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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 65A91C4363D for ; Fri, 25 Sep 2020 09:36:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2064222211 for ; Fri, 25 Sep 2020 09:36:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727869AbgIYJgZ (ORCPT ); Fri, 25 Sep 2020 05:36:25 -0400 Received: from foss.arm.com ([217.140.110.172]:40204 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727949AbgIYJgU (ORCPT ); Fri, 25 Sep 2020 05:36:20 -0400 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 EBD5C1045; Fri, 25 Sep 2020 02:36:19 -0700 (PDT) Received: from e112269-lin.arm.com (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 88BF43F718; Fri, 25 Sep 2020 02:36:17 -0700 (PDT) From: Steven Price To: Catalin Marinas , Marc Zyngier , Will Deacon Cc: Steven Price , James Morse , Julien Thierry , Suzuki K Poulose , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Dave Martin , Mark Rutland , Thomas Gleixner , qemu-devel@nongnu.org, Juan Quintela , "Dr. David Alan Gilbert" , Richard Henderson , Peter Maydell , Haibo Xu Subject: [PATCH v3 0/2] MTE support for KVM guest Date: Fri, 25 Sep 2020 10:36:05 +0100 Message-Id: <20200925093607.3051-1-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Version 3 of adding MTE support for KVM guests. See the previous (v2) posting for background: https://lore.kernel.org/r/20200904160018.29481-1-steven.price%40arm.com These patches add support to KVM to enable MTE within a guest. They are based on Catalin's v9 MTE user-space support series[1] (currently in next). Changes since v2: * MTE is no longer a VCPU feature, instead it is a VM cap. * Being a VM cap means easier probing (check for KVM_CAP_ARM_MTE). * The cap must be set before any VCPUs are created, preventing any shenanigans where MTE is enabled for the guest after memory accesses have been performed. [1] https://lore.kernel.org/r/20200904103029.32083-1-catalin.marinas@arm.com Steven Price (2): arm64: kvm: Save/restore MTE registers arm64: kvm: Introduce MTE VCPU feature arch/arm64/include/asm/kvm_emulate.h | 3 +++ arch/arm64/include/asm/kvm_host.h | 7 +++++++ arch/arm64/include/asm/sysreg.h | 3 ++- arch/arm64/kvm/arm.c | 9 +++++++++ arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 14 ++++++++++++++ arch/arm64/kvm/mmu.c | 15 +++++++++++++++ arch/arm64/kvm/sys_regs.c | 20 +++++++++++++++----- include/uapi/linux/kvm.h | 1 + 8 files changed, 66 insertions(+), 6 deletions(-) -- 2.20.1