Received: by 2002:a05:7412:f690:b0:e2:908c:2ebd with SMTP id ej16csp1216348rdb; Fri, 20 Oct 2023 11:39:55 -0700 (PDT) X-Google-Smtp-Source: AGHT+IE5yPNxiPmU6Z2lzBKAZ5nmKF2g4qfVH/ORaFdmHZzKd2AJuWlT1YnDbIFnJM4n/lwBxH4D X-Received: by 2002:a05:6358:9101:b0:141:8c:75ad with SMTP id q1-20020a056358910100b00141008c75admr2969232rwq.28.1697827194933; Fri, 20 Oct 2023 11:39:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1697827194; cv=none; d=google.com; s=arc-20160816; b=twojofQ1iD31Ur9swQ8cSHibj/rzRqUKBidksMP/KEE/KONnaK2rvHXe7t2nnKGso3 +/qL0/BzJ4Qixcz+eyZHRC5hTT06emct2LwL85ggCAZsYgHHzrqqxMOub2BTW1wWnLpL EXXER0ixVF1WlpDqgmoS6DRx+oN5puKURWjLYJVt+HNyDSpK6Dwmp/3ghKJjoi/m7UtD Ewwqokt99PHNlatshDrm3AR4hdJDwAU7RaU/v3Hcyu5JQjGyX3j++401ybJF5BUFzTNn 3y20GiABbXz5vPv6wRdk/x3ZV8G3/rSqS3z+chiFQNKFi3ob1h5JuZhO0cQKXcbcg8TL C3Mg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:in-reply-to:autocrypt :from:references:cc:to:content-language:subject:user-agent :mime-version:date:message-id:dkim-signature; bh=lrrMJ+y4m9frBGdjh1KqQNT1dNkQIhMvL9Dg2JadnCE=; fh=AbFFc2fEYh/NdM85LCF+jvbJh8bu+W3y26ui8qYwESU=; b=Z8Bvk1irgpbD1f+xRofV+oKBLC29OO3FBSW9MNQPzs+Ovyf9WEVFctEdNR06GZ7rXn Jg4TFSu1INnYo6C61God7/PRAN/RTv9jkmkdymJ/e9p88e7hOC8NLqhqXwBWcQcfZveP bjcjf5ugkPL56yTxoptX/79uLFjm+GEY8Izmc8ThF3Q8tlankm+VmNvgXEHvzTRhXWfe SIKG9TuWXn03xXDH+570CUvtwVNICk4iY05f2UtbSwQQGpfMaBn53vELxsWFsKg83u77 hvd83QRH4Iw0/ha2wRfQ+JrC0EAM8m8lkQQQRmbcCIR+kmtWV+73GhbpEW0nY/C7STtJ OBlg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=IU6b34pU; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from agentk.vger.email (agentk.vger.email. [23.128.96.32]) by mx.google.com with ESMTPS id i191-20020a6387c8000000b00578cbee11easi2370539pge.9.2023.10.20.11.39.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Oct 2023 11:39:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=IU6b34pU; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id B83AB82DAB7F; Fri, 20 Oct 2023 11:39:52 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229660AbjJTSjn (ORCPT + 99 others); Fri, 20 Oct 2023 14:39:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229555AbjJTSjm (ORCPT ); Fri, 20 Oct 2023 14:39:42 -0400 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96F9019E; Fri, 20 Oct 2023 11:39:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697827181; x=1729363181; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=cS5Sm1NoU8WuHcijx6GH45ZLn2vCsSTz5Qhh30cOJZw=; b=IU6b34pUP1Vxf/EWNjVRVgvGQE9Ry+1LO7GMNtyz3txIhM6LhJi1D3sy 