Systems and methods for adaptively detecting and mitigating rowhammer attacks against computer memories

Abstract

Systems and methods for adaptively detecting and mitigating RowHammer attacks or events against computer memories have been described. In an illustrative, non-limiting embodiment, a system may include a memory controller, and a RowHammer detection circuit coupled to the memory controller, where the RowHammer detection circuit is configured to: receive a count of activate commands for a segment of a memory device, where the segment comprises one or more of a plurality of memory cell rows; and detect a RowHammer event based, at least in part, upon a determination that the count of activate commands meets at least one of a plurality of trigger levels. Either the RowHammer detection circuit, or a different circuit, can then apply at least one of a plurality of RowHammer mitigation techniques, wherein each of the plurality of RowHammer mitigation techniques corresponds to at least one of the plurality of trigger levels.