Re: 3 PCI NIC's on OpenBSD 2.6(x86) sharing IRQ's

[Theo de Raadt <deraadt@cvs.openbsd.org>]

> It isn't the days that were the problem, it is the technology used.
> 
> You CAN NOT share interrupts on the ISA bus.
> Not this today, not fifteen years ago, not the day the IBM PC shipped.
> (I suddenly feel old.)

You can, if you are extremely lucky, and are dealing with a driver
which is written to be completely paranoid about lost interrupts.
Most of ours are not.  Changing some of them to be so, would degrade
performance.  Changing others to do so would bloat them and result in
them not fitting on the boot media, for one.

If you rely on such behaviour, we don't want to hear from you.

> However, you most certainly CAN share interrupts on the PCI bus.

Absolutely.

There are a few issues which we are currently dealing with in the pcibios
code, but that's ... different.