Disable Intel Alder Lake efficiency cores on Linux

My application requires maximum single-thread performance and suffers from switching to the Intel E cores. I am looking for a way to disable E cores on Intel i9-12900K on my Ubuntu 20.04 machine without access to bios (it is a rented dedicated server). Or for any possible way to distinguish such cores and assign CPU affinities using taskset to exclude them from execution. Tried to find the answer myself in Google. Only found that there are indeed scheduler issues for now, but there is no clear fixes or workarounds available for my problem.