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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 cor

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?