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dbd82fee0f
In preparation to bigger changes to arm64_relocate_new_kernel that would
enable this function to do MMU backed memory copy, do few clean-ups and
optimizations. These include:
1. Call raw_dcache_line_size() only when relocation is actually going to
happen. i.e. kdump type kexec, does not need it.
2. copy_page(dest, src, tmps...) increments dest and src by PAGE_SIZE, so
no need to store dest prior to calling copy_page and increment it
after. Also, src is not used after a copy, not need to copy either.
3. For consistency use comment on the same line with instruction when it
describes the instruction itself.
4. Some comment corrections
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Link: https://lore.kernel.org/r/20210125191923.1060122-12-pasha.tatashin@soleen.com
Signed-off-by: Will Deacon <will@kernel.org>
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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.