[PATCH v3] powerpc/xics: Work around limitations of OPAL XICS priority handling

[Benjamin Herrenschmidt]

On Mon, 2017-03-06 at 20:36 +1100, Michael Ellerman wrote:
> > According to the HW guys, that should be 5ms in case the powerbus
> > is
> > really really busy.
> 
> Is that a metric or imperial "really really" ?  :D

No idea ;-) Could be the amount of time after which their own timeouts
kick in.

> I'll fold in a change to 5ms, and rebase because it's going to
> stable.

Cheers,
Ben.