mainline linux kernel 6.x on rocky9

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
yum -y install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm
yum-config-manager --enable elrepo-kernel elrepo-extras
yum makecache
yum -y install kernel-ml
source /bin/cid-functions; cid_add_line /etc/yum.conf "exclude=kernel-5*"
grubby --default-kernel
reboot