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polarity for a specified IRQ. The intr_config_intr() function wraps this pic method hiding the IRQ to interrupt source lookup. - Add a config_intr() method to the atpic(4) driver that reconfigures the interrupt using the ELCR if possible and returns an error otherwise. - Add a config_intr() method to the apic(4) driver that just logs any requests that would change the existing programming under bootverbose. Currently, the only changes the apic(4) driver receives are due to bugs in the acpi(4) driver and its handling of link devices, hence the reason for such requests currently being ignored. - Have the nexus(4) driver on i386 implement the bus_config_intr() function by calling intr_config_intr().