Relief for retpoline pain
Relief for retpoline pain
Posted Dec 15, 2018 19:26 UTC (Sat) by jcm (subscriber, #18262)In reply to: Relief for retpoline pain by patrakov
Parent article: Relief for retpoline pain
Retpolines don't prevent speculation, they just give the branch prediction logic a harmless path to speculate into. Speculation occurs into an infinite loop to self (with an optimization hint to the hw via a "pause" instruction so it doesn't actually consume cycles on the loop).
Posted Dec 20, 2018 13:25 UTC (Thu)
by mp (subscriber, #5615)
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This comment seems to nicely illustrate the fact that "relpoline" is indeed a name Relief for retpoline pain
too close to "retpoline" for comfort
.