7ejOd1xLJddUjjlY1MtZ0k9NVthJvQBR9t/aECie0h/dJmcDGudLOKegC gipwkHwhdrpXE19Ay00UuSo+Np8NXjK3izawy3lhGXKNH4xxqG/EVGFcM n55LXaC+AmJdPDBUpue383UELddQWcbnVXfSRdAXGmqYqH5srozJauWqu Xyxn2InZ1h7QN8m0kePR8TBJr1wOhP5cvCO4nFKZOoQL83RNTKb3f5UTM BVxqTCF0v9FvztiVb3v8oL/odhmCV3oylAJ5S7xj7n9NQR2I3Kxiux3xv Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10869"; a="5166104" X-IronPort-AV: E=Sophos;i="6.03,239,1694761200"; d="scan'208";a="5166104" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2023 11:39:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10869"; a="792491303" X-IronPort-AV: E=Sophos;i="6.03,239,1694761200"; d="scan'208";a="792491303" Received: from shortjox-mobl.amr.corp.intel.com (HELO [10.209.49.114]) ([10.209.49.114]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2023 11:39:39 -0700 Message-ID: <5245c0df-130c-443d-896b-01887875382b@intel.com> Date: Fri, 20 Oct 2023 11:39:32 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] x86/mm: Print the encryption features correctly when a paravisor is present Content-Language: en-US To: Dexuan Cui , KY Srinivasan , Haiyang Zhang , "wei.liu@kernel.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "x86@kernel.org" , "hpa@zytor.com" , "luto@kernel.org" , "peterz@infradead.org" , "stefan.bader@canonical.com" , Tim Gardner , "roxana.nicolescu@canonical.com" , "cascardo@canonical.com" , "Michael Kelley (LINUX)" , "jgross@suse.com" , "sathyanarayanan.kuppuswamy@linux.intel.com" , "kirill.shutemov@linux.intel.com" , "sashal@kernel.org" , "matija.glavinic-pecotic.ext@nokia.com" , "linux-hyperv@vger.kernel.org" Cc: "linux-kernel@vger.kernel.org" References: <20231019062030.3206-1-decui@microsoft.com> <00ff2f75-e780-4e2d-bcc9-f441f5ef879c@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/aCccJK18ZwNjFhqr4MliQARAQABzUVEYXZpZCBDaHJp c3RvcGhlciBIYW5zZW4gKEludGVsIFdvcmsgQWRkcmVzcykgPGRhdmUuaGFuc2VuQGludGVs LmNvbT7CwXgEEwECACIFAlQ+9J0CGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEGg1 lTBwyZKwLZUP/0dnbhDc229u2u6WtK1s1cSd9WsflGXGagkR6liJ4um3XCfYWDHvIdkHYC1t MNcVHFBwmQkawxsYvgO8kXT3SaFZe4ISfB4K4CL2qp4JO+nJdlFUbZI7cz/Td9z8nHjMcWYF IQuTsWOLs/LBMTs+ANumibtw6UkiGVD3dfHJAOPNApjVr+M0P/lVmTeP8w0uVcd2syiaU5jB aht9CYATn+ytFGWZnBEEQFnqcibIaOrmoBLu2b3fKJEd8Jp7NHDSIdrvrMjYynmc6sZKUqH2 