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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