s390/sclp: detect interlock-and-broadcast-suppression facility

Let's detect that facility.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index bdb7f22d9ad44891414caf1ec354fbb4073fd0b2..99a0150d07b975831974cbe51ac9d55061d4b957 100644 (file)
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -72,6 +72,7 @@ struct sclp_info {
        unsigned char has_ib : 1;
        unsigned char has_cei : 1;
        unsigned char has_pfmfi : 1;
+       unsigned char has_ibs : 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 500cbfd835411c9c528db42164bf77bf5671f903..d5b873c92ffc24fc53f7e3d6aa6691d0e16cf7e6 100644 (file)
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -120,6 +120,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
        sclp.has_cmma = !!(sccb->fac116 & 0x40);
        sclp.has_esca = !!(sccb->fac116 & 0x08);
        sclp.has_pfmfi = !!(sccb->fac117 & 0x40);
+       sclp.has_ibs = !!(sccb->fac117 & 0x20);
        sclp.has_hvs = !!(sccb->fac119 & 0x80);
        if (sccb->fac85 & 0x02)
                S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;