kernel-rt from Kernel:SLE15-SP4-RT-LTSS project
Sty agraw n unessmres nnek/m
Add repository and install manually
For pool run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Kernel:SLE15-SP4-RT-LTSS/pool/Kernel:SLE15-SP4-RT-LTSS.repo zypper refresh zypper install kernel-rt