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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT024.mail.protection.outlook.com (10.13.177.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5525.11 via Frontend Transport; Wed, 10 Aug 2022 06:17:10 +0000 Received: from BLR-5CG113396M.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Wed, 10 Aug 2022 01:17:02 -0500 From: Santosh Shukla To: Paolo Bonzini CC: Sean Christopherson , Vitaly Kuznetsov , Jim Mattson , Joerg Roedel , Tom Lendacky , , , , Subject: [PATCHv3 7/8] KVM: nSVM: emulate VMEXIT_INVALID case for nested VNMI Date: Wed, 10 Aug 2022 11:42:25 +0530 Message-ID: <20220810061226.1286-8-santosh.shukla@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220810061226.1286-1-santosh.shukla@amd.com> References: <20220810061226.1286-1-santosh.shukla@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0275ab3e-de7d-45df-4991-08da7a97f5c4 X-MS-TrafficTypeDiagnostic: PH8PR12MB6794:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Aug 2022 06:17:10.7653 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0275ab3e-de7d-45df-4991-08da7a97f5c4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT024.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6794 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If NMI virtualization enabled and NMI_INTERCEPT is unset then next vm entry will exit with #INVALID exit reason. In order to emulate above (VMEXIT(#INVALID)) scenario for nested environment, extending check for V_NMI_ENABLE, NMI_INTERCEPT bit in func __nested_vmcb_check_controls. Signed-off-by: Santosh Shukla --- arch/x86/kvm/svm/nested.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 3d986ec83147..9d031fadcd67 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -296,6 +296,11 @@ static bool __nested_vmcb_check_controls(struct kvm_vcpu *vcpu, if (CC(!nested_svm_check_tlb_ctl(vcpu, control->tlb_ctl))) return false; + if (CC((control->int_ctl & V_NMI_ENABLE) && + !vmcb12_is_intercept(control, INTERCEPT_NMI))) { + return false; + } + return true; } -- 2.25.1