diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-02-09 18:24:35 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-02-09 18:24:40 +0100 |
| commit | 146e4b3c8b92071b18f0b2e6f47165bad4f9e825 (patch) | |
| tree | 7e9db61cacca0f55ce34db089f27fc22a56ebbdd /include/asm-s390/mmu_context.h | |
| parent | 0c1f1dcd8c7792aeff6ef62e9508b0041928ab87 (diff) | |
[S390] 1K/2K page table pages.
This patch implements 1K/2K page table pages for s390.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/mmu_context.h')
| -rw-r--r-- | include/asm-s390/mmu_context.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/include/asm-s390/mmu_context.h b/include/asm-s390/mmu_context.h index a77d4ba3c8eb..3eaac5efc632 100644 --- a/include/asm-s390/mmu_context.h +++ b/include/asm-s390/mmu_context.h @@ -10,15 +10,17 @@ #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_TABLE_LENGTH | _ASCE_USER_BITS; + mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS; #ifdef CONFIG_64BIT - mm->context |= _ASCE_TYPE_REGION3; + mm->context.asce_bits |= _ASCE_TYPE_REGION3; #endif + mm->context.noexec = s390_noexec; return 0; } @@ -32,11 +34,13 @@ static inline int init_new_context(struct task_struct *tsk, static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk) { - S390_lowcore.user_asce = mm->context | __pa(mm->pgd); + 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_t *shadow_pgd = get_shadow_table(mm->pgd) ? : mm->pgd; - S390_lowcore.user_exec_asce = mm->context | __pa(shadow_pgd); + 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 |