--- x/arch/x86/kvm/hyperv.c
+++ y/arch/x86/kvm/hyperv.c
@@ -657,10 +657,8 @@ static int stimer_start(struct kvm_vcpu_
 					stimer->index,
 					time_now, stimer->exp_time);
 
-		hrtimer_start(&stimer->timer,
-			      ktime_add_ns(ktime_now,
-					   100 * (stimer->exp_time - time_now)),
-			      HRTIMER_MODE_ABS);
+		hrtimer_forward_now(&stimer->timer,
+				    ns_to_ktime(100 * (stimer->exp_time - time_now)));
 		return 0;
 	}
 	stimer->exp_time = stimer->count;
@@ -679,9 +677,7 @@ static int stimer_start(struct kvm_vcpu_
 					   stimer->index,
 					   time_now, stimer->count);
 
-	hrtimer_start(&stimer->timer,
-		      ktime_add_ns(ktime_now, 100 * (stimer->count - time_now)),
-		      HRTIMER_MODE_ABS);
+	hrtimer_forward_now(&stimer->timer, ns_to_ktime(100 * (stimer->count - time_now)));
 	return 0;
 }