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    SubjectRe: [PATCH] sparse_irq aka dyn_irq v13
    Andrew Morton writes:

    > Other architectures want (or have) sparse interrupts. Are those guys
    > paying attention here?

    On powerpc we have a mapping from virtual irq numbers (in the range 0
    to NR_IRQS-1) to physical irq numbers (which can be anything) and back
    again. I think our approach is simpler than what's being proposed
    here, though we don't try to keep the irqdescs node-local as this
    patch seems to (fortunately our big systems aren't so NUMA-ish as to
    make that necessary).

    Paul.


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