Changelog for kmod-mlx4-4.0-3.el8_2.elrepo.x86_64.rpm :

* Tue Apr 28 2020 Philip J Perry 4.0-3- Rebuilt for RHEL8.2- Source code updated from RHEL kernel-4.18.0-193.el8.x86_64
* Fri Apr 17 2020 Philip J Perry 4.0-2- Fix MLX4_CORE_GEN2 define
* Thu Apr 16 2020 Philip J Perry 4.0-1- Initial el8 build of the kmod package.- Backported from RHEL kernel-4.18.0-147.el8 source [Requested on elreo mailing list]