diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 5 | ||||
| -rw-r--r-- | arch/s390/mm/mmap.c | 4 | ||||
| -rw-r--r-- | arch/s390/mm/pgtable.c | 2 |
3 files changed, 6 insertions, 5 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 066b99502e0..db4523fe38a 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -61,7 +61,7 @@ extern void print_cpu_info(struct cpuinfo_S390 *); extern int get_cpu_capability(unsigned int *); /* - * User space process size: 2GB for 31 bit, 4TB for 64 bit. + * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit. */ #ifndef __s390x__ @@ -70,8 +70,7 @@ extern int get_cpu_capability(unsigned int *); #else /* __s390x__ */ -#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk,TIF_31BIT) ? \ - (1UL << 31) : (1UL << 53)) +#define TASK_SIZE_OF(tsk) ((tsk)->mm->context.asce_limit) #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \ (1UL << 30) : (1UL << 41)) #define TASK_SIZE TASK_SIZE_OF(current) diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index 5932a824547..346dd0c5cbd 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -35,7 +35,7 @@ * Leave an at least ~128 MB hole. */ #define MIN_GAP (128*1024*1024) -#define MAX_GAP (TASK_SIZE/6*5) +#define MAX_GAP (STACK_TOP/6*5) static inline unsigned long mmap_base(void) { @@ -46,7 +46,7 @@ static inline unsigned long mmap_base(void) else if (gap > MAX_GAP) gap = MAX_GAP; - return TASK_SIZE - (gap & PAGE_MASK); + return STACK_TOP - (gap & PAGE_MASK); } static inline int mmap_is_legacy(void) diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 0767827540b..6b6ddc4ea02 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -117,6 +117,7 @@ repeat: crst_table_init(table, entry); pgd_populate(mm, (pgd_t *) table, (pud_t *) pgd); mm->pgd = (pgd_t *) table; + mm->task_size = mm->context.asce_limit; table = NULL; } spin_unlock(&mm->page_table_lock); @@ -154,6 +155,7 @@ void crst_table_downgrade(struct mm_struct *mm, unsigned long limit) BUG(); } mm->pgd = (pgd_t *) (pgd_val(*pgd) & _REGION_ENTRY_ORIGIN); + mm->task_size = mm->context.asce_limit; crst_table_free(mm, (unsigned long *) pgd); } update_mm(mm, current); |