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X-CSE-ConnectionGUID: BPfwG2YXS3WUskbc0w89OA== X-CSE-MsgGUID: zS8pWwa/S9OR4FZgJkTzVA== X-IronPort-AV: E=McAfee;i="6700,10204,11264"; a="35346207" X-IronPort-AV: E=Sophos;i="6.12,177,1728975600"; d="scan'208";a="35346207" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Nov 2024 15:59:33 -0800 X-CSE-ConnectionGUID: EmqQOnq3RDmIeIk8EbeJlA== X-CSE-MsgGUID: XolqvH29RsiWrDHLFhliMA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,177,1728975600"; d="scan'208";a="113995047" Received: from bjrankin-mobl3.amr.corp.intel.com (HELO [10.124.220.110]) ([10.124.220.110]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Nov 2024 15:59:32 -0800 Message-ID: Date: Fri, 22 Nov 2024 15:59:31 -0800 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: [RFC PATCH 1/6] x86/virt/tdx: Add SEAMCALL wrappers for TDX KeyID management To: Sean Christopherson Cc: Rick Edgecombe , kvm@vger.kernel.org, pbonzini@redhat.com, isaku.yamahata@gmail.com, kai.huang@intel.com, linux-kernel@vger.kernel.org, tony.lindgren@linux.intel.com, xiaoyao.li@intel.com, yan.y.zhao@intel.com, x86@kernel.org, adrian.hunter@intel.com, Isaku Yamahata , Binbin Wu , Yuan Yao References: <20241115202028.1585487-1-rick.p.edgecombe@intel.com> <20241115202028.1585487-2-rick.p.edgecombe@intel.com> <30d0cef5-82d5-4325-b149-0e99833b8785@intel.com> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/22/24 15:55, Sean Christopherson wrote: >> You know that 'tdr' is not just some random physical address. It's a >> whole physical page. It's page-aligned. It was allocated, from the >> allocator. It doesn't point to special memory. > Oh, but it does point to special memory. In this specific case I meant "special memory" as not RAM and not managed by the kernel.