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Arm v8 architecture supports multiple page sizes - 4k, 16k and 64k. Based on the active page size, the Linux port supports corresponding hugepage sizes at PMD and PUD(4k only) levels. In addition, the architecture also supports caching larger sized ranges (composed of multiple entries) at the PTE and PMD level in the TLBs using the contiguous bit. The Linux port makes use of this architectural support to enable additional hugepage sizes. Describe the two different types of hugepages supported by the arm64 kernel and the hugepage sizes enabled by each. Acked-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.