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

[Paolo Bonzini]

On 09/01/2015 16:12, Radim KrÄmÃÅ wrote:
> > The chipset doesn't support it. :(
> 
> I meant that we need to recompute PI entries for lowest priority
> interrupts every time guest's TPR changes.
> 
> Luckily, Linux doesn't use TPR, but other OS might be a reason to drop
> lowest priority from PI optimizations.  (Or make it more complicated.)

Doing vector hashing is a possibility as well.  I would like to know
what existing chipsets do in practice, then we can mimic it.

Paolo
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