From 11ad65b79e8c27cdafe404e33938da270a55858a Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Mon, 4 Apr 2016 15:46:26 +0200 Subject: [PATCH] KVM: s390: enable ib only if available Let's enable intervention bypass only if the facility is acutally available. Reviewed-by: Christian Borntraeger Signed-off-by: David Hildenbrand Signed-off-by: Christian Borntraeger --- arch/s390/kvm/kvm-s390.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 2a239554eb89..340fb405bc23 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -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) -- 2.20.1