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c5ac25e0d7
The prolugue unwinder rely on symbol info. When PC is not in kernel text address, it cannot find relative symbol info and it will be broken. The guess unwinder will be used in this case. And the guess unwinder code in prolugue unwinder is redundant. Strip it out and set the unwinder type in unwind_state. Make guess_unwinder::unwind_next_frame() as default way when other unwinders cannot unwind in some extreme case. Signed-off-by: Jinyang He <hejinyang@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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.