37
Microkernel architecture
nOnly a few essential functions in the
kernel
uprimitive
memory management (address space)
uInterprocess
communication (IPC)
ubasic
scheduling
nOther OS services are provided by processes
running in user mode (servers)
udevice
drivers, file system, virtual memory…
nMore flexibility, extensibility, portability…
nA performance penalty by replacing service calls with message exchanges between process...