Received: by 2002:a05:6a10:6744:0:0:0:0 with SMTP id w4csp4704466pxu; Wed, 21 Oct 2020 03:16:03 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzC2VPkfpDUlJ0y+QE0lLkjqTqY0ruTZKVFZtqMza8crtEiaGkVGHUKx3KgleLC3S/SQFC9 X-Received: by 2002:a17:906:54d8:: with SMTP id c24mr2554438ejp.499.1603275363149; Wed, 21 Oct 2020 03:16:03 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1603275363; cv=none; d=google.com; s=arc-20160816; b=fcUCjLE/Krjqn9ZRjhz4144+y8bpO5e3r6TWPyXw2ifbbGDEDJEz3U0fSTk4lbn7cM zshzI2FZVfZoTvXMJZj24+8pCh1VU+pPnHivc8lLv+EKfLtHZYegb0WvdjFzyaBqRUd7 TafBMJh54u3wOf4pKQ67pnwZXXl4Y3DWxfx0n6sxjyHwLdy4KD8kTLJ/YWtgE2IkBzj6 isdrCq3AhmOShZ+qeUeND031wkEm2ipntxjTZinuRCLuko1Mg5iiRlXMuW875lZrzlkc 5hZxgggWjWNOwKIpblSGRlnx3cGRAQmyod+eS1Vf5a+6LwMXYbNhtEr/1hiP6WHD2GqL qbkw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:autocrypt:from :references:cc:to:subject:ironport-sdr:ironport-sdr; bh=kX/aJXNvpSqwbPgEAcjBy9YbVBQoD1QdKZSk5Aew6TE=; b=kPvWDr+/RfmsNS29uBRFR54Nm1Ebsj59EG3KPCQm8H6Q0q3wKhy4Wadnc1jIOrCmuv DGuul0Q+vundbYSytnVoaNTvOlC6LXV3sogLtLXGpfD9+K5A6wEm4WqizkhE6OZ8+xpB TBw25O1YUo1tZMJcZ1YetViRBOG7hR09lUmZrSR4eR+WRzltL+cNAgY1V6M0k1VNZRQ+ ftH7fXcv8/t5XnucxTlEJXBVoNsBphE3+u+bN4aLne+yeU5sCG1WgKeqt6wKdbV+tMb8 1EPE6ek2mOU0F1iI5IGt6izPxe2xbYGzY8b0PDQJ7F94Hwz91OS2qTJa9uR2f8RpZt6H YL6w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id p26si975045edi.247.2020.10.21.03.15.40; Wed, 21 Oct 2020 03:16:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2409825AbgJTVT3 (ORCPT + 99 others); Tue, 20 Oct 2020 17:19:29 -0400 Received: from mga01.intel.com ([192.55.52.88]:50755 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733310AbgJTVT2 (ORCPT ); Tue, 20 Oct 2020 17:19:28 -0400 IronPort-SDR: WOe5jOZrilEgJPr8XJHqznDM2eWczTVZl34U/8EKBb6uBurc1IX7VTXpazzynmU5RN7D3aJhYC zg0MYifVSQNA== X-IronPort-AV: E=McAfee;i="6000,8403,9780"; a="184925427" X-IronPort-AV: E=Sophos;i="5.77,398,1596524400"; d="scan'208";a="184925427" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2020 14:19:27 -0700 IronPort-SDR: zTwQ0ohRTre5wEy/VJPXFe03vEBCHq4ekeAgNJVc3A05eGKWJE/QUNRfLHjuFiT+xUQVL4FMdX mEIr+7A/GdYg== X-IronPort-AV: E=Sophos;i="5.77,398,1596524400"; d="scan'208";a="522512927" Received: from pnaik-mobl.amr.corp.intel.com (HELO [10.213.163.220]) ([10.213.163.220]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2020 