This makes no sense at all.
On Thu, May 14, 2009 at 09:07:56AM -0700, Henry Sieff wrote:
> On Thu, May 14, 2009 at 8:27 AM, Peter Kay - Syllopsium
> <syllops...@syllopsium.com> wrote:
> >> From: "Henry Sieff" <henry.si...@gmail.com>
> >> To: "Joco Salvatti" <salva...@gmail.com>
> >
> >
> >> http://www.openbsd.org/faq/faq12.html
> >>
> >> 12.7.3
> >>
> >> 2009/5/14 Joco Salvatti <salva...@gmail.com>:
> >>>
> >>> Hi,
> >>>
> >>> I would like to know if a different hardware can shared the same IRQ
> >>> with another?
> >
> > 12.7.3 is accurate, however there is a difference between 'can it' 'should
> > it' and 'will it'
> >
> > 'should it?' - yes, it should
> > 'can it?' - yes, it can
> > 'will it?' - that's the tricky one. Some devices just don't share interrupts
> > well. Perhaps it's shit hardware, a shit APIC, crappy BIOS, naff driver -
> > whatever.
> >
> > PCI devices can theoretically share interrupts, but that doesn't necessarily
> > mean they will.
>
> I have only ever had an issue with off-brand NIC's, personally.
>
> But you are of course correct - PCI devices are supposed to be able to
> share IRQ's, but that doesn't mean all manufacturers do interop
> testing to make sure that works.
