RE: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI

[Wu, Feng]

> -----Original Message-----
> From: Paolo Bonzini [mailto:pbonzini@xxxxxxxxxx]
> Sent: Monday, December 22, 2014 7:07 PM
> To: Wu, Feng; Zhang, Yang Z; Thomas Gleixner; Ingo Molnar; H. Peter Anvin;
> x86@xxxxxxxxxx; Gleb Natapov; dwmw2@xxxxxxxxxxxxx; joro@xxxxxxxxxx;
> Alex Williamson; Jiang Liu
> Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; KVM list;
> Eric Auger
> Subject: Re: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for
> VT-d PI
> 
> 
> 
> On 22/12/2014 12:04, Wu, Feng wrote:
> > > Can you support them only if the destination is a single CPU?
> >
> > Sorry, I am not quite understand this. I still don't understand the "single CPU"
> here.
> > Lowest priority interrupts always have a cpumask which contains multiple
> CPU.
> 
> Yes, and those need not be accelerated.  But what if you set affinity to
> a single CPU?

How do I set affinity to a single CPU if guest configure a lowest priority interrupt? Thanks a lot!

Thanks,
Feng

> 
> Paolo
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