From: Maxim Samoylov Date: Wed, 10 Feb 2016 09:31:23 +0000 (+0100) Subject: KVM: s390: Introduce Vector Enhancements facility 1 to the guest X-Git-Tag: v4.11-rc1~109^2~41^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=53743aa7f14671dea6f3567ddca2f7d97454f3fe;p=platform%2Fkernel%2Flinux-exynos.git KVM: s390: Introduce Vector Enhancements facility 1 to the guest We can directly forward the vector enhancement facility 1 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. Reviewed-by: David Hildenbrand Signed-off-by: Maxim Samoylov Signed-off-by: Christian Borntraeger --- diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 4f74511..1fd4b85 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(135)) { + set_kvm_facility(kvm->arch.model.fac_mask, 135); + set_kvm_facility(kvm->arch.model.fac_list, 135); + } r = 0; } else r = -EINVAL;