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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.