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Bugs

Spectre / Meltdown

https://linuxreviews.org/HOWTO_make_Linux_run_blazing_fast_(again)_on_Intel_CPUs https://romanrm.net/disable-meltdown-spectre-patches

  • Disable Spectre V4 `nospec_store_bypass_disable` (Kernel 4.17)
  • Disable Spectre V1 `nospectre_v1` (Kernel 4.19)
  • Control Spectre V2 complexity level: `spectre_v2`, possible values: `off`
  • Control

Disable all Spectre / Meltdown patches

add to kernel commandline: 

pti=off spectre_v2=off l1tf=off nospectre_v1 nospec_store_bypass_disable

Or for Kernel 5.1.13 

mitigations=off

Enable maximum mitigaions for Spectre / Meltdown attack

das

spectre-meltdown-checker

sudo apt-get install spectre-meltdown-checker