linux-kernel - Re: [kernel-hardening] [PATCH v8 2/4] GCC plugin infrastructure

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Date:	Wed, 18 May 2016 12:33:27 +0200
From:	Emese Revfy <re.emese@...il.com>
To:	kernel-hardening@...ts.openwall.com
Cc:	Andrew Donnellan <andrew.donnellan@....ibm.com>,
	linux-kbuild@...r.kernel.org, pageexec@...email.hu,
	spender@...ecurity.net, mmarek@...e.com, keescook@...omium.org,
	linux@...musvillemoes.dk, fengguang.wu@...el.com,
	dvyukov@...gle.com, linux-kernel@...r.kernel.org,
	david.brown@...aro.org, yamada.masahiro@...ionext.com,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Daniel Axtens <dja@...ens.net>
Subject: Re: [kernel-hardening] [PATCH v8 2/4] GCC plugin infrastructure

> I've done some basic sanity testing on powerpc with the cyclomatic 
> complexity plugin (with LE native + cross-compilers) and it seems to 
> work with the patch below.
> 
> Signed-off-by: Andrew Donnellan <andrew.donnellan@....ibm.com>
> 
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index a18a0dc..0cfed5b 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -97,6 +97,7 @@ config PPC
>          select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
>          select HAVE_FUNCTION_TRACER
>          select HAVE_FUNCTION_GRAPH_TRACER
> +       select HAVE_GCC_PLUGINS
>          select SYSCTL_EXCEPTION_TRACE
>          select ARCH_WANT_OPTIONAL_GPIOLIB
>          select VIRT_TO_BUS if !PPC64

Hi,

Did you test the plugins with all gcc versions (4.5-6)?

-- 
Emese