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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, 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 A7F42C433DF for ; Sat, 23 May 2020 01:07:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 801C8206B6 for ; Sat, 23 May 2020 01:07:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="fgeaX9M4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387494AbgEWBHL (ORCPT ); Fri, 22 May 2020 21:07:11 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:54994 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387475AbgEWBHK (ORCPT ); Fri, 22 May 2020 21:07:10 -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 04N12hvR140755; Sat, 23 May 2020 01:07:06 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 : mime-version : content-transfer-encoding; s=corp-2020-01-29; bh=Gif6rYrgQ7jMQBVu8ERVcS36qGe2iNG99oyOQ8j0sBc=; b=fgeaX9M4vdDHxj31B3gj6z9o6D7pzRuTh8ejXYa4vVbM7qJNPZ+z60hkC1s/rBsUtkk7 2LbmTxiBhm0zXGsMCH8urrGVH+mnK/iDxB5GKhp0x9sZH1nJMTMO6vfqRMnMiusCpn93 IvIejxBb/FQS1XYHirUPqocPgXt6+E4hG6F2Hx0kM9qLeqIQHR6GFrTD99ONwYky11Dl jG9ZRMRRhT9RBIAuSzTK8PqAMeiB16AsIyE0uVhsKlsIxTpYfMS92BU0dGleFOGOT1ih nw0lacjRLNe8L460cfNwyJsufveVIFP8JyrGErEGNV6VklSI/fWzQy372/85z2E6ORy/ ag== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 31284mg7qp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Sat, 23 May 2020 01:07:05 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04N13JVM167319; Sat, 23 May 2020 01:07:05 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserp3020.oracle.com with ESMTP id 312t3g8ac2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 23 May 2020 01:07:05 +0000 Received: from abhmp0006.oracle.com (abhmp0006.oracle.com [141.146.116.12]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 04N1752S006848; Sat, 23 May 2020 01:07:05 GMT Received: from ban25x6uut29.us.oracle.com (/10.153.73.29) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 22 May 2020 18:07:04 -0700 From: Krish Sadhukhan To: kvm@vger.kernel.org Cc: pbonzini@redhat.com, jmattson@google.com, sean.j.christopherson@intel.com Subject: [PATCH 3/3] kvm-unit-tests: nVMX: Test GUEST_LIMIT_GDTR and GUEST_LIMIT_IDTR on vmentry of nested guests Date: Fri, 22 May 2020 20:26:03 -0400 Message-Id: <20200523002603.32450-4-krish.sadhukhan@oracle.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200523002603.32450-1-krish.sadhukhan@oracle.com> References: <20200523002603.32450-1-krish.sadhukhan@oracle.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9629 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 spamscore=0 mlxlogscore=999 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=13 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005230005 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9629 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=13 mlxscore=0 cotscore=-2147483648 impostorscore=0 malwarescore=0 mlxlogscore=999 lowpriorityscore=0 phishscore=0 spamscore=0 bulkscore=0 adultscore=0 priorityscore=1501 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005230005 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 f400408..7b6205d 100644 --- a/x86/vmx_tests.c +++ b/x86/vmx_tests.c @@ -7836,6 +7836,17 @@ static void vmx_guest_state_area_test(void) test_canonical(GUEST_BASE_IDTR, "GUEST_BASE_IDTR", false); #endif + 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 */ -- 1.8.3.1