What's the extent of support in W10/11?

[pbaykalov]

As stated here:
https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-operatingsystem
description of QuantumLength and QuantumType they are only supported until Vista while ForegroundApplicationBoost is not marked as unsupported.

[LuSlower]

the documentation is accurate, the programmer supports these functions starting with Vista/Server 2008

[eskezje]

There is KiCyclesPerClockQuantum, and then you have your quantum tables

&PspVariableQuantums_With_ShortQuantum dd 4240402h
&PspVariableQuantums dd 0C120C06h

As stated in windows internals 7 pt1
https://empyreal96.github.io/nt-info-depot/Windows-Internals-PDFs/Windows%20System%20Internals%207e%20Part%201.pdf

[pbaykalov]

@LuSlower but what is "not supported" then?