diff --git a/vmm/src/device_manager.rs b/vmm/src/device_manager.rs
index dec41e04e..eccacc14d 100644
--- a/vmm/src/device_manager.rs
+++ b/vmm/src/device_manager.rs
@@ -669,6 +669,13 @@ impl DeviceManager {
                 exit_evt, reset_evt,
             )));
 
+            address_manager
+                .allocator
+                .lock()
+                .unwrap()
+                .allocate_io_addresses(Some(GuestAddress(0x3c0)), 0x8, None)
+                .ok_or(DeviceManagerError::AllocateIOPort)?;
+
             address_manager
                 .io_bus
                 .insert(acpi_device.clone(), 0x3c0, 0x4)