On Sun, 20 Apr 2003, Linus Torvalds wrote:
> Good call.
>
> Although I suspect you need about a million interrupt sources to hit
> this, since FIRST_SYSTEM_VECTOR is somethign like 0xef, and thus you can
> hit it only when "offset" has already been incremented seven times
> (which implies that we've walked the whole vector space quite a few
> times by then).
>
> Did you actually see this on hardware?
Yes, we need to bail out in assign_irq_vector when we wrap around,
otherwise we cause collisions when programming the IOAPIC. And we also
need to avoid overruning NR_IRQS structures in setup_IO_APIC_irqs.
Zwane
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:28 EST