What’s New in Linux Kernel 4.20? Key Features and Highlights
Linux Kernel 4.20, the largest release in over a year, arrived just before Christmas, bringing major updates such as BPF network parsing, new hardware support, C‑SKY architecture, pressure‑stall detection, XArray data structures, and early NVIDIA HDMI 2.0 driver support.
21CTO guide: The latest Linux 4.20 is a massive kernel update, the biggest in over a year according to Phoronix.
After several test releases, Linux Kernel 4.20 was officially released just before Christmas.
Linus Torvalds wrote in his mailing list post that there seemed no reason to delay the 4.20 release any further, wishing everyone a happy holiday.
Highlights of version 4.20 include:
BPF support for network flow parsers
taprio traffic scheduler
Point‑to‑point DMA support in the PCI layer
Removal of variable‑length arrays
Support for the C‑SKY architecture
Pressure‑stall detection mechanism
XArray data structure
Driver and hardware updates, including support for AMD Picasso APU and Raven 2 APU
Initial support in the NVIDIA Nouveau driver for HDMI 2.0
Support for Chengdu Haiguang x86 server chip Dhyana (based on Zen architecture)
Support for another Chinese C‑SKY 32‑bit CPU architecture
Early support for AMD Zen 2 CPU, Qualcomm Snapdragon 835, and Huawei HiSilicon Hi3670
For detailed information, see the mailing list post: https://lkml.org/lkml/2018/12/23/187 https://lore.kernel.org/lkml/CAHk-=wg0zF4wa87Q5rAhFe2es0t0eExX2UjvKD7-Pghvcbt5Vw@mail.gmail.com/
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