IIRC, there was a proposal some time ago to use performance counters to detect a... | Hacker News

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		cesarb on March 11, 2020 \| parent \| context \| favorite \| on: TRRespass: Rowhammer against DDR4 IIRC, there was a proposal some time ago to use performance counters to detect a rowhammer attempt (high number of cache misses) and stop it (by pausing the offending process until the DRAM refresh can catch up). Did anything come out of it?

emavan on March 11, 2020 [–]

Maybe you refer to ANVIL. It was demonstrated to not be completely effective

cesarb on March 11, 2020 | [–]

Thanks for the keyword! Searching for "rowhammer anvil" led me to https://web.eecs.umich.edu/~genkin/papers/another-flip-rowha... which links to https://lwn.net/Articles/704920/ which is the article I was thinking of. I can't find much else about that kernel patch other than https://patchwork.kernel.org/patch/9400475/ and https://patchwork.kernel.org/patch/9401819/ so that approach was probably abandoned.

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