ta transfer interface between the subsystems.
The data transfer daemon communicates with the other
processes in the same subsystem via single. The two data transfer
daemons in different subsystems communicate with each other
via message. Because only one subsystem can use the CPU
resource at any time, i.e., only one kernel is active at the same
time, the two data transfer daemons can’t directly communicate
with each other via message. Therefore, they must use the transit
cache mounted on the shared bus of the sCPU-dBUS to transfer
messages indirectly. The process of inter-subsystem data transfer