Linux kernel 5.0

Linux kernel 5.0
Name	Linux kernel 5.0
Developer	Linus Torvalds, Greg Kroah-Hartman, The Linux Foundation
Released	March 3, 2019
Written in	C (programming language), Assembly language
Operating system	Linux
License	GNU General Public License

Linux kernel 5.0 Linux kernel 5.0 was a major mainline kernel release announced in early 2019 under the stewardship of Linus Torvalds, coordinated with maintainers such as Greg Kroah-Hartman and contributors associated with The Linux Foundation and the broader Linux kernel development community. The release consolidated contributions from corporations like Intel, AMD, IBM, Google and projects including Android, Ubuntu and Debian distributions, bringing protocol, driver, and subsystem updates across architectures like x86, ARM and PowerPC. The timing followed prior releases such as the series culminating in Linux kernel 4.20 and preceded subsequent series exemplified by Linux kernel 5.1.

Overview

Linux kernel 5.0 represented a milestone in the Linux kernel's ongoing development, integrating patches from stakeholders including Red Hat, SUSE, Canonical and vendors like NVIDIA, Broadcom and Qualcomm. The release combined upstream work from academic contributors at institutions such as Massachusetts Institute of Technology and University of Cambridge with corporate engineering from Intel Corporation and IBM. Community governance and processes referenced practices originating in projects like Git and incidents paralleling discussions from events like the Linux Plumbers Conference.

Development and Release

The development cycle for Linux kernel 5.0 followed the established merge-window model initiated by Linus Torvalds and implemented via tools like git(1), with tree management influenced by maintainers including Greg Kroah-Hartman and reviewers participating in meetings akin to Kernel Summit and Linux Plumbers Conference. Contributors ranged from individuals affiliated with enterprises such as Google and Facebook to independent developers connected to projects like OpenSUSE and Arch Linux. The release process involved decisions informed by proposals discussed on mailings such as the Linux Kernel Mailing List and patch submissions reviewed by subsystem maintainers representing groups like the networking and filesystem teams.

New Features and Changes

Notable changes in this release included new drivers and subsystem refinements contributed by engineers from Intel Corporation and AMD, along with enhancements from researchers affiliated with University of Illinois Urbana-Champaign and labs at Google. The kernel integrated features touching components used by distributions such as Fedora, openSUSE and Debian, aligning with standards referenced by organizations like IEEE and The Open Group. Improvements addressed interfaces consumed by projects like Kubernetes and Docker, supporting workloads relevant to vendors including Red Hat and Canonical.

Hardware Support

Hardware enablement in Linux kernel 5.0 encompassed platforms from server vendors such as Dell Technologies, Hewlett Packard Enterprise and Lenovo, plus embedded systems from companies like Raspberry Pi Foundation and NVIDIA. Architectural work targeted x86-64 enhancements influenced by Intel Corporation and AMD microarchitectures, ARM updates relevant to devices from Qualcomm and Samsung, and maintenance for PowerPC and RISC-V efforts promoted by entities like SiFive. Peripheral and SoC drivers benefitted projects and vendors including Broadcom, Realtek, Texas Instruments and MediaTek.

Performance and Security Improvements

Performance tuning and security hardening in this release included scheduler and memory-management patches from contributors at Red Hat and Google, mitigations for classes of vulnerabilities discussed in advisories referenced by MITRE and coordination with security teams such as those at CVE-tracking organizations. Work on mitigations and features considered impacts related to vulnerabilities like those discussed in Spectre and Meltdown disclosures, and involved tooling used by teams at Mozilla and Microsoft for validation. Optimizations affected virtualization stacks used by KVM and container platforms including LXC and Docker.

Reception and Impact

Reception among distributions and enterprise users was shaped by endorsements from organizations such as Red Hat, Canonical and SUSE, with analysis from publications like Phoronix and commentary from industry figures at conferences including Open Source Summit. Adoption influenced downstream projects including Android device support, server deployments by cloud providers like Amazon Web Services and Google Cloud Platform, and embedded initiatives led by the Raspberry Pi Foundation and hardware vendors such as NVIDIA. The release continued the trajectory of kernel evolution coordinated among participants in the Linux kernel development ecosystem.

Category:Linux kernel version history