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c45fc916c2
The PLIC specification does not describe the interrupt pendings bits as read-write, only that they "can be read". To allow for retriggering of interrupts (and the use of the irq debugfs interface) enable HARDIRQS_SW_RESEND for RISC-V. Link: https://github.com/riscv/riscv-plic-spec/blob/master/riscv-plic.adoc#interrupt-pending-bits Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Marc Zyngier <maz@kernel.org> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Tested-by: Palmer Dabbelt <palmer@rivosinc.com> # on QEMU Reviewed-by: Björn Töpel <bjorn@kernel.org> Link: https://lore.kernel.org/r/20220729111116.259146-1-conor.dooley@microchip.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.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 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.