RE: [PATCH] clockevents/drivers/i8253: Do not zero timer counter in shutdown

[Li,Rongqing]

> > > Hyper-V and KVM follow the spec, the issue that 35b69a42
> > > "(clockevents/drivers/
> > > i8253: Add support for PIT shutdown quirk") fixed is in i8253
> > > drivers, not Hyper-v, so delete the zero timer counter register in
> > > shutdown, and delete PIT shutdown quirk for Hyper-v
> >
> > From the standpoint of Hyper-V, I'm good with this change.  But
> > there's a risk that old hardware might not be compliant with the spec,
> > and needs the zero'ing for some reason. The experts in the x86 space
> > will be in the best position to assess the risk.
> 
> Yep, my feeling exactly.  My input is purely from reading those crusty old specs.

Hi Thomas:

Could you give some suggestion about this patch?

Thanks

-Li