[Qemu-devel] Re: [PATCH 0/5] Refactor and enhance RTC configuration

[Anthony Liguori]

Jan Kiszka wrote:
> Dor Laor wrote:
>   
> > I'm in favor of sticking to clock=vm as a default.
> > Most chances that the guest will have internet connect and the host (ala
> > rom hypervisor) won't have.
> >     

Default behaviors only really matter for unmanaged environments.  An 
isolated hypervisor in a rom is most certainly a managed environment.  
As long as there is the ability to do clock=vm, setting clock=host by 
default should be fine.

> Except for Jamie's case of extending some license runtime, I really see
> no real use for RTC based on vm_clock anymore. There is some reason why
> other RTCs are already based on the host clock.
>   

In general, behaving like real hardware by default and supporting odd 
use-cases with additional options seems like a good policy to me.

> Jan
>   


--
Regards,

Anthony Liguori