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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7691C4345F for ; Tue, 23 Apr 2024 16:32:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7CB336B013A; Tue, 23 Apr 2024 12:32:21 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 77AE16B013B; Tue, 23 Apr 2024 12:32:21 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5F4176B013C; Tue, 23 Apr 2024 12:32:21 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 3E5C46B013A for ; Tue, 23 Apr 2024 12:32:21 -0400 (EDT) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id AEB69120E01 for ; Tue, 23 Apr 2024 16:32:20 +0000 (UTC) X-FDA: 82041339240.24.F4EA856 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2062.outbound.protection.outlook.com [40.107.93.62]) by imf12.hostedemail.com (Postfix) with ESMTP id A72A04001E for ; Tue, 23 Apr 2024 16:32:17 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=OI9CW0u3; spf=pass (imf12.hostedemail.com: domain of Michael.Roth@amd.com designates 40.107.93.62 as permitted sender) smtp.mailfrom=Michael.Roth@amd.com; dmarc=pass (policy=quarantine) header.from=amd.com; arc=pass ("microsoft.com:s=arcselector9901:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1713889937; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=1/MD3a7C5GLx96Ue1RmzC2OyzAylDOJ09+yC+W99IzQ=; b=okxdppzYixkRE4jl4nm2fNga/pEUBvwybpNo0GUH3NIyXfztDgbs9MQvIuZOljqKi9I9JE o1rxBP6/ukKyzcHVudd/SxIJ78XfqwG0gVJ2PFCz4r18LtxAzoIzxLPnAj1ItZy66ktsGX lN23xAqhHwmDYGsMiCnYNOsY3nUsg74= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1713889937; a=rsa-sha256; cv=pass; b=BIxOqTV74wP/wT9OKTIpta6MYbGxDmH7R9l9E/dHXpD5W3ithKNHPmO2eaK8FUlmw9mSzE oeQ26y52qiMbEe+OfgEvxanbV+ewI7Qy+/j/DIfYNVprXBmHeBff/iPDXmnPIEdkI2uImG QhkJ31bObe9Shr8fGj1t6Z9ys3v0SlY= ARC-Authentication-Results: i=2; imf12.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=OI9CW0u3; spf=pass (imf12.hostedemail.com: domain of Michael.Roth@amd.com designates 40.107.93.62 as permitted sender) smtp.mailfrom=Michael.Roth@amd.com; dmarc=pass (policy=quarantine) header.from=amd.com; arc=pass ("microsoft.com:s=arcselector9901:i=1") ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KsTwHAU4sZ9iBFpISsFpajj+eKbeCiJWRdsAcp5zeW2qeQf8SCW956cyhfMORyInlKdAbWSOw4OV3qVOnZlZOxjBQZsKzfzQp/z/FL106e6PSKEfjTMh+X/kx2/1aByyB1xdUwD8h5ddkdewUmsF3hbDUJlFYDIwxjjUJVY8Zq4uzADswhNIpqiZ6cCs/7B2THubrgGWeGswu5VWjwvUbluaVYARyPBJ7GEMpjsNbCqZTNnpu9zU3Bf7vtkeEFZp0z2rAmWpkr2jZgoDjjEdUDtHA5gA2LHhm3uWB/g+4MxXxgW8remwAZJk/MbtJDlj/luXLevot2sjXrOeG4iT7A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=1/MD3a7C5GLx96Ue1RmzC2OyzAylDOJ09+yC+W99IzQ=; b=RQV11kUIqyTOrvE1zvkYWWCyivab1xVc1uF27CL+bdADOF1xzTIvx1P4vyAkhfqYQyuKbahh5QaK2DOQF2cgpKMfTBoyg1rPaVDGigb4lCcnPlnPgPumTg7c1V4AhGKQ9T7TMxPPpc3vTqPDaSFXTyYscsNSZLiSAf8AgINYjiGQpJVVOS/ICygupeE3G5y4Nsx7XrqL6kZ5pLOjHXwEPikZamVDAD0oSOs5Q5x5AOMyqEBL+IBs0P03eEO4/YSr8xkLiXhts2chWxrAwo5iAcbCNBkQ3C4Oul6V5mmyb+iFD/G908vCu8k+TZOE0Y6GtaTBkVdVxMN/gvmpJb0ktg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.linux.dev smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1/MD3a7C5GLx96Ue1RmzC2OyzAylDOJ09+yC+W99IzQ=; b=OI9CW0u3WRLO3ViA6KvZfJgmF3fOz6R1Lr0nQZDIvZMv3UKowmvIGVUyMiacNppNzcqowKkmYycR+NKuwos2jNXO7E6erIdzjpO9gNBkrmT926vXUDSps1oXyjPehrr+We0QxYR/SJhGkHaFxnbIIZENGnmEcgknRPNLMnyBIf0= Received: from MW4PR03CA0140.namprd03.prod.outlook.com (2603:10b6:303:8c::25) by CH3PR12MB7594.namprd12.prod.outlook.com (2603:10b6:610:140::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7472.44; Tue, 23 Apr 2024 16:32:14 +0000 Received: from CO1PEPF000042A7.namprd03.prod.outlook.com (2603:10b6:303:8c:cafe::27) by MW4PR03CA0140.outlook.office365.com (2603:10b6:303:8c::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7495.34 via Frontend Transport; Tue, 23 Apr 2024 16:32:09 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; 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 CO1PEPF000042A7.mail.protection.outlook.com (10.167.243.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7519.19 via Frontend Transport; Tue, 23 Apr 2024 16:32:09 +0000 Received: from localhost (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 15.1.2507.35; Tue, 23 Apr 2024 11:32:08 -0500 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <20240421180122.1650812-1-michael.roth@amd.com> References: <20240421180122.1650812-1-michael.roth@amd.com> Subject: Re: [PATCH v14 00/22] Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support From: Michael Roth CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , To: Date: Tue, 23 Apr 2024 11:31:53 -0500 Message-ID: <171388991368.1780702.14461882076074410508@amd.com> User-Agent: alot/0.9 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-TrafficTypeDiagnostic: CO1PEPF000042A7:EE_|CH3PR12MB7594:EE_ X-MS-Office365-Filtering-Correlation-Id: 02f30532-0467-4c79-fdf2-08dc63b2ebe6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: =?utf-8?B?OGUrcUhQM2hGSTBoK1B5S24rZkw4VXVGeWZ1ckpmR1BKK0loTURhalpsVGgx?= =?utf-8?B?L2s5NWRxQkthTHd4czYrekgrMkFacnJrc3o4eWxtbUg5MVhNWjBjTkMxdW8x?= =?utf-8?B?ZndaMjFkNzBlN2NGeStJMktRRlp6NWtzb0didUQ5Y3U5VmVrbDZWMmhPWnRF?= =?utf-8?B?cUhUaGprVFZnK0xPNE9jSVpQamVaMEo2T056TFpVVFlHSW0vY0F1Ukd5TzRt?= =?utf-8?B?N1VRNVFpZHpnMmI5ejdHYjVZUktyTm5ZbVVKRUxyeEZvSWNwc2lWZ1BJMGpU?= =?utf-8?B?bTNGamsxV3lKaldHVzBwVjFvbXg4dld1Y3hHM3VndlBsclRCNTZOZTNOb1Zz?