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22cd5edb2d
Because of the tagged addresses, the __is_lm_address() and __lm_to_phys() macros grew to some harder to understand bitwise operations using PAGE_OFFSET. Since these macros only accept untagged addresses, use a simple subtract operation. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20210201190634.22942-3-catalin.marinas@arm.com |
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| include | ||
| init | ||
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| README | ||
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.