From patchwork Fri May 22 06:29:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Paraschiv, Andra-Irina" X-Patchwork-Id: 11564733 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CB06314B7 for ; Fri, 22 May 2020 06:31:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B4596207FB for ; Fri, 22 May 2020 06:31:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="BMtl+fW3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728322AbgEVGa5 (ORCPT ); Fri, 22 May 2020 02:30:57 -0400 Received: from smtp-fw-2101.amazon.com ([72.21.196.25]:20638 "EHLO smtp-fw-2101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728200AbgEVGa5 (ORCPT ); Fri, 22 May 2020 02:30:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1590129057; x=1621665057; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+IEnUDauVK6Kxis8XNouhki7DlHBWdmNgib7opoIkYo=; b=BMtl+fW3ebTxb1ziSoJCOgjsJoaweb+zvSvWJeKu1BF6SvoNZIIfmcob ck418BtCmyG/x+sjX0tdeQ+ULy3GLx/Yq0qJB8WAgDxIxFpQqrjkNfX/d RaCQWxK1P1Elvg2hiiS8XcQ66FMZdUHQndrGFER2u1Xa5ekkh5AdUSOEx o=; IronPort-SDR: J/nNhtzoSGxgMBoLAiy5oQWC7pMfbpckNL0V81d/xhBAURoPBmKEaAD0R118eiHhh8qQOB17KU 2GSwKoNZgGJw== X-IronPort-AV: E=Sophos;i="5.73,420,1583193600"; d="scan'208";a="31775372" Received: from iad12-co-svc-p1-lb1-vlan2.amazon.com (HELO email-inbound-relay-1d-74cf8b49.us-east-1.amazon.com) ([10.43.8.2]) by smtp-border-fw-out-2101.iad2.amazon.com with ESMTP; 22 May 2020 06:30:45 +0000 Received: from EX13MTAUEA002.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1d-74cf8b49.us-east-1.amazon.com (Postfix) with ESMTPS id C7AC4C0836; Fri, 22 May 2020 06:30:41 +0000 (UTC) Received: from EX13D16EUB003.ant.amazon.com (10.43.166.99) by EX13MTAUEA002.ant.amazon.com (10.43.61.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 06:30:36 +0000 Received: from 38f9d34ed3b1.ant.amazon.com (10.43.161.175) by EX13D16EUB003.ant.amazon.com (10.43.166.99) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 May 2020 06:30:17 +0000 From: Andra Paraschiv To: CC: Anthony Liguori , Benjamin Herrenschmidt , Colm MacCarthaigh , "Bjoern Doebel" , David Woodhouse , "Frank van der Linden" , Alexander Graf , "Martin Pohlack" , Matt Wilson , Paolo Bonzini , Balbir Singh , Stefano Garzarella , Stefan Hajnoczi , Stewart Smith , Uwe Dannowski , , , Andra Paraschiv Subject: [PATCH v2 03/18] nitro_enclaves: Define enclave info for internal bookkeeping Date: Fri, 22 May 2020 09:29:31 +0300 Message-ID: <20200522062946.28973-4-andraprs@amazon.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) In-Reply-To: <20200522062946.28973-1-andraprs@amazon.com> References: <20200522062946.28973-1-andraprs@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.161.175] X-ClientProxiedBy: EX13D20UWC004.ant.amazon.com (10.43.162.41) To EX13D16EUB003.ant.amazon.com (10.43.166.99) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The Nitro Enclaves driver keeps an internal info per each enclave. This is needed to be able to manage enclave resources state, enclave notifications and have a reference of the PCI device that handles command requests for enclave lifetime management. Signed-off-by: Alexandru-Catalin Vasile Signed-off-by: Andra Paraschiv --- drivers/virt/nitro_enclaves/ne_misc_dev.h | 121 ++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 drivers/virt/nitro_enclaves/ne_misc_dev.h diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev.h b/drivers/virt/nitro_enclaves/ne_misc_dev.h new file mode 100644 index 000000000000..9d683607502f --- /dev/null +++ b/drivers/virt/nitro_enclaves/ne_misc_dev.h @@ -0,0 +1,121 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +#ifndef _NE_MISC_DEV_H_ +#define _NE_MISC_DEV_H_ + +#include +#include +#include +#include +#include +#include +#include + +/* Entry in vCPU IDs list. */ +struct ne_vcpu_id { + /* CPU id associated with a given slot, apic id on x86. */ + u32 vcpu_id; + + struct list_head vcpu_id_list_entry; +}; + +/* Entry in memory regions list. */ +struct ne_mem_region { + struct list_head mem_region_list_entry; + + /* Number of pages that make up the memory region. */ + unsigned long nr_pages; + + /* Pages that make up the user space memory region. */ + struct page **pages; +}; + +/* Per-enclave data used for enclave lifetime management. */ +struct ne_enclave { + /** + * CPU pool with siblings of already allocated CPUs to an enclave. + * This is used when a CPU pool is set, to be able to know the CPU + * siblings for the hyperthreading (HT) setup. + */ + cpumask_var_t cpu_siblings; + + struct list_head enclave_list_entry; + + /* Mutex for accessing this internal state. */ + struct mutex enclave_info_mutex; + + /** + * Wait queue used for out-of-band event notifications + * triggered from the PCI device event handler to the enclave + * process via the poll function. + */ + wait_queue_head_t eventq; + + /* Variable used to determine if the out-of-band event was triggered. */ + bool has_event; + + /** + * The maximum number of memory regions that can be handled by the + * lower levels. + */ + u64 max_mem_regions; + + /* Enclave memory regions list. */ + struct list_head mem_regions_list; + + /* Enclave process abstraction mm data struct. */ + struct mm_struct *mm; + + /* Number of memory regions associated with the enclave. */ + u64 nr_mem_regions; + + /* Number of vcpus associated with the enclave. */ + u64 nr_vcpus; + + /* PCI device used for enclave lifetime management. */ + struct pci_dev *pdev; + + /* Slot unique id mapped to the enclave. */ + u64 slot_uid; + + /* Enclave state, updated during enclave lifetime. */ + u16 state; + + /* Enclave vCPUs list. */ + struct list_head vcpu_ids_list; +}; + +/* States available for an enclave. */ +enum ne_state { + /* NE_START_ENCLAVE ioctl was never issued for the enclave. */ + NE_STATE_INIT = 0, + + /** + * NE_START_ENCLAVE ioctl was issued and the enclave is running + * as expected. + */ + NE_STATE_RUNNING = 2, + + /* Enclave exited without userspace interaction. */ + NE_STATE_STOPPED = U16_MAX, +}; + +/* Nitro Enclaves (NE) misc device */ +extern struct miscdevice ne_miscdevice; + +#endif /* _NE_MISC_DEV_H_ */