kexec, x86: put ramdisk/cmd_line above 4G for 64bit bzImage

We could put ramdisk/cmdline above for bzImage on 64bit for protocol 2.12.

-v2: change ext_... handling to way that eric like.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
2 files changed