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Chang S. Bae 0f6d91a327 selftests/x86/xstate: Refactor XSAVE helpers for general use
The AMX test introduced several XSAVE-related helper functions, but so
far, it has been the only user of them. These helpers can be generalized
for broader test of multiple xstate features.

Move most XSAVE-related code into xsave.h, making it shareable. The
restructuring includes:

 * Establishing low-level XSAVE helpers for saving and restoring register
  states, as well as handling XSAVE buffers.

 * Generalizing state data manipuldations: set_rand_data()

 * Introducing a generic feature query helper: get_xstate_info()

While doing so, remove unused defines in amx.c.

Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250226010731.2456-3-chang.seok.bae@intel.com
History 2025-02-26 13:05:28 +01:00
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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 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.