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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,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 529C1C3A5A9 for ; Mon, 4 May 2020 13:14:50 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1DC7D2071C for ; Mon, 4 May 2020 13:14:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rLSPTqPB"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="MDpvDNdD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1DC7D2071C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.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=+Zenx/9gVVdVFRSrKahjD1oMcVAFLuVd2c9deq5h4og=; b=rLSPTqPBInIBS1 v2t5OLA8WypdS30wsw1reuuCbHbj1VUpCUbH8+pLzreOrHDXHKy1ZSzRUIb7ohcruw965cil5DuWM 7yrT2W7KIdA422kg9h/mhAK5ChLXQ2iBQC2VA/WhGCeGnp4ladif6MgAhziRmSQR6NqRfJNWTFS4a JAGpQ4fxSAMQXsQ/8OrcSuB4tIxNuSAQ8XBO6sYKoR4VXQiU2vf1MPMjUHxnsrv5uRW5R9S5qnWyu yONRw2YS4ImFDSL5TFy+inhU4GoxkorMmcta6AKYxZf1lcBhNmQaQUtxWlptXNla/xdpoGn+ZOT6C 9ZkEeZZ2BpXaCyX966dQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jVavh-0007N5-UY; Mon, 04 May 2020 13:14:42 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jVauq-0006ZE-Cu for linux-arm-kernel@lists.infradead.org; Mon, 04 May 2020 13:13:49 +0000 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7FA9320721; Mon, 4 May 2020 13:13:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588598028; bh=jOqEoNPHdhug9IEbGhnztifeoYjd6oIaNPCOCDZHYcg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MDpvDNdD1uEZQWclw9Mw39WZ4+6EnIpfhP9JmGyBKSd9Swji2c79gQgNb/xuD79ek P8VwjQBrhZegsR7Ik2N/NZLaTbmURXteZn7lt/NPhmKKCyknmQHeY5v9t4eyFQthW4 tRguzPTuMCB0Dc6WeY21aBr6HhAEqod4Hr7cyHB8= From: Mark Brown To: Will Deacon , Catalin Marinas Subject: [PATCH v4 4/4] arm64: insn: Report PAC and BTI instructions as skippable Date: Mon, 4 May 2020 14:13:26 +0100 Message-Id: <20200504131326.18290-5-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200504131326.18290-1-broonie@kernel.org> References: <20200504131326.18290-1-broonie@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200504_061348_465126_52D9ABD7 X-CRM114-Status: UNSURE ( 8.39 ) X-CRM114-Notice: Please train this message. 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: Mark Rutland , Mark Brown , 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+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The PAC and BTI instructions can be safely skipped so report them as such, allowing them to be probed. Signed-off-by: Mark Brown Acked-by: Catalin Marinas --- arch/arm64/kernel/insn.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/kernel/insn.c b/arch/arm64/kernel/insn.c index 15c3f0643e3b..6439af794ec4 100644 --- a/arch/arm64/kernel/insn.c +++ b/arch/arm64/kernel/insn.c @@ -57,6 +57,23 @@ bool __kprobes aarch64_insn_is_steppable_hint(u32 insn) return false; switch (insn & 0xFE0) { + case AARCH64_INSN_HINT_XPACLRI: + case AARCH64_INSN_HINT_PACIA_1716: + case AARCH64_INSN_HINT_PACIB_1716: + case AARCH64_INSN_HINT_AUTIA_1716: + case AARCH64_INSN_HINT_AUTIB_1716: + case AARCH64_INSN_HINT_PACIAZ: + case AARCH64_INSN_HINT_PACIASP: + case AARCH64_INSN_HINT_PACIBZ: + case AARCH64_INSN_HINT_PACIBSP: + case AARCH64_INSN_HINT_AUTIAZ: + case AARCH64_INSN_HINT_AUTIASP: + case AARCH64_INSN_HINT_AUTIBZ: + case AARCH64_INSN_HINT_AUTIBSP: + case AARCH64_INSN_HINT_BTI: + case AARCH64_INSN_HINT_BTIC: + case AARCH64_INSN_HINT_BTIJ: + case AARCH64_INSN_HINT_BTIJC: case AARCH64_INSN_HINT_NOP: return true; default: -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel