Re: multiboot2: variable data size

[Johan Rydberg]

"bibo,mao" <address@hidden> writes:

> If kernel image is bzImage, x64 efi bootloader need switch to 32 bit
> protect mode(or real mode) from 64 bit long mode, and if kernel
> image is gzipped/plain format, efi bootloader can directly jump to
> 64-bit kernel entry address without mode switch.

My opinion is that bzImages should be avoided on EFI platforms, or the
decompress-code in Linux has to be rewritten.  

It took me a good couple of hours of debugging to find out that Linux
simply ignores the memory layout and assumes that low memory is free
to use as it likes.

~j

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