From patchwork Fri Jun 5 19:20:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krish Sadhukhan X-Patchwork-Id: 11590439 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5B6FA90 for ; Fri, 5 Jun 2020 19:22:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36FD6207D8 for ; Fri, 5 Jun 2020 19:22:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="jnkFfnFu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727911AbgFETWm (ORCPT ); Fri, 5 Jun 2020 15:22:42 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:40760 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727806AbgFETWl (ORCPT ); Fri, 5 Jun 2020 15:22:41 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 055JGabq071713; Fri, 5 Jun 2020 19:22:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=pgyzLwohL7e4TRlgOmGBRFjn486CICwNIm8iBlwaOLg=; b=jnkFfnFuaU70dmqTL6HH7kDDA19g1zTnKwjAgKUbQSaLFMrmnlFmUrR525RsqnRpKWkg Iti9324n51mJMSUYJCJc+Dp4lv0+BQHyCToL6uojvsB1VHsuwbUBnL8GNoNLvQjoTrcP HcRT2/i+e6FSxOzIy8quwKb3H1W+sOo9TzBvoj89mdvuNpywpyXcOmCS1NZ4DCTLKh+j weCEgdiSaiEjZ/byqgHL8pVGdvKJ0yp4NjVzto9iUiz93ZPevKlkquDeSDp6qDMNKbBg caVATIDWsZftREBLlMgYBE+DpUFPog1TFLZVox6mMuFOqeGKfMNbm2zjcps2wWD9N9Pf jA== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by aserp2120.oracle.com with ESMTP id 31f91dvdxk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 05 Jun 2020 19:22:36 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 055JIApr011935; Fri, 5 Jun 2020 19:20:35 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3020.oracle.com with ESMTP id 31f927mps1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 05 Jun 2020 19:20:35 +0000 Received: from abhmp0009.oracle.com (abhmp0009.oracle.com [141.146.116.15]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 055JKYAj002455; Fri, 5 Jun 2020 19:20:34 GMT Received: from sadhukhan-nvmx.osdevelopmeniad.oraclevcn.com (/100.100.231.182) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 05 Jun 2020 19:20:34 +0000 From: Krish Sadhukhan To: kvm@vger.kernel.org Cc: pbonzini@redhat.com, jmattson@google.com, sean.j.christopherson@intel.com Subject: [PATCH 3/3 v2] kvm-unit-tests: nVMX: Test GUEST_LIMIT_GDTR and GUEST_LIMIT_IDTR on vmentry of nested guests Date: Fri, 5 Jun 2020 19:20:22 +0000 Message-Id: <1591384822-71784-4-git-send-email-krish.sadhukhan@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591384822-71784-1-git-send-email-krish.sadhukhan@oracle.com> References: <1591384822-71784-1-git-send-email-krish.sadhukhan@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9643 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 phishscore=0 mlxlogscore=999 bulkscore=0 suspectscore=13 adultscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006050141 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9643 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 cotscore=-2147483648 malwarescore=0 adultscore=0 priorityscore=1501 suspectscore=13 phishscore=0 spamscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006050141 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org According to section "Checks on Guest Descriptor-Table Registers" in Intel SDM vol 3C, the following checks are performed on the Guest Descriptor-Table Registers on vmentry of nested guests: - Bits 31:16 of each limit field must be 0. Signed-off-by: Krish Sadhukhan --- x86/vmx_tests.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c index 7dd8bfb..d13b34d 100644 --- a/x86/vmx_tests.c +++ b/x86/vmx_tests.c @@ -7834,6 +7834,17 @@ static void vmx_guest_state_area_test(void) test_canonical(GUEST_BASE_GDTR, "GUEST_BASE_GDTR", false); test_canonical(GUEST_BASE_IDTR, "GUEST_BASE_IDTR", false); + u32 guest_desc_limit_saved = vmcs_read(GUEST_LIMIT_GDTR); + TEST_GUEST_VMCS_FIELD_RESERVED_BITS(16, 31, 4, GUEST_LIMIT_GDTR, + "GUEST_LIMIT_GDTR", guest_desc_limit_saved, "GUEST_LIMIT_GDTR", + true); + vmcs_write(GUEST_LIMIT_GDTR, guest_desc_limit_saved); + guest_desc_limit_saved = vmcs_read(GUEST_LIMIT_IDTR); + TEST_GUEST_VMCS_FIELD_RESERVED_BITS(16, 31, 4, GUEST_LIMIT_IDTR, + "GUEST_LIMIT_IDTR", guest_desc_limit_saved, "GUEST_LIMIT_IDTR", + true); + vmcs_write(GUEST_LIMIT_IDTR, guest_desc_limit_saved); + /* * Let the guest finish execution */