• Linux 6.19 changelog. • Summary: Linux 6.19 adds a new listns(2) system call that makes much easier to list the namespaces present on the system; support for the Live Update Orchestrator, which allows to reboot a kernel via kexec while enough kernel state to allow virtual virtual machines continue working after a reboot; support for PCIe Link Encryption which lets PCIe devices encrypt its communication with confidential VMs; Btrfs support for the experimental shutdown ioctl and suspension during scrub or device replaces; Ext4 support for block devices larger than page size and faster online defragmentation; support for the color pipeline API for better and faster HDR graphics; improvements to io_uring; and support for the SFrame format that brings faster frame unwinding. • As always, there are many other features, new drivers, improvements and fixes. • You might also be interested in the list of changes done by LWN: merge window part 1, part 2 Contents - Prominent features - New listns(2) system call to list namespaces - Live update orchestrator - Support for PCIe Link Encryption - Btrfs improvements - Ext4 support for block sizes larger than page size - Add color pipeline API, sharpness property, plus other graphic updates - io_uring updates - SFrame support for faster frame unwinding - Core (various) - File systems - Memory management - Block layer - Tracing, perf and BPF - Virtualization - Cryptography - Security - Networking - Architectures - Drivers - Graphics - Power Manageme
Linux 6.19 changelog. • Summary: Linux 6.19 adds a new listns(2) system call that makes much easier to list the namespaces present on the system; support for the Live Update Orchestrator, which allows to reboot a kernel via kexec while enough kernel state to allow virtual virtual machines continue working after a reboot; support for PCIe Link Encryption which lets PCIe devices encrypt its communication with confidential VMs; Btrfs support for the experimental shutdown ioctl and suspension during
Article Summaries:
- Linux 6.19 Highlights
Linux 6.19 introduces several key features aimed at improving system management, security, and performance. A new listns(2) system call provides efficient enumeration of namespaces, replacing the previous manual /proc scan. The Live Update Orchestrator enables live kernel updates via kexec, allowing virtual machines to continue running across reboots with minimal downtime. PCIe Link Encryption support lets devices encrypt traffic to confidential VMs. File‑system updates include Btrfs shutdown ioctl and scrub suspension, Ext4 support for block sizes larger than a page, and faster online defragmentation. Additional enhancements cover a color pipeline API for HDR graphics, io_uring improvements, and SFrame format for quicker frame unwinding. The release also contains numerous driver, security, and performance fixes.
- Linux 6.19 Highlights
Linux 6.19 introduces several key features aimed at improving system management, performance, and security. A new listns(2) system call now allows userspace programs to enumerate namespaces directly, replacing the previous inefficient /proc‑based approach. The Live Update Orchestrator (LUO) enables kernel updates via kexec while preserving state for virtual machines, reducing downtime in cloud environments. PCIe Link Encryption support lets devices encrypt traffic to confidential VMs. File‑system updates include Btrfs shutdown ioctl support, Ext4 block‑size expansion, and faster online defragmentation. Additional enhancements cover a color pipeline API for HDR graphics, io_uring improvements, and the SFrame format for quicker frame unwinding.
- Linux 6.19 Highlights
Linux 6.19 introduces several key features aimed at improving system introspection, reliability, and performance. A new listns(2) system call enables efficient enumeration of namespaces, replacing the previous /proc‑based method. The Live Update Orchestrator (LUO) allows a kernel to reboot via kexec while preserving state for virtual machines, reducing downtime in cloud environments. PCIe Link Encryption support lets devices encrypt traffic to confidential VMs. File‑system updates include Btrfs shutdown ioctl and scrub suspension, Ext4 support for block devices larger than a page, and faster online defragmentation. Additional enhancements cover a color pipeline API for HDR graphics, io_uring improvements, and SFrame format support for quicker frame unwinding. The release also contains numerous driver, security, and networking updates.
- Linux 6.19 introduces several key features aimed at improving system management, performance, and security. A new
listns(2)system call provides efficient enumeration of namespaces, replacing the previous manual scanning of/proc. The Live Update Orchestrator enables kexec‑based kernel reboots while preserving state for virtual machines, reducing downtime in cloud environments. PCIe Link Encryption support allows encrypted communication between PCIe devices and confidential VMs. File‑system updates include Btrfs shutdown ioctl support and Ext4 handling of block sizes larger than a page, along with faster online defragmentation. Additional enhancements cover a color pipeline API for HDR graphics, io_uring improvements, and SFrame frame‑unwinding support. - Linux 6.19 introduces several key kernel enhancements. A new listns(2) system call provides efficient, kernel‑level enumeration of namespaces, replacing the previous /proc‑based approach. The Live Update Orchestrator (LUO) enables kexec‑based kernel reboots while preserving VM state, reducing downtime for cloud workloads. PCIe Link Encryption support allows devices to encrypt traffic to confidential VMs. File‑system updates include Btrfs shutdown ioctl support and Ext4 handling of block sizes larger than a page, plus faster online defragmentation. Additional improvements cover a color pipeline API for HDR graphics, io_uring performance tweaks, and the SFrame format for quicker frame unwinding.
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