[PATCH] arm64: kaslr: don't pretend KASLR is enabled if offset < MIN_KIMG_ALIGN

[Mark Brown]

On Thu, Feb 23, 2023 at 09:41:01PM +0100, Ard Biesheuvel wrote:

> This means that a KASLR offset of less than 2 MiB is simply the product
> of this physical displacement, and no randomization has actually taken
> place. Currently, we use 'kaslr_offset() > 0' to decide whether or not
> randomization has occurred, and so we misidentify this case.

Making an explicit function to check if we've enabled KASLR is also a
nice cleanup in itself.

Reviewed-by: Mark Brown <broonie at kernel.org>
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