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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-10-25 16:10:51 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 16:10:21 +0200 |
| commit | 14375bc4eb8dd0fb0e765390650564c35bb31068 (patch) | |
| tree | 27200620658245c582ee9497fc969a082b304cab /arch/s390/kvm | |
| parent | eca577ef5989d25dedc6b0fae3c4622ceaee8005 (diff) | |
| download | linux-stable-14375bc4eb8dd0fb0e765390650564c35bb31068.tar.gz linux-stable-14375bc4eb8dd0fb0e765390650564c35bb31068.tar.bz2 linux-stable-14375bc4eb8dd0fb0e765390650564c35bb31068.zip | |
[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.c | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/priv.c | 4 |
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)); |