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-rw-r--r--arch/s390/kvm/pv.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c
index 13a41533eacf..63e330109b63 100644
--- a/arch/s390/kvm/pv.c
+++ b/arch/s390/kvm/pv.c
@@ -283,3 +283,21 @@ int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size,
KVM_UV_EVENT(kvm, 3, "%s", "PROTVIRT VM UNPACK: successful");
return ret;
}
+
+int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state)
+{
+ struct uv_cb_cpu_set_state uvcb = {
+ .header.cmd = UVC_CMD_CPU_SET_STATE,
+ .header.len = sizeof(uvcb),
+ .cpu_handle = kvm_s390_pv_cpu_get_handle(vcpu),
+ .state = state,
+ };
+ int cc;
+
+ cc = uv_call(0, (u64)&uvcb);
+ KVM_UV_EVENT(vcpu->kvm, 3, "PROTVIRT SET CPU %d STATE %d rc %x rrc %x",
+ vcpu->vcpu_id, state, uvcb.header.rc, uvcb.header.rrc);
+ if (cc)
+ return -EINVAL;
+ return 0;
+}