Avec GCC 7.3 : /sys/devices/system/cpu/vulnerabilities/meltdown:Mitigation: PTI /sys/devices/system/cpu/vulnerabilities/spectre_v1:Vulnerable /sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Full generic retpoline
Porject Trble (english) https://source.android.com/devices/architecture/treble
More: https://www.xda-developers.com/googles-project-treble-modularize-android-so-oems-can-update-devices-faster/