aboutsummaryrefslogtreecommitdiff
path: root/arch/s390/kvm
diff options
context:
space:
mode:
authorMartin Schwidefsky <schwidefsky@de.ibm.com>2010-10-25 16:10:51 +0200
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-10-25 16:10:21 +0200
commit14375bc4eb8dd0fb0e765390650564c35bb31068 (patch)
tree27200620658245c582ee9497fc969a082b304cab /arch/s390/kvm
parenteca577ef5989d25dedc6b0fae3c4622ceaee8005 (diff)
downloadlinux-linaro-android-14375bc4eb8dd0fb0e765390650564c35bb31068.tar.gz
[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>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/kvm-s390.c2
-rw-r--r--arch/s390/kvm/priv.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 76482b65ba3..985d825494f 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 44205507717..9194a4b52b2 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));