> Note that we probably don't have a cache-line per CPU anyway, because
> there is nothing to force proper alignment of the irq_desc[] array.
instead of living with the imperfect alignment, in 2.3 we might want to
create an 'smp_aligned' section (just like initdata), which is checked
during kernel build (after linkage) against alignment violations. (it
would be word aligned in the UP compilation case)
-- mingo
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