[Qemu-devel] Re: [PATCH] qemu-kvm: introduce cpu_start/cpu_stop commands

[Anthony Liguori]

On 11/22/2010 05:04 PM, Chris Wright wrote:
> * Anthony Liguori (address@hidden) wrote:
>    
> > qemu-kvm vcpu threads don't response to SIGSTOP/SIGCONT.  Instead of teaching
> > them to respond to these signals, introduce monitor commands that stop and start
> > individual vcpus.
> >      
> In the past SIGSTOP has introduced time skew.  Have you verified this
> isn't an issue.
>    

Time skew is a big topic.  Are you talking about TSC drift, pit/rtc/hpet 
drift, etc?

It's certainly going to stress periodic interrupt catch up code.

Regards,

Anthony Liguori

> thanks,
> -chris
>