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AssigneeMicrosoft Technology Licensing, LLC
InventorsIshwar AGARWAL, Stefan SAROIU, Alastair WOLMAN, Daniel Sebastian BERGER
Estimating the term…
The present disclosure relates to systems and methods implemented on a memory controller for detecting and mitigating memory attacks (e.g., row hammer attacks). For example, a memory controller may track activations of row addresses within a memory hardware (e.g., a DRAM device) and determine whether a pattern of activations is indicative of a row hammer attack. This is determined using a counting mode for corresponding memory sub-banks. Where a likely row hammer attack is detected, the memory controller may activate a sampling mode (rather than the counting mode) for a particular sub-bank to identify which of the row addresses should be refreshed on the memory hardware. The implementations described herein provide a low computational cost alternative to heavy-handed detection mechanisms that require access to significant computing resources to accurately detect and mitigate row hammer attacks.
A method implemented by a memory controller for detecting and mitigating a row hammer attack on one or more memory rows of a dynamic random-access memory (DRAM) device, comprising:
A system, comprising:
A memory controller, the memory controller being configured to:
Dependencies are inferred from the claim text.