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efi: efivars: limit availability to X86 builds

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CONFIG_EFI_VARS controls the code that exposes EFI variables via
sysfs entries, which was deprecated before support for non-Intel
architectures was added to EFI. So let's limit its availability
to Intel architectures for the time being, and hopefully remove
it entirely in the not too distant future.

While at it, let's remove the module alias so that the module is
no longer loaded automatically.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel
2020-09-23 10:20:10 +02:00
parent 5ee70cd606
commit 963fabf37f
3 changed files with 5 additions and 11 deletions
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Documentation/arm/uefi.rst
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@@ -23,7 +23,7 @@ makes it possible for the kernel to support additional features:
For actually enabling [U]EFI support, enable:
- CONFIG_EFI=y
- CONFIG_EFI_VARS=y or m
- CONFIG_EFIVAR_FS=y or m
The implementation depends on receiving information about the UEFI environment
in a Flattened Device Tree (FDT) - so is only available with CONFIG_OF.