After eight months of development published release free hypervisor xen 4.16 . The development of a new issue was attended by company such as Amazon, Arm, Bitdefender, Citrix and Epam Systems. Release of updates for the XEN branch 4.16 will last until June 2, 2023, and publication of corrections of vulnerabilities before December 2 2024.
Key Changes in Xen 4.16:
- in TPM Manager , providing virtual chips for storing cryptographic keys ( VTPM) implemented on the basis of the general physical TPM (Trusted Platform Module), corrections are made for the subsequent implementation of support for the TPM 2.0 specification.
- Evil addiction from the layer PV SHIM used to run unmodified ferrictualized guest systems (PV) in PVH and HVM environments. In the future, the use of 32-bit politutual guest systems will be possible only in PV Shim mode, which will reduce the number of seats in a hypervisor in which potentially vulnerabilities may potentially be.
- Added the ability to download on Intel devices without a programmable timer (PIT, PROGRAMMABLE INTERVAL TIMER).
- cleaning outdated components was performed, the default assembly of code “ qemu-xen -traditional “and PV-GRUB (the need for data specific for Xen forces disappeared after the transfer of changes to Xen support In the basic composition of QEMU and GRUB).
- For Guest Systems with Arm architect, the initial support for virtualized counters to track performance has been implemented ( Performance Monitor Counters ).
- Improved support for the DOM0less mode, allowing to do without deploying the DOM0 environment when you start virtual machines at the earlier stage of the server loading. The changes made allowed to implement support for 64-bit ARM systems with EFI firmware.
- improved support for the heterogeneous 64-bit ARM systems based on the Big.little architecture, combining powerful in one chip, but consuming a lot of energy, kernels, and less productive, but more energy efficient kernels.
At the same time Intel published Hypervisor release CLOUD HYPERVISOR 20.0
/Media reports.