ABACuS: All-Bank Activation Counters for Scalable and Low Overhead RowHammer Mitigation

arXiv:2310.09977v3 Announce Type: replace
Abstract: We introduce ABACuS, a new low-cost hardware-counter-based RowHammer mitigation technique that performance-, energy-, and area-efficiently scales with worsening RowHammer vulnerability. We observe that both benign workloads and RowHammer attacks tend to access DRAM rows with the same row address in multiple DRAM banks at around the same time. Based on this observation, ABACuS's key idea is to use a single shared row activation counter to track activations to the rows with the same row address …

access address area arxiv attacks bank banks cost counter cs.ar cs.cr dram energy hardware low mitigation observe performance rowhammer vulnerability workloads