OpenBSD 8.0 adds 64-vCPU VMs, Intel Arc graphics, post-quantum crypto
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.
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.
What to do
- Upgrade to OpenBSD 8.0 to get 64-vCPU VM support, Intel Arc graphics, and post-quantum TLS defaults.
- If you run VMs on OpenBSD, update to use up to 64 vCPUs per guest and improved virtio device handling.
- If you use Intel Arc A-Series graphics, update to get driver support via the synced Linux 6.18.53 DRM drivers.
- If you administer networks, review the new rtrd/rtrctl tools for RPKI-to-Router protocol support.
Original reference: linuxiac.com →