Details and Mitigation Information for L1 Terminal Fault

All three applications of L1TF are speculative execution side channel cache timing vulnerabilities. In this regard, they are similar to previously reported variants. These particular methods target access to the L1 data cache, a small pool of memory within each processor core designed to store information about what the processor core is most likely to do next.

The response from DigitalOcean:

And an interesting thought: