Re: [RFC 0/4] dynamically allocate arch specific system vectors

Ingo Molnar
2008-09-14T15:49:04Z

* Ingo Molnar <mingo@elte.hu> wrote:

> > There are two kernel modules, sgi-gru and sgi-xp (in drivers/misc),
> > that each need two vectors. And there's the broadcast assist unit
> > (BAU) that is involved in tlb shootdown on uv, which currently uses
> > statically reserved vector 0xf8 (UV_BAU_MESSAGE -- see
> > uv_bau_init()).
>
> while i understand the UV_BAU_MESSAGE case (TLB flushes are special),
> why does sgi-gru and sgi-xp need to go that deep? They are drivers,
> they should be able to make use of an ordinary irq just like the other
> 2000 drivers we have do.

... but all in one, i still like this concept as it's a nice clean-up. I
just dont think it should be exposed to generic drivers, and i think it
needs further fixes and cleanups. (see my previous mails)

Ingo