Re: GPL only modules [was Re: [GIT PATCH] more Driver core patchesfor 2.6.19]

From: Geert Uytterhoeven
Date: Sun Dec 17 2006 - 05:54:41 EST


On Thu, 14 Dec 2006, Jan Engelhardt wrote:
> On Dec 14 2006 14:10, Arjan van de Ven wrote:
> >On Thu, 2006-12-14 at 13:55 +0100, Jan Engelhardt wrote:
> >> >On Thu, 14 Dec 2006 12:31:16 +0100
> >> >Hans-JÃrgen Koch wrote:
> >> >
> >> >You think its any easier to debug because the code now runs in ring 3 but
> >> >accessing I/O space.
> >>
> >> A NULL fault won't oops the system,
> >
> >.. except when the userspace driver crashes as a result and then the hw
> >still crashes the hw (for example via an irq storm or by tying the PCI
> >bus or .. )
>
> hw crashes the hw? Anyway, yes it might happen, the more with non-NULL pointers
> (dangling references f.ex.)
> However, if the userspace part is dead, no one acknowledges the irq, hence an
> irq storm (if not caused by writing bogus stuff into registers) should not
> happen.

Shared level IRQ?

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds