Re: -smp >=2 + -no-kvm-irqchip broken

[Jan Kiszka <jan.kiszka@siemens.com>]

Gleb Natapov wrote:
> On Tue, Feb 02, 2010 at 05:41:03PM +0100, Jan Kiszka wrote:
>> Gleb Natapov wrote:
>>> On Tue, Feb 02, 2010 at 05:29:53PM +0100, Jan Kiszka wrote:
>>>> Hi,
>>>>
>>>> notice while testing v2 of my vcpu state series: Starting SMP guests
>>>> like Linux or Vista without in-kernel irqchip and with more than one CPU
>>>> make them lock up during boot (Vista) or spit out messages like
>>>>
>>>> udevd[112] trap invalid opcode ip:7fc434630950 sp:7fff3cd3fcb8 error:0
>>>> in libc-2.9.so[7fc4345b2000+14f000]
>>>>
>>> Looks like interrupt is injected as exception. Can you try to bisect?
>> Already started (as low prio background task), first looking for a good
>> version. If you know a recent one, I'm a taker.
>>
> 
> Nope, didn't try no kernel irqchip for a long time.

Kernel plays the key role here, either kvm-kmod or actually the kvm
module: kvm-kmod-2.6.31.6 works, the 2.6.32 series and later do not.
Digging deeper...

Jan

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