From 2f87d942be9d0f86e44fbcbd473264c26c7f1809 Mon Sep 17 00:00:00 2001 From: Guenther Hutzl Date: Fri, 3 Jun 2016 14:37:17 +0200 Subject: [PATCH] KVM: s390: Introduce BCD Vector Instructions to the guest We can directly forward the vector BCD instructions to the guest if available and VX is requested by user space. Please note that user space will have to take care of the final state of the facility bit when migrating to older machines. Signed-off-by: Guenther Hutzl Reviewed-by: Christian Borntraeger Reviewed-by: David Hildenbrand Signed-off-by: Christian Borntraeger --- arch/s390/kvm/kvm-s390.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 1fd4b854efdc..69401b8d4521 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -505,6 +505,10 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) } else if (MACHINE_HAS_VX) { set_kvm_facility(kvm->arch.model.fac_mask, 129); set_kvm_facility(kvm->arch.model.fac_list, 129); + if (test_facility(134)) { + set_kvm_facility(kvm->arch.model.fac_mask, 134); + set_kvm_facility(kvm->arch.model.fac_list, 134); + } if (test_facility(135)) { set_kvm_facility(kvm->arch.model.fac_mask, 135); set_kvm_facility(kvm->arch.model.fac_list, 135);