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=-14.3 required=3.0 tests=BAYES_00,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, USER_AGENT_GIT autolearn=ham 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 C408AC43463 for ; Mon, 21 Sep 2020 12:18:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8337D2151B for ; Mon, 21 Sep 2020 12:18:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="i1xWBJDK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726954AbgIUMSd (ORCPT ); Mon, 21 Sep 2020 08:18:33 -0400 Received: from smtp-fw-33001.amazon.com ([207.171.190.10]:6513 "EHLO smtp-fw-33001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726756AbgIUMSd (ORCPT ); Mon, 21 Sep 2020 08:18:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1600690712; x=1632226712; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=pKTN/iaxRvbpIa/9sjPSM6v3Fu7sjctYW6qKGYIvSlY=; b=i1xWBJDKy57oIcYNSc0ZN5KtFRwwQQWKsbsJNVaUkmOdjmpXVU8A9phU rZFktK0YnIsiOHeiSnpUCB+/u8Cn4ysscm6Cn66Rntm3i3u0Eu9V4VLYx Ddph85FW5fj1vwN2bVc5n0VWPgyZSwXag4XkRWnqcI8TIoUvhdFrJvjya A=; X-IronPort-AV: E=Sophos;i="5.77,286,1596499200"; d="scan'208";a="76696935" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1e-27fb8269.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP; 21 Sep 2020 12:18:29 +0000 Received: from EX13D16EUB001.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan2.iad.amazon.com [10.40.163.34]) by email-inbound-relay-1e-27fb8269.us-east-1.amazon.com (Postfix) with ESMTPS id DC5CFA1CCA; Mon, 21 Sep 2020 12:18:26 +0000 (UTC) Received: from 38f9d34ed3b1.ant.amazon.com (10.43.160.229) by EX13D16EUB001.ant.amazon.com (10.43.166.28) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 21 Sep 2020 12:18:16 +0000 From: Andra Paraschiv To: linux-kernel CC: Anthony Liguori , Benjamin Herrenschmidt , Colm MacCarthaigh , "David Duncan" , Bjoern Doebel , "David Woodhouse" , Frank van der Linden , Alexander Graf , Greg KH , "Karen Noel" , Martin Pohlack , Matt Wilson , Paolo Bonzini , Stefano Garzarella , Stefan Hajnoczi , Stewart Smith , Uwe Dannowski , Vitaly Kuznetsov , kvm , ne-devel-upstream , Andra Paraschiv Subject: [PATCH v10 03/18] nitro_enclaves: Define enclave info for internal bookkeeping Date: Mon, 21 Sep 2020 15:17:17 +0300 Message-ID: <20200921121732.44291-4-andraprs@amazon.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) In-Reply-To: <20200921121732.44291-1-andraprs@amazon.com> References: <20200921121732.44291-1-andraprs@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.160.229] X-ClientProxiedBy: EX13D36UWB001.ant.amazon.com (10.43.161.84) To EX13D16EUB001.ant.amazon.com (10.43.166.28) Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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. Changelog v9 -> v10 * Update commit message to include the changelog before the SoB tag(s). v8 -> v9 * Add data structure to keep references to both Nitro Enclaves misc and PCI devices. v7 -> v8 * No changes. v6 -> v7 * Update the naming and add more comments to make more clear the logic of handling full CPU cores and dedicating them to the enclave. v5 -> v6 * Update documentation to kernel-doc format. * Include in the enclave memory region data structure the user space address and size for duplicate user space memory regions checks. v4 -> v5 * Include enclave cores field in the enclave metadata. * Update the vCPU ids data structure to be a cpumask instead of a list. v3 -> v4 * Add NUMA node field for an enclave metadata as the enclave memory and CPUs need to be from the same NUMA node. v2 -> v3 * Remove the GPL additional wording as SPDX-License-Identifier is already in place. v1 -> v2 * Add enclave memory regions and vcpus count for enclave bookkeeping. * Update ne_state comments to reflect NE_START_ENCLAVE ioctl naming update. Signed-off-by: Alexandru-Catalin Vasile Signed-off-by: Andra Paraschiv Reviewed-by: Alexander Graf --- drivers/virt/nitro_enclaves/ne_misc_dev.h | 109 ++++++++++++++++++++++ 1 file changed, 109 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..2a4d2224baba --- /dev/null +++ b/drivers/virt/nitro_enclaves/ne_misc_dev.