summaryrefslogtreecommitdiffstats
path: root/arch/s390/kvm/sigp.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/kvm/sigp.c')
-rw-r--r--arch/s390/kvm/sigp.c36
1 files changed, 17 insertions, 19 deletions
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 1a252f537081..9d592ef4104b 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -155,29 +155,26 @@ static int __sigp_stop_and_store_status(struct kvm_vcpu *vcpu,
return rc;
}
-static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
+static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter,
+ u64 *status_reg)
{
- int rc;
unsigned int i;
struct kvm_vcpu *v;
+ bool all_stopped = true;
- switch (parameter & 0xff) {
- case 0:
- rc = SIGP_CC_NOT_OPERATIONAL;
- break;
- case 1:
- case 2:
- kvm_for_each_vcpu(i, v, vcpu->kvm) {
- v->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID;
- kvm_clear_async_pf_completion_queue(v);
- }
-
- rc = SIGP_CC_ORDER_CODE_ACCEPTED;
- break;
- default:
- rc = -EOPNOTSUPP;
+ kvm_for_each_vcpu(i, v, vcpu->kvm) {
+ if (v == vcpu)
+ continue;
+ if (!is_vcpu_stopped(v))
+ all_stopped = false;
}
- return rc;
+
+ *status_reg &= 0xffffffff00000000UL;
+
+ /* Reject set arch order, with czam we're always in z/Arch mode. */
+ *status_reg |= (all_stopped ? SIGP_STATUS_INVALID_PARAMETER :
+ SIGP_STATUS_INCORRECT_STATE);
+ return SIGP_CC_STATUS_STORED;
}
static int __sigp_set_prefix(struct kvm_vcpu *vcpu, struct kvm_vcpu *dst_vcpu,
@@ -446,7 +443,8 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
switch (order_code) {
case SIGP_SET_ARCHITECTURE:
vcpu->stat.instruction_sigp_arch++;
- rc = __sigp_set_arch(vcpu, parameter);
+ rc = __sigp_set_arch(vcpu, parameter,
+ &vcpu->run->s.regs.gprs[r1]);
break;
default:
rc = handle_sigp_dst(vcpu, order_code, cpu_addr,