On 12/07/2016 22:09, Radim Krčmář wrote:
> +static bool kvm_apic_map_need_slowpath(struct kvm *kvm, struct kvm_lapic **src,
> + struct kvm_lapic_irq *irq, struct kvm_apic_map *map)
> +{
> + if (!map)
> + return true;
> +
> + if (kvm->arch.x2apic_broadcast_quirk_disabled) {
> + if ((irq->dest_id == APIC_BROADCAST &&
> + map->mode != KVM_APIC_MODE_X2APIC))
> + return true;
> + if (irq->dest_id == X2APIC_BROADCAST)
> + return true;
> + } else {
> + bool x2apic_ipi = src && *src && apic_x2apic_mode(*src);
> + if (irq->dest_id == (x2apic_ipi ?
> + X2APIC_BROADCAST : APIC_BROADCAST))
> + return true;
> + }
> +
> + return false;
> +}
This isn't the only case where you go through the slowpath. What about
renaming to kvm_apic_dest_is_broadcast?
Paolo
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