Re: [PATCH] kvm: x86: add trace event for pvclock updates

[Marcelo Tosatti]

On Wed, Nov 05, 2014 at 11:46:42AM -0800, David Matlack wrote:
> The new trace event records:
>   * the id of vcpu being updated
>   * the pvclock_vcpu_time_info struct being written to guest memory
> 
> This is useful for debugging pvclock bugs, such as the bug fixed by
> "[PATCH] kvm: x86: Fix kvm clock versioning.".
> 
> Signed-off-by: David Matlack <dmatlack@xxxxxxxxxx>

So you actually hit that bug in practice? Can you describe the
scenario?


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