On Wed, Feb 4, 2015 at 7:25 PM, Dave Young <dyoung@redhat.com> wrote:
>> After this patch, could use patched grub2-x86_64.efi to place
>> kernel/boot_params/cmd_line/initrd all above 4G and execute the kernel
>> above 4G.
>
> Can you share the grub2 patch for testing?

Please check attached 5 patches. last one is for debug purpose.

You need to apply them on top of

git://git.savannah.gnu.org/grub.git

plus  http://pkgs.fedoraproject.org/cgit/grub2.git/plain/0091-Add-support-for-linuxefi.patch