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A comment on Apple Silicon Hardware: SPRR and Guarded Exception Levels (GXF).

Re:Apple Silicon Hardware: SPRR and Guarded Exception Levels... by 29athrowaway on Friday May 07, 2021 @03:08PM (#27079699)
I think the should be more protection levels so the kernel itself could have at least 2 rings.
[ Parent | on HN ]
Re:Apple Silicon Hardware: SPRR and Guarded Exception Levels... by saagarjha on Friday May 07, 2021 @06:25PM (#27081528)
The kernel does essentially have two rings: the “regular” exception level and the “guarded” level.
[ Parent | on HN ]