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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-04-20 15:43:51 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-04-25 08:47:32 +0300 |
| commit | ee71d16d22bb268c1f6a64ef6d3654ace5f1e8c7 (patch) | |
| tree | 8e8ecc1da0ba8947a9b024a435262460d67caeff /arch/s390/mm/pgalloc.c | |
| parent | 5037c22c53603acd4e8c465d750fdd604c600bd3 (diff) | |
| download | linux-ee71d16d22bb268c1f6a64ef6d3654ace5f1e8c7.tar.xz | |
s390/mm: make TASK_SIZE independent from the number of page table levels
The TASK_SIZE for a process should be maximum possible size of the address
space, 2GB for a 31-bit process and 8PB for a 64-bit process. The number
of page table levels required for a given memory layout is a consequence
of the mapped memory areas and their location.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/pgalloc.c')
| -rw-r--r-- | arch/s390/mm/pgalloc.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c index 2776bad61094..f502cbe657af 100644 --- a/arch/s390/mm/pgalloc.c +++ b/arch/s390/mm/pgalloc.c @@ -95,7 +95,6 @@ int crst_table_upgrade(struct mm_struct *mm) mm->context.asce_limit = 1UL << 53; mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | _ASCE_USER_BITS | _ASCE_TYPE_REGION2; - mm->task_size = mm->context.asce_limit; spin_unlock_bh(&mm->page_table_lock); on_each_cpu(__crst_table_upgrade, mm, 0); @@ -119,7 +118,6 @@ void crst_table_downgrade(struct mm_struct *mm) mm->context.asce_limit = 1UL << 31; mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT; - mm->task_size = mm->context.asce_limit; crst_table_free(mm, (unsigned long *) pgd); if (current->active_mm == mm) |