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you should probably upgrade that kernel

If only there were some way to upgrade the kernel without rebooting. What a god-send that would be.

The Spectre/Meltdown patches required a reboot.

Not all architectures are affected by it.

/s?

(kgraft, kpatch)

What can you tell from the line?

Hasn't rebooted in a year

That used to be a selling point of Linux versus Windows.

Times have changed...