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

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Date:	Wed, 20 Jan 2016 17:03:23 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Petr Mladek <pmladek@...e.com>, Torsten Duwe <duwe@....de>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Denis Kirjanov <kda@...ux-powerpc.org>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	live-patching@...r.kernel.org
Subject: Re: [PATCH v5 0/9] ftrace with regs + live patching for ppc64 LE
 (ABI v2)

On Wed, 2016-01-06 at 15:17 +0100, Petr Mladek wrote:
> On Fri 2015-12-04 15:45:29, Torsten Duwe wrote:
> > Changes since v4:
> >   * change comment style in entry_64.S to C89
> >     (nobody is using assembler syntax comments there).
> >   * the bool function restore_r2 shouldn't return 2,
> >     that's a little confusing.
> >   * Test whether the compiler supports -mprofile-kernel
> >     and only then define CC_USING_MPROFILE_KERNEL
> >   * also make the return value of klp_check_compiler_support
> >     depend on that.
>
> Note that there is still needed the extra patch from
> http://thread.gmane.org/gmane.linux.kernel/2093867/focus=2099603
> to get the livepatching working.

Sorry which extra patch?

> Both ftrace with regs and live patching works for me with this patch
> set and the extra patch. So. for the whole patchset:
>
> Tested-by: Petr Mladek <pmladek@...e.com>

Can you give me some more info on how you're testing it? What config options,
toolchain etc.?

For me the series doesn't even boot, even with livepatching disabled.

cheers