Microsoft strengthens virtualization security of Linux kernel, adds Hyper-V support

According to news on September 8, Microsoft recently made a series of updates to the Linux kernel version 6.6, which enhanced support for Hyper-V virtualization technology. The news was confirmed by Linux leader Linus Torvalds’ endorsement, he received an update from Wei Liu, chief architect of Microsoft Azure Machine Learning.

This improvement includes support for AMD SEV-SNP client and Intel TDX Guest on Hyper-V. Additionally, there have been some upgrades to the kernel, specifically improved Advanced Configuration and Power Interface (ACPI) root object handling in the VMBus driver. These updates will improve the security and performance of virtual machines and further consolidate Linux's position in enterprise-level virtualization environments.

According to the editor's understanding, AMD's SEV-SNP technology is a secure encryption virtualization Technology designed to ensure isolation between virtual machines and their hypervisors, preventing potential side-channel attacks. Intel's TDX technology creates a trust domain that isolates the virtual machine from its virtual machine manager, improving the overall security of the virtualized environment. These improvements not only help cloud computing providers provide more secure services, but also bring additional security guarantees to enterprise users using computers equipped with AMD and Intel chips. It should be noted that although these improvements have limited impact on ordinary consumers, they are of great significance to institutions and enterprises that pay attention to the security of virtualized environments

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