Re: kvm-45 problems

Avi Kivity
2007-10-09T09:54:23Z

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Farkas Levente wrote:
> Avi Kivity wrote:
>
>> Zhao, Yunfeng wrote:
>>
>>> We run some booting multiple guest tests in our nightly testing.
>>> Like booting two UP windows guests, booting one UP linux guest and one UP windows guest, and booting 4 UP linux guests.
>>> The first two cases have no problem in our testing.
>>> And booting 4 UP linux guests may crash host, but this problem doesn't happen very time. If the problem didn't happen, linux guest can be log in without any problem.
>>>
>>> For smp guest, we meet a problem that booting linux guest with 4 vcpus causes soft lock error on host. Once this error happened, qemu process also could not be killed.
>>>
>>> Our linux guests are using 2.6.9, 2.6.16, and 2.6.23 kernels.
>>>
>>>
>>>
>> This may be due to NMIs or MCEs. Is it possible your machine is
>> receiving them?
>>
>
> what does it mean?
>

Non-maskable interrupts and machine check exceptions.

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