Hi,
The change may also cause some hiccups if you're using a newer version of coreboot with an older version of cbmem (or SeaBIOS or whatever else reads the console):
seabios doesn't read the log, instead it'll append its own messages. Which I expect will continue to work fine, except when it hits the end of the log buffer, where seabios will simply stop logging instead of rolling over.
cheers, Gerd