From: "Jarkko Sakkinen" <jarkko@kernel.org>
To: "Samuel Ortiz" <sameo@rivosinc.com>,
"Dan Williams" <dan.j.williams@intel.com>
Cc: "Kuppuswamy Sathyanarayanan"
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Qinkun Bao" <qinkun@google.com>,
"Yao, Jiewen" <jiewen.yao@intel.com>,
"Xing, Cedric" <cedric.xing@intel.com>,
"Dionna Amalie Glaze" <dionnaglaze@google.com>,
<biao.lu@intel.com>, <linux-coco@lists.linux.dev>,
<linux-integrity@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH v2 0/4] tsm: Runtime measurement registers ABI
Date: Fri, 02 Feb 2024 00:02:42 +0200 [thread overview]
Message-ID: <CYU2YB3KWV7V.1NHLFEN71HC3N@suppilovahvero> (raw)
In-Reply-To: <20240128212532.2754325-1-sameo@rivosinc.com>
On Sun Jan 28, 2024 at 11:25 PM EET, Samuel Ortiz wrote:
> Some confidential computing architectures (Intel TDX, ARM CCA, RISC-V
> CoVE) provide their guests with a set of measurements registers that can
> be extended at runtime, i.e. after the initial, host-initiated
> measurements of the TVM are finalized. Those runtime measurement
> registers (RTMR) are isolated from the host accessible ones but TSMs
> include them in their signed attestation reports.
Please expand "TSM" acronym and explain what it is.
> All architectures supporting RTMRs expose a similar interface to their
Please expand RTMR *everywhere* ot "measurement registers". It is
totally useless terminology.
> TVMs: An extension command/call that takes a measurement value and an
What is TVM?
> RTMR index to extend it with, and a readback command for reading an RTMR
> value back (taking an RTMR index as an argument as well). This patch series
> builds an architecture agnostic, configfs-based ABI for userspace to extend
> and read RTMR values back. It extends the current TSM ops structure and
> each confidential computing architecture can implement this extension to
> provide RTMR support.
This patch set should simplify its gibberish terminology to common
language.
BR, Jarkko
next prev parent reply other threads:[~2024-02-01 22:02 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-28 21:25 [RFC PATCH v2 0/4] tsm: Runtime measurement registers ABI Samuel Ortiz
2024-01-28 21:25 ` [RFC PATCH v2 1/4] tsm: Runtime measurement register support Samuel Ortiz
2024-01-29 16:57 ` Dionna Amalie Glaze
2024-02-01 22:03 ` Jarkko Sakkinen
2024-01-28 21:25 ` [RFC PATCH v2 2/4] tsm: Add RTMRs to the configfs-tsm hierarchy Samuel Ortiz
2024-01-28 22:38 ` Kuppuswamy Sathyanarayanan
2024-02-01 22:05 ` Jarkko Sakkinen
2024-02-21 16:16 ` Mikko Ylinen
2024-01-28 21:25 ` [RFC PATCH v2 3/4] tsm: Map RTMRs to TCG TPM PCRs Samuel Ortiz
2024-01-28 22:44 ` Kuppuswamy Sathyanarayanan
2024-02-02 6:18 ` James Bottomley
2024-01-28 21:25 ` [RFC PATCH v2 4/4] tsm: Allow for extending and reading configured RTMRs Samuel Ortiz
2024-02-01 22:02 ` Jarkko Sakkinen [this message]
2024-02-02 6:24 ` [RFC PATCH v2 0/4] tsm: Runtime measurement registers ABI James Bottomley
2024-02-02 23:07 ` Dan Middleton
2024-02-03 6:03 ` James Bottomley
2024-02-03 7:13 ` Kuppuswamy Sathyanarayanan
2024-02-03 10:27 ` James Bottomley
2024-02-06 8:34 ` Xing, Cedric
2024-02-06 8:57 ` James Bottomley
2024-02-07 2:02 ` Dan Williams
2024-02-07 20:16 ` Xing, Cedric
2024-02-07 21:08 ` Kuppuswamy Sathyanarayanan
2024-02-07 21:46 ` James Bottomley
2024-02-09 20:58 ` Dan Williams
2024-02-13 7:36 ` Xing, Cedric
2024-02-13 16:05 ` James Bottomley
2024-02-14 8:54 ` Xing, Cedric
2024-02-15 6:14 ` Dan Williams
2024-02-16 2:05 ` Xing, Cedric
2024-03-05 1:19 ` Xing, Cedric
2024-04-17 20:23 ` Dan Middleton
2024-02-13 16:54 ` Mikko Ylinen
2024-02-15 22:44 ` Dr. Greg
2024-02-22 15:45 ` Lukas Wunner
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