After 8 months of development published release of a free hypervisor xen 4.19. In the development of the new issue, companies such as Amazon, ARM, EPAM Systems, and AMD took part. Formation of updates for the Xen branch 4.19 will last until February 2026, and the publication of vulnerabilities until August 2027.
Key changes in Xen 4.19:
- For systems based on architecture ARM added Support for the mechanism of asynchronous data exchange “ ff-a (Firmware Framework for Arm A-Profile). The possibility of dynamic addition and removal of nodes in Xen Device Tree using .dtbo files has been implemented.
- For systems on the X86 architecture, a new interruption driver has been added to x2apic using the regime of logical addressing (Cluster Logical) For internal interruptions (IPI, Inter-Processor Interrupt) and physical addressing mode for external interruptions.
- Declared outdated and will be discontinued in the next issue of Support for Intel Xeonphi processors.
- Transferred to the category of “supported with reservations” PVH virtualization mode, combining elements of the para-virtualization modes (PV) for input/output, processing of interruptions, organization of loading and interaction with equipment, using complete virtualization (HVM) to limit privileged instructions, insulation of systemic challenges, and virtualization of memory pages tables. PVH/HVM adds the support of mapping of
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