# OpenBSD 8.0 adds 64-vCPU VMs, Intel Arc graphics, post-quantum crypto

> **Key takeaway:** OpenBSD 8.0 expands virtualization to 64 vCPUs per guest, adds Intel Arc GPU support via Linux 6.18.53 DRM drivers, and makes X25519MLKEM768 the default TLS 1.3 key exchange.

**Published:** 2026-10-20T09:15:53+00:00 
**Source:** Linuxiac 
**Category:** distro-news 
**Canonical URL:** https://fosswire.org/news/openbsd-80-adds-64-vcpu-vms-intel-arc-graphics-post-quantum-.html 

## Summary
OpenBSD 8.0, the 61st release of the security-focused operating system, significantly upgrades its VMM/VMD hypervisor with 64-vCPU guest support, x2APIC, and improved virtio device handling. The amd64 kernel's virtual address space expands from 4 GB to 512 GB to accommodate larger video memory mappings. ARM64 gains hibernation support, while RISC-V adds vector extension and timer capabilities. LibreSSL 4.4 and OpenSSH 10.6 introduce post-quantum cryptographic defaults.

## What's new in OpenBSD 8.0 virtualization and hardware support
- **VMM/VMD**: 64 vCPUs per guest (up from previous limit), x2APIC support, MSI/MSI-X interrupts for virtio devices, checksum offloading, improved QCOW image handling
- **Graphics**: DRM drivers synced to Linux 6.18.53; Intel Arc A-Series (Alchemist) support added via inteldrm driver
- **amd64 kernel**: Virtual address space expanded from 4 GB to 512 GB for mapping >4 GB video memory; GPU timeout fixes for Intel Alder Lake
- **ARM64**: Hibernation support added; suspend/resume fixes for Qualcomm Snapdragon laptops
- **RISC-V**: Kernel support for V vector extension, Advanced Interrupt Architecture, Sstc timer extension
- **Wireless**: qwx/qwz drivers gain 802.11n with 40 MHz channels; fixes for crashes, firmware, roaming, power management
- **Ethernet**: New support for Intel Panther Lake, Wildcat Lake, E610 controllers
- **Crypto/TLS**: LibreSSL 4.4 makes X25519MLKEM768 preferred TLS 1.3 group; OpenSSH 10.6 adds experimental ML-DSA44/Ed25519 signatures, disables LZ77 dictionary coder

## Why it matters
The 64-vCPU VM support positions OpenBSD's native hypervisor for more demanding server workloads, while Intel Arc support reduces graphics hardware barriers for desktop users. The post-quantum cryptography defaults in LibreSSL and OpenSSH place OpenBSD among the first production systems to deploy NIST-standardized quantum-resistant algorithms by default.