[PATCH 18/19] arm64: kdump: update a kernel doc

[Dave Young]

Hi, AKASHI

> >To place "elfcorehdr=" or "memmap="/"usable-memory=" into the command
> >line, one needs to know where it is valid to place it. Appending doesn't
> >always work, as per the example above with 51e158c12aca3c9a.
> 
> So, are you now suggesting that we put both "elfcorehdr=" and
> "usable-memory=" under /chosen in dtb? That's fair enough.
> (as far as nobody cares about incompatibility with other archs.)

You may need move is_kdump_kernel as a weak function so that in arm64 you
can still use it in kdump kernel.

Thanks
Dave