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LaurieWired
lauriewired.bsky.social
did:plc:prywlo5q2i434jue7ywslkep
Ring 0 is a highly-privileged state on CPUs.
Negative Ring Levels have even *higher* privilege. You just haven’t heard of them.
For X86, Ring -1 is Hardware Virtualization, Ring -2 is System Management Mode, Ring -3 is Intel ME / AMD PSP.
Arm get's even weirder:
2025-08-06T19:25:00.410Z