Linus Torvalds has announced the release of Linux kernel 6.12, the latest stable version that comes with a host of new features and improvements aimed at enhancing system performance and usability.
Linux Kernel 6.12 Notable Updates
Notable updates in this version include real-time “PREEMPT_RT” support, a new scheduling algorithm called sched_ext, and the unique integration of DRM panic messages displayed as QR codes. The support for Clang, particularly for nolibc, is also a highlight, along with an updated cpuidle tool that now provides clearer insights into idle state information.
Developers will benefit from the introduction of SWIG bindings for libcpupower, enabling them to better script with this library. The kernel also streamlines the loading of microcode patches for AMD’s Zen architecture and enhances error address translation capabilities using the UEFI platform runtime mechanism.
Among the significant improvements, Linux 6.12 adds file-backed mount support for the EROFS filesystem, introduces guest PMU capabilities for LoongArch KVM, and implements ACPI-based enumeration for RISC-V interrupt controllers. A new thermal core testing module allows for the creation of mock thermal zones for testing purposes.
In terms of networking, this release integrates Device Memory TCP, facilitating zero-copy TCP payloads, and brings IPv6 enhancements alongside the ability to read Physical Hardware Clock timestamps with extended precision.
Drivers have also been updated, with new ones for various hardware platforms, including support for Mediatek MTK7981, Realtek automotive PCIe devices, and several improvements in power management drivers for Intel and AMD processors.
Linux kernel 6.12 continues to advance filesystem capabilities, updates to the EXT4, Btrfs, exFAT, and Bcachefs filesystems are included, and several bug fixes and documentation improvements are part of the package.
For those interested in the new kernel, it can be downloaded from Linus Torvalds’ git tree or the official kernel.org site. However, it is generally advisable to wait for it to appear in your distribution’s stable repositories before performing an upgrade.
What is new in Linux Kernel 6.12?
Linux Kernel 6.12 introduces PREEMPT_RT for real-time support, the sched_ext scheduling algorithm, DRM panic QR codes, enhanced Clang nolibc support, and updates to tools like cpuidle and libcpupower SWIG bindings.
How does PREEMPT_RT benefit users?
PREEMPT_RT enhances real-time capabilities, offering low-latency and high-determinism for critical applications such as industrial automation and real-time data processing.
What are DRM panic QR codes in Linux Kernel 6.12?
When a DRM-related kernel panic occurs, the error message is displayed as a QR code. Users can scan this with their devices for quick access to troubleshooting information.
Are there improvements in networking?
Yes, Linux Kernel 6.12 includes Device Memory TCP (DM-TCP) for zero-copy TCP payloads, IPv6 enhancements, and precise Physical Hardware Clock timestamps for better networking accuracy.
What changes have been made to filesystem support?
This release updates filesystems like EXT4, Btrfs, exFAT, and Bcachefs, adding new features and improving performance for better data handling.
Does Linux Kernel 6.12 improve hardware support?
Yes, it introduces new drivers for hardware such as Mediatek MTK7981, Realtek automotive PCIe devices, and updated power management drivers for Intel and AMD processors.
What tools are enhanced for developers?
Developers can benefit from SWIG bindings for libcpupower, making scripting more efficient, and an updated cpuidle tool for deeper insights into idle state performance.
How does the kernel handle AMD Zen architecture?
Linux Kernel 6.12 improves microcode patch loading and enhances error address translation for AMD’s Zen processors using the UEFI platform runtime mechanism.
Is there support for virtualization or new platforms?
Yes, the kernel adds guest PMU capabilities for LoongArch KVM, ACPI-based enumeration for RISC-V interrupt controllers, and optimizations for virtualization environments.
Where can I download Linux Kernel 6.12?
The kernel can be downloaded from Linus Torvalds’ git tree or the official site at kernel.org. It’s recommended to wait until it appears in your distribution’s stable repository for safer updates.
Should I upgrade immediately?
If you require the new features or hardware support introduced in Linux Kernel 6.12, upgrading is beneficial. However, waiting for your distribution’s stable update is advisable for production environments.
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