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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,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 71D53C433E7 for ; Wed, 14 Oct 2020 02:09:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E8E121D7F for ; Wed, 14 Oct 2020 02:09:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728962AbgJNCJr (ORCPT ); Tue, 13 Oct 2020 22:09:47 -0400 Received: from mga06.intel.com ([134.134.136.31]:51139 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725874AbgJNCJq (ORCPT ); Tue, 13 Oct 2020 22:09:46 -0400 IronPort-SDR: uvOTCWmGsaZRZSrvd/jgPNy5wbzXN9FFIdG5TEfp2HnIs1OqMxzJutocORXl1QFy0wLfA3WewE 4r9yuOWB3chg== X-IronPort-AV: E=McAfee;i="6000,8403,9773"; a="227659782" X-IronPort-AV: E=Sophos;i="5.77,373,1596524400"; d="scan'208";a="227659782" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2020 19:09:44 -0700 IronPort-SDR: zNuSmsQyZC58CaJVJlolLCkNbfiDEJ/GctdvvPxHCgsClkX2fjDCVYPdUe+Q+h5m8zRaehjRib 0obiY4OxgG4Q== X-IronPort-AV: E=Sophos;i="5.77,373,1596524400"; d="scan'208";a="530645086" Received: from chenyi-pc.sh.intel.com ([10.239.159.72]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2020 19:09:42 -0700 From: Chenyi Qiang To: Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Xiaoyao Li Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC v2 0/7] KVM: PKS Virtualization support Date: Wed, 14 Oct 2020 10:11:49 +0800 Message-Id: <20201014021157.18022-1-chenyi.qiang@intel.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Protection Keys for Supervisor Pages(PKS) is a feature that extends the Protection Keys architecture to support thread-specific permission restrictions on supervisor pages. PKS works similar to an existing feature named PKU(protecting user pages). They both perform an additional check after all legacy access permissions checks are done. If violated, #PF occurs and PFEC.PK bit will be set. PKS introduces MSR IA32_PKRS to manage supervisor protection key rights. The MSR contains 16 pairs of ADi and WDi bits. Each pair advertises on a group of pages with the same key which is set in the leaf paging-structure entries(bits[62:59]). Currently, IA32_PKRS is not supported by XSAVES architecture. This patchset aims to add the virtualization of PKS in KVM. It implemented PKS CPUID enumeration, vmentry/vmexit configuration, MSR exposure, nested supported etc. Currently, PKS is not yet supported for shadow paging. Detailed information about PKS can be found in the latest Intel 64 and IA-32 Architectures Software Developer's Manual. --- Changelogs: v1->v2: - rebase on the latest PKS kernel support: https://github.com/weiny2/linux-kernel/tree/pks-rfc-v3 - add a kvm-unit-tests for PKS - add the check in kvm_init_msr_list for PKRS - place the X86_CR4_PKS in mmu_role_bits in kvm_set_cr4 - add the support to expose VM_{ENTRY, EXIT}_LOAD_IA32_PKRS in nested VMX MSR - RFC v1: https://lore.kernel.org/lkml/20200807084841.7112-1-chenyi.qiang@intel.com/ --- Chenyi Qiang (7): KVM: VMX: Introduce PKS VMCS fields KVM: VMX: Expose IA32_PKRS MSR KVM: MMU: Rename the pkru to pkr KVM: MMU: Refactor pkr_mask to cache condition KVM: MMU: Add support for PKS emulation KVM: X86: Expose PKS to guest and userspace KVM: VMX: Enable PKS for nested VM arch/x86/include/asm/kvm_host.h | 13 ++--- arch/x86/include/asm/pkeys.h | 1 + arch/x86/include/asm/vmx.h | 6 +++ arch/x86/kvm/cpuid.c | 3 +- arch/x86/kvm/mmu.h | 36 +++++++------ arch/x86/kvm/mmu/mmu.c | 78 +++++++++++++++------------- arch/x86/kvm/vmx/capabilities.h | 6 +++ arch/x86/kvm/vmx/nested.c | 38 +++++++++++++- arch/x86/kvm/vmx/vmcs.h | 1 + arch/x86/kvm/vmx/vmcs12.c | 2 + arch/x86/kvm/vmx/vmcs12.h | 6 ++- arch/x86/kvm/vmx/vmx.c | 91 +++++++++++++++++++++++++++++++-- arch/x86/kvm/vmx/vmx.h | 1 + arch/x86/kvm/x86.c | 9 +++- arch/x86/kvm/x86.h | 6 +++ arch/x86/mm/pkeys.c | 6 +++ include/linux/pkeys.h | 4 ++ 17 files changed, 239 insertions(+), 68 deletions(-) -- 2.17.1