I1qOevaa8jUg7wlLJAWGfIqnu85kkqrVOkbNbk4TPub7VOqA6qG5GCNEIv6ZY7HLYd/vAkVY E8Plzq/NwLAuOWxvGrOl7OPuwVeR4hBDfcrNb990MFPpjGgACzAZyjdmYoMu8j3/MAEW4P0z F5+EYJAOZ+z212y1pchNNauehORXgjrNKsZwxwKpPY9qb84E3O9KYpwfATsqOoQ6tTgr+1BR CCwP712H+E9U5HJ0iibN/CDZFVPL1bRerHziuwuQuvE0qWg0+0SChFe9oq0KAwEkVs6ZDMB2 P16MieEEQ6StQRlvy2YBv80L1TMl3T90Bo1UUn6ARXEpcbFE0/aORH/jEXcRteb+vuik5UGY 5TsyLYdPur3TXm7XDBdmmyQVJjnJKYK9AQxj95KlXLVO38lczsFNBFRjzmoBEACyAxbvUEhd GDGNg0JhDdezyTdN8C9BFsdxyTLnSH31NRiyp1QtuxvcqGZjb2trDVuCbIzRrgMZLVgo3upr MIOx1CXEgmn23Zhh0EpdVHM8IKx9Z7V0r+rrpRWFE8/wQZngKYVi49PGoZj50ZEifEJ5qn/H Nsp2+Y+bTUjDdgWMATg9DiFMyv8fvoqgNsNyrrZTnSgoLzdxr89FGHZCoSoAK8gfgFHuO54B lI8QOfPDG9WDPJ66HCodjTlBEr/Cwq6GruxS5i2Y33YVqxvFvDa1tUtl+iJ2SWKS9kCai2DR 3BwVONJEYSDQaven/EHMlY1q8Vln3lGPsS11vSUK3QcNJjmrgYxH5KsVsf6PNRj9mp8Z1kIG qjRx08+nnyStWC0gZH6NrYyS9rpqH3j+hA2WcI7De51L4Rv9pFwzp161mvtc6eC/GxaiUGuH BNAVP0PY0fqvIC68p3rLIAW3f97uv4ce2RSQ7LbsPsimOeCo/5vgS6YQsj83E+AipPr09Caj 0hloj+hFoqiticNpmsxdWKoOsV0PftcQvBCCYuhKbZV9s5hjt9qn8CE86A5g5KqDf83Fxqm/ vXKgHNFHE5zgXGZnrmaf6resQzbvJHO0Fb0CcIohzrpPaL3YepcLDoCCgElGMGQjdCcSQ+Ci FCRl0Bvyj1YZUql+ZkptgGjikQARAQABwsFfBBgBAgAJBQJUY85qAhsMAAoJEGg1lTBwyZKw l4IQAIKHs/9po4spZDFyfDjunimEhVHqlUt7ggR1Hsl/tkvTSze8pI1P6dGp2XW6AnH1iayn yRcoyT0ZJ+Zmm4xAH1zqKjWplzqdb/dO28qk0bPso8+1oPO8oDhLm1+tY+cOvufXkBTm+whm +AyNTjaCRt6aSMnA/QHVGSJ8grrTJCoACVNhnXg/R0g90g8iV8Q+IBZyDkG0tBThaDdw1B2l asInUTeb9EiVfL/Zjdg5VWiF9LL7iS+9hTeVdR09vThQ/DhVbCNxVk+DtyBHsjOKifrVsYep WpRGBIAu3bK8eXtyvrw1igWTNs2wazJ71+0z2jMzbclKAyRHKU9JdN6Hkkgr2nPb561yjcB8 sIq1pFXKyO+nKy6SZYxOvHxCcjk2fkw6UmPU6/j/nQlj2lfOAgNVKuDLothIxzi8pndB8Jju KktE5HJqUUMXePkAYIxEQ0mMc8Po7tuXdejgPMwgP7x65xtfEqI0RuzbUioFltsp1jUaRwQZ MTsCeQDdjpgHsj+P2ZDeEKCbma4m6Ez/YWs4+zDm1X8uZDkZcfQlD9NldbKDJEXLIjYWo1PH hYepSffIWPyvBMBTW2W5FRjJ4vLRrJSUoEfJuPQ3vW9Y73foyo/qFoURHO48AinGPZ7PC7TF vUaNOTjKedrqHkaOcqB185ahG2had0xnFsDPlx5y In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Fri, 20 Oct 2023 11:39:52 -0700 (PDT) On 10/19/23 23:01, Dexuan Cui wrote: > This patch only modifies x86 related files. I think it's unlikely to see > a third hardware Coco implementation for x86 in the foreseeable feature (?) OK, then what good is this patch in the first place? If you are right, then this would give equivalent information: cat /proc/cpuinfo | grep -q Intel && echo 'TDX' cat /proc/cpuinfo | grep -q AMD && echo 'SEV' No kernel patching needed, right?