> From: Alexander Graf <ag...@suse.de>
> Date: Tue, 3 Jul 2018 22:08:05 +0200
> 
> It's only ever been tested on ARM, so maybe the x86 Linux EFI stub
> behaves differently. If set_virtual_address_map needs to be intact after
> exiting boot services, we need to move all of the relocation information
> and functionality into runtime sections as well.

The OpenBSD EFI bootloader calls ExitBootServices() before handing
control to the kernel.  The OpenBSD/arm64 kernel then calls
SetVirtualAddressmap().  This works, but probably because it happens
very early when the kernel is only using memory inside a 32M block
that has been allocated by the bootloader.

So yes,  I think that functionality needs to marked as __efi_runtime.

Cheers,

Mark
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