Re: [Qemu-devel] Re: [PATCH] re-set rtc date on reset handler

[Gleb Natapov]

On Wed, Sep 09, 2009 at 10:34:54AM -0500, Anthony Liguori wrote:
> Avi Kivity wrote:
> >On 09/09/2009 04:31 PM, Jan Kiszka wrote:
> >>'drift-compensation-for-windows-guests' - this is at least what the
> >>documentation suggests right now. I was looking for a short tag (but not
> >>as short as 'td'...).
> >>
> >
> >It would work for any guest that uses rtc as its main clock source.
> 
> First step is qdev conversion for the RTC.  You can then introduce a
> drift property.  I'd suggest something like
> drift=none|catchup|gradual.  The default can be none.  We can also
> introduce a kvm machine type where the default is catchup.
> Obviously, we don't support gradual today.
> 
What is "catchup" and what is "gradual"?

--
                        Gleb.