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Re: [Xen-devel] Intermittent fatal page fault with XEN 4.3.1 (Centos 6.3 DOM0 with linux kernel 3.10.16.)

On Wed, 2013-11-06 at 16:05 +0000, Jeff_Zimmerman@xxxxxxxxxx wrote:
> Jan,
> I will give your patch a try.
> I have to recant my previous statement regarding not using nested-virt.
> It seems some of the code that is being executed on the vm contains vmx 
> instructions.
> Since by virtue of running this code in an hvm subject make it nested-virt.
> This raises a question, if this functionality is undesired can we just 
> disable nested virt by adding
> nestedhvm=false to the configuration file?  Should the cpuid and
> cupid_check settings be changed as well?

I'm reasonably certain that nestedhvm=false will clear the relevant
flags in the guest visible cpuid. I'd say it was a bug if this doesn't

nestedhvm should be disabled by default, did you explicitly enable it?
Removing the line altogether ought to disable it too. Please let us know
if not.


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