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[ Upstream commit c97bf629963e52b205ed5fbaf151e5bd342f9c63 ] For now, we use stop_machine() to patch the text and when we use IPIs for remote icache flushes (which is emitted in patch_text_nosync()), the system hangs. So instead, make sure every CPU executes the stop_machine() patching function and emit a local icache flush there. Co-developed-by: Björn Töpel <bjorn@rivosinc.com> Signed-off-by: Björn Töpel <bjorn@rivosinc.com> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Reviewed-by: Andrea Parri <parri.andrea@gmail.com> Link: https://lore.kernel.org/r/20240229121056.203419-3-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Stable-dep-of: 13134cc94914 ("riscv: kprobes: Fix incorrect address calculation") Signed-off-by: Sasha Levin <sashal@kernel.org>
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.