[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>

2 files changed, 3 insertions, 3 deletions

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 76482b65ba3e..985d825494f1 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -740,7 +740,7 @@ static int __init kvm_s390_init(void)
                 kvm_exit();
                 return -ENOMEM;
         }
-        stfle(facilities, 1);
+        memcpy(facilities, S390_lowcore.stfle_fac_list, 16);
         facilities[0] &= 0xff00fff3f47c0000ULL;
         return 0;
 }
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 44205507717c..9194a4b52b22 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -154,12 +154,12 @@ static int handle_chsc(struct kvm_vcpu *vcpu)
 
 static int handle_stfl(struct kvm_vcpu *vcpu)
 {
-        unsigned int facility_list = stfl();
+        unsigned int facility_list;
         int rc;
 
         vcpu->stat.instruction_stfl++;
         /* only pass the facility bits, which we can handle */
-        facility_list &= 0xff00fff3;
+        facility_list = S390_lowcore.stfl_fac_list & 0xff00fff3;
 
         rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
                            &facility_list, sizeof(facility_list));