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The kernel pages used by shm_get_kernel_pages() are allocated using GFP_KERNEL through the following call stack: trusted_instantiate() trusted_payload_alloc() -> GFP_KERNEL <trusted key op> tee_shm_register_kernel_buf() register_shm_helper() shm_get_kernel_pages() Where <trusted key op> is one of: trusted_key_unseal() trusted_key_get_random() trusted_key_seal() Remove the vmalloc page support from shm_get_kernel_pages(). Replace with a warn on once. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
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 Restructured Text 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.