https://bugzilla.kernel.org/show_bug.cgi?id=201497
--- Comment #1 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- The revert was only supposed to apply to 4.18 and below, there should be a series of patches that fixes this for 4.19.
Please post an updated dmesg log for your 4.19 kernel.