Merge tag 'tee-prot-dma-buf-for-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee into soc/drivers

TEE protected DMA-bufs for v6.18

- Allocates protected DMA-bufs from a DMA-heap instantiated from the TEE
  subsystem.
- The DMA-heap uses a protected memory pool provided by the backend TEE
  driver, allowing it to choose how to allocate the protected physical
  memory.
- Three use-cases (Secure Video Playback, Trusted UI, and Secure Video
  Recording) have been identified so far to serve as examples of what
  can be expected.
- The use-cases have predefined DMA-heap names,
  "protected,secure-video", "protected,trusted-ui", and
  "protected,secure-video-record". The backend driver registers protected
  memory pools for the use-cases it supports.

* tag 'tee-prot-dma-buf-for-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee:
  optee: smc abi: dynamic protected memory allocation
  optee: FF-A: dynamic protected memory allocation
  optee: support protected memory allocation
  tee: add tee_shm_alloc_dma_mem()
  tee: new ioctl to a register tee_shm from a dmabuf file descriptor
  tee: refactor params_from_user()
  tee: implement protected DMA-heap
  dma-buf: dma-heap: export declared functions
  optee: sync secure world ABI headers

Link: https://lore.kernel.org/r/20250912101752.GA1453408@rayden
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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