Received: by 2002:a25:1104:0:0:0:0:0 with SMTP id 4csp585121ybr; Fri, 22 May 2020 13:59:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzXqZuFRfjzV5BfJooO6PzVeLQhm2WQE6PuW0OxKgndmcQwAm3uu5pJsbdsG/JKIFhskTsQ X-Received: by 2002:a05:6402:306a:: with SMTP id bs10mr4668020edb.227.1590181187728; Fri, 22 May 2020 13:59:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1590181187; cv=none; d=google.com; s=arc-20160816; b=BgN/wZTUl+n4YD+/3u5McaaSe1IZZIb/OUt9BMxQzoUTpRhjI/3eF8SY3EgJWyQeVU lOQcBnjgztAjWbGqzBtS4Bxhyj1NO8Krj9hqZ6e3zWoi0xodLkERtAwHaED+8Xe7aIen cuNtozWP5eOivR+8AEER3QqhS3GPCh3uNqYIB/lHo9lUe4BH+p3U90oxFD7OkIewcCYy ffSqagzjodeCkOzyiRqs/zf8qq+iQKhLzXS7Hyr+Cnvs5/lc72TcxqO77p9655CUuWQD FFZegyDdw6H1awAFhI0/moN4bRCr25gKvv2gOLDo9aIsl43wFfTXg9/Vbo74imiRSbRw Oc+Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender: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=vFkYqZU9Wx/zKjtOD/Wl4RRFiOamSbCXQKdv/bUFqjI=; b=GjtjdbP+EXUjYKuKGMtWm1qrwq+fPNYXMOfUSg9SDZKbd1JCjOLPQvczgk2r+CW1yn mgjDGM4zBF4KTOCyIwcWoVv+y2nNYpm5wQ34EwplGpJKQ7rpUYXX3P7pUP9RnuXnY1m4 dTmz5lHk8U3TwN00r4z4O2ckgtxgrY534xnXfzdkfmRWk7a1c5HtC+Rh6XVLqlELLzu2 yRgUbbGYLnOIYbEGhZGFv4rjSYzcJYawj4CZKoSNd4BByN3xltKO1G17isWq+64A/hKb EUY9Y2eRaREr3cnOpySTbmxutRMKRwguINIupgtnwhJBTG5haEpLEl6C9+2IVkXS69gD v9Bg== 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 f26si5720373ejb.74.2020.05.22.13.59.25; Fri, 22 May 2020 13:59:47 -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 S1731029AbgEVU4A (ORCPT + 99 others); Fri, 22 May 2020 16:56:00 -0400 Received: from mga12.intel.com ([192.55.52.136]:60476 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730963AbgEVUz7 (ORCPT ); Fri, 22 May 2020 16:55:59 -0400 IronPort-SDR: WqJrNj/R5UKwfUNmeMLoRshGKTtkgVXzLGYeAEOEKUzZW6qiaIE0raz0bgTS1iIed4Tb1Q6XYX vRJBtnkTx0BQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 May 2020 13:55:58 -0700 IronPort-SDR: dU0Dsd3DvzJmEsj0mYWESgrCPSLAUbtyEtMVvfMM4EiPxTbRoG2wGGxprObvU1D74JGBco+3+Y KrCwr7teug6g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,423,1583222400"; d="scan'208";a="269112787" Received: from twilles-mobl.amr.corp.intel.com (HELO [10.255.5.97]) ([10.255.5.97]) by orsmga006.jf.intel.com with ESMTP; 22 May 2020 13:55:56 -0700 Subject: Re: [PATCH v12 00/18] Enable FSGSBASE instructions To: Don Porter , Jarkko Sakkinen , Thomas Gleixner Cc: Andi Kleen , Sasha Levin , linux-kernel@vger.kernel.org, bp@alien8.de, luto@kernel.org, hpa@zytor.com, tony.luck@intel.com, ravi.v.shankar@intel.com, chang.seok.bae@intel.com References: <20200511045311.4785-1-sashal@kernel.org> <0186c22a8a6be1516df0703c421faaa581041774.camel@linux.intel.com> <20200515164013.GF29995@sasha-vm> <20200518153407.GA499505@tassilo.jf.intel.com> <371e6a92cad25cbe7a8489785efa7d3457ecef3b.camel@linux.intel.com> <87v9ksvoaq.fsf@nanos.tec.linutronix.de> <20200519164853.GA19706@linux.intel.com> <7eb45e02-03bf-0af0-c915-794bf49d66d7@cs.unc.edu> 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: <067d58cf-3828-5b94-0f78-682ba2670739@intel.com> Date: Fri, 22 May 2020 13:55:56 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <7eb45e02-03bf-0af0-c915-794bf49d66d7@cs.unc.edu> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/22/20 1:14 PM, Don Porter wrote: > I wanted to clarify that we never intended the Graphene kernel module > you mention for production use, as well as to comment in support of this > patch. Could you also clarify: Did you know that the FSGSBASE kernel module introduced a root vulnerability? Where did it come from in the first place?