The new kernel version Linux, 6.15, is now available for download and is one of the most notable releases in recent times, both for its internal improvements and increased hardware compatibility. With this release, officially announced by Linus Torvalds, users and developers find a broad list of updated features, support for newly released components, and a series of technical changes that demonstrate the effort behind each development cycle.
In addition to troubleshoot detected errors and performance issues In previous phases, Linux 6.15 introduces significant innovations to the kernel, new drivers for popular devices, and significant improvements in security and efficiency. All of this without neglecting the ongoing work on architecture and optimization of the system's internals, which remains the heart of many free software distributions around the world.
Linx 6.15 introduces hardware support and new features for Intel, AMD, and more
The 6.15 kernel significantly expands its compatibility with next-generation hardware. Highlights include advancements for Intel and AMD processors, such as the addition of the INVLPGB instruction for memory cache management in AMD CPUs, improvements to the AMD P-State driver, and the start of support for the AMD Versal NET SoC. For Intel, the initial work on Advanced Performance Extensions (APX) and the continued improvement of support for Trust Domain Extensions (TDX) stand out.
In the graphic field, profound changes are also taking place.. Preliminary code for the NOVA driver, which aims to be the successor to the popular Nouveau for NVIDIA GPUs, has been introduced. This time, it's written entirely in Rust, representing a step toward a more secure and modern kernel. The Intel Xe driver now supports Shared Virtual Memory and improves monitoring for potential GPU failures, while AMD adds features such as fan management for the Radeon RX 9070 GPUs.
File system expansion and improvements
File system optimizations are a strong point in this version.exFAT's performance has received a significant boost: with the "discard" mount option enabled, deleting large files becomes extremely efficient, going from several minutes to just a few seconds. Btrfs, on the other hand, adds support for new zstd compression levels and improves write performance in environments that require integrity checking, making it easier to use in virtual machines. The young Bcachefs system continues its path toward stability, introducing new "scrub" features and the ability to handle large blocks.
File system improvements also strengthen kernel functionality for different usage scenarios..
Network innovation and event management
Linux 6.15 Incorporates support for receiving "zero-copy" data via io_uring into its network stack, a feature that allows network packets to be copied directly into user memory without performance penalties. Additionally, the TCP stack implements the TCP_RTO_MAX_MS option, which provides greater control over retry times for IPv4 transmissions. In parallel, the new fanotify API allows real-time monitoring of file system mount and unmount events.
Rust and new security features in Linux 6.15
Rust integration is advancing with the arrival of drivers written in this language, such as the aforementioned NOVA, and new abstractions available in the core.. In terms of security, the addition of a specific hook for the io_uring subsystem is noteworthy, allowing security modules to enforce policy controls over kernel-managed data. The fwctl subsystem, although not without controversy, facilitates firmware configuration and debugging from user space through standardized Remote Procedure Calls (RPCs).
Drivers, compatibility and peripherals
Device support is significantly expandedTouch Bar drivers are arriving for MacBook Pros (both Intel and Apple Silicon), supporting advanced features like backlight management and softkeys. Other drivers enable advanced options on Samsung GalaxyBook laptops and improve compatibility with popular consoles and controllers. The kernel adds support for the Turtle Beach Recon and Stealth Ultra controllers, as well as the PowerA Wired Controller for Xbox.
In the integrated graphics space, new PCI identifiers have been added for Intel Panther Lake chips, ensuring immediate compatibility with future releases.
Performance improvements and internal optimizations in Linux 6.15
After detecting and fixing some performance issues in previous versions —such as issues affecting servers with modern processors or applications like Nginx—the team has introduced patches to revert these regressions. A significant power saving issue has also been fixed for Intel Arrow Lake U/H laptops, ensuring the suspend-to-idle feature works optimally.
Other technical changes and additional details in Linux 6.15
Linux 6.15 updates numerous drivers and subsystems, such as improvements to ACPI device handling, kernel scheduler optimizations, and the adoption of Python 3.9+ as a requirement for working with internal documentation and tools. Developers will also find new mechanisms for sealing memory mappings, additional filesystem options, and version 1.5.7 of the Zstd compression algorithm built into the kernel.
All these new features make Linux 6.15 a particularly relevant update for both end users looking for direct improvements and developers and manufacturers who need compatibility and flexibility across diverse platforms. The pace of adoption will depend on the different distributions, but the new version is now available for download and compilation from official sources.
The Linux 6.15 kernel reinforces its position as a constantly innovating platform, with advancements in hardware, security, and performance that solidify its leadership in the open source software world.