Re: [kvm-devel] Guest kernel hangs in smp kvm for older kernels prior to tsc sync cleanup

[Avi Kivity <avi@qumranet.com>]

Ingo Molnar wrote:
> try this test perhaps in an SMP guest:
>
>  http://people.redhat.com/mingo/time-warp-test/time-warp-test.c
>
> you can ignore TSC warps - but no GTOD or CLOCK warps should occur.
>
>   

On a broken guest kernel, I see gtod and clock warps.  On a good guest 
kernel, I do not, presumably because the tsc clocksource is marked as 
unstable.

I see tsc warps on both.  8 threads on 4 cpus.

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

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