linux-kernel - Re: [PATCH v7 2/7] arm64: introduce interfaces to hotpatch kernel and module code

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Message-ID: <20140106184808.GJ1096@mudshark.cambridge.arm.com>
Date:	Mon, 6 Jan 2014 18:48:09 +0000
From:	Will Deacon <will.deacon@....com>
To:	Jiang Liu <liuj97@...il.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Sandeepa Prabhu <sandeepa.prabhu@...aro.org>,
	AKASHI Takahiro <takahiro.akashi@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 2/7] arm64: introduce interfaces to hotpatch kernel
 and module code

On Sun, Dec 22, 2013 at 03:25:38PM +0000, Jiang Liu wrote:
> Introduce three interfaces to patch kernel and module code:
> aarch64_insn_patch_text_nosync():
> 	patch code without synchronization, it's caller's responsibility
> 	to synchronize all CPUs if needed.
> aarch64_insn_patch_text_sync():
> 	patch code and always synchronize with stop_machine()
> aarch64_insn_patch_text():
> 	patch code and synchronize with stop_machine() if needed
> 
> Signed-off-by: Jiang Liu <liuj97@...il.com>
> ---
>  arch/arm64/include/asm/insn.h |  10 +++-
>  arch/arm64/kernel/insn.c      | 119 ++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 128 insertions(+), 1 deletion(-)

  Reviewed-by: Will Deacon <will.deacon@....com>

Thanks!

Will
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