Re: [Xen-devel] [PATCH] x86/hvm: Conditionally leave CPUID Faulting active in HVM context

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.01.17 at 12:17, <andrew.cooper3@xxxxxxxxxx> wrote:
> If the hardware supports faulting, and the guest has chosen to use it, leave
> faulting active in HVM context.
> 
> It is more efficient to have hardware convert CPUID to a #GP fault (which we
> don't intercept), than to take a VMExit and have Xen re-inject a #GP fault.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>


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