Disabling CPU MSRs is OK in VMs (where it probably does nothing except getting rid of a kernel module) but problematic on the host in context of a host running Kicksecure or Whonix-Host.
It breaks CPU temperature control. A high(er) than expected CPU temperature might wear down the CPU more quickly. Also spend more energy than expected (this might be more important in large scale deployments such as servers farms).
sudo apt install linux-cpupower sudo cpupower frequency-set --governor powersave
modprobe: ERROR: …/libkmod/libkmod-module.c:979 command_do() Error running install command for msr
modprobe: ERROR: could not insert ‘msr’: Operation not permitted
security-misc issue. Requires removal of
install msr /bin/false
Might also break https://packages.debian.org/buster/thermald
This was originally introduced because of this: