Even future hardware changes won't be enough to fix Spectre and Meltdown attacks

Remember the Meltdown and Spectre chip architecture flaws that affect the vast majority of computers we interact with on a daily basis, including smartphones and tablets? The hardware issues have been patched via software updates that, in turn, caused unwanted side-effects themselves, including temporary issues like unexpected boots, or permanent ones like a drop in performance. In the future, new chips should come with hardware changes that would prevent Meltdown and Spectre-like attacks. That'...