Looks like that's a yes
It's only taken 31 years for someone to get around to testing it on the arm instruction set.
So are there any BGA ECC RAM
chips for the rpi4?
or a Memory Encryption Unit?
ECC only provides a certain probability that memory corruption caused by rowhammer will be detected and corrected. The hardware issues related to refresh and circuit density are still present in modern ECC memories. Older systems based on Pentium 4 and Athlon II CPUs as well as older ARM based systems may be immune because of using lower density memory at slower data rates. It would be interesting to know which, if any, of the Raspberry Pi computers have this hardware bug.