Speculative side channel hint instruction

摘要

DeviceA processing circuit 14 for performing data processing in response to instructions;Memory system 20Support speculative processing for reading operations to read data fromProcessing circuit 14 andA speculative side channel hint instruction indicating whether there is a risk of information leakage when at least one subsequent read operation is processed speculativeIdentifies whether a sequence of instructions to be processed by the processing circuit includesDepending on whether the instruction includes speculative side channel hint instructionsA control circuit 12 that determines whether Speculative side channel alleviation should be triggered1420 and.This can be used to reduce the impact of the measures taken to protect against speculative side channel attacks.