diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 00000000..9d52b3be
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,11 @@
+#![cfg_attr(not(test), no_std)]
+
+pub mod serial;
+pub mod vga_buffer;
+
+pub unsafe fn exit_qemu() {
+    use x86_64::instructions::port::Port;
+
+    let mut port = Port::<u32>::new(0xf4);
+    port.write(0);
+}
diff --git a/src/main.rs b/src/main.rs
index 5fcae60c..9a14d932 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,31 +2,17 @@
 #![cfg_attr(not(test), no_main)]
 #![cfg_attr(test, allow(unused_imports))]
 
+use blog_os::println;
 use core::panic::PanicInfo;
 
-mod serial;
-mod vga_buffer;
-
 #[cfg(not(test))]
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
     println!("Hello World{}", "!");
-    serial_println!("Hello Host{}", "!");
-
-    unsafe {
-        exit_qemu();
-    }
 
     loop {}
 }
 
-pub unsafe fn exit_qemu() {
-    use x86_64::instructions::port::Port;
-
-    let mut port = Port::<u32>::new(0xf4);
-    port.write(0);
-}
-
 /// This function is called on panic.
 #[cfg(not(test))]
 #[panic_handler]