diff --git a/Cargo.toml b/Cargo.toml
index 9758b63..9469972 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,5 @@ license = "GPL-3.0-or-later OR Apache-2.0 OR MulanPSL-2.0" # MulanPubL2 is not i
 axerrno = "0.1.0"
 memory_addr = "0.4"
 percpu = "0.2.0"
-
 axaddrspace = "=0.1.0"
 axvisor_api = "=0.1.0"
diff --git a/src/vcpu.rs b/src/vcpu.rs
index d4600ca..031c586 100644
--- a/src/vcpu.rs
+++ b/src/vcpu.rs
@@ -137,6 +137,11 @@ impl<A: AxArchVCpu> AxVCpu<A> {
         self.inner_const.vcpu_id
     }
 
+    /// Get the id of the VM this vcpu belongs to.
+    pub const fn vm_id(&self) -> VMId {
+        self.inner_const.vm_id
+    }
+
     /// Returns the preferred physical CPU for this VCpu.
     ///
     /// This is used for CPU affinity optimization - the scheduler should