As Linux version 4.0 was released on 15 April, one of the most discussed new features to be included in this release is "no reboot" kernel patching. With the major distros committing to support the 4.0 kernel and its features (including "no reboot" patching) at some point this year, it's a good time to take a look at what this feature actually does and what difference it will make for you.
First of all, what does it actually mean? Well, for once, this is a feature with a name that describes what it does pretty well. With versions of Linux before 4.0, when the kernel is updated via a patch, the system needs to reboot.
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