The end result of these side channel attacks would be to have CPUs that perform no optimizations at all and all opcodes would run in the same number of cycles in all situations. But that will never happen. No one wants a slow CPU.
As long as these effects cannot be exploited remotely, it's not a concern. Of course multi-tenant cloud-based virtualization would be a no go.
As long as these effects cannot be exploited remotely, it's not a concern. Of course multi-tenant cloud-based virtualization would be a no go.