[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>
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 @@
*/
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
