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Allocate a task flag used to represent the patch pending state for the task. When a livepatch is being loaded or unloaded, the livepatch code uses this flag to select the proper version of a being patched kernel functions to use for current task. In arch/arm64/Kconfig, select HAVE_LIVEPATCH and include proper Kconfig. This is largely based on [1] by Suraj Jitindar Singh. [1] https://lore.kernel.org/all/20210604235930.603-1-surajjs@amazon.com/ Cc: Suraj Jitindar Singh <surajjs@amazon.com> Cc: Torsten Duwe <duwe@suse.de> Acked-by: Miroslav Benes <mbenes@suse.cz> Tested-by: Breno Leitao <leitao@debian.org> Tested-by: Andrea della Porta <andrea.porta@suse.com> Signed-off-by: Song Liu <song@kernel.org> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20250630174502.842486-1-song@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 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.