> Now the execution of both sides of a branch is basis for the 'Specter' side-channel attack. Access restricted data in the false branch, data access still happ

> Now the execution of both sides of a branch is basis for the 'Specter' side-channel attack. Access restricted data in the false branch, data access still happen even though it was restricted. By all accounts of Spectre I've seen, the processor never tries to speculate both sides of the branch. Instead, it always predicts one side of the branch, and speculatively executes that side only: when it later turns out to have been a misprediction, it rolls back the speculative execution, and proceeds to execute the other side from scratch. Both sides are executed at some point, but not simultaneously.