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KVM: s390: add vector BCD enhancements facility to cpumodel 

If vector support is enabled, the vector BCD enhancements facility
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>
This commit is contained in:
Christian Borntraeger 2018-12-28 09:45:58 +01:00
parent 7832e91cd3
commit d5cb6ab1e3
1 changed files with 4 additions and 0 deletions
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4
arch/s390/kvm/kvm-s390.c
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@ -661,6 +661,10 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
set_kvm_facility(kvm->arch.model.fac_mask, 148);
set_kvm_facility(kvm->arch.model.fac_list, 148);
}
if (test_facility(152)) {
set_kvm_facility(kvm->arch.model.fac_mask, 152);
set_kvm_facility(kvm->arch.model.fac_list, 152);
}
r = 0;
} else
r = -EINVAL;