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    SubjectRe: [EXT] Re: [PATCH v2 0/1] tee: Add tee_shm_register_fd
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    Hi Sumit

    On ven., 2022-08-19 at 13:54 +0530, Sumit Garg wrote:
    > Caution: EXT Email
    >
    > Hi Olivier,
    >
    > On Fri, 12 Aug 2022 at 20:01, Olivier Masse <olivier.masse@nxp.com>
    > 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://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstatic.linaro.org%2Fconnect%2Fsan19%2Fpresentations%2Fsan19-107.pdf&amp;data=05%7C01%7Colivier.masse%40nxp.com%7C05071ff1c28044ab740908da81bc44e2%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C1%7C637964942860947359%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=nYLb2iMoJExdKEg4CL4eW5%2FQ%2Bqqj4Iw1TxFsd1UqWW0%3D&amp;reserved=0
    > >
    > > 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?

    It has been tested with linaro,secure-heap reserved dma heap memory
    which is also in review for upstream.

    >
    > 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
    > >

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