You know there is a good read ahead when "References" alone takes 5 pages.
Rowhammer could look like a kids toy.
I hope any new specs will require mandatory software tuned throttles for accessing any cells that are "electrically adjacent" in any way.
The way I see it, there should be little reason to allow fast repeated access to any small number of cells in a system. The caches are there to pick up such access anyway. AFAIK all the rowhammer type attacks use some method of bypassing the caches. Having some kind of performance degradation in the corner case of a program intentionally bypassing the caches should be preferable to having crazy security problems.