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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 1DC39C32771 for ; Wed, 15 Jan 2020 23:30:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E15CA2187F for ; Wed, 15 Jan 2020 23:30:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="mTG9KaL0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730355AbgAOXa4 (ORCPT ); Wed, 15 Jan 2020 18:30:56 -0500 Received: from userp2120.oracle.com ([156.151.31.85]:58846 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726513AbgAOXa4 (ORCPT ); Wed, 15 Jan 2020 18:30:56 -0500 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id 00FNSxPR142024; Wed, 15 Jan 2020 23:30:50 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=content-type : mime-version : subject : from : in-reply-to : date : cc : content-transfer-encoding : message-id : references : to; s=corp-2019-08-05; bh=PYwgNWG/JVTv6hmJUC/N6gPnI4GX4CRWHrwsun68Q2I=; b=mTG9KaL0kOJazjC9C5x4jHEmktdtn7fF2C9GEKP4Z719NTVtDTvzgK7Mp+Gk0KC5z34D tgsZxVi4rocGQ8bldDh8jF+OCC0O41Cnnnmw9p7aAsSzJUg/hVEw8j9B1LYmYt/gEIXW 0EsoRtM+opRbbH82KhD1Aex8xSjdR18l+wjFTMJ2IIF9l5OcrEg7ieCIqMrSUwCRSoN+ +Juv4NJ23zw4vafkAAEQGM7B2ntWzsqRTU+X0oq6C++Cw4IUQZocUszOIAiZ9NT/KUZS 3P+jiVhZvceyKX8oOLxrYttDT89Pzg2u9MvMXB5oy6IhwqCa2jvA5MVSDTkgBOmAPi9e bQ== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by userp2120.oracle.com with ESMTP id 2xf73yqbct-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 15 Jan 2020 23:30:50 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id 00FNSqIW183544; Wed, 15 Jan 2020 23:30:49 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3020.oracle.com with ESMTP id 2xj1arpua3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 15 Jan 2020 23:30:49 +0000 Received: from abhmp0006.oracle.com (abhmp0006.oracle.com [141.146.116.12]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 00FNUlF9011630; Wed, 15 Jan 2020 23:30:48 GMT Received: from [192.168.14.112] (/109.66.225.253) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 15 Jan 2020 15:30:47 -0800 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.1 \(3445.4.7\)) Subject: Re: [PATCH RFC 2/3] x86/kvm/hyper-v: move VMX controls sanitization out of nested_enable_evmcs() From: Liran Alon In-Reply-To: <20200115232738.GB18268@linux.intel.com> Date: Thu, 16 Jan 2020 01:30:43 +0200 Cc: Vitaly Kuznetsov , kvm@vger.kernel.org, Paolo Bonzini , Jim Mattson , linux-kernel@vger.kernel.org, Roman Kagan Content-Transfer-Encoding: quoted-printable Message-Id: References: <20200115171014.56405-1-vkuznets@redhat.com> <20200115171014.56405-3-vkuznets@redhat.com> <20200115232738.GB18268@linux.intel.com> To: Sean Christopherson X-Mailer: Apple Mail (2.3445.4.7) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9501 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=823 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001150177 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9501 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=875 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001150177 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On 16 Jan 2020, at 1:27, Sean Christopherson = wrote: >=20 > On Wed, Jan 15, 2020 at 06:10:13PM +0100, Vitaly Kuznetsov wrote: >> With fine grained VMX feature enablement QEMU>=3D4.2 tries to do = KVM_SET_MSRS >> with default (matching CPU model) values and in case eVMCS is also = enabled, >> fails. >=20 > As in, Qemu is blindly throwing values at KVM and complains on = failure? > That seems like a Qemu bug, especially since Qemu needs to explicitly = do > KVM_CAP_HYPERV_ENLIGHTENED_VMCS to enable eVMCS. See: https://patchwork.kernel.org/patch/11316021/ For more context. -Liran=