= =?utf-8?B?dGlKWVhQRGpnK2h3RmVWbHllNENJWnp1S2t6enRpblk1Rk5KZTJhNHZXRnk3?= =?utf-8?B?U0VyczBhc1ZMSXZxdUtIQkM3SmZLdDRRcmEyZE0wckdCYVNHVXVPNDNwVGdS?= =?utf-8?B?RE1VcWdzMDNCckRFTGl0UE5iS3pyWEVsYnNwZkM5RG50ZUFJUy9ibStUNzYw?= =?utf-8?B?ejZwcG5RRUJGYTBIMjhXemhTOGQ4L0N0cldsYUFzdjMxMldGT2RCcmkyS2FP?= =?utf-8?B?VU41Wmh0Ni9DRjVNWlpLVGV3emRiWWtMTzcxc2UwQ2E4dWFVV2ZXWit3dFl2?= =?utf-8?B?NHdIWTVKVS9oeENvaDhHb1RhZHY3STlia0IxQ0dHNklEcHdmU1JlTDN6K002?= =?utf-8?B?TWw2MFdIRHFzc0JzaUtqaUtOY3hTOUlxTi9qUzhOR1U5M0tUSGpXSjFuMmxO?= =?utf-8?B?SENacHdHT25nMUJJMnVIQVc3VmZGSmg0cWFVWUoxKzVheEdXREdUYVJWU0Qw?= =?utf-8?B?aDdvVDRLV3NhaWVaZEJlVUhWY3h4S20xdDROVGxwelVuNGtod21UZUpCMDh0?= =?utf-8?B?VDRuNnk1RmFSTlJEUW1kclFxSmM5elAxWWhKa1VmdkdidU5FR3Bhd2NyMXUy?= =?utf-8?B?bUFpUFJHS2cvL0pCZzlrTEY1QUxqUnpTbVIxOXN3ZmoyZ1MxZU92NDV6dVR2?= =?utf-8?B?THA5V1c1MUcyaEM1c3RPYTJBdDNRdUxReXFZYnhMekFLa0FZL1R4UkdDQ1dy?= =?utf-8?B?VmU4aTIzbGZMT29yckFpM1hTbmR1RktwaDJEaHRKdWRndE8wTTZYVjhmSmwy?= =?utf-8?B?OW5vMmdVNnZoNXpVbTlZd1FKNmFNWHFmamVlVnAxNzhyZFB0RU4wSzgyK1pk?= =?utf-8?B?WWs5QW1hdTBwYXg2a2UrbHgreDFqdUZFZWtKdXhBMU5BTG9GQjlHQjg0cUJi?= =?utf-8?B?b0kxVDUyUWV1cXdiN3V4R3l2bVg5R2xuMXhqMlZGVE5hMitYSlRkSEtadUxw?= =?utf-8?B?aUNNSXBzdTBOZWlvelRyQVpqMWhvMlg4cFg1SzZYQW53OWVQamw3UWkxTlhR?= =?utf-8?B?TEFWYUQ0UEYrNnFQWlJZSVNIWUFMeDFjVXM2ME1STENWNkh4akNmakZDY0Jy?= =?utf-8?B?THJkelg2dUlaL1FMSURqWUVJUmdtYTgwanhpcyt6bkZld04yL0dNTzN1cGIy?= =?utf-8?B?TUVTY1ZMckxTeEVJU2RhQkFhU1g5K0phNkY2NzAzQmIzUjVNaTFxcGl2dnU2?= =?utf-8?B?OXJkS016YlBWNVlSeUp4d05wZVdTOHVXVlNVRlptTDA1aXhySHZwYmNqR2tD?= =?utf-8?B?Zzd6Z2lETmhIMzdFRnd0SFRxWGdTcm9od2h5RDdsVVBiVVhseHhSeDV5bTNQ?= =?utf-8?B?TEVSUkoxMVI0QWFTa01DclNuUUxXOHpJVmVvY0RQMGxSb2dUektsOUx4TDFo?= =?utf-8?B?REtDNXN1cEJ6dUR5Sm5OWnRFbWV4MG9sME1vc2o4RHFtc3F2T1d3bkYwdHBu?= =?utf-8?B?cW5TVG9UWjlwV2ZGdDJYMm1rb0l6QTNpOUllMHZWNnQ2K1drbGV1SGJwUlJu?= =?utf-8?Q?SygGM+i6Ww5/O?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(376005)(1800799015)(36860700004)(7416005)(82310400014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Apr 2024 16:32:09.1474 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 02f30532-0467-4c79-fdf2-08dc63b2ebe6 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: CO1PEPF000042A7.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7594 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: A72A04001E X-Stat-Signature: ppeww7hokt8fnkkjfesmyi696bm987j8 X-Rspam-User: X-HE-Tag: 1713889937-182140 X-HE-Meta: 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 fD5G9hA7 