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The first version's metadata header structure doesn't include a field to indicate a header version, which is not friendly for extension. Define the metadata version 2 format with a new header structure and extend per CPU's metadata. In the meantime, the old metadata header will still be supported for backward compatibility. Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: James Clark <james.clark@linaro.org> Cc: Will Deacon <will@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Cc: Besar Wicaksono <bwicaksono@nvidia.com> Cc: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20241003184302.190806-2-leo.yan@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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.