Time-travelling exploits with Meltdown

Zoomed-in view of an out-of-order speculative-execution pipeline
The Oracle at Delphi is the earliest known prototype of a branch predictor

The Exploit for Meltdown

Mitigating the Meltdown

Microscope view of a processor unwinding speculatively executed instructions
Two Microsoft engineers test the updated system-call interface that warps the kernel in and out of view

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