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We typically enable support in defconfig for all architectural features for which we can detect at runtime if the hardware actually supports them. Now that we have implemented support for LPA2 based 52-bit virtual addressing in a way that should not impact 48-bit operation on non-LPA2 CPU, we can do the same, and enable 52-bit virtual addressing by default. Catalin adds: Currently the "Virtual address space size" arch/arm64/Kconfig menu entry sets different defaults for each page size. However, all are overridden by the defconfig to 48 bits. Set the new default in Kconfig and remove the defconfig line. [ardb: squash follow-up fix from Catalin] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20240214122845.2033971-86-ardb+git@google.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.
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.