Microsoft announced the integration of support for Linux environments based on the WSL2 (Windows Subsystem for Linux) subsystem as part of the recently released June Windows Server 2022 rollup update. stations.
Instead of an emulator that translates Linux system calls to Windows system calls, an environment with a full Linux kernel is provided to ensure that Linux executables run in WSL2. The proposed kernel for WSL is based on the release of the Linux 5.10 kernel, which is extended with WSL-specific patches, including optimizations to reduce kernel startup time, reduce memory consumption, return memory freed by Linux processes to Windows, and leave the minimum required set of drivers and subsystems in the kernel.
The kernel runs in a Windows environment using a virtual machine already running in Azure. The WSL environment runs in a separate disk image (VHD) with an ext4 file system and a virtual network adapter. The user-space components are installed separately and are based on builds of various distributions. For example, the Microsoft Store offers builds of Ubuntu, Debian GNU/Linux, Kali Linux, Fedora, Alpine, SUSE, and openSUSE for installation on WSL.
Additionally, we can note the corrective release of the CBL-Mariner 2.0.20220617 (Common Base Linux Mariner) Linux distribution, which is being developed as a universal base platform for Linux environments used in cloud infrastructure, edge systems and various Microsoft services. The project is aimed at unifying the Linux solutions used in Microsoft and simplifying the maintenance of Linux systems for various purposes up to date. Project developments are distributed under the MIT license.
Source: opennet.ru