oci-kvm-hook man page

oci-kvm-hook

oci-kvm-hook is a OCI hook program. If you add it to the runc json data as a hook, runc will execute the application after the container process is created but before it is executed, with a prestart flag.  When the container starts oci-kvm-hook will make sure that /dev/kvm is available inside the container.

$ docker run -it busybox /bin/sh
$ ls -l /dev/kvm

docker-run(1)