diff options
| author | Farhan Ali | 2017-02-23 13:39:17 -0500 |
|---|---|---|
| committer | Christian Borntraeger | 2017-04-21 11:08:04 +0200 |
| commit | 71cb1bf66ef0d1d36ff3f04150450df9dd8af654 (patch) | |
| tree | 8b5e0385d54aab2ee97af57d9a59a2742af27b76 | |
| parent | 80248559992a05573b2db7865490eb82c745db87 (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>
| -rw-r--r-- | arch/s390/include/asm/sclp.h | 1 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index ace3bd315438..6f5167bc1928 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -75,6 +75,7 @@ struct sclp_info { unsigned char has_pfmfi : 1; unsigned char has_ibs : 1; unsigned char has_skey : 1; + unsigned char has_kss : 1; unsigned int ibc; unsigned int mtid; unsigned int mtid_cp; 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; |