🔒OpenBSD 8.0 Released with 512G Kernel Address Space
Your kernel just got a lot bigger
TL;DR
OpenBSD 8.0 is out with a 512G kernel address space, improved security, and support for new hardware. This release is a must for anyone running critical systems on OpenBSD.
OpenBSD 8.0 was released on October 20, 2026, marking the 61st release of the OS. The standout feature is the 512G kernel address space, up from 4G, which is a big deal for systems with large amounts of memory. This release also includes improved security features, such as faster swap encryption and hibernate support for arm64. For developers, this means better performance and security for critical systems. Key details include 30 years of record with only two remote holes, and support for new hardware like the SpacemiT K1 SoC and Qualcomm Glymur SoC.
Key Points
OpenBSD 8.0 released on October 20, 2026, marking the 61st release.
Kernel address space increased from 4G to 512G on amd64 architecture.
Swap encryption sped up using AES CPU instructions on amd64 and arm64.
Hibernate support added for arm64, improving system reliability.
Support for new hardware like SpacemiT K1 SoC and Qualcomm Glymur SoC.
Why It Matters
If you're running critical systems on OpenBSD, the 512G kernel address space in 8.0 is a game changer. It allows for better memory management and performance, especially on systems with large amounts of RAM. The improved swap encryption and hibernate support also enhance security and reliability, making this release a must for anyone in the field.
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