aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390/char
diff options
context:
space:
mode:
authorFarhan Ali2017-02-23 13:39:17 -0500
committerChristian Borntraeger2017-04-21 11:08:04 +0200
commit71cb1bf66ef0d1d36ff3f04150450df9dd8af654 (patch)
tree8b5e0385d54aab2ee97af57d9a59a2742af27b76 /drivers/s390/char
parent80248559992a05573b2db7865490eb82c745db87 (diff)
s390/sclp: Detect KSS facility
Let's detect the keyless subset facility. Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'drivers/s390/char')
-rw-r--r--drivers/s390/char/sclp_early.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index 519ec1787117..efd84d1d178b 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -40,7 +40,8 @@ struct read_info_sccb {
u8 fac85; /* 85 */
u8 _pad_86[91 - 86]; /* 86-90 */
u8 flags; /* 91 */
- u8 _pad_92[99 - 92]; /* 92-98 */
+ u8 _pad_92[98 - 92]; /* 92-97 */
+ u8 fac98; /* 98 */
u8 hamaxpow; /* 99 */
u32 rnsize2; /* 100-103 */
u64 rnmax2; /* 104-111 */
@@ -99,6 +100,7 @@ static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb)
sclp.has_pfmfi = !!(sccb->fac117 & 0x40);
sclp.has_ibs = !!(sccb->fac117 & 0x20);
sclp.has_hvs = !!(sccb->fac119 & 0x80);
+ sclp.has_kss = !!(sccb->fac98 & 0x01);
if (sccb->fac85 & 0x02)
S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
sclp.rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;