ACRN: A Big Little Hypervisor for IoT Development
summary
ACRN is a type‑1, partitioning device hypervisor for Intel-based embedded/IoT systems that deliberately keeps core firmware tiny (about ~30k LOC versus KVM’s ~290k) and pushes device drivers into a service VM which manages hardware and mediates guests. It uses VMX/EPT/VT‑d, supports virtio/paravirt for I/O, implements an Intel CSE keystore with virtual MEI/HECI, provides virtual PIC/APIC and mediated GPU/USB passthrough, targets Linux and Android guests, and ships under a permissive PSP/BSD‑style license; project is young and x86_64 focused.
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chapters (11)
- 0:00Intro
- 1:13Architecture Overview
- 12:47Verified Boot Sequence with SBL
- 18:16SEED Virtualization
- 19:58HECI (Host Embedded Controller Interface)
- 23:02Storage Virtualization
- 24:35Network Virtualization
- 25:3110C (VO Controller) Virtualization
- 27:44GPU Virtualization
- 30:04Audio Virtualization
- 33:02USB Virtualization
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