Re: [Xen-devel] Re: [RFC] Hypercalls from HVM guests

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 12 Apr 2006, at 16:39, Stephen C. Tweedie wrote:

> > CPUID never faults. Well, unless the processor doesn't support the
> > instruction, but you find that out from EFLAGS.
> What does vmx_vmexit_do_cpuid() do then?  I doubt there are many
> VMX-capable CPUs without cpuid().  :-)
Yes, you can make cpuid trap to the hypervisor if running an hvm guest. 
But that's quite different from a guest-visible trap or fault.
 -- Keir


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