From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F2F2026158C for ; Fri, 17 Apr 2026 02:37:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776393466; cv=none; b=SQ2VT7mbUiQBMa6EBPxGwbEtM/YLdbNrLiER9b87/qFhnmg50tiNfyQvrNUTPzT/0UhWtZ2CmSmaYqE9bSucm85Gh+n9zoO9x1JHkMJYzMuJoD3upXXmH13SAdciPDakuAI2HmSR2wj+JsCWbMRPYR7otwB/glf6E09Q8sUqxO0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776393466; c=relaxed/simple; bh=hG07uEpQGKoOxyCjyUV/VwJZrf4nzcK5TKwm68m2qAM=; h=Date:From:To:Cc:Message-ID:In-Reply-To:References:Subject: Mime-Version:Content-Type; b=NIDWQecs1VoCJ3D7qjueMUO6efF1hJiZ+MGUoIfxlfkRO5wKzGfK8If6ltGYLGzBjj+x8BUg2cEApczE/qXVYKtVoD51quOUo5FXIvMPRwd5oncFuXXjTmvmIVNkLjCMcr8xXfqP53ktoSVoFM5nCxoCfOy8KAaCkZWM49aQkm0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nNE8OJD8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nNE8OJD8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9753CC2BCB5; Fri, 17 Apr 2026 02:37:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776393465; bh=hG07uEpQGKoOxyCjyUV/VwJZrf4nzcK5TKwm68m2qAM=; h=Date:From:To:Cc:In-Reply-To:References:Subject:From; b=nNE8OJD8nhisgVs1/lTgzrfz3qKePv+EDgAKMTG4KzZw27SdzKqyaiWJ632cU9bI2 WQ2fkoado0yL7Tdg0J3dEZtZ4SrjPDz2SV5qb/H/STQx1tJBnGi5eq/zomnpCulOGR 7Uafx/Pb47Spd2YSawTT+qPWtnG0Lg7ndqSzqZc29nyPQSwUma4KCaKWxiz/oNh5Qr binQvKVBYpsVbYANpDArv8GY3+dQhVlShKQd1fJm8zlmwl+F8ajsHEslatN02F29t+ sSdB0se23SkJMEuxFNQ4f0uXXJZ8cQ9oiwXS9OFCqj9YcCy8WX5pAXuy8QbbVMEs+r S8eMYoY3X6D8Q== Received: from phl-compute-05.internal (phl-compute-05.internal [10.202.2.45]) by mailfauth.phl.internal (Postfix) with ESMTP id B39E6F40086; Thu, 16 Apr 2026 22:37:44 -0400 (EDT) Received: from phl-frontend-03 ([10.202.2.162]) by phl-compute-05.internal (MEProxy); Thu, 16 Apr 2026 22:37:44 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefhedrtddtgdegkeejtdcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpuffrtefokffrpgfnqfghnecuuegr ihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjug hrpeffhffvvefkjghfufggtgfgsehtqhertddttdejnecuhfhrohhmpeffrghnucghihhl lhhirghmshcuoegujhgsfieskhgvrhhnvghlrdhorhhgqeenucggtffrrghtthgvrhhnpe eukeejudelveetgedvueffjeeujeeuudevtefggffgheelkedvffehtdejgefhvdenucff ohhmrghinheptghonhhfihguvghnthhirghltghomhhpuhhtihhnghdrihhopdhkvghrnh gvlhdrohhrghenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhr ohhmpegujhgsfidomhgvshhmthhprghuthhhphgvrhhsohhnrghlihhthidqudejjedvfe dtgeehhedqfeeffeelgedtgeejqdgujhgsfieppehkvghrnhgvlhdrohhrghesfhgrshht mhgrihhlrdgtohhmpdhnsggprhgtphhtthhopeejpdhmohguvgepshhmthhpohhuthdprh gtphhtthhopehpsghonhiiihhnihesrhgvughhrghtrdgtohhmpdhrtghpthhtoheprhhi tghkrdhprdgvughgvggtohhmsggvsehinhhtvghlrdgtohhmpdhrtghpthhtohepkhhvmh esvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehmihgthhgrvghlrdhrohht hhesrghmugdrtghomhdprhgtphhtthhopeihihhluhhnrdiguhesihhnthgvlhdrtghomh dprhgtphhtthhopegujhgsfieskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepihhrrgdr figvihhnhiesihhnthgvlhdrtghomh X-ME-Proxy: Feedback-ID: i67ae4b3e:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 16 Apr 2026 22:37:44 -0400 (EDT) Date: Thu, 16 Apr 2026 19:37:43 -0700 From: Dan Williams To: Paolo Bonzini , "Edgecombe, Rick P" Cc: "kvm@vger.kernel.org" , "michael.roth@amd.com" , "Xu, Yilun" , "djbw@kernel.org" , "Weiny, Ira" Message-ID: <69e19cf75b5e9_147c8010018@djbw-dev.notmuch> In-Reply-To: References: <1f6e9052c0c748f023e880503ed0001a9a919599.camel@intel.com> Subject: Re: PUCK follow up: Trusted IO call details Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Paolo Bonzini wrote: > On Wed, Apr 15, 2026 at 8:59=E2=80=AFPM Edgecombe, Rick P > wrote: > > > > The call I mentioned is officially called: "TAC Subcommittee: Linux K= ernel Special Interest Group (Linux > > Kernel-SIG)". This seems to be the info: > > https://confidentialcomputing.io/about/committees/#Linux-Kernel-SIG > > > > Paolo, unfortunately I did remember correctly that it is not an EU fr= iendly time. > = > This one is friendly (9AM PST =3D 6PM CEST). The unfriendly one is the > IOMMUFD one (5AM :)). There are couple topics at present that would be suitable to raise at the EU-US friendly time. Specifically whether all of the per-arch implementations of "transport large attestation evidence blobs over shared memory from host-to-guest" would be better served with a shared generic transport (simple virtio-pipe / something equivalent for vmbus to publish). Then there are the next steps with the uapi to convey PCI device attestation that was proposed here [1], and also discussed as part of the Rust SPDM proposal [2]. [1]: http://lore.kernel.org/20260303000207.1836586-9-dan.j.williams@intel= .com [2]: http://lore.kernel.org/69976d7d39c60_2f4a1009@dwillia2-mobl4.notmuch=