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.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 A6D92C47DD9 for ; Wed, 27 Mar 2024 15:35:14 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=nPlsBFY2; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4V4W2T2dM4z3vpN for ; Thu, 28 Mar 2024 02:35:13 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=nPlsBFY2; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=145.40.73.55; helo=sin.source.kernel.org; envelope-from=jarkko@kernel.org; receiver=lists.ozlabs.org) Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) (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 lists.ozlabs.org (Postfix) with ESMTPS id 4V4Vz53mtSz3vqW for ; Thu, 28 Mar 2024 02:32:17 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 27D52CE26F2; Wed, 27 Mar 2024 15:32:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEE57C433F1; Wed, 27 Mar 2024 15:32:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711553534; bh=fEZXobeh9Qm14atTzQRk5gNLt2hyN44gGXIHb89n/fM=; h=Date:Cc:Subject:From:To:References:In-Reply-To:From; b=nPlsBFY2n75dYGZ/PvNEhdIEQboMUhNLh40mqEb8TvuGyF35dXMgWppBhFyu+DaZU ylw13U+FHygPCroJKf5ogRik2RJXXAo6BzC4xMkd+eL3TtykJGJcpSxIYOrd5JfZ4Y 8Y8qHCxPgrh0+z9Y0+fExYRjsYz/5+6qM/onpALTNfCcda32LPapgP982blQpcPUJ0 PESC9mSpaIt5UG2W2WsmRS5QvWWmQTovnQStsAcTe1rNhr773paC376WrEOpH6fUEs tCWOo6vvAF042rg+UD6uUfR/JDE+OECQGmYLPoM8ewWd3eaNvPhrUprFH/PwIELqFV toaX7mq5W0yjA== Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 27 Mar 2024 17:32:06 +0200 Message-Id: Subject: Re: [PATCH v7 5/6] docs: document DCP-backed trusted keys kernel params From: "Jarkko Sakkinen" To: "David Gstir" , "Mimi Zohar" , "James Bottomley" , "Herbert Xu" , "David S. Miller" X-Mailer: aerc 0.17.0 References: <20240327082454.13729-1-david@sigma-star.at> <20240327082454.13729-6-david@sigma-star.at> In-Reply-To: <20240327082454.13729-6-david@sigma-star.at> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-doc@vger.kernel.org, Catalin Marinas , David Howells , keyrings@vger.kernel.org, Fabio Estevam , Ahmad Fatoum , Paul Moore , Jonathan Corbet , Richard Weinberger , "Rafael J. Wysocki" , James Morris , NXP Linux Team , "Serge E. Hallyn" , "Paul E. McKenney" , Sascha Hauer , sigma star Kernel Team , "Steven Rostedt \(Google\)" , David Oberhollenzer , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Randy Dunlap , linux-kernel@vger.kernel.org, Li Yang , linux-security-module@vger.kernel.org, linux-crypto@vger.kernel.org, Pengutronix Kernel Team , Tejun Heo , linux-integrity@vger.kernel.org, Shawn Guo Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed Mar 27, 2024 at 10:24 AM EET, David Gstir wrote: > Document the kernel parameters trusted.dcp_use_otp_key > and trusted.dcp_skip_zk_test for DCP-backed trusted keys. > > Co-developed-by: Richard Weinberger > Signed-off-by: Richard Weinberger > Co-developed-by: David Oberhollenzer > Signed-off-by: David Oberhollenzer > Signed-off-by: David Gstir > --- > Documentation/admin-guide/kernel-parameters.txt | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentat= ion/admin-guide/kernel-parameters.txt > index 24c02c704049..b6944e57768a 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -6698,6 +6698,7 @@ > - "tpm" > - "tee" > - "caam" > + - "dcp" > If not specified then it defaults to iterating through > the trust source list starting with TPM and assigns the > first trust source as a backend which is initialized > @@ -6713,6 +6714,18 @@ > If not specified, "default" is used. In this case, > the RNG's choice is left to each individual trust source. > =20 > + trusted.dcp_use_otp_key > + This is intended to be used in combination with > + trusted.source=3Ddcp and will select the DCP OTP key > + instead of the DCP UNIQUE key blob encryption. > + > + trusted.dcp_skip_zk_test > + This is intended to be used in combination with > + trusted.source=3Ddcp and will disable the check if all > + the blob key is zero'ed. This is helpful for situations where > + having this key zero'ed is acceptable. E.g. in testing > + scenarios. > + > tsc=3D Disable clocksource stability checks for TSC. > Format: > [x86] reliable: mark tsc clocksource as reliable, this Nicely documented, i.e. even I can understand what is said here :-) Reviewed-by: Jarkko Sakkinen BR, Jarkko