dnf --disablerep=* install https://elrepo.org/linux/kernel/el8/x86_64/RPMS/kernel-lt-5.4.288-1.el8.elrepo.x86_64.rpm https://elrepo.org/linux/kernel/el8/x86_64/RPMS/kernel-lt-core-5.4.288-1.el8.elrepo.x86_64.rpm https://elrepo.org/linux/kernel/el8/x86_64/RPMS/kernel-lt-modules-5.4.288-1.el8.elrepo.x86_64.rpm