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Since the nonstandard inline encryption support on Exynos SoCs requires that raw cryptographic keys be copied into the PRDT, it is desirable to zeroize those keys after each request to keep them from being left in memory. Therefore, add a quirk bit that enables the zeroization. We could instead do the zeroization unconditionally. However, using a quirk bit avoids adding the zeroization overhead to standard devices. Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20240708235330.103590-6-ebiggers@kernel.org Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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.