Andrew Cooper writes ("Re: Problem with Xen 4.5 failing XTF tests on old AMD 
cpus ?"):
> It will be because of Gen1 SVM which doesn't have NRIP support. This 
> case requires emulation of the invlpg instruction, rather than just 
> using the information provided by the intercept.

So it seems that the xtf test is not effective at detecting the Xen
bug except on old hardware ?  Is there some way it could be improved ?

It's obviously not desirable that we should have tests which pass in
the production colo and fail in the ancient Citrix Cambridge instance.


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