From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Date: Thu, 08 May 2014 04:59:53 +0000
Subject: Re: [RFT PATCH -next ] [BUGFIX] kprobes: Fix "Failed to find blacklist" error on ia64 and ppc64
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 <20140507115551.22259.70581.stgit@ltc230.yrl.intra.hitachi.co.jp>
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To: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Tony Luck <tony.luck@gmail.com>, Jeremy Fitzhardinge <jeremy@goop.org>, linux-ia64@vger.kernel.org, sparse@chrisli.org, "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>, linux-tip-commits@vger.kernel.org, anil.s.keshavamurthy@intel.com, Ingo Molnar <mingo@kernel.org>, Fenghua Yu <fenghua.yu@intel.com>, Arnd Bergmann <arnd@arndb.de>, Rusty Russell <rusty@rustcorp.com.au>, Chris Wright <chrisw@sous-sol.org>, yrl.pp-manager.tt@hitachi.com, akataria@vmware.com, Tony Luck <tony.luck@intel.com>, Kevin Hao <haokexin@gmail.com>, linuxppc-dev@lists.ozlabs.org, rdunlap@infradead.org, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, dl9pf@gmx.de, Andrew Morton <akpm@linux-foundation.org>, Linus Torvalds <torvalds@linux-foundation.org>, "David S. Miller" <davem@davemloft.net>

On Wed, May 07, 2014 at 08:55:51PM +0900, Masami Hiramatsu wrote:

...

> +#if defined(CONFIG_PPC64) && (!defined(_CALL_ELF) || _CALL_ELF = 1)
> +/*
> + * On PPC64 ABIv1 the function pointer actually points to the
> + * function's descriptor. The first entry in the descriptor is the
> + * address of the function text.
> + */
> +#define constant_function_entry(fn)	(((func_descr_t *)(fn))->entry)
> +#else
> +#define constant_function_entry(fn)	((unsigned long)(fn))
> +#endif
> +
>  #endif /* __ASSEMBLY__ */

Hi Masami,

You could just use ppc_function_entry() instead.

Ananth