Cloud Hypervisor 28 Released As The Project's First LTS Version

Written by Michael Larabel in Virtualization on 18 November 2022 at 06:10 AM EST. 7 Comments
Cloud Hypervisor as the open-source, Rust-written and modern hypervisor project that was started by Intel and now also backed by AMD, Arm, Microsoft, and other vendors is out with a big release.

The Cloud Hypervisor VMM continues to be focused on running "modern cloud workloads" across Windows and Linux guests while retaining a minimal footprint and making use of Rust as part of its security guarantees. With Thursday's Cloud Hypervisor 28 release, it's the first time they are having a Long term Support (LTS) release.

Cloud Hypervisor LTS releases are intended to be maintained for 18 months and with the intention of supporting live migration and live upgrades between LTS point releases. Cloud Hypervisor is reaching a nice maturity point and industry adoption that the developers feel comfortable now to support declared LTS versions for year and a half increments.

In addition to christening Cloud Hypervisor LTS, the Cloud Hypervisor 28 introduces virtualized TPM support, transparent huge page (THP) support, documentation improvements, and various bug fixes.

Among the bug fixes is now supporting more than 31 vCPUs on AArch64, fixing copy-on-write handling for pinned pages to avoid high memory use, VirtIO device bug fixes, support for QCOW files larger than 4 TiB, and other fixes. Putting Cloud Hypervisor 28 together were engineers from Microsoft, Intel, Arm, Tencent, and ZTE.

Downloads and more details on Cloud Hypervisor 28 LTS via GitHub.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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