CPU designers have been aware of this attack vector for a while, so many (maybe all) have controls to lock these registers. They are written and locked by vendor firmware before it hands off to the operating system.
replyYou would have first break the firmware or locks before an attack like this on a modern CPU
Zen has completely different memory controller IP (UMC), that's configured at boot by AGESA/PSP. I doubt this exploit applies to modern Zen CPUs, however AMD are the only ones who could really confirm this.
replyThat information is intentionally left out
replyIt's on the second paragraph, titled "Target".
reply> Developed and tested on AMD Family 16h CPUs, the last generation whose datasheets document the DRAM controller's translation registers
Then publishing it in this incomplete state is just pointless fearmongering and will just make others fill in this information within the next couple of days. And the good guys likely won't be the first ones to do that.
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