From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Fri, 28 Dec 2018 09:43:37 +0100
Subject: KVM: s390: add vector enhancements facility 2 to cpumodel
Git-commit: 7832e91cd33f21f3cf82b003478c292915a1ec14
Patch-mainline: v5.2-rc1
References: jsc#SLE-6240 FATE#327380

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>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 arch/s390/kvm/kvm-s390.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -620,6 +620,10 @@ static int kvm_vm_ioctl_enable_cap(struc
 				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;