Re: [kvm-devel] [ANNOUNCE] kvm-51 release

[david a. <da...@ci...>]

I let the host stay up for 90 minutes before loading kvm and starting a VM. On the first reboot it hangs at 'Starting udev'.

I added 'noapic' to the kernel boot options, and it boots fine. (Turns out I only added that to grub.conf in images that run a particular ap for which I am running performance tests.)

I would like to know why I need the noapic option to get around this and the networking problem. Are there performance hits as a side effect?

david

Avi Kivity wrote:
> david ahern wrote:
>> With kvm-52 my 32-bit host running RHEL5.1 can start an RHEL 5 SMP guest only once. Second and subsequent attempts hang. Removing kvm and kvm_intel modules have no affect; I need to reboot the host to get an SMP guest to start. My similarly configured 64-bit host does not seem to have this problem.
>>
>>
>>   
> 
> What happens if you boot a host, wait a while (say a couple of hours),
> and then start a guest?
> 
> (I'm suspecting unsynchronized tscs)
>