From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Sumit Garg <sumit.garg@oss.qualcomm.com>,
Vikash Garodia <vikash.garodia@oss.qualcomm.com>
Cc: Sumit Garg <sumit.garg@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
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>,
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>
Subject: Re: [PATCH 2/3] media: iris: Skip SCM call for non-SCM PAS backend
Date: Thu, 15 Oct 2026 11:43:19 +0200 [thread overview]
Message-ID: <9ae0c4e2-35cd-402e-96d0-eccfe26e622b@oss.qualcomm.com> (raw)
In-Reply-To: <CAGptzHN5uTR8w2b3ODHoSTcys4woRBmAf0fa=93H34ZDV+=ymw@mail.gmail.com>
On 9/18/26 1:10 PM, Sumit Garg wrote:
> Hey Vikash,
>
> On Thu, Sep 17, 2026 at 5:11 PM Vikash Garodia
> <vikash.garodia@oss.qualcomm.com> wrote:
>>
>> Hi Sumit,
>>
>> On 9/14/2026 11:44 AM, Sumit Garg wrote:
>>> Hey Konrad,
[...]
> The main disadvantage is that we don't want to carry these custom SCM
> ABIs per kernel subsystem with the open source TF-A/OP-TEE boot stack.
> ABIs always come with maintenance burdens, especially the custom ones
> we have in this case.
>
> Since we started from scratch for the open source boot stack, the
> motivation is to keep the TZ ABI minimal and that too with
> discoverable OP-TEE services like the PAS service.
Okay, I can symphatize with that.
Let's think of another solution though, as a strcmp over the provider
name is 10x worse.
What is the planned replacement on the open boot stack side? FF-A lend?
Konrad
next prev parent reply other threads:[~2026-10-15 9:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-11 12:38 [PATCH 0/3] media: qcom: Skip SCM secure memory protection with OP-TEE PAS backend Sumit Garg
2026-09-11 12:38 ` [PATCH 1/3] firmware: qcom: pas: Expose the active PAS backend name Sumit Garg
2026-09-11 12:38 ` [PATCH 2/3] media: iris: Skip SCM call for non-SCM PAS backend Sumit Garg
2026-09-11 14:24 ` Konrad Dybcio
2026-09-14 6:14 ` Sumit Garg
2026-09-17 11:41 ` Vikash Garodia
2026-09-18 11:10 ` Sumit Garg
2026-10-15 9:43 ` Konrad Dybcio [this message]
2026-10-15 14:40 ` Sumit Garg
2026-10-15 15:00 ` Sumit Garg
2026-09-11 12:38 ` [PATCH 3/3] media: venus: " Sumit Garg
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