rWIl5EB6YmKo6MBjIBg8N7VgjCajcdpsKG+EYSPklE+wrl7vTyMKq+f7M4qCNpEWlRpPBkY3A3tzuRcwCcWghhSyrGSyAQ4oIb7xnXleyZLi3vlhC0JPLwhg7xsUtV/Gk7KUDTH8TqWCYiMF+jL4KPGeJTiGmFRdieWPDvuGkCCDgyskzb9srSuvD6/GqtRQSn5BDGOpjdVSm2ziMQGBDLUE13f+kc6qZKo5j3pbL/4/cbLjYnS0GzgOTJ1erDau21FfzO65PhOUKDnijCUq7TQT2PrU9trhSSHZopC+RL8iNI4EGJpDb6qgYIliHcDUwUM2AsebkmYYy8TYRjnStwwCRrgPhtKYpG4eOu7fOjDkvFW6+dbvNvYO8jKgL1DlD2Gzga8jIz+kNmEGMGCMQiXJ/C4IsOLSuzcsD7DvxRBAA0wNRNuSSemX8oKaHmgu957eu X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Quoting Michael Roth (2024-04-21 13:01:00) > This patchset is also available at: >=20 > https://github.com/amdese/linux/commits/snp-host-v14 >=20 > and is based on commit 20cc50a0410f (just before the v13 SNP patches) fro= m: >=20 > https://git.kernel.org/pub/scm/virt/kvm/kvm.git/log/?h=3Dkvm-coco-queue >=20 >=20 > Patch Layout > ------------ >=20 > 01-04: These patches add some basic infrastructure and introduces a new > KVM_X86_SNP_VM vm_type to handle differences verses the existing > KVM_X86_SEV_VM and KVM_X86_SEV_ES_VM types. >=20 > 05-07: These implement the KVM API to handle the creation of a > cryptographic launch context, encrypt/measure the initial image > into guest memory, and finalize it before launching it. >=20 > 08-13: These implement handling for various guest-generated events such > as page state changes, onlining of additional vCPUs, etc. >=20 > 14-17: These implement the gmem hooks needed to prepare gmem-allocated > pages before mapping them into guest private memory ranges as > well as cleaning them up prior to returning them to the host for > use as normal memory. Because this supplants certain activities > like issued WBINVDs during KVM MMU invalidations, there's also > a patch to avoid duplicating that work to avoid unecessary > overhead. >=20 > 18: With all the core support in place, the patch adds a kvm_amd module > parameter to enable SNP support. >=20 > 19-22: These patches all deal with the servicing of guest requests to han= dle > things like attestation, as well as some related host-management > interfaces. I just sent an additional set of fixups, patches 23-29. These add some additional input validation on GHCB requests, mainly ensuring that SNP-specific requests from non-SNP guests result in an error as soon as they are received rather than reaching an error state indirectly further into the call stack. It's a small diff (included below), but a bit of a pain to squash in patch by patch due to close proximity with each other, so I've pushed an updated branch here that already has them squashed in: https://github.com/amdese/linux/commits/snp-host-v14b If preferred I can also resubmit as v15, just let me know. Full diff is below. Thanks! -Mike diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 1cec466e593b..1137a7f4136b 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -3280,6 +3280,8 @@ static int sev_es_validate_vmgexit(struct vcpu_svm *s= vm) goto vmgexit_err; break; case SVM_VMGEXIT_AP_CREATION: + if (!sev_snp_guest(vcpu->kvm)) + goto vmgexit_err; if (lower_32_bits(control->exit_info_1) !