Why is the only ELF format kernel?

["Y.H. Park" <wegaia@micro-web.co.kr>]

Hi all,

I've read an article about freeing initialization date and code of the kernel.
It says Linux kernel can only be compiled as an ELF binary.
I wonder why other famous file formats can't be used.
Is ELF format the only format that is possible to free init code and data?

Thanks.
Park.


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