message: increase debug level to reduce the number of output messages
diff: @@ -873,7 +873,7 @@ static mut VIRTIO_IRQ_NO: u8 = 0;
  #[cfg(target_arch = "x86_64")]
  extern "x86-interrupt" fn virtio_irqhandler(_stack_frame: &mut ExceptionStackFrame) {
  - info!("Receive virtio interrupt");
  + debug!("Receive virtio interrupt");
  apic::eoi();
  increment_irq_counter((32 + unsafe { VIRTIO_IRQ_NO }).into());
  