>> And adding 'noibpb' kernel boot parameter helps, at least in my case.
However, according to: https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown/MitigationControls doing that, "Disabling these features removes mitigations for CVE-2017-5715 (aka Spectre / Variant 2).", which sort-of defeats what the microcode fix is for.
However, the rest of the thread for Bug #1746418 does explain why my 18.04beta system is OK - it's running 4.15.0-xxx
>> And adding 'noibpb' kernel boot parameter helps, at least in my case.
However, according to: /wiki.ubuntu. com/SecurityTea m/KnowledgeBase /SpectreAndMelt down/Mitigation Controls
https:/
doing that,
"Disabling these features removes mitigations for CVE-2017-5715 (aka Spectre / Variant 2).", which sort-of defeats what the microcode fix is for.
However, the rest of the thread for Bug #1746418 does explain why my 18.04beta system is OK - it's running 4.15.0-xxx