Re: Starting a VM reboots my machine

Avi Kivity
2007-11-07T05:56:20Z

Cam Macdonell wrote:
> Dor Laor wrote:
>
>> Cam Macdonell wrote:
>>
>>> Hi,
>>>
>>> I'm running an AMD
>>>
>>> vendor_id : AuthenticAMD
>>> cpu family : 15
>>> model : 75
>>> model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4600+
>>>
>>> with 4GB of RAM and Scientific Linux 5.0. I've compiled kvm-48 on it and
>>> the compile works and loading the modules works fine, the only dmesg
>>> line referring to kvm is SELinux: initialized (dev kvm_anon_inodefs,
>>> type kvm_anon_inodefs), not configured for labeling.
>>>
>>> However, when I boot any KVM, the machine reboots. It works fine with
>>> the no-kvm flag. Has anyone else seen this behaviour?
>>>
>>>
>> We have some instabilities with AMD. These issues are under debug these
>> days.
>> Can you please supply netconsole debug messages from the host. This can
>> be very helpful.
>> Also what's the guest OS?
>>
>
> Hi Dor,
>
> Sorry for the delay, here's the netConsole dump. This is trying to boot
> FC6 on Scientific Linux 5. Let me know if you need more info.
> This is with kvm-50 with the flag -no-kvm-irqchip. Also, this time it
> didn't reboot, but froze.
>

Does running the vm with 'taskset 1' help?

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.