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216e04bf1e
ZONE_DEVICE pages need DEVMAP PTEs support to function (ARCH_HAS_PTE_DEVMAP). Claim another RSW (reserved for software) bit in the PTE for DEVMAP mark, add the corresponding helpers, and enable ARCH_HAS_PTE_DEVMAP for riscv64. Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20240605114100.315918-11-bjorn@kernel.org 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 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.