Re: KVM on Via Nano (Isaiah) CPUs? <Virus checked>

[Avi Kivity <avi@redhat.com>]

Andreas Tanz wrote:
>>> --> dmesg : 
>>> [79116.175571] returning from kvm_handle_exit, cause 3, retval = 1, exit_reason = 0
>>>       
>> That's an exception or nmi.  Next step is to instrument 
>> handle_exception() and see what happens there.  Please print out 
>> vect_info, intr_info, and kvm_rip_read(vcpu) (all as hex).
>>
>> The more you instrument, of course, the better.
>>
>>     
>
> for testing i killed the kvm guest 0.4s after starting it - got this:
>
> thousands of lines : 
> returning from kvm_handle_exit, cause 3, retval = 0, exit_reason = 30
> mixed with single line (every ca. 40th-100th line) : 
> returning from kvm_handle_exit, cause 3, retval = 1, exit_reason = 1
> ...
>   

This is normal operation.  30 is IO_INSTRUCTION, the guest is probably 
reading its boot disk. 1 is EXTERNAL_INTERRUPT, normal host interrupts.

So the guest hands a little later.  Let it reach steady state and see 
where it hangs.

-- 
error compiling committee.c: too many arguments to function