Messages in this thread | | | From | "Zhang, Yang Z" <> | Subject | RE: [v3 13/26] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI | Date | Tue, 23 Dec 2014 00:46:44 +0000 |
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Paolo Bonzini wrote on 2014-12-23: >> The problem is we still need to support PI with lowest priority >> delivery mode > even if guest does not configure irq affinity via /proc/irq/. Don't we? > > Yes, but we can get the basic support working first. > > I and Feng talked on irc and agreed to start with a simple > implementation. Then he can add support for vector hashing for all > interrupts, both vt-d pi and normal LAPIC interrupts.
Agree. Obviously, current PI has some limitations to achieve highest performance. We can start with a simple implementation but must ensure we don't change hardware's behavior(From guest's point). Feng's current implementation or use the way I suggested are both ok since both of them cannot solve the problem well.
> > Paolo >
Best regards, Yang
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