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From: "Luck, Tony" <tony.luck@intel.com>
To: Helge Deller <deller@gmx.de>,
        Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
CC: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Michael Ellerman <mpe@ellerman.id.au>
Subject: RE: [PATCH 00/14] Fix wrong %pF and %pS printk format specifier
 usages
Thread-Topic: [PATCH 00/14] Fix wrong %pF and %pS printk format specifier
 usages
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Date: Thu, 7 Sep 2017 16:05:43 +0000
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>> 	if (not_a_function_descriptor(ptr))
>> 		return ptr;
>
> I'm not sure if it's possible on ia64/ppc64/parisc64
> to reliably detect if it's a function descriptor or not.

Agreed. I don't know how to write this test (without changing the compiler to
put the pointers in a separate section ... and then changing the module loader
to keep a list of all these sections).

-Tony