Yet again, hardware vendors prove they learned nothing from the Spectre/Meltdown fiasco. By implementing DMP, Intel and Apple have doubled-down on putting performance ahead of security and correctness. A fast CPU that leaks my private keys is not a CPU; it's an expensive colander.

There are alternatives to making the hardware faster, but hardware vendors are not looking in the right places. Maybe they will reach a dead-end in terms of making CPUs faster, and then begin looking elsewhere for performance improvement.