From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Sumit Garg <sumit.garg@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Vikash Garodia <vikash.garodia@oss.qualcomm.com>,
Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Bryan O'Donoghue <bod@kernel.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org,
Jorge Ramirez-Ortiz <jorge.ramirez@oss.qualcomm.com>,
Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@gmail.com>,
Sumit Garg <sumit.garg@oss.qualcomm.com>
Subject: Re: [PATCH v2 1/3] firmware: qcom: pas: Add optional video memory protection op
Date: Tue, 27 Oct 2026 16:58:38 +0100 [thread overview]
Message-ID: <9a299c47-a92b-4086-8218-3f6a06a25460@oss.qualcomm.com> (raw)
In-Reply-To: <20261027-pas-video-v2-1-5b52bca5add6@oss.qualcomm.com>
On 10/27/26 1:39 PM, Sumit Garg wrote:
> From: Sumit Garg <sumit.garg@oss.qualcomm.com>
>
> qcom_scm_mem_protect_video_var() is only serviced by the SCM backend.
> Other PAS backends, e.g. OP-TEE, own secure memory protection and don't
> implement such a call.
>
> Add an optional mem_protect_video_var() PAS op along with a generic
> qcom_pas_mem_protect_video_var() wrapper so that clients stay agnostic
> of the active backend. The SCM backend maps it to the existing SCM call
> while backends leaving it unset turn it into a no-op.
>
> Signed-off-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
> ---
I agree it's imperfect but it fits better
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-10-27 15:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-27 12:39 [PATCH v2 0/3] media: qcom: Skip SCM secure memory protection with OP-TEE PAS backend Sumit Garg
2026-10-27 12:39 ` [PATCH v2 1/3] firmware: qcom: pas: Add optional video memory protection op Sumit Garg
2026-10-27 15:58 ` Konrad Dybcio [this message]
2026-10-27 12:39 ` [PATCH v2 2/3] media: qcom: Use PAS API for video memory protection Sumit Garg
2026-10-27 15:59 ` Konrad Dybcio
2026-10-27 12:39 ` [PATCH v2 3/3] firmware: qcom: scm: Drop export of qcom_scm_mem_protect_video_var() Sumit Garg
2026-10-27 15:59 ` Konrad Dybcio
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=9a299c47-a92b-4086-8218-3f6a06a25460@oss.qualcomm.com \
--to=konrad.dybcio@oss.qualcomm.com \
--cc=abhinav.kumar@linux.dev \
--cc=andersson@kernel.org \
--cc=bod@kernel.org \
--cc=dikshita.agarwal@oss.qualcomm.com \
--cc=jorge.ramirez.ortiz@gmail.com \
--cc=jorge.ramirez@oss.qualcomm.com \
--cc=konradybcio@kernel.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mchehab@kernel.org \
--cc=sumit.garg@kernel.org \
--cc=sumit.garg@oss.qualcomm.com \
--cc=vikash.garodia@oss.qualcomm.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
all inboxes | Powered by JetHome®