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805f13e403
Add arch_stack_walk_reliable(), which will be used during kernel live patching to detect when threads have completed executing old versions of functions. Note that arch_stack_walk_reliable() only needs to guarantee that it returns an error code when it cannot provide a reliable stacktrace. It is not required to provide a reliable stacktrace in all scenarios so long as it returns said error code. At present we can only reliably unwind up to an exception boundary. In future we should be able to improve this with additional data from the compiler (e.g. sframe). Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20250320171559.3423224-2-song@kernel.org [ Mark: Simplify logic, clarify commit message ] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Andrea della Porta <andrea.porta@suse.com> Cc: Breno Leitao <leitao@debian.org> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Miroslav Benes <mbenes@suse.cz> Cc: Petr Mladek <pmladek@suse.com> Cc: Song Liu <song@kernel.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20250521111000.2237470-3-mark.rutland@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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| README | ||
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.