Done! It's over! Jay Z just took the motherf-ing high road -- like the highest overpass in LA, the Michelle Obama of high roads, the stairway to heaven -- and squashed his former "feud" with Kanye West.

After Kanye dissed his mentor during a performance in November 2016 -- before heading to a full-on break down and canceling the balance of his tour -- fans were devastate by the breakup of rap's most powerful bromance. Well, it's back!

Jay Z called Kanye his "little brother" when David Letterman, on his Netflix show My Next Guest Needs No Introduction, asked the music mogul if the two were still friends. Sean Carter responded by saying, "That’s my brother, we’re beyond friends. Really, my little brother is Kanye. And like, [with] your little brother, things happen sometimes. It’s still your sibling forever, it’s my brother. We don’t come from the same mom and dad but I watched Kanye from without an album. The thing I respect about him is that he’s the same person. He interrupted our studio session and stood on the table and started rapping, and we were like, ‘Could you please get down?’ And he was like, ‘No! I am the savior of Chicago!’ He didn’t have a record."

Jay went on to call Kanye "brilliant." BAM!

And in case you wanna hear and ADORABLE story he told about daughter Blue Ivy -- watch this ...