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[ Upstream commit a9d0adce69075192961f3be466c4810a21b7bc9e ] Refactor struct cpuinfo_x86 so that the vendor, family, and model fields are overlaid in a union with a 32-bit field that combines all three (together with a one byte reserved field in the upper byte). This will make it easy, cheap, and reliable to check all three values at once. See https://lore.kernel.org/r/Zgr6kT8oULbnmEXx@agluck-desk3 for why the ordering is (low-to-high bits): (vendor, family, model) [ bp: Move comments over the line, add the backstory about the particular order of the fields. ] Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240416211941.9369-2-tony.luck@intel.com Stable-dep-of: c9a4b55431e5 ("x86/cpu: Add Lunar Lake to list of CPUs with a broken MONITOR implementation") Signed-off-by: Sasha Levin <sashal@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 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.