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Arnd Bergmann ca5955dd5f x86/cpu: Document CONFIG_X86_INTEL_MID as 64-bit-only
The X86_INTEL_MID code was originally introduced for the 32-bit
Moorestown/Medfield/Clovertrail platform, later the 64-bit
Merrifield/Moorefield variants were added, but the final Morganfield
14nm platform was canceled before it hit the market.

To help users understand what the option actually refers to, update the
help text, and add a dependency on 64-bit kernels.

Ferry confirmed that all the hardware can run 64-bit kernels these days,
but is still testing 32-bit kernels on the Intel Edison board, so this
remains possible, but is guarded by a CONFIG_EXPERT dependency now,
to gently push remaining users towards using CONFIG_64BIT.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Shevchenko <andy@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250226213714.4040853-9-arnd@kernel.org
History 2025-02-27 11:22:07 +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.