Re: [Qemu-devel] BUG: RTC issue when Windows guest is idle

[Xiexiangyou]

Hi Alex：
    I have been test with the QEMU Master version for several days, and the 
issue is not appear too. 
I think you have fixed it using the timeout instead of alarm timer! 
It' great!
But I want to know why alarm timer will make the problem, is the reason that 
losing the alarm event?

Thanks
---
xiexiangyou  

-----Original Message-----
From: Alex Bligh [mailto:address@hidden 
Sent: Monday, October 28, 2013 3:45 PM
To: Matthew Anderson
Cc: Alex Bligh; Xiexiangyou; Stefan Hajnoczi; address@hidden
Subject: Re: [Qemu-devel] BUG: RTC issue when Windows guest is idle


On 28 Oct 2013, at 06:58, Matthew Anderson wrote:

> I've been doing some testing with the latest git version and so far I haven't 
> seen a guest freeze in the same circumstances as before. 

That's good news.

> A weird thing that has been happening is the RTC timer stopping after a live 
> migration. This happened in both 1.6.1 and the 1.6.50 git build. To replicate 
> the issue I was migrating to/from the same machine and anywhere between 1 and 
> 3 migrations the guest clock would stop. Connecting to the VNC console would 
> not get it running again. I've tried to replicate the issue with the HPET 
> enabled but the guest clock works flawlessly with it enabled.

Does that one happen on master/1.7 as well? Oddly we saw this one or something 
like it on Xen+qemu.

-- 
Alex Bligh