This is version 2.18 of the AWS Elemental Server documentation. This is the latest version. For prior versions, see the *Previous Versions* section of [AWS Elemental Conductor File and AWS Elemental Server Documentation](https://docs.aws.amazon.com/elemental-server/).

# Step C: Enable CPU Passthrough
<a name="install-kvm-srvr-ig-passthrough"></a>

Enable CPU passthrough so that the KVM can tell what CPU you're using. The AWS Elemental software installer could fail, or jobs remain in a pending state, if passthrough isn't enabled.

**To enable CPU passthrough**

1. At the Linux command line on the KVM host, use the following command to update the virtual machine configuration file. 

   ```
   sudo virsh edit hostname
   ```

   where `hostname` is the name that you gave the virtual machine when you deployed it.

1.  Go to the line that defines `cpu mode` and change it to **host-passthrough**. 

1. Save and exit the editor.

1. Enable passthrough on all KVMs that you deployed.