On x86_64 defconfig it's =m, so if you boot kernel without initramfs
in qemu, you will see this.

[xemul: split long line]

Fixes: #292
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>