Microsoft Linux engineers have continued preparing the Linux kernel to support Hyper-V Dom0 for Linux to run as the root partition.

An initial set of Linux Hyper-V patches were posted last week for preparing to work toward this Dom0 "root partition" support with Linux under Microsoft's virtualization stack.

Nuno Das Neves of Microsoft posted the [1]initial patches that for kicking off the effort are restructuring the Hyper-V header files.

"To support Hyper-V Dom0 (aka Linux as root partition), many new definitions are required.

The plan going forward is to directly import headers from Hyper-V. This is a more maintainable way to import definitions rather than via the TLFS doc. This patch series introduces new headers (hvhdk.h, hvgdk.h, etc, see patch #3) directly derived from Hyper-V code."

Further Hyper-V Dom0 patches are still pending. Given the popularity (and dominance) of Linux in the Azure cloud and other virtualization use-cases, Microsoft continues contributing a lot to the Linux kernel around their Hyper-V support.



[1] https://lore.kernel.org/lkml/1727985064-18362-1-git-send-email-nunodasneves@linux.microsoft.com/