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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-10-25 14:10:51 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 14:10:21 (GMT) |
| commit | 14375bc4eb8dd0fb0e765390650564c35bb31068 (patch) | |
| tree | 27200620658245c582ee9497fc969a082b304cab /arch/s390/kernel/vdso.c | |
| parent | eca577ef5989d25dedc6b0fae3c4622ceaee8005 (diff) | |
| download | linux-14375bc4eb8dd0fb0e765390650564c35bb31068.tar.xz | |
[S390] cleanup facility list handling
Store the facility list once at system startup with stfl/stfle and
reuse the result for all facility tests.
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 | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 6b83870..e3150dd 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -84,11 +84,7 @@ struct vdso_data *vdso_data = &vdso_data_store.data; */ static void vdso_init_data(struct vdso_data *vd) { - unsigned int facility_list; - - facility_list = stfl(); - vd->ectg_available = - user_mode != HOME_SPACE_MODE && (facility_list & 1); + vd->ectg_available = user_mode != HOME_SPACE_MODE && test_facility(31); } #ifdef CONFIG_64BIT |