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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 D7843C433E0 for ; Wed, 10 Jun 2020 16:56:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B3CBC2067B for ; Wed, 10 Jun 2020 16:56:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729210AbgFJQ4h (ORCPT ); Wed, 10 Jun 2020 12:56:37 -0400 Received: from mga03.intel.com ([134.134.136.65]:46920 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726560AbgFJQ4g (ORCPT ); Wed, 10 Jun 2020 12:56:36 -0400 IronPort-SDR: hjQWYtaK5OFKhg0sg8vcXUCzzxQTtnaM91n4VUev8qBxo2j8wGKQV+myNTctKrPv77u9mwkJKP 7P9AZ5LkYuUA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jun 2020 09:56:36 -0700 IronPort-SDR: vHN1fkctrzd3E9h6K8v2Zr1SvipXikofTBDthZx/YXQZ1SgFvJE+y9aPZwRkiaCnG4wHhnhArQ tPpvogBhvd6Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,496,1583222400"; d="scan'208";a="260208102" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.152]) by orsmga007.jf.intel.com with ESMTP; 10 Jun 2020 09:56:36 -0700 Date: Wed, 10 Jun 2020 09:56:36 -0700 From: Sean Christopherson To: Yang Weijiang Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, jmattson@google.com, yu.c.zhang@linux.intel.com Subject: Re: [PATCH v12 00/10] Introduce support for guest CET feature Message-ID: <20200610165635.GB18790@linux.intel.com> References: <20200506082110.25441-1-weijiang.yang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200506082110.25441-1-weijiang.yang@intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 06, 2020 at 04:20:59PM +0800, Yang Weijiang wrote: > Several parts in KVM have been updated to provide VM CET support, including: > CPUID/XSAVES config, MSR pass-through, user space MSR access interface, > vmentry/vmexit config, nested VM etc. These patches have dependency on CET > kernel patches for xsaves support and CET definitions, e.g., MSR and related > feature flags. Other than the MSR and cpufeatures flags definitions, is there any direct dependency on kernel CET support? I.e. if/when XSAVES support is merged, is there anything beyond the architectural definitions that are required to merge KVM CET virtualization?