systemd-modules-load.service
/usr/lib/systemd/systemd-modules-load
systemd-modules-load.service is an early boot service that loads kernel modules. It reads static configuration from files in /usr/ and /etc/, but also runtime configuration from /run/ and the kernel command line (see below).
See modules-load.d(5) for information about the configuration format of this service and paths where configuration files can be created.
systemd-modules-load.service understands the following kernel command line parameters:
modules_load=, rd.modules_load=
systemd(1), modules-load.d(5),