RowPress breaks memory isolation by keeping a DRAM row open for a long period of time, which disturbs physically nearby rows enough to cause bitflips. It has been observed in DDR4, getting worse for smaller nodes. Adapting existing RowHammer mitigation techniques to also mitigate RowPress incurs low additional performance overhead.
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RowPress: a new DRAM disturb mechanism
- Thread starter Fred Chen
- Start date
RowPress breaks memory isolation by keeping a DRAM row open for a long period of time, which disturbs physically nearby rows enough to cause bitflips. It has been observed in DDR4, getting worse for smaller nodes. Adapting existing RowHammer mitigation techniques to also mitigate RowPress incurs low additional performance overhead.