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:
https://etallen.com/cpuid.html
The following package has been upgraded in the Cygwin distribution:
- cpuid 20260503
For changes since the previous Cygwin release, see below or
/usr/share/doc/cpuid/ChangeLog after installation.
2026-05-03 20260503
cpuid.c:
- Updated synth decoding for (0,6),(11,7),4 Bartlett Lake-S B0.
- Added synth decoding for (0,6),(11,15),6 Bartlett Lake-S H0.
- Added synth decoding for (0,6),(11,15),7 Bartlett Lake-S C0.
- Added synth decoding for (0,6),(13,7) Bartlett Lake-S, including 0=A0
stepping. Decodes E-cores in case any ever show up.
- Added synth decoding for (0,6),(13,5),1 Wildcat Lake A1.
- Added 0x8000001b/eax IBS alternate disable bit support.
- Added 0x8000001b/eax IBS fetch latency filtering support.
- Added 0x8000001b/eax IBS address bit 63 filtering support.
- Added 0x8000001b/eax IBS streaming store filtering support.
- Added 0x8000001b/eax IBS buffering v1 support.
- Added 0x8000001b/eax IBS memory profiler v1 support.
- Added 0x80000025/edx enhanced SMT protection support.
- Added 0x80000025/edx RMP dirty & RMPCHKD instruction support.
- Added 0x8000000a/ecx guest PMC event filtering supported.
- Added 0x80000025/edx RMPOPT support.
- Added 0x80000020/0/ebx GLBE: global bandwidth enforcement,
- Added 0x80000020/0/ebx GLSBE: global slow bandwidth enforcement.
- Added 0x80000020/0/ebx PLZA: privilege level zero association.
- Added 0x80000020/7 GLBE fields.
- Added 0x80000020/8 GLSBE fields.
- Added 0x80000001/ebx PkgType SP6/TR5 for Family 1A Model 02.
- Renamed 0x8000001f to AMD Secure Encryption Virtualization.
- Renamed 0x80000025 to AMD Secure Encryption Virtualization 2.
- Added uarch & synth decoding for (0,7),(6,11) Zhaoxin KaiXian KX-7000
[Century Avenue].
- Added synth decoding for (0,6),(11,7),4 Bartlett Lake.
- Added uarch & synth decoding for (8,15),(8,8) Microsoft Xbox Series
S/X (ProjectX).
- Added 0x80000021/eax bit matrix multiply & reversal instrs.
- Added 0x8000000a/ecx PML: page modification logging supported.
- Added 0x80000007/edx CPPC floor performance.
- Merged display of 0x10 (RDT) and 0x28 (RDT-A) leaf registers, because
they are identical.
- Added {0x10,0x28}/0/ebx bit 6: resource priority supported.
- Added {0x10,0x28}/6 resource priority control sub-leaves.
- Added synth decoding for (0,6),(13,7) Core 200E Bartlett Lake CPUs.
- Added preliminary synth decoding for (11,15),(8,*) Medusa Point, based
on geekbench sample.
- Changed synth decoding for (11,15),(4,0-7) to include Fire Range, the
mobile variant of Granite Ridge.
- Changed synth decoding for (10,15),(7,0-7) to include Ryzen 200. This
is Hawk Point Refresh, but the same models as original Hawk Point.
cpuid.man:
- Added intel doc 871433.
- Added Intel doc 914196.
- Added AMD 69205 doc.
- Added AMD 69204 doc.
- Added AMD 69203 doc.
- Added AMD 69202 doc.
- Added AMD 69201 doc.
- Added AMD 69193 doc.
- Added AMD 69192 doc.
- Added AMD 69208 doc.
- Added AMD 69206 doc.
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