=3D SVM_VMGEXIT_AP_DESTROY) if (!kvm_ghcb_rax_is_valid(svm)) goto vmgexit_err; @@ -3289,10 +3291,19 @@ static int sev_es_validate_vmgexit(struct vcpu_svm = *svm) case SVM_VMGEXIT_AP_JUMP_TABLE: case SVM_VMGEXIT_UNSUPPORTED_EVENT: case SVM_VMGEXIT_HV_FEATURES: - case SVM_VMGEXIT_PSC: case SVM_VMGEXIT_TERM_REQUEST: + break; + case SVM_VMGEXIT_PSC: case SVM_VMGEXIT_GUEST_REQUEST: + if (!sev_snp_guest(vcpu->kvm)) + goto vmgexit_err; + break; case SVM_VMGEXIT_EXT_GUEST_REQUEST: + if (!sev_snp_guest(vcpu->kvm)) + goto vmgexit_err; + if (!kvm_ghcb_rax_is_valid(svm) || + !kvm_ghcb_rbx_is_valid(svm)) + goto vmgexit_err; break; default: reason =3D GHCB_ERR_INVALID_EVENT; @@ -3970,6 +3981,9 @@ static int sev_handle_vmgexit_msr_protocol(struct vcp= u_svm *svm) GHCB_MSR_INFO_MASK, GHCB_MSR_INFO_POS); break; case GHCB_MSR_PREF_GPA_REQ: + if (!sev_snp_guest(vcpu->kvm)) + goto out_terminate; + set_ghcb_msr_bits(svm, GHCB_MSR_PREF_GPA_NONE, GHCB_MSR_GPA_VALUE_MASK, GHCB_MSR_GPA_VALUE_POS); set_ghcb_msr_bits(svm, GHCB_MSR_PREF_GPA_RESP, GHCB_MSR_INFO_MASK, @@ -3978,6 +3992,9 @@ static int sev_handle_vmgexit_msr_protocol(struct vcp= u_svm *svm) case GHCB_MSR_REG_GPA_REQ: { u64 gfn; =20 + if (!sev_snp_guest(vcpu->kvm)) + goto out_terminate; + gfn =3D get_ghcb_msr_bits(svm, GHCB_MSR_GPA_VALUE_MASK, GHCB_MSR_GPA_VALUE_POS); =20 @@ -3990,6 +4007,9 @@ static int sev_handle_vmgexit_msr_protocol(struct vcp= u_svm *svm) break; } case GHCB_MSR_PSC_REQ: + if (!sev_snp_guest(vcpu->kvm)) + goto out_terminate; + ret =3D snp_begin_psc_msr(vcpu, control->ghcb_gpa); break; case GHCB_MSR_TERM_REQ: { @@ -4004,12 +4024,7 @@ static int sev_handle_vmgexit_msr_protocol(struct vc= pu_svm *svm) pr_info("SEV-ES guest requested termination: %#llx:%#llx\n", reason_set, reason_code); =20 - vcpu->run->exit_reason =3D KVM_EXIT_SYSTEM_EVENT; - vcpu->run->system_event.type =3D KVM_SYSTEM_EVENT_SEV_TERM; - vcpu->run->system_event.ndata =3D 1; - vcpu->run->system_event.data[0] =3D control->ghcb_gpa; - - return 0; + goto out_terminate; } default: /* Error, keep GHCB MSR value as-is */ @@ -4020,6 +4035,14 @@ static int sev_handle_vmgexit_msr_protocol(struct vc= pu_svm *svm) control->ghcb_gpa, ret); =20 return ret; + +out_terminate: + vcpu->run->exit_reason =3D KVM_EXIT_SYSTEM_EVENT; + vcpu->run->system_event.type =3D KVM_SYSTEM_EVENT_SEV_TERM; + vcpu->run->system_event.ndata =3D 1; + vcpu->run->system_event.data[0] =3D control->ghcb_gpa; + + return 0; } =20 int sev_handle_vmgexit(struct kvm_vcpu *vcpu)