From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1FFA7C64E7B for ; Mon, 30 Nov 2020 17:50:21 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 999702074A for ; Mon, 30 Nov 2020 17:50:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="2qRk+JwU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 999702074A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=P6z6dUTB69iO1XX6MsdlwFTYMr6dZL6tN4HsfneLWfo=; b=2qRk+JwUTZDR4NJQpBiyWrwLR uk5uS00LL4TUxn4GL0O2CSMQrAug1YkHIa3ivDOFfd/U5O7OoOFyoJ09Jky8bjvqYpg18+geD3SJc u92aalGvjSnwhYCpEkiHbLiGqGU7B0Pr3z9kaRu9IJlHMnpbfz4B2t2NOR5+6PgVbZnVsTMitQ34o aiUpWzDpsPfJB2BcWcD+UZ0o7gf4/i7MOznXNoH1nmDenB4NyiTfGoJF/TsnmBtroTSKIryf9wkf6 h7AsdaGP/mc3D/yV5LWCykQCAFtOq5XifrSM4w+/RTu9OcWdkTMyEFME/6NmH8r2m8Dl3r3CqFGm1 JWdA75kXA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjnIN-0005Oj-HZ; Mon, 30 Nov 2020 17:49:03 +0000 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjnIF-0005Kd-30 for linux-arm-kernel@lists.infradead.org; Mon, 30 Nov 2020 17:48:57 +0000 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R341e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04400; MF=rongwei.wang@linux.alibaba.com; NM=1; PH=DS; RN=16; SR=0; TI=SMTPD_---0UH3N1OB_1606758525; Received: from localhost.localdomain(mailfrom:rongwei.wang@linux.alibaba.com fp:SMTPD_---0UH3N1OB_1606758525) by smtp.aliyun-inc.com(127.0.0.1); Tue, 01 Dec 2020 01:48:46 +0800 From: Rongwei Wang To: catalin.marinas@arm.com, will@kernel.org, bjorn.andersson@linaro.org, shawnguo@kernel.org Subject: [PATCH 1/3] arm64:insn: Export symbols for MSR ARM driver Date: Tue, 1 Dec 2020 01:48:31 +0800 Message-Id: <20201130174833.41315-2-rongwei.wang@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201130174833.41315-1-rongwei.wang@linux.alibaba.com> References: <20201130174833.41315-1-rongwei.wang@linux.alibaba.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201130_124856_022277_60F88E35 X-CRM114-Status: GOOD ( 11.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gshan@redhat.com, geert+renesas@glider.be, Anson.Huang@nxp.com, masahiroy@kernel.org, michael@walle.cc, krzk@kernel.org, linux-kernel@vger.kernel.org, vkoul@kernel.org, olof@lixom.net, vincenzo.frascino@arm.com, ardb@kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In order to use the MSR-ARM driver in module and built-in ways, we need export following symbols. The MSR-ARM driver depends on function aarch64_insn_patch_text to modify the text at runtime, and function aarch64_insn_read to read one instruction in the specified address. In addition, we need register_undef_hook and unregister_undef_hook to handle the low probability undefined exception which triggered only by MSR-ARM driver. Signed-off-by: Rongwei Wang --- arch/arm64/kernel/insn.c | 2 ++ arch/arm64/kernel/traps.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index 6c0de2f..67a1f78 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -135,6 +135,7 @@ int __kprobes aarch64_insn_read(void *addr, u32 *insnp) return ret; } +EXPORT_SYMBOL(aarch64_insn_read); static int __kprobes __aarch64_insn_write(void *addr, __le32 insn) { @@ -247,6 +248,7 @@ int __kprobes aarch64_insn_patch_text(void *addrs[], u32 insns[], int cnt) return stop_machine_cpuslocked(aarch64_insn_patch_text_cb, &patch, cpu_online_mask); } +EXPORT_SYMBOL(aarch64_insn_patch_text); static int __kprobes aarch64_get_imm_shift_mask(enum aarch64_insn_imm_type type, u32 *maskp, int *shiftp) diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 8af4e0e..c76efa5 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -292,6 +292,7 @@ void register_undef_hook(struct undef_hook *hook) list_add(&hook->node, &undef_hook); raw_spin_unlock_irqrestore(&undef_lock, flags); } +EXPORT_SYMBOL(register_undef_hook); void unregister_undef_hook(struct undef_hook *hook) { @@ -301,6 +302,7 @@ void unregister_undef_hook(struct undef_hook *hook) list_del(&hook->node); raw_spin_unlock_irqrestore(&undef_lock, flags); } +EXPORT_SYMBOL(unregister_undef_hook); static int call_undef_hook(struct pt_regs *regs) { -- 1.8.3.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel