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Subject: Re: [RFC PATCH] Fix Oops in rtas_stop_self()
From: Benjamin Herrenschmidt <benh@au1.ibm.com>
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On Mon, 2014-04-28 at 09:06 +0000, David Laight wrote:
> > Ah, yes, the stack here is obviously at a much higher address than
> 4GB.
> 
> Are we talking of physical or virtual addresses here?
> (or even user?)

Real.

> Is there a re-entrancy problem using kernel static data?

Not for this code. This is called as the last thing a CPU does
before returning to firmware.

Cheers,
Ben.