Windows ARM64 Internals: Exception & Privilege Model, Virtual Memory Management, and Windows under Virtualization Host Extensions (VHE)

This report provides a comprehensive technical analysis of Windows 11 on ARM64, detailing exception levels, hypervisor integration via Virtualization Host Extensions (VHE), and the OS’s virtual memory model, including page table hierarchy, PTE formats, self-referential paging for PTE management, and TLB caching with ASIDs/VMIDs. It walks through manual address translation with WinDbg, highlights differences from x86/x64 (e.g., TTBR0/TTBR1 usage and 47-bit translation), and explains how Windows maps and manages page tables in virtual memory for performance and isolation. No threat activity, vulnerabilities, or security incidents are described.