s390/mm: implement software dirty bits

[cascardo/linux.git] / drivers / s390 / char / sclp_cmd.c

diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index c44d13f..30a2255 100644 (file)
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -56,7 +56,6 @@ static int __initdata early_read_info_sccb_valid;
 
 u64 sclp_facilities;
 static u8 sclp_fac84;
-static u8 sclp_fac85;
 static unsigned long long rzm;
 static unsigned long long rnmax;
 
@@ -131,7 +130,8 @@ void __init sclp_facilities_detect(void)
        sccb = &early_read_info_sccb;
        sclp_facilities = sccb->facilities;
        sclp_fac84 = sccb->fac84;
-       sclp_fac85 = sccb->fac85;
+       if (sccb->fac85 & 0x02)
+               S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
        rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
        rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
        rzm <<= 20;
@@ -171,12 +171,6 @@ unsigned long long sclp_get_rzm(void)
        return rzm;
 }
 
-u8 sclp_get_fac85(void)
-{
-       return sclp_fac85;
-}
-EXPORT_SYMBOL_GPL(sclp_get_fac85);
-
 /*
  * This function will be called after sclp_facilities_detect(), which gets
  * called from early.c code. Therefore the sccb should have valid contents.