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On platforms where MPIC is not the top-level interrupt controller the driver currently only supports handling of the per-CPU interrupts (the first 29 interrupts). This is obvious from the code of mpic_handle_cascade_irq(), which reads only one cause register. Bound the number of available interrupts in the interrupt domain to 29 for these platforms. The corresponding device-trees refer only to per-CPU interrupts via MPIC, the other interrupts are referred to via GIC. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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.