4 ms·

It can be controlled by a boot option in linux.

• userbinator 9y ago
  Not this one, which basically penalises every indirect call by preventing them from being speculatively executed.
  • wilun 9y ago
    I don't see why the text could not be fixed at boot time. It has been done before.
    • jtc331 9y ago
      Because this actually changes how every indirect call is compiled.
      • wilun 9y ago
        So what? IIRC we used to have (and maybe still have) a feature that patched out spinlocks in binary code when it detects it is run on monoprocessor systems. You "just" have to identify all the call sites, and patch the code there during the boot process.