diff --git a/src/lib.rs b/src/lib.rs
index 8441859..5b55438 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -233,17 +233,21 @@ pub struct EmulatedDeviceConfig {
 }
 
 /// A part of `AxVMConfig`, which represents the configuration of a pass-through device for a virtual machine.
-#[derive(Debug, Default, Clone, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Default, Clone, PartialEq, serde::Serialize, serde::Deserialize)]
 pub struct PassThroughDeviceConfig {
     /// The name of the device.
     pub name: String,
     /// The base GPA (Guest Physical Address) of the device.
+    #[serde(default)]
     pub base_gpa: usize,
     /// The base HPA (Host Physical Address) of the device.
+    #[serde(default)]
     pub base_hpa: usize,
     /// The address length of the device.
+    #[serde(default)]
     pub length: usize,
     /// The IRQ (Interrupt Request) ID of the device.
+    #[serde(default)]
     pub irq_id: usize,
 }
 
@@ -339,6 +343,9 @@ pub struct VMDevicesConfig {
     /// How the VM should handle interrupts and interrupt controllers.
     #[serde(default)]
     pub interrupt_mode: VMInterruptMode,
+    ///we would not like to pass through devices
+    #[serde(default)]
+    pub excluded_devices: Vec<Vec<String>>,
 }
 
 /// The configuration structure for the guest VM serialized from a toml file provided by user,
diff --git a/src/templates.rs b/src/templates.rs
index 7262501..20439f7 100644
--- a/src/templates.rs
+++ b/src/templates.rs
@@ -66,6 +66,7 @@ pub fn get_vm_config_template(
             emu_devices: vec![],                // No emulated devices by default
             passthrough_devices: vec![],        // No passthrough devices by default
             interrupt_mode: Default::default(), // Use default interrupt mode
+            excluded_devices: vec![],           // No excluded devices by default
         },
     }
 }