In #231 @steev says:
Potentially related, it would be nice to know what kernel module options are required for this to work properly. I run a custom kernel build on an arm64 laptop and I cannot seem to fully figure out the options to make fakemachine work. I either run into the modules path couldn't be determined, or I run into #196 which means I am missing something else, but I do not know what it might be.
It'd be good to document what kernel options are needed on top of mainline defconfig for fakemachine to work; OR for fakemachine to error out when the required config isn't enabled/found as module.