4.9.4

internal/service/cloudapi/kvmvm/resource_compute.go

@@ -901,12 +901,17 @@ func resourceComputeUpdate(ctx context.Context, d *schema.ResourceData, m interf
 		}
 	}
 
-	// Note bene: numa_affinity, cpu_pin and hp_backed, cpu, ram are not allowed to be changed for compute in STARTED tech status.
+	// Note bene: numa_affinity, cpu_pin and hp_backed are not allowed to be changed for compute in STARTED tech status.
 	// If STARTED, we need to stop it before update
 	var isStopRequired bool
 	if d.HasChanges("numa_affinity", "cpu_pin", "hp_backed", "chipset", "preferred_cpu") && d.Get("started").(bool) {
 		isStopRequired = true
 	}
+
+	old, new := d.GetChange("cpu")
+	if old.(int) > new.(int) && d.Get("started").(bool) {
+		isStopRequired = true
+	}
 	if isStopRequired {
 		if _, err := c.CloudAPI().Compute().Stop(ctx, compute.StopRequest{ComputeID: computeRec.ID}); err != nil {
 			return diag.FromErr(err)