Il 24/10/2012 02:50, Paul Mackerras ha scritto: > So we could indeed use the existing KVM_CREATE_IRQCHIP to tell KVM to > create a presentation controller per vcpu. But then how do we tell > KVM how many source controllers we want and how many interrupts each > source controller should handle? The source controllers are not tied > to any particular vcpu, and a source controller could potentially have > 100s of interrupts or more (particularly with MSIs). Configuration of > each source fits into 64 bits, so if we tried to use KVM_SET_IRQCHIP > for configuring a source controller we'd be limited to 64 interrupts > per source controller. As Jan said, there's more than a few similarities between the x86 and PPC model. Taking inspiration from the x86 API, configuring the source controller seems to be more of a task for KVM_SET_GSI_ROUTING (a very x86-centric name, I must admit). Paolo _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
