Hi Olivier, On Fri, 12 Aug 2022 at 20:01, Olivier Masse <olivier.masse@xxxxxxx> wrote: > > Add a new ioctl called TEE_IOC_SHM_REGISTER_FD to register a > shared memory from a dmabuf file descriptor. > This new ioctl will allow the Linux Kernel to register a buffer > to be used by the Secure Data Path OPTEE OS feature. > > Please find more information here: > https://static.linaro.org/connect/san19/presentations/san19-107.pdf > > Patch tested on Hikey 6220. > AFAIU, for the OP-TEE SDP feature to work you need to have a DMA-BUF heap driver for allocating secure buffers through exposed chardev: "/dev/dma_heap/sdp". Have you tested it with some out-of-tree driver as I can't find it upstream? Also, do you plan to push that upstream as well? BTW, please add a changelog while sending newer patch-set versions. -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 >
