I'm not a software engineer, but I recall that in the days before abstraction layers there was a tactic called a vectored interrupt. When some device needed att

I'm not a software engineer, but I recall that in the days before abstraction layers there was a tactic called a vectored interrupt. When some device needed attention, it tapped the CPU on the shoulder and got it. I don't understand why nowadays with 4- or more core machines, servicing an interrupt isn't easier. I'm naive enough to think that sounds like an architecture problem.