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Date: Mon, 22 Nov 2010 17:44:44 -0600
From: Anthony Liguori <aliguori@linux.vnet.ibm.com>
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Subject: [Qemu-devel] Re: [PATCH] qemu-kvm: introduce cpu_start/cpu_stop
	commands
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To: Chris Wright <chrisw@sous-sol.org>
Cc: Anthony Liguori <aliguori@us.ibm.com>, qemu-devel@nongnu.org, kvm@vger.kernel.org

On 11/22/2010 05:04 PM, Chris Wright wrote:
> * Anthony Liguori (aliguori@us.ibm.com) 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
>