From patchwork Wed Feb 19 13:00:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Daniel Kachhap X-Patchwork-Id: 11391395 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2CDC114E3 for ; Wed, 19 Feb 2020 13:02:03 +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 085E62465D for ; Wed, 19 Feb 2020 13:02:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="BBW/dFVz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 085E62465D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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:In-Reply-To: References:List-Owner; bh=ZStNMoo6MXw6H4NuOru/UwDhz8PoY1O8dOMbYJs2WtQ=; b=BBW /dFVzOfIQTVY3HWakg3TcIQgBQVMS0drvfk44uBHxxdZy1fMs0ehJ1Y7t7M/1b4PhmWHi2mCXApXK 4C/ckQcKeBBvrH+WgrQamEaAnOo4LaXSDHZLzPYNtvhQX77P2SJui9mJq18lY/YoTKigPnKlUDuyn AKmOc+hXXSKvrN+UMtf94iIWmF//3sH+luGkvr8yELVtqLg2vCIiV7AWJq6VDOQcblWeLK3jVcyIN M7Z77TLsiDDjWV5uPHpxp4jZq3seDnSUTjJPTEktTL2G/ORafRXR2ihi8uNux4tPZvhcQ4HlYrsjK cly3b8ysG1FKWw4Kt6q5QJk22o5BT7Q==; 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 1j4OzF-00023f-SD; Wed, 19 Feb 2020 13:01:57 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4OyM-0001AS-DZ for linux-arm-kernel@lists.infradead.org; Wed, 19 Feb 2020 13:01:04 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EE7FDFEC; Wed, 19 Feb 2020 05:00:59 -0800 (PST) Received: from a075553-lin.blr.arm.com (a075553-lin.blr.arm.com [10.162.17.32]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A76523F68F; Wed, 19 Feb 2020 05:00:56 -0800 (PST) From: Amit Daniel Kachhap To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/2] arm64: add Armv8.6 pointer authentication Date: Wed, 19 Feb 2020 18:30:38 +0530 Message-Id: <1582117240-15330-1-git-send-email-amit.kachhap@arm.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200219_050102_521080_DBC273B5 X-CRM114-Status: GOOD ( 10.76 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 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 , Kees Cook , Suzuki K Poulose , Catalin Marinas , Kristina Martsenko , Mark Brown , James Morse , Amit Daniel Kachhap , Vincenzo Frascino , Will Deacon , Dave Martin MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Hi all, These patch series adds support for Armv8.6 pointer authentication enhanced mandatory features. These features are, * Enhanced PAC generation algorithm. * Generate fault when authenticate instruction fails. For the first feature no code change is needed and for the second feature a ptrauth fault handler is added. More details can be found here [1]. This series is based on kernel version v5.6-rc2 and on recent in-kernel ptrauth posted patches [2]. Regards, Amit [1]: https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-architecture-developments-armv8-6-a [2]: http://lists.infradead.org/pipermail/linux-arm-kernel/2020-February/711699.html Amit Daniel Kachhap (2): arm64: ptrauth: add pointer authentication Armv8.6 enhanced feature arm64: kprobe: disable probe of fault prone ptrauth instruction arch/arm64/include/asm/esr.h | 4 +++- arch/arm64/include/asm/exception.h | 1 + arch/arm64/include/asm/insn.h | 13 +++++++------ arch/arm64/include/asm/sysreg.h | 24 ++++++++++++++++-------- arch/arm64/kernel/cpufeature.c | 4 ++-- arch/arm64/kernel/entry-common.c | 25 +++++++++++++++++++++++++ arch/arm64/kernel/insn.c | 1 + arch/arm64/kernel/probes/decode-insn.c | 2 +- arch/arm64/kernel/traps.c | 18 ++++++++++++++++++ 9 files changed, 74 insertions(+), 18 deletions(-)