* Ingo Molnar <mi...@kernel.org> wrote:
> We have many of the building blocks in place and have
> them available:
>
> - the freezer code already attempts at parking/unparking
> threads transparently, that could be fixed/extended.
>
> - hibernation, regular suspend/resume and in general
> power management has in essence already implemented
> most building blocks needed to enumerate and
> checkpoint/restore device state that otherwise gets
> lost in a shutdown/reboot cycle.
>
> - c/r patches started user state enumeration and
> checkpoint/restore logic
I forgot to mention:
- kexec allows the loading and execution of a new
kernel image.
It's all still tons of work to pull off a 'live kernel
upgrade' on native hardware, but IMHO it's tons of very
useful work that helps a dozen non-competing projects,
literally.
Thanks,
Ingo
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