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

[Anthony Liguori]

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.

You can modify the default rtc settings using the -set operation (we can 
give the rtc a default id).  This lets localtime, td-hack, etc. all be 
aliases for -set.

--
Regards,

Anthony Liguori