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[170.10.129.124]) by mx.google.com with ESMTPS id a1e0cc1a2514c-85b4e8264ecsi628369241.68.2024.11.26.04.48.11 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Nov 2024 04:48:11 -0800 (PST) Received-SPF: pass (google.com: domain of berrange@redhat.com designates 170.10.129.124 as permitted sender) client-ip=170.10.129.124; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=dctu303+; spf=pass (google.com: domain of berrange@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=berrange@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1732625290; h=from:from:reply-to: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=N3uDjIOuIBBBmffy6NPeIvifakQpofHlTffpbOUPghE=; b=dctu303+qPoPmzlTDlr+KRrcZUAPuPlnkPWa4C1bmMkZYGmEHCF6rz7LZO1C+FFFGhlq63 hEx2kzea+5mNapKUcOB1zlBB3s+TC3gGC4KhyirHoTNzs25XF9S0X6cXm/zi6pxwqsKX1C KSNhzkuMcGedc+V6ZhFPUFkzvXkJReU= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-57-aLfjaZgEMuqz30yjQlf4yQ-1; Tue, 26 Nov 2024 07:48:07 -0500 X-MC-Unique: aLfjaZgEMuqz30yjQlf4yQ-1 X-Mimecast-MFC-AGG-ID: aLfjaZgEMuqz30yjQlf4yQ Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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 mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 59CD01955F56; Tue, 26 Nov 2024 12:48:06 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.147]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2F36D195E483; Tue, 26 Nov 2024 12:48:02 +0000 (UTC) Date: Tue, 26 Nov 2024 12:47:59 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Markus Armbruster Cc: Jean-Philippe Brucker , peter.maydell@linaro.org, richard.henderson@linaro.org, philmd@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, alex.bennee@linaro.org, Eric Blake , Eduardo Habkost Subject: Re: [PATCH v3 10/26] target/arm/kvm-rme: Add Realm Personalization Value parameter Message-ID: Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= References: <20241125195626.856992-2-jean-philippe@linaro.org> <20241125195626.856992-12-jean-philippe@linaro.org> <87wmgqsbp1.fsf@pond.sub.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <87wmgqsbp1.fsf@pond.sub.org> User-Agent: Mutt/2.2.12 (2023-09-09) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-TUID: YYM9p17QBZ+M On Tue, Nov 26, 2024 at 08:20:42AM +0100, Markus Armbruster wrote: > Jean-Philippe Brucker writes: > > > The Realm Personalization Value (RPV) is provided by the user to > > distinguish Realms that have the same initial measurement. > > > > The user provides up to 64 hexadecimal bytes. They are stored into the > > RPV in the same order, zero-padded on the right. > > > > Cc: Eric Blake > > Cc: Markus Armbruster > > Cc: Daniel P. Berrangé > > Cc: Eduardo Habkost > > Acked-by: Markus Armbruster > > Signed-off-by: Jean-Philippe Brucker > > --- > > v2->v3: Fix documentation > > --- > > qapi/qom.json | 15 ++++++ > > target/arm/kvm-rme.c | 111 +++++++++++++++++++++++++++++++++++++++++++ > > 2 files changed, 126 insertions(+) > > > > diff --git a/qapi/qom.json b/qapi/qom.json > > index a8beeabf1f..f982850bca 100644 > > --- a/qapi/qom.json > > +++ b/qapi/qom.json > > @@ -1068,6 +1068,19 @@ > > 'data': { '*cpu-affinity': ['uint16'], > > '*node-affinity': ['uint16'] } } > > > > +## > > +# @RmeGuestProperties: > > +# > > +# Properties for rme-guest objects. > > +# > > +# @personalization-value: Realm personalization value, as a 64-byte > > +# hex string. This optional parameter allows to uniquely identify > > +# the VM instance during attestation. (default: 0) > > QMP commonly uses base64 for encoding binary data. Any particular > reason to deviate? > > Is the "hex string" to be mapped to binary in little or big endian? Not > an issue with base64. Agreed, using base64 is preferrable for consistency. > > Nitpick: (default: all-zero), please, for consistency with similar > documentation in SevSnpGuestProperties. > > > +# > > +# Since: 9.3 There is never any x.3 version of QEMU, as we bump the major version once a year. IOW, next release you could target this for will be 10.0 > > +## > > +{ 'struct': 'RmeGuestProperties', > > + 'data': { '*personalization-value': 'str' } } > > > > ## > > # @ObjectType: > > @@ -1121,6 +1134,7 @@ > > { 'name': 'pr-manager-helper', > > 'if': 'CONFIG_LINUX' }, > > 'qtest', > > + 'rme-guest', > > 'rng-builtin', > > 'rng-egd', > > { 'name': 'rng-random', > > The commit message claims the patch adds a parameter. It actually adds > an entire object type. The object should be added to qom.json earlier in this series when the RmeGuest class is defined, then this patch would merely be adding the parameter. > > > @@ -1195,6 +1209,7 @@ > > 'pr-manager-helper': { 'type': 'PrManagerHelperProperties', > > 'if': 'CONFIG_LINUX' }, > > 'qtest': 'QtestProperties', > > + 'rme-guest': 'RmeGuestProperties', > > 'rng-builtin': 'RngProperties', > > 'rng-egd': 'RngEgdProperties', > > 'rng-random': { 'type': 'RngRandomProperties', With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|