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 9DFB3136E30; Wed, 27 Mar 2024 15:32:14 +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=1711553534; cv=none; b=EgUYA6ufWyuBy0FKGm1i7+QEHDSwsVOuulPCRFXnfRFCVGKt3ZAzdtD/rWx6I8lKhESf9DaKW0TBhHZvgbyjRKA5jpkLWUIlxT/pDhUbVbZZkxtW5vW6SOESatuSG0d5jH5vLA2p7BJWTTU2luBxu+ryE6rohmhuQbvov8ZmWeo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711553534; c=relaxed/simple; bh=fEZXobeh9Qm14atTzQRk5gNLt2hyN44gGXIHb89n/fM=; h=Mime-Version:Content-Type:Date:Message-Id:Cc:Subject:From:To: References:In-Reply-To; b=TFlpMMuzmniuG7jCghBX8eaMf4MRlV6UXD/ydJds6hIcPcw3jrDe9bJ8U5GxCCV1RntnjtgsdBYKg7+D50QwuYomyShfEM2sCM8zt1lY2/u23XCeHm/vXpXWgX6R8n7duhmA5WyCCSNbG0y81f4g0snZHrYUUteD4MOUV06+P1E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nPlsBFY2; 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="nPlsBFY2" 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== Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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: Cc: "Shawn Guo" , "Jonathan Corbet" , "Sascha Hauer" , "Pengutronix Kernel Team" , "Fabio Estevam" , "NXP Linux Team" , "Ahmad Fatoum" , "sigma star Kernel Team" , "David Howells" , "Li Yang" , "Paul Moore" , "James Morris" , "Serge E. Hallyn" , "Paul E. McKenney" , "Randy Dunlap" , "Catalin Marinas" , "Rafael J. Wysocki" , "Tejun Heo" , "Steven Rostedt (Google)" , , , , , , , , , "Richard Weinberger" , "David Oberhollenzer" 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> 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