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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id x1-20020a63aa41000000b003c6a5d78bb5si6200273pgo.411.2022.05.09.02.38.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 May 2022 02:38:30 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=TyRd62KQ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 00739205255; Mon, 9 May 2022 02:23:54 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359669AbiEFS3y (ORCPT + 99 others); Fri, 6 May 2022 14:29:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48672 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230050AbiEFS3u (ORCPT ); Fri, 6 May 2022 14:29:50 -0400 Received: from mail.skyhub.de (mail.skyhub.de [5.9.137.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3854C46B0B; Fri, 6 May 2022 11:26:06 -0700 (PDT) Received: from [127.0.0.1] (dynamic-002-247-254-212.2.247.pool.telefonica.de [2.247.254.212]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 5D11B1EC01B5; Fri, 6 May 2022 20:26:00 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1651861560; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lnptI7P6U9gMOK+00VQGCG5CfCdJFwofyyQn9dmbmtk=; b=TyRd62KQTg/LyhQp6/QPwZvfdE/pdL3FhjwrNvGEedYo1AGp3KQu5rY0k40GFuC3CTWFvr 7A55tb1Ujj1dWjDgwIlih8kl/5pGjZ189zgXvaklRFxdaZAOyh/uHaTQMTFr0w51geHbyx HF9t6+00QBZR6W3EMDoT9Y8Ktvr20e0= Date: Fri, 06 May 2022 18:25:56 +0000 From: Boris Petkov To: Dave Hansen , Dan Williams CC: Martin Fernandez , Linux Kernel Mailing List , linux-efi , Linux MM , platform-driver-x86@vger.kernel.org, daniel.gutson@eclypsium.com, Andrew Morton , Kees Cook , Darren Hart , "Schofield, Alison" , "Rafael J. Wysocki" , Mike Rapoport , Ard Biesheuvel , Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Dave Hansen , X86 ML , alex.bazhaniuk@eclypsium.com, hughsient@gmail.com, Andy Shevchenko , Greg KH , Ben Widawsky , "Huang, Kai" Subject: =?US-ASCII?Q?Re=3A_=5BPATCH_v8_0/8=5D_x86=3A_Show_in_sysfs_i?= =?US-ASCII?Q?f_a_memory_node_is_able_to_do_encryption?= User-Agent: K-9 Mail for Android In-Reply-To: <6abea873-52a2-f506-b21b-4b567bee1874@intel.com> References: <20220429201717.1946178-1-martin.fernandez@eclypsium.com> <6d90c832-af4a-7ed6-4f72-dae08bb69c37@intel.com> <47140A56-D3F8-4292-B355-5F92E3BA9F67@alien8.de> <6abea873-52a2-f506-b21b-4b567bee1874@intel.com> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On May 6, 2022 6:14:00 PM UTC, Dave Hansen wrot= e: >But, this interface will *work* both for the uniform and non-uniform >systems alike=2E And what would that additional information that some "node" - whatever "no= de" means nowadays - is not encrypted give you?=20 Note that the fwupd use case is to be able to say that memory encryption i= s active - nothing more=2E --=20 Sent from a small device: formatting sux and brevity is inevitable=2E