PRQ 1391 arch/x86/kernel/io_apic_32.c printk(KERN_DEBUG "....... : PRQ implemented: %X\n", reg_01.bits.PRQ); PRQ 1160 arch/x86/kernel/io_apic_64.c printk(KERN_DEBUG "....... : PRQ implemented: %X\n", reg_01.bits.PRQ); PRQ 42 include/asm-x86/io_apic.h PRQ : 1,