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Implement the following three pieces required from the JIT: - A "top-level" BPF prog (exception_boundary) must save all non-volatile registers, and not only the ones that it clobbers. - A "handler" BPF prog (exception_cb) must switch stack to that of exception_boundary, and restore the registers that exception_boundary saved. - arch_bpf_stack_walk() must unwind the stack and provide the results in a way that satisfies both bpf_throw() and exception_cb. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20240703005047.40915-3-iii@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 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.