FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 0166dc11be911213e0b1b764488c671be4c48cf3 ("of: make CONFIG_OF user selectable")

The following new message in kernel log may make end user confusing:

[   13.474989] Failed to find cpu0 device node
[   13.474989] Failed to find cpu0 device node
[   13.475977] Unable to detect cache hierarcy from DT for CPU 0
[   13.475977] Unable to detect cache hierarcy from DT for CPU 0

The test is run in qemu i386.

Thanks,
Ying Huang