From patchwork Thu Apr 18 19:41:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 13635354 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 1C678C4345F for ; Thu, 18 Apr 2024 19:48:22 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id ACACC6B00B8; Thu, 18 Apr 2024 15:48:21 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A50396B00B9; Thu, 18 Apr 2024 15:48:21 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8A3216B00BA; Thu, 18 Apr 2024 15:48:21 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 6473E6B00B8 for ; Thu, 18 Apr 2024 15:48:21 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 1A04AA0C05 for ; Thu, 18 Apr 2024 19:48:21 +0000 (UTC) X-FDA: 82023689202.03.8F183A7 Received: from NAM12-MW2-obe.outbound.protection.outlook.com (mail-mw2nam12on2089.outbound.protection.outlook.com [40.107.244.89]) by imf11.hostedemail.com (Postfix) with ESMTP id 253BF40016 for ; Thu, 18 Apr 2024 19:48:17 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=150sGLdP; spf=pass (imf11.hostedemail.com: domain of Michael.Roth@amd.com designates 40.107.244.89 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=1713469698; 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=BrLx/Gtif4PESh/Cb7f+ZeKvu4HjLI75t/BpaHSyZ/E=; b=aI5oCJujp959AB0001sUWPGQ0YspBDrcrDAYEUJjZ6bzl8WSKCBP6jyWlECNbToUuc1uVR noCW2W+b/bCbwB7d13flO6acfZbYY7ppF9zQcuh+xy3ScfZmC9EPvxi9fwHhppE/9RgTYK By6Fy6w9QZcoP9noj+RNDISGfI813Hs= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1713469698; a=rsa-sha256; cv=pass; b=QY0DQMIoVu24YUYc710jhBSbVPyyLIxw3IFQFIYRtz+Hcyunbx+hPseNzDdQxsLlvEYrem k5ywjwq43B+PNuVxTSwfMcAmmRwXKKiH9CDJjYBVNrR2JjZdoQkexuR/ncCw6OuEPGdYyw vxaAkp28LRcla1u4mPjY8b4NxzMmqg4= ARC-Authentication-Results: i=2; imf11.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=150sGLdP; spf=pass (imf11.hostedemail.com: domain of Michael.Roth@amd.com designates 40.107.244.89 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=gD+WbXrvViLlcWQ5zk524xNAymrGUCYQi/B7Ml9XxbJ6mOvcO7HHRhdb6odIYAVf6qVmJBCJo1SPWaLGgqVFZWxFl0Fl+MKjyyXqzMoiWy5vZPSevwgG/upnWzhtxBOdtBJPeqDkNWNTmr5AZKnzQEubTENUu7VuXvAgEeVwT8gHZqDDAOlODE75c/M0ia4akQaybkeLhUIkzjbvUd4Vk3HuFNTuBN89T81P8sWIxZQZ1xb6d6+csBL3l9qR1jfnJYvXMesB/q7RBtRcCvtDDjYqwfmO6l6u1VmwLBuPJXUrY7PBw+hx7mIY1zNDdwyE+BGp7tKceTjbXO3EBNxwbQ== 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=BrLx/Gtif4PESh/Cb7f+ZeKvu4HjLI75t/BpaHSyZ/E=; b=aH/TCq3wJVRcv4doMYQC0nKh2W2oHnHgtSCxJvA5oic+OT1/OLqtYSvsP6AICsTNTty1+YftAuuOyegbBGLLEvGeMM/mT9RswLg8QCGyjVsEQu3ICMipFevePCsdMTh+yhtBJMuIhPREeOMnwk83o3vBuWsjrmfutC2JZTCMH4Ikee2um3YXLlBfXVTRmpX7IQwK5BvDZyo0/Wobc7yW9e60kBniQEDEwYLpeiJAr0QYAJ7/1BHN/isK3nruu8zKKfMsgIAS7SNbN9ZauqiHwYiBJvlGJhBEoIS6bZ8aGLfzAE7gE30FEXpB+3Ml5zH0i25adJ17w699iyH49bL82A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org 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=BrLx/Gtif4PESh/Cb7f+ZeKvu4HjLI75t/BpaHSyZ/E=; b=150sGLdPv5XFiJDPYI2VZVL8wV9VRibK6Cse/0BgmA2CjqPBbr+bu5Pt7cwYTLf9OyooS4lRr/LvFte3+ABZOhEBOcuwL+xt1iY4eCtlLOsTk4Dpku58KYa0VAu7utAOYRA04e4A0HEtMMnEBquYrrqv24m2F1Yk6arKCruxHZA= Received: from PH7PR17CA0029.namprd17.prod.outlook.com (2603:10b6:510:323::23) by IA0PR12MB9012.namprd12.prod.outlook.com (2603:10b6:208:485::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7452.50; Thu, 18 Apr 2024 19:48:14 +0000 Received: from SN1PEPF0002BA4F.namprd03.prod.outlook.com (2603:10b6:510:323:cafe::2) by PH7PR17CA0029.outlook.office365.com (2603:10b6:510:323::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7495.29 via Frontend Transport; Thu, 18 Apr 2024 19:48:13 +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 SN1PEPF0002BA4F.mail.protection.outlook.com (10.167.242.