That paper primarily discusses a (cooperative) covert channel between processes using the FPU TS register, then mentions that caches or the TLB could similarly

That paper primarily discusses a (cooperative) covert channel between processes using the FPU TS register, then mentions that caches or the TLB could similarly be used to implement a covert channel. IMO, meltdown and Spectre and MDS are a different class of vulnerability, so I don't know that I would say that paper was about "such vulnerabilities."