# OpenBSD 8.0 adds arm64 hibernate, expands amd64 kernel address space to 512GB

> **Key takeaway:** OpenBSD 8.0 introduces hibernate support for arm64 systems and increases the amd64 kernel virtual address space from 128GB to 512GB.

**Published:** 2026-10-20T13:07:14+00:00 
**Source:** Linux Weekly News (LWN.net) 
**Category:** kernel-os 
**Canonical URL:** https://fosswire.org/news/openbsd-80-adds-arm64-hibernate-expands-amd64-kernel-address.html 

## Summary
OpenBSD 8.0 is now available with several kernel-level improvements. The release adds hibernate support for arm64 platforms, which was previously unavailable on that architecture. For amd64, the kernel virtual address space quadruples to 512GB. The qwx driver for Qualcomm WiFi 6 chipsets also receives multiple improvements.

## What's new in OpenBSD 8.0
- **arm64 hibernate**: New power management capability for 64-bit ARM systems, enabling suspend-to-disk functionality
- **amd64 KVA expansion**: Kernel virtual address space grows from 128GB to 512GB, supporting larger memory configurations and more kernel subsystems
- **qwx driver improvements**: Multiple updates for the driver handling Qualcomm WiFi 6 (802.11ax) wireless devices

## Why it matters
The amd64 KVA expansion addresses growing memory demands in server and workstation deployments, while arm64 hibernate support improves OpenBSD's viability for ARM-based laptops and embedded systems.