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,URIBL_BLOCKED, 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 C9235C54FC9 for ; Tue, 21 Apr 2020 18:42:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AAD5C206D9 for ; Tue, 21 Apr 2020 18:42:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="FQ1xIRVP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729495AbgDUSmf (ORCPT ); Tue, 21 Apr 2020 14:42:35 -0400 Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:64501 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729457AbgDUSmd (ORCPT ); Tue, 21 Apr 2020 14:42:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1587494552; x=1619030552; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=JvAkbGXE1TkqLW/VIeJ1UyQVKOVRurbP5B+dKLPBzQM=; b=FQ1xIRVPrambeWWZ8V9Px9igxHKBcFcQJxpnIjzDYYy1BG2G9XZGmYD5 DOPsUDCAjLocLYrzhwdVWk1gz/8ttFOdZkp+d7mgov3id03hszbl9TJ4E grSZGe6QCQZAZRncJchBahvjx6Qis5UDPhGqgd6UW+NxjaygfxL5w14sc o=; IronPort-SDR: iTDTXD0VqbwQEv8BZHVf78cDcxHnyu4DA5JEEZvZhTMvucS95gF47zQxlGu8JiElk0mequShib N40L7bUh51kQ== X-IronPort-AV: E=Sophos;i="5.72,411,1580774400"; d="scan'208";a="30232759" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-2a-e7be2041.us-west-2.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9101.sea19.amazon.com with ESMTP; 21 Apr 2020 18:42:31 +0000 Received: from EX13MTAUEA002.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2a-e7be2041.us-west-2.amazon.com (Postfix) with ESMTPS id DC015A22F5; Tue, 21 Apr 2020 18:42:29 +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; Tue, 21 Apr 2020 18:42:29 +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; Tue, 21 Apr 2020 18:42:20 +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 , Stewart Smith , Uwe Dannowski , , , Andra Paraschiv Subject: [PATCH v1 03/15] nitro_enclaves: Define enclave info for internal bookkeeping Date: Tue, 21 Apr 2020 21:41:38 +0300 Message-ID: <20200421184150.68011-4-andraprs@amazon.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) In-Reply-To: <20200421184150.68011-1-andraprs@amazon.com> References: <20200421184150.68011-1-andraprs@amazon.com> MIME-Version: 1.0 X-Originating-IP: [10.43.160.90] X-ClientProxiedBy: EX13D25UWC004.ant.amazon.com (10.43.162.201) 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 --- .../virt/amazon/nitro_enclaves/ne_misc_dev.h | 120 ++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 drivers/virt/amazon/nitro_enclaves/ne_misc_dev.h diff --git a/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.h b/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.h new file mode 100644 index 000000000000..dece3ead86b9 --- /dev/null +++ b/drivers/virt/amazon/nitro_enclaves/ne_misc_dev.h @@ -0,0 +1,120 @@ +/* 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; + + /* 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. + * + * TODO: Determine if the following states are exposing enough information + * to the kernel driver. + */ +enum ne_state { + /* NE_ENCLAVE_START ioctl was never issued for the enclave. */ + NE_STATE_INIT = 0, + + /** + * NE_ENCLAVE_START 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.