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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: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: BIKkIY9oikRrOvddm1UmKYzoOVbPMic2ghADFxW1pKeeIy5neREJ0rK8EE0tFr5PLs3EkhzWxDkzM/Z0ZdV8r9yeJGTnNb2mPijWEgqNanlmLD3R3hdyNNy+0E8W8WEyXydPs1CVjSBJcGCrMMM6MwdOUFywR6zCiMceP8G3m0GGGyO/8ruQYot3CWLpkGl0gjRLqQvh4QljT3ds0tAMVkvBBurwRmGXZ1l1CX+aGY5CUvbx4swYSr9PgCJhdifD+OnSm72TGHWf5y59m45yzFy+TVOx8o5Q4ev1acC0Kfgx/fkBd7hZWVsY0fxnLAciGiNa3B3GHM5TOWBm6YG/yXe7q6A5rNwFwewsN46BbAZsmdOCJgUMryYHhy+Z3XP1lrEEy5p+fyprcTm6J+BBpfZxVpttpRZ1E1DVCA5QuMA= Content-Type: text/plain; charset="utf-8" Content-ID: <6E30D6C83E5FE74AAAFBB44FC32F4EC4@namprd12.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: d889db59-9568-4c94-ab42-08d6c8cf4eb9 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Apr 2019 16:10:02.7982 (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 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 40.107.78.88 Subject: [Qemu-devel] [RFC PATCH v1 03/10] KVM: SVM: Add KVM_SEV_SEND_FINISH command X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Lendacky, Thomas" , "Singh, Brijesh" , =?utf-8?B?UmFkaW0gS3LEjW3DocWZ?= , Joerg Roedel , "x86@kernel.org" , "qemu-devel@nongnu.org" , "linux-kernel@vger.kernel.org" , Ingo Molnar , "H. Peter Anvin" , Paolo Bonzini , Thomas Gleixner , Borislav Petkov Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) The command is used to finailize the encryption context created with KVM_SEV_SEND_START command. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Paolo Bonzini Cc: "Radim Kr=C4=8Dm=C3=A1=C5=99" 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/Document= ation/virtual/kvm/amd-memory-encryption.rst index a0208e171489..006832256ae3 100644 --- a/Documentation/virtual/kvm/amd-memory-encryption.rst +++ b/Documentation/virtual/kvm/amd-memory-encryption.rst @@ -285,6 +285,14 @@ Returns: 0 on success, -negative on error __u32 trans_len; }; =20 +12. KVM_SEV_SEND_FINISH +------------------------ + +After completion of the migration flow, the KVM_SEV_SEND_FINISH command ca= n be +issued by the hypervisor to delete the encryption context. + +Returns: 0 on success, -negative on error + References =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a1cfd36d6195..263f3c7deae7 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -7172,6 +7172,26 @@ static int sev_send_update_data(struct kvm *kvm, str= uct kvm_sev_cmd *argp) return ret; } =20 +static int sev_send_finish(struct kvm *kvm, struct kvm_sev_cmd *argp) +{ + struct kvm_sev_info *sev =3D &to_kvm_svm(kvm)->sev_info; + struct sev_data_send_finish *data; + int ret; + + if (!sev_guest(kvm)) + return -ENOTTY; + + data =3D kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->handle =3D sev->handle; + ret =3D sev_issue_cmd(kvm, SEV_CMD_SEND_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; @@ -7219,6 +7239,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __use= r *argp) case KVM_SEV_SEND_UPDATE_DATA: r =3D sev_send_update_data(kvm, &sev_cmd); break; + case KVM_SEV_SEND_FINISH: + r =3D sev_send_finish(kvm, &sev_cmd); + break; default: r =3D -EINVAL; goto out; --=20 2.17.1