SceSblSsSmComm

SceSblSsSmComm is a kernel module that is primary responsible for sending F00D commands.

sceSblSmCommStopSmForKernel
This function calls sceSblSmCommCallFuncForKernel with  as   and then calls sceSblSmSchedProxyWaitForKernel.

sceSblSmCommStartSmFromFileForKernel
Priority is binary: 1 = low, 0 = high. Running a high priority SM module while a low priority one is currently running will suspend it.

sceSblSmCommCallFuncForKernel
sm_comm_context is described more here

f00d_resp comes from Request Buffer from offset 0x08

gc_param is generated by game card and has value 0x01

SceSblSsSmComm
This library is present on 1.69 but is not present on 3.60.