pac

A deep-dive blog post on Apple's arm64e pointer authentication (PAC) ABI, explaining how PAC keys are stored outside memory, how instructions like PACIASP/AUTIASP sign and verify pointer bits, and how the A12's PAC field layout is measured directly on stock hardware.

Nvidia CEO Jensen Huang was interrupted by a call from former President Donald Trump during an all-hands meeting, while Nvidia also announced a new political action committee and a potential $13 billion acquisition of Hugging Face.