Re: [PATCH v3 1/5] tee: add sec_world_id to struct tee_shm

On Thu, 22 Jul 2021 at 17:48, Jens Wiklander jens.wiklander@linaro.org wrote:

Adds sec_world_id to struct tee_shm which describes a shared memory object. sec_world_id can be used by a driver to store an id assigned by secure world.

Signed-off-by: Jens Wiklander jens.wiklander@linaro.org

include/linux/tee_drv.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)

Reviewed-by: Sumit Garg sumit.garg@linaro.org

-Sumit

diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h index 54269e47ac9a..1a29f0e66e13 100644 --- a/include/linux/tee_drv.h +++ b/include/linux/tee_drv.h @@ -196,7 +196,11 @@ int tee_session_calc_client_uuid(uuid_t *uuid, u32 connection_method,

• @num_pages: number of locked pages
• @dmabuf: dmabuf used to for exporting to user space
• @flags: defined by TEE_SHM_* in tee_drv.h

• • @id: unique id of a shared memory object on this device

• • @id: unique id of a shared memory object on this device, shared

• •         with user space
    

• • @sec_world_id:

• •         secure world assigned id of this shared memory object, not
    

• •         used by all drivers
    

  • This pool is only supposed to be accessed directly from the TEE
  • subsystem and from drivers that implements their own shm pool manager.

@@ -212,6 +216,7 @@ struct tee_shm { struct dma_buf *dmabuf; u32 flags; int id;

•   u64 sec_world_id;
  

};

/**

2.31.1