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A comment on Side channel that leaked data from Intel CPUs patched by silent Windows update. Parent comment

Re:Side channel that leaked data from Intel CPUs patched by ... by menzoic on Tuesday August 06, 2019 @10:08PM (#20631428)
What does speculative mean in this context?
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Re:Side channel that leaked data from Intel CPUs patched by ... by viraptor on Tuesday August 06, 2019 @10:23PM (#20631504)
CPU speculating that it knows what the state will be after SWAPGS and continuing to load instructions into pipeline and partially executing them. In case of either a different branch bring taken, or SWAPGS causing a fault the pipeline will be rolled back, but side effects of the partial execution (like loads into cache) will not be.
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