On 17.04.19 17:28, Christian Borntraeger wrote:
> If vector support is enabled, the vector enhancements facility 2
> might also be enabled.
> We can directly forward this facility to the guest if available
> and VX is requested by user space.
>
> Please note that user space can and will have the final decision
> on the facility bits for a guests.
>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> Reviewed-by: Collin Walling <walling@xxxxxxxxxxxxx>
> ---
> 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 4638303ba6a8..03ddbe5e62bc 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -657,6 +657,10 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
> set_kvm_facility(kvm->arch.model.fac_mask, 135);
> set_kvm_facility(kvm->arch.model.fac_list, 135);
> }
> + if (test_facility(148)) {
> + set_kvm_facility(kvm->arch.model.fac_mask, 148);
> + set_kvm_facility(kvm->arch.model.fac_list, 148);
> + }
> r = 0;
> } else
> r = -EINVAL;
>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
--
Thanks,
David / dhildenb
