Developing Drivers for QNX

Due to its microkernel architecture, driver development in QNX differs significantly from that in Linux. While Linux employs a monolithic kernel, where drivers are typically built and executed in kernel space as loadable modules, QNX uses a microkernel design in which most drivers run in user space as standalone processes. Typically, these drivers are implemented as resource managers and are similar to regular applications. This separation improves system stability and fault tolerance, as a faulty driver cannot crash the kernel or other system components.