diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-02-12 15:08:27 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-03-25 13:49:33 +0300 |
| commit | 5a79859ae0f35d25c67a03e82bf0c80592f16a39 (patch) | |
| tree | 37264d49f069812f19ced94e6ae171814fb7e498 /arch/s390/mm/mmap.c | |
| parent | 1833c9f647e9bda1cd24653ff8f9c207b5f5b911 (diff) | |
| download | linux-5a79859ae0f35d25c67a03e82bf0c80592f16a39.tar.xz | |
s390: remove 31 bit support
Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.
The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.
Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/mmap.c')
| -rw-r--r-- | arch/s390/mm/mmap.c | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index 179a2c20b01f..2e8378796e87 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -190,29 +190,6 @@ unsigned long randomize_et_dyn(void) return base + mmap_rnd(); } -#ifndef CONFIG_64BIT - -/* - * This function, called very early during the creation of a new - * process VM image, sets up which VM layout function to use: - */ -void arch_pick_mmap_layout(struct mm_struct *mm) -{ - /* - * Fall back to the standard layout if the personality - * bit is set, or if the expected stack growth is unlimited: - */ - if (mmap_is_legacy()) { - mm->mmap_base = mmap_base_legacy(); - mm->get_unmapped_area = arch_get_unmapped_area; - } else { - mm->mmap_base = mmap_base(); - mm->get_unmapped_area = arch_get_unmapped_area_topdown; - } -} - -#else - int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags) { if (is_compat_task() || (TASK_SIZE >= (1UL << 53))) @@ -317,5 +294,3 @@ static int __init setup_mmap_rnd(void) return 0; } early_initcall(setup_mmap_rnd); - -#endif |