diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-09-24 09:14:56 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-10-24 17:16:57 +0200 |
| commit | e258d719ff28ecc7a048eb8f78380e68c4b3a3f0 (patch) | |
| tree | 1c7f496b97cef1111b230371940e603a2ca401a4 /arch/s390/kernel/vdso.c | |
| parent | 7d7c7b24e416afb2637be8447e03ca4457c100fd (diff) | |
| download | linux-e258d719ff28ecc7a048eb8f78380e68c4b3a3f0.tar.bz2 | |
s390/uaccess: always run the kernel in home space
Simplify the uaccess code by removing the user_mode=home option.
The kernel will now always run in the home space mode.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/vdso.c')
| -rw-r--r-- | arch/s390/kernel/vdso.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 05d75c413137..a84476f2a9bb 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -84,8 +84,7 @@ struct vdso_data *vdso_data = &vdso_data_store.data; */ static void vdso_init_data(struct vdso_data *vd) { - vd->ectg_available = - s390_user_mode != HOME_SPACE_MODE && test_facility(31); + vd->ectg_available = test_facility(31); } #ifdef CONFIG_64BIT @@ -102,7 +101,7 @@ int vdso_alloc_per_cpu(struct _lowcore *lowcore) lowcore->vdso_per_cpu_data = __LC_PASTE; - if (s390_user_mode == HOME_SPACE_MODE || !vdso_enabled) + if (!vdso_enabled) return 0; segment_table = __get_free_pages(GFP_KERNEL, SEGMENT_ORDER); @@ -147,7 +146,7 @@ void vdso_free_per_cpu(struct _lowcore *lowcore) unsigned long segment_table, page_table, page_frame; u32 *psal, *aste; - if (s390_user_mode == HOME_SPACE_MODE || !vdso_enabled) + if (!vdso_enabled) return; psal = (u32 *)(addr_t) lowcore->paste[4]; @@ -165,7 +164,7 @@ static void vdso_init_cr5(void) { unsigned long cr5; - if (s390_user_mode == HOME_SPACE_MODE || !vdso_enabled) + if (!vdso_enabled) return; cr5 = offsetof(struct _lowcore, paste); __ctl_load(cr5, 5, 5); |