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For dynamically linked binaries the interpreter is responsible for setting PROT_BTI on everything except itself. The dynamic linker needs to be aware of PROT_BTI, for example in order to avoid dropping that when marking executable pages read only after doing relocations, and doing everything in userspace ensures that we don't get any issues due to divergences in behaviour between the kernel and dynamic linker within a single executable. Add a comment indicating that this is intentional to the code to help people trying to understand what's going on. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.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 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.