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=-2.4 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 72632C65BAF for ; Wed, 12 Dec 2018 19:35:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A8F820811 for ; Wed, 12 Dec 2018 19:35:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3A8F820811 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-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726955AbeLLTfW (ORCPT ); Wed, 12 Dec 2018 14:35:22 -0500 Received: from foss.arm.com ([217.140.101.70]:47938 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726235AbeLLTfV (ORCPT ); Wed, 12 Dec 2018 14:35:21 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5F7C0A78; Wed, 12 Dec 2018 11:35:21 -0800 (PST) Received: from edgewater-inn.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 2E7BE3F59C; Wed, 12 Dec 2018 11:35:21 -0800 (PST) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id AC0201AE0BDC; Wed, 12 Dec 2018 19:35:44 +0000 (GMT) Date: Wed, 12 Dec 2018 19:35:44 +0000 From: Will Deacon To: Kristina Martsenko Cc: linux-arm-kernel@lists.infradead.org, Adam Wallis , Amit Kachhap , Andrew Jones , Ard Biesheuvel , Catalin Marinas , Christoffer Dall , Cyrill Gorcunov , Dave P Martin , Jacob Bramley , Kees Cook , Marc Zyngier , Mark Rutland , Ramana Radhakrishnan , Richard Henderson , Suzuki K Poulose , kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 00/13] ARMv8.3 pointer authentication userspace support Message-ID: <20181212193544.GB22013@edgewater-inn.cambridge.arm.com> References: <20181207183931.4285-1-kristina.martsenko@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181207183931.4285-1-kristina.martsenko@arm.com> User-Agent: Mutt/1.11.1+30 (d10eec459b35) () Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Kristina, On Fri, Dec 07, 2018 at 06:39:18PM +0000, Kristina Martsenko wrote: > This series adds support for the ARMv8.3 pointer authentication extension, > enabling userspace return address protection with GCC 7 and above. I've pushed this out to for-next/ptr-auth with the following changes: * Rebased onto for-next/core * Dropped the GET/SET ptrace requests for now, due to fragile regset usage * Moved the user key state from thread_info to thread_struct * Removed use of VA_BITS for the PAC mask (doesn't work with 52-bit user VAs) * Added a patch to use _BITUL for the bit definitions in sysreg.h * Tidied up the HWCAP generation [need to run this past Suzuki] * Reduced the number of CPU caps from 6 to 4 [also need to run past Suzuki] * Added Reviewed-by tags I've not merged it into for-next/core yet, because it could use some testing and review first. Cheers, Will