Date: Wed, 9 Mar 2016 02:01:15 -0700 From: David Brown <david.brown@...aro.org> To: Emese Revfy <re.emese@...il.com> Cc: kernel-hardening@...ts.openwall.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 Subject: Re: [PATCH v5 2/5] GCC plugin infrastructure 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@...aro.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 --
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