From: Christian Borntraeger Date: Mon, 27 Feb 2017 20:14:47 +0000 (+0100) Subject: KVM: s390: Handle sthyi also for instruction intercept X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c0a6bfdc18b83290b65372a7687134052f382bdf;p=linux.git KVM: s390: Handle sthyi also for instruction intercept Right now we handle the STHYI only via the operation exception intercept (illegal instruction). If hardware ever decides to provide an instruction intercept for STHYI, we should handle that as well. Signed-off-by: Christian Borntraeger --- diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c index 59920f96ebc06..0a17646551531 100644 --- a/arch/s390/kvm/intercept.c +++ b/arch/s390/kvm/intercept.c @@ -368,8 +368,7 @@ static int handle_operexc(struct kvm_vcpu *vcpu) trace_kvm_s390_handle_operexc(vcpu, vcpu->arch.sie_block->ipa, vcpu->arch.sie_block->ipb); - if (vcpu->arch.sie_block->ipa == 0xb256 && - test_kvm_facility(vcpu->kvm, 74)) + if (vcpu->arch.sie_block->ipa == 0xb256) return handle_sthyi(vcpu); if (vcpu->arch.sie_block->ipa == 0 && vcpu->kvm->arch.user_instr0) diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 93d6cde8c3eae..26f30bab9c2f4 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -760,6 +760,7 @@ static const intercept_handler_t b2_handlers[256] = { [0x3b] = handle_io_inst, [0x3c] = handle_io_inst, [0x50] = handle_ipte_interlock, + [0x56] = handle_sthyi, [0x5f] = handle_io_inst, [0x74] = handle_io_inst, [0x76] = handle_io_inst, diff --git a/arch/s390/kvm/sthyi.c b/arch/s390/kvm/sthyi.c index 05c98bb853cf9..926b5244263ef 100644 --- a/arch/s390/kvm/sthyi.c +++ b/arch/s390/kvm/sthyi.c @@ -404,6 +404,9 @@ int handle_sthyi(struct kvm_vcpu *vcpu) u64 code, addr, cc = 0; struct sthyi_sctns *sctns = NULL; + if (!test_kvm_facility(vcpu->kvm, 74)) + return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); + /* * STHYI requires extensive locking in the higher hypervisors * and is very computational/memory expensive. Therefore we