.user_asce) ); } else /* Load home space page table origin. */ asm volatile(LCTL_OPCODE" 13,13,%0" |