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The RISC-V advanced platform-level interrupt controller (APLIC) has two modes of operation: 1) Direct mode and 2) MSI mode. (For more details, refer https://github.com/riscv/riscv-aia) In APLIC MSI-mode, wired interrupts are forwared as message signaled interrupts (MSIs) to CPUs via IMSIC. Extend the existing APLIC irqchip driver to support MSI-mode for RISC-V platforms having both wired interrupts and MSIs. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Björn Töpel <bjorn@rivosinc.com> Reviewed-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20240307140307.646078-8-apatel@ventanamicro.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.