Re: [PATCH v5 2/5] KVM: x86: Add IBPB support

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Hi Karim

Thanks for cracking at it through all the iterations.

On Wed, Jan 31, 2018 at 08:37:44PM +0100, KarimAllah Ahmed wrote:
> From: Ashok Raj <ashok.raj@xxxxxxxxx>
> 
> The Indirect Branch Predictor Barrier (IBPB) is an indirect branch
> control mechanism. It keeps earlier branches from influencing
> later ones.

It might be better to split this patch into two parts.

- Just the place where we do IBPB barrier for VMX/SVM
- The msr get/set handling to comprehend guest, nested support etc.

The first part should be trivial so it can possibly make it into
tip/x86/pti branch sooner, while we rework the feedback to 
address this completely. 


Cheers,
Ashok



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