4 ms·

What are you talking about?

• Tuna-Fish 8y ago
  Meltdown was caused by Intel not checking privileges correctly in a speculated context, choosing to defer such checks as long as possible. This allowed the worst and easiest to use exploit, making it possible to read from any mapped location in memory. Most other CPUs did things right even in speculated contexts. (Intel wasn't quite alone in this, though -- at least one ARM core also had this issue.)