I just tried on Bionic with proposed kernel. It is working too!
:~# uname -r 4.15.0-35-generic
:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic
:~# cat /sys/devices/system/cpu/vulnerabilities/l1tf Mitigation: PTE Inversion
I just tried on Bionic with proposed kernel. It is working too!
:~# uname -r
4.15.0-35-generic
:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
:~# cat /sys/devices/ system/ cpu/vulnerabili ties/l1tf
Mitigation: PTE Inversion