3 ms·

more or less... I'm surprised the CPU doesn't already flush caches after speculative execution branches are abandoned

• plorkyeran 9y ago
  Flushing the cache after every branch misprediction would probably make branch prediction a net loss in performance.
  • eecc 9y ago
    Well not all caches, just the part tagged with the mispredicted branch
    • singingboyo 9y ago
      But that'd still be vulnerable. The issue isn't that you can read whatever was in/got brought into cache, the issue is that you can tell which part of the cache got evicted and infer values based on that.