From: Jarkko Sakkinen <jarkko@kernel.org>
To: Stuart Yoder <stuart.yoder@arm.com>
Cc: linux-integrity@vger.kernel.org, peterhuewe@gmx.de, jgg@ziepe.ca,
sudeep.holla@arm.com, Prachotan.Bathi@arm.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] tpm_crb: Add idle support for the Arm FF-A start method
Date: Mon, 27 Oct 2025 22:06:17 +0200 [thread overview]
Message-ID: <aP_QuU3QMAYl4yoG@kernel.org> (raw)
In-Reply-To: <20251024174200.1974090-1-stuart.yoder@arm.com>
On Fri, Oct 24, 2025 at 12:42:00PM -0500, Stuart Yoder wrote:
> According to the CRB over FF-A specification [1], a TPM that implements
> the ABI must comply with the TCG PTP specification. This requires support
> for the Idle and Ready states.
>
> This patch implements CRB control area requests for goIdle and
> cmdReady on FF-A based TPMs.
>
> The FF-A message used to notify the TPM of CRB updates includes a
> locality parameter, which provides a hint to the TPM about which
> locality modified the CRB. This patch adds a locality parameter
> to __crb_go_idle() and __crb_cmd_ready() to support this.
>
> [1] https://developer.arm.com/documentation/den0138/latest/
>
> Signed-off-by: Stuart Yoder <stuart.yoder@arm.com>
A version of this went already to rc2.
BR, Jarkko
prev parent reply other threads:[~2025-10-27 20:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-24 17:42 [PATCH v2] tpm_crb: Add idle support for the Arm FF-A start method Stuart Yoder
2025-10-27 20:06 ` Jarkko Sakkinen [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aP_QuU3QMAYl4yoG@kernel.org \
--to=jarkko@kernel.org \
--cc=Prachotan.Bathi@arm.com \
--cc=jgg@ziepe.ca \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peterhuewe@gmx.de \
--cc=stuart.yoder@arm.com \
--cc=sudeep.holla@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox