Memory Integrity Enforcement, perhaps?
https://security.apple.com/blog/memory-integrity-enforcement...
It's "Secure Page Table Monitor". https://support.apple.com/en-il/guide/security/sec8b776536b/.... The kernel requires it so they need to emulate SPTM.
alt Hacker News
It's "Secure Page Table Monitor". https://support.apple.com/en-il/guide/security/sec8b776536b/.... The kernel requires it so they need to emulate SPTM.