Make Linux Fast Again
Observation: While there may very well be security implications of adding these kernel parameters to a Linux system that is running directly on bare-metal x86 hardware (as other posters have alluded to) -- some of these flags might have no negative effect on security <i>IF</i> the Linux in question is running in an emulated and&#x2F;or code-transpiled and&#x2F;or virtualized environment -- i.e., Bochs or QEMU or various x86 emulators written in JavaScript that run on a browser...<p>(Simple example: You probably wouldn&#x27;t care much about Spectre mitigations if you&#x27;re running Linux on a x86 emulator on an ARM CPU...)<p>In other words, some of these kernel parameters COULD give speed increases in virtualized environments WITHOUT sacrificing a corresponding loss of security, due to differences between a software-emulated x86 environment, and a hardware bare-metal actual x86 environment...<p>The trick then, can be boiled down to:<p>a) Know your Linux host environment...<p>b) Know what implications given kernel parameters will have in that environment...<p>c) Choose trade-offs accordingly...