There is nothing particularly convoluted in either meltdown or this new attack. This optimization could have happened on any other architecture. The legacy par

There is nothing particularly convoluted in either meltdown or this new attack. This optimization could have happened on any other architecture. The legacy parts have either been disabled in 64-bit mode, or they are implemented in microcode. Other architectures are not simple either, ARM64 has incredibly complicated paging for example.