Re: [PATCH 05/13] KVM: Update IRTE according to guest interrupt configuration changes

Paolo Bonzini
2014-11-12T09:57:17Z

On 12/11/2014 10:19, Wu, Feng wrote:
>> You can certainly backport these patches to distros that do not have
>> VFIO. But upstream we should work on VFIO first. VFIO has feature
>> parity with legacy device assignment, and adding a new feature that is
>> not in VFIO would be a bad idea.
>>
>> By the way, do you have benchmark results for it? We have not been able
>> to see any performance improvement for APICv on e.g. netperf.
>
> Do you mean benchmark results for APICv itself or VT-d Posted-Interrtups?

Especially for VT-d posted interrupts---but it'd be great to know which
workloads see the biggest speedup from APICv.

Paolo