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- 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. -----BEGIN PGP SIGNATURE----- iQJOBAABCgA4FiEE0qerISgy2SKkqO79Wr/6JGat8H4FAmjD5vIaHGplbnMud2lr bGFuZGVyQGxpbmFyby5vcmcACgkQWr/6JGat8H7nMQ//afmnhAZKFnHjCfhSuk8e u7mOCcL32+SY2R2i/OSvXzLNo6zAfpqKPjyBT5h/DEYK+bAgHSNeCNCgmmxvrKkg 3Zptyi4+kW+XPcUvAY4yT82JwhpZoR2YTnmGjDQzhLBcIlHRDHUmVblK7XUkBHUV YrCqc6HicqcqCKZT8ZWTWa/K1lfe0xvQWOJYVFN8yF867ThHimyp7XJglEsRjUUQ ygPLRZHZmMNq3Paoz3WQk4v4RDEC+VNVS8DxAvYvN75dSAn7b0v72i2Y64Ox+0BO 2RQcN+PTeHCvGBng3r6PP8gW/nbPQhtu0pCAkARK8xWkTUamWP5H/DvhgzdgO45T em9F+K4NnWtep9VtfE1dYLoe4ktyyqjmojaE+izCXOX/xtQ2V9xKyDHuPZccmLXV p9/fXLSyVEy2NUD9W4x6tkfNdnLMINLfPJzNRT8VCFqu9ebc+ldq3Gg1zCoHaFWx VaOQ9KtelfuNcRLauFy2f5mXkkzf7GKMTgvj636WZBk5fqCCnMF55JJhucV2hD28 I5vKJkfLGDPAXaEuPJut86MZ2bXXEVxhT9i05hb2qVSGocfPuLqwdrOYYJ253wL7 xUmVxWnwEMMK+JKfiMOOW5wdPxrzee6idUBUWZe3y3xqXkTnwFY8KP/CsXV2a7SE Zsm9/kcU2N7xBzHwocvCUys= =l0SR -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmjIH7kACgkQmmx57+YA GNl8kg/9Gy9WbDLCvfu6CKOT5g7Z58jF0z1RetGA92684rCDW3hZuyiAy3nHp3h5 aSkGpJd8hcbJ6S89de7XXY4u0cvFzW8bxX9Zsb7XlKilGdzR5aNs02AHqeJ1BHkV UcVH+zTB/qrg5JIH68RBD2CLDr7ScnlCa/1IgjU0rIuyilPDC/hsoGjazHV9mG0u s9ieaHedVgzruNPtAy7MZyJyehuhgGTZh8mJ6O+AN8qWVSu0EIDYNVaT3dZiG0M+ M1N7C2Hxe0RMWd95+xotnz+o/3ifuqkK5BdsuomZT5X4A2oR7rxYb3En+Wsq7/aq 7x4Gdn+8W4eULKepr3l0wLQYVKCYKxbm1R7rKnfYFDOJFZwOyH/h9H56ouO2bekE h2MsgV7lhKmMhrcAGIN9OsIz9DdPqj4n+z6lqyrCvSsWXGcKtTyTONsrzS3eKTv9 GdfpIkG9pPSlJFH1sO8OegRsolAkxUOx5P/PgdSmiGazKhnBtmFHlXXn+X56fcia kdwNEBZxiynOkGZjgvqtQWYYr2yXD2YOp00eQHI9rzj8tL38zM49aSO8DlG41rhT BK5Q1Qsr+dyCpb0/AUdz71LCAz4cKfIYGRavOpZXoNMi+9/+k+2/natLBOA4jetr wDp3LH8av435LRj/g87zI8n9d7G1NMHaRWJZzOfXquFdTlH3kYk= =z4o4 -----END PGP SIGNATURE----- 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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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.