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=-9.9 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,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 8E84AC433DF for ; Mon, 25 May 2020 22:14:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6427A2071A for ; Mon, 25 May 2020 22:14:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="emQHM7jQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388724AbgEYWOY (ORCPT ); Mon, 25 May 2020 18:14:24 -0400 Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:7110 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388523AbgEYWOV (ORCPT ); Mon, 25 May 2020 18:14:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1590444861; x=1621980861; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=b18dv13yc4zKf3QUlz/1mXvBUI/WDEDUZCWpefJO1LE=; b=emQHM7jQbq0buFZ8kj+wT7zKjRSIWWy3Jpa81kr205arKONQmZvIJExU aTVzINP4wk30OKH6TLD3raTZGfK0l6hJ3fxQ9vrNONZDG66XrtKzif5BZ x0s6hLLOb976s9Fw6AmdGudsO1LhehqK8XE16ie1h8PsgEy89eeaH58c4 A=; IronPort-SDR: 6EkIdD04Ex4vn4M+iVk9ZVqa91G7R9jRUCXQ+PNRBm/gl74MwSnKvHeDgsLgU28w6m8uBvyzNg J+UnN08sxVnw== X-IronPort-AV: E=Sophos;i="5.73,435,1583193600"; d="scan'208";a="37543768" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1a-67b371d8.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9101.sea19.amazon.com with ESMTP; 25 May 2020 22:14:20 +0000 Received: from EX13MTAUEA002.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1a-67b371d8.us-east-1.amazon.com (Postfix) with ESMTPS id 6236DA232B; Mon, 25 May 2020 22:14:18 +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; Mon, 25 May 2020 22:14:17 +0000 Received: from 38f9d34ed3b1.ant.amazon.com (10.43.160.90) by EX13D16EUB003.ant.amazon.com (10.43.166.99) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 25 May 2020 22:14:08 +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 v3 03/18] nitro_enclaves: Define enclave info for internal bookkeeping Date: Tue, 26 May 2020 01:13:19 +0300 Message-ID: <20200525221334.62966-4-andraprs@amazon.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) In-Reply-To: <20200525221334.62966-1-andraprs@amazon.com> References: <20200525221334.62966-1-andraprs@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.160.90] X-ClientProxiedBy: EX13D12UWC004.ant.amazon.com (10.43.162.182) To EX13D16EUB003.ant.amazon.com (10.43.166.99) Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org 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. Signed-off-by: Alexandru-Catalin Vasile Signed-off-by: Andra Paraschiv --- Changelog 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. --- 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..6f1db85fc741 --- /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 + +/* 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_ */ -- 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.