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SubjectRe: [PATCH 5/5] x86_64 EFI support -v3: EFI document
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>
> This is the classic skip the 16bit code and enter the kernel
> in 32bit mode filling in the fields that the 16bit mode code would
> have filled in the same way approach.

kexec can use it because it's in tree.

But I don't think using it by out of tree stuff is a good idea.

e.g. assuming we need a new field. How would we extend this?
There is no version number or anything to detect this.

For in tree code it can be just updated. But weirdo-EFI-boot loader
cannot.

-Andi
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