Re: [PATCH v2 09/19] genirq: Add a new function to get IPI reverse mapping

[Qais Yousef]

On 11/30/2015 11:22 AM, Thomas Gleixner wrote:
> On Mon, 30 Nov 2015, Qais Yousef wrote:
> > On 11/30/2015 10:40 AM, Thomas Gleixner wrote:
> > > On Fri, 27 Nov 2015, Qais Yousef wrote:
> > > > While trying to get my remoteproc driver work with this I uncovered a
> > > > problem
> > > > with this approach.
> > > >
> > > > mips-gic doesn't store the actual hwirq in the irq_data. It uses
> > > > GIC_SHARED_TO_HWIRQ() and GIC_HWIRQ_TO_SHARED() to add and remove an
> > > > offset.
> > > Why can't MIPS store the real hwirq number in irq_data?
> >
> > I'm wary of ending up in inconsistency hell where some functions need to deal
> > with raw hwirq and others with translated ones.
> >
> > I will give this a go first and see if it gets really ugly.
> Well, the question is why can't those functions not all use the raw
> hardware irq. We have it in irq_data exactly to avoid calculations in
> the hot path functions.


I'll see what I can do as part of this series. I think I can fix the new 
IPI and device domains, but can't promise about the root gic domain. It 
might be too big of a change for this series.

Thanks,
Qais
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