[zsmi]

There was another paper last year that showed something similar, and it went into way more detail on what TRR actually is.

TRRespass: Exploiting the Many Sides of Target Row Refresh

https://arxiv.org/pdf/2004.01807.pdf

Memory controller mitigation of RowHammer can work pretty well, if one actually has it turned on. Which is unfortunately rarely the case even in 2021.