3 ms·

I have seen comments saying that but no sources.

• monocasa 4y ago
  It's widely been stated including by Arm that architectural license holders must still fully comply with the Arm Architecture Reference Manual. Apple's Arm cores do not.
  • dagmx 4y ago
    In what way are they non conforming?
    • monocasa 4y ago
      Dozens of different ways. New instructions, new privilege modes, VHE mode in EL2 can't be turned off, etc.
      • msbarnett 4y ago
        Obviously some of those are intentional architectural deviations, but is there a good reason to believe the stuck HCR_EL2.E2H bit isn't just an errata?
      • saagarjha 4y ago
        None of those are exposed to applications or in open source, are they?