Get the Whitepaper called SPOILER: Speculative Load Hazards Boost Rowhammer and Cache Attacks. This research was produced jointly between Worcester Polytechnic Institute and University of Lubeck. It has been noted that software mitigations tied to Spectre will not mitigate this newly identified issue.
You can download it from the following link: https://packetstormsecurity.com/files/download/152002/1903.00446.pdf
Source: https://packetstormsecurity.com/files/152002/SPOILER-Speculative-Load-Hazards-Boost-Rowhammer-And-Cache-Attacks.html