Commit 7832e91c authored Dec 28, 2018 by Christian Borntraeger

KVM: s390: add vector enhancements facility 2 to cpumodel



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@de.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>

parent 58616e6a

arch/s390/kvm/kvm-s390.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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;