Analysis of HLAT on Intel Alder Lake CPUs
/ 1 min read
🖥️✨ Exploring Hypervisor-Managed Linear Address Translation (HLAT) on Intel Alder Lake CPUs. The latest installment in the HLAT series delves into the specifics of HLAT enablement across performance logical processors during Windows boot on an Intel Alder Lake CPU. The author clarifies previous misconceptions about HLAT activation patterns, revealing a deterministic yet unusual sequence as the system progresses through 24 VM Launch breakpoints. The analysis includes a detailed matrix illustrating the status of efficient E-cores and performance P-cores, highlighting key transitions between UEFI and the Windows hypervisor. Notably, the behavior of HLAT activation on P8 is examined, showcasing its alternating states during the boot process. This exploration provides valuable insights into the Windows boot flow with Hyper-V enabled and the initialization of HLAT.
