Silly IRQ allocation on Dell 1950

John Polstra jdp at polstra.com
Thu Nov 2 18:11:22 UTC 2006


On 02-Nov-2006 Jack Vogel wrote:
> On 11/2/06, Scott Long <scottl at samsco.org> wrote:
>> This is typical Dell, and it gets even worse if you have a laptop.
>> Imagine every PCI device being on the sole interrupt line that is routed
>> on the motherboard.  Growing MSI support would get around this for bce
>> and many other devices.
>>
>> Scott
> 
> Well, guess we need stronger fertilizer so it grows faster :)
> 
> Seriously though, MSI implementation is happening. The em driver wants
> it also :)

Yeah, I stuck a dual-port Intel gigabit NIC into one of the PCI-Ex
slots, and it got assigned IRQs 16 and 17.  So that's three gigabit
interfaces on IRQ 16.  I moved the Intel NIC to the other slot, and
it still got assigned the same IRQs.  Wonderful.

John


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