From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D883DC48BF8 for ; Mon, 19 Feb 2024 12:49:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rc34U-000790-70; Mon, 19 Feb 2024 07:48:34 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rc34T-00078s-BO for qemu-devel@nongnu.org; Mon, 19 Feb 2024 07:48:33 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rc34R-0007MG-P4 for qemu-devel@nongnu.org; Mon, 19 Feb 2024 07:48:33 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1708346910; 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=8QcQdbJQiRwyXUf1YN0AAQ3gmNVsZVc4jKp1T43zkGs=; b=hGDpuIc6YGPGCXzafH2KfL2zfOwUUJjsBuRsxz+nOMWCKGjZTlE1lSj6CSnVwNy23+QmNu OuS1sIrckbzsJxnw1YerpcWuE6MkfJvWO4GLFj3GZi4pGt4YZlcqRRO1Hxd8OTRsHjEUXv K+WcR5ZPqbgKVVIQkJ/0beSV2ZwSLDc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-166-kw20aGcYNy--qNOwiAH3Uw-1; Mon, 19 Feb 2024 07:48:27 -0500 X-MC-Unique: kw20aGcYNy--qNOwiAH3Uw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 0C6EE185A780; Mon, 19 Feb 2024 12:48:26 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.192.55]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C699CC185C0; Mon, 19 Feb 2024 12:48:25 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B222321E6740; Mon, 19 Feb 2024 13:48:24 +0100 (CET) From: Markus Armbruster To: Xiaoyao Li Cc: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Cornelia Huck , Daniel P . =?utf-8?Q?Berrang=C3=A9?= , Eric Blake , Marcelo Tosatti , qemu-devel@nongnu.org, kvm@vger.kernel.org, Michael Roth , Sean Christopherson , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang Subject: Re: [PATCH v4 29/66] i386/tdx: Support user configurable mrconfigid/mrowner/mrownerconfig In-Reply-To: <20240125032328.2522472-30-xiaoyao.li@intel.com> (Xiaoyao Li's message of "Wed, 24 Jan 2024 22:22:51 -0500") References: <20240125032328.2522472-1-xiaoyao.li@intel.com> <20240125032328.2522472-30-xiaoyao.li@intel.com> Date: Mon, 19 Feb 2024 13:48:24 +0100 Message-ID: <875xykfwmf.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.072, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Xiaoyao Li writes: > From: Isaku Yamahata > > Three sha384 hash values, mrconfigid, mrowner and mrownerconfig, of a TD > can be provided for TDX attestation. Detailed meaning of them can be > found: https://lore.kernel.org/qemu-devel/31d6dbc1-f453-4cef-ab08-4813f4e= 0ff92@intel.com/ > > Allow user to specify those values via property mrconfigid, mrowner and > mrownerconfig. They are all in base64 format. > > example > -object tdx-guest, \ > mrconfigid=3DASNFZ4mrze8BI0VniavN7wEjRWeJq83vASNFZ4mrze8BI0VniavN7wEjRW= eJq83v,\ > mrowner=3DASNFZ4mrze8BI0VniavN7wEjRWeJq83vASNFZ4mrze8BI0VniavN7wEjRWeJq= 83v,\ > mrownerconfig=3DASNFZ4mrze8BI0VniavN7wEjRWeJq83vASNFZ4mrze8BI0VniavN7wE= jRWeJq83v > > Signed-off-by: Isaku Yamahata > Co-developed-by: Xiaoyao Li > Signed-off-by: Xiaoyao Li > > --- > Changes in v4: > - describe more of there fields in qom.json > - free the old value before set new value to avoid memory leak in > _setter(); (Daniel) > > Changes in v3: > - use base64 encoding instread of hex-string; > --- > qapi/qom.json | 14 ++++++- > target/i386/kvm/tdx.c | 87 +++++++++++++++++++++++++++++++++++++++++++ > target/i386/kvm/tdx.h | 3 ++ > 3 files changed, 103 insertions(+), 1 deletion(-) > > diff --git a/qapi/qom.json b/qapi/qom.json > index 2177f3101382..15445f9e41fc 100644 > --- a/qapi/qom.json > +++ b/qapi/qom.json > @@ -905,10 +905,22 @@ > # pages. Some guest OS (e.g., Linux TD guest) may require this to > # be set, otherwise they refuse to boot. > # > +# @mrconfigid: ID for non-owner-defined configuration of the guest TD, > +# e.g., run-time or OS configuration. base64 encoded SHA384 digest. "base64 encoded SHA384" is not a sentence. Double-checking: the data being hashed here is the "non-owner-defined configuration of the guest TD", and the resulting hash is the "ID"? > +# > +# @mrowner: ID for the guest TD=E2=80=99s owner. base64 encoded SHA384 = digest. Likewise. > +# > +# @mrownerconfig: ID for owner-defined configuration of the guest TD, > +# e.g., specific to the workload rather than the run-time or OS. > +# base64 encoded SHA384 digest. Likewise. > +# > # Since: 9.0 > ## > { 'struct': 'TdxGuestProperties', > - 'data': { '*sept-ve-disable': 'bool' } } > + 'data': { '*sept-ve-disable': 'bool', > + '*mrconfigid': 'str', > + '*mrowner': 'str', > + '*mrownerconfig': 'str' } } The new members are optional, but their description in the doc comment doesn't explain behavior when present vs. behavior when absent. >=20=20 > ## > # @ThreadContextProperties: [...]