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4148575abe
Add cmpxchg_user_key() which allows to execute a compare and exchange on a user space address. This allows also to specify a storage key which makes sure that key-controlled protection is considered. This is based on a patch written by Janis Schoetterl-Glausch. Link: https://lore.kernel.org/all/20220930210751.225873-2-scgl@linux.ibm.com Cc: Janis Schoetterl-Glausch <scgl@linux.ibm.com> Link: https://lore.kernel.org/r/Y2J8axs+bcQ2dO/l@osiris Signed-off-by: Heiko Carstens <hca@linux.ibm.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.