4 ms·
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 off
by cesarb 7y ago
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 7y agoMaybe you refer to ANVIL. It was demonstrated to not be completely effective
- cesarb 7y agoThanks for the keyword! Searching for "rowhammer anvil" led me to https://web.eecs.umich.edu/~genkin/papers/another-flip-rowhammer.pdf https://web.eecs.umich.edu/~genkin/papers/another-flip-rowha... which links to https://lwn.net/Articles/704920/ 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/ https://patchwork.kernel.org/patch/9400475/ and https://patchwork.kernel.org/patch/9401819/ https://patchwork.kernel.org/patch/9401819/ so that approach was probably abandoned.