I am a little confused over IRQ and vector when it comes to working at the kernel API's.
I want to use vector 0xfa for some interrupt handling which will be generated by a programmable lapic.
I looked at API's such as request_irq and set_intr_gate (also alloc_intr_gate which calls set_intr_gate) for enabling the vector in my IDT table. Are both for the same purpose, or are they totally different? What will be the best way to use it?