diff --git a/docs/resource_managment.md b/docs/resource_managment.md
index 2272852f7..012b1d96c 100644
--- a/docs/resource_managment.md
+++ b/docs/resource_managment.md
@@ -3,6 +3,20 @@
 ## CPU Model
 By default, libvirt runs QEMU with a CPU model that doesn't support nested virtualization. It's possible to change this behavior by using `VirtletCPUModel: host-model` annotation in the pod definition. You can also use `cpuModel` value in Virtlet config to override the value globally for the cluster or for a particular subset of nodes.
 
+If you are familiar with the cpu part in libvirt domain definition, you can use `VirtletLibvirtCPUSetting` annotation, the value is directly passed to libvirt after translating form yaml style. it is more flexible.
+For example:
+```
+  annotations:
+    VirtletLibvirtCPUSetting: |
+      mode: custom
+      model:
+        value: Westmere
+      features:
+      - name: avx
+        policy: disable
+```
+See [cpuSetting](../examples/ubuntu-vm-with-libvirt-cpusetting.yaml) for a full example.
+
 ## Resource monitoring on the node
 As Kubelet uses cAdvisor to collect metrics about running containers and Virtlet doesn't create container per each VM, and instead spawns VMs inside Virtlet container. This leads to all the resource usage being lumped together and ascribed to Virtlet pod.
 
diff --git a/pkg/libvirttools/TestContainerLifecycle.out.yaml b/pkg/libvirttools/TestContainerLifecycle.out.yaml
index e7866434c..c35747d77 100755
--- a/pkg/libvirttools/TestContainerLifecycle.out.yaml
+++ b/pkg/libvirttools/TestContainerLifecycle.out.yaml
@@ -113,6 +113,7 @@
       ParsedAnnotations:
         CDImageType: nocloud
         CPUModel: ""
+        CPUSetting: null
         DiskDriver: scsi
         MetaData: null
         SSHKeys: null
@@ -165,6 +166,7 @@
       ParsedAnnotations:
         CDImageType: nocloud
         CPUModel: ""
+        CPUSetting: null
         DiskDriver: scsi
         MetaData: null
         SSHKeys: null
@@ -212,6 +214,7 @@
       ParsedAnnotations:
         CDImageType: nocloud
         CPUModel: ""
+        CPUSetting: null
         DiskDriver: scsi
         MetaData: null
         SSHKeys: null
diff --git a/pkg/libvirttools/TestDomainForcedShutdown.out.yaml b/pkg/libvirttools/TestDomainForcedShutdown.out.yaml
index 9db04b38b..e537318e9 100755
--- a/pkg/libvirttools/TestDomainForcedShutdown.out.yaml
+++ b/pkg/libvirttools/TestDomainForcedShutdown.out.yaml
@@ -129,6 +129,7 @@
       ParsedAnnotations:
         CDImageType: nocloud
         CPUModel: ""
+        CPUSetting: null
         DiskDriver: scsi
         MetaData: null
         SSHKeys: null