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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>
This commit is contained in:
David Hildenbrand 2016-04-04 15:46:26 +02:00 committed by Christian Borntraeger
parent 72cd82b9e9
commit 11ad65b79e
1 changed files with 3 additions and 1 deletions
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4
arch/s390/kvm/kvm-s390.c
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@ -1845,7 +1845,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
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)