linux-kernel - Re: [PATCH 0/1] tee: Add tee_shm_register

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Message-ID: <CAFA6WYN6TdTR+O7UXe3D=5-5gRt5h7VhFYpGtyGGge-k3e_ShA@mail.gmail.com>
Date:   Fri, 12 Aug 2022 19:31:38 +0530
From:   Sumit Garg <sumit.garg@...aro.org>
To:     Olivier Masse <olivier.masse@....com>
Cc:     jens.wiklander@...aro.org, sumit.semwal@...aro.org,
        christian.koenig@....com, op-tee@...ts.trustedfirmware.org,
        linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        clement.faure@....com
Subject: Re: [PATCH 0/1] tee: Add tee_shm_register_fd

Hi Olivier,

On Thu, 11 Aug 2022 at 19:26, Olivier Masse <olivier.masse@....com> wrote:
>
> Add a new ioctl called TEE_IOC_SHM_REGISTER_FD to register a
> shared memory from a dmabuf file descriptor.
>

IIRC, here you are trying to fill the gap for OP-TEE SDP use-case. But
the use-case should be described here, its current status with OP-TEE
upstream and which platform you have tested this interface with?

-Sumit

> Etienne Carriere (1):
>   tee: new ioctl to a register tee_shm from a dmabuf file descriptor
>
>  drivers/tee/tee_core.c   | 38 +++++++++++++++
>  drivers/tee/tee_shm.c    | 99 +++++++++++++++++++++++++++++++++++++++-
>  include/linux/tee_drv.h  | 11 +++++
>  include/uapi/linux/tee.h | 29 ++++++++++++
>  4 files changed, 175 insertions(+), 2 deletions(-)
>
> --
> 2.25.0
>