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From: David Brown <david.brown@linaro.org>
To: Emese Revfy <re.emese@gmail.com>
Cc: kernel-hardening@lists.openwall.com,
	linux-kbuild@vger.kernel.org, pageexec@freemail.hu,
	spender@grsecurity.net, mmarek@suse.com, keescook@chromium.org,
	linux@rasmusvillemoes.dk, fengguang.wu@intel.com,
	dvyukov@google.com, linux-kernel@vger.kernel.org
Subject: Re: [kernel-hardening] [PATCH v5 2/5] GCC plugin infrastructure
Date: Wed, 9 Mar 2016 02:01:15 -0700	[thread overview]
Message-ID: <20160309090115.GA6964@davidb.org> (raw)
In-Reply-To: <20160307000427.c82f18670568e1e656fc9532@gmail.com>

On Mon, Mar 07, 2016 at 12:04:27AM +0100, Emese Revfy wrote:

>This patch allows to build the whole kernel with GCC plugins. It was ported from
>grsecurity/PaX. The infrastructure supports building out-of-tree modules and
>building in a separate directory. Cross-compilation is supported too but
>currently only the x86 architecture enables plugins.

I've tested this with both ARM and ARM64.  There are some missing
headers in the arm64 gcc, reported here:
https://bugs.linaro.org/show_bug.cgi?id=2123 (also upstream), but this
should work once that is fixed.

Feel free to fold these into your patch, or, if you prefer, I can send
out separate patches for them.

Signed-off-by: David Brown <david.brown@linaro.org>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4f799e5..67ee8e3 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -54,6 +54,7 @@ config ARM
 	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
 	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
 	select HAVE_GENERIC_DMA_COHERENT
+	select HAVE_GCC_PLUGINS
 	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
 	select HAVE_IDE if PCI || ISA || PCMCIA
 	select HAVE_IRQ_TIME_ACCOUNTING
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 8cc6228..6d6e4f8 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -70,6 +70,7 @@ config ARM64
 	select HAVE_FTRACE_MCOUNT_RECORD
 	select HAVE_FUNCTION_TRACER
 	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_GCC_PLUGINS
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_HW_BREAKPOINT if PERF_EVENTS
 	select HAVE_IRQ_TIME_ACCOUNTING
-- 

  reply	other threads:[~2016-03-09  9:01 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-06 23:02 [PATCH v5 0/5] Introduce GCC plugin infrastructure Emese Revfy
2016-03-06 23:02 ` [kernel-hardening] " Emese Revfy
2016-03-06 23:03 ` [PATCH v5 1/5] Shared library support Emese Revfy
2016-03-06 23:03   ` [kernel-hardening] " Emese Revfy
2016-03-07 21:05   ` Kees Cook
2016-03-07 21:05     ` [kernel-hardening] " Kees Cook
2016-03-07 21:05     ` Kees Cook
2016-03-07 21:32     ` Emese Revfy
2016-03-07 21:32       ` [kernel-hardening] " Emese Revfy
2016-03-07 21:32       ` Emese Revfy
2016-03-11  6:19   ` Masahiro Yamada
2016-03-11  6:19     ` [kernel-hardening] " Masahiro Yamada
2016-03-14 20:14     ` Emese Revfy
2016-03-14 20:14       ` [kernel-hardening] " Emese Revfy
2016-03-16  7:50       ` Masahiro Yamada
2016-03-16  7:50         ` [kernel-hardening] " Masahiro Yamada
2016-03-06 23:04 ` [PATCH v5 2/5] GCC plugin infrastructure Emese Revfy
2016-03-06 23:04   ` [kernel-hardening] " Emese Revfy
2016-03-09  9:01   ` David Brown [this message]
2016-03-09 20:50     ` Kees Cook
2016-03-09 20:50       ` Kees Cook
2016-03-09 22:07       ` Emese Revfy
2016-03-09 22:07         ` Emese Revfy
2016-03-09 22:03     ` Emese Revfy
2016-03-11  6:25   ` Masahiro Yamada
2016-03-11  6:25     ` [kernel-hardening] " Masahiro Yamada
2016-03-14 20:52     ` Emese Revfy
2016-03-14 20:52       ` [kernel-hardening] " Emese Revfy
2016-03-16  7:41       ` Masahiro Yamada
2016-03-16  7:41         ` [kernel-hardening] " Masahiro Yamada
2016-03-16 21:06         ` Emese Revfy
2016-03-16 21:06           ` [kernel-hardening] " Emese Revfy
2016-03-14 21:25     ` PaX Team
2016-03-14 21:25       ` [kernel-hardening] " PaX Team
2016-03-16  7:34       ` Masahiro Yamada
2016-03-16  7:34         ` [kernel-hardening] " Masahiro Yamada
2016-03-16 12:49         ` PaX Team
2016-03-16 12:49           ` [kernel-hardening] " PaX Team
2016-03-17  4:09           ` Masahiro Yamada
2016-03-17  4:09             ` [kernel-hardening] " Masahiro Yamada
2016-03-24  0:07     ` Emese Revfy
2016-03-24  0:07       ` [kernel-hardening] " Emese Revfy
2016-03-26  2:39       ` Masahiro Yamada
2016-03-26  2:39         ` [kernel-hardening] " Masahiro Yamada
2016-03-27 21:09         ` Emese Revfy
2016-03-27 21:09           ` [kernel-hardening] " Emese Revfy
2016-04-02  4:32           ` Masahiro Yamada
2016-04-02  4:32             ` [kernel-hardening] " Masahiro Yamada
2016-03-06 23:05 ` [PATCH v5 3/5] Add Cyclomatic complexity GCC plugin Emese Revfy
2016-03-06 23:05   ` [kernel-hardening] " Emese Revfy
2016-03-11  6:26   ` Masahiro Yamada
2016-03-11  6:26     ` [kernel-hardening] " Masahiro Yamada
2016-03-14 21:02     ` Emese Revfy
2016-03-14 21:02       ` [kernel-hardening] " Emese Revfy
2016-03-06 23:06 ` [PATCH v5 4/5] Documentation for the GCC plugin infrastructure Emese Revfy
2016-03-06 23:06   ` [kernel-hardening] " Emese Revfy
2016-03-06 23:07 ` [PATCH v5 5/5] Add sancov plugin Emese Revfy
2016-03-06 23:07   ` [kernel-hardening] " Emese Revfy
2016-03-07 21:07   ` Kees Cook
2016-03-07 21:07     ` [kernel-hardening] " Kees Cook
2016-03-07 21:07     ` Kees Cook
2016-03-07 21:29     ` Emese Revfy
2016-03-07 21:29       ` [kernel-hardening] " Emese Revfy
2016-03-07 21:29       ` Emese Revfy
2016-03-08 10:54     ` Dmitry Vyukov
2016-03-08 10:54       ` [kernel-hardening] " Dmitry Vyukov
2016-03-08 10:54       ` Dmitry Vyukov

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