A device driver includes a kernel stub and a user-mode module. The device driver may access device registers while operating in user-mode to promote system stability while providing a low-latency software response from the system upon interrupts. Upon receipt of an interrupt, the kernel stub may run an interrupt service routine and write information to shared memory. Control is passed to the user-mode module by a reflector. The user-mode module may then read the information from the shared memory to continue servicing the interrupt.
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