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Subject: Re: [RFC] disable_irq()/enable_irq() semantics and ide-probe.c
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Anton Blanchard <anton@samba.org>,
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On Fri, 2003-10-17 at 11:19, Russell King wrote:
> On Thu, Oct 16, 2003 at 03:14:11AM +1000, Anton Blanchard wrote:
> > >From memory at least x86, alpha, ppc32 and ppc64 worked with Andrey's
> > irq consolidation patches. I'll be pushing for it in 2.7 together with
> > some macros to abstract away irq_desc[NR_IRQS] completely. (it will
> > make it easier to support 24 bit irqs on ppc64 and should allow sparc64
> > to use the consolidated irq code).
> 
> (CC list snipped)
> 
> >From what I heard, benh was seriously considering changing ppc64 IRQ
> stuff in 2.7 to use something like the system we have in ARM.

It's on my list of things to investigate once I've reached OzLabs, indeed.

Right now, I have horrible hacks for the "second" OpenPIC in G5s, and
we are indeed reaching the limits of our current irq model. I don't know
yet what direction I will take though. I'm also considering the possibility
of merging ppc32 and ppc64 archs :)

Ben.