14:19:26 -0700 Subject: Re: [PATCH v39 15/24] x86/sgx: Add SGX_IOC_ENCLAVE_PROVISION To: Jarkko Sakkinen , x86@kernel.org, linux-sgx@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, Jethro Beekman , Darren Kenny , Andy Lutomirski , akpm@linux-foundation.org, andriy.shevchenko@linux.intel.com, asapek@google.com, bp@alien8.de, cedric.xing@intel.com, chenalexchen@google.com, conradparker@google.com, cyhanish@google.com, haitao.huang@intel.com, kai.huang@intel.com, kai.svahn@intel.com, kmoy@google.com, ludloff@google.com, nhorman@redhat.com, npmccallum@redhat.com, puiterwijk@redhat.com, rientjes@google.com, sean.j.christopherson@intel.com, tglx@linutronix.de, yaozhangx@google.com, mikko.ylinen@intel.com References: <20201003045059.665934-1-jarkko.sakkinen@linux.intel.com> <20201003045059.665934-16-jarkko.sakkinen@linux.intel.com> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; keydata= xsFNBE6HMP0BEADIMA3XYkQfF3dwHlj58Yjsc4E5y5G67cfbt8dvaUq2fx1lR0K9h1bOI6fC oAiUXvGAOxPDsB/P6UEOISPpLl5IuYsSwAeZGkdQ5g6m1xq7AlDJQZddhr/1DC/nMVa/2BoY 2UnKuZuSBu7lgOE193+7Uks3416N2hTkyKUSNkduyoZ9F5twiBhxPJwPtn/wnch6n5RsoXsb ygOEDxLEsSk/7eyFycjE+btUtAWZtx+HseyaGfqkZK0Z9bT1lsaHecmB203xShwCPT49Blxz VOab8668QpaEOdLGhtvrVYVK7x4skyT3nGWcgDCl5/Vp3TWA4K+IofwvXzX2ON/Mj7aQwf5W iC+3nWC7q0uxKwwsddJ0Nu+dpA/UORQWa1NiAftEoSpk5+nUUi0WE+5DRm0H+TXKBWMGNCFn c6+EKg5zQaa8KqymHcOrSXNPmzJuXvDQ8uj2J8XuzCZfK4uy1+YdIr0yyEMI7mdh4KX50LO1 pmowEqDh7dLShTOif/7UtQYrzYq9cPnjU2ZW4qd5Qz2joSGTG9eCXLz5PRe5SqHxv6ljk8mb ApNuY7bOXO/A7T2j5RwXIlcmssqIjBcxsRRoIbpCwWWGjkYjzYCjgsNFL6rt4OL11OUF37wL QcTl7fbCGv53KfKPdYD5hcbguLKi/aCccJK18ZwNjFhqr4MliQARAQABzShEYXZpZCBDaHJp c3RvcGhlciBIYW5zZW4gPGRhdmVAc3I3MS5uZXQ+wsF7BBMBAgAlAhsDBgsJCAcDAgYVCAIJ CgsEFgIDAQIeAQIXgAUCTo3k0QIZAQAKCRBoNZUwcMmSsMO2D/421Xg8pimb9mPzM5N7khT0 2MCnaGssU1T59YPE25kYdx2HntwdO0JA27Wn9xx5zYijOe6B21ufrvsyv42auCO85+oFJWfE K2R/IpLle09GDx5tcEmMAHX6KSxpHmGuJmUPibHVbfep2aCh9lKaDqQR07gXXWK5/yU1Dx0r VVFRaHTasp9fZ9AmY4K9/BSA3VkQ8v3OrxNty3OdsrmTTzO91YszpdbjjEFZK53zXy6tUD2d e1i0kBBS6NLAAsqEtneplz88T/v7MpLmpY30N9gQU3QyRC50jJ7LU9RazMjUQY1WohVsR56d ORqFxS8ChhyJs7BI34vQusYHDTp6PnZHUppb9WIzjeWlC7Jc8lSBDlEWodmqQQgp5+6AfhTD kDv1a+W5+ncq+Uo63WHRiCPuyt4di4/0zo28RVcjtzlGBZtmz2EIC3vUfmoZbO/Gn6EKbYAn rzz3iU/JWV8DwQ+sZSGu0HmvYMt6t5SmqWQo/hyHtA7uF5Wxtu1lCgolSQw4t49ZuOyOnQi5 f8R3nE7lpVCSF1TT+h8kMvFPv3VG7KunyjHr3sEptYxQs4VRxqeirSuyBv1TyxT+LdTm6j4a