From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755901AbaAFSso (ORCPT ); Mon, 6 Jan 2014 13:48:44 -0500 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:35199 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755351AbaAFSsm (ORCPT ); Mon, 6 Jan 2014 13:48:42 -0500 Date: Mon, 6 Jan 2014 18:48:09 +0000 From: Will Deacon To: Jiang Liu Cc: Steven Rostedt , Catalin Marinas , Sandeepa Prabhu , AKASHI Takahiro , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v7 2/7] arm64: introduce interfaces to hotpatch kernel and module code Message-ID: <20140106184808.GJ1096@mudshark.cambridge.arm.com> References: <1387725944-810-1-git-send-email-liuj97@gmail.com> <1387725944-810-3-git-send-email-liuj97@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1387725944-810-3-git-send-email-liuj97@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > --- > arch/arm64/include/asm/insn.h | 10 +++- > arch/arm64/kernel/insn.c | 119 ++++++++++++++++++++++++++++++++++++++++++ > 2 files changed, 128 insertions(+), 1 deletion(-) Reviewed-by: Will Deacon Thanks! Will