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We see different numbers (1/2) of L3 unified caches reported when running coreinfo.exe under Windows 2022+ vs Windows 2019. I've included the common output and then an abridged output of the cache information corresponding to the OS version.
192 vCPU VM (KVM virtualization)
Coreinfo v3.6 - Dump information on system CPU and memory topology
Copyright (C) 2008-2022 Mark Russinovich
Sysinternals - www.sysinternals.com
INTEL(R) XEON(R) PLATINUM 8581C CPU @ 2.30GHz
Intel64 Family 6 Model 207 Stepping 2, GenuineIntel
Microcode signature: FFFFFFFF
HTT * Hyperthreading enabled
CET - Supports Control Flow Enforcement Technology
Kernel CET - Kernel-mode CET Enabled
User CET - User-mode CET Allowed
HYPERVISOR * Hypervisor is present
VMX - Supports Intel hardware-assisted virtualization
SVM - Supports AMD hardware-assisted virtualization
X64 * Supports 64-bit mode
SMX - Supports Intel trusted execution
SKINIT - Supports AMD SKINIT
SGX - Supports Intel SGX
NX * Supports no-execute page protection
SMEP * Supports Supervisor Mode Execution Prevention
SMAP * Supports Supervisor Mode Access Prevention
PAGE1GB * Supports 1 GB large pages
PAE * Supports > 32-bit physical addresses
PAT * Supports Page Attribute Table
PSE * Supports 4 MB pages
PSE36 * Supports > 32-bit address 4 MB pages
PGE * Supports global bit in page tables
SS * Supports bus snooping for cache operations
VME * Supports Virtual-8086 mode
RDWRFSGSBASE * Supports direct GS/FS base access
FPU * Implements i387 floating point instructions
MMX * Supports MMX instruction set
MMXEXT - Implements AMD MMX extensions
3DNOW - Supports 3DNow! instructions
3DNOWEXT - Supports 3DNow! extension instructions
SSE * Supports Streaming SIMD Extensions
SSE2 * Supports Streaming SIMD Extensions 2
SSE3 * Supports Streaming SIMD Extensions 3
SSSE3 * Supports Supplemental SIMD Extensions 3
SSE4a - Supports Streaming SIMDR Extensions 4a
SSE4.1 * Supports Streaming SIMD Extensions 4.1
SSE4.2 * Supports Streaming SIMD Extensions 4.2
AES * Supports AES extensions
AVX * Supports AVX instruction extensions
AVX2 * Supports AVX2 instruction extensions
AVX-512-F * Supports AVX-512 Foundation instructions
AVX-512-DQ * Supports AVX-512 double and quadword instructions
AVX-512-IFAMA * Supports AVX-512 integer Fused multiply-add instructions
AVX-512-PF - Supports AVX-512 prefetch instructions
AVX-512-ER - Supports AVX-512 exponential and reciprocal instructions
AVX-512-CD * Supports AVX-512 conflict detection instructions
AVX-512-BW * Supports AVX-512 byte and word instructions
AVX-512-VL * Supports AVX-512 vector length instructions
FMA * Supports FMA extensions using YMM state
MSR * Implements RDMSR/WRMSR instructions
MTRR * Supports Memory Type Range Registers
XSAVE * Supports XSAVE/XRSTOR instructions
OSXSAVE * Supports XSETBV/XGETBV instructions
RDRAND * Supports RDRAND instruction
RDSEED * Supports RDSEED instruction
CMOV * Supports CMOVcc instruction
CLFSH * Supports CLFLUSH instruction
CX8 * Supports compare and exchange 8-byte instructions
CX16 * Supports CMPXCHG16B instruction
BMI1 * Supports bit manipulation extensions 1
BMI2 * Supports bit manipulation extensions 2
ADX * Supports ADCX/ADOX instructions
DCA - Supports prefetch from memory-mapped device
F16C * Supports half-precision instruction
FXSR * Supports FXSAVE/FXSTOR instructions
FFXSR - Supports optimized FXSAVE/FSRSTOR instruction
MONITOR * Supports MONITOR and MWAIT instructions
MOVBE * Supports MOVBE instruction
ERMSB * Supports Enhanced REP MOVSB/STOSB
PCLMULDQ * Supports PCLMULDQ instruction
POPCNT * Supports POPCNT instruction
LZCNT * Supports LZCNT instruction
SEP * Supports fast system call instructions
LAHF-SAHF * Supports LAHF/SAHF instructions in 64-bit mode
HLE * Supports Hardware Lock Elision instructions
RTM * Supports Restricted Transactional Memory instructions
DE * Supports I/O breakpoints including CR4.DE
DTES64 - Can write history of 64-bit branch addresses
DS - Implements memory-resident debug buffer
DS-CPL - Supports Debug Store feature with CPL
PCID * Supports PCIDs and settable CR4.PCIDE
INVPCID * Supports INVPCID instruction
PDCM - Supports Performance Capabilities MSR
RDTSCP * Supports RDTSCP instruction
TSC * Supports RDTSC instruction
TSC-DEADLINE - Local APIC supports one-shot deadline timer
TSC-INVARIANT * TSC runs at constant rate
xTPR - Supports disabling task priority messages
EIST - Supports Enhanced Intel Speedstep
ACPI - Implements MSR for power management
TM - Implements thermal monitor circuitry
TM2 - Implements Thermal Monitor 2 control
APIC * Implements software-accessible local APIC
x2APIC * Supports x2APIC
CNXT-ID - L1 data cache mode adaptive or BIOS
MCE * Supports Machine Check, INT18 and CR4.MCE
MCA * Implements Machine Check Architecture
PBE - Supports use of FERR#/PBE# pin
PSN - Implements 96-bit processor serial number
PREFETCHW * Supports PREFETCHW instruction
Maximum implemented CPUID leaves: 00000020 (Basic), 80000008 (Extended).
Maximum implemented address width: 57 bits (virtual), 52 bits (physical).
Processor signature: 000C06F2
Summary
We see different numbers (1/2) of L3 unified caches reported when running coreinfo.exe under Windows 2022+ vs Windows 2019. I've included the common output and then an abridged output of the cache information corresponding to the OS version.
192 vCPU VM (KVM virtualization)
2019
2022
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