From patchwork Wed Apr 24 16:10:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Brijesh Singh X-Patchwork-Id: 10915095 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5903E13B5 for ; Wed, 24 Apr 2019 16:10:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 488B028A60 for ; Wed, 24 Apr 2019 16:10:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3C7A728AF4; Wed, 24 Apr 2019 16:10:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 796B728A96 for ; Wed, 24 Apr 2019 16:10:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732292AbfDXQKR (ORCPT ); Wed, 24 Apr 2019 12:10:17 -0400 Received: from mail-eopbgr780077.outbound.protection.outlook.com ([40.107.78.77]:3916 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732228AbfDXQKQ (ORCPT ); Wed, 24 Apr 2019 12:10:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector1-amd-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1k3yTLfAOpQNjItVf1n8/kzU5oSESr6IFmtwKbw/m6E=; b=yYBwWvH/g5B/WVRqTIH44Fjof6tVLwyZfJ2WSYmOGbQtNk+tVD9/+FiqDaCR3DpREmMSpU+aQlXaewT0loyPpV/T8RCeK6MjUINarGBj4+UHhec4Xgkgu6AWjQrHxAXzfkidwSoJwwKDSdmu8ni/a5XX4pKYI2lMKSZUGV2xX2w= Received: from DM6PR12MB2682.namprd12.prod.outlook.com (20.176.116.31) by DM6PR12MB2907.namprd12.prod.outlook.com (20.179.71.213) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1835.12; Wed, 24 Apr 2019 16:10:06 +0000 Received: from DM6PR12MB2682.namprd12.prod.outlook.com ([fe80::9183:846f:a93e:9a43]) by DM6PR12MB2682.namprd12.prod.outlook.com ([fe80::9183:846f:a93e:9a43%5]) with mapi id 15.20.1813.017; Wed, 24 Apr 2019 16:10:06 +0000 From: "Singh, Brijesh" To: "kvm@vger.kernel.org" CC: "qemu-devel@nongnu.org" , "Singh, Brijesh" , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= , Joerg Roedel , Borislav Petkov , "Lendacky, Thomas" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" Subject: [RFC PATCH v1 06/10] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command Thread-Topic: [RFC PATCH v1 06/10] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command Thread-Index: AQHU+rguSwzIIWi8mUmY4fmqgtGvcg== Date: Wed, 24 Apr 2019 16:10:06 +0000 Message-ID: <20190424160942.13567-7-brijesh.singh@amd.com> References: <20190424160942.13567-1-brijesh.singh@amd.com> In-Reply-To: <20190424160942.13567-1-brijesh.singh@amd.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SN4PR0601CA0019.namprd06.prod.outlook.com (2603:10b6:803:2f::29) To DM6PR12MB2682.namprd12.prod.outlook.com (2603:10b6:5:4a::31) authentication-results: spf=none (sender IP is ) smtp.mailfrom=brijesh.singh@amd.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [165.204.77.1] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 21039f8e-e4b2-4d53-7dbd-08d6c8cf50f9 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(4618075)(2017052603328)(7193020);SRVR:DM6PR12MB2907; x-ms-traffictypediagnostic: DM6PR12MB2907: x-microsoft-antispam-prvs: x-forefront-prvs: 00179089FD x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(39860400002)(136003)(366004)(396003)(376002)(346002)(189003)(199004)(1730700003)(99286004)(2501003)(73956011)(478600001)(11346002)(6506007)(76176011)(14454004)(6116002)(52116002)(386003)(476003)(25786009)(66946007)(486006)(4326008)(71200400001)(66446008)(66556008)(3846002)(66476007)(64756008)(1076003)(66574012)(71190400001)(446003)(186003)(2616005)(5660300002)(2351001)(102836004)(97736004)(26005)(14444005)(86362001)(6512007)(8676002)(66066001)(8936002)(68736007)(2906002)(50226002)(256004)(81156014)(305945005)(36756003)(316002)(6436002)(54906003)(7736002)(5640700003)(81166006)(53936002)(6916009)(6486002)(7416002);DIR:OUT;SFP:1101;SCL:1;SRVR:DM6PR12MB2907;H:DM6PR12MB2682.namprd12.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: xk2Z7mLFE1GgetoreQhp8F4NVUCgAGNwJFg7290qPKNhwCGDzqvcG0vNERfncz8gTUYHFa5XXpjWqVpqymmJ1oB37r+sdN69bzFJvE4UEEq1e/I6j/xq6VwQpbHCCKj0qoavMzmtsNmD+EeYRYKGklo2S6AWocXSwY1oat8HFMZJ3Bc4GGeFOMyBS+ugqmxYOEM0Vfl6ICEjV+s4OATGShUfaemn3dwY5Nn1oTAFhFHViBgith2CwbRjWYVMrCU1K/BKu5hMEaT/zqkUK8rkggxAE1AnBJqpzaGh4rCa2AOJnzYaiko9PWML9DsbfK5uXgH9lvBsp8u24PPIxEuobA3NuQEFZNBE9zmbK4BBZQg7HEyCxjOIdJ3CVjoyJHtgn/XdHy8hx+dpg8d1H42urLHu30Vm+gdv9Q2CvtqIaX4= Content-ID: <5ADB5861ED3C1840A806F4A75F5166A6@namprd12.prod.outlook.com> MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 21039f8e-e4b2-4d53-7dbd-08d6c8cf50f9 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Apr 2019 16:10:06.4449 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB2907 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The command finalize the guest receiving process and make the SEV guest ready for the execution. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Paolo Bonzini Cc: "Radim Krčmář" Cc: Joerg Roedel Cc: Borislav Petkov Cc: Tom Lendacky Cc: x86@kernel.org Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Brijesh Singh --- .../virtual/kvm/amd-memory-encryption.rst | 8 +++++++ arch/x86/kvm/svm.c | 23 +++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/Documentation/virtual/kvm/amd-memory-encryption.rst b/Documentation/virtual/kvm/amd-memory-encryption.rst index b9c3dc02f344..72c45f93abd7 100644 --- a/Documentation/virtual/kvm/amd-memory-encryption.rst +++ b/Documentation/virtual/kvm/amd-memory-encryption.rst @@ -346,6 +346,14 @@ Returns: 0 on success, -negative on error __u32 trans_len; }; +15. KVM_SEV_RECEIVE_FINISH +------------------------ + +After completion of the migration flow, the KVM_SEV_RECEIVE_FINISH command can be +issued by the hypervisor to make the guest ready for the execution. + +Returns: 0 on success, -negative on error + References ========== diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index c81cac09c5af..74b57ab742ad 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -7350,6 +7350,26 @@ static int sev_receive_update_data(struct kvm *kvm, struct kvm_sev_cmd *argp) return ret; } +static int sev_receive_finish(struct kvm *kvm, struct kvm_sev_cmd *argp) +{ + struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info; + struct sev_data_receive_finish *data; + int ret; + + if (!sev_guest(kvm)) + return -ENOTTY; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->handle = sev->handle; + ret = sev_issue_cmd(kvm, SEV_CMD_RECEIVE_FINISH, data, &argp->error); + + kfree(data); + return ret; +} + static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) { struct kvm_sev_cmd sev_cmd; @@ -7406,6 +7426,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) case KVM_SEV_RECEIVE_UPDATE_DATA: r = sev_receive_update_data(kvm, &sev_cmd); break; + case KVM_SEV_RECEIVE_FINISH: + r = sev_receive_finish(kvm, &sev_cmd); + break; default: r = -EINVAL; goto out;