Re: [PATCH v2 0/4] Enable SMEP CPU Feature

[Avi Kivity]

On 05/17/2011 02:38 PM, Ingo Molnar wrote:
> >
> >  Depends if the guest uses a read-modify-write pattern or not.  We could do it
> >  transparently in kvm.ko, since the real cr4 need not corresponds to the guest
> >  notion (for example, we often set cr0.wp or cr0.ts even though the guest
> >  wants them clear).
>
> Oh, being transparent is a nice touch when it comes to security measures
> (catching attackers who think there's no SMEP and such) - but that would need
> KVM support and a new ioctl to configure it, right?

Yes.

--
error compiling committee.c: too many arguments to function

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