KVM: s390: enable ib only if available
Let's enable intervention bypass only if the facility is acutally
available.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 2a23955..340fb40 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1845,7 +1845,9 @@
if (test_kvm_facility(vcpu->kvm, 8))
vcpu->arch.sie_block->ecb2 |= 0x08;
- vcpu->arch.sie_block->eca = 0xC1002000U;
+ vcpu->arch.sie_block->eca = 0x81002000U;
+ if (sclp.has_ib)
+ vcpu->arch.sie_block->eca |= 0x40000000U;
if (sclp.has_siif)
vcpu->arch.sie_block->eca |= 1;
if (sclp.has_sigpif)