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. + */ + +#ifndef _NE_MISC_DEV_H_ +#define _NE_MISC_DEV_H_ + +#include +#include +#include +#include +#include +#include +#include + +#include "ne_pci_dev.h" + +/** + * struct ne_mem_region - Entry in the enclave user space memory regions list. + * @mem_region_list_entry: Entry in the list of enclave memory regions. + * @memory_size: Size of the user space memory region. + * @nr_pages: Number of pages that make up the memory region. + * @pages: Pages that make up the user space memory region. + * @userspace_addr: User space address of the memory region. + */ +struct ne_mem_region { + struct list_head mem_region_list_entry; + u64 memory_size; + unsigned long nr_pages; + struct page **pages; + u64 userspace_addr; +}; + +/** + * struct ne_enclave - Per-enclave data used for enclave lifetime management. + * @enclave_info_mutex : Mutex for accessing this internal state. + * @enclave_list_entry : Entry in the list of created enclaves. + * @eventq: Wait queue used for out-of-band event notifications + * triggered from the PCI device event handler to + * the enclave process via the poll function. + * @has_event: Variable used to determine if the out-of-band event + * was triggered. + * @max_mem_regions: The maximum number of memory regions that can be + * handled by the hypervisor. + * @mem_regions_list: Enclave user space memory regions list. + * @mem_size: Enclave memory size. + * @mm : Enclave process abstraction mm data struct. + * @nr_mem_regions: Number of memory regions associated with the enclave. + * @nr_parent_vm_cores : The size of the threads per core array. The + * total number of CPU cores available on the + * parent / primary VM. + * @nr_threads_per_core: The number of threads that a full CPU core has. + * @nr_vcpus: Number of vcpus associated with the enclave. + * @numa_node: NUMA node of the enclave memory and CPUs. + * @slot_uid: Slot unique id mapped to the enclave. + * @state: Enclave state, updated during enclave lifetime. + * @threads_per_core: Enclave full CPU cores array, indexed by core id, + * consisting of cpumasks with all their threads. + * Full CPU cores are taken from the NE CPU pool + * and are available to the enclave. + * @vcpu_ids: Cpumask of the vCPUs that are set for the enclave. + */ +struct ne_enclave { + struct mutex enclave_info_mutex; + struct list_head enclave_list_entry; + wait_queue_head_t eventq; + bool has_event; + u64 max_mem_regions; + struct list_head mem_regions_list; + u64 mem_size; + struct mm_struct *mm; + unsigned int nr_mem_regions; + unsigned int nr_parent_vm_cores; + unsigned int nr_threads_per_core; + unsigned int nr_vcpus; + int numa_node; + u64 slot_uid; + u16 state; + cpumask_var_t *threads_per_core; + cpumask_var_t vcpu_ids; +}; + +/** + * enum ne_state - States available for an enclave. + * @NE_STATE_INIT: The enclave has not been started yet. + * @NE_STATE_RUNNING: The enclave was started and is running as expected. + * @NE_STATE_STOPPED: The enclave exited without userspace interaction. + */ +enum ne_state { + NE_STATE_INIT = 0, + NE_STATE_RUNNING = 2, + NE_STATE_STOPPED = U16_MAX, +}; + +/** + * struct ne_devs - Data structure to keep refs to the NE misc and PCI devices. + * @ne_misc_dev: Nitro Enclaves misc device. + * @ne_pci_dev : Nitro Enclaves PCI device. + */ +struct ne_devs { + struct miscdevice *ne_misc_dev; + struct ne_pci_dev *ne_pci_dev; +}; + +/* Nitro Enclaves (NE) data structure for keeping refs to the NE misc and PCI devices. */ +extern struct ne_devs ne_devs; + +#endif /* _NE_MISC_DEV_H_ */ -- 2.20.1 (Apple Git-117) Amazon Development Center (Romania) S.R.L. registered office: 27A Sf. Lazar Street, UBC5, floor 2, Iasi, Iasi County, 700045, Romania. Registered in Romania. Registration number J22/2621/2005.