From patchwork Wed Jun 2 14:10:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brijesh Singh X-Patchwork-Id: 452661 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER, SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 57A19C47083 for ; Wed, 2 Jun 2021 14:13:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3CD93613F4 for ; Wed, 2 Jun 2021 14:13:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232019AbhFBOPH (ORCPT ); Wed, 2 Jun 2021 10:15:07 -0400 Received: from mail-dm3nam07on2058.outbound.protection.outlook.com ([40.107.95.58]:30496 "EHLO NAM02-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231577AbhFBOOJ (ORCPT ); Wed, 2 Jun 2021 10:14:09 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=IlrsWkbIRI5WR73zbkyQdUSqA1DxyWADxEKiONXPzUikgAZhk10nF3HiaDGI1LfXkVVCaR7yaFIcii+EXsnE7+4HF4RzZyd2cqOibem3rRvXYrqrDr4/DmM26c6BcrzO3UVkJLgnuxbH5Q1RoxcWcatwi9E6KQ4UjHRs6ixwlafx17oIy7T4T2j6cjHyj588njh1u6HpNdloRFd6Zinjw6fBmHe6fJ6BNwiIA7KduXhgtcfx6VDm9FlqLPNEgAC8CytzHJquYSicStgBtfongXnvgqgYdALYbM+tGkPUry7woGdYJ+OoytLg7bGcNhp6ozZsUTpnoXrUWzAdQ/0u/g== 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-SenderADCheck; bh=yCVBTJ4FkMf/LVJ8T6ab3ZBuJBaCUbSHHcaR8JsMZ44=; b=SlHc5CSL2xnizRhyYV3Xit/CamOV6ftEjy6Yyc86WnaZl2yILY43VK9v7TPx0QA/tkJ6frd9dNgJzX9O2SeY1yVzSBBBuMm/EcMaXac0WDUlzCSYHvs0k0F/Y75KmKv7owTxqsX7GFGH2QFXuWZxgc1T7SG9JBHuEaut5mpmUAxe+KjVfP813fzYkH3+L96viTk671+mgX2c/W92PT99Y05GZkMArVqTDi1Ukj0XWL4R3kBt/4cEDRb70n7vDkYFIWYzTPnl1Bm2XNkweysaYOcRqwWpDvaltqC0UykTAoXNGcnxqUi4cINRt1GOgm6VOAmt2cGd46YCB81uH0Fnlw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none 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=yCVBTJ4FkMf/LVJ8T6ab3ZBuJBaCUbSHHcaR8JsMZ44=; b=ZXp6XVQYooibXtonB/puQ/5gJyKtCB3T9+r0671zW37MmVfc412LiBd6IXn5kzipUXTDqI1GurIj7+Je82RnfWISHveq8ila9fsZ22WytsWnWj5jAX0XC9GnvAnNEeErsD02ZGEZGgeDl3eeGLa9cSK0dc6C3MbV7uTtjqUXXS8= Authentication-Results: kernel.org; dkim=none (message not signed) header.d=none; kernel.org; dmarc=none action=none header.from=amd.com; Received: from SN6PR12MB2718.namprd12.prod.outlook.com (2603:10b6:805:6f::22) by SA0PR12MB4495.namprd12.prod.outlook.com (2603:10b6:806:70::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4195.20; Wed, 2 Jun 2021 14:11:45 +0000 Received: from SN6PR12MB2718.namprd12.prod.outlook.com ([fe80::9898:5b48:a062:db94]) by SN6PR12MB2718.namprd12.prod.outlook.com ([fe80::9898:5b48:a062:db94%6]) with mapi id 15.20.4173.030; Wed, 2 Jun 2021 14:11:45 +0000 From: Brijesh Singh To: x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org Cc: Thomas Gleixner , Ingo Molnar , Joerg Roedel , Tom Lendacky , "H. Peter Anvin" , Ard Biesheuvel , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Andy Lutomirski , Dave Hansen , Sergio Lopez , Peter Gonda , Peter Zijlstra , Srinivas Pandruvada , David Rientjes , tony.luck@intel.com, npmccallum@redhat.com, Borislav Petkov , Brijesh Singh Subject: [PATCH Part2 RFC v3 14/37] crypto:ccp: Provide APIs to issue SEV-SNP commands Date: Wed, 2 Jun 2021 09:10:34 -0500 Message-Id: <20210602141057.27107-15-brijesh.singh@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210602141057.27107-1-brijesh.singh@amd.com> References: <20210602141057.27107-1-brijesh.singh@amd.com> X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: SA0PR11CA0056.namprd11.prod.outlook.com (2603:10b6:806:d0::31) To SN6PR12MB2718.namprd12.prod.outlook.com (2603:10b6:805:6f::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from sbrijesh-desktop.amd.com (165.204.77.1) by SA0PR11CA0056.namprd11.prod.outlook.com (2603:10b6:806:d0::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4195.20 via Frontend Transport; Wed, 2 Jun 2021 14:11:44 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 99290dbf-bee0-415c-1b7f-08d925d05aa2 X-MS-TrafficTypeDiagnostic: SA0PR12MB4495: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SN6PR12MB2718.namprd12.