linux-kernel - Re: [PATCH v3] firmware: arm_scmi: support optee shared memory in optee transport

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Date:   Wed, 27 Apr 2022 08:16:58 +0200
From:   Etienne Carriere <etienne.carriere@...aro.org>
To:     Cristian Marussi <cristian.marussi@....com>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Sudeep Holla <sudeep.holla@....com>,
        Vincent Guittot <vincent.guittot@...aro.org>
Subject: Re: [PATCH v3] firmware: arm_scmi: support optee shared memory in
 optee transport

On Tue, 26 Apr 2022 at 18:48, Cristian Marussi <cristian.marussi@....com> wrote:
>
> On Mon, Apr 25, 2022 at 10:51:27AM +0200, Etienne Carriere wrote:
> > Adds support for tee shared memory in optee scmi transport. When using
> > tee shared memory, scmi optee transport manages SCMI messages using
> > msg protocol (from msg.c) in shared memory, whereas smt (from shmem.c)
> > protocol is used with static IOMEM shared buffers.
> >
> > Signed-off-by: Etienne Carriere <etienne.carriere@...aro.org>
> > ---
> > Changes since v2:
> > - Select configuration switch ARM_SCMI_HAVE_MSG when
> >   ARM_SCMI_TRANSPORT_OPTEE is enabled.
> > - Don't consider tee_shm in invoke_process_smt_channel() since
> >   this function now assumes TEE shared memory is not used for SMT
> >   based channel.
> >
> > Changes since v1:
> > - Remove call to scmi_rx_callback() in scmi_optee_send_message().
> > ---
>
> LGTM
>
> Reviewed-by: Cristian Marussi <cristian.marussi@....com>
>
> Thanks,

Thanks for the help.

br,
etienne

> Cristian
>