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Some RISC-V systems include PCIe host controllers that support PCIe message-signaled interrupts. For this to work on Linux, we need to enable PCI_MSI_IRQ_DOMAIN and define struct msi_alloc_info. Support for the latter is enabled by including the architecture-generic msi.h include. Signed-off-by: Wesley Terpstra <wesley@sifive.com> [paul.walmsley@sifive.com: split initial patch into one arch/riscv patch and one drivers/pci patch] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.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.