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(136003)(376002)(396003)(346002)(366004)(39860400002)(1076003)(54906003)(44832011)(8676002)(2616005)(956004)(478600001)(6486002)(316002)(86362001)(4326008)(7416002)(6666004)(38100700002)(7696005)(38350700002)(52116002)(16526019)(26005)(186003)(2906002)(5660300002)(66946007)(8936002)(36756003)(66556008)(66476007)(134885004); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 99290dbf-bee0-415c-1b7f-08d925d05aa2 X-MS-Exchange-CrossTenant-AuthSource: SN6PR12MB2718.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Jun 2021 14:11:45.5573 (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-CrossTenant-UserPrincipalName: UCMficEVXTd0Zx4QMYOHqU+i3lubG2CbkQ6owAQoXDwa7xTFe2gWmCqArgE1CyZfnilznBi1OKql4LbYKbJBTg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4495 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Provide the APIs for the hypervisor to manage an SEV-SNP guest. The commands for SEV-SNP is defined in the SEV-SNP firmware specification. Signed-off-by: Brijesh Singh --- drivers/crypto/ccp/sev-dev.c | 24 ++++++++++++ include/linux/psp-sev.h | 74 ++++++++++++++++++++++++++++++++++++ 2 files changed, 98 insertions(+) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index b225face37b1..def2996111db 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -1014,6 +1014,30 @@ int sev_guest_df_flush(int *error) } EXPORT_SYMBOL_GPL(sev_guest_df_flush); +int snp_guest_decommission(struct sev_data_snp_decommission *data, int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_DECOMMISSION, data, error); +} +EXPORT_SYMBOL_GPL(snp_guest_decommission); + +int snp_guest_df_flush(int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_DF_FLUSH, NULL, error); +} +EXPORT_SYMBOL_GPL(snp_guest_df_flush); + +int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_PAGE_RECLAIM, data, error); +} +EXPORT_SYMBOL_GPL(snp_guest_page_reclaim); + +int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error) +{ + return sev_do_cmd(SEV_CMD_SNP_DBG_DECRYPT, data, error); +} +EXPORT_SYMBOL_GPL(snp_guest_dbg_decrypt); + static void sev_exit(struct kref *ref) { misc_deregister(&misc_dev->misc); diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 1b53e8782250..63ef766cbd7a 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -860,6 +860,65 @@ int sev_guest_df_flush(int *error); */ int sev_guest_decommission(struct sev_data_decommission *data, int *error); +/** + * snp_guest_df_flush - perform SNP DF_FLUSH command + * + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_df_flush(int *error); + +/** + * snp_guest_decommission - perform SNP_DECOMMISSION command + * + * @decommission: sev_data_decommission structure to be processed + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_decommission(struct sev_data_snp_decommission *data, int *error); + +/** + * snp_guest_page_reclaim - perform SNP_PAGE_RECLAIM command + * + * @decommission: sev_snp_page_reclaim structure to be processed + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error); + +/** + * snp_guest_dbg_decrypt - perform SEV SNP_DBG_DECRYPT command + * + * @sev_ret: sev command return code + * + * Returns: + * 0 if the sev successfully processed the command + * -%ENODEV if the sev device is not available + * -%ENOTSUPP if the sev does not support SEV + * -%ETIMEDOUT if the sev command timed out + * -%EIO if the sev returned a non-zero return code + */ +int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error); + + void *psp_copy_user_blob(u64 uaddr, u32 len); #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ @@ -887,6 +946,21 @@ sev_issue_cmd_external_user(struct file *filep, unsigned int id, void *data, int static inline void *psp_copy_user_blob(u64 __user uaddr, u32 len) { return ERR_PTR(-EINVAL); } +static inline int +snp_guest_decommission(struct sev_data_snp_decommission *data, int *error) { return -ENODEV; } + +static inline int snp_guest_df_flush(int *error) { return -ENODEV; } + +static inline int snp_guest_page_reclaim(struct sev_data_snp_page_reclaim *data, int *error) +{ + return -ENODEV; +} + +static inline int snp_guest_dbg_decrypt(struct sev_data_snp_dbg *data, int *error) +{ + return -ENODEV; +} + #endif /* CONFIG_CRYPTO_DEV_SP_PSP */ #endif /* __PSP_SEV_H__ */