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7452.22 via Frontend Transport; Thu, 18 Apr 2024 19:48:13 +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; Thu, 18 Apr 2024 14:48:12 -0500 From: Michael Roth To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v13 24/26] crypto: ccp: Add the SNP_VLEK_LOAD command Date: Thu, 18 Apr 2024 14:41:31 -0500 Message-ID: <20240418194133.1452059-25-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240418194133.1452059-1-michael.roth@amd.com> References: <20240418194133.1452059-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002BA4F:EE_|IA0PR12MB9012:EE_ X-MS-Office365-Filtering-Correlation-Id: 825a3000-62c0-4f6a-2102-08dc5fe07c05 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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)(7416005)(36860700004)(1800799015)(376005)(82310400014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Apr 2024 19:48:13.6854 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 825a3000-62c0-4f6a-2102-08dc5fe07c05 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: SN1PEPF0002BA4F.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB9012 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 253BF40016 X-Rspam-User: X-Stat-Signature: kwh9kobbfadirzzm4tag13kbyc3hyjft X-HE-Tag: 1713469697-729772 X-HE-Meta: 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 UFNDF/1t aaMHq5AlQ5kHNUaG6z42dPf/KkK1i9g7aFdLQbMGqKDfHv2/oTPr7dcORHSkD/uOi0eQmUANZmy6JhqNzUAF36REJ92aAcZ40irObcLhtKFopsuME9loQiWeL2CMhavERJsdFI9HSdJgdXkfVSpX1B0w1ocm1Ukd/Jkh2kh7Vu8Ats0hAYJ5utfB/6y3Pwpt1kE7kkJHGjJCbazTqsmmYh017XQII8/fF+YrnqHaiI1lk8eQL+8YHF0FVpHewVxbAt1+ZZ4CCXvO8IRg2zBSg2MvNz+2O1tINu39AFZ3TVZAry8I1Ku/S5vnMLxlQ8FWATW6CZIlAx7G8jZp+3UTSbjmtcw9Jj33mwy19CEQliHuBnhCacGWnQmUwpSIbzSWEzuXb 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: When requesting an attestation report a guest is able to specify whether it wants SNP firmware to sign the report using either a Versioned Chip Endorsement Key (VCEK), which is derived from chip-unique secrets, or a Versioned Loaded Endorsement Key (VLEK) which is obtained from an AMD Key Derivation Service (KDS) and derived from seeds allocated to enrolled cloud service providers (CSPs). For VLEK keys, an SNP_VLEK_LOAD SNP firmware command is used to load them into the system after obtaining them from the KDS. Add a corresponding userspace interface so to allow the loading of VLEK keys into the system. See SEV-SNP Firmware ABI 1.54, SNP_VLEK_LOAD for more details. Reviewed-by: Tom Lendacky Signed-off-by: Michael Roth --- Documentation/virt/coco/sev-guest.rst | 19 ++++++++++++++ drivers/crypto/ccp/sev-dev.c | 36 +++++++++++++++++++++++++++ include/uapi/linux/psp-sev.h | 27 ++++++++++++++++++++ 3 files changed, 82 insertions(+) diff --git a/Documentation/virt/coco/sev-guest.rst b/Documentation/virt/coco/sev-guest.rst index e1eaf6a830ce..de68d3a4b540 100644 --- a/Documentation/virt/coco/sev-guest.rst +++ b/Documentation/virt/coco/sev-guest.rst @@ -176,6 +176,25 @@ to SNP_CONFIG command defined in the SEV-SNP spec. The current values of the firmware parameters affected by this command can be queried via SNP_PLATFORM_STATUS. +2.7 SNP_VLEK_LOAD +----------------- +:Technology: sev-snp +:Type: hypervisor ioctl cmd +:Parameters (in): struct sev_user_data_snp_vlek_load +:Returns (out): 0 on success, -negative on error + +When requesting an attestation report a guest is able to specify whether +it wants SNP firmware to sign the report using either a Versioned Chip +Endorsement Key (VCEK), which is derived from chip-unique secrets, or a +Versioned Loaded Endorsement Key (VLEK) which is obtained from an AMD +Key Derivation Service (KDS) and derived from seeds allocated to +enrolled cloud service providers. + +In the case of VLEK keys, the SNP_VLEK_LOAD SNP command is used to load +them into the system after obtaining them from the KDS, and corresponds +closely to the SNP_VLEK_LOAD firmware command specified in the SEV-SNP +spec. + 3. SEV-SNP CPUID Enforcement ============================ diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 2102377f727b..97a7959406ee 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -2027,6 +2027,39 @@ static int sev_ioctl_do_snp_set_config(struct sev_issue_cmd *argp, bool writable return __sev_do_cmd_locked(SEV_CMD_SNP_CONFIG, &config, &argp->error); } +static int sev_ioctl_do_snp_vlek_load(struct sev_issue_cmd *argp, bool writable) +{ + struct sev_device *sev = psp_master->sev_data; + struct sev_user_data_snp_vlek_load input; + void *blob; + int ret; + + if (!sev->snp_initialized || !argp->data) + return -EINVAL; + + if (!writable) + return -EPERM; + + if (copy_from_user(&input, u64_to_user_ptr(argp->data), sizeof(input))) + return -EFAULT; + + if (input.len != sizeof(input) || input.vlek_wrapped_version != 0) + return -EINVAL; + + blob = psp_copy_user_blob(input.vlek_wrapped_address, + sizeof(struct sev_user_data_snp_wrapped_vlek_hashstick)); + if (IS_ERR(blob)) + return PTR_ERR(blob); + + input.vlek_wrapped_address = __psp_pa(blob); + + ret = __sev_do_cmd_locked(SEV_CMD_SNP_VLEK_LOAD, &input, &argp->error); + + kfree(blob); + + return ret; +} + static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) { void __user *argp = (void __user *)arg; @@ -2087,6 +2120,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) case SNP_SET_CONFIG: ret = sev_ioctl_do_snp_set_config(&input, writable); break; + case SNP_VLEK_LOAD: + ret = sev_ioctl_do_snp_vlek_load(&input, writable); + break; default: ret = -EINVAL; goto out; diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h index b7a2c2ee35b7..2289b7c76c59 100644 --- a/include/uapi/linux/psp-sev.h +++ b/include/uapi/linux/psp-sev.h @@ -31,6 +31,7 @@ enum { SNP_PLATFORM_STATUS, SNP_COMMIT, SNP_SET_CONFIG, + SNP_VLEK_LOAD, SEV_MAX, }; @@ -214,6 +215,32 @@ struct sev_user_data_snp_config { __u8 rsvd1[52]; } __packed; +/** + * struct sev_data_snp_vlek_load - SNP_VLEK_LOAD structure + * + * @len: length of the command buffer read by the PSP + * @vlek_wrapped_version: version of wrapped VLEK hashstick (Must be 0h) + * @rsvd: reserved + * @vlek_wrapped_address: address of a wrapped VLEK hashstick + * (struct sev_user_data_snp_wrapped_vlek_hashstick) + */ +struct sev_user_data_snp_vlek_load { + __u32 len; /* In */ + __u8 vlek_wrapped_version; /* In */ + __u8 rsvd[3]; /* In */ + __u64 vlek_wrapped_address; /* In */ +} __packed; + +/** + * struct sev_user_data_snp_vlek_wrapped_vlek_hashstick - Wrapped VLEK data + * + * @data: Opaque data provided by AMD KDS (as described in SEV-SNP Firmware ABI + * 1.54, SNP_VLEK_LOAD) + */ +struct sev_user_data_snp_wrapped_vlek_hashstick { + __u8 data[432]; /* In */ +} __packed; + /** * struct sev_issue_cmd - SEV ioctl parameters *