spectre_and_meltdown_fixes_-_release_dates_for_linux_distros

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spectre_and_meltdown_fixes_-_release_dates_for_linux_distros [18.04.2018 14:35] – [3: Update your BIOS] Pascal Suterspectre_and_meltdown_fixes_-_release_dates_for_linux_distros [24.10.2018 21:40] (current) – [Performance Impact] Pascal Suter
Line 129: Line 129:
 echo 0 > /sys/kernel/debug/x86/ibpb_enabled echo 0 > /sys/kernel/debug/x86/ibpb_enabled
 echo 0 > /sys/kernel/debug/x86/ibrs_enabled echo 0 > /sys/kernel/debug/x86/ibrs_enabled
 +echo 0 > /sys/kernel/debug/x86/retp_enabled
 </code> </code>
 by default all three fixes are enabled, if you want to disable them permanently (=on every boot) you can add these three options to your kernel command line:  by default all three fixes are enabled, if you want to disable them permanently (=on every boot) you can add these three options to your kernel command line: 
 <code> <code>
-noibrs noibpb nopti+noibrs noibpb nopti noretp spectre_v2=off
 </code> </code>
 +the last ''spectre_v2=off'' is redhat/CentOS specific and might be redundant with the previous ones.
  • spectre_and_meltdown_fixes_-_release_dates_for_linux_distros.1524054908.txt.gz
  • Last modified: 18.04.2018 14:35
  • by Pascal Suter