On NTP, RTCs and accurately setting their time

[Jason Gunthorpe]

On Sat, Sep 23, 2017 at 07:23:24PM +0100, Russell King - ARM Linux wrote:

> So we're getting it almost right - except for the sloppyness of the
> workqueue being run (which is mostly dependent on the sloppiness of
> the timer.)

Looks really good. I made a note of your fix, but I probably will not
be able to pick this up again until Friday.

I think what is left to do:
- Test on x86 with CMOS, using rtclib and update_persistent_clock. I
  may be able to put together a system for this, but I don't have
  anything ready to go right now that is not kvm based. :\
- Add patches in a series to set set_offset_nsec for RTCs we have
  learned about.
- HR timer stuff, I'm inclined to put that in a dedicated patch in
  a series?

Anything else? Thanks for your patience with my untested patches :\

Jason