Re: [PATCH] efi: add efi_runtime state checking

[H. Peter Anvin]

On 06/27/2012 02:35 PM, Olof Johansson wrote:
> This adds an efi_runtime variable indicating whether the
> efi runtime services are available. The only time they are
> expected to not be available is when a 32-bit kernel has been
> booted using 64-but EFI and vice versa.
>
> It also adds checking to the two locations where functions are
> called; x86 reboot and efivars.

OK, stupid question:

Why is this different from the efi_enabled variable, or rather: why is 
it different from what the efi_enabled variable *should* be?  If runtime 
services aren't available the only "EFI" that is available to the kernel 
are the data structures passed in, and those can be checked directly...

	-hpa


--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.



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