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?
>
I pushed a fix for the NMI issue. Can you check if it fixes your hangs?
--
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