New Linux Update Brings a Whole List of Upgrades

The Linux Kernel 7.2 was officially released, boasting a plethora of enhancements for processors, graphics, storage, networking, and virtual machines. The kernel, a fundamental component of the Linux operating system, facilitates communication between software and a computer's hardware. According to kernel.org, version 7.2 serves as the most recent mainline release as of August 16.

One of the upgrades in Linux 7.2 is cache-aware load balancing, which distributes tasks among processor cores more efficiently by considering where frequently accessed data is already stored. This can minimize delays in moving tasks between CPU cores.

The kernel also improves GPU scheduling with a new "Fair(er)" scheduler. This scheduler allocates graphics resources more equitably among various programs. Users of AMD graphics can benefit from early support for HDMI 2.1 FRL, a faster HDMI connection technology for high-resolution and high-refresh-rate displays. Intel's Xe graphics driver also receives early support for Intel's CRI platform.

Improvements in storage and memory management are also featured in Linux 7.2. By default, the operating system now enables large folios for Btrfs, allowing it to handle larger groups of memory simultaneously, thereby enhancing file reading and writing efficiency. Furthermore, Linux 7.2 enhances the swap system, enabling temporary use of storage when physical RAM becomes heavily occupied.

The newer NTFS driver used for Windows-formatted drives has also been improved, along with added support for compressed files over SMB, a technology frequently used for file sharing between computers on a network.

The updated NFS network file system utilizes a larger default 4MB block size on systems with at least 16GB of RAM, potentially accelerating large network file transfers. Linux 7.2 also expands support for Intel's forthcoming Panther Lake R processors and new ARM64 processor capabilities. The Rust programming language, increasingly used in parts of the Linux kernel due to its memory-safety features, can now be used on IBM's S/390 mainframe architecture.

Additionally, Linux 7.2 introduces a "zerocopy" library specifically designed to manipulate data without unnecessary copying.

Networking and security upgrades are another key aspect of Linux 7.2. Improved Thunderbolt networking, IPv6 support for MultiPath TCP, and upgrades for PPPoE connections are among the networking enhancements. Linux 7.2 also incorporates TCP Authentication Option support to assist in verifying network connections.

For virtual machines, the KVM system gains new AMD and Intel security and control features. Support for Intel Trusted Domain Extensions (TDX) has been added as well, designed to bolster the protection of sensitive data within virtual machines. In summary, Linux 7.2 is primarily an internal upgrade, but its changes are expected to enhance hardware compatibility, performance, networking, and security across a wide array of Linux systems.