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=-6.9 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 autolearn=unavailable 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 C89F5C2BA12 for ; Thu, 2 Apr 2020 18:17:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9EDD520721 for ; Thu, 2 Apr 2020 18:17:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="S6mH9uUI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388381AbgDBSRi (ORCPT ); Thu, 2 Apr 2020 14:17:38 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:60468 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727412AbgDBSRi (ORCPT ); Thu, 2 Apr 2020 14:17:38 -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 032I9cZD150233; Thu, 2 Apr 2020 18:17:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : content-transfer-encoding : in-reply-to; s=corp-2020-01-29; bh=qWI5T/N7iP2w4FARfmbmB5Xd+vJTWKb7aE+P85B2lzk=; b=S6mH9uUICCcIkTsz52Ldr2OvROziVylaQhyM3AzENR09IOZ4pmGrX1PCl0ZMsKL+eUrI UqPYZ9FFiVvHbWW8vi/UwRUYOc8Yov1EZxpyFx1oqnYtRUHzt8hOvGWX0UJMg27gz5M6 To3vbMhttsY2uIx6IA797QhRuVxaP9DR1E7bkXhFV0h3Drv6XTIx3hp5HOW9YBeeLNea OKNCg7gE4BNpyeXtauupY98ZZCudBopcbjUTmpHk9EcXCri7x37YWB0qo+QNbGSOS4EX PBOebfp0RtrpBkqar03d1bNlKmeffds4eB+rY+UbSe5+ECOXaigxEumbp3yRtKQ1e4x8 UA== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 303yunfpc2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 02 Apr 2020 18:17:16 +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 032ID8SM017175; Thu, 2 Apr 2020 18:17:16 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3020.oracle.com with ESMTP id 304sjq6eb4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 02 Apr 2020 18:17:15 +0000 Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 032IHEb9013046; Thu, 2 Apr 2020 18:17:15 GMT Received: from vbusired-dt (/10.154.166.66) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 02 Apr 2020 11:17:14 -0700 Date: Thu, 2 Apr 2020 13:17:10 -0500 From: Venu Busireddy To: Ashish Kalra Cc: pbonzini@redhat.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, joro@8bytes.org, bp@suse.de, thomas.lendacky@amd.com, x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, rientjes@google.com, srutherford@google.com, luto@kernel.org, brijesh.singh@amd.com Subject: Re: [PATCH v6 03/14] KVM: SVM: Add KVM_SEV_SEND_FINISH command Message-ID: <20200402181710.GA655710@vbusired-dt> References: <798316bc964cef34d2760a87de0fb6dc4e5d9af3.1585548051.git.ashish.kalra@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <798316bc964cef34d2760a87de0fb6dc4e5d9af3.1585548051.git.ashish.kalra@amd.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9579 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 adultscore=0 mlxscore=0 malwarescore=0 phishscore=0 suspectscore=1 mlxlogscore=999 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004020140 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9579 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 priorityscore=1501 mlxlogscore=999 bulkscore=0 suspectscore=1 mlxscore=0 spamscore=0 impostorscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004020139 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 2020-03-30 06:20:49 +0000, Ashish Kalra wrote: > From: Brijesh Singh > > 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 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 > Reviewed-by: Steve Rutherford > Signed-off-by: Brijesh Singh > Signed-off-by: Ashish Kalra > --- > .../virt/kvm/amd-memory-encryption.rst | 8 +++++++ > arch/x86/kvm/svm.c | 23 +++++++++++++++++++ > 2 files changed, 31 insertions(+) > > diff --git a/Documentation/virt/kvm/amd-memory-encryption.rst b/Documentation/virt/kvm/amd-memory-encryption.rst > index f46817ef7019..a45dcb5f8687 100644 > --- a/Documentation/virt/kvm/amd-memory-encryption.rst > +++ b/Documentation/virt/kvm/amd-memory-encryption.rst > @@ -314,6 +314,14 @@ Returns: 0 on success, -negative on error > __u32 trans_len; > }; > > +12. KVM_SEV_SEND_FINISH > +------------------------ > + > +After completion of the migration flow, the KVM_SEV_SEND_FINISH command can be > +issued by the hypervisor to delete the encryption context. > + > +Returns: 0 on success, -negative on error Didn't notice this earlier. I would suggest changing all occurrences of "-negative" to either "negative" or "less than 0" in this file. > + > References > ========== > > diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c > index 8561c47cc4f9..71a4cb3b817d 100644 > --- a/arch/x86/kvm/svm.c > +++ b/arch/x86/kvm/svm.c > @@ -7399,6 +7399,26 @@ static int sev_send_update_data(struct kvm *kvm, struct kvm_sev_cmd *argp) > return ret; > } > > +static int sev_send_finish(struct kvm *kvm, struct kvm_sev_cmd *argp) > +{ > + struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info; > + struct sev_data_send_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_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; > @@ -7449,6 +7469,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) > case KVM_SEV_SEND_UPDATE_DATA: > r = sev_send_update_data(kvm, &sev_cmd); > break; > + case KVM_SEV_SEND_FINISH: > + r = sev_send_finish(kvm, &sev_cmd); > + break; > default: > r = -EINVAL; > goto out; > -- > 2.17.1 >