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 A4843C433DF for ; Mon, 25 May 2020 22:15:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 80864206B6 for ; Mon, 25 May 2020 22:15:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="wIzqBBQT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389185AbgEYWPh (ORCPT ); Mon, 25 May 2020 18:15:37 -0400 Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:7279 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388337AbgEYWPh (ORCPT ); Mon, 25 May 2020 18:15:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1590444937; x=1621980937; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/J3EvMWZsx0yMGadkcF2kk7XEzEeoJYwxkSsDWCkFuk=; b=wIzqBBQTrtiJd20JuI2uKs5fdYyzVh9VC62y8hajW6O6pNGUWwlxfywa ru8jcsZQMu5zGWhtwHKbPw6n33S3rBwo4XW6RnTAxFHoTee0rVHDHOgHi X5WnNWZoB8NVJpoFtXmtSmfVnnhxn+BQ0UriiMrjeiQbO5MPl8hi4uVi5 w=; IronPort-SDR: XG5lAVIf6l7YNccJv6vFbulLnXb7GZ7AwvPGIi0i4KhFEY4E25NFtTN18a7V5qI07MmfnpEpbC zMnAkJKerVtw== X-IronPort-AV: E=Sophos;i="5.73,435,1583193600"; d="scan'208";a="37543859" 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-9101.sea19.amazon.com with ESMTP; 25 May 2020 22:15:36 +0000 Received: from EX13MTAUEA002.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1e-27fb8269.us-east-1.amazon.com (Postfix) with ESMTPS id 49DE8A1F41; Mon, 25 May 2020 22:15:34 +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 22:15:33 +0000 Received: from 38f9d34ed3b1.ant.amazon.com (10.43.162.50) by EX13D16EUB003.ant.amazon.com (10.43.166.99) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 25 May 2020 22:15:24 +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 10/18] nitro_enclaves: Add logic for enclave image load metadata Date: Tue, 26 May 2020 01:13:26 +0300 Message-ID: <20200525221334.62966-11-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: [10.43.162.50] X-ClientProxiedBy: EX13D06UWA002.ant.amazon.com (10.43.160.143) 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 Before setting the memory regions for the enclave, the enclave image needs to be placed in memory. After the memory regions are set, this memory cannot be used anymore by the VM, being carved out. Add ioctl command logic to get the offset in enclave memory where to place the enclave image. Then the user space tooling copies the enclave image in the memory using the giveni memory offset. Signed-off-by: Andra Paraschiv --- Changelog v2 -> v3 * No changes. v1 -> v2 * New in v2. --- drivers/virt/nitro_enclaves/ne_misc_dev.c | 24 +++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev.c b/drivers/virt/nitro_enclaves/ne_misc_dev.c index 6db88e128d1f..143259847f71 100644 --- a/drivers/virt/nitro_enclaves/ne_misc_dev.c +++ b/drivers/virt/nitro_enclaves/ne_misc_dev.c @@ -243,6 +243,30 @@ static long ne_enclave_ioctl(struct file *file, unsigned int cmd, return rc; } + case NE_GET_IMAGE_LOAD_METADATA: { + struct image_load_metadata image_load_metadata = {}; + + if (copy_from_user(&image_load_metadata, (void *)arg, + sizeof(image_load_metadata))) { + pr_err_ratelimited(NE "Error in copy from user\n"); + + return -EFAULT; + } + + /* TODO: Check flags before setting the memory offset. */ + + image_load_metadata.memory_offset = NE_IMAGE_LOAD_OFFSET; + + if (copy_to_user((void *)arg, &image_load_metadata, + sizeof(image_load_metadata))) { + pr_err_ratelimited(NE "Error in copy to user\n"); + + return -EFAULT; + } + + return 0; + } + default: return -ENOTTY; } -- 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.