Linux LTS kernel tuetaan jatkossa 6 vuoden ajan

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05.11.2016
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Android users rejoice! Linux kernel LTS releases are now good for 6 years
Keynote: Iliyan Malchev (Google) – SFO17-400K1

During a Linaro Connect 2017 presentation on Android's Project Treble, Googler Iliyan Malchev announced that Linux LTS (Long Term Support) kernels were switching from a two-year lifecycle to a whopping six years of support.
Eli jatkossa Linux LTS kernelit on tuettu kuuden vuoden ajan nykyisen kahden vuoden sijaan. Merkittävä asia varsinkin Android puhelimille.

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Two years of support is fine for some computers, but it's not really enough time in the world of ARM devices, and especially in the world of Android. For Android, Google grabs a Linux LTS kernel and changes it into the "Android Common" kernel. This can then go to an SoC vendor like Qualcomm, which modifies it to work on a particular SoC. Then an OEM like Samsung can take this and build it into a phone. By the time this is all done and a device is ready to be released, we're already most of the way through the two years of kernel support. This doesn't even cover the consumer ownership lifecycle. Google provides three years of security updates for Android releases, which can mean years of Google having to maintain an old LTS kernel all by itself.
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A six-year support window will give Google, SoC Vendors, and OEMs plenty of time to develop a device and get it to market, while still leaving about four years for end-user ownership. Google currently provides two years of major OS updates on its phones and three years of security updates, but if it wanted to extend that, an announcement like this would seem like an important first step.
Esimerkiksi Googlen Pixel julkaistiin 3.18 kernelillä joka julkaistiin vuonna 2014 ja saavutti EOL statuksen tammikuussa 2017.
Vertailun vuoksi uusin LTS kerneli on 4.9 ja uusin stable kerneli on 4.13.
Eli siis Googlen kolmen vuoden päivitys lupauksen takia Google joutuu ylläpitämään tuota "kuollutta" kerneliä lokakuuhun 2019 asti.

Snapdragon 835 devices are already running on Linux kernel 4.4, so many 2017 flagships shipping today (or say, next week) will benefit from this change. Android kernels are tied to SoCs, and devices never upgrade kernels, so anyone not running a Snapdragon 835 (or maybe the latest Exynos?) is out of luck.
 
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