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

[Avi Kivity]

On 05/17/2011 10:03 AM, Ingo Molnar wrote:
> * Fenghua Yu<fenghua.yu@xxxxxxxxx>  wrote:
>
> >  From: Fenghua Yu<fenghua.yu@xxxxxxxxx>
> >
> >  Intel new CPU supports SMEP (Supervisor Mode Execution Protection). SMEP
> >  prevents kernel from executing code in application. Updated Intel SDM describes
> >  this CPU feature. The document will be published soon.
> >
> >  Note: This patch set doesn't enable the SMEP feature in KVM. If it's needed,
> >  another patch will be pushed for enabling the feature in KVM.
>
> We can do it separately from native kernel support, but i'm sure Avi would
> agree that SMEP support in KVM would be nice!

Definitely.

> (as long as it's configurable as
> well, there might be guest OSs that break if SMEP is enabled, right?)

As mentioned earlier, the simple thing is to expose smep and let the 
guest enable it itself.

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

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