Re: [PATCH 00/11] x86: Supervisor Mode Access Prevention

From: Ingo Molnar
Date: Sat Sep 22 2012 - 07:32:24 EST



* H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> wrote:

> On 09/21/2012 03:08 PM, Dave Jones wrote:
> >
> > Perhaps add a printk somewhere to show that it's actually been enabled maybe ?
> >
> > Also, would it be feasible to add something like we have for test_nx ?
> > If this feature regresses in some way in the future, I suspect we'd like
> > to know about it sooner rather than later.
> >
>
> Good idea... should add this both for SMEP and SMAP.

Very much agreed - these exploit preventation hardware features
are really useful, and it's good to inform the user that they
are active.

Thanks,

Ingo
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