mulOWf+YtFRAgIYyyN5YOepDEBv4LUM8Tz98lZiNMlFyRMNrsLV6Pv6SxhrMxbT6TNVS5D+6 UorTLotDZKp5+M7BTQRUY85qARAAsgMW71BIXRgxjYNCYQ3Xs8k3TfAvQRbHccky50h99TUY sqdULbsb3KhmY29raw1bgmyM0a4DGS1YKN7qazCDsdQlxIJp9t2YYdBKXVRzPCCsfWe1dK/q 66UVhRPP8EGZ4CmFYuPTxqGY+dGRInxCeap/xzbKdvmPm01Iw3YFjAE4PQ4hTMr/H76KoDbD cq62U50oKC83ca/PRRh2QqEqACvIH4BR7jueAZSPEDnzwxvVgzyeuhwqHY05QRK/wsKuhq7s UuYtmN92Fasbxbw2tbVLZfoidklikvZAmotg0dwcFTjSRGEg0Gr3p/xBzJWNavFZZ95Rj7Et db0lCt0HDSY5q4GMR+SrFbH+jzUY/ZqfGdZCBqo0cdPPp58krVgtIGR+ja2Mkva6ah94/oQN lnCOw3udS+Eb/aRcM6detZr7XOngvxsWolBrhwTQFT9D2NH6ryAuvKd6yyAFt3/e7r+HHtkU kOy27D7IpjngqP+b4EumELI/NxPgIqT69PQmo9IZaI/oRaKorYnDaZrMXViqDrFdD37XELwQ gmLoSm2VfbOYY7fap/AhPOgOYOSqg3/Nxcapv71yoBzRRxOc4FxmZ65mn+q3rEM27yRztBW9 AnCKIc66T2i92HqXCw6AgoBJRjBkI3QnEkPgohQkZdAb8o9WGVKpfmZKbYBo4pEAEQEAAcLB XwQYAQIACQUCVGPOagIbDAAKCRBoNZUwcMmSsJeCEACCh7P/aaOLKWQxcnw47p4phIVR6pVL e4IEdR7Jf7ZL00s3vKSNT+nRqdl1ugJx9Ymsp8kXKMk9GSfmZpuMQB9c6io1qZc6nW/3TtvK pNGz7KPPtaDzvKA4S5tfrWPnDr7n15AU5vsIZvgMjU42gkbemkjJwP0B1RkifIK60yQqAAlT YZ14P0dIPdIPIlfEPiAWcg5BtLQU4Wg3cNQdpWrCJ1E3m/RIlXy/2Y3YOVVohfSy+4kvvYU3 lXUdPb04UPw4VWwjcVZPg7cgR7Izion61bGHqVqURgSALt2yvHl7cr68NYoFkzbNsGsye9ft M9ozM23JSgMkRylPSXTeh5JIK9pz2+etco3AfLCKtaRVysjvpysukmWMTrx8QnI5Nn5MOlJj 1Ov4/50JY9pXzgIDVSrgy6LYSMc4vKZ3QfCY7ipLRORyalFDF3j5AGCMRENJjHPD6O7bl3Xo 4DzMID+8eucbXxKiNEbs21IqBZbbKdY1GkcEGTE7AnkA3Y6YB7I/j9mQ3hCgm5muJuhM/2Fr OPsw5tV/LmQ5GXH0JQ/TZXWygyRFyyI2FqNTx4WHqUn3yFj8rwTAU1tluRUYyeLy0ayUlKBH ybj0N71vWO936MqP6haFERzuPAIpxj2ezwu0xb1GjTk4ynna6h5GjnKgdfOWoRtoWndMZxbA z5cecg== Message-ID: <7bb4ff7b-0778-ad70-1fe0-6e1db284d45a@intel.com> Date: Tue, 20 Oct 2020 14:19:26 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201003045059.665934-16-jarkko.sakkinen@linux.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/2/20 9:50 PM, Jarkko Sakkinen wrote: > + * Failure to explicitly request access to a restricted attribute will cause > + * sgx_ioc_enclave_init() to fail. Currently, the only restricted attribute > + * is access to the PROVISION_KEY. Could we also justify why access is restricted, please? Maybe: Access is restricted because PROVISION_KEY is burned uniquely into each each processor, making it a perfect unique identifier with privacy and fingerprinting implications. Are there any other reasons for doing it this way?