Received: by 2002:a25:683:0:0:0:0:0 with SMTP id 125csp769989ybg; Wed, 10 Jun 2020 13:15:32 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxpC9fkixU4G70uaNAKBnDOF2THlAsUsrpAbyB3MnUQ+jhZ7qYLKpfqzFHhnkTdeG/yFd/L X-Received: by 2002:a50:be8f:: with SMTP id b15mr3886269edk.182.1591820132105; Wed, 10 Jun 2020 13:15:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1591820132; cv=none; d=google.com; s=arc-20160816; b=kuuRiL0YIAPzZACNiJ7CsUK5GF/w+52T88oZUXNOifk04Nw41Mss/zSogr7WSZHwVc YB2XThE5QHu3qJxxezxrSiOzyTQ9wjsinCYBVCBoHh74mW3cqnSKpuHkeWf5EYO5GsKH JHd9YbbPW5Fr69GSYSJUgRTCkeQKstYML341PVkU7djDYibh33g3rFtP3A9CJ0vHA1Xb xUKdApPJ/c1AtU7Uduf8HbyoT2yM2PQa1XCuGrJak/kOP/vfnk8f5UvWpPQndSflC99U MpJN0qtFtKymmlZ+Q8RkSO0yK4qGvdT+LVCfaEJZ+oxg7PrNWe2+dxHctyh61/Xj+mai jG9Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:ironport-sdr:ironport-sdr; bh=pWTaSXt9M0b6EnPStKOAWBPkEfsrZbw73hu1R7HQOvQ=; b=X5lPc5Tjmz46ujX16QPNLuNUogJbBljaF9WQLcsiPpbkCbOv1vbuWOpH6Y5ehG1K4j Wwi9hpndz7CpQgeqH/ZG0v2rQf9CHgYF07OHGnPDFx1wUHnwuR4qjwoWlYxT+lombgXm xop+LlY240VeRpPC379oatCNl4AA77SKAsT3BiAZ/8wlOdIaMF343RQINazGZXWxenMB Ub83i+mYVlOMDWcCVyA4yzWN0MBYHFMS+uAV7CoAh/6YrEPSliWxyR5BCYpoCjGZ8vMr GIg9w2YxKQ/Vt+cVv59akFN/G1D++d+opCQdRK3UZk4UIgC33Lk0EVW2ZcXsziWri4vV K9og== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id cc20si433304edb.108.2020.06.10.13.15.09; Wed, 10 Jun 2020 13:15:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727953AbgFJQ4h (ORCPT + 99 others); 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?