EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
enum EFI_ACPI_4_0_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY = 0x00;

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