Received: by 2002:ab2:6816:0:b0:1f9:5764:f03e with SMTP id t22csp1072920lqo; Fri, 17 May 2024 09:48:52 -0700 (PDT) X-Forwarded-Encrypted: i=2; AJvYcCWRw7k9G5djwra4xw6gudt5v/LC9GEe0T3QbP+wehrWr3yOjklE8GQvi0erKt3JhUlTnQSSBGFZnZHmvxBh8m1WsLchulRO5xhsv0VEzw== X-Google-Smtp-Source: AGHT+IEX0UuQyk0YFn/Kwefv/FFtZw/lCKQRnqB/Z3cI1iA3OIU0+yHng0OOrTMHORDUX6MYo49c X-Received: by 2002:a17:906:590a:b0:a59:a2c0:3252 with SMTP id a640c23a62f3a-a5a2d681287mr1411570566b.76.1715964532446; Fri, 17 May 2024 09:48:52 -0700 (PDT) Return-Path: Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. [147.75.80.249]) by mx.google.com with ESMTPS id a640c23a62f3a-a5cfb4be933si183526666b.1013.2024.05.17.09.48.52 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 May 2024 09:48:52 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-182360-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@intel.com header.s=Intel header.b=Ih0CsYrz; arc=fail (body hash mismatch); spf=pass (google.com: domain of linux-kernel+bounces-182360-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) smtp.mailfrom="linux-kernel+bounces-182360-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id ED6751F24394 for ; Fri, 17 May 2024 16:48:51 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2687D13D8A0; Fri, 17 May 2024 16:48:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Ih0CsYrz" Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 031FC3C068 for ; Fri, 17 May 2024 16:48:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715964522; cv=none; b=hHTs5BCC5G6PLU6epmg5QLGmp2Dc7jwmnd3yV1rHaueI/M73+jcyLhxnYU6qv5al9Xm8s2dlcRAD4CCqbrWRbm7WVkOOe6YsZ5inyFn42XCVliMDQuvWRn1lqYy12wrCy+IhrXr9fm4ElkfpHzO7TQrP3taDeVldsb2gArK8+VU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715964522; c=relaxed/simple; bh=XjEfAMxMjWKCRElBESMbiukPAoJOErDdcfkEdTnxsVE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=YfUqwysfKxqiqtuPOKOPvDxFQKaL9NiepcCRZh4alUtI+F94JCjnVPqL0PMGlBeM8x8eJQykiwBuBkp4BCO1rgAVFRcN90a+voH4gYmIqQfafsH25GpYQ9siWv1m2bUzovloUKruSfxakrRXspoOX0bkaSf0jveUsSD867NYlEs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Ih0CsYrz; arc=none smtp.client-ip=192.198.163.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1715964521; x=1747500521; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=XjEfAMxMjWKCRElBESMbiukPAoJOErDdcfkEdTnxsVE=; b=Ih0CsYrzZ2UZHR8l970PQdhP8e6dB4mNoijzhzTHtU/ErN/uhUSdcGAg GW6qD8R0ypjVMlSDJFS/2ZaAVQ+6SYUyGrxzNRvn3KRzReRei0VeZacC0 BR59yxJBtqDCd5yZtLXUnIfqY+yI7RHEoqGciIj8nYHiy3yckzxjotDEo hZYbd2xUYKXQGUYGzs5eq3oPGhyTGKJGvxx50QqtzNDdu4Iumco9slENV WeADBZbV91SMerzlsXYZyRBYGUbqpg8jt88Ox9MW1/O8nP7bsj+X2KQda NJW4dO2BBytg3S3OMnCXBsD6UHDJk5SOz/Ijo8j+ZJiv28BMK0wf9Nzek g==; X-CSE-ConnectionGUID: iSA/PSg9SyCCDgG4t+V0sQ== X-CSE-MsgGUID: vQ4uRJuDT3SAi0kS6HR4mQ== X-IronPort-AV: E=McAfee;i="6600,9927,11075"; a="12368466" X-IronPort-AV: E=Sophos;i="6.08,168,1712646000"; d="scan'208";a="12368466" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 May 2024 09:48:40 -0700 X-CSE-ConnectionGUID: Tup1exICQwySjZyJ+SinJA== X-CSE-MsgGUID: Q1cXKmAsTSiN7cOpte4Ltw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,168,1712646000"; d="scan'208";a="31859679" Received: from kinlongk-mobl1.amr.corp.intel.com (HELO [10.125.108.204]) ([10.125.108.204]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 May 2024 09:48:39 -0700 Message-ID: <4b3adb59-50ea-419e-ad02-e19e8ca20dee@intel.com> Date: Fri, 17 May 2024 09:48:39 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] x86/kvm/tdx: Save %rbp in TDX_MODULE_CALL To: Juergen Gross , "Kirill A. Shutemov" Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linux-coco@lists.linux.dev, Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" References: <20240517121450.20420-1-jgross@suse.com> <2a2guben2ysyeb43rzg6zelzpa57o24ufai3mi6ocewwvgu63l@c7dle47q7hzw> <03d27b6a-be96-44d7-b4ea-aa00ccab4cc5@suse.com> <6df4fb48-9947-46ec-af5a-66fa06d6a83b@intel.com> <86ca805d-7ed7-47dd-8228-5e19fbade53f@suse.com> From: Dave Hansen Content-Language: en-US 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 On 5/17/24 08:58, Juergen Gross wrote: > On 17.05.24 17:52, Dave Hansen wrote: .. >> Once we have the specific TDX module version, we can go ask the folks >> who write it if there were any RBP clobbering bugs. > > Okay, how to get the TDX module version? You need something like this: > https://lore.kernel.org/all/20231012134136.1310650-1-yi.sun@intel.com/ .. and yeah, this needs to be upstream.