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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 19848C43387 for ; Wed, 26 Dec 2018 08:12:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE71421720 for ; Wed, 26 Dec 2018 08:12:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726163AbeLZIMh (ORCPT ); Wed, 26 Dec 2018 03:12:37 -0500 Received: from mga11.intel.com ([192.55.52.93]:64132 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726001AbeLZIMh (ORCPT ); Wed, 26 Dec 2018 03:12:37 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Dec 2018 00:12:37 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,400,1539673200"; d="scan'208";a="104759656" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.239.13.104]) by orsmga008.jf.intel.com with ESMTP; 26 Dec 2018 00:12:35 -0800 From: Yang Weijiang To: pbonzini@redhat.com, rkrcmar@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, mst@redhat.com, yu-cheng.yu@intel.com, yi.z.zhang@intel.com, hjl.tools@gmail.com Cc: Yang Weijiang Subject: [PATCH v1 0/8] This patch-set is to enable kvm Guest OS CET support. Date: Wed, 26 Dec 2018 16:15:24 +0800 Message-Id: <20181226081532.30698-1-weijiang.yang@intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Control-flow Enforcement Technology (CET) provides protection against return/jump-oriented programming (ROP) attacks. To make kvm Guest OS own the capability, this patch-set is required. It enables CET related CPUID report, xsaves/xrstors, vmx entry configuration etc for Guest OS. PATCH 1/3/4: Enable CET support in VMCS. PATCH 2 : Define CR4.CET master enable bit. PATCH 5 : Enable xsave components for CET in XSS. PATCH 6/7/8: Report CET feature support in CPUID. Yang Weijiang (8): kvm:vmx Introduce CET related VMCS field definitions. kvm: Define CR4.CET[bit 23] (master enable bit) for guest OS. kvm:vmx Enable loading CET state bit while guest CR4.CET is being set. kvm:vmx Pass through host CET related MSRs to Guest. kvm:x86 Enable MSR_IA32_XSS bit 11 and 12 for CET xsaves/xrstors. kvm:cpuid Add CPUID support for CET xsaves component query. kvm:cpuid Fix xsaves area size calculation for CPUID.(EAX=0xD,ECX=1). kvm:cpuid Report CET SHSTK and IBT support in CPUID.(EAX=0x7,ECX=0). arch/x86/include/asm/kvm_host.h | 3 ++- arch/x86/include/asm/vmx.h | 8 +++++++ arch/x86/kvm/cpuid.c | 23 +++++++++++++------- arch/x86/kvm/vmx.c | 37 ++++++++++++++++++++++++++++++--- 4 files changed, 60 insertions(+), 11 deletions(-) -- 2.17.1