linux-kernel - Re: [PATCH v5 0/9] ftrace with regs + live patching for ppc64 LE (ABI v2)

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Message-ID: <20160121151213.GB12374@lst.de>
Date:	Thu, 21 Jan 2016 16:12:13 +0100
From:	Torsten Duwe <duwe@....de>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	Petr Mladek <pmladek@...e.com>,
	Denis Kirjanov <kda@...ux-powerpc.org>,
	Jiri Kosina <jikos@...nel.org>, linux-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	live-patching@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v5 0/9] ftrace with regs + live patching for ppc64 LE
	(ABI v2)

On Thu, Jan 21, 2016 at 04:06:33PM +0100, Torsten Duwe wrote:
> mcount call sites looks normal on first sight...

Not quite.
LR is not saved on the stack before the call.
Argh!

Petr, this looks like 12 bytes offset for gcc-6.
I think I can work around the rest.

	Torsten