Questions about IO-APIC
chen.tian at acm.org
Sat Jul 28 02:34:12 CEST 2012
I have some basic questions about IO-APIC. In the boot-up message, I can
IO-APIC[ 0]: pins 23
PIN[ 0m]: vector=20, del=0, dm=physical, dest=0 (high, edge)
PIN[ 1m]: vector=21, del=0, dm=physical, dest=0 (high, edge)
PIN[ 2m]: vector=22, del=0, dm=physical, dest=0 (high, edge)
I understand this info is from IO-APIC redirection table. My question is
what does vector means? Is that the interrupt number CPU is going to see
when an interrupt request is sent from a pin? Or it's an irq number
assigned to an IO-APIC pin?
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the l4-hackers