This optional argument allows a user to pass additional arguments to the kernel. Change-Id: Icbc36ab265e5acf6323fd340c0036c2acd35b3a6 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/49323 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com>