Intel Extensible Firmware Interface - Stall()

Extensible Firmware Interface Specification
100 12/12/00 Version 1.02
3.8.3 Stall()
Summary
Induces a fine-grained stall.
Prototype
EFI_STATUS
Stall (
IN UINTN Microseconds
)
Parameters
Microseconds The number of microseconds to stall execution.
Description
The Stall() function stalls execution on the processor for at least the requested number of
microseconds. Execution of the processor is not yielded for the duration of the stall.
Status Codes Returned
EFI_SUCCESS Execution was stalled at least the requested number of
Microseconds.