>
> Can OsIndicationsSupported UEFI variable provide the similar functionality?
>

Similar, but not the same. If we use a UEFI variable, its value will
persist across boots. This can be fine if you only boot one OS, but if
you have two where one supports unaccepted memory and the other
doesn't then you have a problem.
The protocol here is specific to the code that will be calling
ExitBootServices, and thus won't mess up another OS once we reboot and
select it.

-- 
-Dionna Glaze, PhD (she/her)


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