In centos7.6 system, use the lsmod command, found a pile of driver module is loaded in the system, and then, in the/etc/modules - load. D/*. Conf,/run/modules - load. D/*. Conf,/usr/lib/modules - load. D/*. These three directory not found how to drive the conf module configuration file, then in systemd find a "Note that it is usually a better idea to rely on the automatic module loading by PCI IDs, USB IDs, DMI IDs or similar triggers encoded in the kernel modules home more static configuration like this", is the use of PCI ID, it means about USB ID, DMI ID triggering mechanism for the dynamic load automatically, such as
So would like to ask how this mechanism under the specific implementation of???????

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