Updated: cpuid 20240716 - displays information about the CPU(s)

Cygwin cpuid Maintainer Brian.Inglis@SystematicSW.ab.ca
Sun Jul 21 01:09:39 GMT 2024


Displays detailed information about the CPU(s) gathered from the
CPUID instruction, and also determines the exact model of CPU(s).
Where /proc/cpuinfo shows features important to a system, cpuid shows
what every feature in each CPU's architecture does.
It is updated and released frequently to stay current with Intel and
AMD information and supports other vendors' chips.

See the project home page for more information:

	http://etallen.com/cpuid.html

The following package has been upgraded in the Cygwin distribution:

* cpuid		20240716

For information about changes since the previous Cygwin release,
see below or /usr/share/doc/cpuid/ChangeLog after installation.


2024-07-16	cpuid.c

- For AMD Zen CPUs, overhauled uarch & synth decoding to determine the
  CPU model from only the extended model & high bit of the model field.
  Also, determine the stepping (revision) mechanically from the
  low-order 3 bits of the model and the stepping number.
  This should correctly identify retail Zen 5 Ryzens.
  This also corrects some stepping bugs from the Zen 1 era.



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