US EditionPublished • loading... • Updated
Xen Project Delivers Xen 4.21, a Modernized Hypervisor with Broader Architecture Support and Improved Performance
Xen 4.21 enhances support for x86, Arm, and RISC-V architectures with safety features and performance improvements, advancing functional-safety readiness for automotive and embedded systems.
- The Xen Project released Xen 4.21 as a modernized type-1 hypervisor with expanded support for x86, Arm and RISC-V about half a year after its prior release, demonstrated at Xen Summit 2025.
- To modernize the hypervisor, Xen Project raised GCC, Binutils and Clang minimums, added MISRA-C fixes, Arm MPU support, and refactored dom0less virtualization for smaller, certifiable builds.
- Xen 4.21 introduces performance changes such as smarter cache management, improved PCI handling, an AMD CPPC driver, a page-index compression algorithm, and better cache attribute management.
- Xen 4.21 positions Xen as a versatile platform spanning data center and cloud operators to automotive and embedded systems, delivering better performance per watt and simplifying Xen-based PoCs.
- With Citrix and Vates backing, demonstrations by AMD and Honda at Xen Summit 2025 showcase industry support for Xen 4.21, bolstering adoption prospects.
Insights by Ground AI
12 Articles
12 Articles
Xen Project Delivers Xen 4.21, a Modernized Hypervisor with Broader Architecture Support and Improved Performance
/PRNewswire/ -- The Xen Project, an open source hypervisor hosted at the Linux Foundation, today announced the release of Xen 4.21, which updates toolchain...
·United States
Read Full ArticleCoverage Details
Total News Sources12
Leaning Left1Leaning Right0Center5Last UpdatedBias Distribution83% Center
Bias Distribution
- 83% of the sources are Center
83% Center
L 17%
C 83%
Factuality
To view factuality data please Upgrade to Premium
