The NX bit is not just about security

· Alisa Sireneva · Sept. 3, 2026, 9:36 p.m.
Summary
The blog post recounts a challenging debugging experience by Alisa Sireneva while developing a bare-metal hypervisor on ARM64 for postmarketOS. She details the investigation of a bug that caused the phone to lock up when enabling the CTR_EL0 intercept, leading to a series of experiments and insights into low-level programming challenges.
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