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--- linux:kernel:bugs [2020/02/12 08:52] – created niziak
+++ linux:kernel:bugs [2023/02/17 10:37] (current) – niziak
@@ Line 1: / Line 1: @@
-====== Disable Spectre / Meltdown patches ======
+====== Bugs ======
-add to kernel commandline: <code>pti=off spectre_v2=off l1tf=off nospec_store_bypass_disable</code>
+====== Spectre / Meltdown  ======
+[[https://linuxreviews.org/HOWTO_make_Linux_run_blazing_fast_(again)_on_Intel_CPUs]]
+[[https://romanrm.net/disable-meltdown-spectre-patches]]
-====== Enable maximim mitigaions for Spectre / Meltdown attack ======
+  * 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: <code>pti=off spectre_v2=off l1tf=off nospectre_v1 nospec_store_bypass_disable</code>
+Or for Kernel 5.1.13 <code>mitigations=off</code>
+===== Enable maximum mitigaions for Spectre / Meltdown attack =====
 das
+===== spectre-meltdown-checker =====
+<code bash>sudo apt-get install spectre-meltdown-checker</code>