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X-IronPort-AV: E=McAfee;i="6500,9779,10582"; a="302215874" X-IronPort-AV: E=Sophos;i="5.96,305,1665471600"; d="scan'208";a="302215874" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jan 2023 09:09:50 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10582"; a="984724476" X-IronPort-AV: E=Sophos;i="5.96,305,1665471600"; d="scan'208";a="984724476" Received: from xiangyuy-mobl.amr.corp.intel.com (HELO [10.212.251.186]) ([10.212.251.186]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jan 2023 09:09:49 -0800 Message-ID: <426c6483-d10a-27f4-abc1-55de1f3b1356@intel.com> Date: Fri, 6 Jan 2023 09:09:48 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Subject: Re: [PATCH v8 02/16] x86/virt/tdx: Detect TDX during kernel boot Content-Language: en-US To: Kai Huang , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: linux-mm@kvack.org, peterz@infradead.org, tglx@linutronix.de, seanjc@google.com, pbonzini@redhat.com, dan.j.williams@intel.com, rafael.j.wysocki@intel.com, kirill.shutemov@linux.intel.com, ying.huang@intel.com, reinette.chatre@intel.com, len.brown@intel.com, tony.luck@intel.com, ak@linux.intel.com, isaku.yamahata@intel.com, chao.gao@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, bagasdotme@gmail.com, sagis@google.com, imammedo@redhat.com References: <75317b5b6f29e77b98455b0401bd903964f50814.1670566861.git.kai.huang@intel.com> From: Dave Hansen In-Reply-To: <75317b5b6f29e77b98455b0401bd903964f50814.1670566861.git.kai.huang@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: C5AE180012 X-Rspamd-Server: rspam01 X-Stat-Signature: 13pja6m3pen9omgnzkjuy5rtju41cj91 X-HE-Tag: 1673025213-205738 X-HE-Meta: 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.072165, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 12/8/22 22:52, Kai Huang wrote: > +++ b/arch/x86/virt/vmx/tdx/tdx.h > @@ -0,0 +1,15 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _X86_VIRT_TDX_H > +#define _X86_VIRT_TDX_H > + > +/* > + * This file contains both macros and data structures defined by the TDX > + * architecture and Linux defined software data structures and functions. > + * The two should not be mixed together for better readability. The > + * architectural definitions come first. > + */ > + > +/* MSR to report KeyID partitioning between MKTME and TDX */ > +#define MSR_IA32_MKTME_KEYID_PARTITIONING 0x00000087 The *VAST* majority of MSR definitions are in msr-index.h. Why is this one different from the norm?